CN114087368A - Combined sealing device for horizontal screw conveyor - Google Patents
Combined sealing device for horizontal screw conveyor Download PDFInfo
- Publication number
- CN114087368A CN114087368A CN202111322634.5A CN202111322634A CN114087368A CN 114087368 A CN114087368 A CN 114087368A CN 202111322634 A CN202111322634 A CN 202111322634A CN 114087368 A CN114087368 A CN 114087368A
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- China
- Prior art keywords
- shaft sleeve
- labyrinth seal
- seal seat
- labyrinth
- seat
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- 238000007789 sealing Methods 0.000 title claims abstract description 60
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 238000012856 packing Methods 0.000 claims abstract description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 26
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 13
- 239000004917 carbon fiber Substances 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims description 17
- 210000004907 gland Anatomy 0.000 claims description 14
- 239000011553 magnetic fluid Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 abstract description 6
- 231100000331 toxic Toxicity 0.000 abstract description 6
- 230000002588 toxic effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4472—Labyrinth packings with axial path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/32—Adaptations of bearings or couplings for supporting and connecting screws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/184—Tightening mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a combined sealing device for a horizontal screw conveyor, which comprises a short shaft sleeve and a long shaft sleeve, wherein a labyrinth sealing seat and a labyrinth sealing sleeve which are matched with each other are arranged between the short shaft sleeve and the long shaft sleeve; the invention adopts the packing seal composed of the packing box, the carbon fiber packing and the short shaft sleeve at the end close to the medium, the carbon fiber packing has the characteristics of wear resistance, high temperature resistance and corrosion resistance, the labyrinth seal composed of the labyrinth seal seat and the labyrinth seal cover is arranged between the packing seal and the magnetic liquid seal seat, the labyrinth seal mainly plays a role of reducing pressure of nitrogen introduced between the labyrinth seal and the packing seal, the magnetic liquid seal seat is mainly used for sealing and maintaining pressure of nitrogen and preventing the leakage of toxic and harmful gas in the interior, and by the method, the problems of short service life of the packing seal of the original spiral conveyor, environmental pollution, influence on personal safety and the like are thoroughly solved.
Description
Technical Field
The invention relates to the technical field of screw conveyors, in particular to a combined sealing device for a horizontal screw conveyor.
Background
The spiral conveyor is a machine which utilizes a motor to drive a spiral to rotate and push materials so as to realize the purpose of conveying, can realize horizontal, inclined or vertical conveying, and has the advantages of simple structure, small cross section area, good sealing property, convenient operation, easy maintenance, convenient closed transportation and the like;
at present, horizontal screw conveyors are widely applied to some chemical enterprises, the horizontal screw conveyors of the chemical enterprises mainly convey mineral powder, media are powder particles, the operation temperature of equipment is high, toxic and harmful gases are generated in the conveying process, the sealing requirement is high, most of the traditional sealing devices for the horizontal screw conveyors are sealed by filling materials, the sealing parts are often subjected to medium leakage, the environment and the human body are greatly injured, the service life of the sealing is only about one week, the sealing devices are required to be regularly cleaned and maintained, time and labor are wasted, the use is inconvenient, and the device is not worth of being widely popularized and applied, so that the combined sealing device for the horizontal screw conveyors is provided for solving the problems in the prior art.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a combined sealing device for a horizontal screw conveyor, in which a labyrinth seal composed of a labyrinth seal seat and a labyrinth seal cover is disposed between a packing seal and a magnetic liquid seal seat, and the combined sealing device for a horizontal screw conveyor is mainly used for reducing pressure of nitrogen introduced between the labyrinth seal and the packing seal, and the magnetic liquid seal seat is mainly used for sealing and maintaining pressure of nitrogen, and preventing leakage of toxic and harmful gas inside the combined sealing device for a horizontal screw conveyor.
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: a combined sealing device for a horizontal screw conveyor comprises a short shaft sleeve and a long shaft sleeve, wherein a labyrinth sealing seat and a labyrinth sealing sleeve which are matched with each other are arranged between the short shaft sleeve and the long shaft sleeve, the short shaft sleeve, the long shaft sleeve, the labyrinth seal seat and the labyrinth seal sleeve are all sleeved outside the rotating shaft of the spiral conveyer, a stuffing box is sleeved outside the short shaft sleeve, carbon fiber stuffing is arranged between the inner side of the stuffing box and the outer side of the short shaft sleeve, the outer side of the long shaft sleeve is sleeved with a magnetic liquid sealing seat, the top end of the labyrinth sealing seat is provided with a nitrogen inlet, the top end of the magnetic liquid sealing seat is provided with a nitrogen outlet, one side of the magnetic liquid sealing seat far away from the labyrinth sealing seat is provided with a gland which is sleeved outside the long shaft sleeve, and framework oil seals are arranged between the magnetic liquid sealing seat and the long shaft sleeve as well as between the gland and the long shaft sleeve, and the magnetic liquid sealing seat and the long shaft sleeve are rotationally connected through symmetrically distributed bearings.
The further improvement lies in that: two sets of the symmetry is equipped with the packing ring between the bearing, and is two sets of be equipped with first magnetic pole, second magnetic pole and the third magnetic pole that is the equidistance and distributes between the packing ring, be equipped with first permanent magnet between first magnetic pole and the second magnetic pole, be equipped with the second permanent magnet between second magnetic pole and the third magnetic pole.
The further improvement lies in that: the outer side of the long shaft sleeve is provided with a shaft check ring matched with the bearing, the outer sides of the first magnetic pole, the second magnetic pole and the third magnetic pole are respectively provided with a first sealing ring, and the magnetic liquid sealing seat is fixedly connected with the gland through an inner hexagon bolt.
The further improvement lies in that: the packing box is characterized in that a cooling water inlet is formed in the bottom end of the packing box, a cooling water outlet communicated with the cooling water inlet is formed in the top end of the packing box, and the packing box is fixedly connected with the labyrinth seal seat through an inner hexagon bolt.
The further improvement lies in that: labyrinth seal seat inboard is equipped with the first annular tooth that is the equidistance and distributes to form first order labyrinth with the auger delivery pivot, labyrinth seal cover inboard is equipped with the second annular tooth that is the equidistance and distributes to form second level labyrinth with the labyrinth seal seat, the labyrinth seal seat passes through hexagon socket head cap screw and magnetic fluid seal seat fixed connection.
The further improvement lies in that: one side of the magnetic liquid seal seat close to the labyrinth seal seat is provided with a second seal ring, one side of the labyrinth seal seat close to the stuffing box is provided with a third seal ring, one side of the stuffing box far away from the labyrinth seal seat is provided with a fourth seal ring, the inner side of the long shaft sleeve is provided with a fifth seal ring, and the inner side of the short shaft sleeve is provided with a sixth seal ring.
The further improvement lies in that: and the short shaft sleeve, the labyrinth seal sleeve and the long shaft sleeve are fixedly connected with a rotating shaft of the screw conveyer through a first set screw, a second set screw and a third set screw respectively.
The invention has the beneficial effects that: the invention comprises a short shaft sleeve and a long shaft sleeve, wherein a packing box, a carbon fiber packing and a short shaft sleeve are adopted to seal the end close to a medium, the carbon fiber packing has the characteristics of wear resistance, high temperature resistance and corrosion resistance, a labyrinth seal consisting of a labyrinth seal seat and a labyrinth seal cover is arranged between the packing seal and a magnetic liquid seal seat, the labyrinth seal mainly plays a role in reducing the pressure of nitrogen introduced between the labyrinth seal and the packing seal, the magnetic liquid seal seat is mainly used for sealing and maintaining the pressure of the nitrogen and preventing the leakage of toxic and harmful gas inside the packing seal seat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is an enlarged view of the present invention at a.
Wherein: 1. a short shaft sleeve; 2. a long shaft sleeve; 3. a labyrinth seal seat; 4. a labyrinth gland; 5. a stuffing box; 6. carbon fiber filler; 7. a magnetic liquid seal seat; 8. a nitrogen inlet; 9. a nitrogen outlet; 10. a gland; 11. framework oil seal; 12. a bearing; 13. a gasket; 14. a first magnetic pole; 15. a second magnetic pole; 16. a third magnetic pole; 17. a first permanent magnet; 18. a second permanent magnet; 19. a retainer ring for a shaft; 20. a first seal ring; 21. a cooling water inlet; 22. a cooling water outlet; 23. a first annular tooth; 24. a second ring-shaped tooth; 25. a second seal ring; 26. a third seal ring; 27. a fourth seal ring; 28. a fifth seal ring; 29. a sixth seal ring; 30. a first set screw; 31. a second set screw; 32. and a third set screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to the figure 1, the embodiment provides a combined sealing device for a horizontal screw conveyor, which comprises a short shaft sleeve 1 and a long shaft sleeve 2, wherein a labyrinth seal seat 3 and a labyrinth seal sleeve 4 which are matched with each other are arranged between the short shaft sleeve 1 and the long shaft sleeve 2, the short shaft sleeve 1, the long shaft sleeve 2, the labyrinth seal seat 3 and the labyrinth seal sleeve 4 are all sleeved outside a rotating shaft of the screw conveyor, a stuffing box 5 is sleeved outside the short shaft sleeve 1, a carbon fiber stuffing 6 is arranged between the inner side of the stuffing box 5 and the outer side of the short shaft sleeve 1, in order to prevent the carbon fiber stuffing 6 from wearing the rotating shaft in the operation process, the short shaft sleeve 1 is arranged on the rotating shaft, the short shaft sleeve 1 is fixed on the rotating shaft, the outer surface of the short shaft sleeve 1 is subjected to spraying treatment to improve the surface hardness and prevent the stuffing from wearing too fast, the service life is prolonged, the stuffing box 5, the carbon fiber stuffing 6 and the short shaft sleeve 1 form a stuffing seal and are mainly used for sealing dust, prevent dust from entering the magnetic liquid seal part behind, the outside of the long shaft sleeve 2 is sleeved with a magnetic liquid seal seat 7, the top end of the labyrinth seal seat 3 is provided with a nitrogen inlet 8, the pressure of the nitrogen inlet 8 is higher than the pressure in the conveyor, and mainly prevents toxic and harmful gas in the conveyor from leaking out, the top end of the magnetic liquid seal seat 7 is provided with a nitrogen outlet 9, the upper part of the nitrogen outlet is provided with a feedback valve, the nitrogen pressure entering from the nitrogen inlet 8 on the labyrinth seal seat 3 can be adjusted according to the pressure in the conveyor, so as to ensure that the nitrogen input pressure is always greater than the pressure in the conveyor, and thus the seal reliability is ensured, one side of the magnetic liquid seal seat 7 away from the labyrinth seal seat 3 is provided with a gland 10 sleeved outside the long shaft sleeve 2, framework oil seals 11 are arranged between the magnetic liquid seal seat 7 and the gland 10 and the long shaft sleeve 2, and the magnetic liquid seal seat 7 and the long shaft sleeve 2 are rotationally connected through bearings 12 which are symmetrically distributed, the magnetic liquid seal seat 7 is arranged on the labyrinth seal seat 3, all parts are integrated into a whole under the action of the hexagon socket head cap screw through the gland 10, namely, the magnetic liquid seal is realized, the long shaft sleeve 2 is fixed on the rotating shaft, and the running precision of the whole seal is ensured by the bearing 12.
The two groups of bearings 12 are symmetrically provided with washers 13, first magnetic poles 14, second magnetic poles 15 and third magnetic poles 16 are arranged between the two groups of washers 13 at equal intervals, first permanent magnets 17 are arranged between the first magnetic poles 14 and the second magnetic poles 15, and second permanent magnets 18 are arranged between the second magnetic poles 15 and the third magnetic poles 16.
The outer side of the long shaft sleeve 2 is provided with a shaft retainer ring 19 matched with the bearing 12, the outer sides of the first magnetic pole 14, the second magnetic pole 15 and the third magnetic pole 16 are respectively provided with a first sealing ring 20, the magnetic liquid sealing seat 7 is fixedly connected with the gland 10 through the hexagon socket head cap screw, the sealing performance is improved through the arrangement of the first sealing ring 20, the magnetic liquid sealing seat 7 is fixedly connected with the gland 10 through the hexagon socket head cap screw, and therefore structural firmness is guaranteed.
5 bottoms of packing box are equipped with cooling water inlet 21, 5 tops of packing box are equipped with the cooling water export 22 with cooling water inlet 21 intercommunication, packing box 5 passes through hexagon socket head cap screw and 3 fixed connection in the labyrinth seal seat, packing box 5 is installed on the casing of horizontal screw conveyer base, realize the cooling water circulation through cooling water inlet 21 and cooling water export 22, a heat for taking away screw conveyer production, avoid the short problem of life of carbon fiber filler 6 under high temperature.
One side that magnetic liquid seal receptacle 7 is close to labyrinth seal seat 3 is equipped with second sealing washer 25, one side that labyrinth seal seat 3 is close to stuffing box 5 is equipped with third sealing washer 26, one side that stuffing box 5 kept away from labyrinth seal seat 3 is equipped with fourth sealing washer 27, long axle sleeve 2 inboard is equipped with fifth sealing washer 28, short axle sleeve 1 inboard is equipped with sixth sealing washer 29, through set up the sealing washer between each part to the leakproofness has further been guaranteed.
Short axle sleeve 1, labyrinth seal cover 4 and major axis cover 2 are respectively through first holding screw 30, second holding screw 31 and third holding screw 32 and screw conveyer pivot fixed connection, install short axle sleeve 1, labyrinth seal cover 4 and major axis cover 2 in the screw conveyer pivot through first holding screw 30, second holding screw 31 and third holding screw 32 to structural firmness has been improved.
In the actual use process, the stuffing box 5 is installed on the shell of the horizontal screw conveyor base, and the cooling water circulation is realized through the cooling water inlet 21 and the cooling water outlet 22, so as to take away the heat generated by the screw conveyor;
in order to prevent the carbon fiber filler 6 from wearing the rotating shaft in the operation process, the short shaft sleeve 1 is arranged on the rotating shaft, the outer surface of the short shaft sleeve 1 is subjected to spraying treatment by being fixed on the rotating shaft, so that the surface hardness is improved, the filler is prevented from being worn too fast, and the service life is prolonged;
the stuffing box 5, the carbon fiber stuffing 6 and the short shaft sleeve 1 form stuffing seal which is mainly used for sealing dust and preventing the dust from entering a magnetic liquid seal part behind;
the labyrinth seal seat 3 is arranged on the stuffing box 5, a first annular tooth 23 is designed in the labyrinth seal seat, the first annular tooth 23 and the rotating shaft form a first-stage labyrinth seal, after the labyrinth seal seat 3 is installed, a labyrinth seal sleeve 4 is arranged on the outer side of the rotating shaft, a second annular tooth 24 is designed on the inner side of the labyrinth seal sleeve 4 and forms a second-stage labyrinth seal with the labyrinth seal seat 3, a nitrogen inlet 8 is designed on the labyrinth seal seat 3, the pressure of the nitrogen inlet is about higher than the pressure in the conveyor, toxic and harmful gases in the conveyor are mainly prevented from leaking out, and the two-stage labyrinth seal formed by the labyrinth seal seat 3, the labyrinth seal sleeve 4 and the rotating shaft mainly plays a role in reducing the pressure of nitrogen;
what install at labyrinth seal atmosphere end side is that magnetic fluid seals, and magnetic fluid seals is a zero leakage seal, can play the effect of zero leakage to nitrogen gas, and magnetic fluid seal seat 7 is installed on labyrinth seal seat 3, is in proper order from labyrinth seal end to atmosphere end: the magnetic liquid seal device comprises a magnetic liquid seal seat 7, a framework oil seal 11 and a long shaft sleeve 2, wherein the framework oil seal 11 is arranged in an inner hole of the magnetic liquid seal seat 7, the long shaft sleeve 2 is arranged on the inner side of the magnetic liquid seal seat 7, a bearing 12 is arranged on the inner side of the magnetic liquid seal seat 7, a gasket 13, a first magnetic pole 14, a first permanent magnet 17, a second magnetic pole 15, a second permanent magnet 18, a third magnetic pole 16, a gasket 13, a shaft check ring 19, a bearing 12 and a shaft check ring 19 are arranged from inside to outside in sequence, after all parts are installed at one time, all parts are integrated into a whole under the action of an inner hexagon bolt through a gland 10, namely, the magnetic liquid seal is realized;
the long shaft sleeve 2 is fixed on the rotating shaft, the running precision of the whole seal is guaranteed by a bearing 12, a nitrogen outlet 9 is designed on the magnetic liquid seal seat 7, a feedback valve is installed on the upper portion of the magnetic liquid seal seat, the nitrogen pressure entering from a nitrogen inlet 8 on the labyrinth seal seat 3 can be adjusted according to the internal pressure of the conveyor, and the input pressure of the nitrogen is guaranteed to be always larger than the internal pressure of the conveyor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a horizontal screw conveyer is with combination sealing device which characterized in that: the spiral conveyer comprises a short shaft sleeve (1) and a long shaft sleeve (2), a labyrinth seal seat (3) and a labyrinth seal sleeve (4) which are matched with each other are arranged between the short shaft sleeve (1) and the long shaft sleeve (2), the short shaft sleeve (1), the long shaft sleeve (2), the labyrinth seal seat (3) and the labyrinth seal sleeve (4) are all sleeved on the outer side of a rotating shaft of the spiral conveyer, a packing box (5) is sleeved on the outer side of the short shaft sleeve (1), a carbon fiber packing (6) is arranged between the inner side of the packing box (5) and the outer side of the short shaft sleeve (1), a magnetic liquid seal seat (7) is sleeved on the outer side of the long shaft sleeve (2), a nitrogen inlet (8) is arranged at the top end of the labyrinth seal seat (3), a nitrogen outlet (9) is arranged at the top end of the magnetic liquid seal seat (7), a gland (10) sleeved on the outer side of the long shaft sleeve (2) is arranged on one side, far away from the labyrinth seal seat (3), of the magnetic liquid seal seat (7), all be equipped with skeleton oil blanket (11) between magnetic fluid seal seat (7) and gland (10) and major axis cover (2), rotate through bearing (12) of symmetric distribution between magnetic fluid seal seat (7) and major axis cover (2) and be connected.
2. The combined sealing device for the horizontal screw conveyor according to claim 1, wherein: two sets of the symmetry is equipped with packing ring (13) between bearing (12), and is two sets of be equipped with between packing ring (13) and be first magnetic pole (14), second magnetic pole (15) and third magnetic pole (16) that the equidistance distributes, be equipped with first permanent magnet (17) between first magnetic pole (14) and second magnetic pole (15), be equipped with second permanent magnet (18) between second magnetic pole (15) and third magnetic pole (16).
3. The combined sealing device for the horizontal screw conveyor according to claim 2, wherein: the long shaft sleeve (2) is provided with a shaft retainer ring (19) matched with the bearing (12) on the outer side, the first magnetic pole (14), the second magnetic pole (15) and the third magnetic pole (16) are provided with first sealing rings (20) on the outer sides, and the magnetic liquid sealing seat (7) is fixedly connected with the gland (10) through hexagon socket head cap bolts.
4. The combined sealing device for the horizontal screw conveyor according to claim 1, wherein: the packing box is characterized in that a cooling water inlet (21) is formed in the bottom end of the packing box (5), a cooling water outlet (22) communicated with the cooling water inlet (21) is formed in the top end of the packing box (5), and the packing box (5) is fixedly connected with the labyrinth seal seat (3) through an inner hexagonal bolt.
5. The combined sealing device for the horizontal screw conveyor according to claim 1, wherein: labyrinth seal seat (3) inboard is equipped with first annular tooth (23) that are the equidistance and distribute to form first order labyrinth seal with the auger delivery pivot, labyrinth seal cover (4) inboard is equipped with second annular tooth (24) that are the equidistance and distribute to form second level labyrinth seal with labyrinth seal seat (3), labyrinth seal seat (3) are through hexagon socket head cap screw and magnetic liquid seal seat (7) fixed connection.
6. The combined sealing device for the horizontal screw conveyor according to claim 1, wherein: one side that magnetic fluid seal receptacle (7) is close to labyrinth seal seat (3) is equipped with second sealing washer (25), one side that labyrinth seal seat (3) are close to stuffing box (5) is equipped with third sealing washer (26), one side that stuffing box (5) kept away from labyrinth seal seat (3) is equipped with fourth sealing washer (27), long axle sleeve (2) inboard is equipped with fifth sealing washer (28), stub axle sleeve (1) inboard is equipped with sixth sealing washer (29).
7. The combined sealing device for the horizontal screw conveyor according to claim 1, wherein: the short shaft sleeve (1), the labyrinth sealing sleeve (4) and the long shaft sleeve (2) are fixedly connected with a rotating shaft of the spiral conveyer through a first set screw (30), a second set screw (31) and a third set screw (32) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322634.5A CN114087368A (en) | 2021-11-09 | 2021-11-09 | Combined sealing device for horizontal screw conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111322634.5A CN114087368A (en) | 2021-11-09 | 2021-11-09 | Combined sealing device for horizontal screw conveyor |
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| Publication Number | Publication Date |
|---|---|
| CN114087368A true CN114087368A (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111322634.5A Pending CN114087368A (en) | 2021-11-09 | 2021-11-09 | Combined sealing device for horizontal screw conveyor |
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| CN (1) | CN114087368A (en) |
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| CN213628880U (en) * | 2020-04-10 | 2021-07-06 | 无锡全世全流体科技有限公司 | Magnetic liquid sealing device for polymerization reaction kettle |
| CN113187897A (en) * | 2021-06-18 | 2021-07-30 | 北京交通大学 | Magnetic liquid seal and labyrinth seal combined sealing device |
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2021
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Application publication date: 20220225 |