CN214534774U - Fire extinguisher valve - Google Patents

Abstract

The utility model discloses a fire extinguisher valve, which comprises a bod is provided with the import, the export, the valve body of intercommunication passageway, mobilizable setting valve rod in the intercommunication passageway, the first in command, the second handle that is used for the control valve rod with the first in command is articulated, elasticity resets, and the second in command is detained, its one end is articulated with the first in command, the other end extends and runs through the second handle to second handle side, the second handle is detained by the second in command and runs through the department and forms the clearance between through hole and the second in command is detained, the second in command is detained and is provided with the fore shaft in its rotation direction, the second handle is in under the state of second operating position, the edge of through hole is detained the distance of axis of rotation and is detained the distance of axis of rotation to the second in command and is equal to the distance of second in command. The utility model discloses it realizes locking the second handle in second operating position department through setting up the second handle and detains, and operating personnel need not to act on the second handle all the time, and it is more convenient, laborsaving to use.

Description

Fire extinguisher valve

Technical Field

The utility model belongs to the technical field of the fire extinguisher and specifically relates to a fire extinguisher valve.

Background

The fire extinguisher is a portable fire extinguishing tool, is indispensable to shuttle among people in life, and is particularly suitable for public places with high population density, production workshops which are easy to cause fire, warehouses for storing inflammable goods and the like.

The existing fire extinguisher valve comprises a valve body, a valve rod, a spring, a first handle and a second handle, wherein the valve body is provided with an inlet and an outlet, the valve rod is arranged in the valve body and used for controlling the on-off of the inlet and the outlet, the spring acts on the valve rod to enable the valve rod to always have the tendency of moving towards the closing of the inlet and the outlet, the first handle is fixed on the valve body, the second handle is hinged with the first handle, and the second handle is rotated to drive the valve rod to move towards the connecting inlet and the outlet; because the existence of spring, so the user needs to act on the second handle at every moment when using the fire extinguisher in order to realize that import and export are in the connected state always, use very inconvenient, just hard.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of existence among the prior art, the utility model provides a fire extinguisher valve, it realizes locking the second handle in second operating position department through setting up the second handle and detain for operating personnel need not to act on the second handle all the time, and import and export also are in the intercommunication state always, and it is more convenient, laborsaving to use.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a fire extinguisher valve comprises

The fire extinguisher comprises a valve body and a fire extinguisher body, wherein the valve body is provided with an inlet which is communicated with a fire extinguisher bottle in a fluid way, an outlet which is communicated with a spray nozzle of the fire extinguisher in a fluid way, and a communication channel which is used for communicating the inlet and the outlet;

the valve rod is movably arranged in the communication channel to control the connection and disconnection between the inlet and the outlet;

the first handle is fixedly arranged on the valve body;

the second handle is hinged with the first handle and used for controlling the valve rod, and the valve rod closes the communication between the inlet and the outlet when the second handle is located at a first working position; when the second handle is positioned at a second working position, the valve rod is communicated with the inlet and the outlet;

the elastic resetting piece acts on the valve rod to enable the valve rod to always have the tendency of moving towards the direction of closing the communication between the inlet and the outlet;

and a second handle buckle, one end of which is hinged with the first handle and the other end of which extends towards the second handle side and penetrates through the second handle, a through hole is formed at the position where the second handle buckle penetrates through the second handle buckle, a gap is formed between the through hole and the second handle buckle, a lock opening is arranged on the second handle buckle in the rotating direction of the second handle buckle, and the distance from the edge of the through hole to the rotating shaft of the second handle buckle is equal to the distance from the lock opening to the rotating shaft of the second handle buckle when the second handle is at the second working position.

By adopting the structure, when an operator rotates the second handle to enable the second handle to be located at the second working position, the second handle drives the valve rod to move towards the direction of communicating the inlet and the outlet by overcoming the acting force of the elastic reset piece, and the inlet is communicated with the outlet through the communication channel, so that the fire extinguishing substances in the fire extinguisher bottle are sprayed out of the outlet; if the operator rotates the second handle buckle to clamp the edge of the through hole into the locking notch on the second handle buckle, the second handle can be locked at the second working position, and the operator does not need to act on the second handle all the time, so that the second handle is still at the second working position even if the operator releases the hand for operating the second handle, and the use is more convenient and labor-saving; certainly, in the fire extinguisher assembly process, when the interior of a fire extinguisher bottle needs to be inflated, the second handle buckle has the same function, and an operator operates the second handle buckle to lock the second handle at the second working position, so that the fire extinguisher is convenient to inflate.

When an operator rotates the second handle buckle in the reverse direction, the edge of the through hole is separated from the surface of the lock port on the second handle buckle, the limit of the second handle buckle on the second handle is released, and the valve rod moves in the direction of closing off the communication between the inlet and the outlet under the action of the elastic reset piece and reversely drives the second handle to reset.

One end of the second handle buckle, which is hinged with the first handle, is positioned in the middle of the second handle buckle and is hinged through a positioning pin.

Furthermore, the communication channel penetrates through the upper end surface and the lower end surface of the valve body, an opening formed at the lower end of the valve body of the communication channel is formed as the inlet, and the outlet is arranged at the side edge of the valve body and communicated with the communication channel; the communication passage comprises a conical hole which is arranged between the inlet and the outlet and has an inner diameter gradually reduced from bottom to top; a first sealing element which is in sealing fit with the conical hole is arranged on the valve rod; the second handle is positioned above the valve rod, and the second handle does not apply downward pressure to the valve rod under the condition that the second handle is positioned at the first working position; and when the second handle is positioned at the second working position, the second handle is close to and presses down the valve rod.

With the structure, the first sealing element is in sealing fit with the tapered hole, so when the second handle presses the valve rod downwards, the first sealing element moves from the small aperture of the tapered hole to the large aperture, the sealing between the first sealing element and the tapered hole is released, and the inlet is communicated with the outlet;

when an operator releases the second handle and the second handle is buckled to release the limitation of the second handle, the elastic resetting piece drives the valve rod to move upwards, the first sealing piece moves from the large aperture of the tapered hole to the small aperture, the first sealing piece is in sealing fit with the tapered hole, and the inlet is closed to the outlet.

The first sealing element is an annular sealing gasket.

Further, the fire extinguisher valve include with import assorted pipe fitting, the protruding abutting joint of pipe fitting inner wall is protruding to lean on the arch, elasticity resets one end and leans on the lower extreme of valve rod, the other end is located in the pipe fitting and support and lean on protruding, just elasticity resets and is in compression state.

By adopting the structure, because the elastic resetting piece is in a compression state, the elastic resetting piece always exerts an upward force on the valve rod, so that the first sealing piece always has a trend of moving towards the small aperture direction side of the tapered hole, namely the first sealing piece always has a trend of being matched with the tapered hole in a sealing manner.

Specifically, the elastic reset piece is a spring.

Further, the communication passage includes an upper valve hole located above the valve body, a middle valve hole located below the upper valve hole, and a lower valve hole located below the middle valve hole; the tapered hole is positioned between the middle valve hole and the lower valve hole and is connected with the middle valve hole and the lower valve hole, and the outlet is communicated with the middle valve hole;

the aperture of the upper valve hole is matched with the valve rod, the aperture of the middle valve hole is larger than that of the upper valve hole, and the aperture of the lower valve hole is larger than that of the middle valve hole.

By adopting the structure, the upper valve hole has the function of guiding the valve rod to move, so that the valve rod moves more stably.

Further, a second seal is disposed between the valve stem and the upper valve bore.

With the structure, the second sealing element is used for sealing the gap between the valve rod and the upper valve hole, and preventing the fire extinguishing substances from flowing out of the gap between the valve rod and the upper valve hole when the inlet and the outlet are communicated.

Specifically, the position of the valve rod in the upper valve hole is inwards recessed to form a second sealing element mounting groove for mounting the second sealing element; the second sealing element is a sealing ring.

Furthermore, the fire extinguisher valve comprises a safety pin, a first safety pin hole is formed in the second handle, and the first safety pin hole is located above the first handle when the second handle is located at the first working position.

With the structure, when the second handle is located at the first working position and the safety pin is inserted into the first safety pin hole, the safety pin is in contact with the upper edge of the first handle, so that the first handle cannot rotate to the second working position without approaching the first handle; when the fire extinguisher needs to be used, an operator only needs to pull the safety pin out of the first safety pin hole; the structure effectively prevents misoperation.

Furthermore, a second safety pin hole is formed in the first handle, and the second safety pin hole and the first safety pin hole are coaxially arranged in a state that the second handle is located at a second working position.

By adopting the structure, when the second handle is positioned at the second working position, the first safety pin hole and the second safety pin hole are coaxial, and at the moment, when the safety pin is inserted into the first safety pin hole and the second safety pin hole, the safety pin can also lock the second handle to enable the second handle to be always positioned at the second working position.

Furthermore, the fire extinguisher valve comprises a safety pin chain, wherein one end of the safety pin chain is connected with the safety pin, and the other end of the safety pin chain is connected with the first handle.

With the structure, when the safety pin is not used, the safety pin chain effectively prevents the safety pin from being lost; specifically, the safety pin chain is a rubber chain.

Furthermore, the lateral wall of the valve body at the side where the inlet is formed is provided with a first limiting protrusion, and a third sealing element is sleeved on the lateral wall between the first limiting protrusion and the inlet.

One side of the valve body, which is provided with an inlet, needs to be inserted into the fire extinguisher bottle; by adopting the structure, the first limiting bulge limits the insertion depth of the valve body; the third sealing element is used for sealing a gap between the valve body and the fire extinguisher bottle to prevent leakage.

Furthermore, the valve is provided with a mounting protrusion protruding from the side wall between the first limiting protrusion and the inlet, and the third sealing element is located between the first limiting protrusion and the mounting protrusion.

With the structure, the third sealing element is limited between the first limiting bulge and the mounting bulge; the third sealing element is prevented from falling off the valve body; specifically, the third sealing element is a sealing ring;

specifically, the installation arch is provided with the screw thread, and the bottleneck department of fire extinguisher bottle is provided with the assorted screw thread, the bottleneck department screw-thread fit of valve body and fire extinguisher bottle is fixed.

Further, the valve rod comprises a valve rod body and a valve rod sleeve sleeved at the tail end of the lower end of the valve rod body, the first sealing element is sleeved at the lower end of the valve rod body and is positioned above the valve rod sleeve, and the lower end of the valve rod body protrudes above the first sealing element to form a second limiting protrusion;

the fire extinguisher valve comprises a gasket, wherein the gasket is sleeved on the valve rod body and is positioned between the second limiting protrusion and the first sealing element.

With the structure, the first sealing element is limited between the second limiting protrusion and the valve rod sleeve, so that the first sealing element is prevented from falling off from the valve rod.

The diameter of the part of the valve rod body located in the upper valve hole is larger than that of the other part of the valve body.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a fire extinguisher valve, it realizes locking the second handle in second operating position department through setting up the second handle and detain for operating personnel need not to act on the second handle all the time, and import and export also are in the intercommunication state always, and it is more convenient, laborsaving to use.

(2) The utility model discloses a fire extinguisher valve, its structural design is reasonable.

Drawings

FIG. 1 is a schematic structural view of the fire extinguisher valve of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

reference numerals: 1, a valve body; 101 an inlet; 102 an outlet; 103 communicating the channels; 1031 upper valve hole; 1032 a central valve bore; 1033 a tapered bore; 1034 lower valve hole; 104 a first limit projection; 105 mounting a boss; 2, a valve rod; 201 a valve stem body; 2011 second limit projection; 2012 second packing mounting groove; 202 a valve stem sleeve; 3 a first handle; 301 second safety pin hole; 4 a second handle; 401 through holes; 402 a first relief pin hole; 5 an elastic reset piece; 6, a second handle buckle; 601, locking a notch; 7 a first seal; 8, pipe fittings; 801 against the projection; 9 a second seal; 10, a safety pin; 11 a safety pin chain; 12 a third seal; 13 shim.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figures 1-3, a fire extinguisher valve comprises

A valve body 1 provided with an inlet 101 establishing fluid communication with a fire extinguisher cylinder, an outlet 102 establishing fluid communication with a fire extinguisher nozzle, and a communication passage 103 for communicating the inlet 101 with the outlet 102;

a valve rod 2 movably arranged in the communication channel 103 to control the on-off between the inlet 101 and the outlet 102;

a first handle 3 fixedly provided on the valve body 1;

a second handle 4, which is hinged with the first handle 3 and is used for controlling the valve rod 2, wherein the valve rod 2 closes the communication between the inlet 101 and the outlet 102 under the state that the second handle 4 is positioned at a first working position; in the state that the second handle 4 is located at the second working position, the valve rod 2 is communicated with the inlet 101 and the outlet 102;

an elastic reset piece 5 acting on the valve rod 2 to enable the valve rod 2 to always have a tendency of moving towards a direction of closing the communication between the inlet 101 and the outlet 102;

and a second handle fastener 6 having one end hinged to the first handle 3 and the other end extending toward the second handle 4 and penetrating the second handle 4, wherein a through hole 401 is formed at a portion of the second handle 4 penetrated by the second handle fastener 6, and a gap is formed between the through hole 401 and the second handle fastener 6, the second handle fastener 6 is provided with a locking notch 601 in a rotation direction thereof, and a distance from an edge of the through hole 401 to a rotation axis of the second handle fastener 6 is equal to a distance from the locking notch 601 to the rotation axis of the second handle fastener 6 in a state where the second handle 4 is at the second operating position.

With the structure, when an operator rotates the second handle 4 to enable the second handle to be located at the second working position, the second handle 4 drives the valve rod 2 to move towards the direction for communicating the inlet 101 with the outlet 102 against the action force of the elastic resetting piece 5, the inlet 101 is communicated with the outlet 102 through the communication channel 103, and therefore fire extinguishing substances in the fire extinguisher bottle are sprayed out of the outlet 102; if the operator rotates the second handle fastener 6 to clamp the edge of the through hole 401 into the locking notch 601 of the second handle fastener 6, the second handle 4 can be locked at the second working position, and at this time, the operator does not need to act on the second handle 4 all the time, and even if the operator releases the handle for operating the second handle 4, the second handle 4 is still at the second working position, so that the use is more convenient and labor-saving; certainly, in the fire extinguisher assembly process, when needing to inflate in the fire extinguisher bottle, second handle buckle 6 has the same function, and operating personnel operates second handle buckle 6 and locks second handle 4 and be in second operating position department, conveniently aerifys.

When the operator rotates the second handle buckle 6 in the reverse direction, the edge of the through hole 401 is disengaged from the locking notch 601 on the second handle buckle 6, the second handle 4 is released from being restricted by the second handle buckle 6, the valve rod 2 moves in the direction of closing off the communication between the inlet 101 and the outlet 102 under the action of the elastic resetting piece 5, and the second handle 4 is reversely driven to reset.

The end of the second handle buckle 6 hinged with the first handle 3 is positioned in the middle of the second handle buckle 6 and is hinged through a positioning pin.

Preferably, the communication channel 103 penetrates through the upper and lower end surfaces of the valve body 1, an opening formed at the lower end of the valve body 1 by the communication channel 103 is formed as the inlet 101, and the outlet 102 is arranged at the side of the valve body 1 and is communicated with the communication channel 103; the communication passage 103 includes a tapered hole 1033 disposed between the inlet 101 and the outlet 102 and having an inner diameter gradually decreasing from bottom to top; the valve rod 2 is provided with a first sealing element 7 which is in sealing fit with the tapered hole 1033; the second handle 4 is positioned above the valve rod 2, and the second handle 4 does not apply downward pressure to the valve rod 2 in the state that the second handle 4 is positioned at the first working position; when the second handle 4 is located at the second working position, the second handle 4 is close to pressing down the valve rod 2.

With the above structure, since the tapered hole 1033 is in sealing engagement with the first sealing member 7, when the second handle 4 presses down the valve rod 2, the first sealing member 7 moves from the small aperture to the large aperture of the tapered hole 1033, the sealing between the first sealing member 7 and the tapered hole 1033 is released, and the inlet 101 and the outlet 102 are communicated;

when the operator releases the second handle 4 and the second handle 4 is released from the second handle buckle 6, the elastic restoring member 5 drives the valve rod 2 to move upwards, the first sealing member 7 moves from the large aperture of the tapered hole 1033 to the small aperture, the first sealing member 7 is in sealing fit with the tapered hole 1033, and the communication between the inlet 101 and the outlet 102 is cut off.

The first seal 7 is an annular gasket.

Preferably, the fire extinguisher valve includes with import 101 assorted pipe fitting 8, 8 inner walls of pipe fitting are protruding to have and to support and lean on protruding 801, elasticity resets 5 one end and supports and lean on the lower extreme of valve rod 2, the other end is located in pipe fitting 8 and support and lean on protruding 801, just elasticity resets 5 and is in compression state.

With the above structure, since the elastic restoring member 5 is in a compressed state, the elastic restoring member 5 always applies an upward force to the valve rod 2, so that the first sealing member 7 always has a tendency to move toward the small aperture direction of the tapered hole 1033, that is, the first sealing member 7 always has a tendency to be in sealing engagement with the tapered hole 1033.

Specifically, the elastic restoring member 5 is a spring.

Preferably, the communication passage 103 includes an upper valve hole 1031 located above the valve body 1, a middle valve hole 1032 located below the upper valve hole 1031, and a lower valve hole 1034 located below the middle valve hole 1032; the tapered bore 1033 is located between the middle valve bore 1032 and the lower valve bore 1034 and connects the middle valve bore 1032 with the lower valve bore 1034, and the outlet 102 communicates with the middle valve bore 1032;

the aperture of the upper valve hole 1031 is matched with the valve rod 2, the aperture of the middle valve hole 1032 is larger than the upper valve hole 1031, and the aperture of the lower valve hole 1034 is larger than the middle valve hole 1032.

With the above structure, the upper valve hole 1031 has a function of guiding the movement of the valve rod 2, so that the movement of the valve rod 2 is more stable.

Preferably, a second sealing member 9 is disposed between the valve stem 2 and the upper valve hole 1031.

With the above structure, the second sealing member 9 is used for sealing the gap between the valve stem 2 and the upper valve hole 1031 to prevent the fire extinguishing substance from flowing out from the gap between the valve stem 2 and the upper valve hole 1031 when the inlet 101 is communicated with the outlet 102.

Specifically, the position of the valve rod 2 in the upper valve hole 1031 is recessed inwards to form a second seal mounting groove 2012 for mounting the second seal 9; the second sealing element 9 is a sealing ring.

Preferably, the fire extinguisher valve comprises a safety pin 10, the second handle 4 is provided with a first safety pin hole 402, and the first safety pin hole 402 is positioned above the first handle 3 when the second handle 4 is positioned at the first working position.

With the above structure, when the second handle 4 is located at the first working position and the safety pin 10 is inserted into the first safety pin hole 402, the safety pin 10 contacts with the upper edge of the first handle 3, so that the first handle 3 cannot rotate to the side close to the first handle 3, that is, cannot rotate to the second working position; when the fire extinguisher needs to be used, an operator only needs to pull the safety pin 10 out of the first safety pin hole 402; the structure effectively prevents misoperation.

Preferably, the first handle 3 is provided with a second safety pin hole 301, and in a state where the second handle 4 is located at the second operating position, the second safety pin hole 301 and the first safety pin hole 402 are coaxially arranged.

With the above structure, when the second handle 4 is located at the second working position, the first safety pin hole 402 and the second safety pin hole 301 are coaxial, and at this time, when the safety pin 10 is inserted into the first safety pin hole 402 and the second safety pin hole 301, the safety pin 10 can also lock the second handle 4 so that it is always located at the second working position.

Preferably, the fire extinguisher valve comprises a safety pin chain 11, one end of the safety pin chain 11 is connected with the safety pin 10, and the other end of the safety pin chain 11 is connected with the first handle 3.

With the above structure, when the safety pin 10 is not used, the safety pin chain 11 effectively prevents the loss of the safety pin 10; specifically, the safety pin chain 11 is a rubber chain.

Preferably, a first limiting protrusion 104 protrudes from a side wall of the valve body 1 on the side where the inlet 101 is arranged, and a third sealing element 12 is sleeved on the side wall between the first limiting protrusion 104 and the inlet 101.

One side of the valve body 1, which is provided with an inlet 101, needs to be inserted into the fire extinguisher bottle; with the structure, the first limiting bulge 104 limits the insertion depth of the valve body 1; the third sealing member 12 is used for sealing a gap between the valve body 1 and the fire extinguisher bottle to prevent leakage.

Preferably, the valve has a mounting protrusion 105 protruding from a sidewall between the first position-limiting protrusion 104 and the inlet 101, and the third sealing element 12 is located between the first position-limiting protrusion 104 and the mounting protrusion 105.

With the above structure, the third sealing element 12 is limited between the first limiting protrusion 104 and the mounting protrusion 105; the third sealing element 12 is prevented from falling off the valve body 1; specifically, the third sealing element 12 is a sealing ring;

specifically, the installation bulge 105 is provided with the screw thread, and the bottleneck department of fire extinguisher bottle is provided with the assorted screw thread, valve body 1 is fixed with the bottleneck department screw-thread fit of fire extinguisher bottle.

Preferably, the valve rod 2 comprises a valve rod body 201 and a valve rod sleeve 202 which is sleeved at the end of the lower end of the valve rod body 201, the first sealing element 7 is sleeved at the lower end of the valve rod body 201 and is located above the valve rod sleeve 202, and the lower end of the valve rod body 201 protrudes above the first sealing element 7 to form a second limit protrusion 2011;

the fire extinguisher valve includes gasket 13, gasket 13 cover is established on the valve rod body 201, and is located second spacing arch 2011 with between the first sealing member 7.

With the above structure, the first sealing member 7 is limited between the second limiting protrusion 2011 and the valve stem sleeve 202, and the first sealing member 7 is prevented from falling off from the valve stem 2.

The diameter of the portion of the valve stem body 201 located in the upper valve hole 1031 is larger than the diameter of the other portion of the valve body 1.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A fire extinguisher valve which characterized in that: comprises that

A valve body (1) provided with an inlet (101) establishing fluid communication with a fire extinguisher cylinder, an outlet (102) establishing fluid communication with a fire extinguisher spray head, and a communication passage (103) for communicating the inlet (101) and the outlet (102);

the valve rod (2) is movably arranged in the communication channel (103) to control the connection and disconnection between the inlet (101) and the outlet (102);

a first handle (3) fixedly arranged on the valve body (1);

a second handle (4) hinged to the first handle (3) for controlling the valve stem (2), the valve stem (2) closing the communication between the inlet (101) and the outlet (102) in the state of the second handle (4) in the first work position; the valve rod (2) is communicated with the inlet (101) and the outlet (102) under the condition that the second handle (4) is positioned at a second working position;

an elastic reset piece (5) acting on the valve rod (2) to enable the valve rod (2) to always have a tendency to move towards a direction of closing the communication between the inlet (101) and the outlet (102);

and a second handle buckle (6), one end of which is hinged with the first handle (3), the other end of which extends towards the second handle (4) and penetrates through the second handle (4), a through hole (401) is formed at the position where the second handle (4) is penetrated by the second handle buckle (6), a gap is formed between the through hole (401) and the second handle buckle (6), a locking notch (601) is arranged on the second handle buckle (6) in the rotation direction, and the distance from the edge of the through hole (401) to the rotation axis of the second handle buckle (6) is equal to the distance from the locking notch (601) to the rotation axis of the second handle buckle (6) when the second handle (4) is at the second working position.

2. A fire extinguisher valve as claimed in claim 1, wherein: the communication channel (103) penetrates through the upper end surface and the lower end surface of the valve body (1), an opening formed in the lower end of the valve body (1) of the communication channel (103) is formed as the inlet (101), and the outlet (102) is arranged on the side edge of the valve body (1) and communicated with the communication channel (103); the communication passage (103) includes a tapered hole (1033) which is provided between the inlet (101) and the outlet (102) and has an inner diameter gradually decreasing from bottom to top; a first sealing element (7) which is in sealing fit with the tapered hole (1033) is arranged on the valve rod (2); the second handle (4) is positioned above the valve rod (2), and the second handle (4) does not apply downward pressure to the valve rod (2) in the state that the second handle (4) is positioned at the first working position; and when the second handle (4) is positioned at the second working position, the second handle (4) is close to and presses down the valve rod (2).

3. A fire extinguisher valve as claimed in claim 2, wherein: include with import (101) assorted pipe fitting (8), pipe fitting (8) inner wall is protruding to have and to support and lean on protruding (801), elasticity resets piece (5) one end and supports and lean on the lower extreme of valve rod (2), the other end is located in pipe fitting (8) and support and lean on protruding (801), just elasticity resets piece (5) and is in compression state.

4. A fire extinguisher valve as claimed in claim 2, wherein: the communication passage (103) includes an upper valve hole (1031) located above the valve body (1), a middle valve hole (1032) located below the upper valve hole (1031), and a lower valve hole (1034) located below the middle valve hole (1032); the tapered bore (1033) is located between the center valve bore (1032) and the lower valve bore (1034) and is in communication with the center valve bore (1032) and the lower valve bore (1034), and the outlet (102) is in communication with the center valve bore (1032);

the aperture of the upper valve hole (1031) is matched with the valve rod (2), the aperture of the middle valve hole (1032) is larger than that of the upper valve hole (1031), and the aperture of the lower valve hole (1034) is larger than that of the middle valve hole (1032).

5. The fire extinguisher valve of claim 4, wherein: and a second sealing element (9) is arranged between the valve rod (2) and the upper valve hole (1031).

6. A fire extinguisher valve as claimed in claim 2, wherein: the safety handle comprises a safety pin (10), wherein a first safety pin hole (402) is formed in the second handle (4), the second handle (4) is located at a first working position, and the first safety pin hole (402) is located above the first handle (3).

7. The fire extinguisher valve of claim 6, wherein: the first handle (3) is provided with a second safety pin hole (301), and the second safety pin hole (301) and the first safety pin hole (402) are coaxially arranged under the condition that the second handle (4) is located at a second working position.

8. The fire extinguisher valve of claim 6, wherein: the safety catch comprises a safety catch chain (11), wherein one end of the safety catch chain (11) is connected with the safety catch (10), and the other end of the safety catch chain (11) is connected with the first handle (3).

9. A fire extinguisher valve as claimed in claim 1, wherein: a first limiting bulge (104) is arranged on the side wall of the valve body (1) on the side provided with the inlet (101), and a third sealing element (12) is sleeved on the side wall between the first limiting bulge (104) and the inlet (101);

the side wall of the valve between the first limiting bulge (104) and the inlet (101) is provided with a mounting bulge (105) in a protruding mode, and the third sealing element (12) is located between the first limiting bulge (104) and the mounting bulge (105).

10. A fire extinguisher valve as claimed in claim 2, wherein: the valve rod (2) comprises a valve rod body (201) and a valve rod sleeve (202) sleeved at the tail end of the lower end of the valve rod body (201), the first sealing element (7) is sleeved at the lower end of the valve rod body (201) and is positioned above the valve rod sleeve (202), and the lower end of the valve rod body (201) protrudes above the first sealing element (7) to form a second limiting protrusion (2011);

the fire extinguisher valve comprises a gasket (13), wherein the gasket (13) is sleeved on the valve rod body (201) and is positioned between the second limiting protrusion (2011) and the first sealing element (7).

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