Impact-resistant check valve

Abstract

The impact-resistant check valve comprises a check valve body, flange plates are fixedly connected to the left side and the right side of the check valve body respectively, mounting holes are formed in the surfaces of the flange plates respectively, a reserved hole is formed in the middle end of the check valve body, a fixing pipe is fixedly connected to the right side of an inner cavity of the check valve body, and the fixing pipe is fixedly connected to the left side of the inner cavity of the check valve body. An inner cavity of the fixing pipe is movably connected with a damping shock absorber, the surface of the damping shock absorber is sleeved with a damping shock absorption spring, and the left side of the damping shock absorber is fixedly connected with a blocking plate. An inner cavity of a fixing pipe is movably connected with a damping shock absorber, the surface of the damping shock absorber is sleeved with a damping shock absorption spring, the left side of the damping shock absorber is fixedly connected with a blocking plate, a second through hole is formed in the surface of the blocking plate, and a first through hole is formed in the position, located on the outer side of the second through hole, of the surface of the blocking plate; and the buffering effect is achieved, and therefore the impact force of water flow can be buffered.

Description

Technical Field

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

[0002] A check valve is a valve whose opening and closing part is a circular disc and which relies on its own weight and medium pressure to produce movement to block the backflow of the medium. It is an automatic valve, also known as a non-return valve, a one-way valve, a reflux valve or an isolation valve. The movement of the disc is divided into lift type and swing type. The lift check valve is similar to the stop valve in structure, only lacking a valve stem to drive the disc. The medium enters from the inlet end (the swing check valve has a disc that is inclined and can rotate around the axis, and its working principle is similar to that of the lift check valve. Check valves are often used as bottom valves of pumping devices to prevent the backflow of water. Check valves are used in combination with stop valves to play a role of safety isolation. The disadvantage is that the resistance is large and the sealing is poor when closed;

[0003] However, the existing check valve does not have the effect of absorbing the impact force of water flow, so the check valve is easily damaged by the impact of water flow, which in turn reduces the service life of the check valve and makes it inconvenient for people to use. Therefore, we propose an impact-resistant check valve. Utility Model Content

[0004] The utility model aims to provide an impact-resistant check valve, which has the advantage of impact resistance and solves the problem that the existing check valve has no effect of absorbing the impact force of water flow, so that the check valve is easily damaged due to the impact of water flow, which leads to a decrease in the service life of the check valve and inconvenience for people to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impact-resistant check valve, comprising a check valve body, the left and right sides of the check valve body are fixedly connected with flanges, the surfaces of the flanges are provided with mounting holes, the middle end of the check valve body is provided with a reserved hole, the right side of the inner cavity of the check valve body is fixedly connected with a fixing tube, the inner cavity of the fixing tube is movably connected with a damping shock absorber, the surface of the damping shock absorber is sleeved with a damping shock absorber spring, the left side of the damping shock absorber is fixedly connected with a baffle plate, the surface of the baffle plate is provided with a second through hole, and the surface of the baffle plate and located on the outside of the second through hole is provided with a first through hole.

[0006] Preferably, the outer surface of the reserved hole is sprayed with a first corrosion-resistant layer, the outer surface of the first corrosion-resistant layer is sprayed with a second corrosion-resistant layer, and the outer surface of the second corrosion-resistant layer is sprayed with a third corrosion-resistant layer.

[0007] Preferably, the material of the first corrosion-resistant layer is an epoxy resin coating layer, the material of the second corrosion-resistant layer is a polyurethane waterproof coating layer, and the material of the third corrosion-resistant layer is a nano-ceramic coating layer.

[0008] Preferably, the mounting holes are circular in structure and there are eight of them.

[0009] Preferably, the thickness of the first corrosion-resistant layer and the second corrosion-resistant layer is 0.11 cm-0.14 cm, and the thickness of the third corrosion-resistant layer is 0.12 cm-0.15 cm.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model is connected with a damping shock absorber through the inner cavity of a fixed tube, a damping shock absorber spring is sleeved on the surface of the damping shock absorber, a blocking plate is fixedly connected to the left side of the damping shock absorber, a second through hole is opened on the surface of the blocking plate, a first through hole is opened on the surface of the blocking plate and located on the outside of the second through hole, which has a buffering effect, thereby buffering the impact force of the water flow, solving the problem that the existing check valve does not have the effect of damping the impact force of the water flow, so that the check valve is easily damaged due to the impact of the water flow, which leads to a reduction in the service life of the check valve and inconvenience for people to use.

[0012] 2. The utility model has flanges fixedly connected to the left and right sides of the check valve body, mounting holes are provided on the surfaces of the flanges, and a reserved hole is provided at the middle end of the check valve body, which has the effect of unblocking water sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the damping shock absorber of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the second corrosion-resistant layer of the utility model.

[0016] In the figure: 1. check valve body; 2. flange; 3. mounting hole; 4. reserved hole; 5. baffle plate; 6. first through hole; 7. second through hole; 8. damping shock absorber; 9. damping shock absorber spring; 10. fixing pipe; 11. first corrosion-resistant layer; 12. second corrosion-resistant layer; 13. third corrosion-resistant layer. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-3 A shock-resistant check valve comprises a check valve body 1, a flange 2 is fixedly connected to the left and right sides of the check valve body 1, a mounting hole 3 is provided on the surface of the flange 2, a reserved hole 4 is provided at the middle end of the check valve body 1, a fixed pipe 10 is fixedly connected to the right side of the inner cavity of the check valve body 1, a damping shock absorber 8 is movably connected to the inner cavity of the fixed pipe 10, a damping shock absorber 8 is sleeved with a damping shock absorber spring 9 on the surface of the damping shock absorber 8, a baffle plate 5 is fixedly connected to the left side of the damping shock absorber 8, a second through hole 7 is provided on the surface of the baffle plate 5, a first through hole 6 is provided on the surface of the baffle plate 5 and located outside the second through hole 7, and a reserved hole 4 is provided. The outer surface is sprayed with a first corrosion-resistant layer 11, the outer surface of the first corrosion-resistant layer 11 is sprayed with a second corrosion-resistant layer 12, the outer surface of the second corrosion-resistant layer 12 is sprayed with a third corrosion-resistant layer 13, the first corrosion-resistant layer 11 is made of an epoxy resin coating layer, the second corrosion-resistant layer 12 is made of a polyurethane waterproof coating layer, the third corrosion-resistant layer 13 is made of a nano-ceramic coating layer, the mounting holes 3 are circular structures, and there are eight of them, the thickness of the first corrosion-resistant layer 11 and the second corrosion-resistant layer 12 is 0.11cm-0.14cm, and the thickness of the third corrosion-resistant layer 13 is 0.12cm-0.15cm.

[0019] When in use, a damping shock absorber 8 is movably connected to the inner cavity of the fixed tube 10, a damping shock absorber spring 9 is sleeved on the surface of the damping shock absorber 8, a blocking plate 5 is fixedly connected to the left side of the damping shock absorber 8, a second through hole 7 is opened on the surface of the blocking plate 5, and a first through hole 6 is opened on the surface of the blocking plate 5 and located on the outside of the second through hole 7, which has a buffering effect, thereby buffering the impact force of the water flow, solving the problem that the existing check valve does not have the effect of shock-absorbing the impact force of the water flow, which makes the check valve easily damaged due to the impact of the water flow, thereby reducing the service life of the check valve and making it inconvenient for people to use.

[0020] 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. An impact-resistant check valve, comprising a check valve body (1), characterized in that: The left and right sides of the check valve body (1) are fixedly connected to flanges (2), the surfaces of the flanges (2) are provided with mounting holes (3), the middle end of the check valve body (1) is provided with a reserved hole (4), the right side of the inner cavity of the check valve body (1) is fixedly connected to a fixing pipe (10), the inner cavity of the fixing pipe (10) is movably connected to a damping shock absorber (8), the surface of the damping shock absorber (8) is sleeved with a damping shock absorber spring (9), the left side of the damping shock absorber (8) is fixedly connected to a baffle plate (5), the surface of the baffle plate (5) is provided with a second through hole (7), and the surface of the baffle plate (5) and located outside the second through hole (7) is provided with a first through hole (6).

2. The impact-resistant check valve according to claim 1, characterized in that: The outer surface of the reserved hole (4) is sprayed with a first corrosion-resistant layer (11), the outer surface of the first corrosion-resistant layer (11) is sprayed with a second corrosion-resistant layer (12), and the outer surface of the second corrosion-resistant layer (12) is sprayed with a third corrosion-resistant layer (13).

3. The impact-resistant check valve according to claim 2, characterized in that: The material of the first corrosion-resistant layer (11) is an epoxy resin coating layer, the material of the second corrosion-resistant layer (12) is a polyurethane waterproof coating layer, and the material of the third corrosion-resistant layer (13) is a nano-ceramic coating layer.

4. The impact-resistant check valve according to claim 1, characterized in that: The mounting holes (3) are circular in structure and are eight in number.

5. The impact-resistant check valve according to claim 2, characterized in that: The thickness of the first corrosion-resistant layer (11) and the second corrosion-resistant layer (12) is 0.11 cm-0.14 cm, and the thickness of the third corrosion-resistant layer (13) is 0.12 cm-0.15 cm.

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