Self-cleaning building air supply duct inner wall cleaning mechanism and air supply system

Abstract

This invention discloses a self-cleaning indoor wall cleaning mechanism and air supply system for dormitory ventilation ducts, belonging to the field of dormitory ventilation technology. The indoor wall cleaning mechanism includes a positioning base, a central shaft vertically fixed to the positioning base, a rotating sleeve rotatably mounted on the central shaft via bearings, and a cleaning brush connected to the outer wall of the rotating sleeve. At least one flexible cleaning belt, capable of drifting with the wind, is detachably mounted on the cleaning brush, ensuring continuous contact with the bottom wall of the air supply duct as it drifts. When this indoor wall cleaning mechanism is installed within an air supply system, the system utilizes the wind-blown characteristic of the flexible cleaning belt to achieve real-time cleaning of both the bottom wall of the air supply duct and the air supply windows, offering advantages such as low investment cost and high energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of building ventilation technology, specifically to a self-cleaning building air supply duct inner wall cleaning mechanism and air supply system. Background Technology

[0002] With the development of large-scale pig farming, the impact of pigsty environmental control on pig health and growth performance has become increasingly significant. As a core component of the pigsty ventilation system, the air supply duct's function is to evenly deliver purified or temperature-controlled air into the pigsty. However, during long-term operation, dust, feed residue, animal hair, and other debris easily accumulate on the inner walls of the air supply duct. If not cleaned promptly, this can lead to the following problems: debris accumulation blocks the air supply duct, affecting ventilation efficiency and causing uneven temperature, humidity, and air quality within the pigsty, increasing the risk of pig diseases; mold growth and bacterial proliferation contaminate the airflow, threatening pig health; traditional manual cleaning requires frequent machine shutdowns and climbing into the duct, resulting in low efficiency, high labor intensity, and safety hazards.

[0003] In the existing technology, some pig houses use mechanical dust removal devices (such as electric brushes and air pumps for blowing), but these have problems such as high energy consumption, complex structure, and high maintenance costs. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a self-cleaning dust removal mechanism for the inner wall of the air supply channel of pigsty that is simple in structure, low in cost, can be driven by wind power in real time and has a stable cleaning effect, so as to solve the problem of dust accumulation on the inner wall of the air supply channel of pigsty.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A self-cleaning dust removal mechanism for the inner wall of a building's air supply duct includes a positioning base, a central shaft vertically fixed on the positioning base, a rotating sleeve rotatably mounted on the central shaft via a bearing, and a cleaning broom connected to the outer wall of the rotating sleeve; at least one flexible cleaning belt that can drift with the wind is tied to the cleaning broom, and the cleaning belt can always contact the bottom wall inside the air supply duct when it drifts with the wind.

[0006] By adopting the above solution, the dust removal mechanism for the inner wall of the building's air supply duct uses a sweeping belt that can be blown by the wind as the cleaning mechanism. Affected by the wind, the sweeping belt is always in contact with the bottom wall as it blows by the wind, realizing real-time cleaning of accumulated dust. It does not require electric drive, which not only reduces costs but also has a significant energy-saving effect.

[0007] As a preferred embodiment of a self-cleaning building air supply duct inner wall cleaning mechanism, the cleaning belt is a strip of cloth, preferably made of wear-resistant and moisture-absorbing cotton-linen blended fabric or industrial canvas, which ensures sufficient flexibility to sway in the wind and has a certain weight to stably contact the bottom wall.

[0008] As a preferred embodiment of a self-cleaning housing air supply duct inner wall cleaning mechanism, the left and right sides of the rotating sleeve are respectively connected to mutually symmetrical main wind-facing plates, and the included angle between the two main wind-facing plates is 45-90°. The function of the main wind-facing plates is to capture the airflow in the air supply duct, and drive the rotating sleeve to rotate around the central axis through wind power, thereby driving the broom and cleaning belt to move.

[0009] As a preferred embodiment of a self-cleaning housing air supply duct inner wall cleaning mechanism, the left and right sides of the positioning base are respectively connected with symmetrical connecting rods, and the included angle between the two connecting rods is 65-110°; each connecting rod end is connected with a vertically set limiting block, wherein two main wind-facing plates are located between the two limiting blocks to limit the lateral swing amplitude of the rotating sleeve and avoid the rotating sleeve from shaking violently due to excessive wind force.

[0010] In a preferred embodiment of a self-cleaning room ventilation duct cleaning mechanism, a spring rod is installed through the limiting block, facing the main windward plate. A return spring is fitted on the spring rod to push it towards the location of the main windward plate. When the main windward plate rotates significantly, it can impact the circular head of the spring rod. The spring rod and the return spring form a rebound structure. When the wind force pushes the rotating sleeve to rotate to one side, the main windward plate can swing towards the limiting block and impact the spring rod. After compression, the return spring pushes the spring rod under the rebound action of the return spring, based on a certain reaction force of the main windward plate, thereby realizing the rotating sleeve swinging back and forth between the two limiting blocks, thereby expanding the cleaning range and cleaning area of ​​the cloth strip.

[0011] As a preferred embodiment of a self-cleaning room air supply duct inner wall dust removal mechanism, each main windward plate has two insertion holes on its upper surface. An auxiliary windward plate located above the main windward plate is inserted through these insertion holes. The auxiliary windward plate can further increase the windward area and improve the driving efficiency of the rotating sleeve. Its insertion design facilitates installation and disassembly, and is easy to maintain. The positions of the insertion holes on the two main windward plates are not symmetrical, which causes a certain shift in the center of gravity of the rotating sleeve, thereby changing the windward area of ​​the main windward plate and the auxiliary windward plate on the left and right sides of the rotating sleeve. At this time, the rotating sleeve is more likely to rotate due to the different forces on the left and right sides, so as to ensure that the rotating sleeve is always in a state of frequent rotation, which can better expand the cleaning range and cleaning area of ​​the cloth strip.

[0012] In a preferred embodiment of a self-cleaning room air supply duct cleaning mechanism, a limiting pin is inserted through the top of the central shaft to prevent the rotating sleeve from falling off. The limiting pin is used to restrict the movement of the rotating sleeve along the central shaft axis to ensure its stability during rotation.

[0013] The second technical problem to be solved by the present invention is to provide a self-cleaning air supply system. This air supply system uses the characteristic of a flexible cleaning belt that drifts with the wind to achieve real-time cleaning of the bottom wall of the air supply channel and the air supply window. It has the advantages of low investment cost and energy efficiency.

[0014] A self-cleaning air supply system includes an air supply duct installed horizontally on the top of the building and multiple air supply windows installed at the bottom of the air supply duct and linearly arrayed along the length of the air supply duct; a self-cleaning air supply duct inner wall cleaning mechanism is provided between each pair of adjacent air supply windows and installed on the inner bottom wall of the air supply duct, and all self-cleaning air supply duct inner wall cleaning mechanisms are arranged sequentially along the air supply direction of the air supply duct; the air supply windows include an air inlet structure located inside the air supply duct and an air outlet structure located outside the air supply duct, wherein the cleaning strip of the self-cleaning air supply duct inner wall cleaning mechanism cleans the surface of the air inlet structure together with the air supply structure when it is blown by the wind.

[0015] By adopting the above scheme, the air supply system utilizes the characteristic of the flexible cleaning belt to float with the wind, distributing the cleaning belt in a linear array along the air supply channel, which can cover the entire bottom wall of the channel; the coordinated design of the air supply window and the cleaning belt, in which the coverage of the cleaning belt can extend to the surface of the air intake structure, not only achieves comprehensive dust removal, but also integrates the air supply function and the dust removal function, saving space.

[0016] The beneficial effects of this invention are as follows: 1. Real-time self-cleaning, no additional energy consumption required: By capturing the natural airflow in the air supply channel, the main wind vane is driven to rotate, which in turn drives the sweeping broom and sweeping belt to move. The sweeping belt is always in contact with the bottom wall as it floats with the wind, realizing real-time cleaning of accumulated dust. No electricity is required, resulting in significant energy-saving effects.

[0017] 2. Simple structure and low cost: The core components (positioning base frame, central shaft, rotating sleeve, sweeping broom, sweeping belt) are all common mechanical parts, with low processing and assembly difficulty and low investment cost.

[0018] 3. Strong adaptability and stable dust removal effect: The combination design of the main windward plate and the auxiliary windward plate increases the windward area. The asymmetrical insertion hole design causes the center of gravity of the rotating sleeve to shift to a certain extent, thereby changing the windward area of ​​the main windward plate and the auxiliary windward plate on the left and right sides of the rotating sleeve. At this time, the rotating sleeve is more likely to rotate due to the different forces on the left and right sides, so as to ensure that the rotating sleeve is always in a state of frequent rotation, which can better expand the cleaning range and cleaning area of ​​the cloth strip.

[0019] 4. Wide coverage and convenient maintenance: The air supply system utilizes the characteristic of flexible cleaning belts that sway with the wind to distribute the cleaning belts in a linear array along the air supply channel, covering the entire bottom wall of the channel; the coordinated design of the air supply window and the cleaning belt, in which the coverage of the cleaning belt can extend to the surface of the air intake structure, not only achieves comprehensive dust removal, but also integrates the air supply function and the dust removal function, saving space. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A three-dimensional structural diagram of the dust removal mechanism for the inner wall of the air supply duct of a self-cleaning building; Figure 2 To remove Figure 1 3D structural diagram of the fabric strip behind the center strip; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 2 Three-dimensional structural diagram after inserting the auxiliary windward plate; Figure 5 A three-dimensional structural diagram of a self-cleaning air supply system; Figure 6 This is a diagram showing the internal structure of a self-cleaning air supply system. Figure 7 for Figure 6 Three-dimensional structure of the central air supply window Figure 1 ; Figure 8 for Figure 6 Three-dimensional structure of the central air supply window Figure 2 ; Markings in the diagram: 1-Positioning base frame; 2-Central shaft; 3-Bearing; 4-Rotating sleeve; 5-Broom; 6-Brush strip; 7-Main windward plate; 8-Connecting rod; 9-Limiting block; 10-Spring rod; 11-Reset spring; 12-Insertion hole; 13-Auxiliary windward plate; 14-Limiting pin; 15-Air supply channel; 16-Air supply window; 17-Air inlet structure; 18-Air outlet structure. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 2 As shown, a self-cleaning cleaning mechanism for the inner wall of a pigsty air supply duct is provided. It is used for cleaning the air supply duct 15 of a pigsty. Specifically, it includes a positioning base frame 1 (the bottom of which is fixedly connected to the bottom wall of the air supply duct 15 by bolts), a central shaft 2 vertically welded to the positioning base frame, a rotating sleeve 4 rotatably mounted on the central shaft 2 via a bearing 3, and a cleaning broom 5 welded to the outer wall of the rotating sleeve 4. At least one flexible cleaning strip that can float with the wind is tied to the cleaning broom 5 (three cleaning strips are tied in the figure). When the cleaning strip floats with the wind, it can always contact the bottom wall inside the air supply duct 15. The cleaning strip is a cloth strip 6 (the length of the cloth strip 6 is 1.3 times the width of the air supply duct 15). The cloth strip 6 is made of wear-resistant and moisture-absorbing cotton and linen blended fabric. Of course, industrial canvas can also be selected to ensure sufficient flexibility to float with the wind and a certain weight to stably contact the bottom wall. The dust removal mechanism inside the air supply duct 15 of the building uses a sweeping belt that can be blown by the wind as the cleaning mechanism. Affected by the wind, the sweeping belt is always in contact with the bottom wall as it blows by the wind, realizing real-time cleaning of accumulated dust. It does not require electric drive, which not only reduces costs but also has a significant energy-saving effect.

[0024] like Figure 2 As shown, symmetrical main wind-facing plates 7 are welded to the left and right sides of the rotating sleeve 4. The included angle between the two main wind-facing plates 7 is 50°, which can be within the range of 45-90°. The function of the main wind-facing plates 7 is to capture the airflow in the air supply channel 15 and drive the rotating sleeve 4 to rotate around the central axis 2 by wind power, thereby driving the sweeping broom 5 and the sweeping belt to move.

[0025] like Figure 2 As shown, symmetrical connecting rods 8 are welded to the left and right sides of the positioning base frame 1, and the included angle between the two connecting rods 8 is 70°, which can be within the range of 65-110°; a vertically set limiting block 9 is welded to the end of each connecting rod 8, and two main wind-facing plates 7 are located between the two limiting blocks 9 to limit the lateral swing amplitude of the rotating sleeve 4 and prevent the rotating sleeve 4 from shaking violently due to excessive wind force.

[0026] like Figure 3As shown, a spring rod 10 is installed through the limiting block 9, facing the main windward plate 7. A return spring 11 (compression spring, spring force coefficient 50N / mm) is fitted on the spring rod 10 to push it to the location of the main windward plate 7. When the main windward plate 7 rotates significantly, it can hit the round rod head of the spring rod 10. The spring rod 10 and the return spring 11 form a rebound structure. When the wind pushes the rotating sleeve 4 to rotate to one side, the main windward plate 7 can swing towards the limiting block 9 and hit the spring rod 10. After compression, the return spring 11 pushes the spring rod 10 under the rebound action of the return spring 11. Based on a certain reaction action of the main windward plate 7, the rotating sleeve 4 swings back and forth between the two limiting blocks 9, thereby expanding the cleaning amplitude and cleaning area of ​​the cloth strip 6.

[0027] like Figure 2 , Figure 4 As shown, each main wind-facing plate 7 has two insertion holes 12 on its upper surface. An auxiliary wind-facing plate (smaller than the main wind-facing plate 7) is inserted through these insertion holes 12. The auxiliary wind-facing plate can further increase the wind-facing area and improve the driving efficiency of the rotating sleeve 4. Its insertion design facilitates installation and disassembly and maintenance. The positions of the insertion holes 12 on the two main wind-facing plates 7 are not symmetrical (e.g., the distance between the left insertion hole 12 and the rotating sleeve 4 is 100mm, and the distance between the right insertion hole 12 and the rotating sleeve 4 is 160mm). This will cause a certain shift in the center of gravity of the rotating sleeve 4, thereby changing the wind-facing area of ​​the main wind-facing plates 7 and the auxiliary wind-facing plates on the left and right sides of the rotating sleeve 4. At this time, the rotating sleeve 4 is more likely to rotate due to the different forces on the left and right sides, so as to ensure that the rotating sleeve 4 is always in a state of frequent rotation, which can better expand the cleaning range and cleaning area of ​​the cloth strip 6.

[0028] like Figure 2 As shown, a limiting pin is inserted through the top of the central shaft 2 to prevent the rotating sleeve 4 from falling off. The limiting pin is used to restrict the movement of the rotating sleeve 4 along the axial direction of the central shaft 2 to ensure its stability during rotation.

[0029] like Figures 5 to 8As shown, a self-cleaning air supply system includes an air supply duct 15 installed horizontally on the top of the pigsty and multiple air supply windows 16 (spaced 2m apart) installed at the bottom of the air supply duct 15 and linearly arrayed along the length of the air supply duct 15; between each pair of adjacent air supply windows 16, there is a self-cleaning air supply duct 15 inner wall cleaning mechanism installed on the inner bottom wall of the air supply duct 15, and all self-cleaning air supply duct 15 inner wall cleaning mechanisms are arranged sequentially along the air supply direction of the air supply duct 15; the air supply window 16 includes an air inlet structure 17 located inside the air supply duct 15 and an air outlet structure 18 located outside the air supply duct 15, wherein the cleaning strip of the self-cleaning air supply duct 15 inner wall cleaning mechanism will clean the surface of the air inlet structure 17 together with the air when it is blown by the wind. The air supply system utilizes the characteristic of flexible cleaning belts that sway with the wind to distribute the cleaning belts in a linear array along the air supply channel 15, which can cover the entire bottom wall of the channel. The coordinated design of the air supply window 16 and the cleaning belt allows the coverage of the cleaning belt to extend to the surface of the air inlet structure 17, which not only achieves comprehensive dust removal but also integrates the air supply function and the dust removal function, saving space.

[0030] Working principle of the invention: like Figure 6 As shown, when there is airflow in the air supply channel 15 (provided by the pigsty ventilation system), the airflow will impact the main windward plate 7, pushing the rotating sleeve 4 to rotate around the central axis 2; the rotating sleeve 4 drives the cloth strip 6 to swing left and right through the cleaning brush 5. Due to its flexible properties, the cloth strip 6 floats with the wind and always maintains contact with the bottom wall of the channel and the surface of the air intake structure 17, thereby avoiding the accumulation of dust.

[0031] To further increase the windward area and improve the driving efficiency of the rotating sleeve 4, the auxiliary windward plate is inserted into the insertion hole 12 of the main windward plate 7. The insertion design facilitates installation and disassembly, and is easy to maintain. The positions of the insertion holes 12 on the two main windward plates 7 are not symmetrical (e.g., the distance from the left insertion hole 12 to the rotating sleeve 4 is 100mm, and the distance from the right insertion hole 12 to the rotating sleeve 4 is 160mm). This will cause a certain shift in the center of gravity of the rotating sleeve 4, thereby changing the windward area of ​​the main windward plates 7 and the auxiliary windward plates on the left and right sides of the rotating sleeve 4. At this time, the rotating sleeve 4 is more likely to rotate due to the different forces on the left and right sides, so as to ensure that the rotating sleeve 4 is always in a state of frequent rotation, which can better expand the cleaning range and cleaning area of ​​the cloth strip 6.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-cleaning air supply system, comprising an air supply duct installed horizontally on the top of a building and a plurality of air supply windows installed at the bottom of the air supply duct and arranged in a linear array along the length of the air supply duct; characterized in that Between each pair of adjacent air supply windows, there is a self-cleaning room air supply duct inner wall cleaning mechanism installed on the bottom wall of the air supply duct. All self-cleaning room air supply duct inner wall cleaning mechanisms are arranged in sequence along the air supply direction of the air supply duct. The self-cleaning room air supply duct inner wall cleaning mechanism includes a positioning base frame, a central shaft vertically fixed on the positioning base frame, a rotating sleeve rotatably mounted on the central shaft via bearings, and a cleaning broom connected to the outer wall of the rotating sleeve; at least one flexible cleaning belt that can float with the wind is tied to the cleaning broom, and the cleaning belt can always contact the bottom wall inside the air supply duct when it floats with the wind. The cleaning belt is a strip of cloth; The rotating sleeve is connected to symmetrical main wind-facing plates on its left and right sides, and the included angle between the two main wind-facing plates is 45-90°. The positioning base is connected to symmetrical connecting rods on the left and right sides respectively, and the included angle between the two connecting rods is 65-110°; a vertically set limiting block is connected to the end of each connecting rod, and the two main windward plates are located between the two limiting blocks. A spring rod is installed through the limiting block and faces the main windward plate. A reset spring is fitted on the spring rod to push it to move towards the location of the main windward plate. When the main windward plate rotates significantly, it can hit the round rod head of the spring rod. Each main windward plate has two holes on its upper surface, through which an auxiliary windward plate located above the main windward plate is inserted. The positions of the sockets on the two main windward panels are not symmetrical. A limiting pin is inserted through the top of the central shaft to prevent the rotating sleeve from falling off; The air supply window includes an air inlet structure located inside the air supply duct and an air outlet structure located outside the air supply duct. The cleaning belt of the self-cleaning room air supply duct inner wall cleaning mechanism cleans the surface of the air inlet structure together with the air when it is blown by the wind.

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