CN210949866U - Pressure-resistant bucket elevator sealing structure - Google Patents
Pressure-resistant bucket elevator sealing structure Download PDFInfo
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- CN210949866U CN210949866U CN201922024064.6U CN201922024064U CN210949866U CN 210949866 U CN210949866 U CN 210949866U CN 201922024064 U CN201922024064 U CN 201922024064U CN 210949866 U CN210949866 U CN 210949866U
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Abstract
A pressure-resistant bucket elevator sealing structure comprises a primary sealing structure, a secondary sealing structure and a tertiary sealing structure which are arranged along an axis; the primary sealing structure comprises a packing box cover and a packing box base, the packing box cover and the packing box base form a packing box, and a graphite packing is arranged in the packing box; the secondary sealing structure comprises a mechanical labyrinth seal arranged in the packing box seat, and the mechanical labyrinth seal is tightly attached to a plurality of annular sealing teeth on the shaft; the three-stage sealing structure comprises a frameless oil seal and a double-lip PTFE stainless steel oil seal which are arranged on the bearing seat and positioned on one side of the mechanical labyrinth seal. The utility model provides a pair of withstand voltage bucket elevator seal structure through multistage sealed, can effectively seal the bearing frame, prolongs the bearing life-span.
Description
Technical Field
The utility model relates to a seal structure, especially a withstand voltage bucket elevator machine sealing structure.
Background
The bucket elevator in the new process of conveying ash by a blast furnace dry method needs to operate in a sealed environment with the pressure of 0.3 Mpa. The existing airtight structure has poor sealing performance of a bearing seat, so that the bearing enters dust, and the bearing is frequently damaged; in addition, the shell is deformed due to too large pressure, so that pressure leakage sealing is not tight.
Disclosure of Invention
The utility model aims to solve the technical problem that a withstand voltage bucket elevator seal structure is provided, can effectively protect the bearing not receive the influence of gas dust, prolonged bearing life.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a pressure-resistant bucket elevator sealing structure comprises a primary sealing structure, a secondary sealing structure and a tertiary sealing structure which are arranged along an axis;
the primary sealing structure comprises a packing box cover and a packing box base, the packing box cover and the packing box base form a packing box, and a graphite packing is arranged in the packing box;
the secondary sealing structure comprises a mechanical labyrinth seal arranged in the packing box seat, and the mechanical labyrinth seal is tightly attached to a plurality of annular sealing teeth on the shaft;
the three-stage sealing structure comprises a frameless oil seal and a double-lip PTFE stainless steel oil seal which are arranged in the bearing seat and positioned on one side of the mechanical labyrinth seal.
The packing box seat is sealed with the bearing seat through a packing box silica gel sealing gasket, and the bearing seat is sealed with the bearing seat fixing flange through a bearing seat silica gel sealing gasket.
And an air ring is arranged at the packing box seat, and an air pipeline performs back blowing to the inside of the shaft through the air ring.
The utility model relates to a withstand voltage bucket elevator seal structure has following technological effect:
1) the bearing is effectively protected from the influence of gas dust by adopting the mode of one-level packing sealing, two-level mechanical labyrinth air chamber sealing and three-level oil sealing, and the service life of the bearing is prolonged.
2) The gas circuit pipeline is back blown in the shaft, so that not only can the graphite packing be effectively prevented from dust entering the packing box through the clearance between the shafts, but also the throttling effect can be formed between the teeth of the mechanical labyrinth seal, and the purpose of labyrinth seal is achieved.
3) The double-lip PTFE stainless steel oil seal is dustproof and pressure-resistant, and the PTFE frameless oil seal oil-retaining and lubricating combination design has the dustproof effect and the lubricating effect.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
In the figure: packing lid 1, graphite packing 2, packing box seat 3, gas circuit pipeline 4, packing box silica gel sealing pad 5, bearing frame 6, bearing frame mounting flange 7, bearing frame silica gel sealing pad 8, oil circuit lubrication pipeline 9, arc sealing head lid 10, bearing cap 11, taper sleeve bearing 12, bearing cap silica gel sealing pad 13, no skeleton oil blanket 14, two lips PTFE stainless steel oil blanket 15, mechanical labyrinth seals 16, gas ring 17.
Detailed Description
As shown in fig. 1, a seal structure of a pressure-resistant bucket elevator is provided on a shaft on the side of a taper sleeve bearing 12. And a three-stage sealing structure is adopted.
The first-level sealing structure is used for packing and sealing, and comprises a packing box cover 1 and a packing box base 3, wherein the packing box cover 1 and the packing box base 3 form a packing box, and a graphite packing 2 is arranged in the packing box. In addition, be equipped with the gas ring 17 on packing box seat 3, gas circuit pipeline 4 and gas ring 17 intercommunication, gas circuit pipeline 4 carries out the blowback through gas ring 17 in the axle, prevents effectively that the dust from getting into in the packing box through the clearance between the axle.
The second stage sealing structure is a mechanical labyrinth air chamber seal, and comprises a mechanical labyrinth seal 16 arranged on the right side of an air ring 17, a plurality of annular sealing teeth arranged at one time are arranged on a corresponding shaft along the axis direction, a series of closure gaps and expansion cavities are formed between the teeth, and the purpose of leakage resistance is achieved by the throttling effect generated when the sealed gas passes through the gaps of the zigzag labyrinth.
The third-stage sealing structure is oil seal, is positioned on the right side of the mechanical labyrinth seal 16, and adopts a second-stage double-lip PTFE stainless steel oil seal 15 and a first-stage PTFE frameless oil seal. The sealing structure has the advantages that the second-stage double-lip PTFE stainless steel oil seal 15 is mainly used for dust prevention and pressure resistance, and the PTFE frameless oil seal is mainly used for sealing lubricating oil in the bearing and keeping the oil and lubricating.
In addition, the bearing seat fixing flange 7 is welded with the shell of the circular tube, and the bearing seat 6 is tightly connected to the bearing seat fixing flange 7 through bolts and a bearing seat silica gel sealing gasket 8. The packing box base 3 is hermetically connected with the bearing seat 6 through a bolt and a packing box silica gel sealing gasket 5.
The casing is sealed and is adopted arc-shaped sealing cover 10, and external and internal air pressure is effectively isolated.
Claims (3)
1. The utility model provides a withstand voltage bucket elevator seal structure which characterized in that: the sealing structure comprises a primary sealing structure, a secondary sealing structure and a tertiary sealing structure which are arranged along an axis;
the primary sealing structure comprises a packing box cover (1) and a packing box base (3), the packing box cover (1) and the packing box base (3) form a packing box, and a graphite packing (2) is arranged in the packing box;
the secondary sealing structure comprises a mechanical labyrinth seal (16) arranged in the packing box seat (3), and the mechanical labyrinth seal (16) is tightly attached to a plurality of annular sealing teeth on the shaft;
the three-stage sealing structure comprises a frameless oil seal (14) and a double-lip PTFE stainless steel oil seal (15), wherein the frameless oil seal (14) and the double-lip PTFE stainless steel oil seal are arranged in a bearing seat (6) and are positioned on one side of a mechanical labyrinth seal (16).
2. The sealing structure of pressure-resistant bucket elevator as claimed in claim 1, wherein: the packing box is characterized in that the packing box seat (3) and the bearing seat (6) are sealed through a packing box silica gel sealing gasket (5), and the bearing seat (6) and the bearing seat fixing flange (7) are sealed through a bearing seat silica gel sealing gasket (8).
3. The sealing structure of pressure-resistant bucket elevator as claimed in claim 1, wherein: the packing box seat (3) is provided with an air ring (17), and the air pipeline (4) performs back flushing to the inside of the shaft through the air ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922024064.6U CN210949866U (en) | 2019-11-21 | 2019-11-21 | Pressure-resistant bucket elevator sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922024064.6U CN210949866U (en) | 2019-11-21 | 2019-11-21 | Pressure-resistant bucket elevator sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949866U true CN210949866U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922024064.6U Active CN210949866U (en) | 2019-11-21 | 2019-11-21 | Pressure-resistant bucket elevator sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919139A (en) * | 2021-01-18 | 2021-06-08 | 江西齐劲材料有限公司 | Direct-plow type powder block separator |
| CN114754078A (en) * | 2022-04-12 | 2022-07-15 | 安徽百特机电工程有限公司 | Sealed blowback device of lifting machine bottom bearing |
-
2019
- 2019-11-21 CN CN201922024064.6U patent/CN210949866U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112919139A (en) * | 2021-01-18 | 2021-06-08 | 江西齐劲材料有限公司 | Direct-plow type powder block separator |
| CN114754078A (en) * | 2022-04-12 | 2022-07-15 | 安徽百特机电工程有限公司 | Sealed blowback device of lifting machine bottom bearing |
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