Upward and downward double circulation stirring dispensing system

Abstract

The invention relates to the technical field of stirring dispensing in sewage treatment equipment. An upward and downward double circulation stirring dispensing system mainly comprises a dispensing tank, a liquid medicament storing box, a circular stirring pump feed pipe, electromagnetic valves A, B and C, a liquid medicament storing box discharge pipe, a liquid medicament conveying pipe, a rotor flow meter, a centrifugal pump and a stirring nozzle, and is characterized in that: the circular stirring pump feed pipe is connected to one side of the bottom of the dispensing tank; the liquid medicament storing box discharge pipe and the centrifugal pump are connected to one end of the circular stirring pump inlet pipe; the upper end of the circular stirring pump inlet pipe has a horizontal circular-arc structure; the pipe orifice of the circular stirring pump inlet pipe is positioned at a position which is two thirds of the total height of the dispensing tank; the discharge pipe is connected to one side of the bottom of the dispensing tank, and is connected with the liquid medicament storing box; a pump outlet pipe is connected with the liquid medicament conveying pipe and a stirring pipe respectively; the stirring pipe is connected with the stirring nozzle; the electromagnetic valve D is arranged on the stirring pipe; a liquid level sensor is arranged on the upper side part of the dispensing tank; an emptying pipe is connected to the center of the bottom of the dispensing tank; and the liquid medicament storing box is connected with the liquid medicament storing box discharge pipe. The upward and downward double circulation stirring dispensing system has the characteristics of dual functions of a single pump, saving in investment of the pump and mechanical stirring equipment, convenience in maintaining and easiness in operating.

Description

technical field [0001] The upper and lower double circulation stirring dispensing system of the present invention relates to the technical field of pump stirring and dispensing in sewage treatment equipment. Background technique [0002] The mixing and dispensing method of the agitator driven by the variable speed of the motor that is generally sold on the market and is being used in general sewage stations. [0003] The mixing form is mainly composed of a stirring motor, a high transmission ratio reducer, a mixing blade, a dispensing tank, a support stand, etc. The high transmission ratio reducer generally adopts a cycloidal pinwheel reducer, which has a complex structure and high manufacturing precision requirements , high cost, difficult maintenance, and high technical requirements for maintenance workers. Generally, when this kind of reducer fails, it will be replaced with a new one, resulting in high maintenance and repair costs. [0004] The dispensing process of sewa...

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Problems solved by technology

[0005] The mechanical stirring driven by motor stirring has complex structure, high manufacturing precision requirements, high cost, difficult maintenance, high technical level requirements for maintenance workers, long stirring time, large energy consumption, and high equipment idle rate

[0006] Application number: 200910039415.9 Chinese patent application for automatic dosing jet mixing and pump stirring sewage treatment system discloses a dispensing device using a pump as a stirring power, but the device has a defect: the dispensing water comes from a sewage pool, and the sewage will make the prepared The drug solution produces flocculation and precipitation, which reduces the efficacy of the drug, and the flocculated and precipitated matter is transported by the pump, and the flocculated dirt is re-stirred to lose the effect of flocculation

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