Simplified hydraulic reciprocating diaphragm pump

Abstract

The invention relates to a reciprocating pump and aims to provide a simplified hydraulic reciprocating diaphragm pump. The pump comprises a hydraulic end and a power end; the hydraulic end comprises a cylinder body connected with a pump head, a diaphragm is arranged between the pump head and the cylinder body; the power end comprises a plunger, the back end of the plunger is connected with a crank shaft; the plunger is movably arranged in the plunger sleeve and slides back and forth inside the plunger sleeve, a sealing part is arranged between the plunger and the plunger sleeve so as to realize sealing, the front end of the plunger sleeve is connected with the cylinder body through an oil pipe and is communicated to the hydraulic oil side of the diaphragm; and a depressurization exhaust valve bank and a oil filling valve bank are separately connected through pipelines to form an independent oil pool and are separately communicated to the hydraulic oil side of the diaphragm through channels arranged in the cylinder body. The structure and external shape of the reciprocating diaphragm pump are simpler, the production difficulty and cost are reduced, an enormous amount of labor cost is saved, the working intensities of installation, maintenance and repair can be reduced, the efficiency is greatly increased, the cost is reduced, and the configuration method is flexible.

Description

technical field [0001] The present invention relates to a reciprocating pump. More particularly, the present invention relates to a hydraulic diaphragm reciprocating pump with a simplified structure. Background technique [0002] In the current hydraulic diaphragm reciprocating pump (or reciprocating diaphragm pump), the static system located behind the diaphragm and providing deformation tension for the diaphragm is generally called the fluid end, including the cylinder block, hydraulic oil chamber, and hydraulic oil internal circulation. Pipeline or oil pool and other parts; the dynamic system that will provide hydraulic pressure for the fluid end is called the power end, including motors, cams, crankshafts, plungers or plunger packings and other parts. However, the layout of the hydraulic end and the power end of a common hydraulic diaphragm reciprocating pump is mixed. For example, in the Chinese invention patent "Inner circulation pressure balance ultra-high pressure h...

AI Technical Summary

Problems solved by technology

If the sealing of the plunger is to be maintained, the cylinder block still needs to be disassembled, so there are still problems of difficult maintenance and high cost

[0004] The plunger type high pressure reciprocating pump is a commonly used equipment when high pressure and large flow fluid needs to be provided, but it has the disadvantages of large leakage and easy wear of the plunger packing

When the fluid is mixed with granular solids, the failure rate is higher and cannot meet the needs of the process

Although the existing high-pressure diaphragm plunger reciprocating pump can meet the needs of transporting impurity-containing fluids, the structure of its hydraulic end is quite complex, usually including flushing oil pumps, propelling oil pumps, electromagnetic reversing valves, pressure detection, and PLC. And other electrical equipment, resulting in bulky machine, expensive, difficult to popularize

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