CN202483895U

CN202483895U - Multiple-group magnetic drive pump

Info

Publication number: CN202483895U
Application number: CN2012200701173U
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: 2012-10-10
Anticipated expiration: 2022-02-28

Abstract

A multiple-group magnetic drive pump comprises first inner-magnetic rotors, first outer-magnetic rotors and a separating sleeve. The separating sleeve is arranged between a group of the first inner-magnetic rotors and the first outer-magnetic rotors on a lowermost end, the group of the first inner-magnetic rotors and the first outer-magnetic rotors are arranged on a pump shaft and contacts liquid, the first inner-magnetic rotors are sleeved on an upper end of a lower shaft, a pair of bearing seats is arranged back-to-back on the middle and a lower end of the lower shaft, and the bearing seats are provided with a first bearing and a second bearing which are non-grease-lubrication ceramic antifriction bearings. The pump shaft can reach a deep under-liquid depth, the separating sleeve is not arranged between multiple groups of inner-magnetic rotors and outer-magnetic rotors, and the separating sleeve made of nonmetal material is arranged only on the group of magnetic drive on the lowermost end of the pump. A static sealing gasket is used for sealing, and therefore a leakage is ensured not to happen, a medium steam leakage is avoided, and a bearing is prevented from contacting the medium. The multiple-group magnetic drive pump can avoid eddy heat and carry out dry running, and therefore efficiency of the pump is improved, and service life of the pump is prolonged. In addition, the multiple-group magnetic drive pump is stable and reliable in running and convenient to mount and disassemble, and saves cost.

Description

A kind of many group magnetic drive pumps

Technical field: the utility model relates to pump, particularly relates 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; The suspended structures of one group of sliding bearing, middle many group sliding bearings are equipped with in upper end, the lower end that all is employed in transmission shaft, and sliding bearing position, middle adapter and drain pipe add the steam insulation chuck to carry out steam insulation and prevent 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 is prone to solidify, 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 be provided with the rotation that many group sliding bearings support pump shaft, and often breaking down causes fluctuation of service, and dismounting is difficult, can not fully satisfy the needs of all operating modes; The pump processing request of the type is high, dismounting is difficult, the life cycle life-span is short, the maintenance cost expense is high.

Magnetic drive pump adaptable across fields such as chemical industry, oil, refinery, pharmacy poisonous, contain solid particle medium, contain the toxic gas medium, near the conveying of boiling point medium; Be prone to the medium of crystallization; The soft transmission device of magnetic force that extraordinary intensity, magneticfocusing, the push-and-pull magnetic circuit that adopts special magnetic circuit design method to design is coupled for the darker most operating modes of media depth under the liquid, can adopt the soft drive mechanisms 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: the purpose of the utility model will provide a kind of many group magnetic drive pumps exactly, and it can overcome the existing problem of above product well.The purpose of the utility model is to realize like this; A kind of many group magnetic drive pumps comprise magnet rotor in first, the first outer magnet rotor; Separation sleeve; It is characterized in that: what on pump shaft, contact with liquid is provided with separation sleeve between the magnet rotor outside the magnet rotor and first in one group first bottom, and magnet rotor is enclosed within the upper end of lower shaft in first, and the middle part of lower shaft and lower end are provided with pair of bearing back-to-back; The clutch shaft bearing that is provided with in the bearing support, second bearing are no grease lubrication ceramic rolling bearing, adopt dry gas lubrication through trachea simultaneously; Between 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.The utility model pump shaft 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.The no grease lubrication ceramic rolling bearing that is provided with in one group of bearing support bottom, 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 utility model ability 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 practiced thrift cost.

Description of drawings: Fig. 1 is the utility model structural representation;

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

Embodiment: the utility model is described further below in conjunction with accompanying drawing;

A kind of many group magnetic drive pumps; Comprise magnet rotor 7 in first; The first outer magnet rotor 8, separation sleeve 9 is characterized in that: what on pump shaft, contact with liquid 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, and the clutch shaft bearing 27, second bearing 26 that are provided with in the bearing support are no grease lubrication ceramic rolling bearing, adopt dry gas lubrication through trachea 19 simultaneously; Between 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 practical implementation; One. the magnetic driver part on pump top; 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 is provided with less, can improve the torque force of magnetic transmission fully.The utility model can resolve 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,, can adopt the transmission paries of the contactless soft connection device of many group magnetic force for medium under the darker liquid of operating mode; 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 that 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 that flow passage components such as the pump housing, impeller and pump cover; All the other all rotatable parts all contacts 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, be prone to 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, and 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 after balance, produces, and 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 one kind more; Comprise magnet rotor (7) in first; The first outer magnet rotor (8), separation sleeve (9) is characterized in that: what on pump shaft, contact with liquid 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 and the lower end of lower shaft (6) are provided with pair of bearing back-to-back, and the clutch shaft bearing that is provided with in the bearing support (27), second bearing (26) are no grease lubrication ceramic rolling bearing, adopt dry gas lubrication through trachea (19) simultaneously; Between 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.