CN213744118U - Forced sealing structure of fan - Google Patents
Forced sealing structure of fan Download PDFInfo
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- CN213744118U CN213744118U CN202022763473.0U CN202022763473U CN213744118U CN 213744118 U CN213744118 U CN 213744118U CN 202022763473 U CN202022763473 U CN 202022763473U CN 213744118 U CN213744118 U CN 213744118U
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- sealing
- main shaft
- seat
- gland
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Abstract
The utility model discloses a forced seal structure of fan, include: a hollow sealing seat, a sealing gland and a sealing material; the sealing seat is sleeved on the outer side of a main shaft of the fan, and a cavity is formed between the inner wall of the sealing seat and the outer side of the main shaft; the sealing material is arranged in the cavity and is in contact with the main shaft; the sealing gland is sleeved outside the main shaft of the fan, inserted into the first end of the sealing seat and used for compressing the sealing material in the cavity; the inner wall of the sealing seat is also provided with a heat dissipation device for dissipating heat of the sealing material and the sealing seat. The sealing of the main shaft is realized by the contact of the sealing material and the main shaft, the sealing gland is in plug-in butt joint with the sealing seat, the positioning is accurate, and the installation is simple; the heat dissipation device is used for dissipating heat of the sealing material and the sealing seat, so that a good heat dissipation effect is achieved, and the service life of the sealing structure is prolonged.
Description
Technical Field
The utility model relates to a forced seal structure of fan.
Background
The sealing device of the fan is mainly used for preventing the gas medium from leaking outwards, affecting the efficiency of the fan, causing environmental pollution, corroding parts outside the fan shell and the like. The existing sealing device of the fan usually adopts labyrinth seal, the labyrinth seal has gaps, and the gaps can cause gas to leak outwards, thereby causing environmental pollution, corrosion of parts outside the fan shell and the like.
SUMMERY OF THE UTILITY MODEL
According to the utility model discloses an aspect provides the forced seal structure of fan, include: a hollow sealing seat, a sealing gland and a sealing material; the sealing seat is sleeved on the outer side of a main shaft of the fan, and a cavity is formed between the inner wall of the sealing seat and the outer side of the main shaft; the sealing material is arranged in the cavity and is in contact with the main shaft; the sealing gland is sleeved outside the main shaft of the fan, inserted into the first end of the sealing seat and used for compressing the sealing material in the cavity; the inner wall of the sealing seat is also provided with a heat dissipation device for dissipating heat of the sealing material and the sealing seat. The sealing of the main shaft is realized by the contact of the sealing material and the main shaft, the sealing gland is in plug-in butt joint with the sealing seat, the positioning is accurate, and the installation is simple; the heat dissipation device is used for dissipating heat of the sealing material and the sealing seat, so that a good heat dissipation effect is achieved, and the service life of the sealing structure is prolonged.
In some embodiments, the gland includes a base and an insert portion that fits inside the first end of the gland, the insert portion being inserted into the first end of the gland. And the plug-in butt joint mode is accurate in positioning and convenient to install.
In some embodiments, a flange is provided inside the second end of the seal holder for retention of the sealing material such that the sealing material is confined between the flange and the insert portion of the gland. The flange and the sealing gland limit the position of the sealing material, so that the sealing material cannot turn over or move due to the rotation of the main shaft, and the sealing effect is ensured.
In some embodiments, the heat dissipation device is a heat dissipation groove formed in the inner wall of the seal seat, and is used for increasing the contact area between air and the seal material and the seal seat, and dissipating heat generated by friction between the seal material and the main shaft in time through the air in the heat dissipation groove, so that a good heat dissipation effect is achieved, and the service life of the seal structure is prolonged.
In some embodiments, the heat dissipation grooves are arranged in a plurality of numbers, are arranged on the inner wall of the sealing seat at intervals, and are provided with a plurality of heat dissipation grooves, so that the heat dissipation effect is further improved.
In some embodiments, the outer side of the seal holder and the outer side of the base are flush.
In some embodiments, at least one coaxial through hole is formed in the base of the sealing seat and the base of the sealing gland, the axis of the coaxial through hole is parallel to the axis of the main shaft, a bolt penetrates through the coaxial through hole to connect the sealing seat and the sealing gland together, the sealing gland and the sealing seat are connected together through tightening of the bolt, sealing materials in the cavity are compressed through axial force application, and the sealing effect is better.
In some embodiments, the sealing material is polytetrafluoroethylene, which is resistant to high temperature and corrosion, and has good sealing property and chemical stability.
Drawings
Fig. 1 is a schematic structural view of a press-in type sealing structure of a blower according to an embodiment of the present invention;
fig. 2 is an installation schematic diagram of a press-in type sealing structure of a fan according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-2 schematically show a press-in sealing structure of a fan according to an embodiment of the present invention. As shown, the sealing structure includes a hollow sealing seat 100 and a sealing gland 200 and a sealing material 300.
As shown in fig. 1 and 2, the sealing seat 100 is sleeved outside a main shaft 400 of the fan, and a cavity 110 is formed between an inner wall of the sealing seat 100 and the outside of the main shaft 400; the inner wall of the seal seat 100 is further provided with a heat dissipation device 120 for dissipating heat of the sealing material 300 and the seal seat 100, the heat dissipation device 120 is a heat dissipation groove formed in the inner wall of the seal seat 100 and used for increasing the contact area of air and the sealing material 300 with the seal seat 100, heat generated by friction of the sealing material 300 and the spindle 400 is dissipated timely through air heat dissipation in the heat dissipation groove, a good heat dissipation effect is achieved, and the service life of the sealing structure is prolonged. The radiating grooves are arranged in three, are arranged on the inner wall of the sealing seat 100 at intervals and are provided with a plurality of radiating grooves, so that the radiating effect is further improved. The flange 130 is provided inside the second end of the sealing seat 100 for the confinement of the sealing material 300 such that the sealing material 300 is confined between the flange 130 and the insertion portion 220 of the gland 200. The flange 130 and the gland 200 define the position of the packing material 300 so that the packing material 300 is not turned or moved by the rotation of the main shaft 400, ensuring a sealing effect.
As shown in fig. 1 and 2, the sealing material 300 is disposed in the cavity 110 and contacts the spindle 400; the sealing material 300 can be polytetrafluoroethylene, which is high temperature resistant, corrosion resistant, good in sealing performance and chemical stability, good in sealing effect and long in service life.
As shown in fig. 1 and 2, the gland 200 is sleeved outside the main shaft 400 of the fan, the gland 200 includes a base 210 and an insertion portion 220, the insertion portion 220 is adapted to the inner side of the first end of the seal holder 100, and the insertion portion 220 is inserted into the first end of the seal holder 100 and compresses the sealing material 300 in the cavity 110; the insertion portion 220 is inserted into the first end of the sealing seat 100. And the plug-in butt joint mode is accurate in positioning and convenient to install.
As shown in fig. 1 and 2, the outer side surface of the seal holder 100 is flush with the outer side surface of the base 210, at least one coaxial through hole 500 is arranged on the seal holder 100 and the base 210 of the seal gland 200, the axis of the coaxial through hole 500 is parallel to the axis of the spindle 400, a bolt passes through the coaxial through hole 500 to connect the seal holder 100 and the seal gland 200 together, the seal gland 200 and the seal holder 100 are connected together by screwing the bolt, the sealing material 300 in the cavity 110 is compressed by an axial force, and the sealing effect is better; in addition, after the sealing material 300 is sealed for a period of time, the situation that the sealing performance is reduced may occur, and at this time, the bolts may be adjusted to further seal the sealing material 300 in the cavity 110, so that the sealing performance of the sealing material 300 is improved under a higher pressure, the service life of the sealing material 300 is prolonged, the replacement is reduced, and the cost is saved.
The utility model discloses a forced seal structure leakproofness of fan is good, simple structure, and it is convenient to adjust, sets up heat abstractor 120 and dispels the heat to sealing material 300 and seal receptacle 100, prolongs sealing material 300's life, and the sexual valence relative altitude is installed on fan main shaft 400, and is sealed effectual, the no leakage phenomenon.
The above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (8)
1. Forced seal structure of fan, its characterized in that includes: a hollow sealing seat, a sealing gland and a sealing material;
the sealing seat is sleeved on the outer side of a main shaft of the fan, and a cavity is formed between the inner wall of the sealing seat and the outer side of the main shaft;
the sealing material is arranged in the cavity and is in contact with the main shaft;
the sealing gland is sleeved outside a main shaft of the fan, is inserted into the first end of the sealing seat and compresses the sealing material in the cavity;
and the inner wall of the sealing seat is also provided with a heat radiating device for radiating the sealing material and the sealing seat.
2. The forced sealing structure of blower of claim 1, wherein the gland comprises a base and an insert portion, the insert portion fitting inside the first end of the seal holder, the insert portion being inserted into the first end of the seal holder.
3. The forced air sealing structure of claim 2, wherein a flange is provided inside the second end of the sealing seat for limiting the sealing material, such that the sealing material is confined between the flange and the insertion portion of the gland.
4. The forced sealing structure of the blower according to claim 1, wherein the heat dissipation device is a heat dissipation groove formed on an inner wall of the sealing seat.
5. The forced sealing structure of the blower according to claim 4, wherein the heat dissipation grooves are arranged in a plurality and are arranged on the inner wall of the sealing seat at intervals.
6. The forced air sealing structure of claim 2, wherein the outer side surface of the sealing seat is flush with the outer side surface of the base.
7. The forced sealing structure of the blower according to any one of claims 1 to 6, wherein the base of the seal holder and the seal gland is provided with at least one coaxial through hole, the axis of the coaxial through hole is parallel to the axis of the main shaft, and a bolt passes through the coaxial through hole to connect the seal holder and the seal gland together.
8. The forced sealing structure of the blower according to any one of claims 1 to 6, wherein the sealing material is polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022763473.0U CN213744118U (en) | 2020-11-24 | 2020-11-24 | Forced sealing structure of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022763473.0U CN213744118U (en) | 2020-11-24 | 2020-11-24 | Forced sealing structure of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213744118U true CN213744118U (en) | 2021-07-20 |
Family
ID=76829930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022763473.0U Active CN213744118U (en) | 2020-11-24 | 2020-11-24 | Forced sealing structure of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213744118U (en) |
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2020
- 2020-11-24 CN CN202022763473.0U patent/CN213744118U/en active Active
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