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1. What is the pump?

Answer: usually raise the liquid, transport the liquid or increase the pressure of the liquid, that is, the machine that turns the mechanical energy of the original power machine into liquid energy is collectively referred to as the pump. Stainless steel pumps, as the name suggests, are stainless steel pumps.

2, the classification of the pump?

Answer: pump uses are different. According to the principle of action, they can be divided into three categories:

Volume pump (2) vane pump (3) other types of pumps

3, the working principle of the volume pump? Give an example?

Answer: use the periodic change of working volume to transport liquid.

For example: piston pump, plunger pump, diaphragm pump, gear pump, slide plate pump, screw pump and so on.

4, the working principle of the vane pump? Give an example?

Answer: the liquid interaction is used to transport liquid.

For example: centrifugal pump, mixed flow pump, axial flow pump, vortex pump and so on.

5, the working principle of centrifugal pump?

A centrifugal pump depends on the effect of the rotating impeller on the liquid to transfer the mechanical energy of the original motive to the liquid. As the centrifugal pump moves from the inlet of the impeller to the outlet, the velocity and pressure can be increased to the pressure energy and then along the discharge line. Send it out. At this time, the side of the impeller inlet is vacuum or low pressure due to the discharge of liquid, and the liquid in the suction pool is pressed into the inlet of the impeller under the effect of liquid pressure (atmospheric pressure). As a result, the rotating impeller continuously inhaled and discharged liquid.

6, the characteristics of the centrifugal pump?

Answer: its characteristics are: high speed, small volume, light weight, high efficiency, large flow rate, simple structure, stable performance, easy operation and maintenance. The disadvantage is: before starting, the pump should be filled with liquid, and the viscosity will affect the performance of the stainless steel pump greatly. It can only be used for the viscous liquid near water. Flow range: 5-20000 m 3/, head range is 8-2800 m.

7. Several types of structural forms of centrifugal pumps? Their own characteristics and uses?

Answer: centrifugal pumps are divided into vertical pumps and horizontal pumps according to their structural forms. Vertical pump features: small footprint, small investment in construction, easy installation. The disadvantage is: the center of gravity is high, and it is not suitable for running without fixed foot. Horizontal pump features: extensive use, low center of gravity and good stability. The disadvantages are: large area, large investment in construction, large volume and heavy weight. For example: vertical stainless steel pump for pipeline pump, DL multistage pump, submersible pump and other horizontal jumping IS pump, D multistage pump, SH type double suction pump, B, BA, IH, IR. According to the requirements of head flow, according to the impeller structure and composition stage, it is divided into:

A single stage single suction pump: the pump is an impeller and an impeller on the impeller. General flow range: 5.5-2000 m 3/, lift at 8-150 meters, characterized by low flow and low lift.

2. Single stage double suction pump: the pump is an impeller, and the impeller has two levels of entry. General flow range: 120-20000 m 3/, head at: 10-110 m, large flow and low lift.

2. Single suction multistage pump: the pump is a plurality of impellers, the first impeller has an intake port, and the first impeller discharge chamber is the second impeller suction port, and so on. The general flow range is 5-200 meters 3/ and the lift is 20-240 meters, which is characterized by low flow and high lift.

8. What is the pipe pump? Its structural features?

Answer: the pipe pump is a single suction single stage centrifugal pump, a vertical structure, because its import and export in the same line, and the same import and export caliber, similar to a section of the pipe, can be installed in any position of the pipe as a pipe pump. The structure is characterized by single suction single stage centrifugal pump, the same inlet and outlet, and straight line on the same straight line and axis centerline, which is vertical stainless steel pump.