CN220037448U - Shaft end sealing and pneumatic cleaning structure - Google Patents
Shaft end sealing and pneumatic cleaning structure Download PDFInfo
- Publication number
- CN220037448U CN220037448U CN202321629265.9U CN202321629265U CN220037448U CN 220037448 U CN220037448 U CN 220037448U CN 202321629265 U CN202321629265 U CN 202321629265U CN 220037448 U CN220037448 U CN 220037448U
- Authority
- CN
- China
- Prior art keywords
- lining ring
- sealing
- gap
- transmission shaft
- sealing seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 238000004140 cleaning Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 210000004907 gland Anatomy 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims 1
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 1
- 239000002360 explosive Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a shaft end sealing and pneumatic cleaning structure, and belongs to the technical field of horizontal kneaders. The structure comprises a sealing gland, a sealing seat, an outer lining ring, a middle lining ring and an inner lining ring. This axle head seals and pneumatic clearance structure can carry out effective sealing to the gap between drive shaft and this structure inboard to through leading in compressed air or nitrogen gas to interior lining ring cavity department, form the malleation in the gap between transmission shaft and this structure, blow out the gap with the material that gets into in the gap, play the effect of pneumatic clearance, avoid producing the potential safety hazard.
Description
Technical Field
The utility model belongs to the technical field of horizontal kneaders, and relates to a shaft end sealing and pneumatic cleaning structure.
Background
The horizontal kneader used in the explosive processing industry is mainly used for mixing and plasticizing inflammable and explosive materials with certain viscosity, and the interior of the kneader needs to be cleaned after each time of processing the materials; a small amount of materials always enter a sealing gap of a blade transmission shaft of the original horizontal kneader, and the cleaning is not easy. If the cleaning is not clean, potential safety hazards exist.
In order to solve the problem that a sealing gap of a transmission shaft of a horizontal kneader is difficult to clean, the utility model provides a shaft end sealing and pneumatic cleaning structure, which ensures the sealing of a shaft end and solves the problem that materials entering the sealing are difficult to clean.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a shaft end sealing and pneumatic cleaning structure.
The technical scheme of the utility model is as follows:
a shaft end sealing and pneumatic cleaning structure comprises a sealing gland 1, a sealing seat 2, an outer lining ring 3, a middle lining ring 4 and an inner lining ring 5.
The sealing seat 2 is of a cylindrical structure, a hole is formed in the center of the sealing seat, and the sealing seat is arranged on the transmission shaft 6; an inner lining ring 5, a middle lining ring 4 and an outer lining ring 3 are sequentially arranged between the inner surface of the sealing seat 2 and the outer surface of the transmission shaft 6 from inside to outside. The sealing gland 1 is of a stepped shaft structure, a hole is formed in the center of the sealing gland, and the sealing gland is sleeved on the transmission shaft 6 through the central hole; the outer side of the small shaft end of the sealing gland 1 is sleeved into a gap between the sealing seat 2 and the transmission shaft 6, and simultaneously the outer lining ring 3, the middle lining ring 4 and the inner lining ring 5 are extruded in the sealing seat 2. The number of the middle lining rings 4 is 3, and the middle lining rings are deformed after being extruded so as to play a role in sealing.
Annular grooves are formed in the inner surface and the outer surface of the inner lining ring 5, air inlets 7 are uniformly distributed in the annular grooves, and the annular grooves in the inner surface and the outer surface are communicated. During operation, compressed air or nitrogen is introduced into the annular groove of the inner lining ring 5, enters the air inlet 7, sequentially passes through the gap between the transmission shaft 6 and the inner lining ring 5 and the gap between the transmission shaft 6 and the sealing seat 2, and forms positive pressure in the gap, so that materials entering the gap are blown out of the gap, and the pneumatic cleaning function is realized.
The utility model has the beneficial effects that: the shaft end sealing and pneumatic cleaning structure can effectively seal the gap between the transmission shaft and the inner side of the structure, and form positive pressure in the gap between the transmission shaft and the structure by introducing compressed air or nitrogen into the cavity of the inner lining ring, so that materials entering the gap are blown out of the gap to play a role in pneumatic cleaning, and potential safety hazards are avoided.
Drawings
FIG. 1 is a schematic view of a kneader blade shaft end seal and pneumatic cleaning structure.
In the figure: 1, sealing a gland; 2, a sealing seat; 3, an outer lining ring; 4, a lining ring; 5 inner lining ring; 6, a transmission shaft; 7, an air inlet hole.
Detailed Description
The following detailed description of the utility model is further illustrated in conjunction with the examples and the accompanying drawings, but is not intended to limit the utility model.
The structure is applied to a horizontal kneader used in the explosive processing industry as an example. The sealing part of the shaft end of the paddle of the traditional horizontal kneader often extrudes materials, and the extruded materials are relatively troublesome to clean and inconvenient to clean. According to the utility model, the air inlet hole on the sealing device can be effectively utilized, compressed air or nitrogen is blown in, and the material entering the shaft end seal of the paddle of the horizontal kneader can be effectively cleaned by utilizing the pressure of air flow, and meanwhile, the material storage at the contact position of the side wall of the kneading cylinder and the kneading paddle is effectively purged, so that the problem of material cleaning is solved.
Referring to fig. 1, a shaft end sealing and pneumatic cleaning structure comprises a sealing gland 1, a sealing seat 2, an outer liner 3, a middle liner 4 and an inner liner 5.
The sealing seat 2 is of a cylindrical structure, a hole is formed in the center of the sealing seat, and the sealing seat is arranged on the transmission shaft 6; an inner lining ring 5, a middle lining ring 4 and an outer lining ring 3 are sequentially arranged between the inner surface of the sealing seat 2 and the outer surface of the transmission shaft 6 from inside to outside. The sealing gland 1 is of a stepped shaft structure, a hole is formed in the center of the sealing gland, and the sealing gland is sleeved on the transmission shaft 6 through the central hole; the outer side of the small shaft end of the sealing gland 1 is sleeved into a gap between the sealing seat 2 and the transmission shaft 6, and simultaneously the outer lining ring 3, the middle lining ring 4 and the inner lining ring 5 are extruded in the sealing seat 2. The number of the middle lining rings 4 is 3, and the middle lining rings are deformed after being extruded so as to play a role in sealing.
Annular grooves are formed in the inner surface and the outer surface of the inner lining ring 5, air inlets 7 are uniformly distributed in the annular grooves, and the annular grooves in the inner surface and the outer surface are communicated. During operation, compressed air or nitrogen is introduced into the annular groove of the inner lining ring 5, enters the air inlet 7, sequentially passes through the gap between the transmission shaft 6 and the inner lining ring 5 and the gap between the transmission shaft 6 and the sealing seat 2, and forms positive pressure in the gap, so that materials entering the gap are blown out of the gap, and the pneumatic cleaning function is realized.
Firstly, by compacting the sealing gland 1, the middle lining ring 4 deforms and expands under the extrusion action of the sealing gland 1, the sealing seat 2, the outer lining ring 3 and the inner lining ring 5, and the gap between the structure and the transmission shaft 6 is fully squeezed, so that shaft end sealing is realized.
Secondly, after the sealing seat 2 is pressed, the sealing seat 2, the middle lining ring 4 which is expanded by extrusion deformation, the inner lining ring 5 and the transmission shaft 6 jointly form an inner cavity and an outer cavity, and the outer cavity is communicated with the inner cavity through an air inlet 7. After compressed air or nitrogen is introduced into the outer cavity, the compressed air or nitrogen enters the inner cavity through the air inlet 7, positive pressure is formed in the cavity, positive pressure is also formed in a gap formed by the transmission shaft 6 and the inner lining ring 5, materials extruded into the gap are blown out of the gap, and materials at dead angles outside the gap can be purged completely, so that the pneumatic cleaning function is realized.
Claims (3)
1. The shaft end sealing and pneumatic cleaning structure is characterized by comprising a sealing gland (1), a sealing seat (2), an outer lining ring (3), a middle lining ring (4) and an inner lining ring (5);
the sealing seat (2) is of a cylindrical structure, a hole is formed in the center of the sealing seat, and the sealing seat is arranged on the transmission shaft; an inner lining ring (5), a middle lining ring (4) and an outer lining ring (3) are sequentially arranged between the inner surface of the sealing seat (2) and the outer surface of the transmission shaft from inside to outside; the sealing gland (1) is of a stepped shaft structure, a hole is formed in the center of the sealing gland, and the sealing gland is sleeved on the transmission shaft through the center hole; the outer side of the small shaft end of the sealing gland (1) is sleeved into a gap between the sealing seat (2) and the transmission shaft, and the outer lining ring (3), the middle lining ring (4) and the inner lining ring (5) are extruded in the sealing seat (2); the middle lining ring (4) can deform after being extruded, so as to play a role in sealing;
annular grooves are formed in the inner surface and the outer surface of the inner lining ring (5), air inlets (7) are uniformly distributed in the annular grooves, the annular grooves in the inner surface and the annular grooves in the outer surface are communicated, and the annular grooves are used for sequentially introducing air into gaps between the transmission shaft and the inner lining ring (5) and gaps between the transmission shaft and the sealing seat (2) to realize pneumatic material cleaning.
2. A shaft end sealing and pneumatic cleaning arrangement according to claim 1, characterized in that the number of said intermediate bushings (4) is 3.
3. A shaft end sealing and pneumatic cleaning arrangement according to claim 1 or 2, wherein the gas is compressed air or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321629265.9U CN220037448U (en) | 2023-06-26 | 2023-06-26 | Shaft end sealing and pneumatic cleaning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321629265.9U CN220037448U (en) | 2023-06-26 | 2023-06-26 | Shaft end sealing and pneumatic cleaning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220037448U true CN220037448U (en) | 2023-11-17 |
Family
ID=88736175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321629265.9U Active CN220037448U (en) | 2023-06-26 | 2023-06-26 | Shaft end sealing and pneumatic cleaning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220037448U (en) |
-
2023
- 2023-06-26 CN CN202321629265.9U patent/CN220037448U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |