Nearly-zero inner leakage stainless steel magnetic drive pump

An internal leakage, magnetic pump technology, which is applied to the components of the pumping device for elastic fluid, the pump, the pump device, etc., can solve the problems such as the inefficiency of the magnetic pump, the reduction of the pump work efficiency, and the increase of the axial gap. , to achieve the effect of increasing operating safety, improving work efficiency and reducing frictional resistance

CN105020147AInactive Publication Date: 2015-11-04高涵文
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-11-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a nearly-zero inner leakage stainless steel magnetic drive pump; a pump shaft and an impeller and inner and outer worm body walls are matched and mounted through a weight-carrying roller bearing, an axial ball bearing and a seal ring, thus reducing vibrations and noises caused by poor impeller dynamic balancing, effectively stopping axial floating of the pump shaft and the impeller, reducing friction heat, so the pump can do idle running in certain time period, and magnetic drive pump anti dry grinding performance can be enhanced; inner parts of a pump cavity are made of corrosion resisting material, thus improving magnetic drive pump corrosion resisting performance; a gap [delta] is kept in a seal ring friction pair outer circumference end face, so no friction heat is generated; on an seal ring friction pair inner circumference end face, slide friction is changed into rolling friction so as to reduce heat generated through friction; liquid flowing back from an impeller exit is thrown out along an oblique slot, and a little of remaining backflow fluid passes the seal ring friction pair inner circumference end face and re-thrown by a ball, thus increasing sealing effect, effectively preventing magnetic drive pump inner leakage, and improving magnetic drive pump work efficiency.
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Description

technical field

[0001] The invention relates to a magnetic force pump, in particular to a stainless steel magnetic force pump with near zero internal leakage. Background technique

[0002] The magnetic pump is different from the traditional sealed pump. The motor shaft and the pump shaft are not directly connected, but the motor shaft drives the outer magnetic rotor to rotate. The outer magnetic rotor and the inner magnetic rotor cooperate to drive the inner magnetic rotor to rotate through magnetic force. The rotor drives the pump shaft to rotate, so that the impeller rotor on the pump shaft rotates to work. There is a sealing cavity formed by a spacer sleeve between the inner magnetic rotor and the outer magnetic rotor of the magnetic pump, which seals the pump shaft and the inner magnetic rotor in the sealing cavity. One can prevent the liquid from leaking from the pump shaft end to the outside, and the other can prevent the pump from leaking. The shaft and the inner mag...

Examples

Embodiment

[0022] Embodiment: A stainless steel magnetic pump with near-zero internal leakage, including a pump shaft 7, an impeller 2, an inner magnetic rotor 5, an outer magnetic rotor 6, a spacer 4, an inner worm wall 3, an outer worm wall 1, a first The radial roller bearing 9, the second radial roller bearing 11, the sealing ring 8 and the axial ball bearing 10, the inner magnetic rotor 5 is fixedly installed on the shaft end of the pump shaft 7, and the outer magnetic rotor 6 is installed on the shaft end of the motor. An isolation sleeve 4 is arranged between the inner magnetic rotor 5 and the outer magnetic rotor 6. The material of the isolation sleeve is zirconia. The isolation sleeve 4 is sealed and fixedly connected with the outer shell of the inner worm wall 3. The outer worm wall 1 and the inner worm wall 3 The outer volute wall 1, the inner volute wall 3 and the isolation sleeve 4 are closed to form a pump cavity. When the magnetic pump is working, the external driving forc...