Repeated spraying container valve for fire extinguishing agent bottle group

Abstract

The utility model provides a multi-spraying container valve for a fire extinguishing agent bottle group, and belongs to the technical field of valves. The technical problem that an existing container valve cannot be automatically opened and closed repeatedly and circularly is solved. A repeated spraying container valve for a fire extinguishing agent bottle set comprises a valve body, a valve cover, a piston and an electromagnetic driving device, an air inlet hole, an air outlet hole and a first cavity are formed in the valve body, the lower end of the piston can abut against or be away from the air inlet hole to close or open the air outlet hole, a quantitative hole is formed in the piston, and a second cavity is formed between the electromagnetic driving device and the valve cover. The connecting seat and the valve cover are simultaneously provided with air passing holes which are communicated with the first cavity and the second cavity all the time, the connecting seat and the valve cover are simultaneously provided with exhaust holes, the electromagnetic driving device can close or open the exhaust holes, the container valve is further provided with a first exhaust cavity, and the diameter of the exhaust holes is larger than that of the flow holes. The container valve can be automatically and circularly opened and closed and is high in utilization rate.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically referring to a multi-discharge container valve for fire extinguishing agent cylinder groups. Background Technology

[0002] Most existing fire extinguishing agent cylinder refill valves use an electromagnetic drive device to drive a rod needle to puncture a diaphragm to activate the valve. After use, the diaphragm is reinstalled on the valve for reuse. However, this structure causes many inconveniences for users and wastes the gas in the fire extinguishing agent cylinder, resulting in low utilization. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-utilization multi-discharge container valve for fire extinguishing agent cylinders that can automatically cycle open and close.

[0004] The objective of this utility model can be achieved through the following technical solution: A multi-discharge container valve for fire extinguishing agent cylinders includes a valve body, a valve cover, and an electromagnetic drive device fixedly installed on the valve cover. A connecting seat is fixedly connected between the valve body and the valve cover. The valve body is provided with an air inlet, an air outlet, and a first chamber. A piston is provided in the first chamber and is slidably and sealingly connected to the inner wall of the first chamber. One end of the connecting seat is sealed and fixedly embedded in the upper part of the first chamber. The lower end of the piston can abut against or move away from the air inlet to close or open the air outlet. The piston has a metering orifice that always connects the air inlet and the first chamber. A second chamber is provided between the electromagnetic drive device and the valve cover. The connecting seat and the valve cover both have vents that always connect the first chamber and the second chamber. The connecting seat and the valve cover also have exhaust holes. The electromagnetic drive device can close or open the exhaust holes. The container valve is also provided with a first exhaust chamber that always connects to the exhaust holes. The diameter of the exhaust hole is larger than the diameter of the flow orifice. The first chamber is part of the valve body cavity and is formed by the connecting seat and the piston sealing and enclosing it.

[0005] Furthermore, the piston includes a first sealing post and a second sealing post. The outer diameter of the first sealing post is larger than the outer diameter of the second sealing post. A positioning convex ring protrudes from the valve body toward the piston. The first sealing post is slidably connected to the inner wall of the first chamber, and the second sealing post is slidably connected to the positioning convex ring. The first sealing post, the second sealing post, and the positioning convex ring together form a second exhaust chamber.

[0006] Furthermore, the outer circumferential surface of the first sealing column is recessed inward to form a sealing groove, and a sealing element is disposed within the sealing groove.

[0007] Furthermore, the inner circumferential surface of the positioning convex ring is recessed into a second sealing groove, and a second sealing element is provided in the second sealing groove.

[0008] Furthermore, a spring is provided between the connecting seat and the piston.

[0009] Furthermore, a sealing gasket and a metering valve core are fixedly provided at one end of the piston near the air inlet, the metering valve core being located in the middle of the sealing gasket, and the metering hole being located on the metering valve core.

[0010] Furthermore, the valve body, valve cover, and connector together form a first exhaust chamber, and the connector is provided with a flow channel formed by mutually perpendicular exhaust holes.

[0011] Furthermore, the electromagnetic drive device includes a moving iron core and a sealing block.

[0012] Furthermore, the valve body is also provided with an air inlet and a pressure relief inlet.

[0013] Furthermore, the valve cover is equipped with a manual start device that communicates with the exhaust port.

[0014] Compared with the prior art, the technical effect of this utility model is as follows: by cooperating the flow channels of the air inlet, the first chamber, the second chamber, the exhaust port and the first exhaust chamber, the lower end of the piston can be driven by the electromagnetic drive device to close or open the exhaust port by touching or moving away from the air inlet, thereby realizing automatic cycle opening and closing of the valve and improving utilization. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention.

[0016] Figure 2 This is an enlarged view of section A of this utility model.

[0017] Figure 3 This is a partial cross-sectional view of the present invention from another angle.

[0018] Drawing number markings: 1. Valve body; 101. Air inlet; 102. Air outlet; 103. Positioning protrusion ring; 104. Sealing groove two; 105. Air filling hole; 106. Pressure relief hole; 2. Valve cover; 3. Electromagnetic drive device; 301. Moving iron core; 302. Sealing block; 4. Connecting seat; 5. Piston; 501. Metering hole; 502. First sealing column; 503. Second sealing column; 504. Sealing groove one; 6. First chamber; 7. Second chamber; 8. Vent hole; 9. Exhaust port; 10. First exhaust chamber; 11. Second exhaust chamber; 12. Spring; 13. Sealing gasket; 14. Metering valve core; 15. Mounting hole; 16. Inflation nozzle; 17. Pressure indicator; 18. First pad; 19. Second pad; 20. Pressure relief pad; 21. Sealing diaphragm; 22. Manual handle; 23. Manual valve core; 24. Manual push rod; 25. Elastic reset element. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] according to Figures 1 to 3 As shown, a multi-discharge container valve for fire extinguishing agent cylinders includes a valve body 1, a valve cover 2, and an electromagnetic drive device 3 fixedly mounted on the valve cover 2. The electromagnetic drive device 3 includes a moving iron core 301 and a sealing block 302. The electromagnetic drive device 3 utilizes the electromagnetic attraction generated when the electromagnet coil is energized to drive the moving iron core 301 to push or pull the sealing block 302 to close or open the vent hole 9.

[0021] A connecting seat 4 is fixedly connected between the valve body 1 and the valve cover 2. The valve body 1 is provided with an air inlet 101, an air outlet 102, and a first chamber 6. The first chamber 6 is part of the inner cavity of the valve body 1. The first chamber 6, which is used for pneumatic control, is formed by being sealed and enclosed by the connecting seat 4 and the piston 5. The piston 5 is provided in the first chamber 6 and is slidably and sealingly connected to the inner wall of the first chamber 6. One end of the connecting seat 4 is sealed and fixedly embedded in the upper part of the first chamber 6. The lower end of the piston 5 can abut against or move away from the air inlet 101 to close or open the air outlet 102.

[0022] The piston 5 has a metering orifice 501 that is always connected to the inlet port 101 and the first chamber 6. A second chamber 7 is located between the electromagnetic drive device 3 and the valve cover 2. The connecting seat 4 and the valve cover 2 both have venting holes 8 that are always connected to both the first chamber 6 and the second chamber 7. The connecting seat 4 and the valve cover 2 also have exhaust holes 9, which are vertically and horizontally aligned and connected. The electromagnetic drive device 3 can close or open the exhaust holes 9. The container valve also has a first exhaust chamber 10 that is always connected to the exhaust holes 9. The diameter of the exhaust holes 9 is larger than the diameter of the flow orifice. A spring 12 is located between the connecting seat 4 and the piston 5. The piston 5 includes a first sealing post 502 and a second sealing post 503. The outer diameter of the first sealing post 502 is larger than the outer diameter of the second sealing post 503. A positioning ring 103 protrudes from the valve body 1 toward the piston 5. The first sealing post 502 is slidably connected to the inner wall of the first chamber 6, and the second sealing post 503 is slidably connected to the positioning ring 103. The first sealing post 502, the second sealing post 503, and the positioning ring 103 together form a second exhaust chamber 11. The outer circumference of the first sealing post 502 has an inwardly recessed sealing groove 504, and a first sealing element is disposed in the sealing groove 504. The inner circumference of the positioning ring 103 has an inwardly recessed sealing groove 104, and a second sealing element is disposed in the sealing groove 104.

[0023] A sealing gasket 13 and a metering valve core 14 are fixedly installed at one end of the piston 5 near the air inlet 101. The metering valve core 14 is located in the middle of the sealing gasket 13, and the metering orifice 501 is located on the metering valve core 14. The metering orifices 501 are arranged from small to large.

[0024] The valve body 1 is also provided with an inflation port 105 and a pressure relief port 106. Both the inflation port 105 and the pressure relief port 106 are perpendicular to and connected to the air inlet port 101. Both the inflation port 105 and the pressure relief port 106 are stepped holes of increasing size. An inflation nozzle 16 is sealed and fixedly installed in the inflation port 105, and a pressure indicator 17 is fixedly connected to the outside of the inflation nozzle 16. A pressure relief valve is sealed and fixedly connected inside the pressure relief port 106. The pressure relief valve includes a first pad 18 and a second pad 19. A sealing diaphragm 21 is fixedly installed between the first pad 18 and the second pad 19. The sealing diaphragm 21 is located in the hollow part between the first pad 18 and the second pad 19 and is arc-shaped. A pressure relief pad 20 is fixedly installed outside the second pad 19.

[0025] The valve cover 2 is provided with a manual start device that communicates with the exhaust port 9. The valve cover 2 is provided with a vertical mounting hole 15 that communicates with the first vent 8. The manual start device is fixedly installed in the mounting hole 15. The manual start device includes a manual handle 22 and a manual valve core 23. A manual push rod 24 is provided between the manual handle 22 and the manual valve core 23. An elastic reset member 25 passes through the outer periphery of the manual handle 22. Pressing the manual handle 22 causes the manual push rod 24 to drive the manual valve core 23 to move inward, and the first vent 8 and the manual outlet are connected, so that the first chamber 6 is quickly depressurized and the vent 102 is opened.

[0026] Each time the valve is opened and closed, it cycles through a state of rest-start-close-rest.

[0027] In the initial state, the electromagnetic drive device 3 blocks the exhaust port 9, and the gas enters the first chamber 6 and the second chamber 7 through the metering orifice 501. The gas pressure in the first chamber 6, the second chamber 7 and the air inlet 101 is the same. The cross-section of the sealing surface of the first sealing column 502 is the first force-bearing surface, and the cross-section of the sealing surface of the second sealing column 503 is the second force-bearing surface. The area of ​​the first force-bearing surface is larger than the area of ​​the second force-bearing surface. Under the action of the same high pressure, the downward force on the piston 5 is greater than the upward force on the piston 5. Therefore, the sealing gasket 13 at the lower end of the piston 5 is pressed tightly on the air inlet 101, and the piston 5 completely blocks the exhaust port 102. The metering valve core 14 is located in the middle of the sealing gasket 13 to keep the metering orifice 501 always connected to the air inlet 101, ensuring good sealing between the piston 5 and the exhaust port 102, and ensuring that there is high pressure in both the first chamber 6 and the air inlet 101. The initial state is the state when not in use. At this time, the spring 12 is close to its natural state. The valve cover 2 assembly and the piston 5 are not subjected to the force of the spring 12 and maintain a balanced state for a long time, thus extending the service life of the piston 5 and the valve cover 2 assembly.

[0028] In the open state, when the electromagnetic drive device 3 is energized, it opens the exhaust port 9. Gas from the first chamber 6 and the second chamber 7 rapidly enters the first exhaust chamber 10 through the exhaust port 9 and is discharged. The first chamber 6 quickly depressurizes. Because the diameter of the exhaust port 9 is larger than the diameter of the metering orifice 501, the gas pressure in the first chamber 6, while present, cannot rise to the same level as the inlet port 101. The downward force on piston 5 is less than the upward force on piston 5, causing piston 5 to be pushed upwards, opening the outlet port 102. The valve opens quickly. At this time, spring 12 is compressed.

[0029] In the closed state, when the electromagnetic drive device 3 is de-energized, it re-seals the exhaust port 9. At this time, the exhaust port 9 is closed, and the depressurization state of the first chamber 6 is canceled. While the first chamber 6 is still being pressurized, as long as the forces at both ends of the piston 5 are close, the piston 5 can quickly seal the exhaust port 102 under the restoring force of the spring 12, without waiting for the air pressure in the first chamber 6 to rise to the same level as the air pressure in the inlet port 101. The entire closing process takes about 1.5 seconds. The closing is sensitive, reducing waste. After the piston 5 seals the exhaust port 102, the pressure in the first chamber 6 continues to rise. When the air pressure in the first chamber 6 and the second chamber 7 rises to the same level as the air pressure in the inlet port 101, the valve returns to a stationary state.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A multi-discharge container valve for fire extinguishing agent cylinder groups, comprising a valve body (1), a valve cover (2), and an electromagnetic drive device (3) fixedly mounted on the valve cover (2), characterized in that: A connecting seat (4) is fixedly connected between the valve body (1) and the valve cover (2). The valve body (1) is provided with an air inlet (101), an air outlet (102), and a first chamber (6). A piston (5) is provided in the first chamber (6) and is slidably sealed to the inner wall of the first chamber (6). One end of the connecting seat (4) is sealed and fixedly embedded in the upper part of the first chamber (6). The lower end of the piston (5) can abut against or move away from the air inlet (101) to close or open the air outlet (102). The piston (5) has a connection between the air inlet (101) and the first chamber (6) that is always connected. The chamber (6) has a metering orifice (501), and there is a second chamber (7) between the electromagnetic drive device (3) and the valve cover (2). The connecting seat (4) and the valve cover (2) have vent holes (8) that are always connected to the first chamber (6) and the second chamber (7). The connecting seat (4) and the valve cover (2) also have exhaust holes (9). The electromagnetic drive device (3) can close or open the exhaust hole (9). The container valve is also provided with a first exhaust chamber (10) that is always connected to the exhaust hole (9). The diameter of the exhaust hole (9) is larger than the diameter of the flow orifice.

2. The multi-discharge container valve for fire extinguishing agent cylinder assembly according to claim 1, characterized in that: The piston (5) includes a first sealing post (502) and a second sealing post (503). The outer diameter of the first sealing post (502) is larger than the outer diameter of the second sealing post (503). A positioning ring (103) protrudes from the valve body (1) toward the piston (5). The first sealing post (502) is slidably connected to the inner wall of the first chamber (6). The second sealing post (503) is slidably connected to the positioning ring (103). The first sealing post (502), the second sealing post (503) and the positioning ring (103) together form a second exhaust chamber (11).

3. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 2, characterized in that: The outer periphery of the first sealing column (502) is recessed inward with a sealing groove (504), and a sealing element is provided in the sealing groove (504).

4. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 2, characterized in that: The positioning protrusion ring (103) has a sealing groove (104) recessed inward on its inner circumference, and a sealing element (2) is provided in the sealing groove (104).

5. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 1, characterized in that: A spring (12) is provided between the connecting seat (4) and the piston (5).

6. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 1, characterized in that: The piston (5) is fixedly provided with a sealing gasket (13) and a metering valve core (14) at one end near the air inlet (101). The metering valve core (14) is located in the middle of the sealing gasket (13), and the metering hole (501) is located on the metering valve core (14).

7. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 1, characterized in that: The valve body (1), valve cover (2) and connector together form a first exhaust chamber (10), and the connector is provided with a flow channel formed by mutually perpendicular exhaust holes (9).

8. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 1, characterized in that: The electromagnetic drive device (3) includes a moving iron core (301) and a sealing block (302).

9. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 1, characterized in that: The valve body (1) is also provided with an air inlet (105) and a pressure relief inlet (106).

10. A multi-discharge container valve for fire extinguishing agent cylinder groups according to claim 1, characterized in that: The valve cover (2) is equipped with a manual start device that communicates with the exhaust port (9).

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