A coating liquid stirring and processing device with defoaming and filtration

Abstract

The present invention relates to the technical field of coating liquid processing, and specifically relates to a coating liquid stirring and processing device with defoaming and filtration, including a coating tank, a shaft rod, a feed inlet, and a sizing pipe. The bottom of the coating tank is connected with a three-way discharge pipe. The feed inlet is arranged at the top of the side of the coating tank. The sizing pipe is communicated with one of the discharge ends of the three-way discharge pipe. A circular filter plate is arranged in the three-way discharge pipe upstream of the sizing pipe. The circular filter plate is evenly distributed with filter holes A. The shaft rod is rotatably installed in the coating tank. By arranging the three-way discharge pipe at the bottom of the coating tank and connecting the sizing pipe to the discharge end of the three-way discharge pipe, the circular filter plate in the three-way discharge pipe can not only filter the slurry but also eliminate the bubbles in the slurry. After that, the filtered and defoamed slurry is directly sized to the downstream process through the sizing pipe, combining filtration, defoaming, and sizing adaptability, effectively improving the subsequent coating quality.

Description

Technical Field

[0001] The present invention relates to the technical field of coating solution processing, and particularly to a coating solution stirring and processing device with defoaming and filtration functions. Background Art

[0002] Coating technology is a technology widely used in pharmaceutical preparations. By coating a uniform film on the surface of tablets or granules, it can protect drugs, improve the stability and bioavailability of drugs, or control the drug release rate. The coating material can be water-soluble or insoluble, and common ones include sugar coating, enteric coating, and sustained-release coating, etc. Coating technology can optimize the performance of drugs, extend the shelf life of drugs, and improve the patient's medication experience. In addition to the pharmaceutical field, coating technology is also widely used in the food field.

[0003] During the preparation of the coating solution, the sizing port is arranged on the coating solution tank. After the coating solution is stirred in the coating tank, it needs to be discharged from the coating tank for filtration, and then poured back into the tank after filtration, and then conveyed to the next process through the sizing port. However, the process of filtration involves pouring the coating solution out of the coating tank and then pouring it back, which is a cumbersome operation, increasing the preparation time and reducing the preparation efficiency.

[0004] In addition, the traditional stirring method is prone to precipitation of dissolved substances and incomplete stirring. Secondly, the process of pouring out and pouring back in the above filtration will cause more and more bubbles to appear in the coating solution. Since the sizing port is directly set on the coating tank, the bubbles cannot be effectively eliminated, resulting in a large amount of bubbles in the prepared coating solution, causing uneven coating after coating, and poor color uniformity of the coating, thereby leading to unqualified appearance and functional quality of the coating. Summary of the Invention

[0005] The purpose of the present invention is to provide a coating solution stirring and processing device with defoaming and filtration functions to solve the technical problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions.

[0007] A coating liquid stirring and processing device with defoaming and filtering, including a coating tank, a shaft rod, a feed inlet and a sizing pipe. The bottom of the coating tank is connected with a three-way discharge pipe. The feed inlet is arranged at the top of the side of the coating tank. The sizing pipe is communicated with one of the discharge ends of the three-way discharge pipe. A circular filter plate is arranged in the three-way discharge pipe upstream of the sizing pipe. The circular filter plate is evenly distributed with filter holes A. The shaft rod is rotatably installed in the coating tank, and the top end extends through to the upper part of the coating tank, and the bottom end is close to the inner bottom of the coating tank. A first driving mechanism for driving the shaft rod to rotate is arranged at the top of the coating tank. A mounting seat is fixed to the bottom end of the shaft rod through a connecting seat. A plurality of sector filter plates are arranged in a circular array around the axis on the outer surface of the mounting seat. Each sector filter plate is evenly distributed with filter holes B. A second driving mechanism for driving each sector filter plate to rotate synchronously is jointly arranged in the connecting seat and the mounting seat. When each sector filter plate rotates and adjusts to the horizontal position, a circular filter plate adapted to the inner diameter size of the coating tank is formed.

[0008] Preferably, the second driving mechanism includes an electric push cylinder A, a mounting disc, racks, rotating shafts and gears with the number matching that of the sector filter plates. An inner cavity is jointly arranged in the connecting seat and the mounting seat. The electric push cylinder A is vertically fixed in the inner cavity. The mounting disc is fixed to the end of the telescopic rod of the electric push cylinder A and slidably fits on the inner wall of the inner cavity. Each rotating shaft is arranged in a circular array around the mounting seat and is rotatably installed through the side wall of the mounting seat. The end parts of each rotating shaft located outside the mounting seat are respectively fixed to the corresponding sector filter plates. Gear sleeves are fixedly sleeved on the end parts of each rotating shaft located in the inner cavity. Each rack is arranged in a circular array below the mounting disc and meshes with the corresponding gear.

[0009] Preferably, the three-way discharge pipe is composed of a feed pipe, a discharge pipe A and a discharge pipe B. The feed pipe is vertically communicated with the bottom of the coating tank. The discharge pipe B is vertically communicated with the bottom end of the feed pipe. The discharge pipe A is connected to the side of the feed pipe. The sizing pipe is connected to the end of the discharge pipe A. The circular filter plate is fixedly installed in the discharge pipe A. A first ring body and a second ring body are respectively and fixedly matched on the inner wall of the feed pipe from top to bottom. A sealing plate is arranged between the first ring body and the second ring body in the feed pipe. A spring B extending vertically is fixed on the upper surface of the second ring body. The sealing plate is fixed to the top end of the spring B. The outer diameter of the sealing plate is smaller than the inner diameter of the feed pipe. The sealing plate is in contact and cooperation with the lower surface of the first ring body. A push rod is fixed to the lower surface of the mounting disc. The push rod vertically penetrates and extends to the lower part of the mounting seat and is in contact and cooperation with the upper surface of the sealing plate. When the electric push cylinder A pushes the mounting disc to descend to the limit position, each sector filter plate rotates to the horizontal state to form a circular filter plate. At the same time, the bottom end of the push rod pushes the sealing plate downward, so that the sealing plate is separated from the first ring body.

[0010] Preferably, a horizontally extending slot is provided on one side of the discharge pipe B. A sealing plate for sealing the discharge pipe B is slidably inserted into the slot. An installation frame is fixed on the outer wall of the discharge pipe B. An electric push cylinder B is horizontally fixed on the installation frame. The end of the telescopic rod of the electric push cylinder B is fixedly connected to the side of the sealing plate.

[0011] Preferably, a vertically extending connecting arm is fixed on the telescopic rod of the electric push cylinder B. A guide rod is slidably penetrated through the center of the circular filter plate. One end of the guide rod slides through to the outside of the feed pipe and is fixed to the connecting arm. The other end is fixed with a center seat. Installation plates are evenly distributed on the outer peripheral surface of the center seat. Pushing needles are evenly distributed on each installation plate. The pushing needles can be inserted into the filter holes A one by one.

[0012] Preferably, a floating sweeping mechanism is provided on the shaft rod near the inner top of the coating tank. The floating sweeping mechanism includes a square sleeve seat, a buoyancy seat and flexible floating strips. The square sleeve seat is fixedly sleeved on the shaft rod. The buoyancy seat is sleeved on the square sleeve seat and can slide vertically. Flexible floating strips are installed on the four side surfaces of the buoyancy seat. The flexible floating strips are composed of several buoyancy blocks, and adjacent buoyancy blocks are hinged through hinge seats.

[0013] Preferably, a stirring mechanism is provided on the shaft rod between the floating sweeping mechanism and the connecting seat. The stirring mechanism includes a disc seat and stirring rods. A plurality of disc seats are sleeved on the shaft rod at intervals in the vertical direction. Stirring rods are evenly distributed on the outer peripheral walls of the disc seats. The bottom disc seat is fixed to the shaft rod, and the rest of the disc seats can slide up and down along the shaft rod. Springs A are sleeved outside the shaft rod between adjacent disc seats. The top end of the spring A is fixed to the lower surface of the corresponding disc seat above, and the bottom end is fixed to the upper surface of the corresponding disc seat below. Connecting ropes are evenly distributed on the upper surface of the top disc seat. The top ends of the connecting ropes are fixed to the lower surface of the buoyancy seat.

[0014] Preferably, the installation seat is an octahedron. The number of fan-shaped filter plates arranged is four. The rotating shaft is perpendicular to the corresponding side of the installation seat. The end of the fan-shaped filter plate away from the rotating shaft is movably attached to the inner wall of the coating tank, and the side close to the rotating shaft is movably attached to the corresponding side of the installation seat. Flexible rods A are arranged in an array on one side of the fan-shaped filter plate, and flexible rods B are arranged in an array on the other side. When each fan-shaped filter plate rotates to the horizontal state, the flexible rods A on the side of the filter hole B are spaced and staggered with the flexible rods B on the side of the adjacent filter hole B.

[0015] Preferably, the first driving mechanism includes a motor frame, a driving motor and a coupling. The motor frame is fixed on the top of the coating tank. The driving motor is fixed above the coating tank through the motor frame. The output shaft of the driving motor is fixedly connected to the top end of the shaft rod through the coupling for transmission connection.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0017] 1. In the present invention, a three-way discharge pipe is arranged at the bottom of the coating tank, and the sizing pipe is connected to the discharge end of the three-way discharge pipe. The circular filter plate in the three-way discharge pipe can not only filter the slurry but also eliminate the bubbles in the slurry. Then, the filtered and defoamed slurry is directly sized to the downstream process through the sizing pipe, combining filtration, defoaming, and sizing adaptability, effectively improving the subsequent coating quality. In addition, there is no need to discharge the slurry and then pour it back, which takes a short time and has high efficiency.

[0018] 2. During stirring in the present invention, each sector-shaped filter plate is adjusted to an inclined state, having a large contact area with the slurry, which can stir the slurry at the bottom of the coating tank to avoid precipitation of dissolved substances. In addition, it can intercept and eliminate the bubbles generated during the stirring process. The inclination angle of the sector-shaped filter plate is adjustable to stir the slurry to different degrees. During discharging, each sector-shaped filter plate is adjusted to a horizontal state to form a complete circular filter plate, which can intercept and eliminate the bubbles in the slurry in advance, with a large defoaming coverage area. In addition, when discharging, by driving the complete circular filter plate to rotate, on the one hand, it provides a stirring effect to avoid dissolution and precipitation, and on the other hand, the moving complete circular filter plate has a better effect of intercepting and eliminating bubbles, improving the defoaming quality.

[0019] 3. In the present invention, through the telescopic operation of the electric push cylinder A, the push rod is driven by the mounting plate to lift and lower synchronously. The opening and closing of the sealing plate are realized by the contact cooperation between the push rod and the sealing plate and the elastic reset function of the spring B, achieving a linkage effect. There is no need to use an additional driving source to drive the opening and closing of the sealing plate, resulting in low equipment cost investment. In addition, the opening and closing of the sealing plate and the flipping of the sector-shaped filter plate are adapted to the timing and state of stirring and discharging, with a reasonable structural layout and a strong linkage effect.

[0020] 4. When the electric push cylinder B retracts to drive the blocking plate to slide and discharge large-particle impurities, through the connection of the connecting arm and the guide rod, the central seat, the mounting plate, and the pushing needles can be driven to move towards the side close to the electric push cylinder B. Finally, each pushing needle is inserted into the corresponding filter hole A, and the large particles that have drilled into the filter hole A can be pushed out, realizing the cleaning of the filter hole A, avoiding excessive entry of large particles into the filter hole A and causing blockage. Moreover, the movement of the pushing needles relies on the drive of the electric push cylinder B, achieving a linkage effect without setting an additional drive, reducing the equipment cost investment.

[0021] 5. In the present invention, the buoyancy seat and the flexible floating strip are attached to the surface of the slurry, which can change the surface tension of the slurry, reduce the generation of bubbles during stirring. In addition, the bubbles formed below the liquid surface float upward to the liquid surface. When the square socket, the buoyancy seat and the flexible floating strip rotate following the shaft rod, they can destroy and sweep away the bubbles at the liquid surface, further reducing the bubble content in the slurry. Secondly, the buoyancy seat and the flexible floating strip can adaptively lift and lower through buoyancy, with high adaptability. In addition, the flexible floating strip formed by sequentially hinging a number of buoyancy blocks has the ability of bending deformation and can adaptively deform according to the fluctuation of the liquid surface, ensuring that the flexible floating strip can effectively fit the liquid surface for defoaming work.

[0022] 6. When the buoyancy seat and the flexible floating strip in the present invention perform height adaptive adjustment through buoyancy, under the connection action of the connecting rope and the elastic force of spring A, the disc seats except the lowermost one can be driven to lift and lower synchronously to adaptively adjust the stirring coverage range of the stirring rod in the vertical direction according to the amount of slurry in the coating tank, improving the stirring effect on the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the partial structure inside the coating tank in the present invention;

[0025] Figure 3 is a detailed structural schematic diagram of the floating and sweeping mechanism in the present invention;

[0026] Figure 4 is a detailed structural schematic diagram of the flexible floating plate in the present invention;

[0027] Figure 5 is a detailed structural schematic diagram of the stirring mechanism in the present invention;

[0028] Figure 6 is a schematic diagram of the structure when the sector filter plate in the present invention is closed into a whole circular filter plate;

[0029] Figure 7 is Figure 6 a schematic diagram of the enlarged structure at A in

[0030] Figure 8 is a schematic diagram of the unfolded state of the sector filter plate in the present invention;

[0031] Figure 9 is a schematic diagram of the installation of the sector filter plate structure in the present invention;

[0032] Figure 10 is Figure 9 a schematic diagram of the enlarged structure at B in

[0033] Figure 11Schematic diagram of the detailed structure of the three-way discharge pipe in the present invention;

[0034] Figure 12 Partial structural sectional view of the three-way discharge pipe in the present invention;

[0035] Figure 13 is Figure 12 Enlarged schematic view of the structure at position C in

[0036] In the figure: 1, coating tank; 11, shaft rod; 111, connecting seat; 112, mounting seat; 113, inner cavity channel; 12, feed inlet; 13, sizing pipe; 2, three-way discharge pipe; 21, feed pipe; 22, discharge pipe A; 23, discharge pipe B; 231, slot; 24, circular filter plate; 241, filter hole A; 3, first driving mechanism; 31, motor frame; 32, driving motor; 33, coupling; 4, sector filter plate; 41, filter hole B; 42, flexible rod A; 43, flexible rod B; 5, second driving mechanism; 51, electric push cylinder A; 52, mounting plate; 53, rack; 54, rotating shaft; 55, gear; 6, floating sweeping mechanism; 61, square socket; 611, retaining seat; 62, buoyancy seat; 63, flexible floating strip; 631, buoyancy block; 632, hinge seat; 7, stirring mechanism; 71, disc seat; 72, stirring rod; 73, spring A; 74, connecting rope; 8, sealing plate; 81, mounting frame; 82, electric push cylinder B; 83, connecting arm; 84, guide rod; 85, central seat; 86, mounting plate; 87, pushing needle; 9, push rod; 91, first ring body; 92, second ring body; 93, sealing plate; 931, sealing ring; 94, spring B. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1-13, the present invention provides a coating liquid stirring and processing device with defoaming and filtration, including a coating tank 1, a shaft rod 11, a feed inlet 12 and a sizing pipe 13. A three-way discharge pipe 2 is connected to the bottom of the coating tank 1. The feed inlet 12 is arranged at the top of the side of the coating tank 1 for supplying the coating liquid into the coating tank 1. The sizing pipe 13 is communicated with one of the discharge ends of the three-way discharge pipe 2 for sizing the prepared coating liquid into the next process. A circular filter plate 24 is arranged in the three-way discharge pipe 2 upstream of the sizing pipe 13. The circular filter plate 24 is evenly distributed with filter holes A241. The filter holes A241 allow the particulate matter and slurry with a composite particle size to pass through, and the large particle slurry that is not completely dissolved is filtered on one side by the circular filter plate 24 to avoid the influence of the large particle slurry on the downstream process and achieve the slurry filtration effect. In addition, the circular filter plate 24 can intercept, extrude and rub the uneliminated bubbles, causing the bubbles to break and dissipate, realizing the function of eliminating bubbles. The circular filter plate 24 and the filter holes A241 on it serve both as a filtering component and as a defoaming component. Arranging the sizing pipe 13 at the discharge end of the three-way discharge pipe 2 can size the filtered and defoamed slurry into the downstream process, improving the subsequent coating quality. In addition, there is no need to discharge the slurry and then pour it back, which takes a short time and has high efficiency.

[0039] The shaft rod 11 is rotatably installed in the coating tank 1, and the top end penetrates and extends above the coating tank 1, and the bottom end is close to the inner bottom of the coating tank 1. A first driving mechanism 3 for driving the rotation of the shaft rod 11 is arranged at the top of the coating tank 1. A mounting seat 112 is fixed to the bottom end of the shaft rod 11 through a connecting seat 111, specifically, the connecting seat 111 is fixed to the bottom end of the shaft rod 11, and the mounting seat 112 is fixed to the bottom end of the connecting seat 111. A plurality of sector filter plates 4 are arranged in a circular array around the axis on the outer surface of the mounting seat 112. Each sector filter plate 4 is evenly distributed with filter holes B41. The aperture of the filter holes B41 is larger than that of the filter holes A241, allowing the slurry and large particles to pass through to avoid blockage. A second driving mechanism 5 for driving the synchronous rotation of each sector filter plate 4 is jointly arranged in the connecting seat 111 and the mounting seat 112. By the operation of the first driving mechanism 3 to drive the rotation of the shaft rod 11, under the connection action of the connecting seat 111 and the mounting seat 112, each sector filter plate 4 can be driven to rotate in the coating tank 1.

[0040] As Figure 2 and Figure 6 shown, when each sector filter plate 4 is rotated and adjusted to the horizontal, the sector filter plates 4 are closed to form a whole circular filter plate adapted to the inner diameter size of the coating tank 1. During discharging, the bubbles in the slurry can be intercepted and eliminated in advance. As Figure 8 shown, when the second driving mechanism 5 works to drive each sector filter plate 4 to rotate to a state of tending to be vertically unfolded, a gap is formed between adjacent two sector filter plates 4. At this time, the sector filter plates 4 are used for stirring.

[0041] When stirring the slurry, the second driving mechanism 5 works to adjust each sector filter plate 4 to an inclined state. The sector filter plate 4 in the inclined state has a large contact area with the slurry. When the first driving mechanism 3 drives the shaft rod 11 to rotate, it drives the sector filter plate 4 to stir the slurry at the bottom of the coating tank 1, avoiding the precipitation of dissolved substances, improving the stirring effect, the uniformity during subsequent coating and the coating quality. At the same time, the sector filter plate 4 and the filter holes B41 thereon can intercept and eliminate the bubbles generated during the stirring process. In addition, through the work of the second driving mechanism 5, each sector filter plate 4 can be driven to rotate by different angles, so that the inclination degree of the sector filter plate 4 can be adjusted to stir the slurry to different degrees. When discharging the material after stirring, the second driving mechanism 5 works to adjust each sector filter plate 4 to a horizontal state, and each sector filter plate 4 closes to form a whole circular filter plate, which can intercept and eliminate the bubbles in the slurry in advance, further reducing the bubbles in the slurry. In addition, when discharging the material, the first driving mechanism 3 works to drive the shaft rod 11 to rotate and drive the whole circular filter plate to rotate. On the one hand, it provides a stirring effect to avoid dissolution and precipitation. On the other hand, the moving whole circular filter plate has a better effect on intercepting and eliminating bubbles.

[0042] Specifically, the second driving mechanism 5 includes an electric push cylinder A51, a mounting plate 52, racks 53, rotating shafts 54 and gears 55, the number of which matches the number of sector filter plates 4. A cavity channel 113 is jointly provided in the connecting seat 111 and the mounting seat 112. The electric push cylinder A51 is vertically fixed in the cavity channel 113. The mounting plate 52 is fixed on the end of the telescopic rod of the electric push cylinder A51 and slidably fits on the inner wall of the cavity channel 113. Each rack 53 is arranged in a circular array below the mounting plate 52 and all extend vertically. By the telescopic work of the electric push cylinder A51, the mounting plate 52 and each rack 53 can be driven to lift synchronously, providing drive for the lifting adjustment of each rack 53.

[0043] Each rotating shaft 54 is arranged in a circular array around the mounting seat 112 and all penetrate and are rotatably installed on the side wall of the mounting seat 112. The end parts of each rotating shaft 54 located outside the mounting seat 112 are respectively fixed to the corresponding sector filter plate 4. Gears 55 are fixedly sleeved on the end parts of each rotating shaft 54 located in the cavity channel 113. Each rack 53 meshes with the corresponding gear 55. When the rack 53 is adjusted for lifting, it can mesh and drive the gear 55 and drive the rotating shaft 54 to rotate, thereby driving the sector filter plate 4 to rotate, providing drive for the swing adjustment of the sector filter plate 4.

[0044] Specifically, the three-way discharge pipe 2 is composed of a feed pipe 21, a discharge pipe A 22, and a discharge pipe B 23. The feed pipe 21 is vertically connected to the bottom of the coating tank 1. The discharge pipe B 23 is vertically connected to the bottom end of the feed pipe 21. The discharge pipe A 22 is connected to the side of the feed pipe 21. The sizing pipe 13 is connected to the end of the discharge pipe A 22. The circular filter plate 24 is fixedly installed in the discharge pipe A 22. During discharging, the slurry in the coating tank 1 is vertically discharged into the feed pipe 21, passes through the circular filter plate 24 and enters the discharge pipe A 22, and finally is conveyed to the downstream process through the sizing pipe 13. The large-particle impurities intercepted by the circular filter plate 24 can be discharged through the discharge pipe B 23, avoiding excessive accumulation of impurities in the three-way discharge pipe 2 and causing blockage.

[0045] A first ring body 91 and a second ring body 92 are respectively fixedly matched on the inner wall of the feed pipe 21 from top to bottom. A sealing plate 93 is arranged between the first ring body 91 and the second ring body 92 in the feed pipe 21. A spring B 94 extending vertically is fixed on the upper surface of the second ring body 92. The sealing plate 93 is fixed on the top end of the spring B 94. The outer diameter of the sealing plate 93 is smaller than the inner diameter of the feed pipe 21, so that there is a space for the slurry to pass between the outer peripheral wall of the sealing plate 93 and the inner wall of the feed pipe 21. The sealing plate 93 is in contact and cooperation with the lower surface of the first ring body 91.

[0046] A push rod 9 is fixed on the lower surface of the mounting plate 52. The push rod 9 vertically penetrates and extends below the mounting seat 112 and is in contact and cooperation with the upper surface of the sealing plate 93. When the electric push cylinder A 51 pushes the mounting plate 52 down to the limit position, each sector filter plate 4 rotates to the horizontal state to form a whole circular filter plate. At the same time, the bottom end of the push rod 9 pushes the sealing plate 93 downward, so that the sealing plate 93 is separated from the first ring body 91.

[0047] During stirring, the electric push cylinder A 51 is in the retracted state. At this time, the push rod 9 is separated from the upper surface of the sealing plate 93. Under the elastic force of the spring B 94, the sealing plate 93 is pushed to closely fit with the lower surface of the first ring body 91, achieving a sealing effect and avoiding the slurry from flowing into the discharge pipe A 22 and being discharged before being well stirred. In addition, a sealing ring 931 made of rubber material is also fixed on the sealing plate 93. The sealing ring 931 has elasticity. When the sealing plate 93 is in contact and sealed with the lower surface of the first ring body 91, the sealing ring 931 is squeezed between the sealing plate 93 and the first ring body 91, achieving a good sealing effect.

[0048] During discharging, the electric push cylinder A51 extends to drive the mounting plate 52 to descend to the limit position. At this time, each sector filter plate 4 is driven to rotate to the horizontal position to form a complete circular filter plate. Meanwhile, the mounting plate 52 pushes the push rod 9 downward. The push rod 9 pushes the sealing plate 93 to move downward and separate from the first ring body 91. At this time, the spring B94 stores elastic energy. There is a gap between the lower surface of the first ring body 91 and the upper surface of the sealing plate 93. The slurry can flow into the discharge pipe A22 successively through the inner hole of the first ring body 91, the space between the inner wall of the feed pipe 21 and the outer peripheral wall of the second ring body 92, and the inner hole of the second ring body 92, and is finally transported to the downstream process through the sizing pipe 13. After discharging is completed and the electric push cylinder A51 retracts and resets, it drives the push rod 9 to move upward and separate from the sealing plate 93. The elastic reset of the spring B94 is used to push the sealing plate 93 upward to re-fit and seal with the first ring body 91. The elastic force of the spring B94 is used to realize the automatic reset and sealing of the sealing plate 93.

[0049] It should be noted that through the telescopic operation of the electric push cylinder A51, the push rod 9 is driven by the mounting plate 52 to rise and fall synchronously. The opening and closing of the sealing plate 93 are realized by the contact cooperation between the push rod 9 and the sealing plate 93 and the elastic reset function of the spring B94, achieving a linkage effect. There is no need to use an additional drive source to drive the opening and closing of the sealing plate 93, resulting in low equipment cost investment. In addition, the opening and closing of the sealing plate 93 and the flipping of the sector filter plate 4 are adapted to the timing and state of stirring and discharging, with a reasonable structural layout and a strong linkage effect.

[0050] Specifically, a horizontally extending slot 231 is provided on one side of the discharge pipe B23. A plugging plate 8 for plugging the discharge pipe B23 is slidably inserted in the slot 231. An installation frame 81 is fixed on the outer wall of the discharge pipe B23. An electric push cylinder B82 is horizontally fixed on the installation frame 81. The end of the telescopic rod of the electric push cylinder B82 is fixedly connected to the side of the plugging plate 8. During discharging, the electric push cylinder B82 extends to drive the plugging plate 8 to slide and plug the slot 231 to prevent the slurry from discharging from the discharge pipe B23. After discharging is completed, the electric push cylinder B82 retracts to drive the plugging plate 8 to slide outward, opening the discharge pipe B23, which is beneficial for discharging the large particle impurities filtered out.

[0051] In addition, a vertically extending connecting arm 83 is fixed on the telescopic rod of the electric push cylinder B82. A guide rod 84 is slidably penetrated and installed at the center of the circular filter plate 24. One end of the guide rod 84 slides through to the outside of the feed pipe 21 and is fixed to the connecting arm 83. The other end is fixed with a center seat 85. Mounting plates 86 are evenly distributed on the outer peripheral surface of the center seat 85, forming a cross-shaped structure. There are gaps between adjacent mounting plates 86, which will not affect the flow of the slurry. Pushing needles 87 are evenly distributed on each mounting plate 86. The pushing needles 87 can be inserted into the filter holes A241 one by one. When the electric push cylinder B82 retracts to drive the blocking plate 8 to slide and discharge large-particle impurities, through the connection of the connecting arm 83 and the guide rod 84, the center seat 85, the mounting plates 86 and the pushing needles 87 can be driven to move toward the side close to the electric push cylinder B82. Finally, each pushing needle 87 is inserted into the corresponding filter hole A241, and the large particles drilled into the filter hole A241 can be pushed out, realizing the cleaning of the filter hole A241, avoiding the blockage caused by excessive entry of large particles into the filter hole A241, realizing the cleaning and maintenance of the circular filter plate 24. The movement of the pushing needles 87 depends on the drive of the electric push cylinder B82, realizing a linkage effect, without setting additional drive, reducing the equipment cost investment. When the electric push cylinder B82 extends to push the blocking plate 8 to block the discharge pipe B23, the pushing needles 87 can be synchronously driven to withdraw from the filter holes A241.

[0052] Specifically, a floating sweeping mechanism 6 is provided on the shaft rod 11 near the top inside the coating tank 1. The floating sweeping mechanism 6 includes a square sleeve seat 61, a buoyancy seat 62 and flexible floating strips 63. The square sleeve seat 61 is fixedly sleeved on the shaft rod 11. The buoyancy seat 62 is sleeved on the square sleeve seat 61 and can slide vertically. Stopping seats 611 are fixed at the top and bottom of the square sleeve seat 61, which can limit the buoyancy seat 62 on the square sleeve seat 61. The square sleeve seat 61 with a square cross-section is adapted to the hole cavity with a square cross-section inside the buoyancy seat 62, which not only ensures that the buoyancy seat 62 can slide vertically along the square sleeve seat 61, but also ensures that there is no relative rotation between the square sleeve seat 61 and the buoyancy seat 62. Furthermore, when the square sleeve seat 61 rotates, it can drive the buoyancy seat 62 to rotate. Flexible floating strips 63 are installed on the four side surfaces of the buoyancy seat 62.

[0053] The buoyancy seat 62 and the flexible floating strips 63 are attached to the slurry liquid level, which can change the surface tension of the slurry liquid level and reduce the generation of bubbles during stirring. In addition, the bubbles formed below the liquid level float upward to the liquid level. When the square sleeve seat 61, the buoyancy seat 62 and the flexible floating strips 63 rotate following the shaft rod 11, they can destroy and sweep away the bubbles at the liquid level, further reducing the bubble content in the slurry. Secondly, the buoyancy seat 62 and the flexible floating strips 63 can adaptively lift and lower through buoyancy, with high adaptability.

[0054] The flexible floating strip 63 is composed of a number of buoyancy blocks 631. The buoyancy blocks 631 are arranged linearly, and adjacent buoyancy blocks 631 are hinged through a hinge seat 632, enabling relative rotation between adjacent buoyancy blocks 631. The flexible floating strip 63 formed by sequentially hinging a number of buoyancy blocks 631 has the ability to bend and deform, and can adaptively deform according to the fluctuations of the liquid level, ensuring that the flexible floating strip 63 can effectively fit the liquid surface for defoaming work.

[0055] Specifically, a stirring mechanism 7 is provided between the floating cleaning mechanism 6 and the connecting seat 111 on the shaft rod 11. The stirring mechanism 7 includes a disc seat 71 and stirring rods 72. A number of disc seats 71 are sleeved on the shaft rod 11 at intervals in the vertical direction. Stirring rods 72 are evenly distributed on the outer peripheral walls of the respective disc seats 71. When the first driving mechanism 3 drives the shaft rod 11 to rotate, the stirring rods 72 can be driven to rotate, realizing the stirring of the slurry.

[0056] The lowermost disc seat 71 is fixed to the shaft rod 11, and the remaining disc seats 71 can slide up and down along the shaft rod 11. Spring A73 is sleeved outside the shaft rod 11 between each adjacent pair of disc seats 71. The top end of the spring A73 is fixed to the lower surface of the corresponding upper disc seat 71, and the bottom end is fixed to the upper surface of the corresponding lower disc seat 71. Connecting ropes 74 are evenly distributed on the upper surface of the uppermost disc seat 71. The top ends of the respective connecting ropes 74 are fixed to the lower surface of the buoyancy seat 62. When the amount of slurry put into the coating tank 1 is different, the liquid level height is different. When the buoyancy seat 62 and the flexible floating strip 63 are adjusted in height adaptively by buoyancy, under the connection action of the connecting ropes 74 and the elastic force of the spring A73, the disc seats 71 except the lowermost one can be driven to lift and lower synchronously, so as to adaptively adjust the stirring coverage range of the stirring rods 72 in the vertical direction according to the amount of slurry in the coating tank 1, improving the stirring effect of the slurry.

[0057] Specifically, the mounting seat 112 is an octahedron, and the number of fan-shaped filter plates 4 arranged is four. The rotating shaft 54 is perpendicular to the corresponding side of the mounting seat 112. The end of the fan-shaped filter plate 4 away from the rotating shaft 54 is movably attached to the inner wall of the coating tank 1, and the side close to the rotating shaft 54 is movably attached to the corresponding side of the mounting seat 112. When the fan-shaped filter plates 4 are closed to form a whole circular filter plate, it is avoided that air bubbles pass through the gaps between the outer edge wall of the fan-shaped filter plate 4 and the inner wall of the coating tank 1 and the gaps between the inner end of the fan-shaped filter plate 4 and the outer surface of the mounting seat 112.

[0058] Flexible rods A42 are arranged in an array on one side of the fan-shaped filter plate 4, and flexible rods B43 are arranged in an array on the other side. When the fan-shaped filter plates 4 are all rotated to the horizontal state, the flexible rods A42 on the side of the filter holes B41 are distributed at intervals and alternately with the flexible rods B43 on the side of the adjacent filter holes B41, avoiding air bubbles passing through the gaps between adjacent fan-shaped filter plates 4, and further improving the effect of intercepting and eliminating air bubbles.

[0059] Specifically, the first driving mechanism 3 includes a motor frame 31, a driving motor 32, and a coupling 33. The motor frame 31 is fixed to the top of the coating tank 1. The driving motor 32 is fixed above the coating tank 1 through the motor frame 31. The output shaft of the driving motor 32 is fixedly connected in transmission with the top end of the shaft rod 11 through the coupling 33. By operating the driving motor 32, its output shaft drives the shaft rod 11 to rotate through the coupling 33, providing driving force for the stirring action.

[0060] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

Claims

1. A coating liquid stirring and treating device with defoaming and filtration, characterized in that: It includes a coating tank, a shaft rod, a feed inlet and a sizing pipe; The bottom of the coating tank is connected with a three-way discharge pipe. The feed inlet is arranged at the top of the side of the coating tank. The sizing pipe is communicated with one of the discharge ends of the three-way discharge pipe. A circular filter plate is arranged in the three-way discharge pipe upstream of the sizing pipe, and filter holes A are uniformly distributed on the circular filter plate; The shaft rod is rotatably installed in the coating tank, and the top end extends through to the upper part of the coating tank, and the bottom end is close to the inner bottom of the coating tank. A first driving mechanism for driving the shaft rod to rotate is arranged at the top of the coating tank; An installation seat is fixed to the bottom end of the shaft rod through a connection seat. A plurality of sector filter plates are annularly arranged around its axis on the outer surface of the installation seat, and filter holes B are respectively and uniformly distributed on each sector filter plate; A second driving mechanism for driving each sector filter plate to rotate synchronously is jointly arranged in the connection seat and the installation seat. When each sector filter plate rotates and adjusts to the horizontal position, a whole circular filter plate adapted to the inner diameter size of the coating tank is formed; The second driving mechanism includes an electric push cylinder A, an installation disc, and racks, rotating shafts and gears whose quantities match the quantity of the sector filter plates; A cavity channel is jointly arranged in the connection seat and the installation seat, and the electric push cylinder A is vertically fixed in the cavity channel; The installation disc is fixed to the end of the telescopic rod of the electric push cylinder A and is slidably attached to the inner wall of the cavity channel; Each rotating shaft is annularly arranged around the installation seat and is rotatably installed through the side wall of the installation seat. The end parts of each rotating shaft located outside the installation seat are respectively fixed to the corresponding sector filter plates, and gears are fixedly sleeved on the end parts of each rotating shaft located in the cavity channel; Each rack is annularly arranged below the installation disc and is respectively meshed with the corresponding gear; The three-way discharge pipe is composed of a feed pipe, a discharge pipe A and a discharge pipe B. The feed pipe is vertically communicated with the bottom of the coating tank. The discharge pipe B is vertically communicated with the bottom end of the feed pipe. The discharge pipe A is connected to the side of the feed pipe; The sizing pipe is connected to the end of the discharge pipe A, and the circular filter plate is fixedly installed in the discharge pipe A; A first ring body and a second ring body are respectively and fixedly matched on the inner wall of the feed pipe from top to bottom; A sealing plate is arranged between the first ring body and the second ring body in the feed pipe. A vertically extending spring B is fixed on the upper surface of the second ring body, and the sealing plate is fixed to the top end of the spring B; The outer diameter of the sealing plate is smaller than the inner diameter of the feed pipe, and the sealing plate is in interference fit with the lower surface of the first ring body; A push rod is fixed to the lower surface of the installation disc, and the push rod vertically extends through to the lower part of the installation seat and is in interference fit with the upper surface of the sealing plate; When the electric push cylinder A pushes the installation disc down to the limit position, each sector filter plate rotates to the horizontal state to form a whole circular filter plate. At the same time, the bottom end of the push rod pushes the sealing plate downward, so that the sealing plate is separated from the first ring body; On one side of the discharge pipe B, there is a horizontally extending slot, and a sealing plate for sealing the discharge pipe B is slidably inserted in the slot; An installation frame is fixed on the outer wall of the discharge pipe B, and an electric push cylinder B is horizontally fixed on the installation frame. The end of the telescopic rod of the electric push cylinder B is fixedly connected to the side of the sealing plate; A vertically extending connecting arm is fixed on the telescopic rod of the electric push cylinder B; A guide rod is slidably penetrated and installed at the center of the circular filter plate. One end of the guide rod slides through to the outside of the feed pipe and is fixed to the connecting arm, and the other end is fixed with a center seat; Mounting plates are evenly distributed on the outer peripheral surface of the center seat, and push needles are evenly distributed on each mounting plate. The push needles can be inserted into the filter holes A one by one.

2. The coating liquid stirring and treating device with defoaming and filtering according to claim 1, characterized in that: A floating sweeping mechanism is provided on the shaft rod near the inner top of the coating tank. The floating sweeping mechanism includes a square sleeve seat, a buoyancy seat and flexible floating strips; The square sleeve seat is fixedly sleeved on the shaft rod. The buoyancy seat is sleeved on the square sleeve seat and can slide vertically. Flexible floating strips are installed on the four side surfaces of the buoyancy seat; The flexible floating strip is composed of a plurality of buoyancy blocks, and adjacent two buoyancy blocks are hinged through a hinge seat.

3. The coating liquid stirring and treating device with defoaming and filtering according to claim 2, characterized in that: A stirring mechanism is provided on the shaft rod between the floating sweeping mechanism and the connecting seat; The stirring mechanism includes a disc seat and stirring rods; A plurality of the disc seats are spacedly sleeved on the shaft rod in the vertical direction, and the stirring rods are evenly distributed on the outer peripheral walls of the disc seats respectively; The lowermost disc seat is fixed to the shaft rod, and the remaining disc seats can slide up and down along the shaft rod; Spring A is sleeved outside the shaft rod between every two adjacent disc seats. The top end of Spring A is fixed to the lower surface of the corresponding disc seat above, and the bottom end is fixed to the upper surface of the corresponding disc seat below; Connecting ropes are evenly distributed on the upper surface of the uppermost disc seat, and the top ends of the connecting ropes are all fixed to the lower surface of the buoyancy seat.

4. The coating liquid stirring and treating device with defoaming and filtering according to claim 1, characterized in that: The installation seat is an octahedron, and the number of the fan-shaped filter plates arranged is four; The rotating shaft is perpendicular to the corresponding side of the installation seat; One end of the fan-shaped filter plate away from the rotating shaft is movably attached to the inner wall of the coating tank, and the side close to the rotating shaft is movably attached to the corresponding side of the installation seat; Flexible rods A are arranged in an array on one side of the fan-shaped filter plate, and flexible rods B are arranged in an array on the other side. When each fan-shaped filter plate rotates to the horizontal state, the flexible rods A on the side of the filter hole B are spaced and staggered with the flexible rods B on the side of the adjacent filter hole B.

5. The coating liquid stirring and treating device with defoaming and filtering according to claim 1, characterized in that: The first driving mechanism includes a motor frame, a driving motor and a coupling; The motor frame is fixed on the top of the coating tank, and the driving motor is fixed above the coating tank through the motor frame; The output shaft of the driving motor is fixedly connected in transmission with the top end of the shaft rod through the coupling.

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