Centrifugal fan with dustproof protection mechanism

Abstract

The centrifugal fan with the dustproof protection mechanism relates to the technical field of centrifugal fans and comprises an outer shell, an installation seat and an air guide pipe, the installation seat is welded to the bottom of the outer shell, the air guide pipe is connected to the top of the outer shell, and a connecting disc is welded to the side, away from the outer shell, of the air guide pipe. And fan blades are mounted in the outer shell through a mounting shaft. According to the centrifugal fan with the dustproof protection mechanism, the mounting frame and the pushing plate are arranged, dismounting and mounting do not need to be conducted repeatedly in a locking bolt connection mode, the dustproof net bodies can be protected and rapidly replaced in a lossless mode, the air inlet efficiency of the air inlet can be effectively kept, and a plurality of clean dustproof net bodies can be placed at a time for replacement; the centrifugal fan with the dustproof protection mechanism does not need repeated operation of operators, is time-saving and convenient, and solves the problems that after a dustproof net is used for a long time, dust is accumulated on the surface, so that meshes are blocked, and the air inlet amount is suddenly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan with a dust-proof protection mechanism. Background Technique

[0002] A centrifugal fan is a fluid machine that converts mechanical energy into gas pressure energy and is used to transport gas. It has the characteristics of large air volume, stable performance, and smooth rotation. It can be applied to ventilation in chemical industry, metallurgy, electric power, factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced draft in boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, and drying and selection of grains.

[0003] A centrifugal fan consists of a housing and a centrifugal impeller. When in use, the centrifugal impeller inside the housing is started through an external drive assembly. When the centrifugal impeller rotates, it first sucks in the external gas into the housing and then accelerates it, and then decelerates to change the gas flow direction. A dust-proof net is provided at the air inlet of the centrifugal fan housing. However, after long-term use, dust will accumulate on the surface of the dust-proof net, resulting in blockage of the mesh holes and a sharp reduction in the air intake volume. Content of the Utility Model

[0004] The purpose of the utility model is to provide a centrifugal fan with a dust-proof protection mechanism to solve the problem that after long-term use of the dust-proof net, dust will accumulate on the surface, resulting in blockage of the mesh holes and a sharp reduction in the air intake volume as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A centrifugal fan with a dust-proof protection mechanism, including a housing body, a mounting seat, and a duct.

[0006] The mounting seat is welded to the bottom of the housing body, the duct is connected to the top of the housing body, a connection plate is welded to the side of the duct away from the housing body, a wind blade is installed inside the housing body through a mounting shaft, a mounting frame is installed on one side of the housing body, air inlets are opened inside both the housing body and the mounting frame, a dust-proof net body is placed inside the mounting frame, and limiting grooves are equidistantly opened on the outer side of the dust-proof net body.

[0007] Preferably, an electric telescopic rod is installed on the top of the mounting frame, the bottom of the electric telescopic rod is inserted into the adjacent limiting groove through a limiting block, and a pushing plate is arranged inside the mounting frame.

[0008] Preferably, the inside of the pushing plate is threadedly connected to a driving screw through a threaded hole, a driving motor is installed inside the mounting frame, and the output end of the driving motor is installed on one end of the driving screw through a coupling.

[0009] Preferably, the other end of the driving screw is rotatably connected to the mounting frame through a bearing seat. One side of the mounting frame is rotatably connected to one end of the movable plate through a rotating shaft. Magnetic attraction blocks are installed at the other end of the movable plate and inside the outer housing. The adjacent sides of the two magnetic attraction blocks attract each other.

[0010] Preferably, a storage frame is welded to one side of the mounting frame. Inside the storage frame, a push plate is elastically connected to the storage frame through a return spring. Docking grooves are symmetrically formed on both sides of the storage frame.

[0011] Preferably, a limiting frame is inserted into one side of the storage frame. Installation grooves are symmetrically formed inside the limiting frame. A connecting spring is installed inside the installation groove.

[0012] Preferably, one end of the connecting spring is connected to a plugging block. The outer sides of the two plugging blocks are respectively plugged into the adjacent plugging block.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The centrifugal fan with a dust-proof protection mechanism is provided with a mounting frame and a pushing plate. It is not necessary to repeatedly disassemble and assemble by means of locking bolts. The dust-proof net body can be protected and quickly replaced without damage, and the air intake efficiency of the air inlet can be effectively maintained. Multiple clean dust-proof net bodies can be placed at one time for replacement, without the need for operators to repeatedly operate, which is time-saving and convenient. It solves the problem that dust will accumulate on the surface after the dust-proof net is used for a long time, resulting in blockage of the mesh holes and a sharp reduction in the air intake volume.

[0014] 1. For the centrifugal fan with a dust-proof protection mechanism, to avoid the influence of dust blockage of the mesh holes on the air suction effect after the dust-proof net is used for a long time, when the dust-proof net is used for a period of time, the electric telescopic rod and the driving motor are started. The electric telescopic rod drives the limiting block to retract. The driving motor drives the driving screw to rotate through a coupling, driving the pushing plate to push a new dust-proof net body to the bottom of the electric telescopic rod. Then, the electric telescopic rod and the driving motor are started again. The electric telescopic rod drives the limiting block to be inserted into and limited by the limiting groove at the top of the new dust-proof net body. The driving motor drives the pushing plate to reset. The centrifugal fan with a dust-proof protection mechanism is provided with a mounting frame and a pushing plate. It is not necessary to repeatedly disassemble and assemble by means of locking bolts. The dust-proof net body can be protected and quickly replaced without damage, and the air intake efficiency of the air inlet can be effectively maintained.

[0015] 2. For the centrifugal fan with a dust-proof protection mechanism, to facilitate the replacement of the dust-proof net body, the clean dust-proof net bodies are sequentially stored inside the storage frame. During use, the return spring inside the storage frame is used in cooperation with the push plate to sequentially push the clean dust-proof net bodies to the side where the pushing plate is located, and cooperate with the pushing plate for quick and multiple replacements of the dust-proof net body. The centrifugal fan with a dust-proof protection mechanism can place multiple clean dust-proof net bodies at one time for replacement, without the need for operators to repeatedly operate, which is time-saving and convenient. Brief Description of the Drawings

[0016] Figure 1 This is a schematic top cross-sectional structure diagram of the centrifugal fan of the present utility model;

[0017] Figure 2 This is a schematic front cross-sectional structure diagram of the mounting frame of the present utility model;

[0018] Figure 3 This is a schematic top cross-sectional structure diagram of the mounting frame of the present utility model;

[0019] Figure 4 This is a schematic rear cross-sectional structure diagram of the storage frame of the present utility model.

[0020] In the figure: 1. Outer shell; 101. Mounting seat; 102. Air duct; 103. Connecting plate; 104. Air inlet; 2. Mounting shaft; 201. Blades; 3. Dust-proof net body; 301. Limiting groove; 4. Mounting frame; 401. Electric telescopic rod; 402. Limiting block; 5. Pushing plate; 501. Driving screw; 502. Driving motor; 6. Movable plate; 601. Magnetic block; 7. Storage frame; 701. Return spring; 702. Pushing plate; 703. Docking groove; 8. Limiting frame; 801. Mounting groove; 802. Connecting spring; 803. Inserting block. Detailed Description of the Preferred Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 , the present utility model provides a technical solution: a centrifugal fan with a dust-proof protection mechanism, including an outer shell 1, a mounting seat 101 and an air duct 102,

[0023] The mounting seat 101 is welded to the bottom of the outer shell 1, the air duct 102 is connected to the top of the outer shell 1, the connecting plate 103 is welded to the side of the air duct 102 away from the outer shell 1, the blades 201 are installed inside the outer shell 1 through the mounting shaft 2, the mounting frame 4 is installed on one side of the outer shell 1, the air inlets 104 are opened inside both the outer shell 1 and the mounting frame 4, the dust-proof net body 3 is placed inside the mounting frame 4, and the limiting grooves 301 are equidistantly opened on the outer side of the dust-proof net body 3;

[0024] An electric telescopic rod 401 is installed at the top of the installation frame 4. The bottom of the electric telescopic rod 401 is inserted into the adjacent limit groove 301 through a limit block 402. A push plate 5 is arranged inside the installation frame 4. The push plate 5 is in threaded connection with a driving screw 501 through a threaded hole. A driving motor 502 is installed inside the installation frame 4. The output end of the driving motor 502 is installed with one end of the driving screw 501 through a coupling. The other end of the driving screw 501 is rotatably connected to the installation frame 4 through a bearing seat. One side of the installation frame 4 is rotatably connected to one end of a movable plate 6 through a rotating shaft. Magnetic attraction blocks 601 are installed at the other ends of the movable plate 6 and inside the outer shell 1. The adjacent sides of the two magnetic attraction blocks 601 attract each other.

[0025] During specific implementation, to avoid the influence of dust clogging the mesh holes on the air suction effect after the dust-proof net is used for a long time, when the dust-proof net has been used for a period of time, start the electric telescopic rod 401 and the driving motor 502. The electric telescopic rod 401 drives the limit block 402 to retract and no longer abuts against and limits the limit groove 301 at the top of the dust-proof net body 3 at the air inlet 104. The driving motor 502 drives the driving screw 501 rotatably installed on the outer shell 1 through a coupling through the bearing seat to rotate. When the driving screw 501 rotates, the outer side thereof acts on the threaded hole inside the push plate 5 through threads, driving the push plate 5 to push towards the side where the air inlet 104 is located until a new dust-proof net body 3 is pushed to the bottom of the electric telescopic rod 401. Then start the electric telescopic rod 401 and the driving motor 502 again. The electric telescopic rod 401 drives the limit block 402 to be inserted into and limit the limit groove 301 at the top of the new dust-proof net body 3, and the driving motor 502 drives the push plate 5 to reset, thus completing the rapid replacement of the dust-proof net body 3.

[0026] At this time, the dust-proof net body 3 accumulated with dust will be pushed to the movable plate 6 and wait to be pushed out of the inside of the installation frame 4 by the magnetic attraction of the magnetic attraction block 601 at the movable plate 6 when the driving motor 502 is started next time. This centrifugal fan with a dust-proof protection mechanism is provided with an installation frame 4 and a push plate 5, and there is no need to repeatedly disassemble and assemble by means of locking bolts, and the dust-proof net body 3 can be protected and quickly replaced without damage, effectively maintaining the air inlet efficiency of the air inlet 104.

[0027] Refer to Figure 1 、 Figure 3 and Figure 4It can be seen that a storage frame 7 is welded to one side of the installation frame 4, and the storage frame 7 is elastically connected to the push plate 702 through a reset spring 701. Docking grooves 703 are symmetrically provided on both sides of the storage frame 7. A limiting frame 8 is inserted into one side of the storage frame 7, and mounting grooves 801 are symmetrically provided inside the limiting frame 8. A connecting spring 802 is installed inside the mounting groove 801, and one end of the connecting spring 802 is connected to a plug-in block 803. The outer sides of the two plug-in blocks 803 are respectively plugged with the plug-in blocks 803 on the adjacent side.

[0028] In the specific implementation, in order to facilitate the replacement of the dustproof net body 3, the clean dustproof net body 3 is stored in the storage frame 7 in sequence. When in use, the reset spring 701 inside the storage frame 7 cooperates with the push plate 702 to push the clean dustproof net body 3 to the side where the push plate 5 is located in sequence, and the push plate 5 is cooperated to perform rapid and multiple replacements of the dustproof net body 3. When a clean dustproof net body 3 needs to be added, the plug-in block 803 inserted in the docking groove 703 opened on both sides of the storage frame 7 is pushed inward until the plug-in block After 803 is detached from the docking slot 703, the limit frame 8 can be removed, and the clean dustproof net body 3 can be stored in the storage frame 7, and then the plug-in block 803 can be pushed again. After the limit frame 8 is docked with the storage frame 7, the plug-in block 803 can be released, and the plug-in block 803 can be popped out under the action of the connecting spring 802 inside the installation slot 801, and can be plugged and limited with the docking slot 703 again. The centrifugal fan with a dustproof protection mechanism can hold multiple clean dustproof net bodies 3 for replacement at one time, without the need for repeated operations by the operator, which is time-saving and convenient.

[0029] To sum up, when using the centrifugal fan with dust protection mechanism, after the centrifugal fan is installed and connected with the corresponding drive component, it is reinforced by the mounting seat 101, and the fan blade 201 is driven to rotate through the mounting shaft 2 by the corresponding drive component, and the outside air is filtered through the air inlet 104 and the dustproof net body 3 at the air inlet 104, and then sucked into the outer shell 1, and then accelerated and decelerated to change the gas flow direction, and the inhaled air is guided to the pipe connected to the connecting plate 103 through the air duct 102. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A centrifugal fan with a dust-proof protection mechanism, comprising a housing (1), a mounting base (101) and a duct (102), characterized in that: The mounting base (101) is welded to the bottom of the housing (1), the duct (102) is connected to the top of the housing (1), a connection plate (103) is welded to the side of the duct (102) away from the housing (1), a wind blade (201) is installed inside the housing (1) through a mounting shaft (2), a mounting frame (4) is installed on one side of the housing (1), air inlets (104) are provided inside both the housing (1) and the mounting frame (4), a dust-proof net body (3) is placed inside the mounting frame (4), and limiting grooves (301) are equidistantly provided on the outer side of the dust-proof net body (3).

2. The centrifugal fan with a dust-proof protection mechanism according to claim 1, wherein: An electric telescopic rod (401) is installed on the top of the mounting frame (4), the bottom of the electric telescopic rod (401) is inserted into the adjacent limiting groove (301) through a limiting block (402), and a pushing plate (5) is arranged inside the mounting frame (4).

3. The centrifugal fan with a dust-proof protection mechanism according to claim 2, wherein: The pushing plate (5) is in threaded connection with a driving screw rod (501) through a threaded hole, a driving motor (502) is installed inside the mounting frame (4), and the output end of the driving motor (502) is installed at one end of the driving screw rod (501) through a coupling.

4. The centrifugal fan with a dust-proof protection mechanism according to claim 3, characterized in that: The other end of the driving screw rod (501) is rotatably connected to the mounting frame (4) through a bearing seat, one side of the mounting frame (4) is rotatably connected to one end of a movable plate (6) through a rotating shaft, magnetic attraction blocks (601) are installed at the other ends of the movable plate (6) and inside the housing (1), and the adjacent sides of the two magnetic attraction blocks (601) attract each other.

5. The centrifugal fan with a dust-proof protection mechanism according to claim 4, characterized in that: A storage frame (7) is welded to one side of the mounting frame (4), a push plate (702) is elastically connected to the inside of the storage frame (7) through a return spring (701), and docking grooves (703) are symmetrically provided on both sides of the storage frame (7).

6. The centrifugal fan with a dust-proof protection mechanism according to claim 5, wherein: A limiting frame (8) is inserted into one side of the storage frame (7), mounting grooves (801) are symmetrically provided inside the limiting frame (8), and connecting springs (802) are installed inside the mounting grooves (801).

7. The centrifugal fan with a dust-proof protection mechanism according to claim 6, characterized in that: One end of the connecting spring (802) is connected to a plugging block (803), and the outer sides of the two plugging blocks (803) are respectively inserted into the adjacent plugging block (803).

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