CN2098756U

CN2098756U - Sealed permanent-magnet driving unit having large moment and low rotation rate

Info

Publication number: CN2098756U
Application number: CN 91213763
Authority: CN
Inventors: 曹正明
Original assignee: NANTONG PERMANENT-MAGNET APPLIED INST
Current assignee: NANTONG PERMANENT-MAGNET APPLIED INST
Priority date: 1991-05-22
Filing date: 1991-05-22
Publication date: 1992-03-11

Abstract

The utility model discloses a sealed permanent-magnet driving device having large moment and low rotation rate used for the seal and the agitation for a reaction still. The sealed permanent-magnet driving device having large moment and low rotation rate comprises a magnetic force transmission device which is composed of a driving magnetic disc inlaid with a permanent magnet magnetic loop and a driven magnetic disc. The driving magnetic disc and the driven magnetic disc are axially arranged and are respectively connected with a driving shaft and a driven shaft. A sealed partition plate is arranged between the driving magnetic disc and the driven magnetic disc. The magnetic discs, the shafts and the partition plate are arranged in a seal housing. The sealed partition plate adopts a clad steel plate. A self-circulation cooling structure is arranged between the sealed partition plate and the magnetic discs. The periphery of the driven shaft is provided with an outer circulation cooling structure and the middle part is provided with an airflow channel. The utility model has the advantages of compact structure, low cost and long service life. The carry-over moment is long.

Description

Sealed permanent-magnet driving unit having large moment and low rotation rate

The utility model relates to the device that is used to mix, specifically a kind of transmission device that has around the blender of a vertical axis rotation, a kind of transmission device of magnetic force mixer in other words conj.or perhaps.

The permanent magnetism transmission device is to be used for effective transmission device that the reactor sealing is stirred.There are many shortcomings in the coaxial type permanent magnetism transmission device that generally adopts at present, as Chinese patent application case 88205491.0; 88213308.X Deng in disclosed reactor magnetic drive device, though done many improvement on block bearing and lubricating system, but still can not break away from the inherent defect of coaxial type permanent magnetism transmission device, especially the magnet ring diameter is restricted, in order to obtain big moment, magnet ring must connect very longly, like this magnet use very many, magnet is a Rare-Earth Magnetic, the Unit Weight price is higher, the magnet consumption is many, and the transmission device price is also just high, thereby directly influences it and apply.

The purpose of this utility model provides a kind of few with magnet material, and can be used for the big moment slow-speed of revolution permanent-magnet sealing transmission device of the high-power sealed stirring of low speed.

Technical solution of the present utility model is: a kind of big moment slow-speed of revolution permanent-magnet sealing transmission device, its magnetic driver is made up of active disk that is inlaid with permanent magnetic ring and driven disk, initiatively disk and be not of the prior artly radially to be provided with but axially to be provided with from movable magnetic disc; Initiatively disk be connected with driven shaft with driving shaft respectively from movable magnetic disc; Disk and initiatively from the seal isolation plate is housed between movable magnetic disc; Initiatively disk, from movable magnetic disc, division board, and all be contained in the seal casinghousing with driving shaft that is connected from movable magnetic disc and driven shaft etc. with the active disk.

Between disk of the present utility model and seal isolation plate thrust bearing is housed.

Seal isolation plate in the utility model adopts clad steel plate.

Have self-loopa cooling structure between seal isolation plate in the utility model and active disk.

Have the outer circulation cooling structure around the driven shaft of the present utility model.

Cladding has sheet lead on the permanent magnetic ring in the utility model.

Have gas channel in the driven shaft in the utility model.

Self-loopa in the utility model cooling structure is by the groove on the active disk, seal isolation plate and the latasuture crack between middle slit, active magnetic plate edge and the housing between disk initiatively, initiatively the last slit between disk another side and housing and the drainback passage that runs through the active disk are formed; In slit, latasuture crack, go up the slit, and drainback passage constitute circulating oil path.

Have an outside to have the water collar of the one group of groove that communicates successively in the outer circulation cooling structure of the present utility model, water collar is embedded on the shell, and the water collar inboard is enclosed within on the driven shaft, and the water collar groove at two ends up and down is equipped with the water-in and water-out pipe joint respectively.

The utility model has the advantages that: because thrust bearing has been installed, be added to the huge gas pressure on the seal isolation plate, mainly bear, controlled the distortion of seal isolation plate, for advantage has been created in effective transmission of magnetic force by thrust bearing; Because the seal isolation plate has adopted clad steel plate, has both guaranteed the intensity and the corrosion stability of division board, has saved special stainless steel again; Owing to designed self-loopa cleverly cooling structure, make simple structure, the compactness of magnetic driver, and can effectively division board eddy current heat be dissipated, thereby guaranteed the magnetic property of magnet; Because adopted the outer circulation cooling structure of the embedded cooling jacket formation that need not weld, shell can adopt cast member, has both simplified technology, has reduced cost, has fully guaranteed cooling capacity again; Because magnet surface has cladded sheet lead, has guaranteed that magnet is not subjected to the erosion of reacting gas, lead is acidproof, alkaline-resisting, plasticity is good, so except protecting well the magnet, the cladding performance is also fine; Plumbous also available leypewter soldered easily realizes the segmented seal to magnet; Owing to have gas passage in the driven shaft, can reduce the conduction surface of axle on the one hand, reduce heat conduction, the block bearing that has guaranteed driven shaft on the other hand is gas pressure balancing up and down, makes the reacting gas bearing of can not flowing through, thereby has avoided the mistake of blowing of bearing grease.

The utility model is described in further detail below in conjunction with drawings and Examples:

Accompanying drawing is the structural representation of a kind of big moment slow-speed of revolution permanent-magnet sealing transmission device of the present utility model.

Accompanying drawing has been described an embodiment of the present utility model.Among the figure, division board 36 constitutes a seal casinghousing with lower support body 22, bottom end cover 10; Still

mouth seal ring

19,20 is equipped with in lower support body 22 lower ends, is used for being tightly connected with reactor mouth 61, and sealing ring and bearing 44 are housed in the upper end cover 45, and the driving shaft 47 that is connected with reductor; An active disk 75 that is connected with driving shaft 47 is contained in upper support body 42 cavitys, and

initiatively disk

75 and 45 of upper end covers are equipped with thrust bearing 48, and bearing 48 is sleeved on the driving shaft 47; Be equipped with from movable magnetic disc 32 in lower support body 22 cavitys relative, be equipped with by carbon steel plate and the compound division board 36 that constitutes of magnetic conduction austenite stainless steel plate not at active disk 75 and from 32 of movable magnetic discs with active disk 75; At

division board

36 and 75 of disks of active thrust bearing 59 is housed, at division board 36 and from 32 of movable magnetic discs thrust bearing 60 is housed, division board 36 edges rely on bolt clip up and down between the supporting mass; On division board 36 and lower support body 22 composition surfaces sealing ring 1 is housed; A permanent magnetism active magnet ring 38 is contained on the active disk 75 with bag active magnetic ring protection sheet lead 71 thereon, relative with position on the active disk 75 that magnet ring 38 initiatively is housed from movable magnetic disc 32, a driven magnet ring 69 of permanent magnetism and bag driven magnet ring protection sheet lead 70 thereon is housed; Between active disk 75 upper surfaces and upper support body 42 inboards, leave slit 51, leave latasuture crack 50 at active disk 75 circumferences and 42 of upper support bodies, slit 49 in the lower surface of

active disk

75 and 36 of seal isolation plates leave, on active disk 75, have and get rid of oil groove 3 and one group of through hole 52 as drainback passage, when 75 rotations of active disk, division board 36 and initiatively the oil between disk on absorbing division board in the heat, principle according to centrifugal pump, radially outwards flow, successively through latasuture crack 50, last slit 51, slit 49 in through hole 52 returns then, at this moment, the part heat of oil is absorbed by upper support body 42, and upper support body 42 outsides have radiated rib, like this, the temperature of upper support body and oil will reach heat balance when being raised to certain value, thereby realize the natural circulation cooling; Driven shaft 76 be welded into an integral body from movable magnetic disc 32, from movable magnetic disc 32 bottoms bearing 26, packing ring 24 are housed, driven shaft 76 hollow spaces stud with plastic tube 25, gas passage 54 is arranged in the plastic tube 25, having a gas passage 56 from the movable magnetic disc bottom, gas passage 56 1 ends communicate with gas passage 54 in the driven shaft, the other end with communicate from 22 slits of movable magnetic disc 32 and lower support body; The effect of gas passage 54,56 is: keep bearing 26,15 two ends gas pressure balancings, make the reacting gas bearing 26,15 of can not flowing through, thereby avoided the mistake of blowing of bearing grease; The part that lower support body 22 is inboard and driven shaft 76 is close studs with cooling jacket 23, and cooling jacket 23 outsides have the current groove 62,63,64,65 that connects successively by

water stream channel

66,67,68.The admitting pipe joint 7 that links to each other with current groove 62 is housed on the lower support body 22, the titting water outlet 78 that links to each other with current groove 65 also is housed on the lower support body 22; 76 of lower support body 22 lower ends and driven shafts are equipped with bearing 15, leather cup 13 etc.; Tipping connects the connecting bolt 11 that whisks device in the screw of driven shaft 76 lower end hollow spaces, has the gas passage 74 that communicates with gas passage 54 in the driven shaft 76 in the bolt 11, and communicates in opening 53 and reactor.

2,8 is bolt among the figure, and 55 are following slit.

Claims

1, a kind of big moment slow-speed of revolution permanent-magnet sealing transmission device comprises magnetic driver, and it is characterized in that: magnetic driver is made up of active disk that is inlaid with permanent magnetic ring and driven disk, and initiatively disk is provided with becoming from movable magnetic disc axially; Initiatively disk be connected with driven shaft with driving shaft respectively from movable magnetic disc; Disk and initiatively from the seal isolation plate is housed between movable magnetic disc; Disk, axle, division board all are contained in the seal casinghousing.

2, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 1 is characterized in that: between disk and seal isolation plate thrust bearing is housed.

3, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 2 is characterized in that: the seal isolation plate adopts clad steel plate.

4, according to the described big moment slow-speed of revolution permanent-magnet sealing transmission device of claim 1-3, it is characterized in that: have self-loopa cooling structure between seal isolation plate and active disk.

5, according to the described big moment slow-speed of revolution permanent-magnet sealing transmission device of claim 1-3, it is characterized in that: have the outer circulation cooling structure around the driven shaft.

6, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 4 is characterized in that: have the outer circulation cooling structure around the driven shaft.

7, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 6 is characterized in that: cladding has sheet lead on the permanent magnetic ring.

8, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 7 is characterized in that: have gas channel in the driven shaft.

9, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 8, it is characterized in that: self-loopa cooling structure is by the groove on the active disk, and seal isolation plate and the latasuture crack between middle slit, active magnetic plate edge and the housing between disk initiatively, initiatively the last slit between disk another side and housing and the drainback passage that runs through the active disk are formed; In slit, latasuture crack, go up the slit, and drainback passage constitute circulating oil path.

10, big moment slow-speed of revolution permanent-magnet sealing transmission device according to claim 9, it is characterized in that: have an outside to have the water collar of the one group of groove that communicates successively in the outer circulation cooling structure, water collar is embedded on the shell, the water collar inboard is enclosed within on the driven shaft, and the water collar groove at two ends up and down is equipped with the water-in and water-out pipe joint respectively.