Diaphragm Slurry Pump

The main technical feature of the diaphragm slurry pump developed and produced by our company is that a special diaphragm is used to isolate all the original parts of the piston cylinder in the piston pump from the conveyed medium, so that the diaphragm slurry pump can convey highly abrasive and corrosive granular media. It is this main technical feature that solves the wear problem of a large number of parts such as the piston cylinder, piston seal, piston rod, piston, etc., thereby achieving the ideal goal of extending the operating time of the equipment, reducing wearing parts, and reducing operating costs. The diaphragm slurry pump is a positive displacement non-leakage pump suitable for the conveying of solid-liquid two-phase media. The pump has been successfully applied in metallurgy, chemical industry, mining, non-ferrous metals, power plants, sewage treatment plants and other fields.

The advanced technical features of the diaphragm slurry pump make it truly realize the green concept of low consumption and environmental protection. The key technical indicators of the diaphragm slurry pump, such as safety, reliability, continuous operation rate and operating cost, are obviously better than those of oil isolation pumps, water flushing pumps and water isolation pumps. It has become an ideal new generation of reciprocating pumps for conveying toxic, corrosive media and media containing solid particles at high flow and high pressure, and will be more widely used.

Structure Introduction
The powerful power end of the diaphragm slurry pump is equipped with a gear reduction mechanism, plus an external pulley or reducer to reduce the speed of the pump, so that the speed of the pump can be reduced to 40-90RPM; the speed of the pump can be selected according to the different conveying media; the motor drives the crank-connecting rod mechanism through gears, converting the rotational motion into linear motion, driving the crosshead, piston rod and piston to reciprocate.

The hydraulic end of the pump is a crosshead that pushes the piston through the piston rod to make reciprocating motion. The movement of the piston drives the hydraulic medium to make the diaphragm do concave and convex motion. During the suction stroke, the diaphragm moves backward, the suction valve is opened, the discharge valve is closed, and the conveying medium enters the pump chamber; during the discharge stroke, the diaphragm moves forward, the suction valve is closed, the discharge valve is opened, and the conveying medium is discharged.

Technical Features
The "diaphragm mechanical limit automatic oil replenishment system" developed by our company can truly realize the stroke position control of the diaphragm rather than pressure control, which can prevent the diaphragm from being damaged in the case of over-stroke and greatly improve the service life of the diaphragm.

The wear resistance and reciprocating fatigue life of the special material diaphragm developed by our company have reached the ideal service life of industrial equipment. The diaphragm can be a bowl-type diaphragm or a flat diaphragm according to the needs of conveying fluid. The control oil replenishment valve stem of the bowl-type diaphragm is connected to the diaphragm as a whole and linked with the diaphragm. The diaphragm is made into a bowl shape so that the diaphragm is only subjected to bending stress but not tensile stress during reciprocating motion. The reciprocating stroke of the diaphragm can be larger, and the diaphragm diameter can be reduced at the same time. The flat diaphragm can be made into a double diaphragm structure.

Product Parameters
The main technical parameters of SPS series diaphragm slurry pump products are:
Flow rate: 5～200m3/h
Discharge pressure: 0～20MPa
Maximum solid particle size: 1mm
Medium temperature: ≤120℃
Maximum concentration: 75%