CN115143764A - Feeding sealing structure and rotary dryer - Google Patents
Feeding sealing structure and rotary dryer Download PDFInfo
- Publication number
- CN115143764A CN115143764A CN202210600057.XA CN202210600057A CN115143764A CN 115143764 A CN115143764 A CN 115143764A CN 202210600057 A CN202210600057 A CN 202210600057A CN 115143764 A CN115143764 A CN 115143764A
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- friction sleeve
- packing
- stuffing
- air
- ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 239000000112 cooling gas Substances 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 71
- 239000000945 filler Substances 0.000 claims description 33
- 239000004519 grease Substances 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 18
- 230000001050 lubricating effect Effects 0.000 claims description 16
- 210000004907 gland Anatomy 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- 230000003068 static effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/008—Seals, locks, e.g. gas barriers or air curtains, for drying enclosures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a feeding sealing structure, which comprises a friction sleeve, a sealing assembly and an air cooling assembly, wherein the friction sleeve is fixedly connected with a rotary main body of a rotary dryer; the air cooling assembly is arranged on the outer wall of the friction sleeve and used for blowing cooling air to the outer wall of the friction sleeve so as to cool the friction sleeve. The sealing structure is simple and compact, has ingenious design and few parts, and reduces the manufacturing cost; the air cooling component is directly adopted to sweep the outer wall of the friction sleeve, the heat generated by friction on the inner wall of the friction sleeve is taken away, the air cooling temperature of the friction sleeve is realized, the air cooling component is simple and convenient to set, the public engineering is simple to match, the manufacturing cost is further reduced, the cooling gas of the air cooling component directly acts on a heating component of the friction sleeve, and the cooling effect is good. The invention provides a rotary dryer which comprises a rotary main body, a feeding shell and the feeding sealing structure.
Description
Technical Field
The invention relates to the field of industrial production equipment, in particular to a feeding sealing structure and a rotary dryer.
Background
At present, steam rotary dryers are mostly used for the production of chemical powder materials such as PPE (polyphenylene ether), HDPE (high density polyethylene), PTA (purified terephthalic acid), PPS (resin materials), polyoxymethylene, and the like. The feeding sealing structure of the steam rotary dryer is a water cooling structure, a cooling water jacket arranged on the feeding sealing structure is directly contacted with the inner diameter surface of the filler, and the dynamic and static friction surfaces are positioned on the outer diameter surface of the filler, so that the problems of poor heat dissipation effect, complex public engineering matching and high manufacturing cost exist.
Disclosure of Invention
The invention aims to provide a feeding sealing structure and a rotary dryer, and aims to solve the problems that in the existing feeding sealing structure, a cooling water jacket is directly contacted with the inner diameter surface of a filler, but dynamic and static friction surfaces are positioned on the outer diameter surface of the filler, so that the heat dissipation effect is poor, the public engineering matching is complex, and the manufacturing cost is high.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a feeding sealing structure, which comprises:
the friction sleeve is fixedly connected with a rotary main body of the rotary dryer so as to rotate along with the rotary main body;
the sealing assembly comprises a stuffing box and stuffing, the stuffing box is fixedly arranged on a feeding shell of the rotary dryer and is positioned at the inner ring of the friction sleeve, an annular stuffing cavity is formed between the outer wall of the stuffing box and the inner wall of the friction sleeve, the stuffing is filled in the stuffing cavity, opening parts at two ends of the stuffing cavity are respectively provided with a stuffing pressing plate and a stuffing pressing cover, and the stuffing can generate friction sealing with the inner wall of the friction sleeve in a rotating state;
the air cooling assembly is arranged on the feeding shell and used for blowing cooling air to the outer wall of the friction sleeve so as to cool the friction sleeve.
Optionally, the stuffing pressing plate is arranged at one end of the stuffing box close to the rotating body, and the stuffing pressing cover is arranged at the other end of the stuffing box;
the filler comprises a square filler and a V-shaped filler, the square filler is filled at one end, close to the filler pressing plate, of the annular filler cavity, and the V-shaped filler is filled between the square filler and the filler pressing cover.
Optionally, the sealing assembly further includes an air distribution ring, and the air distribution ring is disposed in the packing cavity and located between the square packing and the V-shaped packing;
the air inlet of the air distribution ring is communicated with the sealed air ring cavity through the sealed air hole, and the sealed air ring cavity is used for being externally connected with a sealed air source.
Optionally, an airtight jacket is disposed on the outer wall of the feeding shell, one end of the airtight jacket is used for connecting the sealed air source, and the other end of the airtight jacket is connected to the sealed air ring cavity.
Optionally, the seal assembly further includes an oil distribution ring, which is disposed in the packing cavity and sandwiched between the V-shaped packing and the V-shaped packing;
the packing box is provided with a lubricating grease pore channel, an oil inlet of the oil distribution ring is connected with one end of the lubricating grease pore channel, and the other end of the lubricating grease pore channel is externally connected with a lubricating grease supply device through a grease pipeline.
Optionally, the feeding device further comprises a bearing support, one end of the bearing support is fixed on the shell flange of the feeding shell, and the other end of the bearing support extends to the outer ring of the friction sleeve and is rotatably connected with the friction sleeve through a bearing.
Optionally, the bearing is a disc bearing, an outer ring of the disc bearing is fixedly connected with the friction sleeve, and an inner ring of the disc bearing is fixedly connected with the bearing support.
Optionally, the pressure bar further comprises a flexible pressure bar assembly, and the flexible pressure bar assembly comprises:
one end of the spring is connected with the packing gland;
and one end of the pressure lever is connected with the other end of the spring, the other end of the pressure lever penetrates through the shell flange and is in threaded connection with the shell flange, and the pressing force of the spring on the packing gland can be adjusted by rotating the pressure lever.
Optionally, the air cooling assembly includes:
the cooling gas ring pipe is arranged on the bearing support, and an air inlet of the cooling gas ring pipe is connected with a cooling gas source;
and one end of the air outlet pipe is connected with the cooling air annular pipe, and the other end of the air outlet pipe is close to the outer wall of the friction sleeve so as to blow cooling air to the outer wall of the friction sleeve.
Meanwhile, the invention provides a rotary dryer which comprises a rotary main body, a feeding shell and the feeding sealing structure, wherein the feeding sealing structure is arranged between the feeding shell and the rotary main body.
Compared with the prior art, the invention has the following technical effects:
according to the feeding sealing structure provided by the invention, the friction sleeve is fixed on the rotary main body of the rotary dryer and rotates along with the rotary main body, the sealing structure is arranged on the feeding shell of the rotary dryer and keeps static along with the feeding shell, the rotary main body keeps rotating in the process that the feeding shell feeds materials to the rotary main body, and the dynamic and static friction surfaces are formed by the filler in the sealing structure and the inner ring of the friction sleeve, so that sealing is realized, and the leakage of materials from the space between the feeding shell and the friction sleeve is avoided. The sealing structure is simple and compact, has ingenious design and few parts, and reduces the manufacturing cost; the air cooling component is directly adopted to sweep the outer wall of the friction sleeve, the heat generated by friction on the inner wall of the friction sleeve is taken away, the air cooling temperature reduction of the friction sleeve is realized, the air cooling component is simple and convenient to set, the public engineering matching is simple, and the manufacturing cost can be further reduced; and the cooling gas of the air cooling assembly directly acts on the heating component of the friction sleeve, so that the cooling effect is good, and the sealing performance and the reliability of the feeding structure can be guaranteed.
The rotary dryer provided by the invention can effectively ensure the feeding tightness by adopting the feeding sealing structure, and is not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a feed sealing structure disclosed in the embodiment of the present invention.
Wherein the reference numerals are:
1. a feed housing; 2. a housing flange; 3. a bearing support; 4. a flexible compression bar assembly; 5. a cooling gas ring pipe; 6. a packing gland; 7. a disc bearing; 8. a connecting seat; 9. a friction sleeve; 10. a packing press plate; 11. square filler; 12. a stuffing box; 13. a gas distribution ring; 14. a V-shaped filler; 15. an oil separating ring; 16. a swivel body; 17. an airtight jacket; 18. the gas ring cavity is sealed.
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.
The invention aims to provide a feeding sealing structure which has the advantages of simple structure, less public engineering matching, good sealing effect and long filler service life and can solve the problems of poor heat dissipation effect, complex public engineering matching and high manufacturing cost caused by the fact that a cooling water jacket is directly contacted with the inner diameter surface of a filler and dynamic and static friction surfaces are positioned on the outer diameter surface of the filler in the conventional feeding sealing structure.
The invention also aims to provide a rotary dryer adopting the feeding sealing structure.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1, the present embodiment provides a feeding sealing structure, which mainly includes a friction sleeve, a sealing assembly and an air cooling assembly, wherein the friction sleeve 9 is fixedly connected to a rotary main body 16 of a rotary dryer so as to rotate with the rotary main body 16; the sealing assembly comprises a stuffing box 12 and stuffing, the stuffing box 12 is fixedly arranged on the feeding shell 1 of the rotary dryer and is positioned at the inner ring of the friction sleeve 9, an annular stuffing cavity is formed between the outer wall of the stuffing box 12 and the inner wall of the friction sleeve 9, the stuffing cavity is filled with the stuffing, the opening parts at two ends of the stuffing cavity are respectively provided with a stuffing pressing plate 10 and a stuffing pressing cover 6, and the stuffing can generate friction sealing with the inner wall of the friction sleeve 9 in a rotating state; the air cooling assembly is disposed on the feeding housing 1 and used for blowing cooling air to the outer wall of the friction sleeve 9 to cool the friction sleeve 9.
In the embodiment, the stuffing pressing plate 10 is arranged at one end of the stuffing box 12 close to the rotating body 16, and the stuffing pressing cover 6 is arranged at the other end of the stuffing box 12; the packing comprises square packing 11 and V-shaped packing 14, the square packing 11 is filled at one end of the annular packing cavity close to the packing press plate 10, and the V-shaped packing 14 is filled between the square packing 11 and the packing press cover 6. The square filler 11 is preferably a high-strength woven filler with self-lubrication; the V-shaped packing 14 is preferably a cloth-sandwiched rubber.
In this embodiment, the sealing assembly further includes a gas distribution ring 13, and the gas distribution ring 13 is disposed in the packing cavity and located between the square packing 11 and the V-shaped packing 14; a sealed air ring cavity 18 is formed between the stuffing box 12 and the feeding shell 1, a sealed air duct is formed in the stuffing box 12, an air inlet of the air distribution ring 13 is communicated with the sealed air ring cavity 18 through the sealed air duct, and the sealed air ring cavity 18 is used for being externally connected with a sealed air source. The outer wall of the feeding shell 1 is provided with an airtight jacket 17, one end of the airtight jacket 17 is used for connecting a sealed air source, and the other end is connected with a sealed air ring cavity 18. The airtight jacket 17 is preferably a half-pipe structure in sealed butt joint with the outer wall of the feeding shell 1, the feeding shell 1 is integrally a cylindrical barrel, the half-pipe structure is arranged along the axial direction of the feeding shell 1, one end of the half-pipe structure is an inlet of a sealer for connecting a sealed air source, the other end of the half-pipe structure is connected with a sealed air ring cavity 18, and sealed air enters the stuffing box 12 from the airtight jacket 17. The gas distribution ring 13 is provided with gas holes in radial direction, which can uniformly diffuse the sealing gas into the packing cavity.
In this embodiment, the seal assembly further includes an oil distribution ring 15, and the oil distribution ring 15 is disposed in the packing cavity and sandwiched between the V-shaped packing 14 and the V-shaped packing 14; the stuffing box 12 is provided with a lubricating grease pore channel, an oil inlet of the oil distribution ring 15 is connected with one end of the lubricating grease pore channel, the other end of the lubricating grease pore channel is a lubricating grease inlet, and the lubricating grease inlet is externally connected with a lubricating grease supply device through a grease pipeline. So far, the sealing structure in the packing cavity is a component of V-shaped packing 14+ oil separating ring 15+ V-shaped packing 14+ gas separating ring 13+ square-shaped packing 11, that is, in the packing cavity, from left to right, the following are sequentially performed: v-shaped packing 14, oil separating rings 15, V-shaped packing 14, gas separating rings 13 and square packing 11.
In this embodiment, still include bearing bracket 3, on bearing bracket 3's one end was fixed in the casing flange 2 of feeding casing 1, bearing bracket 3's the other end extended to the outer lane of friction sleeve 9 to be connected with friction sleeve 9 through the bearing is rotated.
In this embodiment, the bearing is a disc bearing 7, an outer ring of the disc bearing 7 is fixedly connected with the friction sleeve 9, and an inner ring of the disc bearing 7 is fixedly connected with the bearing support 3.
In the embodiment, the drying machine further comprises a flexible pressure rod assembly 4, the flexible pressure rod assembly 4 comprises a spring and a pressure rod, one end of the spring is connected with the packing gland 6, one end of the pressure rod is connected with the other end of the spring, the other end of the pressure rod penetrates through the shell flange 2 and is in threaded connection with the shell flange 2, the pressure of the pressure rod on the spring can be adjusted by rotating the pressure rod, then the pressing force of the spring on the packing gland 6 is changed, particularly in the operation process of the drying machine, due to continuous friction between the friction sleeve 9 and the packing, the packing can be abraded, the setting of the spring can adjust the pressing force of the packing gland 6 on the packing in real time, the sealing failure caused by the packing abrasion can be compensated, the packing can be ensured to be always in a compressed state, and further the long-term performance of the sealing performance between the packing and the friction sleeve 9 can be ensured.
In this embodiment, the air-cooling assembly includes a cooling gas loop pipe 5 and a gas outlet pipe, the cooling gas loop pipe 5 may be disposed on the bearing support 3, the feeding housing 1 and other static components, for example, on the bearing support 3, and a gas inlet of the cooling gas loop pipe 5 is connected to a cooling gas source; one end of the air outlet pipe is connected with the cooling air ring pipe 5, and the other end of the air outlet pipe is close to the outer wall of the friction sleeve 9 so as to blow cooling air to the outer wall of the friction sleeve 9. The cooling gas source adopts a conventional nitrogen gas source and the like, and can continuously supply cooling gas such as nitrogen gas and the like into the cooling gas loop pipe 5.
Firstly, mounting a bearing support 3 and a flexible pressure lever assembly 4 on a shell flange 2; the disc bearing 7, the connecting seat 8 and the friction sleeve 9 are assembled into a whole and then are mounted on a rotary main body 16 (the rotary main body can also be called as an equipment main machine). Then, the packing gland 6, the V-shaped packing 14, the oil separating ring 15, the gas separating ring 13, the square packing 11, the packing press plate 10 and the packing box 12 are assembled into a whole and then are mounted on the feeding shell 1. Finally, the feed housing 1 is pushed into the swivel body 16 until the bearing support 3 abuts and is connected to the inner ring of the disc bearing 7. Finally the cooling collar 5 is mounted to the bearing support 3. The flexible compression bar component 4 can adjust the tightness of the filler in the filler cavity and has a damping effect. In the structure, the bearing support 3, the flexible pressure rod assembly 4, the cooling gas ring pipe 5, the packing gland 6, the inner ring of the disc bearing 7, the packing pressure plate 10, the square packing 11, the packing box 12, the gas distribution ring 13, the V-shaped packing 14, the oil distribution ring 15 and the feeding shell 1 are kept in a static state, the friction sleeve 9, the connecting seat 8 and the outer ring of the disc bearing 7 rotate together with the rotary main body 16 (the rotary main body can also be called as an equipment host), the friction surface is the inner wall of the friction sleeve 9, and the cooling gas discharged from the cooling gas ring pipe 5 continuously sweeps the outer wall of the friction sleeve 9 to achieve the purpose of cooling the friction sleeve 9.
As shown in fig. 1, during production operation of the rotating body 16 (the rotating body may also be referred to as "equipment main unit"), cooling gas, sealing gas, and grease are introduced into the cooling gas pipe 5, the airtight jacket 17, and the inlet of the grease passage, respectively. The square packing 11 is used for isolating most materials, and sealing gas passes through an airtight jacket 17 of the feeding shell 1, passes through the packing box 12 and forms an air-tight environment through the gas distribution ring 13, and is used for preventing the materials leaking through the square packing 11 and preventing lubricating grease from contacting with the materials. The lubricating grease passes through the stuffing box 12 and reaches a dynamic and static friction surface (namely a contact surface of the stuffing and the inner wall of the friction sleeve 9) through the oil separating ring 15, so that the friction between the V-shaped stuffing 14 and the friction sleeve 9 is reduced, and meanwhile, the sealing of materials is formed. The cooling air sweeps the outer wall of the friction sleeve 9 through the cooling air ring pipe 5, takes away heat generated by friction between the V-shaped packing 14 and the friction sleeve 9, and is used for maintaining the sealing environment of the friction surface.
Therefore, according to the feeding sealing structure provided by the embodiment, the friction sleeve is fixed on the rotary main body of the rotary dryer and rotates along with the rotary main body, the sealing structure is arranged on the feeding shell of the rotary dryer and keeps static along with the feeding shell, the rotary main body keeps rotating in the feeding process of the feeding shell to the rotary main body, dynamic and static friction surfaces are formed by the filler in the sealing structure and the inner ring of the friction sleeve, sealing is realized, and leakage of materials from the space between the feeding shell and the friction sleeve is avoided. The sealing structure is simple and compact, the design is ingenious, the parts are few, and the manufacturing cost is reduced; the air cooling component is directly adopted to sweep the outer wall of the friction sleeve, the heat generated by friction on the inner wall of the friction sleeve is taken away, the air cooling temperature reduction of the friction sleeve is realized, the air cooling component is simple and convenient to set, the public engineering matching is simple, and the manufacturing cost can be further reduced; and the cooling gas of the air cooling assembly directly acts on the heating component of the friction sleeve, so that the cooling effect is good, and the sealing performance and the reliability of the feeding structure can be guaranteed.
Example two
This embodiment provides a rotary dryer, including main part 16, feeding casing 1 and as above feeding seal structure, feeding seal structure sets up between feeding casing 1 and main part 16, and specific structure, mounting means and theory of operation refer to above-mentioned embodiment one, and no longer repeated here. The feeding shell 1 is cylindrical, and a packing auger is arranged in the feeding shell to convey materials.
The rotary dryer provided by the embodiment adopts the feeding sealing structure in the first embodiment, so that the feeding sealing performance can be effectively guaranteed, and the description is omitted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A feed seal arrangement, comprising:
the friction sleeve is fixedly connected with a rotary main body of the rotary dryer so as to rotate along with the rotary main body;
the sealing assembly comprises a stuffing box and stuffing, the stuffing box is fixedly arranged on a feeding shell of the rotary dryer and is positioned at the inner ring of the friction sleeve, an annular stuffing cavity is formed between the outer wall of the stuffing box and the inner wall of the friction sleeve, the stuffing is filled in the stuffing cavity, opening parts at two ends of the stuffing cavity are respectively provided with a stuffing pressing plate and a stuffing pressing cover, and the stuffing can generate friction sealing with the inner wall of the friction sleeve in a rotating state;
the air cooling assembly is arranged on the feeding shell and used for blowing cooling air to the outer wall of the friction sleeve so as to cool the friction sleeve.
2. A feed seal arrangement according to claim 1, wherein the packing platen is disposed at one end of the stuffing box proximate the swivel body and the packing gland is disposed at the other end of the stuffing box;
the filler comprises a square filler and a V-shaped filler, the square filler is filled at one end, close to the filler pressing plate, of the annular filler cavity, and the V-shaped filler is filled between the square filler and the filler pressing cover.
3. The feed seal arrangement of claim 2, wherein the seal assembly further comprises a gas distribution ring disposed within the packing cavity and between the square packing and the V-shaped packing;
the air inlet of the air distribution ring is communicated with the sealed air ring cavity through the sealed air hole, and the sealed air ring cavity is used for being externally connected with a sealed air source.
4. A feed seal structure according to claim 3, wherein the outer wall of the feed housing is provided with an airtight jacket having one end for connection to the source of sealing gas and the other end for connection to the sealing gas ring chamber.
5. The feed seal arrangement of claim 3, wherein the seal assembly further comprises an oil distribution ring disposed within the packing cavity and sandwiched between the V-packing and the V-packing;
the packing box is provided with a lubricating grease pore channel, an oil inlet of the oil distribution ring is connected with one end of the lubricating grease pore channel, and the other end of the lubricating grease pore channel is externally connected with a lubricating grease supply device through a grease pipeline.
6. The feeding sealing structure according to any one of claims 2 to 5, further comprising a bearing support, wherein one end of the bearing support is fixed on the housing flange of the feeding housing, and the other end of the bearing support extends to the outer ring of the friction sleeve and is rotatably connected with the friction sleeve through a bearing.
7. The feed seal structure of claim 6, wherein the bearing is a disc bearing, an outer ring of the disc bearing is fixedly connected with the friction sleeve, and an inner ring of the disc bearing is fixedly connected with the bearing support.
8. The feed seal arrangement of claim 6, further comprising a flexible strut assembly, the flexible strut assembly comprising:
one end of the spring is connected with the packing gland;
and one end of the pressure lever is connected with the other end of the spring, the other end of the pressure lever penetrates through the shell flange and is in threaded connection with the shell flange, and the pressing force of the spring on the packing gland can be adjusted by rotating the pressure lever.
9. The feed seal structure of claim 6, wherein the air cooling assembly comprises:
the cooling gas ring pipe is arranged on the bearing support, and an air inlet of the cooling gas ring pipe is connected with a cooling gas source;
and one end of the air outlet pipe is connected with the cooling air ring pipe, and the other end of the air outlet pipe is close to the outer wall of the friction sleeve so as to blow cooling air to the outer wall of the friction sleeve.
10. A rotary dryer comprising a rotary body, a feed housing and a feed seal arrangement as claimed in any one of claims 1 to 9, the feed seal arrangement being disposed between the feed housing and the rotary body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600057.XA CN115143764A (en) | 2022-05-27 | 2022-05-27 | Feeding sealing structure and rotary dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210600057.XA CN115143764A (en) | 2022-05-27 | 2022-05-27 | Feeding sealing structure and rotary dryer |
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| CN115143764A true CN115143764A (en) | 2022-10-04 |
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| CN202210600057.XA Pending CN115143764A (en) | 2022-05-27 | 2022-05-27 | Feeding sealing structure and rotary dryer |
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| CN212058213U (en) * | 2020-04-21 | 2020-12-01 | 嘉兴市三江浩嘉高分子材料科技有限公司 | Novel tail end filler of dryer |
| CN212339955U (en) * | 2020-06-02 | 2021-01-12 | 中国石油化工股份有限公司 | Energy-saving FCC catalyst roasting furnace |
| CN212536653U (en) * | 2020-09-02 | 2021-02-12 | 济南重工股份有限公司 | Compound feeding sealing device of mill |
| CN213361087U (en) * | 2020-09-15 | 2021-06-04 | 南通金通储能动力新材料有限公司 | Shaft end soft packing sealing device suitable for ternary precursor medium |
| CN213631469U (en) * | 2020-11-26 | 2021-07-06 | 江苏塑奇环保设备有限公司 | Padding sealing device for paddle dryer |
| CN216430499U (en) * | 2021-08-30 | 2022-05-03 | 天华化工机械及自动化研究设计院有限公司 | Floating discharge sealing structure of steam rotary dryer |
| CN217737855U (en) * | 2022-05-27 | 2022-11-04 | 天华化工机械及自动化研究设计院有限公司 | Feeding sealing structure and rotary dryer |
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| CN212339955U (en) * | 2020-06-02 | 2021-01-12 | 中国石油化工股份有限公司 | Energy-saving FCC catalyst roasting furnace |
| CN212536653U (en) * | 2020-09-02 | 2021-02-12 | 济南重工股份有限公司 | Compound feeding sealing device of mill |
| CN213361087U (en) * | 2020-09-15 | 2021-06-04 | 南通金通储能动力新材料有限公司 | Shaft end soft packing sealing device suitable for ternary precursor medium |
| CN213631469U (en) * | 2020-11-26 | 2021-07-06 | 江苏塑奇环保设备有限公司 | Padding sealing device for paddle dryer |
| CN216430499U (en) * | 2021-08-30 | 2022-05-03 | 天华化工机械及自动化研究设计院有限公司 | Floating discharge sealing structure of steam rotary dryer |
| CN217737855U (en) * | 2022-05-27 | 2022-11-04 | 天华化工机械及自动化研究设计院有限公司 | Feeding sealing structure and rotary dryer |
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