Suspension-type blast wave relief valve

Abstract

The utility model discloses a suspension formula explosion -proof wave valve relates to the field of explosion -proof wave valve, to solve the dust screen of explosion -proof wave valve in prior art is directly fixed in the inside of vent, leads to the dust screen of explosion -proof wave valve to affect the ventilation efficiency of vent when daily use problem. Three vents are evenly spaced and arranged on the explosion -proof wave valve, the wave valve plate is rotatably arranged at the front end of the explosion -proof wave valve and the front end of each vent, a first annular air bag is fixedly connected to the rear end face edge of each wave valve plate, a lifting frame is arranged at the rear end of the explosion -proof wave valve and the rear end of each vent, a dust screen is fixedly arranged in the lifting frame, a second annular air bag is arranged between the front end face of the lifting frame and the rear end face of the explosion -proof wave valve, through setting the dust screen structure of lifting, can completely move down and separate from the vent under the non - war time working condition, realizes the unobstructed full - flow state of vent, has improved daily ventilation efficiency significantly.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof wave valves, specifically a swing-type explosion-proof wave valve. Background Technology

[0002] An explosion-proof valve (also known as an explosion-proof shock wave valve or shock wave protection valve) is a special safety device used to protect enclosed facilities (such as civil defense projects and underground military facilities), primarily to resist the destructive effects of blast shock waves. Its core function is to quickly sense the overpressure of the shock wave during an explosion, and effectively weaken the shock wave intensity by automatically closing or opening specific channels, preventing high-pressure airflow from directly intruding into the internal space while maintaining necessary ventilation or pressure relief.

[0003] For example, authorization announcement number CN222782567U discloses a swing-type explosion-proof wave valve, including: an explosion-proof wave valve body, a wave valve panel on one side of the explosion-proof wave valve body, an impact-resistant buffer structure around the wave valve panel on one side of the explosion-proof wave valve body, a ventilation opening on the side of the explosion-proof wave valve body facing the wave valve panel, a dustproof net connected inside the ventilation opening, a locking rod on the lower end of the wave valve panel on one side of the explosion-proof wave valve body, and a lock hole on the side of the explosion-proof wave valve body facing the locking rod. This utility model has the following advantages: when the wave valve panel is closed due to external impact, the air cushion on the wave valve panel will deform in conjunction with the cavity, thereby effectively buffering and protecting the wave valve panel; after the wave valve panel is closed, the locking rod will automatically insert into the lock hole, and the locking rod in the lock hole will push the locking block and lock in the lock groove, thus fixing the locking rod; when the wave valve panel is opened for ventilation, the dustproof net can effectively block dust in the outside air.

[0004] However, in the aforementioned technologies, the dustproof screen of the blast wave valve is directly fixed inside the ventilation opening. This causes the dustproof screen to affect the ventilation efficiency of the ventilation opening during daily use, especially in peacetime conditions, thus affecting normal ventilation needs. Therefore, the market urgently needs to develop a swing-type blast wave valve to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a swing-type blast wave valve to solve the problem mentioned in the background art where the dustproof net of the blast wave valve is directly fixed inside the ventilation opening, which causes the dustproof net to affect the ventilation efficiency of the ventilation opening during daily use, especially in peacetime conditions, thus affecting normal ventilation needs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a suspended blast wave valve, comprising a blast wave valve, wherein three ventilation openings are equally spaced on the blast wave valve, a rotatable blast wave valve plate is rotatably provided at the front end of the blast wave valve and at the front end of each ventilation opening, a first annular airbag is fixedly connected to the rear edge of each blast wave valve plate, a lifting frame is provided at the rear end of the blast wave valve and at the rear end of each ventilation opening, a dustproof net is fixedly provided inside the lifting frame, and a second annular airbag is provided between the front end of the lifting frame and the rear end of the blast wave valve.

[0007] Preferably, the front end face of the explosion-proof wave valve is fixedly connected to rotating connectors on both sides of the upper middle part of each vent, and rotating arms are fixedly connected to both sides of the upper middle part of the wave valve plate.

[0008] Preferably, the two rotating arms at the upper end of the wave-shaped door panel are rotatably connected to the two rotating connectors at the upper end of the vent via damping shafts.

[0009] Preferably, an annular adsorption cavity is provided on the rear end face of the first annular airbag, and the front end face of the adsorption cavity is connected to the interior of the first annular airbag through multiple exhaust holes.

[0010] Preferably, an internally threaded air inlet pipe is fixedly connected to the lower middle part of the first annular airbag, and a threaded cap is fixed to the upper end of the internally threaded air inlet pipe.

[0011] Preferably, both ends of the rear end face of the explosion-proof valve are fixedly connected to fixed connectors, and guide rods are fixedly connected between the two fixed connectors on both sides of the rear end face of the explosion-proof valve.

[0012] Preferably, the rear end of the second annular airbag is fixedly connected to the lifting frame, and guide members are fixedly connected to both sides of the lifting frame. A guide through hole is provided in the middle of the guide member, and the two guide rods pass through the guide through holes of the three guide members on both sides of the lifting frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by setting up a liftable dustproof net structure, the dustproof net can be completely moved down and removed from the ventilation opening in non-wartime working conditions, so as to achieve unobstructed full flow of the ventilation opening, which significantly improves the daily ventilation efficiency and solves the problem of traditional fixed dustproof nets affecting ventilation.

[0015] (2) In this utility model, a dual buffer sealing design of a first annular airbag and a second annular airbag is adopted. When the valve door is closed, the first annular airbag can buffer the impact force and form an adsorption seal through exhaust. The second annular airbag can ensure the sealing between the lifting frame and the ventilation port, which greatly improves the wartime protection performance.

[0016] (3) In this utility model, the lifting and lowering adjustment of the dustproof net is achieved by the sliding cooperation of the guide rod and the guide component. The structure is simple and reliable and easy to operate. At the same time, the design of the damping shaft enables the wave-activated door panel to respond quickly to the shock wave and close, and to reset smoothly, thus achieving a balance between protective performance and ease of use. Attached Figure Description

[0017] Figure 1 This is a front view of the suspended swing-type explosion-proof wave valve of this utility model;

[0018] Figure 2 This is a rear view of the present invention;

[0019] Figure 3 This is a side sectional view of the present invention;

[0020] Figure 4 This is a detailed enlarged view of part A of this utility model.

[0021] In the diagram: 1. Explosion-proof wave valve; 101. Ventilation opening; 102. Rotating connector; 103. Fixed connector; 104. Guide rod; 2. Wave valve panel; 201. Rotating arm; 202. Damping shaft; 3. First annular airbag; 301. Adsorption chamber; 302. Exhaust port; 303. Internally threaded air inlet pipe; 304. Threaded cap; 4. Lifting frame; 401. Dustproof net; 402. Guide component; 403. Guide through hole; 404. Second annular airbag. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a suspended blast wave valve, comprising a blast wave valve 1, three vents 101 evenly spaced on the blast wave valve 1, a lifting frame 4 at the rear end of the blast wave valve 1 and at the rear end of each vent 101, a dustproof net 401 fixedly installed inside the lifting frame 4, a second annular airbag 404 between the front end of the lifting frame 4 and the rear end of the blast wave valve 1, fixed connecting parts 103 fixedly connected to both the upper and lower ends of the rear end of the blast wave valve 1, and guide rods 104 fixedly connected between the upper and lower fixed connecting parts 103 on both sides of the rear end of the blast wave valve 1, the rear end of the second annular airbag 404 fixedly connected to the lifting frame 4, and the second annular airbag 404 being compressed between the lifting frame 4 and the rear end of the blast wave valve 1. In the lifting frame 4, guide members 402 are fixedly connected to both sides. A guide through hole 403 is provided in the middle of the guide member 402. Two guide rods 104 pass through the guide through holes 403 of the guide members 402 on both sides of the lifting frame 4, so that the lifting frame 4 slides on the guide rods 104 through the two guide members 402 to achieve lifting and lowering. The second annular airbag 404 presses against the rear end of the explosion-proof valve 1 and keeps it stationary when there is no external force facing the lifting frame 4. In daily use, by pulling down the lifting frame 4, the lifting frame 4 moves down and moves out of the rear end of the ventilation port 101, so that the ventilation port 101 can ventilate freely. In wartime, by pulling up the lifting frame 4, the second annular airbag 404 seals the ventilation port 101 and the lifting frame 4, so that ventilation can be carried out through the dustproof net 401.

[0024] Please see Figure 3 An explosion-proof wave valve 1 is rotatably provided with a wave valve plate 2 at the front end of each ventilation opening 101. Rotary connecting parts 102 are fixedly connected to the front face of the explosion-proof wave valve 1 and to both sides of the upper middle part of each ventilation opening 101. Rotary arms 201 are fixedly connected to both sides of the upper middle part of the wave valve plate 2. The two rotating arms 201 at the upper end of the wave valve plate 2 are rotatably connected to the two rotating connecting parts 102 at the upper end of the ventilation opening 101 through a damping shaft 202. When the outside of the wave valve plate 2 is impacted, the wave valve plate 2 rotates downward through the damping shaft 202 to close the ventilation opening 101.

[0025] Please see Figure 3 Figure 4Each wave valve panel 2 has a first annular airbag 3 fixedly connected to its rear end edge. An annular adsorption chamber 301 is provided on the rear end face of the first annular airbag 3. The front end face of the adsorption chamber 301 communicates with the interior of the first annular airbag 3 through multiple exhaust holes 302. An internally threaded air inlet pipe 303 is fixedly connected to the lower middle part of the interior of the first annular airbag 3. A threaded cap 304 is threadedly fixed to the upper end of the internally threaded air inlet pipe 303. When the wave valve panel 2 is impacted and closes with the ventilation opening 101, the first annular airbag 3 first contacts the front end face of the explosion-proof wave valve 1 to achieve buffering. The first annular airbag 3 is compressed and contracts, and the air inside the first annular airbag 3 is discharged through the exhaust hole 302. After the impact is released, the valve plate 2 is adsorbed by the adsorption chamber 301 of the first annular airbag 3 onto the front face of the explosion-proof valve 1 and sealed by the ventilation port 101. When it is necessary to reopen the valve plate 2, the internal threaded air inlet pipe 303 is opened by rotating the threaded cap 304, so that the first annular airbag 3 can draw in air through the internal threaded air inlet pipe 303, thereby making the adsorption chamber 301 contact the adsorption state on the front face of the explosion-proof valve 1, thus realizing the opening of the valve plate 2.

[0026] Working principle: In peacetime, the suspended blast wave valve is operated by manually pulling down the lifting frame 4 to move it down along the guide rod 104, allowing the dust screen 401 to completely detach from the area behind the ventilation opening 101. At this time, the ventilation opening 101 achieves unobstructed full flow, ensuring normal ventilation efficiency. In wartime, the lifting frame 4 is pushed up until the second annular airbag 404 is tightly fitted with the rear end face of the blast wave valve 1, forming a sealed structure while maintaining the dust filtering function. When the blast wave strikes, the valve plate 2 closes rapidly around the damping shaft 202 under the impact force. When the first annular airbag 3 contacts the front end face of the blast wave valve 1, it forms a negative pressure adsorption chamber 301 through compressed exhaust, achieving the dual functions of impact buffering and airtight locking. After the war, the threaded cap 304 is unscrewed, allowing the first annular airbag 3 to enter through the internal threaded air inlet pipe 303 to release the adsorption, thus opening the valve plate 2.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A swing-type explosion-proof valve, comprising an explosion-proof valve (1), characterized in that: The explosion-proof valve (1) has three vents (101) evenly spaced on it. A valve plate (2) is rotatably provided at the front end of the explosion-proof valve (1) and at the front end of each vent (101). A first annular airbag (3) is fixedly connected to the rear edge of each valve plate (2). A lifting frame (4) is provided at the rear end of the explosion-proof valve (1) and at the rear end of each vent (101). A dustproof net (401) is fixedly provided inside the lifting frame (4). A second annular airbag (404) is provided between the front end of the lifting frame (4) and the rear end of the explosion-proof valve (1).

2. The suspended swing-type explosion-proof wave valve according to claim 1, characterized in that: The front end face of the explosion-proof wave valve (1) and the upper middle sides of each ventilation opening (101) are fixedly connected with rotating connectors (102), and the upper middle sides of the wave valve plate (2) are fixedly connected with rotating arms (201).

3. The suspended swing-type explosion-proof wave valve according to claim 2, characterized in that: The two rotating arms (201) at the upper end of the wave-shaped door panel (2) are rotatably connected to the two rotating connectors (102) at the upper end of the vent (101) through damping shafts (202).

4. The suspended swing-type explosion-proof wave valve according to claim 1, characterized in that: An annular adsorption cavity (301) is provided on the rear end face of the first annular airbag (3), and the front end face of the adsorption cavity (301) is connected to the interior of the first annular airbag (3) through multiple exhaust holes (302).

5. The swing-type explosion-proof wave valve according to claim 4, characterized in that: The first annular airbag (3) has an internally threaded air inlet pipe (303) fixedly connected to the middle of the lower end inside, and a threaded cap (304) is fixedly threaded at the upper end of the internally threaded air inlet pipe (303).

6. The suspended swing-type explosion-proof valve according to claim 1, characterized in that: The explosion-proof valve (1) has fixed connecting parts (103) on both sides of the upper and lower ends of the rear end face, and guide rods (104) are fixedly connected between the two fixed connecting parts (103) on both sides of the rear end face.

7. The suspended swing-type explosion-proof wave valve according to claim 6, characterized in that: The rear end of the second annular airbag (404) is fixedly connected to the lifting frame (4). Guide members (402) are fixedly connected to both sides of the lifting frame (4). A guide through hole (403) is provided in the middle of the guide member (402). The two guide rods (104) pass through the guide through holes (403) of the guide members (402) on both sides of the three lifting frames (4).

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