A semi-ring seal structure for sealing shaft parts
A sealing structure and shaft sealing technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of unable to form a seal, unreliable sealing, unable to apply stepped shaft seal, etc., to achieve continuous uniform sealing, smooth and reliable sealing effect
Active Publication Date: 2018-04-13
XIAN SPACE ENGINE CO LTD
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Problems solved by technology
[0002] The round-hole sealing structure is widely used in the mechanical seal of round-hole shells and shaft parts, but due to its structural limitations, it cannot be applied to upper and lower shells cut along the axis and steps with complex and changeable structures. shaft seal
The existing semi-circular sealing structure has sudden changes in sealing compression at the joint points of the upper shell, the lower shell, and the stepped shaft, which cannot form a reliable seal and is prone to problems such as leakage and leakage
In engineering design, due to the problem of unreliable sealing of the upper and lower shells and stepped shaft parts cut along the axis, designers usually avoid the semi-circular sealing structure cut along the axis, which increases the difficulty of engineering design
Method used
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.
[0025] Such as figure 1 As shown, it is the semi-circular sealing structure for sealing shaft parts of the present invention, which is the basic form of the present invention. Composed of sealing ring 5, stepped shaft 6, hexagonal head bolt 7 and hexagonal nut 8, the upper and lower casings 1 (2) are two upper and lower casings with round holes cut along the axis, the upper and lower casings 1 (2) The semi-circular surface and the cutting plane passing the axis will form a right-angled side, which will cause sudden changes in the compression of the seal and cause unreliable sealing. In this structure, the right-angled side is rounded; Topic 1 (2) A sealing groove is designed on the joint surface with other parts, which is used to place the heterosexual sealing ring 4, and ...
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The invention provides a half-ring sealing structure for sealing a shaft part. The half-ring sealing structure comprises an upper housing, a lower housing, a transition block, a special-shape sealing ring and an axial sealing ring, wherein the axial sealing ring enclasps a step shaft; the special-shape sealing ring is placed in a sealing groove of the upper housing or the lower housing; the transition block is arranged among the upper housing, the lower housing and the step shaft, and is used for smooth transition of a sealing structure part; and hexagonal bolts and hexagonal nuts compress the upper housing and the lower housing, and a sealing cavity is formed. With the adoption of the half-ring sealing structure, the sealing structure part can be formed on the step shaft, and the sealing is reliable. The half-ring sealing structure has the advantages of simple and novel structure, reliable sealing, high adaptability, and the like, can act as a special-shape step shaft to form the sealing cavity for conducting airtight detection, and can also be used for sealing of a rotating shaft in mechanical equipment, such as a gear box.
Description
technical field [0001] The invention relates to a sealing structure for sealing shaft parts, which can be used as a special-shaped stepped shaft to form a sealing cavity for airtight testing, and it is used for upper and lower housings and rotating shafts cut along the axis in mechanical equipment such as gear boxes. Shaft seal. Background technique [0002] The round-hole sealing structure is widely used in the mechanical seal of round-hole shells and shaft parts, but due to its structural limitations, it cannot be applied to upper and lower shells cut along the axis and steps with complex and changeable structures. on the shaft seal. The existing semi-circular sealing structure has sudden changes in sealing compression at the joint points of the upper shell, the lower shell and the stepped shaft, which cannot form a reliable seal and is prone to problems such as leakage and leakage. In engineering design, due to the problem of unreliable sealing of the upper and lower sh...
Claims
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IPC IPC(8): F16J15/32F16J15/28
CPCF16J15/28F16J15/32
Inventor 许静许桐晔赵飞杨富宁
Owner XIAN SPACE ENGINE CO LTD