A Deep Well Double Tube High Suction Jet Centrifugal Pump

Abstract

The invention relates to the technical field of pumps for deep wells, and specifically relates to a double-pipe high-absorbing injection type centrifugal pump for a deep well. The centrifugal pump comprises a pump body, and a jet pump which is connected with the pump body; a water feeding cavity and a water discharging cavity are formed in the pump body; an impeller is arranged in the water discharging cavity; a first jetting device is arranged in the pump body; the water feeding cavity is communicated with a water inlet of the impeller through the first jetting device; the pump body further comprises a water discharging pipe which is communicated with an inner running channel of the first jetting device. The double-pipe high-absorbing injection type centrifugal pump for the deep well is applicable to the water pumping work in the deep well, and can achieve high pumping stroke, high water pumping height and large water pumping quantity; due to large water pumping quantity and high water pressure, a high pressure nozzle of the first jetting device in the pump body is difficulty blocked by foreign articles.

Description

technical field [0001] The invention relates to the technical field of deep well pumps, in particular to a deep well double-pipe high-suction jet centrifugal pump. Background technique [0002] At present, two kinds of equipment are usually used in deep well water extraction: one is a submersible pump, and the other is a deep well pump. [0003] The working principle of the submersible pump is that the motor configured by the pump is a submersible motor, and the pump and the motor are submerged into the bottom of the water as a whole when working. Because it is submerged in water, it has high requirements on the sealing of the motor, the product cost is high, and maintenance and maintenance are not easy; at the same time, the radial dimension of the submersible pump is large, so it is not easy to put it into a well with a small diameter to take water. Therefore, the application of submersible pumps is greatly restricted. [0004] Deep well pumps can be divided into two typ...

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Problems solved by technology

[0007] Since only part of the pressure provided by the impeller is used to press the water to the outlet pipe during work, the height of the pumped water is not high enough, and the other part of the pressure provided by the impeller is used to press water into the jet pump, so The water pressure obtained in the jet pump is not high enough, which leads to the suction lift of the deep well pump is not high enough, and also makes the pumping volume of the deep well pump small, which in turn makes the outlet pipe have a small water output.

[0008] In addition, because the water pressure obtained by the jet pump is not high enough, the style method makes the high-pressure nozzle in the pump body easily blocked by debris, which is also a major technical problem existing in deep well pumps at present.

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