Embedded one-way valve

Abstract

The utility model relates to the technical field of one-way valves, in particular to an embedded one-way valve, which is characterized in that when the embedded one-way valve is used, after a valve terminal is mounted, when a medium passes and the pressure of the medium is generated, the valve assembly relieves the sealing of a valve seat assembly, so that after the medium passes and flows, a valve needle assembly enables the valve assembly to seal the valve seat assembly again; the operation is simple and convenient; comprising a valve needle assembly, a valve seat assembly, a valve assembly and a valve terminal, the valve seat assembly is arranged in the valve terminal, and the valve needle assembly penetrates through the interior of the valve seat assembly and is connected with the valve assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of check valve, in particular to a kind of embedded check valve. BACKGROUND

[0002] Check valve is used for controlling the one-way flow of medium such as refrigerant in thermal management system, allowing medium to pass when flowing forward, and preventing medium from flowing when reversing. The existing check valve structure is complex, inconvenient to assemble, and prone to seal performance degradation due to material fatigue after long-term use. Therefore, there is an urgent need for a check valve with simplified structure, easy to disassemble and long service life. SUMMARY

[0003] To solve the above technical problems, the utility model provides a kind of embedded check valve.

[0004] The utility model discloses a kind of embedded check valve, including valve needle assembly, valve seat assembly, valve door assembly and valve island, the valve seat assembly is provided inside the valve island, valve needle assembly passes through the inside of valve seat assembly and is connected with valve door assembly;When using, after installing valve island, when medium passes, the pressure of medium is valve door assembly unseals valve seat assembly, so that medium passes, flows after completion, valve needle assembly makes valve door assembly reseals valve seat assembly, it is simple and convenient to operate.

[0005] Preferably, the valve seat assembly includes a housing, a support column, and a hollow cylinder. The inside of the housing is provided with a hollow cylinder, and a plurality of support columns are arranged between the housing and the hollow cylinder in a circumferential array. When using, the valve needle assembly passes through the valve seat assembly above the valve seat assembly and is connected with the bottom end of the valve door assembly. The valve door assembly seals the bottom end of the housing. When the medium passes, the pressure of the medium causes the valve door assembly to move away from the bottom end of the housing, so that the medium passes between the plurality of support columns. After the medium is delivered, the valve needle assembly raises the valve door assembly under the guidance of the hollow cylinder, and the valve door assembly reseals the bottom end of the housing.

[0006] Preferably, the valve needle assembly includes a valve needle body and an end cap. The top end of the valve needle body is provided with a slot, the outer side wall of the valve needle body is provided with a strip-shaped opening and a T-shaped port, the T-shaped port is communicated with the strip-shaped opening, the outer side wall of the end cap is provided with a clamping block, and the end cap is sleeved with a spring outside. When using, the spring is sleeved outside the end cap, the bottom end of the end cap and the clamping block are inserted into the inside of the hollow cylinder from above the valve seat assembly, the top end of the valve needle body is inserted into the inside of the hollow cylinder from below the valve seat assembly, the clamping block is rotated after sliding into the strip-shaped opening, so that the clamping block enters the T-shaped port, and then the end cap is released. Under the action of the spring force, the clamping block is connected with the T-shaped port, and the installation is completed.

[0007] Preferably, the valve assembly includes a connecting gasket and a main sealing gasket. The main sealing gasket is wrapped around the outside of the connecting gasket, and the top of the connecting gasket is press-welded to the bottom of the valve needle body. The main sealing gasket is wrapped around the outside of the connecting gasket, and the top of the connecting gasket is press-welded to the bottom of the valve needle body. A spring drives the end cap to rise, thereby causing the valve needle body to drive the main sealing gasket to rise, thereby sealing the bottom of the valve seat assembly with the main sealing gasket.

[0008] Preferably, the end cap is made of rubber.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, after the valve island is installed, when the medium passes through, the pressure of the medium causes the valve assembly to release the seal on the valve seat assembly, thereby allowing the medium to pass through. After the flow is completed, the valve needle assembly causes the valve assembly to reseal the valve seat assembly, making the operation simple and convenient. Attached Figure Description

[0010] Fig. 1 This is a cross-sectional structural schematic diagram of the present invention;

[0011] Fig. 2 This is an exploded structural diagram of the present invention;

[0012] Fig. 3 This is an enlarged structural diagram of the main body of the spring and valve needle.

[0013] The following are labeled in the attached diagram: 1. Valve needle assembly; 2. Valve seat assembly; 3. Valve assembly; 4. Valve island; 5. Housing; 6. Support column; 7. Hollow cylinder; 8. Valve needle body; 9. End cap; 10. Spring; 12. Locking block; 13. Connecting gasket; 14. Main sealing gasket. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0015] Example

[0016] like Figs. 1 to 3 As shown, an embedded one-way valve of this utility model includes a valve needle assembly 1, a valve seat assembly 2, a valve assembly 3, and a valve island 4. The valve seat assembly 2 is disposed inside the valve island 4, and the valve needle assembly 1 passes through the inside of the valve seat assembly 2 and is connected to the valve assembly 3.

[0017] The valve seat assembly includes a housing 5, a support column 6 and a hollow cylinder 7. The hollow cylinder 7 is provided inside the housing 5, and multiple sets of support columns 6 are provided between the housing 5 and the hollow cylinder 7. The multiple sets of support columns 6 are distributed in a circumferential array.

[0018] The valve needle assembly includes a valve needle body 8 and an end cap 9. The valve needle body 8 has a slot at its top end, and the outer wall of the valve needle body 8 has a strip opening and a T-shaped opening. The T-shaped opening communicates with the strip opening. The outer wall of the end cap 9 has a locking block 12, and a spring 10 is fitted on the outer side of the end cap 9.

[0019] The valve assembly includes a connecting gasket 13 and a main sealing gasket 14. The main sealing gasket 14 is wrapped around the outside of the connecting gasket 13, and the top of the connecting gasket 13 is press-welded to the bottom of the valve needle body 8.

[0020] In this embodiment, the main sealing gasket 14 is wrapped around the outside of the connecting gasket 13. The top of the connecting gasket 13 is press-welded to the bottom of the valve needle body 8. The spring 10 is fitted on the outside of the end cap 9. The bottom of the end cap 9 and the locking block 12 are inserted into the inner side of the hollow cylinder 7 from above the valve seat assembly 2. The top of the valve needle body 8 is inserted into the inner side of the hollow cylinder 7 from below the valve seat assembly 2. After the locking block 12 slides into the strip opening, it rotates, thereby allowing the locking block 12 to enter the T-shaped opening. Then it is released. Under the action of the spring 10, the end cap 9 drives the locking block 12 to engage with the T-shaped opening. At the same time, under the action of the spring 10, the end cap 9 seals the bottom of the outer shell 5 with the main sealing gasket 14 through the valve needle body 8. When the valve body is in the fully open state, the three support columns are locked and play a role in sealing the middle channel, reducing flow resistance. Rubber can also greatly improve service life. Compared with metal materials, it is less likely to cause irreversible damage and fatigue due to long-cycle movement.

[0021] The present invention relates to an embedded one-way valve, wherein the top end of the valve needle body 8 and the bottom end of the end cap 9 can also be connected by a pin. The spring 10 of the embedded one-way valve is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An in-line check valve comprising a valve needle assembly (1), a valve seat assembly (2), a valve gate assembly (3) and a valve island (4), the valve island (4) is provided with the valve seat assembly (2) inside, characterized in that, The valve needle assembly (1) penetrates inside the valve seat assembly (2) and is connected with the valve assembly (3).

2. An in-line check valve as defined in claim 1, wherein, The valve seat assembly comprises a shell (5), support columns (6) and a hollow cylinder (7), the hollow cylinder (7) is arranged inside the shell (5), a plurality of groups of support columns (6) are arranged between the shell (5) and the hollow cylinder (7), and the plurality of groups of support columns (6) are distributed in a circumferential array.

3. An in-line check valve as defined in claim 2 wherein, The valve needle assembly comprises a valve needle body (8) and an end cover (9), the valve needle body (8) is provided with a slot at the top end, a strip-shaped opening and a T-shaped port are arranged on the outer side wall of the valve needle body (8), the T-shaped port is communicated with the strip-shaped opening, the outer side wall of the end cover (9) is provided with a clamping block (12), and the end cover (9) is sleeved with a spring (10) on the outer side.

4. An in-line check valve as defined in claim 3 wherein, The valve assembly comprises a connecting gasket (13) and a main sealing gasket (14), the main sealing gasket (14) is wrapped outside the connecting gasket (13), and the top end of the connecting gasket (13) is press-fitted and welded with the bottom end of the valve needle body (8).

5. An in-line check valve as defined in claim 3 wherein, The end cover (9) is made of rubber material.

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