CN201401342Y - High-high pressure area reflux cooling magnetic pump - Google Patents

Abstract

The utility model relates to a high-high pressure area reflux cooling 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 and a driving axle bearing box. The cooling medium in the cavity of the rotor is introduced and refluxed from the high pressure are of the pump cavity. The flow ofthe 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 isolating sleeve, thus prolonging the service life of the pump.

Description

The cooling magnetic drive pump refluxes in height-zone of high pressure

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.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 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.

Summary of the invention

The objective of the invention is to improve at the shortcoming deficiency of above-mentioned prior art, provide a kind of rational in infrastructure, cooling property is good, and the cooling magnetic drive pump refluxes in a safe and reliable high zone of high pressure.

The present invention 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: 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 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 16 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 again, 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.

The utility model is rational in infrastructure, adaptive capacity is strong, be applicable to low, high pressure operating mode use, cooling medium circulates unobstructed, can not produce gasification to pump chamber, pump vacuumizes and cavitation, and 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, Jie does not produce cavitation to separation sleeve, can not cause the perforation of separation sleeve cavitation to damage the working life of having improved pump.

Description of drawings

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

Embodiment

The utility model includes the pump housing 1, pump cover 11, pump shaft 12, hour wheel 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 22,22 ', 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 through flowing out, receded disk impeller 3 effects on pump shaft 12 axle heads flow to magnet rotor chamber B in the separation sleeve 17, fluid dielectric coolant is by portalling 22 on the pump cover 11,22 ' is back to pump chamber inner high voltage district, 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.

On pump impeller 13, offer return port 13 ' and be for the cooling medium that guarantees to flow through left side sliding bearing 31 backflow that can communicate with low pressure area, to communicate with the pump chamber low pressure area, side needn't be offered return port 13 ' specially on pump impeller 13 as pump structure upper left side sliding bearing 31.

Claims (1)

1, height-zone of high pressure backflow cooling 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 by its link press span (19 ') with pump cover (11), it is characterized in that: 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 interior magnet rotor (15) outboard end or pump shaft (12) axle head, 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), flow out from pump shaft (12) rear end by the MEDIA FLOW through hole of offering on the pump shaft (12) (21), act on through receded disk impeller (3), 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.

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