Smoke-proof and fire-proof valve

Abstract

According to the smoke-proof and fire-proof valve, two valve plates are symmetrically arranged in a frame up and down, the outer ends and the contact ends of the two valve plates are each of a semicircular structure, a cavity is formed in one side of the frame, a side plate is arranged outside the cavity, a controller and a motor are fixedly arranged on the side plate, a temperature sensor is arranged in the frame, and the temperature sensor is connected with the temperature sensor. The temperature sensor is electrically connected with the controller, when the temperature in the frame reaches the rated vertical state, the controller can control the motor to be started, the rotating shaft can drive the driving wheels to rotate, the two driving wheels can rotate together through the chain, and therefore the two valve plates can be changed into the vertical state from the horizontal state in the frame. According to the structure, one valve plate is divided into two parts and can be overturned in the frame, so that the space in a pipeline can be reasonably utilized.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a smoke and fire prevention valve. Background Art

[0002] The smoke exhaust fire damper is a fire protection component, which is generally installed on the pipes of the mechanical smoke exhaust system. It is usually in an open state. When a fire occurs, the smoke exhaust is opened. When the smoke temperature in the smoke exhaust pipe reaches 280 degrees, it is closed and meets the smoke leakage and fire resistance integrity requirements within a certain period of time, playing a role in isolating smoke and preventing fire.

[0003] When existing smoke and fire dampers are in use, their opening and closing methods are mostly lifting structures. This method requires a certain space to be reserved for the valve at the valve installation position so that the valve plate can be lifted and lowered in this space, which will take up too much space. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a smoke and fire proof valve.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a smoke and fire proof damper, comprising a frame, wherein two valve plates are symmetrically arranged up and down inside the frame, and the outer ends and contact ends of the two valve plates are semicircular structures, a cavity is provided on one side of the frame, a side plate is provided outside the cavity, a controller and a motor are fixedly arranged on the side plate, a temperature sensor is provided inside the frame, the temperature sensor is electrically connected to the controller, and the controller is electrically connected to the motor, two positioning shafts inserted into the interior of the frame are symmetrically arranged at one end of the valve plate, the positioning shafts are rotatably connected to the frame, a driving wheel is fixedly arranged on one of the positioning shafts, the two driving wheels are connected by a chain, the chain is located inside the cavity, and a rotating shaft is provided at the output end of the motor that passes through the side plate and is connected to the driving wheel.

[0008] Furthermore, the utility model is improved in that the motor is a servo motor.

[0009] In order to improve the stability of the valve plate when in use, the improvements of the utility model are as follows: a plurality of grooves are arranged symmetrically on the bottom and top of the frame for the valve plate; a lifter is arranged inside the frame and is located below the grooves; a push rod is arranged at the output end of the lifter; a limit rod is arranged at the top of the push rod for limiting the valve plate; the limit rod can be located inside the groove, and the controller is electrically connected to the lifter.

[0010] Furthermore, the improvement of the utility model is that the lifter adopts a telescopic cylinder.

[0011] Furthermore, the improvement of the utility model is that the two valve plates, the positioning shaft and the driving wheel have the same size.

[0012] Furthermore, the improvement of the utility model is that the side panels are fixed to both sides of the frame by screws.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a smoke and fire proof valve, which has the following beneficial effects:

[0015] When the temperature in the frame of the smoke and fire damper reaches the rated vertical, the controller can control the motor to start, and the shaft can drive the driving wheel to rotate. The two driving wheels can rotate together through the chain, so that the two valve plates in the frame can change from a horizontal state to a vertical state, and the structure can be in a closed state. At this time, the state of the structure is as follows: Figure 1 As shown, the structure divides a valve plate into two and can be turned over in the frame, so as to reasonably utilize the space in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 For this utility model Figure 1 The main view;

[0018] Figure 3 This is a schematic diagram of the matching structure of two driving wheels in the utility model;

[0019] In the figure: 1. frame; 2. controller; 3. motor; 4. valve plate; 5. positioning shaft; 6. driving wheel; 7. chain; 8. rotating shaft; 9. side plate; 10. groove; 11. limit rod; 12. push rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3, a smoke and fire damper, comprising a frame 1, wherein two valve plates 4 are symmetrically arranged up and down inside the frame 1, and the outer ends and contact ends of the two valve plates 4 are semicircular structures, a cavity is arranged on one side of the frame 1, a side plate 9 is arranged outside the cavity, a controller 2 and a motor 3 are fixedly arranged on the side plate 9, a temperature sensor is arranged inside the frame 1, the temperature sensor is electrically connected to the controller 2, and the controller 2 is electrically connected to the motor 3, two positioning shafts 5 inserted into the frame 1 are symmetrically arranged at one end of the valve plate 4, the positioning shaft 5 is rotatably connected to the frame 1, a driving wheel 6 is fixedly arranged on one of the positioning shafts 5, the two driving wheels 6 are connected by a chain 7, and the chain 7 is located inside the cavity, and a rotating shaft 8 penetrating the side plate 9 and connected to the driving wheel 6 is arranged at the output end of the motor 3;

[0022] When the structure is in use, the frame 1 is fixed at a specified position, and the temperature in the frame 1 can be constantly monitored by the temperature sensor. When the temperature in the frame 1 reaches the rated vertical temperature, the controller 2 can control the motor 3 to start, and the shaft 8 can drive the driving wheel 6 to rotate. The two driving wheels 6 can rotate together through the chain 7, so that the two valve plates 4 in the frame 1 can be changed from a horizontal state to a vertical state, and the structure can be in a closed state. At this time, the state of the structure is as follows: Figure 1 As shown, this structure divides a valve plate 4 into two, and can be turned over in the frame 1, so as to reasonably utilize the space in the pipeline.

[0023] Furthermore, the motor 3 can be a servo motor.

[0024] When the valve plate 4 is in a closed state, the valve plate 4 lacks a supporting structure, which will affect the stability of the valve plate 4 when in use. A plurality of grooves 10 are symmetrically arranged on the valve plate 4 at the bottom and top of the frame 1. A lifter is arranged inside the frame 1 and is located below the grooves 10. A push rod 12 is arranged at the output end of the lifter. A limit rod 11 is arranged at the top of the push rod 12 for limiting the position of the valve plate 4. The limit rod 11 can be located inside the groove 10, and the controller 2 is electrically connected to the lifter. When the valve plate 4 is closed, the lifter is started, and the limit rod 11 contacts the valve plate 4, which can provide a supporting structure for the valve plate 4 and improve the stability of the valve plate 4 when in use.

[0025] Furthermore, the lifter may be a telescopic cylinder.

[0026] Furthermore, the two valve plates 4 , the positioning shaft 5 and the driving wheel 6 have the same size.

[0027] Furthermore, the side panels 9 are fixed to both sides of the frame 1 by screws. The screw fixing method has the advantage of convenient assembly, which enables the side panels 9 to be easily assembled.

[0028] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke and fire damper, comprising a frame (1), characterized in that: Two valve plates (4) are symmetrically arranged in the upper and lower parts of the frame (1), and the outer ends and contact ends of the two valve plates (4) are semicircular structures. A cavity is arranged on one side of the frame (1), and a side plate (9) is arranged outside the cavity. A controller (2) and a motor (3) are fixedly arranged on the side plate (9). A temperature sensor is arranged in the frame (1), and the temperature sensor is electrically connected to the controller (2). The controller (2) is electrically connected to the motor (3). Two positioning shafts (5) inserted into the frame (1) are symmetrically arranged at one end of the valve plate (4), and the positioning shafts (5) are rotatably connected to the frame (1). A driving wheel (6) is fixedly arranged on one of the positioning shafts (5), and the two driving wheels (6) are connected to each other through a chain (7). The chain (7) is located in the cavity. A rotating shaft (8) is arranged at the output end of the motor (3) and passes through the side plate (9) and is connected to the driving wheel (6).

2. A smoke and fire damper according to claim 1, characterized in that: The motor (3) is a servo motor.

3. A smoke and fire damper according to claim 2, characterized in that: A plurality of grooves (10) are arranged at the bottom of the frame (1) and on the top symmetrical valve plate (4); a lifter is arranged inside the frame (1) and is located below the grooves (10); a push rod (12) is arranged at the output end of the lifter; a limit rod (11) is arranged at the top end of the push rod (12) for limiting the position of the valve plate (4); the limit rod (11) can be located inside the grooves (10), and the controller (2) is electrically connected to the lifter.

4. A smoke and fire damper according to claim 3, characterized in that: The lifter adopts a telescopic cylinder.

5. The smoke and fire damper according to claim 4, characterized in that: The two valve plates (4), the positioning shaft (5) and the driving wheel (6) have the same dimensions.

6. A smoke and fire damper according to claim 5, characterized in that: The side panels (9) are fixed to both sides of the frame (1) by means of screws.

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