Centrifugal fan convenient to overhaul

Abstract

The utility model discloses a centrifugal fan convenient to overhaul, and belongs to the technical field of centrifugal fans. Comprising a support frame; the impeller box is fixedly connected to the supporting frame, and an air inlet pipe and an air outlet are formed in the surface of the impeller box; the maintenance mechanism comprises an arc-shaped plate mounted on the impeller box, and the arc-shaped plate is convenient for a user to open the impeller box; the base mechanism comprises a bottom plate installed on the supporting frame, and the bottom plate is used for supporting the centrifugal fan; the replacing mechanism comprises four clamping grooves formed in the air inlet pipe, clamping boxes are arranged on the inner walls of the clamping grooves in a penetrating and sliding mode, rectangular grooves are formed in the two sides of each clamping box, and the faces, close to each other, of the four clamping boxes are fixedly connected with a filtering plate; and the surface of the clamping box is rotationally connected with a screw rod, and the interior of the clamping box is slidably connected with a sliding block. According to the centrifugal fan convenient to overhaul, the problem that the disassembly and assembly efficiency of the filter plate on the centrifugal fan is low is solved.

Description

Technical Field

[0001] The present application relates to the technical field of centrifugal fans, and in particular to a centrifugal fan that is easy to maintain. Background Art

[0002] With the continuous advancement of science and technology, the design and manufacturing technology of centrifugal fans has also been greatly developed. At present, centrifugal fans have been widely used in various industries such as electricity, steel, chemical industry, food, etc., and have become one of the indispensable equipment in industrial production and commercial places. The main working principle of centrifugal fans is to generate centrifugal force through the rotation of the impeller, suck in air or other gases, compress them and then discharge them. Compared with traditional axial flow fans, centrifugal fans have higher wind pressure and efficiency, and are suitable for occasions that require large air volume and high wind pressure.

[0003] For example, the patent with publication number CN212803640U specifically discloses a centrifugal fan that is easy to maintain, including a support frame, a motor, a coupling, a cleaning cover, a lifting lug, an air outlet, an air inlet, a shock-absorbing base, a rotating shaft, an arc-shaped plate, fixing screws, a rubber pad and an impeller box. The impeller box can be cleaned by opening the cleaning cover. When the impeller inside the impeller box fails, it can also be repaired in time through the cleaning cover, making the maintenance of the centrifugal fan more convenient.

[0004] However, the existing centrifugal fan draws outside air into the impeller box through the air inlet pipe. Although the centrifugal fan is provided with a filter plate to filter impurities in the air, the filter plate is usually installed on the air inlet pipe by bolts. This causes the filter plate to work for a long time and cause impurities to adhere to it. The user needs to use tools such as wrenches to remove the filter plate, which is time-consuming and labor-intensive, reduces the efficiency of disassembly and assembly of the filter plate, and thus affects the practicality of the centrifugal fan.

[0005] Therefore, it is necessary to provide a centrifugal fan that is easy to maintain to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Utility Model Content

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a centrifugal fan that is easy to maintain, and to solve the problem of low disassembly and assembly efficiency of the filter plate on the centrifugal fan.

[0008] The technical solution adopted by the present application to solve its technical problem is: a centrifugal fan that is easy to repair, including a support frame;

[0009] An impeller box, which is fixedly connected to the support frame, and an air inlet pipe and an air outlet are installed on the surface of the impeller box;

[0010] An inspection mechanism, the inspection mechanism comprising an arc-shaped plate mounted on the impeller box, the arc-shaped plate being convenient for a user to open the impeller box;

[0011] A base mechanism, the base mechanism comprising a bottom plate mounted on a support frame, the bottom plate being used to support the centrifugal fan;

[0012] The replacement mechanism comprises four card slots provided on the air inlet pipe, the inner wall of the card slot is penetrated by a card box for sliding, rectangular slots are provided on both sides of the card box, and filter plates are fixedly connected to the sides of the four card boxes close to each other;

[0013] The surface of the card box is rotatably connected to a screw rod, the interior of the card box is slidably connected to a slider, and the slider is threadedly connected to the screw rod;

[0014] Two telescopic rods are fixedly connected to both sides of the slider, and a stopper is fixedly connected to the sides of the two telescopic rods close to each other, and a spring is fixedly connected to the sides of the stopper and the slider close to each other;

[0015] Among them: the card slot is suitable for the size of the card box, and the card box is inserted into the card slot. At this time, the screw is rotated to drive the slider to move toward the rectangular groove. At this time, the spring elastic force drives the telescopic rod to reset, and then drives the block to extend out of the card box to complete the fixation of the filter plate.

[0016] Furthermore, the maintenance mechanism includes a rotating shaft rotatably connected to the impeller box, the arc surface of the rotating shaft is fixedly connected to an arc plate, the inner wall of the arc plate is fixedly connected to a rubber pad, the surface of the arc plate is slidably connected to bolts, and the bolts are threadedly connected to the impeller box.

[0017] Furthermore, the base mechanism includes a mounting plate fixedly connected to the support frame, a plurality of damping telescopic columns are fixedly connected to the lower surface of the mounting plate, the lower ends of the damping telescopic columns are fixedly connected to the base plate, the arc surface of the damping telescopic columns is sleeved with a compression spring, and the two ends of the compression spring are respectively fixedly connected to the mounting plate and the base plate.

[0018] Furthermore, the replacement mechanism also includes two guide rods fixedly connected to the card box, and the slider is slidably connected to the guide rods.

[0019] Furthermore, the surface of the stopper is rotatably connected to a plurality of rotating rods.

[0020] The beneficial effects of the present application are as follows: An easy-to-maintain centrifugal ventilator provided by the present application, through the setting of a replacement mechanism, through the cooperation between the screw, the telescopic rod, the spring and the stopper, the filter plate can be quickly fixed on the air inlet pipe, reducing the problem of low disassembly and assembly efficiency of the filter plate, facilitating the user to replace the filter plate, and thus improving the practicality of the centrifugal ventilator.

[0021] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will refer to the drawings and further elaborate on the present application in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0023] Figure 1 is an overall schematic diagram of an easy-to-maintain centrifugal ventilator in the present application;

[0024] Figure 2 is a schematic structural diagram from another perspective of the present application;

[0025] Figure 3 is a schematic structural diagram of the maintenance mechanism in the present application;

[0026] Figure 4 is a schematic cross-sectional structural diagram of the cartridge in the present application;

[0027] Figure 5 is in the present application Figure 2 is an enlarged structural diagram of part A.

[0028] Among them, the reference numerals in the drawings are as follows:

[0029] 1, support frame; 11, impeller box; 12, air inlet pipe; 13, air outlet; 14, motor; 15, belt; 16, coupling; 2, maintenance mechanism; 21, arc plate; 22, rotating shaft; 23, bolt; 24, rubber pad; 3, base mechanism; 31, mounting plate; 32, damping telescopic column; 33, compression spring; 34, bottom plate; 4, replacement mechanism; 401, filter plate; 402, card slot; 403, cartridge; 404, screw; 405, guide rod; 406, slider; 407, telescopic rod; 408, stopper; 409, spring; 410, rotating rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to elaborate on the present application in detail.

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] like Figure 1 and Figure 2 As shown, the present application provides a centrifugal fan that is easy to repair, including a support frame 1, the support frame 1 includes an impeller box 11 fixedly connected to the support frame 1, an air inlet pipe 12 and an air outlet 13 are respectively installed on the impeller box 11, an impeller and a coupling 16 are installed on the impeller box 11, a motor 14 is installed on the side of the support frame 1, and a belt 15 is sleeved on a side where the motor 14 and the coupling 16 are close to each other;

[0033] First, move the centrifugal fan to the location where it is needed. Then, connect the power supply and turn it on to start the motor 14 to work. The motor 14 drives the components inside the coupling 16 to rotate through the belt 15, and then drives the impeller inside the impeller box 11 to rotate. At this time, the rotating impeller will draw air from the air inlet pipe 12 and then discharge it from the air outlet 13, thereby completing the air supply work.

[0034] like Figure 1 -and Figure 3 As shown, an inspection mechanism 2 is installed on the impeller box 11, and the inspection mechanism 2 includes a rotating shaft 22 rotatably connected to the impeller box 11, an arc plate 21 is fixedly connected to the arc surface of the rotating shaft 22, a rubber pad 24 is fixedly connected to the inner wall of the arc plate 21, a bolt 23 is slidably connected to the surface of the arc plate 21, and the bolt 23 is threadedly connected to the impeller box 11;

[0035] By unscrewing the bolts 23 , the arc plate 21 can be opened, thereby facilitating the user to inspect and repair the impeller box 11 .

[0036] like Figure 2 and Figure 4 as well as Figure 5 As shown, a base mechanism 3 is installed on the support frame 1, and the base mechanism 3 includes a mounting plate 31 fixedly connected to the support frame 1, a plurality of damping telescopic columns 32 are fixedly connected to the lower surface of the mounting plate 31, a bottom plate 34 is fixedly connected to the lower end of the damping telescopic column 32, a compression spring 33 is sleeved on the arc surface of the damping telescopic column 32, and both ends of the compression spring 33 are fixedly connected to the mounting plate 31 and the bottom plate 34 respectively;

[0037] By providing the compression spring 33 and the damping telescopic column 32 , when the centrifugal fan is placed on the ground, the compression spring 33 can alleviate the vibration of the centrifugal fan when it is working.

[0038] like Figure 1 As shown, a replacement mechanism 4 is installed on the air inlet pipe 12, and the replacement mechanism 4 includes four card slots 402 opened on the air inlet pipe 12, and the inner wall of the card slot 402 is penetrated by a card box 403 for sliding, and rectangular grooves are opened on both sides of the card box 403, and the filter plates 401 are fixedly connected to the sides of the four card boxes 403 close to each other; the surface of the card box 403 is rotatably connected to the screw rod 404, and the inside of the card box 403 is slidably connected to a slider 406, and the slider 406 and the screw 404 are threadedly connected; two telescopic rods 407 are fixedly connected to both sides of the slider 406, and the two telescopic rods 407 are fixedly connected to the sides close to each other with a stopper 408, and the stopper 408 and the slider 406 are fixedly connected to the sides close to each other with a spring 409;

[0039] The card slot 402 is suitable for the size of the card box 403. The card box 403 is inserted into the card slot 402. At this time, the screw rod 404 is rotated to drive the slider 406 to move toward the rectangular groove. At this time, the elastic force of the spring 409 drives the telescopic rod 407 to reset, and then drives the stopper 408 to extend out of the card box 403 to complete the fixing of the filter plate 401.

[0040] like Figure 2 and Figure 4 as well as Figure 5 As shown, the replacement mechanism 4 also includes two guide rods 405 fixedly connected to the card box 403, the slider 406 is slidably connected to the guide rod 405, and the surface of the stopper 408 is rotatably connected to a plurality of rotating rods 410;

[0041] The guide rod 405 facilitates the horizontal movement of the slider 406 along the guide rod 405, reducing the shaking of the slider 406. The setting of the rotating rod 410, when it contacts the edge of the stop block 408 and the rectangular groove, the rotating rod 410 rotates with the movement of the stop block 408, which can reduce the friction between the stop block 408 and the rectangular groove.

[0042] Working principle:

[0043] When the centrifugal fan needs to be repaired, the bolt 23 only needs to be rotated away from the arc plate 21, and then the arc plate 21 is rotated to open the impeller box 11, so that the user can easily repair the impeller in the impeller box 11;

[0044] When the centrifugal fan is working, the compression spring 33 between the bottom plate 34 and the mounting plate 31 can greatly alleviate the vibration of the centrifugal fan during operation, so that the centrifugal fan can work better, and to a great extent alleviate the noise generated by the vibration of the centrifugal fan, thereby improving the performance of the centrifugal fan;

[0045] When the filter plate 401 is installed, the filter plate 401 is first placed against the port of the air inlet pipe 12. At this time, the screw 404 is rotated to drive the telescopic rod 407 on the slider 406 to move. The telescopic rod 407 drives the block 408 away from the rectangular groove and enters the interior of the card box 403. When the block 408 moves, it is blocked by the edge of the rectangular groove and can smoothly enter the card box 403 under the action of the rotating rod 410. At this time, the telescopic rod 407 and the spring 409 are contracted, and then the card box 403 is inserted into the card slot 402. At this time, the screw 404 is rotated in the opposite direction to drive the slider 406 to move toward the rectangular groove. At this time, the block 408 loses its obstruction, and the elastic force of the spring 409 drives the telescopic rod 407 to reset, thereby driving the block 408 to extend out of the card box 403, completing the fixation of the filter plate 401, which is convenient for quick disassembly and assembly of the filter plate 401.

[0046] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A centrifugal fan that is easy to maintain, characterized in that: include, Support frame (1); An impeller box (11), the impeller box (11) being fixedly connected to the support frame (1), and an air inlet pipe (12) and an air outlet (13) being installed on the surface of the impeller box (11); An inspection mechanism (2), the inspection mechanism (2) comprising an arc-shaped plate (21) mounted on the impeller box (11), the arc-shaped plate (21) facilitating a user to open the impeller box (11); A base mechanism (3), the base mechanism (3) comprising a base plate (34) mounted on the support frame (1), the base plate (34) being used to support the centrifugal fan; A replacement mechanism (4), the replacement mechanism (4) comprising four card slots (402) provided on the air inlet pipe (12), a card box (403) slidingly passing through the inner wall of the card slot (402), rectangular grooves provided on both sides of the card box (403), and filter plates (401) fixedly connected to the surfaces of the four card boxes (403) that are close to each other; The surface of the card box (403) is rotatably connected to a screw rod (404), the interior of the card box (403) is slidably connected to a slider (406), and the slider (406) and the screw rod (404) are threadedly connected; Two telescopic rods (407) are fixedly connected to both sides of the slider (406); a stopper (408) is fixedly connected to the sides of the two telescopic rods (407) that are close to each other; and a spring (409) is fixedly connected to the sides of the stopper (408) and the slider (406) that are close to each other; The card slot (402) is adapted to the size of the card box (403). The card box (403) is inserted into the card slot (402). The screw rod (404) is then rotated to drive the slider (406) to move toward the rectangular groove. The elastic force of the spring (409) then drives the telescopic rod (407) to reset, thereby driving the stopper (408) to extend out of the card box (403), thereby completing the fixation of the filter plate (401).

2. A centrifugal fan that is easy to maintain according to claim 1, characterized in that: The inspection mechanism (2) comprises a rotating shaft (22) rotatably connected to the impeller box (11); an arcuate plate (21) is fixedly connected to the arc surface of the rotating shaft (22); a rubber pad (24) is fixedly connected to the inner wall of the arcuate plate (21); a bolt (23) is slidably connected to the surface of the arcuate plate (21); and the bolt (23) is threadedly connected to the impeller box (11).

3. The centrifugal fan that is easy to maintain according to claim 1 is characterized in that: The base mechanism (3) comprises a mounting plate (31) fixedly connected to the support frame (1); a plurality of damping telescopic columns (32) are fixedly connected to the lower surface of the mounting plate (31); the lower ends of the damping telescopic columns (32) are fixedly connected to a bottom plate (34); the arc surface of the damping telescopic column (32) is sleeved with a compression spring (33); and the two ends of the compression spring (33) are respectively fixedly connected to the mounting plate (31) and the bottom plate (34).

4. The centrifugal fan that is easy to maintain according to claim 1 is characterized in that: The replacement mechanism (4) further comprises two guide rods (405) fixedly connected to the card box (403), and the slider (406) is slidably connected to the guide rods (405).

5. The centrifugal fan that is easy to maintain according to claim 1 is characterized in that: A plurality of rotating rods (410) are rotatably connected to the surface of the stopper (408).

Images