Smoke exhaust check valve

Abstract

The utility model discloses a smoke exhaust check valve, relates to check valve technical field, including valve body, valve plate, rubber pad, fixed plate, counter weight plate and support plate, the two sets of valve plate symmetrically rotatingly connect in the inside of valve body, the two sets of rubber pad are fixed in the lower edge of two sets of valve plate, the bottom of two sets of rubber pad is fit with valve body, the fixed plate is fixed in the valve body, the counter weight plate is fixed in the valve body. Each group of rubber mats is of a hollow structure and is made of silica gel, the two groups of valve plates play a good anti-falling buffering role and avoid noise during resetting through the two groups of rubber mats, the fixing plate is fixed at the upper parts of the valve plates, the counterweight plate is fixed at the lower parts of the valve plates, the rubber mats are positioned outside the counterweight plate, and the two groups of rubber mats are fixed on the upper part of the counterweight plate. The supporting plate is fixed in the valve body, the two sets of valve plates are turned downwards, the rubber mat makes contact with the convex edge, the rubber mat of a hollow structure can effectively absorb sound waves through an inner cavity and a silica gel material, the two sets of valve plates have good anti-falling buffering performance during resetting, and noise is avoided.

Description

Technical Field

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

[0002] Flue check valve is also called reverse flow valve, non-return valve, back pressure valve, one-way valve, flue valve. Flue valve is a kind of automatic valve that automatically opens and closes by the force generated by the flow of the medium in the pipeline.

[0003] After searching, we have disclosed an automatic reset smoke exhaust check valve (publication number: CN217401805U). In this patent, when the sealing cover closes the circular connecting edge, the sealing cover impacts the connecting edge during long-term use, which can easily cause component damage and generate noise. For this reason, we propose a smoke exhaust check valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a smoke exhaust check valve, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a smoke exhaust check valve, including a valve body, characterized in that it includes:

[0006] Valve plates, two groups of valve plates are symmetrically rotatably connected inside the valve body.

[0007] Rubber pads, the two groups of rubber pads are fixed on the lower edges of the two groups of valve plates, the bottoms of the two groups of rubber pads are in contact with the valve body, each group of rubber pads has a hollow structure, and the material is silicone. The two groups of rubber pads can provide good anti-fall and cushioning properties for the two groups of valve plates when they are reset, and avoid the generation of noise.

[0008] Furthermore, the smoke exhaust check valve further comprises:

[0009] A fixing plate, the fixing plate being fixed on the upper part of the valve plate;

[0010] A counterweight plate is fixed to the lower part of the valve plate, and the rubber pad is located outside the counterweight plate.

[0011] Furthermore, the valve body comprises:

[0012] A valve seat, the valve seat being located outside the two groups of valve plates;

[0013] The second convex edges, two groups of the second convex edges are symmetrically fixed on the outer surface of the valve seat.

[0014] Furthermore, the valve body further comprises:

[0015] A mounting seat, the mounting seat being snap-connected to the upper portion of the valve seat;

[0016] Extension seats, two groups of the extension seats are symmetrically fixed on the outer surface of the mounting seat;

[0017] Mounting slots, each set of the mounting slots being disposed at the bottom of each set of extension seats;

[0018] Triangular blocks, each group of the triangular blocks is fixed at the lower part of each group of mounting grooves, and each group of the second convex edges is located between each group of mounting grooves and each group of triangular blocks.

[0019] Furthermore, the smoke exhaust check valve further comprises:

[0020] A support plate, wherein the support plate is fixed inside the valve body;

[0021] Rotating seats, two groups of rotating seats are fixed at two ends of the support plate, and two ends of the two groups of valve plates are rotatably connected inside the two groups of rotating seats;

[0022] Cover plates, two groups of cover plates are fixed on the upper parts of two groups of rotating seats.

[0023] Furthermore, the smoke exhaust check valve further comprises:

[0024] A connecting rod, both ends of which are fixed inside the two sets of rotating seats;

[0025] A torsion spring is installed on the outside of the connecting rod, and the support leg end of the torsion spring is located inside the two sets of fixing plates.

[0026] Furthermore, the smoke exhaust check valve further comprises:

[0027] The two groups of through grooves are symmetrically arranged on both sides of the support plate, and the two groups of valve plates are located above the two groups of through grooves.

[0028] The first convex edges, two groups of the first convex edges are symmetrically fixed on the upper part of the support plate and matched with the positions of the two groups of through grooves, and the upper parts of the two groups of the first convex edges are in contact with the lower parts of the two groups of rubber pads.

[0029] Compared with the above-mentioned background technology, the smoke exhaust check valve provided in the present application includes a valve body, a valve plate and a rubber pad. The rubber pad is a hollow structure and the material is silicone. The hollow silicone rubber pad can achieve the effect of buffering and noise reduction when the valve plate is closed and flipped.

[0030] The utility model provides a smoke exhaust check valve. Compared with the prior art, it has the following beneficial effects:

[0031] A smoke exhaust check valve, wherein two sets of valve plates are flipped downward, a rubber pad is in contact with a first convex edge, and the rubber pad with a hollow structure can effectively absorb sound waves through an inner cavity and a silicone material, so that the two sets of valve plates have good anti-fall buffering properties when resetting and avoid the generation of noise.

[0032] A smoke exhaust check valve, which divides a valve body into a valve seat and a mounting seat, and limits the position through a mounting groove, a triangular block and a second convex edge. This structure can realize rapid assembly of the valve body structure in the check valve during production, and when the internal structure of the smoke exhaust check valve is damaged, the valve seat can be quickly removed for inspection and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a smoke exhaust check valve;

[0034] Figure 2 A top view of a smoke exhaust check valve;

[0035] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0036] Figure 4 It is a structural schematic diagram of a valve body in a smoke exhaust check valve;

[0037] Figure 5 It is a schematic diagram of the upper structure of a valve plate in a smoke exhaust check valve;

[0038] Figure 6 It is a schematic diagram of the lower structure of a valve plate in a smoke exhaust check valve;

[0039] Figure 7 It is a structural schematic diagram of a valve seat in a smoke exhaust check valve;

[0040] Figure 8 The figure is a structural schematic diagram of a mounting seat in a smoke exhaust check valve.

[0041] In the figure: 1. valve body; 2. valve plate; 3. rubber pad; 4. rotating seat; 5. cover plate; 6. connecting rod; 7. torsion spring; 8. support plate; 9. through groove; 10. first flange; 11. fixing plate; 12. counterweight plate; 20. valve seat; 21. second flange; 30. mounting seat; 31. extension seat; 32. mounting groove; 33. triangular block. DETAILED DESCRIPTION

[0042] 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.

[0043] See also Figure 1-8The utility model provides a technical solution for a smoke exhaust check valve: a smoke exhaust check valve, comprising a valve body 1, a valve plate 2, a rubber pad 3, a fixed plate 11, a counterweight plate 12, a support plate 8, a rotating seat 4, a cover plate 5, a connecting rod 6, a torsion spring 7, a through groove 9, and a first convex edge 10. Specifically, the valve plate 2 and the through groove 9 are both fan-shaped structures, the support plate 8 is an inclined structure, the rubber pad 3 is a hollow structure, and the material is silicone.

[0044] The valve body 1 includes a valve seat 20, a second flange 21, a mounting seat 30, an extension seat 31, a mounting groove 32 and a triangular block 33. Specifically, the mounting seat 30 can be fixedly installed by bolts, and the second flange 21 is rotated into the mounting groove 32 of the extension seat 31 from the open end, and then the valve seat 20 is loosened, so that the valve seat 20 falls between the mounting groove 32 and the triangular block 33 by its own gravity, and the second flange 21 is limited by the triangular block 33; and the valve seat 20 is lifted up and rotated in the opposite direction, so that the second flange 21 moves out of the mounting groove 32, so that the valve seat 20 can be removed. This structure can realize the rapid assembly of the valve body structure in the check valve during production, and when the internal structure of the smoke exhaust check valve is damaged, the valve seat 20 can be quickly removed for inspection and replacement.

[0045] The counterweight plate 12 increases the weight of the valve plate 2. The two sets of valve plates 2 and the two ends of the connecting rod 6 are installed inside the two sets of rotating seats 4. The upper parts of the two sets of rotating seats 4 can be blocked by two sets of cover plates 5 and fixed with screws. This structure facilitates the assembly and disassembly of the valve plate 2.

[0046] At the junction of the two groups of rubber pads 3 and the two groups of first convex edges 10, the hollow structure of the rubber pads 3 can effectively absorb sound waves through the inner cavity and the silicone material, so that the two groups of valve plates 2 have good anti-fall and buffering properties when resetting, and avoid the generation of noise.

[0047] The actual working condition of the smoke exhaust check valve is as follows: the airflow is from bottom to top, and the airflow passes through two groups of through grooves 9 to lift up two groups of valve plates 2 to flip upward, and squeeze the two groups of leg ends of the torsion spring 7;

[0048] After the airflow disappears, the two sets of supporting legs of the torsion spring 7 push the two sets of valve discs 2 to flip downward, and the two sets of valve discs 2 and the support plate 8 are closed, so that the rubber pads 3 are in contact with the first convex edge 10. The hollow structure of the rubber pads 3 can effectively absorb sound waves through the inner cavity and the silicone material, so that the two sets of valve discs 2 have good anti-fall and buffering properties when resetting, and avoid the generation of noise. The two sets of valve discs 2 close the two sets of through grooves 9 through the rubber pads 3.

Claims

1. A smoke exhaust check valve, comprising a valve body (1), characterized in that: This includes: Valve plates (2), two groups of valve plates (2) are symmetrically rotatably connected inside the valve body (1), The two groups of rubber pads (3) are fixed to the lower edges of the two groups of valve plates (2). The bottoms of the two groups of rubber pads (3) are in contact with the valve body (1). Each group of rubber pads (3) has a hollow structure and is made of silicone. The two groups of rubber pads (3) provide good anti-fall and cushioning properties for the two groups of valve plates (2) when they are reset, and avoid the generation of noise.

2. A smoke exhaust check valve according to claim 1, characterized in that: Also includes: A fixing plate (11), wherein the fixing plate (11) is fixed on an upper portion of the valve plate (2); A counterweight plate (12), wherein the counterweight plate (12) is fixed to the lower part of the valve plate (2), and the rubber pad (3) is located outside the counterweight plate (12).

3. A smoke exhaust check valve according to claim 1, characterized in that: The valve body (1) comprises: A valve seat (20), wherein the valve seat (20) is located outside the two groups of valve plates (2); Second convex edges (21), two groups of the second convex edges (21) are symmetrically fixed on the outer surface of the valve seat (20).

4. A smoke exhaust check valve according to claim 3, characterized in that: The valve body (1) further comprises: A mounting seat (30), the mounting seat (30) being snap-fitted and connected to an upper portion of the valve seat (20); Extension seats (31), two groups of the extension seats (31) are symmetrically fixed on the outer surface of the mounting seat (30); Mounting grooves (32), each group of the mounting grooves (32) being disposed at the bottom of each group of the extension seats (31); Triangular blocks (33), each group of the triangular blocks (33) is fixed at the bottom of each group of mounting grooves (32), and each group of the second convex edges (21) is located between each group of mounting grooves (32) and each group of triangular blocks (33).

5. The smoke exhaust check valve according to claim 1, characterized in that: Also includes: A support plate (8), the support plate (8) being fixed inside the valve seat (20); Rotating seats (4), the two sets of rotating seats (4) being fixed at two ends of the support plate (8), and the two ends of the two sets of valve plates (2) being rotatably connected inside the two sets of rotating seats (4); Cover plates (5), wherein two groups of cover plates (5) are fixed on the upper parts of two groups of rotating seats (4).

6. The smoke exhaust check valve according to claim 1, characterized in that: Also includes: A connecting rod (6), wherein both ends of the connecting rod (6) are fixed inside the two sets of rotating seats (4); A torsion spring (7), wherein the torsion spring (7) is mounted on the outside of the connecting rod (6), and the support leg ends of the torsion spring (7) are located inside the two sets of fixing plates (11).

7. The smoke exhaust check valve according to claim 1, characterized in that: Also includes: Through grooves (9), two groups of the through grooves (9) are symmetrically arranged on both sides of the support plate (8), and the two groups of valve plates (2) are located above the two groups of through grooves (9); The first flanges (10) are symmetrically fixed to the upper part of the support plate (8) and are adapted to the positions of the two groups of through grooves (9). The upper parts of the two groups of the first flanges (10) are in contact with the lower parts of the two groups of rubber pads (3).

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