CN118728770B - A self-cleaning double-suction centrifugal fan - Google Patents
A self-cleaning double-suction centrifugal fan Download PDFInfo
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- CN118728770B CN118728770B CN202411197053.7A CN202411197053A CN118728770B CN 118728770 B CN118728770 B CN 118728770B CN 202411197053 A CN202411197053 A CN 202411197053A CN 118728770 B CN118728770 B CN 118728770B
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- sealing plate
- cleaning
- filter screen
- fan
- cylinder
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- 238000004140 cleaning Methods 0.000 title claims abstract description 121
- 238000007789 sealing Methods 0.000 claims abstract description 176
- 239000000428 dust Substances 0.000 claims description 40
- 238000009434 installation Methods 0.000 claims description 28
- 238000007790 scraping Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000009423 ventilation Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 description 20
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000009288 screen filtration Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/69—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side without movement with respect to the filter elements, e.g. fixed nozzles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/162—Double suction pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/424—Double entry casings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本发明公开了一种自清洁双吸离心风机，涉及离心风机技术领域。本发明包括风机蜗壳、清理组件以及辅助组件，当需要对过滤网进行清理时，升降密封板移动使风机蜗壳的一侧进风口封闭，第一转动齿环转动带动清理刮板转动，清理刮板对靠近第一转动齿环的过滤网进行清理，此时靠近第二转动齿环的进风口仍处于打开状态，清理完成后，升降密封板移动，使进风口呈打开状态，上密封板与下密封板移动，使风机蜗壳另一侧进风口完成封闭，第二转动齿环周期性转动带动清理刮板转动，清理刮板对靠近第二转动齿环的过滤网进行清理，使离心电机在不停机的情况下进行清理，避免在恶劣环境下反复启停清理风机，提高风机使用寿命，提升工作效率。
The invention discloses a self-cleaning double-suction centrifugal fan, and relates to the technical field of centrifugal fans. The invention comprises a fan volute, a cleaning assembly and an auxiliary assembly. When the filter screen needs to be cleaned, the lifting sealing plate moves to close the air inlet on one side of the fan volute, the first rotating gear ring rotates to drive the cleaning scraper to rotate, and the cleaning scraper cleans the filter screen close to the first rotating gear ring, and the air inlet close to the second rotating gear ring is still in an open state. After the cleaning is completed, the lifting sealing plate moves to open the air inlet, and the upper sealing plate and the lower sealing plate move to close the air inlet on the other side of the fan volute. The second rotating gear ring periodically rotates to drive the cleaning scraper to rotate, and the cleaning scraper cleans the filter screen close to the second rotating gear ring, so that the centrifugal motor can be cleaned without stopping, avoiding repeated start and stop of the fan for cleaning in a harsh environment, and improving the service life of the fan and work efficiency.
Description
Technical Field
The invention belongs to the technical field of centrifugal fans, and particularly relates to a self-cleaning double-suction centrifugal fan.
Background
The centrifugal fan is a machine which is used for improving the pressure of gas and discharging the gas by means of input mechanical energy, and the centrifugal fan utilizes an impeller which rotates at a high speed to accelerate the gas according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction to convert the kinetic energy into potential energy;
The existing centrifugal fan is generally provided with a filter screen at an air inlet to prevent impurities in the air from entering the fan, but when the filter screen is cleaned, the filter screen needs to be shut down for manual cleaning, for example, a Chinese patent application CN116591970A lacks a cleaning device for the filter screen, when more impurities are attached to the air inlet, the filter screen needs to be shut down for cleaning, so that the working efficiency of the fan is prevented from being influenced by excessive impurities, when the centrifugal fan discharges the air with excessive dust impurities, the impurities are easy to attach to the air inlet, frequent shut down is needed for cleaning, the repeated start and stop of the cleaning fan can reduce the service life of the fan, and the working efficiency is reduced; when scraping the clearance to the filter screen, in part impurity can remove the filter screen filtration pore, if not clear up, can block up the filtration pore in the course of time, influence the air inlet, reduce fan work efficiency.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a self-cleaning double-suction centrifugal fan, which has the advantages that a centrifugal motor is cleaned under the condition of no shutdown, the repeated start and stop of the cleaning fan under severe environment are avoided, the service life of the fan is prolonged, the work efficiency is improved, air passes through a filter screen and blows out dust impurities in the filter holes of the filter screen, the filter holes are prevented from being blocked by the dust impurities, the work efficiency of the centrifugal fan is reduced, and the like, so that the problems that when the centrifugal fan discharges excessive dust impurities, the impurities are easy to adhere to an air inlet, frequent shutdown is needed for cleaning, the service life of the fan is reduced, and the work efficiency is reduced due to repeated start and stop of the cleaning fan are solved; when scraping the clearance to the filter screen, in part impurity can remove the filter screen filtration pore, if not clear up, can block up the filtration pore in the course of time, influence the technical problem who admits air, reduction fan work efficiency.
In order to solve the technical problems, the invention provides the following technical scheme: the invention relates to a self-cleaning double-suction centrifugal fan which comprises a fan volute, a cleaning assembly and an auxiliary assembly, wherein air inlets are formed in two sides of the fan volute, and the cleaning assembly is arranged at the air inlet;
the cleaning assembly comprises a cleaning unit, a lifting sealing plate, an upper sealing plate, a lower sealing plate, a first rotating toothed ring and a second rotating toothed ring;
the cleaning unit is arranged on two sides of the fan volute, the cleaning unit comprises a filter screen and a cleaning scraping plate, the filter screen is arranged at the air inlet, and the cleaning scraping plate is arranged on one side, away from the fan volute, of the filter screen;
The lifting sealing plate is arranged on one side of the filter screen, which is far away from the fan volute, the upper sealing plate and the lower sealing plate are arranged on the other side of the filter screen, which is far away from the fan volute, the lifting sealing plate, the upper sealing plate and the lower sealing plate can vertically move to enable the air inlet of the fan volute to be closed, the first rotating toothed ring is rotatably arranged on one side of the lifting sealing plate, which is close to the filter screen, the second rotating toothed ring is rotatably arranged on one side of the upper sealing plate, which is close to the filter screen, the cleaning scraping plate is fixedly arranged on one side of the first rotating toothed ring and one side of the second rotating toothed ring, which is close to the filter screen, and when the first rotating toothed ring and the second rotating toothed ring rotate, the cleaning scraping plate can rotate and clean the filter screen;
The cleaning unit further comprises a sealing cylinder, a sealing installation block and a dust collecting box, wherein the sealing cylinder is fixedly installed at the air inlet, one end, far away from the fan volute, of the sealing cylinder is fixedly connected with the sealing installation block, an installation round opening is formed in one side, close to the sealing cylinder, of the sealing installation block, a filter screen is arranged in the installation round opening, the filter screen is fixedly connected with the sealing cylinder, the sealing installation block is provided with a sealing installation groove, the lifting sealing plate, the upper sealing plate and the lower sealing plate are all slidably installed in the sealing installation groove, a dust collecting opening is formed in the bottom surface of the sealing installation block, the dust collecting box is fixedly installed at the dust collecting opening, a lower dust collecting opening is formed in the bottom surface of the lower sealing plate, and the dust collecting box is fixedly connected with the lower dust collecting opening;
The cleaning unit further comprises a lifting cylinder, a cleaning motor and a transmission gear, wherein the lifting cylinder is fixedly arranged at two ends of the sealing installation block, the output end of the lifting cylinder, which is close to one side of the lifting sealing plate, is fixedly connected with the lifting sealing plate, the output end of the lifting cylinder, which is close to one side of the upper sealing plate, is respectively fixedly connected with the upper sealing plate and the lower sealing plate, the transmission gear is respectively meshed with the first rotating toothed ring and the second rotating toothed ring, the lifting sealing plate and the upper sealing plate are respectively fixedly arranged on one side, which is far away from the filter screen, of the cleaning motor, and a driving shaft of the cleaning motor respectively penetrates through the lifting sealing plate and the upper sealing plate to be fixedly connected with the transmission gear.
Preferably, a centrifugal impeller is arranged in the fan volute, a rotating shaft is rotatably arranged in the fan volute, the rotating shaft is fixedly connected with the centrifugal impeller, and the rotating shaft penetrates through the filter screen and extends out of the fan volute.
Preferably, the auxiliary assembly comprises a plurality of cleaning auxiliary units and a plurality of air inlet stopping units, the air inlet stopping units are arranged in the fan volute, each air inlet stopping unit comprises a wind shielding cylinder, a connecting block and a stopping cylinder, the stopping cylinders are fixedly connected with the inner wall of the fan volute, the wind shielding cylinders are sleeved on the centrifugal impeller, the connecting blocks are fixedly arranged at the output ends of the stopping cylinders, and the connecting blocks are fixedly connected with the wind shielding cylinders.
Preferably, the cleaning auxiliary unit is arranged at an air outlet of the fan volute, the cleaning auxiliary unit comprises a wind collecting cover, a wind collecting cylinder and a ventilation pipe, the wind collecting cylinder is fixedly arranged on one side, close to the fan volute, of the sealing installation block, a connecting plate is fixedly arranged at the output end of the wind collecting cylinder, the connecting plate is fixedly connected with the wind collecting cover, one end of the ventilation pipe penetrates through the sealing cylinder and is fixedly connected with the sealing cylinder, and the other end of the ventilation pipe penetrates through the wind collecting cover and is fixedly connected with the wind collecting cover.
Preferably, the bottom end of the fan volute is fixedly connected with a base, a driving motor is fixedly installed on the base, and a driving shaft of the driving motor is connected with the rotating shaft through a belt.
Preferably, the bottom surface of the upper sealing plate and the top surface of the lower sealing plate are provided with rotating grooves, and when the bottom surface of the upper sealing plate contacts with the top surface of the lower sealing plate, the rotating shaft is positioned in the rotating grooves.
Preferably, a partition plate is arranged in the middle of the centrifugal impeller.
Preferably, the second rotating toothed ring is provided with a moving opening, and the width of the moving opening is larger than the diameter of the rotating shaft.
Compared with the prior art, the invention provides a self-cleaning double-suction centrifugal fan, which has the following beneficial effects:
1. When the filter screen needs to be cleaned, the lifting sealing plate moves to enable the air inlet on one side of the fan volute to be sealed, the first rotating toothed ring rotates to drive the cleaning scraping plate to rotate, the cleaning scraping plate cleans the filter screen close to the first rotating toothed ring, the air inlet close to the second rotating toothed ring is still in an open state, after the cleaning is completed, the lifting sealing plate moves to remove the sealing of the air inlet, the air inlet is in an open state, the upper sealing plate moves with the lower sealing plate, the air inlet on the other side of the fan volute is sealed, the second rotating toothed ring periodically rotates to drive the cleaning scraping plate to rotate, the cleaning scraping plate cleans the filter screen close to the second rotating toothed ring, the centrifugal motor is cleaned under the condition of not stopping, repeated starting and stopping of the cleaning fan under severe environments is avoided, the service life of the fan is prolonged, and the working efficiency is improved.
2. When the cleaning scraper blade is used for cleaning a filter screen on one side, the air collecting cylinder drives the air collecting cover to move, so that the air collecting cover moves to the air outlet of the fan volute, part of discharged air is discharged into the sealing cylinder through the ventilation pipe, and when the air moves into the sealed mounting groove from the sealing cylinder, the air passes through the filter screen and blows out dust impurities in the filter holes of the filter screen, so that the filter holes are prevented from being blocked by the dust impurities, and the working efficiency of the centrifugal fan is reduced.
3. When one side filter screen is cleaned, the corresponding suspension cylinder drives the wind shielding cylinder to move, so that the wind shielding cylinder moves to the air outlet of the centrifugal impeller and the air outlet is blocked, so that the corresponding air inlet is not subjected to air suction operation, the cleaning effect of the cleaning scraper is ensured, the centrifugal impeller is prevented from rotating to generate load, and the service life of the device is prolonged.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings that are needed for the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the whole structure of the present invention;
FIG. 2 is a second perspective view of the whole structure of the present invention;
FIG. 3 is a schematic view of one of the partial cross-sectional structures of the present invention;
FIG. 4 is a schematic view of a portion of a three-dimensional structure of the present invention;
FIG. 5 is a second perspective view of a portion of the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5A according to the present invention;
FIG. 7 is a second schematic view of a partially cut-away structure of the present invention;
FIG. 8 is a third schematic view in partial cross-section of the present invention;
FIG. 9 is a fourth schematic view of a partially cut-away structure of the present invention;
Fig. 10 is a schematic view of the centrifugal impeller of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A fan volute; 2. cleaning the assembly; 21. a cleaning unit; 211. a filter screen; 212. cleaning a scraping plate; 213. a sealing cylinder; 214. sealing the mounting block; 215. a dust collection box; 216. a lifting cylinder; 217. cleaning a motor; 218. a transmission gear; 201. lifting the sealing plate; 202. an upper sealing plate; 203. a lower sealing plate; 204. a first rotating ring gear; 205. a second rotating ring gear; 3. an auxiliary component; 31. a cleaning auxiliary unit; 311. a wind collecting hood; 312. a wind collecting cylinder; 313. a ventilation pipe; 314. a connecting plate; 32. an air inlet stopping unit; 321. a wind shielding cylinder; 322. a connecting block; 323. suspending the cylinder; 4. a centrifugal impeller; 5. a rotating shaft; 6. a base; 7. and driving the motor.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, based on the embodiments in the invention, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "top," "middle," "inner," and the like indicate an orientation or positional relationship, merely for convenience of description and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Referring to fig. 1-10, the invention discloses a self-cleaning double-suction centrifugal fan, which comprises a fan volute 1, a cleaning assembly 2 and an auxiliary assembly 3, wherein air inlets are formed in two sides of the fan volute 1, and the cleaning assembly 2 is arranged at the air inlets;
The cleaning assembly 2 comprises a cleaning unit 21, a lifting sealing plate 201, an upper sealing plate 202, a lower sealing plate 203, a first rotating toothed ring 204 and a second rotating toothed ring 205;
The cleaning units 21 are arranged on two sides of the fan volute 1, the cleaning units 21 comprise a filter screen 211 and a cleaning scraping plate 212, the filter screen 211 is arranged at the air inlet, and the cleaning scraping plate 212 is arranged on one side, away from the fan volute 1, of the filter screen 211;
The lifting sealing plate 201 is arranged on one side of the filter screen 211 far away from the fan volute 1, the upper sealing plate 202 and the lower sealing plate 203 are arranged on the other side of the filter screen 211 far away from the fan volute 1, the lifting sealing plate 201, the upper sealing plate 202 and the lower sealing plate 203 can vertically move to enable an air inlet of the fan volute 1 to be closed, the first rotating toothed ring 204 is rotatably arranged on one side of the lifting sealing plate 201 close to the filter screen 211, the second rotating toothed ring 205 is rotatably arranged on one side of the upper sealing plate 202 close to the filter screen 211, a cleaning scraping plate 212 is fixedly arranged on one side of the first rotating toothed ring 204 and one side of the second rotating toothed ring 205 close to the filter screen 211, and when the first rotating toothed ring 204 and the second rotating toothed ring 205 rotate, the cleaning scraping plate 212 can rotate and clean the filter screen 211;
When the filter screen 211 needs to be cleaned, the lifting sealing plate 201 vertically moves to seal an air inlet at one side of the fan volute 1, the first rotating toothed ring 204 rotates to drive the cleaning scraping plate 212 to rotate, the cleaning scraping plate 212 cleans the filter screen 211 close to the first rotating toothed ring 204, the air inlet close to the second rotating toothed ring 205 is still in an open state, after cleaning is completed, the lifting sealing plate 201 moves to remove the seal of the air inlet to enable the air inlet to be in an open state, the upper sealing plate 202 and the lower sealing plate 203 vertically move, when the bottom surface of the upper sealing plate 202 contacts with the top surface of the lower sealing plate 203, the air inlet at the other side of the fan volute 1 is completely sealed, the second rotating toothed ring 205 periodically rotates to drive the cleaning scraping plate 212 to rotate, the cleaning scraping plate 212 cleans the filter screen 211 close to the second rotating toothed ring 205, a centrifugal motor is prevented from repeatedly starting and stopping the cleaning fan under a severe environment, the service life of the fan is prolonged, and the working efficiency is improved.
Referring to fig. 3 and 6, the cleaning unit 21 further includes a sealing cylinder 213, a sealing mounting block 214 and a dust collecting box 215, the sealing cylinder 213 is fixedly mounted at the air inlet, one end of the sealing cylinder 213 away from the fan volute 1 is fixedly connected with the sealing mounting block 214, a mounting round opening is formed on one side of the sealing mounting block 214 close to the sealing cylinder 213, a filter screen 211 is arranged in the mounting round opening, the filter screen 211 is fixedly connected with the sealing cylinder 213, the sealing mounting block 214 is provided with a sealing mounting groove, the lifting sealing plate 201, the upper sealing plate 202 and the lower sealing plate 203 are all slidably mounted in the sealing mounting groove, a dust collecting opening is formed on the bottom surface of the sealing mounting block 214, the dust collecting box 215 is fixedly mounted at the dust collecting opening, a lower dust collecting opening is formed on the bottom surface of the lower sealing plate 203, and the dust collecting box 215 is fixedly connected at the lower dust collecting opening;
When the filter screen 211 is cleaned, the lifting sealing plate 201, the upper sealing plate 202 and the lower sealing plate 203 move to enable the sealing installation groove to be in a closed state, the cleaning scraper 212 cleans dust impurities on the filter screen 211, and the dust falls into the dust collection box 215.
Referring to fig. 3 and 7, the cleaning unit 21 further includes a lifting cylinder 216, a cleaning motor 217 and a transmission gear 218, the lifting cylinder 216 is fixedly mounted at two ends of the seal mounting block 214, the output end of the lifting cylinder 216 at one side close to the lifting sealing plate 201 is fixedly connected with the lifting sealing plate 201, the output end of the lifting cylinder 216 at one side close to the upper sealing plate 202 is respectively fixedly connected with the upper sealing plate 202 and the lower sealing plate 203, the transmission gear 218 is arranged at one side of the lifting sealing plate 201 and the upper sealing plate 202 close to the filter screen 211, the transmission gear 218 is respectively meshed with the first rotating toothed ring 204 and the second rotating toothed ring 205, the cleaning motor 217 is fixedly mounted at one side of the lifting sealing plate 201 and the upper sealing plate 202 far from the filter screen 211, and the driving shaft of the cleaning motor 217 is respectively fixedly connected with the transmission gear 218 through the lifting sealing plate 201 and the upper sealing plate 202;
When the filter screen 211 needs to be cleaned, the lifting cylinder 216 drives the lifting sealing plate 201 to move so as to seal the corresponding sealing installation groove, the cleaning motor 217 drives the transmission gear 218 to rotate, the transmission gear 218 drives the first rotating toothed ring 204 to rotate, and the first rotating toothed ring 204 rotates to drive the cleaning scraping plate 212 to rotate so as to clean the filter screen 211; the lifting cylinders 216 respectively drive the upper sealing plate 202 to move downwards, the lower sealing plate 203 to move upwards, the corresponding sealing installation grooves are sealed, the cleaning motor 217 drives the transmission gear 218 to rotate, the transmission gear 218 drives the second rotating toothed ring 205 to periodically rotate, and the second rotating toothed ring 205 rotates to drive the cleaning scraping plate 212 to periodically rotate so as to clean the filter screen 211.
In the second embodiment, as shown in fig. 1 and 10, a centrifugal impeller 4 is disposed in a fan volute 1, a rotation shaft 5 is rotatably mounted in the fan volute 1, the rotation shaft 5 is fixedly connected with the centrifugal impeller 4, and the rotation shaft 5 extends out of the fan volute 1 through a filter screen 211;
when the centrifugal fan works, the rotating shaft 5 rotates to drive the centrifugal impeller 4 to rotate, and gas is pumped into the fan volute 1 from the gas inlet.
In the third embodiment, as shown in fig. 6 and 9, the auxiliary assembly 3 includes a plurality of cleaning auxiliary units 31 and a plurality of air inlet stopping units 32, the air inlet stopping units 32 are disposed in the fan volute 1, the air inlet stopping units 32 include a wind shielding cylinder 321, a connecting block 322 and a stopping cylinder 323, the stopping cylinder 323 is fixedly connected with the inner wall of the fan volute 1, the wind shielding cylinder 321 is sleeved on the centrifugal impeller 4, the connecting block 322 is fixedly mounted at the output end of the stopping cylinder 323, and the connecting block 322 is fixedly connected with the wind shielding cylinder 321;
when one side of the filter screen 211 is cleaned, the corresponding suspension cylinder 323 drives the wind shielding cylinder 321 to move, so that the wind shielding cylinder 321 moves to the exhaust port of the centrifugal impeller 4 and blocks the exhaust port, and the corresponding air inlet is not subjected to air suction.
In the fourth embodiment, as shown in fig. 6, the cleaning auxiliary unit 31 is disposed at the air outlet of the fan volute 1, the cleaning auxiliary unit 31 includes a wind collecting cover 311, a wind collecting cylinder 312 and a ventilation pipe 313, the wind collecting cylinder 312 is fixedly installed at one side of the seal installation block 214 near the fan volute 1, a connecting plate 314 is fixedly installed at the output end of the wind collecting cylinder 312, the connecting plate 314 is fixedly connected with the wind collecting cover 311, one end of the ventilation pipe 313 penetrates through the seal cylinder 213 and is fixedly connected with the seal cylinder 213, and the other end penetrates through the wind collecting cover 311 and is fixedly connected with the wind collecting cover 311;
When the cleaning scraper 212 finishes cleaning the filter screen 211 on one side, the air collecting cylinder 312 drives the air collecting cover 311 to move, so that the air collecting cover 311 moves to the air outlet of the fan volute 1, part of discharged air is discharged into the sealing cylinder 213 through the ventilating pipe 313, and when the air moves into the sealed mounting groove from the sealing cylinder 213, the air passes through the filter screen 211 and blows out dust impurities in the filter holes of the filter screen 211, so that the filter holes are prevented from being blocked by the dust impurities, and the working efficiency of the centrifugal fan is reduced.
In the fifth embodiment, as shown in fig. 1 and 2, the bottom end of the fan volute 1 is fixedly connected with a base 6, a driving motor 7 is fixedly installed on the base 6, and a driving shaft of the driving motor 7 is connected with the rotating shaft 5 through a belt;
when in use, the driving motor 7 rotates and drives the rotating shaft 5 to rotate through the belt.
In the sixth embodiment, as compared with the above embodiment, referring to fig. 4, a rotating groove is formed on the bottom surface of the upper sealing plate 202 and the top surface of the lower sealing plate 203, and when the bottom surface of the upper sealing plate 202 contacts with the top surface of the lower sealing plate 203, the rotating shaft 5 is located in the rotating groove;
when the bottom surface of the upper sealing plate 202 contacts with the top surface of the lower sealing plate 203, the moving grooves of the upper sealing plate and the lower sealing plate form a circular groove, and the rotating shaft 5 rotates in the circular groove.
In the seventh embodiment, as shown in fig. 10, a partition plate is provided in the middle of the centrifugal impeller 4, unlike the above embodiments;
When in use, impellers on two sides of the partition board respectively pump air from air inlets on two sides of the fan volute 1.
In the eighth embodiment, as compared with the above-mentioned embodiment, referring to fig. 7, the second rotating ring gear 205 is provided with a moving opening, and the width of the moving opening is larger than the diameter of the rotating shaft 5;
When the upper sealing plate 202 moves vertically, the second rotating ring gear 205 rotates so that the moving port is positioned at the lowest end of the second rotating ring gear 205, and the second rotating ring gear 205 can pass through the rotating shaft 5.
In summary, by means of the above technical solution of the present invention, when the present device is used, the rotation shaft 5 rotates to drive the centrifugal impeller 4 to rotate, and gas is pumped into the fan volute 1 from the air inlet through the filter screen 211, and is discharged from the air outlet of the fan volute 1, when the filter screen 211 needs to be cleaned, the lifting cylinder 216 drives the lifting sealing plate 201 to move, so that the corresponding sealing installation groove is sealed, the air inlet on one side of the fan volute 1 is sealed, the corresponding stopping cylinder 323 drives the wind shielding cylinder 321 to move to the air outlet of the centrifugal impeller 4, and the air outlet is blocked, so that the corresponding air inlet is not pumped, the cleaning motor 217 drives the transmission gear 218 to rotate, the transmission gear 218 drives the first rotating toothed ring 204 to rotate, the first rotating toothed ring 204 rotates to drive the cleaning scraper 212 to clean the filter screen 211, the dust impurities on the filter screen 211 fall into the dust collecting box 215, at this time, the air inlet close to the second rotating toothed ring 205 is still in an open state, after the cleaning is completed, the lifting cylinder 216 drives the lifting sealing plate 201 to move, the air inlet is released, so that the air inlet is opened, the wind shielding cylinder 321 is blocked, and the corresponding wind shielding cylinder 321 is stopped, and the air outlet is released; the lifting cylinders 216 respectively drive the upper sealing plate 202 to move downwards, the lower sealing plate 203 to move upwards, the corresponding sealing installation groove is closed, the corresponding stopping cylinder 323 drives the wind shielding cylinder 321 to move, the wind shielding cylinder 321 moves to the exhaust port of the centrifugal impeller 4 and blocks the exhaust port, the corresponding air inlet is not subjected to air suction work any more, the cleaning motor 217 drives the transmission gear 218 to rotate, the transmission gear 218 drives the second rotating toothed ring 205 to periodically rotate, the second rotating toothed ring 205 rotates to drive the cleaning scraper 212 to periodically rotate so as to clean the filter screen 211, the cleaning scraper 212 cleans dust impurities on the filter screen 211, the dust falls into the dust collecting box 215, the centrifugal motor is cleaned under the condition of no shutdown, the repeated start and stop of a cleaning fan under the severe environment is avoided, the service life of the fan is prolonged, and the working efficiency is improved; when the cleaning scraper 212 finishes cleaning the filter screen 211 on one side, the air collecting cylinder 312 drives the air collecting cover 311 to move, so that the air collecting cover 311 moves to the air outlet of the fan volute 1, part of discharged air is discharged into the sealing cylinder 213 through the ventilating pipe 313, and when the air moves into the sealed mounting groove from the sealing cylinder 213, the air passes through the filter screen 211 and blows out dust impurities in the filter holes of the filter screen 211, so that the filter holes are prevented from being blocked by the dust impurities, and the working efficiency of the centrifugal fan is reduced.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above disclosed preferred embodiments of the invention are merely intended to help illustrate the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The utility model provides a self-cleaning double suction centrifugal fan, includes fan spiral case, clearance subassembly and auxiliary assembly, its characterized in that: the two sides of the fan volute are provided with air inlets, and the cleaning assembly is arranged at the air inlet;
the cleaning assembly comprises a cleaning unit, a lifting sealing plate, an upper sealing plate, a lower sealing plate, a first rotating toothed ring and a second rotating toothed ring;
the cleaning unit is arranged on two sides of the fan volute, the cleaning unit comprises a filter screen and a cleaning scraping plate, the filter screen is arranged at the air inlet, and the cleaning scraping plate is arranged on one side, away from the fan volute, of the filter screen;
The lifting sealing plate is arranged on one side of the filter screen, which is far away from the fan volute, the upper sealing plate and the lower sealing plate are arranged on the other side of the filter screen, which is far away from the fan volute, the lifting sealing plate, the upper sealing plate and the lower sealing plate can vertically move to enable the air inlet of the fan volute to be closed, the first rotating toothed ring is rotatably arranged on one side of the lifting sealing plate, which is close to the filter screen, the second rotating toothed ring is rotatably arranged on one side of the upper sealing plate, which is close to the filter screen, the cleaning scraping plate is fixedly arranged on one side of the first rotating toothed ring and one side of the second rotating toothed ring, which is close to the filter screen, and when the first rotating toothed ring and the second rotating toothed ring rotate, the cleaning scraping plate can rotate and clean the filter screen;
The cleaning unit further comprises a sealing cylinder, a sealing installation block and a dust collecting box, wherein the sealing cylinder is fixedly installed at the air inlet, one end, far away from the fan volute, of the sealing cylinder is fixedly connected with the sealing installation block, an installation round opening is formed in one side, close to the sealing cylinder, of the sealing installation block, a filter screen is arranged in the installation round opening, the filter screen is fixedly connected with the sealing cylinder, the sealing installation block is provided with a sealing installation groove, the lifting sealing plate, the upper sealing plate and the lower sealing plate are all slidably installed in the sealing installation groove, a dust collecting opening is formed in the bottom surface of the sealing installation block, the dust collecting box is fixedly installed at the dust collecting opening, a lower dust collecting opening is formed in the bottom surface of the lower sealing plate, and the dust collecting box is fixedly connected with the lower dust collecting opening;
The cleaning unit further comprises a lifting cylinder, a cleaning motor and a transmission gear, wherein the lifting cylinder is fixedly arranged at two ends of the sealing installation block, the output end of the lifting cylinder, which is close to one side of the lifting sealing plate, is fixedly connected with the lifting sealing plate, the output end of the lifting cylinder, which is close to one side of the upper sealing plate, is respectively fixedly connected with the upper sealing plate and the lower sealing plate, the transmission gear is respectively meshed with the first rotating toothed ring and the second rotating toothed ring, the lifting sealing plate and the upper sealing plate are respectively fixedly arranged on one side, which is far away from the filter screen, of the cleaning motor, and a driving shaft of the cleaning motor respectively penetrates through the lifting sealing plate and the upper sealing plate to be fixedly connected with the transmission gear.
2. The self-cleaning double-suction centrifugal fan according to claim 1, wherein a centrifugal impeller is arranged in the fan volute, a rotating shaft is rotatably arranged in the fan volute, the rotating shaft is fixedly connected with the centrifugal impeller, and the rotating shaft penetrates through the filter screen and extends out of the fan volute.
3. The self-cleaning double-suction centrifugal fan according to claim 2, wherein the auxiliary assembly comprises a plurality of cleaning auxiliary units and a plurality of air inlet stopping units, the air inlet stopping units are arranged in the fan volute, each air inlet stopping unit comprises a wind shielding cylinder, a connecting block and a stopping cylinder, the stopping cylinders are fixedly connected with the inner wall of the fan volute, the wind shielding cylinders are sleeved on the centrifugal impeller, the connecting blocks are fixedly arranged at the output ends of the stopping cylinders, and the connecting blocks are fixedly connected with the wind shielding cylinders.
4. The self-cleaning double-suction centrifugal fan according to claim 3, wherein the cleaning auxiliary unit is arranged at an air outlet of the fan volute, the cleaning auxiliary unit comprises a wind collecting cover, a wind collecting cylinder and a ventilation pipe, the wind collecting cylinder is fixedly arranged at one side, close to the fan volute, of the sealing installation block, a connecting plate is fixedly arranged at the output end of the wind collecting cylinder, the connecting plate is fixedly connected with the wind collecting cover, one end of the ventilation pipe penetrates through the sealing cylinder and is fixedly connected with the sealing cylinder, and the other end of the ventilation pipe penetrates through the wind collecting cover and is fixedly connected with the wind collecting cover.
5. The self-cleaning double-suction centrifugal fan according to claim 4, wherein a base is fixedly connected to the bottom end of the fan volute, a driving motor is fixedly installed on the base, and a driving shaft of the driving motor is connected with the rotating shaft through a belt.
6. The self-cleaning double suction centrifugal fan as claimed in claim 5, wherein the upper sealing plate bottom surface and the lower sealing plate top surface are provided with rotating grooves, and the rotating shaft is positioned in the rotating grooves when the upper sealing plate bottom surface and the lower sealing plate top surface are in contact.
7. The self-cleaning double suction centrifugal fan as claimed in claim 4, wherein a partition plate is provided in the middle of the centrifugal impeller.
8. The self-cleaning double suction centrifugal fan as claimed in claim 4, wherein the second rotating toothed ring is provided with a moving opening, and the width of the moving opening is larger than the diameter of the rotating shaft.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111379719A (en) * | 2020-04-13 | 2020-07-07 | 广东又一电器科技有限公司 | Air circulation device, air purifier and air humidifier |
| CN117514935A (en) * | 2023-12-06 | 2024-02-06 | 四川忆达科技有限公司 | Centrifugal fan and noise reduction control method thereof |
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| CN217873332U (en) * | 2022-08-17 | 2022-11-22 | 株洲鑫桂新型材料有限公司 | Centrifugal fan with regulation formula clearance function |
| CN118407935A (en) * | 2024-03-27 | 2024-07-30 | 江苏风力士智能科技有限公司 | Turbofan with dustproof cleaning assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379719A (en) * | 2020-04-13 | 2020-07-07 | 广东又一电器科技有限公司 | Air circulation device, air purifier and air humidifier |
| CN117514935A (en) * | 2023-12-06 | 2024-02-06 | 四川忆达科技有限公司 | Centrifugal fan and noise reduction control method thereof |
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