Leak-free centrifugal pump

A centrifugal pump, no leakage technology, applied in the field of centrifugal pumps, can solve problems such as mechanical seal leakage, packing seal leakage, increase maintenance frequency and maintenance cost, and achieve the effect of ensuring stable operation and ensuring no leakage

Pending Publication Date: 2017-05-03
JIANGSU JIANGDA PUMP IND MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional centrifugal pump only includes the working impeller and mechanical seal or packing seal. The packing seal will cause leakage after running for a period of time or after the running-in period, and the mechanical seal will also cause leakage when it is used for a period of time.
Increased pump maintenance frequency and repair costs

Method used

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  • Leak-free centrifugal pump

Examples

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Embodiment Construction

[0008] Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail

[0009] As shown in the figure, a non-leakage centrifugal pump includes a pump casing 1. The pump casing 1 is provided with a water outlet 2 and a water inlet 3. A rotating shaft 4 is installed in the pump casing 1, and the end of the rotating shaft 4 is installed with a Working impeller 5, a pump cover 6 is installed on the end surface of one side of the pump casing 1, the rotating shaft 4 passes through the pump cover 6, the rotating shaft 4 is covered with a shaft sleeve 7, and the distance between the shaft sleeve 7 and the inner hole wall of the end cover 1 is from the inside to the outside A labyrinth seal 8 and an oil seal 9 are installed in sequence, an oil seal gland 10 is installed on the outer end surface of the pump cover 6, and the oil seal gland 10 squeezes the oil seal 9, and a sealing impeller 11 is arranged between the working impe...

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PUM

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Abstract

The invention relates to a leak-free centrifugal pump. The leak-free centrifugal pump comprises a pump casing, wherein a water outlet and a water inlet are formed in the pump casing; a rotating shaft is arranged in the pump casing; a working impeller is arranged at the end part of an extending end of the rotating shaft; a pump cover is arranged on the end face of one side of the pump casing; the rotating shaft penetrates through and is connected with the pump cover; a shaft sleeve sleeves the rotating shaft; a labyrinth seal and an oil seal are sequentially arranged between the shaft sleeve and the inner hole wall of the end cover from inside to outside; an oil seal gland is arranged on the outer end face of the pump cover and extrudes the oil seal; and a sealing impeller is arranged between the working impeller and the pump cover and is fixedly arranged on the rotating shaft.

Description

technical field [0001] The invention relates to a centrifugal pump, in particular to a non-leakage centrifugal pump. Background technique [0002] The traditional centrifugal pump only includes the working impeller and mechanical seal or packing seal. The packing seal will cause leakage after running for a period of time or after the running-in period, and the mechanical seal will also cause leakage after using for a period of time. Increased pump maintenance frequency and maintenance costs. Contents of the invention [0003] The purpose of the present invention is to provide a non-leakage centrifugal pump with good sealing performance. [0004] The technical scheme that the present invention takes is: [0005] A non-leakage centrifugal pump, comprising a pump casing, a water outlet and a water inlet are arranged on the pump casing, a rotating shaft is installed in the pump casing, a working impeller is installed on the end of the rotating shaft, and a The pump cover, t...

Claims

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Application Information

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IPC IPC(8): F04D1/00F04D29/10F04D29/20F04D29/66
CPCF04D1/00F04D29/106F04D29/20F04D29/669
Inventor 张明陈建章
Owner JIANGSU JIANGDA PUMP IND MFR
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