Plunger type metering pump

                                              Plunger type metering pump

Plunger metering pump is mainly ordinary both with and without valve valve pump pump. Plunger metering pump because of its simple structure and advantages of resistance to high temperature and high pressure is widely used in the field of petrochemical industry. Medium under high stress conditions with high viscosity in the lack of common plunger pump, a kind of valveless rotary piston pump is valued by more and more widely used in syrup, chocolate, cement grinding aid, the measurement of high viscosity medium and oil additives added. By measuring between medium and pump lubricant inside can't completely isolate the structural faults, plunger metering pump in the high pollution prevention requirements is limited by many fluid metering applications.

An overview of the
There are mainly ordinary both with and without valve valve pump pump. Plunger metering pump because of its simple structure and advantages of resistance to high temperature and high pressure is widely used in the field of petrochemical industry. Medium under high stress conditions with high viscosity in the lack of common plunger pump, a kind of valveless rotary piston pump is valued by more and more widely used in syrup, chocolate, cement grinding aid, the measurement of high viscosity medium and oil additives added. By measuring between medium and pump lubricant inside can't completely isolate the structural faults, plunger metering pump in the high pollution prevention requirements is limited by many fluid metering applications.

This type pump can deliver - 30 ℃ -- 100 ℃ temperature, viscosity was 0.3-800 / s corrosive or non corrosive liquid not containing solid particles, medium.

Different models of metering pump, are available according to the requirements with frequency conversion motor assembly (4-20 ma current signal) can receive or explosion-proof motor. Configuration: pump head can match explosion-proof insulation, cooling and motor

1, direct contact with the media part adopts stainless steel and ptfe material. Flow to adapt to the general particles, non-toxic tasteless.

2, double pump head structure, economical and practical, cover an area of an area small, superior performance.

All three, vulnerable parts through specialized processing, quality assurance.

4, internal configuration performance excellence regulator assembly, prolong the service life of pump, and reduce the noise.

5, quantitative output, can also be adjusted when pump running or stopping flow, high precision of plus or minus one percent.

A series of 6, spit out pressure at up to 500 kg.

7, is suitable for conveying temperature was minus 30 ~ 120 ℃, the viscosity of 0.3 ~ 800 was/s medium.

Second, the structure principle and characteristic

The structure of the pump: the pump by the motor, gear box, cylinder and so on three parts.

Gearbox parts by bow type connecting rod CAM mechanism, the stroke control mechanism and the ratio of worm gear mechanism; By rotating the handwheel by regulators impose higher to adjust stroke, distance from the surface before and after the change the bow type connecting rod to change piston (piston) the purpose of the trip.

Cylinder parts is by the pump head, suction valve, discharge valve, plunger Hector packing seal.

Working principle: the motor is approved by the coupling drive the worm and worm gear deceleration make main shaft and eccentric rotary motion, driven by eccentric bow type connecting rod inside the slide seat for reciprocating motion. When the plunger dead point move back, vacuum pump cavity gradually trip, suction valve to open, suction liquid. When the plunger dead center moving forward, the suction valve closed at this time, open the discharge valve, liquid discharge when the plunger from moving further. In the reciprocating pump suitable work also form a continuous pressure, quantitative liquid.

Flow control features:

Pump flow control is to rely on turn adjusting handwheel, drive the adjustment screw rotation, so as to change the distance between the bow type connecting rod, change the piston (piston) mobile trip to determine flow in the pump cavity size. Adjust the scale decision plunger stroke of the handwheel, the accurate rate was 95%.