CN100494693C

CN100494693C - High performance magnetic pump

Info

Publication number: CN100494693C
Application number: CNB2007100119294A
Authority: CN
Inventors: 马伟利; 王慧; 于华宇; 李岩
Original assignee: Dandong Kelong Group Co Ltd
Current assignee: Dandong Kelong Group Co Ltd
Priority date: 2007-06-27
Filing date: 2007-06-27
Publication date: 2009-06-03
Anticipated expiration: 2027-06-27
Also published as: CN101089401A

Abstract

The present invention relates to a high-performance magnetic drive pump. Said high-performance magnetic drive pump includes the following several portions: pump body, pump cover, pump shaft, blade wheel, coupling frame, internal magnetic rotor, external magnetic rotor, isolation sleeve, drive shaft and drive shaft bearing. Said invention also provides its working principle and concrete method.

Description

High performance magnetic pump

Technical field

What the present invention relates to is magnetic drive pump.

Background technique

Magnetic drive pump is a kind of the cooperation with interior magnet rotor by magnetic force by outer magnet rotor to drive interior magnet rotor rotation, and interior magnet rotor drives pump shaft and rotates, and makes a kind of pump of the vane rotor rotation work on the pump shaft in the pump housing.Magnetic drive pump interior magnet rotor and outside be provided with separation sleeve between magnet rotor and form Seal cage, main shaft and interior magnet rotor are enclosed in the Seal cage, its effect one is can prevent by the pump spindle end to outside seepage, the 2nd, main shaft and interior magnet rotor portion are cooled off, the rotor internal cavity that separation sleeve forms communicates with pump chamber, utilize the medium in pump chamber inner high voltage district to flow into, rotor internal cavity is cooled off, device in the Seal cage that separation sleeve forms all soaks fully and is in the medium that is transferred, the corrosivity of medium and the impurity such as sand rock in the medium is erosion property and injury rotor internal cavity device directly, particularly cause the damage of bearings of main shaft easily, increase maintenance, influence is produced and proper functioning.Once the generation conveying is found time, rotor internal cavity can not get the cooling of medium in addition, and it is overheated that the magnetic force rotor produces, with burning apparatus; High pressure, poisonous, inflammable, explosive medium enter in the distance sleeve inner chamber, and be also dangerous, and particularly once separation sleeve damages, high pressure, poisonous, inflammable, explosive medium will be easy to seepage or leak into outside the pump.

Summary of the invention

The purpose of this invention is to provide a kind of good airproof performance, functional good, long service life, safe and reliable magnetic force magnetic.

The present invention includes the pump housing 1, pump cover 11, pump shaft 12, impeller 13, hitch 14, interior magnet rotor 15, outer magnet rotor 16, separation sleeve 17, live axle 18, driving shaft bearing case 19, pump shaft 12 is rotatably assorted to install by bearing means 20 with pump cover 11 and is connected, hitch 14 is fixedlyed connected with pump cover 11, driving shaft bearing case 19 docks fixedly connected with hitch 14, interior magnet rotor 15 is fixedly mounted on pump shaft 12 axle heads, outer magnet rotor 16 is fixedly mounted on live axle 18 axle heads, interior magnet rotor 15 and outside 16 of magnet rotors separation sleeve 17 is set, separation sleeve 17 is sealedly and fixedly connected with pump cover 11, its technical characteristics is, be sealedly and fixedly connected mutually at the pump housing 1 and 11 of pump covers and be provided with front pump cover 2 and sealing case 3, be provided with double end-face mechanical sealing device 31 at sealing

case

3 and 12 of pump shafts, sealing case 3 structures are formed with inner chamber A, in the inner chamber A of sealing case 3, be provided with incoming pressure surge drum 32a and delivery pressure surge drum 32b,

pressure balance cylinder

32a, 32b is by cylindrical shell 321, the piston 322 and the piston support spring 323 that are slidingly matched with ring in the cylindrical shell constitute, incoming pressure surge drum 32a and delivery pressure surge drum 32b are sealedly and fixedly connected with antetheca and the rear wall of sealing case 3 inner chamber A respectively, at input and output pressure balance cylinder 32a, offer through hole 33a respectively on the front end and back end of 32b and sealing case 3 walls, 34a, 33b, 34b, on sealing case 3 body walls, offer the liquid filling hole 35 and the outage 36 that communicate with its inner chamber A, on pump cover 11, offer the cooling liquid manhole appendix 51 that communicates with the inner chamber B of 17 formation of sealing case 3 and separation sleeve, 52.

5 double end-face mechanical sealing devices that are provided with 31 of sealing case 3 of the present invention and pump shaft can effectively prevent pump chamber working medium infiltrate, the front end counterface mechanical seal (one-level mechanical seal) of double end-face mechanical sealing device 31 stops the working medium of being come by front pump cover 2 infiltrations by pump chamber C to pass through backward, work is minded to enter in the inner chamber B of

sealing case

3 and 17 formation of separation sleeve, the corrosivity of medium and the impurity such as sand rock in the medium can not erosion property and injury rotor internal cavity device, can not cause pump shaft bearing and rotor to damage, even the front end counterface mechanical seal (one-level mechanical seal) of double end-face mechanical sealing device 31 was lost efficacy, the rear end counterface mechanical seal (secondary mechanical seal) of double end-face mechanical sealing device 31 still can stop working medium to pass through backward.Double end-face mechanical sealing device 31 and input output

pressure balance cylinder

32a, 32b will cut off in the inner chamber B of working medium, sealing case 3 inner chamber A,

sealing case

3 and 17 formation of separation sleeve mutually, can inject different liquid respectively as the case may be among inner chamber A and the inner chamber B, make the rear end counterface mechanical seal of double end-face mechanical sealing device 31 and pump shaft 12 plain bearing arrangement 20 and in magnet rotor 15 in suitable liquid, work respectively.Rotor internal cavity independently cools off, and can not make the impaired or burning apparatus of device because of pump depletion causes that rotor internal cavity loses cooling and produces overheatedly.

The hydraulic pressure of pump chamber C of the present invention is entered in the incoming pressure surge drum 32a in the sealing case 3 by the through hole 33a on sealing case 3 front panels and acts on piston 322, piston 322 is delivered to this pressure etc. among the sealing case 3 inner chamber A big or smallly, export by delivery pressure surge drum 32b and by the through hole 34b on sealing case 3 rear sidewalls again, be delivered in the inner chamber B of

sealing case

3 and 17 formation of separation sleeve etc. big or smallly, make the pressure at pump shaft 12 two ends equate like this, make not pressure difference effect of pump shaft, do not produce axial force, therefore make the installation and design of pump shaft simple and reliable, operating condition is good, not influenced by pump pressure, fully satisfy high-pressure service pump.

Good airproof performance of the present invention, long service life, safe and reliable, functional good, adaptive capacity is strong, can adapt to various working pressures, fully satisfies various operating modes such as high pressure, poisonous, inflammable, explosive medium and uses.

Description of drawings

Fig. 1 is an embodiment of the invention structural representation.

Fig. 2 is another embodiment of the present invention structural representation.

Embodiment

Shown in accompanying drawing 1, the present invention includes the pump housing 1, pump cover 11, pump shaft 12, impeller 13, hitch 14, interior magnet rotor 15, outer magnet rotor 16, separation sleeve 17, live axle 18, driving shaft bearing case 19, pump shaft 12 is rotatably assorted to install by rolling bearing or sliding bearing 20 with pump cover 11 and is connected, hitch 14 is fixedlyed connected with pump cover 11, driving shaft bearing case 19 docks fixedly connected with hitch 14, interior magnet rotor 15 is fixedly mounted on pump shaft 12 axle heads, outer magnet rotor 16 is fixedly mounted on live axle 18 axle heads, interior magnet rotor 15 and outside 16 of magnet rotors separation sleeve 17 is set, separation sleeve 17 is sealedly and fixedly connected with pump cover 11, be sealedly and fixedly connected mutually at the pump housing 1 and 11 of pump covers and be provided with front pump cover 2 and sealing case 3, be provided with double end-face mechanical sealing device 31 at sealing

case

pressure balance cylinder

32a, 32b is by cylindrical shell 321, the piston 322 and the piston support spring 323 that are slidingly matched with ring in the cylindrical shell constitute, incoming pressure surge drum 32a and delivery pressure surge drum 32b are sealedly and fixedly connected with antetheca and the rear wall of sealing case 3 inner chamber A respectively, on the front end and back end of incoming pressure surge drum 32a and delivery pressure surge drum 32b and sealing case 3 walls, offer turnover through hole 33a respectively, 34a, 33b, 34b, on sealing case 3 body walls, offer the liquid filling hole 35 and the outage 36 that communicate with its inner chamber A, on pump cover 11, offer the cooling liquid manhole appendix 51 that communicates with the inner chamber B of

sealing case

3 and 17 formation of separation sleeve, 52, on pump shaft 12 axle heads, be installed with liquid circulation receded disk impeller 21, shown in accompanying drawing 1 embodiment, offering conduction hole 22 on pump shaft 12, can certainly be to offer conduction hole 22 ' on interior magnet rotor 15; Be the operating ambient temperature of reduction double end-face mechanical sealing device 31, and the heat that its pivoting friction produces is dispelled the heat, guarantee mechanical seal device 31 safe and stable operation, on sealing case 3, offer cooling chamber chuck 30 and cooling

liquid manhole appendix

37,38.

Shown in accompanying drawing 2 embodiments, cool off for further improving internal magnet rotor 15 inner chambers, frictional heat, the frictional heat of interior magnet rotor 15 generations and the eddy current heat that separation sleeve 17 produces that sliding bearing 20 produces are fully dispelled the heat, on pump cover 11, offer cooling chamber chuck 40 and cooling

liquid manhole appendix

41,42, corresponding cooling chamber chuck 40 offers heat exchange heat radiation chamber 50 on pump cover 11, the inner chamber B cooling

liquid manhole appendix

51,52 that pump cover 11 is offered communicates with heat radiation chamber 50.This is provided with and uses flexibly in addition, can according to circumstances select cooling

liquid manhole appendix

41,42 or cooling

liquid

51,52 whether to connect external sink and which type of external sink.

Claims

1, high performance magnetic pump, include the pump housing (1), pump cover (11), pump shaft (12), impeller (13), hitch (14), interior magnet rotor (15), outer magnet rotor (16), separation sleeve (17), live axle (18), driving shaft bearing case (19), pump shaft (12) is rotatably assorted to install by rolling bearing or sliding bearing (20) with pump cover (11) and is connected, hitch (14) is fixedlyed connected with pump cover (11), driving shaft bearing case (19) docks fixedly connected with hitch (14), interior magnet rotor (15) is fixedly mounted on pump shaft (12) axle head, outer magnet rotor (16) is fixedly mounted on live axle (18) axle head, interior magnet rotor (15) and outside separation sleeve (17) is set between magnet rotor (16), separation sleeve (17) is sealedly and fixedly connected with pump cover (11), it is characterized in that: being sealedly and fixedly connected mutually between the pump housing (1) and pump cover (11) is provided with front pump cover (2) and sealing case (3), between sealing case (3) and pump shaft (12), be provided with double end-face mechanical sealing device (31), sealing case (3) structure is formed with inner chamber (A), in the inner chamber (A) of sealing case (3), be provided with incoming pressure surge drum (32a) and delivery pressure surge drum (32b), input and output pressure balance cylinder (32a, 32b) by cylindrical shell (321), the piston (322) and the piston support spring (323) that are slidingly matched with ring in the cylindrical shell constitute, incoming pressure surge drum (32a) and delivery pressure surge drum (32b) are sealedly and fixedly connected with the antetheca and the rear wall of sealing case (3) inner chamber (A) respectively, on the front end and back end of incoming pressure surge drum (32a) and delivery pressure surge drum (32b) and sealing case (3) wall, offer turnover through hole (33a respectively, 34a, 33b, 34b), on sealing case (3) body wall, offer the liquid filling hole (35) and the outage (36) that communicate with its inner chamber (A), offer on the pump cover (11) with sealing case (3) and separation sleeve (17) between the first cooling liquid manhole appendix (51 that communicates of the inner chamber (B) that forms, 52), on pump shaft (12) axle head, be installed with receded disk impeller (21), offering conduction hole (22) on the pump shaft (12) or on interior magnet rotor (15), offering conduction hole (22 ').

2, high performance magnetic pump according to claim 1 is characterized in that: offer the first cooling chamber chuck (30) and the second cooling liquid manhole appendix (37,38) on sealing case (3).

3, high performance magnetic pump according to claim 1 and 2, it is characterized in that: on pump cover (11), offer the second cooling chamber chuck (40) and the 3rd cooling liquid manhole appendix (41,42), the corresponding second cooling chamber chuck (40) offers heat exchange heat radiation chamber (50) on pump cover (11), the first cooling liquid manhole appendix (51,52) of pump cover (11) communicates with heat radiation chamber (50).