A check valve

Abstract

The utility model discloses a check valve, comprising: a valve body, a valve cover and a valve disc, wherein a medium flow channel is arranged in the valve body, the valve disc is arranged inside the valve body and divides the medium flow channel into an inlet flow channel and an outlet flow channel, the valve cover is arranged on the valve body, an integrally formed mounting hole is arranged inside the valve body, a mounting assembly matched with the mounting hole is arranged on the valve disc, and the valve disc is movably connected to the valve body through the mounting assembly. Through this arrangement, by integrally forming the mounting hole inside the valve body and arranging the valve disc matched with the mounting hole, the actual advantage of reducing the need for opening and grinding the valve body is achieved, and the overall strength is more stable and the processing is more convenient.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a check valve. Background Art

[0002] A check valve is also called a one-way valve or a non-return valve. When liquid flows through a check valve, it can only flow in one direction, but not in both directions. It is often used in pipelines to control the flow direction of liquid in the pipeline.

[0003] In the prior art, the valve disc in the check valve is usually fixed by opening a hole in the valve body at a later stage and inserting a pin through the valve disc to fix the position of the valve disc. This requires additional hole opening and polishing of the valve body, and the addition of parts such as the pin, which is more complicated and more prone to failure. Therefore, there is room for improvement. Summary of the invention

[0004] In view of the above problems, the present application proposes a check valve, which achieves the practical advantage of reducing the need for opening holes and grinding the valve body by integrally forming a mounting hole inside the valve body and providing a valve flap adapted to the mounting hole, thereby achieving the effect of more stable overall strength and easier processing; the check valve is specifically implemented through the following technical solutions:

[0005] A check valve comprises: a valve body, a valve cover and a valve disc, wherein a medium flow channel is arranged in the valve body, the valve disc is arranged inside the valve body and separates the medium flow channel into an inlet flow channel and an outlet flow channel, the valve cover is arranged on the valve body, an integrally formed mounting hole is arranged inside the valve body, a mounting assembly matching the mounting hole is arranged on the valve disc, and the valve disc is movably connected to the valve body through the mounting assembly.

[0006] It is further configured that the valve flap includes a main body and the mounting assembly, the mounting assembly includes a connecting rod and a limiting protrusion, the connecting rods are provided in two, the outer ends of the connecting rods are integrally formed with the main body, the inner end of the connecting rod is provided as a circular base, and the limiting protrusion is provided on the outer side of the circular base. Through this configuration, the overall structural strength of the valve flap is sufficient, and it can be movably installed on the mounting hole inside the valve body.

[0007] It is further configured that the main body, connecting rod and limiting protrusion are all integrally formed structures, and through this configuration, the overall stability and strength are improved.

[0008] It is further configured that the limiting protrusion is adapted to the mounting hole. When the valve flap is arranged in the valve body, the limiting protrusion is clamped inside the mounting hole. Through this configuration, the valve flap can achieve circumferential rotation with the extending direction of the limiting protrusion as the axis, thereby realizing the basic opening and closing function.

[0009] It is further configured that an active gap and a locking groove are provided between the circular bases of the two connecting rods, and a locking block is also provided corresponding to the locking groove. When the limiting protrusion is clamped in the mounting hole, the locking block is arranged in the locking groove. Through this configuration, the active gap enables the valve flap to be easily deformed during installation and inserted into the mounting hole. The locking groove is supplemented to prevent the valve flap from being deformed and escaping from the mounting hole, and the overall strength is enhanced.

[0010] It is further configured that a limiting flange is provided on the outer side of the locking block, and a track groove is provided on the inner wall of the locking groove corresponding to the limiting flange. The locking block is engaged with the locking groove through the cooperation of the limiting flange and the track groove. Through this configuration, a certain guiding effect is played, and installation is convenient.

[0011] It is further arranged that the valve flap is also provided with an arc groove which plays a buffering role. Through this arrangement, a certain buffering effect is played, making the overall structure more stable.

[0012] It is further arranged that a sealing ring is arranged on the contact surface of the valve cover and the valve body, and this arrangement improves the sealing performance.

[0013] It is further arranged that the valve cover and the valve body are connected by a threaded connection that can be opened and disassembled. Through this arrangement, disassembly is convenient, and the opening used to install the valve cover is also used for installing the valve flap.

[0014] The check valve described above achieves the practical advantage of reducing the need for opening and grinding the valve body by integrally forming a mounting hole inside the valve body and providing a valve flap that matches the mounting hole, thereby achieving a more stable overall strength and easier processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of the valve disc structure of a check valve provided in an embodiment of the present application;

[0017] Figure 2 A cross-sectional view of a check valve provided in an embodiment of the present application Figure 1 ;

[0018] Figure 3 A cross-sectional view of a check valve provided in an embodiment of the present application Figure 2 .

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Valve body; 2. Valve cover; 3. Valve disc; 4. Medium flow channel; 5. Inlet flow channel; 6. Outlet flow channel; 7. Mounting hole; 8. Mounting assembly; 9. Main body; 10. Connecting rod; 11. Limiting protrusion; 12. Circular base; 13. Active gap; 14. Locking groove; 15. Locking block; 16. Limiting flange; 17. Track groove; 18. Arc groove; 19. Sealing ring. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0024] Please also read Figures 1 to 3 A check valve comprises: a valve body 1, a valve cover 2 and a valve disc 3, wherein a medium flow channel 4 is arranged in the valve body 1, the valve disc 3 is arranged inside the valve body 1, and the medium flow channel 4 is divided into an inlet flow channel 5 and an outlet flow channel 6, the valve cover 2 is arranged on the valve body 1, an integrally formed mounting hole 7 is arranged inside the valve body 1, a mounting component 8 matched with the mounting hole 7 is arranged on the valve disc 3, and the valve disc 3 is movably connected to the valve body 1 through the mounting component 8.

[0025] See also Figures 1 to 3In this embodiment, the valve flap 3 includes a main body 9 and the mounting assembly 8, and the mounting assembly 8 includes a connecting rod 10 and a limiting protrusion 11. The connecting rod 10 is provided with two, and the outer ends of the connecting rods 10 are integrally formed with the main body 9, and the inner ends of the connecting rods 10 are provided with a circular base 12, and the limiting protrusion 11 is provided on the outer side of the circular base 12. In this way, the various parts of the valve flap 3 are integrally formed structures, which have high stability and structural strength; the main body 9, the connecting rod 10 and the limiting protrusion 11 are all integrally formed structures; the limiting protrusion 11 is adapted to the mounting hole 7. When the valve flap 3 is arranged in the valve body 1, the limiting protrusion 11 is clamped in the mounting hole 7. When the limiting protrusion 11 is clamped in the mounting hole 7, it can rotate circumferentially, so it can drive the opening and closing of the valve flap 3 to control the conduction and closure of the entire valve; an active gap 13 and a locking groove 14 are arranged between the circular bases 12 of the two connecting rods 10, and a locking block 15 is further arranged corresponding to the locking groove 14. When the limiting protrusion 11 is clamped in the mounting hole 7, the locking block 15 is arranged in the locking groove 14. The active gap 13 is arranged in this way so that the two connecting rods 10, and a certain gap is formed between the connecting rod 10 and the movable gap 13, and a pressure is applied to the connecting rod 10 to make the connecting rod 10 bend according to the movable gap 13, so that the limiting protrusion 11 on the connecting rod 10 is convenient to be engaged in the mounting hole 7. In addition, when the limiting protrusion 11 is completely engaged in the mounting hole 7, in order to prevent the connecting rod 10 from being deformed too much again, causing the limiting protrusion 11 to fall out, the locking block 15 is provided to fill the movable gap 13, so as to increase the strength; a limiting flange 16 is provided on the outer side of the locking block 15, and the inner wall of the locking groove 14 corresponds to the limiting protrusion The edge 16 is provided with a track groove 17, and the locking block 15 is engaged with the locking groove 14 through the cooperation of the limiting flange 16 and the track groove 17. In addition, in order to better enable the locking block 15 to be arranged between the two connecting rods 10, the locking groove 14 is provided, and the locking groove 14 is also provided with a track groove 17, which plays a certain guiding role for the insertion of the locking block 15; the valve disc 3 is also provided with an arc groove 18 which plays a buffering role; the valve cover 2 is provided with a sealing ring 19 on the contact surface of the valve body 1; the valve cover 2 and the valve body 1 are connected by a threaded connection that can be opened and disassembled.

[0026] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A check valve, comprising: A valve body (1), a valve cover (2) and a valve flap (3), wherein a medium flow channel (4) is arranged in the valve body (1), the valve flap (3) is arranged in the valve body (1) and divides the medium flow channel (4) into an inlet flow channel (5) and an outlet flow channel (6), the valve cover (2) is arranged on the valve body (1), and is characterized in that: an integrally formed mounting hole (7) is arranged in the valve body (1), a mounting component (8) adapted to the mounting hole (7) is arranged on the valve flap (3), and the valve The flap (3) is movably connected to the valve body (1) through the mounting assembly (8); the valve flap (3) comprises a main body (9) and the mounting assembly (8); the mounting assembly (8) comprises a connecting rod (10) and a limiting protrusion (11); the connecting rod (10) is provided in two pieces, the outer ends of the connecting rods (10) are integrally formed with the main body (9), the inner ends of the connecting rods (10) are provided as a circular base (12), and the limiting protrusion (11) is provided on the outer side of the circular base (12).

2. A check valve according to claim 1, characterized in that The main body (9), connecting rod (10) and limiting protrusion (11) are all integrally formed structures.

3. A check valve according to claim 1, characterized in that The limiting protrusion (11) is adapted to the mounting hole (7), and when the valve flap (3) is arranged in the valve body (1), the limiting protrusion (11) is clamped in the mounting hole (7).

4. A check valve according to claim 3, characterized in that A movable gap (13) and a locking groove (14) are provided between the circular bases (12) of the two connecting rods (10), and a locking block (15) is also provided corresponding to the locking groove (14); when the limiting protrusion (11) is clamped in the interior of the mounting hole (7), the locking block (15) is arranged in the locking groove (14).

5. A check valve according to claim 4, characterized in that The outer side of the locking block (15) is provided with a limiting flange (16), and the inner wall of the locking groove (14) is provided with a track groove (17) corresponding to the limiting flange (16); the locking block (15) is engaged in the locking groove (14) through the cooperation between the limiting flange (16) and the track groove (17).

6. A check valve according to claim 1, characterized in that The valve flap (3) is also provided with an arc-shaped groove (18) which plays a buffering role.

7. A check valve according to claim 1, characterized in that A sealing ring (19) is provided on the contact surface between the valve cover (2) and the valve body (1).

8. A check valve according to claim 1, characterized in that The valve cover (2) and the valve body (1) are connected by a threaded connection that can be opened and disassembled.

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