A ceramic-cavity screw rubber rotor pump

The use of ceramic lining in spiral rubber rotor pumps solves the problems of pump cavity corrosion and thermal expansion, improves operating efficiency and media purity, reduces maintenance costs, and is suitable for conveying highly corrosive and highly abrasive media.

CN224532962UActive Publication Date: 2026-07-21KNIROVA (HANGZHOU) IND EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KNIROVA (HANGZHOU) IND EQUIP CO LTD
Filing Date
2025-09-25
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The pump chamber of existing spiral rubber rotor pumps is susceptible to corrosion and wear from the medium, and may experience thermal expansion and deformation in high-temperature environments, which increases the frequency of maintenance and parts replacement and equipment repair costs.

Method used

The inner lining is made of ceramic material instead of the traditional metal pump cavity wall. The inner lining fits tightly with the pump cavity wall, reducing friction, improving operating efficiency, preventing media contamination, and possessing excellent corrosion resistance, wear resistance, and high temperature resistance.

Benefits of technology

It reduces energy loss, protects the purity of the medium, reduces the frequency of maintenance and parts replacement, lowers equipment maintenance costs, and is suitable for conveying highly corrosive and highly abrasive media.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to rotor pump technical field, concretely is a kind of spiral rubber rotor pump of ceramic inner chamber, including pump body, the inside of pump body is provided with two groups of rotating shaft, one end of pump body is provided with pump cavity, the end of two groups of rotating shaft is inserted into pump cavity inside and respectively has the spiral rubber rotor of intermeshing, the both sides of pump body are provided with the suction inlet and discharge port being linked with pump cavity, the inner wall of pump cavity is provided with inner liner, and inner liner is ceramic material;The utility model can reduce the friction between spiral rubber rotor and pump cavity inner wall, to reduce energy loss, improve the operating efficiency of pump, will not make the inner wall of pump cavity to the medium being transported produce pollution, protect the purity of medium, and can make the rotor pump be applicable to the transportation of various high corrosiveness, high abrasion resistance medium, can prevent the performance decline, deformation etc. that possibly appear in pump cavity inside due to high temperature, to further can reduce maintenance and the frequency of replacement parts, reduce equipment maintenance cost.
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