Stretching type fireproof smoke exhaust valve

Abstract

The utility model discloses a stretching type fireproof smoke exhaust valve which comprises a valve body, a first step sliding rail and a second step sliding rail are symmetrically and fixedly connected to the inner wall of one side of the valve body, and blocking mechanisms are arranged on the inner wall of the first step sliding rail and the inner wall of the second step sliding rail. The blocking mechanism comprises a first sealing groove which is connected to the inner wall of one side of the first step sliding rail and the inner wall of one side of the second step sliding rail in a sliding mode. Through the arrangement of a blocking mechanism, a limiting groove, a pull rod, a sliding plate, a sliding block, a sliding groove and a limiting rod, when the valve body needs to be closed, the limiting rod is rotated to drive the valve body to move upwards and break away from the limiting groove, and then the pull rod is pushed to drive a baffle to slide on the inner walls of a first step sliding rail and a second step sliding rail through the sliding plate and the sliding block, so that the blocking mechanism is unfolded; compared with a traditional mode of closing the valve body through rotating blades, the mode of closing the valve body through pushing, pulling and stretching is more convenient, and the sealing performance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof smoke exhaust valves, in particular to a stretch-type fireproof smoke exhaust valve. Background Art

[0002] The fireproof smoke exhaust valve is a fire-fighting component, which is generally installed on the pipes of the mechanical smoke exhaust system. It is usually in an open state and opens to exhaust smoke when a fire occurs. It closes when the smoke temperature in the smoke exhaust pipe reaches 280 degrees 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] The existing smoke exhaust fire damper blades are closed by rotating within a frame, so there will be a gap at the connection between the blades and the frame, causing a certain amount of air leakage, thus affecting the sealing of the device. Moreover, since the valve plate at the valve mouth of the smoke exhaust fire damper is relatively large, the rotating opening of the valve plate of the smoke exhaust fire damper will generate resistance. The blade shaft is cylindrical, and there is no fulcrum during the relative rotational displacement process, resulting in complete failure of the mechanism, the valve cannot be opened normally, and it is inconvenient to use. Utility Model Content

[0004] In order to overcome the deficiency that the conventional smoke exhaust fire damper in the prior art adopts the method of closing with rotating blades, thereby leaving a gap at the connection between the rotating blades and the frame, causing a certain amount of air leakage, thereby affecting the sealing of the valve body, one of the purposes of the utility model is to provide a stretch-type fire smoke exhaust damper.

[0005] One of the purposes of the present utility model is achieved by the following technical solutions: A stretchable fire and smoke exhaust valve, comprising a valve body: On one inner wall of the valve body, a first stepped slide rail and a second stepped slide rail are symmetrically and fixedly connected. A blocking mechanism is arranged on the inner walls of the first stepped slide rail and the second stepped slide rail. The blocking mechanism includes a first closed groove slidably connected to one inner wall of the first stepped slide rail and the second stepped slide rail. A second closed groove is slidably connected to the inner wall of the first closed groove. A third closed groove is slidably connected to the inner wall of the second closed groove. A baffle is slidably connected to the inner wall of the third closed groove. Springs are arranged between the first closed groove and the second closed groove, the second closed groove and the third closed groove, and the third closed groove and the baffle. The first closed groove, the second closed groove, the third closed groove, and the baffle are all movably connected by the springs; Chutes are opened on the upper surface of the valve body and the upper surface of the first stepped slide rail. Sliders are slidably connected to the inner walls of the chutes. The lower surface of the slider is fixedly connected to the upper surface of the baffle. A slide plate is fixedly connected to one side of the slider. A pull rod is fixedly connected to the middle of one side of the slide plate. A limit groove is opened on the upper surface of the pull rod. A support frame is fixedly connected to the middle of the upper surface of the valve body. The pull rod passes through the support frame and is movably connected to the support frame. A threaded hole is opened in the middle of the upper surface of the support frame. A limit rod is threadedly connected to the inner wall of the threaded hole. A limit hole is opened on the upper surface of the valve body near the limit rod. The limit rod is threadedly connected to the limit groove and the limit hole.

[0006] According to the described stretchable fire and smoke exhaust valve, a knob is fixedly connected to the upper surface of the limit rod. It is convenient to rotate the limit rod, so as to conveniently limit and fix the position of the pull rod by rotating the limit rod.

[0007] According to the described stretchable fire and smoke exhaust valve, sealing gaskets are symmetrically and fixedly connected to the inner walls of the first closed groove, the second closed groove, and the third closed groove. It is convenient to achieve the purpose of sealing, so that the connection between the first closed groove, the second closed groove, the third closed groove, and the baffle can be made more tight.

[0008] According to the described stretchable fire and smoke exhaust valve, the size of the second closed groove is adapted to the size of the inner wall of the first closed groove, and the size of the third closed groove is adapted to the size of the inner wall of the second closed groove. By accommodating and unfolding the first closed groove, the second closed groove, the third closed groove, and the baffle, it is convenient to open and close the valve body, and it is convenient to use.

[0009] According to the described stretchable fire and smoke damper, the number of the blocking mechanisms is two, and the two blocking mechanisms are symmetrically arranged on the inner walls on both sides of the valve body, and the two blocking mechanisms are connected by the sliding plate. It is convenient to close the valve body through the two blocking mechanisms.

[0010] According to the described stretchable fire and smoke damper, the size of the sliding plate is adapted to the size of the support frame, and the sliding plate is slidably connected to the inner wall of the support frame. It is convenient for the sliding plate to move on the inner wall of the support frame and the upper surface of the valve body.

[0011] According to the described stretchable fire and smoke damper, the size of the slider is adapted to the size of the chute. It is convenient for the slider to move on the inner wall of the chute, so as to facilitate the unfolding and storage of the blocking mechanism to close or open the valve body.

[0012] According to the described stretchable fire and smoke damper, the axis line of the limiting rod, the axis line of the threaded hole and the axis line of the limiting hole coincide. It is convenient to achieve the positioning purpose.

[0013] The beneficial effects of the above solution are as follows:

[0014] 1. Through the settings of the blocking mechanism, the limiting groove, the pull rod, the sliding plate, the slider, the chute and the limiting rod, when it is necessary to close the valve body, rotate the limiting rod to drive it to move upward and disengage from the limiting groove, and then push the pull rod to drive the baffle to slide on the inner walls of the first stepped slide rail and the second stepped slide rail through the sliding plate and the slider, so as to unfold the blocking mechanism, and then the blocking mechanism closes the valve body. The method of pushing and pulling to stretch and close the valve body is more convenient and has better sealing performance compared with the traditional method of closing the valve body by rotating blades.

[0015] 2. Through the setting of the sealing gasket, a sealing gasket is arranged between the first sealing groove, the second sealing groove, the third sealing groove and the baffle, so that the sealing performance of the blocking mechanism is better, effectively avoiding the situation of air leakage caused by gaps in the blocking mechanism when closing the valve body, and further improving the practicability of the blocking mechanism and the safety of the valve body.

[0016] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 It is the overall structure schematic diagram of a stretchable fire and smoke damper of the present utility model;

[0019] Figure 2Structural schematic diagram of a blocking mechanism of a stretching type fire and smoke damper of the present utility model;

[0020] Figure 3 Structural schematic diagram of a first stepped slide rail of a stretching type fire and smoke damper of the present utility model;

[0021] Figure 4 Structural schematic diagram of a limiting rod of a stretching type fire and smoke damper of the present utility model;

[0022] Figure 5 Structural schematic diagram of a gasket of a stretching type fire and smoke damper of the present utility model.

[0023] Legend description:

[0024] 1. Valve body; 2. First stepped slide rail; 3. Second stepped slide rail; 4. Blocking mechanism; 401. First closed groove; 402. Second closed groove; 403. Third closed groove; 404. Baffle; 405. Spring; 5. Slide groove; 6. Slide block; 7. Slide plate; 8. Pull rod; 9. Limiting groove; 10. Support frame; 11. Threaded hole; 12. Limiting rod; 13. Limiting hole; 14. Knob; 15. Gasket. Detailed implementation manners

[0025] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be construed as a limitation on the protection scope of the present utility model.

[0026] Refer to Figures 1-5, a stretchable fire and smoke exhaust valve, comprising a valve body 1: on one side inner wall of the valve body 1, a first stepped slide rail 2 and a second stepped slide rail 3 are symmetrically and fixedly connected. A blocking mechanism 4 is arranged on the inner walls of the first stepped slide rail 2 and the second stepped slide rail 3. The blocking mechanism 4 includes a first closed groove 401 slidably connected to the inner wall of one side of the first stepped slide rail 2 and the second stepped slide rail 3. A second closed groove 402 is slidably connected to the inner wall of the first closed groove 401. A third closed groove 403 is slidably connected to the inner wall of the second closed groove 402. A baffle 404 is slidably connected to the inner wall of the third closed groove 403. Springs 405 are arranged between the first closed groove 401 and the second closed groove 402, the second closed groove 402 and the third closed groove 403, and the third closed groove 403 and the baffle 404. The first closed groove 401, the second closed groove 402, the third closed groove 403 and the baffle 404 are all movably connected by the springs 405. On the upper surface of the valve body 1 and the upper surface of the first stepped slide rail 2, a chute 5 is opened. A slider 6 is slidably connected to the inner wall of the chute 5. The lower surface of the slider 6 is fixedly connected to the upper surface of the baffle 404. One side of the slider 6 is fixedly connected with a sliding plate 7. In the middle of one side of the sliding plate 7, a pull rod 8 is fixedly connected. A limiting groove 9 is opened on the upper surface of the pull rod 8. In the middle of the upper surface of the valve body 1, a support frame 10 is fixedly connected. The pull rod 8 passes through the support frame 10 and is movably connected with the support frame 10. A threaded hole 11 is opened in the middle of the upper surface of the support frame 10. A limiting rod 12 is threadedly connected to the inner wall of the threaded hole 11. A limiting hole 13 is opened on the upper surface of the valve body 1 near the limiting rod 12. The limiting rod 12 is threadedly connected with the limiting groove 9 and the limiting hole 13. A knob 14 is fixedly connected to the upper surface of the limiting rod 12. Sealing gaskets 15 are symmetrically and fixedly connected to the inner walls of the first closed groove 401, the second closed groove 402 and the third closed groove 403. The size of the second closed groove 402 is adapted to the size of the inner wall of the first closed groove 401. The size of the third closed groove 403 is adapted to the size of the inner wall of the second closed groove 402. The number of the blocking mechanisms 4 is two. The two blocking mechanisms 4 are symmetrically arranged on the inner walls of both sides of the valve body 1. The two blocking mechanisms 4 are connected by the sliding plate 7. The size of the sliding plate 7 is adapted to the size of the support frame 10. The sliding plate 7 is slidably connected to the inner wall of the support frame 10. The size of the slider 6 is adapted to the size of the chute 5. The axis lines of the limiting rod 12, the threaded hole 11 and the limiting hole 13 coincide with each other.After installing the valve body 1, rotate the knob 14 to drive the limit rod 12 to move upward along the inner walls of the limit hole 13, threaded hole 11 and limit groove 9, so that the limit rod 12 disengages from the limit groove 9 and is no longer in the position of limiting and fixing the pull rod 8. Pull the pull rod 8 to drive the slide plate 7 to move. The movement of the slide plate 7 drives the sliders 6 on both sides to slide along the inner walls of the chute 5. The movement of the sliders 6 drives the baffles 404 on both sides to move along the inner walls of the first stepped slide rail 2 and the second stepped slide rail 3 and compress the spring 405, thereby driving the third closed groove 403 to be received into the inner wall of the second closed groove 402, and at the same time driving the second closed groove 402 to be received into the inner wall of the first closed groove 401, thus completely opening the valve body 1. The speed and flow rate of the smoke exhaust of the valve body 1 are adjusted by moving the position of the baffle 404. On the contrary, when it is necessary to close the valve body 1, push the pull rod 8 to drive the baffle 404 to move through the slide plate 7 and the slider 6 and stretch the spring 405, thereby unfolding the blocking mechanism 4 to achieve the purpose of closing the valve body 1. The method of closing the valve body 1 by pushing and pulling and stretching is more convenient and has better sealing performance compared with the traditional method of closing the valve body 1 by rotating blades, effectively improving the sealing performance of the valve body 1.

[0027] Working principle: After installing the valve body 1, rotate the knob 14 to drive the limit rod 12 to move upward along the inner walls of the limit hole 13, threaded hole 11 and limit groove 9, so that the limit rod 12 disengages from the limit groove 9 and is no longer in the position of limiting and fixing the pull rod 8. Pull the pull rod 8 to drive the slide plate 7 to move. The movement of the slide plate 7 drives the sliders 6 on both sides to slide along the inner walls of the chute 5. The movement of the sliders 6 drives the baffles 404 on both sides to move along the inner walls of the first stepped slide rail 2 and the second stepped slide rail 3 and compress the spring 405, thereby driving the third closed groove 403 to be received into the inner wall of the second closed groove 402, and at the same time driving the second closed groove 402 to be received into the inner wall of the first closed groove 401, thus completely opening the valve body 1. The speed and flow rate of the smoke exhaust of the valve body 1 are adjusted by moving the position of the baffle 404. On the contrary, when it is necessary to close the valve body 1, push the pull rod 8 to drive the baffle 404 to move through the slide plate 7 and the slider 6 and stretch the spring 405, thereby unfolding the blocking mechanism 4 to achieve the purpose of closing the valve body 1. The method of closing the valve body 1 by pushing and pulling and stretching is more convenient and has better sealing performance compared with the traditional method of closing the valve body 1 by rotating blades, effectively improving the sealing performance of the valve body 1.

[0028] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art.

Claims

1. A stretchable fire smoke exhaust damper, characterized in that: The invention comprises a valve body (1): a first step rail (2) and a second step rail (3) are symmetrically fixedly connected to the inner wall of one side of the valve body (1); the inner walls of the first step rail (2) and the second step rail (3) are provided with a blocking mechanism (4); the blocking mechanism (4) comprises a first closed groove (401) slidably connected to the inner wall of one side of the first step rail (2) and the second step rail (3); the inner wall of the first closed groove (401) is slidably connected to the second closed groove (402); the inner wall of the second closed groove (402) is slidably connected to the first closed groove (401); three closed grooves (403), the inner wall of the third closed groove (403) is slidably connected with a baffle (404), springs (405) are arranged between the first closed groove (401) and the second closed groove (402), between the second closed groove (402) and the third closed groove (403), and between the third closed groove (403) and the baffle (404), and the first closed groove (401), the second closed groove (402), the third closed groove (403) and the baffle (404) are movably connected via the springs (405); The upper surface of the valve body (1) and the upper surface of the first step slide rail (2) are both provided with a slide groove (5), the inner wall of the slide groove (5) is slidably connected to a slider (6), the lower surface of the slider (6) is fixedly connected to the upper surface of the baffle (404), one side of the slider (6) is fixedly connected to a slide plate (7), the middle part of one side of the slide plate (7) is fixedly connected to a pull rod (8), the upper surface of the pull rod (8) is provided with a limiting groove (9), the middle part of the upper surface of the valve body (1) is fixedly connected to the slider (7), and the pull rod (8) is fixedly connected to the middle part of the upper surface of the valve body (1). A support frame (10) is fixedly connected thereto, the pull rod (8) passes through the support frame (10) and is movably connected to the support frame (10), a threaded hole (11) is provided in the middle of the upper surface of the support frame (10), the inner wall of the threaded hole (11) is threadedly connected to a limiting rod (12), a limiting hole (13) is provided on the upper surface of one side of the valve body (1) close to the limiting rod (12), and the limiting rod (12) is threadedly connected to the limiting groove (9) and the limiting hole (13).

2. A stretchable fire smoke exhaust damper according to claim 1, characterized in that: A knob (14) is fixedly connected to the upper surface of the limiting rod (12).

3. A stretchable fire smoke exhaust damper according to claim 1, characterized in that: The inner walls of the first closed groove (401), the second closed groove (402) and the third closed groove (403) are all symmetrically fixedly connected with sealing gaskets (15).

4. A stretchable fire smoke exhaust damper according to claim 1, characterized in that: The size of the second closed groove (402) matches the size of the inner wall of the first closed groove (401), and the size of the third closed groove (403) matches the size of the inner wall of the second closed groove (402).

5. The stretchable fire smoke exhaust damper according to claim 1, characterized in that: The number of the blocking mechanisms (4) is two, and the two blocking mechanisms (4) are symmetrically arranged on the inner walls of both sides of the valve body (1), and the two blocking mechanisms (4) are connected via the slide plate (7).

6. A stretchable fire smoke exhaust damper according to claim 1, characterized in that: The size of the slide plate (7) is matched with the size of the support frame (10), and the slide plate (7) is slidably connected to the inner wall of the support frame (10).

7. The stretchable fire smoke exhaust damper according to claim 1, characterized in that: The size of the sliding block (6) is matched with the size of the sliding groove (5).

8. The stretchable fire smoke exhaust damper according to claim 1, characterized in that: The axis center line of the limiting rod (12), the axis center line of the threaded hole (11) and the axis center line of the limiting hole (13) coincide with each other.

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