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Internal loop piston pump

A technology of piston pump and internal circulation, applied in the direction of rotary piston pumps, rotary piston machines, pumps, etc., can solve the problems of easy generation of dead volume, inconvenient processing of tooth profile lines, etc., to ensure processing accuracy and smoothness , improve the processing accuracy and smoothness, and prevent the effect of dead volume

Inactive Publication Date: 2010-05-19
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of inconvenient processing of the tooth-shaped line of the inner rotor of the existing internal circulation piston pump and easy generation of dead volume, and provides an internal circulation piston pump that prevents the generation of dead volume

Method used

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Examples

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Embodiment Construction

[0016] refer to Figure 1-4 , an inner circulation piston pump, including a pump cover 1, a pump body 2, an outer rotor 3, a bracket 4, a pump shaft 5, an inner rotor 6, and a crescent-shaped partition 7, and the body of the inner rotor 6 is connected with several Uniformly distributed rotor body 61, the outer rotor 3 meshes with the inner rotor 6, the crescent-shaped partition 7 separates the liquid suction area and the liquid discharge area, and the rotor body 61 is provided with a rotor tooth 62, the rotor tooth The tooth profile of 62 is larger than that of the rotor body 61 , and the inner rotor 6 contacts and meshes with the outer rotor 3 through the rotor teeth 62 .

[0017] The rotor teeth 62 are fixed on the rotor body 61 through connecting posts 63 .

[0018] Driven by the motor, the pump shaft 5 drives the outer rotor 3 to rotate, and at the same time, the outer rotor 3 and the inner rotor 6 perform internal meshing movement to work. The crescent-shaped partition ...

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Abstract

The invention discloses an internal loop piston pump, which comprise a pumper cover, a pump body, an external rotor, a bracket, a pump shaft, an inner rotor and a crescent-shaped clapboard; the body of the inner rotor is connected with a plurality of rotor bodies which are uniformly distributed along a circumference; the external rotor and the inner rotor are internally geared; the crescent-shaped clapboard separates an liquid imbibition zone from an liquid drainage zone; the rotor bodies are provided with rotor gears; gear shape molded lines of the rotor gears are larger than that of the rotor bodies; and the inner rotor is in a contact engage with the external rotor through the rotor gear. The invention has the advantages of being convenient for the machining of the gear molded line of the inner rotor, ensuing the processing precision and the polishing degree of the gear shape molded line of the inner rotor, saving the machining time, simplifying the processing technology, and effectively preventing dead volume generation.

Description

technical field [0001] The invention relates to an inner circulation piston pump. Background technique [0002] The internal circulation piston pump is a double-rotor pump with excellent performance. The inner rotor of the pump adopts a three-lobe structure, and the outer rotor has a five-tooth structure. During the meshing process of the inner and outer rotors, no torque is transmitted, so the contact stress on the contact surface is extremely small , basically no wear. The pump has excellent characteristics in conveying viscous and non-lubricating media. It is widely used in the deep processing of agricultural products such as jam, milk and mashed potatoes, as well as in daily chemical, light industry, chemical and other industries. The rotor is a very important hydraulic conveying element of the pump. The quality of the rotor design will directly affect whether the rotors will bite each other, form a dead volume, cause cavitation, and generate vibration and noise. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/10
Inventor 张生昌张华军邓鸿英周佳张金海王宗槐
Owner ZHEJIANG UNIV OF TECH
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