CN220002816U

CN220002816U - Valve release device of dry powder fire extinguisher

Info

Publication number: CN220002816U
Application number: CN202321622874.1U
Authority: CN
Inventors: 杜孟军
Original assignee: Yuyao Jinrui Fire Equipment Co ltd
Current assignee: Yuyao Jinrui Fire Equipment Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-11-14
Anticipated expiration: 2033-06-25

Abstract

The utility model discloses a dry powder fire extinguisher valve release device, comprising: the fire extinguisher comprises a fire extinguisher body, a release sleeve, a mounting block and a first release groove, wherein the release sleeve is arranged at the top of the fire extinguisher body and is communicated with the top of the fire extinguisher body; the release sleeve is provided with a release sleeve, and the release sleeve is provided with a release mechanism which is arranged in the release sleeve; the manual pressing switch and the temperature trigger switch are arranged on the release sleeve, and the manual pressing switch and the temperature trigger switch are matched with the internal valve structure and the external valve structure, so that the manual accurate fire extinguishing and automatic range fire extinguishing process can be realized, and further, when people or no people take care, the emergency fire situation can be timely dealt with, the fire is controlled, and the personnel and property loss is reduced.

Description

Valve release device of dry powder fire extinguisher

Technical Field

The utility model relates to the technical field of fire extinguishers, in particular to a valve release device of a dry powder fire extinguisher.

Background

The fire extinguisher is a portable fire extinguishing tool. Chemical substances or fire extinguishing gas and solid are placed in the fire extinguisher to rescue and extinguish fire. Fire extinguishers are one of common fireproof facilities, are stored in public places or places where fire is likely to happen, are different in components filled in different types of fire extinguishing cylinders, are special for different types of fire alarms, and are various in types, functions and use environments. At present, the main stream fire extinguisher is basically opened by pressing a valve, so that fire extinguishing substances (such as dry powder, special cleaning gas for fire extinguishment and the like) in the fire extinguisher are sprayed out to extinguish the fire, but the conventional dry powder fire extinguisher is mostly driven to extinguish the fire manually, so that the fire is burst, and under the conditions that people do not take care of or not find the fire in time, the fire is difficult to control in time, and personnel damage and property damage are caused.

Disclosure of Invention

The utility model aims to provide a dry powder fire extinguisher valve release device, which can realize the manual accurate fire extinguishing and automatic range fire extinguishing process by matching a manual pressing switch and a temperature trigger switch through an inner valve structure and an outer valve structure, and further timely deal with sudden fire situations when people or no people take care, thereby controlling fire and reducing personnel and property loss.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a dry powder fire extinguisher valve release comprising: the fire extinguisher comprises a fire extinguisher body, a release sleeve, a mounting block and a first release groove, wherein the release sleeve is arranged at the top of the fire extinguisher body and is communicated with the top of the fire extinguisher body; the release sleeve is provided with a release sleeve, and the release sleeve is provided with a release mechanism which is arranged in the release sleeve; and the manual pressing switch and the temperature trigger switch are arranged on the release sleeve, the manual pressing switch is used for driving the inner valve structure to operate, and the temperature trigger switch is used for driving the outer valve structure to operate.

Preferably, the outer valve structure comprises a mounting plate, wherein the mounting plate is fixed at the top of the release sleeve, and a plurality of nozzles are annularly arranged on the mounting plate and used for spraying dry powder in a range; the device also comprises a plurality of movable transmission columns which are arranged on the mounting plate, and the top ends of the plurality of transmission columns penetrate through holes formed in the mounting plate and are fixedly provided with baffles; the valve blocks are fixed at the bottom ends of the transmission columns and are used for opening and closing the outer valve structure when the valve blocks are separated from and contacted with the mounting blocks; the outer wall of the transmission column between the mounting ring and the mounting disc is also sleeved with a tension spring which provides power for opening the outer valve structure; still including setting up spacing post structure on the mounting disc for the spacing of baffle.

Preferably, the limit post structure comprises a mounting seat fixed at the edge of the mounting disc and a supporting strip rotatably connected to the mounting seat, and the supporting strip can be in contact with the upper surface of the baffle.

Preferably, the inner valve structure comprises a second release groove arranged in the middle of the valve block, and the second release groove is communicated with the first release groove; the valve column is arranged in a through groove formed in the middle of the mounting plate, one end of the valve column extends to the outside of the release sleeve and is connected with a manual pressing switch, and the manual pressing switch is used for driving the valve column to operate; the other end of the valve rod is fixed with a sealing ring, the sealing ring can move in the second release groove, and when the valve rod moves upwards and the sealing ring is separated from the second release groove, dry powder can enter the release sleeve; and the spray pipe is arranged on the side wall of the release sleeve and is communicated with the release sleeve for spraying dry powder.

Preferably, the manual pressing switch comprises a support frame, wherein the support frame is fixed on the periphery of a mounting plate, and a mounting sleeve is vertically fixed in the middle of the support frame, a fixed plate is fixed on the lower part of the mounting sleeve, the manual pressing switch further comprises a mounting hole formed in the middle of the fixed plate, a movable column capable of moving up and down is mounted in the mounting hole, the bottom end of the movable column penetrates through the fixed plate and is connected with the top of the valve column, the top end of the movable column extends to the upper part of the mounting sleeve and is fixedly provided with the movable plate, and the movable plate can move in the mounting sleeve; the reset spring is arranged between the movable disc and the fixed disc and sleeved on the outer wall of the movable column and is used for resetting the movable column; the movable column is arranged on the side wall of the mounting sleeve, and the movable column is arranged on the side wall of the mounting sleeve.

Preferably, the pressing assembly comprises a connecting sleeve transversely arranged on the side wall of the mounting sleeve, and the connecting sleeve is communicated with the mounting sleeve through a connecting groove formed in the side wall of the mounting sleeve; the limiting block is fixed at the top of the movable disc, and a limiting groove is vertically formed in the limiting block; the connecting sleeve is arranged in the connecting sleeve, one end of the connecting sleeve penetrates through the connecting groove and is fixedly provided with a limiting rod, and the limiting rod can move in the limiting groove; the other end of the movable column is rotatably connected with a pin shaft arranged at the end part of the connecting sleeve, far away from the mounting sleeve, and when the pressing rod is pressed, the pressing rod is used for driving the movable column to move in the mounting sleeve.

Preferably, the temperature trigger switch comprises a fixed ring fixed on the upper part of the valve column and a movable ring slidably mounted on the valve column, and the movable ring is arranged below the fixed ring; the device also comprises a plurality of shape memory alloys arranged between the movable ring and the fixed ring, wherein the shape memory alloys are used for sensing temperature change and are adaptive to expansion and contraction; the valve is characterized by further comprising a wedge block structure arranged between the baffle and the valve column and used for limiting the baffle.

Preferably, the wedge block structure comprises a plurality of telescopic structures fixed on the periphery of the valve column and wedge block bodies fixed at the telescopic ends of the telescopic structures, the inclined planes of the wedge block bodies are matched with the inclined planes of the bottoms of the movable rings, and the bottoms of the wedge block bodies are in contact with the upper surfaces of the baffle plates.

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

according to the fire extinguisher, two driving modes of the fire extinguisher can be realized by controlling and driving the manual pressing switch or the temperature trigger switch, and one driving mode is manual driving; the inner valve structure can be operated by controlling and driving the manual pressing switch, and the mode is suitable for small-range accurate spraying fire extinguishment; and two are automatic driving: the temperature trigger switch can be adaptively changed according to the ambient temperature, and when the temperature reaches a change value, the temperature trigger switch automatically drives the outer valve structure to operate, so that fire can be automatically extinguished under the unmanned condition, and the fire can be timely controlled.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the disassembled structure of FIG. 1;

FIG. 3 is a schematic elevational view of the structure of FIG. 1;

FIG. 4 is a schematic cross-sectional view of A-A;

FIG. 5 is a schematic view of the enlarged partial structure of FIG. 4;

FIG. 6 is a schematic view of a partial enlarged structure of FIG. 5;

FIG. 7 is a schematic view of the installation of a spacing post structure;

fig. 8 is a partially enlarged schematic structural view of fig. 2.

In the figure: 1. a fire extinguisher body; 2. a spray pipe; 3. releasing the sleeve; 4. a support frame; 5. a mounting sleeve; 6. abutting against the strip; 7. a mounting base; 8. a mounting plate; 10. a baffle; 11. a mounting block; 12. a valve block; 13. a drive column; 14. a tension spring; 15. a mounting ring; 16. a seal ring; 17. a spool; 18. a fixing ring; 19. a shape memory alloy; 20. a movable ring; 21. a telescopic structure; 22. a wedge body; 23. a spout; 24. a first release groove; 25. a second release groove; 26. connecting sleeves; 27. a movable column; 28. a movable plate; 29. a fixed plate; 30. a return spring; 31. a limiting block; 32. a limit groove; 33. and (5) pressing the rod.

Detailed Description

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 8, the present utility model preferably provides the following technical solutions: a dry powder fire extinguisher valve release comprising: the fire extinguisher comprises a fire extinguisher body 1, a release sleeve 3 arranged at the top of the fire extinguisher body 1 and communicated with the fire extinguisher body, a mounting block 11 and a first release groove 24 arranged in the middle of the mounting block 11 are also fixedly wrapped at the lower part of the release sleeve 3, and the fire extinguisher body 1, the first release groove 24 and the release sleeve 3 are communicated in sequence; the release sleeve 3 is provided with a release sleeve, and the release sleeve is provided with a release sleeve and a release sleeve; and a manual push switch and a temperature trigger switch are arranged on the release sleeve 3, the manual push switch is used for driving the inner valve structure to operate, and the temperature trigger switch is used for driving the outer valve structure to operate.

Because the fire extinguisher body 1, the first release groove 24 and the release sleeve 3 are communicated in sequence, and as shown in figures 4, 5 and 6, a valve switch structure arranged in the release sleeve 3 consists of an inner valve structure and an outer valve structure, and a manual pressing switch and a temperature trigger switch arranged on the release sleeve 3 are matched, two driving modes of the fire extinguisher can be realized by controlling and driving the manual pressing switch or the temperature trigger switch, and one driving mode is manual driving; the inner valve structure can be operated by controlling and driving the manual pressing switch, and the mode is suitable for small-range accurate spraying fire extinguishment;

and two are automatic driving: the temperature trigger switch can adaptively change according to the ambient temperature, and automatically drives the outer valve structure to operate when the temperature reaches a change value, so that fire can be automatically extinguished under the unmanned condition, and the fire can be timely controlled in a mode of spraying and extinguishing in a large range;

this design, through interior valve structure and the outer valve structure that set up, manual press switch and the temperature trigger switch that the cooperation set up can realize artifical fire extinguishing and automatic fire extinguishing process, and then when someone or unmanned cares, in time deal with the emergent fire condition, in time control fire scene, reduction personnel and loss of property.

Further, the outer valve structure comprises a mounting plate 8, wherein the mounting plate 8 is fixed at the top of the release sleeve 3, and a plurality of nozzles 23 are annularly arranged on the mounting plate 8 and are used for range spraying of dry powder; the device also comprises a plurality of movable transmission columns 13 which are arranged on the mounting plate 8, and the top ends of the transmission columns 13 penetrate through holes formed in the mounting plate 8 and are fixedly provided with baffle plates 10; the valve blocks 12 are fixed at the bottom ends of the transmission columns 13, and are used for opening and closing the outer valve structure when the valve blocks 12 are separated from and contacted with the mounting blocks 11; the device also comprises a mounting ring 15 fixed on the outer wall of each transmission column 13, and a tension spring 14 is sleeved on the outer wall of the transmission column 13 between the mounting ring 15 and the mounting disc 8, and the tension spring 14 provides power for opening the outer valve structure; and also comprises a limit column structure arranged on the mounting disc 8 and used for limiting the baffle 10.

As shown in fig. 2 and 5, as one end of a plurality of transmission columns 13 passes through the through hole formed in the mounting plate 8 and is fixed with the baffle plate 10, and the valve block 12 fixed at the other end of the transmission columns contacts with the upper surface of the mounting block 11, and as shown in fig. 5, the effect of the limit column structure and the temperature trigger switch is combined, namely when the baffle plate 10 loses the limit effect of the limit column structure and the temperature trigger switch, the tension spring 14 can drive the transmission columns 13 at the moment, so that the valve block 12 is separated from the mounting block 11, namely when the transmission columns 13 move upwards, dry powder in the fire extinguisher body 1 can enter the release sleeve 3, and then the dry powder entering the release sleeve 3 is discharged from the nozzle 23 formed in the periphery of the mounting plate 8 in an annular manner, so that the dry powder spraying process is realized; under the action of the limit column structure, when the valve block 12 is connected with the installation block 11, the valve block 12 can seal and block the first release groove 24 formed in the middle of the installation block 11 at the moment so as to realize the closing process of the fire extinguisher body 1;

it should be noted that, here, the operation of the driving column 13 is powered by the tension spring 14, that is, the tension spring 14 is in an elongated state when the fire extinguisher is closed, so when the baffle 10 loses the limit action of the limit column structure and the temperature trigger switch, the tension spring 14 pulls the driving column 13 upwards, thereby realizing the opening process of the fire extinguisher; after spraying, the baffle plate 10 is pressed, the limit column structure and the temperature trigger switch are reset, namely the state of the fire extinguisher is restored to the state of fig. 1, and the fire extinguisher is closed.

Further, the limit post structure comprises a mounting seat 7 fixed at the edge of the mounting disc 8 and a supporting strip 6 rotatably connected to the mounting seat 7, and the supporting strip 6 can be in contact with the upper surface of the baffle 10.

As shown in fig. 7, in this embodiment, in an initial state of the fire extinguisher, i.e., in a daily placement state of the fire extinguisher, the limit post structure is separated from the baffle plate 10, and due to the structural characteristics of the temperature trigger switch, the temperature trigger switch can limit the baffle plate 10 at normal temperature, so that the fire extinguisher is in a closed state, and when the temperature is abnormal, the baffle plate 10 loses the limit of the temperature trigger switch, and can automatically go upwards, so as to realize an automatic spraying process of the fire extinguisher.

Further, the inner valve structure comprises a second release groove 25 arranged in the middle of the valve block 12, and the second release groove 25 is communicated with the first release groove 24; the valve column 17 is arranged in a through groove formed in the middle of the mounting plate 8, one end of the valve column 17 extends to the outside of the release sleeve 3 and is connected with a manual pressing switch, and the manual pressing switch is used for driving the valve column 17 to operate; the other end of the valve rod is fixed with a sealing ring 16, the sealing ring 16 can move in the second release groove 25, and when the valve rod 17 moves upwards, the sealing ring 16 is separated from the second release groove 25, and dry powder can enter the release sleeve 3; and the spray pipe 2 is arranged on the side wall of the release sleeve 3, and the spray pipe 2 is communicated with the release sleeve 3 and is used for spraying dry powder.

As shown in fig. 5, by providing the spool 17, the spool 17 can move up and down on the mounting plate 8, and the sealing ring 16 fixed at the bottom of the spool 17 can move inside the second release groove 25, so that when the spool 17 moves up and down by manually pressing the switch, the sealing ring 16 can be separated from or contacted with the second release groove 25, thereby realizing the opening and closing process of the fire extinguisher.

Further, the manual pressing switch comprises a support frame 4, wherein the support frame 4 is fixed on the periphery of the mounting plate 8, a mounting sleeve 5 is vertically fixed in the middle of the support frame 4, a fixed plate 29 is fixed at the lower part of the mounting sleeve 5, a mounting hole is formed in the middle of the fixed plate 29, a movable column 27 capable of moving up and down is arranged in the mounting hole, the bottom end of the movable column 27 penetrates through the fixed plate 29 and is connected with the top of the valve column 17, the top end of the movable column extends to the upper part of the mounting sleeve 5 and is fixedly provided with a movable plate 28, and the movable plate 28 can move in the mounting sleeve 5; the reset spring 30 is arranged between the movable disc 28 and the fixed disc 29 and sleeved on the outer wall of the movable column 27 and is used for resetting the movable column 27; and also includes a pressing assembly provided on a side wall of the mounting sleeve 5 for driving the movable column 27 to move inside the mounting sleeve 5.

As shown in fig. 1, 2 and 8, since the fixed disc 29 is fixed at the lower part of the installation sleeve 5, and the movable column 27 arranged in the middle of the installation sleeve 5 has one end connected with the top end of the valve column 17, the other end extends to the upper part of the installation sleeve 5 and is fixed with the movable disc 28, and the movable disc 28 can move inside the installation sleeve 5, and the outer wall of the movable column 27 between the movable disc 28 and the fixed disc 29 is also sleeved with the reset spring 30 for resetting the movable column 27, when the pressing assembly on the side wall of the installation sleeve 5 operates, the movable column 27 can be driven to move in a limiting manner inside the installation sleeve 5, and then the valve column 17 is driven to move up and down inside the installation disc 8, so as to realize the opening and closing of the internal valve structure.

Further, the pressing assembly comprises a connecting sleeve 26 transversely arranged on the side wall of the mounting sleeve 5, and the connecting sleeve 26 is communicated with the mounting sleeve 5 through a connecting groove formed in the side wall of the mounting sleeve 5; the limiting block 31 is fixed at the top of the movable disc 28, and a limiting groove 32 is vertically formed in the limiting block 31; the device further comprises a pressure lever 33 arranged in the connecting sleeve 26, one end of the pressure lever 33 penetrates through the connecting groove and is fixedly provided with a limit rod, and the limit rod can move in the limit groove 32; the other end of the movable column 27 is rotatably connected with a pin shaft arranged at the end of the connecting sleeve 26 far away from the mounting sleeve 5, and when the pressing rod 33 is pressed, the pressing rod 33 is used for driving the movable column 27 to move in the mounting sleeve 5.

Because the pressure bar 33 inside the connecting sleeve 26 is shown in fig. 8, one end of the pressure bar 33 passes through the connecting groove and is connected with the limiting block 31, the limiting rod fixed at the end part of the pressure bar can move inside the limiting groove 32 formed inside the limiting block 31, the other end of the pressure bar is rotationally connected with the pin shaft at the end part of the connecting sleeve 26, and the limiting groove 32 is vertically distributed, when the pressure bar 33 is pressed, the pressure bar 33 and the pin shaft can deflect by taking the pin shaft as the axis, and due to the limiting effect of the limiting groove 32, the pressure bar 33 can push the movable disc 28 to move inside the mounting sleeve 5 and further drag the movable column 27 to perform limiting operation.

Further, the temperature-triggered switch includes a fixed ring 18 fixed to the upper portion of the spool 17, and a movable ring 20 slidably mounted on the spool 17, with the movable ring 20 being disposed below the fixed ring 18; the device also comprises a plurality of shape memory alloys 19 arranged between the movable ring 20 and the fixed ring 18, wherein the shape memory alloys 19 are used for sensing temperature change and are flexible; and also includes a wedge structure disposed between the flapper 10 and the spool 17 for limiting the flapper 10.

Here, the shape memory alloy 19 principle is: the shape memory alloy 19 is a material which has a shape memory effect through thermoelasticity, martensitic transformation and inversion thereof, and is composed of more than two metal elements, the shape memory alloy 19 is the material with the best shape memory performance in the shape memory material, a spring made of the memory alloy is taken as an example, the spring is placed in hot water, the length of the spring is immediately prolonged, and the spring is placed in cold water again, and the spring can immediately restore to the original shape;

because the fixed ring 18 is fixed on the valve column 17, the movable ring 20 is slidably arranged on the valve column 17, and a plurality of shape memory alloys 19 are arranged between the fixed ring and the valve column, and in addition, the wedge block structure can limit the baffle 10 in an initial state, so that the baffle 10 is attached to the mounting disc 8 at normal temperature, and the nozzle 23 arranged on the mounting disc 8 is sealed, so that the fire extinguisher is closed;

as shown in fig. 5 and 8, when the ambient temperature reaches the limit value of the shape memory alloy 19, the shape memory alloy 19 can be prolonged by the characteristics of the shape memory alloy 19, so that the movable ring 20 is pushed downwards to drive the wedge structure to operate, so that the baffle plate 10 loses the limit of the wedge structure, and the fire extinguisher is opened.

Further, the wedge structure comprises a plurality of telescopic structures 21 fixed on the periphery of the valve column 17 and a wedge body 22 fixed on the telescopic end of each telescopic structure 21, wherein the inclined surface of the wedge body 22 is matched with the inclined surface of the bottom of the movable ring 20, and the bottom of the wedge body is in contact with the upper surface of the baffle 10.

As shown in fig. 8, the telescopic structure is in the prior art, and consists of a telescopic sleeve fixed on the outer wall of the valve column 17, a telescopic rod arranged inside the telescopic sleeve, and a spring arranged between the telescopic sleeve and the telescopic rod;

since the wedge body 22 is fixed at the telescopic end of the telescopic structure 21, and in the initial state, that is, the bottom of the wedge body is in contact with the upper surface of the baffle 10, so as to limit the baffle 10, the telescopic structure 21 is fixed at the upper part of the valve column 17, and the inclined plane of the wedge body 22 is matched with the inclined plane of the movable ring 20, as shown in fig. 5, when the movable ring 20 moves down, a plurality of telescopic structures 21 can be pushed to retract, so that the wedge body 22 is separated from the baffle 10, and the upward moving process of the baffle 10 is realized.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The detachable mounting mode is various, for example, the detachable mounting mode can be matched with the buckle through plugging, for example, the detachable mounting mode can be realized through a bolt connection mode, and the like.

The conception, specific structure, and technical effects produced by the present utility model are clearly and completely described above in connection with the embodiments and the drawings so as to fully understand the objects, features, and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation.

The foregoing embodiments are provided for further explanation of the present utility model and are not to be construed as limiting the scope of the present utility model, and some insubstantial modifications and variations of the present utility model, which are within the scope of the utility model, will be suggested to those skilled in the art in light of the foregoing teachings.

Claims

1. The utility model provides a dry powder fire extinguisher valve release which characterized in that includes:

the fire extinguisher comprises a fire extinguisher body (1), a release sleeve (3) arranged at the top of the fire extinguisher body (1) and communicated with the fire extinguisher body, a mounting block (11) and a first release groove (24) arranged in the middle of the mounting block (11) are fixedly wrapped at the lower part of the release sleeve (3), and the fire extinguisher body (1), the first release groove (24) and the release sleeve (3) are communicated in sequence;

the release sleeve (3) is arranged on the inner side of the shell, and the release sleeve is provided with a release mechanism and a release mechanism;

and a manual pressing switch and a temperature trigger switch which are arranged on the release sleeve (3), wherein the manual pressing switch is used for driving the inner valve structure to operate, and the temperature trigger switch is used for driving the outer valve structure to operate.

2. The dry powder fire extinguisher valve release apparatus of claim 1, wherein:

the outer valve structure comprises a mounting disc (8), wherein the mounting disc (8) is fixed at the top of the release sleeve (3), and a plurality of nozzles (23) are annularly arranged on the mounting disc (8) and are used for spraying dry powder in a range;

the device also comprises a plurality of movable transmission columns (13) which are arranged on the mounting plate (8), wherein the top ends of the plurality of transmission columns (13) penetrate through holes formed in the mounting plate (8) and are fixedly provided with baffle plates (10);

the valve blocks (12) are fixed at the bottom ends of the plurality of transmission columns (13), and the valve blocks (12) are used for opening and closing the outer valve structure when being separated from and contacted with the mounting blocks (11);

the automatic valve structure is characterized by further comprising a mounting ring (15) fixed on the outer wall of each transmission column (13), wherein a tension spring (14) is sleeved on the outer wall of the transmission column (13) between the mounting ring (15) and the mounting disc (8), and the tension spring (14) provides power for opening the outer valve structure;

the device also comprises a limit column structure arranged on the mounting disc (8) and used for limiting the baffle (10).

3. The dry powder fire extinguisher valve release apparatus of claim 2, wherein:

the limiting column structure comprises a mounting seat (7) fixed at the edge of the mounting disc (8), and a supporting strip (6) rotatably connected to the mounting seat (7), wherein the supporting strip (6) can be in contact with the upper surface of the baffle plate (10).

4. The dry powder fire extinguisher valve release apparatus of claim 2, wherein:

the inner valve structure comprises a second release groove (25) formed in the middle of the valve block (12), and the second release groove (25) is communicated with the first release groove (24);

the valve rod (17) is arranged in a through groove formed in the middle of the mounting disc (8), one end of the valve rod (17) extends to the outside of the release sleeve (3) and is connected with a manual pressing switch, and the manual pressing switch is used for driving the valve rod (17) to operate;

the other end of the valve is fixedly provided with a sealing ring (16), the sealing ring (16) can move in the second release groove (25), and when the valve column (17) moves upwards, the sealing ring (16) is separated from the second release groove (25), and dry powder can enter the release sleeve (3);

and the spray pipe (2) is arranged on the side wall of the release sleeve (3), and the spray pipe (2) is communicated with the release sleeve (3) and is used for spraying dry powder.

5. The dry powder fire extinguisher valve release apparatus of claim 1, wherein:

the manual pressing switch comprises a support frame (4), wherein the support frame (4) is fixed on the periphery of a mounting disc (8), a mounting sleeve (5) is vertically fixed in the middle of the support frame (4), a fixed disc (29) is fixed on the lower portion of the mounting sleeve (5), a mounting hole is formed in the middle of the fixed disc (29), a movable column (27) capable of moving up and down is mounted in the mounting hole, the bottom end of the movable column (27) penetrates through the fixed disc (29) and is connected with the top of a valve column (17), the top end of the movable column extends to the upper portion of the mounting sleeve (5) and is fixedly provided with a movable disc (28), and the movable disc (28) can move in the mounting sleeve (5);

the reset spring (30) is arranged between the movable disc (28) and the fixed disc (29) and sleeved on the outer wall of the movable column (27) and is used for resetting the movable column (27);

the movable column (27) is driven to move in the mounting sleeve (5) by the pressing assembly arranged on the side wall of the mounting sleeve (5).

6. The dry powder fire extinguisher valve release apparatus of claim 5, wherein:

the pressing assembly comprises a connecting sleeve (26) transversely arranged on the side wall of the mounting sleeve (5), and the connecting sleeve (26) is communicated with the mounting sleeve (5) through a connecting groove formed in the side wall of the mounting sleeve (5);

the limiting block (31) is fixed at the top of the movable disc (28), and a limiting groove (32) is vertically formed in the limiting block (31);

the device further comprises a pressure rod (33) arranged in the connecting sleeve (26), one end of the pressure rod (33) penetrates through the connecting groove and is fixedly provided with a limit rod, and the limit rod can move in the limit groove (32);

the other end of the movable column (27) is rotatably connected with a pin shaft arranged at the end part of the connecting sleeve (26) far away from the mounting sleeve (5), and when the pressing rod (33) is pressed, the pressing rod (33) is used for driving the movable column (27) to move in the mounting sleeve (5).

7. The dry powder fire extinguisher valve release apparatus of claim 4, wherein:

the temperature trigger switch comprises a fixed ring (18) fixed on the upper part of the valve column (17) and a movable ring (20) which is slidably arranged on the valve column (17), wherein the movable ring (20) is arranged below the fixed ring (18);

the device further comprises a plurality of shape memory alloys (19) arranged between the movable ring (20) and the fixed ring (18), wherein the shape memory alloys (19) are used for sensing temperature change and are adaptive to stretch and retract;

the valve further comprises a wedge block structure arranged between the baffle (10) and the valve column (17) and used for limiting the baffle (10).

8. The dry powder fire extinguisher valve release apparatus of claim 7, wherein:

the wedge block structure comprises a plurality of telescopic structures (21) fixed on the periphery of the valve column (17), and wedge block bodies (22) fixed at the telescopic ends of each telescopic structure (21), wherein the inclined planes of the wedge block bodies (22) are matched with the inclined planes of the bottoms of the movable rings (20), and the bottoms of the wedge block bodies are in contact with the upper surface of the baffle plate (10).