Novel sealing cavity structure for paper pulp pump
By designing a novel sealing chamber structure for pulp pumps that allows for interchangeable sealing methods, the problems of high cost and inconvenient maintenance caused by different sealing types have been solved, achieving the effects of cost reduction and convenient maintenance.
CN223975298UActive Publication Date: 2026-03-06SHANGHAI KAIQUAN PUMP IND GROUP
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Patent Information
- Application Number
- CN202520850686.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Technical Problem
Existing pulp pumps require different pump covers due to different sealing types, resulting in high production costs, resource waste, and inconvenient maintenance.
Method used
A novel sealing cavity structure is designed to enable interchangeability of multiple sealing methods. Replaceable components, including single-end mechanical seals, double-end mechanical seals, or packing seals, are set within the space enclosed by the impeller, pump cover, and shaft. A special pump cover design and fastening method are adopted to achieve multi-purpose functionality.
Benefits of technology
Reduce production costs, simplify the disassembly and assembly process, improve work efficiency, ensure safe operation of the unit, and reduce resource waste.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a novel sealing cavity structure for a paper pulp pump, a sealing cavity body is composed of an impeller, a pump cover and a shaft, a replacement part is arranged in the sealing cavity, and the replacement part is one of a single-end-face mechanical seal, a double-end-face mechanical seal or a packing seal. The sealing cavity is generally designed according to packing sealing, single-end-face mechanical sealing and double-end-face mechanical sealing, interchange of multiple sealing modes can be achieved, the effect of multiple purposes is achieved, and the production cost is effectively reduced. The shaft sleeve is installed between the impeller hub and the shaft shoulder, after the impeller nut is screwed down when the pump is assembled, the impeller hub and the shaft shoulder jointly press the shaft sleeve, key connection is not needed, and therefore the shaft sleeve can be relatively thinned, the size of a sealing cavity is reduced, and cost is reduced. As key connection is not adopted, a key groove is not formed in the shaft, the strength of the shaft is ensured, and safe operation of a unit is ensured.
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