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External circulation piston pump

A piston pump and external circulation technology, applied in the direction of rotary piston pumps, rotary piston machinery, pumps, etc., can solve the problems of performance degradation, affecting sealing effect, low discharge pressure, etc., to improve performance and efficiency, and avoid gaps Unevenness, the effect of narrowing the sealing gap

Inactive Publication Date: 2008-01-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the deflection of the driving shaft 5 and the driven shaft 6 is too large, it will not only increase the internal leakage of the pump chamber and reduce the performance, but also affect the sealing effect of the driving shaft 5, the driven shaft 6 and each seal, and even damage the seals; A rotor is not aligned with the pump body, resulting in partial friction, or even stuck, affecting the normal operation and reliability of the pump
It can be seen that the above-mentioned traditional cantilever structure has a great influence on the performance, reliability and life of the pump
In addition, since the pump body 2 and the box body 3 are not an integral part, there is an error in their center distance, coupled with the installation error, it is difficult to ensure the uniformity and size of the pump gap, resulting in more leakage in the pump and lower discharge pressure

Method used

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Referring to Fig. 2, a kind of external circulation piston pump, comprises motor, speed reducer, pump body assembly, and described pump body assembly comprises the front end cover 1, middle cover 15 that connects successively, traditional pump body and box body Body 16 and rear end cover 4 integrated into one body. The middle sleeve 15 here can play the role of supporting other components and sealing the working cavity and the oil cavity. The body 16 is provided with a drive shaft 5 and a driven shaft 6, the output shaft of the motor is connected with the input shaft of the reducer through a coupling, and the output shaft of the reducer is connected with the reducer through a coupling. The driving shaft 5 of the pump body assembly is connected;

[0017] The drive shaft 5 is supported by the first bearing 7 and the second bear...

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Abstract

The invention includes a motor, a retarder and a pump body assembly. The drive shaft in the pump body assembly is supported by first and second bearings. The driven shaft is supported by third and fourth bearings. A first rotor and a drive gear are disposed on the drive shaft. A second rotor and a driven gear are disposed on the driven shaft. The first rotor is located between the first and second bearings. The second rotor is located between the third and fourth bearings.

Description

(1) Technical field [0001] The invention relates to an outer circulation piston pump. (2) Background technology [0002] The traditional external circulation piston pump is shown in Figure 1. It is a general-purpose mechanical product that is widely used, and is mainly used to transport heavy oil medium. It mainly includes a motor, a reducer, and a pump body assembly. The pump body assembly includes a front cover 1, a pump body 2, a box body 3, and a rear end cover 4 connected in sequence. The pump body 2 and the box body 3 are equipped with There are driving shaft 5 and driven shaft 6, the output shaft of the motor is connected with the input shaft of the reducer through a coupling, and the output shaft of the reducer is connected with the driving shaft 5 of the pump body assembly through a coupling; the driving shaft 5 is connected by The first bearing 7 and the second bearing 8 support, the driven shaft 6 is supported by the third bearing 9 and the fourth bearing 10, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C7/00
Inventor 张生昌邵文娥牟介刚黄新华邓鸿英冯忠明郑水华张华军林界曹国纬
Owner ZHEJIANG UNIV OF TECH
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