CN201401343Y

CN201401343Y - Magnetic pump

Info

Publication number: CN201401343Y
Application number: CN2009200136985U
Authority: CN
Inventors: 于华宇; 萧建邦; 靖永毅; 杨德乾; 栾晓颖; 柴鹏举
Original assignee: Dandong Kelong Group Co Ltd
Current assignee: Dandong Colossus Group Co Ltd; Dandong Kelong Group Co Ltd
Priority date: 2009-05-13
Filing date: 2009-05-13
Publication date: 2010-02-10
Anticipated expiration: 2019-05-13

Abstract

The utility model relates to a magnetic pump, comprising a pump body, a pump cover, a pump shaft, an impeller, an inner magnetic rotor, an outer magnetic rotor, an isolating sleeve, a driving axle anda driving axle bearing box. The cooling medium in the cavity of the rotor is introduced and refluxed from the high pressure area of the pump cavity. The flow of the medium is smooth which can not produce gasification or vacuum state in the pump cavity. The particles of sand grain and the like in the medium can not gather round the bottom of the isolating sleeve to wear the bottom of the isolatingsleeve. A pressure balancing chamber (D) is arranged between the back side of the impeller (13) and the pump cover; the self balancing impeller (13) piles the pressure on the pump shaft (12) along axial direction, so that the pump shaft (12) is ensured to bear the minimum axial direction applied force. A corrugated buffer sleeve having the elastic protection purpose is arranged on a sliding bearing and a sliding bearing sleeve. The magnetic pump improves the pump performance, is safe to use, and has long service life.

Description

Magnetic drive 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.Prior art is that the zone of high pressure in the pump chamber is communicated with the separation sleeve inner chamber, medium in the separation sleeve is main to be back to pump chamber center low voltage section through offer through hole in the heart in the pump shaft axle head, the hole of part medium on sliding bearing is back to the low pressure area of pump chamber central part simultaneously, utilize the medium in pump chamber inner high voltage district to flow into, eddy current heat and sliding bearing that the rotor internal cavity separation sleeve is produced cool off, its shortcoming is that the return port that the medium after separation sleeve is heated is offered by pump shaft axle head center hole is back to pump chamber inlet low pressure area, cause the medium gasification easily, pump vacuumizes and cavitation, influence the pump proper functioning, find time in case take place to carry, rotor internal cavity can not get the cooling of medium, it is overheated that the magnetic force rotor produces, with burning apparatus; In addition, because the cooling medium in the separation sleeve is to be refluxed by the axle center hole, the magnet rotor action of centrifugal force could flow to the supercentral return port of pump shaft in the backflow of medium need be resisted, do not meet flowing law, not smooth so reflux, particulate matters such as sand grains in face and the cooling medium are subjected to interior magnet rotor centrifugal action, more difficultly flow into, but accumulate in the bottom periphery of separation sleeve, the separation sleeve bottom is produced wearing and tearing to the pump shaft center, cause and rinse leakage, medium is producing cavitation near the pump shaft place to separation sleeve simultaneously, can cause the perforation of separation sleeve cavitation, causes separation sleeve to damage easily, increase maintenance, influence is produced and proper functioning.In addition, the pressure difference of in pump chamber, bearing owing to the impeller left and right sides, so the axial pressure of impeller action on pump shaft is bigger, the axial force balance of pump shaft is bad, it is big that pump shaft bears axial force, particularly when start, also can produce compression shock, cause the wearing and tearing of pump shaft sliding bearing and thrust button sliding bearing easily.

The model utility content

The purpose of this utility model is to improve at the shortcoming deficiency of above-mentioned prior art, provides a kind of rational in infrastructure, and cooling property is good, and the pump shaft axial force balance is good, and is functional good, long service life, safe and reliable magnetic drive pump.

The utility model includes the pump housing 1, pump cover 11, pump shaft 12, impeller 13, interior magnet rotor 15, outer magnet rotor 16, separation sleeve 17, live axle 18, driving shaft bearing case 19, pump shaft 12 is by sliding bearing 31,32 with pump cover on bearing sleeve 14 installation that is rotatably assorted, 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, driving shaft bearing case 19 docks fixedly connected by its link press span 19 ' with pump cover 11, one of its feature is: offer fluid dielectric coolant and enter hole 20 between zone of high pressure on the pump cover 11 and bearing sleeve 14 inner chamber A, on pump shaft 12, offer MEDIA FLOW through hole 21, offer fluid dielectric coolant between the B of magnet rotor chamber in zone of high pressure on pump cover 11 and bearing sleeve 14 outer shrouds and portal 22, on interior magnet rotor 15 outside pump shafts 12 axle heads, be fixed with receded disk impeller 3, on pump impeller 13, offer return port 13 ', the medium in pump chamber inner high voltage district enters hole 20 by the fluid dielectric coolant on the pump cover 11 and enters among the bearing sleeve 14 inner chamber A, flow out from pump shaft 12 rear ends through receded disk impeller 3 effects by the MEDIA FLOW through hole of offering on the pump shaft 12 21, the gap of interior magnet rotor 15 of medium process and separation sleeve 17 flows to the interior magnet rotor chamber B in the separation sleeve 17,22 be back to pump chamber inner high voltage district by portalling on the pump cover 11, finish the eddy current heat that rotor internal cavity B separation sleeve is produced and cool off; Meanwhile, entering the slotted eye of the cold liquid medium of part on the bearing 31,32 that horizontally slips among the bearing sleeve 14 inner chamber A flows through sliding bearing 31,32 is cooled off;

Two of feature of the present utility model is: be provided with the supporting disk 4 that cooperates with impeller 13 in pump cover 11 front sides, choma 41 and interior choma 48 outside impeller 13 rear sides are provided with, the fixedly connected outer ring surface that is provided with choma 41 outside friction ring 43 and the impeller 13 is slidingly matched on seam groove 40 inner ring surfaces 42 on supporting disk 4, outside impeller 13, offer radial direction through hole groove a ' on the outer ring surface of choma 41 or friction ring 43 inner ring surfaces, or the friction ring on the supporting disk 4 43 cooperates with impeller 13 outer choma 41 outer ring surface radial clearance a, interior choma 48 front-end faces 48 ' of impeller 13 rear sides cooperate with perpendicular end face axial gap c on the supporting disk 4, make impeller 13 rear sides in, outer choma 48,41 inner chambers form pressure balance chamber D, during pump work, the pressure in impeller 13 left sides is bigger, impeller 13 produces to the right and moves, the front-end face of interior choma 48 of impeller 13 and the perpendicular end face axial gap c on the supporting disk 4 are diminished, pressure balance chamber D is reduced and being communicated with of pump chamber low pressure area, (or radial clearance a) communicates with the pump chamber zone of high pressure radial direction through hole groove a ' of pressure balance chamber D by impeller 13 outer choma 41 outer ring surfaces, pressure balance chamber D internal pressure is raise, to impeller 13 enforcement pressure effects to the left, the pressure that impeller 13 left and right side are subjected to tends to balance, thereby reduces the axial force that 13 pairs of pump shafts of impeller 12 produce;

Three of feature of the present utility model is: be provided with ripple cushion collar 31b, 32b between sliding bearing 31,32 and its bearing support 31a, 32a; Be provided with ripple cushion collar 33b, 34b at sliding shaft sleeve 33,34 and 12 of pump shafts, the elasticity of the slow cover of its ripple can effectively prevent to cause because of the thermal expansion that the plain bearing arrangement temperature causes when too high the damage of sliding bearing and sliding shaft sleeve; Be provided with buffering spacer 33c, 34c at sliding shaft sleeve two ends, 33,34 left and right sides and its axially locating inner room, play certain buffer protection function when sliding shaft sleeve 33,34 is subjected to axial impact force;

Four of feature of the present utility model is: be provided with thrust button sliding bearing 35 and thrust button plain bearing housing 36 between sliding bearing 32 and interior magnet rotor 15 wheel hubs, thrust button plain bearing housing 36 is the seam disc type, thrust button sliding bearing 35 is connected with thrust button plain bearing housing 36 seams, thrust button sliding bearing 35 cooperates with sliding bearing 32 end faces, on the interior ring fitting surface of thrust button sliding bearing 35 and thrust button plain bearing housing 36, be provided with ripple cushion collar 36b, on the perpendicular end face of the stopping table that thrust button plain bearing housing 36 cooperates with thrust button sliding bearing 35, be provided with buffering spacer 36c, this thrust button plain bearing arrangement promptly plays the axial thrust positioning action, can effectively prevent thrust button sliding bearing 35 eccentric wears again, increase the service life.

The utility model is rational in infrastructure; cooling medium circulates unobstructed; can not produce gasification to pump chamber; pump vacuumizes and cavitation; particulate matters such as the sand grains in the medium do not produce the bottom periphery that accumulates in separation sleeve; the separation sleeve bottom is produced wearing and tearing; 4 of supporting disks on impeller 13 rear sides and the pump cover are provided with the axial force of 13 pairs of pump shafts 12 of pressure balance chamber D autobalance impeller of formation; make pump shaft 12 bear minimum axial force; make plain bearing arrangement; particularly the thrust button sliding bearing is stressed little; put at sliding bearing and sliding bearing and to be provided with the ripple cushion collar and to play resilient protection, pump performance is improved, safe in utilization.

The utility model is functional good, and adaptive capacity is strong, is applicable to low, high pressure operating mode use, the working life of having improved pump.

Description of drawings

Fig. 1 is the utility model example structure schematic representation.

Fig. 2 is the pressure balance chamber D bilge construction enlarged view of Fig. 1.

Fig. 3 is sliding bearing 32 and the thrust button sliding bearing 35 bilge construction enlarged views of Fig. 1.

Fig. 4 is ripple cushion collar 31b, 32b, 33b, 34b, 36b cutaway view Amplified image.

Embodiment

The utility model includes the pump housing 1, pump cover 11, pump shaft 12, impeller 13, interior magnet rotor 15, outer magnet rotor 16, separation sleeve 17, live axle 18, driving shaft bearing case 19, pump shaft 12 is by sliding bearing 31,32 with pump cover on bearing sleeve 14 installation that is rotatably assorted, 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, driving shaft bearing case 19 docks fixedly connected by its link press span 19 ' with pump cover 11, it is characterized in that, two sliding bearings 31 about ring in zone of high pressure on pump cover 11 and the bearing sleeve on the pump cover 14, offer fluid dielectric coolant between 32 inner chamber A and enter hole 20, offer the MEDIA FLOW through hole 21 that leads to shaft rear end on the pump shaft 12 in inner chamber A, 21 ', interannular outside zone of high pressure on pump cover 11 and the bearing sleeve on the pump cover 14, promptly and offer fluid dielectric coolant between the interior magnet rotor chamber B in the separation sleeve 17 and portal 22, on interior magnet rotor 15 outside end faces or be fixed with receded disk impeller 3 on pump shaft 12 axle heads, on pump impeller 13, offer return port 13 ', the medium in pump chamber inner high voltage district enters hole 20 by the fluid dielectric coolant on the pump cover 11 and enters among the bearing sleeve 14 inner chamber A, by the MEDIA FLOW through hole of offering on the pump shaft 12 21,21 ' from pump shaft 12 rear ends the receded disk impeller on pump shaft 12 axle heads 3 effect flows to magnet rotor chamber B in the separation sleeve 17, fluid dielectric coolant 22 is back to pump chamber inner high voltage district by portalling on the pump cover 11, the cold liquid medium of part among the bearing sleeve 14 interior ring inner chamber A is through the bearing 31 that horizontally slips simultaneously, slotted eye on 32 flows through sliding bearing is cooled off, the cooling medium that flows through left side sliding bearing 31 flows into pump chamber by offering return port 13 ' on the pump impeller 13, flows through magnet rotor chamber B in the gap inflow of cooling medium interannular in bearing sleeve 14 outer shrouds and interior magnet rotor 15 of right side sliding bearing 32; Be provided with the supporting disk 4 that cooperates with impeller 13 in pump cover 11 front sides, supporting disk 4 is to fixedly connected with pump cover 11, or one connects, choma 41 and interior choma 48 outside impeller 13 rear sides are provided with, the fixedly connected outer ring surface that is provided with choma 41 outside friction ring 43 and the impeller 13 is slidingly matched on seam groove 40 inner ring surfaces 42 on supporting disk 4, outside impeller 13, offer radial direction through hole groove a ' on the outer ring surface of choma 41 or the supporting disk 4 on the inner ring surface 42 of seam groove 40, or the friction ring on the supporting disk 4 43 cooperates with impeller 13 outer choma 41 outer ring surface radial clearance a, shown in the accompanying drawing embodiment, the fixedly connected disk 45 that is provided with on the seam groove 40 on the supporting disk 4, the perpendicular end face 47 in the bottom of disk 45 cooperates with front-end face 48 ' the axial clearance c of choma 48 in the impeller 13, make in impeller 13 rear sides, outer choma 48,41 inner chambers form pressure balance chamber D, being provided with of disk 45 is beneficial to supporting disk 4 processing, the matching gap of convenient adjustment and impeller 13, during pump work, when the pressure in impeller 13 left sides is big, impeller 13 produces to the right and moves, the cooperating axial clearance c to diminish or seal of the perpendicular end face 47 in bottom that makes disk 45 and impeller 13 interior choma 48 front-end faces, pressure balance chamber D is reduced or being communicated with of sealing and pump chamber low pressure area, (or radial clearance a) communicates with the pump chamber zone of high pressure pressure balance chamber D by the radial direction through hole groove a ' on friction ring 43 and impeller 13 outer choma 41 outer ring surfaces, pressure balance chamber D internal pressure is raise, to impeller 13 enforcement pressure effects to the left, the pressure that impeller 13 left and right side are subjected to tends to balance, thereby reduces the axial force that 13 pairs of pump shafts of impeller 12 produce; On the bearing support 31a of sliding bearing 31,32,32a inner ring surface, offer groove, in this groove, be provided with ripple cushion collar 31b, 32b, with pump shaft 12 that sliding shaft sleeve 33,34 cooperates on offer groove, in this groove, be provided with ripple cushion collar 33b, 34b, prevent to cause the damage of sliding bearing and sliding shaft sleeve because of the too high expansion extruding of sliding bearing temperature; Be provided with buffering spacer 33c, 34c at sliding shaft sleeve two ends, 33,34 left and right sides and axially locating inner room, play certain buffer protection function when sliding shaft sleeve 33,34 is subjected to axial impact force;

Between sliding bearing 32 and interior magnet rotor 15 wheel hubs, be provided with thrust button sliding bearing 35 and thrust button plain bearing housing 36, thrust button plain bearing housing 36 is the seam disc type, thrust button sliding bearing 35 is connected with thrust button plain bearing housing 36 seams, thrust button sliding bearing 35 cooperates with sliding bearing 32 end faces, is provided with ripple cushion collar 36b on the interior ring fitting surface of thrust button sliding bearing 35 and thrust button plain bearing housing 36; On the perpendicular end face of the stopping table that thrust button plain bearing housing 36 cooperates with thrust button sliding bearing 35, be provided with buffering spacer 36c, the thrust button plain bearing arrangement promptly plays the axial thrust positioning action, can effectively prevent thrust button sliding bearing 35 eccentric wears again, increase the service life.

Claims

1, magnetic drive pump includes the pump housing (1), pump cover (11), pump shaft (12), impeller (13), interior magnet rotor (15), outer magnet rotor (16), separation sleeve (17), live axle (18), driving shaft bearing case (19), pump shaft (12) is by sliding bearing (31,32) with pump cover on bearing sleeve (14) installation that is rotatably assorted, 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), driving shaft bearing case (19) docks fixedly connected with pump cover (11) by its link press span (19 '), it is characterized in that:

A, between zone of high pressure on the pump cover (11) and bearing sleeve (14) inner chamber A, offer fluid dielectric coolant and enter hole (20), on pump shaft (12), offer MEDIA FLOW through hole (21), offer fluid dielectric coolant portal (22) in zone of high pressure on pump cover (11) and bearing sleeve (14) outer shroud between magnet rotor chamber (B), on pump shaft (12) axle head of interior magnet rotor (15) outside, be fixed with receded disk impeller (3), on pump impeller (13), offer return port (13 '), the medium in pump chamber inner high voltage district enters hole (20) by the fluid dielectric coolant on the pump cover (11) and enters in bearing sleeve (14) inner chamber (A), act on through receded disk impeller (3) from pump shaft (12) rear end by the MEDIA FLOW through hole of offering on the pump shaft (12) (21), gap through interior magnet rotor (16) and separation sleeve (17) flows to interior magnet rotor chamber (B), be back to pump chamber inner high voltage district by portal on the pump cover (11) (22), enter the cold liquid medium of part in bearing sleeve (14) inner chamber (A) through the bearing (31 that horizontally slips, 32) slotted eye on flows through sliding bearing (31,32) cool off;

B, be provided with the supporting disk (4) that cooperates with impeller (13) in pump cover (11) front side, choma (41) and interior choma (48) outside impeller (13) rear side is provided with, seam groove (40) inner ring surface (42) on supporting disk (4) is gone up the fixedly connected outer ring surface that is provided with choma (41) outside friction ring (43) and the impeller (13) and is slidingly matched, outside impeller (13), offer radial direction through hole groove a ' on the outer ring surface of choma (41) or friction ring (43) inner ring surface, or the friction ring (43) on the supporting disk (4) cooperates with the outer choma of impeller (13) (41) outer ring surface radial clearance (a), interior choma (48) front-end faces (48 ') of impeller (13) rear side cooperate with perpendicular end face axial gap (c) on the supporting disk (4), make impeller (13) rear side in, outer choma (48,41) inner chamber forms pressure balance chamber (D);

C, between sliding bearing (31,32) and its bearing support (31a, 32a), be provided with ripple cushion collar (31b, 32b); Between sliding shaft sleeve (33,34) and pump shaft (12), be provided with ripple cushion collar (33b, 34b); Be provided with buffering spacer (33c, 34c) at sliding shaft sleeve (33,34) two ends, the left and right sides and its axially locating inner room;

D, between sliding bearing (32) and interior magnet rotor (15) wheel hub, be provided with thrust button sliding bearing (35) and thrust button plain bearing housing (36), thrust button plain bearing housing (36) is the seam disc type, thrust button sliding bearing (35) is connected with thrust button sliding bearing (35) seam, thrust button sliding bearing (35) cooperates with sliding bearing (32) end face, is provided with ripple cushion collar (36b) on the interior ring fitting surface of thrust button sliding bearing (35) and thrust button plain bearing housing (36); On the perpendicular end face of the stopping table that thrust button plain bearing housing (36) cooperates with thrust button sliding bearing (35), be provided with buffering spacer (36c).

2, magnetic drive pump according to claim 1 is characterized in that: supporting disk (4) is to fixedly connected with pump cover (11), or one connects.

3, magnetic drive pump according to claim 1, it is characterized in that: the seam groove (40) on supporting disk (4) is gone up the fixedly connected disk (45) that is provided with, the perpendicular end face (47) in the bottom of disk (45) cooperates with front-end face (the 48 ') axial clearance (c) of the interior choma of impeller (13) (48), makes the inside and outside choma of impeller (13) rear side (48,41) inner chamber form pressure balance chamber (D).