Multistage water pump and method of using the same

Abstract

The invention relates to a multi-stage water pump and a using method thereof. The multi-stage water pump comprises a vacuum cavity, wherein a water drawing mechanism comprises a pump body; a water outlet and a water inlet which communicates with the vacuum cavity are arranged on the pump body; a multi-stage impeller vane mechanism which is driven by a motor to rotate is arranged in the pump body; a water drawing port positioned at the inner bottom of the vacuum cavity is arranged at the bottom of the pump body; and a one-way valve used for preventing water from flowing back to the vacuum cavity is arranged on the water drawing port. The multi-stage water pump provided by the invention is simple in structure and high in lift.

Description

technical field [0001] The invention relates to a multi-stage water pump and its usage method. Background technique [0002] Pumps are an area with a high market share in electromechanical products. All walks of life and industries, including households without running water in rural areas, use pumps. From 1983 to 1998, manufacturers of small and medium-sized pumps developed rapidly and exported them. The volume occupies the first place in the mechanical and electrical products, and makes a great contribution to employment and foreign exchange earning. [0003] Since 1998, the pump industry has not reformed and changed as fast as other products. It has only added the same type of varieties to the basic modules or made some reforms in the parts. Therefore, the pump looks like a product with a very simple structure on the surface. The pump is a highly difficult product with irregular use places. The use of the pump is extremely complex, and the application occasions are ever-...

AI Technical Summary

Problems solved by technology

[0003] Since 1998, the pump industry has not reformed and changed as fast as other products. It has only added the same type of varieties to the basic modules or made some reforms in the parts. Therefore, the pump looks like a product with a very simple structure on the surface. The pump is a highly difficult product with irregular use places. The use of the pump is extremely complex, and the application occasions are ever-changing. It can withstand various hot and cold liquids, including flow, head, and suction. Low performance, which brings great difficulty to the pump reform. There has been no outstanding reform in the pump for more than 20 years, and it is the most outdated product in the electromechanical industry.

[0004] Common products of industrial pumps, most of them are volute type, horizontal machine plate base, bulky, occupying space, limited installation, cumbersome use, the original horizontal vertical multistage pump made of cast iron has low fluid rate, large volume and Consumables, low energy efficiency, no distortion protection device, no return valve equipment, often rely on multiple liquid vacuums during use, start up and wait for the separation of steam and water to rely on successive water vacuums to work normally, and lose vacuum again after shutdown and then fill again. , The use process takes a lot of time and is cumbersome

Images