Fan with filtering device

Abstract

The utility model discloses a fan with a filter device, which relates to the technical field of fans and comprises a shell, first mounting plates are fixedly connected to the upper end and the lower end of the rear side in the shell, first L-shaped plates are fixedly connected to the rear ends of the inner sides of the two first mounting plates, and U-shaped grooves are fixedly connected to the middles of the inner sides of the two first mounting plates. Second L-shaped plates are fixedly connected to the front ends of the inner sides of the two first mounting plates, primary filter screens are slidably connected between the first L-shaped plates and the rear side of the U-shaped groove, composite filter plates are slidably connected between the second L-shaped plates and the front side of the U-shaped groove, and second mounting plates are fixedly connected to the upper end and the lower end of the front side in the shell. Mounting frames are fixedly connected to the left side and the right side between the two second mounting plates, mounting supports are transversely and fixedly connected to the interiors of the two mounting frames, and centrifugal fans are fixedly connected to the rear sides of the two mounting supports through screws. The fan has the advantages that air entering the shell is filtered, and impurities and dust are effectively prevented from entering the fan.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan with a filtering device. 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] In the prior art, centrifugal fans do not have a filtering function, so that the centrifugal fans only serve to transport gas. When the fan is used in an environment with relatively poor conditions, impurities and dust in the environment will enter the inside of the fan. Some gases containing large particles of dust entering the centrifugal fan are likely to cause damage to the interior of the centrifugal fan. In response to the above problems, a fan with a filtering device is proposed to solve the problem. Utility Model Content

[0004] In order to solve the above technical problems, a fan with a filtering device is provided, which solves the problem that in the current existing technology, centrifugal fans do not have a filtering function, so that the centrifugal fans only play the role of conveying gas. When the fan is used in an environment with relatively poor conditions, impurities and dust in the environment will enter the inside of the fan, and some gases containing large particles of dust entering the centrifugal fan can easily cause damage to the interior of the centrifugal fan.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a fan with a filtering device, comprising a shell, wherein the upper and lower ends of the rear side of the interior of the shell are fixedly connected to a first mounting plate, the rear ends of the inner sides of the two first mounting plates are fixedly connected to a first L-shaped plate, the middle parts of the inner sides of the two first mounting plates are fixedly connected to a U-shaped groove, the front ends of the inner sides of the two first mounting plates are fixedly connected to a second L-shaped plate, a primary filter screen is slidably connected between the first L-shaped plate and the rear side of the U-shaped groove, a composite filter plate is slidably connected between the second L-shaped plate and the front side of the U-shaped groove, the upper and lower ends of the front side of the interior of the shell are fixedly connected to the second mounting plate, the left and right sides between the two second mounting plates are fixedly connected to a mounting frame, the two mounting frames are laterally fixedly connected to mounting brackets, and the rear sides of the two mounting brackets are fixedly connected to the centrifugal fans by screws.

[0006] Preferably, the inside of the shell and the outsides of the two installation frames are fixedly connected with installation boxes, the insides of the two installation boxes are fixedly installed with electric control boxes, and the front side of the shell and the left installation box position are fixedly connected with a cable waterproof connector.

[0007] Preferably, a door panel is rotatably connected to the left side of the shell through a hinge, the door panel is fixedly connected to the shell through a locking screw, and the locking screw is threadedly connected to the left side panel of the shell.

[0008] Preferably, the left and right ends of the front and rear side plates of the shell are fixedly connected with lifting ears for lifting.

[0009] Preferably, a second connecting flange is fixedly connected to a side of the housing close to the primary filter, and a first connecting flange is fixedly connected to a side of the housing close to the centrifugal fan.

[0010] Preferably, the composite filter plate is composed of a fiber mesh, an activated carbon layer, a polyurethane support layer and a polyester cloth surface layer.

[0011] Preferably, the centrifugal fan is electrically connected to the electric control box via a wire.

[0012] Compared with the prior art, the advantages of the present invention are: the present invention sets a primary filter screen and a composite filter plate as a filtering structure, sets two centrifugal fans as a power structure, and has a combination of a power structure and a filtering structure, which solves the problem of too low pressure and insufficient pressure at the end of some air circulation systems, and is also suitable for renovation projects with insufficient system pressure. In addition, the present invention can filter the air entering the shell, effectively prevent impurities and dust from entering the fan, reduce the wear of fan components, and thus extend the service life of the fan. By reducing the accumulation of dust and impurities inside the fan, the cleaning and maintenance requirements of the fan can be reduced, and the maintenance frequency and related costs can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a structural diagram of the utility model from another perspective;

[0015] Figure 3 This is a schematic diagram of the door panel in the present invention in an open state;

[0016] Figure 4 This is a schematic diagram of the internal structure of the housing in the present utility model;

[0017] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0018] Figure 6 This is a schematic diagram of the connection between the installation frame and the centrifugal fan in the utility model.

[0019] Description of reference numerals:

[0020] 1. Housing; 2. Door panel; 3. Lifting ear; 4. First connecting flange; 5. First L-shaped plate; 6. U-shaped groove; 7. Second L-shaped plate; 8. Primary filter; 9. Composite filter plate; 10. Mounting frame; 11. Mounting bracket; 12. Centrifugal fan; 13. Mounting box; 14. Electrical control box; 15. Cable waterproof connector; 16. Locking screw; 17. First mounting plate; 18. Second mounting plate; 19. Second connecting flange. DETAILED DESCRIPTION

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0022] Reference Figure 1-6 As shown, a fan with a filtering device includes a shell 1, and the upper and lower ends of the rear side of the interior of the shell 1 are fixedly connected to a first mounting plate 17, the rear ends of the inner sides of the two first mounting plates 17 are fixedly connected to a first L-shaped plate 5, the middle parts of the inner sides of the two first mounting plates 17 are fixedly connected to a U-shaped groove 6, and the front ends of the inner sides of the two first mounting plates 17 are fixedly connected to a second L-shaped plate 7, a primary filter screen 8 is slidably connected between the first L-shaped plate 5 and the rear side of the U-shaped groove 6, and a composite filter plate 9 is slidably connected between the second L-shaped plate 7 and the front side of the U-shaped groove 6. The sliding connection method simplifies the installation and replacement process of the filter element, and it can be completed quickly without complicated tools or operations. The upper and lower ends of the front side of the interior of the shell 1 are fixedly connected to a second mounting plate 18, and the left and right sides between the two second mounting plates 18 are fixedly connected to a mounting frame 10, and the two mounting frames 10 are laterally fixedly connected to the inside of the two mounting frames, and the rear sides of the two mounting brackets 11 are fixedly connected to the centrifugal fan 12 by screws.

[0023] Specifically, the inside of the shell 1 and the outside of the two mounting frames 10 are fixedly connected with mounting boxes 13, the inside of the two mounting boxes 13 are fixedly installed with electric control boxes 14, and the front side of the shell 1 and the position of the left mounting box 13 are fixedly connected with a cable waterproof connector 15. The cable waterproof connector 15 ensures the safety and reliability of the electrical connection in humid or harsh environments, and prevents shutdowns or safety accidents caused by electrical failures.

[0024] Furthermore, a door panel 2 is hingedly connected to the left side of the housing 1. This panel is fixedly connected to the housing 1 via a locking screw 16, which is threadedly connected to the left side panel of the housing 1. The hinged connection between the door panel 2 and the housing 1 facilitates opening and closing. The locking screw 16 also provides a reliable locking mechanism, ensuring that the door panel 2 fits tightly against the housing 1 when closed, preventing air leakage or the ingress of foreign matter. This design not only ensures the sealing of the device but also facilitates maintenance and replacement of internal components.

[0025] Preferably, the left and right ends of the front and rear side panels of the shell 1 are fixedly connected with lifting ears 3 for lifting. The design of the lifting ears 3 makes the entire equipment more convenient and safer during the lifting and installation process, and the design of the lifting ears 3 can also facilitate the fixing of the utility model to the wall or ceiling, making the installation of the device more convenient.

[0026] Furthermore, a second connecting flange 19 is fixedly connected to the side of the shell 1 close to the primary filter 8, and a first connecting flange 4 is fixedly connected to the side of the shell 1 close to the centrifugal fan 12. The design of the second connecting flange 19 and the first connecting flange 4 enables the fan to be easily connected to other piping systems, thereby realizing rapid integration and flexible configuration of the system. The standardized connection method improves the versatility and interchangeability of the equipment and reduces the cost of installation and replacement.

[0027] It's worth noting that the composite filter plate 9 is composed of a fiber mesh, an activated carbon layer, a polyurethane support layer, and a polyester fabric cover layer. This combination offers multiple filtering effects: the fiber mesh initially intercepts large particles, the activated carbon layer effectively removes odors and harmful gases, the polyurethane support layer provides structural strength, and the polyester fabric cover layer enhances durability and filtration accuracy. This composite structure significantly improves air purification effectiveness and ensures the cleanliness of the output air.

[0028] Specifically, the centrifugal fan 12 is electrically connected to the electric control box 14 via a wire. The integrated design of the electric control box 14 makes the electrical control more centralized and convenient, and is easy to operate and maintain.

[0029] Working principle: When the device is in use, it is first connected to the external air inlet duct through the second connecting flange 19, and connected to the external air outlet duct through the first connecting flange 4. Then the centrifugal fan 12 is started to generate negative pressure in the air inlet duct, and the air containing impurities is drawn in by the negative pressure. The air containing impurities first passes through the primary filter 8 to intercept impurities with larger particles, and then the air passes through the composite filter plate 9 to remove odor and impurities with smaller particles. The purified air is discharged through the external air outlet duct under the adsorption of the centrifugal fan 12. When the primary filter 8 and the composite filter plate 9 need to be replaced, it is necessary to first unscrew the locking screw 16, open the door panel 2 along the hinge, pull out the primary filter 8 and the composite filter plate 9, replace them, and close the door panel 2.

[0030] In addition, the fan with filtering device can also be used as a filtering unit of an air circulation system after adaptive modification.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan with a filtering device, characterized in that: The invention comprises a shell (1), wherein the upper and lower ends of the rear side of the shell (1) are fixedly connected to a first mounting plate (17), the rear ends of the inner sides of the two first mounting plates (17) are fixedly connected to a first L-shaped plate (5), the middle parts of the inner sides of the two first mounting plates (17) are fixedly connected to a U-shaped groove (6), the front ends of the inner sides of the two first mounting plates (17) are fixedly connected to a second L-shaped plate (7), a primary filter screen (8) is slidably connected between the first L-shaped plate (5) and the rear side of the U-shaped groove (6), a composite filter plate (9) is slidably connected between the second L-shaped plate (7) and the front side of the U-shaped groove (6), the upper and lower ends of the front side of the inner side of the shell (1) are fixedly connected to a second mounting plate (18), the left and right sides between the two second mounting plates (18) are fixedly connected to a mounting frame (10), the interiors of the two mounting frames (10) are transversely fixedly connected to a mounting bracket (11), and the rear sides of the two mounting brackets (11) are fixedly connected to a centrifugal fan (12) by screws.

2. A fan with a filter device according to claim 1, characterized in that: The interior of the housing (1) and the exteriors of the two installation frames (10) are fixedly connected with installation boxes (13), the interiors of the two installation boxes (13) are fixedly installed with electric control boxes (14), and the front side of the housing (1) is fixedly connected with the position of the left installation box (13) with a cable waterproof connector (15).

3. The fan with a filter device according to claim 1, characterized in that: The left side of the housing (1) is rotatably connected to a door panel (2) via a hinge, the door panel (2) is fixedly connected to the housing (1) via a locking screw (16), and the locking screw (16) is threadedly connected to the left side panel of the housing (1).

4. The fan with a filter device according to claim 1, characterized in that: Lifting ears (3) for lifting are fixedly connected to both left and right ends of the front and rear side plates of the housing (1).

5. The fan with a filter device according to claim 1, characterized in that: A second connecting flange (19) is fixedly connected to the side of the housing (1) close to the primary filter (8), and a first connecting flange (4) is fixedly connected to the side of the housing (1) close to the centrifugal fan (12).

6. The fan with a filter device according to claim 1, characterized in that: The composite filter plate (9) is composed of a fiber mesh, an activated carbon layer, a polyurethane support layer and a polyester cloth surface layer.

7. The fan with a filter device according to claim 1, characterized in that: The centrifugal fan (12) is electrically connected to the electric control box (14) via a wire.

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