CN2526548Y

CN2526548Y - Magnetic pump

Info

Publication number: CN2526548Y
Application number: CN 01251389
Authority: CN
Inventors: 臧克; 臧戈飞
Original assignee: Kelong Group Co ltd Dandong Bo
Current assignee: Kelong Group Co ltd Dandong Bo
Priority date: 2001-11-09
Filing date: 2001-11-09
Publication date: 2002-12-18
Anticipated expiration: 2011-11-09

Abstract

The utility model relates to a magnetic pump which comprises a pump body 1, a pump cover 2, a pump shaft 3, a connecting frame 4, an internal magnetic rotor 5, an external magnetic rotor 6, a driving shaft 7, a bearing frame 70, and an isolation sleeve 9; the utility model is characterized in that the isolation sleeve 9 is a dual-layer hollow isolation sleeve; the dual-layer isolation layer 9 is provided with an inlet cooling liquid pipe 93 and an outlet cooling liquid pipe 94 for cooling; the pump cover 2 is provided with a liquid storage tank 27; the pump cover body is provided with through holes 21, 23 and 25; the end wall of the internal magnetic rotor is provided with a circulated cooling gateway formed by a through hole 50 to carry out the self cooling. The utility model has the advantages of dense structure, good cooling effect and long service life, and is suitable for mediums with grains, large viscidity and easy gasification and application without being afraid of pump emptying, and fully without medium leakage.

Description

Magnetic drive pump

Affiliated technical field

The utility model relates to magnetic drive pump, is the improvement to magnetic drive pump.

Magnetic drive pump is a kind of pump that magnetic shaft coupling and pump organically combine.The moment of torsion that the outer magnet rotor of magnetic drive pump imports into by the external world rotates, and magnet rotor rotates synchronously in driving by the magnetic field interaction between inside and outside magnet rotor, and interior magnet rotor drives pump shaft, and pump shaft drives the work done of rotor rotation convection cell.

Background technique

The magnetic drive pump of prior art, for to being connected with pump cover and being arranged on that the metal separation sleeve cools off between inside and outside magnetic force rotor, on pump cover, offer cooling infusion hole with pump chamber and separation sleeve intracavity inter-connection near the zone of high pressure of vane rotor external diameter or delivery side of pump zone of high pressure, the medium in pump inner high voltage district is introduced in the separation sleeve inner chamber, separation sleeve is cooled off, and medium returns the pump chamber low pressure area by pump shaft portion then.This structure only is applicable to no particle, no silt particle, and viscosity is little, is difficult for the medium of gasification, and does not have under the situation of finding time during pump work and use.Otherwise because the gap between interior magnet rotor and the separation sleeve is less, the particle that contains in the medium, silt particle will be blocked in the gap, magnet rotor in the wearing and tearing, and the liquid stream that makes cooling liquid reduces or stops to flow, and the temperature of separation sleeve is raise rapidly, and makes the magnetic force rotor fails.The cool cycles speed that flows reduced when dielectric viscosity was big, and cooling effect descends, and the temperature of separation sleeve is raise, and make the magnetic force rotor fails.If medium easily gasifies, then when medium inflow magnetic force rotor separation sleeve inner chamber cools off,, medium temperature gasifies owing to raising, can cause finding time of pump.If the pump medium is found time, there is not cooling liquid to cool off in the magnetic force rotor separation sleeve inner chamber, the temperature of separation sleeve can raise rapidly, and makes the magnetic force rotor fails.

For adaptation has particle, silt particle, viscosity is big, easy gasifying medium and be not afraid of pump depletion and use, prior art is cooled off the another kind of mode that is adopted to separation sleeve, between pump shaft and pump cover, be provided with seal arrangement----mechanical seal device, pump chamber and separation sleeve inner chamber are cut off, make the medium in the pump chamber can not enter into the separation sleeve inner chamber, on pump cover, communicate and offer the cooling liquid manhole appendix, introduce extraneous cooling liquid and cool off with the separation sleeve inner chamber.Though this structure has been applicable to particle, silt particle, viscosity is big, easy gasifying medium and be not afraid of pump depletion and use, but the medium in the pump chamber still can be by the seal arrangement between pump shaft and pump cover to magnetic force rotor separation sleeve inner chamber seepage, and together be excreted to the outer occurring in nature of pump with cooling liquid, so this magnetic drive pump is still a kind of pump that leakage is arranged, only the leakage of the medium that is transferred in the pump chamber is to discharge with cooling liquid, this and pump directly leak the difference that there is no in essence, when being transferred medium and being toxic substance, then cause environmental pollution and personal injury.

Summary of the invention

The utility model improves at the shortcoming deficiency of prior art, provides a kind of simple in structure, good cooling results, and long service life does not have the magnetic drive pump of dielectric leakage fully.

The utility model includes the pump housing, pump cover, pump shaft, link press span, inside and outside magnet rotor, outer magnet rotor live axle, driving shaft bearing frame, inside and outside magnet rotor separation sleeve, is arranged on the seal arrangement between pump cover and pump shaft----mechanical seal device, it is characterized in that separation sleeve 9 is double-deck hollow separation sleeve, offer

turnover coolant pipe

93,94 on this bilayer hollow separation sleeve 9, the input cooling water cools off separation sleeve 9.In addition, top outside pump cover 2 is provided with liquid container 27, on pump cover 2, offer the through hole 21 that liquid container 27 is linked to each other with pump shaft mechanical seal device 30 rear portion axocoels 31, pump shaft bearing sleeve 22a at pump cover, offer through hole 23a respectively on last and interior magnet rotor 5 end walls of 22b, 23b, 50, offer the through hole 25 that separation sleeve 9 inner chambers 90 are linked to each other with liquid container 27 at pump cover 2, and can be connected with impeller inducer 51 in the setting of the end of interior magnet rotor 5, it forms the independent loops coolant path, utilize the thermal siphon phenomenon to carry out flowing automatically cooling, or carry out forced flow by impeller inducer 51, pump shaft bearing portion is carried out from cooling.

It is bolted the utility model and gathers, good cooling results, long service life, particle, silt particle have not been only applicable to, viscosity is big, easy gasifying medium and be not afraid of pump depletion and use, and because the incompressibility of liquid, the medium that is transferred in the pump chamber can not leak laterally by the mechanical seal device 31 of 3 of pump cover 2 and pump shafts, so there is not dielectric leakage fully.

Description of drawings

Accompanying drawing is the utility model example structure schematic representation.

Embodiment

The utility model includes the pump housing 1, pump cover 2, pump shaft 3, link press span 4, interior magnet rotor 5, outer magnet rotor 6, outer magnet rotor live axle 7, separation sleeve 9, live axle 7 bearing bracket stands 70, rotor 10 on the pump shaft 3 in the pump chamber is installed, pump shaft 3 cooperates installation with pump cover 2 by rolling bearing or plain bearing arrangement, be provided with mechanical seal device 30 at pump cover 2 and pump shaft 3, the pump housing 1 and pump cover 2, pump cover 2 and link press span 4, link press span 4 is fixedlyed connected with driving shaft bearing frame 70 mutual seam fitted bolts, live axle 7 is connected with its bearing bracket stand 70 by bearing means, magnet rotor 5 is fixedly mounted on pump shaft 3 axle heads in link press span 4, outer magnet rotor 6 is fixedly mounted on to drive to be changeed on 7 axle heads, interior magnet rotor 5 is Spielpassung with outer magnet rotor 6, at inside and outside magnet rotor 5,6 double-deck hollow separation sleeves 9 that setting is made of interior cover 91 and overcoat 92, on double-deck hollow separation sleeve 9, offer

turnover coolant pipe

93,94, separation sleeve 9 cooperates with pump cover 2 seams and is fastenedly connected.The internal layer cover 91 of double-deck hollow separation sleeve 9 is a metallic material, it can bear bigger pressure, when in a single day seal arrangement one-mechanical seal device 30 of guaranteeing 3 of pump cover 2 and pump shafts destroys, bear the pressure medium that leaks into pump cover 2 inner chambers, guarantee sealing to pump cover 2, do not make medium again to external leakage, the skin of double-deck hollow separation sleeve 9 cover 92 is nonmetallic material, can not produce the eddy current thermal loss.

The top of the utility model outside pump cover 2 is provided with liquid container 27, on pump cover 2, offer the through hole 21 that liquid container 27 is linked to each other with pump shaft mechanical seal device 30 rear portion axocoels 31, on pump shaft bearing sleeve 22a, the 22b of pump cover and on interior magnet rotor 5 end walls circumferentially, offer through

hole

23a, 23b, 50 respectively, offer the through hole 25 that separation sleeve 9 inner chambers 90 are linked to each other with liquid container 27 at pump cover 2, and be connected with impeller inducer 51 in the end of interior magnet rotor 5.It forms the coolant path that independently circulates, cooling liquid in the liquid container 27 is flowed in the

axocoel

31,32 at mechanical seal device 30 rear portions in the pump cover 2 by the through hole on the pump cover 2 21, in through hole on interior magnet rotor 5 end walls 50 flows into again in magnet rotor 5 inner chambers 53, cooling liquid in interior magnet rotor 5 inner chambers 53 is discharged in separation sleeve 9 inner chambers 90 through impeller 51, flow in the liquid container 27 by the through hole on the pump cover 2 25 again, bearing portion is carried out from cooling.

Claims

1, magnetic drive pump includes the pump housing 1, pump cover 2, pump shaft 3, link press span 4, interior magnet rotor 5, outer magnet rotor 6, outer magnet rotor live axle 7, separation sleeve 9, live axle 7 bearing bracket stands 70, rotor 10 on the pump shaft 3 in the pump chamber is installed, pump shaft 3 cooperates installation with pump cover 2 by rolling bearing or plain bearing arrangement, be provided with mechanical seal device 30 at pump cover 2 and pump shaft 3, the pump housing 1 and pump cover 2, pump cover 2 and link press span 4, link press span 4 is fixedlyed connected with driving shaft bearing frame 70 mutual seam fitted bolts, live axle 7 is connected with its bearing bracket stand 70 by bearing means, magnet rotor 5 is fixedly mounted on pump shaft 3 axle heads in link press span 4, outer magnet rotor 6 is fixedly mounted on to drive to be changeed on 7 axle heads, it is characterized in that separation sleeve 9 is double-deck hollow separation sleeve, on double-deck hollow separation sleeve 9, offer turnover coolant pipe 93,94, separation sleeve 9 cooperates with pump cover 2 seams and is fastenedly connected.

2, according to wanting the described magnetic drive pump of claim 1, it is characterized in that the internal layer cover 91 of double-deck hollow separation sleeve 9 is metallic material, outer cover 92 is nonmetallic material.

3, according to wanting claim 1 or 2 described magnetic drive pumps, it is characterized in that the top outside pump cover 2 is provided with liquid container 27, on pump cover 2, offer the through hole 21 that liquid container 27 is linked to each other with pump shaft mechanical seal device 30 rear portion axocoels 31, on pump shaft bearing sleeve 22a, the 22b of pump cover and on interior magnet rotor 5 end walls circumferentially, offer through hole 23a, 23b, 50 respectively, offer the through hole 25 that separation sleeve 9 inner chambers 90 are linked to each other with liquid container 27 at pump cover 2, and be connected with impeller inducer 51 in the end of interior magnet rotor 5.