CN221074723U - Gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure - Google Patents
Gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure Download PDFInfo
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- CN221074723U CN221074723U CN202322674978.3U CN202322674978U CN221074723U CN 221074723 U CN221074723 U CN 221074723U CN 202322674978 U CN202322674978 U CN 202322674978U CN 221074723 U CN221074723 U CN 221074723U
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- shaft sleeve
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- 238000007789 sealing Methods 0.000 title claims abstract description 255
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003034 coal gas Substances 0.000 claims abstract description 6
- 238000010030 laminating Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure, and belongs to the technical field of fan equipment. The device mainly comprises a shaft sleeve, a sealing seat, an annular sealing gasket, a first sealing piece, a second sealing piece, a sealing cover, an elastic sealing piece, an air inlet channel, an annular groove and a spring; according to the utility model, the wear-resistant sealing strip attached to the outer ring of the shaft sleeve is arranged on the inner ring of the first sealing element, so that the wear resistance is improved, the service life is prolonged, the matched conical surfaces are arranged on the abutting surfaces of the annular sealing gasket and the first sealing element, the first sealing element can slightly slide along the shaft sleeve under the action of the elasticity of the spring after being worn, the wear-resistant sealing strip is tightly attached to the outer ring of the shaft sleeve through the sealing cover and the second sealing element, the gap between the sealing strip and the shaft sleeve is reduced, the tightness is improved, and isolation gas is introduced through the air inlet channel, so that the leakage of coal gas and yellow phosphorus tail gas is further prevented.
Description
Technical Field
The utility model belongs to the technical field of fan equipment, and particularly relates to a gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure.
Background
Fans are widely used for ventilation and air induction in factories, mines, tunnels, boilers and the like. When the fan is applied to conveying toxic gases such as coal gas, the sealing performance requirement on the fan impeller shaft is high, the existing sealing mode is to install sealing elements in a sealing seat of the fan impeller shaft for sealing, but most sealing elements of dynamic sealing are vulnerable parts and have short service life, gaps are easy to generate due to abrasion in the long-term working process, and the gaps can reduce the sealing performance of the sealing elements, so that coal gas and yellow phosphorus tail gas leak and pollute the air.
Disclosure of Invention
In order to overcome the problems that most sealing elements of dynamic sealing in the background technology are vulnerable parts, have short service life and are frequently replaced, gaps are easy to generate due to abrasion in the long-term working process, the gaps can reduce the tightness of the sealing elements, and gas and yellow phosphorus tail gas leak and pollute the air, the utility model provides a gas and yellow phosphorus tail gas pressurizing impeller shaft sealing structure; through setting up the wear-resisting sealing strip of laminating with the axle sleeve outer lane at first sealing member inner circle, be favorable to improving the wearability, increase of service life, set up the conical surface of mutually supporting at the butt face of annular sealing pad and first sealing member, the usable spring's elasticity effect after first sealing member is worn and worn, make it follow the little slip of axle sleeve through sealed lid and second sealing member, make wear-resisting sealing strip and the inseparable laminating of axle sleeve outer lane, thereby reduce the clearance between sealing strip and the axle sleeve, improve the leakproofness, and let in the isolation gas through the inlet channel, further prevent coal gas, yellow phosphorus tail gas leakage.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a gas, yellow phosphorus tail gas pressurization impeller shaft seal structure mainly includes axle sleeve, sealing seat, annular seal pad, first sealing member, second sealing member, sealed lid, elastic sealing piece, inlet channel, ring channel, spring, the sealing seat cover establish on the axle sleeve, the sealing seat tip is equipped with annular stopper, annular stopper inner circle diameter is less than the inner circle diameter of sealing seat, annular seal pad, first sealing member and second sealing member cover establish on the axle sleeve in proper order, annular seal pad, the outer lane of first sealing member and second sealing member respectively with the laminating of sealing seat's inner circle, evenly be equipped with the wear-resisting sealing strip that closely laminates with axle sleeve outer lane surface on the first sealing member inner circle, the inner circle of second sealing member is closely laminated with axle sleeve outer lane surface, annular seal pad and the one side that first sealing member mutually supports all is established to the conical surface that mutually support, annular seal pad's planar end and annular stopper's inner end butt; elastic sealing sheets are arranged between the first sealing piece and the second sealing piece and between the second sealing piece and the sealing cover, the inner ring end of each elastic sealing sheet is bent along one end of the corresponding annular limiting block, and the bent end of each elastic sealing sheet 7 is clung to the outer ring of the corresponding shaft sleeve; the sealing cover is arranged at the end part of the sealing seat through a screw, the protruding part of the sealing cover is abutted with the end part of the second sealing piece, a spring is sleeved on the screw, and the end part of the spring is abutted with the sealing cover and the screw cap respectively; the sealing seat is radially provided with an air inlet channel, the outer ring of the first sealing piece is provided with an annular groove which is convenient for isolating gas to pass through, and the annular groove is uniformly provided with air inlets along the circumferential direction.
The sealing seat is uniformly provided with through holes along the circumferential direction, the sealing seat is connected with the fan box body through bolts, the side part of the sealing seat is provided with a first mounting groove, and the sealing ring is arranged in the first mounting groove and is tightly attached to the end face of the fan box body.
The sealing cover is characterized in that a second mounting groove is formed in the outer ring of the protruding part of the sealing cover, and the sealing ring is mounted in the second mounting groove and is tightly attached to the inner ring of the sealing seat.
The inner end face of the annular limiting block, the side end faces of the first sealing piece and the second sealing piece are respectively provided with a limiting groove, and gaskets are respectively arranged in the limiting grooves.
The inner ring of the shaft sleeve is provided with a third mounting groove, and the sealing ring is arranged in the third mounting groove and is tightly attached to the surface of the impeller shaft.
The surface of the outer ring of the shaft sleeve is provided with a wear-resistant coating.
The utility model has the beneficial effects that:
According to the utility model, the wear-resistant sealing strip attached to the outer ring of the shaft sleeve is arranged on the inner ring of the first sealing element, so that the wear resistance is improved, the service life is prolonged, the matched conical surfaces are arranged on the abutting surfaces of the annular sealing gasket and the first sealing element, the first sealing element can slightly slide along the shaft sleeve under the action of the elasticity of the spring after being worn, the wear-resistant sealing strip is tightly attached to the outer ring of the shaft sleeve through the sealing cover and the second sealing element, the gap between the sealing strip and the shaft sleeve is reduced, the tightness is improved, and isolation gas is introduced through the air inlet channel, so that the leakage of coal gas and yellow phosphorus tail gas is further prevented.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a cross-sectional view of the internal structure of the present utility model.
Fig. 3 is an enlarged partial view of the internal structure of the present utility model.
Fig. 4 is a perspective view showing an installation state of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding of the skilled person.
The utility model discloses a gas and yellow phosphorus tail gas pressurized impeller shaft sealing structure, which mainly comprises a shaft sleeve 1, a sealing seat 2, an annular sealing gasket 3, a first sealing piece 4, a second sealing piece 5, a sealing cover 6, an elastic sealing piece 7, an air inlet channel 8, an annular groove 9 and a spring 10, wherein the sealing seat 2 is sleeved on the shaft sleeve 1, the end part of the sealing seat 2 is provided with an annular limiting block 21, the diameter of the inner ring of the annular limiting block 21 is smaller than the diameter of the inner ring of the sealing seat 2, the annular sealing gasket 3, the first sealing piece 4 and the second sealing piece 5 are sequentially sleeved on the shaft sleeve 1, the outer rings of the annular sealing gasket 3, the first sealing piece 4 and the second sealing piece 5 are respectively attached to the inner ring of the sealing seat 2, wear-resistant sealing strips 41 tightly attached to the surface of the outer ring of the shaft sleeve 1 are uniformly arranged on the inner ring of the first sealing piece 4, the inner ring of the second sealing piece 5 is attached to the surface of the outer ring of the shaft sleeve 1, the mutually abutted surfaces of the annular sealing gasket 3 and the first sealing piece 4 are respectively provided with mutually matched conical surfaces, and the plane end surfaces of the annular limiting block 3 and the annular limiting block 21 are abutted to the inner plane end surfaces of the annular limiting block 3; elastic sealing sheets 7 are arranged between the annular limiting block 21 and the annular sealing gasket 3, and between the first sealing piece 4 and the second sealing piece 5 and between the second sealing piece 5 and the sealing cover 6, the inner ring end of the elastic sealing sheet 7 is bent along one end of the annular limiting block 21, and the bent end of the elastic sealing sheet 7 is clung to the outer ring of the shaft sleeve 1; the sealing cover 6 is arranged at the end part of the sealing seat 2 through a screw, the protruding part of the sealing cover 6 is abutted with the end part of the second sealing piece 5, a spring 10 is sleeved on the screw, and the end part of the spring 10 is abutted with the sealing cover 6 and the screw cap respectively; the sealing seat 2 is provided with an air inlet channel 8 along the radial direction, the outer ring of the first sealing element 4 is provided with an annular groove 9 which is convenient for isolating gas to pass through, and the annular groove 9 is uniformly provided with air inlet holes 91 along the circumferential direction.
According to the utility model, the impeller shaft penetrates through the shaft sleeve 1 and is in interference fit with the shaft sleeve 1, one end of the shaft sleeve 1 is tightly propped against the impeller, the other end of the shaft sleeve 1 is tightly propped against the shaft shoulder of the impeller shaft, the sealing seat 2, the annular sealing gasket 3, the first sealing piece 4, the second sealing piece 5 and the sealing cover 6 are sequentially sleeved on the shaft sleeve, meanwhile, the annular limiting block 21 and the annular sealing gasket 3 are respectively provided with the elastic sealing piece 7 between the first sealing piece 4 and the second sealing piece 5 and between the second sealing piece 5 and the sealing cover 6, an operator screws the screw of the sealing cover 6, the second sealing piece 5 is pressed through the sealing cover 6, the second sealing piece 5 further presses the first sealing piece 4, the first sealing piece 4 is tightly propped against the annular sealing gasket 3, so that mutually-adhered end surfaces are more tight, good sealing performance is ensured, at the moment, the wear-resistant sealing strip 41 and the outer surface of the shaft sleeve are in a contact state, the gap between the wear-resistant sealing strip 41 and the shaft sleeve is reduced, the sealing performance is improved, and leakage of gas and yellow phosphorus tail gas is effectively prevented; when the wear-resistant sealing strip 41 is slightly worn in the long-term working process, the second sealing element 5 is extruded by the sealing cover 6 under the action of the elasticity of the spring, and the second sealing element 5 further extrudes the first sealing element 4, so that the first sealing element 4 slightly slides along the shaft sleeve 1, the wear-resistant sealing strip 41 is always attached to the shaft sleeve 1, the air tightness is improved, and the service life is prolonged; in order to improve the sealing of gas and other toxic medium gases, nitrogen is introduced between the first sealing piece 4 and the shaft sleeve 1 through the air inlet channel 8, the nitrogen is used for pressing the gas and yellow phosphorus tail gas leaked from the gap between the wear-resistant sealing strip 41 and the shaft sleeve 1 into the air return box body, the elastic sealing piece 7 is beneficial to blocking the gas from flowing outwards along the axial direction of the shaft sleeve, the gas is prevented from leaking, and after the bent end of the elastic sealing piece 7 is worn, elastic deformation is generated and the elastic sealing piece is attached to the outer ring of the shaft sleeve 1, so that the air tightness is further improved.
The sealing seat 2 is uniformly provided with through holes 23 for bolts to pass through along the circumferential direction, the sealing seat 2 is connected with the fan box body through the bolts, the side part of the sealing seat 2 is provided with a first mounting groove 22, and the sealing ring is arranged in the first mounting groove 22 and is tightly attached to the end surface of the fan box body; can avoid gas, yellow phosphorus tail gas in the fan box to leak from the clearance of sealing seat 2 and fan box junction, guarantee the gas tightness that sealing seat 2 and fan box lateral wall are connected.
A second mounting groove 61 is formed in the outer ring of the bulge part of the sealing cover 6, and a sealing ring is arranged in the second mounting groove 61 and is tightly attached to the inner ring of the sealing seat 2; the leakage of gas and yellow phosphorus tail gas between the outer ring of the bulge part of the sealing cover 6 and the inner ring of the sealing seat 2 can be avoided, and the air tightness is improved.
The inner end face of the annular limiting block 21, the side end faces of the first sealing piece 4 and the second sealing piece 5 are respectively provided with a limiting groove 42, and gaskets are respectively arranged in the limiting grooves 42, so that the air tightness is further improved.
The inner ring of the shaft sleeve 1 is provided with a third mounting groove 11, and the sealing ring is arranged in the third mounting groove 11 and is tightly attached to the surface of the impeller shaft; the leakage of the tail gas of gas and yellow phosphorus from the gap between the shaft sleeve 1 and the impeller shaft can be effectively avoided.
The surface of the outer ring of the shaft sleeve 1 is provided with a wear-resistant coating; the wear resistance of the shaft sleeve 1 is improved, and the service life of the shaft sleeve 1 is prolonged.
The working process comprises the following steps:
According to the utility model, the impeller shaft penetrates through the shaft sleeve 1 and is in interference fit with the shaft sleeve 1, one end of the shaft sleeve 1 is tightly propped against the impeller, the other end of the shaft sleeve 1 is tightly propped against the shaft shoulder of the impeller shaft, the sealing seat 2, the annular sealing gasket 3, the first sealing piece 4, the second sealing piece 5 and the sealing cover 6 are sequentially sleeved on the shaft sleeve, meanwhile, the annular limiting block 21 and the annular sealing gasket 3 are respectively provided with the elastic sealing piece 7 between the first sealing piece 4 and the second sealing piece 5 and between the second sealing piece 5 and the sealing cover 6, an operator screws the screw of the sealing cover 6, the second sealing piece 5 is pressed through the sealing cover 6, the second sealing piece 5 further presses the first sealing piece 4, the first sealing piece 4 is tightly propped against the annular sealing gasket 3, so that mutually-adhered end surfaces are more tight, good sealing performance is ensured, at the moment, the wear-resistant sealing strip 41 and the outer surface of the shaft sleeve are in a contact state, the gap between the wear-resistant sealing strip 41 and the shaft sleeve is reduced, the sealing performance is improved, and leakage of gas and yellow phosphorus tail gas is effectively prevented; when the wear-resistant sealing strip 41 is slightly worn in the long-term working process, the second sealing element 5 is extruded by the sealing cover 6 under the action of the elasticity of the spring, and the second sealing element 5 further extrudes the first sealing element 4, so that the first sealing element 4 slightly slides along the shaft sleeve 1, the wear-resistant sealing strip 41 is always attached to the shaft sleeve 1, the air tightness is improved, and the service life is prolonged; in order to improve the sealing of gas and other toxic medium gases, nitrogen is introduced between the first sealing piece 4 and the shaft sleeve 1 through the air inlet channel 8, the nitrogen is used for pressing the gas and yellow phosphorus tail gas leaked from the gap between the wear-resistant sealing strip 41 and the shaft sleeve 1 into the air return box body, the elastic sealing piece 7 is beneficial to blocking the gas from flowing outwards along the axial direction of the shaft sleeve, the gas is prevented from leaking, and after the bent end of the elastic sealing piece 7 is worn, elastic deformation is generated and the elastic sealing piece is attached to the outer ring of the shaft sleeve 1, so that the air tightness is further improved.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the utility model, and that, although the utility model has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (6)
1. A gas, yellow phosphorus tail gas pressurization impeller shaft seal structure, its characterized in that: the utility model provides a coal gas, yellow phosphorus tail gas pressurization impeller shaft seal structure includes axle sleeve (1), sealing seat (2), annular seal (3), first sealing member (4), second sealing member (5), sealed lid (6), elastic sealing piece (7), inlet channel (8), ring channel (9), spring (10), sealing seat (2) cover establish on axle sleeve (1), sealing seat (2) tip is equipped with annular stopper (21), annular stopper (21) inner circle diameter is less than sealing seat (2) inner circle diameter, annular seal (3), first sealing member (4) and second sealing member (5) cover in proper order establish on axle sleeve (1), annular seal (3), the outer lane of first sealing member (4) and second sealing member (5) respectively with sealing seat (2) inner circle laminating, evenly be equipped with on the inner lane of first sealing member (4) with axle sleeve (1) outer lane surface closely laminating sealing strip (41), annular seal (5) inner circle and axle sleeve (1) surface laminating, annular seal (3) and annular seal (4) inner circle face and annular seal (4) are equipped with the annular stopper (3) and are the annular seal (4) of face that the face of abutting each other, and the face of annular seal (4) is the face of bearing face that is mutually supporting and is sealed with annular seal (21; elastic sealing sheets (7) are arranged between the first sealing piece (4) and the second sealing piece (5) and between the second sealing piece (5) and the sealing cover (6), the inner ring end of each elastic sealing sheet (7) is bent along one end of the corresponding annular limiting piece (21), and the bent end of each elastic sealing sheet (7) is clung to the outer ring of the corresponding shaft sleeve (1); the sealing cover (6) is arranged at the end part of the sealing seat (2) through a screw, the protruding part of the sealing cover (6) is abutted with the end part of the second sealing piece (5), a spring (10) is sleeved on the screw, and the end part of the spring (10) is abutted with the sealing cover (6) and the screw cap respectively; an air inlet channel (8) is arranged on the sealing seat (2) along the radial direction, an annular groove (9) which is convenient for isolating gas to pass through is formed in the outer ring of the first sealing piece (4), and air inlets (91) are uniformly formed in the annular groove (9) along the circumferential direction.
2. The gas and yellow phosphorus tail gas pressurized impeller shaft sealing structure as claimed in claim 1, wherein: the sealing seat (2) is uniformly provided with through holes (23) along the circumferential direction, the sealing seat (2) is connected with the fan box body through the bolts, the side part of the sealing seat (2) is provided with a first mounting groove (22), and the sealing ring is arranged in the first mounting groove (22) and is tightly attached to the end face of the fan box body.
3. A gas, yellow phosphorus tail gas pressurized impeller shaft sealing structure as claimed in claim 1 or 2, wherein: the sealing cover (6) is characterized in that a second mounting groove (61) is formed in the outer ring of the protruding part of the sealing cover (6), and the sealing ring is mounted in the second mounting groove (61) and is tightly attached to the inner ring of the sealing seat (2).
4. A gas, yellow phosphorus tail gas pressurized impeller shaft sealing structure as claimed in claim 3, wherein: the inner end face of the annular limiting block (21), the side end faces of the first sealing piece (4) and the second sealing piece (5) are respectively provided with a limiting groove (42), and gaskets are respectively arranged in the limiting grooves (42).
5. A gas, yellow phosphorus tail gas pressurized impeller shaft sealing structure as claimed in claim 1 or 4, wherein: the inner ring of the shaft sleeve (1) is provided with a third mounting groove (11), and the sealing ring is arranged in the third mounting groove (11) and is tightly attached to the surface of the impeller shaft.
6. The gas and yellow phosphorus tail gas pressurized impeller shaft sealing structure as claimed in claim 1, wherein: the surface of the outer ring of the shaft sleeve (1) is provided with a wear-resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322674978.3U CN221074723U (en) | 2023-10-07 | 2023-10-07 | Gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322674978.3U CN221074723U (en) | 2023-10-07 | 2023-10-07 | Gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074723U true CN221074723U (en) | 2024-06-04 |
Family
ID=91251466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322674978.3U Active CN221074723U (en) | 2023-10-07 | 2023-10-07 | Gas and yellow phosphorus tail gas pressurization impeller shaft sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074723U (en) |
-
2023
- 2023-10-07 CN CN202322674978.3U patent/CN221074723U/en active Active
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