A filter device for a clean stairwell plenum system

Abstract

The utility model relates to the technical field of filtration, specifically relate to a kind of filter device for clean stairwell positive pressure air supply system, it include: purification tank, the inside lower position of purification tank is fixedly connected with partition block;Filter mechanism, the filter mechanism has multiple, the filter mechanism includes the air flow control assembly of being arranged on partition block upper end surface, the opposite sides in the inside of air flow control assembly are all provided with multiple hollow blocks, the stem of the hollow block is linear array and is provided with multiple locking assemblies, the inside of the hollow block is provided with the stretching assembly of control locking assembly moves in hollow block. Through the air flow control assembly, locking assembly, stretching assembly and impurity filter component in filter mechanism, so as to utilize air flow control assembly and adjust opening number according to the quantity of impurity, realize the different filtering effect of different impurity quality according to different impurity quality, so as to optimize air filtration effect, ensure that impurity can be effectively treated regardless of how much.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, specifically to a filtration device for a positive pressure air supply system in a clean stairwell. Background Technology

[0002] The filtration system of a positive pressure air supply system in a clean stairwell typically consists of pre-filters, medium-efficiency filters, and high-efficiency filters working together. The pre-filter can intercept large particles of dust and hair larger than 5μm and is generally installed at the fresh air inlet as the first line of defense in the system. The medium-efficiency filter filters 1-5μm particles through physical interception and electrostatic adsorption, further purifying the air after the pre-filter. The high-efficiency filter can filter tiny particles of 0.1-0.3μm and is installed at the end of the system. It is the core component for ensuring the cleanliness of the air in the stairwell. Through the coordinated work of these filters, the air supplied to the clean stairwell is guaranteed to be pure and meet standards in all aspects.

[0003] Existing pre-filters in positive pressure ventilation systems, by maintaining a uniform filtration path, present numerous problems when faced with varying quantities of large particulate impurities in outdoor air at different times and stages. Firstly, they cannot flexibly adjust the filtration path based on changes in impurity levels. When impurities are abundant, the established filtration path becomes ineffective, leading to a buildup of impurities on the filter and hindering subsequent air intake. Secondly, they cannot adjust filtration efficiency based on impurity levels. When impurities are scarce, conventional filtration continues, resulting in resource waste, while filtration efficiency fails to improve with increased impurities, making it difficult to guarantee air quality entering the system. Furthermore, pre-filters lack self-cleaning capabilities. The continuous accumulation of impurities not only reduces filtration efficiency but also requires frequent manual cleaning and maintenance, increasing labor costs and maintenance difficulty. Over time, this negatively impacts the stable operation of the entire positive pressure ventilation system. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a filtration device for a positive pressure air supply system in a clean stairwell, which effectively solves the problem that existing technologies cannot flexibly adjust the filtration path and effect according to changes in the amount of large particles of impurities outdoors.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a filtration device for a positive pressure air supply system in a clean stairwell, comprising:

[0007] A purification box, wherein a partition block is fixedly connected to the lower part of the interior of the purification box;

[0008] The filter mechanism has multiple components, including an airflow control component disposed on the upper end face of a partition block. Multiple hollow blocks are disposed on opposite sides inside the airflow control component. Multiple locking components are linearly arrayed on the rods of the hollow blocks. A stretching component is disposed inside the hollow blocks to control the movement of the locking components within the hollow blocks. Impurity filtering components are disposed on opposite sides inside the airflow control component.

[0009] The impurity adsorption mechanism includes two adsorption components and a diversion component disposed inside the airflow control component and located between two impurity filtration components. The diversion component is located between the two adsorption components. Each adsorption component is provided with an electrostatic bar. The bottom of the airflow control component is provided with a blocking component corresponding to the two adsorption components. The bottom of the purification box is provided with a lifting component.

[0010] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0011] 1. Through the airflow control component, locking component, stretching component, and impurity filtering component in the filtration mechanism, the number of filtration components that open can be adjusted according to the amount of large particulate impurities in the outdoor air. The number of airflow control components that open determines the filtration effect of the outdoor air, while the locking and stretching components are used to control the number of airflow control components that open. The impurity filtering component filters out larger fixed impurities such as hair and feathers in the air. By adjusting the number of opening components according to the amount of impurities, the airflow control component can change the filtration effect according to the different amounts of impurities, thereby optimizing the air filtration effect and ensuring that impurities are effectively treated regardless of their quantity.

[0012] 2. Through the adsorption component, clogging component, diversion component, and lifting component in the impurity adsorption mechanism, small fixed impurities such as dust entering the airflow control component can be filtered. The adsorption component is used to adsorb small fixed impurities such as dust. When the adsorption component and the impurity filtration component become saturated, the clogging component will open using the lifting component, thereby transferring the saturated impurities in the adsorption component and the impurity filtration component to the dust collection equipment through the interconnection pipe. When the adsorption component becomes saturated, the clogging component will automatically clean itself through the lifting device, preventing the filtration system from failing due to saturation, ensuring long-term stable working performance, reducing manual maintenance and downtime. The diversion component optimizes the contact between air and the filtration component, improving filtration efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall side structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall bottom structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the purification box of this utility model;

[0018] Figure 5 This is a schematic diagram showing the positional distribution of the filtration mechanism of this utility model;

[0019] Figure 6 This is a schematic diagram of the overall structure of the airflow control component of this utility model;

[0020] Figure 7 This is a side view of the airflow control component of this utility model;

[0021] Figure 8 This is a schematic diagram of the overall internal structure of the filter box of this utility model;

[0022] Figure 9 This is a schematic diagram of the internal structure of the filter box of this utility model;

[0023] Figure 10 This is a schematic diagram of the locking component of this utility model;

[0024] Figure 11 This is a schematic diagram of the structure of the tensioning component of this utility model;

[0025] Figure 12 This is a schematic diagram of the structure of the impurity filtration assembly of this utility model;

[0026] Figure 13 This is a schematic diagram of the structure of the impurity filtration component of this utility model;

[0027] Figure 14 This is a schematic diagram of the overall structure of the impurity adsorption mechanism of this utility model;

[0028] Figure 15 This is a schematic diagram of the overall structure of the current distribution component of this utility model.

[0029] Reference numerals: 1. Purification box; 11. Inlet pipe; 12. Air distribution block; 13. Outlet pipe; 14. Divider block; 15. Interconnecting pipe; 2. Filtration mechanism; 21. Square tube; 211. Connecting pipe; 22. Airflow control assembly; 221. Filter box; 222. Electrically controlled one-way valve; 223. Rotating plate; 23. Hollow block; 24. Locking assembly; 241. Slider; 242. Spring; 243. First fixing block; 25. Tensioning assembly; 251. Rope; 252. Elastic rope; 26. Impurity filtration assembly; 261. Fixing frame; 262. Arc-shaped strip; 263. Elastic plate; 2 64. Attachment rod; 3. Impurity adsorption mechanism; 31. Adsorption assembly; 311. Inner curved tube; 312. Rhomboid hole; 213. Protrusion; 314. Fixed connector; 315. Second fixed block; 32. Static bar; 33. Blocking assembly; 331. Blocking block; 332. Linkage rod; 34. Diversion assembly; 341. Driver; 342. Main shaft; 343. Spiral blade; 344. Support rod; 345. Fixed disc; 346. Elastic rod; 347. ∧-shaped cover; 35. Lifting assembly; 351. I-shaped block; 352. Connecting rod; 353. Electric lifting rod; 4. Demagnetizing rod. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] The present invention will be further described below with reference to the embodiments.

[0032] Example: Refer to Figures 1 to 15 A filtration device for a positive pressure air supply system in a clean stairwell, comprising:

[0033] Purification box 1, with a partition block 14 fixedly connected to the lower part of the interior of purification box 1;

[0034] The filter mechanism 2 has multiple components. The filter mechanism 2 includes an airflow control component 22 disposed on the upper end face of the partition block 14. Multiple hollow blocks 23 are disposed on opposite sides inside the airflow control component 22. Multiple locking components 24 are linearly arrayed on the rods of the hollow blocks 23. A stretching component 25 is disposed inside the hollow blocks 23 to control the movement of the locking components 24 in the hollow blocks 23. Impurity filtering components 26 are disposed on opposite sides inside the airflow control component 22.

[0035] The impurity adsorption mechanism 3 includes two adsorption components 31 and a diversion component 34 disposed inside the airflow control component 22 and located between two impurity filtration components 26. The diversion component 34 is located between the two adsorption components 31. Each adsorption component 31 is provided with an electrostatic bar 32. The bottom of the airflow control component 22 is provided with a blocking component 33 corresponding to the two adsorption components 31. The bottom of the purification box 1 is provided with a lifting component 35.

[0036] The airflow control component 22 in the filter mechanism 2 can be used to control the amount of outdoor air passing through the filter mechanism 2, while the hollow block 23 can provide an installation position for the locking component 24 and the tensioning component 25, thereby using the tensioning component 25 to drive the locking component 24 to lock the airflow control component 22.

[0037] Reference Figures 1 to 3 An air inlet pipe 11 and an air outlet pipe 13 are fixedly connected to both sides of the purification box 1 along its length. The other end of the air inlet pipe 11 is connected to the previous process, and an air detector is installed inside the air inlet pipe 11. The other end of the air outlet pipe 13 is connected to the next process. An air distribution block 12 is fixedly connected to the inner wall of the purification box 1 near the air inlet pipe 11, and the input end of the air distribution block 12 is connected to the air inlet pipe 11. At least one interconnecting pipe 15 is fixedly connected to the bottom of the purification box 1. A dust collection device is modularly installed at the other end of the interconnecting pipe 15. A controller is installed on the side of the purification box 1, and the air detector is electrically connected to the controller.

[0038] Multiple demagnetizing rods 4 are fixedly connected to the upper end face of the separator 14.

[0039] The outdoor air from the previous process can be transferred into the purification box 1 through the air inlet pipe 11. The air detector installed in the air inlet pipe 11 can detect the amount of impurities in the outdoor air, and the number of filter mechanism 2 and impurity adsorption mechanism 3 used can be controlled by the detection results of the air detector.

[0040] Reference Figure 2 , Figures 4 to 6 The upper end face of the purification box 1 is fixedly connected to multiple square tubes 21, and adjacent square tubes 21 are connected to each other through pipes. The square tubes 21 correspond to each group of filter mechanisms 2. The square tubes 21 near the air outlet pipe 13 are fixedly connected to a connecting pipe 211, and the other side of the connecting pipe 211 is fixedly connected to the air outlet pipe 13.

[0041] The airflow control assembly 22 includes a filter box 221 fixedly connected to the upper end face of the partition block 14. An electrically controlled one-way valve 222 is provided on the upper end face of the filter box 221. The output end of the electrically controlled one-way valve 222 is connected to the filter box 221. The input end of the electrically controlled one-way valve 222 passes through the purification box 1 and is connected to the square tube 21. The filter box 221 has multiple air holes arranged in a rectangular array on both sides of the hollow block 23, and each air hole is rotatably connected to a rotating plate 223.

[0042] When the square tube 21 and the connecting tube 211 are opened, the air in the outlet tube 13 is drawn into the corresponding filter box 221, thereby cleaning the impurity filtration component 26 and the adsorption component 31 in the current filter box 221.

[0043] Reference Figures 9 to 10 The hollow block 23 is fixedly connected between two adjacent rotating plates 223. The locking assembly 24 includes a slider 241 that runs through the width of the hollow block 23 and is slidably connected to the hollow block 23. The hollow block 23 is fixedly connected to two sides below the slider 241 with first fixing blocks 243. The slider 241 and the opposite side of the first fixing blocks 243 are fixedly connected with springs 242.

[0044] By using the slider 241 in the locking assembly 24 to slide down in the hollow block 23, the slider 241 can lock the rotating plate 223, thereby restricting the rotation of the rotating plate 223 and sealing the current filter box 221 to prevent outdoor air from entering the current filter box 221.

[0045] Reference Figures 10 to 11 The stretching assembly 25 includes an elastic rope 252 fixedly connected to the top of the hollow block 23. The other end of the elastic rope 252 is fixedly connected to a slider 241 located near the elastic rope 252 and inside the hollow block 23. A rope 251 is fixedly connected to the other side of the slider 241 located inside the hollow block 23. The other end of the rope 251 is fixedly connected to the slider 241 below and the filter box 221 and the separator block 14 extending below the separator block 14.

[0046] The lifting assembly 35 can provide tension to the rope 251 in the tensioning assembly 25, thereby causing the rope 251 to pull the slider 241 down through the hollow block 23, so as to lock the slider 241 onto the rotating plate 223.

[0047] Reference Figure 8 , Figures 12 to 13The impurity filtration assembly 26 includes a fixed frame 261 fixedly connected to the inner wall of the filter box 221. Multiple arc-shaped strips 262 are linearly arrayed and fixedly connected inside the fixed frame 261. The arc surface of each arc-shaped strip 262 faces the hollow block 23. An elastic sheet 263 is fixedly connected to the other side of the arc-shaped strip 262. Multiple attachment rods 264 are fixedly connected to the opposite face of two adjacent elastic sheets 263 in a rectangular array.

[0048] The elastic sheet 263 in the impurity filter assembly 26 can vibrate when outdoor air enters the filter box 221, while the attachment rod 264 can filter larger fixed impurities such as hair and feathers.

[0049] Reference Figure 8 , Figure 14 The adsorption assembly 31 includes multiple alternating inner curved tubes 311 and a fixed connector 314 fixedly connected to the upper end face of the separator 14 from bottom to top. The fixed connector 314 is located on the opposite face of two adjacent inner curved tubes 311. The outer peripheral surface of each inner curved tube 311 is provided with multiple rhomboid holes 312 in a rectangular array. The outer peripheral surface of each inner curved tube 311 is fixedly connected with multiple protrusions 213 in a rectangular array. The rhomboid holes 312 and protrusions 213 are alternately located on the outer peripheral surface of the inner curved tube 311. The outer peripheral surface of the fixed connector 314 facing the inner wall of the filter box 221 is fixedly connected with a second fixing block 315. The other side of the second fixing block 315 is fixedly connected to the inner wall of the filter box 221.

[0050] The adsorption component 31 uses the diamond-shaped holes 312 and protrusions 213 of the inner curved tube 311 to adsorb small fixed impurities such as dust in the outdoor air, while the fixed connector 314 uses the second fixing block 315 to connect two adjacent inner curved tubes 311 and fix the inner curved tubes 311.

[0051] Reference Figures 14 to 15 The electrostatic bar 32 is embedded in the middle of multiple inner curved tubes 311 and the fixed connector 314;

[0052] The diversion assembly 34 includes a driver 341 fixedly connected to the bottom of the filter box 221 and electrically connected to the controller. The output end of the driver 341 is fixedly connected to a main shaft 342. Multiple support rods 344 are fixedly connected to the shaft of the main shaft 342 in a spiral array from bottom to top. A spiral blade 343 is sleeved on the shaft of the main shaft 342. The other end of the support rod 344 is fixedly connected to the inner wall of the spiral blade 343. A fixed disk 345 is fixedly connected to the end of the main shaft 342 away from the driver 341. An elastic rod 346 is rotatably connected to the other side of the fixed disk 345. A ∧-shaped cover 347 is fixedly connected to the other end of the elastic rod 346. Both sides of the ∧-shaped cover 347 are fixedly connected to the inner top of the filter box 221.

[0053] The electrostatic bar 32 can be used to apply static electricity to the inner curved tube 311, thereby making the inner curved tube 311 have static electricity. The drive 341 drives the main shaft 342 to rotate, thereby driving the spiral blade 343 to rotate. The rotating spiral blade 343 allows the outdoor air to fully contact the adsorption components 31 on both sides.

[0054] Reference Figures 6 to 7 The blocking component 33 includes a blocking block 331 that is slidably connected to the bottom of the partition block 14. A sealing ring is fixedly connected to the upper end face of the blocking block 331, and a linkage rod 332 is fixedly connected to the bottom of the blocking block 331.

[0055] The lifting assembly 35 includes an I-shaped block 351 fixedly connected to the other end of each rope 251. A connecting rod 352 is fixedly connected to the center of the bottom of the I-shaped block 351. The other side of the linkage rod 332 is fixedly connected to the outer peripheral surface of the connecting rod 352. An electric lifting rod 353 is fixedly connected to the bottom of the purification box 1. The telescopic end of the electric lifting rod 353 is fixedly connected to the other end of the connecting rod 352, and the electric lifting rod 353 is electrically connected to the controller.

[0056] By using the electric lifting rod 353 in the lifting assembly 35 to connect with the I-shaped block 351 and the connecting rod 352, the blocking block 331 and the rope 251 can be pulled synchronously.

[0057] The working principle of this utility model is as follows:

[0058] Step 1: First, outdoor air is introduced into the purification chamber 1 through the air intake pipe 11 (which can be a suction fan, centrifugal fan, or other equipment that draws in outdoor air). The air detector inside the air intake pipe 11 monitors the incoming outdoor air in real time to obtain the amount of impurities in the outdoor air entering the purification chamber 1 and transmits the data to the controller. The air distribution block 12 evenly disperses the incoming outdoor air, making the outdoor air more evenly distributed in the purification chamber 1, so that the outdoor air can come into contact with the filter mechanism 2 at each location.

[0059] The controller controls the extension and retraction of the control lifting component 35 at different positions based on the impurity content data transmitted by the air detector, thereby opening or closing the airflow control component 22 of the filter mechanism 2 at different positions.

[0060] In practical applications, by combining the detection data from air detectors with the air quality requirements of clean stairwells, the controller can be customized to control the number of airflow control components 22 activated at each position of the lifting component 35.

[0061] The following are three different impurity levels:

[0062] 1) Low impurity content scenario: Assuming that the design specifications of this filtration device are such that when the airflow control component 22 of each filtration mechanism 2 is fully open, it can handle air containing 5 mg of impurities per cubic meter of air. However, the clean stairwell requires that the impurity content of the incoming air does not exceed 1 mg per cubic meter. When the air detector detects that the amount of impurities transmitted to the purification box 1 through the air inlet pipe 11 is 2 mg per cubic meter, the controller will control a lifting component 35 to open the airflow control component 22 in the corresponding filtration mechanism 2. At this time, the impurity filtration component 26 and the adsorption component 31 of the filtration mechanism 2 can effectively filter the air, which can meet the filtration requirements, reduce equipment energy consumption, and reduce unnecessary component wear.

[0063] 2) Moderate impurity content: If the air detector detects that the amount of impurities transmitted to the purification chamber 1 through the air inlet pipe 11 is 8 mg per cubic meter, according to the processing capacity of the filtration device, a single filtration mechanism 2 is insufficient to meet the filtration requirements. In order to ensure the purification effect, the controller controls two or more lifting components 35 to open the airflow control component 22 in the corresponding filtration mechanism 2, thereby enabling two or more filtration mechanisms 2 to work simultaneously. This can improve the overall filtration efficiency, ensure that the treated air can meet the air quality standards of the clean stairwell, and also avoid the filtration effect and service life being affected by the saturation of a single filtration mechanism 2.

[0064] 3) High impurity content: When the air detector detects that the amount of impurities transmitted to the purification box 1 through the air inlet pipe 11 is 15 mg per cubic meter, in order to ensure that the filtered air meets the standards, the controller controls three or more lifting components 35 to open the airflow control components 22 in the corresponding filter mechanism 2. The specific number needs to be adjusted according to the actual filtration effect and equipment performance. If the purified air still does not meet the standard after opening 3 filter mechanisms 2, the number of filter mechanisms opened can be further increased until the air quality requirements of the clean stairwell are met, thus ensuring the air environment quality of the stairwell.

[0065] The device opens the corresponding number of filter mechanisms 2 according to the different amounts of impurities in the outdoor air. This solves the problem that existing pre-filters cannot adjust the filtration path according to changes in the amount of impurities. This device opens one filter mechanism 2 when the impurity content is low, reducing unnecessary filtration steps; opens two or more when the impurity content is medium; and opens three or more when the impurity content is high. This avoids the accumulation of impurities affecting the air intake.

[0066] The air detector monitors the air inside the intake pipe 11 in real time. Once it detects impurities, it transmits a signal to the controller. After receiving the signal, the controller makes a judgment based on the internally preset correspondence between the amount of impurities and the number of times the filter mechanism is activated, and sends a control command to the lifting assembly 35. Upon receiving the command, the lifting assembly 35 starts to work, with the electric lifting rod 353 extending. When the electric lifting rod 353 extends, it pulls the connecting rod 352 connected to it. The connecting rod 352 drives the I-shaped block 351 to move upward. At this time, the upward movement of the I-shaped block 351 will loosen the rope 251 connected to it. As the rope 251 loosens, the slider 241, which was originally tightened by the rope 251, is no longer restrained by the rope 251. The provided tension causes the slider 241 to move upward under the elastic force of the spring 242. The spring 242 was previously compressed because the slider 241 was pulled down by the rope 251. At this time, it releases its elastic potential energy and pushes the slider 241 to reset. After the slider 241 moves upward, it releases the lock on the rotating plate 223. When the slider 241 no longer blocks the rotation of the rotating plate 223, the pressure difference between the inside and outside of the filter box 221 caused the rotating plate 223 to rotate as the air intake pipe 11 continuously delivers outdoor air. As the rotating plate 223 rotates, the air vents gradually open, and air can enter the filter box 221, thereby achieving the filtration of impurities in the air by the impurity filtration component 26, the adsorption component 31 and the lifting component 35 in the filter box 221.

[0067] When air enters the filter box 221, it first impacts the arc-shaped strip 262 and the elastic sheet 263. The elastic sheet 263 vibrates under the impact of the airflow. This vibration helps to dislodge some large particles that were originally attached to other objects. At the same time, the shape design of the arc-shaped strip 262 can change the direction of the airflow, making the air flow irregular and increasing the probability of large particles colliding with the elastic sheet 263 and other components.

[0068] Meanwhile, during the airflow, larger fixed impurities such as hair and feathers, due to their large mass and inertia, are difficult to change direction easily with the airflow. They will collide with the attachment rod 264 and be intercepted. The attachment rod 264 usually has a certain degree of roughness, which enables it to better capture and attach these large particles of impurities.

[0069] Step 2: After the air is initially filtered by the impurity filter component 26, the driver 341 of the diversion component 34 is started under the control of the controller, thereby driving the main shaft 342 to rotate. When the main shaft 342 rotates, it drives the support rod 344 fixedly connected to the spiral array on the shaft to rotate synchronously. The other end of the support rod 344 is connected to the inner wall of the spiral blade 343, so that the spiral blade 343 rotates along with it. When the spiral blade 343 rotates, according to the principle of fluid mechanics, it stirs and diverts the incoming air. Under the push of the spiral blade 343, the air is dispersed to both sides and flows evenly to the two adsorption components 31, so that the air is in full contact with the adsorption components 31 and the adsorption efficiency of the adsorption components 31 for impurities in the air is improved.

[0070] When air comes into contact with the adsorption component 31, the controller simultaneously activates the electrostatic bar 32. The electrostatic bar 32 causes the inner curved tube 311 and the fixed connector 314 to become electrostatically charged. When air flows through the adsorption component 31, smaller fixed impurities such as dust in the air are attracted to the outer circumferential surface of the inner curved tube 311 by electrostatic attraction. The outer circumferential surface of the inner curved tube 311 has a rectangular array of multiple rhomboid holes 312, and the rectangular array is fixedly connected with multiple protrusions 213. The rhomboid holes 312 and protrusions 213 are alternately distributed to increase the density of air. The increased contact area with air improves the adsorption effect of impurities. The inner curved tube 311 adsorbs impurities through the diamond-shaped hole 312 and the protrusion 213. The fixed connector 314 connects adjacent inner curved tubes 311, allowing air to flow between each inner curved tube 311, further increasing the chance of impurities contacting and being adsorbed by the adsorption component 31. At the same time, the fixed connector 314 is fixedly connected to the inner wall of the filter box 221 through the second fixing block 315 on its outer peripheral surface, ensuring the stability of the structure of the adsorption component 31.

[0071] Note: When the air intake pipe 11 delivers outdoor air into the filter box 221, the demagnetizing rod 4 will eliminate the static electricity present on the surface of the filter box 221 of each airflow control component 22 in the purification box 1. This prevents 1-5μm impurity particles that need to be filtered by the medium-efficiency filter and 0.1-0.3μm impurity particles that need to be filtered by the high-efficiency filter from adhering to the filter box 221. Because the electrostatic rod 32 causes the adsorption component 31 to be statically charged, thereby adsorbing smaller fixed impurities such as dust, in such a static environment, the surface of the filter box 221 is easily charged with static electricity due to electrostatic induction. Once the filter box 221 is charged with static electricity, electrostatic adsorption will occur, causing impurities filtered by the medium-efficiency filter and the high-efficiency filter to be adsorbed onto the surface of the filter box 221 under the action of electrostatic attraction. Over time... As impurities accumulate, they affect airflow within the filter box 221, reducing filtration efficiency and even impacting the overall performance of the filtration system. When the demagnetizing rod 4 demagnetizes, the controller activates it when outdoor air is supplied to the filter box 221 via the air inlet pipe 11. The demagnetizing rod 4 releases a charge opposite to the static electricity on the surface of the filter box 221. Through charge neutralization, the static electricity on the surface of the filter box 221 is eliminated. This eliminates the electrostatic attraction that attracts impurities, preventing them from adhering to the surface of the filter box 221. This ensures the cleanliness of the filter box 221 surface, allowing air to flow smoothly within the filter box 221 and maintaining the efficient operation of the entire filtration system.

[0072] Step 3: When the impurity filtration component 26 and adsorption component 31 in the filter box 221 become saturated, the controller starts to control the electric lifting rod 353 to retract, pulling the connecting rod 352 connected to it. The connecting rod 352 drives the I-shaped block 351 to move downward. The movement of the I-shaped block 351 will tighten the rope 251 connected to it. At the same time, the rope 251 pulls the slider 241 located inside the hollow block 23 to slide down. During this process, the elastic rope 252 at the top of the hollow block 23 is stretched, and the springs 242 on both sides of the hollow block 23 below the slider 241 are compressed.

[0073] When the slider 241 slides down, it will jam the rotating plate 223 installed in the air holes on both sides of the hollow block 23 in the filter box 221, restricting its rotation. Since the hollow block 23 is fixedly connected between the two adjacent rows of rotating plates 223, the position change of the slider 241 can directly act on the rotating plate 223, preventing the rotating plate 223 from rotating under the pressure difference inside and outside the filter box 221, thereby locking the rotating plate 223. After the rotating plate 223 is locked, the air holes are closed, and air cannot enter the filter box 221. At this time, the filter box 221 stops filtering the air.

[0074] At the same time, when the electric lifting rod 353 retracts and drives the I-shaped block 351 to move downward, since the I-shaped block 351 is connected to the linkage rod 332 of the blocking component 33, the linkage rod 332 also moves downward, thereby pulling the blocking block 331 down. The sealing ring on the upper end face of the blocking block 331 separates from the inner curved tube 311, allowing the adsorption component 31 and the impurity filter component 26 to connect with the interconnecting pipe 15.

[0075] With the impurity filter assembly 26 connected to the interconnecting pipe 15, the vacuum cleaner, modularly installed at the other end of the interconnecting pipe 15, starts up, generating strong suction. Under the action of suction, the saturated impurities accumulated on the adsorption assembly 31 and the impurity filter assembly 26 are sucked into the interconnecting pipe 15 (the current locking assembly 24 is locked to the rotating plate 223 in the filter box 221), and then transported to the vacuum cleaner through the interconnecting pipe 15, thereby cleaning the filter assembly. During the cleaning process, the corresponding electrically controlled one-way valve 222 opens under the control of the controller. Since the square tube 21 corresponds to each group of filter mechanisms 2, and adjacent square tubes 21 are interconnected through pipes, and the square tube 21 near the air outlet pipe 13 is fixedly connected to the connecting pipe 211, when the electrically controlled one-way valve 222 opens, the air in the air outlet pipe 13, under the action of pressure and the suction of the vacuum cleaner, enters the square tube 21 through the connecting pipe 211, and then passes through the air outlet pipe 13. The air enters the filter box 221 through the opened electronically controlled one-way valve 222. This air washes over the impurity filter assembly 26 and the adsorption assembly 31 inside the filter box 221, further loosening the impurities that are difficult to be directly sucked away by the vacuum cleaner, making them easier to be sucked into the interconnecting pipe 15, thus enhancing the cleaning effect. During cleaning, the driver 341 in the diversion assembly 34 stops working, the main shaft 342 stops rotating, and the spiral blade 343 also stops rotating. At this time, the ∧-shaped structure of the ∧-shaped cover 347 causes the incoming flushing airflow to be diverted to both sides along its surface, so that the airflow is evenly distributed to different parts of the impurity filter assembly 26 and the adsorption assembly 31, avoiding dead corners and improving the cleaning effect. At the same time, when the airflow impacts the ∧-shaped cover 347, the elastic rod 346 undergoes elastic deformation to absorb part of the impact force, buffering the rapidly entering airflow and preventing it from forcefully impacting the impurity filter assembly 26 and the adsorption assembly 31, thus protecting the filter assembly from damage.

[0076] The differential pressure sensor is used to detect saturation of the impurity filter component 26 and the adsorption component 31. When the filter component is not saturated, the airflow resistance is small and the pressure difference before and after the filter component is also small. As impurities accumulate on the filter component, the airflow resistance gradually increases and the pressure difference before and after the filter component increases accordingly. The differential pressure sensor determines the working status by measuring the pressure difference before and after the filter component. When the pressure difference reaches the preset saturation threshold, it indicates that the filter component may be saturated.

[0077] After cleaning is completed, the electric lifting rod 353 retracts again, allowing the current filter mechanism 2 to re-enter the next filtration cycle. The clean air, after being processed by the filter mechanism 2 and the impurity adsorption mechanism 3, is delivered to the next process through the air outlet pipe 13.

[0078] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A filtration device for a positive pressure air supply system in a clean stairwell, characterized in that, include: A purification box (1) has a partition block (14) fixedly connected to the lower part of its interior; The filter mechanism (2) has multiple components. The filter mechanism (2) includes an airflow control component (22) disposed on the upper end face of the partition block (14). Multiple hollow blocks (23) are disposed on opposite sides inside the airflow control component (22). Multiple locking components (24) are linearly arrayed on the rod body of the hollow block (23). A stretching component (25) is disposed inside the hollow block (23) to control the movement of the locking component (24) in the hollow block (23). Impurity filtering components (26) are disposed on opposite sides inside the airflow control component (22). The impurity adsorption mechanism (3) includes two adsorption components (31) and a diversion component (34) disposed inside the airflow control component (22) and located between two impurity filtration components (26). The diversion component (34) is located between the two adsorption components (31). Each adsorption component (31) is provided with an electrostatic bar (32). The bottom of the airflow control component (22) is provided with a blocking component (33) corresponding to the two adsorption components (31). The bottom of the purification box (1) is provided with a lifting component (35).

2. The filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The purification box (1) has an air inlet pipe (11) and an air outlet pipe (13) fixedly connected to both sides along its length. The other end of the air inlet pipe (11) is connected to the previous process, and an air detector is installed inside the air inlet pipe (11). The other end of the air outlet pipe (13) is connected to the next process. A gas distribution block (12) is fixedly connected to the inner wall of the purification box (1) near the air inlet pipe (11), and the input end of the gas distribution block (12) is connected to the air inlet pipe (11). At least one interconnecting pipe (15) is fixedly connected to the bottom of the purification box (1). A dust collection device is modularly installed at the other end of the interconnecting pipe (15). A controller is installed on the side of the purification box (1), and the air detector is electrically connected to the controller. Multiple demagnetizing rods (4) are fixedly connected to the upper end face of the partition block (14).

3. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 2, characterized in that, The upper end face of the purification box (1) is fixedly connected with a plurality of square tubes (21), and two adjacent square tubes (21) are connected to each other through pipes. The square tubes (21) correspond to each group of filter mechanisms (2). The square tubes (21) near the air outlet pipe (13) are fixedly connected to a connecting pipe (211), and the other side of the connecting pipe (211) is fixedly connected to the air outlet pipe (13). The airflow control component (22) includes a filter box (221) fixedly connected to the upper end face of the partition block (14). An electrically controlled one-way valve (222) is provided on the upper end face of the filter box (221). The output end of the electrically controlled one-way valve (222) is connected to the filter box (221). The input end of the electrically controlled one-way valve (222) passes through the purification box (1) and is connected to the square tube (21). The filter box (221) is located on both sides of the hollow block (23) with multiple air holes arranged in a rectangular array, and each air hole is rotatably connected to a rotating plate (223).

4. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The hollow block (23) is fixedly connected between two adjacent columns of rotating plates (223). The locking assembly (24) includes a slider (241) that runs through the width direction of the hollow block (23) and is slidably connected to the hollow block (23). The hollow block (23) is fixedly connected to two sides below the slider (241) with first fixing blocks (243). The slider (241) and the opposite surface of the first fixing blocks (243) are fixedly connected with springs (242).

5. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The tensioning assembly (25) includes an elastic rope (252) fixedly connected to the top of the hollow block (23). The other end of the elastic rope (252) is fixedly connected to a slider (241) located near the elastic rope (252) and inside the hollow block (23). A rope (251) is fixedly connected to the other side of the slider (241) located inside the hollow block (23). The other end of the rope (251) is fixedly connected to the slider (241) below and the filter box (221), the separator (14) extending below the separator (14).

6. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The impurity filtration assembly (26) includes a fixed frame (261) fixedly connected to the inner wall of the filter box (221). Multiple arc-shaped strips (262) are fixedly connected in a linear array within the fixed frame (261). The arc surface of each arc-shaped strip (262) faces the hollow block (23). An elastic sheet (263) is fixedly connected to the other side of the arc-shaped strip (262). Multiple attachment rods (264) are fixedly connected in a rectangular array to the opposite surfaces of two adjacent elastic sheets (263).

7. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The adsorption assembly (31) includes a plurality of alternating inner curved tubes (311) and a fixed connector (314) fixedly connected to the upper end face of the separator (14) from bottom to top. The fixed connector (314) is located on the opposite face of two adjacent inner curved tubes (311). The outer peripheral surface of each inner curved tube (311) is provided with a plurality of rhomboid holes (312) in a rectangular array. The outer peripheral surface of each inner curved tube (311) is fixedly connected with a plurality of protrusions (213) in a rectangular array. The rhomboid holes (312) and protrusions (213) are alternately located on the outer peripheral surface of the inner curved tube (311). The outer peripheral surface of the fixed connector (314) facing the inner wall of the filter box (221) is fixedly connected with a second fixing block (315). The other side of the second fixing block (315) is fixedly connected to the inner wall of the filter box (221).

8. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The electrostatic bar (32) is embedded in the middle of the inner curved tubes (311) and the fixed connector (314); The diversion assembly (34) includes a driver (341) fixedly connected to the bottom of the filter box (221), and the driver (341) is electrically connected to the controller. The output end of the driver (341) is fixedly connected to a main shaft (342). The shaft of the main shaft (342) is spirally arrayed from bottom to top with multiple support rods (344). The shaft of the main shaft (342) is fitted with a spiral blade (343). The other end of the support rod (344) is fixedly connected to the inner wall of the spiral blade (343). The end of the main shaft (342) away from the driver (341) is fixedly connected to a fixed disk (345). The other side of the fixed disk (345) is rotatably connected to an elastic rod (346). The other end of the elastic rod (346) is fixedly connected to a ∧-shaped cover (347), and the two sides of the ∧-shaped cover (347) are fixedly connected to the inner top of the filter box (221).

9. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 1, characterized in that, The blocking assembly (33) includes a blocking block (331) slidably connected to the bottom of the partition block (14), a sealing ring being fixedly connected to the upper end face of the blocking block (331), and a linkage rod (332) being fixedly connected to the bottom of the blocking block (331).

10. A filtration device for a positive pressure air supply system in a clean stairwell according to claim 9, characterized in that, The lifting assembly (35) includes an I-shaped block (351) fixedly connected to the other end of each rope (251). A connecting rod (352) is fixedly connected to the center of the bottom of the I-shaped block (351). The other side of the linkage rod (332) is fixedly connected to the outer peripheral surface of the connecting rod (352). An electric lifting rod (353) is fixedly connected to the bottom of the purification box (1). The telescopic end of the electric lifting rod (353) is fixedly connected to the other end of the connecting rod (352), and the electric lifting rod (353) is electrically connected to the controller.

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