A precision metering ceramic plunger injection pump

Abstract

The invention discloses a precision metering ceramic plunger liquid charge pump which structurally comprises a pump head, two single-direction valves, a pump body, a driving mechanism and a control driving unit. The singe-direction valves are connected into thread holes in the pump head through threads on upper valve bases and lower valve covers. The pump head penetrates through four through holes through inner hexagonal bolts, and the pump head and a pump body outer shell are fastened on a driving outer shell. A motor base is fastened on the driving outer shell by the fact that inner hexagonal bolts penetrate through four through holes. A driving motor is fastened on the motor base by the fact that inner hexagonal bolts penetrate through four through holes. One end of a plunger core in the pump body is connected with inner threads of a floating connector in the driving mechanism through outer threads. The driving mechanism is connected with the control driving unit. The liquid charge pump has corrosion resistance and abrasion resistance, impurities are not mixed into ceramic, so that the fact that medicine liquid is not contaminated during a liquid-charge process is guaranteed, the roughness of the surface of the ceramic is low, on-line washing is easy, and accuracy and speed are improved.

Description

technical field [0001] The invention relates to a liquid injection pump, in particular to a precise metering ceramic plunger liquid injection pump. Background technique [0002] Metering pumps, especially more sophisticated metering pumps, have been widely used in filling equipment in the fields of pharmaceuticals, biological reagents, and petrochemical industries due to their high-precision control of fluid metering and strong corrosion resistance. Existing metering pumps generally include three parts: drive motor, drive end and fluid end. The state can change the stroke speed and stroke length or the speed of the drive motor through the control parameters of the drive motor to achieve the purpose of changing the flow rate. The current metering pump has undergone continuous development and improvement, and has formed three mainstream product shapes of plunger, diaphragm and catheter peristalsis. The mature power drive method and liquid end material technology make the cur...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a precision metering ceramic plunger injection pump, which is corrosion-resistant and wear-resistant, solves the problems of impurities and short life, and solves the need to add lubricant between the plunger and the sealing ring The problem

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