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  • 18 2019-06
    Differences between positive pressure cloth bag dust collector and negative pressure cloth bag dust collector:
    Advantages of boiler bag filter ● high dust removal efficiency, up to 99.9%; ● less ancillary equipment, investment savings, technical requirements are not as high as the electrostatic precipitator; ● can catch dust with high specific resistance, difficult to recover dust; ● stable performance of bag dust collector, good adaptability to load change, easy operation and management, especially suitable for collecting fine and dry dust, dry dust collected is easy to handle and recycle; ● can be suitable for the whole process of production dust new theory, reduce total emissions; ● bag filter is suitable for cleaning dust gas containing explosion danger or spark. Faults of boiler bag filter ● used to deal with high relative humidity of dust gas, should take insulation measures (especially in winter), so as not to cause "paste bag" due to condensation. ● for the purification of corrosive gases, should choose the appropriate corrosion resistant filter material, for the treatment of high temperature flue gas should take cooling measures. Reduce the smoke temperature to the long-term operation of the filter bag can withstand the temperature below, and as far as possible to use high temperature resistant filter material. ● large resistance, the general pressure loss is 1000 ~ 1500Pa. Advantages of electric precipitators ● dust removal efficiency can collect fine dust below 1um, which can control a reasonable dust removal efficiency. ● handle large amount of smoke, can be used at high
  • 18 2019-06
    How to maintain the screw chiller with EVR/MSV refrigeration solenoid valves?
    The correct commissioning of the screw chiller is an important part of ensuring the normal operation of the refrigeration unit, saving energy consumption and prolonging the service life. For on-site installation of large and medium-sized refrigeration systems, the requirements should be familiar with the layout and connection of the entire system, the outline structure and component performance of each equipment, as well as the electronic control system and water supply system. To this end, engineers such as refrigeration and hydropower should participate in the commissioning. Users should carefully read the product operation manual provided by the factory before commissioning, and proceed step by step according to the operation requirements. The operator must undergo special training from the factory to obtain the operation certificate of the unit before the operation can be carried out, so as to avoid fatal damage to the unit caused by wrong operation. Screw chiller commissioning 1) Charge of refrigerant. At present, the refrigeration unit is generally filled with refrigerant before leaving the factory. After the installation on site, if no accidental damage is found in the visual inspection, the relevant valve can be opened directly (you should read the manufacturer's instruction manual first, in transit, on the unit). The valve is normally in the off state) for commissioning. If the refrigerant has been leaked or insufficient, first find the leak point and eliminate the leak, then add the required grade of refrigerant according to the product instruction manual. Note that the refrigerant charge should meet the technical requirements.
  • 25 2019-06
    How to choose refrigeration solenoid valve and installation check in cold storage
    When selecting, the diameter of the solenoid valve of the same size as the pipeline should be configured according to the size of the pipeline of the cold storage refrigeration equipment. The material of the solenoid valve body should be compatible with the center of the pipeline; the operating voltage should be consistent with the supply voltage. Different types of electromagnetic wide should be used for different work places. Solenoid valves such as refrigerant lines cannot be used in water lines because water can foul and inevitably have solid impurities, which can easily block small balance holes on the diaphragm. The electromagnetic valve used on the oil return pipe of the oil separator should have anti-vibration measures to prevent the fluctuation of the compressor discharge pressure from affecting the opening and closing of the auxiliary valve. Solenoid valves for suction pipes are required to be dew condensation, so use a moisture-proof coil or a closed solenoid valve. When the ambient temperature is higher than 40 °C, use a heat-proof coil or the like. The working current, voltage, frequency and power of each electromagnetic coil have a certain range, and can not be used indiscriminately to avoid burnout. When the voltage drops, the coil suction also drops. When the AC frequency is low, the suction force increases, but the coil heats up and is easily burned out. When assembling the solenoid valve, the coil part should be assembled correctly according to the specification, so as not to increase the magnetic resis
  • 25 2019-06
    LCM - D/G series long bag Pulse dust collector
    LCM - D/G series long bag Pulse dust collector is offline in the injection Pulse (Jet Pulse) removal technology, on the basis of specially developed to meet the needs of the large air purification with advanced levels of Pulse bag filter, not only has the ash removal ability of injection Pulse dust collector, dust removal efficiency, low emission concentration, but also has stable and reliable, low gas consumption, the characteristics of the cover an area of an area small, especially suitable for processing large volume of flue gas. The long bag low-pressure pulse bag filter is a large dust removal equipment with large air volume, good dust removal effect, high dust removal efficiency, reliable operation, convenient maintenance and small occupation area. It is used for dust control and material recovery in metallurgy, building materials, electric power, chemical industry, carbon black, asphalt concrete mixing, boiler and other industries. Construction characteristics of LCM type long bag off-line pulsed dust collector: 1. The long bag off-line pulse dust collector is mainly composed of box, dust hopper, air inlet and even pipe, air outlet pipe, support, filter bag, spraying device, dust discharging device, etc. It adopts thin plate type lifting valve to realize off-line three states, advanced ash cleaning technology and reliable operation. 2, the long bag low-pressure pulse bag dust collector design reasonable air intake flow tube and dust bucket diversion technology to solve the general bag dust collector often produced by the uneven flow in each chamber phenomenon. 3. The research structure of long bag low-pressure pulse bag filter bag has various structural forms (octagonal, circular, etc.) according to different working conditions. Quick and eas
  • 13 2019-06
    The classification of Fully Automatic Filling Machines
    Due to the differences in physical and chemical properties of liquid materials, there are different requirements for filling. The liquid material is poured into the packaging container by the liquid storage device. The following methods are recommended: 1. Normal pressure filling It refers to a filling method that directly flows into the packaging container by the self-weight of the liquid to be poured under atmospheric pressure. Inlet and exhaust, that is, the liquid material enters the container, and the air in the container is discharged; when the liquid is stopped, that is, when the liquid material in the container reaches the quantitative requirement, the liquid inlet is automatically stopped; the remaining liquid is removed, that is, the exhaust pipe is removed. Residual liquid. 2. Isobaric filling It is a filling method in which the compressed air of the upper air chamber of the liquid storage tank is used to inflate the packaging container so that the pressures of the two are nearly equal, and then the liquid material flows into the packaging container by its own weight. The process of isostatic filling is: inflating the pressure, injecting the gas, stopping the liquid, releasing the pressure, that is, releasing the residual compressed gas in the bottle neck to the atmosphere, so as to avoid a sudden drop in the bottle and cause a large amount of bubbling, affecting Packaging quality and quantitative accuracy.
  • 11 2019-06
    How to avoid cement blocking dust filter bag
    In view of how to avoid cement blocking dust removal filter bag, the following points should be paid attention to: 1. Check the total moisture of grinding materials regularly, and pay close attention to whether the grinding materials, such as clinker, limestone and gypsum, are wet and damp; Ensure that the limestone, gypsum and other materials into the factory do not increase water due to rain leakage, control the grinding limestone water ≤1%, gypsum water ≤3%, strictly control the slag into the grinding water, do not put wet materials straight. Open drainage ditch in the wet slag stacking site of the combined storage tank to reduce the original moisture of wet slag as soon as possible. When the control index is specified, winter and summer can be different. In low temperature and rainy season, the ratio of mixed materials should be adjusted under the condition of quality permitting, so as to reduce the total moisture. For example, fly ash can be used to replace part of the slag. 2. Appropriately increase the ventilation in the mill to explore the optimal air volume range. The negative pressure of grinding head should be included in the required inspection items when operating the patrol inspection. The filling quantity of abrasive body in one bin should be appropriate to avoid affecting the ventilation area of the hollow shaft. In order to avoid blocking the grate, material such as iron slag mixed in the mixed material should be cleaned in time. To maintain the stability of the ventilation capacity i
  • 04 2019-06
    Principle of Woodworking Dust Collector
    Woodworking dust Collector includes three devices, piping system, fan system and filtration system. In these three systems, the structure and function of different configurations are different, but the basic principle is the same, just like wearing a mask. The pipeline is connected to the woodworking machinery and the filtration system, and the fan works so that the pipeline generates negative vacuum. One of the main fan configuration and filter bag performance. The configuration of the fan is calculated according to the arrangement of the number of machines in the production workshop, which requires professional personnel to calculate the configuration, so that the air volume of the filter interface of each machine reaches the same, so as to effectively remove dust. Dedusting and filtering cloth bags should be selected according to different environment. The dust properties generated by different woodworking workshops are different. Contain sawdust particles flow through the fan to the bag filter in the diversion of storehouse, under the action of the velocity of airflow in the guide plate is reduced, the heavier sawdust particles under the action of gravity, falling into a gray barn, other lighter fine dust currents adsorption on the filter bag looks up, after the bag filter, clean gas into the exhaust chamber side by side in the outside. With the continuous filtration, dust accumulated on the outer surface of the filter bag will be more and more, which will increase the operating resistance of the system and reduce the dust removal effic
  • 04 2019-06
    Future trends and changes in filling machinery
    Future trends and changes in filling machinery The filling machinery is now more and more automated, high-speed, and the trend is fully automated. The domestic research and development of filling machinery is more and more, accelerating technological innovation, shortening the gap between us and foreign countries, fully automatic filling In fact, it was first introduced to China from abroad. At that time, the level of foreign mechanization was high, and the level of R&D was high. At that time, this technology was blank in China. At that time, the development in China in the past few years was obvious to all. The level of filling equipment kept up with the international level. According to the survey of major packaging machinery manufacturers around the world by international famous survey institutions, the domestic packaging machinery industry will maintain a good momentum of development in the next few years, but the overall industry structure will undergo tremendous changes. To this end, we continue to have new actions in product updates and industrial restructuring, and the packaging machinery produced by the company is becoming more and more extensive. On the basis of the manufacture of agrochemical packaging equipment, the R&D and production of the models required by the daily chemical industry and large chemical industry have gradually started.
  • 28 2019-05
    Comments of Industrial Dust Collector Bag Filter With DMF series pulse solenoid valve
    How the bag filter works: The bag filter mainly uses the filter material (fabric or felt) to filter the dusty gas to achieve the purpose of dust removal. The filtration process is divided into two stages. First, the dust-containing gas passes through the cleaned filter material. At this time, the filtration is mainly caused by the retention of the filter fiber. Secondly, when the retained dust is continuously increased, a part of the dust is embedded in the interior of the filter material, and a part of the dust covers the surface of the filter material to form a dust layer. At this time, the dust layer is mainly used to filter the dust-containing gas. After the dust-containing gas enters the dust collector, the airflow speed decreases, and the larger particles in the smoke directly precipitate to the ash bucket, and the remaining dust particles are filtered from the outside to the inside through the filter bag, and the cleaned smoke is discharged from the inside of the filter bag, and the fly ash is blocked. On the outside of the filter bag. As the accumulation of ash accumulates, the pressure difference between the inside and outside of the dust filter bag gradually increases. When the pressure difference reaches the set value, the pulse valve diaphragm automatically opens, the pulsed air is sprayed into the filter bag through the nozzle, and the filter bag is expanded, thereby The dust adhering to the filter bag falls off to achieve the effect of dust removal. The structure of the bag filter: The internal structure of the bag filter is mainly composed of an upper box, a middle box, a lower box (ash hopper), a cleaning system and a ash discharging mechanism. The bag filter is mainly composed of four major systems, namely the cleaning system, the co
  • 28 2019-05
    Position of Bag-type Dust Removal in the environmental protection industry
    Bag-type dust removal is an efficient dry dust removal technology, which is simply a filter bag made of fiber filter material and purifies the gas through the dust layer formed on its surface. Bag dust removal technology is an effective way to prevent and control air pollution and reduce industrial smoke and dust emissions. Xue-jun cao said that the ministry attaches great importance to development of high temperature bag dust removal technology, the technology of bag-type dust collector into the catalogue of advanced technology for energy conservation and emissions reduction, environmental protection filter with textiles, especially high temperature filtration materials as the key point of the development of the industrial support, and support the China textile academy of sciences set up a high temperature filter material of bag-type dust collector development and application of the public service platform, provide the filter bag filter bag production and application oriented enterprise quality performance assessment, the new filter material technology development, the old filter bag recycling industries such as the universal service. In the past five years, bag-type dust removal has been applied rapidly in urban garbage incineration, coal-fired power generation, cement, steel smelting and other industries, and has become one of the main industrial technologies for flue gas dust removal in coal-fired power plants. "Gradient filter material, ultra-fine fiber filter material and other key products and technologies have made significant breakthroughs in recent years, prompting the bag-type dust removal technology to achieve fine particulate dust emission concentration of less than 10 mg per cubic meter, or even reach the level of ultra-net emissions. Li lingshen, vice President of China textile industry federation and President of China industrial
  • 22 2019-05
    Central air conditioning in refrigeration equipment field
    With the improvement of the construction industry, industrial and commercial facilities and people's quality of life, the demand for central air-conditioning products is increasing, and the scope of demand and the level of demand are also becoming more complex and diversified. The rapid development of special central air-conditioning has benefited greatly from the tremendous development of the real estate industry. The rise in the scale of real estate investment, especially the increase in the size of office and commercial buildings, will inevitably lead to a rapid increase in the total demand for central air-conditioning products. Industrial refrigeration equipment, central air-conditioning, and refrigeration and refrigeration equipment are popular words in the current refrigeration and air-conditioning equipment industry, and they are widely used in various fields, which have played an effective role in promoting the economic development. The application fields of industrial refrigeration equipment are often accompanied by industrial high temperature, dusty, multi-electromagnetic radiation, etc. The harsh working conditions cause interference to the power and instrument control system of the refrigeration equipment, and the safety and stability of industrial refrigeration equipment are extremely Importantly, major industrial refrigeration equipment includes industrial liquid (oil) coolers, industrial air conditioners. The central air conditioner is an air conditioner that controls a different room to achieve indoor ai
  • 21 2019-05
    Maintenance of Solenoid Valve
    The cut-off pressure difference of the angular stroke type valve is large because the resultant force of the medium on the valve core or the valve plate generates a very small torque to the rotating shaft, and therefore, it can withstand a large pressure difference. First, why does the demineralized water medium use a rubber-lined butterfly valve and a lining fluorine diaphragm valve with a short service life? Demineralized media contain low concentrations of acids or bases which are highly corrosive to rubber. The corrosion of rubber is characterized by expansion, aging, and low strength. The butterfly valve and diaphragm valve with rubber lining have poor effect, and the essence is that the rubber is not resistant to corrosion. The back-lined rubber diaphragm valve is improved to a fluorine-lined diaphragm valve with good corrosion resistance, but the diaphragm of the fluorine-lined diaphragm valve can be broken by being folded up and down, causing mechanical damage and shortening the life of the valve. The best way to do this now is to use a special ball valve for water treatment, which can be used for 5 to 8 years. For a single core, the valve stability is good when the medium is flow-opening; the stability of the valve is poor when the medium is flow-closed. The double seat valve has two spools, the lower spool is closed, and the upper spool is open. Thus, when working at a small opening, the flow-closed spool is liable to cause vibration of the valve. This is a double seat valve. Can not be used for small opening work. Second, why is the d
  • 15 2019-05
    Industrial automation is the trend. Have you been affected?
    Industrial automation is the trend. Have you been affected? Some 800 million jobs around the world could be lost to automation by 2030, according to a new forecast. The report, from the McKinsey global institute, says advances in artificial intelligence and robotics will have a huge impact on People's Daily lives and work, rivaling even the second industrial revolution that helped shift humanity from an agrarian to an industrial society. In the United States alone, between 39 million and 73 million jobs will be lost to automation, or about one-third of the workforce. But the report also points out that, as in the past, advances in technology will not be purely negative. There will be more new jobs, and now some industries will be redefined and workers will face the opportunity to change careers. The report's authors say the challenges this generation faces are how best to navigate this transition. Income inequality will increase and even lead to political instability. Those who need retraining are not college students or young people, but mostly middle-aged professionals. But the change won't be fair to everyone. For example, there are already a lot of cutting-edge technologies widely adopted today, and only 5% of jobs are done through automation. But automation will replace a third of the 60 per cent of jobs in the future. The McKinsey researchers cite a 1960s us government co
  • 13 2019-05
    Application field of stainless steel valves
    Due to its long service life, rust-free, green and environmental protection advantages, stainless steel valves have entered industrial applications and have become a must-have valve product in various pipeline sectors. Therefore, customers must require merchants to provide stainless steel valves before purchasing them. The production and delivery certificate of stainless steel valves can also be detected by spectrometer. The spectrometer has been widely used due to its high precision and wide range of applications. Its application in the field of precious metal and stainless steel valve detection has also developed rapidly in recent years. 304, 316L valves are mainly dependent on the equipment to detect, which can reduce the purchase of unqualified products. Stainless steel valves are commonly used in applications where the working medium is corrosive, such as corrosive media, foods, pharmaceuticals, oils, liquid metals, and radioactive media. Any of these valve materials are resistant to working media corrosion. Capabilities are relatively limited and subject to many factors. If the processing technology and heat treatment process used in the manufacturing process are proper, the corrosion resistance of the material is ensured. As for the concentrated acid medium having a concentration of >98%, the steel has no corrosion resistance regardless of the heat treatment process. Therefore, when selecting valve materials such as ball valves, gate valves, globe valves, and check valves according to the nature of the working medium, it is necessary to simultaneously study the effects of various factors such as the concentration of the medium, the temperature, and the heat treatment process of the material on the corrosion resistance. Good steel materials such as 316 L, 904 or
  • 09 2019-05
    Equipment and component requirements for automated production lines
    Automated production is now more and more popular, and what does every automated factory need? Introduced below: 1.The controller Automated factory brain The controller refers to a master device that changes the wiring of the main circuit or the control circuit in a predetermined order and changes the resistance value in the circuit to control the starting, speeding, braking, and reversing of the motor. It consists of a program counter, an instruction register, an instruction decoder, a timing generator, and an operation controller. It is the "decision-making body" that issues commands, that is, completes the coordination and direct operation of the entire computer system. Commonly used controllers in automation plants include plc, industrial computer, and so on. Programmable logic controller that uses a type of programmable memory for its internal program to perform user-oriented instructions such as logic operations, sequence control, timing, counting, and arithmetic operations, and through digital or analog input/output Control various types of machinery or production processes. 2.Robot Automated factory executor Robot, a robot that automatically performs work. It can accept human command, run pre-programmed procedures, or act on principles that are based on artificial intelligence techniques.
  • 08 2019-05
    Air conditioning can suppress global warming?
    As we all know, due to the accumulation of the greenhouse effect, the earth cannot balance energy in the cycle of cold, warm and warm, which leads to global warming. However, with the rapid increase in temperature, people are not aware of the problem. They still deforestation, burning fossil fuels, and generating a large amount of greenhouse gas carbon dioxide. If this continues, global precipitation will be redistributed and sea level will be It will rise, and in the end it may even harm people's lives. On May 6, the Global Science Magazine said scientists want to use air conditioning to curb global warming. Since the root cause of the greenhouse effect is carbon dioxide, scientists say they can use existing technology to place carbon dioxide traps inside air conditioners, collect carbon dioxide during air conditioning, and then convert carbon dioxide into renewable hydrocarbon fuels instead. Traditional fossil fuels use a large amount of carbon dioxide in the air in another way. The principle envisaged by the scientists is: according to the set module diagram, first capture carbon dioxide from the air, electrolysis, differentiation, etc. according to the counterclockwise operation process, further convert carbon dioxide into hydrocarbon fuel, store, recycle, and capture again to form a Closed net zero carbon cycle, even achieving negative emissions. The last thing to note is that although this vision can change the current air quality and provide economic development opportunities, it will face a lot of challenges in the implementation process. The space problem of storing carbon dioxide is open to question because it is possible to pollute. Water supply. In the future, air conditioners that use
  • 07 2019-05
    The development status of pneumatic technology in China
    Pneumatic system because of its simple structure, light, high reliability, long life, small fire blast, environmental pollution, the project is easy to implement, etc., with the rapid development of automation technology in the 1970 s rapid growth also, pneumatic systems have become essential basic elements in the modern industrial automation, is to achieve a variety of production control, automatic control of one of the most important means. After more than 30 years of development, China's pneumatic technology has formed a basic complete, with a relatively large scale and a certain level of technical industry system. The next five to ten years will be a critical period for the development of China's pneumatic technology, and several large leading enterprises will be formed. Understanding the gap and looking into the future is of great significance to the future development. In recent years, China's pneumatic products due to low prices, rapid export growth, in some developing countries have a certain degree of international competitiveness, but compared with the products of major international companies, the technical level and product quality is roughly equivalent to the level of foreign 10 years ago. The general technical performance of the product is acceptable, but the key technical performance such as reliability, response characteristics, precision and sensitivity still has a big gap with foreign countries. At present, several large-scale enterprises have taken shape and their competitiveness has been improved. Products from low-end manufacturing gradually to high-end equipment is penetration;
  • 05 2019-05
    Introduction to Mechanical Manufacturing and Automation Technology
    The meaning of chemical machinery design and manufacturing and its automated production Mechanical manufacturing is the general term for all kinds of manufacturing equipment. In the design of equipment, it is required to make precise optimization for all relevant items. It uses advanced technical documents to provide feasibility technical analysis for all processes of manufacturing, and at the same time, the equipment is running. Related auxiliary work, including lubrication, mechanism operation and material selection. The design and manufacture of chemical machinery includes the process of machining, the transformation and operation of modern technology and a series of related technical requirements. This discipline covers a wide range of topics, including mechanics, mechanical mapping, and electronic information technology. The meaning of mechanical manufacturing and its automation technology Regarding the design and manufacture of chemical machinery and its automation technology, in the 1990s, the International Federation of Mechanical and Institutional Theory has given a definition, which refers to the system idea, electronic control system and precision machining technology in the manufacturing process of mechanical products. In the integration of coordinated development, the basic characteristics of chemical machinery design and manufacturing automation technology is mainly to take the system as the starting point of technology application, integrate information technology, microelectronic technology and various software technologies into one, optimize organi
  • 05 2019-05
    Performance comparison of pneumatic control valve and hydraulic valve
    (I) different energy sources Pneumatic components and devices can adopt the method of centralized air supply from air pressure station to adjust the working pressure of their respective pressure reducing valves according to different requirements and control points. Hydraulic valves are equipped with oil return pipeline, easy to collect used hydraulic oil tank. Pneumatic control valve can be directly through the exhaust port to the compressed air into the atmosphere. (ii) different requirements for leakage Hydraulic valves are critical for outward leakage, but allow a small amount of leakage within components. For pneumatic control valves, except the gap seal valve, in principle, do not allow internal leakage. The internal leakage of pneumatic valve may lead to accident. For pneumatic pipes, a little leakage is allowed; And the leakage of hydraulic pipeline will cause the system pressure drop and environmental pollution. (3) different requirements for lubrication The working medium of the hydraulic system is hydraulic oil, and there is no requirement for lubrication of the hydraulic valve. Pneumatic system medium for the air, the air is not lubricity, so many pneumatic valves need oil mist lubrication. Valve parts should be selected not prone to water corrosion of the material, or take necessary anti-rust measures. (iv) different pressure ranges Pneumatic valve operating pressure range is lower than the hydraulic valve. Pneumatic valve working pressure is usually less than 10bar, a few up to 40bar. But the working pressur
  • 05 2019-05
    The way to integrate industrial robots with CNC machine tools
    In the field of CNC machine tool processing applications, the fusion application of China's machine tool loading and unloading robots and CNC machine tools has been at the forefront of development. From the perspective of industry application, there have also been major changes: (1) Working island: single-pair single-competition plus single-to-many online processing. (2) Flexible Manufacturing System (FMS): Based on the network control of the flexible machine plus line, the PLC control platform is used to connect multiple robots, multiple CNC machine tools and their auxiliary equipment through the industrial Ethernet bus. The beat is performed in an orderly automatic production. (3) Digital workshop: With CADCAMCAPPSMES auxiliary production tools, logistics technology and sensing technology, it has the functions of production process monitoring, online fault real-time feedback, processing technology data management, tool information management, equipment maintenance data management, product information recording, etc. Unmanned processing requirements, to achieve production planning, operational coordination and optimization of the processing system. (4) Smart Factory: With the intelligent workshop layout and ERP information management system, it will maximize the innovation of traditional production methods. The database of the information management system can interface with various external information systems through the gateway, connect the workshop to the ERP system,
  • 18 2019-04
    The promotion of solenoid valves mainly depends on technology
    China's natural resources are limited, and the development of standards for power saving, water saving and material saving is one of the development directions of solenoid valve standards. Accelerate the elimination of products with low efficiency and high energy consumption, adjust the industrial structure, and promote the development, promotion and application of new technologies and new products. Solenoid valve application has a large market space With the continuous strengthening of the country's macro-control policies, investment in energy, metallurgy, and chemical industries has decreased, and the situation of oversupply of low-end products in the solenoid valve industry has emerged. The operation of valve companies has entered a period of vicious price competition. As one of the actuators of the fluid control automation system, the solenoid valve has become the first choice for fluid control automation because of its low cost, simplicity, quick action, easy installation and easy maintenance. Develop new materials to promote industrial transformation In terms of reducing energy consumption, we will vigorously develop valve products with small flow resistance and low loss. In terms of power saving, the focus is on the electric device of the solenoid valve, and the energy consumption of the electric device is controlled by selecting a motor with low en
  • 17 2019-04
    Sewage treatment and sewage resource market
    Sewage treatment and sewage resource market Due to the late development of China's water treatment technology, this market is still in the development stage and belongs to the blue ocean market. Although some early entry environmental protection companies have started to work, the current market is mixed and the price level is not high. Unification, product technology and quality have not been verified. The spiral plate heat exchanger plays a vital role in the heat exchange part of the sewage. Due to the lack of technical teams, many traditional environmental companies are still in an inefficient heat transfer stage. Although the cost is too high, it failed. Look for suitable equipment with high heat transfer efficiency. According to the requirements of the Polaris energy-saving and environmental protection network, water pollution control requirements are urgently needed, and the sewage treatment and sewage resources market is huge. China's water pollution control level is still relatively backward, and the governance task is still very arduous. The need to speed up water pollution control is still very urgent. The "Water Pollution Prevention Action Plan" promulgated by the State Council is expected to invest 2 trillion yuan to control nearly 5 trillion yuan of water pollution control. During the [Thirteenth Five-Year Plan" period, China's sewage treatment input (including governance investment and operating costs) will reach 139.22 billion yuan, of which industrial and urban domestic sewage treatment investment will reach 459 billion yuan. With the continuous improvement of the living standards of residents, the quality of life has been improved, and the amount of domestic wa
  • 16 2019-04
    Solenoid valve selection should follow the principle of installation attention points
    Four principles of type selection Security: 1, corrosive media: should choose plastic king solenoid valve and all stainless steel; For highly corrosive medium must be selected isolation diaphragm type. Neutral medium, also should choose copper alloy for valve shell material solenoid valve, otherwise, valve shell often rust chip off, especially not frequent occasions. Ammonia valve can not use copper. 2, explosive environment: must choose the corresponding explosion-proof grade products, outdoor installation or dust occasions should choose waterproof, dust varieties. 3. The nominal pressure of the solenoid valve shall exceed the maximum working pressure in the pipe. Applicability: 1. Medium characteristics 1) different kinds of solenoid valves are selected for quality gas, liquid or mixed state; 2) different specifications of medium temperature products, otherwise the coil will burn off, seal aging, serious impact on life; 3) medium viscosity, usually below 50cSt. If this value is exceeded and the diameter is greater than 15mm, use the multi-function solenoid valve; Use high viscosity solenoid valve for sizes less than 15mm. 4) when the medium cleanliness is not high, the backwash filter valve should be installed in front of the solenoid valve. When the pressure is low, the diaphragm type solenoid valve can be selected; 5) if the medium is directional flow, and does not allow reverse flow, two-way flow should be used; 6) medium temperature should be selected within the allowable range of the solenoid valve. 2. Pipeline parameters 1) select valve outlet and model according to the requirement of medium flow direction and pipeline c
  • 09 2019-04
    The impact of the automation era on industrial control systems
    The concept of industrial internet is a major trend of this era, and the industrial control technology being developed will also have a lasting impact on specific areas of manufacturing. To address automation and control issues, the industry uses ever-changing technologies in control systems to achieve efficient production or manufacturing processes. These require high quality and reliable control systems. New trends in industrial automation involve the latest control equipment and communication protocols to control field devices such as control valves and other final control components. Some smart devices or instruments used in the automation industry can control process and communication functions without the need to interface with other field-level control devices such as PLCs. What is industrial automation? Industrial automation refers to the use of various control devices such as PC / PLC / DCS to control a variety of operations in an industry without human intervention and provide automatic control performance. In the industry, control strategies use a range of technologies to achieve the required performance or output, making automation systems the most critical part of the industry. Industrial automation involves the use of advanced control strategies such as cascading control, modern control hardware such as PLCs, sensors and other instruments for detecting control variables, signal conditioning devices connecting signals to control devices, drives and other importan
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