Wet film fresh air equipment

Abstract

The utility model discloses a wet film fresh air equipment relates to fresh air equipment assembly technical field, the wet film fresh air equipment includes intake duct, wet film main part, filter subassembly, connecting structure and fixing structure, wherein the intake duct is installed in the wall, the wet film main part is provided in the intake duct inner cavity, filter subassembly includes filter plate, connecting structure and fixing structure, the filter plate is arranged in the air inlet pipeline, the connecting structure comprises a top plate, the top plate is arranged at the top of the filter plate, the fixing structure comprises two fixing plates, two limiting rods and a plurality of screwing pieces, the two fixing plates are arranged on the left side and the right side of the air inlet pipeline respectively, and elastic abutting structures are arranged between the fixing plates and the top plate; the limiting rods are arranged at the tops of the fixing plates correspondingly and extend upwards, the limiting rods partially penetrate through the two side ends of the top plate, threads are arranged on the peripheral sides of the limiting rods, and the multiple threaded connection pieces are in threaded connection to the tops of the limiting rods correspondingly. Through cooperation of the limiting rod and the screw joint piece, locking or releasing of the top plate can be achieved only through manual screwing.

Description

Technical Field

[0001] This utility model relates to the technical field of wet membrane fresh air equipment, and in particular to a wet membrane fresh air equipment. Background Technology

[0002] In modern building environments, air quality and humidity control are crucial for the health and comfort of residents and staff. As an innovative air handling technology, wet membrane ventilation systems are mainly used to cool, humidify, or recover energy (total heat exchange) the fresh air introduced outdoors. Through its unique working principle and superior performance characteristics, it provides an efficient, energy-saving, and healthy regulation solution for the indoor environment.

[0003] During the operation of wet membrane fresh air equipment, filters are used to filter the incoming air. Therefore, after a period of use, the filters need to be replaced or cleaned. In order to reduce costs and facilitate the disassembly and assembly of filters, existing equipment is mostly installed by multiple bolts and nuts. However, bolts are prone to stripping and damage during disassembly and assembly, and tools are also required to complete the disassembly and assembly work. Utility Model Content

[0004] The main purpose of this utility model is to propose a wet membrane fresh air device that allows for convenient and quick disassembly and assembly of the filter screen without the aid of tools.

[0005] To achieve the above objectives, the wet film fresh air device proposed in this utility model includes:

[0006] An air inlet duct is installed in the wall and has an installation hole at the top;

[0007] The wet film body is disposed inside the air inlet duct;

[0008] A filter assembly includes a filter plate disposed inside the air inlet duct and passing through the mounting hole;

[0009] The connecting structure includes a top plate disposed on top of the filter plate and covering the mounting hole for easy placement and removal of the filter plate; the two ends of the top plate extend to the left and right sides of the air inlet duct, respectively; and...

[0010] The fixing structure includes two fixing plates, two limiting rods, and multiple screw connectors. The two fixing plates are respectively disposed on the left and right sides of the air inlet duct, and an elastic abutment structure is provided between the fixing plates and the top plate. Each limiting rod is disposed on the top of each fixing plate and extends upward. The limiting rod portion passes through both ends of the top plate, and the periphery of the limiting rod is provided with threads. The multiple screw connectors are respectively threaded to the top of each limiting rod to prevent the top plate from detaching from the limiting rod.

[0011] Preferably, the fixing structure further includes:

[0012] Two sleeves are each disposed at the bottom of the top plate, and each sleeve is fitted with one of the two limiting rods; and,

[0013] Two limiting rings are respectively set at the bottom end of each sleeve.

[0014] Preferably, the elastic abutment structure includes a first elastic member, one end of which abuts against the top of the fixing plate and the other end of which abuts against the bottom of the limiting ring.

[0015] Preferably, the connection structure further includes:

[0016] Multiple mounting blocks are disposed on the top of the filter plate; and,

[0017] Multiple mounting rails, with internal movable settings for the mounting rails.

[0018] Preferably, the mounting block includes a first platform and a second platform, the first platform being disposed between the filter plate and the second platform, and the width of the first platform being smaller than the width of the second platform to restrict the mounting block from disengaging downward from the mounting rail.

[0019] Preferably, the top of the mounting block has a limiting groove, the top of the mounting rail has a through hole, and the top of the top plate has at least one limiting component. The limiting component includes multiple insert rods, which are inserted into the limiting groove and pass through the through hole to prevent the mounting block from detaching from the mounting rail.

[0020] Preferably, the limiting component further includes:

[0021] The housing is located on top of the top plate;

[0022] Multiple second elastic elements, one end of each second elastic element being disposed on the top wall of the inner cavity of the box;

[0023] Multiple limiting plates are respectively disposed at the other end of each of the second elastic members; and,

[0024] Multiple pull rods are respectively installed on the top of each of the limiting plates and penetrate through the box body;

[0025] Multiple insertion rods are respectively disposed at the bottom of each of the limiting plates and penetrate the top plate.

[0026] Preferably, the top ends of the plurality of pull rods are provided with connecting plates to drive the plurality of pull rods to move together simultaneously.

[0027] Preferably, the inner cavity of the air inlet duct is provided with two guide plate groups, each guide plate group includes two guide plates, and the two guide plates are respectively disposed on the left and right side walls of the inner cavity of the air inlet duct, and the filter plate is disposed between the two guide plate groups.

[0028] Preferably, a sealing element is provided at the bottom of the top plate to seal the gap between the top plate and the mounting hole.

[0029] In the technical solution provided by this utility model, the fixing structure includes two fixing plates, two limiting rods, and multiple screw connectors. The two fixing plates are respectively disposed on the left and right sides of the air inlet duct, and an elastic abutment structure is provided between the fixing plates and the top plate. Each limiting rod is disposed on the top of each fixing plate and extends upward. The limiting rod portion passes through both ends of the top plate, and the periphery of the limiting rod is provided with threads. Multiple screw connectors are respectively threaded to the top of each limiting rod to prevent the top plate from detaching from the limiting rod. Through the cooperation of the limiting rod and the screw connectors, the top plate can be locked or released by manual tightening without additional tools. The elastic abutment structure provides pre-tightening force to prevent the filter plate from loosening under vibration, while reducing the dependence on the thread fit accuracy and reducing the risk of stripping. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 A perspective view of an embodiment of the wet film fresh air device provided by this utility model;

[0032] Figure 2 for Figure 1 Rear view schematic diagram of a medium-humidity membrane fresh air system;

[0033] Figure 3 for Figure 1 Cross-sectional view of the central air intake duct;

[0034] Figure 4 for Figure 3 Schematic diagram of the connection structure between the middle filter plate and the top plate;

[0035] Figure 5 for Figure 4 A magnified schematic diagram of part A in the middle.

[0036] Explanation of icon numbers:

[0037] 100. Wet film fresh air equipment; 1. Air inlet duct; 2. Fixed structure; 21. Limiting rod; 22. Fixing plate; 23. Elastic abutment structure; 24. Limiting ring; 25. Sleeve; 26. Threaded connector; 3. Connecting structure; 31. Top plate; 32. Mounting rail; 33. Mounting block; 4. Filter assembly; 41. Filter plate; 5. Guide plate; 6. Limiting assembly; 61. Connecting plate; 62. Housing; 63. Second elastic element; 64. Limiting plate; 65. Insert rod; 7. Wet film body.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] This utility model provides a wet film fresh air device 100. Figures 1 to 5 An embodiment of the wet film fresh air device 100 provided by this utility model.

[0043] Please refer to the following: Figures 1 to 2The wet membrane fresh air system 100 includes an air inlet duct 1, a wet membrane body 7, a filter assembly 4, a connecting structure 3, and a fixing structure 2. The air inlet duct 1 is installed on the wall and has an installation hole at its top. The wet membrane body 7 is disposed within the cavity of the air inlet duct 1. The filter assembly 4 includes a filter plate 41, which is disposed within the air inlet duct 1 and extends through the installation hole. The connecting structure 3 includes a top plate 31, which is disposed on top of the filter plate 41 and covers the installation hole for easy placement and removal of the filter plate 41. The two ends of the top plate 31 extend to the left and right sides of the air inlet duct 1, respectively. On the outside, the fixing structure 2 includes two fixing plates 22, two limiting rods 21, and multiple screw connectors 26. The two fixing plates 22 are respectively disposed on the left and right sides of the air inlet duct 1, and an elastic abutment structure 23 is provided between the fixing plates 22 and the top plate 31. Each limiting rod 21 is disposed on the top of each fixing plate 22 and extends upward. The limiting rod 21 partially penetrates both ends of the top plate 31, and the periphery of the limiting rod 21 is provided with threads. Multiple screw connectors 26 are respectively threaded to the top of each limiting rod 21 to prevent the top plate 31 from detaching from the limiting rod 21.

[0044] The air inlet duct 1 is a channel for guiding external air into the equipment. It can be made of metal or plastic, and the mounting hole at its top is used to accommodate the filter plate 41. The wet membrane body 7 is a material with moisture absorption and heat exchange functions, such as a hydrophilic polymer material, used to regulate air humidity and temperature. The filter plate 41 in the filter assembly 4 can adopt a multi-layer filter structure to intercept particulate matter in the air. The top plate 31 of the connecting structure 3 can be made of metal plate or engineering plastic, covering the mounting hole and providing support for the filter plate 41. The fixing plate 22 of the fixing structure 2 can be welded or bolted to both sides of the air inlet duct 1. The limiting rod 21 can be a metal rod with external threads, and the screw connection 26 can be a nut or a knob with internal threads. The top plate 31 can be fixed or released by turning.

[0045] The filter plate 41 is inserted into the inner cavity of the air inlet duct 1 through the mounting hole. The top plate 31 covers the mounting hole and extends to both sides of the duct. The fixing plate 22 is installed on both sides of the duct, and the limiting rod 21 is vertically fixed to the top of the fixing plate 22 and passes through both ends of the top plate 31. The elastic abutment structure 23 maintains a pre-tightening force between the top plate 31 and the fixing plate 22. After the screw connector 26 is screwed into the top of the limiting rod 21, it presses the top plate 31 to restrict its vertical movement. When it is necessary to remove the filter plate 41, loosening the screw connector 26 will release the constraint on the top plate 31, and the top plate 31 can be lifted upwards along with the filter plate 41 to complete the removal. During installation, the operation is reversed: after inserting the filter plate 41, the top plate 31 is pressed down and the screw connector 26 is tightened to complete the fixation.

[0046] Therefore, in the technical solution provided by this utility model, the fixing structure 2 includes two fixing plates 22, two limiting rods 21, and multiple screw connectors 26. The two fixing plates 22 are respectively disposed on the left and right sides of the air inlet duct 1, and an elastic abutment structure 23 is provided between the fixing plates 22 and the top plate 31. Each limiting rod 21 is disposed on the top of each fixing plate 22 and extends upward. The limiting rod 21 partially penetrates both ends of the top plate 31, and the periphery of the limiting rod 21 is provided with threads. Multiple screw connectors 26 are respectively threaded to the top of each limiting rod 21 to restrict the top plate 31 from detaching from the limiting rod 21. Through the cooperation of the limiting rod 21 and the screw connectors 26, the top plate 31 can be locked or released by manual screwing without additional tools. The elastic abutment structure 23 provides pre-tightening force to prevent the filter plate 41 from loosening in a vibration environment, while reducing the dependence on the thread fit accuracy and reducing the risk of stripping.

[0047] In order to ensure the stable guidance and automatic positioning of the top plate 31 during the assembly and disassembly of the filter plate 41 and to eliminate the risk of misalignment in traditional bolt connections, it is necessary to limit the position of the limit rod 21.

[0048] Specifically, in the embodiments of this utility model, the fixing structure 2 further includes two sleeves 25 and two limiting rings 24. The two sleeves 25 are both disposed at the bottom of the top plate 31 and are respectively fitted with two limiting rods 21. The two limiting rings 24 are respectively disposed at the bottom side end of each sleeve 25.

[0049] Sleeve 25 refers to a tubular component with a hollow structure, which can be made of metal or engineering plastic. Its inner diameter is slightly larger than the outer diameter of the limiting rod 21 to achieve a sliding fit. The function of sleeve 25 is to provide an axial guide path for the limiting rod 21 to prevent the top plate 31 from shifting during vertical movement. Limiting ring 24 refers to an annular component fixed to the bottom end of sleeve 25. It can be fixed by welding or threaded connection. Its outer diameter is larger than the outer diameter of sleeve 25. The function of limiting ring 24 is to limit the downward stroke of sleeve 25 on limiting rod 21 to prevent the elastic abutment structure 23 from failing due to excessive downward pressure on top plate 31.

[0050] When the filter plate 41 needs to be disassembled, the operator loosens the screw connector 26 to allow the top plate 31 to move vertically. At this time, the top plate 31 drives the sleeve 25 to rise axially along the limiting rod 21, and the limiting ring 24 moves synchronously with the sleeve 25. Since there is an elastic abutment structure 23 between the limiting ring 24 and the fixed plate 22, the top plate 31 can be stably held in the raised position under the action of elastic force. When the filter plate 41 is maintained, the top plate 31 is pressed down to the sealing position of the mounting hole. At this time, the limiting ring 24 contacts the top of the fixed plate 22 to form a hard limit, ensuring that the top plate 31 is accurately reset.

[0051] Furthermore, the elastic abutment structure 23 includes a first elastic element, one end of which abuts against the top of the fixing plate 22, and the other end of which abuts against the bottom of the limiting ring 24.

[0052] The first elastic element refers to the component used to provide elastic support. Specifically, it can be implemented by a helical spring or an elastic rubber block. Its function is to buffer the contact pressure between the top plate 31 and the fixed plate 22 through elastic deformation, and to provide a reverse force when the filter plate 41 is disassembled. When the top plate 31 is subjected to downward pressure, the sleeve 25 moves down along the limiting rod 21 and compresses the first elastic element. At this time, the limiting ring 24 contacts the bottom end of the sleeve 25 to limit the downward movement distance. When the pressure is released, the first elastic element pushes the sleeve 25 up through elastic restoring force, so that the top plate 31 is reset. This structure realizes the adjustable fixation of the top plate 31 through elastic deformation, avoiding the difficulty of disassembly and assembly caused by rigid connection.

[0053] When the filter plate 41 is damaged, it needs to be replaced. However, the top plate 31 may not be damaged when the filter plate 41 is damaged, which would be wasteful. Therefore, the top plate 31 and the filter plate 41 need to be disassembled. Specifically, in the embodiment of this utility model, the connecting structure 3 also includes multiple mounting blocks 33 and multiple mounting rails. The multiple mounting blocks 33 are disposed on the top of the filter plate 41, and the multiple mounting rails 32 are internally movable.

[0054] The mounting block refers to a protruding structure fixedly connected to the top of the filter plate 41. It can be made of metal or engineering plastic and is rigidly connected to the filter plate 41 by injection molding or welding. This structure is used to form a sliding fit between the filter plate 41 and the mounting rail 32, so that the filter plate 41 can move axially along the mounting rail 32. The mounting rail 32 refers to a movable guide component set inside the equipment. It can be made of aluminum alloy profile to form a track structure with T-slots. Its internal cavity size matches the shape of the mounting block 33, allowing the mounting block 33 to slide freely along the length of the track. This structure ensures that the filter plate 41 remains stably aligned during the assembly and disassembly process by constraining the movement trajectory of the mounting block 33.

[0055] When the filter plate 41 needs to be replaced, the operator can directly pull the filter plate 41 along the axial direction of the mounting rail 32, so that the mounting block 33 slides in the rail until it is completely detached. During the installation process, the mounting block 33 is aligned with the opening of the mounting rail 32 and pushed horizontally until the filter plate 41 reaches the predetermined working position. This process does not require the use of tools or fasteners, and the positioning can be completed by sliding fit. The mounting rail 32 can be equipped with anti-detachment protrusions or limit blocks, such as rubber buffer blocks at the end of the rail, to prevent the mounting block 33 from accidentally slipping off.

[0056] Furthermore, the mounting block 33 includes a first platform and a second platform. The first platform is disposed between the filter plate 41 and the second platform. The width of the first platform is smaller than the width of the second platform to restrict the mounting block 33 from disengaging downward from the mounting rail 32.

[0057] The first platform refers to the support structure directly connected to the filter plate 41. Specifically, it can be implemented using a stepped boss structure. Its width is smaller than that of the second platform to form a lateral limiting surface. The second platform refers to the extension structure located above the first platform. Specifically, it can be implemented using a rectangular block structure. Its width is larger than that of the first platform to form a blocking part. The difference in width between the first platform and the second platform makes it impossible for the second platform to pass through the opening of the mounting rail 32 when the mounting block 33 moves within the mounting rail 32, thereby restricting the mounting block 33 from detaching downwards.

[0058] The mounting block 33 forms a limiting structure through the width difference between the first and second platforms. When the mounting block 33 is inserted into the mounting rail 32, the second platform is blocked by the side wall of the mounting rail 32 and cannot move further down. At this time, the first platform and the inner wall of the mounting rail 32 form a clearance fit, allowing the mounting block 33 to slide in the horizontal direction. When it needs to be disassembled, the mounting block 33 can be removed simply by sliding it along the mounting rail 32 to the open end, without the need for tools or disassembling fasteners.

[0059] The process of fixing and releasing the filter plate 41 is simplified, and the operation can be completed without additional tools. Specifically, in the embodiment of this utility model, the top of the mounting block 33 is provided with a limiting groove, the top of the mounting rail 32 is provided with a through hole, and the top of the top plate 31 is provided with at least one limiting component 6. The limiting component 6 includes multiple insert rods 65, which are inserted into the limiting groove and pass through the through hole to prevent the mounting block 33 from detaching from the mounting rail 32.

[0060] The limiting groove refers to the groove structure opened on the top of the mounting block 33, which can be implemented as a rectangular or circular groove. It is used to cooperate with the insertion rod 65 to form a limiting function and prevent the mounting block 33 from being displaced vertically within the mounting rail 32. The through hole refers to the through hole opened on the top of the mounting rail 32, which can be implemented as a circular or square hole structure. It is used to allow the insertion rod 65 to pass through and extend into the limiting groove on the top of the mounting block 33, thereby achieving locking between the mounting block 33 and the mounting rail 32. The limiting component 6 refers to the fixing mechanism set on the top of the top plate 31. It can be implemented as a mechanical linkage structure including the insertion rod 65. By interlocking the insertion rod 65 with the limiting groove, the range of motion of the mounting block 33 within the mounting rail 32 is limited, ensuring the stability of the filter plate 41 after installation. The insertion rod 65 refers to the rod-shaped component in the limiting component 6 used to insert into the limiting groove. It can be made of metal or high-strength plastic material, and its diameter matches the size of the limiting groove and the through hole. The vertical movement of the insertion rod 65 achieves the rapid locking or releasing of the mounting block 33.

[0061] The mounting block 33, through the cooperation of the limiting groove and the insertion rod 65, can slide horizontally within the mounting rail 32. When the filter plate 41 needs to be installed, the mounting block 33 is pushed into the predetermined position along the mounting rail 32. At this time, the insertion rod 65 automatically inserts into the limiting groove and passes through the through hole under the action of gravity or elastic element, thereby restricting the vertical movement of the mounting block 33. When the filter plate 41 needs to be disassembled, the insertion rod 65 can be pulled out from the limiting groove by manual or mechanical drive, thereby releasing the constraint on the mounting block 33 and realizing the quick removal and placement of the filter plate 41.

[0062] Furthermore, the limiting component 6 also includes a housing 62, a plurality of second elastic elements 63, a plurality of limiting plates 64, and a plurality of pull rods. The housing 62 is disposed on the top of the top plate 31. One end of each of the second elastic elements 63 is disposed on the top wall of the inner cavity of the housing 62. The plurality of limiting plates 64 are respectively disposed on the other end of each of the second elastic elements 63. The plurality of pull rods are respectively disposed on the top of each of the limiting plates 64 and penetrate the housing 62. The plurality of insert rods 65 are respectively disposed on the bottom of each of the limiting plates 64 and penetrate the top plate 31.

[0063] The housing 62 refers to the shell structure used to house the second elastic element 63, the limiting plate 64, and the pull rod. It can be made of metal or plastic and is used to protect and position the internal components. The second elastic element 63 refers to the element that provides elastic restoring force. It can be a helical spring or an elastic rubber block and is used to automatically reset after the insertion rod 65 is disengaged from the limiting groove. The limiting plate 64 refers to the transition component connecting the insertion rod 65 and the second elastic element 63. It can be made of stamped steel plate or injection molded part and is used to transmit elastic force and maintain the vertical movement trajectory of the insertion rod 65. The pull rod refers to the rod-shaped component for manual operation. It can be made of metal or plastic and its top can be equipped with a connecting plate 61 to achieve synchronous control. The insertion rod 65 refers to the columnar component that is inserted into the limiting groove. It can be made of stainless steel or hard plastic and its end can be designed to be tapered to facilitate alignment with the limiting groove.

[0064] When the filter plate 41 needs to be disassembled, the pull rod is pulled upward to drive the limiting plate 64 to compress the second elastic element 63, so that the insertion rod 65 is removed from the limiting groove at the top of the mounting block 33. At this time, the mounting block 33 can slide freely along the mounting rail 32, thereby realizing the quick removal of the filter plate 41. During the installation process, after the filter plate 41 is pushed into the mounting rail 32, the pull rod is released, the second elastic element 63 pushes the limiting plate 64 to reset, and the insertion rod 65 automatically inserts into the limiting groove to complete the locking. During this process, no tools are needed, and the insertion rod 65 can be unlocked synchronously by a single lifting action.

[0065] Furthermore, a connecting plate 61 is provided at the top of each of the multiple pull rods to drive the multiple pull rods to move together simultaneously.

[0066] The connecting plate 61 is a plate-like structure that connects the tops of multiple tie rods. It can be made of metal or plastic and fixed by welding or bolts. Its function is to control the synchronous movement of multiple tie rods through a single operating point, avoiding the tedious adjustment of each one. The connecting plate 61 is fixed horizontally to the tops of multiple tie rods. When it is necessary to release the filter plate 41 limit, the operator only needs to pull the connecting plate 61 upwards to drive all tie rods to rise synchronously, thereby causing the limit plate 64 to compress the second elastic element 63 and drive the insertion rod 65 to disengage from the limit groove of the mounting block 33.

[0067] The working stability of the filter plate 41 is improved by physical limiting, which ensures filtration efficiency and extends service life. Specifically, in the embodiment of this utility model, the inner cavity of the air inlet duct 1 is provided with two guide plate groups 5. Each guide plate group 5 includes two guide plates 5, and the two guide plates 5 are respectively provided on the left and right side walls of the inner cavity of the air inlet duct 1. The filter plate 41 is provided between the two guide plate groups 5.

[0068] The guide plate 5 refers to a plate-shaped structure with a certain length. Specifically, it can be a straight plate or an irregularly shaped plate with a flow guiding surface. Its installation position forms a clearance fit or sliding fit with the edge of the filter plate 41. A set of guide plates 5 is installed on each of the left and right side walls of the inner cavity of the air inlet duct 1. Each set contains two parallel guide plates 5, and the two sets of guide plates 5 form an installation space to accommodate the filter plate 41.

[0069] There is a certain gap between the top plate 31 and the mounting hole that needs to be sealed. Specifically, in the embodiment of this utility model, a sealing element is provided at the bottom of the top plate 31 to seal the gap between the top plate 31 and the mounting hole.

[0070] The sealing element refers to the elastic material component installed at the bottom of the top plate 31. Specifically, it can be implemented using a rubber pad or a silicone ring. Its function is to fill the gap between the top plate 31 and the mounting hole through elastic deformation, preventing external air or pollutants from entering the inner cavity of the air inlet duct 1. When the top plate 31 covers the mounting hole and is pressed tightly, the sealing element is deformed under pressure and fits tightly against the edge of the mounting hole, forming a physical barrier. Because the sealing element is elastic, it continuously provides sealing force when the top plate 31 is restricted by the fixed structure 2 and keeps a stable position, preventing the gap from widening due to vibration or temperature changes.

[0071] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A wet membrane fresh air system, installed on a wall, characterized in that, include: An air inlet duct is installed in the wall and has an installation hole at the top; The wet film body is disposed inside the air inlet duct; A filter assembly includes a filter plate disposed inside the air inlet duct and passing through the mounting hole; The connecting structure includes a top plate disposed on top of the filter plate and covering the mounting hole for easy placement and removal of the filter plate; the two ends of the top plate extend to the left and right sides of the air inlet duct, respectively; and... The fixing structure includes two fixing plates, two limiting rods, and multiple screw connectors. The two fixing plates are respectively disposed on the left and right sides of the air inlet duct, and an elastic abutment structure is provided between the fixing plates and the top plate. Each limiting rod is disposed on the top of each fixing plate and extends upward. The limiting rod portion passes through both ends of the top plate, and the periphery of the limiting rod is provided with threads. The multiple screw connectors are respectively threaded to the top of each limiting rod to prevent the top plate from detaching from the limiting rod.

2. The wet film fresh air device as described in claim 1, characterized in that, The fixing structure also includes: Two sleeves are each disposed at the bottom of the top plate, and each sleeve is fitted with one of the two limiting rods; and, Two limiting rings are respectively set at the bottom end of each sleeve.

3. The wet membrane fresh air device as described in claim 2, characterized in that, The elastic abutment structure includes a first elastic element, one end of which abuts against the top of the fixing plate and the other end of which abuts against the bottom of the limiting ring.

4. The wet film fresh air device as described in claim 1, characterized in that, The connection structure also includes: Multiple mounting blocks are disposed on the top of the filter plate; and, Multiple mounting rails, with internal movable settings for the mounting rails.

5. The wet film fresh air device as described in claim 4, characterized in that, The mounting block includes a first platform and a second platform. The first platform is disposed between the filter plate and the second platform. The width of the first platform is smaller than the width of the second platform to prevent the mounting block from detaching downward from the mounting rail.

6. The wet film fresh air device as described in claim 4, characterized in that, The mounting block has a limiting groove on its top, the mounting rail has a through hole on its top, and the top plate has at least one limiting component. The limiting component includes multiple insert rods, which are inserted into the limiting groove and pass through the through hole to prevent the mounting block from detaching from the mounting rail.

7. The wet film fresh air device as described in claim 6, characterized in that, The limiting component also includes: The housing is located on top of the top plate; Multiple second elastic elements, one end of each second elastic element being disposed on the top wall of the inner cavity of the box; Multiple limiting plates are respectively disposed at the other end of each of the second elastic members; and, Multiple pull rods are respectively installed on the top of each of the limiting plates and penetrate through the box body; Multiple insertion rods are respectively disposed at the bottom of each of the limiting plates and penetrate the top plate.

8. The wet film fresh air device as described in claim 7, characterized in that, The top of each of the multiple pull rods is provided with a connecting plate to drive the multiple pull rods to move together simultaneously.

9. The wet membrane fresh air device as described in claim 1, characterized in that, The inner cavity of the air inlet duct is provided with two guide plate groups, each guide plate group including two guide plates, and the two guide plates are respectively disposed on the left and right side walls of the inner cavity of the air inlet duct, and the filter plate is disposed between the two guide plate groups.

10. The wet film fresh air device as described in claim 1, characterized in that, A sealing element is provided at the bottom of the top plate to seal the gap between the top plate and the mounting hole.

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