Types of self priming pump couplings

The types of self priming pump couplings include the following:

Gear coupling: This is a common type of self priming pump coupling, consisting of two different gears that can transmit a large amount of torque. Its characteristics are smooth transmission and high reliability, suitable for self priming pumps with high power and speed.

Elastic coupling: This is a type of coupling that transmits power through elastic deformation. It has a simple structure, small volume, light weight, stable and reliable torque transmission, and is suitable for small self priming pumps. At the same time, it is also suitable for working environments with frequent starting, forward and reverse rotation, medium to high speed, medium torque, and high reliability requirements.

Universal joint coupling: This coupling can rotate freely in different directions and compensate for the axis deviation and angle deviation between the self suction pump and motor. Its characteristics are smooth operation, low noise, and long service life, suitable for self priming pumps with high rotational speed and high vibration.

Claw type coupling: The middle slider of the claw type coupling is made of laminated wood or polyurethane, which is lightweight, simple in structure, easy to install, and cost-effective. It is commonly used in low-power situations.

Column pin coupling: The column pin of the column pin coupling is covered with a rubber ring, which has the ability to be elastic and compensate for axis displacement. However, when the relative angular displacement is large, it is prone to wear and tear. It has a simple structure, convenient installation, easy replacement, small size, light weight, and high transmission torque, and is widely used in various rotary pumps.

Diaphragm coupling: The diaphragm coupling compensates for the relative displacement of the two connected axes by the elastic deformation of the diaphragm, and is a high-performance metal elastic element flexible coupling. It does not require lubrication, has a compact structure, high strength, long service life, no rotational clearance, is not affected by temperature and oil pollution, and has the characteristics of acid resistance, alkali resistance, and corrosion resistance. It is suitable for shaft transmission in high-temperature, high-speed, and corrosive medium working conditions.

In addition, belt pulley couplings, high elastic tooth couplings, and steel plate couplings are often used in the connection of diesel self-priming pumps.

The above are the main types of self priming pump couplings, each with its specific application scenarios and characteristics. When selecting a coupling, it is necessary to consider factors such as the working conditions, power, and speed of the self priming pump.