CN201096099Y - High performance magnetic force pump - Google Patents

Abstract

The utility model relates to a high performance magnetic pump which comprises a pump body (1), a pump cover (11), a pump shaft (12), an impeller (13), a linkage frame (14), an internal magnetic rotor (15), an external magnetic rotor (16), a distance sleeve (17), a driving shaft (18) and a bearing box (19) for a driving shaft, wherein, the pump body (1) and the pump cover (11) are mutually fixed and connected with a front pump cover (2) and a seal box (3); a double mechanical seal device (31) is arranged between the seal box (3) and the pump shaft (12); an input pressure surge drum (32a) and an output pressure surge drum (32b) are arranged in the inner cavity (A) of the seal box (3); the input pressure surge drum (32a) and the output pressure surge drum (32b) can prevent the working substances of the pump cavity from seeping to harm the bearings of the pump shaft and the rotors; the overheated damage owing to vacuation of the pump can not be caused; thus the pump shaft does not bear the pressure difference function; the running conditions and the leak tightness are good; the service life is long; the use is safe and reliable, and the high performance magnetic pump can fully meet various working conditions such as high-pressure, poisonous, inflammable and explosive medium, etc. to use.

Description

High performance magnetic pump

Technical field

The utility model relates to 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.

The model utility content

The purpose of this utility model provides a kind of good airproof performance, and is functional good, long service life, safe and reliable magnetic force magnetic.

The utility model 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 the utility model sealing case 3 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 the utility model pump chamber C 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.

The utility model good airproof performance, 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 the utility model example structure schematic representation.

Fig. 2 is another example structure schematic representation of the utility model.

Embodiment

Shown in accompanying drawing 1, the utility model 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 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, 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 (3)

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), 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 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 cooling chamber chuck (30) and 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 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), pump cover (11) cooling liquid manhole appendix (51,52) communicates with heat radiation chamber (50).

Images