Single plunger pump convenient to assemble and use

Abstract

The invention discloses a single plunger pump convenient to assemble and use. The single plunger pump comprises a pump body, a pump head and a pump cover; the pump head is arranged at one end of the pump head; the pump cover is arranged at the top end of the pump head; a motor is fixedly arranged in the pump body through a motor support; a pinion is in drive connection with an eccentric shaft through a bull gear; one end of the eccentric shaft is fixedly provided with a plunger; deep groove ball bearings are symmetrically arranged at one end of the bull gear and the two ends of the eccentric shaft; the exterior of an unloading valve core is provided with an unloading valve spring in a sleeved manner; one end of the pump head is provided with a water outlet pipe; one side of a water inlet connector and one side of the water outlet pipe are each provided with a set of O-shaped seal rings and water inlet / outlet bolts; a compression ring is arranged at the two sides of the exterior of theplunger, and is sealed by a water seal; one side of the top end of the pump cover is provided with a plug used for sealing by a plug bolt; and the outer side of each of one-way valves is provided witha one-way valve component. The single plunger pump disclosed by the invention is simple in structure, light in weight, higher in assembling ability and manufacturability and more economic and reliable, and can be widely used in occasions of hand guns, agricultural jet pumps and the like.

Description

technical field [0001] The invention relates to a pump, in particular to a single plunger pump which is easy to assemble and use. Background technique [0002] The cleaning machines currently on the market generally use a three-steel plunger pump driven by a swash plate, which is complex in structure and heavy in weight, and is not suitable for handheld products. Horizontal bar double-headed plunger pump products generally adopt planetary gear transmission or internal gear meshing transmission, etc. Although the center distance between the motor output shaft and the pump transmission shaft is small, the overall transmission efficiency is poor and the noise is relatively large. The horizontal bar hand-held pumps on the market are generally designed with the gear box and the lower bracket of the motor integrated. During the installation process, the gear box and the motor need to be assembled first, and then the transmission system and hydraulic system are installed on the bas...

AI Technical Summary

Problems solved by technology

[0002] At present, the cleaning machines on the market generally use the three-steel plunger pump driven by the swash plate, which has a complex structure and heavy weight, and is not suitable for handheld products.

Horizontal bar double-headed plunger pump products generally adopt planetary gear transmission or internal gear meshing transmission, etc. Although the center distance between the output shaft of the motor and the transmission shaft of the pump is small, the overall transmission efficiency is poor and the noise is large

The horizontal bar hand-held pumps on the market are generally designed with the gear box and the lower bracket of the motor integrated. During the installation process, the gear box and the motor need to be assembled first, and then the transmission system and hydraulic system are installed on the basis of the gear box. The disassembly and maintenance process In the process, it is also necessary to disassemble in reverse in strict accordance with the steps, resulting in that the pump and motor cannot be independent of each other, and the assembly and maintenance process is complicated

The water inlet and outlet design of the hand-held horizontal bar pump adopts different sizes and connection forms, which is complicated; or the water inlet and outlet are concentrated on one part, which has poor structural versatility and poor expandability of the pump.

The unloading form of the pump structure generally adopts the cone valve unloading structure, which has an independent valve body and sealing structure, has many parts, complex structure, and poor reliability.

And generally, an oil seal is arranged on the lower side of the pressure ring to seal the grease in the gearbox, and at the same time prevent a small amount of water leaking from the water seal from flowing into the gearbox. handheld products

In the gearboxes currently on the market, the motor positioning hole and the transmission shaft installation hole are generally designed in the opposite direction of the part, resulting in a large deviation in the center size of the two holes during the part manufacturing process, high noise and low efficiency.

Need to obtain reasonable parts precision, high production cost of parts, poor economy

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