Metering pump inlet pressure difference stabilizing device

Abstract

The invention relates to a metering pump inlet pressure difference stabilizing device. The metering pump inlet pressure difference stabilizing device is characterized by comprising a housing, a connection pipe and a valve body, wherein a liquid inlet and a liquid outlet are formed in the bottom of the housing, the connection pipe is arranged above the liquid inlet, one end of the connection pipe is communicated with a first pipeline, the other end of the connection pipe is connected with the valve body, the liquid outlet is communicated with a second pipeline, the valve body is composed of a valve seat, a valve core, a valve cover, a rocking handle, a pin, a rocking bar and a floating ball, the valve cover is arranged above the valve seat, a guide rod is arranged at the upper end of the valve core, the guide rod is stretched out of the valve cover, and matched with one end of the rocking bar arranged above the valve cover in contact mode, the pin is arranged on one side of the valve body, the rocking handle is matched with the pin in hinge mode, the rocking bar is arranged at the other end of the rocking handle in connection mode, and the floating ball is arranged at the tail of the rocking bar. The metering pump inlet pressure difference stabilizing device not only meets dosing accuracy requirements of a user, but also reduces use cost of the user, improves cost performance of products, and improves product competitiveness.

Description

technical field [0001] The invention relates to a metering pump inlet pressure difference stabilizing device. Background technique [0002] At present, in the chemical industry, petroleum, pharmaceutical and other industries, liquid and liquid are added and mixed according to a certain ratio, or liquid is quantitatively added and solid agent is mixed to form a new product, but there are extremely high requirements for the accuracy of liquid dosage, such as Dosing too much or too little medicine may not only fail to cure the disease, but also become a kind of poison. In the case of constant pressure at the laboratory inlet, high-precision metering pumps on the market can fully meet the dosing accuracy requirements, but in actual use, especially in the usual mode of setting the metering pump at the bottom of the liquid storage tank, the As the metering pump works and the liquid is added, the liquid in the liquid storage tank gradually decreases, the pressure difference betwee...

AI Technical Summary

Problems solved by technology

Due to this defect, manufacturers are currently forced to interlock metering pumps and flowmeters, and order the metering pumps to change the flow rate instantaneously through the flowmeter signal feedback to meet the process requirements. times or even dozens of times the price, and finally transfer this cost to consumers

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