Wall scraping type coating mixing, dispersing and filtering device

Abstract

The utility model provides a wall scraping type coating mixing, dispersing and filtering device, which relates to the technical field of coating mixing equipment and comprises a base, and an outer cylinder is fixedly arranged on the base. The filter screen cylinder is coaxially arranged in the outer cylinder, and the diameter of the filter screen cylinder is smaller than that of the outer cylinder, so that an annular cavity is formed between the filter screen cylinder and the outer cylinder; comprising a feeding pipe and a discharging pipe, the feeding pipe is communicated with the annular cavity, and the discharging pipe is communicated with an inner cavity of the filter screen cylinder; the wall scraping assembly is located on the outer side of the filter screen cylinder and can rotate relative to the filter screen cylinder. The filter has the beneficial effects that filter residues attached to the outer wall of the filter screen can be continuously and automatically scraped in the filtering process, the filter holes are effectively prevented from being blocked, the continuous and stable operation of the filtering operation is ensured, shutdown cleaning is not needed, and the production efficiency and the equipment utilization rate are favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coating mixing equipment technical field especially a scrape wall formula coating mixing dispersion filter device. BACKGROUND

[0002] At present, in the fine chemical field such as coating, ink, adhesive, efficient mixing, dispersion, emulsification and filtration of liquid-solid mixture are the core production technology. The traditional coating production equipment, especially for the treatment of medium-high viscosity slurry material, usually relies on the stirring tank or dispersion kettle integrated with high-speed dispersion disc. The specific working principle is to use the dispersion disc to rotate at high speed under the drive of the motor to produce strong mechanical shearing force, hydraulic impact and turbulent effect on the material in the tank, so as to realize the wetting and crushing of solid powder, the depolymerization and dispersion of agglomerated particles, and the mixing and emulsification of different liquid phases. This equipment is the key device to complete the material refinement, homogenization and achieve the specific particle size distribution requirement.

[0003] In order to obtain pure and impurity-free final product after dispersion, the material needs to be filtered through the filter screen to remove the agglomerated particles that are not completely dispersed or the mechanical impurities introduced in the production process. However, when dealing with viscous materials, the filter screen surface is easily and quickly blocked by viscous materials or large particles, resulting in a sharp decline in filtration efficiency, an increase in system back pressure, and even affecting the continuous operation of the previous mixing and dispersion operation. But the current industry generally uses the solution of stopping processing, that is, interrupting the whole production process, and cleaning the filter screen by manual disassembly or using tools. But this method not only is complicated, time-consuming and labor-intensive, but also greatly reduces the equipment utilization and production efficiency, increases the labor intensity of workers, and may also introduce secondary pollution or damage the filter screen in the frequent disassembly process, affecting the product quality and the stability of the production finished product.

[0004] Therefore, it has become an urgent task for the industry to disclose a new technical solution that can realize continuous production and ensure smooth and efficient process to solve the problems caused by traditional shutdown cleaning. UTILITY MODEL CONTENT

[0005] The utility model overcomes the shortcomings in the prior art and provides a scrape wall formula coating mixing dispersion filter device that can continuously and automatically scrape off the filter residue attached to the outer wall of the filter screen during the filtration process, effectively prevent the filter hole from being blocked, ensure the continuous and stable operation of the filtration operation, do not need to stop cleaning, and help to improve the production efficiency and equipment utilization.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] A scraping-type coating mixing, dispersing, and filtering device includes a base, an inlet pipe, and an outlet pipe. An outer cylinder is fixedly mounted on the base. The device also includes a filter screen cylinder coaxially mounted inside the outer cylinder. The diameter of the filter screen cylinder is smaller than the diameter of the outer cylinder, so that an annular chamber is formed between the filter screen cylinder and the outer cylinder.

[0008] The feed pipe is connected to the annular chamber, and the discharge pipe is connected to the inner cavity of the filter screen cylinder;

[0009] It also includes a wall scraping assembly, which is located outside the filter cylinder and can rotate relative to the filter cylinder; the wall scraping assembly includes an upper fixed frame, a lower fixed frame, and at least one mounting shaft that is vertically arranged and can rotate about its own axis, the upper and lower ends of the mounting shaft being rotatably connected to the upper fixed frame and the lower fixed frame, respectively; a scraper is provided on the mounting shaft, and the blade of the scraper contacts the outer wall of the filter cylinder;

[0010] The top of the outer cylinder is covered with an end cap assembly that can be opened and closed. The end cap assembly is provided with a drive mechanism. The output end of the drive mechanism is connected to the wall scraping assembly for driving the wall scraping assembly to rotate so that the scraper scrapes off the filter residue on the outer wall of the filter cylinder.

[0011] An angle locking structure is provided between the mounting shaft and the upper fixing frame and / or the lower fixing frame. By rotating and locking the mounting shaft, the contact pressure between the scraper and the outer wall of the filter cylinder can be adjusted.

[0012] Furthermore, the angle locking structure includes a first positioning block disposed on the upper fixing frame, and the upper end of the mounting shaft passes through the first positioning block and is connected by a key;

[0013] The first positioning block has an arc-shaped adjustment hole, and the upper fixing frame has a corresponding first threaded hole. The first fastener passes through the arc-shaped adjustment hole and is screwed into the first threaded hole to lock the first positioning block on the upper fixing frame.

[0014] Furthermore, the top end face of the mounting shaft is provided with an adjustment groove; the upper end of the mounting shaft is provided with a connecting member for transmission connection with the output end of the drive mechanism.

[0015] Furthermore, a second positioning block is provided on the lower fixing frame, and the lower end of the mounting shaft is inserted into the second positioning block and radially locked by a second fastener arranged laterally.

[0016] Furthermore, an inspection sleeve is provided on the side wall of the outer cylinder corresponding to the position of the second fastener.

[0017] Furthermore, the scraper is provided with an elongated hole, the mounting shaft is provided with a second threaded hole, and a third fastener passes through the elongated hole and is screwed into the second threaded hole to adjust the feed amount of the scraper in the radial direction.

[0018] Furthermore, it also includes a lifting mechanism connected between the outer cylinder and the end cap assembly, for driving the end cap assembly to rise and fall;

[0019] The lifting mechanism includes a fixed rod that is vertically fixed to the outer cylinder;

[0020] A lifting sleeve is sleeved on the outside of the fixed rod and can slide along its axial direction. The lifting sleeve is connected to the connecting plate, and the connecting plate is fixedly connected to the end cap assembly.

[0021] The top of the lifting sleeve is connected to a lead screw nut; it also includes a lead screw, the upper end of which is connected to a handwheel, and the lower end of which is rotatably connected to the top of the fixed rod via a bearing, and the lead screw and the lead screw nut are threadedly engaged;

[0022] Rotating the handwheel drives the lead screw to rotate, which in turn causes the lead screw nut and the lifting sleeve to rise and fall along the fixed rod, thereby causing the end cap assembly to rise and fall.

[0023] Furthermore, it also includes a protective sleeve, which is fitted onto the lead screw, with its upper end connected to the handwheel and its lower end connected to the lead screw nut.

[0024] Furthermore, the filter cylinder is provided with a plurality of pull rods extending along its axial direction inside, and a plurality of support rings for supporting the inner wall of the filter cylinder are sleeved on the pull rods; it also includes a pressure plate covering the filter cylinder, the lower end of the pull rod is connected to the bottom of the filter cylinder, and the upper end of the pull rod is connected to the pressure plate;

[0025] The drive mechanism includes a servo motor and a reducer. The servo motor is connected to the input end of the reducer, and the output end of the reducer is connected to a downwardly extending drive shaft. A sleeve joint is fixed to the lower end of the drive shaft. A drive plate is connected to the sleeve joint. The rotation plane of the drive plate intersects with the connecting piece, so that the rotation of the drive plate will push against the connecting piece and drive the scraping component to rotate.

[0026] The pressure plate has an upwardly protruding positioning head at its center; the positioning head corresponds to the sleeve joint; when the end cap assembly is closed, the sleeve joint is fitted onto the positioning head to form a positioning.

[0027] Furthermore, the base is provided with a drain port that communicates with the annular chamber, the drain port is connected to a drain pipe, and the drain pipe is provided with a pneumatic valve.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] This invention provides a scraper-type coating mixing and dispersing filtration device. By installing a rotating scraper assembly driven by a drive mechanism on the outside of the filter screen cylinder, it can continuously and automatically scrape off filter residue adhering to the outer wall of the filter screen during the filtration process, effectively preventing filter pore clogging and ensuring continuous and stable operation of the filtration process without the need for downtime cleaning, thus improving production efficiency and equipment utilization. Furthermore, addressing the wear problem of the scraper blade after long-term use, the angular deviation caused by wear can be compensated by rotating the adjusting mounting shaft. Simultaneously, the scraper itself, through an elongated hole and a third fastener, allows for fine adjustment of the radial feed amount. The combined effect of these two adjustment methods ensures that the scraper blade maintains a good scraping effect on the filter screen surface of the filter cylinder. The device features an ingenious structure and convenient operation. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is an overall diagram of the mixing and dispersing filtration device;

[0032] Figure 2 This is a front view of a mixing and dispersing filtration device;

[0033] Figure 3 This is a side view of a mixing and dispersing filtration device;

[0034] Figure 4 This is a cross-sectional view of a mixing and dispersing filtration device;

[0035] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0036] Figure 6 This is a diagram of the internal structure of the mixing and dispersing filter device after the outer cylinder has been removed.

[0037] Figure 7 This is a sectional view of the lifting mechanism;

[0038] Figure 8 This is a structural diagram of the end cap assembly, servo motor, and reducer.

[0039] Figure 9 This is a structural diagram of the base;

[0040] Figure 10 This is a schematic diagram showing the outer cylinder and the filter screen cylinder in a separated state;

[0041] Figure 11 yes Figure 10 Enlarged view of point B in the middle;

[0042] Figure 12 This is a structural schematic diagram of the wall scraping assembly;

[0043] Figure 13 yes Figure 12 Enlarged view of point C in the middle;

[0044] Figure 14 This is a schematic diagram showing the scraper separated from the mounting shaft;

[0045] Figure 15 This is a schematic diagram of the filter cylinder.

[0046] Figure 16 This is a cross-sectional view of the filter cylinder;

[0047] Figure 17 This is a schematic diagram showing the filter cylinder separated from the pressure plate.

[0048] In the diagram: 1. Base; 2. Outer cylinder; 3. Annular chamber; 4. Feed pipe; 5. Discharge pipe; 6. Upper fixing frame; 601. First threaded hole; 7. Lower fixing frame; 8. Mounting shaft; 801. Adjusting groove; 802. Second threaded hole; 9. Scraper; 901. Oblong hole; 10. End cap assembly; 11. First positioning block; 1101. Arc-shaped adjusting hole; 12. Key; 13. First fastener; 14. Connector; 15. Second positioning block; 16. Second fastener; 17. Inspection sleeve; 18. Third fastener Firmware; 19. Lifting mechanism; 1901. Fixed rod; 1902. Lifting sleeve; 1903. Connecting plate; 1904. Screw nut; 1905. Screw; 1906. Handwheel; 1907. Bearing; 1908. Protective sleeve; 20. Pull rod; 21. Support ring; 22. Servo motor; 23. Reducer; 24. Pressure plate; 25. Drive shaft; 26. Socket joint; 27. Drive plate; 28. Positioning head; 29. ​​Drain outlet; 30. Drain pipe; 31. Pneumatic valve; 32. Filter screen cylinder. Detailed Implementation

[0049] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0050] like Figures 1 to 17 As shown, this utility model claims protection for a scraper-type paint mixing and dispersing filter device, which can effectively filter large particulate impurities in paint and continuously remove sludge from the outer wall of the filter screen through an adjustable scraper component to prevent clogging and ensure filtration efficiency and continuous operation capability.

[0051] Specifically, the device includes a base 1, on which an upright outer cylinder 2 is fixedly mounted. Inside the outer cylinder 2, a filter screen cylinder 32 is coaxially arranged. The diameter of the filter screen cylinder 32 is designed to be smaller than the diameter of the outer cylinder 2, thereby forming an annular chamber 3 between the two.

[0052] It also includes an inlet pipe 4 and an outlet pipe 5. The inlet pipe 4 is connected to the outer cylinder 2, and the outlet pipe 5 is connected to the base 1. The inlet pipe 4 is connected to the aforementioned annular chamber 3, while the outlet pipe 5 is connected to the inner cavity of the filter cylinder 32. The paint mixture to be filtered is pumped into the annular chamber 3 through the inlet pipe 4 and passes through the mesh wall of the filter cylinder 32 under pressure. Qualified fine particles of paint enter the inner cavity of the filter cylinder 32 and are finally discharged from the outlet pipe 5. Large particles of impurities that are intercepted remain on the outer wall of the filter cylinder 32 inside the annular chamber 3.

[0053] To continuously clean the filter residue adhering to the outer wall of the filter cylinder 32, this device is equipped with a wall scraping assembly. The wall scraping assembly is located within the annular chamber 3, i.e., on the outside of the filter cylinder 32, and is rotatable relative to the filter cylinder 32. The wall scraping assembly includes an upper fixing frame 6, a lower fixing frame 7, and at least one vertically arranged mounting shaft 8. The upper fixing frame 6 and the lower fixing frame 7 are rotatably mounted on the outside of the filter cylinder 32. The upper and lower ends of the mounting shaft 8 are respectively connected to the upper fixing frame 6 and the lower fixing frame 7 through shaft holes, allowing the mounting shaft 8 to rotate around its own axis. At least one scraper 9 is axially fixedly mounted on each mounting shaft 8. The cutting edge of the scraper 9 remains in contact with the outer wall of the filter cylinder 32.

[0054] At the top of the outer cylinder 2, an openable cover is provided with an end cap assembly 10. A drive mechanism is mounted on the end cap assembly 10, and the output end of the drive mechanism extends downward and is driven to connect with the wall scraping assembly. When the drive mechanism is activated, it drives the entire wall scraping assembly to rotate around the axis of the filter cylinder 32, thereby causing the scraper 9 on the mounting shaft 8 to scrape the outer wall of the filter cylinder 32 and scrape the accumulated residue to the bottom of the annular chamber 3.

[0055] Considering that the scraper 9 will wear down after long-term use, resulting in reduced contact pressure with the outer wall of the filter cylinder 32 and affecting the scraping effect, this utility model provides the aforementioned angle locking structure between the mounting shaft 8 and the upper fixing frame 6 and / or lower fixing frame 7. By rotating the mounting shaft 8 with a tool, the angle of the scraper 9 relative to the filter cylinder 32 can be finely adjusted, thereby compensating for wear and ensuring that the cutting edge of the scraper 9 is tightly attached to the filter wall again. After adjusting to the appropriate angle, the position of the mounting shaft 8 is fixed by the angle locking structure.

[0056] The angle locking structure specifically involves a first positioning block 11 mounted on the upper fixed frame 6. The upper end of the mounting shaft 8 passes through this first positioning block 11, and the two are connected by a flat key 12, so that rotation of the mounting shaft 8 will cause the first positioning block 11 to rotate. An arc-shaped adjustment hole 1101 is provided on the first positioning block 11. Simultaneously, a first threaded hole 601 is provided on the upper fixed frame 6 at a position corresponding to the arc-shaped adjustment hole 1101. After the angle is adjusted, a first fastener 13 is passed through the arc-shaped adjustment hole 1101 and screwed into the first threaded hole 601, thereby fixing the first positioning block 11, which also simultaneously fixes the mounting shaft 8. When adjustment is needed, the first fastener 13 is first loosened, allowing the mounting shaft 8 and the first positioning block 11 to rotate within a certain angle range around the axis. After rotating the mounting shaft 8 to the desired angle, making the scraper 9 adhere to the filter screen, the first fastener 13 is then tightened, locking the first positioning block 11 and the mounting shaft 8 at the current angle position.

[0057] Furthermore, to facilitate the rotation of the mounting shaft 8, an adjustment groove 801 is machined on the top end face of the mounting shaft 8. This adjustment groove 801 is non-circular, for example, a hexagonal groove, so that a corresponding hexagonal wrench can be used for operation. The hexagonal wrench is inserted into the adjustment groove 801 and rotated, thereby causing the mounting shaft 8 to rotate. The openable and closable configuration of the end cap assembly 10 facilitates the adjustment and rotation of the mounting shaft 8.

[0058] For the lower end of the mounting shaft 8, a second positioning block 15 is provided on the lower fixing bracket 7, and the lower end of the mounting shaft 8 is inserted into the shaft hole of the second positioning block 15. A second fastener 16, which is screwed laterally into the second positioning block 15, is used to press against the lower end of the mounting shaft 8, thereby achieving radial locking. When the upper part needs to be adjusted, the second fastener 16 can be loosened first. After the upper angle is adjusted and locked, the second fastener 16 can be retightened to enhance the stability of the lower end of the mounting shaft 8.

[0059] To facilitate operation of the second fastener 16 located inside the device, a maintenance sleeve 17 is welded to the side wall of the outer cylinder 2, directly opposite the position of the second fastener 16. During normal use, the maintenance sleeve 17 is sealed with a cap, such as a screw cap with an O-ring, to ensure the device's airtightness and prevent paint leakage. When maintenance is required, the cap is opened, and tools can be inserted into the maintenance sleeve 17 to loosen or tighten the second fastener 16.

[0060] The scraper assembly can be manually rotated to align the second fastener 16 corresponding to each mounting shaft 8 with the maintenance sleeve 17.

[0061] In addition to angle compensation via rotating the mounting shaft 8, the scraper 9 itself also has adjustable space during installation. Specifically, an elongated hole 901 extending laterally is provided on the blade of the scraper 9. Correspondingly, a second threaded hole 802 is provided on the mounting shaft 8. A third fastener 18 is screwed into the second threaded hole 802 after passing through the elongated hole 901. Loosening the third fastener 18 allows the scraper 9 to slide within a certain range along the direction of the elongated hole 901, thereby directly fine-tuning the radial distance between the scraper 9 cutting edge and the outer wall of the filter cylinder 32, i.e., the feed rate. After adjustment, tightening the third fastener 18 secures the scraper 9.

[0062] In this embodiment, the first fastener 13, the second fastener 16, and the third fastener 18 mentioned above are all bolts.

[0063] To facilitate maintenance, adjustment, cleaning, or filter replacement of the end cap assembly 10, this device also includes a lifting mechanism 19. The lifting mechanism 19 connects the outer cylinder 2 and the end cap assembly 10, and includes a fixed rod 1901 vertically fixed to the outer cylinder 2. A lifting sleeve 1902, which can slide along the axial direction, is fitted around the fixed rod 1901. The upper part of the lifting sleeve 1902 is fixedly connected to the end cap assembly 10 via a connecting plate 1903. A lead screw nut 1904 is fixedly connected to the top of the lifting sleeve 1902. Correspondingly, a lead screw 1905 is provided, with a handwheel 1906 connected to its upper end, and its lower end rotatably connected to the top of the fixed rod 1901 via a bearing 1907. The lead screw 1905 and the lead screw nut 1904 form a threaded engagement. When the handwheel 1906 is turned clockwise or counterclockwise, the lead screw 1905 rotates, driving the lead screw nut 1904 to move the entire lifting sleeve 1902 and connecting plate 1903 up or down along the fixed rod 1901, thereby realizing the opening and closing of the end cover assembly 10.

[0064] To protect the threaded portion of the lead screw 1905 from contamination by dust, paint splatter, and other contaminants, a protective sleeve 1908 is fitted over the lead screw 1905. The upper end of the protective sleeve 1908 connects to the bottom of the handwheel 1906, and the lower end connects to the top of the lead screw nut 1904, forming a relatively enclosed protective space. The protective sleeve 1908 is made of plastic and has a certain degree of elasticity, allowing it to expand and contract along its length to accommodate the distance between the handwheel 1906 and the lead screw nut 1904.

[0065] Inside the filter cylinder 32, to enhance its structural strength and prevent deformation under negative pressure or pressure fluctuations, a reinforcing structure is provided. Specifically, multiple tie rods 20 are evenly arranged circumferentially inside the filter cylinder 32. The lower ends of these tie rods 20 are connected to the bottom of the filter cylinder 32, and the upper ends pass through a pressure plate 24 and are locked with nuts. Multiple support rings 21 are also fitted on the tie rods 20. The outer walls of these support rings 21 are in close contact with the inner wall of the filter cylinder 32, thereby providing effective support for the cylinder wall.

[0066] In this embodiment, the drive mechanism includes a servo motor 22 and a reducer 23. The output shaft of the servo motor 22 is connected to the input end of the reducer 23. The output shaft of the reducer 23 extends downward as a drive shaft 25 and is fixed to a socket 26. A drive plate 27 is connected to the socket 26. A connector 14 is also fixed at the upper end of the mounting shaft 8 to form a transmission connection with the output end of the drive mechanism. Specifically, in conjunction with… Figure 4 as well as Figure 5 See, the rotation plane of the drive plate 27 intersects with the connector 14 at the upper end of the aforementioned mounting shaft 8. That is, the connector 14 protrudes upward from the horizontal plane of the drive plate 27. Thus, when the drive shaft 25 drives the drive plate 27 to rotate, the drive plate 27 will push against the connector 14, thereby driving the entire scraping assembly to rotate continuously.

[0067] Since the end cap assembly 10 drives the drive plate 27 to rise and fall when it is raised, the drive plate 27 and the connector 14 cannot be fixedly connected; the two are set independently and have a pushing relationship, that is, the drive plate 27 rotates to push the connector 14.

[0068] To achieve automatic alignment and stable transmission between the drive shaft 25 and the scraper assembly when the end cap assembly 10 is closed, a positioning head 28 is provided with an upward protrusion at the center of the pressure plate 24. The axis of the positioning head 28 coincides with the axis of the filter screen cylinder 32. When the end cap assembly 10 is lowered to the working position by the lifting mechanism 19, the sleeve 26 at the lower end of the drive shaft 25 is precisely fitted downward onto the positioning head 28. The sleeve 26 and the positioning head 28 are either clearance-fitted or rotatably assembled via bearings. This not only serves to center and position the components, ensuring the correct meshing position of the drive plate 27 and the connecting piece 14, but also provides partial radial support for the scraper assembly, making the operation smoother.

[0069] A drain port 29 is provided on the base 1, directly opposite the bottom of the annular chamber 3. The drain port 29 is connected to a drain pipe 30 via a flange or thread. A pneumatic valve 31 is installed on the drain pipe 30. When it is necessary to clean the filter residue deposited in the annular chamber 3, the feed can be closed and the pneumatic valve 31 can be opened to discharge the residue from the drain pipe 30.

[0070] The working principle of this utility model is as follows: During operation, the coating enters the annular chamber 3 through the feed pipe 4, passes through the filter screen cylinder 32 under pressure, and the filtrate enters the inner cavity and is discharged from the discharge pipe 5. Simultaneously, the drive mechanism is activated, and through the cooperation of the drive plate 27 and the connecting piece 14, the scraping assembly rotates. The scraper 9 continuously scrapes off the filter residue adhering to the outer wall of the filter screen cylinder 32, preventing filter pore blockage and excessive pressure. The scraped residue settles at the bottom of the annular chamber 3 and can be periodically discharged from the drain port 29. When the scraper 9 wears down, the operator can loosen the second fastener 16 through the maintenance sleeve 17, and then use a tool to rotate the mounting shaft 8 through the adjustment groove 801. Alternatively, the operator can adjust the elongated hole 901 on the scraper 9 to make the scraper 9 re-adhere to the filter screen, and then tighten all fasteners to restore the best scraping effect and extend its service life.

[0071] This invention provides a scraper-type coating mixing and dispersing filtration device. By installing a rotating scraper assembly driven by a drive mechanism on the outside of the filter cylinder 32, it can continuously and automatically scrape away filter residue adhering to the outer wall of the filter screen during the filtration process, effectively preventing filter pore blockage and ensuring continuous and stable operation of the filtration process without the need for downtime cleaning, thus improving production efficiency and equipment utilization. Furthermore, to address the wear problem of the scraper 9 after long-term use, the angular deviation caused by wear can be compensated by rotating and adjusting the mounting shaft 8. Simultaneously, the scraper 9 itself, through the elongated hole 901 and the third fastener 18, allows for fine adjustment of the radial feed amount. The combined effect of these two adjustment methods ensures that the cutting edge of the scraper 9 maintains a good scraping effect on the filter screen surface of the filter cylinder 32. The device features an ingenious structure and convenient operation.

[0072] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A scraped-wall type coating mixing, dispersing, and filtering device, characterized in that, It includes a base (1), a feed pipe (4) and a discharge pipe (5), and an outer cylinder (2) is fixedly installed on the base (1); it also includes a filter screen cylinder (32) coaxially installed inside the outer cylinder (2), the diameter of the filter screen cylinder (32) is smaller than the diameter of the outer cylinder (2) so that an annular chamber (3) is formed between the filter screen cylinder (32) and the outer cylinder (2); The feed pipe (4) is connected to the annular chamber (3), and the discharge pipe (5) is connected to the inner cavity of the filter cylinder (32); It also includes a wall scraping assembly, which is located outside the filter cylinder (32) and can rotate relative to the filter cylinder (32); the wall scraping assembly includes an upper fixing frame (6), a lower fixing frame (7) and at least one mounting shaft (8) that is vertically arranged and can rotate around its own axis, the upper and lower ends of the mounting shaft (8) being rotatably connected to the upper fixing frame (6) and the lower fixing frame (7) respectively; a scraper (9) is provided on the mounting shaft (8), and the blade of the scraper (9) contacts the outer wall of the filter cylinder (32); The top of the outer cylinder (2) is covered with an end cap assembly (10) that can be opened and closed. The end cap assembly (10) is provided with a drive mechanism. The output end of the drive mechanism is connected to the wall scraping assembly for driving the wall scraping assembly to rotate so that the scraper (9) scrapes off the filter residue on the outer wall of the filter screen cylinder (32). An angle locking structure is provided between the mounting shaft (8) and the upper fixing frame (6) and / or the lower fixing frame (7). By rotating and locking the mounting shaft (8), the contact pressure between the scraper (9) and the outer wall of the filter cylinder (32) can be adjusted.

2. The scraped-wall type coating mixing, dispersing, and filtering device according to claim 1, characterized in that, The angle locking structure includes a first positioning block (11) disposed on the upper fixing frame (6), and the upper end of the mounting shaft (8) passes through the first positioning block (11) and is connected by a key (12); The first positioning block (11) is provided with an arc-shaped adjustment hole (1101), and the upper fixing frame (6) is provided with a corresponding first threaded hole (601). The first fastener (13) passes through the arc-shaped adjustment hole (1101) and is screwed into the first threaded hole (601) to lock the first positioning block (11) on the upper fixing frame (6).

3. The scraper-type coating mixing, dispersing, and filtering device according to claim 2, characterized in that, The top end face of the mounting shaft (8) is provided with an adjustment groove (801); the upper end of the mounting shaft (8) is provided with a connector (14) for transmission connection with the output end of the drive mechanism.

4. The scraper-type coating mixing, dispersing, and filtering device according to claim 1, characterized in that, The lower fixing frame (7) is provided with a second positioning block (15), the lower end of the mounting shaft (8) is inserted into the second positioning block (15), and is radially locked by a second fastener (16) arranged laterally.

5. The scraper-type coating mixing, dispersing, and filtering device according to claim 4, characterized in that, The outer cylinder (2) has an inspection sleeve (17) provided on its side wall at the position corresponding to the second fastener (16).

6. The scraper-type coating mixing, dispersing, and filtering device according to claim 1, characterized in that, The scraper (9) is provided with an elongated hole (901), and the mounting shaft (8) is provided with a second threaded hole (802). The third fastener (18) passes through the elongated hole (901) and is screwed into the second threaded hole (802) to adjust the feed amount of the scraper (9) in the radial direction.

7. The scraper-type coating mixing, dispersing, and filtering device according to claim 1, characterized in that, It also includes a lifting mechanism (19), which is connected between the outer cylinder (2) and the end cap assembly (10) for driving the end cap assembly (10) to lift. The lifting mechanism (19) includes a fixed rod (1901) that is vertically fixed on the outer cylinder (2); A lifting sleeve (1902) is sleeved outside the fixed rod (1901) and can slide along its axial direction. The lifting sleeve (1902) is connected to the connecting plate (1903), and the connecting plate (1903) is fixedly connected to the end cap assembly (10). The top of the lifting sleeve (1902) is connected to a lead screw nut (1904); it also includes a lead screw (1905), the upper end of which is connected to a handwheel (1906), and the lower end of which is rotatably connected to the top of the fixed rod (1901) via a bearing (1907). The lead screw (1905) and the lead screw nut (1904) are threaded together. Rotating the handwheel (1906) drives the lead screw (1905) to rotate, which in turn drives the lead screw nut (1904) and the lifting sleeve (1902) to rise and fall along the fixed rod (1901), thereby driving the end cap assembly (10) to rise and fall.

8. The scraper-type coating mixing, dispersing, and filtering device according to claim 7, characterized in that, It also includes a protective sleeve (1908), which is sleeved on the lead screw (1905). The upper end of the protective sleeve (1908) is connected to the handwheel (1906), and the lower end is connected to the lead screw nut (1904).

9. The scraped-wall type coating mixing, dispersing, and filtering device according to claim 3, characterized in that, The filter cylinder (32) is provided with a plurality of pull rods (20) extending along its axial direction inside. The pull rods (20) are fitted with a plurality of support rings (21) for supporting the inner wall of the filter cylinder (32). It also includes a pressure plate (24) covering the filter cylinder (32). The lower end of the pull rod (20) is connected to the bottom of the filter cylinder (32), and the upper end of the pull rod (20) is connected to the pressure plate (24). The drive mechanism includes a servo motor (22) and a reducer (23). The servo motor (22) is connected to the input end of the reducer (23). The output end of the reducer (23) is connected to a downwardly extending drive shaft (25). A sleeve joint (26) is fixed at the lower end of the drive shaft (25). A drive plate (27) is connected to the sleeve joint (26). The rotation plane of the drive plate (27) intersects with the connector (14), so that the rotation of the drive plate (27) will push against the connector (14) and drive the scraper assembly to rotate. The center of the pressure plate (24) is provided with an upwardly protruding positioning head (28); the positioning head (28) corresponds to the sleeve (26); when the end cap assembly (10) is closed, the sleeve (26) is sleeved on the positioning head (28) to form a positioning.

10. The scraper-type coating mixing, dispersing, and filtering device according to claim 1, characterized in that, The base (1) is provided with a drain port (29) that communicates with the annular chamber (3), the drain port (29) is connected to a drain pipe (30), and the drain pipe (30) is provided with a pneumatic valve (31).

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