How does AirTAC solenoid valve work? 5

Advantages of AirTAC solenoid valves:

AirTAC solenoid valve is the most commonly used of all solenoid valves, which can be controlled by computer or remotely controlled by the connection and disconnection of gas, steam, liquid, oil and other media pipelines. Solenoid valves are widely used in China's mainland market, and the requirements for the medium are not high, and there are many varieties of medium used, a wide range of working pressure, and a long service life.

Working principle of AirTAC solenoid valve:

AirTAC solenoid valve uses a unique structure of primary valve opening and secondary valve opening, and the solenoid valve is closed when there is no power connection. If the power is on, the coil will generate a magnetic field to automatically suck the core, and lift the valve stem to cause the valve port to open automatically, so that the corresponding pressure difference between the top and bottom of the valve plug will be generated, and the piston will be pushed up.

If the medium pressure is relatively small or even zero, then the moving iron core will be pushed up with the valve stem after the piston will become the main valve port, the working principle at this time is only the moving form, the characteristics of the AirTAC solenoid valve is that it can continue to work under the condition of zero pressure difference, and the flow rate is much larger than the pilot valve. The magnetic field disappears automatically when the power supply is disconnected, and the main valve port is automatically closed under the condition of spring and piston self-gravity and pressure difference.

There is a closed cavity in the solenoid valve, there are through holes in different positions, each hole leads to a different oil pipe, the middle of the cavity is the valve, the two sides are two electromagnets, which side of the magnet coil energized valve body will be attracted to which side, by controlling the movement of the valve body to block or leak out different oil discharge holes, and the oil inlet hole is normally open, the hydraulic oil will enter different oil discharge pipes, and then push the piston of the oil cylinder through the pressure of the oil, the piston drives the piston rod again, and the piston rod drives the mechanical device to move. In this way, the mechanical movement is controlled by controlling the current interruption of the electromagnet. Hazelnut Electromechanical.

Hello dear, how to connect the airline of the AirTAC solenoid valve, if the solenoid valve you bought is a five-way valve, that is, there are 5 joints, which are 1 P port, 2 R port, C1 port, C2 port; Or 1 P, 2 R, A, B. Then the way you connect the beam is as follows: the P port is connected to the air source, that is, the pipe from the air compressor, C1 and C2 are connected to the ports at both ends of the cylinder respectively, and the remaining two ports can not be connected.

If it is a four-way valve, then Xiaosou is missing an exhaust valve, that is, there is only one R port. In short, if it is ordinary pneumatic, the exhaust port R can not be connected. By supplying power to the solenoid valve and powering off, the extension and retraction of the cylinder piston rod can be controlled.

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The method of detecting the quality of the AirTAC solenoid valve: first give the AirTAC solenoid valve to the controlled medium (liquid, gas "air" with pressure, the pressure value is the middle value of the pressure range used by the AirTAC solenoid valve), and then energize the coil of the AirTAC solenoid valve, if the controlled medium has a change from the state of the bucket to the broken or from the broken to the through, then the AirTAC solenoid valve is good, otherwise there is a problem. The common faults of AirTAC solenoid valves are concealed

1. Coil short circuit or open circuit: Detection method: first use a multimeter to measure its on-off, and the resistance value tends to be close to zero or infinity, which means that the coil is short-circuited or open-circuited.

If the measurement of its resistance is normal (about tens of ohms), it does not mean that the coil must be good (I once measured a AirTAC solenoid valve coil resistance of about 50 ohms, but the AirTAC solenoid valve can not act, everything is normal after replacing the coil), please carry out the following final test: find a small screwdriver near the metal rod worn in the AirTAC solenoid valve coil, and then energize the AirTAC solenoid valve, if it feels magnetic, then the AirTAC solenoid valve coil is good, otherwise it is bad.

What is the difference between a scale peel and a direct scale, peeling.

When there are small particles or liquids in the weighing need to use a special container, the weighing can be placed on the weighing plate, press the tare key, so that the balance back to zero, and then put the container and the object to be weighed on the weighing plate, the balance display result is the net weight of the object to be weighed.

If the container is removed from the weighing pan, the tare weight (i.e. the weight of the comma) is displayed as a negative value and will remain until the button is pressed again or the device is turned off.

Clear. When the scale is unloaded, if the display is not in the zero state, you can press the zero button to make the balance display back to zero, and then you can carry out normal weighing.

Hello, need, lubrication of pneumatic components: (1) In order to prolong the service life of pneumatic components, except for components that are not lubricated by oil, oil lubrication should generally be given. When feeding oil, a lubricator with a suitable flow rate should be selected.

Lubricating oil that meets ISO VG32 standards should be used, and lubricants harmful to pneumatic seals such as engine oil and spindle oil should not be used. (2) Runwei rough slip method is the first to unscrew the oil injection plug mold of the lubricator, and inject the special lubricating oil into the oil cup (you can also unscrew the oil cup and then screw the oil cup after oil injection), measure about 80% of the volume of the oil cup, and adjust the drip speed at the same time, so that every 1m3 air contains up to 5 drops of lubricating oil. To check whether the lubrication is good, you can put a piece of clean white paper near the exhaust hole of the reversing valve, after the valve has worked for three to four cycles, if there are only very light spots on the paper, it indicates that the lubrication is good.

1. Select the solenoid valve according to the pipeline parameters: diameter specification (i.e., DN) and interface mode

1. Determine the diameter (DN) size according to the inner diameter size or flow requirements of the on-site pipeline.

2. Interface mode, generally》DN50 should choose the flange interface, and greater than or equal to DN50 can be freely selected according to user needs.

2. Select the solenoid valve's material, temperature group according to the fluid parameters

1. Corrosive fluid: corrosion-resistant solenoid valve and all stainless steel should be selected; Edible ultra-clean fluid: it is advisable to choose a food-grade stainless steel solenoid valve.

2. High-temperature fluid: choose a solenoid valve made of high-temperature resistant electrical materials and sealing materials, and choose a piston structure type.

3. Fluid state: large to gaseous, liquid or mixed state, especially when the caliber is greater than DN25, it must be distinguished when ordering.

4. Fluid viscosity: usually below 50cst, you can choose arbitrarily, if it exceeds this value, you should choose a high-viscosity solenoid valve.

3. Select the principle and structure of the solenoid valve according to the pressure parameters

1. Nominal pressure: This parameter has the same meaning as other general valves, and is determined according to the nominal pressure of the pipeline.

2. Working pressure: If the working pressure is low, the principle of direct action or step-by-step direct action must be selected; When the minimum working pressure difference is above, direct-acting, step-by-step direct-acting, and pilot-operated can be selected.

Fourth, electrical selection: the voltage specifications should be preferred AC220V, DC24 is more convenient.

5. Choose according to the length of continuous working time: normally closed, normally open, or continuously energized

1. When the solenoid valve needs to be opened for a long time, and the duration of the time is longer than the time to close, the normally open type should be selected.

2. If the opening time is short or the opening and closing time is not much, the normally closed type is selected.

3. However, some working conditions used for safety protection, such as furnace and kiln flame monitoring, can not be selected as normally open, and should be selected for long-term energization.

6. Select auxiliary functions according to environmental requirements: explosion-proof, non-return, manual, waterproof fog, water shower, diving.

Go to the official website or go directly to their company's sales staff.

Airtac's solenoid valve distinguishes between serious and fake methods, and if you start the product for a long time, you can distinguish the real from the fake at a glance, and the fake AirTAC appearance is rough.

Features of AirTAC solenoid valve: The iron core in the magnetic isolation sleeve of the airtac solenoid valve is completed, and there is no dynamic seal, so the external leakage is easy to block. It is not easy to control the torque of the electric valve, which is easy to cause internal leakage and even break the head of the valve stem; The structure of the solenoid valve is easy to control internal leakage until it is reduced to zero.

Solenoid valves are therefore particularly safe to use, especially for corrosive, toxic or low temperature media.

Uses of AirTAC Solenoid ValvesSolenoid valves are used for on/off control of liquid and gas pipelines and are two-position DO control. It is generally used for the control of small pipes. The motorized valve is used for the analog regulation of the flow rate of the pipeline medium in the liquid, gas and wind system, and is controlled by AI.

In the control of large valves and wind systems, electric valves can also be used for two-position switch control. The solenoid valve can only be used as a switching quantity, it is DO control, and can only be used for small pipeline control, which is common in DN50 and below pipelines, and there are very few upwards.

Electric valves can have AI feedback signals and can be controlled by DO or AO, which can be seen in large pipes and dampers.

1.The solenoid valve is driven by a coil and can only be opened or closed, and the action time is short when opening and closing. The drive of the electric valve is generally driven by a motor, and it takes a certain amount of time to complete the opening or closing action, which can be adjusted. Chi Liang.

2.The solenoid valve is generally very small, and the working pressure difference is very small. For example, the flow coefficient of a 25-caliber solenoid valve is much smaller than that of a 15-caliber electric ball valve.