Self-return plunger and plunger pump with same

A plunger pump and plunger technology, applied in the field of self-returning plunger and its plunger pump, can solve the problems of short service life, damage to plunger and return disc, etc., and achieve the effect of easy maintenance and avoidance of easy damage

Pending Publication Date: 2020-08-14
ZHEJIANG SAIKESI HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This invention uses the return disc to apply a pulling force to the plunger to realize the return of the plunger, so there are the above-mentioned problems that the plunger and the return disc are easily damaged and the service life is short

Method used

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  • Self-return plunger and plunger pump with same
  • Self-return plunger and plunger pump with same
  • Self-return plunger and plunger pump with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a self-returning plunger, such as figure 1 As shown, the plunger body 1 is included, and the plunger body 1 is also connected with a guide rod 2 that can move synchronously with the plunger body 1. There is a gap 3 between the guide rod 2 and the plunger body 1. There is a gap 3 to facilitate the snap-in isolation structure between the plunger body 1 and the guide rod 2, so as to ensure that when inserted into the plunger pump cylinder 4, the plunger body 1 and the guide rod 2 are respectively located in two mutually isolated chambers, Thereby, the driving of the guide rod 2 is realized.

[0026] In the present invention, when in use, the hydraulic force acts on the push guide rod 2 to push the plunger body 1 back, so that there is no need to set a return plate.

[0027] Preferably, the axis line of the guide rod 2 and the axis line of the plunger body 1 are parallel to each other, and the guide rod 2 is fixedly connected or integrally formed w...

Embodiment 2

[0029] This embodiment provides a plunger pump, which adopts the self-returning plunger described in Embodiment 1, combined with Figure 1-4 As shown, it includes a plunger pump cylinder 4 with a plunger hole 6 inside and a distribution plate 5. The distribution plate 5 has a hydraulic medium flow hole 7 passing through the flow plate 5. The plunger hole 6 and the hydraulic medium flow hole 7 The plunger holes 6 are provided with several, and the plunger body 1 is slidably connected in the plunger holes 6 one by one, and the plunger pump cylinder 4 is also provided with Isolated reset hydraulic hole 8, when the plunger body 1 is inserted into the plunger pump cylinder 4, the isolation structure for isolating the plunger hole 6 and the reset hydraulic hole 8 is located in the gap 3, and the guide rod 2 is slidably connected to the Inside the reset hydraulic hole 8 , the guide rod 2 is set in one-to-one correspondence with the reset hydraulic hole 8 , and also includes a communi...

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PUM

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Abstract

The invention belongs to the technical field of plunger pumps, and particularly relates to a self-return plunger and a plunger pump with the same. Aiming at the problems that in the prior art, a return disc is utilized to realize plunger return, and thus damage to a plunger is prone to be caused, and the return disc itself has large wear, the invention provides the self-return plunger and the plunger pump with the same. The self-return plunger comprises a plunger body, wherein the plunger body is also connected with a guide rod capable of synchronously moving with the plunger body, and a gap is formed between the guide rod and the plunger body. According to the self-return plunger, the guide rod is connected on the plunger body, and return of the plunger body is realized by pushing the guide rod, so that a return disc does not need to be arranged.

Description

technical field [0001] The invention belongs to the technical field of plunger pumps, in particular to a self-returning plunger and the plunger pump thereof. Background technique [0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber to realize oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. In the prior art, the return stroke of the plunger of the plunger pump mainly relies on applying a pulling force to the sliding shoe during the rotation of the return disk, so as to realize the return stroke of the plunger. However, during use, the return plate often has a relatively fast speed, which will cause the slipper to be easily pulled off from the plunger, resulting in damage to the plunger. At the same time, the return plate it...

Claims

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Application Information

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IPC IPC(8): F04B1/22F04B1/2014F04B1/124F04B1/2042F04B1/2078
CPCF04B1/124F04B1/2014F04B1/2042F04B1/2078F04B1/22
Inventor 史淼奇高魏磊
Owner ZHEJIANG SAIKESI HYDRAULIC
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