Filtering device, air inlet chamber and air supply system

Abstract

The application provides a filtering device, an air inlet chamber and an air supply system, and relates to the technical field of fan equipment. The filtering device is used for a magnetic suspension fan air inlet chamber and comprises a frame. The frame is arranged on the inlet wall of the air inlet chamber. The frame is sequentially provided with a mesh plate, a first filtering layer, a second filtering layer and a third filtering layer from outside to inside. The first filtering layer is a module assembly structure, the second filtering layer is a sheet structure, and the third filtering layer is a flat plate structure.

Description

Technical Field

[0001] This utility model relates to the field of fan equipment technology, and in particular to a filtration device, an exhaust chamber, and an air supply system. Background Technology

[0002] Magnetic levitation fans (also known as magnetic levitation blowers) are devices that utilize "magnetic levitation bearings + high-speed permanent magnet motors + centrifugal impellers + closed-loop control" to achieve contactless, lubrication-free, and high-efficiency air blowing. Through the principle of "first levitation, then rotation," electromagnetic force replaces lubricating oil and gears to achieve high-efficiency, low-noise, and maintenance-free continuous air blowing. They have been widely used in sewage treatment, cement, food, power plant desulfurization, and other applications.

[0003] When a magnetic levitation blower is operating, the rotor is suspended in the center by electromagnetism. To prevent dust accumulation that could cause rotor eccentricity or enter critical components such as the magnetic bearings, a filtration device such as filter cotton is required in the blower's air intake chamber to ensure equipment lifespan and process cleanliness. These air filters need to be replaced frequently depending on the local dust content. Failure to replace them in time will cause filter clogging. Severe clogging will lead to excessive pressure difference between the inside and outside of the casing, causing motor overheating, reduced blower efficiency, surge, and other adverse phenomena. Patent CN215109717U discloses an air intake filtration system for a magnetic levitation blower, which uses a roller to replace new and old filter cotton. However, in areas with high levels of dust, the filter cotton has a short lifespan and requires frequent replacement. Furthermore, for high-power magnetic levitation blowers, the air intake chamber is large, resulting in large filter elements, high costs, and complex equipment structures. Especially after all the filter cotton is used up, the entire system needs to be replaced, which is a complex process and increases the labor costs for equipment maintenance. Utility Model Content

[0004] The main objective of this application is to provide a filtration device, an air intake chamber, and an air supply system to at least solve the aforementioned problems.

[0005] To achieve the above objectives, this application provides the following technical solution: In a first aspect, this application provides a filtration device for the air intake chamber of a magnetic levitation fan. The filtration device includes a frame for installation on the inlet wall of the air intake chamber. The frame is provided with a mesh plate, a first filter layer, a second filter layer, and a third filter layer from the outside to the inside. The first filter layer is a modular assembly structure, the second filter layer is a sheet-like structure, and the third filter layer is a flat plate structure.

[0006] In the embodiments of this application, the frame is a rectangular structure. With the inlet and outlet directions of the air intake chamber as a reference, the inward side of the frame has a grid structure. The third filter layer includes multiple filter units, and each filter unit is embedded in a grid of the frame.

[0007] In embodiments of this application, the filtering device further includes a dust collection bin, the bottom of the frame has a dust collection area enclosed on three sides, the dust collection bin is slidably disposed in the dust collection area of ​​the frame, and can be pushed and pulled in the horizontal direction.

[0008] In the embodiments of this application, the filtration device further includes a support plate, a boss is provided at the bottom of the frame, the boss is located above the dust collection area, the support plate is connected to the boss and is located above the dust collection bin, and the mesh plate, the first filter layer and the second filter layer are respectively disposed on the support plate; wherein, the support plate is provided with a plurality of dust passage holes.

[0009] In an embodiment of this application, the top inner wall of the frame is provided with a groove, the bottom of the frame is provided with an elastic clip, the top of the mesh plate is embedded in the groove, and the bottom of the mesh plate is located between the elastic clip and the first filter layer.

[0010] In the embodiments of this application, the first filter layer includes a plurality of filter modules, the edges of which are attached to each other; wherein, the filter module includes a frame and corrugated filter cotton embedded in the frame.

[0011] In the embodiments of this application, the filtering device further includes multiple limiting rods, and multiple hook portions are provided on both sides of the outward-facing surface of the frame, with each end of the limiting rod being respectively engaged with one of the hook portions.

[0012] In embodiments of this application, the second filter layer is made of paper filter cotton, and / or the third filter layer is made of synthetic fiber or polyester fiber; and / or the mesh is made of 20-40 mesh metal woven mesh.

[0013] A third aspect of this application also provides an exhaust chamber, the exhaust chamber including the above-described filtration device, the filtration device being disposed at the inlet of the exhaust chamber.

[0014] A third aspect of this application also provides an air supply system, the air supply system including a magnetic levitation fan and the aforementioned air intake chamber, the air intake chamber being located at the air inlet end of the magnetic levitation fan.

[0015] Compared to existing technologies, the filtration device provided in this application has a three-layer filtration function. It captures flocculent and filamentous materials through a mesh plate. The first filter layer on the outside has a modular assembly structure, which is easy to disassemble and clean. It also uses water-washable filter cotton as the filter material. Compared with existing technologies, it greatly reduces the problem of disassembling and cleaning the filter element. Furthermore, the second and third filter layers further improve the filtration effect, forming a multi-stage filtration structure. This avoids excessive pressure difference between the inside and outside of the casing, which can cause problems such as motor overheating, reduced fan operating efficiency, and surge.

[0016] The air intake chamber provided in the second aspect of this application and the air supply system provided in the third aspect have the same or similar technical effects as the filtration device provided in the first aspect of this application.

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein: Figure 1 This is a schematic diagram of an exemplary filtration device; Figure 2 This is an exploded schematic diagram of an exemplary filtration device; Figure 3 This is an exemplary structural diagram of the third filter layer, support plate, and dust collection bin; Figure 4 This is an exemplary exploded view of the third filter layer; Figure 5 This is an example exploded structural diagram of the frame, support plate, and dust collection bin; Figure 6 This is a schematic diagram of an exemplary frame, support plate, and dust collection bin; Figure 7 yes Figure 6 Enlarged view of point A in the middle; Figure 8 This is an exemplary framework, a first-view structural diagram of the dust collection bin; Figure 9 yes Figure 8 Enlarged view of point B in the middle; Figure 10 This is a cross-sectional view of an exemplary flexible card; Figure 11 This is a schematic diagram of an exemplary stencil. Figure 12 This is a schematic diagram of the structure of an exemplary first filter layer; Figure 13 yes Figure 12 The cross-sectional view at point C, which is the cross-sectional view of the joint between the two filter modules; Figure 14 This is an exemplary structural diagram showing the first filter layer placed within the frame; Figure 15 This is an exemplary framework, a second-view structural diagram of the dust collection bin.

[0019] Explanation of icon numbers: 100. Frame; 101. Grid structure; 102. Boss; 103. Connecting plate; 104. Groove; 105. Elastic clip; 106. Cylindrical head; 107. Hook; 108. Limiting rod; 200, Mesh plate; 300, First filter layer; 301, Filter module; 302, Arc-shaped recess; 400, Second filter layer; 500, Third filter layer; 501, Filter unit; 600, Dust collection bin; 700, Support plate. Detailed Implementation

[0020] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0021] It should be noted that, unless otherwise stated, the technical or scientific terms used in this utility model shall have the ordinary meaning as understood by those skilled in the art to which this utility model pertains.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Magnetic levitation fans are currently mostly integrated cabinet structures. For high-power magnetic levitation fans (or blowers), the air intake chamber can be a corridor-type structure or integrated into the building wall. For these high-power magnetic levitation fans, the filtration structure of the air intake chamber is complex, the filter element is large, the replacement process is complicated and inconvenient, and the filter element cost is high. However, if the local air dust content is high and the filter element is not replaced in time, it will cause filter blockage, which can lead to problems such as large pressure difference between the inside and outside of the casing, motor overheating, and affecting fan operation.

[0024] To address the problems existing in current technologies, such as Figures 1 to 2 As shown, an embodiment of this application provides a filtration device for use in the air intake chamber of a magnetic levitation fan. The filtration device includes a frame 100, which is installed on the entrance wall of the air intake chamber. The frame 100 is provided with a mesh plate 200, a first filter layer 300, a second filter layer 400, and a third filter layer 500 from the outside to the inside. The first filter layer 300 is a modular assembly structure, the second filter layer 400 is a sheet structure, and the third filter layer 500 is a flat plate structure.

[0025] The filtration device provided in the embodiments of this application achieves a three-layer filtration function through a first filter layer 300, a second filter layer 400, and a third filter layer 500. It captures flocculent and filamentous materials through a mesh plate 200. The first filter layer 300, located on the outer side, has a modular assembly structure, which is easy to disassemble and clean. The second filter layer 400 and the third filter layer 500 further improve the filtration effect, forming a multi-stage filtration structure. This can avoid excessive pressure difference between the inside and outside of the casing, which can cause problems such as motor overheating, reduced fan operating efficiency, and surge.

[0026] like Figures 3 to 10 As shown in the embodiments of this application, the frame 100 is a rectangular structure. With the inlet and outlet directions of the air intake chamber as a reference, the inner side of the frame 100 has a grid structure 101. The third filter layer 500 includes a plurality of filter units 501, each filter unit 501 being embedded in a grid of the frame 100.

[0027] During installation, the top and side walls of the frame 100 can be fixed to the inner wall of the air inlet of the induced draft chamber with bolts, and are easy to disassemble. The frame 100 can be made of metal frame, preferably aluminum alloy, as aluminum alloy is rust-proof, corrosion-resistant, and lightweight when cleaning is required.

[0028] The grid structure 101 is used to fix the filter units 501 of the third filter layer 500. The filter units 501 are rectangular and embedded in each grid. The thickness of the grid structure 101 is less than the thickness of the frame 100.

[0029] like Figure 8 As shown in the embodiments of this application, the filtering device further includes a dust collection bin 600. The bottom of the frame 100 has a dust collection area enclosed on three sides. The dust collection bin 600 is slidably disposed in the dust collection area of ​​the frame 100 and can be pushed and pulled in the horizontal direction. Along the pushing and pulling direction, the outer side of the dust collection bin 600 has a handle for easy operation. The bottom of the dust collection bin 600 may be provided with pulleys (not shown in the figure) for easy pushing and pulling. The dust collection bin 600 is used to collect dust and debris that falls from the upper first filter layer 300, second filter layer 400, and third filter layer 500.

[0030] like Figures 6 to 7 As shown in the embodiments of this application, the filtration device further includes a support plate 700. A boss 102 is provided at the bottom of the frame 100, located above the dust collection area. The support plate 700 is connected to the boss 102 and located above the dust collection chamber 600. The mesh plate 200, the first filter layer 300, and the second filter layer 400 are respectively disposed on the support plate 700. The support plate 700 has multiple dust passage holes. The dust passage holes are strip-shaped and distributed in a rectangular array.

[0031] Specifically, the frame 100 includes a top plate and a pair of side plates connected to both sides of the top plate. A connecting plate 103 connects the bottom of the pair of side plates. Each side plate has a boss 102 at its bottom, which is flush with the connecting plate 103 along its height. The connecting plate 103 and the bosses 102 of the pair of side plates enclose a dust collection area. Support plates 700 are respectively attached to the top surfaces of the bosses 102 and the connecting plates 103, and are connected to the bosses 102 by screws. The dust collection chamber 600 is a box-shaped structure with an open top. When the dust collection chamber 600 is pushed, the inner side of the dust collection chamber 600 moves closer to the connecting plate 103 until it makes contact, thus closing the dust collection chamber 600. At this time, the top opening of the dust collection chamber 600 is located below the support plate 700. When the dust collection chamber 600 is pulled, the inner side of the dust collection chamber 600 gradually moves away from the connecting plate 103, and the top opening of the dust collection chamber 600 is exposed outside the support plate 700, or even completely separated from the frame 100, so as to facilitate the cleaning of dust. At this time, the dust collection chamber 600 is in the open state.

[0032] The mesh structure 101 is located between the top plate, side plate and support plate 700 of the frame 100, and is located on the closed side of the dust collection bin 600. The mesh structure 101 has multiple rectangular mounting holes, and the filter unit 501 of each third filter layer 500 is embedded in one mounting hole.

[0033] like Figures 8 to 10 , Figure 15 As shown in the embodiment of this application, the top inner wall of the frame 100, i.e. the top plate, is provided with a groove 104, the bottom boss 102 of the frame 100 is provided with an elastic clip 105, the top of the mesh plate 200 is embedded in the groove 104, and the bottom of the mesh plate 200 is located between the elastic clip 105 and the first filter layer 300.

[0034] like Figure 9 , Figure 10As shown, the boss 102 has a mounting groove. The elastic clip 105 includes a cylindrical head 106 and a spring connected to the cylindrical head 106. The spring is disposed in the mounting groove. One end of the cylindrical head 106 is slidably engaged in the mounting groove, and the other end of the cylindrical head 106 extends out of the mounting groove and protrudes from the boss 102. The support plate 700 has a through hole through which the cylindrical head 106 protrudes to the outside. When installing the mesh plate 200, the top is first placed in the groove 104, and then the bottom is pressed over the cylindrical head 106 to keep it vertical. At this time, the cylindrical head 106 is not compressed and automatically pops out due to the restoring force of the spring, so as to engage the mesh plate 200 between the cylindrical head 106 and the first filter layer 300.

[0035] like Figure 11 As shown in the embodiments of this application, the mesh panel 200 is made of 20-40 mesh metal woven mesh and is used to intercept and capture fibrous materials, filamentous materials, etc. The mesh panel 200 adopts a quick-installation structure for easy assembly and disassembly.

[0036] like Figure 12 , Figure 13 As shown in the embodiments of this application, the first filter layer 300 includes a plurality of filter modules 301, the edges of the plurality of filter modules 301 being attached to each other; wherein, the filter module 301 includes a frame and corrugated filter cotton embedded in the frame.

[0037] Specifically, the frames of multiple filter modules 301 are fitted together to form a rectangular structure. The filter cotton, made of polyester fiber, is corrugated and embedded within the frame. The thickness of the first filter layer 300 is 5-30 cm. The first filter layer 300 uses polyester fiber filter cotton, which is washable and reusable. Adjacent filter modules 301 are connected by a snap-fit ​​structure, for example... Figure 13 As shown, the first filter module 301 has an arc-shaped recess 302 on the outer side of its frame, and the second filter module 301 has an elastic telescopic component corresponding to the arc-shaped recess in its frame. This elastic telescopic component has the same structure as the elastic clip 105, and will not be described in detail. The elastic telescopic component, in conjunction with the arc-shaped recess 302, increases the friction between adjacent filter modules 301 and provides a limiting effect. This structure can also be installed between the frame 100 and the filter modules 301. The frame of the filter module 301 may also be provided with a handle (not shown in the attached diagram) for assisting in assembly and disassembly.

[0038] The embodiments of this application employ multiple filter modules 301 bonded together to form the first filter layer 300. This allows for easy disassembly and also enables individual disassembly, cleaning, or replacement of spare filter modules 301, allowing for localized operation and reducing downtime for the magnetic levitation fan.

[0039] In the embodiments of this application, the second filter layer 400 is made of paper filter cotton and is used to further enhance the filtration effect after the first filter layer 300. The second filter layer 400 can be fixed to the third filter layer 500 by bolts or nails. The third filter layer 500 is made of synthetic fiber or polyester fiber and has a thickness of 5-20mm. It is used to further enhance the filtration effect and, given the first filter layer 300 and the second filter layer 400, can reduce the degree of clogging of the third filter layer 500.

[0040] like Figure 14 As shown in the embodiments of this application, the filtering device further includes a plurality of limiting rods 108, and a plurality of hook portions 107 are provided on both sides of the outward-facing surface of the frame 100, with each end of the limiting rod 108 being respectively engaged with a hook portion 107.

[0041] Specifically, the hook portion 107 has an upward-facing slot, and the limiting rod 108 can be placed in the slot to limit the tilting of the mesh plate 200 or the first filter layer 300.

[0042] The filtration device provided in this application embodiment initially filters impurities such as flocculent matter through the mesh plate 200, filters impurities such as sand and dust through the first filter layer 300, and is easy to disassemble and wash, making it convenient for cleaning and replacement. The second filter layer 400 uses paper filter cotton, which has a higher filtration level and extends the replacement cycle based on the filtration effect of the first filter layer 300. The third filter layer 500 further filters based on the first filter layer 300 and the second filter layer 400, thereby improving the filtration effect.

[0043] The filter device provided in this application embodiment is used and disassembled as follows: When disassembly is required, first remove the limiting rod 108, move the bottom of the mesh plate 200 so that it presses against the elastic clip 105 and tilts, then move the top of the mesh plate 200 out of the groove 104 to complete disassembly. After cleaning, it is ready for installation. Disassemble the filter modules 301 separately. Disassemble the filter modules 301 that need to be cleaned. The spare modules can be directly replaced. The disassembled filter modules 301 can be cleaned and dried for later use. The second filter layer 400 can be directly disassembled and replaced. The filter unit 501 of the third filter layer 500 can also be replaced by disassembly. The dust collection chamber 600 can collect scattered dust and impurities. The dust collection chamber 600 can be cleaned by pulling out the dust collection chamber 600.

[0044] An embodiment of this application also provides an exhaust chamber, which includes the aforementioned filter device, disposed at the inlet of the exhaust chamber. The filter device can be fixed to the inner wall of the inlet of the exhaust chamber, so that the air introduced into the exhaust chamber enters the exhaust chamber through the filter device.

[0045] An embodiment of this application also provides an air supply system, which includes a magnetic levitation fan and the aforementioned air intake chamber, the air intake chamber being located at the air inlet end of the magnetic levitation fan.

[0046] It is understood that the relevant features in the above-described devices can be referenced interchangeably. Furthermore, the terms "first," "second," etc., in the above embodiments are used to distinguish between embodiments and do not represent the superiority or inferiority of any particular embodiment.

[0047] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A filtration device for use in the exhaust chamber of a magnetic levitation fan, characterized in that, The filtration device includes a frame for mounting on the inlet wall of the air intake chamber; wherein, The frame is provided with a mesh plate, a first filter layer, a second filter layer and a third filter layer from the outside to the inside; the first filter layer is a modular assembly structure, the second filter layer is a sheet structure and the third filter layer is a flat plate structure.

2. The filtration device according to claim 1, characterized in that, The frame is a rectangular structure. With the inlet and outlet directions of the air intake chamber as a reference, the inward side of the frame has a grid structure. The third filter layer includes multiple filter units, each of which is embedded in a grid of the frame.

3. The filtration device according to claim 2, characterized in that, It also includes a dust collection bin, the bottom of the frame has a dust collection area enclosed on three sides, the dust collection bin is slidably disposed in the dust collection area of ​​the frame, and can be pushed and pulled in the horizontal direction.

4. The filtration device according to claim 3, characterized in that, It also includes a support plate, and the bottom of the frame is provided with a boss, the boss being located above the dust collection area. The support plate is connected to the boss and located above the dust collection bin. The mesh plate, the first filter layer, and the second filter layer are respectively disposed on the support plate; wherein... The support plate is provided with multiple dust passage holes.

5. The filtration device according to claim 4, characterized in that, The top inner wall of the frame is provided with a groove, and the bottom of the frame is provided with an elastic clip. The top of the mesh plate is embedded in the groove, and the bottom of the mesh plate is located between the elastic clip and the first filter layer.

6. The filtration device according to claim 4, characterized in that, The first filter layer includes multiple filter modules, with the edges of the multiple filter modules fitting together; wherein, each filter module includes a frame and corrugated washable filter cotton embedded in the frame.

7. The filtration device according to claim 1, characterized in that, It also includes multiple limiting rods, and multiple hook portions are provided on both sides of the outward-facing surface of the frame, with each end of the limiting rod being respectively engaged with one of the hook portions.

8. The filtration device according to claim 1 or 7, characterized in that, The second filter layer is made of paper filter cotton, and / or, The third filter layer is made of synthetic fibers or polyester fibers; and / or, The mesh is made of 20-40 mesh metal woven mesh.

9. An exhaust chamber, characterized in that, The air intake chamber includes a filtration device according to any one of claims 1 to 8, the filtration device being disposed at the inlet of the air intake chamber.

10. An air supply system, characterized in that, The air supply system includes a magnetic levitation fan and an air intake chamber as described in claim 9, wherein the air intake chamber is located at the air inlet end of the magnetic levitation fan.

Images