Immersed pumping device

A pumping device and submerged technology, which is applied in the direction of pump devices, rotary piston pumps, liquid displacement machinery, etc., to achieve the effects of reducing pressure, reducing load and prolonging service life

Active Publication Date: 2014-12-03
ENG EQUIP CO LTD SUZHOU SAI SIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the face of the demand for large head, reducing the pressure at the outlet has become a difficult problem

Method used

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  • Immersed pumping device

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the submerged pumping device of the present invention includes a housing 2 with a screw cavity 1, a set of screws 3 arranged in the screw cavity 1, the lower end of the screw 3 is connected with a water inlet 4, and the upper end is connected with a water outlet 5, The inner wall of the water inlet 4 has a spiral structure, the front and rear ends of the screw shaft 6 are supported by bearings 7, the screw shaft 6 is connected to the first motor 9 through a transmission mechanism 8, and the water inlet section of the water outlet 5 has a drum-shaped chamber 11, which is connected with the drum-shaped The water outlet channel 5 connected to the chamber 11 also has a spiral structure, and an impeller 12 is installed in the drum-shaped chamber 11, and the impeller 12 has 7 blades. The water inlet of the drum-shap...

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Abstract

The invention relates to an immersed pumping device which comprises a casing and screw rods, wherein screw shafts are connected with a first motor through a drive mechanism; a drum type chamber is formed in a water inlet section of a water outlet channel, an impeller driven by a second motor is mounted in the drum type chamber, pressure adjusting cavities are formed in the casing at the rear ends of the screw shafts, the rear ends of the screw shafts are inserted into the pressure adjusting cavities, sealing filler is embedded into gaps between the pressure adjusting cavities and the screw shafts, a hydraulic oil pump is connected with the pressure adjusting cavities through pipelines, and pressure sensors used for monitoring water pressure are arranged at the upper end and the lower end of a screw rod cavity respectively. On one hand, an impeller type water pump is arranged at a water outlet of a screw pump, and the pressure of the water outlet of the screw pump is reduced through working of the water pump; on the other hand, positive pressure is input into the pressure adjusting cavities through the hydraulic oil pump, and bearings are upwards pushed; and accordingly, in combination of the two aspects, the counter acting force borne by the screw shafts is reduced, the load and the abrasion of the bearings are reduced, and the service life of a submersible pump is prolonged.

Description

technical field [0001] The invention relates to a water pumping device, in particular to a submerged water pumping device. Background technique [0002] Submersible pump is an important device for pumping water from deep wells, and is widely used in industry and agriculture. [0003] Generally speaking, according to the principle of drainage, water pumps can be divided into: 1. Impeller pumps, such as: centrifugal pumps, mixed flow pumps, axial flow pumps, etc., swirl pumps; 2. Positive displacement pumps, such as: plunger pumps, gear pumps, Screw pump, vane pump, etc.; 3. Other types, such as: jet pump, water hammer pump, etc. [0004] The screw pump belongs to positive displacement pump, with high head and low flow rate, especially suitable for loose viscous liquid. When the screw rotates at a high speed, the back-end bearing is subjected to greater pressure, which accelerates wear and also limits the speed of the screw pump. The pressure on the bearing mainly comes fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B23/12F04C2/16F04C15/06F04C14/00F04C14/28
Inventor 陆俊芳马巧根周长根候潇寒张薇华
Owner ENG EQUIP CO LTD SUZHOU SAI SIDE
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