Ventilation and purification system for prefabricated building

Abstract

This invention relates to a ventilation and purification system for prefabricated buildings, comprising an air intake mechanism, a purification structure, and an air outlet mechanism arranged sequentially along the airflow direction. The air intake mechanism includes an air intake duct, an exhaust component arranged along the axis of the air intake duct for extracting indoor air, a start / stop component for controlling whether the air drawn in by the exhaust component can pass through the air intake duct, and a dust scraper component for cleaning the inner wall of the air intake duct located between the exhaust component and the start / stop component. The axes of the exhaust component, the start / stop component, and the dust scraper component are mutually coincident. This invention performs air filtration, adsorption, and purification while simultaneously performing self-cleaning of the duct interior and automatically cleaning up the waste generated during air filtration, adsorption, and purification. This solves the problem that existing ventilation ducts are generally located at high altitudes, making it inconvenient for manual cleaning of the waste generated inside.

Description

Technical Field

[0001] This invention relates to the field of building ventilation technology, and more particularly to a ventilation and purification system for prefabricated buildings. Background Technology

[0002] Ventilation is a building environment control technology that uses methods such as air exchange and dilution or ventilation to control the spread and harm of gaseous pollutants and ensure the quality of indoor and outdoor gas environments. Existing ventilation systems generally require the installation of filtration devices to filter the air entering the room, thereby reducing the amount of dust and other harmful substances entering the room with the air. The filtration devices need to be cleaned regularly by cleaning workers, and the ventilation system usually needs to be shut down during the cleaning process. Therefore, it cannot be used during the cleaning period.

[0003] Patent document CN217817211U discloses a prefabricated building ventilation system, which includes an air intake fan. The air outlet at the left end of the air intake fan is fixedly connected to a connecting pipe a. The end of the connecting pipe a away from the air intake fan is fixedly connected to a ventilation and purification component. The ventilation and purification component includes an exhaust pipe, an air supply branch pipe, a filter component, a humidification component, and a smoke and dust discharge component. The right end of the filter component is fixedly connected to the left end of the connecting pipe a. The filter component includes a filter box, a sealing top plate, a filter element plate, an activated carbon plate, a filter pipe, and a purification pipe.

[0004] However, in actual use, the inventors found that the ventilation ducts used in existing building ventilation systems are usually cleaned manually on a regular basis to remove the waste generated inside. However, since the degree of air pollution is uncontrollable, the pollution is sometimes severe and sometimes slight in the same period of time, making it difficult to control the frequency of regular cleaning and resulting in low purification effect. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by setting up an air intake mechanism in conjunction with a purification structure to perform air filtration, adsorption, and purification while simultaneously performing self-cleaning of the duct interior and automatically removing waste generated during air filtration, adsorption, and purification. This solves the problem that existing building ventilation systems typically require manual periodic cleaning of the ventilation ducts, which is often uncontrollable due to the unpredictable nature of air pollution levels, with pollution levels fluctuating between severe and mild periods, making it difficult to control the frequency of regular cleaning and resulting in low purification efficiency.

[0006] To address the above technical problems, the following technical solution is adopted: a ventilation and purification system for prefabricated buildings, comprising an air inlet mechanism, a purification structure, and an air outlet mechanism arranged sequentially along the airflow direction;

[0007] The air intake mechanism includes an air intake duct, an exhaust assembly arranged along the axial direction of the air intake duct for extracting indoor air, a start / stop assembly for controlling whether the air drawn in by the exhaust assembly can pass through the air intake duct, and a dust scraper assembly for cleaning the inner wall of the air intake duct located between the exhaust assembly and the start / stop assembly. The axes of the exhaust assembly, the start / stop assembly and the dust scraper assembly are arranged to coincide with each other.

[0008] The purification structure includes a rotating component that is connected to the air inlet mechanism and the air outlet mechanism respectively, two sets of filter components arranged along the circumference of the rotating component for filtering and purifying the gas drawn in by the exhaust component, an identification component located inside the filter component for identifying whether the filtered impurities meet the cleanliness standards, and a cleaning component for cleaning dust and other impurities on the filter component.

[0009] Preferably, the exhaust assembly includes a connecting plate installed in the air inlet duct via a support plate, a fan unit installed on one side of the connecting plate, a drive unit installed on the other side of the connecting plate, and a protective net installed at the inlet of the air inlet duct.

[0010] Preferably, the start / stop assembly includes an outer ring plate installed between air inlet ducts, a rotating plate rotatably connected to the inner wall of the outer ring plate, an inner ring plate fixedly connected to the inner wall of the outer ring plate by a bracket, several sets of sealing plates slidably disposed on the rotating plate, and a lever fixedly installed on one side of the rotating plate and passing through the outer ring plate.

[0011] The top of the sealing plate is provided with a sliding rod, and the bracket is provided with a through groove that matches the sliding rod. The inner ring plate is provided with a sliding groove that matches the sealing plate.

[0012] Preferably, the dust scraping assembly includes a rotating shaft rotatably mounted on the inner wall of the air inlet duct via a connecting rod, irregularly shaped fans arranged along the circumference of the rotating shaft, and a cleaning component mounted on the other end of the rotating shaft via a bushing.

[0013] Preferably, the rotating assembly includes a front plate connected to the air inlet mechanism, a rear plate connected to the air outlet mechanism, and a drive shaft installed between the front plate and the rear plate. Both the front plate and the rear plate are provided with circular holes for ventilation.

[0014] Preferably, the filter assembly includes a receiving frame installed between the circular holes in the front and rear plates, a filter plate, an adsorption plate and a purification plate installed in sequence in the receiving frame, and a windshield installed at the front end of the receiving frame.

[0015] The filter plate, adsorption plate, and purification plate are separated into several channels by partitions.

[0016] Preferably, the identification component includes several sets of elastic units installed at the bottom of the receiving frame, a support plate installed on the elastic units and connected above the filter plate, adsorption plate and purification plate, and a control unit disposed at the bottom of the receiving frame and located below the support plate.

[0017] Preferably, the cleaning assembly includes a waste bin disposed below the rotating assembly and a vibrating plate installed inside the waste bin, and the receiving frame is hinged with a door corresponding to the filter plate, adsorption plate and purification plate on the side near the waste bin.

[0018] Preferably, the start / stop assembly is synchronously driven with the rotating assembly via an elastic telescopic rod, and both the front and rear plates are provided with two sets of arc-shaped grooves that are adapted to the elastic rod.

[0019] Preferably, the air inlet mechanism, the purification structure, and the air outlet mechanism are all connected by a magnetic attraction structure, which includes an electromagnetic plate installed on the purification structure, a magnetic attraction plate adapted to the electromagnetic plate, and a telescopic rod installed on the side of the magnetic attraction plate away from the electromagnetic plate.

[0020] The beneficial effects of this invention are:

[0021] (1) In this invention, by setting up an air intake mechanism in conjunction with a purification structure, the air filtration, adsorption and purification work is completed, while the self-cleaning work inside the pipe is completed, and the garbage generated in the air filtration, adsorption and purification work is automatically cleaned. This solves the problem that the ventilation pipes used in the existing building ventilation system are generally set at high altitudes, making it inconvenient for manual cleaning of the garbage generated inside. At the same time, the combination system of air intake mechanism and purification structure is applied to prefabricated buildings, replacing the traditional need for cleaning workers to clean the filter plates regularly, which greatly reduces maintenance costs and reduces maintenance difficulty. It is suitable for promotion in the field of prefabricated buildings.

[0022] (2) In this invention, by setting the start-stop component and the rotation component together, the air inlet pipe is kept sealed during the transfer of garbage stored inside the purification structure, and there will be no continuous blowing, thus preventing the leakage of untreated gas to the greatest extent.

[0023] (3) In this invention, the cleaning component works in conjunction with the above-mentioned filter component to automatically clean the other filter component that is not in operation when the two filter components are rotating. This does not affect the normal operation of the ventilation system and solves the problem of needing to manually clean the filter debris.

[0024] In summary, this equipment has the advantages of strong sealing, good purification effect, and convenient maintenance, and is especially suitable for the field of building ventilation technology. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments 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.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention.

[0028] Figure 3 This is a top view illustrating the overall structure of the present invention.

[0029] Figure 4 This is a schematic diagram of the air intake mechanism.

[0030] Figure 5 This is a schematic diagram of the internal structure of the air intake mechanism.

[0031] Figure 6 This is a schematic diagram of the exhaust system.

[0032] Figure 7 This is a schematic diagram of the dust scraper assembly.

[0033] Figure 8 This is a schematic diagram of the motion state of the rotating component.

[0034] Figure 9 This is a schematic diagram of the motion state of the start / stop component.

[0035] Figure 10 This is an exploded view of the start / stop component.

[0036] Figure 11 This is a schematic diagram of the rotating assembly.

[0037] Figure 12 This is a schematic diagram of the windshield's movement.

[0038] Figure 13 This is a schematic diagram showing the filter assembly rotated 180°.

[0039] Figure 14 This is a schematic diagram of the filter assembly and the cleaning assembly.

[0040] Figure 15 This is a schematic diagram of the magnetic attraction structure. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0042] Example 1

[0043] like Figure 1-14 As shown, a ventilation and purification system for prefabricated buildings includes an air inlet mechanism 1, a purification structure 2, and an air outlet mechanism 3 arranged sequentially along the airflow direction.

[0044] The air intake mechanism 1 includes an air intake duct 11, an exhaust assembly 12 arranged along the axial direction of the air intake duct 11 for extracting indoor air, a start / stop assembly 13 for controlling whether the air drawn in by the exhaust assembly 12 can pass through the air intake duct 11, and a dust scraper assembly 14 for cleaning the inner wall of the air intake duct 11 located between the exhaust assembly 12 and the start / stop assembly 13. The axes of the exhaust assembly 12, the start / stop assembly 13 and the dust scraper assembly 14 are arranged to coincide with each other.

[0045] The purification structure 2 includes a rotating component 21 that is connected to the air inlet mechanism 1 and the air outlet mechanism 3 respectively; two sets of filter components 22 arranged along the circumference of the rotating component 21 for filtering and purifying the gas drawn in by the exhaust component 12; an identification component 23 disposed inside the filter component 22 for identifying whether the filtered impurities meet the cleanliness standards; and a cleaning component 24 for cleaning dust and other impurities on the filter component 22.

[0046] In this embodiment, the air intake mechanism 1 is set to draw indoor air outward, and the air flow speed drives the dust scraper assembly 14 to work. Without providing additional power, the inside of the air intake duct 11 is cleaned, solving the problem that it is inconvenient to clean the inside of the air intake duct 11 manually. Furthermore, the purification structure 2 can filter, adsorb, and purify the indoor air in sequence, maximizing the removal of pollutants from the exhaust air. When the amount of garbage stored inside reaches a certain value, it can be transferred and cleaned.

[0047] In addition, by setting the start-stop component 13 to cooperate with the rotation component 21, the air inlet duct 11 can be kept sealed during the transfer of garbage stored inside the purification structure 2, and there will be no continuous air blowing, thus preventing the leakage of untreated gas to the greatest extent.

[0048] In detail, the exhaust assembly 12 is first activated to draw indoor air into the intake duct 11. At this time, the start / stop assembly 13 is in the active state. Therefore, the drawn air passes sequentially through the dust scraper assembly 14 and the start / stop assembly 13 into the filter assembly 22, where it is filtered, adsorbed, and purified. Finally, the clean air is discharged through the exhaust mechanism 3. During this process, the airflow drives the dust scraper assembly 14 to clean the inside of the intake duct 11 without requiring additional power. When the amount of debris filtered into the filter assembly 22 reaches a certain level, the detection assembly 23... After judgment, the rotating component 21 will start working, driving the filter component 22 to rotate 180°. When the rotating component 21 starts working, the start-stop component 13 will switch from the open state to the closed state, thereby keeping the air inlet duct 11 sealed. After rotation, another set of filter components 22 will take over the work and complete the above process. After rotating 180°, the filter component 22 will be in a downward position. At this time, the internal filter element will fall into the cleaning component 24, which will clean it. After rotating 180° again, it will be reset, thus completing the cyclic cleaning work.

[0049] Furthermore, such as Figure 4-6 As shown, the exhaust assembly 12 includes a connecting plate 121 installed in the air inlet duct 11 via a support plate, a fan unit 122 installed on one side of the connecting plate 121, a drive unit 123 installed on the other side of the connecting plate 121, and a protective net 124 installed at the inlet of the air inlet duct 11.

[0050] In this embodiment, the drive unit 123 drives the fan unit 122 to rotate, thereby drawing indoor air into the air intake duct 11.

[0051] In detail, the protective net 124 blocks larger items such as trash and hair, preventing them from interfering with subsequent filtration.

[0052] Furthermore, such as Figure 4-10 As shown, the start / stop assembly 13 includes an outer ring plate 131 installed between the air inlet ducts 11, a rotating plate 132 rotatably connected to the inner wall of the outer ring plate 131, an inner ring plate 134 fixedly connected to the inner wall of the outer ring plate 131 via a bracket 133, several sets of sealing plates 135 slidably disposed on the rotating plate 132, and a lever 136 fixedly installed on one side of the rotating plate 132 and passing through the outer ring plate 131.

[0053] The top of the sealing plate 135 is provided with a sliding rod 137, and the bracket 133 is provided with a through groove 138 that matches the sliding rod 137. The inner ring plate 134 is provided with a sliding groove 139 that matches the sealing plate 135.

[0054] In this embodiment, the start / stop component 13 is initially in the open state. When the rotating component 21 starts to rotate, the lever 136 will disengage from the rotating component 21 and retract under the action of the elastic force, that is, the lever 136 rotates to one side, driving the rotating plate 132 to rotate, thereby causing the sealing plate 135 on the rotating plate 132 to rotate accordingly. However, since the upper end of the sealing plate 135 is limited by the sliding rod 137 and the through groove 138, it can only rotate to a certain extent, causing several sealing plates 135 to change from an open state to a sealed state, thereby ensuring that the air inlet pipe 11 remains sealed during the garbage transfer process, preventing continuous air blowing and minimizing the problem of untreated gas leakage.

[0055] In detail, the lever 136 is positioned through the outer ring plate 131 and has an elastic element between it and the outer ring plate 131, giving it an automatic reset function. That is, when pulled to the other end by an external force, it will reset to the initial position after the external force disappears.

[0056] Furthermore, such as Figure 6-7 As shown, the dust scraper assembly 14 includes a rotating shaft 142 rotatably mounted on the inner wall of the air inlet duct 11 via a connecting rod 141, an irregularly shaped fan 143 arranged along the circumference of the rotating shaft 142, and a cleaning component 144 mounted on the other end of the rotating shaft 142 via a bushing.

[0057] In this embodiment, by setting the dust scraper assembly 14 to rotate the irregularly shaped fan 143 when the gas enters the air inlet duct 11, the flow of the gas will drive the rotating shaft 142 to rotate, which in turn drives the cleaning component 144 at the other end to rotate, thereby cleaning the rotating plate 132 and the air inlet duct 11, and this work does not require additional power.

[0058] In detail, the irregular fan 143 is designed in an arc shape to maximize contact with the gas, and the arc opening faces the inlet to maximize the use of the gas's propulsive force.

[0059] Furthermore, such as Figure 11-12 As shown, the rotating assembly 21 includes a front plate 211 connected to the air inlet mechanism 1, a rear plate 212 connected to the air outlet mechanism 3, and a drive shaft 213 installed between the front plate 211 and the rear plate 212. Both the front plate 211 and the rear plate 212 are provided with round holes 214 for ventilation.

[0060] In this embodiment, the gas passing through the air inlet duct 11 can flow smoothly into the filter assembly 22 by setting the circular holes 214. The two sets of circular holes 214 are symmetrical about the axis center, and the drive shaft 213 rotates under the drive of the drive source. The drive shaft 213 can be installed on the wall by the ring arm during use, which is the same as the installation method of the air inlet duct 11. The installation method of the air inlet duct 11 is the existing ventilation duct installation method, which is the existing known technology.

[0061] In detail, when the amount of waste filtered in the filter assembly 22 reaches a certain value, the rotating assembly 21 will be activated after the identification assembly 23 makes a judgment. This will cause the drive shaft 213 to rotate, thereby driving the front plate 211 and the rear plate 212 at both ends to rotate around the drive shaft 213, thus completing the conversion between the two sets of filter assemblies 22.

[0062] Furthermore, such as Figure 12-13 As shown, the filter assembly 22 includes a receiving frame 221 installed between the front plate 211 and the rear plate 212 with a circular hole 214, a filter plate 222, an adsorption plate 223 and a purification plate 224 installed in sequence in the receiving frame 221, and a windshield 225 installed at the front end of the receiving frame 221.

[0063] The filter plate 222, adsorption plate 223 and purification plate 224 are separated into several channels by a partition 226.

[0064] In this embodiment, by setting a wind deflector 225, when gas enters, the wind deflector 225 will be separated into different positions according to the amount of gas entering in real time. The wind deflector 225 corresponds to several channels separated by the partition 226. That is, the more gas enters in real time, the stronger the airflow, the wider the wind deflector 225 will be pushed open, and more gas will enter the channels. Conversely, less gas will enter the channels, making the airflow more concentrated and facilitating filtration and other operations.

[0065] In detail, the filter plate 222, adsorption plate 223 and purification plate 224 are made of different materials and are not limited to one type. At the same time, the filter plate 222, adsorption plate 223 and purification plate 224 are all in a sliding state with the receiving frame 221. When the receiving frame 221 is rotated 180°, the filter plate 222, adsorption plate 223 and purification plate 224 will lose support and slide downward. Since they are all in a sliding state with the receiving frame 221, they will not continue to slide down after sliding to the bottom, keeping the bottom inside the receiving frame 221.

[0066] Furthermore, such as Figure 12-14As shown, the identification component 23 includes several sets of elastic units 231 installed at the bottom of the receiving frame 221, a support plate 232 installed on the elastic units 231 and connected above the filter plate 222, the adsorption plate 223 and the purification plate 224, and a control unit 233 disposed at the bottom of the receiving frame 221 and located below the support plate 232.

[0067] In this embodiment, the filter plate 222, the adsorption plate 223 and the purification plate 224 are supported by a support plate 232, and the support plate 232 and the filter plate 222, the adsorption plate 223 and the purification plate 224 are all engaged or fastened, so that the filter plate 222, the adsorption plate 223 and the purification plate 224 will not separate when they fall.

[0068] In detail, when the impurities on the filter plate 222, adsorption plate 223 and purification plate 224 increase, they will press the support plate 232 downward, causing it to compress the elastic unit 231. When the impurities reach a certain value, the support plate 232 will come into contact with the control unit 233 below, thereby triggering the control unit 233 to send a signal to rotate the rotating assembly 21 by 180°.

[0069] Furthermore, such as Figure 14 As shown, the cleaning component 24 includes a waste bin 241 disposed below the rotating component 21 and a vibrating plate 242 installed inside the waste bin 241. The receiving frame 221 is hinged to a baffle 227 on the side near the waste bin 241, which corresponds to the filter plate 222, the adsorption plate 223 and the purification plate 224.

[0070] In this embodiment, by setting up a waste bin 241, after the rotating component 21 rotates 180°, the filter plate 222, adsorption plate 223 and purification plate 224 inside the receiving frame 221 will push open the baffle 227 under the action of gravity, and fall into the waste bin 241, and come into contact with the vibrating plate 242 inside the waste bin 241. At this time, the vibrating plate 242 is activated to vibrate the filter plate 222, adsorption plate 223 and purification plate 224, and vibrate the garbage attached to the plate into the waste bin 241, thus completing the cleaning work.

[0071] Example 2

[0072] like Figure 1-15 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0073] Furthermore, such as Figure 8As shown, the start / stop component 13 is synchronously driven with the rotating component 21 through the elastic rod 100, and the front plate 211 and the rear plate 212 are each provided with two sets of arc-shaped grooves 200 that are adapted to the elastic rod 100.

[0074] In this embodiment, both the elastic rod 100 and the arc-shaped groove 200 are set in two sets. In the initial state, the elastic rod 100 is located at the tail end of the first arc-shaped groove 200, and the start-stop component 13 is in the maximum opening state. When the rotating component 21 starts to rotate, the elastic rod 100 will disengage from the first arc-shaped groove 200. At this time, the elastic rod 100 will return to the initial state under the action of elastic force, and the start-stop component 13 will change to the closed state. As the rotation continues, the elastic rod 100 will fall into the head end of the second arc-shaped groove 200 and move with the movement of the second arc-shaped groove 200. During this process, the start-stop component 13 will slowly open the opening until the rotation stops, at which point the elastic rod 100 is located at the tail end of the second arc-shaped groove 200, and the start-stop component 13 is in the maximum opening state.

[0075] In detail, the start-stop component 13 and the rotating component 21 work together through the cooperation of the elastic rod 100 and the arc groove 200. During the rotation of the rotating component 21, the air inlet pipe 11 is kept in a sealed state and will not blow air continuously, thus preventing the leakage of untreated gas to the greatest extent.

[0076] Furthermore, such as Figure 15 As shown, the air inlet mechanism 1, the purification structure 2 and the air outlet mechanism 3 are all connected by a magnetic attraction structure 4, which includes an electromagnetic plate 41 installed on the purification structure 2, a magnetic attraction plate 42 adapted to the electromagnetic plate 41, and a telescopic rod 43 installed on the side of the magnetic attraction plate 42 away from the electromagnetic plate 41.

[0077] In this embodiment, by setting the cooperation between the electromagnetic plate 41 and the magnetic suction plate 42, the connection between the air intake mechanism 1, the purification structure 2 and the air outlet mechanism 3 is sealed and can be easily disassembled and separated. The electromagnetic plate 41 is installed on the edge of the round hole opened in the front plate 211 and the rear plate 212, while the magnetic suction plate 42 is connected to the air intake pipe 11 and the air outlet pipe through a soft cloth, so that it can move slightly while ensuring its sealing.

[0078] In detail, when the rotating assembly 21 is rotating, the power supply to the electromagnetic plate 41 is first turned off, so that it loses its attraction to the magnetic plate 42, allowing the rotating assembly 21 to rotate. During rotation, the magnetic plate 42 is pressed upward, so that it has a reverse force under the elastic force of the telescopic rod 43, so that it can always be tightly attached to the rotating assembly 21 during the rotation process, further ensuring the sealing. After the rotation is completed, the electromagnetic plate 41 is powered on again, so that it is tightly attached to the magnetic plate 42 again.

[0079] Work process:

[0080] The drive unit 123 drives the fan unit 122 to rotate, thereby drawing indoor air into the air inlet duct 11. The dust scraper assembly 14, when air enters the air inlet duct 11, drives the shaped fan 143 to rotate, which in turn drives the shaft 142 to rotate, thus rotating the cleaning component 144 at the other end. This cleans the rotating plate 132 and the air inlet duct 11. The drawn air passes sequentially through the dust scraper assembly 14 and the start / stop assembly 13 into the filter assembly 22, where it is filtered, adsorbed, and purified. Finally, clean air is discharged through the exhaust mechanism 3. When air enters, the air deflector 225 is opened to different positions according to the amount of air entering. The air deflector 225 corresponds to several channels separated by the partition 226. The more air enters, the stronger the airflow, pushing the air deflector 225 open further, allowing more air to enter the channels. Conversely, less air enters, resulting in more concentrated airflow for filtration. As impurities accumulate on the filter plate 222, adsorption plate 223, and purification plate 224, they press downwards against the support plate 232, compressing the elastic unit 231. When the impurities reach a certain level, the support plate 232 contacts the control unit 233 below, triggering the control unit 233 to send a signal that causes the rotating assembly 21 to rotate 180°. This causes the drive shaft 213 to rotate, thereby driving the front plate 211 and rear plate 212 at both ends to rotate around the drive shaft 213. After the conversion between the two sets of filter components 22 is completed, after the rotating component 21 rotates 180°, the filter plate 222, adsorption plate 223 and purification plate 224 inside the receiving frame 221 will push open the baffle 227 under the action of gravity, and fall into the waste bin 241, and come into contact with the vibrating plate 242 inside the waste bin 241. At this time, the vibrating plate 242 is activated to vibrate the filter plate 222, adsorption plate 223 and purification plate 224, and vibrate the garbage attached to the plate into the waste bin 241, thus completing the cleaning work.

[0081] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0082] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0083] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A ventilation and purification system for prefabricated buildings, characterized in that, It includes an air inlet mechanism, a purification structure, and an air outlet mechanism arranged sequentially along the airflow direction; The air intake mechanism includes an air intake duct, an exhaust component arranged along the axial direction of the air intake duct and used to extract indoor air, a start / stop component for controlling whether the gas drawn in by the exhaust component can pass through the air intake duct, and a dust scraper component for cleaning the inner wall of the air intake duct located between the exhaust component and the start / stop component. The axes of the exhaust component, the start / stop component and the dust scraper component are arranged to coincide with each other. The purification structure includes a rotating component that is connected to the air inlet mechanism and the air outlet mechanism respectively, two sets of filter components arranged along the circumference of the rotating component for filtering and purifying the gas drawn in by the exhaust component, an identification component set inside the filter component for identifying whether the filtered impurities meet the cleanliness standard, and a cleaning component for cleaning dust and other impurities on the filter component. The start / stop assembly includes an outer ring plate installed between air inlet ducts, a rotating plate rotatably connected to the inner wall of the outer ring plate, an inner ring plate fixedly connected to the inner wall of the outer ring plate by a bracket, several sets of sealing plates slidably disposed on the rotating plate, and a lever fixedly installed on one side of the rotating plate and passing through the outer ring plate. The top of the sealing plate is provided with a sliding rod, and the bracket is provided with a through groove that matches the sliding rod. The inner ring plate is provided with a sliding groove that matches the sealing plate. The rotating assembly includes a front plate connected to the air inlet mechanism, a rear plate connected to the air outlet mechanism, and a drive shaft installed between the front plate and the rear plate. Both the front plate and the rear plate have circular holes for ventilation. The filter assembly includes a receiving frame installed between the circular holes in the front plate and the rear plate, a filter plate, an adsorption plate, and a purification plate installed in sequence in the receiving frame, and a windshield installed at the front end of the receiving frame. The filter plate, adsorption plate, and purification plate are separated into several channels by partitions; The identification component includes several sets of elastic units installed at the bottom of the receiving frame, a support plate installed on the elastic units and connected above the filter plate, adsorption plate and purification plate, and a control unit disposed at the bottom of the receiving frame and located below the support plate. The cleaning assembly includes a waste bin located below the rotating assembly and a vibrating plate installed inside the waste bin. The receiving frame is hinged with a door corresponding to the filter plate, adsorption plate and purification plate on the side near the waste bin. The start-stop component is synchronously driven with the rotating component through an elastic rod, and two sets of arc-shaped grooves adapted to the elastic rod are provided on both the front plate and the rear plate. The air intake mechanism, purification structure, and air outlet mechanism are all connected by a magnetic attraction structure, which includes an electromagnetic plate installed on the purification structure, a magnetic attraction plate adapted to the electromagnetic plate, and a telescopic rod installed on the side of the magnetic attraction plate away from the electromagnetic plate.

2. The ventilation and purification system for prefabricated buildings according to claim 1, characterized in that, The exhaust assembly includes a connecting plate installed inside the air inlet duct via a support plate, a fan unit installed on one side of the connecting plate, a drive unit installed on the other side of the connecting plate, and a protective net installed at the inlet of the air inlet duct.

3. The ventilation and purification system for prefabricated buildings according to claim 1, characterized in that, The dust scraping assembly includes a rotating shaft mounted on the inner wall of the air inlet duct via a connecting rod, irregularly shaped fans arranged along the circumference of the rotating shaft, and a cleaning component mounted on the other end of the rotating shaft via a bushing.

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