Electromagnetic pulse valve

Abstract

The utility model discloses an electromagnetic pulse valve, relates to gas circuit valve technical field, the electromagnetic pulse valve includes valve body, bonnet, diaphragm and control solenoid valve, bonnet is fixed on the valve body, the diaphragm floats between the bonnet and the valve body, forms the rear air chamber between the diaphragm and the bonnet, and the control solenoid valve is fixed on the valve body. A front air chamber is formed between the diaphragm and the valve body, and the diaphragm seals and separates the front air chamber and the rear air chamber; the valve body is provided with an air inlet and an air outlet, the air inlet is communicated with the front air chamber, and the diaphragm is provided with a valve pad used for sealing the air outlet; an air inlet of the control electromagnetic valve is communicated with an air source, and an air outlet of the control electromagnetic valve is communicated with the rear air chamber. The electromagnetic valve has the advantages of being capable of avoiding pollution and harm caused by leakage of gas in the valve, high in closing response speed, low in power needed by the coil, simple in structure, convenient to produce and the like.

Description

Technical Field

[0001] The utility model relates to the field of gas path valve technology, in particular to an electromagnetic pulse valve. Background Art

[0002] The electromagnetic pulse valve is a diaphragm valve that combines the electromagnetic valve and the pulse valve and is widely used in the field of industrial control. Figure 1 As shown, an existing electromagnetic pulse valve for bag dust removal has a large valve cover and a valve body separated into a front air chamber and a rear air chamber by a diaphragm; a small valve cover is provided on the large valve cover, and a diaphragm is provided between the small valve cover and the large valve cover to isolate the rear air chamber and the vent hole. Both diaphragms are provided with throttling holes. A coil assembly is provided on the small valve cover. When the coil assembly is energized, the armature moves upward under the attraction of the electromagnetic coil, so that the air above the diaphragm of the small valve cover can be discharged from the vent hole, and the diaphragm between the small valve cover and the large valve cover moves upward under the pressure of the rear air chamber, so that the rear air chamber is connected to the vent hole, and the gas in the rear air chamber is discharged, and then the diaphragm between the rear air chamber and the front air chamber moves upward under the air pressure of the front air chamber, so that the front air chamber is connected to the blowing pipe, and the compressed gas enters the blowing pipe for blowing.

[0003] With respect to the above electromagnetic pulse valve, the inventor believes that there are the following problems:

[0004] 1. The front air chamber supplies air to the rear air chamber through the throttle hole. When exhausting, the gas in the rear air chamber will be discharged into the air. There is a phenomenon that the front air chamber is connected to the atmosphere. At the same time, the front air chamber is connected to the filter medium during the injection. In some toxic and harmful medium filtering applications, there is a situation that the filter medium is connected to the atmosphere, and there is a risk of toxic and harmful media leaking into the atmosphere;

[0005] 2. When the solenoid valve pulse valve is closed, the pressure in the front air chamber drops after the injection, which causes the rear air chamber to inflate slowly, affecting the closing speed of the valve;

[0006] 3. In the above electromagnetic pulse valve, the coil assembly needs to drive the armature to move up and down to block the vent hole, which requires a large coil power and has a high wiring cost;

[0007] 4. The electromagnetic pulse valve mentioned above integrates multiple functional components into a whole, and its structure is complex and the production threshold is high.

[0008] Therefore, there is room for improvement in the above-mentioned electromagnetic pulse valve. Summary of the invention

[0009] The utility model aims to provide an electromagnetic pulse valve, which has the advantages of being able to avoid pollution and harm caused by leakage of gas inside the valve, fast closing response speed, low power required by the coil, simple structure and easy production, etc.

[0010] The above technical objectives of the utility model are achieved through the following technical solutions:

[0011] The utility model provides an electromagnetic pulse valve, the electromagnetic pulse valve comprises a valve body, a valve cover, a diaphragm and a control electromagnetic valve, the valve cover is fixedly arranged on the valve body, the diaphragm is floatingly arranged between the valve cover and the valve body, a rear air chamber is formed between the diaphragm and the valve cover, a front air chamber is formed between the diaphragm and the valve body, and the diaphragm seals and separates the front air chamber and the rear air chamber;

[0012] The valve body is provided with an air inlet and an air outlet, the air inlet is connected to the front air chamber, and the diaphragm is provided with a valve pad for closing the air outlet; the control solenoid valve has a solenoid valve air inlet and a solenoid valve air outlet, the solenoid valve air inlet is connected to the air source, and the solenoid valve air outlet is connected to the rear air chamber.

[0013] In this solution, the diaphragm is floatingly arranged between the front air chamber and the rear air chamber, and the air inlet is connected to the front air chamber to provide compressed gas to the front air chamber; the rear air chamber is connected to the air source by controlling the electromagnetic valve, so that the air source supplies air to the rear air chamber separately. When the electromagnetic pulse valve is closed, the air source supplies air to the rear air chamber, so that the rear air chamber is pressurized. When the air pressure of the rear air chamber is greater than the air pressure of the front air chamber, the valve pad on the diaphragm moves downward to close the air outlet, so that the compressed gas in the front air chamber cannot be ejected from the air outlet; when the electromagnetic pulse valve is opened, the rear air chamber is exhausted, and the air pressure of the front air chamber is greater than that of the rear air chamber, so that the diaphragm and the valve pad move upward to open the air outlet, and the compressed gas in the front air chamber can be ejected from the air outlet. Therefore, in the electromagnetic pulse valve in this solution, the front air chamber and the rear air chamber are isolated from each other, and the gas in the front air chamber will not enter the rear air chamber and leak to the outside, thereby avoiding pollution caused by leakage of gas in the front air chamber and the air outlet. When closing the electromagnetic pulse valve, there is no need for the front air chamber to supply air to the rear air chamber. Compared with the solution in which the gas in the front air chamber enters the rear air chamber from the throttle hole in the traditional electromagnetic pulse valve, the rear air chamber is directly supplied with air through an independent air source in this solution, and the air supply to the rear air chamber is faster, so that the pressure of the rear air chamber is increased quickly, and the diaphragm and valve pad respond more promptly. The control solenoid valve does not need to be integrated in the small valve cover as in the traditional electromagnetic pulse valve, which increases its setting flexibility and reduces the complexity of the electromagnetic pulse valve. There is no need to set a small valve cover, which reduces the manufacturing technology threshold of the electromagnetic pulse valve; the control solenoid valve does not need to drive the armature to move up and down to block the air outlet of the rear air chamber as in the traditional electromagnetic pulse valve, so its load is reduced, thereby reducing the coil power and reducing the wiring cost of the coil. In addition, in this solution, there is no need to set a throttle hole on the diaphragm. Since the rear air chamber is supplied with air through an independent air source, there is no need to set a spring above the valve pad to drive the valve pad to move downward, which simplifies the structure of the electromagnetic pulse valve and reduces the cost of the electromagnetic pulse valve.

[0014] Furthermore, the control solenoid valve is a pilot-operated solenoid valve.

[0015] In this solution, the control solenoid valve is a pilot solenoid valve, which can use the compressed gas in the gas source to provide driving force for the pilot part, further reducing the electromagnetic force required to be provided by the electromagnetic coil and reducing the power required by the coil.

[0016] Furthermore, the control solenoid valve has a manual lever, and the manual lever is used to manually switch the control solenoid valve.

[0017] In this solution, the control solenoid valve has a manual control function, so that the control solenoid valve can be manually controlled to switch the working position, so as to facilitate the debugging of the electromagnetic pulse valve. However, in the transmission electromagnetic pulse valve, since the electromagnetic coil assembly is arranged on the small valve cover, it is difficult to add a manual function due to the structure of the electromagnetic pulse valve.

[0018] Furthermore, the rear air chamber is connected to a quick exhaust valve.

[0019] In this solution, the rear air chamber is connected to a quick exhaust valve, and the quick exhaust valve is used to quickly exhaust the rear air chamber, thereby improving the response speed of the electromagnetic pulse valve.

[0020] Furthermore, the quick exhaust valve is arranged between the control solenoid valve and the rear air chamber, the air inlet end of the quick exhaust valve is connected to the air outlet end of the control solenoid valve, the air outlet end of the quick exhaust valve is connected to the rear air chamber, and the exhaust end of the quick exhaust valve is connected to the outside world.

[0021] In this solution, the quick exhaust valve is arranged between the control solenoid valve and the rear air chamber, and the outlet and inlet ends of the quick exhaust valve are respectively connected to the rear air chamber and the outlet end of the control solenoid valve (i.e., the quick exhaust valve is connected in series between the control solenoid valve and the rear air chamber), so that the installation of the quick exhaust valve does not require the installation of an additional gas pipeline, thereby reducing the cost of the electromagnetic pulse valve. The exhaust end of the quick exhaust valve is connected to the outside world, and the gas discharged from the rear air chamber does not need to flow through the control solenoid valve, thereby improving the response speed.

[0022] Furthermore, the control solenoid valves of the plurality of solenoid pulse valves may be centrally arranged on a manifold, and the control solenoid valves and the quick exhaust valves may be connected with an air pipe.

[0023] In this solution, the control solenoid valves of multiple electromagnetic pulse valves can be concentrated on a manifold for use, and the control solenoid valves are connected to the quick exhaust valves through air pipes, thereby realizing remote control of the electromagnetic pulse valves.

[0024] Furthermore, the control solenoid valve is fixedly arranged on the valve cover to facilitate the transportation and installation of the control solenoid valve and the valve cover.

[0025] Furthermore, an inlet flow passage connected to the rear air chamber is provided on the valve cover, and the inlet flow passage is vertically arranged and connected to the air outlet of the solenoid valve.

[0026] Furthermore, a gas filter device is connected to the air inlet of the solenoid valve, and the gas filter device is used to filter the gas entering the control solenoid valve.

[0027] In this solution, the gas entering the control solenoid valve is filtered by the gas filter device, thereby protecting the control solenoid valve. Since the rear air chamber uses a separate gas source for gas supply and the gas consumption of the rear air chamber is small, it is convenient to set a gas filter device at the air inlet of the solenoid valve to filter the gas entering the rear air chamber.

[0028] Furthermore, the control solenoid valve is a two-position three-way solenoid valve.

[0029] In summary, the utility model has the following beneficial effects:

[0030] In the electromagnetic pulse valve of the utility model, the front air chamber and the rear air chamber are isolated from each other, and the gas in the front air chamber will not enter the rear air chamber and leak to the outside, thus avoiding the pollution caused by the leakage of gas in the front air chamber and the air outlet. When closing the electromagnetic pulse valve, there is no need for the front air chamber to supply air to the rear air chamber, and the rear air chamber is directly supplied with air through an independent air source, which makes the air supply to the rear air chamber faster, so that the pressure of the rear air chamber is increased quickly, and the diaphragm and valve pad respond more promptly, while reducing the complexity of the electromagnetic pulse valve and the manufacturing technology threshold of the electromagnetic pulse valve; the control electromagnetic valve does not need to drive the armature to move up and down to block the air outlet of the rear air chamber as in the traditional electromagnetic pulse valve, so its load is reduced, thereby reducing the coil power and reducing the wiring cost of the coil. In addition, in this solution, there is no need to set a throttle hole on the diaphragm. Since the rear air chamber is supplied with air through an independent air source, there is no need to set a spring above the valve pad to drive the valve pad to move downward, which simplifies the structure of the electromagnetic pulse valve and reduces the cost of the electromagnetic pulse valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the vertical cross-sectional structure of an electromagnetic pulse valve according to an embodiment of the utility model.

[0032] In the figure:

[0033] 1000, solenoid pulse valve; 100, valve body; 110, air inlet; 120, air outlet; 130, valve seat; 200, valve cover; 210, air inlet passage of rear air chamber; 300, diaphragm; 310, valve pad; 400, control solenoid valve; 410, air inlet of solenoid valve; 420, air outlet of solenoid valve; 500, front air chamber; 600, rear air chamber; 700, quick exhaust valve. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings.

[0035] This embodiment discloses an electromagnetic pulse valve 1000, referring to Figure 1 The electromagnetic pulse valve 1000 includes a valve body 100, a valve cover 200, a diaphragm 300 and a control solenoid valve 400. The valve cover 200 is fixedly arranged on the valve body 100, and the diaphragm 300 is floatingly arranged between the valve cover 200 and the valve body 100. A rear air chamber 600 is formed between the diaphragm 300 and the valve cover 200, and a front air chamber 500 is formed between the diaphragm 300 and the valve body 100. The diaphragm 300 seals and separates the front air chamber 500 and the rear air chamber 600.

[0036] The valve body 100 is provided with an air inlet 110 and an air outlet 120. The air inlet 110 is provided on the side of the valve body 100, and the air outlet 120 is provided below the valve body 100. The air inlet 110 and the air outlet 120 are both connected to the front air chamber 500, and a cylindrical valve seat 130 is formed around the air outlet 120. The diaphragm 300 is provided with a valve pad 310 that is sealed with the valve seat 130. The valve pad 310 is located above the valve seat 130 and directly faces the air outlet 120. The valve pad 310 can float downward with the diaphragm 300 and abut against the valve seat 130 to close the air outlet 120. The control solenoid valve 400 has a solenoid valve air inlet 410 and a solenoid valve air outlet 420. The solenoid valve air inlet 410 is connected to a separate air source, and the solenoid valve air outlet 420 is connected to the rear air chamber 600.

[0037] In this embodiment, the air inlet 110 of the valve body 100 and the solenoid valve air inlet 410 of the control solenoid valve 400 are connected to different external air sources. The air inlet 110 is connected to the front air chamber 500 to provide compressed gas to the front air chamber 500, and the rear air chamber 600 is connected to the air source through the control solenoid valve 400, so that the air source supplies air to the rear air chamber 600 separately. When the electromagnetic pulse valve 1000 is closed, the air source supplies air to the rear air chamber 600, so that the rear air chamber 600 is pressurized. When the air pressure of the rear air chamber 600 is greater than the air pressure of the front air chamber 500, the valve pad 310 on the diaphragm 300 moves downward to close the air outlet 120, so that the compressed gas in the front air chamber 500 cannot be ejected from the air outlet 120. When the electromagnetic pulse valve 1000 is opened, the rear air chamber 600 is exhausted, and the air pressure in the front air chamber 500 is greater than that in the rear air chamber 600 , so that the diaphragm 300 and the valve pad 310 move upward, opening the air outlet 120 , and the compressed gas in the front air chamber 500 can be ejected from the air outlet 120 .

[0038] The front air chamber 500 and the rear air chamber 600 are isolated from each other by the diaphragm 300, and the gas in the front air chamber 500 will not enter the rear air chamber 600 and leak to the outside, thus avoiding pollution caused by the leakage of gas in the front air chamber 500 and the air outlet 120. When the electromagnetic pulse valve 1000 is closed, there is no need for the front air chamber 500 to supply air to the rear air chamber 600. Compared with the solution in which the gas in the front air chamber 500 enters the rear air chamber 600 from the throttle hole in the traditional electromagnetic pulse valve 1000, the rear air chamber 600 is directly supplied with air through an independent air source in this solution, and the air supply to the rear air chamber 600 is faster, so that the pressure of the rear air chamber 600 is increased quickly, and the diaphragm 300 and the valve pad 310 respond in time.

[0039] In this embodiment, the air circuit of the control solenoid valve 400 is independent of the air circuits on the valve body 100 and the valve cover 200, so that the control solenoid valve 400 does not need to be integrated in the small valve cover 200 as in the traditional electromagnetic pulse valve 1000, which increases its setting flexibility and reduces the complexity of the electromagnetic pulse valve 1000. There is no need to set a small valve cover 200, which reduces the manufacturing technology threshold of the electromagnetic pulse valve 1000. The control solenoid valve 400 does not need to drive the armature to move up and down to block the air outlet of the rear air chamber 600 as in the traditional electromagnetic pulse valve 1000, so its load is reduced, thereby reducing the coil power and reducing the wiring cost of the coil.

[0040] In this embodiment, there is no need to set a throttling hole on the diaphragm 300. Since the rear air chamber 600 is supplied with air through an independent air source, there is no need to set a spring above the valve pad 310 to drive the valve pad 310 to move downward, which simplifies the structure of the electromagnetic pulse valve 1000 and reduces the cost of the electromagnetic pulse valve 1000.

[0041] In this embodiment, the control solenoid valve 400 is a pilot solenoid valve, which includes a valve body and a pilot part, the pilot part includes a coil and an iron core, and the iron core is in contact with the valve stem of the valve body. The pilot part is connected to the air inlet channel of the valve body through an air path, and the air source can provide compressed gas to the pilot part, so that the pilot part can use the compressed gas in the air source to provide a driving force for the movement of the valve stem, further reducing the electromagnetic force required to be provided by the electromagnetic coil and reducing the power required by the coil.

[0042] In the transmission electromagnetic pulse valve 1000, since the electromagnetic coil assembly is arranged on the small valve cover 200, it is difficult to add a manual function due to the structure of the electromagnetic pulse valve 1000. In this embodiment, the control electromagnetic valve 400 is selected as a solenoid valve with a manual lever, and the control electromagnetic valve 400 is manually switched by the manual lever, so that the control electromagnetic valve 400 has a manual control function, so that the control electromagnetic valve 400 can be manually controlled to switch the working position, so as to facilitate the debugging of the electromagnetic pulse valve 1000.

[0043] In this embodiment, the control solenoid valve 400 is specifically a two-position three-way solenoid valve.

[0044] The rear air chamber 600 is connected to a quick exhaust valve 700. The quick exhaust valve 700 is used to quickly exhaust the rear air chamber 600, thereby improving the response speed of the electromagnetic pulse valve 1000. The quick exhaust valve 700 is arranged between the control electromagnetic valve 400 and the rear air chamber 600, and the quick exhaust valve 700 has an air inlet end, an air outlet end and an exhaust end. The air inlet end of the quick exhaust valve 700 is connected to the air outlet end of the control electromagnetic valve 400, and the air outlet end of the quick exhaust valve 700 is connected to the rear air chamber 600, that is, the quick exhaust valve 700 is connected in series between the control electromagnetic valve 400 and the rear air chamber 600, so that the installation of the quick exhaust valve 700 does not require the installation of an additional air pipeline, thereby reducing the cost of the electromagnetic pulse valve 1000.

[0045] The exhaust end of the quick exhaust valve 700 is connected to the outside, and the gas exhausted from the rear air chamber 600 does not need to flow through the control solenoid valve 400, thereby improving the response speed.

[0046] Preferably, the control solenoid valves 400 of the plurality of electromagnetic pulse valves 1000 are centrally arranged on a manifold. The control solenoid valve 400 is connected to the quick exhaust valve 700 through an air pipe, thereby realizing remote control of the electromagnetic pulse valve 1000 and facilitating the arrangement of the gas pipeline. In addition, in other embodiments, the control solenoid valve 400 of the electromagnetic pulse valve 1000 may also be independently arranged. In other embodiments, the control solenoid valve 400 may also be fixedly arranged on the valve cover 200 to facilitate the handling and installation of the control solenoid valve 400 and the valve cover 200.

[0047] The valve cover 200 is provided with an intake channel 210 connected to the rear air chamber 600. The intake channel 210 is vertically arranged and connected to the air outlet 120 of the control solenoid valve 400. The valve cover 200 is connected to the rear air chamber 600 through the intake channel 210, and the control solenoid valve 400 is connected to the rear air chamber 600 through the intake channel 210. The intake channel 210 is vertically arranged, so that the intake channel 210 can be easily formed by turning or the like.

[0048] In this embodiment, a gas filter device is connected to the solenoid valve air inlet 410, and the gas entering the control solenoid valve 400 is filtered by the gas filter device, thereby protecting the control solenoid valve 400. Since the rear air chamber 600 uses a separate air source for gas supply and the rear air chamber 600 consumes little gas, it is convenient to set a gas filter device at the solenoid valve air inlet 410 to filter the gas entering the rear air chamber 600.

[0049] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An electromagnetic pulse valve, characterized in that: The electromagnetic pulse valve (1000) comprises a valve body (100), a valve cover (200), a diaphragm (300) and a control electromagnetic valve (400); the valve cover (200) is fixedly arranged on the valve body (100); the diaphragm (300) is floatingly arranged between the valve cover (200) and the valve body (100); a rear air chamber (600) is formed between the diaphragm (300) and the valve cover (200); a front air chamber (500) is formed between the diaphragm (300) and the valve body (100); and the diaphragm (300) seals and separates the front air chamber (500) and the rear air chamber (600); The valve body (100) is provided with an air inlet (110) and an air outlet (120), the air inlet (110) is connected to the front air chamber (500), and the diaphragm (300) is provided with a valve pad (310) for closing the air outlet (120); the control solenoid valve (400) has a solenoid valve air inlet (410) and a solenoid valve air outlet (420), the solenoid valve air inlet (410) is connected to an air source, and the solenoid valve air outlet is connected to the rear air chamber (600).

2. The electromagnetic pulse valve according to claim 1, characterized in that: The control solenoid valve (400) is a pilot-operated solenoid valve.

3. The electromagnetic pulse valve according to claim 1 or 2, characterized in that: The control solenoid valve (400) has a manual lever, and the manual lever is used to manually switch the control solenoid valve (400).

4. The electromagnetic pulse valve according to claim 3, characterized in that: The rear air chamber (600) is connected to a quick exhaust valve (700).

5. The electromagnetic pulse valve according to claim 4, characterized in that: The quick exhaust valve (700) is arranged between the control solenoid valve (400) and the rear air chamber (600), the air inlet end of the quick exhaust valve (700) is connected to the air outlet end of the control solenoid valve (400), the air outlet end of the quick exhaust valve (700) is connected to the rear air chamber (600), and the exhaust end of the quick exhaust valve (700) is connected to the outside.

6. The electromagnetic pulse valve according to claim 4, characterized in that: The control solenoid valves (400) of the plurality of solenoid pulse valves (1000) can be centrally arranged on a manifold, and the control solenoid valves (400) and the quick exhaust valves (700) are connected by air pipes.

7. The electromagnetic pulse valve according to claim 1 or 2, characterized in that: The control solenoid valve (400) is fixedly arranged on the valve cover (200).

8. The electromagnetic pulse valve according to claim 1, characterized in that: The valve cover (200) is provided with an inlet flow passage (210) connected to the rear air chamber (600); the inlet flow passage (210) is vertically arranged and connected to the solenoid valve air outlet (420).

9. The electromagnetic pulse valve according to claim 1, characterized in that: The solenoid valve air inlet (410) is connected to a gas filtering device, and the gas filtering device is used to filter the gas entering the control solenoid valve.

10. The electromagnetic pulse valve according to claim 1, characterized in that: The control solenoid valve (400) is a two-position three-way solenoid valve.

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