CN212480174U - Separated electromagnetic pulse valve - Google Patents

Abstract

The utility model discloses a disconnect-type electromagnetic pulse valve, electromagnetism pilot controller is including the gas holder that is equipped with compressed gas, with the electromagnetism pilot valve inlet port of being connected the trachea switch-on, the electromagnetism pilot valve air bleed hole with external atmosphere switch-on, the electromagnetism pilot valve inflation hole with the gas holder switch-on, electromagnetism pilot valve inlet port, electromagnetism pilot valve air bleed hole, be equipped with between the electromagnetism pilot valve inflation hole and make the switching-over case that switches between electromagnetism pilot valve inlet port and the communicating passageway of electromagnetism pilot valve air bleed hole or electromagnetism pilot valve inlet port and the communicating passageway of electromagnetism pilot valve inflation hole through the control of electromagnetism pilot valve. And the throttling hole of the pulse valve is eliminated, so that the front air chamber of the pulse valve and the rear air chamber of the pulse valve of the main diaphragm are completely separated. The potential safety hazards of detonation and ignition are eliminated in explosive and flammable occasions. When the electromagnetic pilot controller is deflated, air supply supplement is cut off, so that the rear air chamber of the pulse valve is quickly depressurized, and the blowing performance of the pulse valve is improved.

Description

Separated electromagnetic pulse valve

Technical Field

The utility model relates to a disconnect-type electromagnetic pulse valve is applicable to pulse jetting bag collector, belongs to electromagnetic pulse valve technical field.

Background

The bag type dust collector for pulse blowing dust removal appears in the world in the fifties of the last century, and is rapidly popularized due to the characteristics of continuous filtration and dust removal, stable resistance and high air-cloth ratio. The pulse valve blows compressed gas instantly is the power for dust cleaning of the dust remover, and therefore the pulse valve is valued and applied.

The electromagnetic pulse valve is a generator of the dust cleaning air source of the pulse blowing bag type dust collector, and is controlled by the output electric signal of the pulse blowing controller, and the compressed gas is blown to strip off the dust collected on the dust facing surface of the filter bag, so that the resistance of the dust collector operates in a set range.

Working principle of electromagnetic pulse valve (as shown in fig. 1): the main diaphragm 1 divides the big air cavity of the electromagnetic pulse valve into a first front air chamber 2 and a first rear air chamber 3, the auxiliary diaphragm 4 divides the small air cavity into a second front air chamber 5 and a second rear air chamber 6, and after the electromagnetic pulse valve is connected with the air distribution box (air bag), compressed air enters the first rear air chamber 3 and the second rear air chamber 6 through a first throttling hole 7 and a second throttling hole 8 respectively, and the second air release hole 11 and the first air release hole 12 are blocked. The pressure of the first rear air chamber 3 makes the main diaphragm 1 tightly attached to the output port 9, and the electromagnetic pulse valve is in a closed state.

The armature 10 of the electromagnetic pulse valve is moved by the electric signal of the pulse injection controller, the second vent hole 11 is opened, the second rear air chamber 6 loses pressure rapidly, the auxiliary diaphragm 4 moves backwards, the first vent hole 12 is opened, the first rear air chamber 3 loses pressure rapidly, the pressure of the first front air chamber 2 moves backwards the main diaphragm 1, the compressed gas is injected through the output port 9, and the electromagnetic pulse valve is in an 'open' state (as shown in fig. 2).

When the electric signal of the pulse injection controller disappears, the armature 10 of the electromagnetic pulse valve resets, the second vent hole 11 is blocked, the auxiliary diaphragm 4 moves forwards, the first vent hole 12 is blocked, the pressure of the first rear air chamber 3 rises, the main diaphragm 1 is tightly attached to the output port 9, and the electromagnetic pulse valve is in a closed state (as shown in figure 1).

At present, the electromagnetic pulse valve is a standard product of a pulse blowing bag type dust collector at home and abroad. However, in cold regions, the armature 10 (sliding iron core) of the pilot control part in the electromagnetic pulse valve is condensed and frozen, so that the electromagnetic pulse valve cannot be normally opened and closed, and a device (namely, the electromagnetic pilot controller 14) for intensively heating and insulating the electromagnetic pilot control part is formed and becomes an independent product between the pulse injection controller and the pulse valve. The pulse valve is suitable for occasions needing centralized heating and heat preservation and other occasions needing to separate the pulse valve from the electromagnetic pilot part.

As shown in fig. 3, the electromagnetic pilot control part is assembled in the electromagnetic pilot controller 14 and heated and insulated to enable normal operation at low temperature, the pulse valve 15 in the air distribution box 16 is separately arranged from the electromagnetic pilot control part, the two are connected by an air pipe, and the pulse power supply output of the pulse blowing controller 13 is connected with the electromagnetic pilot control part in the electromagnetic pilot controller 14.

When the pulse valve 15 is separately provided from the electromagnetic pilot control portion, the two are connected by an air pipe. The connecting air pipe enlarges the volume of the rear air chamber of the pulse valve 15, increases the time for charging and discharging compressed air in the rear air chamber, lags behind the opening and closing of the pulse valve 15 and influences the blowing performance of the pulse valve 15.

As the nozzle 22 on the dust remover internal blowing pipe 21 is communicated through the orifice 20 on the pulse valve 15 and the electromagnetic pilot valve air release hole 19, as shown in figures 4 and 5. In the case of explosive gas or combustible dust, whether the environment inside the dust remover box or outside the dust remover box needs explosion prevention and combustion prevention, whether the environment inside the dust remover box is positive pressure or negative pressure (the environment outside the dust remover box is sucked by the negative pressure and the gas inside the dust remover box is discharged by the positive pressure). When the air source of the electromagnetic pulse valve loses pressure, as shown in fig. 6 and 7, the air path channels of the orifice 20 of the pulse valve 15, the bleed hole 19 of the electromagnetic pilot valve and the nozzle 22 on the blowing pipe 21 are a safety hazard for explosion prevention and fire prevention.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: when the air source of the electromagnetic pulse valve is in decompression, the potential safety hazards of explosion prevention and fire prevention of the air path channel where the throttling hole of the pulse valve, the air release hole of the electromagnetic pilot valve and the upper nozzle of the injection pipe are located are avoided.

In order to solve the technical problem, the technical scheme of the utility model is to provide a separated electromagnetic pulse valve, which comprises an electromagnetic pilot controller and a pulse valve, wherein the electromagnetic pilot controller is connected with the pulse valve through a connecting air pipe; the pulse valve comprises a pulse valve body, a main diaphragm is arranged in the pulse valve body, the main diaphragm is connected with the top of the inner wall of the pulse valve body through a first spring, a front pulse valve air chamber is arranged in front of the main diaphragm, a rear pulse valve air chamber communicated with a connecting air pipe is arranged behind the main diaphragm, an output port and an input port are arranged on the pulse valve body, the main diaphragm is arranged right opposite to the output port, and the front pulse valve air chamber is communicated with the input port; the electromagnetic pilot controller comprises a shell, and an electromagnetic pilot valve is arranged in the shell, and is characterized in that a front air chamber of the pulse valve and a rear air chamber of the pulse valve are completely isolated and sealed; the electromagnetic pilot controller also comprises an air storage tank filled with compressed gas, an electromagnetic pilot valve air inlet communicated with the connecting air pipe, an electromagnetic pilot valve air outlet communicated with the outside atmosphere and an electromagnetic pilot valve air charging hole communicated with the air storage tank, wherein a channel communicated with the electromagnetic pilot valve air outlet through the electromagnetic pilot valve or a reversing valve core for switching between the electromagnetic pilot valve air inlet and the electromagnetic pilot valve air charging hole through the electromagnetic pilot valve is arranged between the electromagnetic pilot valve air inlet, the electromagnetic pilot valve air discharging hole and the electromagnetic pilot valve air charging hole, and an air source inlet for connecting an air source is arranged on the air storage tank.

Preferably, when the electromagnetic pilot valve is powered off, the air inlet hole of the electromagnetic pilot valve is communicated with the air charging hole of the electromagnetic pilot valve; when the electromagnetic pilot valve is electrified, the air inlet hole of the electromagnetic pilot valve is communicated with the air outlet hole of the electromagnetic pilot valve.

Preferably, the electromagnetic pilot valve aerifys the hole and the switch-on of air chamber behind the electromagnetic pilot valve through first passageway, the electromagnetic pilot valve aerifys the hole and the switch-on of the inlet end of second passageway, it is intraductal to locate guide pin bushing earlier for the end of giving vent to anger of second passageway, the end of giving vent to anger of second passageway is just to the one end of the movable iron core of electromagnetic pilot valve, the other end of movable iron core is just to the one end of quiet iron core, the centre of quiet iron core is equipped with a leading gas release hole that link up, it is intraductal that guide pin bushing earlier is located to movable iron core, the switch-on of air chamber before leading sleeve pipe and the electromagnetic pilot valve.

Preferably, the electromagnetic pilot valve further comprises a sleeve, a coil is arranged outside the sleeve, a movable iron core and a static iron core are arranged in the sleeve, the inner wall of the sleeve is sealed with the outer wall of the static iron core, a gap is arranged between the inner wall of the sleeve and the outer wall of the movable iron core, and the gap is arranged in the guide sleeve.

Preferably, a third spring is arranged between one end of the movable iron core and the sleeve.

Preferably, a reversing valve plate is arranged between the front air chamber of the electromagnetic pilot valve and one end of the reversing valve core; the other end of the reversing valve core is provided with a second spring which enables the reversing valve core to reset; the area of the end part of the reversing valve core, which is positioned in the rear air chamber of the electromagnetic pilot valve, is smaller than the area of the end part of the reversing valve plate in the front air chamber of the electromagnetic pilot valve.

Preferably, the electromagnetic pilot controller further comprises a valve cover, a front valve body and a rear valve body, the valve cover is connected with the rear valve body, the rear valve body is connected with the gas storage tank, the rear valve body is connected with the shell through the front valve body, the electromagnetic pilot valve gas inlet hole, the electromagnetic pilot valve gas outlet hole and the electromagnetic pilot valve gas charging hole are formed in the rear valve body, a first cavity communicated with the electromagnetic pilot valve gas charging hole, a second cavity communicated with the electromagnetic pilot valve gas inlet hole and a third cavity communicated with the electromagnetic pilot valve gas outlet hole are formed in the rear valve body, the second cavity is arranged between the first cavity and the third cavity, hole grooves matched with two ends of the reversing valve core are formed in two ends of the rear valve body respectively, and annular bosses are arranged between the second cavity and the first cavity and between the second cavity and the third cavity; the reversing valve core comprises a cylindrical structure, two circles of bulges matched with the annular boss are arranged in the middle of the cylindrical structure, and pedestal matched with the hole groove are respectively arranged at two ends in the middle of the cylindrical structure; one end of the front valve body is provided with a first groove body providing a forward movement space for the reversing valve core, the other end of the front valve body is provided with a second groove body, one end of the movable iron core is arranged in the second groove body, and the first groove body is communicated with the second groove body through a small hole; the valve cover is provided with a third groove body which provides a space for the reversing valve core to move backwards.

Preferably, the inner diameters of the second cavity, the first cavity and the third cavity are the same and larger than the inner diameter of the annular boss, the inner diameters of the annular boss and the hole groove are the same, the inner diameter of the annular boss is matched with the outer diameter of the protrusion, the inner diameter of the hole groove is matched with the outer diameter of the pedestal, and the outer diameter of the protrusion is the same as the outer diameter of the pedestal and is larger than the outer diameter of the columnar structure; the distance between the two protrusions is greater than the distance between the two annular bosses.

Preferably, the first channel is arranged in the rear valve body, the second channel is divided into two sections and is respectively arranged in the front valve body and the rear valve body, the air inlet ends of the first channel and the second channel are communicated with the third cavity, the air outlet end of the first channel is communicated with the third groove body of the valve cover, and the air outlet end of the second channel is communicated with the second groove body of the front valve body.

Compared with the prior art, the utility model has the advantages of:

1. the throttle hole of the pulse valve is eliminated, so that the front air chamber of the pulse valve of the main diaphragm is completely separated from the rear air chamber of the pulse valve, and a nozzle on an injection pipe in the dust remover is connected with the outside of the dust remover without a pipeline. The potential safety hazards of detonation and ignition are eliminated in explosive and flammable occasions.

2. When the electromagnetic pilot controller is deflated, air supply supplement is cut off, so that the rear air chamber of the pulse valve is quickly depressurized, and the blowing performance of the pulse valve is improved.

3. The pulse valve can be used for blowing and controlling by adopting the same air source or different air sources. The bag type dust collector for hydrogen production or gas purification cannot spray compressed air, and the device in the prior art adopts nitrogen spraying to avoid combustion or explosion, but the purity and quality of hydrogen and gas are influenced after the nitrogen is sprayed; the utility model can blow hydrogen, coal gas and other gases to ensure the purity and quality of the gas. The electromagnetic pilot controller can adopt compressed air and nitrogen, thereby reducing the operation cost of the equipment and ensuring the safety.

Drawings

FIG. 1 is a prior art solenoid pulse valve block diagram (closed);

FIG. 2 is a diagram of a prior art solenoid pulse valve configuration (open);

FIG. 3 is a prior art electromagnetic pilot controller and pulse valve installation diagram;

FIG. 4 is a schematic diagram of a prior art solenoid pilot controller and a pulse valve circuit;

FIG. 5 is a prior art pulse valve block diagram (closed);

FIG. 6 is a prior art pulse valve configuration (open);

FIG. 7 is a schematic diagram of a nozzle pipeline of a blow-off hole and a blow pipe of a conventional electromagnetic pilot controller;

FIG. 8 is a schematic structural view (closed) of a split solenoid pulse valve;

FIG. 9 is a schematic structural diagram (open) of a split solenoid pulse valve;

FIG. 10 is a block diagram of a pulse valve;

FIG. 11 is a block diagram of the electromagnetic pilot controller (air supply off);

FIG. 12 is a block diagram of the electromagnetic pilot controller (air supply open);

FIG. 13 is an enlarged view of a portion of the electromagnetic pilot controller.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model relates to a separated electromagnetic pulse valve, as shown in fig. 8-13, which comprises an electromagnetic pilot controller 14 and a pulse valve 15, wherein the electromagnetic pilot controller 14 is connected with the pulse valve 15 through a connecting air pipe 18; the pulse valve 15 comprises a pulse valve body, a main diaphragm 1 is arranged in the pulse valve body, the main diaphragm 1 is connected with the top of the inner wall of the pulse valve body through a first spring 28, a front pulse valve air chamber 25 is arranged in front of the main diaphragm 1, a rear pulse valve air chamber 26 communicated with the connecting air pipe 18 is arranged behind the main diaphragm 1, an output port 9 and an input port 31 are arranged on the pulse valve body, the main diaphragm 1 is arranged right opposite to the output port 9, and the front pulse valve air chamber 25 is communicated with the input port 31; the electromagnetic pilot controller 14 comprises a shell 65, an electromagnetic pilot valve 36 is arranged in the shell 65, and the front air chamber 25 of the pulse valve and the rear air chamber 26 of the pulse valve are completely isolated and sealed; the electromagnetic pilot controller 14 further comprises an air storage tank 23 filled with compressed air, an electromagnetic pilot valve air inlet 45 communicated with the connecting air pipe 18, an electromagnetic pilot valve air outlet 19 communicated with the outside atmosphere, and an electromagnetic pilot valve inflation hole 32 communicated with the air storage tank 23, wherein a channel for enabling the electromagnetic pilot valve air inlet 45 to be communicated with the electromagnetic pilot valve air outlet 19 or a reversing valve element 35 for switching between the channels for enabling the electromagnetic pilot valve air inlet 45 to be communicated with the electromagnetic pilot valve inflation hole 19 or between the electromagnetic pilot valve air inlet 45 and the electromagnetic pilot valve inflation hole 32 under the control of an electromagnetic pilot valve 36 is arranged between the electromagnetic pilot valve air inlet 45, the electromagnetic pilot valve air outlet 19 and the electromagnetic pilot valve inflation hole 32. When the electromagnetic pilot valve 36 is powered off, the electromagnetic pilot valve air inlet hole 45 is communicated with the electromagnetic pilot valve inflation hole 32; when the electromagnetic pilot valve 36 is energized, the electromagnetic pilot valve inlet port 45 is communicated with the electromagnetic pilot valve bleed port 19.

The pulse valve body comprises a pulse valve cover 29 and a pulse valve body 30 which are fixed together, a pulse valve air-release hole 27 communicated with the connecting air pipe 18 is formed in the top of the pulse valve cover 29, and the pulse valve air-release hole 27 is connected with the connecting air pipe 18 through an air pipe quick-connection plug 17.

The electromagnetic pilot valve inflating hole 32 is communicated with the electromagnetic pilot valve rear air chamber 37 through the first channel 49, the electromagnetic pilot valve inflating hole 32 is communicated with the air inlet end of the second channel 50, the air outlet end of the second channel 50 is arranged in the pilot sleeve 43, the air outlet end of the second channel 50 is just opposite to one end of the movable iron core 40 of the electromagnetic pilot valve 36, the other end of the movable iron core 40 is just opposite to one end of the static iron core 41, the middle of the static iron core 41 is provided with the pilot air release hole 42 which is through, the movable iron core 40 is arranged in the pilot sleeve 43, the pilot sleeve 43 is communicated with the electromagnetic pilot valve front air chamber 39, the electromagnetic pilot valve front air chamber 39 is arranged at one end of the reversing valve core 35, and the electromagnetic pilot valve rear air. The electromagnetic pilot valve 36 further includes a sleeve 63, a coil 64 is disposed outside the sleeve 63, the movable iron core 40 and the stationary iron core 41 are disposed in the sleeve 63, an inner wall of the sleeve 63 is sealed with an outer wall of the stationary iron core 41, a gap is disposed between the inner wall of the sleeve 63 and an outer wall of the movable iron core 40, and the gap is disposed in the pilot sleeve 43. A third spring 44 is arranged between one end of the movable iron core 40 and the sleeve 63. A reversing valve plate 38 is arranged between the electromagnetic pilot valve front air chamber 39 and one end of the reversing valve core 35; the other end of the reversing valve core 35 is provided with a second spring 33 which enables the reversing valve core 35 to reset; the area of the end of the reversing valve core 35 located in the electromagnetic pilot valve rear air chamber 37 is smaller than the area of the end of the reversing valve plate 38 in the electromagnetic pilot valve front air chamber 39.

As shown in fig. 13, the electromagnetic pilot controller 14 further includes a valve cover 46, a front valve body 47 and a rear valve body 48, the valve cover 46 is connected to the rear valve body 48, the rear valve body 48 is connected to the air tank 23, the rear valve body 48 is connected to the housing 65 through the front valve body 47, an electromagnetic pilot valve air intake hole 45, an electromagnetic pilot valve air discharge hole 19, the electromagnetic pilot valve inflation hole 32 is arranged on the rear valve body 48, a first cavity 52 communicated with the electromagnetic pilot valve inflation hole 32, a second cavity 53 communicated with the electromagnetic pilot valve air inlet hole 45 and a third cavity 54 communicated with the electromagnetic pilot valve air outlet hole 19 are arranged in the rear valve body 48, the second cavity 53 is arranged between the first cavity 52 and the third cavity 54, hole grooves 51 matched with two ends of the reversing valve core 35 are respectively arranged at two ends of the rear valve body 48, and annular bosses 55 are respectively arranged between the second cavity 53 and the first cavity 52 and between the second cavity 53 and the third cavity 54; the reversing valve core 35 comprises a cylindrical structure 60, two circles of bulges 61 matched with the annular boss 55 are arranged in the middle of the cylindrical structure 60, and pedestal 62 matched with the hole groove 51 are respectively arranged at two ends in the middle of the cylindrical structure 60; one end of the front valve body 47 is provided with a first groove body 56 providing a forward movement space for the reversing valve core 35, the other end of the front valve body 47 is provided with a second groove body 57, one end of the movable iron core 40 is arranged in the second groove body 57, and the first groove body 56 is communicated with the second groove body 57 through a small hole; the valve cover 46 is provided with a third groove 58 for providing a space for the backward movement of the direction switching valve element 35.

The electromagnetic pilot valve air inlet hole 45 is provided with an air pipe quick-connection plug 17 connected with the connecting air pipe 18.

The inner diameters of the second cavity 53, the first cavity 52 and the third cavity 54 are the same and larger than the inner diameter of the annular boss 55, the inner diameters of the annular boss 55 and the hole groove 51 are the same, the inner diameter of the annular boss 55 is matched with the outer diameter of the protrusion 61, the inner diameter of the hole groove 51 is matched with the outer diameter of the pedestal 62, and the outer diameter of the protrusion 61 is the same as the outer diameter of the pedestal 62 and is larger than the outer diameter of the columnar structure 60. The distance between the two protrusions 61 is greater than the distance between the two annular bosses 55.

The first channel 49 is arranged in the rear valve body 48, the second channel 50 is divided into two sections and is respectively arranged in the front valve body 47 and the rear valve body 48, the air inlet ends of the first channel 49 and the second channel 50 are communicated with the third cavity 54, the air outlet end of the first channel 49 is communicated with the third groove body 58 of the valve cover 46, and the air outlet end of the second channel 50 is communicated with the second groove body 57 of the front valve body 47. The second groove body is in sealing contact connection with the reversing valve plate 38 through a V-shaped sealing ring. The front valve body 47 is provided with a branch communicated with the second channel 50, the end part of the branch is arranged on the side surface of the front valve body 47, and the end part of the branch is provided with a plugging head 59. An electromagnetic pilot valve rear air chamber 37 is formed among the rear valve body 48, the valve cover 46 and the reversing valve core 35, and an electromagnetic pilot valve front air chamber 39 is formed between the reversing valve sheet 38 and the front valve body 47.

The working process of the utility model is as follows:

the utility model discloses an initial state is as shown in fig. 8, fig. 10, fig. 11, and electromagnetic pilot valve 36 is the outage state, and the one end of movable iron core 40 withstands the end of giving vent to anger of second passageway 50, and gaseous follow electromagnetic pilot valve aerifys in hole 32 accesss to the pulse valve rear air chamber 26 of pulse valve 15 for main diaphragm 1 withstands the port of delivery outlet 9 always, seals delivery outlet 9.

When the electromagnetic pilot valve 36 is switched from the power-off state to the power-on state (the power-on time is short, the power-off state is required immediately after the power-on), the state in fig. 8 is changed into the state in fig. 9, the state in fig. 11 is changed into the state in fig. 12, the movable iron core 40 moves forward, one end of the movable iron core 40 is separated from the air outlet end of the second channel 50, the other end of the movable iron core 40 abuts against one end of the stationary iron core 41, the pilot air vent 42 is closed, so that the air from the electromagnetic pilot valve inflation hole 32 enters the second channel 50 and the first channel 49 at the same time, because the end area of the reversing valve core 35 in the electromagnetic pilot valve rear air chamber 37 is smaller than the end area of the reversing valve plate 38 in the electromagnetic pilot valve front air chamber 39, the air pressure borne by the reversing valve plate 38 in the electromagnetic pilot valve front air chamber 39 is larger than the air pressure borne by the end of the reversing valve core 35 in the, a bulge 61 in the annular boss 55 between the first cavity 52 and the second cavity 53 moves backwards into the first cavity 52, a bulge 61 in the third cavity 54 moves backwards into the annular boss 55 between the third cavity 54 and the second cavity 53, so that the electromagnetic pilot valve air inlet hole 45 is communicated with the electromagnetic pilot valve air outlet 19, the electromagnetic pilot valve air inlet hole 45 is isolated from the electromagnetic pilot valve inflation hole 32, that is, the air source is closed, as shown in position B in fig. 12, because no air is introduced into the electromagnetic pilot controller 14 to give pressure to the pulse valve rear air chamber 26 of the pulse valve 15, the air in the air dividing box 16 enters the pulse valve front air chamber 25 from the input port 31, and pushes the main diaphragm 1 open, so that the main diaphragm 1 moves towards the pulse valve rear air chamber 26, and meanwhile, the air in the pulse valve rear air chamber 26 enters the electromagnetic pilot valve air inlet hole 45 through the connecting air pipe 18, then discharged from the electromagnetic pilot valve air bleed hole 19; thus, the gas in the gas distribution box 16 can smoothly enter the outlet 9 and then be discharged from the nozzle into the blowing pipe 21.

When the electromagnetic pilot valve 36 is switched from the power-on state to the power-off state, the state in fig. 9 is changed into the state in fig. 8, the state in fig. 12 is changed into the state in fig. 11, the movable iron core 40 moves backwards, one end of the movable iron core 40 abuts against the air outlet end of the second channel 50, the other end of the movable iron core 40 is separated from the stationary iron core 41, so that the gas coming out of the electromagnetic pilot valve inflation hole 32 cannot enter the second channel 50 and cannot enter the electromagnetic pilot valve front air chamber 39, the pressure on the reversing valve plate 38 in the electromagnetic pilot valve front air chamber 39 disappears, the pressure on the end of the reversing valve core 35 in the electromagnetic pilot valve rear air chamber 37 and the elastic force of the second spring 33 in the electromagnetic pilot valve rear air chamber 37 drive the reversing valve 35 to move forwards together, the gas in the electromagnetic pilot valve front air chamber 39 enters the pilot sleeve 43 through the small hole, and then is discharged to the housing 65 through the pilot air discharge hole 42, and discharging, namely, a protrusion 61 positioned in the first cavity 52 moves forwards into the annular boss 55 between the first cavity 52 and the second cavity 53, and a protrusion 61 positioned in the annular boss 55 between the third cavity 54 and the second cavity 53 moves forwards into the third cavity 54, so that the electromagnetic pilot valve air inlet hole 45 is separated from the electromagnetic pilot valve air outlet hole 19, the electromagnetic pilot valve air inlet hole 45 is communicated with the electromagnetic pilot valve inflation hole 32, namely, the air source is opened, as shown in a position a in fig. 11, so that the air enters the pulse valve rear air chamber 26 from the pulse valve air outlet hole 27 through the connecting air pipe 18, the main diaphragm 1 is pushed to the port of the output port 9, the output port 9 is sealed, so that the output port 9 is separated from the input port 31, and the air in the air distribution box 16 cannot enter the injection pipe 21 through the output port 9.

The gas storage tank 23 is always in a pressure state, and when the pressure in the gas storage tank 23 does not meet the required pressure, the gas storage tank 23 is connected with a gas source through a gas source inlet 24 on the gas storage tank 23 to input gas, so that the pressure in the gas storage tank 23 is increased.

The utility model discloses a technique is separately settled with electromagnetism pilot control part to the pulse valve, cancels the pulse valve orifice, passes through the partial gassing of electromagnetism pilot control with the air chamber behind the pulse valve, changes into and aerifys to the pulse valve by electromagnetism pilot part, has not only improved pulse valve jetting performance, has still cut off the outer airflow channel of pulse valve and dust remover in the dust remover. So that the device can safely operate in the occasions with explosive dust and combustible gas.

Claims (9)

1. A separated electromagnetic pulse valve comprises an electromagnetic pilot controller (14) and a pulse valve (15), wherein the electromagnetic pilot controller (14) and the pulse valve (15) are connected through a connecting air pipe (18); the pulse valve (15) comprises a pulse valve body, a main diaphragm (1) is arranged in the pulse valve body, the main diaphragm (1) is connected with the top of the inner wall of the pulse valve body through a first spring (28), a pulse valve front air chamber (25) is arranged in front of the main diaphragm (1), a pulse valve rear air chamber (26) communicated with a connecting air pipe (18) is arranged behind the main diaphragm (1), an output port (9) and an input port (31) are arranged on the pulse valve body, the main diaphragm (1) is arranged right opposite to the output port (9), and the pulse valve front air chamber (25) is communicated with the input port (31); the electromagnetic pilot controller (14) comprises a shell (65), and an electromagnetic pilot valve (36) is arranged in the shell (65), and is characterized in that a front air chamber (25) of the pulse valve and a rear air chamber (26) of the pulse valve are completely isolated and sealed; the electromagnetic pilot controller (14) further comprises a gas storage tank (23) filled with compressed gas, an electromagnetic pilot valve air inlet hole (45) communicated with the connecting gas pipe (18), an electromagnetic pilot valve air outlet hole (19) communicated with the outside atmosphere, and an electromagnetic pilot valve inflation hole (32) communicated with the gas storage tank (23), wherein a reversing valve element (35) which is controlled by an electromagnetic pilot valve (36) to enable the electromagnetic pilot valve air inlet hole (45) to be switched with a channel communicated with the electromagnetic pilot valve air outlet hole (19) or between the electromagnetic pilot valve air inlet hole (45) and the channel communicated with the electromagnetic pilot valve inflation hole (32) is arranged between the electromagnetic pilot valve air inlet hole (45), the electromagnetic pilot valve air outlet hole (19) and the electromagnetic pilot valve inflation hole (32), and a gas source inlet (24) used for being connected with.

2. A split electromagnetic pulse valve as claimed in claim 1, wherein when said electromagnetic pilot valve (36) is de-energized, the electromagnetic pilot valve inlet hole (45) is communicated with the electromagnetic pilot valve charging hole (32); when the electromagnetic pilot valve (36) is electrified, the electromagnetic pilot valve air inlet hole (45) is communicated with the electromagnetic pilot valve air outlet hole (19).

3. The separated electromagnetic pulse valve according to claim 1 or 2, wherein the electromagnetic pilot valve inflation hole (32) is connected to the electromagnetic pilot valve rear air chamber (37) through a first channel (49), the electromagnetic pilot valve inflation hole (32) is connected to the air inlet end of a second channel (50), the air outlet end of the second channel (50) is arranged in a pilot sleeve (43), the air outlet end of the second channel (50) is opposite to one end of a movable iron core (40) of the electromagnetic pilot valve (36), the other end of the movable iron core (40) is opposite to one end of a stationary iron core (41), a through pilot air vent (42) is arranged in the middle of the stationary iron core (41), the movable iron core (40) is arranged in the pilot sleeve (43), the pilot sleeve (43) is connected to the electromagnetic pilot valve front air chamber (39), the electromagnetic pilot valve front air chamber (39) is arranged at one end of the reversing valve core (35), the electromagnetic pilot valve rear air chamber (37) is arranged at the other end of the reversing valve core (35).

4. A split electromagnetic pulse valve as claimed in claim 3, wherein the electromagnetic pilot valve (36) further comprises a sleeve (63), a coil (64) is disposed outside the sleeve (63), a movable iron core (40) and a stationary iron core (41) are disposed in the sleeve (63), an inner wall of the sleeve (63) is sealed with an outer wall of the stationary iron core (41), a gap is disposed between the inner wall of the sleeve (63) and the outer wall of the movable iron core (40), and the gap is disposed in the pilot sleeve (43).

5. A split electromagnetic pulse valve as claimed in claim 4, wherein a third spring (44) is provided between one end of the plunger (40) and the sleeve (63).

6. A separated electromagnetic pulse valve according to claim 3, characterized in that a reversing valve plate (38) is arranged between the front air chamber (39) of the electromagnetic pilot valve and one end of the reversing valve core (35); the other end of the reversing valve core (35) is provided with a second spring (33) which enables the reversing valve core (35) to reset; the area of the end part of the reversing valve core (35) positioned in the electromagnetic pilot valve rear air chamber (37) is smaller than the area of the end part of the reversing valve plate (38) in the electromagnetic pilot valve front air chamber (39).

7. A separated electromagnetic pulse valve according to claim 3, wherein the electromagnetic pilot controller (14) further comprises a valve cover (46), a front valve body (47) and a rear valve body (48), the valve cover (46) is connected with the rear valve body (48), the rear valve body (48) is connected with the air storage tank (23), the rear valve body (48) is connected with the housing (65) through the front valve body (47), the electromagnetic pilot valve air inlet (45), the electromagnetic pilot valve air outlet (19) and the electromagnetic pilot valve inflation hole (32) are arranged on the rear valve body (48), a first cavity (52) communicated with the electromagnetic pilot valve inflation hole (32), a second cavity (53) communicated with the electromagnetic pilot valve air inlet (45) and a third cavity (54) communicated with the electromagnetic pilot valve air outlet (19) are arranged in the rear valve body (48), the second cavity (53) is arranged between the first cavity (52) and the third cavity (54), two ends of the rear valve body (48) are respectively provided with a hole groove (51) matched with two ends of the reversing valve core (35), and annular bosses (55) are respectively arranged between the second cavity (53) and the first cavity (52) and between the second cavity (53) and the third cavity (54); the reversing valve core (35) comprises a cylindrical structure (60), two circles of bulges (61) matched with the annular boss (55) are arranged in the middle of the cylindrical structure (60), and pedestal (62) matched with the hole groove (51) are respectively arranged at two ends in the middle of the cylindrical structure (60); one end of the front valve body (47) is provided with a first groove body (56) providing a forward movement space for the reversing valve core (35), the other end of the front valve body (47) is provided with a second groove body (57), one end of the movable iron core (40) is arranged in the second groove body (57), and the first groove body (56) is communicated with the second groove body (57) through a small hole; the valve cover (46) is provided with a third groove body (58) which provides a space for the reversing valve core (35) to move backwards.

8. The separated electromagnetic pulse valve according to claim 7, wherein the inner diameters of the second cavity (53), the first cavity (52) and the third cavity (54) are the same and larger than the inner diameter of the annular boss (55), the inner diameters of the annular boss (55) and the hole groove (51) are the same, the inner diameter of the annular boss (55) is matched with the outer diameter of the protrusion (61), the inner diameter of the hole groove (51) is matched with the outer diameter of the pedestal (62), and the outer diameters of the protrusion (61) and the pedestal (62) are the same and are larger than the outer diameter of the cylindrical structure (60); the distance between the two protrusions (61) is greater than the distance between the two annular bosses (55).

9. A separated electromagnetic pulse valve as claimed in claim 7, wherein the first channel (49) is disposed in the rear valve body (48), the second channel (50) is divided into two sections, which are respectively disposed in the front valve body (47) and the rear valve body (48), the air inlet ends of the first channel (49) and the second channel (50) are communicated with the third cavity (54), the air outlet end of the first channel (49) is communicated with the third groove (58) of the valve cover (46), and the air outlet end of the second channel (50) is communicated with the second groove (57) of the front valve body (47).

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