CN210920269U - Anti-backflow device for pipeline of range hood - Google Patents
Anti-backflow device for pipeline of range hood Download PDFInfo
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- CN210920269U CN210920269U CN201921941141.8U CN201921941141U CN210920269U CN 210920269 U CN210920269 U CN 210920269U CN 201921941141 U CN201921941141 U CN 201921941141U CN 210920269 U CN210920269 U CN 210920269U
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- pipeline
- bevel gear
- sleeve
- sealing
- fixed
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- 238000007789 sealing Methods 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000006096 absorbing agent Substances 0.000 claims abstract description 9
- 239000006233 lamp black Substances 0.000 claims abstract description 9
- 230000003405 preventing effect Effects 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a lampblack absorber pipeline anti-return device, including first pipeline, the fixed second pipeline that has cup jointed in both ends of first pipeline, the inside both ends of first pipeline are fixed with the mounting bracket, it is connected with the threaded rod to rotate on the mounting bracket, the fixed first bevel gear that has cup jointed on the threaded rod, the both ends of mounting bracket side are fixed with the guiding axle, the limiting plate has been cup jointed in the activity on the guiding axle, the side-mounting of limiting plate has the closing plate, the closing plate inserts in the second pipeline, the closing plate is kept away from one side of closing plate and is installed the thread bush. The utility model realizes the purpose of automatic closing and opening by setting the meshing transmission of the first bevel gear and the second bevel gear, can play a good role of sealing and preventing taint of odor, and the sealing ring enhances the sealing effect; meanwhile, the second spring pushes the connecting rod and the sleeve, so that the blocking effect of the sealing plate on the second pipeline is improved, and the backflow preventing effect of the device is improved.
Description
Technical Field
The utility model relates to a lampblack absorber technical field especially relates to a lampblack absorber pipeline anti-return device.
Background
With the improvement of the living standard of people, the range hood has been widely applied, but the odor of the kitchen public flue is reduced due to various reasons. The taint of odor is very common, and the life quality of residents is seriously influenced. Various methods have been devised to eliminate the smell of the public flue.
The existing backflow prevention device still has certain defects in use, and the condition that the air port cannot be completely closed after a period of time of use to cause odor reversion occurs, so that the backflow prevention device is short in service life, and certain adverse effects are caused in the actual use process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a backflow preventing device for a range hood pipeline.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a backflow preventer for a range hood pipeline comprises a first pipeline, wherein second pipelines are fixedly sleeved at two ends of the first pipeline, mounting frames are fixed at two ends of the inner part of the first pipeline, threaded rods are rotatably connected to the mounting frames, first bevel gears are fixedly sleeved on the threaded rods, guide shafts are fixed at two ends of the side surfaces of the mounting frames, limiting plates are movably sleeved on the guide shafts, sealing plates are mounted on the side surfaces of the limiting plates and inserted into the second pipelines, threaded sleeves are mounted on one sides of the limiting plates, which are far away from the sealing plates, and are in threaded connection with the threaded rods, a first spring is mounted between the limiting plates and the mounting frames, a motor is mounted at the top of the first pipeline, an output shaft of the motor is inserted into the inner part of the first pipeline and is connected with a rotating shaft, and a second bevel gear is fixedly sleeved, the second bevel gear is in meshed transmission with the first bevel gear.
Preferably, a fixed shaft is fixed on the side face of the sealing plate, a second convex block is installed at one end, far away from the sealing plate, of the fixed shaft, a sleeve is connected to the second convex block in a rotating mode, a first convex block is arranged on the inner wall of the second pipeline, a connecting rod is connected to the first convex block in a rotating mode, and the connecting rod is inserted into the sleeve and is movably connected with the sleeve.
Preferably, a second spring is arranged between the top of the connecting rod and the top of the inner part of the sleeve.
Preferably, the first pipeline and the second pipeline are both hollow cylinder structures, and the first pipeline and the second pipeline are coaxial.
Preferably, the limiting plate is of a cylindrical structure, and the diameter of the limiting plate is equal to the inner diameter of the first pipeline.
Preferably, the sealing plate is of a cylindrical structure, the diameter of the sealing plate is equal to the inner diameter of the second pipeline, and a sealing ring is arranged between the sealing plate and the second pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
1. when the utility model is used, the oil smoke is transmitted from the left second pipeline of the device to the first pipeline, and is discharged through the right second pipeline, the starting motor drives the rotating shaft, the rotating shaft drives the second bevel gear, the second bevel gear drives the first bevel gear through meshing transmission, the first bevel gear drives the threaded rod, the threaded rod drives the threaded sleeve through meshing transmission, the two threaded sleeves are close to each other to drive the two limiting plates to be close to each other, at the moment, the first spring is in a compression state, the limiting plates drive the sealing plates, the sealing plates are separated from the second pipeline, the first pipeline and the second pipeline are communicated, after the smoke discharge is finished, the motor is reversely started, the motor drives the rotating shaft, the rotating shaft drives the second bevel gear, the second bevel gear drives the first bevel gear through meshing transmission, the first bevel gear drives the threaded rod, the threaded sleeve is driven by the, at the moment, the first spring returns to a normal state, the limiting plate drives the sealing plate, the sealing plate enters the second pipeline to plug the second pipeline, and the sealing effect is enhanced through the sealing ring, so that the purposes of automatic closing and opening are achieved, and a good sealing and odor tainting prevention effect can be achieved;
2. the utility model discloses in when the closing plate breaks away from the second pipeline, the closing plate drives the fixed axle, the fixed axle drives the second lug, the second lug drives the sleeve, the sleeve drives the connecting rod, the connecting rod slides at the sleeve, the second spring is in compression state, the connecting rod rotates around first lug, when closing plate shutoff second pipeline, the closing plate drives the fixed axle, the fixed axle drives the second lug, the second lug drives the sleeve, the sleeve drives the connecting rod, the connecting rod slides in the sleeve, the second spring is in the extension state, the shutoff effect of closing plate to the second pipeline has been increased, the anti-reflux effect of device has been increased.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of a backflow prevention device for a range hood pipeline provided by the present invention;
fig. 2 is a schematic structural view of a second embodiment of the backflow prevention device for the range hood pipeline provided by the present invention;
fig. 3 is the utility model provides a second pipeline side cross-sectional view of lampblack absorber pipeline anti-return device.
In the figure: the device comprises a first pipeline 1, a mounting rack 2, a first bevel gear 3, a threaded rod 4, a guide shaft 5, a first spring 6, a threaded sleeve 7, a limiting plate 8, a sealing plate 9, a sealing ring 10, a second pipeline 11, a motor 12, a rotating shaft 13, a second bevel gear 14, a fixed shaft 15, a first lug 16, a connecting rod 17, a sleeve 18, a second lug 19 and a second spring 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The first embodiment is as follows:
referring to fig. 1, a backflow preventer for a range hood pipeline, comprising a first pipeline 1, a second pipeline 11 fixedly sleeved at two ends of the first pipeline 1, a mounting frame 2 fixed at two ends of the inside of the first pipeline 1, a threaded rod 4 rotatably connected to the mounting frame 2, a first bevel gear 3 fixedly sleeved on the threaded rod 4, a guide shaft 5 fixed at two ends of the side surface of the mounting frame 2, a limiting plate 8 movably sleeved on the guide shaft 5, a sealing plate 9 installed at the side surface of the limiting plate 8, the sealing plate 9 inserted into the second pipeline 11, a threaded sleeve 7 installed at one side of the limiting plate 8 away from the sealing plate 9, the threaded sleeve 7 connected with the threaded rod 4 through threads, a first spring 6 installed between the limiting plate 8 and the mounting frame 2, a motor 12 installed at the top of the first pipeline 1, an output shaft of the motor 12 inserted into the inside of the first pipeline 1 and connected with a rotating shaft 13, the second bevel gear 14 is in meshing transmission with the first bevel gear 3.
The first pipeline 1 and the second pipeline 11 are both hollow cylinder structures, and the first pipeline 1 and the second pipeline 11 are coaxial.
Wherein, limiting plate 8 is the cylinder structure, and the diameter of limiting plate 8 is equal with the internal diameter of first pipeline 1.
Wherein, the sealing plate 9 is a cylinder structure, the diameter of the sealing plate 9 is equal to the inner diameter of the second pipeline 11, and a sealing ring 10 is arranged between the sealing plate 9 and the second pipeline 11.
Example two:
referring to fig. 2-3, a backflow preventer for a range hood pipeline, comprising a first pipeline 1, a second pipeline 11 fixedly sleeved at two ends of the first pipeline 1, a mounting frame 2 fixed at two ends of the inside of the first pipeline 1, a threaded rod 4 rotatably connected to the mounting frame 2, a first bevel gear 3 fixedly sleeved on the threaded rod 4, a guide shaft 5 fixed at two ends of the side surface of the mounting frame 2, a limiting plate 8 movably sleeved on the guide shaft 5, a sealing plate 9 installed at the side surface of the limiting plate 8, the sealing plate 9 inserted into the second pipeline 11, a threaded sleeve 7 installed at one side of the limiting plate 8 far from the sealing plate 9, the threaded sleeve 7 in threaded connection with the threaded rod 4, a first spring 6 installed between the limiting plate 8 and the mounting frame 2, a motor 12 installed at the top of the first pipeline 1, a rotating shaft 13 connected with an output shaft of the motor 12 inserted into the inside of the first pipeline 1, the second bevel gear 14 is in meshing transmission with the first bevel gear 3.
Wherein, a fixed shaft 15 is fixed on the side surface of the sealing plate 9, a second bump 19 is installed at one end of the fixed shaft 15 far away from the sealing plate 9, a sleeve 18 is rotatably connected on the second bump 19, a first bump 16 is arranged on the inner wall of the second pipeline 11, a connecting rod 17 is rotatably connected on the first bump 16, and the connecting rod 17 is inserted into the sleeve 18 and movably connected with the sleeve 18.
Wherein a second spring 20 is arranged between the top of the link 17 and the top inside the sleeve 18.
The first pipeline 1 and the second pipeline 11 are both hollow cylinder structures, and the first pipeline 1 and the second pipeline 11 are coaxial.
Wherein, limiting plate 8 is the cylinder structure, and the diameter of limiting plate 8 is equal with the internal diameter of first pipeline 1.
Wherein, the sealing plate 9 is a cylinder structure, the diameter of the sealing plate 9 is equal to the inner diameter of the second pipeline 11, and a sealing ring 10 is arranged between the sealing plate 9 and the second pipeline 11.
The working principle is as follows: when in use, the oil smoke is transmitted to the first pipeline 1 from the second pipeline 11 on the left side of the device, and is discharged through the second pipeline 11 on the right side, the motor 13 is started, the motor 13 drives the rotating shaft 14, the rotating shaft 14 drives the second bevel gear 14, the second bevel gear 14 drives the first bevel gear 3 through meshing transmission, the first bevel gear 3 drives the threaded rod 4, the threaded rod 4 drives the threaded sleeves 7 through meshing transmission, the two threaded sleeves 7 approach to each other to drive the two limiting plates 8 to approach to each other, at the moment, the first spring 6 is in a compressed state, the limiting plates 8 drive the sealing plate 9, the sealing plate 9 is separated from the second pipeline 11, the first pipeline 1 is communicated with the second pipeline 11, after the smoke discharge is finished, the motor 13 is reversely started, the motor 13 drives the rotating shaft 14, the rotating shaft 14 drives the second bevel gear 14, the second bevel gear 14 drives, the threaded rod 4 drives the threaded sleeves 7 through meshing transmission, the two threaded sleeves 7 are mutually far away from each other to drive the two limiting plates 8 to be mutually far away from each other, at the moment, the first spring 6 is restored to a normal state, the limiting plates 8 drive the sealing plates 9, the sealing plates 9 enter the second pipeline 11 to plug the second pipeline 11, and the sealing effect is enhanced through the sealing rings 10, so that the purposes of automatic closing and opening are achieved, and a good sealing and odor tainting prevention effect can be achieved;
when the sealing plate 9 is separated from the second pipeline 11, the sealing plate 9 drives the fixing shaft 15, the fixing shaft drives the second bump 19, the second bump 19 drives the sleeve 18, the sleeve 18 drives the connecting rod 17, the connecting rod 17 slides in the sleeve 18, the second spring 20 is in a compressed state, the connecting rod 17 rotates around the first bump 16, when the sealing plate 9 blocks the second pipeline 11, the sealing plate 9 drives the fixing shaft 15, the fixing shaft drives the second bump 19, the second bump 19 drives the sleeve 18, the sleeve 18 drives the connecting rod 17, the connecting rod 17 slides in the sleeve 18, and the second spring 20 is in an extended state, so that the blocking effect of the sealing plate 9 on the second pipeline 11 is improved, and the backflow prevention effect of the device is improved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a lampblack absorber pipeline anti-return device, includes first pipeline (1), its characterized in that, the fixed second pipeline (11) that has cup jointed in both ends of first pipeline (1), the both ends of first pipeline (1) inside are fixed with mounting bracket (2), rotate on mounting bracket (2) and be connected with threaded rod (4), first bevel gear (3) have been cup jointed fixedly on threaded rod (4), the both ends of mounting bracket (2) side are fixed with guiding axle (5), limiting plate (8) have been cup jointed in the activity on guiding axle (5), the side of limiting plate (8) is installed and is sealed board (9), sealed board (9) insert in second pipeline (11), threaded sleeve (7) are installed to one side of limiting plate (8) keeping away from sealing board (9), threaded sleeve (7) pass through threaded connection with threaded rod (4), install first spring (6) between limiting plate (8) and mounting bracket (2), motor (12) are installed at the top of first pipeline (1), the output shaft of motor (12) inserts the inside of first pipeline (1) and is connected with pivot (13), the fixed cover in bottom of pivot (13) has connect second bevel gear (14), second bevel gear (14) and first bevel gear (3) meshing transmission.
2. The range hood pipeline backflow prevention device according to claim 1, wherein a fixing shaft (15) is fixed to the side face of the sealing plate (9), a second protruding block (19) is installed at one end, far away from the sealing plate (9), of the fixing shaft (15), a sleeve (18) is connected to the second protruding block (19) in a rotating mode, a first protruding block (16) is arranged on the inner wall of the second pipeline (11), a connecting rod (17) is connected to the first protruding block (16) in a rotating mode, and the connecting rod (17) is inserted into the sleeve (18) and movably connected with the sleeve (18).
3. A lampblack absorber pipe backflow prevention device as claimed in claim 2, characterised in that a second spring (20) is arranged between the top of the connecting rod (17) and the top inside the sleeve (18).
4. A lampblack absorber pipeline backflow preventer as claimed in claim 1, characterized in that the first pipeline (1) and the second pipeline (11) are both hollow cylindrical structures, the first pipeline (1) and the second pipeline (11) being coaxial.
5. A lampblack absorber pipeline backflow preventing device according to claim 1, characterized in that the limiting plate (8) is a cylinder structure, the diameter of the limiting plate (8) is equal to the inner diameter of the first pipeline (1).
6. A lampblack absorber pipeline backflow preventer according to claim 1, characterized in that the sealing plate (9) is a cylindrical structure, the diameter of the sealing plate (9) is equal to the inner diameter of the second pipeline (11), and a sealing ring (10) is arranged between the sealing plate (9) and the second pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921941141.8U CN210920269U (en) | 2019-11-12 | 2019-11-12 | Anti-backflow device for pipeline of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921941141.8U CN210920269U (en) | 2019-11-12 | 2019-11-12 | Anti-backflow device for pipeline of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210920269U true CN210920269U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921941141.8U Active CN210920269U (en) | 2019-11-12 | 2019-11-12 | Anti-backflow device for pipeline of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210920269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119641738A (en) * | 2025-02-13 | 2025-03-18 | 长沙杰控机电科技有限公司 | A multifunctional hydraulic valve assembly |
-
2019
- 2019-11-12 CN CN201921941141.8U patent/CN210920269U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119641738A (en) * | 2025-02-13 | 2025-03-18 | 长沙杰控机电科技有限公司 | A multifunctional hydraulic valve assembly |
| CN119641738B (en) * | 2025-02-13 | 2025-05-09 | 长沙杰控机电科技有限公司 | A multifunctional hydraulic valve assembly |
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