Work principle:

DOSAKI series metering pump consists of motor, drive end and hydraulic end. The electric motor drives the eccentric mechanism to rotate through the worm gear, and the eccentric mechanism drives the diaphragm through the push rod. The regulating mechanism realizes the flow control by adjusting the eccentric distance. Diaphragm reciprocates with preset stroke length. The diaphragm is pulled back to allow the medium to flow into the chamber through the check valve. The diaphragm is pushed forward so that the same amount of medium is discharged from the outlet check valve. Continuous suction and discharge to achieve precise transfer of medium.

Assembly and testing video

Product features

1. More balanced and stable stroke adjustment mechanism

The stroke adjustment lever adjusts the eccentric stroke, and the adjustment lever is newly designed with a shaft sleeve. Due to the limitation of the number of teeth, the pure thread and teeth bite is not enough to withstand the impact brought by the transmission, resulting in increased wear and decreased accuracy. The new shaft sleeve can make the adjustment lever more stable and reliable.

2.Double-diaphragm structure

The fluid chamber is a double-diaphragm chamber design, which is independent of the transmission chamber. When the main diaphragm is broken, the auxiliary diaphragm can also effectively prevent the medium from entering the transmission chamber and play a role in maintaining the transmission chamber. The double-diaphragm structure provides convenience for the installation of leakage alarm later.

3. High precision worm gear

The worm gear is machined and ground with high precision by special machinery, with good coupling, low wear and high transmission efficiency

4. Structural coupling eccentric transmission mechanism

The cam and the transmission shaft adopt structural coupling, simple structure design, high degree of cohesion and strong impact resistance.

5. Closed transmission chamber

The top of the transmission chamber is designed with a bearing and a cover plate, and the worm and the bearing are cohesive, with higher concentricity and improve motor output efficiency. At the same time, the closed design can prevent the accumulation of oil at the output end of the motor and prevent the entry of dirt to make the operation more stable and efficiency.

6. High-strength diaphragm

Diaphragm is made of multilayer composite material. The surface layer is made of high-toughness Teflon material, the middle layer is supported by an iron core, and the back layer is reinforced with rubber and nylon fabric and overmolded, which is durable.