Detachable combined type fan silencing and filtering device

Abstract

A detachable combined type fan silencing and filtering device relates to the technical field of fan silencing and filtering and comprises a filter and a silencer which are installed at an inlet of a fan, the filter and the silencer are detachably connected through a connecting supporting piece, and the filter and the silencer are both cylindrical. The filter comprises an outer cylinder, an annular net cylinder fixed in the outer cylinder and a drawing device playing a filtering role, an annular containing space is formed between the outer cylinder and the annular net cylinder, and a plurality of detachable drawing devices are arranged in the containing space; the silencer comprises an outer barrel protection cover, a plurality of silencing pieces and a punched plate, the silencing pieces are arranged in the outer barrel protection cover in parallel, the peripheries of the silencing pieces are surrounded by the punched plate, an annular cavity is formed between the punched plate and the outer barrel protection cover, and silencing cotton is filled in the annular cavity. The silencer is reasonable in design, the filter cotton is efficiently and conveniently replaced, the silencing effect is good, and the whole combined structure is convenient to disassemble and assemble and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of fan silencing and filtering, in particular to a detachable combined fan silencing and filtering device. Background Art

[0002] In occasions where requirements for gas cleanliness and noise control need to be met, filters and silencers are usually installed at the inlet of the fan to purify and silence the air. However, for large-sized fans, due to the limitation of the air intake volume, the volume of the filter increases, the weight increases, and it becomes particularly difficult to replace the filter cotton after long-term use; the volume of the silencer increases accordingly, and the silencing effect fails to meet the specified requirements, and the silencing measures inside the silencer need to be further optimized; in addition, there are often no floor feet at the customer site to support the filter, which makes the installation of the equipment very inconvenient and reduces the operating stability of the filter and the silencer. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a detachable combined fan silencing and filtering device, which is convenient for replacing the filter cotton of the filter and can effectively reduce the noise at the fan inlet.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is: it includes a filter and a silencer installed at the fan inlet, and the filter and the silencer are detachably connected through a connection support; both the filter and the silencer are cylindrical. The filter includes an outer cylinder, an annular net cylinder fixed inside the outer cylinder, and a draw device for filtering. An annular accommodation space is formed between the outer cylinder and the annular net cylinder, and a plurality of detachable draw devices are arranged in the accommodation space; the silencer includes an outer cylinder protection cover, silencing sheets, and a perforated plate. A plurality of silencing sheets are provided, and each silencing sheet is arranged in parallel inside the outer cylinder protection cover. The outer periphery of the silencing sheet is surrounded by the perforated plate, and an annular cavity is formed between the perforated plate and the outer cylinder protection cover, and the annular cavity is filled with sound-absorbing cotton.

[0005] Preferably, a plurality of outer cylinder wall supports are provided on the inner wall of the outer cylinder. The inner wall of the outer cylinder is fixedly connected to the annular net cylinder through the outer cylinder wall supports. A support rod is arranged inside the annular net cylinder cavity. The support rod and the outer cylinder wall supports together constitute the internal support framework of the entire filter.

[0006] Preferably, the connection support includes a plurality of circumferential supports fixedly connecting the outer wall of the filter and the outer wall of the silencer, and a bottom support for supporting the fan silencing and filtering device. The bottom support includes a support seat and a triangular support member. The support seat is fixed to the bottom of the silencer, and the triangular support member connects the support seat and the outer wall of the filter.

[0007] Preferably, the drawing device is of a split structure. The drawing device includes a sector-shaped top plate and an arc-shaped drawing frame. One side of the drawing frame is connected to the middle of the sector-shaped top plate. A filter cotton is installed in the drawing frame. The sector-shaped top plates of several drawing devices form an annular structure and are arranged on the annular mesh cylinder.

[0008] Preferably, a diamond-shaped mesh is welded in the drawing frame, and the filter cotton is fixed by the diamond-shaped mesh of the drawing device and the annular mesh cylinder.

[0009] Preferably, lifting eye bolts are arranged on the sector-shaped top plate of the drawing device for pulling out the drawing device to replace the filter cotton.

[0010] Preferably, a plurality of drawing part supports are arranged on the outer periphery of the annular mesh cylinder. The drawing part supports correspond to the drawing devices one by one and are used to support the drawing devices.

[0011] Preferably, the silencing piece is conical near the air inlet.

[0012] Preferably, a plurality of support plates perpendicular to the silencing pieces are fixed in the outer cylinder protection cover, and the support plates are fixedly connected to the silencing pieces.

[0013] Preferably, the sound-absorbing cotton is wrapped with non-woven fabric on the outside.

[0014] According to the above technical solution, the beneficial effects of the present utility model are as follows:

[0015] 1. The design of the present utility model is reasonable. The filter uses a drawing device, which is convenient for replacing the filter cotton, avoiding the problem of difficult disassembly and assembly when replacing the filter cotton due to the large volume and weight of the filter, and making the later maintenance more efficient and convenient.

[0016] 2. By setting the silencing piece to a triangular cone shape near the air outlet, the present utility model can make the air flow into the fan interior better while ensuring the silencing effect, and the silencing effect is good.

[0017] 3. By connecting and fixing the filter and the silencer together through an external connecting support, the present utility model effectively solves the problem that the filter cannot be fixed, resulting in unstable center of gravity of the fan. The overall combined structure is convenient for disassembly and maintenance, ensuring the air cleanliness, reducing the overall noise of the fan equipment, and at the same time ensuring the reliability of the fan operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is Figure 1 the left view of

[0020] Figure 3 is Figure 1 the sectional view of

[0021] Figure 4 Schematic structural diagram of a silencer;

[0022] Figure 5 is Figure 4 left view of;

[0023] Figure 6 Schematic structural diagram of a filter;

[0024] Figure 7 Schematic diagram of the inner cavity structure of the filter;

[0025] Figure 8 Front view of the pulling device;

[0026] Figure 9 Top view of the pulling device.

[0027] Markings in the figure: 1. Filter, 2. Silencer, 3. Circumferential support, 4. Triangular support member, 5. Connection plate, 6. Sound-absorbing sheet, 7. Support plate, 8. Sound-absorbing cotton, 9. Punched plate, 10. Support bottom plate, 11. Support hole, 12. Annular mesh cylinder, 13. Pulling member support, 14. Support rod, 15. Outer cylinder wall support, 16. Pulling device, 17. Support seat. Detailed implementation manners

[0028] The following further elaborates on the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0029] The structures, ratios, sizes, etc. depicted in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementable conditions of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change in the ratio relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0030] Meanwhile, it should be noted that unless otherwise specified, "multiple" means two or more; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front end", "rear end", etc. are based on the orientation or positional relationships shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as within the implementable scope of the present utility model.

[0031] Such as Figures 1 to 3, A detachable combined fan silencing and filtering device, including a filter 1 and a silencer 2. The filter 1 and the silencer 2 are detachably connected by a connecting support member, and both the filter 1 and the silencer 2 are cylindrical.

[0032] The connecting support member includes several circumferential supports 3 fixedly connecting the outer wall of the filter 1 and the outer wall of the silencer 2, and a bottom support for supporting the fan silencing and filtering device. The bottom support includes a support base 17 and a triangular support member 4. The support base 17 is fixed to the bottom of the silencer 2, and the triangular support member 4 connects the support base 17 and the outer wall of the filter 1.

[0033] A number of support holes 11 are opened on the outer wall of the outer cylinder of the filter 1. The bottom of the filter 1 is provided with a support bottom plate 10, and the support bottom plate 10 is U-shaped. A number of square connecting plates 5 are provided on the outer wall of the protective cover of the outer cylinder of the silencer 2. The number of the connecting plates 5, the support holes 11 and the circumferential supports 3 is the same. One end of the circumferential support 3 is bolted to the support hole 11 of the filter 1, and the other end is connected to the connecting plate 5.

[0034] The bottom of the silencer 2 is provided with a support base 17 for supporting the weight of the silencer 2. The support base 17 is composed of a square base at the bottom and four vertical support rod arms. The upper ends of the four support rod arms are connected to the bottom of the silencer 2, and the lower ends are connected to the four corners of the square base. See Figure 4 shown. There are two triangular support members 4, which are right-angled triangles. The two ends of one right-angled side of the triangular support member 4 are bolted to one support rod arm of the support base 17, and the two ends of the other right-angled side are respectively connected to the support bottom plate 10 and the support rod arm of the support base 17. See, for example, Figure 1 .

[0035] A number of circumferential supports 3 connect the circumferences of the filter 1 and the silencer 2, and two triangular support members 4 connect the bottoms of the filter 1 and the silencer 2, ensuring the overall structural stability of the filter 1 and the silencer 2, and avoiding the instability of the equipment center of gravity caused by the lack of fixed support at the site due to the excessive weight of the filter.

[0036] As Figures 6 to 7 shown, the filter 1 includes an outer cylinder, an annular mesh cylinder 12 fixed inside the outer cylinder, and a draw-out device 16 for filtering. An annular accommodation space is formed between the outer cylinder and the annular mesh cylinder 12, and a plurality of detachable draw-out devices 16 are provided in the accommodation space.

[0037] A number of outer cylinder wall supports 15 are provided on the inner wall of the outer cylinder. The inner wall of the outer cylinder is fixedly connected to the annular mesh cylinder 12 through the outer cylinder wall supports 15. A support rod 14 is provided in the inner cavity of the annular mesh cylinder 12. The support rod 14 and the outer cylinder wall supports 15 together constitute the internal support framework of the entire filter 1.

[0038] Furthermore, two support rods 14 are connected to form a cross-shaped bracket. One end of the third support rod is vertically connected to the cross intersection of the two support rods, and the other end is connected to the center of the round cover of the filter 1.

[0039] As Figures 8 to 9 shown, the drawing device 16 is of a split structure. The drawing device 16 includes a fan-shaped top plate and an arc-shaped drawing frame body. One side of the drawing frame body is connected to the middle of the fan-shaped top plate. The arc length of the connection part of the fan-shaped top plate is the same as the arc length of the drawing and clamping frame body. Filter cotton is installed in the drawing frame body. The fan-shaped top plates of several drawing devices 16 are arranged in a ring structure on the annular mesh cylinder 12.

[0040] A diamond-shaped net is welded in the drawing frame body. The filter cotton is fixed by the diamond-shaped net of the drawing device 16 and the annular mesh cylinder 12. Hoisting bolts are arranged on the fan-shaped top plate of the drawing device 16 for drawing out the drawing device 16 to replace the filter cotton.

[0041] A number of drawing piece supports 13 are arranged on the outer periphery of the annular mesh cylinder 12. The drawing piece supports 13 correspond to the drawing devices 16 one by one and are used to support the drawing devices 16.

[0042] As Figures 1 to 5 shown, the silencer 2 includes an outer cylinder protection cover, a silencing sheet 6 and a punched plate 9. A number of silencing sheets 6 are provided. Each silencing sheet 6 is arranged in parallel inside the outer cylinder protection cover. The outer periphery of the silencing sheet 6 is surrounded by the punched plate 9. The punched plate 9 is made of steel plate to ensure strength. An annular cavity is formed between the punched plate 9 and the outer cylinder protection cover. Sound-absorbing cotton 8 is filled in the annular cavity. The sound-absorbing cotton 8 is wrapped with non-woven fabric to prevent the leakage of the sound-absorbing cotton 8 and the entry of impurities into the fan.

[0043] The silencing sheet 6 is conical near the air inlet, which can make the air flow into the fan interior better while ensuring silencing. A plurality of support plates 7 perpendicular to the silencing sheet 6 are fixed inside the outer cylinder protection cover. The support plates 7 are fixedly connected to the silencing sheet 6.

[0044] As Figure 3 shown, the circumferential diameter of the filter is larger than the circumferential diameter of the silencer. During use, the air flow of the fan enters from above the connection surface of the filter 1 and the silencer 2 along the direction of arrow C, and successively passes through the filter 1 and the silencer 2. The air flow enters from the opposite side, avoiding the harm caused by the passage of personnel on the inlet side of the fan, and being safer during use.

[0045] It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A detachable combined fan silencing and filtering device, comprising a filter (1) and a silencer (2) installed at the fan inlet, characterized in that: The filter (1) and the silencer (2) are detachably connected by a connecting support member; Both the filter (1) and the silencer (2) are cylindrical. The filter (1) includes an outer cylinder, an annular mesh cylinder (12) fixed inside the outer cylinder, and a draw-out device (16) for filtering. An annular accommodation space is formed between the outer cylinder and the annular mesh cylinder (12), and a plurality of detachable draw-out devices (16) are provided in the accommodation space; The silencer (2) includes an outer cylinder protection cover, sound-absorbing sheets (6), and a perforated plate (9). A number of sound-absorbing sheets (6) are provided, and each sound-absorbing sheet (6) is arranged in parallel inside the outer cylinder protection cover. The outer periphery of the sound-absorbing sheet (6) is surrounded by the perforated plate (9). An annular cavity is formed between the perforated plate (9) and the outer cylinder protection cover, and sound-absorbing cotton (8) is filled in the annular cavity.

2. The detachable combined fan silencing and filtering device according to claim 1, characterized in that: A number of outer cylinder wall supports (15) are provided on the inner wall of the outer cylinder. The inner wall of the outer cylinder is fixedly connected to the annular mesh cylinder (12) through the outer cylinder wall supports (15). A support rod (14) is provided in the inner cavity of the annular mesh cylinder (12). The support rod (14) and the outer cylinder wall supports (15) together constitute the internal support framework of the entire filter (1).

3. The detachable combined fan silencing and filtering device according to claim 2, characterized in that: The connecting support member includes a number of circumferential supports (3) fixedly connecting the outer wall of the filter (1) and the outer wall of the silencer (2), and a bottom support for supporting the fan silencing and filtering device. The bottom support includes a support seat (17) and a triangular support member (4). The support seat (17) is fixed to the bottom of the silencer (2), and the triangular support member (4) connects the support seat (17) and the outer wall of the filter (1).

4. A detachable combined fan silencing and filtering device according to claim 1, characterized in that: The draw-out device (16) is of a split structure. The draw-out device (16) includes a sector-shaped top plate and an arc-shaped draw-out frame body. One side of the draw-out frame body is connected to the middle of the sector-shaped top plate. Filter cotton is installed in the draw-out frame body. The sector-shaped top plates of a number of draw-out devices (16) are arranged in a ring structure on the annular mesh cylinder (12).

5. The detachable combined fan silencing and filtering device according to claim 4, characterized in that: A diamond-shaped mesh is welded inside the draw-out frame body, and the filter cotton is fixed through the diamond-shaped mesh of the draw-out device (16) and the annular mesh cylinder (12).

6. A detachable combined fan silencing and filtering device according to claim 4, characterized in that: A lifting eye bolt is provided on the sector-shaped top plate of the draw-out device (16) for pulling out the draw-out device (16) to replace the filter cotton.

7. A detachable combined fan silencing and filtering device according to claim 5 or 6, characterized in that: A number of draw-out member supports (13) are provided on the outer periphery of the annular mesh cylinder (12). The draw-out member supports (13) correspond to the draw-out devices (16) one by one and are used to support the draw-out devices (16).

8. A detachable combined fan silencing and filtering device according to claim 1, characterized in that: The sound-absorbing sheet (6) is conical near the air inlet.

9. A detachable combined fan silencing and filtering device according to claim 1, characterized in that: A number of support plates (7) perpendicular to the sound-absorbing sheets (6) are fixed inside the outer cylinder protection cover, and the support plates (7) are fixedly connected to the sound-absorbing sheets (6).

10. A detachable combined fan silencing and filtering device according to claim 1, characterized in that: The sound-absorbing cotton (8) is wrapped with non-woven fabric on the outside.

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