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Working principle of polyurethane pouring metering pump

Date:2022-12-21 source:Shanghai JSN Micro Flow Meter CO.,LTD

sales01@cxflowmeter.com


Polyurethane pouring machine is used for multi-mode continuous production of rigid semi-rigid polyurethane products and polyester 

elastomer products. The metering pump of polyurethane pouring machine is a metering pump for assisting polyurethane pouring machine

 in pouring. In the case of low resistance (pressure loss), the precise metering of a small amount of liquid can still give a sufficient number of 

pulses for a small amount of rotation in the case of extremely slow gear rotation.


Working principle of polyurethane pouring metering pump


The motor drives the worm through the coupling, and the main shaft and the eccentric wheel rotate through the worm gear deceleration, and

 the eccentric wheel drives the sliding adjustment seat of the bow-shaped connecting rod to reciprocate. When the plunger moves backward 

to the dead point, a vacuum gradually forms in the pump chamber of the polyurethane pouring machine metering pump, the suction valve 

opens, and the liquid is sucked in; when the plunger moves forward to the dead point, the suction valve closes, the discharge valve opens, and

 the liquid Discharge when the plunger moves further. The reciprocating cycle of the pump forms continuous pressure and quantitative 

discharge of liquid.


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Selection Skills of Metering Pump for Polyurethane Pouring Machine


When selecting a metering pump for a polyurethane pouring machine, it is necessary to provide the product with the medium, displacement, 

viscosity, pressure, temperature, and what functions need to be achieved? Do I need a mounting plate? With servo motor inverter? Is there a 

PLC on site? If there are special requirements, it is necessary to discuss with the product party in advance whether it can be customized, and 

finally determine the selection of the polyurethane pouring machine metering pump.



If you want to know more about the parameters and quotations of PU metering pumps, 

please contact winny: sales01@cxflowmeter.com




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