Primary and medium efficiency filtering device and combined air cabinet

Abstract

The utility model provides a primary and medium-efficiency filtering device and a combined air cabinet. The primary and medium-efficiency filtering device comprises a frame and a plurality of primary and medium-efficiency filtering components, the frame comprises an outer frame, a plurality of vertical frame beams and a plurality of transverse frame beams, an installation space is defined by the outer frame, the vertical frame beams are arranged in the installation space side by side, and the transverse frame beams are arranged in the installation space side by side; and the primary and medium efficiency filter assemblies are correspondingly and detachably arranged at the ventilation channels. The primary and medium-efficiency filtering device is reasonable in structural design and convenient to splice, after the primary and medium-efficiency filtering device is installed on the combined air cabinet, personnel can enter a combined section and then penetrate through the primary and medium-efficiency filtering device to enter other combined sections by disassembling and assembling the primary and medium-efficiency filtering assemblies and the transverse frame beams or the vertical frame beams, and therefore the number of access doors is reduced, and the maintenance cost is reduced. And therefore, external dust is prevented from entering the combined section from a gap between the access door and the access hole, and air leakage caused by the gap can be avoided, so that the air pressure in the combined section is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air treatment, in particular to a primary and secondary efficiency filtering device and a combined air cabinet. Background Art

[0002] A modular air hood is an air handling device composed of various air-handling functional sections. It does not have its own cooling or heat source and uses cold and hot water as a medium. Each functional section has a unit body that performs one or more air treatment functions to complete various functions such as air filtration, purification, cooling, heating, humidification, silencing, and ventilation. Today, as changes in living environments affect people's air quality, more functional sections are required, which leads to longer units. This in turn leads to problems such as difficulty in transporting the units and the units being too long to enter the site upon arrival. Therefore, the modular air hood is rationally designed to be divided into multiple, mutually removable sections to solve this problem.

[0003] In the combined section provided with the filter device, the current filter device has a complex structure, is difficult to splice, and is relatively time-consuming to install on site. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a primary and secondary efficiency filtering device and a combined wind cabinet.

[0005] One embodiment of the present invention provides a primary and secondary efficiency filter device, comprising: a frame and a plurality of primary and secondary efficiency filter components;

[0006] The frame includes an outer frame, a plurality of vertical frame beams and a plurality of horizontal frame beams, the outer frame is surrounded to form an installation space, the plurality of vertical frame beams are arranged side by side in the installation space, the two ends of the vertical frame beams are respectively detachably connected to the outer frame, the plurality of horizontal frame beams are arranged side by side in the installation space, the vertical frame beams and the horizontal frame beams are staggered with each other, wherein the horizontal frame beam includes a plurality of sub-frame beams, the plurality of vertical frame beams and the plurality of sub-frame beams of the same horizontal frame beam are arranged at intervals along the arrangement direction of the vertical frame beams, the two ends of the sub-frame beams located at the starting end and the end end are respectively detachably connected to the vertical frame beam and the outer frame, the two ends of the sub-frame beams located between adjacent vertical frame beams are respectively detachably connected to adjacent vertical frame beams, and the vertical frame beams and the sub-frame beams together divide the installation space into a plurality of ventilation channels;

[0007] The primary and secondary efficiency filter components are detachably arranged at the ventilation channels.

[0008] In some optional embodiments, the outer frame includes a plurality of side frames, the plurality of side frames surround to form the outer frame, and adjacent side frames are detachably connected to each other.

[0009] In some optional embodiments, a plurality of first connecting structures are provided on the outer frame, a plurality of second connecting structures are provided on the vertical frame beam and the outer frame, a plurality of first locking members are provided on the vertical frame beam, the first locking members pass through the vertical frame beam and are then detachably connected to the corresponding first connecting structures, and a plurality of second locking members are provided on the sub-frame beam, the second locking members pass through the sub-frame beam and are then detachably connected to the corresponding second connecting structures.

[0010] In some optional embodiments, the first connecting structure and the second connecting structure both include a fixing member and a connecting member, the fixing member of the first connecting structure is locked to the outer frame by a first threaded member, the connecting member of the first connecting structure is locked to the fixing member and the outer frame by a second threaded member, the fixing member of the second connecting structure is locked to the outer frame or the vertical frame beam by a third threaded member, and the connecting member of the second connecting structure is locked to the fixing member and the outer frame, or to the fixing member and the vertical frame beam, by a fourth threaded member;

[0011] The first locking member passes through the vertical frame beam and is then detachably connected to the connecting member of the first connecting structure. The second locking member passes through the sub-frame beam and is then detachably connected to the connecting member of the second connecting structure.

[0012] In some optional embodiments, a walking space for people to pass through is arranged between one of the vertical frame beams and the outer frame or between two adjacent vertical frame beams, and the sub-frame beam located in the walking space is detachably locked to the vertical frame beam and / or the outer frame by a second locking member, and the second locking member is provided with an operating handle.

[0013] In some optional embodiments, the outer frame and / or the vertical frame beam and / or the sub-frame beam are provided with a supporting hem located in the ventilation channel, and the primary and secondary efficiency filter assembly is provided in the ventilation channel and abuts against the supporting hem;

[0014] A limiting mechanism is movably provided on the outer frame and / or the vertical frame beam and / or the sub-frame beam, and the limiting mechanism detachably installs the primary and secondary efficiency filter assembly in the ventilation channel.

[0015] In some optional embodiments, the primary and secondary efficiency filter assembly includes a primary filter and a secondary efficiency filter, the secondary efficiency filter is arranged in the ventilation channel and abuts against the supporting fold, part of the secondary efficiency filter extends out of the ventilation channel, the primary filter is arranged in the ventilation channel, and the secondary efficiency filter is pressed toward the supporting fold, and the limiting mechanism abuts against the side of the primary filter away from the secondary efficiency filter, so that the primary filter and the secondary efficiency filter can be detachably installed in the ventilation channel.

[0016] Another embodiment of the present invention provides a combined wind cabinet, comprising: a first combined section, a second combined section, a third combined section and a primary and secondary efficiency filter device as described above, wherein the first combined section, the second combined section and the third combined section are detachably connected in sequence, the first combined section, the second combined section and the third combined section together form an air duct, the outer frame of the primary and secondary efficiency filter device is detachably connected to the inner wall of the first combined section and is located in the air duct, the second combined section is provided with a functional component located in the air duct, the third combined section is provided with a fan located in the air duct, an inspection port connected to the air duct is provided on one side of the first combined section, an inspection door is movably provided in the inspection port, and the inspection port is connected to the air duct.

[0017] In some optional embodiments, the air duct has a return air inlet, a fresh air inlet and an air outlet, and the return air inlet, the fresh air inlet and the inspection port are all located on a side of the primary and secondary efficiency filtering device away from the air outlet.

[0018] In some optional embodiments, the first assembly segment and the second assembly segment are detachably connected via a first connecting component, and the second assembly segment and the third assembly segment are detachably connected via a second connecting component. Both the first connecting component and the second connecting component include a threaded structure and two connecting plates. The two connecting plates of the first connecting component are respectively connected to the first assembly segment and the second assembly segment and are located in the air duct. The two connecting plates of the second connecting component are respectively connected to the second assembly segment and the third assembly segment and are located in the air duct. The two connecting plates are detachably connected via the threaded structure.

[0019] Compared with the prior art, the primary and secondary efficiency filter device of the present invention has a reasonable structural design, simple process, and easy splicing. After being installed in the combined wind cabinet, personnel can enter the combined section by disassembling and assembling the primary and secondary efficiency filter components, horizontal frame beams or vertical frame beams, and then pass through the primary and secondary efficiency filter device to enter other combined sections, thereby reducing the number of inspection doors, and preventing external dust from entering the combined section through the gap between the inspection door and the inspection port, and also preventing air leakage due to the gap, which reduces the air pressure in the combined section.

[0020] In order to more clearly understand the present invention, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a combined wind cabinet according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of a combined wind cabinet according to an embodiment of the present invention;

[0023] Figure 3 A sectional view of one side of a combined wind cabinet according to an embodiment of the present invention;

[0024] Figure 4 This is a structural diagram of a primary and secondary efficiency filtration device according to an embodiment of the present invention;

[0025] Figure 5 An exploded view of a frame according to an embodiment of the present invention;

[0026] Figure 6 A partial cross-sectional view of a frame according to an embodiment of the present invention;

[0027] Figure 7 for Figure 6 An enlarged view of point A is shown;

[0028] Figure 8 for Figure 6 An enlarged view of point B is shown;

[0029] Figure 9 for Figure 5 An enlarged view of point C is shown;

[0030] Figure 10 This is an exploded view of a primary and secondary efficiency filtration device according to one embodiment of the present invention;

[0031] Figure 11 for Figure 10 An enlarged view of point D is shown;

[0032] Figure 12This is a cross-sectional view of the other side of the combined wind cabinet according to one embodiment of the present invention;

[0033] Figure 13 for Figure 12 An enlarged view of E is shown.

[0034] Description of reference numerals:

[0035] 10. First assembly section; 11. Inspection port; 12. Inspection door; 13. Return air port; 14. Fresh air port; 20. Second assembly section; 21. Functional component; 30. Third assembly section; 31. Fan; 40. Primary and secondary efficiency filter device; 50. Frame; 51. Outer frame; 512. Side frame; 512. First connecting structure; 5121. Fixing member; 5122. Connecting member; 513. First locking member; 52. Vertical frame beam; 521. Second connecting structure; 53. Horizontal frame beam; 531. Sub-frame beam; 532. Second locking member; 533. Operating handle; 54. Ventilation duct; 55. Walking space; 56. Support folding edge; 57. Limiting mechanism; 60. Primary and secondary efficiency filter assembly; 61. Primary efficiency filter; 62. Second efficiency filter; 70. First connecting assembly; 71. Threaded structure; 72. Connecting plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] In the description of this utility model, reference to the terms "one embodiment," "some optional implementations," or "some optional embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0040] See also Figure 1 and Figure 2 An embodiment of the present invention provides a combined wind cabinet, including: a first combined section 10, a second combined section 20, a third combined section 30 and a primary and secondary efficiency filtering device 40.

[0041] See also Figure 3 The first assembly section 10, the second assembly section 20 and the third assembly section 30 are detachably connected in sequence. The first assembly section 10, the second assembly section 20 and the third assembly section 30 are together formed to form an air duct. The outer frame 51 of the primary and secondary efficiency filter device 40 is detachably connected to the inner wall of the first assembly section 10 through a threaded structure 71, a snap structure or other suitable structure. The primary and secondary efficiency filter device 40 is located in the air duct, and a functional component 21 located in the air duct is provided in the second assembly section 20. A fan 31 located in the air duct is provided in the third assembly section 30. An inspection port 11 connected to the air duct is provided on one side of the first assembly section 10, and an inspection door 12 is movably provided in the inspection port 11, and the inspection port 11 is connected to the air duct. The primary and secondary efficiency filter device 40 is used to filter the air, and the functional component 21 can be one or more of a heat exchange component, a humidification component, and a purification component. The heat exchange component is used to adjust the air temperature, the humidification component is used to adjust the air humidity, and the purification component is used to purify the air. Of course, the functional component 21 can also be other components for processing the air, and is not limited to the above examples.

[0042] See also Figures 4 to 6The primary and secondary efficiency filter device 40 includes a frame 50 and a plurality of primary and secondary efficiency filter components 60 . The frame 50 includes an outer frame 51, multiple vertical frame beams 52 and multiple horizontal frame beams 53. The outer frame 51 is surrounded to form an installation space. The multiple vertical frame beams 52 are arranged side by side in the installation space. The two ends of the vertical frame beams 52 are respectively detachably connected to the outer frame 51. The multiple horizontal frame beams 53 are arranged side by side in the installation space. The vertical frame beams 52 and the horizontal frame beams 53 are staggered with each other. The horizontal frame beams 53 include multiple sub-frame beams 531. The multiple vertical frame beams 52 and the multiple sub-frame beams 531 of the same horizontal frame beam 53 are arranged at intervals along the arrangement direction of the vertical frame beams 52. The two ends of the sub-frame beams 531 located at the starting end and the end end are respectively detachably connected to the vertical frame beams 52 and the outer frame 51. The two ends of the sub-frame beams 531 located between adjacent vertical frame beams 52 are respectively detachably connected to adjacent vertical frame beams 52. The vertical frame beams 52 and the sub-frame beams 531 together divide the installation space into multiple ventilation channels 54; the primary and secondary efficiency filter components 60 are correspondingly detachably arranged at the ventilation channels 54.

[0043] The outer frame 51, vertical frame beams 52 and horizontal frame beams 53 of the primary and secondary efficiency filter device 40 can better separate multiple ventilation channels 54, thereby facilitating the installation of the primary and secondary efficiency filter assembly 60. The structural design is reasonable, the outer frame 51, vertical frame beams 52 and horizontal frame beams 53 are simple to prepare and easy to splice. Moreover, after the primary and secondary efficiency filter device 40 is installed in the first combination section 10 of the modular wind cabinet, at least part of the primary and secondary efficiency filter assembly 60 and at least part of the sub-frame beams 531 can be removed according to the walking needs of the staff, so that the staff can pass between the vertical frame beams 52 and the outer frame 51 or between the two vertical frame beams 52, and then the staff can pass through the primary and secondary efficiency filter device 40 to enter the second combination section 20. Of course, according to the needs of the staff, at least part of the vertical frame beams 52 can also be removed, so that the staff can pass through the primary and secondary efficiency filter device 40 to enter the second combination section 20 and / or the third combination section 30, thereby facilitating the maintenance of the functional components in the second combination section 20 and / or the third combination section 30. Other functional sections may be added to the side of the third assembly section 30 away from the second assembly section 20 or between the third assembly section 30 and the second assembly section 20 according to actual needs. Workers can enter the third assembly section 30 or other functional sections from the second assembly section 20. According to actual needs, an inspection port 11 and an inspection door 12 may also be provided on the third assembly section 30 to prevent functional components in the second assembly section 20, the third assembly section 30 or other functional sections from obstructing the passage of workers and preventing them from moving to designated positions.

[0044] Since the staff can enter the second combination section 20 from the first combination section 10, the inspection door 12 of the second combination section 20 is omitted, or the arrangement of the inspection door 12 of the first combination section 10 located on the side of the primary and secondary efficiency filter device 40 close to the second combination section 20 is omitted, thereby preventing external dust from entering the second combination section 20 through the gap between the inspection door 12 and the inspection port 11, thereby avoiding contamination of the air in the combined wind cabinet, and also avoiding air leakage due to the gap, which reduces the air pressure in the combined wind cabinet. In addition, the cost can be reduced by eliminating the inspection door 12.

[0045] In some optional embodiments, the outer frame 51 includes a plurality of side frames 512. The plurality of side frames surround the outer frame 51, and adjacent side frames are detachably connected. The outer frame 51 is detachably designed to facilitate transportation. Adjacent side frames 512 can be detachably connected by bolts.

[0046] See also Figure 7 and Figure 8 In some optional embodiments, the outer frame 51 is provided with a plurality of first connecting structures 512, the vertical frame beams 52 and the outer frame 51 are provided with a plurality of second connecting structures 521, the vertical frame beams 52 are provided with a plurality of first locking members 513, the first locking members 513 pass through the vertical frame beams 52 and are then detachably connected to the corresponding first connecting structures 512, and the sub-frame beams 531 are provided with a plurality of second locking members 532, the second locking members 532 pass through the sub-frame beams 531 and are then detachably connected to the corresponding second connecting structures 521, thereby facilitating the installation of the vertical frame beams 52 and the sub-frame beams 531. In this embodiment, the first locking members 513 and the second locking members 532 are bolts.

[0047] See also Figures 9 to 11The specific structures of the first connecting structure 512 and the second connecting structure 521 can be designed according to actual needs. For example, in some optional embodiments, the first connecting structure 512 and the second connecting structure 521 both include a fixing member 5121 and a connecting member 5122. The fixing member 5121 of the first connecting structure 512 is locked on the outer frame 51 by a first screw member, and the connecting member 5122 of the first connecting structure 512 is locked on the fixing member 5121 and the outer frame 51 by a second screw member. The fixing member 5121 of the second connecting structure 521 is fixed to the outer frame 51. The first connecting structure 512 and the second connecting structure 521 are designed to be detachable, so as to simplify the structure of the outer frame 51, the vertical frame beam 52 and the horizontal frame beam 53. It is only necessary to design holes for the screws to pass through in the outer frame 51, the vertical frame beam 52 and the horizontal frame beam 53. The first connecting structure 512 and the second connecting structure 521 are designed to be detachable, so as to simplify the structure of the outer frame 51, the vertical frame beam 52 and the horizontal frame beam 53. It is only necessary to design holes for the screws to pass through in the outer frame 51, the vertical frame beam 52 and the horizontal frame beam 53. The more complex connection functions are realized by the first connecting structure 512 and the second connecting structure 521. In this embodiment, the first threaded member, the second threaded member, the third threaded member and the fourth threaded member may be bolts.

[0048] See also Figure 10 In some optional embodiments, a walking space 55 for workers to pass through is provided between one vertical frame beam 52 and the outer frame 51, or between two adjacent vertical frame beams 52. The sub-frame beam 531 located within the walking space 55 is detachably locked to the vertical frame beam 52 and / or the outer frame 51 via a second locking member 532. The second locking member 532 is provided with an operating handle 533. In this embodiment, the second locking member 532 located within the walking space 55 is provided with an operating handle 533, while the second locking member 532 located outside the walking space 55 may not be provided with an operating handle 533. Workers can twist the second locking member 532 using the operating handle 533 to remove the sub-frame beam 531, which facilitates the worker's operation and eliminates the need to carry special disassembly tools.

[0049] In some optional embodiments, the outer frame 51 and / or the vertical frame beam 52 and / or the sub-frame beam 531 are provided with a supporting fold 56 located in the ventilation channel 54. The primary and secondary efficiency filter assembly 60 is disposed in the ventilation channel 54 and abuts against the supporting fold 56. The outer frame 51 and / or the vertical frame beam 52 and / or the sub-frame beam 531 are movably provided with a limiting mechanism 57, which detachably mounts the primary and secondary efficiency filter assembly 60 in the ventilation channel 54. By moving the limiting mechanism 57, the primary and secondary efficiency filter assembly 60 can be conveniently and quickly disassembled.

[0050] The specific structure of the primary and secondary efficiency filter assembly 60 can be designed according to actual needs. For example, in some optional embodiments, the primary and secondary efficiency filter assembly 60 includes a primary filter 61 and a secondary efficiency filter 62. The secondary efficiency filter 62 is arranged in the ventilation channel 54 and abuts on the support fold 56. Part of the secondary efficiency filter 62 extends out of the ventilation channel 54. The primary filter 61 is arranged in the ventilation channel 54 and presses the secondary efficiency filter 62 toward the support fold 56. The limiting mechanism 57 abuts on the side of the primary filter 61 away from the secondary efficiency filter 62. The limiting mechanism 57 cooperates with the support fold 56 to limit the primary filter 61 and the secondary efficiency filter 62 in the ventilation channel 54, so that the primary filter 61 and the secondary efficiency filter 62 can be detachably installed in the ventilation channel 54. When the primary and secondary efficiency filter assembly 60 needs to be removed, the limiting mechanism 57 is moved to release the restriction on the primary filter 61, and then the primary filter 61 and the secondary efficiency filter 62 can be taken out of the ventilation channel 54 in sequence. The overall disassembly and assembly process is relatively simple and easy to operate.

[0051] The limiting mechanism 57 can be designed according to actual needs. For example, the limiting mechanism 57 can be an elastic protrusion arranged on the outer frame 51 and / or the vertical frame beam 52 and / or the sub-frame beam 531. In this embodiment, the limiting mechanism 57 includes a pressure block and a butterfly screw. The butterfly screw removably installs the pressure block on the outer frame 51 and / or the vertical frame beam 52 and / or the sub-frame beam 531. The pressure block is pressed on the primary filter 61, so that the primary filter 61 and the secondary filter 62 are pressed toward the support fold 56 together.

[0052] In some optional embodiments, the air duct has a return air inlet 13, a fresh air inlet 14 and an air outlet. The fresh air inlet 14 is used to introduce fresh air. The return air inlet 13 is connected to the room. The return air inlet 13 is used to introduce indoor air. The air in the air duct is blown out from the air outlet driven by the fan 31. The return air inlet 13, the fresh air inlet 14 and the inspection port 11 are all located on the side of the primary and secondary efficiency filter device 40 away from the air outlet. Dust and other impurities entering the first combination section 10 from the fresh air inlet 14, the return air inlet 13 and the gap between the inspection port 11 and the inspection door 12 are all filtered by the primary and secondary efficiency filter assembly 60. The position of the inspection port 11 adopts the above-mentioned position arrangement method so that dust and other impurities entering from the gap between the inspection port 11 and the inspection door 12 can also be filtered by the primary and secondary efficiency filter assembly 60, thereby preventing dust and other impurities entering from the gap between the inspection port 11 and the inspection door 12 from entering the part of the air duct located between the primary and secondary efficiency filter device 40 and the air outlet.

[0053] See also Figure 12 and Figure 13 In some optional embodiments, the first assembly section 10 and the second assembly section 20 are detachably connected via a first connecting assembly 70, and the second assembly section 20 and the third assembly section 30 are detachably connected via a second connecting assembly. Both the first connecting assembly 70 and the second connecting assembly include a threaded structure 71 and two connecting plates. The two connecting plates of the first connecting assembly 70 are respectively connected to the first assembly section 10 and the second assembly section 20 and are respectively located within the air duct. The two connecting plates of the second connecting assembly are respectively connected to the second assembly section 20 and the third assembly section 30 and are respectively located within the air duct. The two connecting plates are detachably connected via the threaded structure 71. The first connecting assembly 70 and the second connecting assembly are installed in a built-in manner, which can prevent the first connecting assembly 70 and the second connecting assembly from affecting the aesthetics of the combined air hood and can also provide a certain degree of protection for the first connecting assembly 70 and the second connecting assembly, preventing the first connecting assembly 70 and the second connecting assembly from being corroded or damaged by the external environment.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A primary and secondary efficiency filtration device, characterized in that: include: Framework and multiple primary and secondary efficiency filtering components; The frame includes an outer frame, a plurality of vertical frame beams and a plurality of horizontal frame beams, the outer frame is surrounded to form an installation space, the plurality of vertical frame beams are arranged side by side in the installation space, the two ends of the vertical frame beams are respectively detachably connected to the outer frame, the plurality of horizontal frame beams are arranged side by side in the installation space, the vertical frame beams and the horizontal frame beams are staggered with each other, wherein the horizontal frame beam includes a plurality of sub-frame beams, the plurality of vertical frame beams and the plurality of sub-frame beams of the same horizontal frame beam are arranged at intervals along the arrangement direction of the vertical frame beams, the two ends of the sub-frame beams located at the starting end and the end end are respectively detachably connected to the vertical frame beam and the outer frame, the two ends of the sub-frame beams located between adjacent vertical frame beams are respectively detachably connected to adjacent vertical frame beams, and the vertical frame beams and the sub-frame beams together divide the installation space into a plurality of ventilation channels; The primary and secondary efficiency filter components are detachably arranged at the ventilation channels.

2. A primary and secondary efficiency filtration device according to claim 1, characterized in that: The outer frame includes a plurality of side frames, and the plurality of side frames surround and form the outer frame, and adjacent side frames are detachably connected.

3. A primary and secondary efficiency filtration device according to claim 1, characterized in that: A plurality of first connection structures are provided on the outer frame, a plurality of second connection structures are provided on the vertical frame beam and the outer frame, a plurality of first locking members are provided on the vertical frame beam, the first locking members pass through the vertical frame beam, and then are detachably connected to the first connection structures respectively, a plurality of second locking members are provided on the sub-frame beam, the second locking members pass through the sub-frame beam, and then are detachably connected to the second connection structures respectively.

4. A primary and secondary efficiency filtration device according to claim 3, characterized in that: The first connecting structure and the second connecting structure each include a fixing member and a connecting member, the fixing member of the first connecting structure is locked on the outer frame by a first threaded member, the connecting member of the first connecting structure is locked on the fixing member and the outer frame by a second threaded member, the fixing member of the second connecting structure is locked on the outer frame or the vertical frame beam by a third threaded member, and the connecting member of the second connecting structure is locked on the fixing member and the outer frame, or on the fixing member and the vertical frame beam, by a fourth threaded member; The first locking member passes through the vertical frame beam and is then detachably connected to the connecting member of the first connecting structure. The second locking member passes through the sub-frame beam and is then detachably connected to the connecting member of the second connecting structure.

5. A primary and secondary efficiency filtration device according to any one of claims 1 to 4, characterized in that: A walking space for people to pass through is arranged between one of the vertical frame beams and the outer frame, or between two adjacent vertical frame beams. The sub-frame beam located in the walking space is detachably locked to the vertical frame beam and / or the outer frame through a second locking member, and the second locking member is provided with an operating handle.

6. A primary and secondary efficiency filtration device according to any one of claims 1 to 4, characterized in that: The outer frame and / or the vertical frame beam and / or the sub-frame beam are provided with a supporting fold located in the ventilation channel, and the primary and secondary efficiency filter assembly is provided in the ventilation channel and abuts against the supporting fold; A limiting mechanism is movably provided on the outer frame and / or the vertical frame beam and / or the sub-frame beam, and the limiting mechanism detachably installs the primary and secondary efficiency filter assembly in the ventilation channel.

7. A primary and secondary efficiency filtration device according to claim 6, characterized in that: The primary and secondary efficiency filter assembly includes a primary filter and a secondary efficiency filter. The secondary efficiency filter is arranged in the ventilation channel and abuts against the supporting fold. Part of the secondary efficiency filter extends out of the ventilation channel. The primary filter is arranged in the ventilation channel and presses the secondary efficiency filter toward the supporting fold. The limiting mechanism abuts against the side of the primary filter away from the secondary efficiency filter so that the primary filter and the secondary efficiency filter can be detachably installed in the ventilation channel.

8. A combined wind cabinet, characterized in that: include: A first combination section, a second combination section, a third combination section and a primary and secondary efficiency filter device as described in any one of claims 1 to 7, wherein the first combination section, the second combination section and the third combination section are detachably connected in sequence, the first combination section, the second combination section and the third combination section together form an air duct, the outer frame of the primary and secondary efficiency filter device is detachably connected to the inner wall of the first combination section and is located in the air duct, the second combination section is provided with a functional component located in the air duct, the third combination section is provided with a fan located in the air duct, an inspection port connected to the air duct is provided on one side of the first combination section, an inspection door is movably provided in the inspection port, and the inspection port is connected to the air duct.

9. The combined wind cabinet according to claim 8, characterized in that: The air duct has a return air inlet, a fresh air inlet and an air outlet. The return air inlet, the fresh air inlet and the inspection port are all located on a side of the primary and secondary efficiency filtering device away from the air outlet.

10. The combined wind cabinet according to claim 8, characterized in that: The first assembly segment and the second assembly segment are detachably connected via a first connecting assembly, and the second assembly segment and the third assembly segment are detachably connected via a second connecting assembly. Both the first connecting assembly and the second connecting assembly include a threaded structure and two connecting plates. The two connecting plates of the first connecting assembly are respectively connected to the first assembly segment and the second assembly segment and are located in the air duct. The two connecting plates of the second connecting assembly are respectively connected to the second assembly segment and the third assembly segment and are located in the air duct. The two connecting plates are detachably connected via the threaded structure.

Images