CN112747587B - Low-heating discharging sealing structure of central discharging rotary dryer - Google Patents
Low-heating discharging sealing structure of central discharging rotary dryer Download PDFInfo
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- CN112747587B CN112747587B CN202011588203.9A CN202011588203A CN112747587B CN 112747587 B CN112747587 B CN 112747587B CN 202011588203 A CN202011588203 A CN 202011588203A CN 112747587 B CN112747587 B CN 112747587B
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- bearing
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- 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
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Abstract
The utility model provides a center ejection of compact rotary dryer's low ejection of compact seal structure that generates heat, includes: the front sealing structure comprises a front sealing box body, a connecting bearing seat, a bearing flange, an equipment flange and a sealing sleeve, wherein the connecting bearing seat is connected with the bearing flange through a front bearing; the equipment flange is connected with the sealing sleeve, a second sealing ring is arranged at the joint of the sealing sleeve and the equipment flange, and a front sealing filler is arranged between the front sealing box body and the sealing sleeve; the rear sealing structure comprises a rear sealing box body and a rear bearing seat, the rear sealing box body is connected with the discharge box end seat, and a third sealing ring is arranged at the joint of the rear sealing box body and the discharge box end seat; the rear bearing seat is connected with the discharge box end seat through a connecting support, and rear sealing filler is arranged between the rear sealing box body and a rear shaft sleeve arranged on the steam shaft.
Description
Technical Field
The invention relates to a central discharging rotary dryer, in particular to a low-heating discharging sealing structure of the central discharging rotary dryer.
Background
In the prior art, a discharging seal for a central discharging rotary dryer belongs to a single-bearing cantilever support rotating structure, the front and the rear seals are of an integral structure, the concentricity of a filler box body is difficult to adjust, the assembly gap between the box body and a shaft sleeve can be ensured only by depending on processing and assembly precision, the filler is easy to be worn eccentrically in the using process, the shaft sleeve is further abraded, the filler is heated, and the sealing leakage condition is caused; meanwhile, materials and carrier gas mix and raise dust in the discharge box body, so that the lubricating environment at the sealing surface is severe.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a low-heating discharging sealing structure of a central discharging rotary dryer.
In order to achieve the above object, the present invention provides a low-heat-generation discharge sealing structure of a central discharge rotary dryer, wherein the low-heat-generation discharge sealing structure comprises:
the front sealing structure is arranged on a discharging box body of the central discharging rotary dryer corresponding to the material channel and comprises a front sealing box body, a connecting bearing seat, a bearing flange, an equipment flange and a sealing sleeve, wherein the connecting bearing seat is connected with the bearing flange through a front bearing; the equipment flange is connected with the sealing sleeve, a second sealing ring is arranged at the joint of the sealing sleeve and the equipment flange, and a front sealing filler is arranged between the front sealing box body and the sealing sleeve;
the rear sealing structure is arranged on the discharging box body and is positioned at the tail end of a steam shaft of the central discharging rotary dryer, the rear sealing structure comprises a rear sealing box body and a rear bearing seat, the rear sealing box body is connected with a discharging box end seat, and a third sealing ring is arranged at the connection position of the rear sealing box body and the discharging box end seat; the rear bearing seat is connected with the discharge box end seat through a connecting support, and a rear sealing filler is arranged between the rear sealing box body and a rear shaft sleeve arranged on the steam shaft.
The low-heating discharge sealing structure of the central discharge rotary dryer is characterized in that the front sealing box body is provided with a nitrogen gas collecting ring, and nitrogen gas is provided for the front sealing filler through a hole ring of the nitrogen gas collecting ring to form a flame-retardant airtight space.
The low-heating discharging sealing structure of the central discharging rotary dryer is characterized in that the front sealing filler comprises a V-shaped filler and a front-shaped filler, and the V-shaped filler and the front-shaped filler are respectively abutted with the front sealing box body and the sealing sleeve to form a sealing surface.
In the low-heating discharge sealing structure of the central discharge rotary dryer, the ring of the nitrogen gas collecting ring is located between the V-shaped packing and the front-shaped packing.
Foretell center ejection of compact rotary dryer's ejection of compact seal structure that generates heat lowly, wherein, preceding sealing box still is provided with cooling water ring chamber, and cooling water passes through cooling water ring chamber cooling friction surface between V type filler and the preceding sealing box.
The low-heating discharging sealing structure of the central discharging rotary dryer is characterized by further comprising a front packing gland corresponding to the front sealing packing, the front packing gland is mounted on the bearing flange through a connecting rod, and the connecting rod adjusts pressing force of the front packing gland on the V-shaped packing and the front-shaped packing.
Foretell center ejection of compact rotary dryer's ejection of compact seal structure that generates heat hangs down, wherein, be provided with the jackscrew seat on the back sealed letter body, install the jackscrew on the jackscrew seat, the back sealed letter body passes through the jackscrew aligning.
The low-heating discharging sealing structure of the central discharging rotary dryer is characterized in that a graphite sliding bearing is arranged on the inner side of the rear bearing seat, and the graphite sliding bearing is in contact with a front shaft sleeve on the steam shaft to play a supporting and positioning role.
The low-heating discharging sealing structure of the central discharging rotary dryer is characterized in that the rear sealing packing is a square packing, and the square packing is in contact with the rear shaft sleeve to form a sealing surface.
The low-heating discharging sealing structure of the central discharging rotary dryer is characterized in that the rear sealing box body is provided with a rear packing gland, and the rear packing gland regulates pressing force on the square packing through bolts.
The invention has the technical effects that:
the central discharging rotary dryer has the advantages of simple structure, accurate installation and positioning of the sealing component of the low-heating discharging sealing structure, low heating value and high cooling efficiency. The front sealing box body and the rear sealing box body are of a single structure, the welding amount is small, the manufacturing is simple, and the use process is not easy to deform; the rear sealing box body is radially provided with an adjusting top screw seat which can adjust the clearance of the stuffing box; the double bearings are used as operation supporting points, so that the gap between the sealing box body and the sealing sleeve can be accurately controlled, and the filler is more uniformly stressed in the operation process; the front end sealing cantilever is relatively short, the bearing bears the weight of the sealing box body less, and the service life of the bearing is longer; the rear end seal is a small-diameter box structure, the friction surface is small, and material leakage and heat productivity can be effectively reduced; the carrier gas and the discharged material in the discharging box are separated, so that the lubricating environment of a sealing surface can be protected, and material leakage and heat productivity are reduced; the V-shaped packing with the front-end sealing structure and the dryer synchronously rotate, are easy to radiate heat, can be directly cooled by arranging the cooling water jacket on the front sealing box body, and have the characteristic of high cooling efficiency.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a front sealing structure according to an embodiment of the present invention;
fig. 3 is a schematic view of a rear sealing structure according to an embodiment of the present invention.
Wherein the reference numerals
100 front sealing structure
200 rear sealing structure
1 bearing flange
2 front bearing
3 connecting bearing seat
4 front packing gland
5V type filler
6-hole ring
7 front sealing packing
8 front sealing box
9 first seal ring
10 packing press ring
11 second seal ring
12 sealing sleeve
13 equipment flange
14 discharge box
15 third seal ring
16 rear sealing box
17 jackscrew
18 rear sealing packing
19 back packing gland
20 connecting bracket
21 rear bearing seat
22 graphite sliding bearing
23 front axle sleeve
24 rear axle sleeve
25 steam shaft
26 Material channel
27 discharge hole
28 carrier gas diversion channel
29 discharge box flange
30 connecting rod
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the present invention. The low-heating discharge sealing structure of the central discharge rotary dryer can prevent filler heating caused by uneven stress of the filler and pollution of lubricating environment due to dust raised by mixing of materials and carrier gas in the operation process, a steam shaft 25 of the central discharge rotary dryer takes double bearings as supporting points, a filler box body can be adjusted and centered, the diameter of a friction surface is small, and friction heating between the shaft sleeve and the filler is small under the same working condition. The discharging box 14 of the central discharging rotary dryer is respectively provided with a material channel 26 and a carrier gas diversion channel 28. The material and the carrier gas can be separated, dust entrainment in the discharging box body is reduced, failure caused by the fact that lubricating grease is mixed into the material is avoided, and therefore the heat productivity of the friction surface is reduced. This low ejection of compact seal structure that generates heat includes: the front sealing structure 100 is arranged on a discharging box body of the central discharging rotary dryer corresponding to the material channel 26, the front sealing structure 100 comprises a front sealing box body 8, a connecting shaft bearing seat 3, a bearing flange 1, an equipment flange 13 and a sealing sleeve 12, the connecting shaft bearing seat 3 is connected with the bearing flange 1 through a front bearing 2, the front sealing box body 8 is arranged between the connecting shaft bearing seat 3 and a discharging box flange 29, the front sealing box body 8 is connected with the connecting shaft bearing seat 3 through a bolt, the front bearing 2 is connected with the connecting shaft bearing seat 3 and the bearing flange 1 through a bolt, and a spigot structure is arranged on a connecting surface for positioning; a first sealing ring 9 is arranged at the joint of the front sealing box body 8 and the discharging box flange 29; the equipment flange 13 is connected with the sealing sleeve 12 through bolts, a spigot structure is arranged on a connecting surface for positioning, a second sealing ring 11 is arranged at the connecting part of the sealing sleeve 12 and the equipment flange 13, and a front sealing filler 7 is arranged between the front sealing box body 8 and the sealing sleeve 12; the rear sealing structure 200 is arranged on the discharging box body and positioned at the tail end of a steam shaft 25 of the central discharging rotary dryer, and comprises a rear sealing box body 16 and a rear bearing seat 21, the rear sealing box body 16 is connected with the end seat of the discharging box, the diameter of the friction surface of the rear sealing box body 16 is slightly larger than that of the central pipe, so that the friction area and the linear velocity of the friction surface can be effectively reduced, and the friction heating is reduced; a third sealing ring 15 is arranged at the joint of the rear sealing box body 16 and the discharge box end seat; the rear bearing seat 21 is connected with the discharge box end seat through a connecting bracket 20, the rear bearing seat 21 can be connected with the connecting bracket 20 through a bolt, and the connecting bracket 20 can be connected with the discharge box end seat through a bolt; and a rear sealing filler 18 is arranged between the rear sealing box body 16 and a rear shaft sleeve 24 arranged on a steam shaft 25 of the central discharging rotary dryer. The first 9, second 11 and third 15 seals are preferably all "O" seals.
Referring to fig. 2, fig. 2 is a schematic view of a front sealing structure 100 according to an embodiment of the present invention. In this embodiment, the front sealing box body 8 is provided with a nitrogen gas collecting ring, and nitrogen gas is provided to the front sealing filler 7 through the hole ring 6 of the nitrogen gas collecting ring to form a flame-retardant airtight space environment. Preceding gland packing 7 includes that V type packs 5 and the place ahead shape and packs, V type pack 5 and the place ahead shape pack respectively with preceding gland box 8 and 12 butt of seal cover form sealed face, seal cover 12 passes through the bolt and links to each other with packing clamping ring 10, and packing clamping ring 10 plays the circumference positioning action to preceding gland packing 7, and V type packs 5 and desiccator synchronous revolution, easily dispels the heat and can set up cooling water jacket direct cooling in the front on gland box 8. And the hole ring 6 of the nitrogen gas collecting ring is positioned between the V-shaped packing 5 and the front-shaped packing. Preceding sealing box 8 still is provided with cooling water ring chamber, and the cooling water accessible cooling water ring chamber cooling friction surface between V type filler 5 and preceding sealing box 8. The front sealing structure 100 further comprises a front packing gland 4 arranged corresponding to the front sealing packing 7, the front packing gland 4 is mounted on the bearing flange 1 through a connecting rod 30, one end of the connecting rod 30 is mounted on the bearing flange 1, the other end of the connecting rod 30 is connected with the front packing gland 4, and pressing force of the front packing gland 4 on the V-shaped packing 5 and the front packing can be adjusted through the connecting rod 30.
Referring to fig. 3, fig. 3 is a schematic view of a rear sealing structure 200 according to an embodiment of the present invention. This embodiment be provided with the jackscrew seat on the back sealed letter 16, install jackscrew 17 on the jackscrew seat, back sealed letter 16 accessible jackscrew 17 carries out the aligning to radial adjustment stuffing box clearance avoids back sealed 18 eccentric wear. The graphite sliding bearing 22 is arranged on the inner side of the rear bearing seat 21, is mounted on the front shaft sleeve 23 and can axially slide on the front shaft sleeve 23, and the graphite sliding bearing 22 is in contact with the front shaft sleeve 23 on the steam shaft 25 to play a supporting and positioning role. The rear packing 18 is a square packing and is arranged inside the rear packing box 16, and the square packing is in contact with the rear shaft sleeve 24 arranged on the steam shaft 25 to form a sealing surface. The rear packing gland 19 is arranged on the rear packing box body 16, the rear packing gland 19 is connected with the rear packing box body 16 through bolts, and the pressing force of the rear packing gland 19 on the square packing can be adjusted through the bolts.
When the equipment is operated, materials flow from the material channel 26 to the discharge port 27 in the flow direction of the discharge box 14, and the first sealing ring 9 can realize the sealing between the front sealing box body 8 and the discharge box flange 29; the second sealing ring 11 can realize the sealing between the sealing sleeve 12 and the equipment flange 13; the third sealing ring 15 can realize the sealing between the rear sealing box body 16 and the end seat of the discharging box; due to the adoption of a double-bearing supporting structure, the self-weight deformation of a cantilever support is avoided, the distance deviation between the rear sealing box body 16 and the rear shaft sleeve 24 is reduced, and the rear sealing packing 18 placed in the middle of the rear sealing box body is more uniformly stressed and generates less heat; the outer sealing structure of the discharging box 14 is a small-diameter structure, the concentricity of the rear sealing box body 16 and the rear shaft sleeve 24 can be adjusted through the jackscrew 17, the stress environment of the rear sealing filler 18 at the position is greatly improved, the heat productivity is reduced, and the sealing effect is better; the discharge box 14 is separated from the carrier gas diversion channel 28 and the material channel 26, so that the lubricating environment of the sealing surface can be protected, and material leakage and heat productivity are reduced.
The present invention is capable of other embodiments, and various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a center ejection of compact rotary dryer's low ejection of compact seal structure that generates heat which characterized in that includes:
the front sealing structure is arranged on a discharging box body of the central discharging rotary dryer corresponding to the material channel and comprises a front sealing box body, a connecting bearing seat, a bearing flange, an equipment flange and a sealing sleeve, wherein the connecting bearing seat is connected with the bearing flange through a front bearing; the equipment flange is connected with the sealing sleeve, a second sealing ring is arranged at the joint of the sealing sleeve and the equipment flange, and a front sealing filler is arranged between the front sealing box body and the sealing sleeve; and
the rear sealing structure is arranged on the discharging box body and is positioned at the tail end of a steam shaft of the central discharging rotary dryer, the rear sealing structure comprises a rear sealing box body and a rear bearing seat, the rear sealing box body is connected with a discharging box end seat, and a third sealing ring is arranged at the connection position of the rear sealing box body and the discharging box end seat; the rear bearing seat is connected with the discharge box end seat through a connecting bracket, and rear sealing filler is arranged between the rear sealing box body and a rear shaft sleeve arranged on the steam shaft;
wherein, preceding sealed letter body and back sealed letter body are the monomer structure respectively, radially be provided with the jackscrew seat on the back sealed letter body, install the jackscrew on the jackscrew seat, back sealed letter body passes through the jackscrew aligning is in order to adjust the stuffing box clearance, the back bearing frame inboard is provided with graphite slide bearing, graphite slide bearing with the epaxial preceding axle sleeve contact of vapour plays the support positioning effect, preceding bearing and graphite slide bearing are as the operation strong point, accurate control preceding sealed letter body with between the seal cover back sealed letter body with clearance between the back axle sleeve makes the operation in-process preceding gland packing and back gland packing atress are even.
2. The low heat emission discharge seal structure of a central discharge rotary dryer according to claim 1, wherein said front seal box is provided with a nitrogen gas gathering ring, and nitrogen gas is supplied to said front seal packing through an orifice ring of said nitrogen gas gathering ring to form a flame-retardant airtight space.
3. The low heat emission discharge seal structure of a central discharge rotary dryer of claim 2 wherein said front seal packing comprises a V-shaped packing and a forward shaped packing, said V-shaped packing and forward shaped packing abutting said front gland and said front gland respectively to form a sealing surface.
4. The low heat emission discharge seal configuration of a central discharge rotary dryer of claim 3 wherein said ring of nitrogen gathering rings is located between said V-shaped packing and forward shaped packing.
5. The low heat emission discharge seal structure of the central discharge rotary dryer according to claim 3 or 4, wherein the front seal box body is further provided with a cooling water annular cavity, and cooling water cools the friction surface between the V-shaped packing and the front seal box body through the cooling water annular cavity.
6. The low heat emission discharge seal structure of the central discharge rotary dryer according to claim 3 or 4, wherein the front seal structure further comprises a front packing gland disposed corresponding to the front packing, the front packing gland being mounted on the bearing flange through a connecting rod, the connecting rod adjusting a pressing force of the front packing gland against the V-shaped packing and the front packing.
7. The low heat emission discharge seal structure of the central discharge rotary dryer according to claim 1, wherein the rear seal packing is a square packing, and the square packing is in contact with the rear bushing to form a seal surface.
8. The low heat emission discharge seal structure of the central discharge rotary dryer according to claim 7, wherein a rear packing gland is provided on the rear packing box body, and the rear packing gland adjusts pressing force to the square packing through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588203.9A CN112747587B (en) | 2020-12-29 | 2020-12-29 | Low-heating discharging sealing structure of central discharging rotary dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011588203.9A CN112747587B (en) | 2020-12-29 | 2020-12-29 | Low-heating discharging sealing structure of central discharging rotary dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112747587A CN112747587A (en) | 2021-05-04 |
| CN112747587B true CN112747587B (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011588203.9A Active CN112747587B (en) | 2020-12-29 | 2020-12-29 | Low-heating discharging sealing structure of central discharging rotary dryer |
Country Status (1)
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|---|---|
| CN (1) | CN112747587B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0791553A (en) * | 1993-09-27 | 1995-04-04 | Sando Iron Works Co Ltd | Seal device for cylinder support shaft in cylinder dryer |
| CN2807170Y (en) * | 2005-05-16 | 2006-08-16 | 锦西化工机械(集团)有限责任公司 | Sealing device for feeding of rotary dryer |
| CN202418568U (en) * | 2011-12-31 | 2012-09-05 | 中航黎明锦西化工机械(集团)有限责任公司 | Sealing device for TA dryer |
| CN204512422U (en) * | 2015-03-20 | 2015-07-29 | 南京天华化学工程有限公司 | A kind of novel slurry dryer shaft end seal device |
| CN207728889U (en) * | 2018-04-18 | 2018-08-14 | 山东齐鲁华信实业股份有限公司 | Helical reactors shaft mechanical seal structure |
| CN110513485A (en) * | 2018-05-21 | 2019-11-29 | 天华化工机械及自动化研究设计院有限公司 | A kind of bellows sealing structure of revolving drum of multipurpose continuous drying equipment |
| CN209196128U (en) * | 2018-12-28 | 2019-08-02 | 无锡苏阳化工装备有限公司 | The horizontal machine of rake type dryer seals |
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2020
- 2020-12-29 CN CN202011588203.9A patent/CN112747587B/en active Active
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| CN112747587A (en) | 2021-05-04 |
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