Energy-saving electromagnetic pulse valve

Abstract

The utility model discloses an energy-saving type electromagnetic pulse valve which comprises a valve body, a valve cover arranged on the valve body, a first diaphragm assembly installed between the valve body and the valve cover and a pilot valve assembly installed at the upper end of the valve cover, and the valve body is provided with an air inlet, an air outlet and a first valve port communicated with the air inlet and the air outlet. The pilot valve assembly controls the first diaphragm assembly to open and close the first valve port, the inner wall of an air outlet of the valve body is provided with a concave-convex section so that compressed air can be sprayed out in a pulse mode after passing through the concave-convex section, the inner wall of the air outlet is in a concave-convex arc design so that the compressed air can be sprayed out in a pulse mode after passing through the concave-convex section, and the ash removal effect is improved. Meanwhile, consumption of compressed gas is reduced, and energy waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic pulse valves, in particular to an energy-saving electromagnetic pulse valve. Background Art

[0002] The right-angle pulse valve is a type of electromagnetic pulse valve, mainly used in bag dust collectors. It uses the change in gas pressure to spray the compressed gas in the air bag (gas distribution box) into the air chamber of the bag dust collector and separate the solid dust attached to the filter material. It is a key accessory for bag dust collectors. It is widely used in the fields of dust control and collection in various industries. However, the existing electromagnetic pulse valves still have the problems of general spraying effect, large consumption of compressed gas, and high cost of use. On the other hand, the existing pulse valves with nuts are prone to leakage and loosening during installation, and the pulse valves are complicated to disassemble during inspection and maintenance. Summary of the invention

[0003] The utility model aims to provide an energy-saving electromagnetic pulse valve. The inner wall of the air outlet adopts a concave-convex arc design so that the compressed gas can be ejected in a pulsed manner after passing through the concave-convex section, thereby improving the dust cleaning effect, reducing the consumption of compressed gas and saving energy waste.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions: an energy-saving electromagnetic pulse valve, comprising a valve body, a valve cover arranged on the valve body, a first diaphragm assembly installed between the valve body and the valve cover, and a pilot valve assembly installed on the upper end of the valve cover, the valve body being provided with an air inlet, an air outlet and a first valve port connecting the air inlet and the air outlet, the pilot valve assembly controlling the first diaphragm assembly to open and close the first valve port, the inner wall of the air outlet of the valve body being provided with a concave-convex section so that the compressed gas can be ejected in a pulsed manner after passing through the concave-convex section.

[0005] Furthermore, the concave-convex sections are convex parts and concave parts arranged alternately.

[0006] Furthermore, the concave and convex sections are arranged in an arc shape.

[0007] Furthermore, the first diaphragm assembly includes a first diaphragm, a first sealing plate connected to the lower end of the first diaphragm, a first pressure plate arranged at the upper end of the first diaphragm, and a first elastic member disposed between the first pressure plate and the valve seat, and the first sealing plate is used to seal the first valve port.

[0008] Furthermore, the first diaphragm is provided with a lug, and the lug extends out of the valve body.

[0009] Furthermore, a large chamber is formed between the valve cover and the valve body, and the first diaphragm assembly divides the large chamber into a large chamber a and a large chamber b. A small chamber, an exhaust channel and a second diaphragm assembly arranged in the small chamber are provided in the valve cover. The large chamber a is connected to the small chamber, and the small chamber is connected to the exhaust channel through the second valve port. The second diaphragm assembly is used to seal the second valve port, and the second diaphragm assembly is controlled to open and close the second valve port through the pilot valve assembly, thereby controlling the first diaphragm assembly to open and close the first valve port.

[0010] Furthermore, the second diaphragm assembly includes a second diaphragm, a second pressing plate connected to the upper end of the second diaphragm, and a second elastic member disposed at the upper end of the second pressing plate for pressing the second diaphragm assembly toward the second valve port.

[0011] Furthermore, the valve body is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are vertically arranged, the air inlet is arranged in the air inlet pipe, the air outlet is arranged in the air outlet pipe, and the outer peripheral surface of the air inlet pipe and the air outlet pipe is provided with multiple sections of barbed parts arranged at intervals.

[0012] Furthermore, the inner end of the air inlet pipe corresponding to the barb portion and the upper end of the air outlet pipe corresponding to the barb portion are respectively provided with step portions.

[0013] In summary, the utility model has the following beneficial effects:

[0014] The energy-saving electromagnetic pulse valve of the utility model adopts a concave-convex arc design on the inner wall of the air outlet so that the compressed gas is ejected in a pulsed manner after passing through the concave-convex section, thereby improving the dust cleaning effect, reducing the consumption of compressed gas and saving energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model.

[0016] Figure 2 It is an enlarged view of point A of the present utility model.

[0017] Figure 3 It is an enlarged view of B of the utility model.

[0018] Figure 4 It is a schematic diagram of the avoidance hole of the utility model.

[0019] In the figure: 10, valve body; 11, air inlet; 12, air outlet; 13, first valve port; 14, concave-convex section; 141, raised portion; 142, recessed portion; 15, large chamber; 16, air inlet pipe; 17, air outlet pipe; 18, barb portion; 19, step portion; 20, valve cover; 21, small chamber; 22, exhaust channel; 23, second diaphragm assembly; 24, exhaust hole; 30, first diaphragm assembly; 301, first throttle hole; 31, lug; 32, avoidance hole; 40, pilot valve assembly; 401, coil assembly; 402, moving iron core. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-4 As shown, an energy-saving electromagnetic pulse valve includes a valve body 10, a valve cover 20 arranged on the valve body 10, a first diaphragm assembly 30 installed between the valve body 10 and the valve cover 20, and a pilot valve assembly 40 installed on the upper end of the valve cover 20. The valve body 10 is provided with an air inlet 11, an air outlet 12 and a first valve port 13 connecting the air inlet 11 and the air outlet 12. The pilot valve assembly 40 controls the first diaphragm assembly 30 to open and close the first valve port 13. The inner wall of the air outlet 12 of the valve body 10 has a concave-convex section 14 so that the compressed gas can be ejected in a pulsed manner after passing through the concave-convex section 14. Compared with the original right-angle type, the cleaning effect is better. Conversely, under the same working conditions (i.e., to achieve the same cleaning purpose), it uses less gas, so that the electromagnetic pulse valve reduces the consumption of compressed gas and saves energy waste.

[0022] The concave-convex section 14 is a convex portion 141 and a concave portion 142 that are alternately arranged. The convex portion 141 and the concave portion 142 are sequentially connected and extend to the outer end of the air outlet 12. Furthermore, the concave-convex section 14 is arranged in an arc shape.

[0023] The first diaphragm assembly 30 includes a first diaphragm, a first sealing plate connected to the lower end of the first diaphragm, a first pressure plate arranged at the upper end of the first diaphragm, and a first elastic member arranged between the first pressure plate and the valve seat. The first sealing plate is used to seal the first valve port 13. The first diaphragm is provided with a first throttling hole 301. Furthermore, the first diaphragm is provided with a lug 31, which extends out of the valve body 10. The lug 31 is provided to facilitate the disassembly and assembly of the first diaphragm. Specifically, the valve body 10 is provided with an avoidance hole 32 at the position corresponding to the lug 31. The setting of the avoidance hole 32 further facilitates the operator to disassemble and assemble the first diaphragm.

[0024] A large chamber 15 is formed between the valve cover 20 and the valve body 10, and the first diaphragm assembly 30 divides the large chamber 15 into a large chamber a and a large chamber b. A small chamber 21, an exhaust channel 22 and a second diaphragm assembly 23 arranged in the small chamber 21 are provided in the valve cover 20. The large chamber a is connected to the small chamber 21, and the small chamber 21 is connected to the exhaust channel 22 through the second valve port. The second diaphragm assembly 23 is used to seal the second valve port. The second diaphragm assembly 23 is controlled by the pilot valve assembly 40 to open and close the second valve port, thereby controlling the first diaphragm assembly 30 to open and close the first valve port 13. An exhaust hole 24 connected to the small chamber 21 is provided on the top of the valve cover 20. The pilot valve assembly 40 includes a pilot tube assembly and a coil assembly. The pilot valve assembly 40 is a prior art and is not described in detail in the utility model.

[0025] The second diaphragm assembly 23 includes a second diaphragm, a second pressing plate connected to the upper end of the second diaphragm, and a second elastic member arranged at the upper end of the second pressing plate for pressing the second diaphragm assembly 23 toward the second valve port. The second diaphragm is provided with a second throttling hole.

[0026] When it is necessary to open the electromagnetic pulse valve, the coil assembly 401 is energized through the electrical signal of the pulse controller to generate a magnetic field force. The magnetic force overcomes the gas pressure, small spring force and deadweight of the moving iron core 402 of the pilot tube assembly, thereby attracting the moving iron core 402 and moving the second diaphragm assembly 23 upward. At this time, the exhaust channel 22 on the valve cover 20 is connected with the small chamber 21 and the large chamber a above the first diaphragm assembly 30, and the gas in the large chamber a is quickly discharged. Since the air replenishment speed of the throttle hole 301 on the first diaphragm assembly 30 is lower than the exhaust speed of the exhaust channel 22, the large chamber a loses pressure quickly, and the first diaphragm assembly 30 is pushed upward by the air pressure in the air inlet 11. The first valve port 13 is opened, and the electromagnetic pulse valve is also opened. The compressed gas in the air supply bag passes through the air inlet 11 and is ejected from the air outlet 12 of the valve body 10, forming an instantaneous spray.

[0027] When it is necessary to close the electromagnetic pulse valve, the coil assembly 401 is de-energized through the electrical signal of the pulse controller, the magnetic field force disappears, and the moving iron core 402 of the first tube assembly is reset and blocks the exhaust hole 24 under the action of the small spring. The second diaphragm assembly 23 is also reset and isolates the exhaust channel 22 and the large chamber a. At this time, the compressed gas in the air supply bag enters the large chamber a through the throttle hole 301 on the first diaphragm assembly 30, and the internal pressure of the large chamber a is restored. At the same time, the first diaphragm assembly 30 is reset under the action of the first elastic member, the first valve port 13 in the valve body 10 is closed, and the electromagnetic pulse valve is also closed.

[0028] The valve body 10 is provided with an air inlet pipe 16 and an air outlet pipe 17, the air inlet pipe 16 and the air outlet pipe 17 are arranged vertically, the air inlet 11 is arranged in the air inlet pipe 16, the air outlet 12 is arranged in the air outlet pipe 17, and the outer peripheral surfaces of the air inlet pipe 16 and the air outlet pipe 17 are provided with multiple sections of barb parts 18 arranged at intervals. Furthermore, the inner end of the air inlet pipe 16 corresponding to the barb part 18 and the upper end of the air outlet pipe 17 corresponding to the barb part 18 are respectively provided with step parts 19, and the air inlet 11 and the air outlet 12 of the valve body 10 are arranged into a tubular structure, which is convenient for users to connect with a hose, and the barb part 18 is convenient for installation, which solves the problem that the connection section is easy to leak and difficult to install, and the multi-section barb part 18 is used to prevent loosening from the connection hose.

[0029] 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 energy-saving electromagnetic pulse valve, comprising a valve body (10), a valve cover (20) arranged on the valve body (10), a first diaphragm assembly (30) installed between the valve body (10) and the valve cover (20), and a pilot valve assembly (40) installed on the upper end of the valve cover (20), wherein the valve body (10) is provided with an air inlet (11), an air outlet (12) and a first valve port (13) communicating with the air inlet (11) and the air outlet (12), and the pilot valve assembly (40) controls the first diaphragm assembly (30) to open and close the first valve port (13), characterized in that: The inner wall of the gas outlet (12) of the valve body (10) is provided with a concave-convex section (14), so that the compressed gas can be ejected in a pulsed manner after passing through the concave-convex section (14).

2. The energy-saving electromagnetic pulse valve according to claim 1 is characterized in that: The concave-convex section (14) is a convex portion (141) and a concave portion (142) arranged alternately.

3. The energy-saving electromagnetic pulse valve according to claim 2 is characterized in that: The concave-convex section (14) is arranged in an arc shape.

4. The energy-saving electromagnetic pulse valve according to claim 1, characterized in that: The first diaphragm assembly (30) comprises a first diaphragm, a first sealing plate connected to the lower end of the first diaphragm, a first pressure plate arranged at the upper end of the first diaphragm, and a first elastic member disposed between the first pressure plate and the valve seat, wherein the first sealing plate is used to seal the first valve port (13).

5. The energy-saving electromagnetic pulse valve according to claim 4 is characterized in that: The first diaphragm is provided with a lug (31), and the lug (31) extends out of the valve body (10).

6. The energy-saving electromagnetic pulse valve according to claim 1, characterized in that: A large chamber (15) is formed between the valve cover (20) and the valve body (10), and the first diaphragm assembly (30) divides the large chamber (15) into a large chamber a and a large chamber b. A small chamber (21), an exhaust passage (22), and a second diaphragm assembly (23) arranged in the small chamber (21) are arranged in the valve cover (20). The large chamber a is connected to the small chamber (21), and the small chamber (21) is connected to the exhaust passage (22) through a second valve port. The second diaphragm assembly (23) is used to seal the second valve port. The second diaphragm assembly (23) is controlled to open and close the second valve port through the pilot valve assembly (40), thereby controlling the first diaphragm assembly (30) to open and close the first valve port (13).

7. The energy-saving electromagnetic pulse valve according to claim 6, characterized in that: The second diaphragm assembly (23) comprises a second diaphragm, a second pressing plate connected to the upper end of the second diaphragm, and a second elastic member arranged at the upper end of the second pressing plate for pressing the second diaphragm assembly (23) toward the second valve port.

8. An energy-saving electromagnetic pulse valve according to any one of claims 1 to 7, characterized in that: The valve body (10) is provided with an air inlet pipe (16) and an air outlet pipe (17), the air inlet pipe (16) and the air outlet pipe (17) are arranged vertically, the air inlet (11) is arranged in the air inlet pipe (16), and the air outlet (12) is arranged in the air outlet pipe (17), and the outer peripheral surfaces of the air inlet pipe (16) and the air outlet pipe (17) are provided with a plurality of barb portions (18) arranged at intervals.

9. The energy-saving electromagnetic pulse valve according to claim 8, characterized in that: The inner end of the air inlet pipe (16) corresponding to the barb portion (18) and the upper end of the air outlet pipe (17) corresponding to the barb portion (18) are respectively provided with a step portion (19).

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