Filtering equipment for fresh air system

Abstract

The utility model relates to the technical field of fresh air filtering, in particular to filtering equipment for a fresh air system. According to the technical scheme, the device comprises a clean room, and a primary filtering mechanism, an intermediate filtering mechanism and an advanced filtering mechanism which are arranged on the clean room and are connected in sequence, and further comprises a pair of sliding filtering plates which are arranged in the primary filtering mechanism in a sliding manner. According to the utility model, the primary filtering mechanism, the sliding filtering plate, the filtering nets, the through holes, the driving mechanism, the brush and other structures are matched, and the pair of filtering nets is arranged and simultaneously runs in a staggered manner. And when one filter screen works, the other filter screen is in a standby state. And when one filter screen is blocked, the effect is poor, the multi-stage air cylinder is started through the wind direction sensor, and then the other filter screen is used for replacing the other filter screen. And the used filter screen is retracted into the blocking cover and can be cleaned up for next use, so that the pair of filter screens can be repeatedly used in a staggered manner, and the operation is quick and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh air filtering, in particular to filtering equipment for a fresh air system. Background Art

[0002] Traditional lead plants house slag processing, raw material preparation, and lead primary electrolysis processes, with operating rooms and rest rooms located within the production area. This results in poor indoor air quality, negatively impacting the health of operators and posing a significant risk of occupational illness. To ensure safe production, protect employee health, and prevent occupational illnesses, fresh air systems are often installed to purify and improve air quality. These systems typically incorporate multiple stages of filtration to effectively filter and purify airborne particulate matter. The first stage of filtration is typically the primary filter, which primarily captures larger particles such as dust, hair, and pollen. These filters are typically located at the front end of the system, protecting subsequent, finer filters from larger particles. However, over time, primary filters can become clogged. If clogged, they can restrict air flow, preventing the system from properly inhaling and expelling air, and impacting overall ventilation efficiency. Consequently, insufficient air flow can overload fans and other equipment, leading to increased motor temperatures, reduced efficiency, and even equipment damage or failure. Utility Model Content

[0003] The purpose of this utility model is to address the problem that the primary filter will gradually become clogged over time. If the blockage is not cleared in time, it will not only restrict the flow of air, but also cause the system to be unable to normally inhale and exhaust air, affecting the overall ventilation effect. Subsequently, due to insufficient air flow, the fan or other equipment may overload and cause the motor temperature to rise, the efficiency to decrease, and even cause equipment damage or failure. The utility model proposes a filter device for the fresh air system.

[0004] The technical solution of the utility model is: a filtering device for a fresh air system, comprising a clean room and a primary filtering mechanism, a secondary filtering mechanism and a high-level filtering mechanism arranged in the clean room and connected in sequence, and also comprising: a pair of sliding filter plates slidably arranged in the primary filtering mechanism, one end of the sliding filter plate being provided with a filter screen for filtering large particles of impurities in the air, and the other end of the sliding filter plate being provided with a perforation for air to pass through; a driving mechanism installed at one end of the primary filtering mechanism so that the filter screens on the sliding filter plate are used in an alternating manner after the wind speed is reduced; a shield fixedly sleeved on the primary filtering mechanism for covering the sliding filter plate, the interior of the shield being fixedly connected with a brush for removing impurities on the filter screen.

[0005] Optionally, the driving mechanism includes a wind direction sensor fixedly connected to one end of the primary filtering mechanism close to the secondary filtering mechanism, and a support cover is fixedly connected to the middle outer wall of the primary filtering mechanism. The interior of the support cover is provided with a multi-stage cylinder connected to the output end of the controller, and the input end of the controller is connected to the wind direction sensor.

[0006] Optionally, the piston rod of the multi-stage cylinder is movably passed through the primary filtering mechanism and then fixedly connected to an H-shaped bracket, and both ends of the H-shaped bracket are fixedly connected to corresponding sliding filter plates.

[0007] Optionally, one end of the shield is fixedly connected to a convex shield for receiving impurities on the sliding filter plate, and the interior of the convex shield is fixedly connected to a guide block for guiding impurities sliding off the filter screen into the convex shield.

[0008] Optionally, the convex cover is provided with a cleaning port for cleaning impurities in the convex cover.

[0009] Optionally, connecting pipes are provided between the primary filtering mechanism, the intermediate filtering mechanism and the advanced filtering mechanism.

[0010] Optionally, the clean room is provided with a conveying mechanism for conveying the air passing through the advanced filtering mechanism into the clean room.

[0011] Optionally, an end of the primary filtering mechanism away from the secondary filtering mechanism is fixedly connected to an air inlet pipe for air to pass through.

[0012] In summary, this application includes at least the following beneficial technical effects for fresh air system filtration equipment:

[0013] This utility model utilizes a primary filter mechanism, a sliding filter plate, a filter screen, perforations, a drive mechanism, and a brush to create a pair of filters that operate simultaneously in a staggered manner. While one filter screen is operating, the other is in standby mode. If one filter screen becomes clogged and ineffective, a wind direction sensor activates a multi-stage cylinder, allowing the other filter screen to replace the other. After use, the filter screen retracts into a shield, where it can be cleaned and prepared for the next use. This allows for the staggered reuse of the pair of filters, making it quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of the utility model for a filter device for a fresh air system is given;

[0015] Figure 2 for Figure 1 A schematic cross-sectional view of the first filtering structure;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0017] Figure 4 Schematic diagram of the split structure of the first filtering mechanism;

[0018] Figure 5 Schematic diagram of the structure of the sliding filter plate 4.

[0019] Figure numerals: 1. Clean room; 2. Primary filtering mechanism; 21. Wind direction sensor; 3. Intermediate filtering mechanism; 4. Advanced filtering mechanism; 234. Connecting pipe; 5. Conveying mechanism; 6. Sliding filter plate; 61. Filter screen; 62. Perforation; 7. Shield; 71. Conveyor cover; 72. Guide block; 73. Cleaning port; 74. Brush; 8. Support cover; 81. Multi-stage cylinder; 9. H-shaped bracket; 10. Air inlet pipe. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0022] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, article, or apparatus. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] Example

[0027] like Figure 1-5As shown, the filtration device for a fresh air system proposed in the present invention includes a cleanroom 1 and a primary filtration mechanism 2, an intermediate filtration mechanism 3, and a high-level filtration mechanism 4, which are sequentially connected to the cleanroom 1. Connecting pipes 234 are provided between the primary filtration mechanism 2, the intermediate filtration mechanism 3, and the high-level filtration mechanism 4. The primary filtration mechanism 2 (coarse filter) primarily captures larger particles such as dust, hair, and pollen. These filters are typically located at the front end of the system, protecting subsequent, finer filters from larger particles. The intermediate filtration mechanism 3 captures medium-sized particles such as fine dust and smoke. The intermediate filter effectively removes medium-sized particles that larger particles cannot capture. The high-level filtration mechanism 4 captures very fine particles, including micron-sized bacteria, viruses, and smoke. The HEPA filter can remove 99.97% or more of 0.3-micron particles. A conveying mechanism 5 is provided within the cleanroom 1 to transport air that has passed through the high-level filtration mechanism 4 into the cleanroom 1. The conveying mechanism 5 refers to the overall system that uses ducts, fans, and other equipment to draw fresh air into the room and distribute it to various spaces. The primary filter mechanism 2 is fixedly connected to an air inlet pipe 10 for air to pass through at one end away from the secondary filter mechanism 3, and also includes: a pair of sliding filter plates 6 slidably arranged in the primary filter mechanism 2, one end of the sliding filter plate 6 is provided with a filter screen 61 for filtering large particles of impurities in the air, and the other end of the sliding filter plate 6 is provided with a through hole 62 for air to pass through; a driving mechanism installed at one end of the primary filter mechanism 2 so that the filter screens 61 on the pair of sliding filter plates 6 are used alternately after the wind speed is reduced; a shield 7, fixedly mounted on the primary filter mechanism 2 for covering the sliding filter plate 6, and the interior of the shield 7 is fixedly connected to a brush 74 for removing impurities on the filter screen 61, and the brush 74 is made of wear-resistant and chemical-resistant nylon.

[0028] Furthermore, the driving mechanism includes a wind direction sensor 21 fixedly connected to one end of the primary filtering mechanism 2 close to the secondary filtering mechanism 3. The wind direction sensor 21 is an instrument for measuring the direction of the wind. It is usually composed of a sensor assembly that can detect the direction of the wind and convert the data into an electrical signal. It is commonly used in fields such as meteorological monitoring, navigation, aviation and environmental research to help analyze wind patterns and trends. The middle outer wall of the primary filtering mechanism 2 is fixedly connected to a support cover 8, and the interior of the support cover 8 is provided with a multi-stage cylinder 81 connected to the output end of the controller. The multi-stage cylinder 81 is a cylinder design, usually used in the process of compressing or expanding gas. It is composed of a plurality of cylinders in cascade, each cylinder can work independently, gradually increasing the pressure or volume of the gas. The input end of the controller is connected to the wind direction sensor 21.

[0029] Among them, the piston rod of the multi-stage cylinder 81 moves through the primary filtering mechanism 2 and is fixedly connected to an H-shaped bracket 9. The two ends of the H-shaped bracket 9 are fixedly connected to the corresponding sliding filter plate 6, and the two ends of the H-shaped bracket 9 are connected to the middle of the sliding filter plate 6.

[0030] Furthermore, one end of the shield 7 is fixedly connected to a convex cover 71 for receiving impurities from the sliding filter plate 6. The convex cover 71 is used to store impurities on the filter screen 61. Each convex cover 71 is provided with a cleaning port 73 for cleaning impurities from the convex cover 71. The cleaning port 73 is used to insert the vacuum cleaner pipe and then clean the impurities accumulated in the convex cover 71. The interior of the convex cover 71 is fixedly connected to a guide block 72 that guides impurities that slide off the filter screen 61 into the convex cover 71. The guide block 72 allows impurities on the filter screen 61 to slide into the convex cover 71 due to gravity.

[0031] In this embodiment, when it is necessary to use the fresh air system filtering equipment, such as Figure 1 As shown, the air is first fed into the primary filter mechanism 2 through the air inlet pipe 10. After the air in the primary filter mechanism 2 is filtered for the first time, it will flow to the secondary filter mechanism 3 and the advanced filter mechanism 4 in sequence and be filtered multiple times. Figure 2 As shown, after being filtered by the filter 61 on the first sliding filter plate 6, many large particles of impurities will be attached to the filter 61. However, as the impurities on the first filter 61 are too many, the air passing through it will decrease, and the airflow passing through the first filter 61 will decrease. At this time, the wind direction sensor 21 on one end of the primary filter mechanism 2 senses that the airflow has decreased, which means that the running filter 61 is blocked. The wind direction sensor 21 will send a signal to the controller, and after the controller is started, it will send an instruction to the multi-stage cylinder 81 in the support cover 8. After the multi-stage cylinder 81 is started, it drives the H-shaped bracket 9 to move, and the H-shaped bracket 9 drives a pair of sliding filter plates 6 to move, so that the used filter 61 can be retracted into the shield 7. The unused filter 61 will move to block the primary filter mechanism 2, and then take over the previous filter 61 to filter large particles of impurities. The filter 61 that enters the shield 7 is pressed by the brush 74 inside the shield 7, pushing large impurities on the filter 61 into the convex shield 71. Guided by the guide block 72, the large impurities fall to the inner bottom wall of the convex shield 71 due to gravity. The cleaned filter 61 can now be reused, and the filter 61 waiting to be used can be blocked again, so that they can be reused alternately. Finally, a vacuum cleaner can be inserted into the cleaning port 73 to clean the impurities accumulated in the convex shield 71, which is convenient and quick.

[0032] The preferred embodiments of the present invention described above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A filtering device for a fresh air system, comprising a clean room (1) and a primary filtering mechanism (2), a secondary filtering mechanism (3) and a high-level filtering mechanism (4) arranged on the clean room (1) and connected in sequence, characterized in that: Also includes: A pair of sliding filter plates (6) are slidably arranged in the primary filter mechanism (2), one end of the sliding filter plate (6) is provided with a filter screen (61) for filtering large particles of impurities in the air, and the other end of the sliding filter plate (6) is provided with a through hole (62) for air to pass through; A driving mechanism installed at one end of the primary filtering mechanism (2) for staggering the filter screens (61) on the sliding filter plate (6) after reducing the wind speed; A shield (7) is fixedly mounted on the primary filter mechanism (2) and is used to cover the sliding filter plate (6). A brush (74) for removing impurities from the filter screen (61) is fixedly connected to the interior of the shield (7).

2. The filter device for fresh air system according to claim 1, characterized in that: The driving mechanism comprises a wind direction sensor (21) fixedly connected to one end of the primary filtering mechanism (2) close to the secondary filtering mechanism (3); a support cover (8) is fixedly connected to the middle outer wall of the primary filtering mechanism (2); a multi-stage cylinder (81) connected to the output end of a controller is provided inside the support cover (8); and an input end of the controller is connected to the wind direction sensor (21).

3. The filter device for fresh air system according to claim 2, characterized in that: The piston rod of the multi-stage cylinder (81) is movably passed through the primary filtering mechanism (2) and is fixedly connected to an H-shaped bracket (9). Both ends of the H-shaped bracket (9) are fixedly connected to corresponding sliding filter plates (6).

4. The filter device for fresh air system according to claim 1, characterized in that: One end of the blocking cover (7) is fixedly connected to a convex cover (71) for receiving impurities on the sliding filter plate (6), and the interior of the convex cover (71) is fixedly connected to a guide block (72) for guiding impurities sliding off the filter screen (61) into the convex cover (71).

5. The filter device for fresh air system according to claim 4, characterized in that: The convex cover (71) is provided with a cleaning port (73) for cleaning impurities in the convex cover (71).

6. The filter device for fresh air system according to claim 1, characterized in that: Connecting pipes (234) are provided between the primary filtering mechanism (2), the intermediate filtering mechanism (3) and the high-level filtering mechanism (4).

7. The filter device for fresh air system according to claim 1, characterized in that: The clean room (1) is provided with a conveying mechanism (5) for conveying the air passing through the high-grade filtering mechanism (4) into the clean room (1).

8. The filter device for fresh air system according to claim 1, characterized in that: An end of the primary filtering mechanism (2) away from the secondary filtering mechanism (3) is fixedly connected to an air inlet pipe (10) for air to pass through.

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