CN218598907U

CN218598907U - Fire damper for smoke exhaust

Info

Publication number: CN218598907U
Application number: CN202222938916.4U
Authority: CN
Inventors: 熊思超; 陶承志; 喻终德; 肖祥云; 唐明; 龙程
Original assignee: HUNAN TIANYU EQUIPMENT INSTALLATION CO Ltd
Current assignee: HUNAN TIANYU EQUIPMENT INSTALLATION CO Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-10
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a fire prevention valve for discharging fume relates to exhaust pipe technical field, has solved the problem that prior art has the potential safety hazard. The method comprises the following steps: the middle part of the valve body is provided with a partition plate which divides the valve body into an upper chamber and a lower chamber; the actuating mechanism is arranged in the upper cavity and comprises a connecting rod, the middle part of the connecting rod is hinged with the partition plate, one end of the connecting rod is provided with a temperature sensor, the lower part of the temperature sensor is provided with a tension spring, the other end of the connecting rod is abutted with a cam, the cam is abutted with a microswitch, and one end of the connecting rod is also provided with an electromagnet; and the main blade and the auxiliary blade are arranged in the lower cavity and are connected through a flexible rod, a main rotating shaft and an auxiliary rotating shaft are respectively arranged in the middle of the main blade and the auxiliary blade, and the main blade is fixedly connected with the cam through the main rotating shaft. The electromagnet is electrified to act, the pull rod can be pulled to close the valve, the condition that the valve cannot be closed due to the fault of the temperature sensor is avoided, and the safety risk is reduced.

Description

Fire damper for smoke exhaust

Technical Field

The utility model relates to a smoke exhaust pipe technical field specifically is a fire prevention valve is used in discharging fume.

Background

The smoke-discharging fire-resisting valve is a fire-fighting component, generally mounted on the pipeline of mechanical smoke-discharging system, normally is in open state, when fire hazard occurs, the smoke-discharging fire-resisting valve is opened, when the smoke temp. in the smoke-discharging pipeline is reached to 280 deg.C, the smoke-discharging fire-resisting valve is closed, and can meet the requirements of smoke-leaking quantity and fire-resisting integrity in a certain time so as to implement the functions of isolating smoke and resisting fire.

In the smoke exhaust fire damper in the prior art, a temperature sensor is fused, so that a spring connected with the temperature sensor returns to a normal state to drive subsequent actions to close the fire damper; however, when the temperature sensor breaks down, the phenomenon that the fire damper cannot be closed occurs, and potential safety hazards exist.

Therefore, the utility model provides a smoke exhaust is with fire prevention valve to solve the problem that proposes in the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above object, the utility model provides a following technical scheme:

a fire damper for smoke evacuation, comprising:

the valve body is provided with a partition plate in the middle and is divided into an upper chamber and a lower chamber;

the actuating mechanism is arranged in the upper cavity and comprises a connecting rod, the middle of the connecting rod is hinged with the partition plate, one end of the connecting rod is provided with a temperature sensor, the lower part of the temperature sensor is provided with a tension spring, the other end of the connecting rod is abutted with a cam, the cam is abutted with a microswitch, and one end of the connecting rod is also provided with an electromagnet; and

the main blade and the auxiliary blade are arranged in the lower cavity and connected through a flexible rod, a main rotating shaft and an auxiliary rotating shaft are arranged in the middle of the main blade and the auxiliary blade respectively, and the main blade is fixedly connected with the cam through the main rotating shaft.

Further scheme: the top of the cam is also provided with a handle, and one end of the connecting rod, which is close to the cam, is fixedly connected with a pull ring.

Further scheme: a shutter is arranged on one side of the lower chamber.

Further scheme: the middle part of the lower chamber is also provided with a baffle plate, and the height of the baffle plate is lower than the vertical distance between the bottoms of the main blade and the auxiliary blade and the bottom surface of the lower chamber.

Further scheme: the upper chamber is also hinged with a closed door, and a square lock is installed on the closed door.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in when the temperature reaches 280 degrees centigrade, the fusing in temperature sensor middle part, the extension spring resumes the normality from tensile state, and the pulling connecting rod action makes connecting rod and cam throw off, and micro-gap switch drives the cam rotation simultaneously, and then drives main pivot and rotate, drives main blade and vice blade and rotates, realizes that the valve closes. Meanwhile, the electromagnet can be electrified to act, the pull rod is pulled to close the valve, the situation that the valve cannot be closed due to the fault of the temperature sensor is avoided, and the safety risk is reduced.

2. The utility model discloses can also make the connecting rod action through the pulling pull ring, drive main blade and vice blade and rotate, realize that the valve is closed. And the cam can be driven by rotating the handle to realize resetting.

Drawings

To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of an assembled smoke evacuation fire damper;

FIG. 2 is a front view of a smoke evacuation fire damper;

fig. 3 is a schematic view of an actuator in a smoke evacuation fire damper.

In the figure: 1. a valve body; 2. a flexible rod; 3. an actuator; 4. a closing door; 5. a square lock; 6. a blind window; 7. a main blade; 8. a secondary blade; 9. a baffle plate; 10. a partition plate; 31. an electromagnet; 32. a temperature sensor; 33. a tension spring; 34. a microswitch; 35. a handle; 36. a cam; 37. a connecting rod; 38. a pull ring; 71. a main rotating shaft; 72. an auxiliary rotating shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, in an embodiment of the present invention, a smoke exhausting fire damper includes a valve body 1, an actuator 3, a main blade 7 and an auxiliary blade 8. The middle part of the valve body 1 is provided with a partition plate 10 which divides the valve body 1 into an upper chamber and a lower chamber, the front surface of the upper chamber is open, and the back surface of the upper chamber is closed. Both sides of the lower chamber are opened; the actuator 3 is arranged inside the upper chamber, and the actuator 3 comprises a connecting rod 37, and the middle of the connecting rod 37 is hinged with the partition plate 10, so that the connecting rod 37 can rotate relative to the partition plate 10.

A temperature sensor 32 is arranged at one end of a connecting rod 37, the temperature sensor 32 is divided into an upper part and a lower part, the upper part and the lower part are fixed by welding through a thermosensitive material, the lower part of the temperature sensor 32 is fixed on the partition plate 10, a tension spring 33 is arranged at the lower part of the temperature sensor 32, the tension spring 33 is stretched, the upper end of the tension spring 33 is fixedly connected with the upper part of the temperature sensor 32, when the temperature rises to a certain limit, the thermosensitive material at the connecting point of the upper part and the lower part of the temperature sensor 32 is fused, and the tension spring 33 pulls the upper part of the temperature sensor 32 back; the other end of the connecting rod 37 is abutted with a cam 36, the cam 36 is rotationally arranged on the partition board 10, and one end of the cam 36, which is far away from the connecting rod 37, is abutted with a microswitch 34 so as to drive the cam 36 to rotate;

an electromagnet 31 is arranged at one end of a connecting rod 37, and when the temperature sensor 32 fails, the electromagnet 31 is electrified to replace the temperature sensor 32 to pull the connecting rod 37; the main blade 7 and the auxiliary blade 8 are arranged in the lower chamber, the main rotating shaft 71 and the auxiliary rotating shaft 72 are respectively arranged in the middle of the main blade 7 and the auxiliary blade 8, so that the main blade 7 and the auxiliary blade 8 can rotate relative to the lower chamber, the main blade 7 is fixedly connected with the cam 36 through the main rotating shaft 71, the flexible rod 2 is arranged between the main blade 7 and the auxiliary blade 8, so that the blades are connected, the flexible rod 2 can stretch and contract, the cam 36 is rotated to enable the main blade 7 to rotate, and meanwhile, the auxiliary blade 8 is driven to synchronously rotate through the flexible rod 2, so that the blades are closed.

Compared with the prior art, the embodiment of the utility model provides a smoke and exhaust and use fire prevention valve when the temperature reaches 280 degrees centigrade, the fusing in the middle part of temperature sensor 32, extension spring 33 resume the normality from tensile state, and the action of pulling connecting rod 37 makes connecting rod 37 and cam 36 throw off, and micro-gap switch 34 drives cam 36 simultaneously and rotates, and then drives main pivot 71 and rotate, drives main blade 7 and the rotation of vice blade 8, realizes that the valve closes. Meanwhile, the electromagnet 31 can be electrified to act, the pull rod is pulled to close the valve, the situation that the valve cannot be closed due to the fault of the temperature sensor 32 is avoided, and the safety risk is reduced.

In this embodiment, a handle 35 is further disposed on the top of the cam 36, and a pull ring 38 is fixedly connected to one end of the connecting rod 37 close to the cam 36. When in use, the connecting rod 37 can be actuated by pulling the pull ring 38 to drive the main blade 7 and the auxiliary blade 8 to rotate, so that the valve is closed. And the reset is achieved by rotating the handle 35 to move the cam 36.

In one embodiment, a louver 6 is arranged on one side of the lower chamber, and the louver 6 comprises a plurality of small blades which are uniformly inclined and can control the smoke discharge amount in the opening state.

Specifically, the middle part of the lower chamber is also provided with a baffle 9, and the height of the baffle 9 is lower than the vertical distance between the bottoms of the main blade 7 and the auxiliary blade 8 and the bottom surface of the lower chamber, so that the rotation of the main blade 7 and the auxiliary blade 8 is prevented from being hindered.

Furthermore, the upper chamber is also hinged with a sealing door 4, a square lock 5 is arranged on the sealing door 4, and when the valve is opened, the sealing door 4 can be closed, so that the actuating mechanism 3 is prevented from being touched by mistake.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. A fire damper for smoke evacuation, comprising:

the valve comprises a valve body (1), wherein a partition plate (10) is arranged in the middle of the valve body (1) and divides the valve body (1) into an upper chamber and a lower chamber;

the actuating mechanism (3) is arranged in the upper cavity, the actuating mechanism (3) comprises a connecting rod (37), the middle of the connecting rod (37) is hinged to the partition plate (10), a temperature sensor (32) is arranged at one end of the connecting rod (37), a tension spring (33) is arranged at the lower part of the temperature sensor (32), a cam (36) is abutted to the other end of the connecting rod (37), a micro switch (34) is abutted to the cam (36), and an electromagnet (31) is further arranged at one end of the connecting rod (37); and

main blade (7) and auxiliary blade (8), all set up in the cavity inside down, both link to each other through flexible pole (2), main blade (7) and auxiliary blade (8) middle part are equipped with main pivot (71) and auxiliary rotating shaft (72) respectively, main blade (7) are through main pivot (71) and cam (36) fixed connection.

2. The fireproof valve for smoke exhaust of claim 1, wherein a handle (35) is further arranged on the top of the cam (36), and a pull ring (38) is fixedly connected to one end of the connecting rod (37) close to the cam (36).

3. A fire damper for smoke evacuation as claimed in any one of claims 1 to 2 wherein a louver (6) is mounted to one face of said lower chamber.

4. A fire damper for smoke exhaust according to claim 3, wherein a baffle (9) is further arranged in the middle of the lower chamber, and the height of the baffle (9) is lower than the vertical distance between the bottoms of the main blade (7) and the auxiliary blade (8) and the bottom surface of the lower chamber.

5. A fire damper for smoke evacuation as claimed in claim 4 wherein said upper chamber is further hinged with a closing door (4), said closing door (4) being fitted with a square lock (5).