Filter with uniform filtering function
By incorporating a three-stage filter structure and an automated control system within the filtration device, the problems of uneven filter distribution and clogging in traditional multi-filter devices are solved. This achieves uniform airflow distribution and efficient filter cleaning, thereby improving the system's reliability and filtration efficiency.
Patent Information
- Application Number
- CN202511721392.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-01-02
AI Technical Summary
Traditional multi-filter gas filtration devices suffer from uneven filter structure and poor anti-clogging performance, resulting in excessive load on some filters and reduced filtration efficiency. Furthermore, existing regeneration mechanisms are difficult to apply simultaneously to all filter units, affecting system reliability and increasing maintenance costs.
The filter employs a three-stage filter structure with an inner wall of the filter housing, combined with a baffle plate and a wind speed sensor. A PLC controller coordinates the drive mechanism and cleaning unit to achieve uniform airflow distribution and automated filter cleaning, including the coordinated use of a sealing unit, an extraction unit, and a cleaning unit.
It achieves uniform filtration, avoids uneven filter load caused by uneven airflow, extends filter life, reduces downtime costs and the risk of secondary pollution, and improves system reliability and filtration efficiency.
Smart Images
Figure CN121243887A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of filter, in particular to a filter with uniform filtering function. BACKGROUND
[0002] The filter is a device for separating impurities and particles in gas or liquid through a filter medium (such as filter screen or filter membrane, etc.), and its core function is to realize efficient separation of different substances, which is widely used in chemical industry, environmental protection and energy industry, etc. In the gas treatment scene, the filtering technology removes dust, aerosol and harmful chemical substances in the air through interception or adsorption, etc. to meet the requirements of production process or environmental quality on gas cleanliness. Common gas filtering equipment includes bag filter, membrane filter and electrostatic filter, etc. Its working principle covers gravity settling, inertial collision, diffusion interception and other mechanisms.
[0003] However, when filtering and separating gas, the uniformity and anti-blocking performance of the multi-filter screen structure have certain defects. The traditional multi-filter screen gas filtering device usually adopts a fixed filter screen array. The flow distribution is uneven when the gas flow passes through different filter screen units due to the difference in flow channel resistance, which causes the load of part of the filter screen to be too high, the filtering efficiency to be reduced, and even local blockage to be caused by the accumulation of impurities. For example, in the process of vapor deposition and heat treatment in the battery industry, uneven gas filtration may cause impurities to remain on the surface of the electrode material, affecting the battery interface impedance and cycle stability. Frequent filter screen replacement or cleaning operation not only increases the downtime cost, but also may introduce secondary pollution due to the disassembly process. In addition, the filter screen regeneration mechanism (such as back flushing or vibration, etc.) in the prior art often cannot act on all filter screen units simultaneously, resulting in significant difference in the service life of each filter screen, further reducing the overall reliability of the system. SUMMARY
[0004] In view of the above problems, the present application provides a filter with uniform filtering function to solve the above problems.
[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a filter with uniform filtering function, comprising a filter shell, three assembly grooves are formed in the inner wall of the filter shell, the inner walls of the three assembly grooves are respectively fixedly connected with a rough filter screen, a medium-efficiency filter screen and a precision filter screen, a driving mechanism is fixedly connected to the upper surface of the filter shell, a closed cavity is formed in the left side surface of the filter shell, three cleaning openings are formed in the upper surface of the filter shell, the inside of each cleaning opening is in communication with the inside of the closed cavity, a closed unit is slidably connected to the inside of the filter shell through the closed cavity, a protective shell is fixedly connected to the upper surface of the filter shell, a PLC controller and three indicator lights are fixedly connected to the front surface of the protective shell, and a suction unit is arranged at the bottom of the filter shell.
[0006] Preferably, the driving mechanism comprises two slide rails and two stable plates fixedly connected to the upper surface of the filter shell, the inner wall of each stable plate is fixedly connected with a first ball bearing, the inner rings of the two first ball bearings are fixedly connected with a first threaded shaft, the left side of one of the stable plates is fixedly connected with a double-shaft micro motor through bolts, the output end of the double-shaft micro motor is fixedly connected with one end of the first threaded shaft, the side faces of the two stable plates close to each other are fixedly connected with two positioning rods, the outer surface of the first threaded shaft is threadedly connected with a moving seat, the outer surface of each positioning rod is slidably connected with the inside of the moving seat, the bottom surface of each moving seat is fixedly connected with two sliding plates, the outer surface of each sliding plate is slidably connected with the inside of the slide rail, the upper surface of the moving seat is fixedly connected with a support and a first micro stepping motor fixedly connected through bolts respectively, the inner wall of the support is fixedly connected with a second ball bearing, the inner ring of the second ball bearing and the output end of the first micro stepping motor are fixedly connected with a second threaded shaft, the outer surface of the second threaded shaft is threadedly connected with a connecting frame, the upper surface of the moving seat is provided with two penetrating holes, the bottom end of the connecting frame penetrates to the below of the moving seat through the penetrating holes, the inside of the connecting frame is slidably connected with two movable plates, the bottom surfaces of the two movable plates are fixedly connected with a cleaning shell, and the upper surface of the cleaning shell is in contact with the bottom surface of the moving seat.
[0007] Preferably, the inner wall of the connecting frame is fixedly connected with eight spiral compression springs, one end of each spiral compression spring is fixedly connected with the inner wall of the movable plate, the outer surface of the connecting frame is fixedly connected with two balance plates, the inner wall of the support is provided with two balance sliding grooves, the inside of each balance sliding groove is slidably connected with the outer surface of the balance plate, and the inner wall of the protective shell is fixedly connected with an observation window.
[0008] Preferably, the inner wall of the cleaning shell is fixedly connected with two third ball bearings, the inner rings of the two third ball bearings are fixedly connected with a cleaning roller brush, the front surface of the cleaning shell is fixedly connected with a second micro stepping motor through bolts, the output end of the second micro stepping motor is fixedly connected with one end of the cleaning roller brush, and the PLC controller is electrically connected with the second micro stepping motor through wires.
[0009] Preferably, the closed unit comprises a closed plate slidably connected inside the closed cavity, the closed plate is located inside the three cleaning ports, the left side of the filter shell is fixedly connected with a support seat, the inner wall of the support seat is fixedly connected with a fourth ball bearing, the output end of the double-shaft micro motor and the inner ring of the fourth ball bearing are fixedly connected with a fourth threaded shaft, the upper surface of the closed plate is fixedly connected with a moving block, and the inner wall of the moving block is threadedly connected with the outer surface of the fourth threaded shaft.
[0010] Preferably, the upper surface of the support seat is provided with two positioning grooves, the inner part of each positioning groove is slidably connected with a positioning plate, and the upper surface of each positioning plate is fixedly connected with the bottom surface of the closing plate.
[0011] Preferably, the extraction unit comprises an impurity treatment box and a centrifugal pump fixedly connected to the inner wall of the support seat, the inner wall of the filter shell is fixedly connected with three groups of air speed sensors, the three groups of air speed sensors are respectively located at the left side of the rough filter screen, the left side of the medium-efficiency filter screen and the left side of the precision filter screen, the inner wall of the filter shell is fixedly connected with three extraction shells, the bottom surface of the filter shell is fixedly connected with an extraction and separation shell, the bottom surface of each extraction shell is fixedly and communicatively connected with a first extraction pipe and a second extraction pipe, the input end and the output end of the centrifugal pump are fixedly and communicatively connected with a third extraction pipe and a discharge pipe, one end of the discharge pipe penetrates into the inner part of the impurity treatment box, and one end of the third extraction pipe is fixedly and communicatively connected with the outer surface of the extraction and separation shell.
[0012] Preferably, the upper surface of each extraction shell is fixedly connected with a mesh cover through bolts, and the bottom surface of each extraction shell is fixedly connected with four support pins.
[0013] Preferably, the upper surface of the impurity treatment box is fixedly and communicatively connected with an injection pipe, the inner wall of the impurity treatment box is fixedly connected with a water level sensor, the inner wall of the filter shell is fixedly connected with a wind resistance plate, the outer surface of the wind resistance plate is provided with a plurality of tapered air inlet grooves, the outer surface of the discharge pipe is fixedly connected with a positioning rack, the outer surface of the positioning rack is fixedly connected with the outer surface of the impurity treatment box, and the PLC controller is electrically connected with the three indicator lights, the water level sensor, the centrifugal pump, the air speed sensor, the double-shaft micro motor and the first micro stepping motor through wires.
[0014] The present application has the following advantages: 1. The three-stage filter screen structure of the rough filter screen, the medium-efficiency filter screen and the precision filter screen arranged on the inner wall of the filter shell, in cooperation with the wind resistance plate and the tapered air inlet grooves thereof, can make the airflow be guided by the tapered grooves when passing through different filter screens, forcibly balance the air inlet flow of each filter screen unit, avoid uneven flow distribution caused by flow passage resistance difference, prevent some filter screens from being overloaded and the filtration efficiency from being reduced due to uneven airflow, realize uniform filtration of the gas, and ensure the consistency of the filtration efficiency of each filter screen unit.
[0015] 2、The application monitors the wind speed changes before and after each filter screen in real time through the wind speed sensor and transmits the data to the PLC controller, when detecting that the pressure difference of one of the filter screens exceeds the threshold, the PLC controller triggers the double-shaft micro motor to drive the first threaded shaft and the fourth threaded shaft to rotate, so that the moving seat drives the cleaning shell to move above the corresponding filter screen, the first micro stepping motor drives the second threaded shaft to make the connecting frame descend, the second micro stepping motor in the cleaning shell drives the cleaning roller brush to rotate, the roller brush cleans the blocked filter screen, the spiral compression spring makes the cleaning roller brush adapt to the ups and downs of the filter screen surface, avoids damaging the filter screen, and the closed plate of the closed unit opens the corresponding cleaning port during cleaning, and closes after cleaning, avoids air leakage, can accurately trigger the cleaning action according to the filter screen blockage, realizes timely cleaning of the blocked filter screen, avoids that the local blockage is caused by the concentrated accumulation of impurities, solves the problem that the filter screen regeneration mechanism in the prior art cannot act on all filter screen units simultaneously, prolongs the service life of the filter screen, and reduces the downtime cost and secondary pollution risk caused by frequent replacement or cleaning of the filter screen. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the overall structure of the application; Figure 3 It is a schematic diagram of the overall structure of the application; Figure 4 It is a schematic diagram of the overall structure of the application; Figure 5 It is a schematic diagram of the overall structure of the application; Figure 6 It is a schematic diagram of the overall structure of the application; Figure 7 It is a schematic diagram of the overall structure of the application; Figure 8 It is a schematic diagram of the overall structure of the application; Figure 9 It is a schematic diagram of the overall structure of the application; Figure 10 It is a schematic diagram of the overall structure of the application; Figure 11 It is a schematic diagram of the overall structure of the application; Figure 12 It is a schematic diagram of the overall structure of the application; Figure 13 It is a schematic diagram of the overall structure of the application; Figure 14The schematic diagram of the three-dimensional structure of the wind baffle of the application.
[0017] In the drawings: 1, filter shell; 2, wind speed sensor; 3, PLC controller; 4, observation window; 5, indicator light; 6, protective shell; 7, double-shaft micro motor; 8, water level sensor; 9, injection pipe; 10, impurity treatment box; 11, discharge pipe; 12, support seat; 13, closing plate; 14, sliding plate; 15, moving seat; 16, sliding rail; 17, positioning rod; 18, first threaded shaft; 19, first micro stepping motor; 20, support; 21, second threaded shaft; 22, balancing plate; 23, connecting frame; 24, balancing sliding groove; 25, fourth threaded shaft; 26, fourth ball bearing; 27, stabilizing plate; 28, positioning frame; 29, moving block; 30, centrifugal pump; 31, third extraction pipe; 32, wind baffle; 33, conical air inlet groove; 34, closed cavity; 35, cleaning port; 36, precision filter screen; 37, medium-efficiency filter screen; 38, extraction shell; 39, crude filter screen; 40, screen cover; 41, second ball bearing; 42, first ball bearing; 43, positioning plate; 44, positioning groove; 45, cleaning shell; 46, helical compression spring; 47, movable plate; 48, through hole; 49, cleaning roller brush; 50, third ball bearing; 51, second micro stepping motor; 52, assembly groove; 53, first extraction pipe; 54, extraction shell; 55, second extraction pipe; 56, support pin. DETAILED DESCRIPTION
[0018] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.
[0019] Embodiment: Please refer to Figures 1 to 14 A filter with uniform filtering function, comprising a filter shell 1, three assembly grooves 52 are formed in the inner wall of the filter shell 1, the inner walls of the three assembly grooves 52 are respectively fixedly connected with a crude filter screen 39, a medium-efficiency filter screen 37 and a precision filter screen 36, a driving mechanism is fixedly connected to the upper surface of the filter shell 1, a closed cavity 34 is formed in the left side surface of the filter shell 1, three cleaning ports 35 are formed in the upper surface of the filter shell 1, the inside of each cleaning port 35 is in communication with the inside of the closed cavity 34, a closing unit is slidably connected to the inside of the filter shell 1 through the closed cavity 34, a protective shell 6 is fixedly connected to the upper surface of the filter shell 1, a PLC controller 3 and three indicator lights 5 are fixedly connected to the front surface of the protective shell 6, and an extraction unit is arranged at the bottom of the filter shell 1.
[0020] Working principle: three assembly grooves 52 on the inner wall of the filter shell 1 are respectively installed with the rough filter screen 39, the medium filter screen 37 and the precision filter screen 36, forming a three-stage filtering structure, the driving mechanism on the upper surface of the filter shell 1 is used to drive the cleaning component to move, the left closed cavity 34 is communicated with the cleaning port 35, the closed unit can slide through the closed cavity 34 to open or close the cleaning port 35, the PLC controller 3 on the outer side of the protective shell 6 is used to coordinate the operation of each component, and the bottom extraction unit is used to collect impurities. The whole body realizes the classification of gas filtration through the three-stage filter screen, realizes uniform filtration and blockage cleaning through the cooperation of each structure, and solves the problems of uneven gas flow and blockage of traditional multi-filter screen.
[0021] Please refer to Figures 1 to 14 The driving mechanism includes two slide rails 16 and two stable plates 27 fixedly connected to the upper surface of the filter shell 1. The inner wall of each stable plate 27 is fixedly connected with a first ball bearing 42. The inner rings of the two first ball bearings 42 are fixedly connected with a first threaded shaft 18. One side of one of the stable plates 27 is fixedly connected with a double-shaft micro motor 7 through a bolt. The output end of the double-shaft micro motor 7 is fixedly connected with one end of the first threaded shaft 18. Two positioning rods 17 are fixedly connected to the sides of the two stable plates 27 that are close to each other. The outer surface of the first threaded shaft 18 is threadedly connected with a moving seat 15. The outer surface of each positioning rod 17 is slidably connected with the inside of the moving seat 15. The bottom surface of each moving seat 15 is fixedly connected with two sliding plates 14. The outer surface of each sliding plate 14 is slidably connected with the inside of the slide rail 16. The upper surface of the moving seat 15 is fixedly connected with a support 20 and a first micro stepping motor 19 fixedly connected through a bolt. The inner wall of the support 20 is fixedly connected with a second ball bearing 41. The inner ring of the second ball bearing 41 and the output end of the first micro stepping motor 19 are fixedly connected with a second threaded shaft 21. The outer surface of the second threaded shaft 21 is threadedly connected with a connecting frame 23. The upper surface of the moving seat 15 is provided with two penetrating ports 48. The bottom end of the connecting frame 23 penetrates to the below of the moving seat 15 through the penetrating port 48. The inside of the connecting frame 23 is slidably connected with two movable plates 47. The bottom surfaces of the two movable plates 47 are fixedly connected with a cleaning shell 45. The upper surface of the cleaning shell 45 is in contact with the bottom surface of the moving seat 15.
[0022] Working principle: the double-shaft micro motor 7 of the driving mechanism drives the first threaded shaft 18 to rotate. The first threaded shaft 18 drives the moving seat 15 to slide along the positioning rod 17 through thread connection. The sliding plates 14 at the bottom of the moving seat 15 slide in the slide rail 16 to ensure the stability of movement. The first micro stepping motor 19 on the moving seat 15 drives the second threaded shaft 21 to rotate. The second threaded shaft 21 drives the connecting frame 23 to ascend and descend along the penetrating port 48 through thread connection, so that the cleaning shell 45 at the bottom of the connecting frame 23 moves to the target filter screen position, realizing the transverse movement and lifting function of the cleaning component, and providing a position adjustment basis for filter screen cleaning.
[0023] Please refer to Figures 1 to 14 The inner wall of the connecting frame 23 is fixedly connected with eight spiral compression springs 46, one end of each of the spiral compression springs 46 is fixedly connected with the inner wall of the movable plate 47, the outer surface of the connecting frame 23 is fixedly connected with two balance plates 22, the inner wall of the support 20 is provided with two balance sliding grooves 24, the inside of each of the balance sliding grooves 24 is slidably connected with the outer surface of the balance plate 22, and the inner wall of the protective shell 6 is fixedly connected with the observation window 4.
[0024] Working principle: The spiral compression springs 46 in the inner wall of the connecting frame 23 are connected with the movable plate 47, so that the cleaning shell 45 can elastically float, the balance plate 22 outside the connecting frame 23 slides in the balance sliding groove 24 of the support 20, the balance of the connecting frame 23 during lifting is ensured, the observation window 4 is used for observing the internal working state, the elastic effect of the spiral compression spring 46 enables the cleaning roller brush 49 to be self-adaptive to the ups and downs of the filter screen surface, so that hard contact damage to the filter screen is avoided, and the balance plate 22 and the balance sliding groove 24 are matched to improve the stability of the lifting movement.
[0025] Please refer to Figures 1 to 14 The inner wall of the cleaning shell 45 is fixedly connected with two third ball bearings 50, the inner rings of the two third ball bearings 50 are fixedly connected with the cleaning roller brush 49, the front surface of the cleaning shell 45 is fixedly connected with the second micro stepping motor 51 through bolts, one end of the cleaning roller brush 49 is fixedly connected with the output end of the second micro stepping motor 51, and the PLC controller 3 is electrically connected with the second micro stepping motor 51 through wires.
[0026] Working principle: The second micro stepping motor 51 in the cleaning shell 45 drives the cleaning roller brush 49 to rotate through the third ball bearing 50, the clogged filter screen is cleaned by the roller brush, the PLC controller 3 controls the start-stop and rotating speed of the second micro stepping motor 51, the rotation of the cleaning roller brush 49 can brush off the impurities on the filter screen, physical cleaning of the clogged filter screen is realized, the problem of reduced filtering efficiency caused by impurity accumulation is solved, and on-demand cleaning is realized through precise control.
[0027] Please refer to Figures 1 to 14 The closed unit comprises a closing plate 13 slidably connected inside the closed cavity 34, the closing plate 13 is located inside the three cleaning ports 35, the left side surface of the filter shell 1 is fixedly connected with a support seat 12, the inner wall of the support seat 12 is fixedly connected with a fourth ball bearing 26, the output end of the double-shaft micro motor 7 is fixedly connected with the inner ring of the fourth ball bearing 26, and the fourth threaded shaft 25 is fixedly connected with the upper surface of the closing plate 13.
[0028] Working principle: the double-shaft micro motor 7 of the closed unit drives the fourth threaded shaft 25 to rotate at the same time, and the fourth threaded shaft 25 drives the closing plate 13 to slide in the closed cavity 34 through the moving block 29. When one of the filter screens needs to be cleaned, the closing plate 13 moves to open the cleaning port 35. After cleaning, the cleaning port 35 is closed to avoid air leakage, realize the opening and closing control of the air flow channel during cleaning, and ensure the normal operation of the filtering system.
[0029] Please refer to Figures 1 to 14 The upper surface of the support seat 12 is provided with two positioning grooves 44, and the inside of each positioning groove 44 is slidably connected with a positioning plate 43. The upper surface of each positioning plate 43 is fixedly connected with the bottom surface of the closing plate 13.
[0030] Working principle: the positioning groove 44 on the support seat 12 cooperates with the positioning plate 43 to position and guide the sliding of the closing plate 13, ensuring the stability and accuracy of the closing plate 13 during movement, avoiding sealing of the cleaning port 35 or positioning deviation due to shaking, and improving the reliability of the closed unit.
[0031] Please refer to Figures 1 to 14 The extraction unit includes the impurity treatment box 10 fixedly connected to the inner wall of the support seat 12 and the centrifugal pump 30. The inner wall of the filter shell 1 is fixedly connected with three groups of air speed sensors 2, which are respectively located on the left side of the rough filter screen 39, the left side of the medium-efficiency filter screen 37 and the left side of the precision filter screen 36. The inner wall of the filter shell 1 is fixedly connected with three extraction shells 38, and the bottom surface of the filter shell 1 is fixedly connected with an extraction and separation shell 54. The bottom surface of each extraction shell 38 is fixedly connected with a first extraction pipe 53 and a second extraction pipe 55 in common with the outer surface of the extraction and separation shell 54. The input end and the output end of the centrifugal pump 30 are fixedly connected with a third extraction pipe 31 and a discharge pipe 11 respectively. One end of the discharge pipe 11 penetrates into the inside of the impurity treatment box 10, and one end of the third extraction pipe 31 is fixedly connected with the outer surface of the extraction and separation shell 54.
[0032] Working principle: the air speed sensor 2 of the extraction unit monitors the air speed before and after each filter screen in real time. When the filter screen is detected to be blocked, the PLC controller 3 starts the centrifugal pump 30. The centrifugal pump 30 extracts the fallen impurities from the extraction shell 38 to the impurity treatment box 10 through the third extraction pipe 31, the extraction and separation shell 54, the first extraction pipe 53 and the second extraction pipe 55, realizes the timely collection and discharge of impurities, avoids the accumulation of impurities affecting the filtering effect, and provides a basis for cleaning trigger through the air speed data.
[0033] Please refer to Figures 1 to 14 The upper surface of each extraction shell 38 is fixedly connected with a mesh cover 40 through bolts, and the bottom surface of each extraction shell 38 is fixedly connected with four support pins 56, and the bottom surface of each support pin 56 is fixedly connected with the inner wall of the filter shell 1.
[0034] Working principle: the mesh cover 40 on the extraction shell 38 is used to prevent large particles from entering the extraction pipeline, the support pin 56 fixes the extraction shell 38 to the inner wall of the filter shell 1, ensures the stability of the installation of the extraction shell 38, and the setting of the mesh cover 40 can avoid pipeline blockage and improve the stability of extraction.
[0035] Please refer to Figures 1 to 14 , the upper surface of the impurity treatment box 10 is fixedly connected with the injection pipe 9, the inner wall of the impurity treatment box 10 is fixedly connected with the water level sensor 8, the inner wall of the filter shell 1 is fixedly connected with the air resistance plate 32, the outer surface of the air resistance plate 32 is provided with a plurality of tapered air inlet grooves 33, the outer surface of the discharge pipe 11 is fixedly connected with the positioning frame 28, the outer surface of the positioning frame 28 is fixedly connected with the outer surface of the impurity treatment box 10, and the PLC controller 3 is electrically connected with the three indicator lights 5, the water level sensor 8, the centrifugal pump 30, the air speed sensor 2, the double-shaft micro motor 7 and the first micro stepping motor 19 through wires.
[0036] Working principle: the impurity treatment box 10 can inject water solution and the like to precipitate impurities, the injection pipe 9 of the impurity treatment box 10 is used to inject cleaning liquid or treatment agent, the water level sensor 8 monitors the water level in the box, the tapered air inlet grooves 33 of the air resistance plate 32 guide airflow to pass through the filter screen uniformly, the positioning frame 28 fixes the discharge pipe 11, the PLC controller 3 integrates sensor data and coordinates the linkage of components such as the double-shaft micro motor 7, the first micro stepping motor 19 and the centrifugal pump 30, realizes full-process automatic control of uniform airflow filtration, automatic blockage detection, timely impurity cleaning and collection, and solves the problems of uneven airflow, difficult cleaning and high maintenance cost of traditional multi-filter screen systems.
[0037] In summary, when the overall device is in use: the gas enters from the right side of the filter shell 1, first passes through the three-stage filtering structure composed of the rough filter screen 39, the medium filter screen 37 and the precision filter screen 36, the air resistance plate 32 on the inner wall of the filter shell 1 guides the airflow to pass through each layer of filter screen uniformly through the conical air inlet groove 33, realizing the staged filtration of the gas and avoiding uneven flow distribution caused by flow passage resistance difference, the three groups of air velocity sensors 2 respectively monitor the air velocity changes before and after the three layers of filter screen in real time and transmit the data to the PLC controller 3 outside the protective shell 6, when the pressure difference before and after one of the filter screens exceeds the threshold value, the PLC controller 3 triggers the dual-shaft micro motor 7 to start, one of the output ends drives the fourth threaded shaft 25 to rotate, so that the moving block 29 moves, the moving block 29 drives the closure plate 13 to slide in the closed cavity 34, opens the corresponding cleaning port 35, and the other output end simultaneously drives the first threaded shaft 18 and the fourth threaded shaft 25 to rotate, the first threaded shaft 18 drives the moving seat 15 to slide along the positioning rod 17 through the threaded connection, the sliding plate 14 at the bottom of the moving seat 15 synchronously slides in the slide rail 16 to ensure stability, at the same time, the first micro stepping motor 19 drives the second threaded shaft 21 to rotate, and the connecting frame 23 is lowered along the through port 48 through the threaded connection, the spiral compression spring 46 on the inner wall of the connecting frame 23 pushes the movable plate 47, so that the cleaning roller brush 49 at the bottom of the cleaning shell 45 adheres to the surface of the target filter screen, at this time, the second micro stepping motor 51 drives the cleaning roller brush 49 to rotate through the third ball bearing 50, and the impurities on the filter screen are brushed off, the impurities generated in the cleaning process fall into the extraction shell 38 at the bottom of the filter shell 1, the PLC controller 3 starts the centrifugal pump 30, and the impurities are extracted to the impurity treatment box 10 through the third extraction pipe 31, the extraction shell 54, the first extraction pipe 53 and the second extraction pipe 55, the net cover 40 on the extraction shell 38 prevents large-particle impurities from blocking the pipeline, the supporting pin 56 ensures stable installation of the extraction shell 38, the impurity treatment box 10 injects cleaning liquid into the impurities through the injection pipe 9 for sedimentation treatment, the water level sensor 8 monitors the water level in the box in real time, the positioning frame 28 fixes the discharge pipe 11 to ensure stable impurity transportation, after cleaning, the closure plate 13 closes the cleaning port 35 under the drive of the fourth threaded shaft 25, to avoid air leakage, during the whole process, the balancing plate 22 outside the connecting frame 23 slides in the balancing sliding groove 24 of the support 20 to ensure balanced lifting of the cleaning components, the elastic action of the spiral compression spring 46 makes the cleaning roller brush 49 self-adapt to the ups and downs of the filter screen surface, the observation window 4 facilitates real-time observation of the internal working state, the PLC controller 3 coordinates the dual-shaft micro motor 7, the first micro stepping motor 19, the second micro stepping motor 51 and the centrifugal pump 30 through integration of sensor data, realizes automatic control of the whole process from uniform airflow filtration, blockage detection to impurity cleaning and collection, and effectively solves the problems of uneven airflow, difficult cleaning and high maintenance cost of traditional multi-filter screen systems.
[0038] It should be noted that in the description of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.
[0039] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0040] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.
Claims
1. A filter with uniform filtration function, comprising a filter housing (1), characterized in that: The inner wall of the filter housing (1) is provided with three assembly slots (52). The inner walls of the three assembly slots (52) are respectively fixedly connected to a coarse filter screen (39), a medium-efficiency filter screen (37) and a precision filter screen (36). The upper surface of the filter housing (1) is fixedly connected to a drive mechanism. The left side of the filter housing (1) is provided with a closed cavity (34). The upper surface of the filter housing (1) is provided with three cleaning ports (35). The interior of each cleaning port (35) is connected to the interior of the closed cavity (34). The interior of the filter housing (1) is slidably connected to a sealing unit through the closed cavity (34). The upper surface of the filter housing (1) is fixedly connected to a protective shell (6). The front of the protective shell (6) is fixedly connected to a PLC controller (3) and three indicator lights (5). The bottom of the filter housing (1) is provided with an extraction unit.
2. A filter with uniform filtration function according to claim 1, characterized in that, The drive mechanism includes two slide rails (16) and two stabilizing plates (27) fixedly connected to the upper surface of the filter shell (1). A first ball bearing (42) is fixedly connected to the inner wall of each stabilizing plate (27). The inner rings of the two first ball bearings (42) are jointly fixedly connected to a first threaded shaft (18). A dual-axis micro motor (7) is bolted to the left side of one of the stabilizing plates (27). The output end of the dual-axis micro motor (7) is fixedly connected to one end of the first threaded shaft (18). Two positioning rods (17) are fixedly connected to the sides of the two stabilizing plates (27) that are close to each other. A movable seat (15) is threadedly connected to the outer surface of the first threaded shaft (18). The outer surface of each positioning rod (17) is slidably connected to the interior of the movable seat (15). Two sliding plates (14) are fixedly connected to the bottom surface of each movable seat (15). The outer surface of each sliding plate (14)... The upper surface of the movable seat (15) is slidably connected to the inside of the slide rail (16). The upper surface of the movable seat (15) is fixedly connected to the bracket (20) and the first micro stepper motor (19) fixedly connected by bolts. The inner wall of the bracket (20) is fixedly connected to the second ball bearing (41). The inner ring of the second ball bearing (41) and the output end of the first micro stepper motor (19) are fixedly connected to the second threaded shaft (21). The outer surface of the second threaded shaft (21) is threadedly connected to the connecting frame (23). The upper surface of the movable seat (15) has two through holes (48). The bottom end of the connecting frame (23) passes through the through holes (48) to the bottom of the movable seat (15). The interior of the connecting frame (23) is slidably connected to two movable plates (47). The bottom surfaces of the two movable plates (47) are fixedly connected to the cleaning shell (45). The upper surface of the cleaning shell (45) is in contact with the bottom surface of the movable seat (15).
3. A filter with uniform filtration function according to claim 2, characterized in that, The inner wall of the connecting frame (23) is fixedly connected with eight spiral compression springs (46), one end of each spiral compression spring (46) is fixedly connected to the inner wall of the movable plate (47), two balance plates (22) are fixedly connected to the outer surface of the connecting frame (23), two balance grooves (24) are opened on the inner wall of the bracket (20), and the interior of each balance groove (24) is slidably connected to the outer surface of the balance plate (22), and an observation window (4) is fixedly connected to the inner wall of the protective shell (6).
4. A filter with uniform filtration function according to claim 2, characterized in that, The inner wall of the cleaning shell (45) is fixedly connected to two third ball bearings (50), and the inner rings of the two third ball bearings (50) are fixedly connected to a cleaning roller brush (49). The front of the cleaning shell (45) is fixedly connected to a second micro stepper motor (51) by bolts. The output end of the second micro stepper motor (51) is fixedly connected to one end of the cleaning roller brush (49). The PLC controller (3) is electrically connected to the second micro stepper motor (51) by wires.
5. A filter with uniform filtration function according to claim 2, characterized in that, The sealing unit includes a sealing plate (13) slidably connected inside the sealing cavity (34). The sealing plate (13) is located inside the three cleaning ports (35). A support seat (12) is fixedly connected to the left side of the filter shell (1). A fourth ball bearing (26) is fixedly connected to the inner wall of the support seat (12). A fourth threaded shaft (25) is fixedly connected to the output end of the dual-axis micro motor (7) and the inner ring of the fourth ball bearing (26). A moving block (29) is fixedly connected to the upper surface of the sealing plate (13). The inner wall of the moving block (29) is threadedly connected to the outer surface of the fourth threaded shaft (25).
6. A filter with uniform filtration function according to claim 5, characterized in that, The upper surface of the support base (12) has two positioning grooves (44), and a positioning plate (43) is slidably connected inside each positioning groove (44). The upper surface of each positioning plate (43) is fixedly connected to the bottom surface of the closing plate (13).
7. A filter with uniform filtration function according to claim 5, characterized in that, The extraction unit includes an impurity treatment box (10) and a centrifugal pump (30) fixedly connected to the inner wall of the support base (12). Three sets of wind speed sensors (2) are fixedly connected to the inner wall of the filter shell (1). The three sets of wind speed sensors (2) are located on the left side of the coarse filter screen (39), the left side of the medium-efficiency filter screen (37), and the left side of the precision filter screen (36), respectively. Three extraction shells (38) are fixedly connected to the inner wall of the filter shell (1). The bottom surface of the filter shell (1) is fixedly connected to... There is an extraction shell (54). The bottom surface of each extraction shell (38) is fixedly connected to the outer surface of the extraction shell (54) with a first extraction pipe (53) and a second extraction pipe (55). The input end and output end of the centrifugal pump (30) are fixedly connected to a third extraction pipe (31) and a discharge pipe (11), respectively. One end of the discharge pipe (11) extends into the interior of the impurity treatment box (10), and one end of the third extraction pipe (31) is fixedly connected to the outer surface of the extraction shell (54).
8. A filter with uniform filtration function according to claim 7, characterized in that, Each of the extraction shells (38) has a mesh cover (40) fixedly connected to its upper surface by bolts, and each of the extraction shells (38) has four support pins (56) fixedly connected to its bottom surface. The bottom surface of each support pin (56) is fixedly connected to the inner wall of the filter shell (1).
9. A filter with uniform filtration function according to claim 7, characterized in that, An injection pipe (9) is fixedly connected to the upper surface of the impurity treatment box (10). A water level sensor (8) is fixedly connected to the inner wall of the impurity treatment box (10). A wind baffle (32) is fixedly connected to the inner wall of the filter shell (1). Multiple conical air inlet slots (33) are opened on the outer surface of the wind baffle (32). A positioning frame (28) is fixedly connected to the outer surface of the discharge pipe (11). The outer surface of the positioning frame (28) is fixedly connected to the outer surface of the impurity treatment box (10). The PLC controller (3) is electrically connected to three indicator lights (5), a water level sensor (8), a centrifugal pump (30), a wind speed sensor (2), a dual-axis micro motor (7), and a first micro stepper motor (19) through wires.