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Ultrahigh-pressure plunger pump structure

A plunger pump, ultra-high pressure technology, applied in the direction of pump components, variable displacement pump components, components of pumping devices for elastic fluids, etc., can solve the problems of short structural life, metal fatigue, and stress of ultra-high pressure plunger pumps Concentration and other issues to achieve the effects of avoiding creep effects, prolonging service life, and strong compression resistance

Pending Publication Date: 2019-03-19
GUANGZHOU JUNENG BIOLOGY & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the cylinder liner of the high-pressure plunger pump needs to frequently bear the force of reciprocating stretching during the movement of the piston rod, in the current ultra-high pressure plunger pump, the cylinder liner is equipped with stepped holes, and the pressurized material is to be broken. The cells will cause greater pressure at the turning point of the step hole in the cylinder liner, which is easy to form stress concentration. The cylinder liner will creep under the pressure, and the cycle of high pressure and low pressure will easily cause metal fatigue and cracks, and the durability is relatively low. Poor, resulting in a short life of the ultra-high pressure plunger pump structure

Method used

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  • Ultrahigh-pressure plunger pump structure
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  • Ultrahigh-pressure plunger pump structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The specific embodiment of the present invention is as figure 1 As shown, an ultra-high pressure plunger pump structure includes a cylinder liner 12 and a piston rod 5. A through hole 18 is provided in the middle of the cylinder liner 12. One end of the piston rod 5 extends into the above-mentioned through hole 18, and the piston rod 5 passes through the sealing assembly. and the first sealing gland 1 that compresses the sealing assembly and the cylinder liner 12 form a sealed connection; the other end of the straight through hole 18 is provided with an inlet and outlet adapter 10, and the inlet and outlet pipe 8 of the inlet and outlet adapter 10 The second sealing gland 9 is fixed on the cylinder liner 12 , and the inner end of the inlet and outlet pipe 8 forms a contact seal with the end of the through hole 18 . Specifically, the piston rod 5 passes through the first sealing gland 1 , and the inlet and outlet pipe 8 passes through the second sealing gland 9 . Both t...

Embodiment 2

[0031] Such as figure 2 As shown, the difference from Embodiment 1 is that the cylinder liner 12 includes an inner cylinder liner 7 and an outer cylinder liner 6 nested in each other, a through hole 18 is provided in the middle of the inner cylinder liner 7, and the sealing assembly is embedded into the inner cylinder liner 7 inside. The inner cylinder liner 7 is a stainless steel structure, and the outer cylinder liner 6 is a high-strength structural sleeve; a third gland 11 is fixed between the second sealing gland 9 and the outer cylinder liner 6, and the third gland 11 and the sealing assembly connect the inner Cylinder liner 7 is clamped in the middle. Between the end of the inlet and outlet pipe 8 and the end edge of the inner cavity of the inner cylinder liner 7 is a tapered surface sealing structure 17. Specifically, the end of the inlet and outlet material pipe 8 is provided with an outer conical surface, and the inner cavity of the inner cylinder sleeve 7 The end ...

Embodiment 3

[0034] Such as image 3 As shown, the difference from Embodiment 2 is that the top of the inlet and outlet pipe 8 is provided with an extension 81 extending into the inner cavity of the inner cylinder liner 7, and there is a slight gap between the extension 81 and the inner cavity side wall of the inner cylinder liner 7. The gap is decompressed and sealed, and the gap between the two is 0.008-0.012mm. An annular groove is provided on the outer wall of the extension part 81 , and the second sealing ring 15 is sleeved in the annular groove and is in contact with the extension part 81 and the side wall of the inner cavity of the inner cylinder liner 7 .

[0035] The top of the extension 81 includes a baffle 14, the baffle 14 is detachably mounted on the top of the extension 81 by screws, and the side of the annular groove away from the baffle 14 is provided with a raised annular step, the baffle 14 and the ring The steps form an annular groove. This structure facilitates the se...

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PUM

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Abstract

The invention discloses an ultrahigh-pressure plunger pump structure. The ultrahigh-pressure plunger pump structure comprises a cylinder sleeve and a piston rod. The middle portion of the cylinder sleeve is provided with a straight through hole. One end of the piston rod extends into the straight through hole. The piston rod is in sealed connection with the cylinder sleeve through a sealing assembly and a first sealing gland pressing the sealing assembly. A material inlet and outlet adaptor is arranged on the outer side of the other end of the straight through hole. A material inlet and outletpipe of the material inlet and outlet adaptor is fixed to the cylinder sleeve through a second sealing gland. The inner end of the material inlet and outlet pipe and the end of the straight through hole are in contact sealing. According to the ultrahigh-pressure plunger pump structure provided by the invention, the stress concentrated part of the structure is omitted, and the service life of equipment is prolonged.

Description

technical field [0001] The invention relates to cell crushing equipment, in particular to an ultra-high pressure plunger pump structure. Background technique [0002] The cell crusher can crush the cell material entering it through the crusher. The cell crusher includes a high-pressure plunger pump. The high-pressure plunger pump is provided with a cylinder sleeve, a piston rod, and an inlet and outlet conversion joint. The inlet and outlet conversion joint communicates with the cylinder sleeve through an inlet and outlet pipe. When working, the piston rod in the high-pressure plunger pump moves back and forth to suck the cells to be crushed from the feed port of the feed-in and feed-out conversion joint, and then press them into the crusher from the discharge port. However, because the cylinder liner of the high-pressure plunger pump needs to frequently bear the force of reciprocating stretching during the movement of the piston rod, in the current ultra-high pressure plun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/16F04B53/00
CPCF04B53/00F04B53/16F04B53/164F04B53/166
Inventor 余行文
Owner GUANGZHOU JUNENG BIOLOGY & TECH