Check valve

Abstract

The check valve comprises a shell, a connecting cylinder is arranged at the left end of the shell, a mounting seat is arranged at the right end of the shell, the shell is of a structure with a rightward opening, a through groove is formed in the left wall of the shell, the connecting cylinder is of a left-right communicated structure, the inner diameter of the connecting cylinder is consistent with the size of the through groove, a plurality of fan-shaped rotating plates are arranged in the through groove, and each rotating plate is of a one-way rotating structure. A buckle is arranged on the periphery of the connecting cylinder, a protrusion is arranged at the top end of the buckle and faces the connecting cylinder, a protruding ring is arranged on the outer wall of the connecting cylinder, a rotating shaft of the rotating plate is transversely installed on the bottom wall of the shell, and limiting parts are arranged at the two ends of the rotating shaft. The traditional operation that screws need to be screwed on the four corners of the mounting base is replaced with the screwing pieces, and mounting is more convenient and faster. The aluminum cigarette tube penetrates through the connecting cylinder, the buckle is clamped on the outer surface of the aluminum cigarette paper, the traditional operation that the aluminum cigarette paper is installed through a hoop and a bolt is replaced, installation is convenient, and the aluminum cigarette paper can be rapidly disassembled when needing to be repaired and maintained.

Description

Technical Field

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

[0002] Check valve is also known as air outlet, exhaust vent, and air hood. It refers to a device that is fixed to the top of the range hood with screws at the bottom and connected to a plastic telescopic smoke pipe at the top. It is generally used in the exhaust duct of the range hood in the home. The check valve is mainly composed of a valve body, a rocker, a valve cover, etc.

[0003] Traditional check valves are mostly installed by fixing the four corners with screws, which requires drilling, thus causing a certain degree of damage to the plate. When connecting the aluminum cigarette paper, a clamp is often used to wrap the aluminum cigarette paper around the valve, but the clamp is not easy to disassemble after installation. Utility Model Content

[0004] Technical issues solved

[0005] In view of the deficiencies of the prior art, the utility model provides a check valve which is adjustable by a single drive and reduces weight and space occupation.

[0006] Technical Solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a check valve, including a shell, a connecting cylinder is provided at the left end of the shell, a mounting seat is provided at the right end of the shell, the shell is a structure opening to the right, a through groove is provided on its left wall, the connecting cylinder is a structure communicating with the left and right, and its inner diameter is consistent with the size of the through groove, and a plurality of fan-shaped rotating plates are provided in the through groove, and the rotating plates are a one-way rotating structure.

[0008] Furthermore, a buckle is provided on the outer periphery of the connecting tube, and a protrusion is provided on the top of the buckle, and the protrusion faces the direction of the connecting tube.

[0009] Furthermore, a raised ring is provided on the outer wall of the connecting tube.

[0010] Furthermore, the rotating shaft of the rotating plate is transversely mounted on the bottom wall of the shell, and both ends of the rotating shaft are provided with limiting parts.

[0011] Furthermore, a through hole is provided on the rotating plate at the center, and a through pipe is provided in the connecting tube.

[0012] Furthermore, a screw piece is provided in the through hole and the through tube, one end of the screw piece is an arc-shaped structure and the edges at both ends are forked, and a thread is provided on the other end of the screw piece.

[0013] Furthermore, a limiting bottom protrusion is provided at one end of the rotating plates that contacts each other.

[0014] Beneficial Effects

[0015] The utility model provides a check valve, which has the following beneficial effects:

[0016] 1. The screwing part replaces the traditional operation of screwing screws on the four corners of the mounting base, making installation more convenient.

[0017] 2. Pass the aluminum cigarette tube through the connecting tube and clamp the buckle on the outer surface of the aluminum cigarette paper, which replaces the traditional operation of using clamps and bolts to install the aluminum cigarette paper. It is easy to install and can be quickly disassembled when repair and maintenance is required (the aluminum cigarette paper can be removed by bending the buckle away from the connecting tube).

[0018] 3. Reasonable structure. Holes are opened on the rotating plate. On the one hand, screws can be installed through them, and on the other hand, the opening and closing of the rotating plate is not blocked. The contacting parts of the rotating plates are provided with limiting bottom convexities to prevent the rotating plates from rotating in the reverse direction, so that they can only rotate in the forward direction to complete the smoke backflow prevention operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the connecting tube structure of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the limiting bottom convex of the utility model.

[0023] In the figure: 1-shell; 2-connecting tube; 3-mounting seat; 4-through groove; 5-rotating plate; 6-buckle; 7-protrusion; 8-protrusion ring; 9-rotating shaft; 10-limiting part; 11-through hole; 12-through pipe; 13-forked shape; 14-thread; 15-limiting bottom convex. DETAILED DESCRIPTION

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0025] See also Figures 1 to 3 The utility model provides a technical solution: a check valve, comprising a shell 1, a connecting tube 2 is provided at the left end of the shell 1, a mounting seat 3 is provided at the right end of the shell 1, the shell 1 is a structure opening to the right, a through groove 4 is provided on its left wall, the connecting tube 2 is a structure communicating with the left and right, and its inner diameter is consistent with the size of the through groove 4, a plurality of fan-shaped rotating plates 5 are provided in the through groove 4, the rotating plates 5 are a unidirectional rotating structure, and their unidirectional rotation is a check valve.

[0026] Furthermore, a buckle 6 is provided on the outer periphery of the connecting tube 2, a protrusion 7 is provided on the top of the buckle 6, and the protrusion 7 faces the direction of the connecting tube 2. A protrusion ring 8 is provided on the outer wall of the connecting tube 2, and the protrusion ring 8 is used to clamp one end of the aluminum smoke pipe, and after clamping, it is pressure-tested and fixed by the buckle 6 and the protrusion 7.

[0027] Furthermore, the rotating shaft 9 of the rotating plate 5 is transversely mounted on the bottom wall of the shell 1 , and both ends of the rotating shaft 9 are provided with limiting parts 10 , and both ends of the rotating shaft 9 rotate in the limiting parts 10 , and the limiting parts 10 limit it to prevent it from tilting.

[0028] Furthermore, a through hole 11 is provided on the rotating plate 5 located at the center, and the structure is reasonable. It does not block the rotation of the rotating plate 5 and allows the screw to pass through. A through pipe 12 is provided in the connecting tube 2. The through hole 11 and the through pipe 12 are mainly used to install the screw. A screw is provided in the through hole 11 and the through pipe 12. One end of the screw is an arc-shaped structure and its two end edges are forked 13. A thread 14 is provided on the other end of the screw. The arc-shaped end of the screw is clamped on the decorative panel, and its forked claw rests on the inner wall of the decorative panel. A nut can be installed on the thread 14 of the screw to fix the screw, which replaces the traditional operation that requires screws to be installed at the four corners of the mounting base 3.

[0029] Furthermore, a limiting bottom protrusion 15 is provided at one end of the rotating plates 5 that are in contact with each other, and the limiting bottom protrusion 15 blocks the rotating plates 5 that are in contact with each other from rotating in the reverse direction (toward the connecting tube 2 ).

[0030] Working principle: one end of the screw passes through the through pipe 12 and the through hole 11 to contact the inner wall of the decorative plate, and the other end of the screw is fixed by a nut. The aluminum smoke pipe is installed on the connecting tube 2. When the smoke in the aluminum smoke pipe contacts the rotating plate 5, the rotating plate 5 is pushed open, the rotating plate 5 rotates forward, and the smoke is discharged.

[0031] The decorative panel can be a suspended ceiling or a vertical wall. When it is a suspended ceiling, the check valves are distributed in the up-and-down direction; when it is a vertical wall, the check valves are distributed in the left-and-right direction.

[0032] 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 check valve, comprising a housing, characterized in that: A connecting tube is provided at the left end of the shell, and a mounting seat is provided at the right end of the shell. The shell is a structure opening to the right, and a through groove is provided on its left wall. The connecting tube is a structure communicating with the left and right sides, and its inner diameter is consistent with the size of the through groove. A number of fan-shaped rotating plates are provided in the through groove, and the rotating plates are a unidirectional rotating structure.

2. A check valve according to claim 1, characterized in that: A buckle is arranged on the outer periphery of the connecting tube, a protrusion is arranged on the top of the buckle, and the protrusion faces the direction of the connecting tube.

3. A check valve according to claim 1, characterized in that: A raised ring is arranged on the outer wall of the connecting cylinder.

4. A check valve according to claim 1, characterized in that: The rotating shaft of the rotating plate is transversely mounted on the bottom wall of the shell, and both ends of the rotating shaft are provided with limiting parts.

5. A check valve according to claim 1, characterized in that: A through hole is arranged on the rotating plate at the center, and a through pipe is arranged in the connecting cylinder.

6. A check valve according to claim 1, characterized in that: A screw piece is arranged in the through hole and the through pipe, one end of the screw piece is an arc-shaped structure and the edges of both ends thereof are forked, and a thread is arranged on the other end of the screw piece.

7. A check valve according to claim 1, characterized in that: One end of the rotating plates that contacts each other is provided with a limiting bottom convex.

Images