Water pump seal part assembly

Abstract

The invention provides a water pump sealing piece assembly with small volume, fine sealing effect and strong commonality, which comprises a moving ring body, a fixed ring body, a moving ring shaft housing seat, a fixed ring shaft housing seat, a moving ring sealing ring, a spring, a spring retainer and a rubber sealing sleeve, the upper portion of the rubber sealing sleeve is embedded in a groove of the fixed ring body, the lower portion is sleeved in the fixed ring shaft housing seat, the lower surface of the moving ring body is engaged with the upper surface of the fixed ring body, and engaging surfaces of the moving ring body and the fixed ring body are in conical surface engagement. The water pump sealing piece assembly can be designed as: the outer ring of the moving ring shaft housing seat extends downwards to the outer ring of the fixed ring shaft sleeve seat and has a rotating clearance with the fixed ring shaft housing seat, or the outer ring of the fixed ring shaft housing seat extends upwards to the outer ring of the moving ring shaft housing seat and has a rotating clearance with the moving ring shaft housing seat. The two structures design the sealing piece to a semi-sealing structure, thereby reducing the pressure of working medium to a sealing working surface.

Description

technical field [0001] The invention relates to a seal structure of an automobile water pump, mainly a semi-closed structure seal assembly, which can be widely used in seal devices of various chemical pumps, submersible pumps, sewage pumps and other mechanical pumps. Background technique [0002] The main sealing technology used in the existing pump seal structure is that one dynamic end face is in contact with another static end face. The working principle of this structure is that in the sealing medium, two dynamic and static end faces form a plane contact to complete the sealing effect. . Since in practical applications, the main working parts are all exposed to the working medium, it can be seen that the existing seal design is usually a non-closed structure. These structures are used in the field of automotive water pumps and are affected by the engine speed. It directly leads to the curve change of the movement cut-off pressure difference, and also directly leads to t...

AI Technical Summary

Problems solved by technology

Since in practical applications, the main working parts are all exposed to the working medium, it can be seen that the existing seal design is usually a non-closed structure. These structures are used in the field of automotive water pumps and are affected by the engine speed. It directly leads to the curve change of the movement cut-off pressure difference, and also directly leads to the unenclosed structural seal, which must withstand the influence of the sealing environment and conditions, and cannot change these fluctuation factors, which will bring unfavorable factors to the sealing performance. This type of unenclosed plane The contact seal structure mainly extends two structures, one is a single-stage track seal, and the other is a multi-stage track seal

The former is the application of traditional sealing technology. Affected by the working conditions of automobile engines, there are generally fluctuations in sealing performance, and the consistency of sealing effect is uncertain. Although the latter solves the consistency of sealing performance and highlights the stability of sealing effect, but Determined by the design conditions, the volume of the joint between the dynamic seal ring and the static seal ring is relatively large. For some automotive water pump structures, the installation position of the seal in the pump has a certain volume requirement, so the latter is inconsistent with the applicability of the pump body, resulting in poor versatility

Therefore, it is impossible to meet the requirements of various types of pump bodies for the volume conditions of the seals. Therefore, in view of the limitations of the existing pumps on the construction conditions of the seals, it is required to ensure the sealing effect and ensure that the seals have strong versatility with various pump body structures. Features, a new sealing structure of the present invention can effectively solve the above problems

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