CN104226173B - A kind of magnetic sealing device for magnetic stirring apparatus - Google Patents
A kind of magnetic sealing device for magnetic stirring apparatus Download PDFInfo
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- CN104226173B CN104226173B CN201410481760.9A CN201410481760A CN104226173B CN 104226173 B CN104226173 B CN 104226173B CN 201410481760 A CN201410481760 A CN 201410481760A CN 104226173 B CN104226173 B CN 104226173B
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Abstract
The invention discloses a kind of magnetic sealing device for magnetic stirring apparatus, comprise the outer magnet rotor be connected with the drive unit output shaft of outside, magnet rotor in corresponding with outer magnet rotor, transmission main shaft and the sealing drum being positioned at transmission main shaft top, the present invention also comprises the installing plate being arranged on transmission main shaft lower end, fix Dry wellbore on a mounting board and sealed frame, be arranged in Dry wellbore for the bearing group that supports transmission main shaft and the bearings cylinder be fixedly connected with transmission main shaft for spring bearing group, gap between described bearings cylinder and Dry wellbore forms lubricant medium chamber.The present invention passes through field drives, reach hermetic effect, thoroughly solve the problem of mechanical seal and the insoluble seal failure of packing seal and leakage pollution, the present invention makes bearing group lubricant medium not leak, and thoroughly solves the leakage problem of bearing lubrication medium.
Description
Technical field
The present invention relates to and head into and bottom entering type chemical machinery mixing plant technical field, be specifically related to a kind of magnetic sealing device for magnetic stirring apparatus.
Background technology
At present, chemical industry stirs main employing mechanical seal and packing seal in application.Mechanical seal to be fitted at elastic force (or magnetic force) the effect lower maintenance rotating ring of fluid pressure and compensation mechanism and stationary ring to the end face making relative sliding perpendicular to axle by a pair or several and is equipped with auxiliary seal and reaches the gland seal device of Drain Resistance.Packing seal is that filler loads after packing cavity, makes axial compression through gland screw to it, when axle and filler have relative motion, due to the plasticity of filler, makes its generation radial load, and with axle close contact.Meanwhile, the lubricant flooded in filler is extruded, between contact surface, form oil film.Because contact condition is not uniform especially, state that contact site just occurs " boundary lubrication ", is called " bearing effect "; And the recess do not contacted forms little oil groove, there is thicker oil film, irregular labyrinth together with contact site forms with noncontact position, play a part to stop liquid to flow leakage.
Mechanical seal can not positive confinement, allows the leakage of trace to pollute, and has the limited field of HTHP.Packing seal in running, be easily worn, etch, the factor such as aging, dry, temperature impact, lose compactness gradually and cause seepage.Therefore, in chemical process, high temperature, high pressure, high vacuum, the problems such as that carries out under high rotating speed is various inflammable, explosive, the chemical reaction of highly dangerous medium, and seal failure and leakage pollution easily appear in mechanical seal and packing seal, dangerous.
In the structure of current other employing magnetic seal, magnetic sealing device comprises transmission main shaft, sealing drum, interior magnet rotor and the outer magnet rotor corresponding with interior magnet rotor, outer magnet rotor is connected with output end of reducer by outer magnet rotor shaft coupling, and drive motors is connected with reductor by motor shaft coupling.The lubrication of bearing adopts Magnetic drive and the mechanical isolation type Magnetic drive agitator of band balance sysmte and mechanical seal.This is that one has the Magnetic drive of anti-corrosion protection (mechanical isolation) to stir, and it has a set of pressure balancing system, arranges an isolation link (machine seals) between still space and Magnetic drive space.Comprise in the Magnetic drive cavity of interior magnetic assembly and bearing, fill stable performance and the good sealing liquid of greasy property.Sealing liquid pressure all the time higher than pressure in still, and maintains the constant value irrelevant with pressure in still.But the bearing supporting transmission main shaft in existing magnetic seal exists lubrication problem, need the oil level of observation lubricating oil closely, thus add risk and work difficulty.
Summary of the invention
For the deficiency that prior art exists, the object of the invention is to provide a kind of magnetic sealing device for magnetic stirring apparatus, solve existing mechanical seal, packing seal and easily occur seal failure and leakage pollution problem, and the spring bearing lubrication problem of transmission main shaft in magnetic seal.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of magnetic sealing device for magnetic stirring apparatus of the present invention, comprise the outer magnet rotor be connected with the drive unit output shaft of outside, magnet rotor in corresponding with outer magnet rotor, transmission main shaft and the sealing drum being positioned at transmission main shaft top, the present invention also comprises the installing plate being arranged on transmission main shaft lower end, fix Dry wellbore on a mounting board and sealed frame, be arranged in Dry wellbore for the bearing group that supports transmission main shaft and the bearings cylinder be fixedly connected with transmission main shaft for spring bearing group, gap between described bearings cylinder and Dry wellbore forms lubricant medium chamber.
Above-mentioned Dry wellbore is provided with bearing friction top, the height of Dry wellbore is higher than the liquid level of lubricant medium in lubricant medium chamber.
Be provided with the first oil sealing between above-mentioned bearing friction top and bearings cylinder, between described bearings cylinder and Dry wellbore, be provided with the second oil sealing.
Above-mentioned Dry wellbore is provided with lubricant medium filler, and described lubricant medium filler communicates with lubricant medium chamber; Each bearing of bearing group is provided with the tank filler sleeve communicated with Dry wellbore.
Above-mentioned transmission main shaft is provided with passage, for making lubricant medium chamber external and internal pressure consistent; Described sealing drum, sealed frame, installing plate and the container be connected with installing plate form a seal cavity; Sealed frame be provided with communicate with seal cavity fill nitrogen hole.
Above-mentioned installing plate is arranged on transmission main shaft by lip packing, is provided with anti-wear sleeve between described lip packing and transmission main shaft.
Above-mentioned interior magnet rotor is fixedly connected with transmission main shaft upper end, and described sealing drum is positioned at outside magnet rotor, and sealing drum is fixed on end flange, and described outer magnet rotor is enclosed within the outside of sealing drum.
Be arranged with cooling cylinder outside above-mentioned outer magnet rotor, cooling cylinder is provided with cooling water inlet, coolant outlet and cooling water overflow mouth, and the position of described delivery port is higher than the position of water inlet, and the position of described cooling water overflow mouth is higher than the position of delivery port.
Above-mentioned bearings cylinder is provided with the inner sensor for monitoring interior magnet rotor, and described sealed frame is provided with outer sensor.
The present invention passes through field drives, reach hermetic effect, thoroughly solve the problem of mechanical seal and the insoluble seal failure of packing seal and leakage pollution, the present invention makes bearing group lubricant medium not leak, and thoroughly solves the leakage problem of bearing lubrication medium.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of Dry wellbore.
Each label in figure: drive motors 1, motor coupler 2, reductor 3, outer magnet rotor shaft coupling 4, sealing drum 5, outer magnet rotor 6, interior magnet rotor 7, transmission main shaft 8, first oil sealing 9, bearing friction top 10, bearings cylinder 11, sealed frame 12, bearing group 13, second oil sealing 14, Dry wellbore 15, installing plate 16, lip packing 17, fill nitrogen hole 18, passage 19, inner sensor 20, outer sensor 21, lubricant medium chamber 22, lubricant medium filler 23, anti-wear sleeve 24, cooling cylinder 25, cooling water inlet a, coolant outlet b, cooling water overflow mouth c.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
See Fig. 1, interior magnet rotor 7 is fixedly connected with the upper end of transmission main shaft 8, sealing drum 5 is provided with outside interior magnet rotor 7, sealing drum 5 is fixed on end flange, the outer cover of sealing drum 5 has the outer magnet rotor 6 corresponding with interior magnet rotor 7, outer magnet rotor 6 is fixedly connected with outer magnet rotor 6 shaft coupling 4, and outer magnet rotor 6 shaft coupling 4 is connected with reductor 3 output shaft, and reductor 3 is connected with drive motors 1 by motor coupler 2.
In transmission main shaft 8 lower end, installing plate 16 is installed, installing plate 16 is fixed with Dry wellbore 15 and sealed frame 12, Dry wellbore 15 being provided with the bearing group 13 for supporting transmission main shaft 8, being fixed on the bearings cylinder 11 for spring bearing group 13 on transmission main shaft 8.
Bearing group 13 makes lubricant medium be contained in the oil sump of Dry wellbore 15, and oil sump is in pressure balance all the time, can not overflow.See Fig. 2, the effect one of Dry wellbore is the support as bearing group 13, and two are and bearings cylinder 11, and frame 12 forms the groove of cofferdam type, to make lubricating oil in groove, can not overflow.
Gap between bearings cylinder 11 and Dry wellbore 15 forms lubricant medium chamber 22.Sealing drum 5, sealed frame 12, installing plate 16 and the container be connected with installing plate 16 form a seal cavity.
Dry wellbore 15 is provided with bearing friction top 10, and make the height of Dry wellbore 15 higher than the liquid level of lubricant medium in lubricant medium chamber 22, be provided with the first oil sealing 9 between bearing friction top 10 and bearings cylinder 11, between bearings cylinder 11 and Dry wellbore 15, be provided with the second oil sealing 14.
Dry wellbore 15 is provided with lubricant medium filler 23, and lubricant medium filler 23 communicates with lubricant medium chamber 22.Bearing group 13 is open type taper roll bearing, and lubricating oil is filled into lubricant medium chamber 22 from lubricant medium filler 23.
Transmission main shaft 8 is arranged passage 19, when sealing with nitrogen, nitrogen keeps sealed bearing annular seal space pressure, and continuous micro nitrogen enters reactor by the lip packing 17 being arranged in transmission main shaft 8 lower end.Described transmission main shaft 8 is provided with passage 19, for making lubricant medium chamber 22 external and internal pressure consistent.Sealed frame 12 be provided with communicate with seal cavity fill nitrogen hole 18.
Two lip packing 17 are set between transmission main shaft 8 and installing plate 16, anti-wear sleeve 24 is set between lip packing 17 and transmission main shaft 8.
Outer magnet rotor 6 arranges cooling cylinder 25, and cooling cylinder 25 arranges cooling water inlet a and coolant outlet b.Cooling cylinder 25 is also provided with cooling water overflow mouth c, and the position of cooling water overflow mouth c is higher than coolant outlet b.Transmission main shaft 8 is connected with puddler by shaft coupling.
Bearings cylinder 11 is provided with the inner sensor 20 for monitoring interior magnet rotor 7, and for surveying the rotating speed of internal rotor, described sealed frame 12 is provided with outer sensor 21, and outer sensor 21 is the responding device of inner sensor 20.
The present invention passes through field drives, reach hermetic effect, thoroughly solve the problem of mechanical seal and the insoluble seal failure of packing seal and leakage pollution, the present invention makes bearing group 13 not leak with lubricant medium, thoroughly solves the leakage problem of bearing lubrication medium.
The course of work of the present invention is as follows:
Reductor 3 power drives outer magnet rotor 6 to rotate by outer magnet rotor 6 shaft coupling 4, and in outer magnet rotor 6 is driven by magnetic drives, magnet rotor 7 rotates, and sealing drum 5 does not all contact with inside and outside magnet rotor 6, plays and keeps apart inside and outside magnet rotor 6, realize static seal.Within isolating seal cylinder 5 and reactor be a seal cavity.
Interior magnet rotor 7 drives transmission main shaft 8 to rotate, and the support of transmission main shaft 8 is supported by a pair taper roll bearing group 13, and bearing group 13 is supported by Dry wellbore 15 and bearings cylinder 11.Dry wellbore 15 and sealed frame 12 form static airtight concave shaped cavity, under inputting type is installed, lubricant medium liquid level in concave shaped cavity is lower than Dry wellbore 15, lubricant medium can not be overflowed, when there being pressure, lubricant medium because the pressure of passage 19 in concave shaped cavity balances all the time, do not have pressure differential, so can not be overflowed yet.
Wherein, lubricant medium filler 23 annotates lubricant medium to lubricant medium chamber 22, lubrication spring bearing group 13.Add lubricant medium by lubricant medium filler 23, adopt intrusive mood lubrication, make bearing group 13 be in good lubricating status, extend the service life of bearing group 13; Also reduce the temperature rise of bearing group 13 when running up simultaneously.
Wherein, be arranged with the position of cooling water inlet a, coolant outlet b and cooling water overflow mouth c, coolant outlet b outside outer magnet rotor 6 higher than cooling water inlet a, the position of cooling water overflow mouth c is higher than coolant outlet b.Outer magnet rotor 6 is outside equipped with cooling cylinder 25, ensures the operating temperature of magnet rotor, avoids the demagnetization phenomenon produced due to high temperature.The position of coolant outlet b, higher than cooling water inlet a, defines the cool cycles of flowing, further increases the cooling effect of cooling cylinder 25.Consider the phenomenon of expanding with heat and contract with cold of water in cooling cylinder 25, add cooling water overflow mouth c on delivery port top, by the height of liquid level in cooling water overflow mouth c controlled cooling model cylinder 25.
Wherein, when filling nitrogen hole 18 material enters in interior magnet rotor 7 and upper axle bearing assembly in strict restriction still, pass into nitrogen protection, make pressure in axle bearing assembly be greater than pressure in still, trace nitrogen gas enters in still from lip packing 17.
Wherein, bearings cylinder 11 arranges an inner sensor 20, the rotary state of transmission main shaft 8 is monitored by inner sensor 20, is occurring that moment of torsion is excessive, when interior magnet rotor 7 rotating speed is asynchronous with outer magnet rotor 6, by electrical control motor, and protection magnet coupler.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. the magnetic sealing device for magnetic stirring apparatus, comprise and the outer magnet rotor (6) that the drive unit output shaft of outside is connected, the interior magnet rotor (7) corresponding with outer magnet rotor (6), transmission main shaft (8) and the sealing drum (5) being positioned at transmission main shaft (8) top, it is characterized in that
Also comprise be arranged on transmission main shaft (8) lower end installing plate (16), be fixed on Dry wellbore (15) on installing plate (16) and sealed frame (12), be arranged on for the bearing group (13) that supports transmission main shaft (8) and the bearings cylinder (11) be fixedly connected with transmission main shaft (8) for spring bearing group (13) in Dry wellbore (15), the gap between described bearings cylinder (11) and Dry wellbore (15) forms lubricant medium chamber (22);
Described transmission main shaft (8) is provided with passage (19), for making lubricant medium chamber (22) external and internal pressure consistent;
Described sealing drum (5), sealed frame (12), installing plate (16) and the container be connected with installing plate (16) form a seal cavity;
Described sealed frame (12) be provided with communicate with seal cavity fill nitrogen hole (18).
2. the magnetic sealing device for magnetic stirring apparatus according to claim 1, is characterized in that,
Described Dry wellbore (15) is provided with bearing friction top (10), the height of Dry wellbore (15) is higher than the liquid level of lubricant medium chamber (22) interior lubricant medium.
3. the magnetic sealing device for magnetic stirring apparatus according to claim 2, is characterized in that,
Be provided with the first oil sealing (9) between described bearing friction top (10) and bearings cylinder (11), between described bearings cylinder (11) and Dry wellbore (15), be provided with the second oil sealing (14).
4. the magnetic sealing device for magnetic stirring apparatus according to claim 1, is characterized in that,
Described Dry wellbore (15) is provided with lubricant medium filler (23), and described lubricant medium filler (23) communicates with lubricant medium chamber (22);
Each bearing of described bearing group (13) is provided with the tank filler sleeve communicated with Dry wellbore (15).
5. the magnetic sealing device for magnetic stirring apparatus according to claim 1, is characterized in that,
Described installing plate (16) is arranged on transmission main shaft (8) by lip packing (17), is provided with anti-wear sleeve (24) between described lip packing (17) and transmission main shaft (8).
6. the magnetic sealing device for magnetic stirring apparatus according to claim 1, is characterized in that,
Described interior magnet rotor (7) is fixedly connected with transmission main shaft (8) upper end, described sealing drum (5) is positioned at magnet rotor (7) outward, sealing drum (5) is fixed on end flange, and described outer magnet rotor (6) is enclosed within the outside of sealing drum (5).
7. the magnetic sealing device for magnetic stirring apparatus according to claim 1, is characterized in that,
Cooling cylinder (25) is arranged with outside described outer magnet rotor (6), described cooling cylinder (25) is provided with cooling water inlet (a), coolant outlet (b) and cooling water overflow mouth (c), the position of described coolant outlet (b) is higher than the position of cooling water inlet (a), and the position of described cooling water overflow mouth (c) is higher than the position of coolant outlet (b).
8. the magnetic sealing device for magnetic stirring apparatus according to claim 1, is characterized in that,
Described bearings cylinder (11) is provided with the inner sensor (20) for monitoring interior magnet rotor (7), and described sealed frame (12) is provided with outer sensor (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481760.9A CN104226173B (en) | 2014-09-19 | 2014-09-19 | A kind of magnetic sealing device for magnetic stirring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481760.9A CN104226173B (en) | 2014-09-19 | 2014-09-19 | A kind of magnetic sealing device for magnetic stirring apparatus |
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| CN104226173A CN104226173A (en) | 2014-12-24 |
| CN104226173B true CN104226173B (en) | 2016-04-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104882998B (en) * | 2015-06-03 | 2017-07-11 | 江苏胜开尓工业技术有限公司 | A kind of magnetic sealing device for big torque magnetic stirring apparatus |
| CN106370504B (en) * | 2016-08-15 | 2019-03-15 | 中国石油天然气股份有限公司 | Oil product sample preparation device and sample preparation method thereof |
| CN110479197B (en) * | 2019-08-08 | 2020-06-30 | 恒华源化工设备(武汉)有限公司 | Sealing device based on magnetic stirring transmission |
| CN111365460B (en) * | 2020-03-16 | 2022-02-08 | 威海化工机械有限公司 | Magnetic coupling transmission sealing device with efficient heat exchange system |
| CN113465363A (en) * | 2021-06-15 | 2021-10-01 | 西安交通大学 | Magnetic rotary deposition device and high-temperature high-pressure sintering furnace based on same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2427677Y (en) * | 2000-02-18 | 2001-04-25 | 吴宣 | Magnetic force transmission device |
| US20050232074A1 (en) * | 2004-04-20 | 2005-10-20 | Symyx Technologies, Inc. | Pressurized reactor apparatus with magnetic stirring |
| CN203030264U (en) * | 2012-12-31 | 2013-07-03 | 杭州原正化学工程技术装备有限公司 | Gas-liquid reactor and magnetic drive device thereof |
| CN103191667B (en) * | 2013-04-08 | 2015-09-16 | 田政 | A kind of magnetic sealing device for magnetic stirring apparatus |
| CN204247141U (en) * | 2014-09-19 | 2015-04-08 | 江苏胜开尔工业技术有限公司 | A kind of magnetic sealing device for magnetic stirring apparatus |
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