CN218718869U

CN218718869U - Smoke exhaust valve

Info

Publication number: CN218718869U
Application number: CN202222975597.4U
Authority: CN
Inventors: 许惠中; 许洋; 张灵江; 许建林; 周林钧
Original assignee: Zhejiang Huichuang Fan Co ltd
Current assignee: Zhejiang Huichuang Fan Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-24
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a smoke exhaust valve, including the valve body, set up the two-layer blade in the valve body, the first layer blade is connected with first connecting rod, and the second floor blade is connected with the second connecting rod, and a blade axle in the first layer blade is connected with the corresponding blade axle in the second floor blade, and another blade axle in the first layer blade is connected with smoke exhaust valve actuating mechanism. The smoke exhaust valve actuating mechanism drives the blade shaft connected with the smoke exhaust valve actuating mechanism to rotate, and the first layer of blades rotate. Meanwhile, a blade shaft in the first layer of blades drives the second layer of blades to rotate. Thus, under the driving of the smoke exhaust valve actuating mechanism, the two layers of blades are closed and opened simultaneously.

Description

Smoke exhaust valve

Technical Field

The utility model relates to a fire-fighting equipment, concretely relates to smoke exhaust equipment.

Background

The fire-proof valve is a normally closed valve, which is opened by a control center through 24V direct current or manually opened, and is automatically closed at 280 ℃ and manually reset. It has the following functions: when the temperature of the flue gas reaches 280 ℃, people are basically evacuated, the actual meaning of the flue gas discharge is not realized, and the valve is automatically closed when the fire is brought in the flue gas, so that the fire is prevented from spreading. The smoke exhaust port of the system can also be a normally closed fireproof smoke exhaust port, and a smoke exhaust fireproof valve on a branch pipe is omitted. In case of fire, the tuyere is opened by a control center through 24V direct current or manually opened, and is automatically closed when the smoke temperature reaches 280 ℃, and the reset is also manually performed.

The inlet of the smoke exhaust fan room is also provided with a smoke exhaust fire prevention valve to prevent fire from spreading to the layer where the fan room is located. The fire-proof valve is used on the air supply and return pipelines of ventilation and air conditioning systems, is normally in an open state, and can be automatically closed when the temperature of gas in the pipeline reaches 70 ℃ once a fire disaster occurs, and can meet the requirements of fire-proof stability and fire-proof integrity within a certain time, thereby playing the roles of smoke insulation and fire retardation.

A full automatic smoke exhaust valve is disclosed in patent document No. CN 213839585U. The smoke exhaust valve mainly comprises a valve body, a smoke exhaust valve executing mechanism is arranged outside the valve body, blades are arranged inside the valve body, pressing plates are arranged below the blades, blade shafts are arranged on connecting portions of the pressing plates, baffle plates are arranged above the blades, connecting rod devices are directly arranged on the blades and the pressing plates, and the blades are connected in a staggered mode. The blades are divided into an upper layer and a lower layer, and the two layers of blades are closed and opened simultaneously. The double-layer blades can accelerate the emission of smoke in the maximum function, and meanwhile, the upper and lower blades can be adjusted to be opened and closed at any time according to the smoke. However, this document does not deal with how to have two layers of vanes close and open simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: how to simultaneously close and open two layers of blades of the smoke exhaust valve.

In order to solve the technical problem, the utility model provides a following technical scheme: a smoke exhaust valve comprises a valve body and two layers of blades arranged in the valve body, wherein a first layer of blades are connected with a first connecting rod, a second layer of blades are connected with a second connecting rod, a blade shaft in the first layer of blades is connected with a corresponding blade shaft in the second layer of blades, and the other blade shaft in the first layer of blades is connected with a smoke exhaust valve actuating mechanism.

According to the technical scheme, the smoke exhaust valve actuating mechanism drives the blade shaft connected with the smoke exhaust valve actuating mechanism to rotate, and the blade shaft drives other blade shafts of the first layer of blades to rotate through the first connecting rod. Meanwhile, one blade shaft in the first layer of blades drives the corresponding blade shaft of the second layer of blades to rotate, and the blade shaft drives the other blade shafts of the second layer of blades to rotate through the second connecting rod. Thus, under the driving of the smoke exhaust valve actuating mechanism, the two layers of blades are closed and opened simultaneously.

Because in the first layer blade, the blade axle of being connected with smoke damper actuating mechanism is different from the blade axle of being connected with second floor blade axle, consequently, this diaxon dislocation set compares in coaxial setting, and the diaxon can not bear too big moment of torsion, avoids blade axle and blade to warp or even fracture.

The utility model discloses can be according to opening and the closure of blade about the flue gas simultaneous adjustment.

Drawings

The invention is further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of a smoke evacuation valve;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the vane of FIG. 2 shown open;

FIG. 4 is an enlarged view of the point B in FIG. 1;

FIG. 5 is an enlarged view of the point C in FIG. 1;

FIG. 6 is an enlarged view of FIG. 2 at D;

fig. 7 is an enlarged view of E in fig. 2.

The symbols in the drawings illustrate that:

10. a first layer of blades; 100. a single blade in the first layer of blades; 11. a first link; 12. pressing a plate; 13. a tension spring; 14. a connecting shaft; 15. the blade shaft is connected with the smoke exhaust valve actuating mechanism; 16. half shafts of the first layer of blades;

20. a second layer of blades; 200. a single leaf in the second tier of leaves; 21. a second link; 22. a blade shaft located at the center of the second layer of blades; 23. half shafts of the second layer of blades;

30. a smoke exhaust valve actuator;

40. a valve body; 41. a support plate; 410. the bracket is arranged on the support plate; 42. the bracket is arranged on the valve body; 43. a shaft sleeve; 44. a spring plate; 45. and a baffle plate.

Detailed Description

Referring to fig. 1, 2 and 5, the smoke exhaust valve comprises a valve body and two layers of blades arranged in the valve body 40, wherein a first layer of blades 10 is connected with a first connecting rod 11, a second layer of blades 20 is connected with a second connecting rod 21, one blade shaft of the first layer of blades is connected with a corresponding blade shaft of the second layer of blades, and the other blade shaft of the first layer of blades is connected with a smoke exhaust valve actuating mechanism 30.

The smoke exhaust valve actuator 30 rotates the blade shaft connected thereto, and the blade shaft rotates the other blade shafts of the first layer of blades 10 via the first link 11. Meanwhile, one blade shaft in the first layer blade 10 drives the corresponding blade shaft of the second layer blade 20 to rotate, and the blade shaft drives the other blade shafts of the second layer blade to rotate through the second connecting rod 21. Thus, under the driving of the smoke exhaust valve actuating mechanism 30, the two layers of blades are closed and opened simultaneously.

With reference to fig. 1 and 5, as an option, one blade of the first-layer blade 10 is connected to a corresponding blade of the second-layer blade 20 through a connecting shaft 14, so as to achieve the purpose that the first-layer blade 10 drives the second-layer blade 20.

As shown in fig. 1, a support plate 41 is arranged between the two layers of blades, one end of the first layer of blades 10 and one end of the second layer of blades 20 adjacent to the end are hinged on the support plate, and the blade shafts connected in the two layers of blades pass through the support plate. The other end of the first layer blade 10 and the other end of the second layer blade 20 are hinged on the valve body 40.

Referring to fig. 1, in the first layer of blades 10, the blade shaft 15 connected to the smoke exhaust valve actuator 30 is a long shaft, and the other blade shafts in the first layer of blades 10 are half shafts, and both the long shaft and the half shafts are fixed to the corresponding blades through the pressing plate 12. The blades are provided with profiled recesses of major or semi-axes in which they fit, the long or semi-axes being locked in said profiled recesses by pressure plates 12. The pressure plate 12 is secured to the blade by threaded fasteners. The vane shaft connected to the smoke exhaust valve actuator 30 is a long shaft to prevent the vane from twisting during power transmission.

As shown in fig. 1, the blade shaft 22 located at the center of the second layer of blades 20 is a long shaft, and the other blade shafts in the second layer of blades are half shafts, and both the long shaft and the half shafts are fixed to the corresponding blades by the pressing plates. The blade shaft 22 located at the center of the second-layer blade 20 is a long shaft, and can stabilize the rotation of the second-layer blade 20 and prevent the second-layer blade 20 from twisting.

As shown in fig. 1, a leaf of the first layer of leaves 10 is connected with a telescopic spring 13, one end of which is connected with the leaf, and the other end of which is connected with a valve body 40. The blade connected with the telescopic spring 13 is connected with the corresponding blade in the second layer of blades 20 through the connecting shaft 14. The telescopic springs 13 are used for resetting the first-layer blades 10 and the second-layer blades 20, and particularly, after the first-layer blades 10 and the second-layer blades 20 are reset, the edges of the adjacent blades can be abutted to maintain a closed state.

As shown in fig. 1, a support 42 is mounted on the valve body 40, a shaft sleeve 43 is fitted on the support, one end of the vane shaft is fitted in the shaft sleeve, a spring plate 44 is disposed on the support, two ends of the spring plate are fixedly connected with the support, the middle of the spring plate is in contact with the vane shaft, and friction force is provided between the spring plate and the vane shaft. Therefore, under the action of a large enough external force, the blade shaft can rotate, the self-resetting of the blade is avoided, and the reset blade can be kept in a closed state.

With reference to fig. 2, 6 and 7, when the smoke exhaust valve is closed, the edges of the adjacent blades in the same layer of blades can be abutted. The opposite sides of the valve body 40 are provided with baffles 45, and when the smoke exhaust valve is closed, the blades adjacent to the baffles can abut against the baffles. Therefore, when the smoke exhaust valve is closed, all the blades are limited, and the whole smoke exhaust valve is in a closed state.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a smoke exhaust valve, includes the valve body, sets up the two-layer blade in valve body (40), and first layer blade (10) are connected with first connecting rod (11), and second layer blade (20) are connected its characterized in that with second connecting rod (21): one blade shaft in the first layer of blades is connected with a corresponding blade shaft in the second layer of blades, and the other blade shaft in the first layer of blades is connected with a smoke exhaust valve actuating mechanism (30).

2. A smoke evacuation valve as claimed in claim 1 wherein: a support plate (41) is arranged between the two layers of blades, one end of the first layer of blade (10) and one end of the second layer of blade (20) adjacent to the end are arranged on the support plate, and a blade shaft connected between the two layers of blades penetrates through the support plate.

3. A smoke damper according to claim 1, wherein: the blade shaft connected with the smoke exhaust valve actuating mechanism (30) is a long shaft, other blade shafts in the first layer of blades (10) are half shafts, and the long shaft and the half shafts are fixed on the corresponding blades through the pressing plates (12).

4. A smoke evacuation valve as claimed in claim 1 wherein: the blade shaft in the central position in the second layer of blades (20) is a long shaft, other blade shafts in the second layer of blades are half shafts, and the long shaft and the half shafts are fixed on the corresponding blades through the pressing plates.

5. A smoke evacuation valve as claimed in claim 1 wherein: one of the first layer of blades (10) is connected with a telescopic spring (13), and the telescopic spring is connected with the valve body (40).

6. A smoke evacuation valve as claimed in claim 1 wherein: a support (42) is installed on the valve body (40), a shaft sleeve (43) is matched on the support, one end of the blade shaft is matched in the shaft sleeve, a spring piece (44) is arranged on the support, two ends of the spring piece are fixedly connected with the support, and the middle of the spring piece is contacted with the blade shaft.

7. A smoke evacuation valve as claimed in claim 1 wherein: when the smoke exhaust valve is closed, the edges of the adjacent blades in the same layer of blades can be abutted.

8. A smoke evacuation valve as claimed in claim 1 wherein: the two opposite sides of the valve body (40) are provided with baffle plates (45), and when the smoke exhaust valve is closed, the blades adjacent to the baffle plates can abut against the baffle plates.