High and low pressure piston assembly for super-high pressure pump

Abstract

The invention discloses a high and low pressure piston assembly for a super-high pressure pump. The high and low pressure piston assembly for the super-high pressure pump comprises a piston subassembly and a high pressure side piston subassembly. The piston subassembly comprises a low pressure piston and a high pressure piston rod, the low pressure piston is fixedly connected with one end of the high pressure piston rod, an O-shaped ring is arranged on the outer side of the low pressure piston, and a concave ring table is arranged at the other end of the high pressure piston rod. The high pressure side piston subassembly penetrates through the high pressure piston rod and installed on the concave ring table, a lock nut is arranged on the outer side of the high pressure piston subassembly,a spring pin is arranged on the outer side of the lock nut, the high pressure piston subassembly comprises a high pressure piston core component and a high pressure piston cover component, and an adjusting shim is arranged between the high pressure piston core component and the high pressure piston cover component. The low pressure piston and a high pressure piston are connected into a whole through the high pressure piston rod, so that the concentricity and perpendicularity of the high pressure piston and the low pressure piston are guaranteed, and abrasion deformation of the high pressure piston in the repeated operating process is prevented. The adjusting shim is arranged between the high pressure piston and a high pressure piston cover, so that the gap between the high pressure pistonand the high pressure piston cover is reduced, and airtightness is improved.

Description

technical field [0001] The invention relates to the technical field of booster pumps, in particular to a high and low pressure piston assembly for an ultrahigh pressure pump. Background technique [0002] Pneumatic gas booster pumps are the widest range in the industry, combining simple operating principles and robust construction for the most demanding industrial applications. IHT's pneumatic gas booster pump is very suitable for increasing gas pressure, high-pressure gas delivery, cylinder inflation and scavenging, in the pneumatic gas booster pump, the piston is the moving part and one of the key parts. The high-pressure piston in the booster pump needs to reciprocate in the high-pressure cylinder, and the high-pressure cylinder and piston wear sharply. The high-pressure piston will weaken the sealing performance due to wear, resulting in a decrease in air pressure, which will easily cause the high-pressure piston to shift and dislocate. The concentricity of the high-pre...

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a high-low pressure piston assembly for an ultra-high pressure pump, which can effectively solve the problem of wear and deformation of the high-pressure piston in the background technology, insufficient concentricity and perpendicularity between the high-pressure piston and the low-pressure piston, and gaps between the high-pressure piston and the high-pressure piston cover. The problem of weakened airtightness

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