CN214534555U

CN214534555U - Valve structure for portable fire extinguisher

Info

Publication number: CN214534555U
Application number: CN202120860306.XU
Authority: CN
Inventors: 余钟清; 王苗泉; 何梦佳; 潘小明; 何行成
Original assignee: Ningbo Kaituo Valve Co ltd
Current assignee: Ningbo Kaituo Valve Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-10-29
Anticipated expiration: 2031-04-25

Abstract

The utility model discloses a valve structure for a portable fire extinguisher, which comprises a valve body, wherein the valve body comprises a first channel which is formed in the valve body and is communicated from top to bottom and a valve outlet which is arranged on the side wall of the valve body, and the valve outlet extends inwards and is communicated with the first channel to form a second channel through the valve body; the valve rod structure is arranged in the first channel and used for opening and closing the valve outlet, the valve rod structure penetrates through the valve body and extends out of the top of the valve body, the valve rod structure comprises a valve rod cap, a reset structure and a valve rod, the valve rod cap is arranged in the first channel and used for controlling the first channel and the second channel to be switched on and off, the valve rod cap is arranged above the valve rod cap and penetrates through the shell and used for driving the valve rod of the valve rod cap, the reset structure is arranged on the valve rod and provides the valve rod with upward force from beginning to end, and the reset structure is arranged on the part, extending out of the valve body, of the valve rod.

Description

Valve structure for portable fire extinguisher

Technical Field

The utility model relates to a technical field of fire extinguisher especially relates to a valve structure for portable fire extinguisher.

Background

Like fire extinguishers such as dry powder, water base, foam be portable fire extinguisher basically, the whole valve accessories of this type of fire extinguisher all are the material of band iron, and this kind of material rusts the scheduling problem easily appearing after long-time the use, and in current valve, the reset structure of valve rod generally sets up in the valve, is unfavorable for subsequent maintenance work like this, and is more troublesome.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a valve structure for portable fire extinguisher, the reset structure that will realize the reset function of valve rod sets up in the outside of valve body, even if appear oxidizing rust scheduling problem also need not unpack apart holistic valve body like this, has not only reduced the extravagant and loaded down with trivial details process of unnecessary, has still guaranteed the sealing performance of whole valve body simultaneously.

(II) technical scheme

The utility model provides a solution that above-mentioned technical problem adopts is a valve structure for portable fire extinguisher, including the valve body, the valve body includes the first passageway that forms in the valve body and that link up from top to bottom and locates the valve outlet on the lateral wall of the valve body, the valve outlet extends inwards and runs through the valve body and the first passageway communicates and forms the second passageway; the valve rod structure is arranged in the first channel and used for opening and closing the valve outlet, the valve rod structure penetrates through the valve body and extends out of the top of the valve body, the valve rod structure comprises a valve rod cap, a valve rod and a reset structure, the valve rod cap is arranged in the first channel and used for controlling the first channel and the second channel to be connected and disconnected, the valve rod is arranged above the valve rod cap and penetrates through the shell and used for driving the valve rod cap, the reset structure is arranged on the valve rod and provides upward force for the valve rod, and the reset structure is arranged on the part, extending out of the valve body, of the valve rod.

Preferably, the inner diameter of the first channel is gradually increased from top to bottom, and when the valve rod is in an unstressed state, the valve rod cap seals the first channel to block the second channel; when the valve rod is forced to move downwards, the valve rod cap is driven to move downwards, and then the first channel is communicated with the second channel.

Preferably, the valve rod cap is mounted at the lower end of the valve rod through threaded connection, and a gasket and a first sealing element are connected between the valve rod cap and the valve rod, so that the sealing performance of the valve rod cap on the valve rod is enhanced.

Preferably, a second sealing element is installed on the part, arranged in the first channel, of the valve rod, so that the sealing performance of the valve rod in the first channel is enhanced, and the air leakage phenomenon of the valve body is prevented.

Adopt above-mentioned scheme, to reset the structure setting in the outside of valve body, even appear oxidizing and rust scheduling problem also need not take apart holistic valve body like this, has not only reduced the extravagant and loaded down with trivial details process of unnecessary, avoids taking apart the valve main part simultaneously and has still guaranteed the sealing performance of whole valve body.

Furthermore, the reset structure comprises a reset piece sleeved on the valve rod and a valve rod pin detachably connected to the valve rod, one end of the reset piece is connected to the top end of the valve body, and the other end of the reset piece is connected to the valve rod pin; when the valve rod is stressed to move downwards, the reset piece is enabled to extrude downwards to store elastic potential energy, and when the valve rod is not stressed, the elastic potential energy stored in the reset piece provides force for the valve rod to enable the valve rod to move upwards and reset to the initial position.

Preferably, the return member comprises a compression spring.

By adopting the scheme, when the valve rod pin needs to be overhauled, the valve rod pin can be replaced by the reset piece, so that the valve rod pin is convenient to overhaul, manpower and material resources during overhauling and maintenance are saved, and the cost is greatly reduced.

Further, the valve rod pin sleeve is established the valve rod is close to its top department, the valve rod pin with reset and install first gasket between the piece, first gasket is close to the one end that resets extends down and forms a axial region, is used for the installation reset the piece.

Further, the top of valve body extends upwards and forms and is used for the installation reset the piece installation department that resets, reset the piece installation department set up with the cavity of first passageway intercommunication.

Further, the valve further comprises a pressing handle which is arranged on the top of the valve body and is used for driving the valve rod.

Preferably, the pressing handle is rotatably connected with the valve body, and the pressing handle is mounted on the top of the valve rod and used for pressing the valve rod and driving the valve rod.

Preferably, a safety pin for preventing rotation of the pressing handle is mounted on the pressing handle.

Specifically, the pressing handle is pressed down, and the pressing handle extrudes the valve rod to enable the valve rod to move downwards and drive the valve rod cap to move downwards, so that the first channel is communicated with the second channel; when the pressing handle is released, the reset piece gives an upward force to the valve rod pin and drives the valve rod and the valve rod cap to move upwards synchronously until the valve rod cap is firmly extruded in the first channel, so that the first channel and the second channel are blocked.

Further, the press handle is detachably mounted at the top of the valve body through a connecting piece, wherein the top end of the valve body extends upwards and outwards to form a first press handle mounting piece and a second press handle mounting piece for mounting the press handle.

Preferably, the connecting piece includes that the rivet is detained, dismantlement and installation when being convenient for follow-up maintenance, and right press the handle with the damage of valve body junction is little, and then has guaranteed press the handle with the zonulae occludens of valve body.

Further, the first pressing handle mounting piece and the second pressing handle mounting piece are respectively provided with a first mounting hole and a second mounting hole which are used for matching the connecting piece, a 120-degree obtuse angle is formed between the first pressing handle mounting piece and the top end of the valve body, and a 110-degree obtuse angle is formed between the second pressing handle mounting piece and the top end of the valve body.

Further, the aperture of the first mounting hole is 9mm, the linear distance between the center point of the first mounting hole and the central axis of the first channel is 18mm, the aperture of the second mounting hole is 9mm, and the linear distance between the center point of the second mounting hole and the central axis of the first channel is 16.5 mm; and the connecting line between the central point of the first mounting hole and the central point of the second mounting hole is 35mm in length.

Furthermore, a lifting handle matched with the pressing handle to drive the valve rod is arranged on the side wall of the valve body and below one side of the operating end of the pressing handle.

Preferably, the carrying handle is connected to the side wall of the valve body in a threaded connection mode, so that the stability of the carrying handle on the valve body is guaranteed, and meanwhile, the carrying handle is convenient to disassemble and assemble and convenient to overhaul.

Further, an air inlet channel communicated with the first channel is arranged on the valve body.

Preferably, an air inlet valve is installed in the air inlet channel, and a cavity is arranged in the air inlet valve and used for ensuring the entry of air; the valve body is internally provided with a valve core and a safety device, wherein the valve core is made of English, the valve body is inflated by the valve core when the valve body is used, the mounting device comprises a connecting seat and a release spring arranged between the connecting seat and the valve core, and the periphery of the air inlet valve and the periphery of the valve core are respectively provided with a sealing ring for preventing gas in a fire extinguisher from leaking out from the positions so as to ensure the sealing property of the whole valve body; and the connecting seat is provided with a through hole which is coaxial with the air inlet channel, and a filter screen is arranged in the through hole of the connecting seat and used for filtering the gas entering the air charging channel.

Preferably, a pressure indicator is arranged at the outlet of the air inlet channel and used for monitoring the pressure in the fire extinguisher; when the air pressure in the fire extinguisher is higher, the pressure indicator is pulled out, the valve core is extruded to enable the release spring to be stressed and compressed, then the air can flow out, and the air pressure returns to normal; and releasing the valve core, wherein the release spring restores the original state and drives the valve core to move towards the direction away from the connecting seat until the valve core seals the air inlet valve to prevent air leakage.

(III) advantageous effects

Compared with the prior art, the utility model designs a valve structure for a portable fire extinguisher, which arranges the reset structure for realizing the reset function of the valve rod outside the valve body, thus avoiding disassembling the whole valve body even if the problems of oxidation, rusting and the like occur, reducing unnecessary waste and complex procedures, and simultaneously ensuring the sealing performance of the whole valve body; simultaneously, connect through a connecting piece the pressure handle with the valve body, easy dismounting, convenient to overhaul to manpower and material resources when having saved the maintenance, greatly reduced the cost.

Drawings

Fig. 1 is a sectional view showing a valve structure for a fire extinguisher in accordance with the present embodiment;

FIG. 2 is an enlarged view of the point A in FIG. 1;

FIG. 3 is an enlarged view of the point B in FIG. 1;

FIG. 4 is a schematic view showing the structure of a valve for a fire extinguisher in accordance with the present embodiment (excluding a pressing handle and a carrying handle);

fig. 5 is a cross-sectional view at C-C in fig. 4.

Description of reference numerals: 1. a valve body; 10. an air intake passage; 101. an intake valve; 102. a valve core; 103. a safety device; 103-1, a connecting seat; 103-2, release spring; 11. a first channel; 12. a valve outlet; 13. a second channel; 14. a valve stem structure; 141. a valve stem cap; 142. a valve stem; 142-1, a second seal; 143. a reset structure; 143-1, a reset member; 143-2, a valve stem pin; 143-3, a first gasket; 143-3a, a shaft portion; 144. a second gasket; 145. a first seal member; 15. a reset member mounting portion; 16. pressing the handle; 161. a connecting member; 17. a first press handle mounting member; 171. a first mounting hole; 18. a second press handle mounting member; 181. a second mounting hole; 19. a handle.

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.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this embodiment:

as shown in fig. 1-3, the valve structure for a portable fire extinguisher of the present embodiment includes a valve body 1, the valve body 1 includes a first channel 11 formed in the valve body 1 and penetrating from top to bottom, and a valve outlet 12 disposed on a side wall of the valve body 1, the valve outlet 12 extends inward and penetrates through the valve body 1 to communicate with the first channel 11 to form a second channel 13; the valve rod structure 14 is installed in the first channel 11 and used for opening and closing the valve outlet 12, the valve rod structure 14 penetrates through the valve body 1 and extends out of the top of the valve body 1, the valve rod structure 14 comprises a valve rod cap 141 which is arranged in the first channel 11 and used for controlling the first channel and the second channel to be opened and closed, a valve rod 142 which is arranged above the valve rod cap 141 and penetrates through the shell and used for driving the valve rod cap 141, and a reset structure 143 which is installed on the valve rod 142 and used for providing an upward force to the valve rod 142, wherein the reset structure 143 is arranged on a part of the valve rod 142 extending out of the valve body 1. Preferably, the inner diameter of the first channel 11 gradually increases from top to bottom, and when the valve rod 142 is in an unstressed state, the valve rod cap 141 seals the first channel 11 to block the second channel 13; when the valve rod 142 is forced to move downwards, the valve rod cap 141 is driven to move downwards, and then the first channel 11 is communicated with the second channel 13. Preferably, the valve stem cap 141 is mounted at the lower end of the valve stem 142 by a screw connection, and a second gasket 144 and a first sealing member 145 are connected between the valve stem cap 141 and the valve stem 142, so as to enhance the sealing performance of the valve stem cap 141 on the valve stem 142. Preferably, a second sealing member 142-1 is installed on a portion of the valve stem 142 disposed in the first passage 11, so as to enhance the sealing performance of the valve stem 142 in the first passage 11 and prevent the air leakage phenomenon of the valve body 1. Adopt above-mentioned scheme, with the setting of the structure 143 that resets in valve body 1's outside, even the oxidation appears and rusts the scheduling problem and also need not unpack apart holistic valve body 1 like this, not only reduced unnecessary extravagant and loaded down with trivial details process, avoid taking apart the valve main part simultaneously and still guaranteed whole valve body 1's sealing performance.

As shown in fig. 2, further, the resetting structure 143 includes a resetting member 143-1 sleeved on the valve rod 142, and a valve rod pin 143-2 detachably connected to the valve rod 142, one end of the resetting member 143-1 is connected to the top end of the valve body 1, and the other end is connected to the valve rod pin 143-2; when the valve rod 142 is forced to move downwards, the resetting part 143-1 is enabled to press downwards to store elastic potential energy, and when the valve rod 142 is not forced, the elastic potential energy stored by the resetting part 143-1 gives a force to the valve rod 142 to enable the valve rod 142 to move upwards and reset to the initial position. Preferably, the restoring member 143-1 includes a compression spring. By adopting the scheme, when the valve rod pin 143-2 is required to be overhauled, the resetting piece 143-1 can be replaced by detaching the valve rod pin 143-2, so that the valve rod pin is convenient to overhaul, thereby saving manpower and material resources during overhauling and maintaining and greatly reducing the cost. Further, the valve rod pin 143-2 is sleeved on the valve rod 142 near the top thereof, a first gasket 143-3 is installed between the valve rod pin 143-2 and the reset member 143-1, and one end of the first gasket 143-3 near the reset member 143-1 extends downward to form a shaft portion 143-3a for installing the reset member 143-1. Further, the top of the valve body 1 extends upwards to form a resetting piece mounting part 15 for mounting the resetting piece 143-1, and the resetting piece mounting part 15 is provided with a cavity communicated with the first channel 11.

As shown in fig. 1 to 3, further, a pressing handle 16 for driving the valve stem 142 is installed on the top of the valve body 1. Preferably, the pressing handle 16 is rotatably connected to the valve body 1, and the pressing handle 16 is mounted on the top of the valve stem 142 for pressing the valve stem 142 and driving the valve stem 142. Preferably, a safety pin (not shown) for preventing rotation is installed on the pressing handle 16. Specifically, the pressing handle 16 is pressed, and the pressing handle 16 presses the valve rod 142, so that the valve rod 142 moves downwards and drives the valve rod cap 141 to move downwards, thereby realizing the communication between the first channel 11 and the second channel 13; when the pressing handle 16 is released, the reset member 143-1 applies an upward force to the valve rod pin 143-2, and drives the valve rod 142 and the valve rod cap 141 to move upward synchronously until the valve rod cap 141 is pressed firmly in the first passage 11, thereby blocking the first passage 11 and the second passage 13. Further, the press handle 16 is detachably mounted on the top of the valve body 1 through a connecting member 161, wherein the top end of the valve body 1 extends upwards and outwards to form a first press handle mounting member 17 and a second press handle mounting member 18 for mounting the press handle 16. Preferably, the connecting member 161 comprises a rivet buckle, which facilitates the detachment and installation during subsequent maintenance, and the joint between the pressing handle 16 and the valve body 1 is not damaged much, thereby ensuring the tight connection between the pressing handle 16 and the valve body 1. Further, the first and second squeeze

grip mounting members

17 and 18 are respectively provided with first and second mounting

holes

171 and 181 for matching the connecting member 161, and the first squeeze grip 16 mounting member and the top end of the valve body 1 form an obtuse angle of 120 degrees, and the second squeeze grip mounting member 18 and the top end of the valve body 1 form an obtuse angle of 110 degrees. Further, the first mounting hole 171 has a hole diameter of 9mm, the linear distance between the center point thereof and the central axis of the first passage 11 is 18mm, the hole diameter of the second mounting hole 181 is 9mm, and the linear distance between the center point thereof and the central axis of the first passage 11 is 16.5 mm; a connecting line between a center point of the first mounting hole 171 and a center point of the second mounting hole 181 is 35mm long.

As shown in fig. 1, a handle 19 matched with the pressure handle 16 to drive the valve rod 142 is further arranged on the side wall of the valve body 1 below the side of the operating end of the pressure handle 16. Preferably, the handle 19 is connected to the side wall of the valve body 1 in a threaded connection mode, so that the stability of the handle 19 on the valve body 1 is guaranteed, and meanwhile, the valve is convenient to disassemble and assemble and convenient to overhaul.

As shown in fig. 4 to 5, further, an intake passage 10 communicating with the first passage 11 is provided in the valve body 1. Preferably, an air inlet valve 101 is installed in the air inlet passage 10, and a cavity is arranged in the air inlet valve 101 and used for ensuring the entry of air; a valve core 102 and a safety device 103 are installed in the air inlet valve 101, wherein the valve core 102 is made of English, when the air inlet valve is used, the valve body is specifically inflated through the valve core 102, the installation device comprises a connecting seat 103-1 and a release spring 103-2 arranged between the connecting seat 103-1 and the valve core 102, wherein sealing rings are respectively installed on the periphery of the air inlet valve 101 and the periphery of the valve core 102 and used for preventing gas in a fire extinguisher from leaking from the positions, and therefore the sealing performance of the whole valve body 1 is guaranteed; and the connecting seat 103-1 is provided with a through hole coaxially arranged with the air inlet channel 10, and a filter screen is arranged in the through hole of the connecting seat 103-1 and used for filtering the gas entering the inflation channel. Preferably, a pressure indicator is installed at the outlet of the air inlet channel 10 and used for monitoring the pressure in the fire extinguisher; when the air pressure in the fire extinguisher is larger, the pressure indicator is pulled out, the valve core 102 is extruded, the release spring 103-2 is stressed and compressed, the air can flow out, and the air pressure returns to normal; when the valve core 102 is released, the release spring 103-2 restores to the original state and drives the valve core 102 to move away from the connecting seat 103-1 until the valve core 102 seals the intake valve 101 to prevent air leakage.

The technical requirements of the valve structure for the portable fire extinguisher of the embodiment are as follows:

1. the valve structure can be flexibly opened, and the hand feeling is proper; 2. when the safety pin is not pulled out, the minimum clearance between the pressing handle and the top end of the valve rod is not less than 1 mm; 3. the valve is subjected to an air tightness test with the test pressure of 2.1MPa, and the pressure is maintained for 3min without any leakage; 4. the valve is subjected to a hydrostatic strength test with a test pressure of 3.0MPa, and no leakage or visible deformation is obtained in the test; 5. during the assembly and test process, attention is paid to protecting the valve, and the appearance and the threads of the valve cannot be knocked and damaged.

The above 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

1. A valve structure for a portable fire extinguisher, comprising a valve body (1), characterized in that: the valve body (1) comprises a first channel (11) which is formed in the valve body (1) and runs through from top to bottom and a valve outlet (12) arranged on the side wall of the valve body (1), wherein the valve outlet (12) extends inwards, runs through the valve body (1) and is communicated with the first channel (11) to form a second channel (13); the valve rod structure (14) used for opening and closing the valve outlet (12) is installed in the first channel (11), the valve rod structure (14) penetrates through the valve body (1) and extends out of the top of the valve body (1), the valve rod structure (14) comprises a valve rod cap (141) which is arranged in the first channel (11) and used for controlling the first channel (11) and the second channel (13) to be switched on and off, a valve rod (142) which is arranged above the valve rod cap (141) and penetrates through the shell and used for driving the valve rod cap (141), and a resetting structure (143) which is installed on the valve rod (142) and gives an upward force to the valve rod (142), wherein the resetting structure (143) is arranged on a part of the valve rod (142) extending out of the valve body (1).

2. The valve structure for a portable fire extinguisher according to claim 1, wherein: the resetting structure (143) comprises a resetting piece (143-1) sleeved on the valve rod (142) and a valve rod pin (143-2) detachably connected to the valve rod (142), one end of the resetting piece (143-1) is connected to the top end of the valve body (1), and the other end of the resetting piece is connected to the valve rod pin (143-2); when the valve rod (142) is forced to move downwards, the resetting piece (143-1) is enabled to be pressed downwards to store elastic potential energy, and when the valve rod (142) is not forced, the elastic potential energy stored by the resetting piece (143-1) gives a force to the valve rod (142) to enable the valve rod (142) to move upwards and reset to the initial position.

3. The valve structure for a portable fire extinguisher according to claim 2, wherein: the valve rod pin (143-2) is sleeved on the valve rod (142) close to the top of the valve rod pin, a first gasket (143-3) is installed between the valve rod pin (143-2) and the resetting piece (143-1), and one end, close to the resetting piece (143-1), of the first gasket (143-3) extends downwards to form a shaft portion (143-3a) for installing the resetting piece (143-1).

4. The valve structure for a portable fire extinguisher according to claim 1, wherein: the top of valve body (1) extends upwards and forms and is used for the installation reset a piece installation department (15) that resets of piece (143-1), reset a piece installation department (15) set up with the cavity of first passageway (11) intercommunication.

5. The valve structure for a portable fire extinguisher according to claim 1, wherein: the valve further comprises a pressing handle (16) which is arranged at the top of the valve body (1) and is used for driving the valve rod (142).

6. The valve structure for a portable fire extinguisher according to claim 5, wherein: the press handle (16) is detachably arranged on the top of the valve body (1) through a connecting piece (161), wherein the top end of the valve body (1) extends upwards and outwards to form a first press handle mounting piece (17) and a second press handle mounting piece (18) for mounting the press handle (16).

7. The valve structure for a portable fire extinguisher according to claim 6, wherein: the first press handle mounting piece (17) and the second press handle mounting piece (18) are respectively provided with a first mounting hole (171) and a second mounting hole (181) for matching the connecting piece (161), an obtuse angle of 120 degrees is formed between the first press handle mounting piece (17) and the top end of the valve body (1), and an obtuse angle of 110 degrees is formed between the second press handle mounting piece (18) and the top end of the valve body (1).

8. The valve structure for a portable fire extinguisher according to claim 7, wherein: the first mounting hole (171) is 9mm in aperture, the linear distance between the center point of the first mounting hole and the central axis of the first channel (11) is 18mm, the second mounting hole (181) is 9mm in aperture, and the linear distance between the center point of the second mounting hole and the central axis of the first channel (11) is 16.5 mm; wherein a connecting line between a center point of the first mounting hole (171) and a center point of the second mounting hole (181) is 35mm in length.

9. The valve structure for a portable fire extinguisher according to claim 5, wherein: and a lifting handle (19) matched with the pressing handle (16) to drive the valve rod (142) is arranged below one side of the operating end of the pressing handle (16) on the side wall of the valve body (1).

10. The valve structure for a portable fire extinguisher according to claim 1, wherein: and an air inlet channel (10) communicated with the first channel (11) is arranged on the valve body (1).