A box type centrifugal fan

Abstract

The utility model provides a kind of box type centrifugal fan, including base, base is fixed with box, and the air inlet pipe is communicated on the box, and detachable connection's connecting pipe is set on the air inlet pipe, and filter cover is set on the connecting pipe, and connecting frame is fixed on the connecting pipe, and motor for driving filter cover rotation is equipped on the connecting frame, and cleaning brush for cleaning filter cover surface is fixed on the connecting frame.The utility model can automatically clean dust adhered to filter cover surface, without disassembling filter cover or manually cleaning filter cover by staff, ensure the normal operation of centrifugal fan, reduce the labor burden of staff.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and in particular to a box-type centrifugal fan. Background Technology

[0002] A box-type centrifugal fan is an integrated device that houses the centrifugal fan (the core power component) within a box-shaped casing (also known as a housing or soundproof enclosure). Its design aims to significantly reduce operating noise while maintaining the high efficiency of the centrifugal fan, providing a compact unit that is easy to install and maintain. After prolonged use, a significant amount of dust accumulates on the dustproof plate at the air inlet, affecting the fan's normal operation and reducing airflow. Therefore, when the dustproof plate is heavily soiled, it requires manual cleaning by staff, a tedious process that increases their workload. Utility Model Content

[0003] This utility model discloses a box-type centrifugal fan, which solves the problem of requiring staff to disassemble the dustproof plate and manually clean the dust on the dustproof plate.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A box-type centrifugal fan includes a base, a box body fixed on the base, an air inlet pipe connected to the box body, a detachable connecting pipe sleeved on the air inlet pipe, a filter cover sleeved on the connecting pipe, a connecting frame fixed on the connecting pipe, a motor for driving the filter cover to rotate on the connecting frame, and a cleaning brush for cleaning the surface of the filter cover fixed on the connecting frame.

[0005] Compared with the prior art, the present invention has the following beneficial effects: When the centrifugal fan inside the housing runs for an extended period, causing a significant amount of dust to adhere to the surface of the filter cover, the motor can be started to drive the filter cover to rotate. During the rotation, the cleaning brush can remove the dust adhering to the surface of the filter cover, causing the dust to fall downwards. This invention can automatically clean the dust adhering to the surface of the filter cover without requiring personnel to disassemble or manually clean the filter cover, ensuring the normal operation of the centrifugal fan and reducing the workload of the staff. Attached Figure Description

[0006] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the filter cover of this utility model; Figure 3 for Figure 2 A magnified structural diagram at point A; Figure 4 This is a top-view cross-sectional structural diagram of the connecting frame of this utility model.

[0007] In the diagram: 1. Base; 2. Housing; 21. Air inlet pipe; 3. Connecting pipe; 31. Filter cover; 32. Connecting frame; 33. Motor; 34. Cleaning brush; 4. Fixed beam; 41. Moving shell; 42. Unblocking pipe; 43. Round shell; 44. Push rod; 5. Electric telescopic rod; 51. Connecting rod; 52. First folding pipe; 6. Vertical pipe; 61. Second folding pipe; 7. Water tank; 71. Water pump; 72. Hose; 73. Return pipe; 8. Reciprocating screw; 81. Cleaning brush; 82. Connecting block; 83. Limiting rod; 84. Transmission belt; 9. Collection frame. Detailed Implementation

[0008] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0009] like Figure 1 and Figure 2 As shown, this utility model provides a box-type centrifugal fan, including a base 1, a box body 2 fixed on the base 1, an air inlet pipe 21 connected to the box body 2, a detachable connecting pipe 3 sleeved on the air inlet pipe 21, a filter cover 31 sleeved on the connecting pipe 3, a connecting frame 32 fixed on the connecting pipe 3, a motor 33 for driving the filter cover 31 to rotate on the connecting frame 32, and a cleaning brush 34 for cleaning the surface of the filter cover 31 fixed on the connecting frame 32. The connecting pipe 3 is fixed to the air inlet pipe 21 by bolts, and the main body of the motor 33 passes through the connecting frame 32 and is fixed to the connecting frame 32. When the centrifugal fan is used for a long time and a lot of dust adheres to the filter cover 31, the motor 33 can be started to drive the filter cover 31 to rotate, and the cleaning brush 34 can clean the dust adhering to the surface of the filter cover 31, so that the dust falls off the surface of the filter cover 31. When the centrifugal fan is started, the motor 33 can also drive the filter cover 31 to rotate, so that the cleaning brush 34 can clean the dust adhering to the filter cover 31 in time, without having to wait until there is a lot of dust adhering to the filter cover 31 before cleaning (the two cleaning methods can be selected according to the actual situation).

[0010] like Figure 1 , Figure 2 and Figure 3As shown, a fixed beam 4 is fixed inside the connecting pipe 3, and a movable shell 41 is slidably connected to the fixed beam 4. The bottom of the movable shell 41 is connected to a dredging pipe 42 that can be inserted into the filter holes on the filter cover 31. An electric telescopic rod 5 is fixedly connected through the connecting pipe 3, and the telescopic end of the electric telescopic rod 5 is fixed to a connecting rod 51 connected to the movable shell 41. When dust clogs the filter holes of the filter cover 31, without rotating the filter cover 31, the telescopic end of the electric telescopic rod 5 drives the movable shell 41 to move downward through the connecting rod 51, so that the dredging pipe 42 is inserted into the filter holes on the filter cover 31, thus clearing the dust clogged in the filter holes. When it is necessary to unclog the filter holes, the external control panel drives the motor 33 to rotate the filter cover 31 to the preset initial state. In the initial state, the filter holes at the bottom of the filter cover 31 correspond to the bottom end of the unclogging pipe 42, so that the unclogging pipe 42 can be smoothly inserted into the filter holes to push out the dust. Subsequently, through the control program set on the external control panel, the motor 33 drives the filter cover 31 to rotate at a specified angle, so that the unclogging pipe 42 can unclog other filter holes. Two operating programs for the motor 33 can be set through the external control panel: one is to drive the filter cover 31 to rotate continuously, and the other is to drive the filter cover 31 to rotate intermittently when it is necessary to unclog the filter holes. The control program for controlling the motor 33 on the external control panel can be implemented by those skilled in the art with simple programming, and will not be described in detail here.

[0011] like Figure 1 , Figure 2 and Figure 3As shown, the bottom of the unblocking pipe 42 is connected to a circular shell 43 that can be inserted into the filter holes on the filter cover 31. The circular shell 43 has a through hole, and a push rod 44 is fixed to the bottom of the circular shell 43. A vertical pipe 6 that passes through the connecting pipe 3 is connected to the movable shell 41. A water tank 7 is embedded in the base 1, and a water pump 71 is installed on the water tank 7. The drain end of the water pump 71 is connected to a flexible hose 72, and the other end of the flexible hose 72 is connected to the vertical pipe 6. The top of the connecting pipe 3 is fixed with a first folded pipe 52 that covers the telescopic end of the electric telescopic rod 5. The connecting rod 51 passes through the bottom of the first folded pipe 52 and is fixed to the first folded pipe 52. The bottom of the connecting pipe 3 is fixed with a second folded pipe 61 that covers the vertical pipe 6. A fixing ring that connects to the bottom of the second folded pipe 61 is fixed on the vertical pipe 6. When the unblocking pipe 42 moves downward, the push rod 44 can be driven by the round shell 43 into the filter hole on the filter cover 31. The inner diameter of the filter hole is slightly larger than the diameter of the round shell 43, so that when the round shell 43 enters the filter hole, it can push out dust and other impurities more smoothly. At the same time, after the push rod 44 is removed from the filter hole, the water pump 71 is started to transport the water in the water tank 7 to the vertical pipe 6 through the hose 72, so that the water enters the moving shell 41, then enters the round shell 43 through the unblocking pipe 42, and is discharged through the perforation. After the water sprays onto the inner wall of the filter cover 31, it flows outward through the filter hole. The motor 33 then drives the filter cover 31 to rotate, so that the cleaning brush 34 can scrub the inner wall of the filter cover 31, further cleaning the surface of the filter cover 31. There are two cleaning brushes 34, which are symmetrically distributed front and back, and are fixed to the front and back of the connecting frame 32 respectively. Figure 1 (as shown in the diagram). The telescopic end of the electric telescopic pole 5 is connected to the connecting rod 51 via a floating joint, which can prevent lateral forces from affecting the normal use of the electric telescopic pole 5. When the connecting rod 51 moves, it can stretch or compress the first folded tube 52, ensuring the sealing effect of the connecting tube 3 and preventing air from entering the part of the connecting tube 3 that is penetrated by the connecting rod 51. When the vertical tube 6 moves up and down, it can also stretch or compress the second folded tube 61, preventing air from entering the part of the connecting tube 3 that is penetrated by the vertical tube 6.

[0012] like Figure 1 and Figure 4As shown, a reciprocating screw 8 is rotatably connected to the connecting frame 32. A cleaning brush 81, which contacts the surface of the filter cover 31, is threaded onto the reciprocating screw 8. The other end of the reciprocating screw 8 is rotatably connected to a connecting block 82 fixed to the connecting pipe 3. A limiting rod 83, which passes through the cleaning brush 81 and is slidably connected to the cleaning brush 81, is fixed on the connecting block 82. A transmission belt 84 is provided on the inner side of the connecting frame 32. Synchronous pulleys are fixed on the rotating shaft of the motor 33 and the reciprocating screw 8, respectively. The two synchronous pulleys are connected by transmission belt 84. A collection frame 9 is provided below the filter cover 31. A return pipe 73 connects the water tank 7 and the collection frame 9. A filter plate located above the return pipe 73 is placed inside the collection frame 9. When the motor 33 starts, the synchronous pulley on the motor 33 shaft can drive the synchronous pulley on the reciprocating screw 8 to rotate through the transmission belt 84, causing the reciprocating screw 8 to rotate, so that the cleaning brush 81 can move laterally back and forth. In conjunction with the rotation of the filter cover 31, the dust on the surface of the filter cover 31 can be further cleaned. The limit rod 83 can assist the movement of the cleaning brush 81. The dust falling downwards falls into the collection frame 9. The filter plate in the collection frame 9 (the filter plate is not shown in the figure. The filter plate can also be replaced with filter cotton or other filter devices according to the actual situation) can block the dust or impurities. The water after cleaning the filter cover 31 also falls into the collection frame 9. After being filtered by the filter plate, the water flows back to the water tank 7 through the return pipe 73 for recycling. When the filter plate has been used for a long time, it can also be removed for cleaning or replacement.

[0013] The electrical components in this invention are electrically connected to an external control panel, and the operating program of the electrical components can be set on the external control panel.

[0014] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A box-type centrifugal fan, comprising a base (1), a box body (2) fixed on the base (1), and an air inlet pipe (21) connected to the box body (2), characterized in that: A detachable connecting pipe (3) is fitted on the air inlet pipe (21), a filter cover (31) is fitted on the connecting pipe (3), a connecting frame (32) is fixed on the connecting pipe (3), a motor (33) for driving the filter cover (31) to rotate is provided on the connecting frame (32), and a cleaning brush (34) for cleaning the surface of the filter cover (31) is fixed on the connecting frame (32).

2. A box-type centrifugal fan according to claim 1, characterized in that: A fixed beam (4) is fixed inside the connecting pipe (3), and a movable shell (41) is slidably connected to the fixed beam (4). The bottom of the movable shell (41) is connected to a dredging pipe (42) that can be inserted into the filter hole on the filter cover (31). An electric telescopic rod (5) is fixedly connected through the connecting pipe (3), and a connecting rod (51) connected to the movable shell (41) is fixed at the telescopic end of the electric telescopic rod (5).

3. A box-type centrifugal fan according to claim 2, characterized in that: The bottom of the unblocking pipe (42) is connected to a round shell (43) that can be inserted into the filter hole on the filter cover (31). The round shell (43) has a perforation and a push rod (44) is fixed at the bottom of the round shell (43). The movable shell (41) is connected to a vertical pipe (6) that passes through the connecting pipe (3). A water tank (7) is embedded in the base (1). A water pump (71) is installed on the water tank (7). The drain end of the water pump (71) is connected to a hose (72). The other end of the hose (72) is connected to the vertical pipe (6).

4. A box-type centrifugal fan according to claim 3, characterized in that: The top of the connecting tube (3) is fixed with a first folded tube (52) that covers the telescopic end of the electric telescopic rod (5), and the connecting rod (51) passes through the bottom of the first folded tube (52) and is fixed to the first folded tube (52); the bottom of the connecting tube (3) is fixed with a second folded tube (61) that covers the vertical tube (6), and a fixing ring that connects to the bottom of the second folded tube (61) is fixed on the vertical tube (6).

5. A box-type centrifugal fan according to claim 1, characterized in that: A reciprocating screw (8) is rotatably connected to the connecting frame (32). A cleaning brush (81) that contacts the surface of the filter cover (31) is threaded onto the reciprocating screw (8). A connecting block (82) that is fixed to the connecting pipe (3) is rotatably connected to the other end of the reciprocating screw (8). A limiting rod (83) that passes through the cleaning brush (81) and is slidably connected to the cleaning brush (81) is fixed on the connecting block (82). A transmission belt (84) is provided on the inner side of the connecting frame (32). A synchronous pulley is fixed on the shaft of the motor (33) and the reciprocating screw (8). The two synchronous pulleys are connected by transmission belt (84).

6. A box-type centrifugal fan according to claim 1, characterized in that: A collection frame (9) is provided below the filter cover (31), and a return pipe (73) is connected between the water tank (7) and the collection frame (9). A filter plate located above the return pipe (73) is placed inside the collection frame (9).

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