CN220706518U - Mechanical fire-retarding valve for chemical safety storage cabinet - Google Patents

Abstract

The utility model relates to the technical field of chemical safety storage cabinets, in particular to a mechanical fire-retarding valve for a chemical safety storage cabinet, which comprises a valve body, wherein a butterfly valve core is arranged in an inner cavity of the valve body, the upper end of the butterfly valve core is connected with a second bolt in a threaded manner, the upper end of the second bolt penetrates through the valve body and is connected with a fixing plate in a threaded manner, the second bolt is rotationally connected with the valve body, one side of the upper end of the fixing plate is provided with a fuse link, the fuse link is connected with the fixing plate in a threaded manner through a first bolt and a nut, the upper end of the valve body is connected with a fixing sleeve, and one side of the lower end of the fuse link is arranged at the upper end of the fixing sleeve in a threaded manner through a third bolt.

Description

Mechanical fire-retarding valve for chemical safety storage cabinet

Technical Field

The utility model relates to the technical field of chemical safety storage cabinets, in particular to a mechanical fire-retarding valve for a chemical safety storage cabinet.

Background

The chemical storage cabinet is a cabinet for storing various chemicals, the existing chemical storage cabinets are all provided with ventilation-proof air holes, the ventilation-proof air holes are designed for realizing ventilation and gas emission, but the ventilation-proof air holes possibly become a flame propagation channel, in case of fire, flames and combustion objects can enter the inside of the safety cabinet through the air holes, so that the fire is expanded and the risk of leakage of the chemicals is increased, the air holes possibly allow smoke to enter or escape the safety cabinet, so that the possibility of spreading the smoke in a laboratory or a working area is increased, the spreading of the smoke possibly hinders people from evacuating and increases poisoning risks, the existence of the air holes possibly weakens the structural strength and the fire resistance of the safety cabinet to a certain extent, the resistance of the safety cabinet is reduced under the condition of fire, the spreading of the fire is accelerated, and part of the chemical storage cabinet is designed to contain the fire, but the existence of the air holes possibly affects the function of a fireproof door, in case of fire the fire can be weakened, the fire spreading and the smoke is caused to spread and the smoke is required to be regularly cleaned and maintained, so that the air holes are normally kept, otherwise, the air holes possibly blocked, and the ventilation-proof air holes possibly and the smoke-proof air holes are blocked, and the smoke-proof air holes are possibly blocked.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides the mechanical fire-retarding valve for the chemical safety storage cabinet, which has the advantages of effectively closing the ventilation holes of the safety cabinet automatically by machinery when a fire disaster occurs, effectively protecting chemicals in the safety cabinet and the like.

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

the utility model provides a mechanical type fire-retardant valve for chemical safety storage cabinet, includes the valve body, the inner chamber of valve body is provided with the butterfly case, the upper end spiro union of butterfly case has the second bolt, the upper end of second bolt runs through valve body and spiro union fixed plate, rotate between second bolt and the valve body and be connected, upper end one side of fixed plate is provided with the fuse, through first bolt and nut looks spiro union between fuse and the fixed plate, the upper end of valve body is connected with fixed cover, lower extreme one side of fuse sets up the upper end at fixed cover, the fuse passes through the third bolt and is screwed with fixed cover inner chamber looks, the lower extreme of fixed plate and the outside of valve body all are provided with the mounting hole, torsion spring has been cup jointed in the outside of second bolt, torsion spring's upper and lower both ends are inserted respectively at the mounting hole inner chamber in fixed plate lower extreme and the valve body outside.

Preferably, grooves are symmetrically formed in the outer side of the valve body, bearings are mounted in inner cavities of the grooves, one of the bearings is mounted on the outer side of the second bolt, a fixing bolt is screwed at the lower end of the butterfly valve core, and the fixing bolt is connected with the other bearing in a rotating mode.

Preferably, the inner cavity of the groove is provided with an elastic check ring, and one end of the elastic check ring is attached to the bearing.

Preferably, the outer sides of the first bolt, the second bolt and the third bolt are sleeved with flat washers.

Preferably, the valve body, the butterfly valve core, the first bolt, the fixing plate, the second bolt, the third bolt and the fixing bolt are all made of 304 stainless steel.

The mechanical fire-retarding valve for the chemical safety storage cabinet has the beneficial effects that:

1. preventing flame propagation: the mechanical automatic fire-retarding valve can quickly close the air holes when a fire disaster occurs, prevent flames from entering the safety cabinet through the air holes, effectively prevent the spread of fire, and reduce the risk of fire accidents;

2. blocking smoke diffusion: the valve also has the functions of blocking the diffusion of the smoke between the safety cabinet and the surrounding environment, and can limit the propagation range of the smoke by closing the air holes, so that the influence on the working area and the evacuation of people is reduced;

3. the personnel safety is protected: the mechanical automatic fire-retarding valve aims at ensuring personnel in the safety cabinet to be protected from flame and harmful smoke, and provides a protective barrier, so that the risk of exposing the personnel to fire environment is reduced, and the escape and self-rescue opportunities are increased;

4. improve the fire prevention ability of safety cabinet: the mechanical automatic fire-retarding valve is arranged, so that the integral fireproof performance of the safety cabinet can be enhanced, and the valve is used as a fireproof barrier, provides an additional protective layer and is beneficial to slowing down the development of fire and controlling the fire situation.

Drawings

FIG. 1 is a schematic view of the overall perspective of a mechanical fire-blocking valve for a chemical safety storage cabinet according to the present utility model;

FIG. 2 is a schematic diagram of the overall cross-sectional structure of a mechanical fire-blocking valve for a chemical safety storage cabinet according to the present utility model;

FIG. 3 is a schematic diagram of a mechanical fire-blocking valve for a chemical safety storage cabinet in a front-side view;

fig. 4 is a schematic diagram of the overall top view structure of a mechanical fire-blocking valve for a chemical safety storage cabinet according to the present utility model.

In the figure: the butterfly valve comprises a valve body 1, a butterfly valve core 2, a flat gasket 3, a first bolt 4, a fuse link 5, a fixed plate 6, a bearing 7, a circlip 8, a nut 9, a second bolt 10, a torsion spring 11, a fixed sleeve 12, a third bolt 13 and a fixed bolt 14.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, a mechanical fire-retarding valve for a chemical safety storage cabinet comprises a valve body 1, wherein a butterfly valve core 2 is arranged in an inner cavity of the valve body 1, a second bolt 10 is connected to the upper end of the butterfly valve core 2 in a screwed mode, grooves are symmetrically formed in the outer side of the valve body 1, bearings 7 are arranged in the inner cavities of the grooves, one of the bearings 7 is arranged on the outer side of the second bolt 10, a fixing bolt 14 is connected to the lower end of the butterfly valve core 2 in a screwed mode, the fixing bolt 14 is connected with the other bearing 7 in a rotating mode, the fixing bolt 14 is connected with the butterfly valve core 2, stability of the butterfly valve core 2 in rotation is improved conveniently, the using effect of the butterfly valve core is improved, one end of the circlip 8 is attached to the bearing 7, through the design of the bearing 7, rotation flexibility of the second bolt 10 and the fixing bolt 14 is improved, the using effect of the valve is improved, the bearing 7 is blocked through the circlip 8, the bearing 7 is prevented from falling off, and the protection effect is effectively achieved.

The upper end of the second bolt 10 penetrates through the valve body 1 and is in threaded connection with the fixed plate 6, the second bolt 10 is in rotary connection with the valve body 1, a fuse link 5 is arranged on one side of the upper end of the fixed plate 6, the fuse link 5 is in threaded connection with the fixed plate 6 through the first bolt 4 and the nut 9, the upper end of the valve body 1 is connected with a fixed sleeve 12, one side of the lower end of the fuse link 5 is arranged at the upper end of the fixed sleeve 12, the fuse link 5 is in threaded connection with the inner cavity of the fixed sleeve 12 through a third bolt 13, mounting holes are respectively arranged on the lower end of the fixed plate 6 and the outer side of the valve body 1, a torsion spring 11 is sleeved on the outer side of the second bolt 10, the upper and lower both ends of torsion spring 11 are inserted respectively in the mounting hole inner chamber in fixed plate 6 lower extreme and the valve body 1 outside, flat washer 3 has all been cup jointed in the outside of first bolt 4, second bolt 10 and third bolt 13, improve the tightness of first bolt 4 and second bolt 10 to fixed plate 6 spiro union and second bolt 10 and third bolt 13 to fixed plate 6 and fuse link 5 spiro union tightness, improve the result of use, valve body 1, butterfly case 2, first bolt 4, fixed plate 6, second bolt 10, third bolt 13 and fixing bolt 14 all adopt 304 stainless steel, it is convenient high temperature resistant, be convenient for improve life.

Working principle: when the butterfly valve is used, the bearing 7 and the elastic retainer ring 8 are sequentially arranged in the groove of the valve body 1, the butterfly valve core 2 is arranged in the valve body 1, the fixed bolt 14 is arranged in one groove at the bottom of the valve body 1 to fix the butterfly valve core 2, the torsion spring 11 is arranged in the mounting hole at the top of the valve body 1, the second bolt 10 which is in threaded connection with the fixed plate 6 in advance is inserted into the outer side of the torsion spring 11, the upper end of the butterfly valve core 2 is in threaded connection with the second bolt 10, one end of the torsion spring 11 is inserted into the mounting hole at the lower end of the fixed plate 6, the fixed plate 6 is rotated to a 90-degree position, the fuse link 5 is in threaded connection with the fixed plate 6 through the first bolt 4 and the nut 9, the fuse 5 is installed after being screwed with the fixed sleeve 12 through the third bolt 13, the assembled valve is screwed into the chemical safety storage cabinet to enter and exit the ventilation vent through the threads, when the room temperature rises to 70 ℃ after a fire disaster occurs, the fuse 5 on the valve body 1 is disconnected from the middle under the influence of the temperature, the torsion spring 11 is automatically reset due to the torsion force, and then the fixed plate 6 is driven to rotate, and then the fixed plate 6 drives the butterfly valve core 2 to rotate 90 degrees to be closed through the second bolt 10, so that open fire is effectively prevented from entering the cabinet body, chemicals in the chemical safety storage cabinet are protected conveniently, the fire disaster is prevented from spreading into the chemical safety storage cabinet conveniently, the fire disaster is expanded, the risk of chemical leakage is increased, and the like.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. The utility model provides a mechanical type fire-retardant valve for chemical safety storage cabinet, includes valve body (1), its characterized in that, the inner chamber of valve body (1) is provided with butterfly case (2), the upper end spiro union of butterfly case (2) has second bolt (10), the upper end of second bolt (10) runs through valve body (1) and spiro union fixed plate (6), rotate between second bolt (10) and valve body (1) and be connected, upper end one side of fixed plate (6) is provided with fuse link (5), through first bolt (4) and nut (9) looks spiro union between fuse link (5) and fixed plate (6), the upper end of valve body (1) is connected with fixed cover (12), lower extreme one side of fuse link (5) sets up the upper end at fixed cover (12), the upper end of fuse link (5) through third bolt (13) and fixed cover (12) inner chamber looks spiro union, the outside of fixed plate (6) and valve body (1) are provided with fuse link (5), the both ends of torsion spring (11) are all connected with in the outside of the inner chamber (11) of valve body (1).

2. The mechanical fire-retarding valve for the chemical safety storage cabinet according to claim 1, wherein grooves are symmetrically formed in the outer side of the valve body (1), bearings (7) are installed in inner cavities of the grooves, one of the bearings (7) is installed on the outer side of the second bolt (10), a fixing bolt (14) is screwed to the lower end of the butterfly valve core (2), and the fixing bolt (14) is rotatably connected with the other bearing (7).

3. A mechanical fire-blocking valve for a chemical safety storage cabinet according to claim 2, characterized in that the inner cavity of the groove is provided with a circlip (8), and one end of the circlip (8) is attached to the bearing (7).

4. A mechanical fire-blocking valve for a chemical safety storage cabinet according to claim 1, characterized in that the outer sides of the first bolt (4), the second bolt (10) and the third bolt (13) are all sleeved with plain washers (3).

5. The mechanical fire-retarding valve for a chemical safety storage cabinet according to claim 2, wherein the valve body (1), the butterfly valve core (2), the first bolt (4), the fixing plate (6), the second bolt (10), the third bolt (13) and the fixing bolt (14) are all made of 304 stainless steel.