One-way valve

A one-way valve and valve core technology, which is applied to lift valves, valve details, control valves, etc., can solve the problems of easy wear of the sealing surface, the need to improve the oil inlet efficiency, and the small size of the one-way valve, so as to shorten the sealing time. , Increase the durability and improve the effect of the liquid inlet cross-sectional area

Pending Publication Date: 2021-06-29
玉环石达暖通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The sealing surface of the steel ball and the liquid inlet is easily worn and the durability is not high
[0006] 2. Due to the small size of the one-way valve used in hydraulic tools, the manufacturing cost of this structure is relatively high
[0007] 3. The fluid of this type of one-way valve is in the middle and out of the surroundings. When closing the valve, it can only rely on the reset force of the spring, which is prone to problems such as long closing time and poor sealing performance.
[0008] 4. Affected by its own volume and structure, the oil inlet efficiency needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 , 4 As shown, a one-way valve, specifically an oil-inlet one-way valve, is mainly used to be installed on the oil circuit of a hydraulic tool, and includes a valve main body 11 , a valve core 12 and a reset member 13 .

[0047] The valve main body 11 includes an oil inlet portion 114 with an oil inlet hole 111 and an oil outlet portion 115 with an oil outlet hole 113. A valve core installation cavity 112 is formed in the oil outlet portion 115, and the oil inlet portion 114 forms a There is a clamping convex ring 116, and the oil outlet part 115 is fixed on the clamping convex ring 116, and realizes sealing installation.

[0048] The valve core 12 is movably installed in the valve core installation cavity 112, the reset member 13 is installed between the valve core 12 and the valve main body 11, and the valve core 12 is sealed or connected to the oil inlet hole 111 through the reset member 13, Realize the function of one-way communication. The reset ...

Embodiment 2

[0061] Such as Figure 5-6 As shown, this embodiment specifically refers to an oil outlet check valve. The structure of this embodiment is basically the same as that of Embodiment 1, the difference is that: the sealing ring 14 is provided with an oil inlet portion 114, and the threaded portion 15 is formed In the oil outlet portion 115 , three driving holes for installing tools are opened on the outer end surface of the oil outlet portion 115 .

Embodiment 3

[0063] Such as Figure 7-8 As shown, this embodiment specifically refers to an oil inlet check valve. The structure of the embodiment is basically the same as that of Embodiment 1, the difference lies in the installation position of the sealing ring, specifically, the connection end of the valve body 11 is formed There is an inclined surface, and a sealing groove is provided on the inclined surface, and a sealing ring 14 is installed in the sealing groove. In order to prevent the sealing ring 14 from extrusion misalignment, such as Figure 8 As shown, the angle between the slope and the end surface of the valve body 11 is 120 degrees. This can effectively prevent the threaded portion 15 from loosening and ensure the reliability of the installation position. Meanwhile, the installation structure of the sealing ring is applicable to all the above-mentioned embodiments.

[0064] In addition, the above embodiments can also be applied to products such as pneumatic tools, engines...

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Abstract

The invention belongs to the technical field of fluid control, and particularly relates to a one-way valve. The one-way valve comprises a valve main body, a valve core and a resetting piece, wherein the valve main body is at least provided with an oil inlet hole, a valve core mounting cavity and an oil outlet hole which sequentially communicate with an oil way; the valve core is movably mounted in the valve core mounting cavity; the resetting piece is mounted between the valve core and the valve main body; and the valve core is further provided with a guide base part and a sealing part, the guide base part is installed on the inner wall of the valve core mounting cavity, a flow channel is formed in the guide base part, the sealing part is used for sealing the oil inlet hole, a flow passing gap is formed between the sealing part and the valve core mounting cavity, and a flow passing hole which communicates with the flow passing gap with the flow passing channel is formed in the side wall of the sealing part. According to the one-way calve, the guiding base part is used for guiding and positioning the valve core, the sealing part is used for sealing the oil inlet hole, meanwhile, internal conduction is achieved through the flow passing gap, the flow passing hole and the flow passing channel, the liquid inlet sectional area can be greatly increased, the oil inlet and outlet efficiency can be improved, and meanwhile, the structure has the advantages of being easy to manufacture, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field of fluid control, in particular to a one-way valve. Background technique [0002] Check valve, also known as check valve or check valve, is mainly used in hydraulic system to prevent reverse flow of oil flow. [0003] At present, the main structure of the check valve includes a valve body, a spring and a steel ball, and the spring abuts the steel ball against the liquid inlet of the valve body. In order to achieve liquid conduction, there is a gap between the steel ball and the inner cavity of the valve. Therefore, after the one-way valve is opened, the steel ball cannot be accurately positioned in the valve body, which makes it impossible for the steel ball to quickly seal the liquid inlet when the valve is closed. , affecting work efficiency. At the same time, this also causes the sealing surface of the steel ball and the liquid inlet to be easily worn, and the service life is not high. [0004] The Chi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/06F16K1/36F16K27/02F15B13/02
CPCF15B13/027F16K1/36F16K15/063F16K27/0209
Inventor 陈石岗
Owner 玉环石达暖通科技有限公司
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