CN217713023U - High leakproofness directly drive fan - Google Patents
High leakproofness directly drive fan Download PDFInfo
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- CN217713023U CN217713023U CN202221478718.8U CN202221478718U CN217713023U CN 217713023 U CN217713023 U CN 217713023U CN 202221478718 U CN202221478718 U CN 202221478718U CN 217713023 U CN217713023 U CN 217713023U
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Abstract
The utility model relates to a high leakproofness directly drive fan, including motor and spiral case, the spiral case suit in on the motor, be equipped with the sealing ring between spiral case and the motor, the epaxial impeller of installing of motor, the sealing ring is provided with sealed tooth, the number of teeth design of sealed tooth is 6 teeth, the sealing ring passes through the fix with screw on the spiral case, the spiral case suit is on the motor spindle, spiral case and motor bolted connection. The utility model adopts the polytetrafluoroethylene material, realizes zero clearance contact when the seal and the motor main shaft operate, thereby ensuring zero leakage at the back of the fan impeller; through adopting the polytetrafluoroethylene material, avoided fan rotor and sealed emergence to bump the condition that grinds and lead to motor spindle to damage, improved the security of fan operation, also greatly reduced user's cost of maintenance simultaneously, adopted the utility model discloses a sealed number of teeth and shape improve the leakproofness at fan wheel back, have reduced fan leakage loss, have improved fan efficiency.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a direct-drive fan with high sealing performance.
Background
The fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. The blower is a Chinese short for gas compression and gas conveying machinery, and generally comprises a ventilator, a blower and a wind driven generator.
The high-speed direct-drive fan is widely applied to the industries of aquaculture, factories, mines, tunnels, sewage treatment and the like, and the application scene of the high-speed direct-drive fan requires that the fan has the characteristics of high efficiency, environmental protection, energy conservation, safe and stable operation and the like.
The direct suit of its volute of current high-speed motor direct drive fan on the high-speed motor main shaft, and the sealed between its volute and the motor main shaft can not reach the requirement, and it is convenient that the air current can have afterwards and enter into in the motor main body from the clearance between volute and the motor main shaft when the impeller is high-speed rotatory, needs dismouting volute again to eliminate the clearance this moment, because the volute quality is heavier, the volume is great, and the dismouting of volute is more troublesome.
The improved sealing structure reduces the fit clearance between the rotor and the seal, reduces the gas leakage loss, and is one of effective ways for improving the efficiency of the fan. However, as the high-speed direct-drive fan has a high rotating speed, once the fan is vibrated and fluctuated during operation, the gap between the rotor and the stator is too small, the fan is easy to be rubbed, and the fan is damaged or even safety accidents are caused.
The back of the impeller of a part of existing direct-drive fan is not provided with impeller back seals, so that after high-pressure gas is thrown out of the impeller, part of the high-pressure gas reflows and leaks from the back of the impeller, and the leakage loss is large; the other part of the existing direct-drive fans are sealed by metal or alloy, but the fit clearance between the metal seal and the rotor is generally larger, and the sealing effect is not obvious.
Disclosure of Invention
In order to overcome not enough and the defect that exists among the prior art, the utility model provides a high leakproofness directly drive fan, the utility model discloses be equipped with the sealing ring between spiral case and motor, polytetrafluoroethylene is chooseed for use to the sealing ring material, and the material is softer, can with motor shaft in close contact with, sealing performance is good, and when the fan ran, sealed interference part will be ground according to the operational aspect to zero when having guaranteed the fan operation is leaked.
In order to solve the technical problems, the invention adopts the following technical scheme: the high-sealing direct-drive fan comprises a motor and a volute, wherein the volute is sleeved on the motor, a sealing ring is arranged between the volute and the motor, and an impeller is mounted on a shaft of the motor.
Through above-mentioned technical scheme, be equipped with the sealing ring between spiral case and motor, polytetrafluoroethylene is chooseed for use to the sealing ring material, and the material is softer, can with motor shaft in close contact with, sealing performance is good, and when the fan operates, sealed interference part will be ground off according to the behavior to zero leakage when having guaranteed the fan operation.
Further, the sealing ring is provided with sealing teeth, the number of teeth of the sealing teeth is designed to be 6, and the sealing teeth are helical teeth.
Through above-mentioned technical scheme, sealed tooth number design is 6 teeth, and when the profile of tooth was the skewed tooth, sealed effect was the best, effectively avoided leaking.
Furthermore, the sealing ring is fixed on the volute through a screw, so that the sealing ring is conveniently fixed and is not easy to drop in the working process, and normal work is guaranteed.
Furthermore, the volute is sleeved on the motor spindle, the volute is connected with the motor through bolts, and the volute and the motor are fixed through the bolts, so that normal work is guaranteed.
Furthermore, the sealing ring is made of polytetrafluoroethylene, and compared with a traditional metal or alloy sealing ring, the sealing ring made of polytetrafluoroethylene is lower in price, and the manufacturing cost of the fan is reduced; the sealing ring made of polytetrafluoroethylene is light in weight, so that the weight of the whole unit is reduced, and the overall market competitiveness of the fan is improved.
Compared with the prior art, the invention has the beneficial effects that:
1. adopt the utility model discloses a sealed number of teeth and shape have improved the leakproofness at fan wheel back greatly, have reduced fan leakage loss, have improved fan efficiency.
2. The utility model realizes zero clearance contact between the sealing and the motor main shaft when in operation by adopting the polytetrafluoroethylene material, thereby ensuring zero leakage at the back of the fan impeller; by adopting the polytetrafluoroethylene material, the condition that the motor spindle is damaged due to the fact that the fan rotor and the seal are in collision and abrasion is avoided, the running safety of the fan is improved, and meanwhile the maintenance cost of a user is greatly reduced.
3. Compared with the traditional metal or alloy sealing ring, the sealing ring made of polytetrafluoroethylene in the utility model has lower price, thus reducing the manufacturing cost of the fan; the sealing ring made of polytetrafluoroethylene is light in weight, so that the weight of the whole unit is reduced, and the overall market competitiveness of the fan is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the present invention without a sealing ring installed;
FIG. 3 is a schematic structural view of the sealing ring at the position A;
fig. 4 is a schematic structural view of the sealing tooth of the present invention;
fig. 5 is a schematic structural diagram of the volute of the present invention.
Wherein, 1, a motor; 2. a volute; 3. an impeller; 4. a seal ring; 401. a seal tooth; 5. and (4) screws.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following specific embodiments.
Referring to fig. 1-3, a high-sealing direct-drive fan comprises a motor 1 and a volute 2, wherein the volute 2 is sleeved on the motor 1, the volute 2 is sleeved on a main shaft of the motor 1, the volute 2 is in bolted connection with the motor 1, the volute 2 and the motor 1 are fixed through the bolted connection to ensure normal work, a sealing ring 4 is made of polytetrafluoroethylene, the sealing ring 4 is arranged between the volute 2 and the motor 1, the sealing ring 4 is made of polytetrafluoroethylene, is soft in texture and can be in close contact with an axis of the motor 1, the sealing performance is good, and when the fan runs, a sealing interference part can be ground according to the running condition, so that zero leakage when the fan runs is ensured; in addition, compared with the traditional metal or alloy sealing ring 4, the polytetrafluoroethylene sealing ring 4 has lower price, and the manufacturing cost of the fan is reduced; the sealing ring 4 made of polytetrafluoroethylene is light in weight, so that the weight of the whole unit is reduced, and the overall market competitiveness of the fan is improved; be equipped with sealing ring 4 between spiral case 2 and the motor 1, sealing ring 4 passes through screw 5 to be fixed on spiral case 2, and the convenience is fixed sealing ring 4, and difficult emergence is dropped in the course of the work, guarantees normal work, the epaxial impeller 3 of installing of motor 1, sealing ring 4 is provided with sealed tooth 401, sealed tooth 401's number of teeth design is 6 teeth, sealed tooth 401 is the skewed tooth, and sealed effect is best, effectively avoids leaking.
Example 1
In the embodiment, the sealing ring 4 is made of polytetrafluoroethylene, the sealing ring 4 is soft in texture and can be in close contact with the shaft of the motor 1, the sealing performance is good, and when the fan runs, a sealing interference part can be ground according to the running condition, so that zero leakage when the fan runs is ensured; in addition, compared with the traditional metal or alloy sealing ring 4, the polytetrafluoroethylene sealing ring 4 has lower price, and the manufacturing cost of the fan is reduced; the sealing ring 4 made of polytetrafluoroethylene is light in weight, so that the weight of the whole unit is reduced, and the overall market competitiveness of the fan is improved; sealing ring 4 is provided with sealed tooth 401, the tooth number design of sealed tooth 401 is 6 teeth, sealed tooth 401 is the skewed tooth, and sealed effect is best, effectively avoids leaking.
Example 2
In this embodiment, 2 suits of spiral case are in on the motor 1, 2 suits of spiral case are on the main shaft of motor 1, and spiral case 2 and motor 1 bolted connection are fixed with spiral case 2 and motor 1 through bolted connection, guarantee normal work, and sealing ring 4 passes through screw 5 to be fixed on spiral case 2, conveniently fixes sealing ring 4, and difficult emergence is dropped in the course of the work, guarantees normal work.
It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only, since various other embodiments will become apparent to those skilled in the art upon reference to the following detailed description.
Claims (5)
1. The high-sealing direct-drive fan comprises a motor (1) and a volute (2) and is characterized in that the volute (2) is sleeved on the motor (1), a sealing ring (4) is arranged between the volute (2) and the motor (1), and an impeller (3) is mounted on a shaft of the motor (1).
2. The direct-drive fan with high sealing performance according to claim 1, wherein the sealing ring (4) comprises sealing teeth (401), the number of the sealing teeth (401) is 6, and the sealing teeth (401) are helical teeth.
3. A high-tightness direct-drive fan according to claim 1 or 2, characterized in that the sealing ring (4) is fixed on the volute (2) by screws (5).
4. The high-sealing direct-drive fan according to claim 3, wherein the volute (2) is sleeved on the main shaft of the motor (1), and the volute (2) is connected with the motor (1) through a bolt.
5. The direct-drive fan with high sealing performance according to claim 1, wherein the sealing ring (4) is made of tetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221478718.8U CN217713023U (en) | 2022-06-14 | 2022-06-14 | High leakproofness directly drive fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221478718.8U CN217713023U (en) | 2022-06-14 | 2022-06-14 | High leakproofness directly drive fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217713023U true CN217713023U (en) | 2022-11-01 |
Family
ID=83800593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221478718.8U Active CN217713023U (en) | 2022-06-14 | 2022-06-14 | High leakproofness directly drive fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217713023U (en) |
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2022
- 2022-06-14 CN CN202221478718.8U patent/CN217713023U/en active Active
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