Electric distribution quantitative device

Abstract

The invention relates to an electric distribution quantitative device. The electric distribution quantitative device is used for being connected to two ports of a flow channel and carrying out quantitative distribution on liquid. The electric distribution quantitative device comprises an upper fixing sheet, a lower fixing sheet, a quantitative rotor and a driving motor, wherein the upper fixing sheet is provided with a plurality of first holes and is used for being connected to one port of the flow channel, the lower fixing sheet is arranged on one end surface of the upper fixing sheet, is connected to the upper fixing sheet and is provided with a plurality of second holes, the multiple second holes are arranged corresponding to the first holes, the lower fixing sheet is used for being connected to the other port of the flow channel, the quantitative rotor is arranged between the upper fixing sheet and the lower fixing sheet, rotates around the axes of the upper fixing sheet and the lower fixing sheet and is provided with a plurality of quantitative holes with different apertures, the volume of the multiple quantitative holes corresponds to the quantitative distribution volume of the liquid, and the driving motor is connected to the quantitative rotor. According to the electric distribution quantitative device, the quantitation of the liquid can be rapidly completed by adoptinga cutting method, the quantitative speed is high, and the quantitative precision is high.

Description

technical field [0001] The invention relates to a quantitative pump, in particular to an electric distribution and quantitative device for accurate quantitative and multi-mode distribution of trace liquid. Background technique [0002] In the fluid control system, the system design tends to be more and more intelligent, miniaturized, and the quantitative accuracy is required to be higher and higher. The quantitative method in the traditional fluid control system is the volume quantitative method or the flow time control quantitative method. [0003] The structure used in the volumetric quantitative method is a syringe pump, and its quantitative method is indirect quantification through the stroke of the plunger driven by the motor in the syringe. Therefore, the quantitative accuracy of the volumetric quantitative method is affected by the structure of the motor movement, motor control program, and lead screw. The quantitative accuracy is not high, and the quantitative speed...

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Problems solved by technology

[0003] The structure used in the volumetric quantitative method is a syringe pump, and its quantitative method is indirect quantification through the stroke of the plunger driven by the motor in the syringe. Therefore, the quantitative accuracy of the volumetric quantitative method is affected by the structure of the motor movement, motor control program, and lead screw. The quantitative accuracy is not high, and the quantitative speed is slow, and other components such as solenoid valves are needed to complete the quantitative distribution function, resulting in a complex structure and high cost

[0004] The flow time control quantitative method is to complete the liquid quantitative by controlling the length of the constant flow fluid flow. This method requires stable fluid flow and precise time control to ensure accuracy. It is an indirect quantitative method, and it needs to be connected to a specific distribution system when it is distributed. , leading to its complex structure and low quantitative accuracy

[0005] Since the quantitative value level of the fluid control system of the prior art has been developed from the original milliliter level to the micro-level, or even smaller, the above-mentioned traditional fluid control system has been unable to meet the needs of the prior art. Therefore, there is an urgent need for a simple structure, A device with high quantitative accuracy and quantitative distribution function

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