CN103291628A

CN103291628A - Multigroup magnetic pump

Info

Publication number: CN103291628A
Application number: CN2012100490177A
Authority: CN
Inventors: 黄佳华; 王明琪; 沈澎
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2013-09-11

Abstract

A multigroup magnetic pump comprises first inner magnet rotors, first outer magnet rotors and spacer sleeves, wherein one space sleeve is arranged between one group of the first inner magnet rotor and the first outer magnet rotor at the lowest end, contacted with a liquid, of a pump shaft; the upper end of a lower shaft is sleeved with the first inner magnet rotors; and a pair of bearing seats is arranged in the middle and at the lower end of the lower shaft in a back-to-back manner, and first bearings and second bearings which are arranged in the bearing seats are grease-lubrication-free ceramic rolling bearings. The pump shaft can reach a deep position below the liquid, the space sleeves are not arranged between a plurality of groups of inner magnet rotors and outer magnet rotors, and only a magnetic driver part at the lowest end of the pump adopts the spacer sleeves made of non-metallic materials. Static sealing gaskets are adopted for sealing, leakage can be prevented thoroughly; steam media can be prevented from leakage, and the bearings are not contacted with the media, so that eddy heat generation is avoided, dry running can be performed, the pump efficiency is improved, and the service life of the pump is prolonged; and the operation is stable and reliable, the assembly and the disassembly are convenient, and the cost is saved.

Description

Many group magnetic drive pumps

Technical field: the present invention relates to pump, particularly relate to a kind of many group magnetic drive pumps.

Background technique: the high temperature slurries transfer pump that at present domestic all chemical enterprises use, all adopt upper end, lower end at transmission shaft that the suspended structures of one group of sliding bearing, middle many group sliding bearings are housed, sliding bearing position, middle adapter and drain pipe add the steam insulation chuck to carry out steam insulation and prevents that slurries from solidifying.The high temperature slurries transfer pump of this pattern exists because sliding bearing is easy to wear, the unstable sulphur that makes of vapor (steam) temperature easily solidifies, and causing pump often to break down can not normally move, and has influenced the problem of ordinary production; Media depth is darker under the liquid under most operating modes, and existing transfer pump need arrange the rotations that many group sliding bearings support pump shaft, and often breaking down causes fluctuation of service, and the dismounting difficulty can not fully satisfy the needs of all operating modes; The pump processing request height of the type, dismounting difficulty, short, maintenance cost expense height of life cycle life-span.

Magnetic drive pump is widely used in chemical industry, oil, refinery, fields such as pharmacy poisonous, contain solid particle medium, contain the toxic gas medium, conveying near the boiling point medium, the medium of easy crystallization, adopt the extraordinary intensive of special magnetic circuit design method design, magneticfocusing, the soft transmission device of the magnetic force that the push-and-pull magnetic circuit is coupled, for the darker most operating modes of media depth under the liquid, can adopt the soft drive mechanism of many group magnetic force, can resolve into how the group structures link together by the pump that the degree of depth under the liquid is darker, automatic centering need not to proofread and correct during installation, can satisfy the working condition requirement of media depth under the dark liquid, and stable and reliable operation.

Summary of the invention: purpose of the present invention will provide a kind of many group magnetic drive pumps exactly, and it can overcome the existing problem of above product well.The object of the present invention is achieved like this, many group magnetic drive pumps, comprise magnet rotor in first, the first outer magnet rotor, separation sleeve, it is characterized in that: what contact with liquid on pump shaft is provided with separation sleeve between the magnet rotor outside the magnet rotor and first in one group first bottom, magnet rotor is enclosed within the upper end of lower shaft in first, the middle part of lower shaft and lower end are provided with pair of bearing back-to-back, the clutch shaft bearing that arranges in the bearing support, second bearing are no grease lubrication ceramic rolling bearing, adopt dry gas lubrication by trachea simultaneously; Between the interior magnet rotor of all the other some groups of N and the outer magnet rotor of N separation sleeve is not set on the pump shaft, the N bearing in the bearing support adopts common grease lubrication rolling bearing.Pump shaft of the present invention can reach the degree of depth under the very dark liquid, between magnet rotors and the outer magnet rotor separation sleeve is not set in some groups, partly adopts the separation sleeve of nonmetallic material making at one group of magnetic driver bottom of pump.Adopt the static seal gasket seal, guarantee not have any leakage.Bottom the no grease lubrication ceramic rolling bearing that arranges in one group of bearing support, inject dry gas and prevent that medium steam from leaking, stoping not contact medium of bearing.Avoid the generation of eddy current heat, can do running, improved the efficient of pump, prolonged the working life of pump; The automatic centering of the present invention's energy need not to proofread and correct, and the processing of component is not had specific (special) requirements, stable and reliable operation, and installation, convenient disassembly have been saved cost.

Description of drawings: Fig. 1 is structural representation of the present invention;

1. the pump housing, 2. impeller, 3. pump cover, 4. lower linking tube, 5. step, 6. lower shaft, 7. magnet rotor, 8. first outer magnet rotor B, the 9. separation sleeve in first, 11. last axle, magnet rotor in 12. upper connecting tubes, 13. N, 14. the outer magnet rotor of N, 15. motors, 16. cappings, 17. mounting plate, 18. drain pipe, 19. tracheas, 20. oil filler pipes, 21. N bearing, 24. middle adapter, 25. upper ball covers, 26. second bearings, 27. clutch shaft bearing, 28. impeller nuts.

Embodiment: the invention will be further described below in conjunction with accompanying drawing;

Many group magnetic drive pumps, comprise magnet rotor 7 in first, the first outer magnet rotor 8, separation sleeve 9, it is characterized in that: what contact with liquid on pump shaft is provided with separation sleeve 9 between the magnet rotor 8 outside the magnet rotor 7 and first in one group first bottom, magnet rotor 7 is enclosed within the upper end of lower shaft 6 in first, the middle part of lower shaft 6 and lower end are provided with pair of bearing back-to-back, the clutch shaft bearing 27 that arranges in the bearing support, second bearing 26 are no grease lubrication ceramic rolling bearing, adopt dry gas lubrication by trachea 19 simultaneously; Between the interior magnet rotor 13 of all the other some groups of N and the outer magnet rotor 14 of N separation sleeve is not set on the pump shaft, the N bearing 21 in the bearing support adopts common grease lubrication rolling bearing.During concrete enforcement, one. in pump top magnetic driver part, between magnet rotor 13, the outer magnet rotor 14 of N separation sleeve 9 is not set in the N, to not produce eddy current heat between magnet rotor 13, the outer magnet rotor 14 of N in such N, therefore the temperature of the interior magnet rotor 13 of N can not raise and cause demagnetization, guarantees that magnetic drive pump has higher efficient; Gap in the while N between magnet rotor 13, the outer magnet rotor 14 of N arranges less, can improve the torque force of magnetic transmission fully.The present invention can be resolved into the multistage minor axis with a major axis, be combined into one group of independently transmission part separately with bearing, bearing support, bearing gland and magnetic driver part component, for medium under the darker liquid of operating mode, can adopt the transmission part of the contactless soft connection device of many group magnetic force, make the built-in length of liquid sulfur pump can do very longly, and easy to assembly in assembly process, can automatic centering need not to proofread and correct, greatly reduce the difficulty of mach required precision and assembling.Magnetic drives is a kind of contactless soft connection device, and compared with positive drive, operation is stable more, reliable.

Two. except pump shaft bottom the rolling bearing in one group of bearing support, the rolling bearing in all the other some groups of bearing supports adopts common grease lubrication bearing, greatly reduces the manufacturing cost of this pump.

Three. the clutch shaft bearing 27 in one group of transmission part bottom of pump, second bearing 26 adopt no grease lubrication ceramic rolling bearing, adopt the gas lubrication of drying simultaneously, and can reach 3 years its dried running life; Dry gas has protection, sealing, lubricating functions; can stop the no grease lubricating bearing of fed sheet of a media contact; except flow passage components such as the pump housing, impeller and pump cover; all the other all rotatable parts all do not contact with the medium of carrying, guarantee not have rotatable parts such as grease lubrication rolling bearing, interior magnet rotor not because of the easy crystallization of fed sheet of a media, easily solidify, contain granule foreign and damage.

Four. the separation sleeve that adopts nonmetallic material to make is the patent of invention of our company, the patent No.: ZL 2,009 1 0231778.2, the specific resistance of nonmetal isolating sleeve is infinitely great, the on-stream eddy current heat that do not produce, need not adopt cooling liquid to cool off interior magnet rotor, take away the eddy current heat, the temperature of therefore inside and outside magnet rotor can not raise and cause the demagnetization phenomenon, guarantees that the contactless soft connection device of magnetic force has higher transmission efficiency and operation stability, makes magnetic force contactless transmission device can do running.

Five. sliding bearing is not set in the pump, adopts no grease lubrication rolling bearing, this bearing can bear the residual axial force that produces after balance, can bear the radial force of generation in service again, has improved stability, the reliability of pump operation, has prolonged the working life of pump.

Six. the back side of main impeller is provided with back blade, reduces the impeller back pressure in the pump operation process; Concurrently injected dry gas inlet pressure exceeds 0.2MPa than material pressure, can stop the steam of fed sheet of a media to leak and corrodes bearing, reaches the effect of the bearing that adequately protects.

Claims

1. organize magnetic drive pump more, comprise magnet rotor (7) in first, the first outer magnet rotor (8), separation sleeve (9), it is characterized in that: what contact with liquid on pump shaft is provided with separation sleeve (9) between the magnet rotor (8) outside the magnet rotor (7) and first in one group first bottom, magnet rotor (7) is enclosed within the upper end of lower shaft (6) in first, (60 middle part and lower end are provided with pair of bearing to lower shaft back-to-back, the clutch shaft bearing that arranges in the bearing support (27), second bearing (26) is no grease lubrication ceramic rolling bearing, adopts dry gas lubrication by trachea (19) simultaneously; Between the interior magnet rotor (13) of all the other some groups of N and the outer magnet rotor (14) of N separation sleeve (9) is not set on the pump shaft, the N bearing (21) in the bearing support adopts common grease lubrication rolling bearing.