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Double-cone sealing structure

A technology of sealing structure and sealing surface, which is applied in the field of hydraulic valve sealing, can solve the problems of high processing of large cone surface, leakage and pressure relief, low production efficiency, etc., and achieve the effect of reliable sealing performance

Pending Publication Date: 2021-12-31
常州市兴维邦精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] like Figure 7 and Figure 8 As shown, the hydraulic valve seal is a kind of cone seal structure. The existing cone seal is sealed by contacting a large cone surface of the valve sleeve 1 with the rounded arc surface of the valve core 2 to form a circle of line contact, which will The processing of the large cone surface needs to be high, and the production efficiency is low, and because only one sealing part fails, it will cause leakage and pressure relief, so it is particularly important to design a double-cone sealing structure in order to solve the above problems

Method used

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Embodiment Construction

[0019] Such as figure 1 , figure 2 , image 3 , Figure 5 with Image 6 A double-cone sealing structure shown, the valve sleeve 1 and the valve core 2 are characterized in that: the valve sleeve 1 is composed of a sealing section 1-1, a transition section 1-2, a guiding section 1-3 and a discharge section 1-4 are connected as a whole from left to right. One end of the valve core extends into the sealing section and contacts the sealing surface 1-1-1 arranged on the inner wall of the sealing section. The sealing surface It is composed of two conical surfaces connected into one body. The end of the valve core in contact with the sealing surface is a rounded arc surface 2-1, and the rounded arc surface is in contact with the two conical surfaces of the sealing surface. .

[0020] Such as figure 1 with figure 2 There is a groove on the inner wall of the transition section shown, and there is a gap between the outer wall around the valve core and the groove.

[0021] Su...

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Abstract

The invention provides a double-cone sealing structure. The double-cone sealing structure comprises a valve sleeve and a valve element, and is characterized in that the valve sleeve is formed by sequentially connecting a sealing section, a transition section, a guide section and a drainage section into a whole from left to right, one end of the valve element stretches into the sealing section and makes contact with a sealing face arranged on the inner wall of the sealing section, the sealing face is formed by connecting two conical faces into a whole, the end, making contact with the sealing face, of the valve element is a rounded-corner arc face, and the rounded-corner arc face makes contact with the two conical faces of the sealing face. The two special conical faces at the large conical face of the valve sleeve and the rounded-corner arc face of the valve element are sealed, due to the fact that the contact range of the double conical faces does not need to cover the whole large conical face, the high-requirement machining part is changed from an original large conical face to two small conical faces, a finish machining area is reduced, and meanwhile, the number of tangent and linear contact places of two conical faces of two valve sleeves and the circular arc of the valve element is two, so that the sealing performance is more reliable.

Description

technical field [0001] The invention relates to the technical field of hydraulic valve sealing, in particular to a double-cone sealing structure. Background technique [0002] Such as Figure 7 with Figure 8 As shown, the hydraulic valve seal is a kind of cone seal structure. The existing cone seal is sealed by contacting a large cone surface of the valve sleeve 1 with the rounded arc surface of the valve core 2 to form a circle of line contact, which will The processing of the large cone surface needs to be high, and the production efficiency is low, and since only one sealing point fails, it will cause leakage and pressure relief, so it is particularly important to design a double-cone sealing structure to solve the above problems. Contents of the invention [0003] The invention provides a double-cone sealing structure, which seals with the rounded arc surface of the valve core through two special cone surfaces at the large cone surface of the valve sleeve, because th...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/36F16K1/42F16K27/02F15B13/02
CPCF16K1/00F16K1/36F16K1/42F16K27/02F15B13/02
Inventor 张志强谷柏林
Owner 常州市兴维邦精密科技有限公司
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