CN113483111A

CN113483111A - Fire extinguisher valve structure

Info

Publication number: CN113483111A
Application number: CN202110950746.9A
Authority: CN
Inventors: 田超
Original assignee: Shaoxing Jiayuan Fire Fighting Equipment Co ltd
Current assignee: Shaoxing Jiayuan Fire Fighting Equipment Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-10-08
Anticipated expiration: 2041-08-18
Also published as: CN113483111B

Abstract

The invention discloses a fire extinguisher valve structure, which comprises a valve seat, a valve core, a spring, a fixed arm and a rotating arm, wherein an injection channel is arranged on the valve seat, the spring pushes the valve core to block the injection channel and divide the injection channel into a low-pressure channel communicated with an injection port and a high-pressure channel communicated with a steel cylinder, a piston sleeve with an opening at the bottom is arranged on the valve seat, a piston is movably arranged in the piston sleeve and connected with a connecting rod, the connecting rod penetrates out of the top of the piston sleeve and penetrates through a waist hole in the rotating arm, limiting blocks are arranged on the connecting rod positioned at two sides of the rotating arm, a cavity enclosed by the piston to the top of the piston sleeve is connected with a first channel communicated with the high-pressure channel and a second channel communicated with the external atmosphere, and a first valve core part and a second valve core part are respectively arranged on the first channel and the second channel. The valve structure of the fire extinguisher can be used for handheld injection and automatic injection, large grip strength is not needed during automatic injection, physical strength can be saved, and old people and children with small grip strength can easily inject.

Description

Fire extinguisher valve structure

Technical Field

The invention belongs to the technical field of fire extinguisher valves, and particularly relates to a fire extinguisher valve structure, in particular to a labor-saving fire extinguisher valve structure.

Background

The fire extinguisher is a portable fire extinguishing tool, chemical articles are placed in the fire extinguisher for extinguishing fire, the fire extinguisher is one of common fire-proof facilities, the fire extinguisher is stored in public places or places where fire may happen, the components filled in different kinds of fire extinguishers are different and are specially designed for different fires, and the fire extinguisher is required to be paid attention to avoid adverse effects and causing danger when in use.

The existing fire extinguisher valve needs larger grip strength when in use, so that the old and the children have certain obstruction when using the fire extinguisher, and even if the fire extinguisher valve can be normally used, the long-time pressing use can also cause the body fatigue of the user.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the fire extinguisher valve structure which can be used for handheld injection and automatic injection, does not need large holding power during automatic injection, can save physical strength, and can be used for old people and children with small holding power to easily inject.

In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a fire extinguisher valve structure, includes disk seat, case, spring, fixed arm and rotor arm, be provided with injection passage on the disk seat, the activity is provided with on the disk seat and penetrates injection passage's case, the spring promotes case shutoff injection passage will injection passage separates into the low pressure passageway with the jet intercommunication and the high pressure channel who communicates with the steel bottle, the case top is located the rotor arm below, the rotor arm rotate set up in on the disk seat, the fixed arm with disk seat fixed connection, be provided with bottom open-ended piston bush on the disk seat, the activity is provided with the piston in the piston bush, the piston is connected with the connecting rod, the connecting rod is followed piston bush top is worn out and is passed waist hole on the rotor arm is located the rotor arm both sides be provided with the stopper on the connecting rod, the piston extremely the cavity that the piston bush top encloses is connected with the first passageway that communicates with high pressure channel and with the high pressure channel intercommunication And the first channel and the second channel are respectively provided with a first valve core part and a second valve core part for controlling on-off. When the fire extinguisher valve structure is installed on a steel cylinder, a cavity defined by a piston and the top of a piston sleeve can be communicated with the steel cylinder through a first channel, and a cavity defined by the piston and the top of the piston sleeve can be communicated with the external atmosphere through a second channel; after the fire extinguishing device is used, the first channel is controlled to be disconnected by the first valve core part, and then the second channel is controlled to be communicated by the second valve core part, so that high-pressure fire extinguishing materials in a cavity surrounded by the piston and the top of the piston sleeve can be discharged, the valve core and the rotating arm are pushed to reset under the action of the spring, and then the spraying can be automatically stopped; after the cylinder is used for a period of time, the pressure of the fire extinguishing material in the cylinder may not be enough to push the piston to move downwards to compress the spring to realize automatic spraying, and at the moment, the rotating arm can be manually rotated to start spraying in a state that the first channel is disconnected and the second channel is communicated. The valve structure of the fire extinguisher can be used for handheld injection and automatic injection, large grip strength is not needed during automatic injection, physical strength can be saved, and old people and children with small grip strength can easily inject.

In the above technical solution, preferably, the first valve core portion and the second valve core portion are rotatably disposed in the valve seat, the first valve core portion and the second valve core portion are both axially provided with a valve passage, and the first valve core portion and the second valve core portion rotate to enable the valve passage to communicate with or disconnect from passages on two sides. With this structure, the passages on both sides can be communicated or disconnected by the rotation of the first valve core portion and the second valve core portion.

In the above technical solution, preferably, a cylindrical valve chamber communicating the first channel and the second channel is provided on the valve seat, a cylindrical valve core is rotatably provided in the cylindrical valve chamber, the cylindrical valve core is provided with the first valve core portion and the second valve core portion, and at most one of the first channel and the second channel is communicated when the cylindrical valve core is at any angle. By adopting the structure, the operation is more convenient, the first valve core part and the second valve core part can be operated simultaneously only by rotating the cylindrical valve core, and the misoperation that the first channel and the second channel are communicated can not occur.

In the above technical solution, preferably, a rotating handle is arranged at one end of the columnar valve core extending out of the valve seat. By adopting the structure, the columnar valve core can be conveniently rotated through the rotating handle.

In the above technical solution, preferably, the cylindrical valve core is provided with a plurality of first sealing rings. The structure is adopted to improve the sealing performance of the columnar valve core.

In the above technical solution, preferably, a second sealing ring is disposed between the connecting rod and a hole wall of the top of the piston sleeve through which the connecting rod passes. The structure is adopted to improve the sealing performance between the connecting rod and the hole wall through which the connecting rod passes.

In the above technical solution, preferably, a check valve is disposed in the first passage and can flow only in one direction toward the piston sleeve. Because the pressure of fire extinguisher in the injection in-process steel bottle can diminish gradually, if not set up the check valve, pressure in the steel bottle diminishes gradually and can make the pulling force of piston be insufficient compression spring gradually when automatic injection, the automatic injection will be ended to the fire extinguishing material in the steel bottle not yet spouted, and through having set up the check valve, after starting automatic injection, the pressure in the cavity that piston to piston bush top encloses just can not change again, can directly spout the fire extinguishing material.

In the above technical solution, preferably, a limit ring is disposed in the piston sleeve, and the limit ring limits the piston to be located below the openings of the first channel and the second channel. By adopting the structure, the piston is always positioned below the openings of the first channel and the second channel, so that the fire extinguishing materials are prevented from being directly sprayed away from the opening at the bottom of the piston sleeve to influence normal use.

In the above technical scheme, preferably, a detachable plug is arranged on the opening at the bottom of the piston sleeve. General fire extinguisher all is equipped with the safety pin, the safety pin is generally inserted and is used for restricting the rotor arm rotation between fixed arm and rotor arm, but the safety pin is taken out or is dropped because of gravity in handling easily by mistake, the safety pin mistake drops and produces the mistake easily and spout when producing and transporting the fire extinguisher, and adopt above-mentioned structure, plug up the opening of piston sleeve bottom through the end cap, can no longer use traditional safety pin, can plug up the opening of piston sleeve bottom by the end cap, when the opening of piston sleeve bottom is plugged up, even the mistake is held the rotor arm and also can not make the relative fixed arm rotation of rotor arm, be used for playing the guard action, difficult production mistake is spouted in production and handling.

In the above technical scheme, preferably, the plug is in threaded connection with the opening at the bottom of the piston sleeve. By adopting the structure, the plug is more firmly fixed and is convenient to disassemble and assemble.

Compared with the prior art, the invention has the following beneficial effects: when the fire extinguisher valve structure is installed on a steel cylinder, a cavity defined by a piston and the top of a piston sleeve can be communicated with the steel cylinder through a first channel, and a cavity defined by the piston and the top of the piston sleeve can be communicated with the external atmosphere through a second channel; after the fire extinguishing device is used, the first channel is controlled to be disconnected by the first valve core part, and then the second channel is controlled to be communicated by the second valve core part, so that high-pressure fire extinguishing materials in a cavity surrounded by the piston and the top of the piston sleeve can be discharged, the valve core and the rotating arm are pushed to reset under the action of the spring, and then the spraying can be automatically stopped; after the cylinder is used for a period of time, the pressure of the fire extinguishing material in the cylinder may not be enough to push the piston to move downwards to compress the spring to realize automatic spraying, and at the moment, the rotating arm can be manually rotated to start spraying in a state that the first channel is disconnected and the second channel is communicated. The valve structure of the fire extinguisher can be used for handheld injection and automatic injection, large grip strength is not needed during automatic injection, physical strength can be saved, and old people and children with small grip strength can easily inject.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic sectional view taken along the line a-a in fig. 1.

Fig. 3 is a schematic sectional structure diagram of the automatic injection according to the embodiment of the present invention.

Fig. 4 is a schematic sectional view along the direction B-B in fig. 3.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 4, a fire extinguisher valve structure comprises a valve seat 1, a valve core 2, a spring 3, a fixed arm 4 and a rotating arm 5, wherein an injection channel 11 is arranged on the valve seat 1, the valve core 2 penetrating the injection channel 11 is movably arranged on the valve seat 1, the spring 3 pushes the valve core 2 to block the injection channel 11 and divide the injection channel 11 into a low-pressure channel 111 communicated with an injection port and a high-pressure channel 112 communicated with a steel cylinder, the top of the valve core 2 is positioned below the rotating arm 5, the rotating arm 5 is rotatably arranged on the valve seat 1, the fixed arm 4 is fixedly connected with the valve seat 1, a piston sleeve 12 with an opening at the bottom is arranged on the valve seat 1, a piston 13 is movably arranged in the piston sleeve 12, the piston 13 is connected with a connecting rod 14, the connecting rod 14 penetrates out of the top of the piston sleeve 12 and penetrates through a waist hole 51 on the rotating arm 5, limiting blocks 141 are arranged on the connecting rod 14 positioned at two sides of the rotating arm 5, and a cavity enclosed by the piston 13 to the top of the piston sleeve 12 is connected with a first channel 15 and a high-pressure channel 112 The second channel 16 communicated with the outside atmosphere, the first channel 15 and the second channel 16 are respectively provided with a first valve core part 61 and a second valve core part 62 for controlling the on-off. When the fire extinguisher valve structure is installed on a steel cylinder, a cavity defined by the piston 13 to the top of the piston sleeve 12 can be communicated with the steel cylinder through a first channel 15, a cavity defined by the piston 13 to the top of the piston sleeve 12 can be communicated with the external atmosphere through a second channel 16, when the fire extinguisher valve structure is used, the second channel 16 is controlled to be disconnected through the second valve core part 62, and the first channel 15 is controlled to be communicated through the first valve core part 61, so that the piston 13 can move downwards by means of the pressure of fire extinguishing materials in the steel cylinder, the connecting rod 14 on the piston 13 pulls the rotating arm 5 to descend, and the valve core 2 is pressed downwards, so that the fire extinguisher can be automatically sprayed; after the use is finished, the first channel 15 is controlled to be disconnected by the first valve core part 61, and then the second channel 16 is controlled to be communicated by the second valve core part 62, so that high-pressure fire extinguishing materials in a cavity surrounded by the piston 13 and the top of the piston sleeve 12 can be discharged, the valve core 2 and the rotating arm 5 are pushed to reset under the action of the spring 3, and the spraying can be automatically stopped; after a period of use, the pressure of the fire extinguishing material in the cylinder may not be enough to push the piston 13 downward to compress the spring 3 for automatic spraying, and in the state that the first passage 15 is disconnected and the second passage 16 is connected, the rotating arm 5 can be rotated by hand to start spraying. The valve structure of the fire extinguisher can be used for handheld injection and automatic injection, large grip strength is not needed during automatic injection, physical strength can be saved, and old people and children with small grip strength can easily inject.

In this embodiment, the first spool portion 61 and the second spool portion 62 are rotatably disposed in the valve seat 1, the valve passages 63 are axially disposed on both the first spool portion 61 and the second spool portion 62, and the first spool portion 61 and the second spool portion 62 are rotated to connect or disconnect the passages on both sides of the valve passages 63. With this structure, the first valve core portion 61 and the second valve core portion 62 can rotate to connect or disconnect the channels on the two sides, and of course, in other embodiments, valve core portions with other structures may be adopted, as long as on-off control of the first channel 15 and the second channel 16 can be achieved, and the first valve core portion 61 and the second valve core portion 62 may be an integral valve core or may be two separate valve cores.

In the present embodiment, a cylindrical valve chamber 17 communicating the first channel 15 and the second channel 16 is provided on the valve seat 1, a cylindrical valve core 6 is rotatably provided in the cylindrical valve chamber 17, a first valve core part 61 and a second valve core part 62 are provided on the cylindrical valve core 6, at most one of the first channel 15 and the second channel 16 is communicated at any angle of the cylindrical valve core 6, at most one of the first channel 15 and the second channel 16 is communicated at any angle by controlling the aperture of the valve channel 63, and in the present embodiment, the two valve channels 63 on the first valve core part 61 and the second valve core part 62 are perpendicular to each other. With this structure, the operation is made more convenient, the first spool portion 61 and the second spool portion 62 can be operated simultaneously as long as the cylindrical spool 6 is rotated, and there is no malfunction in which both the first passage 15 and the second passage 16 are communicated.

In this embodiment, a rotating handle 64 is arranged at one end of the columnar valve core 6 extending out of the valve seat 1. By adopting the structure, the columnar valve core 6 can be conveniently rotated, and identification characters or marks for automatically spraying opening and closing positions are required to be made on the rotating handle 64 and the valve seat 1 around the rotating handle 64.

In order to improve the sealing performance, the cylindrical valve core 6 is provided with a plurality of first sealing rings 65, and in this embodiment, the cylindrical valve core 6 is provided with three first sealing rings 65.

In order to improve the sealing performance, in this embodiment, two second sealing rings 142 are provided between the connecting rod 14 and the hole wall of the top of the piston sleeve 12 through which the connecting rod passes.

In this embodiment, a one-way valve 7 is arranged in the first channel 15, which allows only one-way flow into the piston sleeve 12. Because the pressure of fire extinguisher in the injection in-process steel bottle can diminish gradually, if not set up check valve 7, pressure in the steel bottle diminishes gradually and can make the pulling force of piston 13 be insufficient for compression spring 3 gradually when automatic injection, automatic injection will be ended to the fire extinguishing material in the steel bottle not yet spouting, and through having set up check valve 7, after starting automatic injection, the pressure in the cavity that piston 13 to piston bush 12 top enclose just can not change again, can directly spout the fire extinguishing material.

In this embodiment, a stop ring 18 is provided in the piston sleeve 12, and the stop ring 18 stops the piston 13 below the openings of the first passage 15 and the second passage 16. With this construction, the piston 13 is always located below the openings of the first passage 15 and said second passage 16, thereby preventing the extinguishing material from being directly sprayed from the opening at the bottom of the piston housing 12 and affecting normal use.

In this embodiment, the opening at the bottom of the piston sleeve 12 is provided with a detachable plug 8. General fire extinguisher all is equipped with the safety pin, the safety pin is generally inserted and is used for restricting the rotation of rotor arm 5 between fixed arm 4 and rotor arm 5, but the safety pin is taken out or drops because of gravity in handling easily by mistake, the safety pin mistake drops and produces the mistake easily and spout when producing and transporting the fire extinguisher, and in this embodiment, block up the opening of piston sleeve 12 bottom through end cap 8, can no longer use traditional safety pin, can block up the opening of piston sleeve 12 bottom by end cap 8, when the opening of piston sleeve 12 bottom was blocked, even the mistake is held rotor arm 5 and also can not make rotor arm 5 rotate relative to fixed arm 4, be used for playing the guard action, be difficult for producing the mistake and spout in production and handling.

In this embodiment, the plug 8 is threadedly connected to the opening at the bottom of the piston sleeve 12. By adopting the structure, the plug 8 is more firmly fixed and is convenient to disassemble and assemble.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a fire extinguisher valve structure, includes disk seat (1), case (2), spring (3), fixed arm (4) and rotor arm (5), be provided with injection passage (11) on disk seat (1), the activity is provided with on disk seat (1) penetrates case (2) of injection passage (11), spring (3) promote case (2) shutoff injection passage (11) and will injection passage (11) are separated into low pressure passageway (111) with the jet orifice intercommunication and high pressure passageway (112) with the steel bottle intercommunication, case (2) top is located rotor arm (5) below, rotor arm (5) rotate set up in on disk seat (1), fixed arm (4) with disk seat (1) fixed connection, its characterized in that: the valve seat (1) is provided with a piston sleeve (12) with an opening at the bottom, a piston (13) is movably arranged in the piston sleeve (12), the piston (13) is connected with a connecting rod (14), the connecting rod (14) penetrates out of the top of the piston sleeve (12) and penetrates through a waist hole (51) in the rotating arm (5), the connecting rod (14) positioned on two sides of the rotating arm (5) is provided with a limiting block (141), a cavity enclosed by the piston (13) to the top of the piston sleeve (12) is connected with a first channel (15) communicated with a high-pressure channel (112) and a second channel (16) communicated with the outside atmosphere, and the first channel (15) and the second channel (16) are respectively provided with a first valve core part (61) and a second valve core part (62) for controlling on-off.

2. A fire extinguisher valve structure as claimed in claim 1, wherein: the first valve core part (61) and the second valve core part (62) are rotatably arranged in the valve seat (1), valve channels (63) are axially arranged on the first valve core part (61) and the second valve core part (62), and the first valve core part (61) and the second valve core part (62) rotate to enable the valve channels (63) to be communicated or cut off from channels on two sides.

3. A fire extinguisher valve structure as claimed in claim 2, wherein: the valve seat (1) is provided with a cylindrical valve chamber (17) communicated with the first channel (15) and the second channel (16), a cylindrical valve core (6) is rotatably arranged in the cylindrical valve chamber (17), the cylindrical valve core (6) is provided with the first valve core part (61) and the second valve core part (62), and at most one of the first channel (15) and the second channel (16) is communicated when the cylindrical valve core (6) is at any angle.

4. A fire extinguisher valve structure as claimed in claim 3, wherein: and a rotating handle (64) is arranged at one end of the columnar valve core (6) extending out of the valve seat (1).

5. A fire extinguisher valve structure as claimed in claim 3, wherein: the cylindrical valve core (6) is provided with a plurality of first sealing rings (65).

6. A fire extinguisher valve structure as claimed in claim 1, wherein: and a second sealing ring (142) is arranged between the connecting rod (14) and the hole wall of the top of the piston sleeve (12) through which the connecting rod passes.

7. A fire extinguisher valve structure as claimed in claim 1, wherein: a one-way valve (7) which can only flow towards the interior of the piston sleeve (12) in one way is arranged in the first channel (15).

8. A fire extinguisher valve structure as claimed in claim 1, wherein: a limiting ring (18) is arranged in the piston sleeve (12), and the limiting ring (18) limits the piston (13) to be positioned below the openings of the first channel (15) and the second channel (16).

9. A fire extinguisher valve structure as claimed in claim 1, wherein: the opening at the bottom of the piston sleeve (12) is provided with a detachable plug (8).

10. A fire extinguisher valve structure as claimed in claim 9, wherein: the plug (8) is in threaded connection with an opening at the bottom of the piston sleeve (12).