Self-adaptive variable air volume air filter

Abstract

The invention discloses a self-adaptive variable air volume air filter, and relates to the technical field of air purification equipment. The device comprises a filter box, a filter sleeve is rotatably mounted in the middle of the filter box, a lateral rotating shaft with a cleaning sleeve is circumferentially arranged on the outer side of the filter box, and an annular limiting groove is formed in the inner wall for the lateral rotating shaft to rotate; a central gear, a planetary gear and a planetary gear ring are arranged at the bottom of the filter box, the rotation form of the planetary gear ring and the planetary gear is controlled through a switching part, dust collection of the cleaning sleeve is achieved, and when the planetary gear ring rotates, the cleaning sleeve rotates around the filter sleeve to be switched in an extrusion mode when the filter hole cleaning planetary gear ring is fixed. The filter box is provided with an air inlet, an air outlet and a self-adaption assembly, and the distance between air inlet baffles can be adjusted to adapt to the air volume. A movable filter screen is arranged on the inner side of the filter sleeve, and the blocked part can be moved to the outer side to be cleaned. And the effects of efficient filtering and automatic cleaning are further achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air purification, and particularly relates to a self-adaptive variable air volume air filter. BACKGROUND

[0002] The air filter is a device for purifying air, removing particulate matter and pollutants therein, and is widely used in many fields such as industry, medicine, pharmacy, food processing, clean room, etc.

[0003] Taking the food processing industry as an example, in the flour and starch production link, the air filter is mainly used to separate the material and air, to ensure dust control and product quality in the production process. Common air filters include cloth bag dust filter, cyclone separator and air source controller. These devices play an important role in different stages of production, for example, in the crushing, drying and screening links, the air filter can effectively control dust emission and reduce environmental pollution.

[0004] A cyclone type air filter is disclosed in Chinese patent No. CN213725594U, which comprises a shell and a filter core, the filter core is detachably installed in the shell, the shell is provided with an air inlet and an air outlet, the front side of the shell is provided with a primary filtration mechanism, the primary filtration mechanism comprises a mounting plate, a cyclone unit and a dust removal assembly, the mounting plate and the cyclone unit are integrally formed with the shell, and the dust removal assembly is detachably installed at the corresponding position of the mounting plate; a partition plate is also detachably installed on the mounting plate, the partition plate, the mounting plate and the shell form an air inlet cavity, the shell is provided with a filter cavity, the dust removal assembly is provided with a cyclone cavity, the air inlet, the air inlet cavity, the cyclone cavity, the filter cavity and the air outlet are sequentially communicated, which can effectively filter out dust in the air, improve the filtering effect, prolong the maintenance and replacement period of the filter core of the air filter, and has simple structure, convenient installation and strong practicality.

[0005] However, the above-mentioned air filter still has some deficiencies in actual use: 1. The existing air filter mostly adopts a fixed filter screen structure, at this time, the dust will move with the equipment, causing the dust to accumulate on the surface of the filter screen, thereby causing the filter holes to be blocked, especially for light dust such as flour, which is easy to block the filter holes, and when the filter holes are blocked, the filter screen needs to be disassembled and maintained, and some devices can prolong the replacement period of the filter screen, but the prolonged replacement period is not ideal, which will cause the replacement period to be mismatched with the limit service life of the filter screen, so that the filter screen is replaced with a new one after being disassembled, which causes a certain waste.

[0006] 2. Secondly, when the existing air filter filters air, the airflow is in a "central aggregation" state in the filter sleeve, a large amount of dust directly penetrates from the middle of the filter sleeve, causing low utilization rate of the edge area of the filter screen, and the filter sleeve appears uneven filtering after a long time of work.

[0007] Therefore, under the above-mentioned point of view, the existing air filter still has room for improvement. SUMMARY

[0008] In order to solve the above problems, the present application provides a self-adaptive variable air volume air filter, which adopts the following technical scheme: A self-adaptive variable air volume air filter, comprising a filter box, a filter sleeve is rotatably installed in the middle of the filter box, a plurality of lateral rotating shafts are installed in the filter box and located on the circumferential direction of the outer side wall of the filter sleeve, an annular limiting groove is opened on the inner wall of the filter box for the rotation of the lateral rotating shaft, and a cleaning sleeve is installed on the lateral rotating shaft.

[0009] The filter box is symmetrically provided with an air inlet and an air outlet along the length direction.

[0010] A central gear is rotatably arranged on the vertical direction of the filter sleeve at the bottom of the filter box, a plurality of groups of planetary gears corresponding to the cleaning sleeve are movably arranged on the side wall of the central gear, the central gear is connected with the filter sleeve, the planetary gears are connected with the cleaning sleeve, and a planetary gear ring is jointly installed on the outer side of the planetary gears.

[0011] A switching component is arranged between the planetary gears corresponding to the cleaning sleeve and the planetary gear ring, and the cleaning sleeve is switched back and forth between the two modes of dust collection and cleaning of the surface of the filter sleeve through the switching component.

[0012] Preferably, the switching component comprises a driving motor installed on the bottom of the filter box through a motor support, and the output end of the driving motor is connected with the central gear upward.

[0013] A first cross-shaped clamping groove is further arranged between the bottom of the filter box and the planetary gears, a cross-shaped block is jointly inserted into the first cross-shaped clamping groove between the bottom of the filter box and the planetary gears, a connecting column is rotatably installed on the cross-shaped block, and a first electric push rod is installed on the end of the connecting column away from the cross-shaped block.

[0014] A sliding clamping groove is jointly arranged between the planetary gear ring and the outer wall of the filter box, a clamping block is slidably installed in the sliding clamping groove, a second electric push rod is installed on one side of the clamping block, and the second electric push rod is installed on the outer wall of the filter box.

[0015] Preferably, a filter rod is rotatably installed in the middle of the filter sleeve, a rotating block is rotatably installed on the filter rod along the height direction, a rotating guide vane is installed on the outer wall of the rotating block, and a linkage component is arranged between the rotating block of the rotating guide vane and the filter rod.

[0016] Preferably, the upper end of the filtering sleeve is also provided with a horizontal rod, a sensing slider is sleeved and slides on the horizontal rod, and a sensing spring is also sleeved on the horizontal rod, one end of the sensing spring is connected with the sensing slider, and the other end is arranged at the end of the horizontal rod.

[0017] Preferably, the linkage component comprises a hollow movable slot formed in the middle of the filtering rod, and a linkage column is rotatably arranged in the hollow movable slot of the filtering rod, and a plurality of linkage bevel gears are arranged at equal intervals on the linkage column.

[0018] The rotating block on the filtering rod is also connected with a driven bevel gear through a bearing, the driven bevel gear is arranged in the hollow movable slot of the filtering rod, and the driven bevel gear and the linkage bevel gear are meshed with each other, a linkage rack is also arranged on the sensing slider, the linkage rack slides through the filtering rod, and a linkage gear is also arranged at one end of the linkage column close to the linkage rack, and the linkage gear and the linkage rack are meshed with each other.

[0019] Preferably, one side of the filtering box is also provided with an adaptive component capable of adjusting the adaptive variable air volume, the adaptive component comprises two groups of telescopic baffles arranged at one end of the filtering box close to the air inlet, and the two groups of telescopic baffles are arranged with inclined distribution of air inlet baffles on one side close to each other.

[0020] Preferably, the filtering box is provided with two groups of synchronous components along the height direction, the synchronous components comprise two parallel distributed adjusting rods which are slidingly arranged on the inner wall of the filtering box, one end of each of the two adjusting rods away from each other is connected with two air inlet baffles respectively, and the two adjusting rods close to each other are jointly meshed with two adjusting gears, a fiber rod is arranged between the two adjusting gears, and a cloth strip-shaped wind wheel is arranged on the fiber rod.

[0021] Preferably, the upper end of the cleaning sleeve is also slidingly connected with a sliding sleeve, and the top of the filtering box is provided with a dismounting opening corresponding to the position of the sliding sleeve for dismounting the sliding sleeve, and the dismounting opening is covered with a dismounting window.

[0022] Preferably, a plurality of dust suction holes are arranged at equal intervals on the outer wall of the cleaning sleeve, and a plurality of cleaning cones are also arranged at equal intervals on the outer wall of the cleaning sleeve, and the cleaning cones and the dust suction holes are alternately distributed.

[0023] Preferably, the inner side of the filtering sleeve is also sleeved with an annular filter screen, one side of the filter screen abuts against the inner side of the filtering sleeve, and the other side of the filter screen abuts against the outer side of the filtering sleeve, so that the filter screen is attached to the inner and outer sides of the filtering sleeve, a plurality of rollers are rotatably arranged on the filtering sleeve, the filter screen is sleeved on the rollers, and the movement of the filter screen is realized through the rollers.

[0024] In summary, the present application has at least one of the following beneficial technical effects: I. The present application is purified by centrifugal filtration, the centrifugal force generated by the high-speed rotation of the filter sleeve can throw the dust in the air to the cylinder wall, especially the flour with smaller density, to realize the preliminary separation of dust and air; and the subsequent secondary filtration through the porous structure of the filter sleeve can make the dust be efficiently intercepted. For the light dust such as flour which is easy to scatter, the centrifugal separation can avoid the dust penetrating the filter screen with airflow, and significantly reduce the dust concentration at the air outlet.

[0025] II. The rotating guide vane of the present application can automatically adjust the angle according to the rotating speed of the filter sleeve, so that the airflow entering the filter sleeve is more evenly distributed, avoiding the dust penetration caused by the excessive local wind speed, and reducing the airflow resistance.

[0026] III. The switching component of the present application can improve the applicability of the whole device, one mode of the switching component, dust collection mode, actively adsorbs dust through the dust suction hole, reducing the accumulation on the surface of the filter screen; the other mode of the switching component, cleaning mode, rotates and extrudes around the filter sleeve through the cleaning cone, and cooperates with the elastic force of the return spring, to dredge the blocked filter screen, with good dredging efficiency, solving the problem that the traditional filter becomes more and more blocked.

[0027] IV. The rotating guide vane adjusts the angle to guide the airflow to the inner wall of the filter sleeve and the whole circumference of the filter screen, so as to improve the utilization rate of the filter screen and avoid local excessive blockage; the dust accumulation in each area of the filter screen is uniform, thereby prolonging the overall service life of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described below in combination with the drawings and examples.

[0029] Figure 1 is the schematic diagram of the main structure of the present application.

[0030] Figure 2 is the first view structural schematic diagram between the filter sleeve and the cleaning sleeve of the present application.

[0031] Figure 3 is the second view structural schematic diagram between the filter sleeve and the cleaning sleeve of the present application.

[0032] Figure 4 is the structural schematic diagram between the filter sleeve, the cleaning sleeve, the sliding sleeve, the dust suction hole and the cleaning cone of the present application.

[0033] Figure 5 is the structural schematic diagram between the filter rod, the rotating block, the rotating guide vane and the linkage component of the present application.

[0034] Figure 6 is the structural schematic diagram of the linkage component of the present application.

[0035] Figure 7This is a first-view structural diagram of the adaptive component of the present invention.

[0036] Figure 8 This is a schematic diagram of the second-view structure of the adaptive component of the present invention.

[0037] Explanation of reference numerals in the attached drawings: 1. Filter box; 2. Filter sleeve; 3. Lateral rotating shaft; 4. Cleaning sleeve; 10. Air inlet; 11. Air outlet; 12. Central gear; 13. Planetary gear; 14. Planetary ring gear; 15. Switching component; 150. Drive motor; 151. First cross-shaped slot; 152. Cross-shaped block; 153. Connecting column; 154. First electric push rod; 155. Sliding slot; 156. Snap-fit ​​block; 157. Second electric push rod; 20. Filter rod; 21. Rotating block; 22. Rotating guide vane 23. Plate; 24. Linkage component; 25. Horizontal bar; 26. Sensing slider; 27. Sensing spring; 28. Linkage column; 29. ​​Linkage bevel gear; 20. Passive bevel gear; 21. Linkage rack; 22. Linkage gear; 33. Adaptive component; 40. Telescopic baffle; 51. Air inlet baffle; 52. Synchronizer; 53. Adjusting rod; 54. Adjusting gear; 55. Fiber rod; 56. Fan wheel; 40. Sliding sleeve; 41. Removal window; 42. Dust suction hole; 43. Cleaning cone; 60. Filter screen; 67. Roller. Detailed Implementation

[0038] The following combination Figures 1-8 This application will be described in further detail.

[0039] This application discloses an adaptive variable air volume air filter, which is mainly used in the flour production process.

[0040] Most existing air filters use a fixed filter screen 60 structure. In this case, dust will accumulate on the surface of the filter screen 60 as the equipment moves, causing the filter holes to become clogged. This is especially true for light dust such as flour, which easily clogs the filter holes. When the filter holes are clogged, the filter screen 60 needs to be disassembled and maintained. Although some equipment can extend the replacement cycle of the filter screen 60, the extension is not ideal, resulting in a mismatch between the replacement cycle and the filter screen 60's maximum service life, leading to waste of the filter screen 60.

[0041] Secondly, existing air filters have a fixed air inlet 10 when filtering air, which results in a fixed amount of air purified per unit area of ​​the entire air filter. It is impossible to change the air flow rate for adaptive adjustment, thus resulting in a single filtration efficiency for the entire air filter.

[0042] Example 1: Reference Figure 1 and Figure 2As shown, an adaptive variable air volume air filter is characterized by: including a filter box 1, a filter sleeve 2 rotatably installed in the middle of the filter box 1, and a plurality of lateral rotating shafts 3 installed in the filter box 1 and in the circumferential direction on the outer side wall of the filter sleeve 2. An annular limiting groove for the rotation of the lateral rotating shafts 3 is opened on the inner wall of the filter box 1, and a cleaning sleeve 4 is installed on the lateral rotating shaft 3.

[0043] The filter box 1 is symmetrically provided with an air inlet 10 and an air outlet 11 along its length.

[0044] Reference Figure 1 As shown, the filter includes a filter box 1, which is a rectangular hollow structure made of 304 stainless steel. It has an air inlet 10 and an air outlet 11 symmetrically opened along its length. Air enters through the air inlet 10, and after multi-stage treatment, it is discharged from the air outlet 11.

[0045] The core component of the filter box 1 is the filter sleeve 2: vertically installed in the middle of the filter box 1, it is rotatably connected to the filter box 1 through bearings at the top and bottom, and can rotate at high speed around its own axis. The filter sleeve 2 is a porous metal filter screen 60. The centrifugal force generated by its high-speed rotation can throw the dust in the air against the cylinder wall, realizing the initial separation of dust and air.

[0046] Reference Figure 2 , Figure 3 and Figure 4 As shown, specifically, an annular filter screen 60 is also fitted inside the filter sleeve 2. One side of the filter screen 60 abuts against the inner side of the filter sleeve 2, and the other side of the filter screen 60 abuts against the outer side of the filter sleeve 2, so that the filter screen 60 fits against the inner and outer sides of the filter sleeve 2. Several rollers 67 are rotatably arranged on the filter sleeve 2, and the filter screen 60 is fitted on the rollers 67. The movement of the filter screen 60 can be realized by the rollers 67.

[0047] The filter screen 60 uses composite filter material, with an inner layer of non-woven fabric and an outer layer of flexible metal mesh, which are attached to the inner and outer sides of the filter sleeve 2.

[0048] Rollers 67 are evenly distributed along the inner wall of filter sleeve 2. Filter screen 60 is sleeved on filter sleeve 2. Rollers 67 are moved by motor drive, which drives filter screen 60 to move left and right in the horizontal direction.

[0049] When a certain area of ​​the inner filter screen 60 becomes clogged, the filter sleeve 2 moves the filter screen 60, causing the clogged area to move to the outside of the filter sleeve 2, where the cleaning component will clean it specifically. After cleaning, the filter screen 60 moves back to the inside to continue filtering, thus achieving online rotation and local cleaning.

[0050] Looking back Figure 2 and Figure 3As shown, specifically, a central gear 12 is provided at the bottom of the filter box 1 in the vertical direction corresponding to the filter sleeve 2. Several sets of planetary gears 13 corresponding to the cleaning sleeve 4 are also movably provided on the side wall of the central gear 12. The central gear 12 is connected to the filter sleeve 2, and the planetary gears 13 are connected to the cleaning sleeve 4. Planetary gear rings 14 are also installed on the outer side of the planetary gears 13.

[0051] A switching component 15 is provided between the planetary gear 13 and planetary gear ring 14 corresponding to the cleaning sleeve 4 and the filter sleeve 2. The switching component 15 enables the cleaning sleeve 4 to switch between two modes: dust collection and surface cleaning of the filter sleeve 2.

[0052] To enable cleaning of the filter sleeve 2 and dust collection, a cleaning sleeve 4 is provided inside the filter box 1.

[0053] The lateral rotating shafts 3 are evenly distributed circumferentially along the outer wall of the filter sleeve 2, and there are four sets of lateral rotating shafts 3. Their two ends are embedded in the annular limiting grooves on the inner wall of the filter box 1, and can rotate along the annular trajectory.

[0054] The outer wall of the cleaning sleeve 4 is provided with equally spaced dust suction holes 42, and the outer wall of the cleaning sleeve 4 is also provided with equally spaced cleaning cones 43, with the cleaning cones 43 and dust suction holes 42 distributed alternately. A return spring is installed between the cleaning cones 43 and the cleaning sleeve 4.

[0055] The cleaning sleeve 4 is mounted on the lateral rotating shaft 3, parallel to the filter sleeve 2, with a certain gap between its wall and the outer wall of the filter sleeve 2. The outer wall of the cleaning sleeve 4 has alternating dust suction holes 42 and cleaning cones 43; the conical rubber protrusions of the cleaning cone 43 are used to clear blockages in the filter sleeve 2; the dust suction holes 42 are used to adsorb the separated dust; a return spring (not shown in the figure) connects the cleaning cone 43 and the cleaning sleeve 4; when the cleaning cone 43 presses against the filter sleeve 2, the spring stretches and stores force, then returns to its original position after disengagement, preventing excessive wear.

[0056] Looking back Figure 2 and Figure 3 As shown, specifically, the switching component 15 includes a drive motor 150 mounted on the bottom of the filter box 1 via a motor bracket. The output end of the drive motor 150 faces upward and is connected to the central gear 12.

[0057] A cross-shaped slot 151 is provided between the bottom of the filter box 1 and the planetary gear 13. A cross-shaped block 152 is inserted into the cross-shaped slot 151. A connecting column 153 is rotatably installed on the cross-shaped block 152. An electric push rod 154 is installed at the end of the connecting column 153 away from the cross-shaped block 152.

[0058] A sliding groove 155 is provided between the planetary gear ring 14 and the outer wall of the filter box 1. A locking block 156 is slidably installed in the sliding groove 155. A second electric push rod 157 is installed on one side of the locking block 156. The second electric push rod 157 is installed on the outer wall of the filter box 1.

[0059] The drive motor 150 is installed at the bottom of the filter box 1, and its output shaft is connected to the central gear 12 to provide power for the entire transmission system.

[0060] A cross-shaped slot 151 is provided at the bottom of the filter box 1 corresponding to the planetary gear 13. The cross-shaped block 152 can be inserted into the slot, and its top is connected to the electric push rod 154 via the connecting column 153.

[0061] When the first electric actuator 154 extends, the cross-shaped block 152 inserts into the slot, restricting the planetary gear 13 from rotating (only revolving); when retracted, the planetary gear 13 can rotate freely.

[0062] A sliding groove 155 is provided between the outer side of the planetary gear ring 14 and the outer wall of the filter box 1. A locking block 156 is embedded in the groove and connected to the second electric push rod 157 on one side. When the second electric push rod 157 extends, the locking block 156 locks the planetary gear ring 14 to fix it, and the planetary gear 13 rotates freely at this time; when it retracts, the planetary gear ring 14 can rotate freely.

[0063] At this time, the switching component 15 has two switching modes: Mode 1: Dust collection mode.

[0064] The planetary gear ring 14 rotates, and the planetary gear 13 rotates only around its own axis without revolution. The cleaning sleeve 4 rotates synchronously and adsorbs dust on the surface of the filter sleeve 2 and the outer filter screen 60 through the dust suction hole 42. Light dust such as flour is sucked into the dust collection chamber inside the cleaning sleeve 4 by negative pressure.

[0065] Mode 2: Cleanup Mode.

[0066] The planetary gear ring 14 is fixed, and the planetary gear 13 revolves around the central gear 12 (while rotating on its own axis). The cleaning sleeve 4 rotates around the filter sleeve 2 along the annular limiting groove with the lateral rotating shaft 3. The cleaning cone 43 periodically squeezes the blockage holes of the outer filter screen 60, and works with the reset spring to achieve elastic unblocking.

[0067] See Figure 4 As shown, after the filter sleeve 2 has been working for a long time, it needs to be cleaned and replaced. The upper end of the cleaning sleeve 4 is also slidably connected to the sliding sleeve 40. The top of the filter box 1 is provided with a disassembly port for disassembling the sliding sleeve 40 at the position corresponding to the position of the sliding sleeve 40, and the disassembly port is covered with a disassembly window 41.

[0068] Open the disassembly window 41, then remove the sliding sleeve 40 from the cleaning sleeve 4 through the disassembly window 41, pour out the dust collected inside, and then reinsert the sliding sleeve 40 into the cleaning sleeve 4.

[0069] Reference Figure 5 and Figure 6 As shown, specifically, in order to improve filtration efficiency, the filter sleeve 2 is provided with an airflow guiding structure inside. A filter rod 20 is rotatably installed in the middle of the filter sleeve 2. A rotating block 21 is rotatably installed on the filter rod 20 along the height direction. A rotating guide vane 22 is installed on the outer wall of the rotating block 21. A linkage component 23 is provided between the rotating block 21 of the rotating guide vane 22 and the filter rod 20.

[0070] A horizontal rod 24 is also installed at the upper end of the filter sleeve 2. A sensing slider 25 is slidably mounted on the horizontal rod 24. A sensing spring 26 is also mounted on the horizontal rod 24. One end of the sensing spring 26 is connected to the sensing slider 25, and the other end is located at the end of the horizontal rod 24.

[0071] The linkage component 23 includes a hollow movable groove in the middle of the filter rod 20. A linkage column 230 is rotatably installed in the hollow movable groove of the filter rod 20. Several linkage bevel gears 231 are installed at equal intervals on the linkage column 230.

[0072] The rotating block 21 on the filter rod 20 is also connected to a passive bevel gear 232 via a bearing. The passive bevel gear 232 is located in the hollow movable groove of the filter rod 20, and the passive bevel gear 232 meshes with the linkage bevel gear 231. A linkage rack 233 is also installed on the sensing slider 25. The linkage rack 233 slides through the filter rod 20, and a linkage gear 234 is also installed at one end of the linkage column 230 near the linkage rack 233. The linkage gear 234 meshes with the linkage rack 233.

[0073] As the filter sleeve 2 rotates faster, the sensing slider 25, under the action of centrifugal force, compresses the sensing spring 26, which drives the linkage rack 233 to move. Through the linkage gear 234, linkage column 230, and bevel gear transmission, the rotating guide vane 22 rotates, thereby adjusting the angle of the rotating guide vane 22 and optimizing the airflow distribution.

[0074] The airflow entering the filter box 1 pushes the sensing slider 25 to compress the sensing spring 26. The sensing slider 25 drives the linkage rack 233 to move. Through the linkage gear 234, linkage column 230 and bevel gear transmission, the rotating guide vane 22 rotates. The angle range of the rotating guide vane 22 is 30°-60°.

[0075] The rotating guide vanes 22 direct the airflow to the inner wall of the filter sleeve 2, preventing the airflow from directly impacting the central area of ​​the filter screen 60, thus making the dust distribution more uniform.

[0076] When the blades are at 0°: the rotating guide blades 22 are parallel to the airflow direction, causing minimal disturbance to the airflow and only playing a slight guiding role. Dust can easily penetrate the filter screen 60 directly with the airflow.

[0077] When the blades are at a 45° angle: the rotating guide vane 22 is tilted, and the airflow is blocked by the rotating guide vane 22 and deflected towards the inner wall of the filter sleeve 2, increasing the probability of dust contacting the filter screen 60 and thus effectively improving its filtration efficiency.

[0078] When the blade is at 90°: the rotating guide vane 22 is perpendicular to the airflow direction, the airflow is forced to turn along the surface of the rotating guide vane 22 and flow completely against the inner wall of the filter sleeve 2. The dust is intercepted by the combined action of centrifugal force and the guidance of the rotating guide vane 22, and the filtration efficiency is significantly improved.

[0079] Without the rotating guide vanes 22, the airflow is concentrated in the center of the filter sleeve 2, causing a large amount of dust to penetrate directly from the middle of the filter sleeve 2, resulting in low utilization of the edge area of ​​the filter screen 60. The rotating guide vanes 22, through angle adjustment, direct the airflow to the inner wall of the filter sleeve 2 and the entire circumference of the filter screen 60, thereby improving the utilization of the filter screen 60 and avoiding excessive local clogging.

[0080] Traditional filters suffer from turbulent airflow, resulting in significant differences in dust accumulation across different areas of the filter screen 60, with more dust in the center and less at the edges, easily leading to localized clogging. The guide vanes, through angle adjustment, maintain the airflow velocity within the filter sleeve 2 within a certain range, ensuring uniform dust accumulation across all areas of the filter screen 60, thereby extending the overall service life of the filter screen 60.

[0081] Reference Figure 7 and Figure 8 As shown, specifically, an adaptive component 5 with adjustable adaptive air volume is also provided on one side of the filter box 1. The adaptive component 5 includes two sets of telescopic baffles 50 installed at one end of the filter box 1 located at the air inlet 10. An inclined air inlet baffle 51 is installed on the side of the two sets of telescopic baffles 50 that are close to each other.

[0082] The filter box 1 is provided with two sets of synchronizing components 52 along the height direction. The synchronizing component 52 includes two parallel adjusting rods 53 that are slidably installed on the inner wall of the filter box 1. The ends of the two adjusting rods 53 that are far apart from each other are respectively connected to two air inlet baffles 51. The ends of the two adjusting rods 53 that are close to each other are engaged with adjusting gears 54. A fiber rod 55 is installed between the two adjusting gears 54. A cloth strip-shaped impeller 56 is installed on the fiber rod 55.

[0083] Two sets of inclined telescopic baffles 50, made of lightweight aluminum alloy, are symmetrically installed inside the air inlet 10, with the spacing determining the size of the air inlet cross-section. The adjusting rods 53 are two parallel rods that are slidably installed on the inner wall of the filter box 1 and are connected to the two sets of air inlet baffles 51 respectively. The strip-shaped impeller 56 is installed on the gear shaft and rotates with the air volume, driving the adjusting gear 54 to rotate, causing the adjusting rods 53 to move to the sides or the middle, thereby realizing the automatic adjustment of the spacing of the air inlet baffles 51. When the adjusting rods 53 move to the sides, the air volume is large; conversely, it is small.

[0084] It should be noted that a damping collar is provided between the fiber rod 55 and the two adjusting gears 54. When the wind force is greater than the damping of the damping collar, the wind turbine 56 rotates, and the adjusting gears 54 control the two air inlet baffles 51 to move to the maximum distance, and then they cannot move.

[0085] When the air intake is large, the impeller 56 on the fiber rod 55 rotates faster, and the fiber rod 55 controls the adjustment gear 54 to rotate. Then, the adjustment gear 54 controls the two air intake baffles 51 to move away from each other through the corresponding adjustment rod 53. Conversely, the two air intake baffles 51 move closer to each other.

[0086] During operation: First, confirm that the air inlet 10 and air outlet 11 of the filter box 1 are not blocked, the air inlet baffle 51 at the air inlet 10 is in the initial state, and clean and replace the sliding sleeve 40 inside the sleeve 4.

[0087] Step 2: During flour production, a large amount of dust will be generated. At this time, the equipment is started and the dust enters the interior of the filter box 1 through the air inlet 10. The filter sleeve 2 rotates at high speed. Meanwhile, the switching component 15 is in dust collection mode (the planetary gear ring 14 rotates and the cleaning sleeve 4 rotates to collect dust). At the same time, the dust collection hole 42 of the cleaning sleeve 4 collects dust through negative pressure. When the dust collection chamber is full, an alarm prompts for cleaning.

[0088] Step 3: When the pressure difference is large, the cleaning mode is automatically switched. The planetary gear ring 14 is fixed, the cleaning sleeve 4 rotates around the filter sleeve 2, and the cleaning cone 43 clears the filter holes. However, when the pressure difference is still high after multiple cleanings, the filter screen 60 moves, causing its blockage area to move to the outside of the filter sleeve 2 for targeted cleaning. Then, it returns to the dust collection mode, and the filter screen 60 also returns to its initial state to continue dust purification and filtration.

[0089] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An adaptive variable air volume air filter, characterized in that: Includes a filter box (1), a filter sleeve (2) is rotatably installed in the middle of the filter box (1), and several lateral rotating shafts (3) are also installed in the filter box (1) and in the circumferential direction of the outer wall of the filter sleeve (2). An annular limiting groove is opened on the inner wall of the filter box (1) for the lateral rotating shafts (3) to rotate, and a cleaning sleeve (4) is installed on the lateral rotating shafts (3). The filter box (1) is symmetrically provided with an air inlet (10) and an air outlet (11) along its length. The bottom of the filter box (1) is provided with a central gear (12) that rotates vertically to the filter sleeve (2). Several sets of planetary gears (13) corresponding to the cleaning sleeve (4) are also movably provided on the side wall of the central gear (12). The central gear (12) is connected to the filter sleeve (2), and the planetary gears (13) are connected to the cleaning sleeve (4). Planetary gear rings (14) are also installed on the outer side of the planetary gears (13). A switching component (15) is provided between the planetary gear (13) and planetary ring (14) corresponding to the cleaning sleeve (4) and the filter sleeve (2). The switching component (15) enables the cleaning sleeve (4) to switch back and forth between two modes: dust collection and surface cleaning of the filter sleeve (2).

2. The adaptive variable air volume air filter according to claim 1, characterized in that: The switching component (15) includes a drive motor (150) mounted on the bottom of the filter box (1) via a motor bracket. The output end of the drive motor (150) faces upward and is connected to the central gear (12). A cross-shaped slot (151) is also provided between the bottom of the filter box (1) and the planetary gear (13). A cross-shaped block (152) is inserted into the cross-shaped slot (151) between the bottom of the filter box (1) and the planetary gear (13). A connecting column (153) is rotatably installed on the cross-shaped block (152). A first electric push rod (154) is installed at the end of the connecting column (153) away from the cross-shaped block (152). A sliding groove (155) is provided between the planetary gear ring (14) and the outer wall of the filter box (1). A snap block (156) is slidably installed in the sliding groove (155). A second electric push rod (157) is installed on one side of the snap block (156). The second electric push rod (157) is installed on the outer wall of the filter box (1).

3. The adaptive variable air volume air filter according to claim 1, characterized in that: A filter rod (20) is rotatably installed in the middle of the filter sleeve (2). A rotating block (21) is rotatably installed on the filter rod (20) along the height direction. A rotating guide vane (22) is installed on the outer wall of the rotating block (21). A linkage component (23) is provided between the rotating block (21) of the rotating guide vane (22) and the filter rod (20).

4. The adaptive variable air volume air filter according to claim 1, characterized in that: A horizontal rod (24) is also installed at the upper end of the filter sleeve (2). A sensing slider (25) is slidably mounted on the horizontal rod (24). A sensing spring (26) is also mounted on the horizontal rod (24). One end of the sensing spring (26) is connected to the sensing slider (25), and the other end is located at the end of the horizontal rod (24).

5. An adaptive variable air volume air filter according to claim 3, characterized in that: The linkage component (23) includes a hollow movable groove in the middle of the filter rod (20), a linkage column (230) is rotatably installed in the hollow movable groove of the filter rod (20), and several linkage bevel gears (231) are installed at equal intervals on the linkage column (230). The rotating block (21) on the filter rod (20) is also connected to a passive bevel gear (232) via a bearing. The passive bevel gear (232) is located in the hollow movable groove of the filter rod (20), and the passive bevel gear (232) meshes with the linkage bevel gear (231). A linkage rack (233) is also installed on the sensing slider (25). The linkage rack (233) slides through the filter rod (20), and a linkage gear (234) is also installed at the end of the linkage column (230) near the linkage rack (233). The linkage gear (234) meshes with the linkage rack (233).

6. An adaptive variable air volume air filter according to claim 1, characterized in that: The filter box (1) is also provided with an adaptive component (5) that can adjust the adaptive air volume. The adaptive component (5) includes two sets of telescopic baffles (50) installed at one end of the filter box (1) located at the air inlet (10). The two sets of telescopic baffles (50) are installed with inclined air inlet baffles (51) on the side of the two sets of telescopic baffles (50) that are close to each other.

7. An adaptive variable air volume air filter according to claim 6, characterized in that: The filter box (1) is provided with two sets of synchronizing components (52) along the height direction. The synchronizing component (52) includes two parallel adjusting rods (53) that are slidably installed on the inner wall of the filter box (1). The ends of the two adjusting rods (53) that are far apart from each other are connected to two air inlet baffles (51) respectively. The ends of the two adjusting rods (53) that are close to each other are meshed with adjusting gears (54). A fiber rod (55) is installed between the two adjusting gears (54). A cloth strip-shaped impeller (56) is installed on the fiber rod (55).

8. An adaptive variable air volume air filter according to claim 1, characterized in that: The upper end of the cleaning sleeve (4) is also slidably attached to the sliding sleeve (40). The top of the filter box (1) is provided with a disassembly port for disassembling the sliding sleeve (40) at the position corresponding to the position of the sliding sleeve (40), and the disassembly port is covered with a disassembly window (41).

9. An adaptive variable air volume air filter according to claim 1, characterized in that: The cleaning sleeve (4) has dust suction holes (42) evenly spaced on its outer wall, and cleaning cones (43) are also evenly spaced on its outer wall. The cleaning cones (43) and dust suction holes (42) are distributed alternately.

10. An adaptive variable air volume air filter according to claim 1, characterized in that: An annular filter screen (60) is also fitted inside the filter sleeve (2). One side of the filter screen (60) abuts against the inside of the filter sleeve (2), and the other side of the filter screen (60) abuts against the outside of the filter sleeve (2), so that the filter screen (60) fits against the inner and outer sides of the filter sleeve (2). Several rollers (67) are rotatably arranged on the filter sleeve (2). The filter screen (60) is fitted on the rollers (67), and the movement of the filter screen (60) is realized through the rollers (67).

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