A heating ventilation duct air filter device

Abstract

The utility model provides a kind of warm ventilation pipe air filtering device, it is related to filtering device technical field, including pipeline, the inner wall of the pipeline is equipped with cleaning assembly, the cleaning assembly includes round leakage plate, the outer wall of the round leakage plate is rotatably connected with single-side gear, the inner wall of the single-side gear is fixedly installed with round shaft.The utility model, by setting cleaning assembly, by kinetic energy self-driven realizes efficient cleaning and low consumption durable.By the ventilation airflow driving fan rotation, airflow kinetic energy is converted into cleaning power, single-side gear and rack transmission make cleaning plate reciprocating sliding along round leakage plate, first elastic piece self-adapting adjustment cleaning pressure, second elastic piece provides buffer reset, without additional energy can automatically remove pore dust.At the same time, cooperate with elastic piece to absorb vibration, reduce mechanical wear, avoid component loosening, not only prolong the service life of device, also greatly reduce artificial cleaning frequency, effectively reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to an air filtration device for heating and ventilation ducts. Background Technology

[0002] In HVAC systems, the air filtration devices in ventilation ducts play a crucial role in ensuring indoor air quality.

[0003] Traditional filtration devices have problems. On the one hand, the filter screen is easily clogged by dust, which leads to reduced ventilation efficiency, increased energy consumption, and high costs for frequent manual cleaning and maintenance. On the other hand, existing filtration structures cannot simultaneously achieve high-efficiency filtration and safety protection. In high-dust environments or high-temperature conditions, not only is the filtration effect poor, but there is also a safety hazard of fire caused by dust accumulation. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] The present invention adopts the following technical solution: an air filtration device for a heating and ventilation duct, comprising a duct, wherein a cleaning component is provided on the inner wall of the duct, the cleaning component comprising a circular strainer, a single-sided gear rotatably connected to the outer wall of the circular strainer, a circular shaft fixedly installed on the inner wall of the single-sided gear, a rack meshing on the outer wall of the single-sided gear, a cleaning plate fixedly installed on the outer wall of the rack, a first elastic element fixedly installed on the inner wall of the cleaning plate, a movable plate fixedly installed on the side of the first elastic element away from the first cleaning plate, and a second elastic element fixedly installed at the bottom of the rack.

[0006] Preferably, a fixing plate is fixedly installed on the inner wall of the pipe, a fan is fixedly installed on the outer wall of the circular shaft, a filter assembly is provided on the inner wall of the pipe, and a dust detector is provided on the outer wall of the filter assembly. Here, the fixing plate, fan, filter assembly, and dust detector form an intelligent purification system. The fan accelerates air circulation by using airflow to improve filtration efficiency; the dust detector monitors air quality in real time and can trigger an alarm or automatic cleaning program when the dust content exceeds the standard.

[0007] Preferably, the outer wall of the circular drain plate is rotatably connected to the inner wall of the pipe, the side of the cleaning plate away from the rack is slidably connected to the outer wall of the circular drain plate, and the side of the circular shaft away from the fan is fixedly installed to the outer wall of the circular drain plate. Here, the fixed installation of the circular drain plate to the pipe and the sliding design of the cleaning plate create a stable cleaning track.

[0008] Preferably, the bottom of the second elastic element is fixedly installed to the inner wall of the pipe, a movable plate is slidably connected to the inner wall of the cleaning plate, and the outer wall of the circular shaft is rotatably connected to the inner wall of the fixed plate. Here, the fixed connection between the second elastic element and the inner wall of the pipe, combined with the sliding structure of the cleaning plate and the movable plate, enables the cleaning assembly to have dynamic self-adaptive capabilities.

[0009] Preferably, the filter assembly includes a housing, a rectangular filter plate is fixedly installed on the inner wall of the housing, filter elements are respectively provided on both sides of the rectangular filter plate, and a sliding plate is slidably connected to the inner wall of the housing. Here, the filter assembly adopts a composite structure of "rectangular filter plate + dual filter elements + sliding plate" to achieve multi-stage fine filtration. The rectangular filter plate intercepts large particulate pollutants, the filter elements on both sides further adsorb fine particles such as PM2.5, and the sliding plate design facilitates quick disassembly and replacement of filter media.

[0010] Preferably, a rectangular block is fixedly installed on the outer wall of the slide plate, a steel ball is provided on the inner wall of the rectangular block, a third elastic element is fixedly installed on the outer wall of the steel ball, and a square plate is fixedly installed on the bottom of the third elastic element. Here, the steel ball, the third elastic element, and the square plate on the slide plate constitute a convenient locking mechanism. During installation, the steel ball automatically engages with the rectangular block under the action of the elastic element, ensuring that the filter element is stable and does not wobble.

[0011] Preferably, the outer wall of the outer casing is fixedly installed to the inner wall of the pipe, the outer wall of the filter element is in contact with the inner wall of the outer casing, the outer wall of the steel ball is engaged with the inner wall of the rectangular block, and the outer wall of the square plate is fixedly installed to the outer wall of the outer casing. Here, the tight assembly of the filter assembly and the pipe, along with the steel ball engagement design, ensures zero leakage during the filtration process. The fixed outer casing to the pipe and the close fit between the filter element and the outer casing prevent unfiltered air from bypassing.

[0012] Preferably, the filter element is composed of glass fiber, a gradient structure, and a flame retardant. Here, the filter element uses a composite material of glass fiber, a gradient structure, and a flame retardant, combining high-efficiency filtration with safety protection. The high specific surface area of ​​the glass fiber enables strong adsorption of micro-dust, the gradient pore structure optimizes air resistance and extends service life, and the addition of the flame retardant effectively resists high temperatures or electrical sparks.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, a cleaning component is incorporated to achieve efficient cleaning and low-consumption durability through kinetic energy self-drive. The device utilizes ventilation airflow to drive a fan, converting airflow kinetic energy into cleaning power. A single-sided gear and rack transmission causes the cleaning plate to slide back and forth along a circular perforated plate. A first elastic element adaptively adjusts the cleaning pressure, while a second elastic element provides buffering and reset, automatically removing dust accumulated in pores without additional energy. Simultaneously, the elastic elements absorb vibration, reducing mechanical wear and preventing component loosening. This not only extends the device's service life but also significantly reduces the frequency of manual cleaning, effectively lowering maintenance costs.

[0015] 2. In this utility model, a multi-stage precise purification system is achieved by using a "rectangular filter plate + dual filter element" composite structure in the filter assembly. The rectangular filter plate first intercepts pollutants such as hair and large dust particles. The filter elements on both sides, composed of glass fiber, a gradient structure, and flame retardant, adsorb fine particles through their high specific surface area, and the gradient pores optimize air resistance, efficiently filtering pollutants such as PM2.5. Simultaneously, the sliding plate filter element, combined with a steel ball locking mechanism, allows for tool-free, quick filter element replacement by pressing the square plate, significantly reducing maintenance time. The steel ball locking ensures the filter element is secure and leak-free, while the flame retardant effectively prevents fire hazards. Combined with real-time monitoring by a dust detector, a comprehensive system ensuring purification, maintenance, and safety protection is formed. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an air filtration device for a heating and ventilation duct;

[0017] Figure 2 This utility model provides a schematic diagram of the other side of a heating ventilation duct air filtration device;

[0018] Figure 3 This utility model provides a cross-sectional structural diagram of an air filtration device for a heating and ventilation duct.

[0019] Figure 4 This utility model provides a schematic diagram of the filter assembly structure of a heating ventilation duct air filtration device;

[0020] Figure 5 This utility model provides a schematic diagram of the cleaning component structure of an air filtration device for heating and ventilation ducts;

[0021] Figure 6 This utility model proposes an air filtration device for heating and ventilation ducts. Figure 3 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Ductwork; 2. Fan; 3. Mounting plate; 4. Cleaning assembly; 5. Filter assembly; 6. Dust detector;

[0024] 401. Circular strainer; 402. Single-sided gear; 403. Round shaft; 404. Rack; 405. Cleaning plate; 406. First elastic element; 407. Second elastic element; 408. Moving plate;

[0025] 501. Outer shell; 502. Rectangular filter plate; 503. Filter element; 504. Slide plate; 505. Rectangular block; 506. Steel ball; 507. Third elastic element; 508. Square plate. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Example 1

[0029] Please see Figures 1-6 This utility model provides a technical solution: an air filtration device for a heating and ventilation duct, including a pipe 1, a cleaning component 4 provided on the inner wall of the pipe 1, the cleaning component 4 including a circular strainer 401, a single-sided gear 402 rotatably connected to the outer wall of the circular strainer 401, a circular shaft 403 fixedly installed on the inner wall of the single-sided gear 402, a rack 404 meshing with the outer wall of the single-sided gear 402, a cleaning plate 405 fixedly installed on the outer wall of the rack 404, a first elastic element 406 fixedly installed on the inner wall of the cleaning plate 405, a movable plate 408 fixedly installed on the side of the first elastic element 406 away from the cleaning plate 405, and a second elastic element 407 fixedly installed at the bottom of the rack 404.

[0030] A fixing plate 3 is fixedly installed on the inner wall of pipe 1, and a fan 2 is fixedly installed on the outer wall of the circular shaft 403. A filter assembly 5 is provided on the inner wall of pipe 1, and a dust detector 6 is provided on the outer wall of the filter assembly 5. Here, the fixing plate 3, fan 2, filter assembly 5, and dust detector 6 form an intelligent purification system. The fan 2 accelerates air circulation by using airflow to improve filtration efficiency; the dust detector 6 monitors air quality in real time, and can trigger an alarm or automatic cleaning program when the dust content exceeds the standard, realizing closed-loop management of the entire process from ventilation and purification to data feedback, ensuring the quality of air output.

[0031] The outer wall of the circular drain plate 401 is rotatably connected to the inner wall of the pipe 1. The side of the cleaning plate 405 away from the rack 404 is slidably connected to the outer wall of the circular drain plate 401. The side of the circular shaft 403 away from the fan 2 is fixedly installed to the outer wall of the circular drain plate 401. Here, the fixed installation of the circular drain plate 401 to the pipe 1 and the sliding design of the cleaning plate 405 create a stable cleaning track. This structure ensures that the cleaning component 4 is firmly embedded in the pipe 1, and allows the cleaning plate 405 to clean 360° along the surface of the circular drain plate 401 without dead angles, preventing dust from accumulating in the pores of the circular drain plate 401 and affecting ventilation efficiency, while reducing mechanical wear caused by the offset of the cleaning plate 405.

[0032] The bottom of the second elastic element 407 is fixedly installed to the inner wall of the pipe 1. The inner wall of the cleaning plate 405 is slidably connected to the movable plate 408, and the outer wall of the round shaft 403 is rotatably connected to the inner wall of the fixed plate 3. Here, the fixed connection between the second elastic element 407 and the inner wall of the pipe 1, combined with the sliding structure of the cleaning plate 405 and the movable plate 408, enables the cleaning assembly 4 to have dynamic self-adaptive capabilities. The elastic element can absorb vibrations during the cleaning process, preventing parts from loosening. Under the action of the first elastic element 406, the movable plate 408 can automatically adjust the contact pressure according to the thickness of the dust, ensuring that even stubborn dust can be effectively removed.

[0033] The filter assembly 5 includes a housing 501, on the inner wall of which a rectangular filter plate 502 is fixedly mounted. Filter elements 503 are respectively provided on both sides of the rectangular filter plate 502. A sliding plate 504 is slidably connected to the inner wall of the housing 501. Here, the filter assembly 5 adopts a composite structure of "rectangular filter plate 502 + dual filter elements 503 + sliding plate 504" to achieve multi-stage fine filtration. The rectangular filter plate 502 intercepts large particulate pollutants, while the filter elements 503 on both sides further adsorb fine particles such as PM2.5. The sliding plate 504 is designed to facilitate quick disassembly and replacement of filter media, effectively improving filtration efficiency and reducing maintenance costs.

[0034] A rectangular block 505 is fixedly installed on the outer wall of the slide plate 504. A steel ball 506 is located on the inner wall of the rectangular block 505. A third elastic element 507 is fixedly installed on the outer wall of the steel ball 506. A square plate 508 is fixedly installed at the bottom of the third elastic element 507. Here, the steel ball 506, the third elastic element 507, and the square plate 508 on the slide plate 504 constitute a convenient locking mechanism. During installation, the steel ball 506 automatically engages with the rectangular block 505 under the action of the elastic element, ensuring the filter element 503 is stable and does not wobble. During maintenance, pressing the square plate 508 compresses the elastic element, and the steel ball 506 retracts, allowing the slide plate 504 to be easily pulled out. The operation is simple and labor-saving, significantly reducing equipment downtime for maintenance.

[0035] The outer wall of the outer casing 501 is fixedly installed to the inner wall of the pipe 1. The outer wall of the filter element 503 is in contact with the inner wall of the outer casing 501. The outer wall of the steel ball 506 is engaged with the inner wall of the rectangular block 505. The outer wall of the square plate 508 is fixedly installed to the outer wall of the outer casing 501. Here, the tight assembly of the filter assembly 5 with the pipe 1 and the engagement design of the steel ball 506 ensure zero leakage during the filtration process. The fixed outer casing 501 with the pipe 1 and the close fit between the filter element 503 and the outer casing 501 prevent unfiltered air from bypassing. The locking structure of the steel ball 506 enhances the stability of the slide plate 504, preventing the filter element 503 from shifting and causing filtration failure, ensuring that every wisp of air is fully purified.

[0036] Filter element 503 is composed of glass fiber, a gradient structure, and a flame retardant. Here, filter element 503 utilizes a composite material of glass fiber, a gradient structure, and a flame retardant, combining high-efficiency filtration with safety protection. The high specific surface area of ​​the glass fiber enables strong adsorption of micro-dust, the gradient pore structure optimizes air resistance and extends service life, and the addition of a flame retardant effectively resists high temperatures or electrical sparks, preventing fire hazards caused by dust accumulation in the ventilation system and ensuring safe equipment operation.

[0037] Working Principle: When the ventilation system is activated, airflow is formed within duct 1. The airflow impacts fan 2, causing the circular shaft 403 to rotate, accelerating the airflow speed within duct 1. The rotation of the circular shaft 403 drives the single-sided gear 402 and the circular strainer 401 to rotate synchronously. At this time, the circular strainer 401 can rotate within the inner wall of duct 1. The special tooth design of the single-sided gear 402 allows it to mesh with the rack 404 only at a specific angle, converting the circular motion into the linear reciprocating motion of the rack 404. The rack 404 drives the cleaning plate 405 to slide along the surface of the circular strainer 401. The first elastic element 406 pushes the moving plate 408 to press tightly against the circular strainer 401, automatically adapting to the dust thickness and ensuring that stubborn dust is removed. The second elastic element 407 provides buffering and restoring force during the return stroke of the rack 404, enabling the cleaning plate 405 to perform cyclic cleaning. The cleaning plate 405 slides on the outer wall of the rotating circular strainer 401, thoroughly removing dust from the pores of the circular strainer 401 and preventing blockage that could affect ventilation. When the filter element 503 needs to be replaced: by sliding the slide plate 504 on the inner wall of the housing 501, the slide plate 504 can drive the rectangular block 505, causing the inner wall of the rectangular block 505 to disengage from the outer wall of the steel ball 506. At this time, the slide plate 504 can slide out from the inner wall of the housing 501, allowing the old filter element 503 to be quickly removed and replaced with a new one without the need for complicated tools, thus shortening downtime for maintenance. The dust detector 6 continuously monitors air quality data and transmits the information to the control system. The threshold judgment control system compares real-time data with preset standards: if the air quality meets the standards, the system maintains normal operation. If the dust content exceeds the standard, an alarm is triggered. An audible and visual alarm is triggered to remind operators to replace filter element 503 or repair the equipment. The flame retardant in flame-retardant protective filter element 503 effectively prevents the spread of flames and avoids fires caused by dust accumulation.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A heating and ventilation duct air filtration device, comprising a duct (1), characterized in that: The inner wall of the pipe (1) is provided with a cleaning component (4), the cleaning component (4) includes a circular drain plate (401), the outer wall of the circular drain plate (401) is rotatably connected to a single-sided gear (402), the inner wall of the single-sided gear (402) is fixedly installed with a round shaft (403), the outer wall of the single-sided gear (402) is meshed with a rack (404), the outer wall of the rack (404) is fixedly installed with a cleaning plate (405), the inner wall of the cleaning plate (405) is fixedly installed with a first elastic element (406), the side of the first elastic element (406) away from the cleaning plate (405) is fixedly installed with a moving plate (408), and the bottom of the rack (404) is fixedly installed with a second elastic element (407).

2. The air filtration device for a heating and ventilation duct according to claim 1, characterized in that: A fixing plate (3) is fixedly installed on the inner wall of the pipe (1), a fan (2) is fixedly installed on the outer wall of the round shaft (403), a filter assembly (5) is provided on the inner wall of the pipe (1), and a dust detector (6) is provided on the outer wall of the filter assembly (5).

3. The air filtration device for a heating and ventilation duct according to claim 1, characterized in that: The outer wall of the circular drain plate (401) is rotatably connected to the inner wall of the pipe (1), the side of the cleaning plate (405) away from the rack (404) is slidably connected to the outer wall of the circular drain plate (401), and the side of the circular shaft (403) away from the fan (2) is fixedly installed to the outer wall of the circular drain plate (401).

4. The air filtration device for a heating and ventilation duct according to claim 3, characterized in that: The bottom of the second elastic element (407) is fixedly installed on the inner wall of the pipe (1), the inner wall of the cleaning plate (405) is slidably connected to the moving plate (408), and the outer wall of the round shaft (403) is rotatably connected to the inner wall of the fixed plate (3).

5. The air filtration device for a heating and ventilation duct according to claim 2, characterized in that: The filter assembly (5) includes a housing (501), a rectangular filter plate (502) is fixedly installed on the inner wall of the housing (501), filter elements (503) are respectively provided on both sides of the rectangular filter plate (502), and a sliding plate (504) is slidably connected to the inner wall of the housing (501).

6. The air filtration device for a heating and ventilation duct according to claim 5, characterized in that: A rectangular block (505) is fixedly installed on the outer wall of the slide plate (504). A steel ball (506) is provided on the inner wall of the rectangular block (505). A third elastic element (507) is fixedly installed on the outer wall of the steel ball (506). A square plate (508) is fixedly installed on the bottom of the third elastic element (507).

7. The air filtration device for a heating and ventilation duct according to claim 6, characterized in that: The outer wall of the outer shell (501) is fixedly installed with the inner wall of the pipe (1), the outer wall of the filter element (503) is in contact with the inner wall of the outer shell (501), the outer wall of the steel ball (506) is engaged with the inner wall of the rectangular block (505), and the outer wall of the square plate (508) is fixedly installed with the outer wall of the outer shell (501).

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