Filtering device and ventilation system

Abstract

The invention provides a filtering device. The filtering device comprises a base frame; the first rotating shaft is rotatably arranged on the base frame; the second rotating shaft and the first rotating shaft are arranged in parallel at an interval and are rotatably arranged on the base frame, and a preset plane is defined by the axis of the first rotating shaft and the axis of the second rotating shaft; the filter screen is provided with a first winding section, a filter section and a second winding section which are sequentially arranged, the first winding section is wound on the first rotating shaft, and the second winding section is wound on the second rotating shaft; the abutting structure comprises a first abutting shaft movably arranged on the base frame, the first abutting shaft is located between the first rotating shaft and the second rotating shaft, and when the first abutting shaft moves in the direction close to or away from the preset plane, the first abutting shaft can push the middle of the filtering section to move; when the second rotating shaft rotates, the second rotating shaft can drive the filtering section to be wound on the second rotating shaft. According to the technical scheme, the problem that the windward area of a filter screen in the prior art cannot be adjusted is effectively solved.

Description

Technical Field

[0001] The present invention relates to a filtering device, and more particularly, to a filtering device and a ventilation system. Background Art

[0002] In the air management of computer rooms, the air filtering link is crucial. Especially for the fresh air system, effective filtering treatment must be carried out before introducing external air into the computer room to prevent the intrusion of dust and pollutants, which may damage the high-precision electronic equipment in the computer room. Similarly, the air conditioning system is also equipped with a filtering device at the air inlet during design to remove dust particles in the air and maintain the cleanliness of the air inside the computer room. Whether it is the fresh air system or the air conditioning system, air filtering is an essential link. It ensures the quality of the internal environment of the computer room, protects sensitive electronic equipment from external pollutants, and realizes effective energy savings in different seasons through optimized operation strategies.

[0003] In the prior art, the filter is in a sheet-like structure. After the filter is used for a period of time, a new filter needs to be replaced to achieve a better filtering effect again. However, the area of the filter is fixed and cannot be adjusted according to the air volume. Summary of the Invention

[0004] The main object of the present invention is to provide a filtering device and a ventilation system to solve the problem that the windward area of the filter screen in the related art cannot be adjusted.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a filtering device, including: a base frame; a first rotating shaft rotatably provided on the base frame; a second rotating shaft parallel to and spaced from the first rotating shaft and rotatably provided on the base frame, the axes of the first rotating shaft and the second rotating shaft defining a preset plane; a filter screen having a first winding section, a filtering section, and a second winding section arranged in sequence, the first winding section being wound around the first rotating shaft, and the second winding section being wound around the second rotating shaft; a pressing structure including a first pressing shaft movably provided on the base frame, the first pressing shaft being located between the first rotating shaft and the second rotating shaft, and when the first pressing shaft moves in a direction approaching or away from the preset plane, the first pressing shaft can push the middle part of the filtering section to move; wherein, the second rotating shaft is the driving shaft, the first rotating shaft is the driven shaft, and when the second rotating shaft rotates, the second rotating shaft can drive the filtering section to wind around the second rotating shaft.

[0006] Furthermore, the filtering device further includes a controller, and the pressing structure further includes a first driving member provided on the base frame, the first driving member being in signal connection with the controller, and the first driving member can drive the first pressing shaft to move.

[0007] Furthermore, the abutting structure further includes a connecting member movably disposed on the base frame. The connecting member is disposed between the first driving member and the first abutting shaft, and the first abutting shaft is disposed on the connecting member.

[0008] Furthermore, the first abutting shaft is rotatably disposed on the connecting member.

[0009] Furthermore, the abutting structure further includes a second abutting shaft connected to the base frame. The second abutting shaft is spaced apart from the first abutting shaft, and the first abutting shaft and the second abutting shaft are respectively located on both sides of the filtering section.

[0010] Furthermore, both the first abutting shaft and the second abutting shaft are plural, and the plural first abutting shafts and the plural second abutting shafts are alternately arranged.

[0011] Furthermore, the filtering device includes a first sensor signal-connected to the controller. The first sensor is used to detect the air intake volume on the air inlet side of the filtering section. When the detection value of the first sensor is greater than or equal to the first preset value, the first driving member can drive the first abutting shaft to move, so that the first abutting shaft moves in a direction close to or away from the preset plane.

[0012] Furthermore, the filtering device further includes a second driving member signal-connected to the controller. The second driving member is drivingly engaged with the second rotating shaft to rotate the second rotating shaft.

[0013] Furthermore, the filtering device includes a second sensor signal-connected to the controller. The second sensor is used to detect the air outlet volume on the air outlet side of the filtering section. When the difference between the detection value of the first sensor and the detection value of the second sensor is greater than or equal to the second preset value, the second driving member can drive the second rotating shaft to rotate, so that the filtering section is wound around the second rotating shaft.

[0014] According to another aspect of the present invention, there is provided a ventilation system, including a ventilation system body and a filtering device disposed at an air inlet of the ventilation system body, and the filtering device is the above-mentioned filtering device.

[0015] Applying the technical solution of the present invention, the filtering device includes a base frame, a first rotating shaft, a second rotating shaft, a filter net, and an abutting structure. The first rotating shaft and the second rotating shaft are rotatably arranged on the base frame. The first rotating shaft and the second rotating shaft are parallel and spaced apart. The filter net has a first winding section, a filtering section, and a second winding section, which are arranged in sequence. The first winding section is wound around the first rotating shaft, and the second winding section is wound around the second rotating shaft. The abutting structure includes a first abutting shaft, which is connected to the base frame. The first abutting shaft is located between the first rotating shaft and the second rotating shaft and abuts against the filtering section to make the middle part of the filtering section protrude. The second rotating shaft is the driving shaft, and the first rotating shaft is the driven shaft. When the second rotating shaft rotates, the second rotating shaft can drive the filtering section to wind around the second rotating shaft. Through the above settings, the base frame can support the first rotating shaft, the second rotating shaft, and the abutting structure. The first rotating shaft and the second rotating shaft can support the filter net. When the air flow passes through the filtering section, the filtering section can block impurities in the air flow to prevent impurities from entering the ventilation equipment. After the filtering section is used, the second rotating shaft rotates, which can drive the filtering section to wind around the second rotating shaft, that is, the second winding section is the used filter net. When the second rotating shaft rotates, it can drive the first winding section to move through the filtering section, so that the first winding section is released from the first rotating shaft and moves between the first rotating shaft and the second rotating shaft to be converted into the filtering section to filter the air flow. When the first abutting shaft moves, it can push the middle part of the filtering section to move, so that the middle part of the filtering section can protrude, and thus the area of the filter net between the first rotating shaft and the second rotating shaft can be increased. Therefore, the technical solution of the present application effectively solves the problem that the windward area of the filter net in the related art cannot be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 FIG. shows a three-dimensional structural schematic diagram of an embodiment of a filtering device according to the present invention;

[0018] Figure 2 FIG. shows Figure 1 a schematic diagram of the principle of connection between the controller of the filtering device and the first sensor, the second sensor, the first driving member, and the second driving member.

[0019] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0020] 10. First rotating shaft; 20. Second rotating shaft; 30. Filter screen; 31. First winding section; 32. Filtering section; 33. Second winding section; 40. Abutting structure; 41. First abutting shaft; 42. First driving member; 43. Second abutting shaft; 50. Controller; 60. First sensor; 70. Second driving member; 80. Second sensor. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] As Figure 1As shown in the figure, the filtering device of this embodiment includes: a base frame, a first rotating shaft 10, a second rotating shaft 20, a filter net 30, and an abutting structure 40. The first rotating shaft 10 is rotatably arranged on the base frame. The second rotating shaft 20 is parallel and spaced from the first rotating shaft 10, and is rotatably arranged on the base frame. The axes of the first rotating shaft 10 and the second rotating shaft 20 define a preset plane. The filter net 30 has a first winding section 31, a filtering section 32, and a second winding section 33 arranged in sequence. The first winding section 31 is wound around the first rotating shaft 10, and the second winding section 33 is wound around the second rotating shaft 20. The abutting structure 40 includes a first abutting shaft 41 movably arranged on the base frame. The first abutting shaft 41 is located between the first rotating shaft 10 and the second rotating shaft 20. When the first abutting shaft 41 moves in a direction close to or away from the preset plane, the first abutting shaft 41 can push the middle of the filtering section 32 to move. Among them, the second rotating shaft 20 is the driving shaft, and the first rotating shaft 10 is the driven shaft. When the second rotating shaft 20 rotates, the second rotating shaft 20 can drive the filtering section 32 to wind around the second rotating shaft 20.

[0025] Applying the technical solution of this embodiment, the filtering device includes a base frame, a first rotating shaft 10, a second rotating shaft 20, a filter net 30, and an abutting structure 40. The first rotating shaft 10 and the second rotating shaft 20 are rotatably arranged on the base frame. The first rotating shaft 10 and the second rotating shaft 20 are parallel and arranged at intervals. The filter net 30 has a first winding section 31, a filtering section 32, and a second winding section 33. The first winding section 31, the filtering section 32, and the second winding section 33 are arranged in sequence. The first winding section 31 is wound around the first rotating shaft 10, and the second winding section 33 is wound around the second rotating shaft 20. The abutting structure 40 includes a first abutting shaft 41. The first abutting shaft 41 is connected to the base frame. The first abutting shaft 41 is located between the first rotating shaft 10 and the second rotating shaft 20. The first abutting shaft 41 abuts against the filtering section 32 to make the middle part of the filtering section 32 protrude. The second rotating shaft 20 is the driving shaft, and the first rotating shaft 10 is the driven shaft. When the second rotating shaft 20 rotates, the second rotating shaft 20 can drive the filtering section 32 to wind around the second rotating shaft 20. Through the above settings, the base frame can support the first rotating shaft 10, the second rotating shaft 20, and the abutting structure 40. The first rotating shaft 10 and the second rotating shaft 20 can support the filter net 30. When the air flow passes through the filtering section 32, the filtering section 32 can block the impurities in the air flow to prevent the impurities from entering the ventilation system. After the filtering section 32 is used, the second rotating shaft 20 rotates, which can drive the filtering section 32 to wind around the second rotating shaft 20, that is, the second winding section 33 is the used filter net 30. When the second rotating shaft 20 rotates, it can drive the first winding section 31 to move through the filtering section 32, so that the first winding section 31 is released from the first rotating shaft 10 and moves between the first rotating shaft 10 and the second rotating shaft 20 and is converted into the filtering section 32 to filter the air flow. When the first abutting shaft 41 moves, it can push the middle part of the filtering section 32 to move, so that the middle part of the filtering section 32 can protrude, and thus the area of the filter net 30 between the first rotating shaft 10 and the second rotating shaft 20 can be increased. Therefore, the technical solution of this embodiment effectively solves the problem that the windward area of the filter net in the related technology cannot be adjusted.

[0026] The middle part of the filtering section 32 is located between the first rotating shaft 10 and the second rotating shaft 20.

[0027] The filtering device in this embodiment is a gas filtering device for filtering air.

[0028] When the filter net 30 between the second rotating shaft 20 and the first rotating shaft 10 reaches the set state during use, that is, when the filtering section 32 reaches the used state, rotate the second rotating shaft 20 to wind the used filter net 30 around the second rotating shaft 20, that is, wind the filtering section 32 around the second rotating shaft 20. At the same time, the first rotating shaft 10 rotates with the movement of the filter net to release the unused filter net 30 to the filtering working area, that is, release the first winding section 31 between the first rotating shaft 10 and the second rotating shaft 20.

[0029] Between the first rotating shaft 10 and the second rotating shaft 20 is the filtering working area.

[0030] The use of the filter screen 30 between the second rotating shaft 20 and the first rotating shaft 10 reaches the set state, which means that after the filter screen 30 between the second rotating shaft 20 and the first rotating shaft 10 is used for a period of time, that is, after the filtering section 32 is used for a period of time, the filtering section 32 accumulates dust to reach the saturation state, or the filter screen is blocked, etc., resulting in the area after the filtering section 32 being unsuitable for continued use.

[0031] As Figure 1 shown, in this embodiment, the filtering device further includes a controller 50. The abutting structure 40 further includes a first driving member 42 disposed on the base frame. The first driving member 42 is in signal connection with the controller 50, and the first driving member 42 can drive the first abutting shaft 41 to move. The controller 50 can control the operation of the first driving member 42, and further the first driving member 42 can drive the first abutting shaft 41 to move.

[0032] The first driving member 42 is a first driving motor.

[0033] As Figure 1 shown, in this embodiment, the abutting structure 40 further includes a connecting member movably disposed on the base frame. The connecting member is disposed between the first driving member 42 and the first abutting shaft 41, and the first abutting shaft 41 is disposed on the connecting member. The first driving member 42 can drive the connecting member to move, and further the connecting member can drive the first abutting shaft 41 to move.

[0034] The abutting structure 40 further includes a driving screw disposed on the rotating shaft of the first driving member 42. The driving screw is in threaded cooperation with the connecting member to drive the connecting member to move.

[0035] The connecting member includes a connecting block. A first connecting hole is provided on the connecting block, and the driving screw is in threaded cooperation with the first connecting hole.

[0036] As Figure 1 shown, in this embodiment, the first abutting shaft 41 is rotatably disposed on the connecting member. The first abutting shaft is rotatably disposed on the connecting member, so that the filtering section can move relative to the first abutting shaft more easily.

[0037] A second connecting hole is further provided on the connecting block, and the first abutting shaft is rotatably disposed in the second connecting hole.

[0038] As Figure 1As shown, in this embodiment, the abutting structure 40 further includes a second abutting shaft 43 connected to the base frame. The second abutting shaft 43 is spaced apart from the first abutting shaft 41, and the first abutting shaft 41 and the second abutting shaft 43 are respectively located on both sides of the filtering section 32. By providing the second abutting shaft 43, the area of the filter net 30 between the first rotating shaft 10 and the second rotating shaft 20 can be increased, that is, the area of the filtering section 32 can be enlarged.

[0039] The second abutting shaft 43 and the first abutting shaft 41 are arranged in parallel.

[0040] The first abutting shaft 41 and the second abutting shaft 43 are arranged in a front-back offset manner along the direction perpendicular to the extension of the filter net 30, so that the filter net 30 between the second rotating shaft 20 and the first rotating shaft 10 is tensioned in a wavy shape.

[0041] The first abutting shaft 41 and the second abutting shaft 43 are spaced apart, and the filter net 30 between the second rotating shaft 20 and the first rotating shaft 10 is tensioned in a wavy shape.

[0042] When the first abutting shaft 41 moves, the offset distance between the adjacent first abutting shaft 41 and the second abutting shaft 43 can be adjusted, so as to adjust the peak height of the filtering section 32, and further adjust the filtering area of the filter net 30 in the filtering working interval, that is, adjust the filtering area of the filtering section 32.

[0043] The filter net 30 between the second rotating shaft 20 and the first rotating shaft 10 refers to the filtering section 32.

[0044] The filtering section 32 is in a wavy shape, which can increase the area of the filter net 30 in the filtering working interval, that is, increase the windward area of the filtering section 32, increase the ventilation volume, and improve the filtering efficiency. At the same time, the offset distance between the adjacent first abutting shaft 41 and the second abutting shaft 43 is adjustable. When the offset distance between the first abutting shaft 41 and the second abutting shaft 43 increases, the peak height of the filter net 30 increases, and the filtering area of the filter net 30 in the filtering working interval increases.

[0045] The first abutting shaft 41 is a moving wheel shaft, and the second abutting shaft 43 is a fixed wheel shaft. The position of the fixed wheel shaft is fixed, and the moving wheel shaft can move along the direction perpendicular to the extension of the filter net 30.

[0046] The extending direction of the filter net 30 is parallel to the preset plane.

[0047] Such as Figure 1As shown, in this embodiment, there are multiple first abutting shafts 41 and multiple second abutting shafts 43, and the multiple first abutting shafts 41 and the multiple second abutting shafts 43 are arranged alternately. Through the above arrangement, the area of the filter screen between the first rotating shaft 10 and the second rotating shaft 20 can be increased, that is, the area of the filtering section 32 is increased. It can also make the filtering section 32 be tensioned in a wavy shape. The alternating arrangement of the multiple first abutting shafts 41 and the multiple second abutting shafts 43 can also make the filter screen 30 between the second rotating shaft 20 and the first rotating shaft 10 be in a wavy shape with multiple undulations, that is, the filtering section 32 is in a wavy shape with multiple undulations.

[0048] Each first abutting shaft 41 is respectively connected to a first driving member 42 for driving the corresponding first abutting shaft 41 to move.

[0049] The controller 50 controls the first driving member 42 to rotate forward or backward to drive the first abutting shaft 41 to move forward or backward, thereby adjusting the dislocation distance between the first abutting shaft 41 and the second abutting shaft 43, and realizing the adjustment of the filtering area of the filter screen 30 in the filtering working area, that is, realizing the adjustment of the filtering area of the filtering section 32.

[0050] As Figure 1 and Figure 2 shown, in this embodiment, the filtering device includes a first sensor 60 that is signal-connected to the controller 50. The first sensor 60 is used to detect the air inflow volume on the air inlet side of the filtering section 32. When the detection value of the first sensor 60 is greater than or equal to the first preset value, the first driving member 42 can drive the first abutting shaft 41 to move so that the first abutting shaft 41 moves in a direction close to or away from the preset plane. By setting the first sensor 60, the air inflow volume on the air inlet side of the filtering section 32 can be detected. In this way, when the detection value of the first sensor 60 is greater than or equal to the first preset value, the first driving member 42 can drive the first abutting shaft 41 to move. When the first abutting shaft 41 moves, it can drive the filtering section 32 to bulge, increasing the area of the filtering section 32, and thus improving the filtering efficiency.

[0051] The first sensor 60 is a first air volume sensor.

[0052] According to the different air volume values detected by the first sensor 60, the controller 50 controls the first abutting shaft 41 to move to adjust the dislocation distance between the first abutting shaft 41 and the second abutting shaft 43, and further adjust the windward area of the filter screen 30 in the filtering working area.

[0053] When the air volume detected by the first sensor 60 is greater than the set threshold, the controller 50 controls the first driving member 42 to rotate forward to drive the first abutting shaft 41 to move away from the second abutting shaft 43, thereby increasing the dislocation distance between the first abutting shaft 41 and the second abutting shaft 43, increasing the windward area of the filter screen 30 in the filtering working area, and improving the filtering efficiency.

[0054] As Figure 1 and Figure 2 shown, in this embodiment, the filtering device further includes a second driving member 70 signal - connected to the controller 50. The second driving member 70 is drivingly engaged with the second rotating shaft 20 to rotate the second rotating shaft 20. The controller 50 can control the operation of the second driving member. Further, the second driving member 70 can drive the second rotating shaft 20 to rotate. Thus, the second rotating shaft 20 can drive the filtering section 32 to wind around the second rotating shaft 20, and a part of the structure of the first winding section 31 on the first rotating shaft 10 moves between the first rotating shaft 10 and the second rotating shaft 20 and is converted into the filtering section 32, which can filter the air flow.

[0055] The second driving member 70 is a second motor.

[0056] In other embodiments, the rotation of the second rotating shaft 20 can also be manually rotated by a person.

[0057] The controller 50 is connected to the second driving member 70 in a wired or wireless manner.

[0058] When the filter net 30 between the second rotating shaft 20 and the first rotating shaft 10 reaches the set state in use, the controller 50 controls the second driving member 70 to start, so as to drive the second rotating shaft 20 to rotate, collect the used filter net 30, that is, collect the filtering section 32. At the same time, it drives the first rotating shaft 10 to rotate and releases the unused filter net 30, that is, releases the first winding section 31. When the filtering working area is all unused filter nets, the controller 50 controls the second driving member 70 to stop.

[0059] When the filter net 30 between the second rotating shaft 20 and the first rotating shaft 10 reaches the set state in use, the controller 50 controls the second driving member 70 to start, so as to drive the second rotating shaft 20 to rotate at a set speed for a set time and then automatically stop. Because the distance between the second rotating shaft 20 and the first rotating shaft 10 is fixed, when the rotation speed of the second rotating shaft 20 is fixed, the rotation time of the second rotating shaft 20 required to replace a new filter net in the filtering working area is fixed.

[0060] As Figure 1 and Figure 2As shown in the figure, in this embodiment, the filtering device further includes a second sensor 80 that is signal-connected to the controller 50. The second sensor 80 is used to detect the air volume on the air outlet side of the filtering section 32. When the difference between the detection value of the first sensor 60 and the detection value of the second sensor 80 is greater than or equal to the second preset value, the second driving member 70 can drive the second rotating shaft 20 to rotate, so that the filtering section 32 is wound around the second rotating shaft 20. By providing the second sensor 80, the air volume on the air outlet side of the filtering section 32 can be detected. Furthermore, the controller 50 can determine the operating timing of the second driving member 70 according to the detection values of the first sensor 60 and the second sensor 80.

[0061] The second sensor 80 is a second air volume sensor.

[0062] When the difference in the air volume detected by the first sensor 60 and the second sensor 80 is greater than the set threshold value, it indicates that the filter screen is dusty or blocked. At this time, the controller 50 controls the second driving member 70 to work, drives the second rotating shaft 20 to rotate, collects the used filter screen 30, and drives the first rotating shaft 10 to rotate, releasing a new unused filter screen 30, that is, releasing the first winding section 31, so that the filtering working area between the second rotating shaft 20 and the first rotating shaft 10 is tensioned with a new unused filter screen 30.

[0063] The filtering device further includes a remote control center for communicating with the controller 50 to remotely control the first driving member 42 and the second driving member 70 to work. The remote control center can be an application app installed on the mobile phone or computer of the control personnel. The control personnel send instructions to the controller 50 through the remote control center. After the controller 50 receives the instructions, it controls the first driving member 42 and the second driving member 70 to perform corresponding operations.

[0064] In the filtering device provided in this embodiment, by providing the first rotating shaft 10 and the second rotating shaft 20, the first rotating shaft 10 winds a large amount of new filter screen 30 materials, and the second rotating shaft 20 collects the waste of the used filter screen 30. When the filter screen 30 in the filtering working area between the first rotating shaft 10 and the second rotating shaft 20 is dusty or blocked, rotating the second rotating shaft 20 can make a new filter screen 30 appear in the filtering working area, avoiding frequent cleaning or replacement, and the operation is very convenient and can be used for a long time at one time.

[0065] At the same time, by adding the first abutting shaft 41 and the second abutting shaft 43 arranged in a staggered manner on both sides of the filter screen, the filter screen 30 is tensioned in a wavy shape, so that the filtering area of the filter screen in the filtering working area can be increased and the filtering efficiency can be improved. In addition, the staggered distance between the adjacent first abutting shaft 41 and the second abutting shaft 43 is adjustable, and the filtering area of the filter screen 30 in the filtering working area can be further adjusted, with high flexibility.

[0066] The filtering device of this embodiment has the following advantages:

[0067] 1. In the filtering device provided in this embodiment, by adding the first abutting shaft 41 and the second abutting shaft 43 which are arranged in a staggered manner on both sides of the filter screen, the filter screen 30 is tensioned in a wavy shape. In this way, the filtering area of the filter screen 30 in the filtering working area can be increased, and the filtering efficiency can be improved. In addition, the staggered distance between adjacent first abutting shafts 41 and second abutting shafts 43 is adjustable. In this way, the filtering area of the filter screen 30 in the filtering working area can be adjusted according to the size of the seasonal wind and the specific heat dissipation requirements in different seasons, with high flexibility and meeting the needs of high-end computer rooms.

[0068] 2. In the filtering device provided in this embodiment, by respectively arranging the first sensor 60 and the second sensor 80 on both sides of the filtering device, based on the air volume data detected by the first sensor 60 and the second sensor 80, the filtering device is automatically driven to replace the new filter screen 30. At the same time, the windward area of the filter screen 30 in the filtering working area can also be automatically adjusted, improving the filtering efficiency and making the operation intelligent and convenient.

[0069] 3. The filtering device provided in this embodiment is provided with the first rotating shaft 10 and the second rotating shaft 20. The first rotating shaft 10 winds a large amount of new filter screen 30 materials, and the second rotating shaft 20 collects the waste filter screen 30 after use. When the filter screen 30 in the filtering working area between the first rotating shaft 10 and the second rotating shaft 20 is dusty or blocked, rotating the second rotating shaft 20 can make a new filter screen 30 appear in the filtering working area, solving the problem that the filter screen in the prior art needs to be frequently cleaned or replaced. The operation is very convenient. The filtering device of this embodiment can be used for a long time at one time, greatly reducing the replacement frequency of the filter screen 30 and reducing the maintenance cost.

[0070] The ventilation system of this embodiment includes a ventilation system body and a filtering device arranged at the air inlet of the ventilation system body. The filtering device is the above-mentioned filtering device. When the above-mentioned filtering device is in use, when the first abutting shaft moves, it can push the middle part of the filtering section to move, so that the middle part of the filtering section can protrude, thereby increasing the area of the filter screen between the first rotating shaft and the second rotating shaft, and thus improving the filtering efficiency. The ventilation system with the above-mentioned filtering device also has the above-mentioned advantages.

[0071] In an optional implementation manner, the ventilation system is an air conditioner.

[0072] In another optional implementation manner, the ventilation system is a fresh air system.

[0073] In another optional implementation manner, the ventilation system is a ceiling heater.

[0074] In another optional implementation manner, the ventilation system is a ceiling fan.

[0075] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0076] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0077] In addition, it should be noted that using words such as "first", "second" etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0078] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A filtering device, characterized in that: include: Scaffolding; A first rotating shaft (10), the first rotating shaft (10) being rotatably arranged on the base frame; A second rotating shaft (20) is arranged parallel to and spaced from the first rotating shaft (10), and is rotatably arranged on the base frame, wherein the axis of the first rotating shaft (10) and the axis of the second rotating shaft (20) define a preset plane; A filter screen (30), the filter screen (30) comprising a first winding section (31), a filtering section (32) and a second winding section (33) which are arranged in sequence, the first winding section (31) being wound around the first rotating shaft (10), and the second winding section (33) being wound around the second rotating shaft (20); a supporting structure (40), the supporting structure (40) comprising a first supporting shaft (41) movably arranged on the base frame, the first supporting shaft (41) being located between the first rotating shaft (10) and the second rotating shaft (20), and when the first supporting shaft (41) moves in a direction approaching or away from the preset plane, the first supporting shaft (41) can push the middle part of the filter section (32) to move; The second rotating shaft (20) is a driving shaft, the first rotating shaft (10) is a driven shaft, and when the second rotating shaft (20) rotates, the second rotating shaft (20) can drive the filter section (32) to be wound around the second rotating shaft (20).

2. The filtering device according to claim 1, characterized in that: The filtering device further comprises a controller (50), and the abutting structure (40) further comprises a first driving member (42) arranged on the base frame, the first driving member (42) is connected to the controller (50) by signal, and the first driving member (42) can drive the first abutting shaft (41) to move.

3. The filtering device according to claim 2, characterized in that: The abutting structure (40) further comprises a connecting member movably arranged on the base frame, wherein the connecting member is arranged between the first driving member (42) and the first abutting shaft (41), and the first abutting shaft (41) is arranged on the connecting member.

4. The filtering device according to claim 3, characterized in that: The first abutting shaft (41) is rotatably arranged on the connecting member.

5. The filtering device according to any one of claims 1 to 4, characterized in that: The abutting structure (40) further comprises a second abutting shaft (43) connected to the base frame, the second abutting shaft (43) being arranged at an interval from the first abutting shaft (41), and the first abutting shaft (41) and the second abutting shaft (43) being respectively located on both sides of the filtering section (32).

6. The filtering device according to claim 5, characterized in that: There are a plurality of the first abutting shafts (41) and a plurality of the second abutting shafts (43), and the plurality of the first abutting shafts (41) and the plurality of the second abutting shafts (43) are alternately arranged.

7. The filtering device according to any one of claims 2 to 4, characterized in that: The filtering device further comprises a first sensor (60) connected to the controller (50) by signal, wherein the first sensor (60) is used to detect the air intake volume at the air intake side of the filtering section (32); when the detection value of the first sensor (60) is greater than or equal to a first preset value, the first driving member (42) is capable of driving the first abutting shaft (41) to move, so that the first abutting shaft (41) moves in a direction close to or away from the preset plane.

8. The filtering device according to claim 7, characterized in that: The filtering device further comprises a second driving member (70) connected to the controller (50) by signal, and the second driving member (70) is drivingly matched with the second rotating shaft (20) to rotate the second rotating shaft (20).

9. The filtering device according to claim 8, characterized in that: The filtering device further comprises a second sensor (80) connected to the controller (50) by signal, the second sensor (80) being used to detect the air flow rate at the air flow side of the filtering section (32), and when the difference between the detection value of the first sensor (60) and the detection value of the second sensor (80) is greater than or equal to a second preset value, the second driving member (70) is capable of driving the second rotating shaft (20) to rotate, so that the filtering section (32) is wound around the second rotating shaft (20).

10. A ventilation system, comprising a ventilation system body and a filter device arranged at an air inlet of the ventilation system body, characterized in that: The filtering device is the filtering device according to any one of claims 1 to 9.

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