Acrylic coating production filtering equipment capable of being adjusted and cleaned in circulating mode

Abstract

The invention discloses acrylic coating production filtering equipment capable of being adjusted and cleaned in a circulating mode, and belongs to the technical field of acrylic coating production, the acrylic coating production filtering equipment comprises a filtering box, a feeding pipe vertically arranged in the middle of the top of the filtering box and a discharging pipe arranged at the bottom end of the filtering box, and an annular partition plate is horizontally arranged in the middle of the interior of the filtering box; a stainless steel filter cartridge is vertically fixed at the top of the annular partition plate; a positioning plate is horizontally fixed at the top end of the stainless steel filter cartridge. The washing cover and the collecting cover are arranged at the opposite positions of the inner side and the outer side of the filter cylinder correspondingly, the rotating shaft can drive the washing cover and the collecting cover to slide around the inner side and the outer side of the stainless steel filter cylinder at the same time, and then the driving mechanism, the washing liquid conveying mechanism and the washing liquid collecting mechanism are matched for use; the device can continuously and circularly backwash and clean the stainless steel filter cartridge in the using process without reaching a pressure difference set value, so that the cleanness of the surface of the stainless steel filter cartridge is ensured, and the filtering rate in the using process is improved.

Description

Technical Field

[0001] This invention relates to filtration equipment, and more particularly to a circulating, regulating, and cleaning filtration system for acrylic coating production, belonging to the field of acrylic coating production technology. Background Technology

[0002] In the production process of acrylic coatings, stainless steel filter screens are usually used as the filtration medium. The acrylic coating to be filtered passes through the filter screen under pressure, and solid particles and impurities in the coating are trapped on the outside of the filter screen, while the filtered coating flows out through the filter screen, thus achieving solid-liquid separation.

[0003] Currently, filtration equipment only automatically starts the cleaning program to clean the filter screen when impurities accumulate to a certain level on the filter screen surface, causing the pressure difference across the filter screen to reach a set value. It cannot perform continuous cyclic cleaning during filtration. By the time the self-cleaning program starts, the filter screen has already become clogged to a certain extent, slowing down the filtration rate and affecting the filtration rate during continuous use.

[0004] To address these issues, a circulating, adjustable cleaning filtration system for acrylic coating production was designed. Summary of the Invention

[0005] The main objective of this invention is to provide a circulating, adjustable cleaning filtration device for acrylic coating production. By installing a rinsing hood and a collecting hood at opposite positions on the inner and outer sides of the filter cartridge, and having a rotating shaft simultaneously drive both the rinsing hood and the collecting hood to slide around the inner and outer sides of the stainless steel filter cartridge, combined with a drive mechanism, a rinsing liquid delivery mechanism, and a rinsing liquid collection mechanism, the device can achieve continuous circulating backwashing and cleaning of the stainless steel filter cartridge during use, without needing to reach a pressure differential setpoint. This ensures the cleanliness of the stainless steel filter cartridge surface and improves the filtration rate. The drive mechanism, consisting of a guide bucket, volute, impeller, and drive shaft, is used in conjunction with a speed adjustment mechanism consisting of an I-shaped pipe, piston, spring, slide rod, crossbar, sealing cover, bearing, splined shaft, splined groove, first magnetic disk, and second magnetic disk. This allows the flow of the filtered liquid to drive the active rotation of the rotating shaft during the filtration process. During use, the rotation speed of the shaft is automatically adjusted according to the pressure difference between the inside and outside of the stainless steel filter cartridge, ensuring the cleaning rate and effect on the surface of the stainless steel filter cartridge. This makes it more practical and energy-efficient. The oscillating mechanism, consisting of a rotating rod, gear, rack, slider, and corrugated groove, is installed inside the rinsing hood. This mechanism automatically controls the up-and-down oscillation of the nozzle during the rotation of the rinsing hood. The pulse cleaning method improves the backwashing effect during use. The first scraper on the side away from the direction of rotation and the rotating roller, conveyor belt, and rubber partition inside the collection hood improve the sealing effect inside the collection hood, preventing backwashing liquid leakage. In addition, the first and second scrapers ensure that impurities on the surface of the stainless steel filter cartridge can only be scraped off when the collection hood is covered, preventing impurities from falling outside the collection hood and improving the cleaning effect of impurities.

[0006] The objective of this invention can be achieved by adopting the following technical solution:

[0007] A circulating, adjustable, and cleaning acrylic coating production filtration system includes a filter box, a feed pipe vertically positioned at the top center of the filter box, and a discharge pipe located at the bottom of the filter box.

[0008] An annular baffle is horizontally installed in the middle of the filter box. A stainless steel filter cartridge is vertically fixed to the top of the annular baffle. A positioning plate is horizontally fixed to the top of the stainless steel filter cartridge. A rotating shaft is vertically rotatably installed in the middle of the positioning plate. A rinsing hood that fits against the inner side of the stainless steel filter cartridge is fixedly installed on the side of the rotating shaft. Spray nozzles are evenly arranged along the height direction inside the rinsing hood. An L-shaped tube is fixedly installed at the top of the rotating shaft. A collection hood that fits against the outer side of the stainless steel filter cartridge is vertically fixed to the end of the L-shaped tube. The positions of the collection hood and the rinsing hood are opposite.

[0009] The inside of the rinsing hood is equipped with a swing mechanism that controls the up-and-down reciprocating swing of the nozzle;

[0010] The bottom end of the rotating shaft is equipped with a flushing fluid delivery mechanism for continuous delivery of flushing fluid;

[0011] The bottom of the filter box is equipped with a drive mechanism that controls the rotating shaft to rotate at a constant speed according to the flow of filtrate.

[0012] The side of the filter box is equipped with a speed adjustment mechanism that adjusts the rotation speed of the shaft according to the pressure difference between the inside and outside of the stainless steel filter cartridge.

[0013] The top of the outside of the filter box is equipped with a flushing liquid collection mechanism that communicates with the top of the L-shaped tube.

[0014] Preferably, the swing mechanism includes a rotating rod, a gear, a rack, and a reciprocating lifting assembly. The rotating rod is evenly rotated and installed between the two sides of the rinsing hood, and the rotating rod is equidistantly distributed along the height direction of the rinsing hood. The nozzles are respectively installed on the rotating rod. A gear is installed at one end of each rotating rod. A rack that meshes with the gear is vertically installed inside the rinsing hood. The bottom end of the rack is provided with a reciprocating lifting assembly.

[0015] Preferably, the reciprocating lifting assembly includes a slider and a corrugated groove. The bottom end of the rack passes through the rinsing hood and extends into the interior of the annular partition. The rack and the rinsing hood are vertically slidably connected. A corrugated groove is provided on the inner side of the annular partition along the circumferential direction. A slider is slidably arranged on the inner side of the corrugated groove. The slider is fixed to the bottom of the rack.

[0016] Preferably, the flushing fluid delivery mechanism includes a transfer chamber, a guide channel, a conduit, a diversion hose, and an injection assembly. The transfer chamber is fixedly installed in the middle of the filter box and located below the annular partition. A rotating shaft passes through the interior of the transfer chamber and is rotatably connected to it. The interior of the rotating shaft has a guide channel that communicates with the interior of the transfer chamber. A diversion hose is provided between the ends of the nozzles. A conduit is vertically provided on the outside of the stainless steel filter cartridge, and the conduit communicates with the interior of the diversion hose and the guide channel. An injection assembly is provided on the side of the transfer chamber.

[0017] Preferably, the injection assembly includes a first circulation pipe, a filtrate tank, and a first circulating water pump. The filtrate tank is located at the bottom outside the filter box and is connected to the end of the discharge pipe. The first circulating water pump is installed on the top of the filtrate tank. The input end of the first circulating water pump is connected to the inside of the filtrate tank. A first circulation pipe is provided between the output end of the first circulating water pump and the transfer chamber.

[0018] Preferably, the drive mechanism includes a diversion bucket, a volute, an impeller, and a drive shaft. The volute is installed at the bottom of the filter box, the diversion bucket is horizontally positioned at the top of the volute, and the outlet at the bottom of the diversion bucket is connected to the inlet of the volute. An impeller is rotatably installed in the middle of the volute, and a drive shaft is installed at the top of the impeller. The drive shaft extends to the top of the diversion bucket and is rotatably connected to the diversion bucket. A speed adjustment mechanism connects the top of the drive shaft to the bottom of the rotating shaft.

[0019] Preferably, the speed adjustment mechanism includes a splined shaft, a splined groove, a first magnet disk, a second magnet disk, and a spacing adjustment component. The splined groove is vertically opened at the bottom end of the rotating shaft. The splined shaft is vertically slidably arranged inside the splined groove. The first magnet disk is horizontally fixed at the bottom end of the splined shaft. The second magnet disk is horizontally arranged at the top end of the drive shaft, and the second magnet disk is located directly below the first magnet disk. A spacing adjustment component for adjusting the distance between the first magnet disk and the second magnet disk is provided on the outside of the filter box.

[0020] Preferably, the spacing adjustment assembly includes an inverted tube, a piston, a spring, a slide rod, a crossbar, a sealing cover, and a bearing. The inverted tube is fixed to the outside of the filter box, and the connection points between the inverted tube and the filter box are located at the top and bottom of the annular partition, respectively. A piston is vertically slidably installed inside the inverted tube. A spring is installed between the bottom of the piston and the bottom end of the inverted tube. A slide rod is vertically fixed to the bottom end of the piston, and the bottom end of the slide rod slides to the bottom of the inverted tube. A crossbar is vertically fixed to the bottom end of the inverted tube, and the crossbar extends into the inside of the filter box. A strip groove is opened on the filter box for the crossbar to pass through. A sealing cover is installed between the outside of the crossbar and the inner wall of the filter box, and the sealing cover blocks the strip groove. A bearing is fixed to the end of the crossbar, and the inner ring of the bearing is fixedly connected to the spline shaft.

[0021] Preferably, a first scraper is provided on the side of the collection hood away from the direction of movement, and a rotating roller is rotatably installed between the two ends of the collection hood on the side closer to the direction of movement. Two sets of rotating rollers are provided along the width direction of the collection hood, and a conveyor belt is provided between the two sets of rotating rollers. Rubber partitions are evenly provided on the outer side of the conveyor belt, and a second scraper is provided along the height direction at the middle position inside the collection hood. The bottom ends of the first scraper, the second scraper, and the rubber partitions are all in contact with the surface of the stainless steel filter cartridge.

[0022] Preferably, the flushing liquid collection mechanism includes a rotary joint, a discharge pipe, a collection tank, a second circulating water pump, and a second circulating pipe. The rotary joint is installed at the top of the L-shaped pipe, and the discharge pipe is installed at the top of the rotary joint. A collection tank is provided on the top of the outside of the filter box. The discharge pipe is connected to the inside of the collection tank. A second circulating water pump is installed on the top of the collection tank. The input end of the second circulating water pump is connected to the bottom of the inner part of the collection tank. A second circulating pipe is provided between the output end of the second circulating water pump and the feed pipe.

[0023] The beneficial effects of this invention are as follows:

[0024] The acrylic coating production filtration equipment with circulating adjustment and cleaning provided by the present invention has a rinsing cover and a collection cover respectively set at the inner and outer opposite positions of the filter cartridge. The rotating shaft can simultaneously drive the rinsing cover and the collection cover to slide around the inner and outer sides of the stainless steel filter cartridge. In conjunction with the drive mechanism, the rinsing liquid delivery mechanism and the rinsing liquid collection mechanism, the device can achieve continuous circulating backwashing and cleaning of the stainless steel filter cartridge during use without reaching the pressure difference set value, ensuring the cleanliness of the stainless steel filter cartridge surface and improving the filtration rate during use.

[0025] The drive mechanism, consisting of a flow-guiding bucket, volute, impeller, and drive shaft, is used in conjunction with a speed adjustment mechanism consisting of an i-shaped tube, piston, spring, slide rod, crossbar, sealing cover, bearing, spline shaft, spline groove, first magnet disc, and second magnet disc. This allows the flow of the filtered liquid to drive the active rotation of the shaft during filtration. Furthermore, the shaft speed is automatically adjusted based on the pressure difference between the inside and outside of the stainless steel filter cartridge, ensuring a high cleaning rate and effective cleaning of the stainless steel filter cartridge surface. This results in greater practicality and energy efficiency.

[0026] By incorporating a swing mechanism consisting of a rotating rod, gears, racks, sliders, and corrugated grooves inside the flushing hood, the spray nozzles can be automatically controlled to swing up and down during the rotation of the flushing hood, employing a pulse-type cleaning method to improve the backwashing effect during use.

[0027] The arrangement of the first scraper on the side away from the direction of rotation inside the collection hood, as well as the roller, conveyor belt, and rubber partition on the side closer to the direction of rotation inside the collection hood, can improve the sealing effect inside the collection hood and prevent the leakage of backwash liquid. In addition, the first and second scrapers ensure that impurities on the surface of the stainless steel filter cartridge can be scraped off only when the collection hood is covered, preventing impurities from falling outside the collection hood and improving the cleaning effect of impurities. Attached Figure Description

[0028] Figure 1 This is a front sectional view of a preferred embodiment of the acrylic coating production filtration equipment with cyclic adjustment and cleaning according to the present invention.

[0029] Figure 2 This is a partial external structural diagram of the filter cartridge in a preferred embodiment of the acrylic coating production filtration equipment with cyclic adjustment and cleaning according to the present invention.

[0030] Figure 3 A preferred embodiment of the acrylic coating production filtration equipment with circulating adjustment and cleaning according to the present invention Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4A diagram of a preferred embodiment of the oscillating mechanism in the acrylic coating production filtration equipment with cyclic adjustment and cleaning according to the present invention;

[0032] Figure 5 This is a diagram of the drive mechanism of a preferred embodiment of the acrylic coating production filtration equipment with cyclic adjustment and cleaning according to the present invention.

[0033] Figure 6 A diagram of a spacing adjustment component in a preferred embodiment of the acrylic coating production filtration equipment with cyclic adjustment and cleaning according to the present invention;

[0034] Figure 7 A cross-sectional view of the collection hood in a preferred embodiment of the acrylic paint production filtration equipment with cyclic adjustment and cleaning according to the present invention;

[0035] Figure 8 This is a front view of a preferred embodiment of the acrylic coating production filtration equipment with cyclic adjustment and cleaning according to the present invention.

[0036] In the diagram: 1. Filter box; 101. Feed pipe; 102. Discharge pipe;

[0037] 2. Annular baffle; 3. Stainless steel filter cartridge; 4. Positioning plate; 5. Rotating shaft; 6. Flushing hood; 7. Spray nozzle;

[0038] 8. Swinging mechanism; 801. Rotating rod; 802. Gear; 803. Rack; 804. Sliding block; 805. Corrugated groove;

[0039] 9. Fluid delivery mechanism; 901. Transfer chamber; 902. First circulation pipe; 903. Guide trough; 904. Conduit; 905. Diversion hose; 906. Filtration tank; 907. First circulating water pump;

[0040] 10. Drive mechanism; 1001. Diversion bucket; 1002. Volute; 1003. Impeller; 1004. Drive shaft;

[0041] 11. Speed ​​adjustment mechanism; 1101. I-shaped through pipe; 1102. Piston; 1103. Spring; 1104. Slide rod; 1105. Crossbar; 1106. Sealing cover; 1107. Bearing; 1108. Splined shaft; 1109. Splined groove; 1110. First magnet disk; 1111. Second magnet disk;

[0042] 12. Collection hood; 1201. First scraper; 1202. Second scraper; 1203. Rotary roller; 1204. Conveyor belt; 1205. Rubber partition;

[0043] 13. L-shaped pipe;

[0044] 14. Fluid collection mechanism; 1401. Rotary joint; 1402. Discharge pipe; 1403. Collection tank; 1404. Second circulating water pump; 1405. Second circulating pipe. Detailed Implementation

[0045] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0046] like Figures 1-8 As shown, this embodiment provides a circulating adjustment and cleaning acrylic coating production filtration device, including a filter box 1, a feed pipe 101 vertically arranged at the middle position of the top of the filter box 1, and a discharge pipe 102 opened at the bottom of the filter box 1.

[0047] An annular baffle 2 is horizontally arranged in the middle of the filter box 1. A stainless steel filter cylinder 3 is vertically fixed to the top of the annular baffle 2. A positioning plate 4 is horizontally fixed to the top of the stainless steel filter cylinder 3. A rotating shaft 5 is vertically rotatably installed in the middle of the positioning plate 4. A rinsing hood 6 that fits against the inner side of the stainless steel filter cylinder 3 is fixedly installed on the side of the rotating shaft 5. Spray nozzles 7 are evenly arranged along the height direction inside the rinsing hood 6. An L-shaped tube 13 is fixedly installed at the top of the rotating shaft 5. A collection hood 12 that fits against the outer side of the stainless steel filter cylinder 3 is vertically fixed to the end of the L-shaped tube 13. The positions of the collection hood 12 and the rinsing hood 6 are opposite.

[0048] The interior of the rinsing hood 6 is equipped with a swing mechanism 8 that controls the up-and-down reciprocating swing of the nozzle 7;

[0049] The bottom end of the rotating shaft 5 is provided with a flushing fluid conveying mechanism 9 for continuously conveying flushing fluid;

[0050] The bottom of the filter box 1 is equipped with a drive mechanism 10 that controls the rotating shaft 5 to rotate at a constant speed with the flow of filtrate.

[0051] The side of the filter box 1 is provided with a speed adjustment mechanism 11 that adjusts the speed of the rotating shaft 5 according to the pressure difference between the inside and outside of the stainless steel filter cartridge 3;

[0052] The top of the outer side of the filter box 1 is provided with a flushing liquid collection mechanism 14 that is connected to the top of the L-shaped tube 13.

[0053] Overall working principle: Acrylic paint enters the filter box 1 through the feed pipe 101, and after being filtered by the stainless steel filter cartridge 3, the filtrate is discharged from the discharge pipe 102 through the space below the annular partition 2. Impurities are trapped on the outside of the filter cartridge. The drive mechanism 10 uses the flow of filtrate as the source of energy, and drives the rotating shaft 5 to rotate through the speed adjustment mechanism 11, so that the rinsing hood 6 and the collection hood 12 rotate synchronously around the filter cartridge. During the rotation, the filtrate after filtration by the rinsing liquid conveying mechanism 9 is delivered to the nozzle 7 inside the rinsing hood 6 to backwash the inside of the filter cartridge. In addition, during the rotation of the rinsing hood 6, the swing mechanism 8 makes the nozzle 7 swing up and down to form a pulse rinsing, which improves the backwashing efficiency. Impurities are flushed to the outside of the filter cartridge. When the collection hood 12 rotates with the rotating shaft 5, the backwash liquid and impurities flow into the rinsing liquid collection mechanism 14 through the L-shaped pipe 13 to achieve recycling.

[0054] In this embodiment, the swing mechanism 8 includes a rotating rod 801, a gear 802, a rack 803, and a reciprocating lifting assembly. The rotating rod 801 is uniformly rotated and installed between the two sides of the rinsing hood 6, and the rotating rod 801 is equidistantly distributed along the height direction of the rinsing hood 6. The nozzles 7 are respectively installed on the rotating rod 801. A gear 802 is installed at one end of each rotating rod 801. A rack 803 that meshes with the gear 802 is vertically installed inside the rinsing hood 6. A reciprocating lifting assembly is provided at the bottom end of the rack 803.

[0055] Local working principle: When the rinsing hood 6 rotates, the reciprocating lifting assembly applies force to the rack 803, controlling the rack 803 to move up and down reciprocally. The rack 803 meshes with the gear 802, driving the rotating rod 801 to rotate reciprocally, causing the nozzle 7 mounted on the rotating rod 801 to swing up and down, thereby realizing pulse rinsing of the inside of the filter cartridge.

[0056] In this embodiment, the reciprocating lifting assembly includes a slider 804 and a corrugated groove 805. The bottom end of the rack 803 passes through the rinsing hood 6 and extends into the interior of the annular partition 2. The rack 803 and the rinsing hood 6 are vertically slidably connected. The inner side of the annular partition 2 is provided with a corrugated groove 805 along the circumferential direction. The slider 804 is slidably arranged on the inner side of the corrugated groove 805. The slider 804 is fixed to the bottom of the rack 803. The corrugated groove 805 adopts a sine wave or a trapezoidal wave with a peak height h = 5~8mm and a wavelength λ = 30~50mm, and is evenly distributed along the inner circumference of the annular partition 2.

[0057] Local working principle: When the flushing hood 6 rotates, the slider 804 slides along the corrugated groove 805 on the inner side of the annular partition 2, driving the rack 803 to move up and down reciprocally. When the rotation speed of the flushing hood 6 is 20r / min, the swing amplitude of the nozzle 7 is ±15°, forming a pulse flushing.

[0058] In this embodiment, the flushing fluid delivery mechanism 9 includes a transfer chamber 901, a guide groove 903, a conduit 904, a diversion hose 905, and an injection assembly. The transfer chamber 901 is fixedly installed in the middle of the filter box 1 and located below the annular partition 2. The rotating shaft 5 passes through the interior of the transfer chamber 901 and is rotatably connected to the transfer chamber 901. The interior of the rotating shaft 5 is provided with a guide groove 903 that communicates with the interior of the transfer chamber 901. A diversion hose 905 is provided between the ends of the nozzles 7. A conduit 904 is vertically provided on the outer side of the stainless steel filter cartridge 3, and the conduit 904 communicates with the interior of the diversion hose 905 and the guide groove 903. An injection assembly is provided on the side of the transfer chamber 901.

[0059] Local working principle: During backwashing, the injection component injects the filtered liquid into the interior of the transfer chamber 901. Then, the liquid is transported to the nozzle 7 in the flushing hood 6 through the guide groove 903 in the rotating shaft 5, the conduit 904 on the outside of the stainless steel filter cartridge 3 and the diversion hose 905 to form backwashing liquid.

[0060] In this embodiment, the injection assembly includes a first circulation pipe 902, a filtrate tank 906, and a first circulation water pump 907. The filtrate tank 906 is located at the bottom outside the filter box 1 and is connected to the end of the discharge pipe 102. The first circulation water pump 907 is installed on the top of the filtrate tank 906. The input end of the first circulation water pump 907 is connected to the inside of the filtrate tank 906. The first circulation pipe 902 is provided between the output end of the first circulation water pump 907 and the transfer chamber 901.

[0061] Local working principle: The filtrate after filtration is collected and stored inside the filtrate tank 906. During backwashing, the first circulating water pump 907 pumps the filtrate in the filtrate tank 906 into the transfer chamber 901 through the first circulating pipe 902.

[0062] In this embodiment, the drive mechanism 10 includes a flow guide 1001, a volute 1002, an impeller 1003, and a drive shaft 1004. The volute 1002 is installed at the bottom of the filter box 1. The flow guide 1001 is horizontally arranged at the top of the volute 1002, and the outlet at the bottom of the flow guide 1001 is connected to the inlet of the volute 1002. The opening angle of the flow guide 1001 is 60° to 90°, and the ratio of the diameter of the outlet at the bottom to the diameter of the inlet of the volute 1002 is 1.2:1 to ensure that the filtrate flow rate is uniform and there is no turbulence. The helix angle of the volute 1002 should be designed according to the Archimedean spiral, with 1.5 to 2 helix turns and an inner wall roughness ≤ Ra1.6μm to reduce fluid resistance.

[0063] An impeller 1003 is rotatably mounted in the middle of the volute 1002. The impeller 1003 has 6 to 8 backward-curved blades with an inclination angle of 25° to 30° and a diameter ratio of 0.8:1 to the throat diameter of the volute, ensuring that the driving torque matches the filtrate flow rate. A drive shaft 1004 is mounted on the top of the impeller 1003. The drive shaft 1004 extends to the top of the diversion bucket 1001 and is rotatably connected to the diversion bucket 1001. The speed adjustment mechanism 11 connects the top of the drive shaft 1004 to the bottom of the rotating shaft 5.

[0064] Local working principle: The filtered filtrate flows into the volute 1002 through the guide bucket 1001, which drives the impeller 1003 to rotate. The impeller 1003 drives the speed adjustment mechanism 11 through the drive shaft 1004, which in turn drives the rotating shaft 5 to rotate.

[0065] In this embodiment, the speed adjustment mechanism 11 includes a splined shaft 1108, a splined groove 1109, a first magnet disk 1110, a second magnet disk 1111, and a spacing adjustment component. The splined groove 1109 is vertically opened at the bottom end of the rotating shaft 5. The splined shaft 1108 is vertically slidably arranged inside the splined groove 1109. The first magnet disk 1110 is horizontally fixed at the bottom end of the splined shaft 1108. The second magnet disk 1111 is horizontally arranged at the top end of the drive shaft 1004, and the second magnet disk 1111 is located directly below the first magnet disk 1110. A spacing adjustment component for adjusting the distance between the first magnet disk 1110 and the second magnet disk 1111 is provided on the outside of the filter box 1.

[0066] Local working principle: When the drive shaft 1004 drives the second magnet disk 1111 to rotate, the first magnet disk 1110 can be controlled to rotate due to the magnetic coupling between the second magnet disk 1111 and the first magnet disk 1110. The first magnet disk 1110 drives the rotating shaft 5 to rotate. In use, the spacing between the second magnet disk 1111 and the first magnet disk 1110 can be adjusted by using the spacing adjustment component to change the magnetic coupling strength and adjust the rotation speed of the rotating shaft 5. The magnet disk uses neodymium iron boron permanent magnets with a remanence ≥1.4T, coercivity ≥1100kA / m, diameter 80~100mm, thickness 15~20mm, and surface plated with nickel-cobalt alloy for corrosion protection.

[0067] In this embodiment, the spacing adjustment assembly includes an inverted pipe 1101, a piston 1102, a spring 1103, a slide rod 1104, a crossbar 1105, a sealing cover 1106, and a bearing 1107. The inverted pipe 1101 is fixed to the outside of the filter box 1, and the connection points between the inverted pipe 1101 and the filter box 1 are located at the top and bottom of the annular partition 2, respectively. A piston 1102 is vertically slidably arranged inside the inverted pipe 1101. A spring 1103 is provided between the bottom of the piston 1102 and the bottom end of the inverted pipe 1101. A sliding rod 1104 is vertically fixed at one end, and the bottom end of the sliding rod 1104 slides to the bottom of the C-shaped tube 1101. A crossbar 1105 is vertically fixed at the bottom end of the C-shaped tube 1101, and the crossbar 1105 extends into the interior of the filter box 1. A strip groove is provided on the filter box 1 for the crossbar 1105 to pass through. A sealing cover 1106 is provided between the outer side of the crossbar 1105 and the inner wall of the filter box 1, and the sealing cover 1106 blocks the strip groove. A bearing 1107 is fixed at the end of the crossbar 1105, and the inner ring of the bearing 1107 is fixedly connected to the spline shaft 1108.

[0068] Local working principle: When the pressure difference between the inside and outside of the filter cartridge changes, the pressure difference between the upper and lower parts of the annular baffle 2 pushes the piston 1102 in the inverted tube 1101 to move, compressing or stretching the spring 1103. The piston 1102 drives the spline shaft 1108 to slide up and down through the slide rod 1104 and the crossbar 1105, adjusting the distance between the first magnetic disk 1110 and the second magnetic disk 1111. The change in distance changes the magnetic coupling strength, thereby adjusting the speed transmission efficiency between the drive shaft 1004 and the rotating shaft 5. The greater the pressure difference, the smaller the distance between the two magnetic disks, the stronger the magnetic force, the faster the rotation speed of the rotating shaft 5, and the faster the cleaning. Under normal operation, the distance between the two magnetic disks is 5-10mm, corresponding to a speed adjustment range of 10-30r / min. Under the standard distance, the transmission efficiency is ≥85%. When the pressure difference between the inside and outside of the stainless steel filter cartridge 3 exceeds 0.3MPa, the distance can be reduced to 2-5mm, and the speed can be increased to 30-50r / min.

[0069] In this embodiment, a first scraper 1201 is provided on the side of the collection cover 12 away from the direction of movement. A rotating roller 1203 is rotatably mounted between the two ends of the collection cover 12 on the side closest to the direction of movement. Two sets of rotating rollers 1203 are provided along the width direction of the collection cover 12. A conveyor belt 1204 is provided between the two sets of rotating rollers 1203. Rubber partitions 1205 are evenly provided on the outer side of the conveyor belt 1204. A second scraper 1202 is provided along the height direction at the middle position inside the collection cover 12. The bottom ends of the first scraper 1201, the second scraper 1202, and the rubber partitions 1205 are all... The scraper, which is attached to the surface of the stainless steel filter cartridge 3, is made of polyurethane (hardness Shore A 80-90) with a Teflon coating. The bottom of the scraper is machined into a rounded corner of R1-R2mm. The contact pressure between the scraper and the surface of the stainless steel filter cartridge 3 is 0.05-0.1MPa, ensuring that impurities are thoroughly scraped off without damaging the filter cartridge. The rubber baffle 1205 is made of ethylene propylene diene monomer (EPDM) rubber with a thickness of 3-5mm and a hardness of Shore A 60-70. The gap between the baffle and the surface of the filter cartridge is ≤0.5mm, ensuring that the inside of the collection hood 12 is sealed and preventing backwash liquid leakage.

[0070] Local working principle: When the collection cover 12 rotates with the rotating shaft 5, the rubber partition 1205 near the moving direction side is attached to the surface of the stainless steel filter cartridge 3. As the collection cover 12 moves, the rotating roller 1203 and the conveyor belt 1204 drive the rubber partition 1205 to rotate, forming a sealed cavity to prevent backwash liquid leakage. The second scraper 1202 initially scrapes off the impurities on the outside of the filter cartridge, and the first scraper 1201 further scrapes off the impurities on the outside of the filter cartridge. Then the impurities are collected into the L-shaped pipe 13.

[0071] In this embodiment, the flushing fluid collection mechanism 14 includes a rotary joint 1401, a discharge pipe 1402, a collection tank 1403, a second circulating water pump 1404, and a second circulating pipe 1405. The rotary joint 1401 is installed at the top of the L-shaped pipe 13, and the discharge pipe 1402 is installed at the top of the rotary joint 1401. The collection tank 1403 is provided on the top of the outer side of the filter box 1. The discharge pipe 1402 is connected to the inside of the collection tank 1403. The second circulating water pump 1404 is installed on the top of the collection tank 1403. The input end of the second circulating water pump 1404 is connected to the bottom of the inner side of the collection tank 1403. The second circulating pipe 1405 is provided between the output end of the second circulating water pump 1404 and the feed pipe 101.

[0072] Local working principle: Backwash liquid and impurities flow into discharge pipe 1402 through rotary joint 1401 via L-shaped pipe 13 and enter collection tank 1403. Second circulating water pump 1404 sends the liquid in collection tank 1403 back to feed pipe 101 through second circulating pipe 1405, realizing the recycling of backwash liquid. At the end of the filtration of a single batch of raw materials, the inside of collection tank 1403 is a high particle concentration paint solution, which can be reprocessed separately.

[0073] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A circulating adjustment and cleaning acrylic coating production filtration device, including a filter box (1), a feed pipe (101) vertically set at the middle position of the top of the filter box (1) and a discharge pipe (102) opened at the bottom of the filter box (1); Its features are: A ring-shaped partition (2) is horizontally arranged in the middle of the filter box (1). A stainless steel filter cylinder (3) is vertically fixed at the top of the ring-shaped partition (2). A positioning plate (4) is horizontally fixed at the top of the stainless steel filter cylinder (3). A rotating shaft (5) is vertically rotatably installed in the middle of the positioning plate (4). A rinsing cover (6) that fits against the inner side of the stainless steel filter cylinder (3) is fixedly installed on the side of the rotating shaft (5). Spray nozzles (7) are evenly arranged in the height direction inside the rinsing cover (6). An L-shaped tube (13) is fixedly installed at the top of the rotating shaft (5). A collection cover (12) that fits against the outer side of the stainless steel filter cylinder (3) is vertically fixed at the end of the L-shaped tube (13). The positions of the collection cover (12) and the rinsing cover (6) are opposite. The inside of the flushing hood (6) is equipped with a swing mechanism (8) that controls the up-and-down reciprocating swing of the nozzle (7); The bottom end of the rotating shaft (5) is provided with a flushing fluid delivery mechanism (9) for continuously delivering flushing fluid; The bottom of the filter box (1) is equipped with a drive mechanism (10) that rotates at a constant speed with the control shaft (5) as the filtrate flows; The side of the filter box (1) is provided with a speed adjustment mechanism (11) that adjusts the speed of the rotating shaft (5) according to the pressure difference between the inside and outside of the stainless steel filter cylinder (3); The top of the outside of the filter box (1) is provided with a flushing liquid collection mechanism (14) that is connected to the top of the L-shaped tube (13).

2. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 1, characterized in that: The swing mechanism (8) includes a rotating rod (801), a gear (802), a rack (803), and a reciprocating lifting assembly. The rotating rod (801) is evenly rotated between the two sides of the flushing hood (6), and the rotating rod (801) is equidistantly distributed along the height direction of the flushing hood (6). The nozzles (7) are respectively installed on the rotating rod (801). A gear (802) is installed at one end of each rotating rod (801). A rack (803) that meshes with the gear (802) is vertically installed inside the flushing hood (6). A reciprocating lifting assembly is provided at the bottom end of the rack (803).

3. The circulating adjustment and cleaning acrylic coating production filtration equipment according to claim 2, characterized in that: The reciprocating lifting assembly includes a slider (804) and a corrugated groove (805). The bottom end of the rack (803) passes through the flushing hood (6) and extends into the interior of the annular partition (2). The rack (803) and the flushing hood (6) are vertically slidably connected. The inner side of the annular partition (2) is provided with a corrugated groove (805) along the circumferential direction. The slider (804) is slidably arranged on the inner side of the corrugated groove (805). The slider (804) is fixed to the bottom of the rack (803).

4. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 1, characterized in that: The flushing fluid delivery mechanism (9) includes a transfer chamber (901), a guide groove (903), a conduit (904), a diversion hose (905), and an injection assembly. The transfer chamber (901) is fixedly installed in the middle of the filter box (1) and located below the annular partition (2). The rotating shaft (5) passes through the interior of the transfer chamber (901) and is rotatably connected to the transfer chamber (901). The interior of the rotating shaft (5) is provided with a guide groove (903) that communicates with the interior of the transfer chamber (901). A diversion hose (905) is provided between the ends of the nozzles (7). A conduit (904) is vertically provided on the outside of the stainless steel filter cartridge (3), and the conduit (904) communicates with the interior of the diversion hose (905) and the guide groove (903). An injection assembly is provided on the side of the transfer chamber (901).

5. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 4, characterized in that: The injection assembly includes a first circulation pipe (902), a filtrate tank (906), and a first circulation water pump (907). The filtrate tank (906) is located at the bottom outside the filter box (1) and is connected to the end of the discharge pipe (102). The first circulation water pump (907) is installed on the top of the filtrate tank (906). The input end of the first circulation water pump (907) is connected to the inside of the filtrate tank (906). The first circulation pipe (902) is provided between the output end of the first circulation water pump (907) and the transfer chamber (901).

6. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 1, characterized in that: The drive mechanism (10) includes a diversion bucket (1001), a volute (1002), an impeller (1003), and a drive shaft (1004). The volute (1002) is installed at the bottom of the filter box (1). The diversion bucket (1001) is horizontally arranged at the top of the volute (1002), and the outlet at the bottom of the diversion bucket (1001) is connected to the liquid inlet of the volute (1002). The impeller (1003) is rotatably installed at the middle position inside the volute (1002). The drive shaft (1004) is installed at the top of the impeller (1003). The drive shaft (1004) extends to the top of the diversion bucket (1001) and is rotatably connected to the diversion bucket (1001). The speed adjustment mechanism (11) connects the top of the drive shaft (1004) to the bottom of the rotating shaft (5).

7. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 6, characterized in that: The speed adjustment mechanism (11) includes a spline shaft (1108), a spline groove (1109), a first magnet disk (1110), a second magnet disk (1111), and a spacing adjustment component. The spline groove (1109) is vertically opened at the bottom end of the rotating shaft (5). The spline shaft (1108) is vertically slidably arranged inside the spline groove (1109). The first magnet disk (1110) is horizontally fixed at the bottom end of the spline shaft (1108). The second magnet disk (1111) is horizontally arranged at the top end of the drive shaft (1004), and the second magnet disk (1111) is located directly below the first magnet disk (1110). A spacing adjustment component for adjusting the distance between the first magnet disk (1110) and the second magnet disk (1111) is provided on the outside of the filter box (1).

8. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 7, characterized in that: The spacing adjustment assembly includes an inverted pipe (1101), a piston (1102), a spring (1103), a slide rod (1104), a crossbar (1105), a sealing cover (1106), and a bearing (1107). The inverted pipe (1101) is fixed to the outside of the filter box (1), and the connection between the inverted pipe (1101) and the filter box (1) is located at the top and bottom of the annular partition (2), respectively. A piston (1102) is vertically slidably arranged inside the inverted pipe (1101). A spring (1103) is provided between the bottom of the piston (1102) and the bottom end of the inverted pipe (1101). The bottom end of the piston (1102) is vertically slidable. A sliding rod (1104) is fixed, and the bottom end of the sliding rod (1104) slides to the bottom of the C-shaped tube (1101). A crossbar (1105) is vertically fixed at the bottom end of the C-shaped tube (1101). The crossbar (1105) extends into the interior of the filter box (1). A strip groove is provided on the filter box (1) for the crossbar (1105) to pass through. A sealing cover (1106) is provided between the outer side of the crossbar (1105) and the inner wall of the filter box (1), and the sealing cover (1106) blocks the strip groove. A bearing (1107) is fixed at the end of the crossbar (1105), and the inner ring of the bearing (1107) is fixedly connected to the spline shaft (1108).

9. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 1, characterized in that: A first scraper (1201) is provided on the side of the collection cover (12) away from the direction of movement. A rotating roller (1203) is rotatably installed between the two ends of the collection cover (12) near the direction of movement. Two sets of rotating rollers (1203) are provided along the width direction of the collection cover (12). A conveyor belt (1204) is provided between the two sets of rotating rollers (1203). Rubber partitions (1205) are evenly provided on the outer side of the conveyor belt (1204). A second scraper (1202) is provided along the height direction at the middle position inside the collection cover (12). The bottom ends of the first scraper (1201), the second scraper (1202) and the rubber partitions (1205) are all in contact with the surface of the stainless steel filter cylinder (3).

10. The acrylic coating production filtration equipment with circulating adjustment and cleaning according to claim 1, characterized in that: The flushing fluid collection mechanism (14) includes a rotary joint (1401), a discharge pipe (1402), a collection tank (1403), a second circulating water pump (1404), and a second circulating pipe (1405). The rotary joint (1401) is installed at the top of the L-shaped pipe (13). The discharge pipe (1402) is installed at the top of the rotary joint (1401). The collection tank (1403) is provided on the top of the outside of the filter box (1). The discharge pipe (1402) is connected to the inside of the collection tank (1403). The second circulating water pump (1404) is installed on the top of the collection tank (1403). The input end of the second circulating water pump (1404) is connected to the bottom of the collection tank (1403). The second circulating pipe (1405) is provided between the output end of the second circulating water pump (1404) and the feed pipe (101).

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