CN212374253U - Inflatable spiral feeder labyrinth sealing device - Google Patents
Inflatable spiral feeder labyrinth sealing device Download PDFInfo
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- CN212374253U CN212374253U CN202020565163.5U CN202020565163U CN212374253U CN 212374253 U CN212374253 U CN 212374253U CN 202020565163 U CN202020565163 U CN 202020565163U CN 212374253 U CN212374253 U CN 212374253U
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- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 239000010436 fluorite Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses an inflatable spiral feeder labyrinth seal device, which comprises a shell sleeved at the shaft end of a spiral feeder, wherein a middle air inlet is arranged on the shell, a seal structure is arranged between the shell and the shaft, an inner seal port and an outer seal port are arranged at the inner peripheral side of the seal structure, and an elastic O-shaped seal ring is arranged at the outer peripheral side of the seal structure, and the middle air inlet extends to the position between the inner seal port and the outer seal port; gas is fed from the middle gas inlet, after the gas enters, the inner side sealing port is opened under the action of the gas force, and meanwhile, the outer side sealing port is closed against the action of the gas force. The utility model provides a screw conveyer "emit the problem of ash". And can stably run under extreme working conditions, and the service life is prolonged.
Description
Technical Field
The utility model relates to an inflatable screw feeder labyrinth seals device.
Background
The field fluorite production line drying system mainly comprises 1 double-screw feeder (SLS50), a steam rotary drying furnace (NGZT2620), 5 screw conveyors (LS315),2 screw conveyors (LS400),2 bucket elevators (NE50-32) and 2 buried scraper conveyors (MS 320). The method comprises the following steps that 1 double-screw feeder feeds a steam rotary drying furnace, after drying is completed, 5 tandem screw conveyors feed a bucket elevator, the bucket elevator discharges materials to a buried scraper conveyor, and finally the materials enter a fluorite concentrate bin to complete the whole drying and conveying process. After the fluorite mineral is ground and selected, the granularity of the fluorite product is about 75 percent of minus 500 meshes, and the water content of the fluorite powder dried by a dryer is less than or equal to 1 percent. In the actual production process, the dry powder leaks seriously, especially the leakage at the shaft head and the shaft tail of the screw conveyer. The dust in the workshop seriously exceeds the standard, the visibility is less than 1.5m, and the production and the occupational health of workers are seriously affected. The problem of dust is solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an inflatable screw feeder labyrinth seals device has solved screw conveyer "ash emission". And can stably run under extreme working conditions, and the service life is prolonged.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an inflatable spiral feeder labyrinth sealing device comprises a shell sleeved at the shaft end of a spiral feeder, wherein a middle air inlet is arranged on the shell, a sealing structure is arranged between the shell and the shaft, an inner side sealing opening and an outer side sealing opening are arranged on the inner peripheral side of the sealing structure, and an elastic O-shaped sealing ring is arranged on the outer peripheral side of the sealing structure, and the middle air inlet extends to the position between the inner side sealing opening and the outer side sealing opening; gas is fed from the middle gas inlet, after the gas enters, the inner side sealing port is opened under the action of the gas force, and meanwhile, the outer side sealing port is closed against the action of the gas force.
Further, the inner side sealing port comprises at least one annular lip, and the lower end of the annular lip is in contact fit with the shaft.
Further, the outside sealing port comprises 1L-shaped annular lip, and the lower end of the annular lip is in contact fit with the shaft.
Further, each annular lip is close to the lower end and all has a certain gradient, and all inclines towards air current direction of delivery.
Further, the contact width of the lower end face of each annular lip and the shaft is 0.4mm-0.6 mm.
Further, the contact width of the lower end face of each annular lip with the shaft is 0.5 mm.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the sealing device adopts active air inlet, and after air enters from the middle air inlet hole, the inner side sealing port is opened, and the outer side sealing port is closed, so that the inner side dust blowing (air blowing) and the outer side dust stopping are realized. Thereby achieving the purpose of zero leakage.
At present, under the background of widely using the screw conveyor, the invention of the product essentially solves the problem of ash emission of the screw conveyor. And can stably operate under extreme working conditions. The service life can be estimated to be about 12 months.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic structural view of the labyrinth sealing device of the inflatable spiral feeder of the present invention;
description of reference numerals: 1. a middle air inlet hole; 2. an inner side sealing port; 3. an outer side sealing port; 4. an elastic O-shaped sealing ring; 5-axis; 6-shell.
Detailed Description
As shown in fig. 1, the labyrinth sealing device for the inflatable screw feeder comprises a housing 6 sleeved at the shaft end of the screw feeder, wherein a middle air inlet 1 is arranged on the housing 6, a sealing structure is arranged between the housing and the shaft, an inner sealing port 2 and an outer sealing port 3 which are arranged on the inner peripheral side of the sealing structure (which can be made of rubber or polytetrafluoroethylene) and an elastic O-ring 4 which is arranged on the outer peripheral side of the sealing structure are arranged, and the middle air inlet 1 extends to a position between the inner sealing port 2 and the outer sealing port 3; gas is fed from the middle gas inlet hole 1, the inner side sealing port 2 is opened under the action of gas force after the gas enters, and meanwhile, the outer side sealing port 3 is closed against the action of gas force.
The utility model discloses a sealing device adopts the initiative to admit air, and gaseous back that gets into by middle inlet port 1 is surveyed sealing port 2 in opening under the gas pressure effect, closes outer survey sealing port 3 simultaneously, surveys in the realization and blows (gas) ash, surveys outward and ends (gas) ash. Thereby achieving the purpose of zero leakage and essentially solving the problem of ash emission of the screw conveyer. And can stably operate under extreme working conditions. The service life can be estimated to be about 12 months.
The air flow direction principle of the sealing device is that compressed air enters an inner cavity of the sealing device through a middle air inlet hole 1, an annular lip of an inner side sealing port 2 is separated from a shaft neck for a certain gap under the action of air force, the compressed air flows from the inner cavity to the inner side through the gap to prevent dust from entering the inner cavity, and an annular lip of an outer side sealing port 3 extends to be tightly attached to the shaft neck to completely prevent air from flowing out, so that the dustproof sealing effect is achieved. The air flow direction is shown by the arrows in the schematic diagram of the air flow direction of the sealing device.
Because the contact width of the lower end face of the annular lip with the shaft is about 0.5 mm. The outer sealing lip extends under the action of air force and is more tightly attached to the shaft to play a role of non-return sealing
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. The utility model provides an inflatable screw feeder labyrinth sealing device which characterized in that: the sealing structure comprises a shell sleeved at the shaft end of the screw feeder, wherein a middle air inlet is arranged on the shell, a sealing structure is arranged between the shell and the shaft, an inner side sealing opening and an outer side sealing opening are arranged on the inner peripheral side of the sealing structure, and an elastic O-shaped sealing ring is arranged on the outer peripheral side of the sealing structure, and the middle air inlet extends to a position between the inner side sealing opening and the outer side sealing opening; gas is fed from the middle gas inlet, after the gas enters, the inner side sealing port is opened under the action of the gas force, and meanwhile, the outer side sealing port is closed against the action of the gas force.
2. The labyrinth sealing device for an inflatable screw feeder according to claim 1, characterized in that: the inner side sealing port comprises at least one annular lip, and the lower end of the annular lip is in contact fit with the shaft.
3. The labyrinth sealing device for an inflatable screw feeder according to claim 2, characterized in that: the outside sealing port includes the annular lip of 1L type, the annular lip lower extreme of L type with the axle contacts the cooperation.
4. The labyrinth sealing device for an inflatable screw feeder according to claim 3, characterized in that: each annular lip is close to the lower end and all has a certain gradient, and all inclines towards the direction of air flow delivery.
5. The labyrinth sealing device for an inflatable screw feeder according to claim 4, characterized in that: the contact width of the lower end face of each annular lip and the shaft is 0.4mm-0.6 mm.
6. The labyrinth sealing device for an inflatable screw feeder according to claim 5, characterized in that: the contact width of the lower end face of each annular lip with the shaft is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020565163.5U CN212374253U (en) | 2020-04-16 | 2020-04-16 | Inflatable spiral feeder labyrinth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020565163.5U CN212374253U (en) | 2020-04-16 | 2020-04-16 | Inflatable spiral feeder labyrinth sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212374253U true CN212374253U (en) | 2021-01-19 |
Family
ID=74160476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020565163.5U Active CN212374253U (en) | 2020-04-16 | 2020-04-16 | Inflatable spiral feeder labyrinth sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212374253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115352888A (en) * | 2022-08-26 | 2022-11-18 | 首钢股份公司迁安钢铁公司 | Shaft head air sealing device of pneumatic conveying equipment and sealing method thereof |
-
2020
- 2020-04-16 CN CN202020565163.5U patent/CN212374253U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115352888A (en) * | 2022-08-26 | 2022-11-18 | 首钢股份公司迁安钢铁公司 | Shaft head air sealing device of pneumatic conveying equipment and sealing method thereof |
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