CN214698422U

CN214698422U - Centrifugal fan

Info

Publication number: CN214698422U
Application number: CN202120735499.6U
Authority: CN
Inventors: 刘汉锋
Original assignee: Dezhou Shengrong Air Conditioning Equipment Co ltd
Current assignee: Dezhou Shengrong Air Conditioning Equipment Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-12
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a centrifugal fan, including the centrifugal fan main part, air inlet channel has been seted up in the centrifugal fan main part, and air inlet channel one side is provided with fixed slot, the inside connection fixture block that is provided with of fixed slot, and connect fixture block one side and be provided with first pivot, first pivot one side is connected with the swing joint head, and swing joint head one side is provided with dust keeper, the dust keeper inner wall is seted up flutedly, and the inside inserting of dust keeper is equipped with the second filter screen, second filter screen front end is provided with first filter screen. This centrifugal fan can freely carry out the dust keeper of dismouting through the outer wall setting at the centrifugal fan main part, makes the centrifugal fan main part filter the dust in the air current of process through the inside second filter screen of dust keeper and first filter screen when during operation or shut down, reduces the inside that the dust enters into the centrifugal fan main part from this, reduces the degree of difficulty of clearance centrifugal fan main part, guarantees the normal use of centrifugal fan main part.

Description

Centrifugal fan

Technical Field

The utility model relates to a centrifugal fan equipment technical field specifically is a centrifugal fan.

Background

The centrifugal fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, and is a driven fluid machine; centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion; the centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy (pressure); in a single-stage centrifugal fan, gas enters an impeller from an axial direction, changes into a radial direction when flowing through the impeller, and then enters a diffuser; in the diffuser, the gas changes the flow direction and the cross-sectional area of the pipe increases to decelerate the gas flow, which converts kinetic energy into pressure energy; the pressure increase mainly occurs in the impeller and secondly occurs in the diffusion process; in a multistage centrifugal fan, a flow reverser is used to direct the air flow to the next impeller, creating a higher pressure.

The centrifugal fan that has now is using and the in-process of inoperative, and the air current then can bring the dust into centrifugal fan's inside through centrifugal fan, makes centrifugal fan's impeller accumulation dust, and it is comparatively troublesome not only to clear up, also can bring the influence to centrifugal fan's wind speed etc. to need improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal fan to solve the inside problem that the easy accumulation dust influence was used of the centrifugal fan who proposes in the above-mentioned background art.

In order to achieve the purpose, the utility model provides a following technical scheme, a centrifugal fan, including the centrifugal fan main part, air inlet channel has been seted up in the centrifugal fan main part, and air inlet channel one side is provided with fixed slot to the air inlet channel outer wall is provided with the flange, the inside connection fixture block that is provided with of fixed slot, and connect fixture block one side and be provided with first pivot, first pivot one side is connected with the swing joint head, and swing joint head one side is provided with dust keeper, the dust keeper inner wall sets up flutedly, and the inside second filter screen that is equipped with of inserting of dust keeper, second filter screen front end is provided with first filter screen, and second filter screen and first filter screen outer wall are provided with spacing cardboard to spacing cardboard is located dust keeper's recess.

Preferably, the inner wall of the dustproof device is provided with a second rotating shaft, the outer wall of the second rotating shaft is provided with a limiting clamping rod, and the bottom of the limiting clamping rod is in contact with a limiting clamping plate.

Preferably, the fixed clamping groove is provided with a set of at both ends respectively around the centrifugal fan main part, and a set of is provided with a plurality ofly, and fixed clamping groove bottom is seal structure.

Preferably, the fixed clamping groove is matched with the connecting clamping block in structure, and the fixed clamping groove and the connecting clamping block form movable connection.

Preferably, an air outlet channel is arranged at the upper end of the centrifugal fan main body, and a fan impeller is installed on the inner wall of the centrifugal fan main body.

Preferably, an auxiliary noise reduction layer is arranged on the outer wall of the centrifugal fan main body, and the auxiliary noise reduction layer is made of sponge.

Compared with the prior art, the beneficial effects of the utility model are that: this centrifugal fan can freely carry out the dust keeper of dismouting through the outer wall setting at the centrifugal fan main part, makes the centrifugal fan main part filter the dust in the air current of process through the inside second filter screen of dust keeper and first filter screen when during operation or shut down, reduces the inside that the dust enters into the centrifugal fan main part from this, reduces the degree of difficulty of clearance centrifugal fan main part, guarantees the normal use of centrifugal fan main part.

Drawings

Fig. 1 is a schematic structural view of a centrifugal fan of the present invention;

fig. 2 is an enlarged schematic structural view of a point a in fig. 1 of the centrifugal fan of the present invention;

FIG. 3 is a schematic view of a connection structure between a second filter screen and a first filter screen of a centrifugal fan according to the present invention;

fig. 4 is the utility model relates to a centrifugal fan fixed slot and connection fixture block connection structure sketch map.

In the figure: 1. supplementary layer of making an uproar that falls, 2, dust keeper, 3, second filter screen, 4, air-out passageway, 5, swing joint head, 6, first pivot, 7, connection fixture block, 8, fixed slot, 9, inlet air duct, 10, fan wheel, 11, second pivot, 12, spacing cardboard, 13, spacing kelly, 14, first filter screen, 15, centrifugal fan main part, 16, flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a centrifugal fan comprises a centrifugal fan body 15, an air inlet channel 9 is formed in the centrifugal fan body 15, the centrifugal fan body 15 and the air inlet channel 9 are integrally connected, a fixing clamping groove 8 is formed in one side of the air inlet channel 9, fixing clamping grooves 8 are formed in the left side and the right side of the air inlet channel 9, the fixing clamping grooves 8 are fixedly connected with the outer wall of the centrifugal fan body 15 through bolts, a flange 16 is arranged on the outer wall of the air inlet channel 9, flanges 16 are arranged at the air inlet channel 9 and the air outlet channel 4, the flanges 16 are integrally connected with the air inlet channel 9 and the air outlet channel 4, installation and flexible connection are facilitated, an air outlet channel 4 is formed in the upper end of the centrifugal fan body 15, and a fan impeller 10 is mounted on the inner wall of the centrifugal fan body 15; an auxiliary noise reduction layer 1 is arranged on the outer wall of the centrifugal fan main body 15, and the auxiliary noise reduction layer 1 is made of sponge; a connecting clamping block 7 is arranged in the fixed clamping groove 8, the fixed clamping groove 8 and the connecting clamping block 7 can be connected or separated, the dustproof device 2 is convenient to disassemble, a first rotating shaft 6 is arranged on one side of the connecting clamping block 7, the first rotating shaft 6 is inserted in the connecting clamping block 7, a group of the fixed clamping groove 8 is arranged at each of the front end and the rear end of the centrifugal fan main body 15, a plurality of the fixed clamping grooves are arranged in one group, two fixed clamping grooves are arranged in each group, and the bottom of the fixed clamping groove 8 is of a sealing structure; the fixed clamping groove 8 is matched with the connecting clamping block 7 in structure, and the fixed clamping groove 8 and the connecting clamping block 7 form movable connection; one side of the first rotating shaft 6 is connected with a movable connector 5, the left side of the first rotating shaft 6 is fixedly connected with the movable connector 5 through glue, so that the movable connector 5 can be rotationally connected with a connecting clamping block 7 through the first rotating shaft 6, one side of the movable connector 5 is provided with a dustproof device 2, the left side of the movable connector 5 is fixedly provided with the dustproof device 2 through bolts, the inner wall of the dustproof device 2 is provided with four grooves, the interior of the dustproof device 2 is inserted with a second filter screen 3, the dustproof device 2 is of a circular structure, the inner diameter of the dustproof device 2 is equal to the outer diameter of the second filter screen 3, the inner wall of the dustproof device 2 is provided with a second rotating shaft 11, the dustproof device 2 is rotationally connected with the second rotating shaft 11, the outer wall of the second rotating shaft 11 is provided with a limiting clamping rod 13, the second rotating shaft 11 is fixed with the limiting clamping rod 13 through glue, and the bottom of the limiting clamping rod 13 is contacted with the limiting clamping plate 12, the limiting clamping rod 13 can limit the limiting clamping plate 12 to fix the second filter screen 3 and the first filter screen 14; the front end of the second filter screen 3 is provided with a first filter screen 14, the second filter screen 3 is not fixed in contact with the first filter screen 14, so that the second filter screen can be used independently, the mesh size of the first filter screen 14 is smaller than that of the second filter screen 3, so that a double-filtering effect is achieved, the outer walls of the second filter screen 3 and the first filter screen 14 are provided with a limiting clamping plate 12, the second filter screen 3 and the first filter screen 14 are both fixed with the limiting clamping plate 12 through glue, the limiting clamping plate 12 is positioned in a groove of the dustproof device 2, so that the second filter screen 3 and the first filter screen 14 can be fixed in the dustproof device 2 conveniently, and the front end and the rear end of the device can be provided with fan impellers 10; this centrifugal fan can freely carry out the dust keeper 2 of dismouting through the outer wall setting at centrifugal fan main part 15, makes centrifugal fan main part 15 filter the dust in the air current of process through the inside second filter screen 3 of dust keeper 2 and first filter screen 14 when during operation or shut down, reduces the inside that the dust enters into centrifugal fan main part 15 from this, reduces the degree of difficulty of clearance centrifugal fan main part 15, guarantees centrifugal fan main part 15's normal use.

The working principle is as follows: when the centrifugal fan is used, the second filter screen 3 and the first filter screen 14 are firstly installed in the dustproof device 2, when in installation, the first filter screen 14 is firstly inserted into the dustproof device 2, the limiting clamping plate 12 on the outer wall of the first filter screen 14 is well aligned with the groove formed on the inner wall of the dustproof device 2, the second filter screen 3 is inserted into the dustproof device 2 by using the same method after the first filter screen 14 is well placed, the limiting clamping rod 13 is rotated through the second rotating shaft 11 after the second filter screen 3 is well placed, the limiting clamping rod 13 moves towards the limiting clamping plate 12 to intercept the limiting clamping plate 12, at the moment, the second filter screen 3 and the first filter screen 14 are well fixed, the dustproof device 2 is installed on the centrifugal fan main body 15 after the second filter screen is well fixed, when in installation, the connecting clamping block 7 on the dustproof device 2 is directly inserted into the fixed clamping groove 8 from the upper end of the fixed clamping groove 8, after the dustproof device 2 is installed, the dustproof device 2 is rotated towards the right side through the first rotating shaft 6, so that the dustproof device 2 covers the air inlet channel 9, at the moment, air inlet of the air inlet channel 9 is not influenced, dust can be reduced, and the working principle of the centrifugal fan is realized.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A centrifugal fan comprising a centrifugal fan body (15), characterized in that: an air inlet channel (9) is arranged on the centrifugal fan main body (15), a fixed clamping groove (8) is arranged on one side of the air inlet channel (9), a flange (16) is arranged on the outer wall of the air inlet channel (9), a connecting clamping block (7) is arranged in the fixed clamping groove (8), a first rotating shaft (6) is arranged on one side of the connecting clamping block (7), one side of the first rotating shaft (6) is connected with a movable connector (5), and one side of the movable connector (5) is provided with a dustproof device (2), the inner wall of the dustproof device (2) is provided with a groove, a second filter screen (3) is inserted in the dustproof device (2), a first filter screen (14) is arranged at the front end of the second filter screen (3), and the outer walls of the second filter screen (3) and the first filter screen (14) are provided with a limiting clamping plate (12), and the limiting clamping plate (12) is positioned in a groove of the dustproof device (2).

2. The centrifugal fan according to claim 1, wherein: the inner wall of the dustproof device (2) is provided with a second rotating shaft (11), the outer wall of the second rotating shaft (11) is provided with a limiting clamping rod (13), and the bottom of the limiting clamping rod (13) is in contact with a limiting clamping plate (12).

3. The centrifugal fan according to claim 1, wherein: the front end and the rear end of the fixed clamping groove (8) relative to the centrifugal fan main body (15) are respectively provided with a group, a plurality of groups are arranged, and the bottom of the fixed clamping groove (8) is of a sealing structure.

4. The centrifugal fan according to claim 1, wherein: the fixed clamping groove (8) is matched with the connecting clamping block (7) in structure, and the fixed clamping groove (8) and the connecting clamping block (7) form movable connection.

5. The centrifugal fan according to claim 1, wherein: an air outlet channel (4) is arranged at the upper end of the centrifugal fan main body (15), and a fan impeller (10) is installed on the inner wall of the centrifugal fan main body (15).

6. The centrifugal fan according to claim 1, wherein: the centrifugal fan is characterized in that an auxiliary noise reduction layer (1) is arranged on the outer wall of the centrifugal fan main body (15), and the auxiliary noise reduction layer (1) is made of sponge.