Frequency conversion high-speed wet type submersible pump

Abstract

The invention discloses a frequency conversion high-speed wet type submersible pump relating to a fluid mechanical submersible pump and comprising a base (1), an impeller (3), a guide blade (4), a rear pump cover (5), a front sliding bearing (6), a thrust plate (7), a motor, a rear sliding bearing (11), a rear end cover (12), an outlet flange (14), an induction wheel (2), an auxiliary impeller (10), a filter (15) and a cooling pipeline (16), wherein the impeller (3) is connected with a motor shaft and is in a partially flowing or eccentric structure, the front end of the impeller (3) is provided with the variable pitch induction wheel (2), the outlet of the impeller (3) is provided with the guide blade (4); and the motor adopts a frequency conversion motor. The frequency conversion high-speed wet type submersible pump is a novel industrial pump with the advantages of small size, light weight, large lift, high efficiency and wide performance range, and is used for mine production drainage, permeable emergence and rescue and emergence drainage of other occasions.

Description

technical field [0001] The invention relates to a fluid mechanical submersible pump, in particular to a variable-frequency high-speed wet submersible pump, which is used for mine production drainage, permeable emergency rescue drainage and emergency drainage in other places. Background technique [0002] At present, ordinary mining submersible pumps are connected by a water-filled high-pressure submersible motor and a multi-stage centrifugal pump. The whole unit is large in size and weight, and it is inconvenient to install and transport; the motor is cooled by wading through the shell, which has poor effect and short service life. ; The speed of the pump is fixed, so the range of performance is narrow, and it is difficult to meet the requirements of mine drainage. Chinese patent CN2702095, patent No. 200320109940.1, a new mining submersible pump, discloses a new type of mining submersible pump, which is mainly composed of a motor, a pump body and a sealed outer cover. The ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing common mining submersible pumps, such as large volume, heavy weight, low head, narrow performance range, and poor cooling effect of the motor, and proposes a frequency conversion high-speed wet submersible pump, which realizes The high-speed operation of the submersible pump reduces the volume and weight of the unit, meets the requirements of high head and wide working performance range, and improves the cooling effect of the motor

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