CN214366716U - Sealing structure mounted on shaft of blower - Google Patents
Sealing structure mounted on shaft of blower Download PDFInfo
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- CN214366716U CN214366716U CN202023280744.3U CN202023280744U CN214366716U CN 214366716 U CN214366716 U CN 214366716U CN 202023280744 U CN202023280744 U CN 202023280744U CN 214366716 U CN214366716 U CN 214366716U
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Abstract
The utility model relates to a dress is at the epaxial seal structure of blower, and the epaxial cover of its fan is equipped with between fan axle sleeve and the bush is arranged in to bush and interior axle sleeve and this interior axle sleeve. O-shaped sealing ring structures are respectively arranged between the matching surfaces between the inner shaft sleeve and the fan shaft and between the matching surfaces between the outer sleeve and the fan wallboard. One end of the outer sleeve is an open port, and the other end port is provided with an annular flange. The packing, the gasket and the spacer bush are all sleeved outside the inner shaft sleeve and are arranged in the outer sleeve. The spacer bush is arranged between the two packing sets, and the packing sets and the gaskets are alternately arranged on two sides of the spacer bush. The gland is established at the open port department of overcoat, is fixed on the fan wallboard, can inwards compress tightly packing, gasket and spacer. And inflation channels which can be communicated with each other and can be communicated with inflation holes in the fan wallboard are arranged on the wall body of the spacer sleeve and the wall body of the outer sleeve. This patent has realized that solid particle causes the purpose of adverse effect to the accessory in the seal structure in can avoiding the medium, can keep reliable sealing ability in long-time operation.
Description
Technical Field
The utility model relates to an air-blower sealing technique field, concretely relates to can be used for installing at epaxial shaft seal structure of air-blower.
Background
The shaft sealing structure of the prior (Roots) blower mostly adopts various sealing forms such as labyrinth seal, piston ring seal, packing seal, dry gas seal, mechanical seal and the like. When the medium conveyed by the blower contains solid particles and the conveyed medium is not allowed to leak under corresponding working conditions, the prior mechanical seal or dry gas seal structure can be adopted to achieve the purpose of solving the leakage problem. However, there are problems that the time for maintaining the reliability of the seal structure is short, the service life of the seal fitting is short, and the use cost is high.
Under the above-mentioned operating condition requirement that the medium containing solid particles must not be transported to leak, it is necessary to provide a shaft sealing structure which not only has good sealing performance, but also can prevent the solid particles in the medium from causing adverse effects on the sealing fittings, and the purpose of maintaining sealing reliability after long-time operation is achieved.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention provides a sealing structure installed on a shaft of a blower, which can avoid adverse effects of solid particles in a medium on a fitting in the sealing structure by means of the sealing structure configured on the shaft of the blower, and can maintain the reliability of the sealing ability after long-time operation.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model provides a dress seal structure on fan shaft, includes the suit at fan epaxial and be in the interior axle sleeve between fan axle sleeve and the bush, the suit is in just fixed mounting is in the overcoat on the fan wallboard outside the interior axle sleeve to and gland, spacer, a plurality of packing and a plurality of gasket. The inner shaft sleeve can rotate synchronously with the bushing.
An O-shaped sealing ring structure is arranged between the matching surfaces of the inner shaft sleeve and the fan shaft. An O-shaped sealing ring structure is arranged between the outer sleeve and the matching surface between the fan wallboards.
One end of the outer sleeve is of an open port structure, and the other end of the outer sleeve is of an annular flange structure which extends radially inwards.
The packing, the gasket and the spacer bush are all sleeved outside the inner shaft sleeve and are arranged in the outer sleeve. The spacer bush is arranged between the two packing sets, and the packing sets are alternately arranged on the two sides of the spacer bush with the gasket.
The gland is established open port department of overcoat is fixed on the fan wallboard, and can inwards compress tightly the packing the gasket reaches the spacer sleeve. The opening port of the outer sleeve is provided with a flange extending outwards in the radial direction, and the cover plate flange of the gland is overlapped with the flange on the opening port side of the outer sleeve and is fixedly installed on the fan wallboard through screws. The screw is sleeved with a gasket, and the gasket is clamped between a top cap of the screw and a cover plate flange of the gland.
And an inflation channel which can be communicated mutually and can be communicated with an inflation hole in the fan wallboard is arranged on the wall body of the spacer sleeve and the wall body of the outer sleeve.
The packing is also called sealing packing, and is usually woven by soft threadlike objects, and the packing is filled in a sealing cavity through a strip-shaped object with a square cross section, so that sealing is realized.
Further, the gasket is a teflon gasket. The sealing performance of the sealing structure is improved by utilizing the high thermal expansion coefficient and the self-lubricating property of the PTFE gasket material. Preferably, three groups of packing are arranged between the open port of the outer sleeve and the spacer sleeve, and two groups of gaskets are arranged on two sides of the middle packing. Two groups of packing are arranged between the annular flange of the outer sleeve and the spacer sleeve, and a group of gaskets is respectively arranged between the two groups of packing and between the annular flange and the packing.
Furthermore, an inflation groove a is formed in the outer wall of the outer sleeve, and a plurality of inflation holes a are formed in the bottom wall of the inflation groove a, wherein circles of inflation holes a are distributed at intervals. The inflation hole a can be communicated with the inflation groove a and the inner cavity of the coat. The groove depth of the inflating groove a on the outer sleeve is between 0.5mm and 3.5mm, and preferably 1.5mm, 2mm or 2.5 mm. The number of the inflation holes a which are arranged at the bottom of the inflation groove a in a circle is 4-8, such as 6. Preferably, the plurality of air-filling holes a are arranged at intervals uniformly around the circumference.
And the outer wall and the inner wall of the spacer sleeve are respectively provided with an inflation groove b, and the wall body of the spacer sleeve is provided with a plurality of inflation holes b for communicating the two inflation grooves b. A plurality of the inflation holes b are alternately distributed on the same ring. The groove depth of the aeration groove b on the spacer sleeve is between 1mm and 4mm, preferably 2mm, 2.5mm, 3mm or 3.5 mm. The number of the aeration holes b arranged between the bottoms of the two aeration grooves b is 4-8, such as 6. Preferably, the plurality of air-filling holes b are arranged at intervals evenly around the circumference.
After the assembly, the inflation hole on the fan wallboard can be opposite to the inflation groove a, and the inflation hole a can be opposite to the inflation groove b arranged on the outer wall of the spacer sleeve.
Because the spacer sleeve is provided with the inflation groove b opposite to the inflation hole a on the outer sleeve, the inflation hole a on the outer sleeve is not required to be opposite to the inflation hole b on the spacer sleeve during installation, and the communication between the inflation hole a and the inflation hole b can be realized. In a similar way, because the outer sleeve is provided with the inflation groove a opposite to the inflation hole on the fan wallboard, when the outer sleeve is arranged in the fan wallboard, the inflation hole on the fan wallboard is not required to be ensured to be opposite to the position of the inflation hole a on the outer sleeve, and the communication between the inflation hole a and the inflation hole of the fan wallboard can be realized.
During the use, the high-pressure air (or nitrogen gas) is connected to the inflation hole on the fan wallboard, and the inflation pressure is 20-30 kPa higher than the fan exhaust port pressure. The PTFE gasket in the sealing structure is heated to expand and is tightly matched with the inner shaft sleeve, so that the fixed particles in the conveying medium are prevented from causing adverse effects on the packing. Meanwhile, due to the adoption of the multiple tetrafluoro gaskets and the packing structures which are alternately arranged, the sealing effect of the sealing structure is further improved.
Furthermore, a transmission pin connecting structure is arranged between the opposite surfaces of the inner shaft sleeve and the lining sleeve, so that the inner shaft sleeve and the lining sleeve can synchronously rotate. The number of the driving pins is generally 2, the driving pins are arranged between the opposite end surfaces of the inner shaft sleeve and the lining and can be respectively positioned at two ends in the same straight radial direction.
Furthermore, two O-shaped sealing ring structures which are axially distributed at intervals are arranged between the matching surfaces of the inner shaft sleeve and the fan shaft. Two O-shaped sealing rings arranged on the inner wall of the inner shaft sleeve can prevent gas from leaking through a gap between the inner shaft sleeve and the fan shaft.
Furthermore, two O-shaped sealing ring structures which are axially distributed at intervals are arranged between the outer sleeve and the matching surface between the fan wallboards. After the inflation groove a is arranged, the two O-shaped sealing ring structures are respectively and correspondingly distributed at the two axial ends of the inflation groove a.
Has the advantages that: the dress seal structure on the fan axle that this patent provided has realized can avoiding in the medium solid particle to lead to the fact adverse effect's purpose to the accessory in the seal structure, and it can keep the reliability of sealing capacity after long-time operation.
Drawings
Fig. 1 is a schematic cross-sectional view of a seal structure according to the present patent.
Fig. 2 is a schematic side view of the solution according to the patent.
In the figure: 1 inner shaft sleeve, 2 outer sleeves, 21 inflation grooves a, 22 inflation holes a, 3 pressing covers, 31 screws, 32 gaskets, 4 packing, 5 tetrafluoro gaskets, 6 spacer sleeves, 61 inflation grooves b, 62 inflation holes b, 7O-shaped sealing rings I, 8O-shaped sealing rings II, 9 transmission pins, 10 fan shafts, 101 fan shaft sleeves, 102 bushings, 20 fan wallboards and 201 inflation holes.
Detailed Description
The drawings in the specification show the structure, ratio, size, etc. only for the purpose of matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and not for the purpose of limiting the present invention, so the present invention does not have the essential meaning in the art, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "front", "rear", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
The sealing structure mounted on the shaft of the blower shown in fig. 1 and 2 comprises an inner shaft sleeve 1 which is sleeved on the shaft 10 of the blower and is positioned between a fan shaft sleeve 101 and a bush 102, an outer sleeve 2 which is sleeved outside the inner shaft sleeve 1 and is fixedly mounted on a fan wallboard 20, a gland 3, a spacer bush, a plurality of packing sets 4 and a plurality of tetrafluoro gaskets 5.
The packing is also called sealing packing, and is usually woven by soft threadlike objects, and the packing is filled in a sealing cavity through a strip-shaped object with a square cross section, so that sealing is realized.
In the same way as the former matching mode, the fan shaft 10 is matched with the fan wallboard 20 through the fan shaft sleeve 101, and the fan wallboard is provided with an inflation hole 201 connected with high-pressure inflation equipment.
And a first O-shaped sealing ring 7 is arranged between the matching surfaces of the outer sleeve 2 and the fan wallboard 20. And a second O-shaped sealing ring 8 is arranged between the matching surfaces of the inner shaft sleeve 1 and the fan shaft 10. Specifically, two O-shaped sealing rings 8 which are distributed axially at intervals are arranged between the matching surfaces of the inner shaft sleeve 1 and the fan shaft 10. Two O-shaped sealing rings 8 arranged on the inner wall of the inner shaft sleeve 1 can well prevent gas from leaking through a gap between the inner shaft sleeve 1 and the fan shaft 10. Two O-shaped sealing rings I7 which are axially distributed at intervals are arranged between the outer sleeve 2 and the matching surface between the fan wallboard 20.
One end of the outer sleeve 2 is of an open port structure (the port of the end is provided with a flange plate extending outwards in the radial direction), and the other end of the outer sleeve is provided with an annular flange extending inwards in the radial direction.
The packing 4, the tetrafluoro gasket 5 and the spacer bush 6 are all sleeved outside the inner shaft sleeve 1 and are arranged in the outer sleeve 2. The spacer 6 is arranged between the two packing sets 4, and the packing sets 4 and the tetrafluoro gasket 5 are alternately arranged on two sides of the spacer 6. Gland 3 is established open port department of overcoat 2 is fixed on fan wallboard 20, and can be to the tight interior of overcoat 2 packing 4 tetrafluoro gasket 5 reaches spacer 6. As shown in fig. 1, three sets of packing 4 are provided between the open port of the outer sleeve 2 and the spacer 6, and two sets of tetrafluoro gaskets 5 are disposed on both sides of the packing 4 in the middle. Two groups of packing 4 are arranged between the annular flange of the outer sleeve 2 and the spacer 6, and a group of tetrafluoro gasket 5 is respectively arranged between the two groups of packing 4 and between the annular flange and the packing 4.
The flange of the outer sleeve opening end is overlapped with the cover plate flange of the gland 3 and is fixedly installed on the fan wallboard 20 through a screw 31. The screw 31 is fitted with a washer 32, and the washer 32 is sandwiched between the top cap of the screw 31 and the cover flange of the gland 3.
The sealing performance of the sealing structure is improved by utilizing the high thermal expansion coefficient and the self-lubricating property of the material of the PTFE gasket 5.
The PTFE gasket is known as Teflon (abbreviated as PTFE or F4), and is widely called "plastic king" for its application, and is known as "Teflon", or "Teflon" for its transliteration in chinese. The tetrafluoro gasket is understood in this patent to also include modified tetrafluoro gaskets. Graphite-filled PTFE gaskets and glass fiber-filled PTFE gaskets are commonly used for the modified PTFE gasket.
The graphite-filled PTFE gasket, also called graphite modified PTFE gasket or black PTFE gasket, is prepared by adding a certain amount of filler such as glass fiber, bronze powder, molybdenum disulfide, graphite, carbon fiber and the like into polytetrafluoroethylene resin, uniformly mixing at a high speed, molding, and sintering at a high temperature. Has excellent compressibility, recovery property and sealing property. Its unique properties and advanced characteristics exhibit sealability and torque retention. The disadvantages of conventional PTFE are overcome in terms of cold flow and material creep characteristics, while it is better able to hold bolt loads than conventional PTFE, thus improving seal durability and reducing flange maintenance. The graphite-filled PTFE gasket has the advantages of low friction coefficient, good compressive strength and improved wear resistance. Making its use much more than traditional PTFE, which improves the environment and saves cost. It is suitable for chemical, petrochemical, hydrocarbon reaction and power plant.
The glass fiber filled PTFE gasket, also called glass fiber modified PTFE gasket, is prepared by adding a certain amount of filler such as glass fiber, bronze powder, molybdenum disulfide, graphite, carbon fiber and the like into polytetrafluoroethylene resin, uniformly mixing at a high speed, molding, and sintering at a high temperature. Has excellent compressibility, recovery property and sealing property. Its unique properties and advanced characteristics exhibit sealability and torque retention. The disadvantages of conventional PTFE are overcome in terms of cold flow and material creep characteristics, while it is better able to hold bolt loads than conventional PTFE, thus improving seal durability and reducing flange maintenance. The glass fiber-filled PTFE gasket has the advantages that: the wear resistance and the chemical medium resistance are improved; making its use much more than traditional PTFE, which improves the environment and saves cost. It is suitable for chemical, petrochemical, hydrocarbon reaction and power plant. Is particularly suitable for sealing occasions of food, paper pulp, paper making, medical industry and the like for environment which is not allowed to pollute.
And inflation channels which can be communicated mutually and can be communicated with the inflation holes 201 on the fan wallboard 20 are arranged on the wall body of the spacer 6 and the wall body of the outer sleeve 2. As shown in fig. 1:
the outer wall of the jacket 2 is provided with an inflation groove a21 (annular groove), and the bottom wall of the inflation groove a21 is provided with a plurality of inflation holes a22 distributed at intervals. The inflation hole a22 can communicate the inflation groove a21 with the inner cavity of the jacket 2. The groove depth of the inflation groove a22 on the jacket 2 can be 1.5mm, 2mm or 2.5 mm. The number of the air inflation holes a22 arranged at the bottom of the air inflation groove a21 is 4 or 6. It is preferable that the plurality of air-filling holes a22 are arranged at regular intervals around the circumference.
The outer wall and the inner wall of the spacer 6 are respectively provided with an inflation groove b61, and the wall body of the spacer 6 is provided with a plurality of inflation holes b62 communicated with the two inflation grooves b 61. A plurality of the air charging holes b62 are distributed at intervals on the same ring. The groove depth of the inflation groove b61 on the spacer 6 is 2mm or 3 mm. The number of the air inflation holes b62 arranged between the bottoms of the two air inflation grooves b61 is 4 or 6. It is preferable that the plurality of air-filling holes b62 are arranged at regular intervals around the circumference.
After assembly, the air inflation hole 201 on the fan wall plate 20 can be opposite to the air inflation groove a21, and the air inflation hole a22 can be opposite to the air inflation groove b61 on the outer wall of the spacer 6.
Because the spacer 6 is provided with the inflation groove b61 opposite to the inflation hole a22 on the jacket 2, the inflation hole a22 on the jacket 2 can be communicated with the inflation hole b62 without ensuring that the inflation hole a22 on the jacket 2 is opposite to the inflation hole b62 on the spacer 6 during installation. Similarly, since the air charging groove a21 on the outer cover 2 is opposite to the air charging hole 201 on the blower wall panel 20, when the outer cover 2 is installed in the blower wall panel 20 (when the structure is installed in a sealed manner), it is not necessary to ensure that the positions of the air charging hole 201 on the blower wall panel 20 and the air charging hole a22 on the outer cover 2 are opposite, and the communication between the air charging hole a22 and the air charging hole 201 on the blower wall panel 20 can be realized. The processing technology difficulty and the assembly difficulty are obviously reduced.
During the use, the high-pressure air (or nitrogen gas) is connected to the inflation hole on the fan wallboard, and the inflation pressure is 20-30 kPa higher than the fan exhaust port pressure. The PTFE gasket in the sealing structure is heated to expand and is tightly matched with the inner shaft sleeve, so that the fixed particles in the conveying medium are prevented from causing adverse effects on the packing. Meanwhile, due to the adoption of the multiple tetrafluoro gaskets and the packing structures which are alternately arranged, the sealing effect of the sealing structure is further improved.
After the inflation groove a21 is provided, the two first O-rings 7 are respectively distributed at two ends of the inflation groove a21 in the axial direction.
A driving pin 9 connection structure is arranged between the opposite surfaces of the inner shaft sleeve 1 and the bush 102, so that the inner shaft sleeve 1 and the bush 102 can synchronously rotate. The number of the driving pins 9 is multiple, and the driving pins are distributed between the opposite end faces of the inner shaft sleeve and the lining sleeve at intervals along the circumference.
By means of the sealing structure, the blower can achieve better sealing effect, the service life of components in the sealing structure is long, operation is stable and reliable, cost is reduced, and safe conveying of conveying media is guaranteed.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be modified in many ways without departing from the spirit and scope of the present invention, and those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a dress seal structure on fan axle, its fan axle matches with the fan wallboard through the fan axle sleeve of suit, is equipped with on the fan wallboard and aerifys hole, its characterized in that: the fan shaft is also sleeved with a bushing and an inner shaft sleeve, and the inner shaft sleeve is arranged between the fan shaft sleeve and the bushing; the fan packing is characterized by also comprising an outer sleeve, a gland, a spacer bush, a plurality of packing and a plurality of gaskets, wherein the outer sleeve is sleeved outside the inner shaft sleeve and is fixedly arranged in the fan wallboard; o-shaped sealing ring structures are respectively arranged between the matching surfaces between the inner shaft sleeve and the fan shaft and between the matching surfaces between the outer sleeve and the fan wallboard;
one end of the outer sleeve is of an open port structure, and the port at the other end of the outer sleeve is provided with an annular flange extending inwards in the radial direction;
the packing, the gasket and the spacer bush are sleeved outside the inner shaft sleeve and are arranged in the outer sleeve; the spacer bush is arranged between the two packing sets, and the packing sets and the gaskets are alternately arranged on two sides of the spacer bush; the gland is arranged at the opening port of the outer sleeve, is fixed on a fan wallboard and can press the packing, the gasket and the spacer bush inwards;
and an inflation channel which can be communicated mutually and can be communicated with an inflation hole in the fan wallboard is arranged on the wall body of the spacer sleeve and the wall body of the outer sleeve.
2. A shaft mounted seal arrangement according to claim 1, wherein: the gasket is a teflon gasket.
3. A shaft mounted seal arrangement according to claim 1 or 2, wherein: three groups of packing are arranged between the open port of the outer sleeve and the spacer sleeve, and two groups of gaskets are arranged on two sides of the middle packing; two groups of packing are arranged between the annular flange of the outer sleeve and the spacer sleeve, and a group of gaskets is respectively arranged between the two groups of packing and between the annular flange and the packing.
4. A shaft mounted seal arrangement according to claim 3, wherein: an inflation groove a is formed in the outer wall of the outer sleeve, and a plurality of inflation holes a are formed in the bottom wall of the inflation groove a in a circle at intervals; the inflation hole a can be communicated with the inflation groove a and the inner cavity of the coat;
the outer wall and the inner wall of the spacer sleeve are respectively provided with an inflation groove b, and the wall body of the spacer sleeve is provided with a plurality of inflation holes b for communicating the two inflation grooves b; the plurality of inflation holes b are distributed on the same ring at intervals;
after the assembly, the inflation hole on the fan wallboard can be opposite to the inflation groove a, and the inflation hole a can be opposite to the inflation groove b arranged on the outer wall of the spacer sleeve.
5. A shaft mounted seal arrangement according to claim 4, wherein: two O-shaped sealing ring structures which are axially distributed at intervals are arranged between the outer sleeve and the matching surface between the fan wallboards, and the two O-shaped sealing ring structures are respectively and correspondingly distributed at the two ends of the inflatable groove a in the axial direction.
6. A shaft mounted seal arrangement according to claim 1 or 2, wherein: an inflation groove a is formed in the outer wall of the outer sleeve, and a plurality of inflation holes a are formed in the bottom wall of the inflation groove a in a circle at intervals; the inflation hole a can be communicated with the inflation groove a and the inner cavity of the coat;
the outer wall and the inner wall of the spacer sleeve are respectively provided with an inflation groove b, and the wall body of the spacer sleeve is provided with a plurality of inflation holes b for communicating the two inflation grooves b; the plurality of inflation holes b are distributed on the same ring at intervals;
after the assembly, the inflation hole on the fan wallboard can be opposite to the inflation groove a, and the inflation hole a can be opposite to the inflation groove b arranged on the outer wall of the spacer sleeve.
7. A shaft mounted seal arrangement according to claim 6, wherein: two O-shaped sealing ring structures which are axially distributed at intervals are arranged between the outer sleeve and the matching surface between the fan wallboards, and the two O-shaped sealing ring structures are respectively and correspondingly distributed at the two ends of the inflatable groove a in the axial direction.
8. A shaft mounted seal arrangement according to claim 1 or 2, wherein: and two O-shaped sealing ring structures which are axially distributed at intervals are arranged between the matching surfaces of the inner shaft sleeve and the fan shaft.
9. A shaft mounted seal arrangement according to claim 1 or 2, wherein: and two O-shaped sealing ring structures which are axially distributed at intervals are arranged between the outer sleeve and the matching surface between the fan wallboards.
10. A shaft mounted seal arrangement according to claim 1 or 2, wherein: and a transmission pin connecting structure is arranged between the opposite surfaces of the inner shaft sleeve and the lining sleeve, so that the inner shaft sleeve and the lining sleeve can synchronously rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023280744.3U CN214366716U (en) | 2020-12-29 | 2020-12-29 | Sealing structure mounted on shaft of blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023280744.3U CN214366716U (en) | 2020-12-29 | 2020-12-29 | Sealing structure mounted on shaft of blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214366716U true CN214366716U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023280744.3U Active CN214366716U (en) | 2020-12-29 | 2020-12-29 | Sealing structure mounted on shaft of blower |
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| CN (1) | CN214366716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673729A (en) * | 2022-01-30 | 2022-06-28 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth seal structure for bearing seat |
-
2020
- 2020-12-29 CN CN202023280744.3U patent/CN214366716U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673729A (en) * | 2022-01-30 | 2022-06-28 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth seal structure for bearing seat |
| CN114673729B (en) * | 2022-01-30 | 2023-11-24 | 山东省章丘鼓风机股份有限公司 | Combined labyrinth sealing structure for bearing pedestal |
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