One-way valve with high sealing performance

Abstract

The utility model discloses a one-way valve with high sealing performance. The one-way valve comprises a valve body, a valve seat, a spring, a valve core and a spring seat, a hollow cavity is formed in the valve body, an inlet and an outlet are formed in the two ends of the cavity respectively, a spring seat is arranged at the outlet, a groove is formed in the bottom face, close to one side of the inlet, of the spring seat, a through hole used for oil passing is formed in the bottom face of the groove, and a plurality of oil discharging holes are evenly formed in the spring seat in the circumferential direction. The spring is installed in a groove formed in the spring seat and used for resetting the valve element. The valve element is of a sphere structure, one side of the valve element is connected with the spring, and the other side of the valve element is tangent to the conical chamfer structure of the valve seat to form a sealing face. The valve seat is embedded in the position, close to the inlet, of the cavity and is of a hollow structure, and a conical surface chamfer structure is arranged on the inner edge of the side, making contact with the valve element, of the valve seat.

Description

Technical Field

[0001] The utility model relates to a one-way valve with high sealing performance. Background Art

[0002] A one-way valve is a valve that allows fluid to flow only along the inlet, but the medium at the outlet cannot flow back. It is commonly known as a one-way valve. A one-way valve is also called a check valve or a non-return valve. It is used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction. There are two types of one-way valves: straight-through and right-angle. Straight-through one-way valves are installed on the pipeline with threaded connections. Right-angle one-way valves are available in three types: threaded connection, plate connection, and flange connection. The existing one-way valves have a single flow path and poor flowability; the seal is prone to failure, and vibration and noise are easily generated during operation. Utility Model Content

[0003] The purpose of the utility model is to solve the above deficiencies in the prior art and provide a one-way valve with high sealing performance.

[0004] A one-way valve with high sealing performance comprises a valve body, a valve seat, a spring, a valve core and a spring seat; the interior of the valve body is a hollow cavity, an inlet and an outlet are respectively arranged at two ends of the cavity, a spring seat is arranged at the outlet, a groove is arranged on the bottom surface of the spring seat close to the inlet side, a through hole for passing oil is arranged on the bottom surface of the groove, and a plurality of oil drain holes are evenly arranged on the spring seat along the circumference; the spring is installed in the groove provided in the spring seat, and is used for resetting the valve core; the valve core is a spherical structure, one side of which is connected to the spring, and the other side of which is tangent to the conical chamfered structure of the valve seat to form a sealing surface; the valve seat is embedded in the cavity close to the inlet, the valve seat is a hollow structure, and a conical chamfered structure is arranged on the inner edge of the side in contact with the valve core.

[0005] Preferably, a valve cover is provided at the inlet of the valve body, a through hole is provided at the center of the surface of the valve cover, and the opening edge of the through hole is a conical structure.

[0006] Preferably, the valve seat and the valve body are interference fit, the outer wall of the valve seat is provided with an annular groove, a sealing ring is provided in the annular groove, and the sealing ring is located between the outer wall of the valve seat and the inner side of the valve body.

[0007] Preferably, the total cross-sectional area of ​​the plurality of oil drain holes is not less than the cross-sectional area of ​​the valve body cavity at the inlet.

[0008] Preferably, an outer side wall of the valve body is provided with a mounting groove, and a sealing ring is provided in the mounting groove for achieving sealing between the one-way valve and its connecting structure.

[0009] Beneficial effects: Compared with the prior art, the utility model adopts a porous spring seat to improve the fluidity of the oil; the edge of the hole at the contact end of the valve seat and the steel ball is designed with a conical chamfer structure, which makes the valve core more stable when the oil impacts in the reverse direction, has better sealing performance, and is not easy to generate vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a one-way valve with high sealing performance;

[0011] In the figure, 1, valve body, 2, valve cover, 3, valve seat, 4, spring, 5, spring seat, 6, valve core. DETAILED DESCRIPTION

[0012] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0013] like Figure 1 As shown, valve body 1, valve cover 2, valve seat 3, spring 4, spring seat 5, valve core 6;

[0014] A one-way valve with high sealing performance comprises a valve body 1, a valve seat 3, a spring 4, a valve core 6 and a spring seat 5; the interior of the valve body 1 is a hollow cavity, and an inlet (port A) and an outlet (port B) are respectively provided at both ends of the cavity, and a spring seat 5 is provided at the outlet, and a groove is provided on the bottom surface of the spring seat 5 close to the inlet, and a through hole for passing oil is provided on the bottom surface of the groove, and a plurality of oil drain holes are also uniformly provided along the circumferential direction of the spring seat 5; the spring 4 is installed in the groove provided in the spring seat 5, and is used to reset the valve core 6; the valve core 6 is a spherical structure, one side of which is connected to the spring 4, and the other side of which is tangent to the conical chamfered structure of the valve seat 3 to form a sealing surface; the valve seat 3 is embedded in a position of the cavity close to the inlet, and the valve seat 3 is a hollow structure, and a conical chamfered structure is provided on the inner edge of the side in contact with the valve core 6.

[0015] In this embodiment, a valve cover 2 is provided at the inlet of the valve body 1 , a through hole is provided at the center of the surface of the valve cover 2 , and the opening edge of the through hole is a conical structure.

[0016] In this embodiment, the valve seat 3 and the valve body 1 are interference fit, the outer wall of the valve seat 3 is provided with an annular groove, a sealing ring is provided in the annular groove, and the sealing ring is located between the outer wall of the valve seat 3 and the inner side of the valve body 1.

[0017] In this embodiment, the total cross-sectional area of ​​the plurality of oil drain holes is not less than the cross-sectional area of ​​the cavity of the valve body 1 at the inlet.

[0018] In this embodiment, an installation groove is provided on the outer side wall of the valve body 1, and a sealing ring is provided in the installation groove to achieve sealing between the one-way valve and the connection structure thereof.

[0019] Instructions for use: When the oil flows from port A to port B, the steel ball is pushed open by the force of the spring 4 and flows to port B. When the oil flows from port B to port A, the steel ball closes the valve port under the action of the hydraulic pressure and the force of the spring 4, so that the oil is cut off.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-way valve with high sealing performance, characterized in that: It includes a valve body, a valve seat, a spring, a valve core and a spring seat; the interior of the valve body is a hollow cavity, with an inlet and an outlet respectively provided at both ends of the cavity, a spring seat is provided at the outlet, a groove is provided on the bottom surface of the spring seat close to the inlet side, a through hole for oil passage is provided on the bottom surface of the groove, and a plurality of oil drain holes are evenly arranged on the spring seat along the circumference; the spring is installed in the groove provided in the spring seat, and is used to reset the valve core; the valve core is a spherical structure, one side of which is connected to the spring, and the other side of which is tangent to the conical chamfered structure of the valve seat to form a sealing surface; the valve seat is embedded in the cavity close to the inlet, the valve seat is a hollow structure, and a conical chamfered structure is provided on the inner edge of the side in contact with the valve core.

2. A one-way valve with high sealing performance according to claim 1, characterized in that: A valve cover is arranged at the inlet of the valve body, a through hole is arranged at the center of the surface of the valve cover, and the opening edge of the through hole is a conical surface structure.

3. A one-way valve with high sealing performance according to claim 1, characterized in that: The valve seat and the valve body are in interference fit. The outer wall of the valve seat is provided with an annular groove, and a sealing ring is provided in the annular groove. The sealing ring is located between the outer wall of the valve seat and the inner side of the valve body.

4. A one-way valve with high sealing performance according to claim 1, characterized in that: The total cross-sectional area of ​​the plurality of oil drain holes is not less than the cross-sectional area of ​​the valve body cavity at the inlet.

5. A one-way valve with high sealing performance according to claim 1, characterized in that: The outer side wall of the valve body is provided with a mounting groove, and a sealing ring is provided in the mounting groove to achieve sealing between the one-way valve and its connecting structure.

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