Fire extinguisher capable of automatically switching on and off spraying

Abstract

The fire extinguisher structurally comprises a barrel and an extinguisher head valve, the extinguisher head valve is mounted at the top of the barrel, a fixing frame is arranged on the outer side of the barrel, a pressure gauge is arranged on the outer side of the extinguisher head valve, the front end of the extinguisher head valve is connected with a spray pipe, and a nozzle is mounted at the tail end of the spray pipe. According to the fire extinguishing device, when fire extinguishing is completed, the downward pressing handle is loosened, the rotation base is driven to rotate through the elasticity of the rewinding spring, the threaded column and the threaded matching pipe are matched to abut against the sealing valve body to move downwards, the sealing valve body blocks the through groove, and a fire extinguishing agent is prevented from being sprayed out; the fire extinguisher can be automatically turned off, and the fire extinguisher is convenient to use.

Description

Technical Field

[0001] The invention relates to the field of fire fighting equipment, in particular to an automatic switch spraying fire extinguisher. Background Art

[0002] A fire extinguisher is a portable or fixed fire-fighting equipment used to put out an initial fire. It quickly controls the fire by releasing fire extinguishing agents. Fire extinguishers are divided into fixed and portable types. Fixed fire extinguishers have sprinkler devices and gas fire extinguishing systems. Fixed fire extinguishers can spray fire extinguishing agents for a long time to extinguish fires, while portable fire extinguishers are easy to move. The fire extinguisher can be moved to the fire location for extinguishing. Fire extinguishers can be set up according to specific scene environments to more efficiently extinguish fires in specific environments.

[0003] Based on the above, the inventors have found that the existing ones mainly have the following shortcomings. For example, when using the existing dry powder fire extinguisher, the safety pin needs to be pulled out to unlock it, and the fire extinguishing agent can be sprayed out by pressing the pressure handle. In the case of a panic in the face of a fire, it is easy to use the fire extinguisher incorrectly, resulting in missing the best time to extinguish the fire. After a small fire is extinguished by a dry powder fire extinguisher, a large amount of fire extinguishing agent remains in the fire extinguisher and it is necessary to manually install the safety pin back into the pressure handle, making the use of the fire extinguisher inconvenient. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when facing a fire in a panic, it is easy to use the fire extinguisher incorrectly, resulting in missing the best time to extinguish the fire. After a small fire is extinguished by a dry powder fire extinguisher, a large amount of fire extinguishing agent remains in the fire extinguisher and it is necessary to manually install the safety pin back into the downward pressure handle, making the use of the fire extinguisher inconvenient. Therefore, a fire extinguisher with automatic switch spray is proposed.

[0005] In view of the above problems, the present invention provides a fire extinguisher with automatic switch spraying.

[0006] To achieve the above object, the present invention is implemented through the following technical solutions: An automatic switch - spraying fire extinguisher, the structure of which includes a cylinder body and a head valve body. The head valve body is installed at the top of the cylinder body, and a fixing frame is provided on the outer side of the cylinder body. A pressure gauge is provided on the outer side of the head valve body. The front end of the head valve body is connected to a spray pipe, and a nozzle is installed at the end of the spray pipe. A connecting groove is provided at the bottom end inside the head valve body, threads are provided on the inner side of the connecting groove, and a communicating pipe is fixedly installed at the exact middle position at the top of the connecting groove. An inner cavity is provided at the middle position inside the head valve body. A downward - pressing handle is provided on the right side of the head valve body, and the downward - pressing handle is movably matched with the top end of the inner cavity. An automatic rotation structure is provided at the top of the head valve body, and the bottom of the automatic rotation structure is movably matched with the downward - pressing handle. A through - slot is provided in the inner cavity, and the through - slot is in transitional connection with the downward - pressing handle. At the same time, one end of the through - slot away from the inner cavity is connected to a connecting head. A pressure - gauge connection port is provided on the inner side of the inner cavity, and the pressure - gauge connection port is connected to the pressure gauge. The fire - extinguishing agent flows into the inner cavity through the communicating pipe, and then the downward - pressing handle is lifted upward by rotating the rotation structure, so that the fire - extinguishing agent can flow into the spray pipe through the through - slot and then be sprayed out through the nozzle for fire extinguishing.

[0007] Further, the rotation structure is provided with a rotating seat, the bottom of the rotating seat is fixedly connected to a rotating clamping block, a threaded column is provided at the exact middle position at the bottom of the rotating clamping block, and the threaded column is in threaded cooperation with a threaded mating pipe. The two sides of the threaded mating pipe are fixedly arranged inside the head valve body. An anti - slip pad is provided at the side end of the rotating seat. There are more than eight anti - slip pads, and the anti - slip pads are arranged around the side end of the rotating seat. A return spring is installed at the end face of the threaded column, and the other end of the return spring is fixedly connected to the inside of the head valve body. By rotating the rotating seat, the threaded column is in threaded cooperation with the threaded mating pipe, so that the threaded column can push down the downward - pressing handle, and the sealing valve body in the downward - pressing handle is in transitional connection with the through - slot.

[0008] Further, ten friction pads are provided on the side end of the threaded column, and the friction pads are arranged equidistantly on the side end face of the threaded column. Two grooves are provided on the end face of the friction pad. By means of the friction pad with two grooves, the friction force between the threaded column and the inner wall of the head valve body can be increased, and the return spring drives the rotating seat to slowly rotate back.

[0009] Further, a cavity is provided inside the cylinder body, a siphon pipe is provided inside the cavity, the siphon pipe is in threaded connection with the bottom of the communicating pipe through a threaded joint, and a support seat is provided at the bottom of the cylinder body. The fire - extinguishing agent in the cavity can be siphoned out through the siphon pipe.

[0010] Further, the lower pressing handle is rotatably connected to the fixed pressing handle through a rotating shaft. The left side of the lower pressing handle is fixedly connected to the sealing valve body. The sealing valve body is in transitional fit with the through groove. The end face of the lower pressing handle is provided with anti-slip convex pieces, which are arranged on the end face of the lower pressing handle. The end face of the fixed pressing handle is provided with anti-slip convex pieces. The lower pressing handle and the fixed pressing handle are movably matched through a return spring. The anti-slip convex pieces can prevent slipping when holding the lower pressing handle and the fixed pressing handle.

[0011] Further, a support block is provided at the bottom of the sealing valve body. A rubber sealing pad is provided on the end face of the support block. The rubber sealing pad is in transitional fit with the through groove. A sliding groove is provided at the top of the sealing valve body. The sliding groove is in sliding fit with the bottom of the threaded column. By matching the sliding groove with the threaded column, the threaded column can stably press down the sealing valve body.

[0012] Further, the upper and lower end faces of the rubber sealing pad are provided with inclined planes at an angle of 30 degrees, which is convenient for the rubber sealing pad to be embedded into the cavity and connected with the through groove to achieve a sealing effect. Beneficial Effects

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when the rotating seat rotates forward, the threaded mating tube moves upward, and then the lower pressing handle is driven by the return spring to move downward, so that the sealing valve body on the left side of the lower pressing handle tilts upward, enabling the fire extinguishing agent in the cavity to flow through the siphon tube to the connecting tube and then to the inner cavity, and the fire extinguishing agent flows through the through groove to the spray tube and finally sprays out through the nozzle to extinguish the fire.

[0014] When the fire is extinguished in the present invention, the lower pressing handle is released, and the elastic force of the retracting spring drives the rotating seat to rotate back, so that the threaded column and the threaded mating tube cooperate to hold down the sealing valve body and move downward, blocking the through groove to prevent the fire extinguishing agent from spraying out, which can automatically close the fire extinguisher and is also convenient for the use of the fire extinguisher.

[0015] The present invention uses the threaded column to press down the sealing valve body, and the rubber sealing pad fits against the end face of the through groove to achieve a sealing effect, preventing the fire extinguishing agent from spraying out, enabling the fire extinguishing agent to be automatically closed, and being convenient for people who do not know how to use the fire extinguisher. Brief Description of the Drawings

[0016] Figure 1 It is a front view structural schematic diagram of a fire extinguisher with an automatic switch and spraying according to the present invention.

[0017] Figure 2 It is a front view sectional structural schematic diagram of the cylinder body of the present invention.

[0018] Figure 3 It is a front view sectional structural schematic diagram of the head valve body of the present invention.

[0019] Figure 4 This is the front elevation sectional structure schematic diagram of the rotary structure of the present invention.

[0020] Figure 5 This is the top view sectional structure schematic diagram of the rotating block of the present invention.

[0021] Figure 6 This is the front elevation sectional structure schematic diagram of the pressing handle of the present invention.

[0022] Figure 7 This is the front view structure schematic diagram of the sealing valve body of the present invention.

[0023] In the figure: cylinder body 1, head valve body 2, fixing frame 6, pressure gauge 3, spray pipe 4, nozzle 5, connecting groove 21, thread 22, communicating pipe 23, inner cavity 24, pressing handle 25, rotary structure 26, through groove 27, pressure gauge connection port 28, rotating seat 261, anti-slip pad 262, rotating block 263, threaded column 264, retracting spring 265, threaded mating pipe 266, friction pad 2631, groove 2632, threaded column 263, cavity 11, siphon tube 12, threaded joint 13, support seat 14, fixed pressing handle 251, rotating shaft 252, sealing valve body 253, anti-slip convex piece 254, return spring 255, support block 2531, rubber sealing pad 2532, sliding groove 2533. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0025] Embodiment 1: Please refer to Figures 1 - 5 , the specific embodiments of the present invention are as follows: Its structure includes a cylinder body 1 and a head valve body 2. The head valve body 2 is installed at the top of the cylinder body 1, and a fixing frame 6 is provided on the outside of the cylinder body 1. A pressure gauge 3 is provided on the outside of the head valve body 2. The front end of the head valve body 2 is connected to a spray pipe 4. A nozzle 5 is installed at the end of the spray pipe 4. A connecting groove 21 is provided at the inner bottom end of the head valve body 2, a thread 22 is provided on the inner side of the connecting groove 21, a communicating pipe 23 is fixedly installed at the middle position at the top of the connecting groove 21. An inner cavity 24 is provided at the middle position inside the head valve body 2. A lower pressing handle 25 is provided on the right side of the head valve body 2. The lower pressing handle 25 is movably matched with the top end of the inner cavity 24. An automatic rotation structure 26 is provided at the top of the head valve body 2. The bottom of the automatic rotation structure 26 is movably matched with the lower pressing handle 25. A through groove 27 is provided in the inner cavity 24. The through groove 27 is in transitional connection with the lower pressing handle 25. At the same time, one end of the through groove 27 far from the inner cavity 24 is connected to a connecting head 29. A pressure gauge connection port 28 is provided on the inner side of the inner cavity 24. The pressure gauge connection port 28 is connected to the pressure gauge 3. The fire extinguishing agent flows into the inner cavity 24 through the communicating pipe 23. Then, by rotating the rotation structure 26, the lower pressing handle 25 is lifted upwards, so that the fire extinguishing agent can flow into the spray pipe 4 through the through groove 27 and is then sprayed outwards by the nozzle 5 for fire extinguishing.

[0026] The rotation structure 26 is provided with a rotating seat 261. The bottom of the rotating seat 261 is fixedly connected to a rotating clamping block 263. A threaded column 264 is provided at the middle position at the bottom of the rotating clamping block 263. The threaded column 264 is in threaded cooperation with a threaded mating pipe 266. The two sides of the threaded mating pipe 266 are fixedly arranged on the inner side of the head valve body 2. An anti-slip pad 262 is provided at the side end of the rotating seat 261. There are more than eight anti-slip pads 262, and the anti-slip pads 262 are arranged around the side end of the rotating seat 261. A return spring 265 is installed at the end face of the threaded column 263. The other end of the return spring 265 is fixedly connected to the inside of the head valve body 2. By rotating the rotating seat 261 to drive the threaded column 264 to be in threaded cooperation with the threaded mating pipe 266, the threaded column 264 can push down the lower pressing handle 25, so that the sealing valve body 253 in the lower pressing handle 25 is in transitional connection with the through groove 27.

[0027] Ten friction pads 2631 are provided at the side end of the threaded column 263. The friction pads 2631 are equidistantly arranged on the side end face of the threaded column 263. Two grooves 2632 are provided at the end face of the friction pads 2631. The friction pads 2631 with two grooves 2632 can increase the friction force with the inner wall of the head valve body 2, and the return spring 265 drives the rotating seat 261 to slowly rotate back.

[0028] Inside the cylinder body 1, there is a cavity 11. Inside the cavity 11, there is a siphon tube 12. The siphon tube 12 is threadedly connected to the bottom of the communication tube 23 through a threaded joint 13. The bottom of the cylinder body 1 is provided with a support base 14. Through the siphon tube 12, the fire extinguishing agent in the cavity 11 can be siphoned outwards.

[0029] Based on the above embodiment, the specific working principle is as follows: When extinguishing a fire, the rotating seat 261 can be rotated forward to drive the threaded column 264 to be threadedly engaged with the threaded mating tube 266, so that the threaded mating tube 266 moves upward, and the pressing handle 25 can be tightened towards the fixed pressing handle 251 through the return spring 255, causing the sealing valve body 253 on the left side of the pressing handle 25 to tilt upward, enabling the fire extinguishing agent in the cavity 11 to flow through the siphon tube 12 to the communication tube 23 and then to the inner cavity 24. The open through slot 27 can spray the fire extinguishing agent through the spray pipe 4 to the nozzle 5 for extinguishing the fire. When the fire extinguisher sprays the fire extinguishing agent to extinguish the fire, the pressing handle 25 can be pressed down to keep the sealing valve body 253 staggered from the through slot 27, allowing the fire extinguishing agent to be continuously sprayed out for extinguishing the fire. When the fire extinguishing is completed, the pressing handle 25 can be released, and the elastic force of the retracting spring 265 drives the rotating seat 261 to rotate back, so that the threaded column 264 and the threaded mating tube 266 cooperate to push the sealing valve body 253 downward, causing the sealing valve body 253 to block the through slot 27 to prevent the fire extinguishing agent from spraying outwards, which can automatically close the fire extinguisher and is also convenient for using the fire extinguisher.

[0030] Embodiment Two: Please refer to Figures 6 - 7 , the specific embodiment of the present invention is as follows: The pressing handle 25 is rotatably connected to the fixed pressing handle 251 through a rotating shaft 252. The left side of the pressing handle 25 is fixedly connected to the sealing valve body 253. The sealing valve body 253 is in transitional fit with the through slot 27. The end face of the pressing handle 25 is provided with anti-slip convex pieces 254. The anti-slip convex pieces 254 are arranged on the end face of the pressing handle 25. The end face of the fixed pressing handle 251 is provided with anti-slip convex pieces 254. The pressing handle 25 and the fixed pressing handle 251 are movably matched through a return spring 255. The anti-slip convex pieces 254 can prevent slipping when holding the pressing handle 25 and the fixed pressing handle 251.

[0031] The bottom of the sealing valve body 253 is provided with a support block 2531. The end face of the support block 2531 is provided with a rubber sealing pad 2532. The rubber sealing pad 2532 is in transitional fit with the through slot 27. The top of the sealing valve body 253 is provided with a sliding groove 2533. The sliding groove 2533 is in sliding fit with the bottom of the threaded column 264. Through the cooperation of the sliding groove 2533 and the threaded column 264, the threaded column 264 can stably press down the sealing valve body 253.

[0032] The upper and lower end surfaces of the rubber sealing gasket 2532 are both provided with inclined surfaces inclined at 30 degrees, so that the rubber sealing gasket 2532 can be easily embedded in the cavity 11 and connected to the through groove 27 to achieve a sealing effect.

[0033] Based on the above embodiment, the specific working principle is as follows: by setting the anti-slip convex piece 254 on the end surface of the pressing handle 25 and the fixed pressing handle 251, the pressing handle 25 and the fixed pressing handle 251 can be stably held to extinguish the fire. At the same time, after the rotating seat 261 rotates forward, the return spring 255 can drive the pressing handle 25 to move downward through its own elasticity, so that the sealing valve body 253 can be tilted upward, so that the position of the sealing valve body 253 and the through groove 27 are staggered, so that the fire extinguishing agent can be sprayed out through the through groove 27, and the sliding groove 2533 set on the top of the sealing valve body 253 can allow the bottom of the threaded column 264 to slide stably on the top of the sealing valve body 253, so that the threaded column 264 presses down the sealing valve body 253 to fit the end surface of the through groove 27 through the rubber sealing pad 2532 to achieve a sealing effect, thereby preventing the fire extinguishing agent from spraying out and allowing the fire extinguishing agent to be automatically closed, which is convenient for people who do not know how to use a fire extinguisher.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, so it is intended that all changes falling within the meaning and range of equivalent elements of the claims are included in the present invention. Any reference sign in the claims should not be regarded as limiting the claims involved.

Claims

1. A fire extinguisher with automatic switch spraying, comprising a cylinder (1) and a valve body (2), characterized in that: A valve body (2) is installed on the top of the cylinder (1), and a fixing frame (6) is provided on the outside of the cylinder (1). A pressure gauge (3) is provided on the outside of the valve body (2). The front end of the valve body (2) is connected to the nozzle (4), and a nozzle (5) is installed at the end of the nozzle (4). A connecting groove (21) is provided at the bottom end of the valve body (2). A thread (22) is provided on the inside of the connecting groove (21). A connecting pipe (23) is fixedly installed at the middle position of the top of the connecting groove (21). An inner chamber (24) is provided at the middle position of the valve body (2). A downward pressing handle (25) is provided on the right side of the valve body (2). The downward pressing handle (25) is movably connected to the top of the inner chamber (24). The top of the valve body (2) is provided with an automatic rotating structure (26), and the bottom of the automatic rotating structure (26) is movably matched with the downward pressing handle (25). The inner chamber (24) is provided with a through groove (27), and the through groove (27) is transitionally connected with the downward pressing handle (25). At the same time, the end of the through groove (27) away from the inner chamber (24) is connected to the connector (29). The inner side of the inner chamber (24) is provided with a pressure gauge connection port (28), and the pressure gauge connection port (28) is connected to the pressure gauge (3). The fire extinguishing agent flows into the inner chamber (24) through the connecting pipe (23), and then the downward pressing handle (25) is lifted up by rotating the rotating structure (26), so that the fire extinguishing agent can flow into the nozzle (4) through the through groove (27).

2. The fire extinguisher with automatic switch spraying according to claim 1, characterized in that: The rotary structure (26) is provided with a rotating seat (261), the bottom of the rotating seat (261) is fixedly connected to the rotating block (263), a threaded column (264) is provided in the middle of the bottom of the rotating block (263), the threaded column (264) is threadedly matched with a threaded matching tube (266), both sides of the threaded matching tube (266) are fixedly arranged on the inner side of the valve body (2) of the device head, and an anti-skid pad (262) is provided at the side end of the rotating seat (261), and at least eight anti-skid pads (262) are provided, and The anti-skid pad (262) is arranged around the side end of the rotating seat (261), and a rewinding spring (265) is installed on the end surface of the threaded column (263). The other end of the rewinding spring (265) is fixedly connected to the inside of the valve body (2) of the device head. By rotating the rotating seat (261), the threaded column (264) and the threaded matching tube (266) are threadedly matched, so that the threaded column (264) can push down the pressing handle (25), so that the sealing valve body (253) in the pressing handle (25) is transitionally connected with the through groove (27).

3. The fire extinguisher with automatic switch spraying according to claim 2, characterized in that: Ten friction pads (2631) are provided at the side end of the threaded column (263). The friction pads (2631) are equidistantly arranged on the side end surface of the threaded column (263). Two grooves (2632) are provided on the end surface of the friction pad (2631). The friction pad (2631) provided with the two grooves (2632) can increase the friction force between the friction pad and the inner wall of the valve body (2) of the device head, so that the rewinding spring (265) drives the rotating seat (261) to rotate slowly.

4. The fire extinguisher with automatic switch spraying according to claim 1, characterized in that: A chamber (11) is provided inside the cylinder (1), a siphon tube (12) is provided inside the chamber (11), the siphon tube (12) is threadedly connected to the bottom of the connecting pipe (23) via a threaded joint (13), a support seat (14) is provided at the bottom of the cylinder (1), and the fire extinguishing agent in the chamber (11) can be siphoned out through the siphon tube (12).

5. The fire extinguisher with automatic switch spraying according to claim 1, characterized in that: The pressing handle (25) is rotatably connected to the fixed pressing handle (251) via a rotating shaft (252); the left side of the pressing handle (25) is fixedly connected to the sealing valve body (253); the sealing valve body (253) is transitionally matched with the through groove (27); the end surface of the pressing handle (25) is provided with an anti-skid protrusion (254); the anti-skid protrusion (254) is arranged on the end surface of the pressing handle (25); the end surface of the fixed pressing handle (251) is provided with an anti-skid protrusion (254); the pressing handle (25) and the fixed pressing handle (251) are movably matched via a return spring (255).

6. The fire extinguisher with automatic switch spraying according to claim 5, characterized in that: A support block (2531) is provided at the bottom of the sealing valve body (253), and a rubber sealing pad (2532) is provided on the end surface of the support block (2531). The rubber sealing pad (2532) is transitionally matched with the through groove (27). A sliding groove (2533) is provided at the top of the sealing valve body (253). The sliding groove (2533) is slidingly matched with the bottom of the threaded column (264). Through the cooperation between the sliding groove (2533) and the threaded column (264), the threaded column (264) can stably press down the sealing valve body (253).

7. The fire extinguisher with automatic switch spraying according to claim 6, characterized in that: The upper and lower end surfaces of the rubber sealing pad (2532) are both provided with inclined surfaces inclined at 30 degrees.

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