One-way valve

Abstract

The utility model discloses a one-way valve. According to the technical scheme, the one-way valve comprises a valve body, a protruding block is arranged in the valve body. A valve clack is arranged between the convex blocks; an internal thread is arranged in the valve body; a sealing cover is arranged between the internal threads; the sealing cover is provided with an external thread; the sealing cover is connected with the valve clack through the left valve rod and the right valve rod; a spring is arranged between the left valve rod and the right valve rod, when the opening pressure of the valve body needs to be adjusted, the sealing cover can be rotated to move, and after the position of the sealing cover is adjusted, the valve clack can be opened under different pressure differences through the spring, so that the opening pressure of the valve clack is adjusted; the valve has the effect of adjusting the opening pressure of the valve body.

Description

Technical Field

[0001] The utility model relates to the field of valves, and more specifically to a check valve. Background Art

[0002] For a check valve, the fluid can only flow in from the inlet, and the medium at the outlet cannot flow back. The check valve is used in a hydraulic system to prevent the reverse flow of oil, or in a pneumatic system to prevent the reverse flow of compressed air. A certain pressure difference is required to open the valve flap inside the check valve. Currently, the opening pressure of some check valves is fixed, making it inconvenient to adjust the opening pressure of the valve body. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a check valve, which has the effect of facilitating the adjustment of the opening pressure of the valve body.

[0004] To achieve the above object, the utility model provides the following technical solution: A check valve includes a valve body, characterized in that: there are convex blocks arranged inside the valve body; a valve flap is arranged between the convex blocks; there is an internal thread inside the valve body; a closing cover is arranged between the internal threads; there is an external thread on the closing cover; the closing cover and the valve flap are connected by a left valve rod and a right valve rod; one side of the right valve rod is located inside the left valve rod; a spring is arranged between the left valve rod and the right valve rod.

[0005] The utility model is further arranged as follows: The valve body has an inlet, an outlet, and a through port; there is a first thread at the inlet; a second thread is arranged at the outlet; the convex blocks and the valve flap are in a stepped shape; the valve flap cooperates with the convex blocks; one side of the right valve rod is fixedly connected to the closing cover.

[0006] The utility model is further arranged as follows: A groove is formed on the left valve rod; one end of the right valve rod is located inside the groove; a spring is also arranged inside the groove; one end of the spring is fixedly connected to the left valve rod; the other end of the spring is fixedly connected to the right valve rod; there is a rotating port on the closing cover; an extending port is formed on the valve body.

[0007] The utility model is further arranged as follows: A support bar is arranged on one side of the convex block; the support bars are symmetrically arranged inside the valve body; the through port is located on one side of the support bar.

[0008] In summary, the utility model has the following beneficial effects: The valve flap and the convex blocks enable the medium to only enter from the inlet and leave the valve body through the through port and the outlet. When it is necessary to adjust the opening pressure of the valve body, the closing cover can be rotated to move the closing cover. After the closing cover adjusts its position, the valve flap can be opened under different pressure differences through the spring, thereby adjusting the opening pressure of the valve flap. Description of the Drawings

[0009] Figure 1 is a schematic structural diagram of this embodiment;

[0010] Figure 2 is a schematic diagram of the valve flap opening in this embodiment;

[0011] Figure 3 is a schematic diagram of the valve flap located on the support bar in this embodiment.

[0012] Reference numerals: 1, valve body; 2, convex block; 3, valve flap; 4, internal thread; 5, closing cover; 6, external thread; 7, left valve stem; 8, right valve stem; 9, spring; 10, inlet; 11, outlet; 12, through port; 13, first thread; 14, second thread; 15, groove; 16, rotating port; 17, extending port; 18, support bar. Specific embodiments

[0013] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0014] This embodiment discloses a check valve. As Figures 1 to 2 shown, the present utility model has the effect of facilitating the adjustment of the opening pressure of the valve body, and includes a valve body 1; a convex block 2 is arranged inside the valve body 1; a valve flap 3 is arranged between the convex blocks 2; an internal thread 4 is arranged inside the valve body 1; a closing cover 5 is arranged between the internal threads 4; an external thread 6 is arranged on the closing cover 5; the closing cover 5 is connected to the valve flap 3 through a left valve stem 7 and a right valve stem 8; one side of the right valve stem 8 is located inside the left valve stem 7; a spring 9 is arranged between the left valve stem 7 and the right valve stem 8.

[0015] By adopting the above technical solutions: the valve flap 3 is connected to the convex block 2 through the left valve stem 7, the right valve stem 8, and the spring 9, and the valve flap 3 can be opened with the change of pressure so that the medium inside the valve body 1 can flow; the external thread 6 on the closing cover 5 cooperates with the internal thread 4 inside the valve body 1 so that the closing cover 5 is convenient to adjust its position inside the valve body 1. After the closing cover 5 adjusts its position, the valve flap 3 can be opened under different pressure differences through the spring 9 so as to adjust the opening pressure of the valve flap 3; the left valve stem 7, the right valve stem 8, and the spring 9 make the valve flap 3 firmly arranged.

[0016] The valve body 1 is provided with an inlet 10, an outlet 11, and a through port 12; a first thread 13 is arranged at the inlet 10; a second thread 14 is arranged at the outlet 11; the convex block 2 and the valve flap 3 are in a stepped shape; the valve flap 3 cooperates with the convex block 2; one side of the right valve stem 8 is fixedly connected to the closing cover 5.

[0017] By adopting the above technical solution: The medium enters from the inlet 10. Due to the pressure difference between the inlet 10 and the outlet 11, the valve flap 3 is opened, and then the medium passes through the through port 12 and is finally discharged from the outlet 11; The first thread 13 and the second thread 14 facilitate the connection of the check valve to the external pipeline; The valve flap 3 cooperates with the convex block 2 so that the valve flap 3 will not separate from the convex block 2 when the pressure difference is not reached.

[0018] A groove 15 is formed on the left valve stem 7; One end of the right valve stem 8 is located in the groove 15; A spring 9 is also arranged in the groove 15; One end of the spring 9 is fixedly connected to the left valve stem 7; The other end of the spring 9 is fixedly connected to the right valve stem 8; There is a rotating port 16 on the closing cover 5; An extending port 17 is formed on the valve body 1.

[0019] A support bar 18 is arranged on one side of the convex block 2; The support bars 18 are symmetrically arranged inside the valve body 1; The through port 12 is located on one side of the support bar 18.

[0020] By adopting the above technical solution: The groove 15 facilitates the arrangement of one side of the right valve stem 8 inside the left valve stem 7. The left valve stem 7, the right valve stem 8, the groove 15, the spring 9, and the closing cover 5 enable the valve flap 3 to open under different pressure differences, thus facilitating the adjustment of the opening pressure of the valve body 1; The extending port 17 is in an open state, and the extending port 17 facilitates inserting external tools into the valve body 1 to rotate the rotating port 16; The rotating port 16 facilitates rotating the closing cover 5 with tools and then adjusting the position of the closing cover 5 inside the valve body 1.

[0021] When the valve flap 3 separates from the convex block 2, the support bar 18 supports the valve flap 3 to prevent the valve flap 3 from moving up and down inside the valve body 1. The support bar 18 is strip-shaped, so that the medium can reach the through port 12 through both sides of the support bar 18 and then be discharged from the valve body 1 through the outlet 11.

[0022] In summary, the present utility model has the following beneficial effects: The valve flap 3 and the convex block 2 enable the medium to only enter from the inlet 10 and leave the valve body 1 through the through port 12 and the outlet 11. When it is necessary to adjust the opening pressure of the valve body 1, the closing cover 5 can be rotated to move the closing cover 5. After the closing cover 5 moves, the compression degree of the spring 9 is adjusted, so that the pressure for the valve flap 3 to move can be adjusted, and thus the opening pressure of the valve body 1 can be adjusted.

[0023] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A one-way valve, comprising a valve body (1), characterized in that: A bump (2) is provided inside the valve body (1); a valve flap (3) is provided between the bumps (2); an internal thread (4) is provided inside the valve body (1); a closing cover (5) is provided between the internal threads (4); an external thread (6) is provided on the closing cover (5); the closing cover (5) and the valve flap (3) are connected by a left valve rod (7) and a right valve rod (8); one side of the right valve rod (8) is located inside the left valve rod (7); a spring (9) is provided between the left valve rod (7) and the right valve rod (8).

2. The check valve according to claim 1, wherein: The valve body (1) is provided with an inlet (10), an outlet (11), and a through port (12); a first thread (13) is provided at the inlet (10); a second thread (14) is provided at the outlet (11); the bumps (2) and the valve flap (3) are in a stepped shape; the valve flap (3) cooperates with the bumps (2); one side of the right valve rod (8) is fixedly connected to the closing cover (5).

3. The one-way valve according to claim 2, characterized in that: A groove (15) is formed on the left valve rod (7); one end of the right valve rod (8) is located inside the groove (15); a spring (9) is further provided inside the groove (15); one end of the spring (9) is fixedly connected to the left valve rod (7); the other end of the spring (9) is fixedly connected to the right valve rod (8); a rotating port (16) is provided on the closing cover (5); an extending port (17) is formed on the valve body (1).

4. The one-way valve according to claim 3, characterized in that: A support bar (18) is provided on one side of the bump (2); the support bars (18) are symmetrically arranged inside the valve body (1); the through port (12) is located on one side of the support bar (18).

Images