CN2049967U - High-pressure stillage magnetic force driving head - Google Patents

Abstract

The utility model discloses a magnetic force driving device for high-pressure stillage stirring shaft driving and sealing. An external magnet is driven to rotate by a generator and a decelerator. An inner magnet arranged in a sealing cover rotates together with a stirring shaft which is fixed on the inner magnet under the action of magnetic force. Then static sealing of the sealing cover replaces the dynamic sealing of the stirring shaft, and therefore, a leak-tightness aim is achieved. The utility model has the characteristics that the rotary motion of the stirring shaft is supported by two sets of rolling bearings, and the lubrication problem is solved. Therefore, the manufacturing, assemblage, and maintenance process become simple and the life span is increased. Cost of manufacture and operating cost are reduced.

Description

High-pressure stillage magnetic force driving head

The utility model relates to the shaft transmission and the sealing device of a kind of chemical reaction kettle that is used for, particularly high pressure chemistry reactor.

At present, the shaft of chemical reaction kettle generally adopts machine driving, and utilizes packing seal or mechanical seal.This transmission device, not high or still applicable for the still internal pressure to leaking the very not harsh operating mode of requirement, on the contrary then be difficult to be competent at.West Germany Andreas Hofer high pressure technique Co., Ltd has made a kind of autoclave transmission mechanism that utilizes magnetic drives, and it changes into static seal to the rotary dynamic seal of prior art, thereby guarantees can not leak.But the problem that it exists is:

1, with special self-lubricating plain bearing supporting shaft, the problem of thereupon bringing is that bearing is made difficulty, requires high to assembling, maintenance technique.

2, the cooling system of sliding bearing makes whole transmission mechanism become complicated.

The purpose of this utility model provides a kind of autoclave magnetic drives head with rolling bearing supporting shaft, has both reached the sealing effectiveness that does not leak, and makes manufacturing, assembling and easy row easy to maintenance again, thereby reduces manufacturing cost and running expense.

This purpose is to have been undertaken improving by the magnetic driving mechanism to West Germany Andreas Hofer company reaching.Both transmission principles are basic identical.Promptly drive half-coupling 1, coupling sleeve 2 and outer magnet 3 rotations by motor and decelerator thereof.And the shaft 8 that inner magnet 4 installs under magneticaction thereon rotates together.A seal closure 5 also is housed between outer magnet 3 and inner magnet 4, the rolling bearing that a cover supporting outer magnet 3 rotatablely moves respectively is housed in the upper and lower of seal closure 5.Axially being pressed on the tubular support 10 of seal closure by lap joint flange 7, and tubular support 10 is assemblied on the kettle cover 11 by flange.Some covers are housed on the shaft 8 support the bearing that it rotatablely moves.So when shaft 8 runnings, seal closure 5 is hedged off from the outer world medium in the still fully, will rotate the moving close static seal of changing into, thereby reach the purpose of not leaking.

The improved part of the utility model is: will support bush(ing) bearing and the plain thrust bearing that shaft 8 rotatablely moves and replace with two cover rolling bearings, and promptly go up rolling bearing 13 and following rolling bearing 15, both are separated by a distance, the rigidity that supports with assurance.In order to guarantee that bearing runs well, must add lubricant is that lubricating grease or lubricating oil are lubricated.Therefore in addition, the still internal contamination reaction medium that bleeds for lubricant is unlikely in last rolling bearing 13 and 1 or the lubricant sealing device is housed below the rolling bearing 15 down, also is equipped with one simultaneously and overlaps and deposit blowdown apparatus below rolling bearing 15 down.Secondly, on the wall body of tubular support 10, also be shaped on autoclave body in and the pressure compensation opening that communicates in seal closure 5 chambeies, when temperature in the kettle changed, unlikely imbalance owing to pressure made shaft 8 bear too big axial force like this.

Following accompanying drawing shows two embodiment of the present utility model:

Fig. 1 is embodiment one, the autoclave magnetic drives header structure figure of solid lube bearing.

Fig. 2 is embodiment two, the autoclave magnetic drives header structure figure of thin oil lubricant bearing.

Fig. 3 is an A portion enlarged drawing.

Fig. 4 is the B-B profile.

Below in conjunction with drawings and Examples the utility model is described in further details.

Referring to Fig. 1.Shaft 8 supports by two cover rolling bearings, and last rolling bearing 13 is a cover double-row angular contact ball bearing, and following rolling bearing 15 is a cover radial ball bearing.This two covers rolling bearing has added lubricating grease (butter) when assembling, lubricating grease can select for use No. 3 or No. 4 bentonite greases, silica gel lubricating grease, No. 4 composite calcium-base fat or other suitable lubricating grease, changing lubricating grease can carry out when autoclave turns round a time between overhauls(TBO) (as half a year), in order to prevent the leakage of lubricating grease, below last rolling bearing 13, be equipped with a band O shape rubber seal on seal box 14 simultaneously, the lower seal box 16 of a band O shape rubber gasket also is housed below rolling bearing 15 down.And the lower seal box afterbody have a long sleeve.Be positioned at lower seal box 16 following bottoms 20 and also have a tail cover up.Tail is placed within the long sleeve, politef cover 18 of packing into of the tubular gap, chamber between the two.In addition, on bottom 20, also has the dirty chamber 19 of a storage.So lubricating grease is strictly sealed and is unlikely Lou to advance in the still, the residual fat of minute quantity and dirt are stored in the dirty chamber 19 of storage, remove when waiting to repair.Drilling bore hole 6,9 and 17 is as pressure compensation opening on the wall body of tubular support 10, so that the space of 11 of the annular chamber of 10 on chamber within the seal closure 5, shaft 8 and tubular support, tubular support 10 and kettle covers all reaches balance with the still internal pressure, in order to avoid shaft 8 bears excessive axial force.

Referring to Fig. 2,3 and 4, two cover rolling bearings of supporting shaft 8 are identical with embodiment one in the present embodiment.Different places is that its lubricant adopts thin oil (being lubricating oil) lubricated, and thin oil can be selected No. 20 compressor oils, No. 38 cylinder oils, No. 52 steam cylinder oils or other suitable trade mark for use.Be drilled with an oil filler point 21 and an outage 22 on the wall of tubular support 10, by oil filler point apply oil in driving head, oil level is to be advisable a little more than last rolling bearing 13 before the running.In order to prevent that lubricated oil leakage from advancing in the still, below rolling bearing 15 down, be equipped with a lower seal box 16 '.In the groove on lower seal box 16 tops, an O-ring seals 24 that seals with shaft 8 is housed, an O shape with the sealing of bottom 20 ' tail cover is housed respectively in two grooves of its underpart seals 25.Can guarantee that so just lubricating oil can never leak to still.Simultaneously, bottom 20 ' on also make an outage 22 ', one end and oil storage chamber 19 ' communicate, the other end communicates with outage 22 on the tubular support 10.When needs more during oil change, as long as open the control valve of outage 22, then under differential pressure action, just the lubricating oil in the driving head can be discharged.In addition, bottom 20 ' on also make another one hole 23 ', one end and lower seal box 16 ' within the chamber communicate, the other end communicates with the mudhole 23 of the wall body of tubular support 10.Therefore, enter if a spot of sump oil infiltrate O-ring seals 25 is arranged lower seal box 16 ' the chamber in, then can open the control valve of mudhole 23, under differential pressure action, sump oil is discharged.Secondly, drilling bore hole 9 is as pressure compensation opening on the wall body of tubular support 10, and its effect is identical with the effect of embodiment one, no longer repeats.

The utility model has the advantages that: both guaranteed the positive confinement of autoclave shaft, made again that manufacturing, assembling and maintenance process are simple, expense is cheap, and greatly prolong service life.

Claims (3)

1, a kind of autoclave magnetic drives head, mainly drive half-coupling 1, coupling sleeve 2 and outer magnet 3 rotations by motor and decelerator thereof, inner magnet 4 with shaft 8 rotations that install thereon, also has a seal closure 5 between outer magnet 3 and inner magnet 4 under magneticaction.The rolling bearing that one cover supporting outer magnet 3 rotatablely moves respectively is housed in the upper and lower of seal closure 5, and axially being pressed on the tubular support 10 of seal closure 5 by lap joint flange 7, and tubular support 10 is assemblied on the kettle cover 11 by flange, and its bearing that rotatablely moves of supporting is housed on the shaft 8, it is characterized in that:

The bearing that a, supporting shaft 8 rotatablely move is the rolling bearing that two covers keep at a certain distance away, and promptly goes up rolling bearing 13 and following rolling bearing 15,

B, this two covers rolling bearing are lubricated by lubricant,

C, in last rolling bearing 13 and 1 or down the lubricant seal member also is housed below the rolling bearing 15, and below rolling bearing 15 down, also have a cover to deposit sewage component,

D, on the wall body of tubular support 10, be shaped on kettle in and the balance pipe that communicates in seal closure 5 chambeies.

2, autoclave magnetic drives head according to claim 1 is characterized in that:

The last rolling bearing 13 of a, said supporting shaft 8 is a cover double-row angular contact ball bearing, and following rolling bearing 15 is a cover radial ball bearing,

B, lubricated this two covers Lubrication of Rolling Contact Bearing agent are lubricating grease,

C, lubricant seal member and deposit sewage component and can adopt following structure: go up the last seal box 14 of adorning a band O shape rubber seal below the rolling bearing 13, the lower seal box 16 of another O shape rubber seal of the following dress of following rolling bearing 15, and the afterbody of lower seal box 16 has a long sleeve, is positioned at the bottom below the lower seal box 16.20 also have a tail cover that makes progress, and this tail is placed within the long sleeve, and also pack into polytetrafluoroethylene (PTFE) cover 18 and bottom 20 of the tubular gap between the two also has a dirty chamber 19 of storage,

Pressure compensation opening on d, said tubular support 10 wall bodies is 6,9 and 17.

3, autoclave magnetic drives head according to claim 1 is characterized in that:

The last rolling bearing 13 of a, said supporting shaft 8 is a double-row angular contact ball bearing, and following rolling bearing 15 is a radial ball bearing.

B, lubricated this two covers Lubrication of Rolling Contact Bearing agent are lubricating oil.

C, on the wall body of tubular support 10, be shaped on an oil filler point 21 and an outage 22,

D, lubricant seal member can adopt following structure: lower seal box 16 be contained in down rolling bearing 15 below, an O-ring seals 24 that seals with shaft 8 is housed in the groove on its top, tail with bottom 20 ' is housed respectively in two grooves of bottom overlaps the O-ring seals 25 that seals

E, lubricant are deposited sewage component can adopt following structure: be shaped on a mudhole 23 ' on bottom 20 ', the one end communicates with chamber within the lower seal box 16 ', and the other end communicates with mudhole 23 on cylindrical stent 10 wall bodies,

Pressure compensation opening on f, cylindrical stent 10 wall bodies is 9.

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