Trolley type carbon dioxide fire extinguishing agent bottle head valve

Abstract

The utility model provides a cart type carbon dioxide fire extinguishing agent bottle head valve, and belongs to the technical field of valves. The problem that in the prior art, a diaphragm is prone to being damaged is solved. A liquid inlet is formed in the bottom of the valve body, an air outlet is formed in the side edge of the valve body, a liquid inlet channel and an air outlet channel are formed in the valve body and communicated with the liquid inlet and the air outlet respectively, a piston is fixedly arranged in the valve body, and the bottom of the piston is communicated with the liquid inlet channel. A piston sealing gasket is fixed at the joint of the piston and the liquid inlet channel in a sealing mode, one side of the piston is communicated with the air outlet channel, a safety air channel is formed in one side of the valve body and communicated with the liquid inlet channel, a plug is connected to the valve body on the outer side of the safety air channel in a sealing mode, and a safety film is fixed at the joint of the plug and the valve body in a sealing mode. A first sealing gasket is fixed outside the safety film in a sealing mode, and a second sealing gasket is fixed inside the safety film in a sealing mode. The utility model has the advantages of good safety performance and strong sealing performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a cart-type carbon dioxide fire extinguishing agent bottle head valve. Background Art

[0002] The cylinder head valve is the valve component of the carbon dioxide fire extinguisher. Its working principle is to control the filling and discharge of the fire extinguishing agent by opening and closing the valve core.

[0003] A Chinese patent with announcement number CN202761948U discloses a fire extinguisher bottle head valve, including a hollow first puncture needle, and an upper valve cover, an upper valve body and a lower valve body stacked in sequence; a through hole is provided in the center of the upper valve cover, the upper valve body and the lower valve body, and the first puncture needle is accommodated in the through hole; an annular piston is mounted on the outer wall of the middle part of the first puncture needle, and the upper valve cover, the inner wall of the upper valve body, the outer wall of the first puncture needle and the upper part of the piston form a closed chamber, and a medicine explosion box is provided in the closed chamber, and an annular shock-proof pad is provided between the upper valve body and the lower valve body, and the shock-proof pad has a conical hole; a conical surface is provided on the outer wall of the lower part of the first puncture needle; the conical surface cooperates with the hole wall of the conical hole; a main diaphragm is provided below the tip of the first puncture needle.

[0004] The patent provides a fire extinguisher bottle head valve that uses a secondary diaphragm structure. The secondary diaphragm is easily damaged during use, which may cause the valve to fail to open or close properly, become stuck, and affect the normal use of the valve. Utility Model Content

[0005] The utility model aims to provide a trolley-type carbon dioxide fire extinguishing agent bottle head valve in view of the above-mentioned problems existing in the prior art.

[0006] The objectives of the utility model can be achieved through the following technical solutions: a trolley-type carbon dioxide fire extinguishing agent bottle head valve, comprising a valve body, a liquid inlet is provided at the bottom of the valve body and an air outlet is provided at the side of the valve body, a liquid inlet channel and an air outlet channel are provided inside the valve body, the liquid inlet channel and the air outlet channel are respectively connected with the liquid inlet and the air outlet, a piston is fixedly arranged inside the valve body, the bottom of the piston is connected with the liquid inlet channel, a piston sealing gasket is sealed and fixed at the connection between the piston and the liquid inlet channel, one side of the piston is connected with the air outlet channel, a safety airway is provided on one side of the valve body, the safety airway is connected with the liquid inlet channel, a plug is sealed and connected to the valve body outside the safety airway, a safety film is sealed and fixed at the connection between the plug and the valve body, a first sealing gasket is sealed and fixed on the outside of the safety film, and a second sealing gasket is sealed and fixed on the inside of the safety film.

[0007] In the above-mentioned cart-type carbon dioxide fire extinguishing agent bottle head valve, a valve cover is fixedly installed on the upper end of the valve body, and a first O-ring is fixedly provided at the connection between the valve cover and the valve body.

[0008] In the above-mentioned cart-type carbon dioxide fire extinguishing agent bottle head valve, a valve stem is fixed to the upper end of the piston, the valve stem extends out of the valve body and the upper end of the valve cover, and a hand wheel is fixedly connected to the top end of the valve stem.

[0009] In the above-mentioned cart-type carbon dioxide fire extinguishing agent bottle head valve, a safety pin is fixedly connected to the valve body, a chain is connected to the valve body, and the chain is connected to the upper end of the safety pin.

[0010] In the above-mentioned cart-type carbon dioxide fire extinguishing agent bottle head valve, a second O-ring is provided at the connection between the valve stem and the valve cover, and a sealing gasket is fixedly provided above the second O-ring.

[0011] Compared with the prior art, the utility model provides a trolley-type carbon dioxide fire extinguishing agent bottle head valve with the following beneficial effects: 1. By arranging a safety film at the connection between the plug and the valve body, and arranging a first sealing gasket and a second sealing gasket on the inner and outer sides of the safety film respectively, the sealing performance of the plug is effectively improved, so that one end of the safety airway is sealed; 2. By arranging a first O-ring at the connection between the valve cover and the valve body, arranging a second O-ring at the connection between the valve stem and the valve cover, and arranging a sealing gasket above the second O-ring, the sealing performance between the valve body, the valve stem and the valve cover is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 2 yes Figure 1 Enlarged schematic diagram at point A in the middle.

[0014] In the figure: 1. valve body; 11. liquid inlet; 12. air outlet; 13. liquid inlet channel; 14. air outlet channel; 15. safety airway; 2. piston; 21. piston sealing gasket; 3. plug; 4. safety film; 41. first sealing gasket; 42. second sealing gasket; 5. valve cover; 51. first O-ring; 6. valve stem; 61. second O-ring; 62. sealing gasket; 7. handwheel; 8. safety pin; 9. chain. DETAILED DESCRIPTION

[0015] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0016] like Figure 1 to Figure 2As shown, this embodiment includes a valve body 1, a vertical liquid inlet 11 is provided at the bottom of the valve body 1, a vertical liquid inlet channel 13 is provided inside the valve body 1, the liquid inlet channel 13 is connected to the liquid inlet 11, a transverse air outlet 12 is provided on the side of the valve body 1, a transverse air outlet channel 14 is provided inside the valve body 1, the air outlet channel 14 is connected to the air outlet 12, a piston 2 is fixedly arranged inside the valve body 1 above the liquid inlet channel 13 and the air outlet channel 14, the bottom of the piston 2 is connected to the liquid inlet channel 13, a piston 2 sealing gasket is sealed and fixed at the connection between the piston 2 and the liquid inlet channel 13, and one side of the piston 2 is connected to the air outlet channel 14 The piston 2 controls the medium to enter the valve body 1 and controls the medium to be discharged from the valve body 1. A safety airway 15 is provided on the side of the valve body 1 opposite to the air outlet 12. The safety airway 15 is communicated with the side of the liquid inlet channel 13. The plug 3 is sealed and connected to the valve body 1 outside the safety airway 15. A safety membrane 4 is sealed and fixed at the connection between the plug 3 and the valve body 1. A first sealing gasket 41 is sealed and fixed on the outside of the safety membrane 4. A second sealing gasket 42 is sealed and fixed on the inside of the safety membrane 4. The safety membrane 4, the first sealing gasket 41 and the second sealing gasket 42 cooperate with the plug 3 to safely release the pressure and can improve the sealing performance of this embodiment.

[0017] like Figure 1 to Figure 2 As shown, a valve cover 5 is fixedly installed on the upper end of the valve body 1, and a first O-ring 51 is fixedly provided at the connection between the valve cover 5 and the valve body 1. A valve stem 6 is fixed to the upper end of the piston 2, and the valve stem 6 extends out of the valve body 1 and the upper ends of the valve cover 5. A second O-ring 61 is provided at the connection between the valve stem 6 and the valve cover 5, and a sealing gasket 62 is fixedly provided above the second O-ring 61. The first O-ring 51 and the second O-ring 61 ensure the sealing between the valve body 1, the valve stem 6 and the valve cover 5.

[0018] To elaborate further, Figure 1 to Figure 2 As shown, a hand wheel 7 is fixedly connected to the top of the valve stem 6. The hand wheel 7 cooperates with the valve stem 6. By rotating the hand wheel 7, the opening and closing state of this embodiment can be controlled.

[0019] To elaborate further, Figure 1 to Figure 2 As shown, a safety pin 8 is fixedly connected to the valve body 1, and a chain 9 is connected to the valve body 1. The chain 9 is connected to the upper end of the safety pin 8. By pulling the safety pin 8, this embodiment can be used.

[0020] The working principle of the utility model is as follows: the lower end of the valve body 1 is connected to the carbon dioxide fire extinguishing agent bottle, the medium enters the valve body 1 from the liquid inlet 11 and the liquid inlet channel 13 and is pressurized, the liquid carbon dioxide fire extinguishing agent becomes gas, the piston 2 is opened, and the pressurized carbon dioxide fire extinguishing agent in gas form is ejected through the gas outlet channel 14 and the gas outlet 12, the safety channel is connected to the liquid inlet channel 13, a part of the carbon dioxide fire extinguishing agent enters the safety channel from the liquid inlet channel 13 for safe discharge.

[0021] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0022] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A cart-type carbon dioxide fire extinguishing agent bottle head valve, comprising a valve body (1), characterized in that: The bottom of the valve body (1) is provided with a liquid inlet (11) and the side of the valve body (1) is provided with an air outlet (12); the interior of the valve body (1) is provided with a liquid inlet channel (13) and an air outlet channel (14); the liquid inlet channel (13) and the air outlet channel (14) are respectively connected to the liquid inlet (11) and the air outlet (12); a piston (2) is fixedly arranged inside the valve body (1); the bottom of the piston (2) is connected to the liquid inlet channel (13); the piston (2) is sealed and fixed at the connection between the piston (2) and the liquid inlet channel (13) A sealing gasket, one side of the piston (2) is connected to the air outlet channel (14), one side of the valve body (1) is provided with a safety airway (15), the safety airway (15) is connected to the liquid inlet channel (13), a plug (3) is sealed and connected to the valve body (1) outside the safety airway (15), a safety film (4) is sealed and fixed at the connection between the plug (3) and the valve body (1), a first sealing gasket (41) is sealed and fixed to the outside of the safety film (4), and a second sealing gasket (42) is sealed and fixed to the inside of the safety film (4).

2. A cart-type carbon dioxide fire extinguishing agent bottle head valve according to claim 1, characterized in that: A valve cover (5) is fixedly mounted on the upper end of the valve body (1), and a first O-ring (51) is fixedly arranged at the connection between the valve cover (5) and the valve body (1).

3. A cart-type carbon dioxide fire extinguishing agent bottle head valve according to claim 2, characterized in that: A valve stem (6) is fixed to the upper end of the piston (2), the valve stem (6) extends out of the valve body (1) and the upper end of the valve cover (5), and a hand wheel (7) is fixedly connected to the top end of the valve stem (6).

4. The trolley-type carbon dioxide fire extinguishing agent bottle head valve according to claim 1 is characterized in that: A safety pin (8) is fixedly connected to the valve body (1), a chain (9) is connected to the valve body (1), and the chain (9) is connected to the upper end of the safety pin (8).

5. The trolley-type carbon dioxide fire extinguishing agent bottle head valve according to claim 3 is characterized in that: A second O-ring (61) is provided at the connection between the valve stem (6) and the valve cover (5), and a sealing gasket (62) is fixedly provided above the second O-ring (61).

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