Adjustable quantitative injection pump

A quantitative injection and adjustable technology, which is applied in the field of syringe pumps, can solve the problems of injection and sampling pipeline pollution, troublesome control, difficult to eliminate, etc., and achieve the effects of stable and reliable operation, simple structure, and easy control
CN102518573BActive Publication Date: 2014-11-26JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2014-11-26

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Abstract

The invention relates to an adjustable quantitative injection pump. A speed reduction motor is arranged on a pump body. A rotating block is fixed on an output shaft of the speed reduction motor. An adjusting screw rod vertical to the output shaft of the speed reduction motor is arranged on the rotating block. A sliding block drive pin is arranged on the adjusting screw rod. The axis of the sliding block drive pin is deviated from the axis of the output shaft of the speed reduction motor. The sliding block drive pin is matched in a transverse groove of a sliding block in a sliding mode. The sliding block is matched on a vertical sliding block guide rod in a sliding mode. A vertical drive rod is fixed on the sliding block. The drive rod is connected with a push rod of a syringe through a linkage block. According to the invention, a transmission mechanism of the syringe is formed by the speed reduction motor, the rotating block, the sliding block drive pin, the sliding block and the drive rod and drives the push rod of the syringe to take the piston motion, wherein the sliding block drive pin is arranged on the adjusting screw rod and the eccentricity of the sliding block drive pin relative to the output shaft of the speed reduction motor can be regulated, so that the output of the syringe is regulated. The adjustable quantitative injection pump has simple structure and low cost, is stably and reliable to operate and is simple and convenient to control.
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Description

technical field

[0001] The invention relates to a syringe pump for sampling water samples in a water quality on-line automatic monitoring device, in particular to an adjustable quantitative syringe pump. Background technique

[0002] In the existing water quality on-line automatic monitoring device, three types of water samples are mainly used for sampling water samples: micro-injection pumps, industrial injection pumps and peristaltic pumps.

[0003] The micro syringe pump mainly realizes liquid suction and discharge through the diaphragm and plunger, but the displacement of the pump is fixed, and it is impossible to change the pump volume on one pump. If you want to change the pump volume, you need to replace it with a new pump. , and the cost is high, and it is difficult to meet the needs of use in some occasions that require multiple injections without interfering with each other.

[0004] Most industrial syringe pumps use motor components and the propulsion mechanism c...

Claims

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