3d-sy750 series electric pressure test pump developed and produced

  The 3d-sy750 series electric pressure test pump developed and produced by our factory is the replacement product of the current two cylinder and four cylinder electric pressure test pump
The product has the characteristics of small volume, compact structure, stable operation, safety and reliability, complete function, large flow, high efficiency, wide application range, strong compatibility and simple operation

purpose
The pump can be used in all kinds of pressure vessels, boilers, pipe fittings and other places where pressure burst test and strength test are required
The test pressure value can be locked according to needs, and automatic pressure holding can be carried out
The transmission medium of the pump is generally clean water at normal temperature, and emulsion, antirust water and neutral oil with similar viscosity to water can also be used
Equipped with cleaning accessories, the machine can also be used as a cleaning machine

Main structure and working principle
The machine is mainly composed of high-pressure reciprocating pump, overflow valve (no such part for specifications above 40MPa), check pressure relief valve, high-pressure hose, etc
1
High pressure reciprocating pump: this pump is a horizontal three plunger pump driven by motor, which is divided into power end and hydraulic end
(1) Power end: it is composed of belt pulley, crankshaft, connecting rod, etc
The motor drives and decelerates through the belt pulley to drive the crankshaft to rotate
The crankshaft connecting rod mechanism converts the rotating motion into linear reciprocating motion and drives the plunger to reciprocating motion
(2) Hydraulic end: it is composed of plunger pair, cylinder block, pump head, inlet and outlet valve group, safety valve, etc
The connecting rod drives the plunger to move back and forth to make the volume in the cylinder change periodically
When the plunger is in the suction stroke, the water outlet valve is closed, and the working medium pushes the water inlet valve to enter the cylinder under atmospheric pressure; During the discharge stroke, the inlet valve is closed, and the plunger passes the working medium through the outlet valve and discharges it through the pump head
The process is repeated periodically, so as to complete the function of the pump to suck in and discharge the working medium

  2
The overflow valve is used to regulate the output pressure of the pump and constant system pressure
Rotate the adjusting nut clockwise to increase the output pressure of the pump, otherwise, the output pressure decreases
When the pressure maintaining test is carried out, when the system pressure reaches the set pressure value, turn the adjusting nut counterclockwise to open all the overflow valves to remove the discharge pressure of the pump
When the user needs constant pressure output, just adjust the pressure to the set value and lock the locknut 3
The check pressure relief valve is used to automatically cut off and maintain pressure and discharge system pressure
After the pressure maintaining test, open the hand wheel of the pressure relief valve to remove the system pressure
In the process of boosting, if the system pressure is higher than the set value due to misoperation, the handwheel of the pressure relief valve can be properly opened, and the pressure can be boosted again after removing part of the pressure
A pressure gauge is installed on the valve to display the pressure of the pressure test pipeline in the process of boosting and maintaining pressure&# 8203;