Clean cover for centrifugal fan

Abstract

The cleaning cover comprises an inner ring frame and an outer ring frame, an air inlet channel is arranged between the inner ring frame and the outer ring frame, the outer ring frame is fixedly connected with the inner ring frame, the outer ring frame is provided with an air inlet portion, the air inlet portion is provided with a filter screen and a cleaning mechanism, and the filter screen is arranged on the outer ring frame. A mounting mechanism used for fixing a centrifugal fan is further arranged on the outer ring frame, a mounting flange sleeve and a driving module are arranged on the inner ring frame through a shaft, the driving module is fixed to the axis of the inner ring frame through the mounting flange sleeve, and a buffer structure is further arranged at the joint of the mounting flange sleeve and the inner ring frame. The air inlet amount and the air cleanliness degree can be kept, meanwhile, the service life of the filter screen can be greatly prolonged, in the installation process, the spring bolt is rapidly locked on the installation part, corresponding to the centrifugal fan, of the cleaning cover, the structure installation efficiency is improved, operation is easy and convenient, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of clean hoods, in particular to a clean hood for a centrifugal fan. Background Art

[0002] A centrifugal fan is a driven fluid machine that relies on input mechanical energy to increase gas pressure and discharge the gas. Centrifugal fans are widely used for ventilation, dust removal, and cooling in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings; ventilation and air induction in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; grain drying and conveying; wind tunnel air sources; and hovercraft inflation and propulsion.

[0003] The air inlet of a centrifugal fan is generally an open structure. Therefore, when using the centrifugal fan, people generally install a mesh cover at the air inlet to prevent larger debris from being sucked into the inside of the centrifugal fan. However, the structure of the mesh cover used in existing centrifugal fans is roughly the same as that of ordinary electric fans. Therefore, the effect is not very ideal, and it does not have shock absorption and cleaning effects. At the same time, it is inconvenient to install and has poor reliability. Utility Model Content

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a clean cover for a centrifugal fan, which can effectively solve the problems raised by the background technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A clean cover for a centrifugal fan, comprising an inner ring frame and an outer ring frame, an air inlet duct being provided between the inner ring frame and the outer ring frame, and the outer ring frame being fixedly connected to the inner ring frame, the outer ring frame being provided with an air inlet portion, the air inlet portion being provided with a filter screen and a cleaning mechanism, the outer ring frame being further provided with a mounting mechanism for fixing the centrifugal fan, the inner ring frame shaft being provided with a mounting flange sleeve and a drive module, the drive module being fixed to the axis of the inner ring frame through the mounting flange sleeve, and a buffer structure being further provided at the connection between the mounting flange sleeve and the inner ring frame;

[0007] The cleaning mechanism includes a rotating ring and a plurality of dust removal scraping strips arranged on the rotating ring. The rotating ring is coaxially arranged with the inner ring frame and is connected to the driving module. The dust removal scraping strips are arranged around the rotating ring. The dust removal scraping strips are also provided with a cleaning end, which contacts the surface of the filter screen. The rotating ring rotates along the axis of the inner ring frame through the driving module.

[0008] As a further description of the above technical solution, the mounting mechanism is arranged around the edge of the outer ring frame, the diameter of the outer ring frame is larger than the diameter of the inner ring frame, wherein the filter screen is detachably mounted on the inner ring frame, and a sealing ring is also provided between the air inlet duct and the inner ring frame.

[0009] As a further description of the above technical solution, the mounting mechanism includes a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are integrally formed, the first mounting seat is fixed to the edge of the outer ring frame, and the first mounting seat is also provided with multiple screw holes, and the second mounting frame is provided with a quick locking structure.

[0010] As a further description of the above technical solution, the inner ring frame is provided with a mounting portion, which is provided with a magnetic layer, wherein the filter screen is in a circular shape, and the filter screen is made of iron, the filter screen is tightly fitted with the magnetic layer, and the end of the inner ring frame is also provided with a limiting slot for fixing the filter screen.

[0011] As a further description of the above technical solution, the quick locking structure includes a telescopic rod, a return spring and a lock tongue, wherein a movable groove is provided on the second mounting seat, the lock tongue is connected to the telescopic rod, the return spring is sleeved on the telescopic rod, and the lock tongue is arranged in the movable groove through the telescopic rod.

[0012] As a further description of the above technical solution, the drive module includes a brushless motor, a drive shaft and a gear part. The brushless motor is installed on the mounting flange sleeve, the drive shaft is connected to the gear part, the gear part is connected to the rotating frame, the gear part is provided with a driving gear, the rotating frame is provided with a connecting ring, and the connecting ring is provided with a driven gear.

[0013] As a further description of the above technical solution, the dust removal scraper is fixed on the rotating frame, and a movable bearing part is further provided at the connection between the rotating frame and the outer ring frame, wherein the cleaning end includes a brush.

[0014] As a further description of the above technical solution, the buffer structure includes a fixed ring and a number of shock-absorbing springs. The fixed ring is respectively connected to the inner ring frame and the mounting flange sleeve. The shock-absorbing springs are arranged between the inner ring frame and the mounting flange sleeve. The shock-absorbing springs are arranged in a circular array along the axis of the inner ring frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides a clean cover for a centrifugal fan, which has at least one of the following beneficial effects during use:

[0017] A rotating ring and a plurality of dust scraping strips fixed on the rotating ring are used, and the brushes provided on the dust scraping strips are in contact with the filter. The rotating frame is driven to rotate by the driving module on the inner ring frame. The rotating frame rotates clockwise or counterclockwise, so that the brush removes dust from the filter. This structure can maintain the air intake volume and the cleanliness of the air, and at the same time greatly improve the service life of the filter. It has a quick locking structure, which has four parts, which are respectively provided on the outer ring frame. The quick locking structure includes a first mounting seat and a second mounting seat. The first mounting seat is fixedly connected to the outer ring seat, and a retractable locking tongue is provided on the second mounting seat. During the installation process, the locking tongue is quickly locked on the mounting portion of the clean cover corresponding to the centrifugal fan, which improves the installation efficiency of the structure, is simple and convenient to operate, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a clean cover for a centrifugal fan according to the present invention;

[0019] Figure 2 This is a schematic diagram of the first side structure of a clean cover for a centrifugal fan according to the utility model;

[0020] Figure 3 This is a second side structural schematic diagram of a clean cover for a centrifugal fan according to the present invention;

[0021] Figure 4 This is a first perspective structural diagram of a clean cover for a centrifugal fan according to the present invention;

[0022] Figure 5 This is a second perspective structural schematic diagram of a clean cover for a centrifugal fan according to the present invention.

[0023] Numbers in the figure:

[0024] 1. Inner ring frame; 101. Mounting flange sleeve; 102. Drive module; 103. Buffer structure; 104. Air inlet duct; 105. Connecting ring; 106. Brushless motor; 107. Shock-absorbing spring; 108. Sealing ring; 2. Outer ring frame; 201. Movable bearing; 3. Cleaning mechanism; 301. Dust scraper; 302. Filter; 303. Rotating frame; 304. Fixed ring; 305. Brush; 4. Mounting mechanism; 401. First mounting seat; 402. Second mounting seat; 403. Quick locking structure; 404. Lock tongue. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1-5 As shown, the utility model provides a clean cover for a centrifugal fan, comprising an inner ring frame 1 and an outer ring frame 2, an air inlet 104 is provided between the inner ring frame 1 and the outer ring frame 2, and the outer ring frame 2 is fixedly connected to the inner ring frame 1, the outer ring frame 2 is provided with an air inlet portion, the air inlet portion is provided with a filter 302 and a cleaning mechanism 3, the outer ring frame 2 is also provided with a mounting mechanism 4 for fixing the centrifugal fan, the inner ring frame 1 shaft is provided with a mounting flange sleeve 101 and a drive module 102, the drive module 102 is fixed to the axis of the inner ring frame 1 through the mounting flange sleeve 101, and a buffer structure 103 is also provided at the connection between the mounting flange sleeve 101 and the inner ring frame 1.

[0027] This embodiment is used to be installed on a centrifugal fan, and is a clean cover that can keep the air clean during the air intake process of the centrifugal fan. The clean cover body is an outer ring frame 2 and an inner ring frame 1, wherein an air inlet duct 104 is formed between the outer ring frame 2 and the inner ring frame 1, and the outer ring frame 2 and the inner ring frame 1 are hollow structures, forming an air inlet portion on the external environment, wherein a filter 302 is provided between the air inlet portion and the air inlet duct 104, and the filter 302 isolates dust in the air, and a cleaning mechanism 3 for dust removal is provided on the air inlet portion. The cleaning mechanism 3 adopts a rotating ring and a plurality of dust removal scraping strips 301 fixed on the rotating ring, and a brush 305 provided on the dust removal scraping strip 301 contacts the filter 302. The rotating frame 303 is driven to rotate by the driving module 102 on the inner ring frame 1. The rotating frame 303 rotates clockwise or counterclockwise, so that the brush 305 removes dust on the filter 302. This structure can maintain the air intake volume and the cleanliness of the air, and at the same time greatly improve the service life of the filter 302.

[0028] The cleaning mechanism 3 includes a rotating ring and several dust removal scrapers 301 arranged on the rotating ring. The rotating ring is coaxially arranged with the inner ring frame 1, and the rotating ring is connected to the driving module 102. The dust removal scrapers 301 are arranged around the rotating ring. The dust removal scraper 301 is also provided with a cleaning end, which contacts the surface of the filter 302. The rotating ring rotates along the axis of the inner ring frame 1 through the driving module 102.

[0029] In this embodiment, the drive module 102 drives the rotating frame 303 to rotate. A movable bearing 201 is provided between the rotating frame 303 and the outer ring frame 2. The rotating frame 303 is connected to the drive module 102 by gear meshing. The drive module 102 is a brushless motor 106. At the same time, a buffer structure 103 is provided at the connection between the drive module 102 and the inner ring frame 1. This structure can significantly reduce noise generation and improve the rotation stability of the rotating frame 303. Its clean cover also has a quick locking structure 403. This structure has four, respectively provided on the outer ring frame 2. The quick locking structure 403 includes a first mounting seat 401 and a second mounting seat 402. The first mounting seat 401 is fixedly connected to the outer ring seat, and the second mounting seat 402 is provided with a retractable locking tongue 404. During installation, the locking tongue 404 is quickly locked on the mounting portion of the clean cover corresponding to the centrifugal fan, improving the structural installation efficiency, simple and convenient operation, and strong reliability.

[0030] It is further explained that the mounting mechanism 4 is arranged around the edge of the outer ring frame 2, the diameter of the outer ring frame 2 is larger than the diameter of the inner ring frame 1, wherein the filter screen 302 is detachably mounted on the inner ring frame 1, and a sealing ring 108 is also provided between the air inlet duct 104 and the inner ring frame 1.

[0031] It is further explained that the mounting mechanism 4 includes a first mounting seat 401 and a second mounting seat 402. The first mounting seat 401 and the second mounting seat 402 are integrally formed. The first mounting seat 401 is fixed to the edge of the outer ring frame 2. The first mounting seat 401 is also provided with a plurality of screw holes, and the second mounting frame is provided with a quick locking structure 403.

[0032] It is further explained that the inner ring frame 1 is provided with a mounting portion, which is provided with a magnetic layer, wherein the filter screen 302 is in a circular shape, and the filter screen 302 is made of iron, the filter screen 302 fits tightly with the magnetic layer, and the end of the inner ring frame 1 is also provided with a limiting slot for fixing the filter screen 302.

[0033] It is further explained that the quick locking structure 403 includes a telescopic rod, a return spring and a lock tongue 404, wherein a movable groove is provided on the second mounting seat 402, the lock tongue 404 is connected to the telescopic rod, the return spring is sleeved on the telescopic rod, and the lock tongue 404 is arranged in the movable groove in a floating up and down manner through the telescopic rod.

[0034] It is further explained that the driving module 102 includes a brushless motor 106, a driving shaft and a gear part. The brushless motor 106 is installed on the mounting flange sleeve 101. The driving shaft is connected to the gear part, and the gear part is connected to the rotating frame 303. The gear part is provided with a driving gear, and the rotating frame 303 is provided with a connecting ring 105. The connecting ring 105 is provided with a driven gear.

[0035] It is further explained that the dust removal scraper 301 is fixed on the rotating frame 303, and a movable bearing part 201 is further provided at the connection between the rotating frame 303 and the outer ring frame 2, wherein the cleaning end includes a brush 305.

[0036] It is further explained that the buffer structure 103 includes a fixed ring 304 and a plurality of shock-absorbing springs 107. The fixed ring 304 is respectively connected to the inner ring frame 1 and the mounting flange sleeve 101. The shock-absorbing springs 107 are arranged between the inner ring frame 1 and the mounting flange sleeve 101. The shock-absorbing springs 107 are arrayed along the axial circumference of the inner ring frame 1.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A clean hood for a centrifugal fan, characterized in that: It includes an inner ring frame and an outer ring frame, an air inlet duct is provided between the inner ring frame and the outer ring frame, and the outer ring frame is fixedly connected to the inner ring frame, the outer ring frame is provided with an air inlet portion, the air inlet portion is provided with a filter and a cleaning mechanism, the outer ring frame is also provided with a mounting mechanism for fixing a centrifugal fan, the inner ring frame shaft is provided with a mounting flange sleeve and a drive module, the drive module is fixed to the axis of the inner ring frame through the mounting flange sleeve, and a buffer structure is also provided at the connection between the mounting flange sleeve and the inner ring frame; The cleaning mechanism includes a rotating ring and a plurality of dust removal scraping strips arranged on the rotating ring. The rotating ring is coaxially arranged with the inner ring frame and is connected to the driving module. The dust removal scraping strips are arranged around the rotating ring. The dust removal scraping strips are also provided with a cleaning end, which contacts the surface of the filter screen. The rotating ring rotates along the axis of the inner ring frame through the driving module.

2. A clean cover for a centrifugal fan according to claim 1, characterized in that: The mounting mechanism is arranged around the edge of the outer ring frame, the diameter of the outer ring frame is larger than the diameter of the inner ring frame, wherein the filter screen is detachably mounted on the inner ring frame, and a sealing ring is further provided between the air inlet duct and the inner ring frame.

3. A clean cover for a centrifugal fan according to claim 1 or 2, characterized in that: The mounting mechanism includes a first mounting seat and a second mounting seat. The first mounting seat and the second mounting seat are integrally formed. The first mounting seat is fixed to the edge of the outer ring frame. The first mounting seat is also provided with multiple screw holes, and the second mounting seat is provided with a quick locking structure.

4. A clean cover for a centrifugal fan according to claim 1 or 2, characterized in that: The inner ring frame is provided with a mounting portion, which is provided with a magnetic layer, wherein the filter screen is in a circular shape and is made of iron. The filter screen fits tightly with the magnetic layer, and the end of the inner ring frame is also provided with a limiting slot for fixing the filter screen.

5. The clean cover for a centrifugal fan according to claim 3, characterized in that: The quick locking structure includes a telescopic rod, a reset spring and a lock tongue, wherein the second mounting seat is provided with a movable groove, the lock tongue is connected to the telescopic rod, the reset spring is sleeved on the telescopic rod, and the lock tongue is arranged in the movable groove through the telescopic rod.

6. The clean cover for a centrifugal fan according to claim 1, characterized in that: The driving module includes a brushless motor, a driving shaft and a gear part. The brushless motor is installed on the mounting flange sleeve. The driving shaft is connected to the gear part. The gear part is connected to the rotating frame. The gear part is provided with a driving gear. The rotating frame is provided with a connecting collar. The connecting collar is provided with a driven gear.

7. The clean cover for a centrifugal fan according to claim 1, characterized in that: The dust removal scraper strip is fixedly arranged on the rotating frame, and a movable bearing part is further arranged at the connection between the rotating frame and the outer ring frame, wherein the cleaning end includes a brush.

8. The clean cover for a centrifugal fan according to claim 1, characterized in that: The buffer structure includes a fixed ring and a plurality of shock-absorbing springs. The fixed ring is connected to the inner ring frame and the mounting flange sleeve respectively. The shock-absorbing springs are arranged between the inner ring frame and the mounting flange sleeve. The shock-absorbing springs are arranged in an array along the axis of the inner ring frame.

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