CN219711854U - Centrifugal ventilator with double-layer sealing structure - Google Patents
Centrifugal ventilator with double-layer sealing structure Download PDFInfo
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- CN219711854U CN219711854U CN202223555657.3U CN202223555657U CN219711854U CN 219711854 U CN219711854 U CN 219711854U CN 202223555657 U CN202223555657 U CN 202223555657U CN 219711854 U CN219711854 U CN 219711854U
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- 238000007789 sealing Methods 0.000 title claims abstract description 101
- 230000000903 blocking effect Effects 0.000 claims description 9
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000010410 layer Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
The utility model discloses a centrifugal ventilator with a double-layer sealing structure, which comprises a casing, wherein a servo motor is fixedly connected to the left side of the casing, a rotating opening is formed in the left side of the casing, a connecting ring is fixedly connected to the inner wall of the rotating opening, a rotating shaft is fixedly connected to the output end of the servo motor, and a rotating ring is fixedly connected to the surface of the rotating shaft. According to the utility model, the servo motor drives the rotating shaft to rotate, so that the impeller is driven to rotate, the center of the impeller is further driven to form negative pressure, and the formed wind pressure continuously impacts the second sealing ring in the shell, so that the second sealing ring extrudes the first sealing ring, and the first sealing ring and the second sealing ring are provided with leftward force and generate a closing trend due to the fact that the first sealing ring and the second sealing ring are both positioned in the inclined groove, and further the sealing specific pressure is increased by using unbalanced force, so that the sealing effect between the connecting ring and the rotating ring is improved.
Description
Technical Field
The utility model relates to the technical field of centrifugal ventilators, in particular to a centrifugal ventilator with a double-layer sealing structure.
Background
The centrifugal ventilator mainly comprises: impeller, casing, shaft coupling, axle. When the impeller rotates, the air between the blades is subjected to centrifugal force to obtain kinetic energy (dynamic pressure head) to be discharged from the periphery of the impeller, and the kinetic energy is guided by the volute-shaped casing to flow towards the outlet of the ventilator, so that negative pressure is formed at the center of the impeller, and external air flow continuously flows into and is supplemented by the air flow, so that the air can be discharged by the ventilator.
At present, the rotating shaft of the existing centrifugal ventilator usually penetrates through the casing, the joint of the rotating shaft and the casing is required to be sealed through a sealing structure, the sealing performance of the casing is increased, the existing sealing structure is of a single-layer sealing structure, the sealing effect is more general, after the sealing structure is installed, the wind pressure is continuously increased due to the fact that the rotating shaft continuously rotates, the single-layer sealing structure is easy to wear out, the rotating shaft is unstable to rotate, the wind pressure is relieved from a gap between the rotating shaft and the casing, the wind pressure is reduced, and the ventilation effect cannot reach the expected effect.
Therefore, the existing sealing structure needs to be modified, and the problem that the single-layer sealing structure is easy to wear out and the rotation of the rotating shaft is unstable is effectively prevented, so that the pressure of wind is relieved from a gap between the rotating shaft and the shell.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model aims to provide a centrifugal ventilator with a double-layer sealing structure, which has the advantages of improving the sealing effect between a rotating shaft and a machine shell by utilizing negative pressure, and solves the problems that the rotating shaft rotates unstably due to the fact that the single-layer sealing structure is easy to wear out, so that pressure is relieved from a gap between the rotating shaft and the machine shell by wind pressure.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a centrifugal fan with double-deck seal structure, includes the casing, the left side fixedly connected with servo motor of casing, the rotation mouth has been seted up in the left side of casing, the inner wall fixedly connected with go-between of rotation mouth, servo motor's output fixedly connected with rotation axis, the fixed surface of rotation axis is connected with the go-between, and the go-between is located the inside of go-between, the ring channel has been seted up to the symmetry between go-between and the go-between, two roll connection has the ball between the ring channel, the inclined groove has been seted up to the symmetry between go-between and the go-between, two the spread groove has been seted up to the cell wall symmetry of inclined groove, the inner wall fixedly connected with first sealing washer of spread groove, and first sealing washer and spread groove sliding connection, the right side of first sealing washer is provided with the second sealing washer, and the cooperation of second sealing washer and inclined groove is used, the other end fixedly connected with impeller of rotation axis, the right side fixedly connected with suction disc of casing, and suction disc and impeller cooperation are used.
As the preferable mode of the utility model, the shape of the connecting ring is H-shaped, the surface of the connecting ring is symmetrically and fixedly connected with the sealing ring, and the sealing ring is clamped with the connecting ring.
Preferably, the retainer is fixedly connected to both sides of the ball.
Preferably, the first sealing ring and the second sealing ring are both trapezoidal in shape.
As the preferable mode of the utility model, the inner walls of the two annular grooves are symmetrically and fixedly connected with the blocking ring, and the blocking ring is matched with the first sealing ring.
In the utility model, preferably, a clamping groove is formed on the right side of the first sealing ring, and the clamping groove is clamped with the second sealing ring.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the servo motor drives the rotating shaft to rotate, so that the impeller is driven to rotate, the center of the impeller is further driven to form negative pressure, and the formed wind pressure continuously impacts the second sealing ring in the shell, so that the second sealing ring extrudes the first sealing ring, and the first sealing ring and the second sealing ring are provided with leftward force and generate a closing trend due to the fact that the first sealing ring and the second sealing ring are both positioned in the inclined groove, and further the sealing specific pressure is increased by using unbalanced force, so that the sealing effect between the connecting ring and the rotating ring is improved.
2. According to the utility model, through the arrangement of the H-shaped connecting ring, the connection between the connecting ring and the rotating opening is improved, and through the arrangement of the sealing ring, the sealing effect between the connecting ring and the rotating opening is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is an enlarged schematic view of fig. 1 a according to the present utility model.
In the figure: 1. a housing; 2. a servo motor; 3. a rotating port; 4. a connecting ring; 5. a rotation shaft; 6. a rotating ring; 7. an annular groove; 8. a ball; 9. an inclined groove; 10. a connecting groove; 11. a first seal ring; 12. a second seal ring; 13. an impeller; 14. a suction disc; 15. a seal ring; 16. a retainer; 17. a blocking ring; 18. a clamping groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 2, the centrifugal ventilator with a double-layer sealing structure provided by the utility model comprises a casing 1, wherein a servo motor 2 is fixedly connected to the left side of the casing 1, a rotating opening 3 is formed in the left side of the casing 1, a connecting ring 4 is fixedly connected to the inner wall of the rotating opening 3, a rotating shaft 5 is fixedly connected to the output end of the servo motor 2, a rotating ring 6 is fixedly connected to the surface of the rotating shaft 5, the rotating ring 6 is positioned in the connecting ring 4, annular grooves 7 are symmetrically formed between the connecting ring 4 and the rotating ring 6, balls 8 are in rolling connection between the two annular grooves 7, inclined grooves 9 are symmetrically formed between the connecting ring 4 and the rotating ring 6, connecting grooves 10 are symmetrically formed in the groove walls of the two inclined grooves 9, a first sealing ring 11 is fixedly connected to the inner wall of the connecting groove 10, the first sealing ring 11 is in sliding connection with the connecting groove 10, a second sealing ring 12 is arranged on the right side of the first sealing ring 11, the second sealing ring 12 is matched with the inclined grooves 9, an impeller 13 is fixedly connected to the other end of the rotating shaft 5, a suction disc 14 is fixedly connected to the right side of the casing 1, and the suction disc 14 is matched with the impeller 13.
Referring to fig. 2, the connecting ring 4 is H-shaped, the surface of the connecting ring 4 is symmetrically and fixedly connected with a sealing ring 15, and the sealing ring 15 is clamped with the connecting ring 4.
As a technical optimization scheme of the utility model, the connection between the connecting ring 4 and the rotating port 3 is improved through the arrangement of the H-shaped connecting ring 4, and the sealing effect between the connecting ring 4 and the rotating port 3 is improved through the arrangement of the sealing ring 15.
Referring to fig. 2, a cage 16 is fixedly coupled to both sides of the ball 8.
As a technical optimization scheme of the utility model, the arrangement of the retainer 16 serves to limit the movement track of the balls 8, so that the balls 8 can be balanced when rotating.
Referring to fig. 2, the first seal ring 11 and the second seal ring 12 are each provided in a trapezoid shape.
As a technical optimization scheme of the utility model, the arrangement of the first sealing ring 11 and the second sealing ring 12 with trapezoid shapes can improve the stress area of wind pressure, thereby achieving better sealing effect.
Referring to fig. 2, the inner walls of the two annular grooves 7 are symmetrically and fixedly connected with a blocking ring 17, and the blocking ring 17 is matched with the first sealing ring 11 for use.
As a technical optimization scheme of the utility model, the limit effect on the position of the first sealing ring 11 is achieved through the arrangement of the blocking ring 17, so that the sealing effect of the device is more stable.
Referring to fig. 2, a clamping groove 18 is formed on the right side of the first sealing ring 11, and the clamping groove 18 is clamped with the second sealing ring 12.
As a technical optimization scheme of the utility model, the contact area of the first sealing ring 11 and the second sealing ring 12 is increased through the arrangement of the clamping groove 18, so that the connection of the first sealing ring 11 and the second sealing ring 12 is improved.
The working principle and the using flow of the utility model are as follows: when the centrifugal ventilator is used, the servo motor 2 is started to drive the impeller 13 to rotate through the rotating shaft 5, at the moment, the rotating ring 6 on the surface of the rotating shaft 5 rotates in the connecting ring 4 through the balls 8, so that negative pressure is formed at the central part of the impeller 13, external air flow continuously flows into the connecting ring through the suction disc 14 to supplement the air, the casing 1 can discharge air, a large amount of air flow is accumulated in the casing 1, a gap between the rotating port 3 and the connecting ring 4 is subjected to larger impact, at the moment, the sealing effect between the rotating port 3 and the connecting ring 4 is improved through the sealing ring 15, the second sealing ring 12 is subjected to leftward thrust, the first sealing ring 11 is pushed leftwards, and the first sealing ring 11 and the second sealing ring 12 are positioned in the inclined groove 9, so that the first sealing ring 11 and the second sealing ring 12 have leftward force and generate a pressing and closing trend, and the sealing specific pressure is increased through the unbalanced force, the sealing effect between the connecting ring 4 and the rotating ring 6 is improved, the double-layer sealing effect is achieved, the sealing effect of the sealing device can be more stable through the arrangement of the blocking ring 17.
To sum up: this centrifugal fan with double-deck seal structure through casing 1, servo motor 2, rotation mouth 3, go-between 4, rotation axis 5, rotatory ring 6, ring channel 7, ball 8, inclined groove 9, spread groove 10, first sealing washer 11, second sealing washer 12, impeller 13 and the cooperation of inhaling the dish 14 use, has solved that single-layer seal structure is easily worn out and has led to the pivot rotation unstable for the wind pressure carries out the problem of pressure release from the gap between pivot and the casing.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Centrifugal fan with double-deck seal structure, including casing (1), its characterized in that: the utility model discloses a suction disc, including casing (1), servo motor (2) is fixedly connected with in the left side of casing (1), rotation mouth (3) has been seted up in the left side of casing (1), inner wall fixedly connected with go-between (4) of rotation mouth (3), the output fixedly connected with rotation axis (5) of servo motor (2), the fixed surface of rotation axis (5) is connected with rotatory ring (6), and rotatory ring (6) are located the inside of go-between (4), annular groove (7) have been seted up to symmetry between go-between (4) and rotatory ring (6), two roll connection has ball (8) between annular groove (7), inclined groove (9) have been seted up to symmetry between go-between (4) and rotatory ring (6), two inclined groove (9) have been seted up to the cell wall symmetry of inclined groove (10), the inner wall fixedly connected with first sealing washer (11) of go-between (10), and first sealing washer (11) and spread groove (10) sliding connection, the right side of first sealing washer (11) is provided with second (12), and second sealing washer (9) are connected with impeller (13) fixedly with the other end of rotation axis (1), and the suction disc (14) is matched with the impeller (13).
2. A centrifugal fan having a double-layer sealing structure according to claim 1, wherein: the connecting ring (4) is H-shaped, the surface of the connecting ring (4) is symmetrically and fixedly connected with a sealing ring (15), and the sealing ring (15) is clamped with the connecting ring (4).
3. A centrifugal fan having a double-layer sealing structure according to claim 1, wherein: both sides of the ball (8) are fixedly connected with a retainer (16).
4. A centrifugal fan having a double-layer sealing structure according to claim 1, wherein: the shapes of the first sealing ring (11) and the second sealing ring (12) are trapezoidal.
5. A centrifugal fan having a double-layer sealing structure according to claim 1, wherein: the inner walls of the two annular grooves (7) are symmetrically and fixedly connected with blocking rings (17), and the blocking rings (17) are matched with the first sealing ring (11).
6. A centrifugal fan having a double-layer sealing structure according to claim 1, wherein: a clamping groove (18) is formed in the right side of the first sealing ring (11), and the clamping groove (18) is clamped with the second sealing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223555657.3U CN219711854U (en) | 2022-12-29 | 2022-12-29 | Centrifugal ventilator with double-layer sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223555657.3U CN219711854U (en) | 2022-12-29 | 2022-12-29 | Centrifugal ventilator with double-layer sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711854U true CN219711854U (en) | 2023-09-19 |
Family
ID=88015251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223555657.3U Active CN219711854U (en) | 2022-12-29 | 2022-12-29 | Centrifugal ventilator with double-layer sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711854U (en) |
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2022
- 2022-12-29 CN CN202223555657.3U patent/CN219711854U/en active Active
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