Eccentric adjustable plunger pump

Abstract

The invention discloses an eccentric adjustable plunger pump which comprises an adjustable eccentric wheel and a plunger pump body. A vibrating device comprises a large cylinder and a small cylinder, wherein the large cylinder is in loose fit with the small cylinder, and the small cylinder can be plugged into the large cylinder. The small cylinder is connected with a motor rotating shaft, and the axis of the small cylinder is parallel to but not coincide with the axis of the motor rotating shaft. The large cylinder is provided with an adjustable countersunk head lock screw, the front end of the screw is provided with a conical surface, and the screw is screwed to enable the conical surface at front end of the screw to extrude the surface of the small cylinder so as to fully lock the large cylinder and the small cylinder. The plunger pump body comprises a plunger, a cylinder body and a reset spring. The plunger moves up and down in a reciprocating mode through the eccentric wheel and the reset spring, and the lower end of the cylinder body is provided with a pipe connector. The eccentric adjustable plunger pump is simple, reasonable and durable in structure, convenient to use and practical, the stroke of the plunger can be continuously adjusted by adjusting the relative position a machine in a stepless mode, and large-scale reagent flow adjusting and conveying can be conveniently achieved according to motor speed adjusting.

Description

technical field [0001] The invention relates to an eccentric adjustable plunger pump. Background technique [0002] Plunger pumps are widely used in the fields of food, medicine, and biochemistry. The main purpose is quantitative filling and delivery of liquids. Most of the existing liquid filling and delivery pumps are roller-type. The electronic circuit controls the speed of the center frame of the mechanism, and the roller rolls the elastic plastic tube to realize the liquid delivery with the flow rate in the tube equal to the rolling speed. This delivery method is stable and reliable, but there are also fatigue damages caused by repeated rolling of the plastic tube. [0003] At the same time, this kind of transportation adjusts the flow rate through speed regulation. The amount of material that is more suitable for conveying is generally small, and it is inconvenient to adjust the single-time liquid delivery volume, which often cannot meet the applications that require l...

AI Technical Summary

Problems solved by technology

[0002] Plunger pumps are widely used in the fields of food, medicine, and biochemistry. The main purpose is quantitative filling and delivery of liquids. Most of the existing liquid filling and delivery pumps are roller-type. The electronic circuit controls the speed of the center frame of the mechanism, and the roller rolls the elastic plastic tube to realize the liquid transportation with the flow rate in the tube equal to the rolling speed. This delivery method is stable and reliable, but there are also fatigue damages caused by repeated rolling of the plastic tube.

[0003] At the same time, this kind of transportation adjusts the flow through speed regulation, which is more suitable for conveying a small amount of material, and it is not convenient to adjust the single-time liquid delivery volume, which often cannot meet the application occasions that require a large transportation flow.

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