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Vertical multi-stage centrifugal pump and constant-pressure water supply unit
The invention relates to a vertical multi-stage centrifugal pump which comprises a pump body, a motor, a cable and a base. The pump body and the motor are arranged on the base, the centrifugal pump further comprises a pump bowl, and the interior of the pump bowl is divided into an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are arranged up and down and communicated with each other. The pump body is arranged in the upper cavity, the motor is arranged in the lower cavity in a sealed mode, a water inlet is horizontally formed in the lower end of the lower cavity in the radial direction, the water outlet is communicated with the upper cavity through a fastening bolt, and the water outlet can be located in the lower end of the upper cavity in multiple horizontal directions. The centrifugal pump can avoid leakage caused by mechanical seal abrasion, water flowing in the centrifugal pump can cool the motor, the direction of the water outlet can be adjusted, and installation is convenient and quick. The invention further relates to a constant-pressure water supply unit which comprises a frequency converter and the vertical multi-stage centrifugal pump, the frequency converter is connected with the vertical multi-stage centrifugal pump in a sealed mode, and water flowing in the centrifugal pump can also cool the frequency converter.
Vertical multi-stage centrifugal pump and constant-pressure water supply unit
The invention relates to a vertical multi-stage centrifugal pump which comprises a pump body, a motor, a cable and a base. The pump body and the motor are arranged on the base, the centrifugal pump further comprises a pump bowl, and the interior of the pump bowl is divided into an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are arranged up and down and communicated with each other. The pump body is arranged in the upper cavity, the motor is arranged in the lower cavity in a sealed mode, a water inlet is horizontally formed in the lower end of the lower cavity in the radial direction, the water outlet is communicated with the upper cavity through a fastening bolt, and the water outlet can be located in the lower end of the upper cavity in multiple horizontal directions. The centrifugal pump can avoid leakage caused by mechanical seal abrasion, water flowing in the centrifugal pump can cool the motor, the direction of the water outlet can be adjusted, and installation is convenient and quick. The invention further relates to a constant-pressure water supply unit which comprises a frequency converter and the vertical multi-stage centrifugal pump, the frequency converter is connected with the vertical multi-stage centrifugal pump in a sealed mode, and water flowing in the centrifugal pump can also cool the frequency converter.
Vertical multi-stage centrifugal pump and constant-pressure water supply unit
CUI HONGZHANG (author) / SONG QIU (author) / TAN LIHUA (author)
2015-06-24
Patent
Electronic Resource
English
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