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Plunger pump

A technology of plunger pump and gear oil pump, which is applied in the field of construction machinery, and can solve problems such as debris entering, affecting normal use of equipment, sliding block and chute wear, etc.

Inactive Publication Date: 2016-06-01
ZHEJIANG ZHONGMEI MACHINERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by this invention is to overcome the problem that the splash lubrication used in the large flow emulsion pump in the prior art makes it easy for sundries to enter between the slider and the chute through the pin control, thus causing the slider and the slider to Groove wear, technical defects that affect the normal use of equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a plunger pump, refer to figure 1, the plunger pump of this embodiment includes a motor 10 ( figure 1 Not shown in) and the crankcase 20, the crankcase 20 is formed with a crankshaft groove and a chute for installing the crankshaft 31, the crankshaft 31 is rotatably arranged in the crankshaft groove, and can rotate under the drive of the motor 10.

[0051] A plunger 33, a slide block 35 and a connecting rod 34 are installed in the chute, wherein the plunger 33 is positioned at the front end of the chute, and it is fixedly connected with the front end of the slide block 35, and the rear end of the slide block 35 is connected with the connecting rod. 34 are rotatably connected, and the other end of connecting rod 34 is then rotatably connected with crankshaft 31. In this way, when the motor 10 drives the crankshaft 31 to rotate, the connecting rod 34 can drive the slider 35 and the plunger 33 to reciprocate in the chute, thereby providing power...

Embodiment 2

[0060] This embodiment is an improvement on the basis of Embodiment 1, and its difference compared to Embodiment 1 is:

[0061] refer to Figure 4 , the crankcase 20 in the present embodiment is a split structure, which includes a first part 21 and a second part 22 that are fastened and installed together. Preferably, the first part 21 and the second part 22 have general crankshaft grooves respectively, and the first part 21 After interlocking and installing with the second part 22, a complete crankshaft groove is formed. The advantage of such arrangement is that after the first part 21 and the second part 22 are separated, the crankshaft 31 can be taken out from the crankshaft groove.

[0062] As a preferred embodiment, on the longitudinal section of the first part 21 and the second part 22 , the joining surface of the two is a straight line forming an angle of 45° with the horizontal plane. The first part 21 and the second part 22 can be connected by fasteners such as conne...

Embodiment 3

[0076] This embodiment is an improvement on the basis of embodiment 1 or embodiment 2, and its difference compared to implementation 1 or 2 is:

[0077] refer to Figure 9As shown in the schematic diagram of the structure of the plunger 33 , the plunger 33 includes a plunger body 311 and a protective head 332 disposed on the plunger body 331 . After the plunger pump has been used for a long time, the end of the plunger 33 is prone to wear, thereby destroying its sealing performance, resulting in low efficiency in the process of absorbing and discharging liquid, and even easily causing equipment damage in severe cases. Due to the setting of the protective head 332 in this embodiment, after the protective head 332 wears out, the protective head 332 can be directly replaced without completely dismantling the crankcase 20 and replacing the plunger 33 as a whole, which not only improves the maintenance efficiency , It also reduces maintenance difficulty and maintenance cost.

[0...

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Abstract

The invention provides a plunger pump. The plunger pump comprises an electromotor, a crankcase, a crankshaft, a connecting rod, a plunger, a lubricating system, a gear oil pump and a circulating lubricating oil way, wherein a crankshaft groove for mounting the crankshaft, and a sliding chute for a slider connected with the plunger to perform reciprocating sliding are molded inside the crankcase; the crankshaft is mounted inside the crankshaft groove in the crankcase; the crankshaft is driven to rotate by the output shaft of the electromotor; the connecting rod is mounted inside the sliding chute in the crankcase; one end of the connecting rod is rotationally connected with the crankshaft; the other end of the connecting rod is fixedly connected with the slider so that the slider is driven to perform reciprocating sliding inside the sliding chute under the driving of the crankshaft; the plunger is connected with the slider and performs reciprocating motion inside a high-pressure cylinder sleeve under the driving of the slider in order to realize liquid suction and liquid discharging; the circulating lubricating oil way is connected with the gear oil pump; the gear oil pump is used for driving lubricating oil to pass through a lubricating oil pump so as to realize forced lubrication on moving components inside the plunger pump.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a plunger pump. Background technique [0002] The high-pressure and large-flow emulsion pump is a hydraulic power source designed for the support equipment of the fully mechanized mining face of large coal enterprises. It is the key equipment to achieve high production and high efficiency of the working face. Safe production and improving economic benefits are of great significance. With the development of coal mining technology in the direction of high technology, new requirements are put forward for the emulsion pump station, not only to ensure the flow and pressure of the pump, but also to ensure the service life and reliability of the pump, that is, to improve the trouble-free operating hours. At present, the emulsion pump with the largest flow rate in China reaches 550L / min, but compared with the high-end large-flow imported products, it cannot meet the perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/18F04B17/03
CPCF04B53/18F04B17/03
Inventor 袁建立杨加平杨勇陈仁建王博陈腾亚孔文平郑巨静曾凡卓王秀云
Owner ZHEJIANG ZHONGMEI MACHINERY TECH