Pressure self-sealing swing check valve

Abstract

The utility model discloses a pressure self-sealing swing check valve, and relates to the technical field of check valves. The top of the valve body is provided with a top cover, the bottom of the top cover is fixedly connected with a positioning pin, the bottom of the positioning pin is rotatably connected with a rocker, one side of the rocker is provided with a valve clack, and one side of the valve body is fixedly provided with a valve seat matched with the valve clack for use; the size of the valve clack is larger than that of the valve seat, one side of the valve body is fixedly connected with a fixing rod, one end of the fixing rod is fixedly connected with a first magnetic block, and one side of the valve clack is fixedly connected with a second magnetic block used in cooperation with the first magnetic block. After the valve clack falls down, the first magnetic block and the second magnetic block attract each other, the stability of the valve clack is kept, the valve clack is effectively prevented from beating the valve seat in a reciprocating mode, the use safety of products is improved, meanwhile, the valve clack can be buffered through the first spring, the valve clack is prevented from directly impacting the inner wall of the valve body, and the impact strength is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, in particular to a pressure self-sealing swing check valve. Background Art

[0002] A check valve is a valve whose opening and closing parts are round discs and which rely on their own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the category of automatic valves and is also called non-return valve, one-way valve, reflux valve or isolation valve. The disc movement modes are divided into lifting type and swing type;

[0003] When the existing swing check valve is in use, when the pressures on both sides of the valve disc are close, the valve disc is prone to swing and saw, which affects the service life of the valve disc. Therefore, a pressure self-sealing swing check valve is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure self-sealing swing check valve. After the valve disc falls, the first magnetic block and the second magnetic block attract each other to keep the valve disc stable, effectively preventing the valve disc from reciprocatingly hitting the valve seat, thereby improving the safety of product use. At the same time, the first spring can be used to buffer the valve disc to prevent the valve disc from directly impacting the inner wall of the valve body, reducing the impact force, and solving the existing technical problems.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The pressure self-sealing swing check valve comprises: a valve body, a top cover is installed on the top of the valve body, a positioning pin is fixedly connected to the bottom of the top cover, a rocker is rotatably connected to the bottom of the positioning pin, a valve disc is installed on one side of the rocker, and a valve seat used in conjunction with the valve disc is fixedly installed on one side of the valve body;

[0007] The size of the valve flap is larger than the valve seat, and a fixing rod is fixedly connected to one side of the valve body, and a first magnetic block is fixedly connected to one end of the fixing rod, and a second magnetic block used in conjunction with the first magnetic block is fixedly connected to one side of the valve flap, and the ends of the first magnetic block and the second magnetic block that are close to each other attract each other, and by installing the first magnetic block and the second magnetic block between the valve flap and the valve body, after the valve flap falls, the first magnetic block and the second magnetic block attract each other to maintain the stability of the valve flap, effectively prevent the valve flap from reciprocatingly hitting the valve seat, and improve the safety of product use, and a buffer assembly is arranged between the first magnetic block and the second magnetic block.

[0008] As a further solution of the utility model, the buffer component block is a telescopic sleeve, and the telescopic sleeve is fixed on one side of the first magnetic block. A second spring is installed in the telescopic sleeve. The second spring is set to reduce the impact when the valve disc falls, and at the same time, the first magnetic block and the second magnetic block are separated to prevent them from touching each other. At the same time, the elastic force of the second spring is smaller than the attraction between the first magnetic block and the second magnetic block, so as to avoid offsetting the attraction between the first magnetic block and the second magnetic block.

[0009] As a further solution of the utility model, a sliding rod is inserted into one side of the valve flap, and the end of the sliding rod away from the second magnetic block is fixedly connected to the first spring, and the other end of the first spring is fixed to the valve flap. By installing the sliding rod and the first spring on the valve flap, the first spring is used to buffer the valve flap, thereby preventing the valve flap from directly impacting the inner wall of the valve body and reducing the impact force.

[0010] As a further solution of the utility model, a valve cover for limiting the top cover is installed on the top of the valve body.

[0011] As a further solution of the utility model, a sealing ring is provided between the top cover and the valve body, and the sealing ring is located below the valve cover.

[0012] As a further solution of the utility model, one end of the sliding rod away from the fixed rod is fixedly connected to a rubber pad.

[0013] In the present application, the medium enters the valve body through one side of the valve seat, pushes the valve disc open, and allows the medium to flow naturally. After the medium stops entering the valve body, the valve disc falls and cooperates with the valve seat to close the valve body to prevent the medium from flowing back. When the valve disc is quickly opened by the medium, the end of the slide rod on the valve disc contacts the inner wall of the valve body, and then the first spring is used to buffer the valve disc to prevent the valve disc from directly impacting the inner wall of the valve body, reducing the impact force and increasing the service life of the valve body and the valve disc. When the valve disc falls, the first magnetic block and the second magnetic block approach each other, and the second magnetic block first conflicts with the telescopic sleeve, and then the first magnetic block and the second magnetic block attract each other to keep the valve disc stable and avoid the phenomenon that the valve disc swings back and forth when the pressure on both sides of the valve disc is close to balance, effectively preventing the valve disc from reciprocatingly hitting the valve seat, thereby improving the safety of product use.

[0014] The embodiments of the present invention have the following beneficial effects:

[0015] In the utility model, by installing the first magnetic block and the second magnetic block between the valve disc and the valve body, after the valve disc falls, the first magnetic block and the second magnetic block attract each other to keep the valve disc stable, effectively preventing the valve disc from reciprocatingly hitting the valve seat, and improving the safety of product use;

[0016] In the utility model, by installing the slide rod and the first spring on the valve disc, the valve disc is buffered by the first spring, so as to prevent the valve disc from directly impacting the inner wall of the valve body and reduce the impact force;

[0017] In the utility model, after the valve flap falls, the first magnetic block and the second magnetic block attract each other to keep the valve flap stable, effectively preventing the valve flap from reciprocatingly hitting the valve seat, thereby improving the safety of product use. At the same time, the first spring can be used to buffer the valve flap, preventing the valve flap from directly impacting the inner wall of the valve body and reducing the impact force.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic cross-sectional view of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the enlarged structure of point A in one embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of a buffer assembly according to an embodiment of the utility model.

[0023] In the figure: 1. valve body; 2. valve seat; 3. valve disc; 4. sliding rod; 5. rocker; 6. positioning pin; 7. top cover; 8. sealing ring; 9. valve cover; 10. first spring; 11. fixing rod; 12. first magnetic block; 13. second magnetic block; 14. telescopic sleeve; 15. second spring. DETAILED DESCRIPTION

[0024] 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 of 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.

[0025] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0027] Embodiment 1

[0028] See also Figure 1-Figure 3 As shown, in this embodiment, a pressure self-sealing swing check valve is provided, comprising: a valve body 1, a top cover 7 is installed on the top of the valve body 1, a positioning pin 6 is fixedly connected to the bottom of the top cover 7, a rocker 5 is rotatably connected to the bottom of the positioning pin 6, a valve flap 3 is installed on one side of the rocker 5, a valve seat 2 used in conjunction with the valve flap 3 is fixedly installed on one side of the valve body 1, a medium enters the valve body 1 through one side of the valve seat 2, and the valve flap 3 is pushed open, so that the medium flows naturally, and after the medium stops entering the valve body 1, the valve flap 3 falls down, and cooperates with the valve seat 2 to close the valve body 1, so as to prevent the medium from flowing back;

[0029] The size of the valve flap 3 is larger than the valve seat 2. A fixing rod 11 is fixedly connected to one side of the valve body 1. One end of the fixing rod 11 is fixedly connected to a first magnetic block 12. A second magnetic block 13 used in conjunction with the first magnetic block 12 is fixedly connected to one side of the valve flap 3. The first magnetic block 12 and the second magnetic block 13 are attracted to each other at their respective ends. When the valve flap 3 falls, the first magnetic block 12 and the second magnetic block 13 are close to each other. The second magnetic block 13 first conflicts with the telescopic sleeve 14, and then the first magnetic block 12 and the second magnetic block 13 attract each other to maintain the stability of the valve flap 3 and avoid the phenomenon that the valve flap 3 swings back and forth when the pressure on both sides of the valve flap 3 is close to balance. A buffer assembly is arranged between the first magnetic block 12 and the second magnetic block 13.

[0030] Embodiment 2

[0031] Improved on the basis of embodiment 1: Refer to attached Figure 1-Figure 3 ,

[0032] In the utility model, the buffer component is a telescopic sleeve 14, and the telescopic sleeve 14 is fixed on one side of the first magnetic block 12. A second spring 15 is installed in the telescopic sleeve 14. The second spring 15 is set to reduce the impact of the valve disc 3 when it falls, and at the same time, the first magnetic block 12 and the second magnetic block 13 are separated to prevent them from touching each other. At the same time, the elastic force of the second spring 15 is smaller than the attraction between the first magnetic block 12 and the second magnetic block 13, so as to avoid offsetting the attraction between the first magnetic block 12 and the second magnetic block 13.

[0033] In particular, a sliding rod 4 is inserted into one side of the valve flap 3, and one end of the sliding rod 4 away from the second magnetic block 13 is fixedly connected to the first spring 10, and the other end of the first spring 10 is fixed to the valve flap 3. When the valve flap 3 is quickly opened by the medium, the end of the sliding rod 4 on the valve flap 3 contacts the inner wall of the valve body 1, and then the first spring 10 is used to buffer the valve flap 3 to prevent the valve flap 3 from directly impacting the inner wall of the valve body 1 and reduce the impact force.

[0034] It should be noted that a valve cover 9 for limiting the position of the top cover 7 is installed on the top of the valve body 1 , and the valve cover 9 is used to clamp and fix the top cover 7 .

[0035] In the utility model, a sealing ring 8 is provided between the top cover 7 and the valve body 1. The sealing ring 8 is located below the valve cover 9. The sealing ring 8 is used to prevent the medium from flowing out upwards.

[0036] In particular, one end of the slide rod 4 away from the fixed rod 11 is fixedly connected with a rubber pad, and the rubber pad further reduces the impact.

[0037] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. Pressure self-sealing swing check valve, characterized in that: include: A valve body (1), wherein a top cover (7) is mounted on the top of the valve body (1), a positioning pin (6) is fixedly connected to the bottom of the top cover (7), a rocker (5) is rotatably connected to the bottom of the positioning pin (6), a valve flap (3) is mounted on one side of the rocker (5), and a valve seat (2) used in conjunction with the valve flap (3) is fixedly mounted on one side of the valve body (1); The size of the valve flap (3) is larger than that of the valve seat (2); one side of the valve body (1) is fixedly connected to a fixing rod (11); one end of the fixing rod (11) is fixedly connected to a first magnetic block (12); one side of the valve flap (3) is fixedly connected to a second magnetic block (13) used in conjunction with the first magnetic block (12); the first magnetic block (12) and the second magnetic block (13) are attracted to each other at their respective ends; and a buffer component is arranged between the first magnetic block (12) and the second magnetic block (13).

2. The pressure self-sealing swing check valve according to claim 1, characterized in that: The buffer assembly shift block telescopic sleeve (14) is fixed on one side of the first magnetic block (12), and a second spring (15) is installed in the telescopic sleeve (14).

3. The pressure self-sealing swing check valve according to claim 1, characterized in that: A sliding rod (4) is inserted into one side of the valve flap (3), and one end of the sliding rod (4) away from the second magnetic block (13) is fixedly connected to a first spring (10), and the other end of the first spring (10) is fixed to the valve flap (3).

4. The pressure self-sealing swing check valve according to claim 1, characterized in that: A valve cover (9) for limiting the position of the top cover (7) is installed on the top of the valve body (1).

5. The pressure self-sealing swing check valve according to claim 4, characterized in that: A sealing ring (8) is provided between the top cover (7) and the valve body (1), and the sealing ring (8) is located below the valve cover (9).

6. The pressure self-sealing swing check valve according to claim 3, characterized in that: One end of the sliding rod (4) away from the fixing rod (11) is fixedly connected to a rubber pad.

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