Impeller cleaning device and charge circulating fan

Abstract

The application relates to an impeller cleaning device and a material-adding circulating fan. The impeller cleaning device for cleaning the impeller of the material-adding circulating fan comprises a water-gas pipeline, a spraying component and a mounting assembly. The water-gas pipeline is provided with a first transmission channel, and the water-gas pipeline is also provided with a first input port and a first output port, the first input port and the first output port are both communicated with the first transmission channel, and the first input port is used for inputting compressed gas and cleaning liquid. The spraying component is provided with a second transmission channel, and the spraying component is also provided with a second input port and a second output port, the second input port and the second output port are both communicated with the second transmission channel, the second input port is connected with the first output port, and the second output port is used for outputting a water-gas mixture to the impeller. The mounting assembly is connected with the spraying component, and the mounting assembly is used for connecting the shell of the material-adding circulating fan. The impeller cleaning device and the material-adding circulating fan have the advantages of high automation degree, high production efficiency and labor cost saving.

Description

Technical Field

[0001] This application relates to the field of cigarette production equipment technology, and in particular to an impeller cleaning device and a feeding circulation fan. Background Technology

[0002] Currently, feeding and circulating fans are used to transport tobacco leaves during the tobacco production process. However, during operation, some tobacco leaves enter the feeding and circulating fan, causing a large amount of tobacco flakes to adhere to the impeller, thus affecting the fan's circulation efficiency.

[0003] Therefore, maintenance personnel need to clean and maintain the impeller of the feeding circulation fan regularly. Each cleaning and maintenance requires stopping the machine and disassembling the feeding circulation fan, which consumes a lot of time and requires a high level of skill from the maintenance personnel, seriously affecting production efficiency and the normal work of maintenance personnel. Utility Model Content

[0004] Therefore, it is necessary to provide an impeller cleaning device and a feeding circulation fan to address the problems of low production efficiency and high labor costs associated with feeding circulation fans.

[0005] This utility model provides an impeller cleaning device for cleaning the impeller of a feeding circulating fan. The impeller cleaning device includes:

[0006] A water-gas pipeline is provided with a first transmission channel, a first inlet and a first outlet, both of which are connected to the first transmission channel. The first inlet is used to input compressed gas and cleaning fluid.

[0007] The jetting component is provided with a second transmission channel, and the jetting component is also provided with a second input port and a second output port. The second input port and the second output port are both connected to the second transmission channel. The second input port is connected to the first output port. The second output port is used to output a water-air mixture to the impeller to be cleaned.

[0008] The mounting assembly is connected to the injection element and is used to connect to the housing of the feeding circulation blower.

[0009] In one embodiment, the water-gas pipeline is provided with multiple water-gas branches, each of which is provided with a first transmission sub-channel and a first output port. The first transmission sub-channel is connected to the first transmission channel, and the first output port is connected to the first transmission sub-channel. The spray element is also provided with multiple second input ports, and the first output port is connected to the second input port in a one-to-one correspondence.

[0010] In one embodiment, the impeller cleaning device further includes a first connector and a second connector, the first connector being installed at the first output port and the second connector being installed at the second input port, the first connector and the second connector being connected by a first threaded pair.

[0011] In one embodiment, the mounting assembly includes a first connector and a second connector, the first connector being mounted on the housing of the feeding circulation blower, and the second connector being connected to the injection element, the first connector and the second connector being movably connected.

[0012] In one embodiment, the first connector and the second connector are connected by a second threaded pair.

[0013] In one embodiment, the spraying component includes a first connecting plate and a second connecting plate, which are connected by fasteners. The first connecting plate has a first transmission groove on the side facing the second connecting plate, and the second connecting plate has a second transmission groove on the side facing the first connecting plate. The first transmission groove and the second transmission groove are connected to form a second transmission channel. The second input port is disposed on the first connecting plate or the second connecting plate, and the second output port is disposed at the connection between the first connecting plate and the second connecting plate.

[0014] In one embodiment, the impeller cleaning device further includes a control valve installed at the first inlet, the control valve being used to open or close the first inlet.

[0015] In one embodiment, the jetting element is a rectangular plate structure, and the second output port extends along the long side of the jetting element so that the jetting range of the first output port covers the thickness of the impeller.

[0016] This utility model also provides a feeding circulation fan, including a motor, an impeller, a housing, a frame, and an impeller cleaning device according to the above embodiments. The housing has a receiving cavity, the impeller is rotatably disposed in the receiving cavity, the motor is mounted on the frame and connected to one side of the housing, the power end of the motor passes through the housing and is connected to the impeller, and the impeller cleaning device is installed in the receiving cavity and is disposed opposite to the impeller.

[0017] In one embodiment, the feeding circulation fan further includes a drain pipe connected to the bottom of the housing and communicating with the receiving cavity.

[0018] The impeller cleaning device described above is installed inside the feeding circulating fan and connected to the fan casing via an installation assembly. Compressed gas and cleaning fluid are input into the first transmission channel of the water-gas pipeline through the first inlet, and then fed into the second inlet of the spray nozzle through the first outlet. After passing through the second transmission channel, the water-gas mixture is sprayed out from the second outlet, thereby washing off the material on the impeller to be cleaned. The cleaning and maintenance can be completed automatically without disassembling the feeding circulating fan. The entire cleaning process is time-saving, saving maintenance personnel's time and has the advantages of high production efficiency and reduced labor costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the impeller cleaning device described in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the feeding circulation fan described in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram showing the positions of the impeller cleaning device and the impeller as described in the embodiments of this application.

[0022] Icon labels:

[0023] 100. Water / gas pipeline; 110. First inlet; 120. First outlet; 130. Water / gas branch line; 140. First connector;

[0024] 200, Spraying component; 210, Second input port; 220, Second output port; 230, Second connector; 201, First connecting plate; 202, Second connecting plate;

[0025] 300. Mounting component; 310. First connector; 320. Second connector;

[0026] 10. Electric motor; 20. Impeller; 30. Casing; 40. Impeller cleaning device; 50. Sewage pipe; 60. Frame. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] See Figures 1 to 3 The diagram shows a schematic of the structure of an impeller cleaning device 40 and a feeding circulation fan in one embodiment of this application. The impeller cleaning device 40 is used to clean the impeller 20 of the feeding circulation fan. The impeller cleaning device 40 includes a water and air pipeline 100, a jet component 200, and an installation assembly 300.

[0034] The water-gas pipeline 100 is provided with a first transmission channel. The water-gas pipeline 100 is also provided with a first input port 110 and a first output port 120. The first input port 110 and the first output port 120 are both connected to the first transmission channel. The first input port 110 is used to input compressed gas and cleaning fluid.

[0035] The jetting component 200 is provided with a second transmission channel. The jetting component 200 is also provided with a second input port 210 and a second output port 220. The second input port 210 and the second output port 220 are both connected to the second transmission channel. The second input port 210 is connected to the first output port 120. The second output port 220 is used to output a water-air mixture to the impeller 20 to be cleaned.

[0036] The mounting assembly 300 is connected to the spray component 200 and is used to connect the housing 30 of the feeding circulation blower.

[0037] The impeller cleaning device 40 described in this application embodiment is used to be installed in a feeding circulation fan. It is connected to the housing 30 of the feeding circulation fan through the mounting assembly 300. Compressed gas and cleaning liquid are input into the first transmission channel of the water-gas pipeline 100 through the first input port 110, and then conveyed into the second input port 210 of the spray element 200 through the first output port 120. After passing through the second transmission channel, the water-gas mixture is sprayed out from the second output port 220, thereby washing off the material on the impeller 20 to be cleaned.

[0038] The impeller cleaning device 40 described in this application embodiment is installed after the feeding circulation fan. It can automatically complete the cleaning and maintenance without disassembling the feeding circulation fan. The entire cleaning process takes less time, saving maintenance personnel's time. It has the advantages of high automation, high production efficiency and low labor costs.

[0039] In one exemplary embodiment, the pressure of the compressed air in the water-air mixture is greater than 0.4 MPa and the pressure of the cleaning fluid is greater than 0.6 bar, thereby ensuring the cleaning effect of the water-air mixture on the impeller 20.

[0040] In some embodiments, such as Figure 1 As shown, the water-gas pipeline 100 is provided with multiple water-gas branches 130. Each water-gas branch 130 is provided with a first transmission sub-channel and a first output port 120. The first transmission sub-channel is connected to the first transmission channel, and the first output port 120 is connected to the first transmission sub-channel. The spray component 200 is provided with multiple second input ports 210. The first output port 120 and the second input port 210 are connected one-to-one.

[0041] In this embodiment, multiple water-air branch lines 130 are led out from the water-air pipeline 100, and the multiple water-air branch lines 130 are connected one-to-one with the multiple second input ports 210 of the spraying element 200. This enables uniform distribution and precise delivery of the water-air mixture, ensuring a stable and consistent supply of water-air mixture at each spraying position of the second output port 220. This adapts to the wide coverage spraying requirements of the spraying element 200, thereby improving the cleaning effect of materials such as tobacco leaves and significantly improving the cleaning efficiency of the impeller cleaning device 40.

[0042] In one exemplary embodiment, such as Figure 1 As shown, the water-air branch 130 includes three ports, and the second input port 210 also includes three ports, so that the first output port 120 of the water-air branch 130 is connected to the second input port 210 in a one-to-one correspondence. The second input ports 210 are spaced apart along the length of the jet 200 to ensure that the water-air mixture input through the second input port 210 is evenly distributed in the second transmission channel.

[0043] In an optional embodiment, such as Figure 1 As shown, the impeller cleaning device 40 also includes a first connector 140 and a second connector 230. The first connector 140 is installed at the first output port 120, and the second connector 230 is installed at the second input port 210. The first connector 140 and the second connector 230 are connected by a first threaded pair.

[0044] In this embodiment, the first threaded connection between the first connector 140 and the second connector 230 ensures the sealing and firmness of the connection between the water-air pipeline 100 and the spray component 200, effectively preventing leakage of the water-air mixture during transportation to ensure stable water-air pressure required for cleaning the impeller 20. It also has the advantage of convenient disassembly and assembly, facilitating the later maintenance, repair or component replacement of the impeller cleaning device 40, and improving the assembly flexibility and applicability of the impeller cleaning device 40.

[0045] In an optional embodiment, such as Figure 1 and Figure 2As shown, the mounting assembly 300 includes a first connector 310 and a second connector 320. The first connector 310 is used to install on the housing 30 of the feeding circulation blower, and the second connector 320 is connected to the spray member 200. The first connector 310 and the second connector 320 are movably connected. The first connector 310 is used to adjust the connection position with the second connector 320 to adjust the distance between the spray member 200 and the impeller 20.

[0046] This embodiment, through the movable connection and adjustable connection position of the first connector 310 and the second connector 320, can flexibly adapt to the installation requirements of the impeller cleaning device 40, precisely adjust the distance between the spray element 200 and the impeller 20 to match the optimal cleaning conditions, ensure that the water-air mixture output by the spray element 200 accurately acts on the part of the impeller 20 to be cleaned, improve the cleaning effect and efficiency, and avoid the problem of damage to the impeller 20 or incomplete cleaning caused by improper spacing. It has the advantages of convenient disassembly and adjustment and strong adaptability, further ensuring the stable operation of the feeding circulation fan and reducing maintenance costs and downtime.

[0047] In an optional embodiment, such as Figure 1 and Figure 2 As shown, the first connector 310 and the second connector 320 are connected by a second threaded pair. In this embodiment, the connection between the first connector 310 and the second connector 320 is achieved through the second threaded pair. This not only allows for precise fine-tuning of the distance between the jet component 200 and the impeller 20 by utilizing the helical transmission characteristics of the thread, ensuring that the water-air mixture accurately acts on key parts of the impeller 20 to improve cleaning efficiency, but also guarantees the strength and sealing of the connection. Furthermore, the threaded connection offers advantages such as convenient assembly and disassembly, simple adjustment, and quick adjustment according to cleaning needs, resulting in strong adaptability and low maintenance costs.

[0048] In one exemplary embodiment, the first connector 310 consists of two connecting nuts and a washer, and the second connector 320 is a threaded rod. One end of the threaded rod is connected to the spraying component 200, and the other end of the threaded rod passes through the housing 30. Washers and connecting nuts are respectively provided on both sides of the housing 30 to fix the position of the threaded rod. When the position of the threaded rod needs to be adjusted, the connecting nuts are loosened, adjusted, and then tightened again. Specifically, the connection between the threaded rod and the spraying component 200 can be welding or threaded fastening.

[0049] In other embodiments, the mounting assembly 300 can also be a telescopic rod, with one end connected to the housing 30 and the other end connected to the spray element 200, so that the mounting assembly 300 can meet the requirements of connecting the spray element 200 and the housing 30 and adjusting the distance between the spray element 200 and the impeller 20.

[0050] In an optional embodiment, such as Figure 1As shown, the spraying component 200 includes a first connecting plate 201 and a second connecting plate 202. The first connecting plate 201 and the second connecting plate 202 are connected by fasteners. The first connecting plate 201 has a first transmission groove on the side facing the second connecting plate 202, and the second connecting plate 202 has a second transmission groove on the side facing the first connecting plate 201. The first transmission groove and the second transmission groove are connected to form a second transmission channel. A second input port 210 is disposed on the first connecting plate or the second connecting plate, and a second output port 220 is disposed at the connection between the first connecting plate 201 and the second connecting plate 202.

[0051] The spray component 200 in this embodiment includes a first connecting plate 201 and a second connecting plate 202. The first connecting plate 201 and the second connecting plate 202 are connected by fasteners. The disassembly structure of the first connecting plate 201 and the second connecting plate 202 reduces the overall processing difficulty. The first connecting plate 201 and the second connecting plate 202 can be precisely processed separately and then assembled, effectively controlling the processing accuracy and cost. The fasteners can also be used to achieve quick disassembly and assembly. Furthermore, the second transmission channel can be cleaned and maintained by disassembly, further ensuring the stable and efficient operation of the impeller cleaning device 40.

[0052] In an optional embodiment, the impeller cleaning device 40 further includes a control valve installed at the first inlet 110. The control valve is used to open or close the first inlet 110 to control the input of compressed gas and cleaning fluid into the first transmission channel.

[0053] In this embodiment, a control valve is installed at the first input port 110 to control the input of compressed gas and cleaning fluid into the first transmission channel. This not only allows for flexible adjustment of the input timing, flow rate, and pressure of the two media, but also enables switching between single-media and mixed-media cleaning modes according to the degree of contamination of the impeller 20 or cleaning requirements, improving the targeting and effectiveness of cleaning. Furthermore, it allows for the rapid cutoff of the supply of compressed gas and cleaning fluid, preventing leakage and waste or unnecessary impact on the equipment. At the same time, the control valve makes the input control of compressed gas and cleaning fluid more precise and convenient, ensuring a stable and controllable cleaning process and ensuring the continuous and efficient operation of the impeller cleaning device 40.

[0054] In one exemplary embodiment, the control valve is a pneumatic ball valve, which has the advantages of fast response and rapid opening and closing. It can accurately and efficiently control the on / off state, flow rate and pressure of compressed gas and cleaning fluid, and flexibly adapt to the different cleaning conditions of impeller 20.

[0055] In an optional embodiment, such as Figure 3 As shown, the spray member 200 is a rectangular plate structure, and the second output port 220 extends along the long side of the spray member 200 so that the spray range of the second output port 220 covers the thickness of the impeller 20.

[0056] In this embodiment, the second output port 220 extends along the long side of the spray element 200, enabling the water-air mixture to form a spray range covering the entire thickness of the impeller 20. This achieves comprehensive and thorough cleaning of the impeller 20's thickness, avoiding residue caused by incomplete local cleaning. Simultaneously, it ensures a more uniform spray of the water-air mixture, further improving cleaning efficiency and effectiveness. The extended second output port 220 has a simple structure, eliminating the need for multiple additional spray ports and simplifying the design and manufacturing complexity of the spray element 200.

[0057] On the other hand, this application also provides a feeding circulation fan, such as Figure 2 and Figure 3 As shown, the device includes a motor 10, an impeller 20, a housing 30, and an impeller cleaning device 40 as described in any of the above embodiments. The housing 30 has a receiving cavity and an air duct, which are connected. The impeller 20 is rotatably disposed in the receiving cavity. The motor 10 is connected to one side of the housing 30, and the power end of the motor 10 passes through the housing 30 and is connected to the impeller 20. The impeller cleaning device 40 is installed in the receiving cavity and is disposed opposite to the impeller 20.

[0058] The feeding circulation fan described in this application embodiment has an impeller cleaning device 40 installed in the accommodating cavity. The impeller cleaning device 40 is connected to the housing 30 of the feeding circulation fan through the mounting assembly 300. Compressed gas and cleaning liquid are input into the first transmission channel of the water-gas pipeline 100 through the first input port 110, and then conveyed into the second input port 210 of the spray element 200 through the first output port 120. After passing through the second transmission channel, the water-gas mixture is sprayed out from the second output port 220, thereby washing off the material on the impeller 20 to be cleaned.

[0059] The feeding circulation fan described in this application embodiment can be automatically cleaned and maintained without disassembling the feeding circulation fan after the impeller cleaning device 40 is installed. The entire cleaning process takes less time, saving maintenance personnel's time. It has the advantages of high automation, high production efficiency and low labor costs.

[0060] In an optional embodiment, such as Figure 2 and Figure 3 As shown, the feeding circulation fan also includes a frame 60, a housing 30 and a motor 10 mounted on the frame 60 to ensure the overall structure of the feeding circulation fan is robust.

[0061] In an optional embodiment, such as Figure 2 and Figure 3 As shown, the feeding circulation fan also includes a sewage pipe 50, which is connected to the bottom of the housing 30 and communicates with the receiving cavity.

[0062] In this embodiment, a drain pipe 50 connected to the receiving cavity is provided at the bottom of the housing 30. With the help of gravity, the sewage generated after the impeller 20 is cleaned is discharged in time, which avoids the sewage from accumulating in the receiving cavity and causing damage to the feeding circulation fan, and keeps the inside of the receiving cavity clean.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An impeller cleaning device (40) for cleaning the impeller (20) of a feeding circulating fan, characterized in that, The impeller cleaning device (40) includes: A water-gas pipeline (100) is provided with a first transmission channel. The water-gas pipeline (100) is also provided with a first input port (110) and a first output port (120). The first input port (110) and the first output port (120) are both connected to the first transmission channel. The first input port (110) is used to input compressed gas and cleaning liquid. The spraying element (200) is provided with a second transmission channel, and the spraying element (200) is also provided with a second input port (210) and a second output port (220). The second input port (210) and the second output port (220) are both connected to the second transmission channel. The second input port (210) is connected to the first output port (120). The second output port (220) is used to output a water-air mixture to the impeller (20) to be cleaned. Mounting assembly (300) is connected to the spray element (200) and is used to connect the housing (30) of the feeding circulation blower.

2. The impeller cleaning device (40) according to claim 1, characterized in that: The water-gas pipeline (100) is provided with multiple water-gas branches (130), each of the water-gas branches (130) is provided with a first transmission sub-channel and a first output port (120), the first transmission sub-channel is connected to the first transmission channel, and the first output port (120) is connected to the first transmission sub-channel. The spraying component (200) is provided with multiple second input ports (210), and the first output port (120) and the second input port (210) are connected one-to-one.

3. The impeller cleaning device (40) according to claim 1, characterized in that: The impeller cleaning device (40) further includes a first connector (140) and a second connector (230), the first connector (140) being installed at the first output port (120), and the second connector (230) being installed at the second input port (210), the first connector (140) and the second connector (230) being connected by a first threaded pair.

4. The impeller cleaning device (40) according to claim 1, characterized in that: The mounting assembly (300) includes a first connector (310) and a second connector (320), the first connector (310) being mounted on the housing (30) of the feeding circulation blower, and the second connector (320) being connected to the spray member (200), the first connector (310) and the second connector (320) being movably connected.

5. The impeller cleaning device (40) according to claim 4, characterized in that: The first connector (310) and the second connector (320) are connected by a second threaded pair.

6. The impeller cleaning device (40) according to claim 1, characterized in that: The spraying component (200) includes a first connecting plate (201) and a second connecting plate (202). The first connecting plate (201) and the second connecting plate (202) are connected by fasteners. The first connecting plate (201) has a first transmission groove on the side facing the second connecting plate (202), and the second connecting plate (202) has a second transmission groove on the side facing the first connecting plate (201). The first transmission groove and the second transmission groove are connected to form a second transmission channel. The second input port (210) is disposed on the first connecting plate or the second connecting plate, and the second output port (220) is disposed at the connection between the first connecting plate (201) and the second connecting plate (202).

7. The impeller cleaning device (40) according to claim 1, characterized in that: The impeller cleaning device (40) also includes a control valve installed at the first inlet (110) for opening or closing the first inlet (110).

8. The impeller cleaning device (40) according to any one of claims 1-7, characterized in that: The spraying element (200) is a rectangular plate structure, and the second output port (220) extends along the long side of the spraying element (200) so that the spraying range of the first output port (120) covers the thickness of the impeller (20).

9. A feeding circulation fan, characterized in that: The device includes a motor (10), an impeller (20), a housing (30), a frame (60), and an impeller cleaning device (40) as described in any one of claims 1-8. The housing (30) has a receiving cavity, the impeller (20) is rotatably disposed in the receiving cavity, the motor (10) is mounted on the frame (60), and the motor (10) is connected to one side of the housing (30). The power end of the motor (10) passes through the housing (30) and is connected to the impeller (20). The impeller cleaning device (40) is installed in the receiving cavity and is disposed opposite to the impeller (20).

10. The feeding circulation fan according to claim 9, characterized in that: The feeding circulation fan also includes a sewage pipe (50), which is connected to the bottom of the housing (30) and communicates with the receiving cavity.

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