A power drive system of a high-pressure water jet pump

Abstract

The invention discloses a power drive system of a high pressure water jet pump. The power drive system of the high pressure water jet pump comprises a main motor, a driving gear, a driven gear, a transmission belt, a crankcase, a reduction box and a high pressure cylinder group, wherein a reduction machine is used for the transmission connection between the main motor and the crankcase; the high pressure cylinder group comprises multiple high pressure cylinder bodies; the high pressure cylinder bodies are fixed to the outer side of the crankcase in a locked mode; each high pressure cylinder body is internally provided with a piston rod, and a first end of each piston rod is located in the corresponding high pressure cylinder body and the end of a second end is fixedly connected with a corresponding connection rod piston; a water outlet cavity is formed between each high pressure cylinder body and the corresponding piston rod; the side wall of each high pressure cylinder body is provided with a water inlet channel allowing outer water to flow into the corresponding water outlet cavity and a water outlet channel communicated with the corresponding water outlet cavity; each high pressure cylinder body is internally provided with a seal gasket which opens or closes the water inlet channel following the motion of the corresponding piston rod; a ruby nozzle communicated with the corresponding water outlet channel is mounted outside the second end of each high pressure cylinder body. Compared with the prior art, the power drive system of the high pressure water jet pump has the advantages that the water discharge amount is large, the structure is simple, and the manufacturing and maintenance cost is low.

Description

technical field [0001] The invention relates to a driving system, in particular to a power driving system of a high-pressure water jet pump. Background technique [0002] The power drive system of the existing high-pressure water jet pump is mainly divided into two types. One is the direct drive of the motor. , this form is a mechanical direct drive; the other is a motor-driven oil pump, the oil pump passes through the hydraulic system, and the hydraulic oil pushes the cylinder piston of the cylinder to make a linear reciprocating motion, thereby pushing the water out. This form is a hydraulic plunger type direct drive. drive. [0003] The high-pressure water jet pump of the mechanical direct drive power drive system commonly used at home and abroad, such as figure 1 As shown, it includes parts such as main machine 10, crankcase 20, hydraulic tank 30, one-way valve group 40, four-way valve 50 and high-pressure pipeline 60, and has the advantages of simple structure and low...

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Problems solved by technology

[0003] The high-pressure water jet pump of the mechanical direct drive power drive system commonly used at home and abroad, such as figure 1 As shown, it includes parts such as main machine 10, crankcase 20, hydraulic tank 30, one-way valve group 40, four-way valve 50 and high-pressure pipeline 60, and has the advantages of simple structure and low manufacturing cost. However, this The piston rod 201 of the crankcase 20 of the power drive system directly extends into the hydraulic tank 30, and the hydraulic tank 30 and the crankcase 20 share the same casing, so that when the piston rod 201 is pushed, the external low-pressure water will flow continuously. Into the hydraulic tank 30, it affects the thrust of the piston rod 201, so that the water pressure of the piston rod 201 pushed out of the hydraulic tank 30 is low, so that the water output of the jet pump is small, which can only be kept at 3.0L / min However, the water output of the existing jet pump needs to reach about 4.3 L / min, then, in order to improve the water output of the mechanical high-pressure water jet pump, the rotating speed of the shaft 202 of the crankcase 20 can only be increased to about 700r / min, and The diameter of the piston rod 202 of the crankcase 20 is only about 8mm, so there will be a transmission mode in which the high-speed crankshaft drives the small-diameter piston rod to move, and this transmission mode will easily cause the problem of rapid damage to the sealing parts in the hydraulic tank 30

[0004] The high-pressure water jet pumps of the hydraulic plunger type direct drive drive system currently on the market, such as figure 2 As shown, it consists of main motor 100, oil pump 200, hydraulic system 300, cooling system 400, high-pressure cylinder 500, piston rod 600 and high-pressure pipeline 700. Due to hydraulic drive, the speed of main motor 100 is ≤40r / Min can make the water output of the jet pump ≥ 4.3L / min, the water output is large, but this power drive system needs to have a complete set of hydraulic system, and the hydraulic system must have a cooling system, which has complex structure and high manufacturing cost. defect

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