German Max imported electromagnetic valve is widely used in textile, printing, chemicals, plastics, rubber, pharmaceutical, food, building materials, machinery, electrical equipment, surface treatment and other production and scientific research departments and bathroom, dining room, air conditioning and other facilities in the German people's daily lives Max solenoid valve packing description: packed tower is a tower packing equipment as gas-liquid mass transfer between the two phases of the contact members. Tower packed column is always vertical cylinder (as shown above), the bottom with packing support plate, filling in the huddle or the way the whole puzzle is placed on the support plate. Installed above the filler filler plate to avoid being blown updraft. Liquid from the top through the liquid is sprayed onto the filler distribution and flow down along the surface of the filler. Gas is fed from the bottom, the gas distribution unit (small diameter tower is generally no gas distribution unit) after the distribution, and continuous countercurrent liquid through the gap filler layer was on the filler surface, the two-phase gas-liquid mass transfer in close contact . Packed tower belonging to continuous contact liquid mass transfer equipment, two-phase composition changes continuously along the tower, under normal operating state, gas is the continuous phase, liquid phase is dispersed. When the liquid flows down along the filler layer, there is a gradual tendency to concentrate the column wall, such that fluid flow near the column wall increases, a phenomenon known as wall flow. Wall effects caused by liquid two-phase flow in the uneven distribution of the filler layer, so that the mass transfer efficiency. Thus, when the high filler layer, the need for segmentation, the intermediate set redistribution device. Liquid redistribution device comprises a liquid collector and liquid redistribution of two parts, a upper liquid flowing down the packing after liquid collector to collect, to the liquid redistributor, after redistribution sprayed onto the lower packing. Packed column with a large capacity, high separation efficiency, pressure drop, holding a small amount of liquid, operating flexibility and other advantages. Packed column, there are some shortcomings, such as a filler high cost; When the liquid load is small can not effectively wet the filler surface, mass transfer efficiency is reduced; can not be directly used in suspension or easily polymerizable material; lateral wire feed and the material is not suitable for complex distillation and so on. German Max imported electromagnetic solenoid valve works in a sealed chamber, at different locations with holes, each hole leads to a different pipeline, the middle of the chamber is a valve, two is two electromagnets, which faces the magnet coil energize the body will be attracted to which side, by controlling the movement of the valve body to block or leaked oil discharge hole different, and into the hole is always open, the hydraulic oil will enter a different outlet pipe, then through the oil The pressure to push the cylinder piston, the piston rod has led rod drive mechanism moving. Thus by controlling the solenoid off electrical current to control the mechanical movement. Solenoid valve from the principle divided into three categories: a direct-acting solenoid valves: principle: power, the electromagnetic coil generates an electromagnetic force to close the piece is lifted from the seat, the valve opens; when power is off, the electromagnetic force disappears, the spring closure member is pressed on the seat, the valve closes. Features: Can work in a vacuum, negative, zero pressure, but the path is generally not more than 25mm. Two-step direct-acting solenoid valves: principle: it is a direct-acting and pilot-combining principle, when there is no pressure inlet and outlet, the power, the electromagnetic force directly to the pilot valve and main valve closure member in turn Lift, the valve opens. When the inlet and outlet reaches the starting pressure, the power, the electromagnetic force pilot valve, the main valve chamber under increased pressure, the chamber pressure drops, to take advantage of the upward pressure of the main valve open; power, the pilot valve spring force or medium pressure to promote off pieces, moving down, the valve closes. Features: zero pressure or vacuum, high pressure can also be * action, but power is larger, requirements must be mounted horizontally. 3 pilot solenoid valve: Principle: power, the electromagnetic force open the pilot hole, the rapid decline in the upper chamber pressure, closed around the lower parts of high pressure forming, the fluid pressure to promote off pieces to move up, the valve opens; power outages When the spring force of the pilot hole closed, the inlet pressure chamber through the bypass hole quickly shut the valve member is formed around the low pressure on the high fluid pressure to promote the closure of parts moving down, close the valve. Features: high fluid pressure upper limit can be any installation (to be customized) but fluid pressure conditions must be met. 4. solenoid valve with the principles from the difference between the different structures and materials on the on the branch is divided into six categories: direct-acting diaphragm structure, step by step direct-acting diaphragm structure, the pilot diaphragm structure, direct-acting piston structure, step direct-acting structure, the pilot piston structure of the piston. German Max imported electromagnetic valve job characteristics (1) The leakage block extinction, internal leakage and easy to control, safe to use. External leaks are endangering the safety factor. Other automatic control valve will usually stem protruding from the electric, pneumatic, hydraulic actuator control spool rotation or movement. This should solve the long-term operation of the valve stem seals for external leakage problem; only the solenoid is an electromagnetic force is applied to seal the electric control valve is separated from the magnetic core within the sleeve is completed, there is no dynamic seal, so easy to block leakage must . Electric valve torque control difficult, prone to internal leakage, and even pull off the stem head; structural type solenoid valve is easy to control internal leakage, until reduced to zero. Therefore, use of special safety solenoid valve, especially for corrosive, toxic or high temperature media. (2) The system is simple, they take the computer, low modest price. Solenoid valve itself is simple, the price is low, compared to other types of valve actuators easy installation and maintenance. More significant is much simpler automatic control system consisting of the price is much lower. Because the solenoid valve is the switching signal control, and industrial computer connection is very convenient. In today's widespread use of computers, an era of declining prices, the advantages of the solenoid valve is even more pronounced. (3) Action Express, power tiny, lightweight form factor. Solenoid valve response time can be as short as a few milliseconds, even pilot solenoid valve can be controlled within tens of milliseconds. Since the two into the loop, is more sensitive than the other automatic control valve response. Properly designed solenoid valve coil power consumption is very low, an energy-saving products; can be triggered simply moves automatically to maintain valve position, usually is not power. Small size solenoid valve, saving space and light and beautiful. (4) regulation accuracy is limited for the media is limited. Solenoid switches usually only two states, the spool only in the two extreme positions, can not be adjusted continuously, (trying to break a lot of new ideas, but still are in the experimental trial stage) so regulation accuracy is also subject to certain restrictions. Solenoid valve on the media have a higher cleanliness requirements, including granular media can not be applied, the case must first filter out impurities. In addition, the viscous medium can not be applied, and that the particular product is suitable for medium viscosity range is relatively narrow. (5) model and diverse, widely used. Although deficiencies solenoid valve, the advantages are still very prominent, so we designed a wide range of products to meet a variety of needs, extremely versatile. Solenoid valve technology advances are also centered on how to overcome the deficiencies, how to better play the inherent advantages and expand. Germany (Max) Max Valve Corporation since its founding in 1917, experienced a continued successful development history, after long efforts, the company has grown to become the research and manufacture of high-end valve has a certain influence of multinational corporations. 1973 second production plant in Germany Berlin - Mitte, DC establishment, from the mid-1980s, Max (Max) began international activities, the company technological innovation, technology innovation to solve customer problems and apply to the development of new products, helping our customers secure and improve their position in their respective markets, and this is one of the factors in the success of Valve Group worldwide Max (Max). Max company covers 250,000 square meters, registered capital of 75 million euros, the inaugural 2,500 employees in 15 countries around the world has more than 60 production bases and agents, the company is committed to research and development, the use of advanced design and processing means to ensure long-term reliability of the product. German companies have the largest valve product testing center, measurement, physical, chemical testing center, computer center. Financial and personnel strength, with various types of valves in product development, the full capacity of the development, design, casting, machining, assembly, testing, measurement, storage, transportation, and service. Germany (Max) Max valve products include: imports of ball valve, gate valve imports, import butterfly valve, globe valve imports, import filters, valves, solenoid valves imports, import safety valve, valve imports, import trap, import balancing valve, exhaust valve imports, import mud valve, needle valve imports, import discharge valve, imported angle seat valve, shut-off valve of imports, imports of breathing valve, flame arrester import, import filters, import control valve, the valve Material: copper, cast iron, cast steel, carbon steel, WCB, WC6, WC9,20 #, 25 #, forged steel, A105, A216, F11, F22, stainless steel, 304,304L, 316,316L, chrome molybdenum steel, cold steel, titanium steel. Max general agent in China: Shanghai cause Valve Co., Ltd.