How to classify solenoid pulse valves? What are the models of solenoid pulse valves?

Hello, "Jiuzheng Tongming" professional dust removal equipment team will answer for you!

The electromagnetic pulse valve is the actuator and key component of the pulse jet ash cleaning device, which is mainly divided into three categories: right-angle type, submerged type and straight-through type.

The characteristic of the right-angle pulse valve is that the valve air inlet and outlet pipe is at a 90° right angle, so it is called a right-angle valve. The valve diaphragm of the right-angle solenoid pulse valve divides the pulse valve into two air chambers before and after, when the compressed air is turned on, the compressed air enters the rear air chamber through the interception hole, and the pressure of the rear air chamber presses the diaphragm to the output port of the valve, and the pulse valve is in a closed state.

The electrical signal of the pulse injection controller makes the armature of the electromagnetic pulse valve move, the air vent of the air chamber after the pulse valve is opened, the rear air chamber quickly loses pressure, the diaphragm moves back, the compressed air is sprayed through the valve output port, and the pulse valve is in the open state. Compressed air is instantly ejected from the valve, creating a jet airflow.

When the electrical signal of the pulse controller disappears, the armature is reset, the rear air chamber air vent is closed, and the rear air chamber pressure rises so that the diaphragm is close to the valve output port, and the pulse valve is closed again.

The submerged solenoid pulse valve adopts the installation method of submerging in the air bag, so it is called the submerged type. Compared with other forms, the flow resistance is reduced, and the pressure of the injection air source is reduced, so it can be adapted to low pressure occasions, and can reduce energy consumption and extend the life of the diaphragm.

The working principle of the submerged pulse valve is that the diaphragm divides the pulse valve into two chambers, when the compressed air is connected, the compressed air enters the rear air chamber through the throttle hole, and the pressure of the rear air chamber at this time closes the diaphragm close to the output port of the valve, and is in a closed state.

When the electrical signal of the pulse controller makes the armature move, the air vent hole of the rear air chamber of the pulse valve is opened, the rear air chamber quickly loses pressure, the diaphragm moves, and the compressed air is sprayed through the output port of the electromagnetic pulse valve, and the valve is in the open state, and the compressed air flow is sprayed instantly.

The electrical signal of the pulse controller disappears, the armature is reset, the rear air chamber air vent is closed, the rear air chamber pressure rises so that the diaphragm is close to the valve output port, and the pulse valve is closed again.

The structure of the straight-through solenoid pulse valve is characterized by the fact that the air inlet and outlet center line is in a straight line, so it is called a straight-through valve. It works on the same principle as a right-angle solenoid valve. The advantage is that it is easy to install and can be used in the air box pulse dust collector, and the disadvantage is that the resistance is greater when the air flow passes through the valve body.

How to choose a good solenoid pulse valve.

Differences in use:1. The solenoid valve only discharges fluid; The pulse valve has a storage release process.

2. Solenoid valve (electromagnetic valve) is an industrial equipment controlled by solenoids, and is a basic element of automation used to control fluids, which belongs to actuators and is not limited to hydraulics and pneumatics. It is used in industrial control systems to adjust the direction, flow rate, speed and other parameters of the medium.

Purpose: Generally installed in the main oil circuit or shock absorber back pressure oil circuit, at the moment when the transmission automatically upshifts and downshifts or at the beginning of the locking clutch locking and unlocking action, the oil pressure drops, so as to reduce the impact of shifting and locking and unlocking, so that the vehicle runs more balanced.

Function: It is to control the size of the oil pressure in the oil circuit. It is generally installed in the main oil circuit or the back pressure oil circuit of the shock absorber to reduce the oil pressure impact when shifting and locking and unlocking, so that the equipment can run smoothly.

The submerged solenoid pulse valve seat is embedded in the air bag and installed, with low resistance, good flowability, high injection volume, and improved load driving capacity; The application of air source pressure is expanded, and it is more suitable for use in situations with low air source pressure. The common models of submerged solenoid pulse valves are DMF-Y-25, DMF-Y-40S, DMF-Y-50S, DMF-Y-62S, DMF-Y-76S, etc.

The angle between the inlet and outlet of the right-angle solenoid pulse valve is 90 degrees, which is suitable for the installation and connection of the air storage cylinder and the dust removal blowing pipe, and the air flow is smooth, and it can provide the ash cleaning air pulse that meets the requirements. The outer port of the right-angle solenoid pulse valve is at an angle of 90 degrees with the pilot head, and the outer port is generally connected by thread. It can provide atmospheric cleaning gas pulses that meet the requirements.

The common models of right-angle solenoid pulse valves are DMF-Z-20, DMF-Z-25, DMF-Z-40S, DMF-Z-50S, DMF-Z-62S, DMF-Z-76S, etc.

The characteristics of the straight-through solenoid pulse valve is that the air inlet and outlet centerline is in a straight line, the pulse valve diaphragm divides the pulse valve into two air chambers before and after, the pulse valve is in a closed state when the compressed air is connected, and the opening action principle is the same as the right-angle pulse valve, but the flow direction of the air jet is 180 degrees, the advantage of the straight-through pulse pulse valve is that it is easy to install, and it is often used in the pulse air box dust collector, and the disadvantage is that the air flow through the interbody resistance is large. The common models of straight-through solenoid pulse valves are DMF-T-20, DMF-T-25S, DMF-T-40S, DMF-T-50S, DMF-T-70S, etc.

There are mainly the following types of solenoid pulse valves:

Straight-through solenoid pulse valve, right-angle solenoid pulse valve, submerged solenoid pulse valve, speed-coupled solenoid pulse valve, DCF-4 solenoid pulse valve, piston solenoid pulse valve, ASCO solenoid pulse valve.

The latest addition is the intelligent solenoid pulse valve series, which starts with ZNF. For example, ZNF-Y-76S is a commonly used specification model in the market. For other specifications, please refer to the common solenoid pulse valve.

Solenoid valves only discharge fluids considerably. The pulse valve has a storage release process. To use an analogy, both solenoid valves and pulse valves are ventilated. When the solenoid valve is opened, the gas flows smoothly. The pulse valve is ejected with a popping sound.

Working principle of pulse solenoid valve: the coil in the solenoid valve body is input into the forward pulse signal through the wire, and the working magnetic flux generated by the coil makes the moving core engage and open the valve. When the forward pulse signal input is stopped, the moving core is released, and the moving core returns to the initial state under the action of spring force, closing the valve.

In addition, there is a self-holding type, which can be maintained after stopping the input of the positive pulse or power-off, and the negative pulse signal needs to be input to reset; The pulse solenoid valve is to use the pulse of the electrical appliance to convert the pulsation of the machine, so that the powerful energy of the pulsating gas becomes the momentum, and the huge impulse is released in a short time, and the interval of the pulse is controlled by PLC should be determined according to the recovery time of the rated gas pressure. There is a closed cavity in the pulse 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, and the two sides are two electromagnets, which side of the magnet coil energized valve body will be attracted to which side, and the movement of the control valve body is used to block or leak out different oil discharge holes. Pulse solenoid valve use:

Generally, it is installed in the main oil circuit or the back pressure oil circuit of the shock absorber, and the oil pressure drops at the moment when the transmission automatically upshifts and downshifts or when the locking clutch locking and unlocking action begins, so as to reduce the impact of shifting and locking and unlocking, and make the vehicle run more balanced. Its function is to control the size of the oil pressure in the oil circuit.

It is mainly used in the bag type dust collector, which is generally installed at the dust removal port, and the compressed air is sprayed on the filter bag by the opening and closing of the electromagnetic effect control valve, so that the resistance of the dust collector is kept within the set range, so as to ensure the processing capacity and dust collection efficiency of the dust collector.

According to the angle of the valve inlet and outlet and the form of the air inlet, it can be divided into three types:

1.Right-angle solenoid pulse valve: a diaphragm valve with the inlet and outlet of the valve body at right angles and directly controlled by electrical signals

2.Straight-through solenoid pulse valve: a diaphragm valve with 180 degrees at the inlet and outlet of the valve body and directly controlled by electrical signals

3.Submerged solenoid pulse valve: A diaphragm valve in which the air inlet of the valve body is submerged in the air bag and is directly controlled by electrical signals

The working principle of the electromagnetic pulse valve: the electromagnetic pulse valve diaphragm divides the electromagnetic pulse valve into two air chambers, when the compressed air is turned on, the compressed air enters the rear air chamber through the throttle hole, and the pressure of the rear air chamber is close to the output port of the valve, and the electromagnetic pulse valve is in the "closed" state.

The electrical signal of the pulse injection controller makes the armature of the electromagnetic pulse valve move back, the air vent of the air chamber behind the valve is opened, the rear air chamber quickly loses pressure, the diaphragm assembly moves back, the compressed air is sprayed through the valve output port, and the electromagnetic pulse valve is in the "open" state.

The electrical signal of the pulse injection controller disappears, the armature of the electromagnetic pulse valve is reset, the rear air chamber air vent is closed, the rear air chamber pressure rises so that the diaphragm assembly is close to the output port of the valve, and the electromagnetic pulse valve is in the "closed" state again.

How it works.

The diaphragm divides the electromagnetic pulse valve into two air chambers, the front and rear air chambers, when the compressed air enters the rear air chamber through the throttle hole, the pressure of the rear air chamber at this time will be close to the output port of the valve, and the electromagnetic pulse valve is in the "closed" state. The electrical signal of the pulse injection controller disappears, the armature of the electromagnetic pulse valve is reset, the rear air chamber vent is closed, the rear air chamber pressure rises so that the diaphragm is close to the valve outlet, and the electromagnetic pulse valve is in the "closed" state again.

Through the wire, the coil in the solenoid valve body is input into the forward pulse signal, and the working magnetic flux generated by the coil makes the moving core attract and open the valve.

When the forward pulse signal input is stopped, the moving core is released, and the moving core returns to the initial state under the action of spring force, and the closing valve has a self-holding type, which can be maintained after stopping the input of the positive pulse or power-off, and the negative pulse signal needs to be input to reset.

The working principle of the pulse solenoid valve is to use the pulse of the electrical appliance to convert the pulsation of the machine, so that the powerful energy of the pulsating gas becomes momentum, and the huge impulse is released in a short time.

The coil in the solenoid valve body is input into the pulse signal through the wire, and the pulse valve is controlled by the output signal of the pulse injection controller, and the pressure change of the two air chambers before and after the valve is relied on to make the rubber diaphragm flex and deform to realize the opening and closing of the pulse valve.

The diameter of the rubber diaphragm determines the stroke size of the rubber diaphragm and the speed of opening and closing, the larger the diameter of the diaphragm, the larger the stroke and the better the injection performance.