High-speed centrifugal fan with internal dust removal function

Abstract

The invention relates to the technical field of centrifugal fans, in particular to a high-speed centrifugal fan with an internal dust removal function. Comprising a fan body; the controller is mounted on the side surface of the fan body; the mounting frame is connected to the side surface of the fan body; a T-shaped sliding groove is formed in the inner wall of a machine shell of the fan body, the conveying belt is connected into the T-shaped sliding groove in a sliding mode, and tooth holes are formed in the outer wall of the conveying belt in the circumferential direction at intervals. Through cooperative cooperation of the conveying belt, the connecting rod, the connecting pipe and the first spray heads, automatic cleaning of the inner wall of the machine shell and the outer wall of the impeller of the fan body can be achieved, specifically, the conveying belt can rotate along the T-shaped sliding groove under driving of the driving assembly, and the first spray heads on the connecting rod and the connecting pipe are driven to rotate around the outer side of the impeller; by means of the design, the problem that a traditional centrifugal fan needs to be disassembled and cleaned frequently can be avoided, and the maintenance time and the labor cost are remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, and in particular to a high-speed centrifugal fan with internal dust removal. Background Art

[0002] Centrifugal fans are widely used in industrial, commercial and civil fields as ventilation equipment. Their main function is to generate pressure difference through the high-speed rotation of the impeller, thereby achieving the transportation of air or other gases. However, in actual use, due to the presence of dust, particulate matter and other impurities in the environment, these pollutants will inevitably accumulate gradually inside the centrifugal fan.

[0003] In the prior art, after a centrifugal fan has been running for a long time, a large amount of dust and particulate matter usually adheres to the surface of its impeller and the inner wall of the casing. The accumulation of these pollutants will not only increase the operating resistance of the fan, but also cause the airflow channel to narrow, thereby significantly reducing the air volume and working efficiency. Therefore, in order to ensure the normal operation and stable performance of the centrifugal fan, regular cleaning and maintenance become essential operations. However, the cleaning method of traditional centrifugal fans usually requires the casing to be disassembled in order to thoroughly clean the internal impeller and the inner wall of the casing. This cleaning method is not only complicated to operate, but also consumes a lot of time and labor costs. In addition, it is easy to have problems such as poor sealing or assembly errors during the reassembly process, which further affects the operating performance and safety of the equipment. In addition, frequent disassembly and assembly will accelerate the wear of parts and increase the maintenance frequency and maintenance costs. Summary of the invention

[0004] In view of this, the present invention provides a high-speed centrifugal fan with internal dust removal, which can overcome the shortcomings of existing centrifugal fans that require regular disassembly and cleaning. This cleaning method is not only complicated to operate, but also frequent disassembly and assembly will accelerate the wear of parts and components, affecting the operating performance and safety of the equipment.

[0005] The technical implementation scheme of the present invention is: a high-speed centrifugal fan with internal dust removal, comprising: a fan body; a controller, installed on the side of the fan body; a mounting frame, connected to the side of the fan body; a conveyor belt, the inner wall of the casing of the fan body is provided with a T-shaped groove, and the conveyor belt is slidably connected in the T-shaped groove, and the outer wall of the conveyor belt is circumferentially spaced with tooth holes; a conveying wheel, symmetrically connected to the inner wall of the mounting frame for rotation, and the conveyor belt bypasses the conveying wheel; a connecting rod, connected to the inner wall of the conveyor belt; a connecting pipe, connected to the end of the connecting rod; a first nozzle, installed on the connecting pipe at intervals and kept connected; a driving assembly, arranged in the mounting frame, used to drive the conveyor belt to rotate; a water supply assembly, arranged on the casing of the fan body, used to transport water to the first nozzle for spraying, so as to flush the inner wall of the casing of the fan body and the outer wall of the impeller; a flushing mechanism, arranged on the casing of the fan body, used to flush the inner wall of the impeller.

[0006] Furthermore, the driving assembly includes: a connecting frame connected to the inner wall of the mounting frame; a brushless motor mounted on the connecting frame; a driving gear mounted on the brushless motor, and the driving gear meshes with the tooth holes on the conveyor belt; a connecting gear rotatably connected to the casing of the fan body, and the connecting gear meshes with the tooth holes on the conveyor belt.

[0007] Furthermore, the water supply assembly includes: two connecting blocks, which are symmetrically connected to the top of the casing of the fan body; a rotating cylinder, which is rotatably connected to the connecting block; a driving motor, which is installed on the side of one of the connecting blocks, and the output shaft of the driving motor is connected to the rotating cylinder; a water supply pipe, which is wound around the rotating cylinder, and one end of the water supply pipe is connected to the rotating cylinder and maintained in communication, and the other end of the water supply pipe is connected to the connecting pipe and maintained in communication; a joint, which is connected to the side of the other connecting block, and the joint is rotatably connected to the rotating cylinder and maintained in communication.

[0008] Furthermore, the flushing mechanism includes: a fixed pipe connected to the casing of the fan body; a second nozzle installed at intervals on the fixed pipe and kept connected; a drainage component arranged at the bottom of the casing of the fan body, for discharging waste water inside the casing of the fan body.

[0009] Furthermore, the drainage component includes: a collection frame, which is connected to the bottom of the casing of the fan body and remains connected; a drainage pipe, which is connected to the side of the collection frame and remains connected; and an electric control valve installed on the drainage pipe.

[0010] Furthermore, it also includes: balls, which are symmetrically rotated and connected in the T-shaped slide groove, and the balls are in contact with the outer wall of the conveyor belt.

[0011] Furthermore, it also includes: a photosensor installed on the inner wall of the casing of the fan body; a scraper connected to the outer wall of the impeller of the fan body at circumferential intervals, and the scraper can contact the side of the photosensor as the impeller of the fan body rotates; a light source installed on the inner wall of the casing of the fan body.

[0012] Furthermore, the invention also includes: an alarm device installed on the top of the casing of the fan body.

[0013] The present invention has the following advantages: 1. The present invention can realize automatic cleaning of the inner wall of the casing of the fan body and the outer wall of the impeller through the coordinated cooperation of the conveyor belt, the connecting rod, the connecting pipe and the first nozzle. Specifically, the conveyor belt can rotate along the T-shaped slide groove under the drive of the driving component, driving the connecting rod and the first nozzle on the connecting pipe to rotate around the outer side of the impeller, thereby evenly spraying the clean water provided by the water supply component to the part that needs to be cleaned. This design can avoid the problem that traditional centrifugal fans need to be frequently disassembled and cleaned, and significantly reduce maintenance time and labor costs.

[0014] 2. The present invention can specifically flush the inner wall of the impeller through the cooperation of the fixed pipe and the second nozzle. The design of the fixed pipe can ensure that the second nozzle accurately covers the inner wall area of ​​the impeller. Combined with the stable water flow provided by the water supply component, it can effectively remove the dust and particulate matter accumulated inside the impeller. In addition, the setting of the drainage component can further ensure the timely discharge of wastewater, avoid secondary pollution, and improve the overall cleaning efficiency.

[0015] 3. The present invention can realize real-time monitoring of dust accumulation inside the fan body through the cooperation of photosensors, light sources and alarms. The photosensors detect changes in light intensity inside the casing. When dust accumulation causes the light intensity to be lower than a preset value, the controller will trigger the alarm to sound an alarm, reminding the staff to clean it in time. This intelligent monitoring mechanism can not only improve the operating reliability of the equipment, but also extend the service life of the fan body and reduce performance degradation caused by pollutant accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a cross-sectional view of the casing of the fan body of the present invention.

[0018] Figure 3 It is a schematic diagram of the installation of the conveyor belt and conveyor wheel of the present invention.

[0019] Figure 4 The figure is a schematic diagram of the installation of the connecting rod, the connecting pipe and the first nozzle of the present invention.

[0020] Figure 5 It is a schematic diagram of the installation of the drive assembly and the water supply assembly of the present invention.

[0021] Figure 6 It is a schematic diagram of the connection between the water supply pipe and the connecting pipe of the present invention.

[0022] Figure 7 It is a schematic diagram of the installation of the fixed pipe, the second nozzle and the drainage assembly of the present invention.

[0023] Figure 8 It is a schematic diagram of the installation of the ball of the present invention.

[0024] Fig. 9 Schematic diagram of the distribution structure of the balls of the present invention.

[0025] Fig.10 The figure is a schematic diagram of the installation of the photosensitive sensor, scraper and alarm of the present invention.

[0026] Fig.11 It is a schematic diagram of the installation of the light source of the present invention.

[0027] The meanings of the reference numerals in the figure are: 1-fan body, 101-casing, 102-impeller, 2-controller, 3-installation frame, 4-T-shaped slide, 5-conveyor belt, 501-tooth hole, 6-conveyor wheel, 7-connecting rod, 8-connecting pipe, 9-first nozzle, 10-connecting frame, 11-brushless motor, 12-driving gear, 13-connecting gear, 14-connecting block, 15-rotating cylinder, 16-driving motor, 17-water supply pipe, 18-connector, 19-fixed pipe, 20-second nozzle, 21-collection frame, 22-drain pipe, 23-electrically controlled valve, 24-ball, 25-photosensitive sensor, 26-scraper, 27-light source, 28-alarm. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment: A high-speed centrifugal fan with internal dust removal, such as Figure 1-Figure 7 As shown, it includes a fan body 1, a controller 2, a mounting frame 3, a conveyor belt 5, a conveyor wheel 6, a connecting rod 7, a connecting pipe 8, a first nozzle 9, a driving assembly, a water supply assembly and a flushing mechanism. The front side of the fan body 1 is an air inlet, the upper left side of the fan body 1 is an air outlet, the controller 2 is installed on the lower right front side of the fan body 1, the upper left side of the fan body 1 is connected to the mounting frame 3, the mounting frame 3 is located on the left side of the air outlet, and the shape of the mounting frame 3 is a "mouth" shape, which will not affect the normal operation of the fan body 1. The inner wall of the casing 101 of the fan body 1 is provided with a T-shaped slide groove 4, the conveyor belt 5 is slidably connected in the T-shaped slide groove 4, and the outer wall of the conveyor belt 5 is circumferentially spaced with tooth holes 501, and the T-shaped slide groove 4 can The conveyor belt 5 can be limited to prevent the conveyor belt 5 from being separated from the T-shaped slide groove 4. The upper and lower sides of the inner wall of the installation frame 3 are rotatably connected with conveyor wheels 6, and the conveyor belt 5 passes around the two conveyor wheels 6, so as to keep the conveyor belt 5 in a straight state, ensuring that the conveyor belt 5 can rotate smoothly. The inner wall of the conveyor belt 5 is connected with a connecting rod 7, and the lower end of the connecting rod 7 is connected with a connecting pipe 8. A plurality of first nozzles 9 are installed on the connecting pipe 8 at intervals and kept connected. The driving component is used to drive the conveyor belt 5 to rotate, and the water supply component is used to transport water to the first nozzle 9 for spraying, so as to wash the inner wall of the casing 101 of the fan body 1 and the outer wall of the impeller 102, and the flushing mechanism is used to flush the inner wall of the impeller 102.

[0030] like Figure 5As shown, the driving assembly includes a connecting frame 10, a brushless motor 11, a driving gear 12 and a connecting gear 13. The connecting frame 10 is connected to the middle of the inner wall of the mounting frame 3, and the brushless motor 11 is installed on the upper part of the connecting frame 10. The driving gear 12 is installed on the brushless motor 11, and the driving gear 12 is engaged with the tooth hole 501 on the conveyor belt 5, so that the brushless motor 11 drives the driving gear 12 to rotate, and can drive the conveyor belt 5 to rotate along the T-shaped slide 4. The connecting gear 13 is rotatably connected to the middle of the left side of the casing 101 of the fan body 1, and the connecting gear 13 is engaged with the tooth hole 501 on the conveyor belt 5. The connecting gear 13 is used to assist the conveyor belt 5 to rotate.

[0031] like Figure 5 and Figure 6 As shown, the water supply assembly includes a connecting block 14, a rotating cylinder 15, a driving motor 16, a water supply pipe 17 and a joint 18. The top of the casing 101 of the fan body 1 is symmetrically connected to the connecting block 14 in the front and rear directions. The rotating cylinder 15 is rotatably connected between the two connecting blocks 14. The rotating cylinder 15 is hollow. The driving motor 16 is installed on the rear side of the rear connecting block 14, and the output shaft of the driving motor 16 is connected to the rear end of the rotating shaft of the rotating cylinder 15. A water supply pipe 17 is wound around the rotating cylinder 15, and one end of the water supply pipe 17 is connected to the rotating cylinder 15 and maintained in communication with the inside of the rotating cylinder 15. The other end of the water supply pipe 17 passes through the middle of the connecting rod 7 and is connected to the middle of the connecting pipe 8. The front side of the connecting block 14 on the front side is connected to the joint 18. The rear end of the joint 18 is rotatably connected to the front end of the rotating shaft of the rotating cylinder 15, and the joint 18 is maintained in communication with the inside of the rotating cylinder 15.

[0032] like Figure 7 As shown, the flushing mechanism includes a fixed pipe 19, a second nozzle 20 and a drainage assembly. The front side of the casing 101 of the fan body 1 is connected to the fixed pipe 19, the shape of the fixed pipe 19 is "L"-shaped, the lower end of the fixed pipe 19 is located on the inner side of the impeller 102, and a plurality of second nozzles 20 are installed at intervals at the lower part of the fixed pipe 19 and remain connected. The drainage assembly is used to discharge the waste water inside the casing 101 of the fan body 1; the drainage assembly includes a collecting frame 21, a drainage pipe 22 and an electric control valve 23. The bottom of the casing 101 of the fan body 1 is connected to the collecting frame 21, and the bottom of the casing 101 of the fan body 1 is provided with a water outlet (not shown in the figure) so that the waste water inside the casing 101 of the fan body 1 can fall down into the collecting frame 21. The right side of the collecting frame 21 is connected to the drainage pipe 22 and remains connected, and the drainage pipe 22 is installed with an electric control valve 23.

[0033] In the initial state, the electric control valve 23 is in a closed state, and the interior of the casing 101 will not be connected to the outside through the water outlet, the collection frame 21 and the drain pipe 22, so that the fan body 1 can work normally. The rotation of the impeller 102 can introduce the outside air from the air inlet of the casing 101, and can exert centrifugal force on the air, and then the gas can be thrown out from the air outlet of the casing 101; first, the front side of the joint 18 and the upper end of the fixed pipe 19 are externally connected to a water pump. When it is necessary to clean the inner wall of the casing 101 and the impeller 102, the water pump can be turned on so that the water pump can transport clean water to the joint 18 and the fixed pipe 19, and the clean water in the fixed pipe 19 will be transported to the second nozzle 20 , so that the second nozzle 20 can spray clean water to wash the inner wall of the impeller 102, and the clean water in the joint 18 can be transported to the first nozzle 9 through the rotating cylinder 15, the water supply pipe 17 and the connecting pipe 8. At the same time, the brushless motor 11 can be controlled by the controller 2 to drive the driving gear 12 to rotate, and the driving gear 12 can drive the conveyor belt 5 to rotate along the T-shaped slide 4. The conveyor belt 5 can drive the first nozzle 9 to rotate around the outer side of the impeller 102 through the connecting rod 7, and the connecting rod 7 will pull out the water supply pipe 17. At the same time, the controller 2 will control the driving motor 16 to drive the rotating cylinder 15 to rotate, so that the rotating cylinder 15 releases the water supply pipe 17, so that the water supply pipe 17 The first nozzle 9 can move along the T-shaped chute 4, and the T-shaped chute 4 can limit the water supply pipe 17 to prevent the water supply pipe 17 from falling into the inside of the casing 101 and contacting the impeller 102. At this time, the first nozzle 9 can spray clean water to wash the outer wall of the impeller 102 and the inner wall of the casing 101, and the waste water inside the casing 101 will fall down into the collection frame 21 through the water outlet, so that there is no need to disassemble the casing 101. After the first nozzle 9 rotates one circle, the controller 2 will control the brushless motor 11 to drive the driving gear 12 to reverse, and the driving gear 12 can drive the conveyor belt 5 to reverse along the T-shaped chute 4, so as to drive the first nozzle 9 to reverse around the outer side of the impeller 102. The controller 2 controls the driving motor 16 to drive the rotating drum 15 to reverse, so that the rotating drum 15 can reel in the water supply pipe 17. During the cleaning process, the impeller 102 is controlled to rotate at a low speed to ensure that the impeller 102 is thoroughly cleaned. After the cleaning is completed, the water pump can be turned off to stop the first nozzle 9 and the second nozzle 20 from spraying water. The brushless motor 11 can be controlled to stop working by the controller 2 to stop the first nozzle 9 from rotating. Then, the controller 2 can be used to control the electric control valve 23 to open, so that the waste water in the collection frame 21 can be discharged through the drain pipe 22. After the waste water is drained, the controller 2 can be used to control the electric control valve 23 to close.

[0034] like Figure 8 and Fig. 9As shown, it also includes balls 24. Multiple balls 24 are rotatably connected to the front and rear sides of the T-shaped slide groove 4, and the balls 24 are arranged along the T-shaped slide groove 4. The balls 24 are in contact with the outer wall of the conveyor belt 5. The balls 24 can reduce the friction between the conveyor belt 5 and the T-shaped slide groove 4, and are used to assist the rotation of the conveyor belt 5.

[0035] like Fig.10 and Fig.11 As shown, it also includes a photosensor 25, a scraper 26, a light source 27 and an alarm 28. The photosensor 25 is installed at the lower rear part of the inner wall of the casing 101 of the fan body 1, and three scrapers 26 are connected to the outer wall of the impeller 102 of the fan body 1 at intervals in the circumferential direction. The scrapers 26 can contact the front side of the photosensor 25 as the impeller 102 of the fan body 1 rotates to scrape off dust and particles in front of the photosensor 25 to ensure the detection accuracy of the photosensor 25. A light source 27 is installed at the lower front part of the inner wall of the casing 101 of the fan body 1, and the light source 27 is located in front of and below the photosensor 25. An alarm 28 is installed on the top of the casing 101 of the fan body 1; when the fan body 1 is working, the photosensor 25 can be controlled by the controller 2 The light source 27 starts to work, the light source 27 can emit light to illuminate the inside of the casing 101, and the photosensor 25 can monitor the light intensity inside the casing 101 in real time. As the use time of the fan body 1 increases, the dust and particles inside the casing 101 will increase, and the dust and particles adhering to the surface of the light source 27 will also increase, thereby reducing the light intensity inside the casing 101. When the photosensor 25 detects that the light intensity inside the casing 101 is lower than the preset value, it means that there are more dust and particles inside the casing 101. At this time, the photosensor 25 will send a signal. After receiving the signal, the controller 2 will control the alarm 28 to sound an alarm, thereby reminding the staff to immediately clean the fan body 1.

[0036] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed centrifugal fan with internal dust removal, comprising: a fan body (1); characterized in that: The invention also comprises: a controller (2) mounted on the side of the fan body (1); a mounting frame (3) connected to the side of the fan body (1); a conveyor belt (5), wherein the inner wall of the casing (101) of the fan body (1) is provided with a T-shaped slide groove (4), and the conveyor belt (5) is slidably connected in the T-shaped slide groove (4), and the outer wall of the conveyor belt (5) is provided with tooth holes (501) at intervals in the circumferential direction; a conveyor wheel (6) symmetrically connected to the inner wall of the mounting frame (3), and the conveyor belt (5) passes around the conveyor wheel (6); a connecting rod (7) connected to the inner wall of the conveyor belt (5); and a connecting pipe (8) connected to the inner wall of the conveyor belt (5). connected to the end of the connecting rod (7); a first nozzle (9) is installed at intervals on the connecting pipe (8) and maintained in communication; a driving assembly is arranged in the installation frame (3) and is used to drive the conveyor belt (5) to rotate; a water supply assembly is arranged on the casing (101) of the fan body (1) and is used to transport water to the first nozzle (9) for spraying to wash the inner wall of the casing (101) of the fan body (1) and the outer wall of the impeller (102); a flushing mechanism is arranged on the casing (101) of the fan body (1) and is used to flush the inner wall of the impeller (102).

2. A high-speed centrifugal fan with internal dust removal according to claim 1, characterized in that: The driving assembly comprises: a connecting frame (10) connected to the inner wall of the mounting frame (3); a brushless motor (11) mounted on the connecting frame (10); a driving gear (12) mounted on the brushless motor (11), and the driving gear (12) meshes with a tooth hole (501) on a conveyor belt (5); and a connecting gear (13) rotatably connected to a housing (101) of a fan body (1), and the connecting gear (13) meshes with a tooth hole (501) on the conveyor belt (5).

3. A high-speed centrifugal fan with internal dust removal according to claim 2, characterized in that: The water supply assembly comprises: two connecting blocks (14), which are symmetrically connected to the top of the housing (101) of the fan body (1); a rotating cylinder (15), which is rotatably connected to the connecting block (14); a driving motor (16), which is installed on the side of one of the connecting blocks (14), and the output shaft of the driving motor (16) is connected to the rotating cylinder (15); a water supply pipe (17), which is wound around the rotating cylinder (15), and one end of the water supply pipe (17) is connected to the rotating cylinder (15) and maintained in communication, and the other end of the water supply pipe (17) is connected to the connecting pipe (8) and maintained in communication; a joint (18), which is connected to the side of the other connecting block (14), and the joint (18) is rotatably connected to the rotating cylinder (15) and maintained in communication.

4. A high-speed centrifugal fan with internal dust removal according to claim 3, characterized in that: The flushing mechanism comprises: a fixed pipe (19) connected to the casing (101) of the fan body (1); a second nozzle (20) installed on the fixed pipe (19) at intervals and maintained in communication; and a drainage component arranged at the bottom of the casing (101) of the fan body (1) and used to discharge waste water inside the casing (101) of the fan body (1).

5. A high-speed centrifugal fan with internal dust removal according to claim 4, characterized in that: The drainage assembly comprises: a collection frame (21) connected to the bottom of the casing (101) of the fan body (1) and maintained in communication; a drainage pipe (22) connected to the side of the collection frame (21) and maintained in communication; and an electric control valve (23) installed on the drainage pipe (22).

6. A high-speed centrifugal fan with internal dust removal according to claim 5, characterized in that: It also includes: a ball (24), which is symmetrically rotatably connected in the T-shaped slide groove (4), and the ball (24) is in contact with the outer wall of the conveyor belt (5).

7. A high-speed centrifugal fan with internal dust removal according to claim 6, characterized in that: The invention also includes: a photosensitive sensor (25) mounted on the inner wall of the casing (101) of the fan body (1); a scraper (26) connected to the outer wall of the impeller (102) of the fan body (1) at circumferential intervals, and the scraper (26) can contact the side of the photosensitive sensor (25) as the impeller (102) of the fan body (1) rotates; and a light source (27) mounted on the inner wall of the casing (101) of the fan body (1).

8. A high-speed centrifugal fan with internal dust removal according to claim 7, characterized in that: It also includes: an alarm (28) installed on the top of the casing (101) of the fan body (1).

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