CN213839728U

CN213839728U - Fire-proof valve

Info

Publication number: CN213839728U
Application number: CN202022163400.8U
Authority: CN
Inventors: 罗静
Original assignee: Royal General Purpose Hvac Technology Wuhan Co ltd
Current assignee: Royal General Purpose Hvac Technology Wuhan Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-07-30
Anticipated expiration: 2030-09-28

Abstract

The utility model provides a fire-proof valve, which comprises a valve body; wherein the valve body top is equipped with the automatically regulated box, be equipped with the median septum in the middle of the valve body is inside, automatically regulated box bottom is equipped with the blade axle, the automatically regulated box outside is equipped with the visor, the protection caping portion is equipped with manual handle, manual handle one side is equipped with the fuse fixture block, fuse fixture block below fixedly connected with temperature fuse strip, the inside spring fixed block that is equipped with of blade axle top automatically regulated box, spring fixed block surface is equipped with clockwork spring, the outside fixedly connected with blade of blade axle, the blade left and right sides is equipped with high temperature resistant rubber piece, be equipped with the installation plug angle on the valve body. The utility model discloses simple structure, the usage is extensive, and the practicality is strong, has good development prospect.

Description

Fire-proof valve

Technical Field

The utility model relates to a fire protection device technical field specifically is a fire prevention valve.

Background

According to the requirement of air leakage quantity specified in national standard fire prevention valve for building ventilation and smoke exhaust system GB 15930-2007: on one hand, the valve is required to achieve high-requirement sealing performance at normal temperature and in a blade closing state; on the other hand, the valve also achieves high-demand sealing performance at high temperatures (70 ℃ to 1000 ℃) and in the closed state of the blade. However, since the vanes are thin and long due to the rise of temperature, they generally expand by about 4mm in the longitudinal direction, and if the space of the vanes, particularly the longitudinal direction, is obstructed during expansion, the vanes are bent and deformed in the longitudinal direction, and a gap is formed between the vanes during closing, so that a large air leakage amount is generated, and the sealing performance of the valve is not required. In order to solve the problem, the existing valve structurally adopts a U-shaped sealing elastic sheet (about 0.2mm thick) added between two ends of a blade and a frame plate or other parts, the blade is in surface contact with the elastic sheet at normal temperature to meet the sealing requirement, the blade expands when heated at high temperature to extrude the elastic sheet, the elastic sheet contracts and gives way under pressure, two ends of the blade freely extend and cannot deform in the length direction, and the end part of the blade is still in surface contact with the elastic sheet to achieve the sealing effect. However, the structure is characterized in that when the valve is vertically placed, the blade can move downwards under the action of gravity, the elastic sheet below the blade can be crushed to lose the effect, in order to prevent the blade from moving downwards, at present, a groove is basically processed between the elastic sheet and the copper sleeve on the blade rotating shaft, a clamp spring is installed, the clamp spring prevents the blade from moving in a string mode at normal temperature, when the high-temperature blade expands, the clamp spring is squeezed off when the expansion force of the blade reaches a certain degree, the blade can extend under the action of no obstacle, the end part of the blade still contacts with the elastic sheet, and the sealing performance of the valve is ensured.

However, the sealing structure between the blade and the fixed frame plate of the fire-proof valve in the prior art is complex, the processing cost is high, the clamp spring is easy to fall off due to improper installation, the sealing effect is influenced, the resistance of the clamp spring needs to be overcome in the extension process of the blade, and the deformation is easy to occur to influence the sealing effect. There is therefore a need for a fire damper that is more convenient to use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a fire prevention valve has solved the above-mentioned structure complicacy, the processing cost is high, sealed effect subalternation problem.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a fire prevention valve comprises a valve body; the improved automatic temperature-regulating valve is characterized in that an automatic regulating box is arranged above the valve body, a middle partition plate is arranged in the middle of the inside of the valve body, a blade shaft is arranged at the bottom of the automatic regulating box, a protective cover is arranged outside the automatic regulating box, a manual handle is arranged at the top of the protective cover, a fuse block is arranged on one side of the manual handle, a temperature fusing strip is fixedly connected below the fuse block, a spring fixing block is arranged inside the automatic regulating box above the blade shaft, a clockwork spring is arranged on the surface of the spring fixing block, blades are fixedly connected to the outside of the blade shaft, high-temperature-resistant rubber blocks are arranged on the left side and the right side of each blade, and an installation inserting angle is formed in the valve body.

Preferably, the lower part of the manual handle is fixedly connected with the top of the blade shaft.

Preferably, the number of the installation inserting angles is four, and the installation inserting angles are evenly distributed at four corners of the valve body.

Preferably, the bottom of the blade shaft is fixedly connected with a fixing block.

Preferably, the blade shaft is rotatably connected with the valve body, and the blade shaft is rotatably connected with the automatic adjusting box.

Preferably, the spring fixing block stabilizes the clockwork spring in the middle through the temperature fusing strip on the side.

Preferably, the high temperature resistant rubber piece is equipped with four evenly distributed inside the valve body.

(III) advantageous effects

The utility model aims to solve the problems of complex structure, high processing cost, poor sealing performance and the like in the use process of the prior fire-proof valve, and provides a fire-proof valve, wherein the blade shaft is more simple and convenient to rotate when a fire disaster happens easily and effectively avoids the problems of smoke and toxic substance leakage and the like caused by the fact that the blade is not closed in place through the arrangement of a clockwork spring, through the matching of a temperature fusing bar, a spring fixing block and the clockwork spring, when the temperature fusing bar is burnt, the clockwork spring loses the fixing function, the blade shaft drives the blade to be automatically closed through the rotation force, so that a valve body is closed, the sealing effect is better through high-temperature resistant rubber blocks at the two sides of the blade, the performance of isolating the smoke is greatly improved, the blade shaft is reset by rotating a manual handle after the fire disaster is over through the manual handle, the temperature fusing bar and the clockwork spring can be continuously used after being replaced, the device structure is simpler and more convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic top structure diagram of the present invention.

Fig. 3 is a schematic view of the structure of the clockwork spring of the present invention.

Fig. 4 is a schematic view of the internal structure of the automatic adjusting box of the present invention.

In FIGS. 1-4: the automatic temperature control valve comprises a valve body-1, an automatic adjusting box-2, a middle partition plate-3, a blade shaft-4, a fixing block-401, a blade-5, a high temperature resistant rubber block-6, an installation inserting angle-7, a protective cover-8, a manual handle-9, a spring fixing block-10, a fuse clamping block-11, a temperature fusing bar-12 and a clockwork spring-13.

Detailed Description

The embodiment of the utility model provides a fire prevention valve, as shown in fig. 1-2, including a valve body 1; an automatic adjusting box 2 is arranged above a valve body 1, a middle partition plate 3 is arranged in the middle of the inside of the valve body 1, a blade shaft 4 is arranged at the bottom of the automatic adjusting box 2, a protective cover 8 is arranged outside the automatic adjusting box 2, a manual handle 9 is arranged at the top of the protective cover 8, a fuse clamping block 11 is arranged on one side of the manual handle 9, a spring fixing block 10 is fixedly connected below the fuse clamping block 11, a spring fixing block 10 is arranged inside the automatic adjusting box 2 above the blade shaft 4, a clockwork spring 13 is arranged on the surface of the spring fixing block 10, a blade 5 is fixedly connected to the outside of the blade shaft 4, high-temperature-resistant rubber blocks 6 are arranged on the left side and the right side of the blade 5, and an installation inserting angle 7 is arranged on the valve body 1; the lower part of the manual handle 9 is fixedly connected with the top of the blade shaft 4, so that the blade shaft 4 can drive the blades to rotate freely, and the use is convenient; the number of the installation inserting angles 7 is four, and the installation inserting angles 7 are uniformly distributed at four corners of the valve body, so that the valve body 1 is more convenient to install; the bottom of the blade shaft 4 is fixedly connected with a fixed block 401, so that the blade shaft 4 can be automatically closed through the rotation force after the spring 13 loses the fixing effect, the valve body 1 is closed, and the sealing performance is greatly improved; the blade shaft 4 is rotatably connected with the valve body 1, and the blade shaft 4 is rotatably connected with the automatic adjusting box 2, so that the blade shaft 4 can effectively drive the blades 5 to be closed when a fire disaster happens, and the resistance of a spring or the valve body 1 cannot be applied; the spring fixing block 10 stabilizes the clockwork spring in the middle through the temperature fusing bar 12 on the side, the blades are opened and closed through the fixing action of the clockwork spring 13 when no fire occurs, and the blade shaft can normally work through high-temperature burning 12 in the case of fire; high temperature resistant rubber piece 6 is equipped with four evenly distributed inside valve body 1 for the closed time of blade 5 seals the effect better, effectively avoids toxic gas, smog to leak, and the security performance promotes greatly.

The specific principle is as follows: firstly, come temporarily at the conflagration, burn out temperature fuse strip 12 through high temperature, clockwork spring 13 drives blade axle 4 and rotates, thereby make blade 5 closed, make valve body 1 seal, and make blade 5 in time stop when rotating the assigned position through high temperature resistant rubber block 6, and the seamless connection between blade 5 and the high temperature resistant rubber block 6, can effectively separate smog and toxic substance when making valve body 1 seal and leak, effectively avoid personnel's loss, after the conflagration, through rotating manual handle 9, make blade axle 4 drive blade 5 return to initial position, thereby played the reducing device connecting block, the connecting piece problem, make the device structure more simple.

In conclusion, the device is provided with the spiral spring 13, so that the blade shaft 4 rotates more simply and conveniently when a fire disaster occurs, the problems of smoke and toxic substance leakage and the like caused by the fact that the blades 5 are not closed in place are effectively solved, the temperature fusing strips 12 are adopted, the spring fixing blocks 10 are matched with the spiral spring 13, after the temperature fusing strips 12 are burnt, the spiral spring 13 loses the fixing effect, the blade shaft 4 drives the blades 5 to be automatically closed through the rotation force, the valve body 1 is sealed, the sealing effect is better through the high-temperature-resistant rubber blocks 6 on the two sides of the blades 5, the performance of isolating smoke is greatly improved, the manual handle 9 is rotated to reset the blade shaft 4 after the fire disaster is over, the temperature fusing strips 10 and the spiral spring 13 are replaced, and the device can be used continuously, and the device is simpler in structure and is convenient.

Claims

1. A fire damper, comprising a valve body (1); the method is characterized in that: an automatic adjusting box (2) is arranged above the valve body (1), a middle clapboard (3) is arranged in the middle of the interior of the valve body (1), the bottom of the automatic adjusting box (2) is provided with a blade shaft (4), the outer part of the automatic adjusting box (2) is provided with a protective cover (8), a manual handle (9) is arranged at the top of the protective cover (8), a fuse block (11) is arranged on one side of the manual handle (9), a temperature fusing bar (12) is fixedly connected below the fuse clamping block (11), a spring fixing block (10) is arranged inside the automatic adjusting box (2) above the blade shaft (4), a clockwork spring (13) is arranged on the surface of the spring fixing block (10), the blade (5) is fixedly connected with the outer part of the blade shaft (4), the left side and the right side of the blade (5) are provided with high-temperature resistant rubber blocks (6), and the valve body (1) is provided with an installation inserting angle (7).

2. A fire damper as claimed in claim 1, wherein: the lower part of the manual handle (9) is fixedly connected with the top of the blade shaft (4).

3. A fire damper as claimed in claim 1, wherein: the four installation inserting angles (7) are arranged, and the installation inserting angles (7) are evenly distributed at four corners of the valve body.

4. A fire damper as claimed in claim 1, wherein: the bottom of the blade shaft (4) is fixedly connected with a fixing block (401).

5. A fire damper as claimed in claim 1, wherein: the blade shaft (4) is rotatably connected with the valve body (1), and the blade shaft (4) is rotatably connected with the automatic adjusting box (2).

6. A fire damper as claimed in claim 1, wherein: the spring fixing block (10) stabilizes the spring in the middle through the temperature fusing bar (12) on the side.

7. A fire damper as claimed in claim 1, wherein: the high-temperature resistant rubber blocks (6) are uniformly distributed in the valve body (1).