Flour mill for producing coating additive

Abstract

The invention discloses a flour mill for coating additive production, and belongs to the field of raw material roller milling production, the flour mill comprises a shell, a plate body fixedly connected to one side of the shell, a feed inlet formed in the upper end of the shell, two milling rollers rotationally connected to the interior of the shell, and two driving parts fixedly connected to one side of the plate body, and output shafts of the two driving parts are connected with the two milling rollers correspondingly; two scraping units are symmetrically connected to the interior of the shell; accumulations adhered to the outer surface of the grinding roller can be removed through the scraper, when the movable seat and the scraper move in a reciprocating mode, the position of the scraper can be adjusted, long-time scraping of the fixed position is avoided, abrasion of the scraper is balanced, and therefore the service life of the scraper is prolonged; the scraper can clean non-uniform attachments, especially material accumulation, coating residues or other irregular dirt, formed on the surface of the roller body due to process reasons, and the uniformity of cleaning the surface of the roller body is remarkably improved.

Description

Technical Field

[0001] The invention relates to the field of raw material roller mill production, and more specifically to a grinding mill for producing coating additives. Background Art

[0002] Paint additives, also known as paint auxiliary materials, are auxiliary materials for preparing paints. They can improve paint performance and promote coating film formation. Many paint additives exist in the form of solid particles. During the preparation process of paint additives, the base material needs to be ground using a grinder to form a uniform base material mixture.

[0003] In order to solve the problem of reduced efficiency in base material grinding, the prior art (Chinese utility model patent with announcement number CN213966799U) discloses a grinding mill for the production of coating additives. The device conducts substandard base materials to the inside of a grinding box and performs secondary grinding. Although this can improve work efficiency, under high pressure, violent mechanical collisions and frictions will occur between the coating additive particles, which will convert mechanical energy into heat energy. After the raw materials are subjected to friction heat, environmental heat or heat generated during processing, their solid structure becomes soft and even begins to melt. The softened particles will adhere to the surface of the roller to form irregular deposits, resulting in a rough surface of the roller, affecting the subsequent grinding accuracy and hindering normal grinding. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a grinding mill for producing coating additives.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A mill for producing coating additives, comprising a shell, a plate body fixedly connected to one side of the shell, a feed port opened at the upper end of the shell, two grinding rollers rotatably connected to the inside of the shell, and two driving parts fixedly connected to one side of the plate body and having output shafts respectively connected to the two grinding rollers. The shell is also symmetrically connected to two scraper units, and the scraper units include a movable groove 1 provided on the inner wall of the shell and on one side of the plate body, a avoidance groove 1 connected to the movable groove 1, a movable seat movably inserted in the movable groove 1, a tooth groove provided inside the movable seat, and a scraper fixed inside the movable seat, and two driving components for driving the two movable seats to move in the two movable grooves 1 are connected to the outer surface of one side of the shell; The driving assembly includes two fixed seats symmetrically fixed on the outer surface of one side of the shell, a motor 1 fixed to one side of one of the fixed seats, an incomplete gear rotatably connected between the two fixed seats and located in the tooth groove, and the output shaft of the motor 1 passes through one of the fixed seats and is fixed to one side of the incomplete gear, and the incomplete gear is meshed with the tooth groove.

[0007] Furthermore, two impurity discharge ports 2 are symmetrically provided on both sides of the shell, and two discharge plates 2 are symmetrically fixedly connected inside the shell and are located respectively below the two movable seats, one end of the discharge plate 2 passes through the impurity discharge port 2 and extends outward, a filter plate is also fixedly connected to the inner wall of the shell, and two openings are symmetrically provided on both sides of the shell, and side plates are clamped in the two openings.

[0008] Furthermore, two knife wall scraper assemblies are symmetrically connected inside the shell, and the knife wall scraper assembly includes a support plate with two ends respectively fixed to the inner wall of two avoidance grooves, a plurality of sprockets rotatably connected to the inside of the support plate, a chain belt located inside the support plate and connecting the plurality of sprockets, a plurality of scrapers rotatably connected to one side of the support plate and connected to the plurality of sprockets, and a gear rotatably connected to the other side of the support plate and connected to one of the sprockets, one side of the plurality of scrapers is in contact with one side of the scraper, a bracket is fixed to one side of the movable seat, and a tooth key meshing with the gear is provided on one side of the bracket.

[0009] Furthermore, a plurality of liquid outlets are provided on one side of the support plate, and a plurality of liquid supply interfaces 1 connected to the liquid outlets are provided at the lower end of the support plate.

[0010] Furthermore, two residue cleaning units are symmetrically connected inside the shell, and the residue cleaning unit includes two movable grooves opened on the inner wall of the shell and one side of the plate body, two avoidance grooves connected to the movable grooves, a rotating rod with two ends rotatably connected to the inner walls of the two movable grooves, and a brush roller sleeved on the outside of the rotating rod. Two motors are symmetrically fixed to the outer surface of one side of the shell, and the output shafts of the two motors are both inserted into the movable grooves and fixed to one end of the rotating rod.

[0011] Furthermore, the brush roller is movably sleeved on the outside of the rotating rod, and two groups of inclined grooves connected to the avoidance groove 2 are symmetrically opened inside the plate body. Two groups of inclined top flanges are fixedly connected to one side of the two brush rollers, and the outside of the two rotating rods is also sleeved with an elastic component, the elastic component includes a disk body 1 and a disk body 2 sleeved on the outside of the rotating rod, a spring sleeved on the outside of the rotating rod and connecting the disk body 1 with the disk body 2, a plurality of ball bearings rotatably connected to one side of the disk body 2 and in contact with the other side of the brush roller, and one side of the disk body 1 is fixedly connected to the inner wall of the avoidance groove 2 inside the shell.

[0012] Furthermore, two impurity discharge ports are symmetrically provided on both sides of the shell, and two discharge plates are symmetrically fixedly connected inside the shell and are located respectively below the two brush rollers. One end of the discharge plate extends outward through the impurity discharge port, and suction ports are provided inside the two discharge plates, and the openings of the two suction ports are respectively facing the two grinding rollers. A negative pressure interface connected to the suction port is provided on one side of the extended end of the two discharge plates.

[0013] Furthermore, two hot air blowers and two bristle cleaning parts are symmetrically fixed to the inner wall of the shell, and the air outlet ends of the two hot air blowers are respectively directed toward two brush rollers. The bristle cleaning part includes a horizontal plate fixed at one end to the inner wall of the shell, a plurality of scraping flanges fixed to one side of the horizontal plate, a plurality of nozzles fixed to one side of the horizontal plate, and a liquid supply interface 2 opened on the other side of the horizontal plate and connected to the plurality of nozzles.

[0014] Furthermore, a material guiding and cooling unit is also connected to the interior of the shell, and the material guiding and cooling unit includes two convex extension plates fixedly connected to the inner wall of the shell and located between the feed port and the grinding roller, a triangular material dividing seat fixedly connected to the inner wall of the shell and located between the two convex extension plates, two material mixing inclined plates fixedly connected to the inner wall of the shell and located between the triangular material mixing seat and the grinding roller, and two vibrating parts respectively fixedly connected to the lower ends of the two material mixing inclined plates.

[0015] Furthermore, two exhaust hoods are respectively fixedly connected to the inside of the two convex extension plates, an air storage part and an air compressor are fixedly connected to the outer surface of one side of the shell, and the output end of the air storage part is connected to the input end of the expansion valve, the output end of the expansion valve is connected to the two exhaust hoods through a pipeline, and the output end of the air compressor is connected to the input end of the air storage part.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) This scheme is provided with a residual cleaning unit, which can remove the deposits adhered to the outer surface of the grinding roller through a scraper. The motor drives the rotation of the incomplete gear to drive the movable seat and the scraper to reciprocate, so as to adjust the position of the scraper, avoid scraping at a fixed position for a long time, balance the wear of the scraper, and thus extend the service life of the scraper. Through reciprocating motion, the scraper can clean the uneven attachments, material accumulation or other irregular dirt formed on the surface of the roller due to process reasons, significantly improve the uniformity of the roller surface cleaning, and because the scraper is constantly moving, it can avoid local indentation or damage to the roller caused by long-term pressure at a fixed position, maintain the best contact state between the scraper and the roller, and improve the system stability.

[0017] (2) The present invention is provided with a blade wall scraper assembly. When the movable seat reciprocates in the movable groove 1, the bracket on the movable seat can drive the gear and multiple sprockets to rotate. The rotation of the multiple sprockets can drive the scraper to rotate on one side of the scraper. The scraper can clean the material attached to one side of the scraper to avoid excessive accumulation of material on one side of the scraper, reduce the friction between the scraper surface and the accumulated material, extend the service life of the scraper, reduce damage to the roller surface, maintain an appropriate gap between the scraper and the roller, and ensure that the scraper continues to effectively scrape the material on the surface of the grinding roller. At the same time, when the scraper rotates and tilts, the force it exerts is distributed along an oblique direction, so that the material attached to the scraper can be more effectively pushed downward. Especially when the material layer is thicker or denser, the inclined scraper can provide a larger shear force, which causes the material to detach from the scraper surface and fall more quickly.

[0018] (3) This solution is provided with a residual cleaning unit, which uses a brush roller to clean the grinding roller after being scraped by a scraper. It can remove small areas that the scraper cannot reach and thin layers of attachments that the scraper cannot scrape off. Its soft bristles can clean the grinding roller without damaging its surface, which helps to extend the surface service life of the grinding roller. It can deeply clean the residues, fine particles or thin layers of paint additives that the scraper cannot completely scrape off. The brush roller can achieve reciprocating motion back and forth with the cooperation of the elastic component and the inclined top flange, which can generate dynamic force, avoid the brush from applying force to a fixed point for a long time, and increase the repeated cleaning force of stubborn substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a structural schematic diagram of the first and second discharge plates and the material guiding and cooling unit of the present invention; Figure 4 It is a schematic diagram of the structure of the movable groove 1 and the movable groove 2 on the inner wall of the shell of the present invention; Figure 5 It is a schematic diagram of the structure of the movable groove 1, movable groove 2 and inclined groove on one side of the plate body of the present invention; Figure 6 It is a structural schematic diagram of the scraper unit and the knife wall scraper assembly of the present invention; Figure 7 It is a structural schematic diagram of the liquid outlet and the liquid supply interface 1 of the present invention; Figure 8 It is a schematic diagram of the structure of the sprocket and the chain belt of the present invention; Fig. 9 It is a structural schematic diagram of the inclined top flange of the present invention; Fig.10It is a schematic structural diagram of the elastic component of the present invention; Fig.11 It is a structural schematic diagram of the bristle cleaning part of the present invention; Fig.12 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0020] Description of the numbers in the figure: 1. Shell; 11. Feed inlet; 12. Impurity discharge port 1; 13. Impurity discharge port 2; 14. Side plate; 15. Filter plate; 16. Discharge plate 1; 161. Negative pressure interface; 162. Suction port; 17. Discharge plate 2; 2. Plate body; 3. Drive unit; 4. Grinding roller; 5. Scraper unit; 51. Movable slot 1; 52. Avoidance slot 1; 53. Fixed seat; 54. Movable seat; 55. Motor 1; 56. Incomplete gear; 57. Tooth groove; 58. Scraper; 59. Bracket; 591. Tooth key; 6. Residue cleaning unit; 61. Movable slot 2; 62. Avoidance slot 2; 63. Motor 2; 64. Inclined groove; 65. Rotating rod; 66. Brush roller; 67. 7. Elastic component; 671. Disk body one; 672. Spring; 673. Disk body two; 674. Ball; 68. Sloped top flange; 7. Material guiding and cooling unit; 71. Convex extension plate; 72. Triangular material distribution seat; 73. Material leveling inclined plate; 74. Vibrating part; 75. Exhaust hood; 76. Pipeline; 77. Expansion valve; 78. Air storage part; 79. Air compressor; 8. Knife wall scraper assembly; 81. Support plate; 82. Scraper; 83. Gear; 84. Sprocket; 85. Chain belt; 86. Liquid outlet; 87. Liquid supply interface one; 9. Hot air blower; 10. Brush cleaning part; 101. Horizontal plate; 102. Scraper flange; 103. Nozzle; 104. Liquid supply interface two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 12 A mill for producing coating additives, comprising a housing 1, a plate 2 fixedly connected to one side of the housing 1, a feed port 11 provided at the upper end of the housing 1, two grinding rollers 4 rotatably connected to the inside of the housing 1, and two driving parts 3 fixedly connected to one side of the plate 2 and having output shafts respectively connected to the two grinding rollers 4. Two scraper units 5 are symmetrically connected inside the shell 1, and the scraper unit 5 includes a movable groove 51 opened on the inner wall of the shell 1 and on one side of the plate body 2, a avoidance groove 52 connected to the movable groove 51, a movable seat 54 movably inserted in the movable groove 51, a tooth groove 57 opened inside the movable seat 54, and a scraper 58 fixed inside the movable seat 54, and two driving components for driving the two movable seats 54 to move in the two movable grooves 51 are connected to the outer surface of one side of the shell 1; The driving assembly includes two fixed seats 53 symmetrically fixed on the outer surface of one side of the shell 1, a motor 55 fixed to one side of one of the fixed seats 53, an incomplete gear 56 rotatably connected between the two fixed seats 53 and located in the tooth groove 57, and the output shaft of the motor 55 passes through one of the fixed seats 53 and is fixed to one side of the incomplete gear 56, and the incomplete gear 56 is meshed with the tooth groove 57.

[0023] Two impurity discharge ports 13 are symmetrically provided on both sides of the shell 1, and two discharge plates 17 are symmetrically fixedly connected inside the shell 1 and are located respectively below the two movable seats 54. One end of the discharge plate 17 passes through the impurity discharge port 13 and extends outward. A filter plate 15 is also fixedly connected to the inner wall of the shell 1, and two openings are symmetrically provided on both sides of the shell 1, and side plates 14 are clamped in both of the openings.

[0024] By adopting the above technical solution, the base material enters the shell 1 from the feed port 11 and falls between the two grinding rollers 4. The two driving parts 3 (a power supply unit composed of components such as a motor and a reducer) respectively drive the two grinding rollers 4 to rotate, grind the base material into powder, and the powdered coating additive falls on the filter plate 15. After being filtered by the filter plate 15, it remains at the bottom of the shell 1. When the two grinding rollers 4 rotate, the scraper 58 can scrape off the deposits adhering to the outer surface of the grinding roller 4, and the scraped deposits fall on the discharge plate 2 17. The motor 1 55 drives the incomplete gear 56 to rotate, and the incomplete gear 56 rotates and drives the movable seat 54 to rotate. The movable groove 51 performs a back-and-forth reciprocating motion, and the movable seat 54 drives the scraper 58 to move, so as to adjust the position of the scraper 58 to avoid long-term scraping at a fixed position, balance the wear of the scraper 58, and thus extend the service life of the scraper 58. Through the reciprocating motion, the scraper 58 can clean the uneven attachments, material accumulation or other irregular dirt formed on the surface of the roller due to process reasons, significantly improve the uniformity of the surface cleaning of the grinding roller 4, and because the scraper 58 is constantly moving, it can avoid local indentations or damages to the grinding roller 4 caused by long-term pressure at a fixed position, maintain the best contact state between the scraper 58 and the roller, and improve the stability of the system.

[0025] like Figure 6-Figure 8As shown, two knife wall scraper assemblies 8 are symmetrically connected inside the shell 1, and the knife wall scraper assembly 8 includes a support plate 81 with two ends respectively fixed to the inner walls of two avoidance grooves 52, a plurality of sprockets 84 rotatably connected to the inside of the support plate 81, a chain belt 85 located inside the support plate 81 and connecting the plurality of sprockets 84, a plurality of scrapers 82 rotatably connected to one side of the support plate 81 and connected to the plurality of sprockets 84, and a gear 83 rotatably connected to the other side of the support plate 81 and connected to one of the sprockets 84, one side of the plurality of scrapers 82 is in contact with one side of the scraper 58, a bracket 59 is fixed to one side of the movable seat 54, and a tooth key 591 meshing with the gear 83 is provided on one side of the bracket 59.

[0026] A plurality of liquid outlets 86 are formed on one side of the support plate 81 , and a plurality of liquid supply interfaces 87 connected to the liquid outlets 86 are formed on the lower end of the support plate 81 .

[0027] By adopting the above technical scheme, when the movable seat 54 reciprocates, the scraper 82 on the support plate 81 can scrape off the attachments on one side of the scraper 58, so as to avoid the scraper 58 scraping off the deposits on the outer surface of the grinding roller 4 and leaving the deposits on one side of the scraper 58, so as to avoid excessive accumulation of materials on one side of the scraper 58, reduce the friction between the surface of the scraper 58 and the deposits, extend the service life of the scraper 58, reduce the damage to the surface of the grinding roller 4, maintain the appropriate gap between the scraper 58 and the grinding roller 4, ensure that the scraper 58 continues to effectively scrape the materials on the surface of the grinding roller 4, and at the same time, the movable seat 54 can also drive the bracket 59 to move when it moves, and the tooth key 591 drives the gear 83 to rotate when the bracket 59 moves, and the rotation of the gear 83 drives one of the sprockets 84 to rotate, and the rotation The sprocket 84 drives the other sprockets 84 to rotate through the chain belt 85, and the rotation of multiple sprockets 84 drives multiple scrapers 82 to rotate. The scrapers 82 rotate and tilt, so that the cleaning force applied by the scrapers 82 to one side of the scraper 58 is distributed along an oblique direction, which can more effectively push the materials attached to the scraper 58 downward, especially when the material layer is thicker or denser, the inclined scrapers 82 can provide a larger shear force, causing the material to detach from the surface of the scraper 58 more quickly and fall down, and at the same time, the liquid supply interface 87 can be connected to the liquid supply pipe, and the cleaning liquid enters the liquid outlet 86 from the liquid supply interface 87 and is discharged from the liquid outlet 86. The cleaning liquid is discharged from the liquid outlet 86 and sprayed on one side of the scraper 58, and the scraper 82 is used to better remove the material attached to the scraper 58.

[0028] like Figure 3-Figure 5 , Figure 9-12As shown, two residue cleaning units 6 are symmetrically connected inside the shell 1, and the residue cleaning unit 6 includes a movable groove 2 61 opened on the inner wall of the shell 1 and on one side of the plate body 2, a avoidance groove 2 62 connected to the movable groove 2 61, a rotating rod 65 with two ends rotatably connected to the inner walls of the two movable grooves 2 61 respectively, and a brush roller 66 sleeved on the outside of the rotating rod 65. Two motors 2 63 are symmetrically fixed to the outer surface of one side of the shell 1, and the output shafts of the two motors 2 63 both penetrate into the movable groove 2 61 and are fixed to one end of the rotating rod 65.

[0029] The brush roller 66 is movably sleeved on the outside of the rotating rod 65, and two groups of inclined grooves 64 connected to the avoidance groove 62 are symmetrically opened inside the plate body 2. Two groups of inclined top flanges 68 are fixedly connected to one side of the two brush rollers 66, and the outside of the two rotating rods 65 is also sleeved with an elastic component 67, and the elastic component 67 includes a disk body 1 671 and a disk body 2 673 sleeved on the outside of the rotating rod 65, a spring 672 sleeved on the outside of the rotating rod 65 and connecting the disk body 1 671 with the disk body 2 673, and a plurality of balls 674 rotatably connected to one side of the disk body 2 673 and in contact with the other side of the brush roller 66, and one side of the disk body 1 671 is fixedly connected to the inner wall of the avoidance groove 2 62 inside the shell 1.

[0030] Two impurity discharge ports 12 are symmetrically provided on both sides of the shell 1, and two discharge plates 16 are symmetrically fixedly connected inside the shell 1 and are respectively located below the two brush rollers 66. One end of the discharge plate 16 passes through the impurity discharge port 12 and extends outward. Suction ports 162 are provided inside the two discharge plates 16, and the openings of the two suction ports 162 face the two grinding rollers 4 respectively. A negative pressure interface 161 connected to the suction port 162 is provided on one side of the extended end of the two discharge plates 16.

[0031] Two hot air blowers 9 and two bristle cleaning parts 10 are symmetrically fixed to the inner wall of the shell 1, and the air outlet ends of the two hot air blowers 9 are respectively directed toward the two brush rollers 66. The bristle cleaning part 10 includes a horizontal plate 101 fixed to the inner wall of the shell 1 at one end, a plurality of scraper flanges 102 fixed to one side of the horizontal plate 101, a plurality of nozzles 103 fixed to one side of the horizontal plate 101, and a liquid supply interface 104 opened on the other side of the horizontal plate 101 and connected to the plurality of nozzles 103.

[0032] By adopting the above technical solution, the motor 2 63 can drive the rotating rod 65 to rotate, and the rotation of the rotating rod 65 can drive the brush roller 66 to rotate. The rotation of the brush roller 66 can clean the grinding roller 4 after being scraped by the scraper 58, and can remove small parts that the scraper 58 cannot reach and thin layers of attachments that the scraper 58 cannot scrape off. Its soft bristles can clean the surface of the grinding roller 4 without damaging it, which helps to extend the surface service life of the grinding roller 4 and remove the parts that the scraper 58 cannot completely scrape off. The brush roller 66 can be deeply cleaned by removing residues, fine particles or thin layers of coating additives. When the brush roller 66 rotates, the inclined top flange 68 on one side of the brush roller 66 can be moved out of the inclined groove 64 (the inclined surface on one side of the inclined top flange 68 cooperates with the inclined surface on the inner wall of the inclined groove 64). After the inclined top flange 68 is moved out, it can push the brush roller 66 to move toward the direction of the elastic component 67 to compress the spring 672. When the inclined top flange 68 moves and enters the inclined groove 64 again, the spring 672 pushes the brush roller 66 to move and reset. The brush roller 66 can realize back and forth reciprocating motion under the cooperation of the elastic component 67 and the inclined top flange 68, and can generate dynamic force, so as to avoid the brush from applying force to a fixed point for a long time, and increase the repeated cleaning force of stubborn substances. A part of the substances brushed by the brush roller 66 falls on the discharge plate 16 and is discharged from the impurity discharge port 12. Since the negative pressure interface 161 can be connected to the negative pressure equipment (such as a vacuum cleaner, a suction machine, etc.), the suction port 162 can generate suction, so that the substances brushed by the brush roller 66 The other part of the material brushed off is sucked into the suction port 162 and discharged from the negative pressure interface 161 into the negative pressure equipment, preventing the material brushed off by the brush roller 66 from falling onto the filter plate 15. At the same time, being sucked into the negative pressure equipment also facilitates its collection and centralized processing. When the bristles on the brush roller 66 pass through the scraper flange 102, the scraper flange 102 can contact the bristles, which helps to make the material on the bristles fall off. At the same time, the nozzle 103 can spray cleaning liquid, and cooperate with the scraper flange 102 to achieve a better material removal effect.

[0033] like Figure 2 and Figure 3 As shown, a material guiding and cooling unit 7 is also connected to the inside of the shell 1, and the material guiding and cooling unit 7 includes two convex extension plates 71 fixedly connected to the inner wall of the shell 1 and located between the feed port 11 and the grinding roller 4, a triangular material dividing seat 72 fixedly connected to the inner wall of the shell 1 and located between the two convex extension plates 71, two material mixing inclined plates 73 fixedly connected to the inner wall of the shell 1 and located between the triangular material mixing seat 72 and the grinding roller 4, and two vibration parts 74 respectively fixedly connected to the lower ends of the two material mixing inclined plates 73.

[0034] Two exhaust hoods 75 are fixedly connected inside the two convex extension plates 71, and an air storage part 78 and an air compressor 79 are fixedly connected to the outer surface of one side of the shell 1. The output end of the air storage part 78 is connected to the input end of the expansion valve 77, and the output end of the expansion valve 77 is connected to the two exhaust hoods 75 through a pipe 76, and the output end of the air compressor 79 is connected to the input end of the air storage part 78.

[0035] By adopting the above technical solution, after the base material enters the shell 1 from the feed port 11, it first falls on the convex extension plate 71, and is separated by the triangular material dividing seat 72 when sliding downward from the convex extension plate 71. During the process of the separated base material sliding downward from the triangular material dividing seat 72, the air compressor 79 (reciprocating, screw or scroll compressor, select the appropriate gas flow and pressure level according to needs) compresses the air to a high pressure state and sends it to the gas storage part 78 (gas storage tank, used to store compressed gas to ensure stable airflow output and balance the system load. The gas storage tank is usually equipped with a gas pressure regulating device, which can accurately control the pressure of the gas. The gas compression and storage is a mature existing technology and will not be repeated here). The compressed gas is stored in the gas storage part 78 to maintain a stable air pressure. When cooling is required, the gas storage part 78 provides a stable gas flow and pressure. force to ensure the smooth operation of the system. The compressed gas released from the gas storage part 78 enters the expansion valve 77. During the expansion process, the pressure of the gas decreases rapidly and the gas temperature drops significantly (the expansion valve 77 causes the compressed gas to expand rapidly, that is, to allow the high-pressure gas to quickly enter a low-pressure area. According to the first law of thermodynamics (the law of conservation of energy) and the concept of adiabatic expansion process, there is no heat exchange with the outside world when the gas expands, which means that the internal energy of the gas decreases during the expansion process, thereby causing the temperature to drop). The cooled gas enters the pipe 76, and the gas enters the exhaust hood 75 through the pipe 76 and is discharged from the exhaust hood 75, thereby rapidly cooling the base material. When the low-temperature gas flows through the base material particles, it takes away the heat on the surface of the base material particles, reducing the probability of the base material particles sticking due to overheating during grinding, which can effectively reduce the temperature of the base material particles without introducing moisture.

[0036] Usage method: After the base material enters the shell 1 from the feed port 11, it first falls on the convex extension plate 71, and is separated by the triangular material distribution seat 72 when sliding down from the convex extension plate 71. During the process of the separated base material sliding down from the triangular material distribution seat 72, the air compressor 79 compresses the air to a high pressure state and sends it to the air storage part 78. The compressed gas released from the air storage part 78 enters the expansion valve 77. The gas enters the pipe 76 after cooling through the expansion valve 77, enters the exhaust hood 75 through the pipe 76, and is discharged from the exhaust hood 75, so as to quickly cool the base material. When the low-temperature gas flows through the base material particles, it takes away the heat on the surface of the base material particles. The base material falls from the triangular material distribution seat 72 and falls between the two grinding rollers 4. The two driving parts 3 drive the two grinding rollers 4 respectively. The two grinding rollers 4 rotate to grind the base material into powder, and the powdered coating additive falls on the filter plate 15, and is filtered by the filter plate 15 and remains at the bottom of the shell 1. The scraper 58 can scrape off the deposits adhering to the outer surface of the grinding roller 4, and the scraper 82 on the support plate 81 can scrape off the attachments on one side of the scraper 58 to prevent the scraper 58 from scraping off the deposits on the outer surface of the grinding roller 4 and leaving the deposits on one side of the scraper 58. The motor 2 63 can drive the rotating rod 65 to rotate, and the rotation of the rotating rod 65 can drive the brush roller 66 to rotate. The rotation of the brush roller 66 can clean the grinding roller 4 after being scraped by the scraper 58, and can remove small parts that the scraper 58 cannot reach and thin layers of attachments that the scraper 58 cannot scrape off.

[0037] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mill for producing coating additives, comprising a housing (1), a plate (2) fixedly connected to one side of the housing (1), a feed port (11) provided at the upper end of the housing (1), two grinding rollers (4) rotatably connected to the inside of the housing (1), and two driving parts (3) fixedly connected to one side of the plate (2) and having output shafts respectively connected to the two grinding rollers (4), characterized in that: Two scraper units (5) are symmetrically connected inside the shell (1), and the scraper units (5) include a movable groove (51) formed on the inner wall of the shell (1) and on one side of the plate body (2), a avoidance groove (52) connected to the movable groove (51), a movable seat (54) movably inserted in the movable groove (51), a tooth groove (57) formed inside the movable seat (54), and a scraper (58) fixed inside the movable seat (54), and two driving components for driving the two movable seats (54) to move in the two movable grooves (51) are connected to the outer surface of one side of the shell (1); The driving assembly comprises two fixing seats (53) symmetrically fixed to the outer surface of one side of the housing (1), a motor (55) fixed to one side of one of the fixing seats (53), and an incomplete gear (56) rotatably connected between the two fixing seats (53) and located in a tooth groove (57), wherein the output shaft of the motor (55) passes through one of the fixing seats (53) and is fixed to one side of the incomplete gear (56), and the incomplete gear (56) is meshed with the tooth groove (57).

2. A mill for producing coating additives according to claim 1, characterized in that: Two impurity discharge openings (13) are symmetrically formed on both sides of the shell (1), and two discharge plates (17) are symmetrically fixedly connected inside the shell (1) and are located respectively below the two movable seats (54), one end of the discharge plate (17) passes through the impurity discharge opening (13) and extends outwards. A filter plate (15) is also fixedly connected to the inner wall of the shell (1), and two openings are symmetrically formed on both sides of the shell (1), and side plates (14) are clamped in the two openings.

3. A mill for producing coating additives according to claim 2, characterized in that: Two blade scraper assemblies (8) are symmetrically connected inside the housing (1), and the blade scraper assemblies (8) include a support plate (81) whose two ends are respectively fixed to the inner walls of the two avoidance grooves (52), a plurality of sprocket wheels (84) rotatably connected inside the support plate (81), a chain belt (85) located inside the support plate (81) and connecting the plurality of sprocket wheels (84), a plurality of scrapers (82) rotatably connected to one side of the support plate (81) and connected to the plurality of sprocket wheels (84), and a gear (83) rotatably connected to the other side of the support plate (81) and connected to one of the sprocket wheels (84), one side of the plurality of scrapers (82) is in contact with one side of the scraper (58), a bracket (59) is fixed to one side of the movable seat (54), and a tooth key (591) meshing with the gear (83) is provided on one side of the bracket (59).

4. A mill for producing coating additives according to claim 3, characterized in that: A plurality of liquid outlets (86) are provided on one side of the support plate (81), and a plurality of liquid supply interfaces (87) communicating with the liquid outlets (86) are provided at the lower end of the support plate (81).

5. A mill for producing coating additives according to claim 4, characterized in that: Two residue cleaning units (6) are symmetrically connected inside the shell (1), and the residue cleaning unit (6) comprises a movable groove (61) formed on the inner wall of the shell (1) and on one side of the plate body (2), a avoidance groove (62) connected to the movable groove (61), a rotating rod (65) with two ends respectively connected to the inner walls of the two movable grooves (61), and a brush roller (66) sleeved on the outside of the rotating rod (65). Two motors (63) are symmetrically fixedly connected to the outer surface of one side of the shell (1), and the output shafts of the two motors (63) both penetrate into the movable groove (61) and are fixedly connected to one end of the rotating rod (65).

6. A mill for producing coating additives according to claim 5, characterized in that: The brush roller (66) is movably sleeved on the outside of the rotating rod (65), and two groups of inclined grooves (64) connected to the second avoidance groove (62) are symmetrically opened inside the plate body (2). One side of the two brush rollers (66) is fixedly connected to two groups of inclined top flanges (68), and the outside of the two rotating rods (65) is also sleeved with an elastic component (67), the elastic component (67) comprising a disk body 1 (671) and a disk body 2 (673) sleeved on the outside of the rotating rod (65), a spring (672) sleeved on the outside of the rotating rod (65) and connecting the disk body 1 (671) and the disk body 2 (673), and a plurality of balls (674) rotatably connected to one side of the disk body 2 (673) and in contact with the other side of the brush roller (66), and one side of the disk body 1 (671) is fixedly connected to the inner wall of the second avoidance groove (62) inside the shell (1).

7. A mill for producing coating additives according to claim 6, characterized in that: Two impurity discharge ports (12) are symmetrically provided on both sides of the shell (1), and two discharge plates (16) are symmetrically fixedly connected to the inside of the shell (1) and are respectively located below the two brush rollers (66). One end of the discharge plate (16) passes through the impurity discharge port (12) and extends outward. A suction port (162) is provided inside the two discharge plates (16), and the openings of the two suction ports (162) face the two grinding rollers (4) respectively. A negative pressure interface (161) connected to the suction port (162) is provided on one side of the extended end of the two discharge plates (16).

8. A mill for producing coating additives according to claim 7, characterized in that: Two hot air blowers (9) and two bristle cleaning parts (10) are symmetrically fixedly connected to the inner wall of the shell (1), and the air outlet ends of the two hot air blowers (9) are respectively directed toward the two brush rollers (66). The bristle cleaning part (10) comprises a horizontal plate (101) fixedly connected at one end to the inner wall of the shell (1), a plurality of scraper flanges (102) fixedly connected to one side of the horizontal plate (101), a plurality of nozzles (103) fixedly connected to one side of the horizontal plate (101), and a second liquid supply interface (104) opened on the other side of the horizontal plate (101) and connected to the plurality of nozzles (103).

9. A mill for producing coating additives according to claim 8, characterized in that: The shell (1) is also connected to a material guiding and cooling unit (7), and the material guiding and cooling unit (7) comprises two convex extension plates (71) fixedly connected to the inner wall of the shell (1) and located between the feed port (11) and the grinding roller (4), a triangular material distribution seat (72) fixedly connected to the inner wall of the shell (1) and located between the two convex extension plates (71), two material leveling inclined plates (73) fixedly connected to the inner wall of the shell (1) and located between the triangular material distribution seat (72) and the grinding roller (4), and two vibration parts (74) respectively fixedly connected to the lower ends of the two material leveling inclined plates (73).

10. A grinding machine for producing coating additives according to claim 9, characterized in that: Two exhaust hoods (75) are fixedly connected inside the two convex extension plates (71), and an air storage portion (78) and an air compressor (79) are fixedly connected to the outer surface of one side of the shell (1). The output end of the air storage portion (78) is connected to the input end of the expansion valve (77), the output end of the expansion valve (77) is connected to the two exhaust hoods (75) through a pipe (76), and the output end of the air compressor (79) is connected to the input end of the air storage portion (78).

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