Dustproof structure of multi-blade centrifugal fan

Abstract

The utility model belongs to the technical field of centrifugal fans, and particularly relates to a dustproof structure of a multi-blade centrifugal fan, which comprises a centrifugal fan, locking clamping plates are fixed on two sides of the centrifugal fan, a clamping groove is arranged on one side of each locking clamping plate, an elastic sheet is mounted in each clamping groove, the elastic sheet is V-shaped, and the locking clamping plates are fixed on the locking clamping plates. The short side of the elastic piece is arranged in the clamping groove, and dustproof frames are arranged on the two sides of the centrifugal fan. The dust-proof device is simple and convenient to mount and dismount, the dust-proof frames are rotationally mounted on the two sides of the centrifugal fan, the clamping blocks are clamped through the clamping grooves, mounting and fixing of the dust-proof frames are achieved, after long-time use, the dust-proof nets can be rotated, the dust-proof nets make contact with the cleaning brushes, the cleaning brushes brush off dust on the dust-proof nets, the dust-proof nets are convenient to clean, and the service life of the dust-proof nets is prolonged. The diameter of the dustproof net is larger than that of the air inlet of the centrifugal fan, and air pressure in the dustproof frame and the dustproof net is small, so that durability of the dustproof net is improved, and the dustproof net is prevented from bearing large pressure and being damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to centrifugal fan technical field, concretely relates to a dustproof structure of multi-blade centrifugal fan. BACKGROUND

[0002] Centrifugal fan is a common ventilation equipment, mainly throw off and discharge gas through centrifugal force, has the characteristics of large exhaust capacity, high air pressure, is widely used in multiple fields.

[0003] It is found through the inquiry that the publication (announcement) number: CN215979998U discloses a dustproof centrifugal fan, and the technical scheme in this technology discloses "including fan shell, the one end of fan shell is equipped with air outlet, the one side of fan shell is equipped with air inlet, the air inlet is installed with the noise reduction air inlet mechanism, the inside of noise reduction air inlet mechanism is equipped with dustproof mechanism, the inside of noise reduction air inlet mechanism is equipped with the air guide mechanism to the dustproof mechanism relative both sides, the inside of fan shell is rotatably equipped with fan shaft" and the like technical scheme; has "the utility model discloses a series of structures are set up, and the noise reduction air inlet mechanism is filtered and dustproof to the air entering the centrifugal fan, increases the functionality of centrifugal fan, and the filtration dustproof is convenient to use, prolongs the service life of centrifugal fan, has good air inlet noise reduction performance, and the noise pollution is little" and the like technical effect;

[0004] But the dustproof structure on the existing centrifugal fan is all set up at the air inlet, and the installation and removal are relatively inconvenient, and it is relatively inconvenient when maintaining and cleaning, the dustproof filter plate is driven by the motor of the centrifugal fan, and the cleaning plate rotates simultaneously when the centrifugal fan rotates, and long-time use can easily lead to dustproof filter plate abrasion.

[0005] To solve the above problems, a dustproof structure of a multi-blade centrifugal fan is provided in the present application. UTILITY MODEL CONTENTS

[0006] To solve the problems raised in the above background art, the utility model provides a dustproof structure of a multi-blade centrifugal fan, which has the characteristics of convenient installation and removal, convenient dust cleaning, reduced pressure on the dust screen, and stable and firm.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a dustproof structure of a multi-blade centrifugal fan, comprising a centrifugal fan, lock clamps are fixed on both sides of the centrifugal fan, a clamping groove is formed on one side of the lock clamp, a spring piece is installed in the clamping groove, the spring piece is √-shaped, the shorter side of the spring piece is arranged inside the clamping groove, dustproof frames are arranged on both sides of the centrifugal fan, clamping blocks are fixed at positions corresponding to the lock clamps of the dustproof frames, the clamping blocks and the clamping grooves are matched, and dust screens are installed on the side of the clamping blocks away from the centrifugal fan.

[0008] As a kind of dustproof structure of the utility model multi-blade centrifugal fan, the rim of dustproof frame is boss structure, the rim of dust screen is engaged in the boss of dustproof frame, dust screen and dustproof frame are rotationally connected, the inner side of dustproof frame is fixed with cleaning brush, the surface of cleaning brush and dust screen are attached.

[0009] As a kind of dustproof structure of the utility model multi-blade centrifugal fan, the inner side of dustproof frame is provided with through hole matched with the air inlet of centrifugal fan.

[0010] As a kind of dustproof structure of the utility model multi-blade centrifugal fan, the cleaning brush is provided with three groups, and three groups of cleaning brush are equidistantly distributed.

[0011] As a kind of dustproof structure of the utility model multi-blade centrifugal fan, the center of cleaning brush is provided with pressure sensor.

[0012] As a kind of dustproof structure of the utility model multi-blade centrifugal fan, the outer wall of dust screen is provided with knurling.

[0013] Compared with prior art, the utility model has the beneficial effects that:

[0014] The utility model is simple and convenient to install and dismount, dustproof frame is rotatably installed on the two sides of centrifugal fan, and the mounting and fixing of dustproof frame are realized by clamping block clamped in clamping groove, dust screen on dustproof frame carries out dustproof and protection to centrifugal fan, after long time use, dust screen can be rotated, dust screen and cleaning brush contact each other, dust on dust screen is brushed off by cleaning brush, dust screen is cleaned conveniently, since the diameter of dust screen is greater than the diameter of air inlet of centrifugal fan, the wind pressure in dustproof frame and dust screen is small, so the durability of dust screen is improved, and dust screen is prevented from being damaged by bearing large pressure. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide further understanding of the utility model, and constitute part of specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute limitation to the utility model.In the drawings:

[0016] Figure 1 It is the structural schematic diagram of the utility model;

[0017] Figure 2 It is the internal structure schematic diagram of centrifugal fan in the utility model;

[0018] Figure 3 It is the internal structure schematic diagram of dustproof frame in the utility model;

[0019] Figure 4 It is the left view structural schematic diagram of the utility model;

[0020] Figure 5 It is the connection structure schematic view of the dustproof frame and the dustproof net in the utility model;

[0021] Figure 6 It is the connection structure schematic view of the locking clamping plate and the clamping block in the utility model;

[0022] In the drawing: 1, centrifugal fan; 2, locking clamping plate; 21, clamping groove; 22, elastic sheet; 3, dustproof frame; 4, clamping block; 5, dustproof net; 6, cleaning brush; 7, motor; 8, impeller. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment 1

[0025] When the existing centrifugal fan prevents dust, the filter screen is usually installed at the air inlet. After long-term use, the dust on the filter screen is difficult to clean, and the filter screen will cause resistance to the air inlet of the fan. The filter screen is inconvenient to replace. Therefore, in order to solve this technical problem, the following improvement scheme is proposed.

[0026] As shown in Figures 1 to 6 ;

[0027] A dustproof structure of a multi-blade centrifugal fan, comprising a centrifugal fan 1, locking clamping plates 2 are fixed on both sides of the centrifugal fan 1, clamping grooves 21 are formed on one side of the locking clamping plates 2, elastic sheets 22 are installed in the clamping grooves 21, the elastic sheets 22 are square-shaped, the shorter side of the elastic sheets 22 is arranged inside the clamping grooves 21, dustproof frames 3 are arranged on both sides of the centrifugal fan 1, clamping blocks 4 are fixed at positions corresponding to the locking clamping plates 2 of the dustproof frames 3, the clamping blocks 4 and the clamping grooves 21 are matched, and dustproof nets 5 are installed on the side, away from the centrifugal fan 1, of the clamping blocks 4.

[0028] In the embodiment, the dustproof net 5 is installed on both sides of the centrifugal fan 1 through the dustproof frame 3, and air is sucked from both sides of the centrifugal fan 1 when the centrifugal fan 1 is in operation, and since the diameter of the dustproof frame 3 is greater than the air inlet of the centrifugal fan 1, the wind pressure borne by the dustproof net 5 installed on the dustproof frame 3 is smaller than that borne by the dustproof net 5 directly installed at the air inlet, and therefore the durability of the dustproof net 5 is improved.

[0029] It should be noted that: since the slopes on both sides of the square-shaped clamping groove 21 are different, the angles of the force components of the spring are different, so that the resistance change curve is different when the clamping block 4 enters the clamping groove 21, and the clamping block 4 is facilitated to enter the locking clamping plate 2 and be firmly and stably clamped.

[0030] Further,

[0031] In an optional embodiment, the edge of the dustproof frame 3 is in a boss structure, the edge of the dustproof net 5 is clamped in the boss of the dustproof frame 3, the dustproof net 5 and the dustproof frame 3 are rotationally connected, and the inner side of the dustproof frame 3 is fixed with the cleaning brush 6, and the surface of the cleaning brush 6 is attached to the dustproof net 5.

[0032] In the embodiment, through the design, Figure 5 as shown, the dustproof net 5 and the dustproof frame 3 are rotatable, the dustproof net 5 is clamped at the edge of the dustproof frame 3, and the cleaning brush 6 is at the inner side of the dustproof frame 3, so that when the dustproof net 5 is rotated, the cleaning brush 6 brushes the inner side of the dustproof net 5, and dust falls off from the dustproof net 5 outward, thereby cleaning the dustproof net 5, and the operation is simple and the dustproof net 5 is facilitated to be cleaned and maintained.

[0033] Further,

[0034] In an optional embodiment, the inner side of the dustproof frame 3 is provided with a through hole matched with the air inlet of the centrifugal fan 1.

[0035] In the embodiment, through the design, the inner side of the dustproof frame 3 is matched with the centrifugal fan 1, and the dustproof frame 3 does not affect the air inlet of the centrifugal fan 1.

[0036] Further,

[0037] In an optional embodiment, the cleaning brush 6 is provided with three groups, and the three groups of cleaning brushes 6 are equidistantly distributed.

[0038] In the embodiment, through the design, the cleaning brush 6 can support the dustproof net 5, and deformation of the dustproof net 5 caused by wind pressure is prevented when the centrifugal fan 1 is in operation.

[0039] Further, the cleaning brush 6 is provided with a pressure sensor.

[0040] In an optional embodiment, the center of the cleaning brush 6 is provided with a pressure sensor.

[0041] In this embodiment, the pressure sensor in the cleaning brush 6 can detect the pressure borne by the dust screen 5 and transmit the parameter to the control unit.

[0042] Further, the dust screen 5 is provided with knurls on the outer wall.

[0043] In this embodiment, the knurls facilitate the rotation of the dust screen 5.

[0044] In this embodiment, the knurls facilitate the rotation of the dust screen 5.

[0045] The working principle and use process of the utility model: the dust screen 5 in the utility model is installed on the both sides of the centrifugal fan 1 through the dust frame 3, the centrifugal fan 1 inhales air from the both sides when carrying out the air supply operation, because the diameter of the dust frame 3 is greater than the air inlet of the centrifugal fan 1, the dust screen 5 installed on the dust frame 3 bears smaller wind pressure than directly installed in the air inlet, therefore the durability of the dust screen 5 is improved, when installing the dust frame 3 of the utility model, the dust frame 3 is covered on the both sides of the centrifugal fan 1, the clamping block 4 is aligned to the clamping groove 21 of the locking clamp plate 2, the dust frame 3 is rotated to make the clamping block 4 inserted into the locking clamp plate 2, the elastic sheet 22 in the clamping groove 21 makes the clamping block 4 and the inner wall of the locking clamp plate 2 firmly installed, when disassembling, the dust frame 3 is reversely rotated, the dust screen 5 and the dust frame 3 can be disassembled, the dust screen 5 is clamped in the edge of the dust frame 3, the cleaning brush 6 is in the inner side of the dust frame 3, when the dust screen 5 is rotated, the cleaning brush 6 brushes the inner side of the dust screen 5, makes the dust fall off from the dust screen 5, thereby cleaning the dust screen 5, the operation is simple, the dust screen 5 is conveniently cleaned and maintained, the cleaning brush 6 can support the dust screen 5, when the centrifugal fan 1 carries out the air supply operation, the wind pressure is prevented from deforming the dust screen 5.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dust-proof structure for a multi-blade centrifugal fan, characterized in that: The centrifugal fan (1) comprises a centrifugal fan (1), wherein locking clamps (2) are fixed on both sides of the centrifugal fan (1), a card slot (21) is provided on one side of the locking clamp (2), a spring piece (22) is installed in the card slot (21), the spring piece (22) is in a √ shape, and the shorter side of the spring piece (22) is arranged inside the card slot (21), dustproof frames (3) are provided on both sides of the centrifugal fan (1), a card block (4) is fixed at a position of the dustproof frame (3) corresponding to the locking clamp (2), the card block (4) matches the card slot (21), and a dustproof net (5) is installed on the side of the card block (4) away from the centrifugal fan (1).

2. The dust-proof structure of a multi-blade centrifugal fan according to claim 1, characterized in that: The edge of the dustproof frame (3) is a boss structure, the edge of the dustproof net (5) is engaged in the boss of the dustproof frame (3), the dustproof net (5) and the dustproof frame (3) are rotatably connected, and a cleaning brush (6) is fixed on the inner side of the dustproof frame (3), and the surface of the cleaning brush (6) is in contact with the dustproof net (5).

3. The dust-proof structure of a multi-blade centrifugal fan according to claim 1, characterized in that: A through hole matching the air inlet of the centrifugal fan (1) is provided on the inner side of the dustproof frame (3).

4. The dust-proof structure of a multi-blade centrifugal fan according to claim 2, characterized in that: The cleaning brushes (6) are provided in three groups, and the three groups of cleaning brushes (6) are distributed at equal intervals.

5. The dust-proof structure of a multi-blade centrifugal fan according to claim 4, characterized in that: A pressure sensor is installed at the center of the cleaning brush (6).

6. The dust-proof structure of a multi-blade centrifugal fan according to claim 2, characterized in that: The outer side wall of the dustproof net (5) is provided with knurling.

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