Fine grinder for coating raw materials

Abstract

The utility model relates to the technical field of coating production, and discloses a coating raw material fine grinder which comprises a grinding box and two supporting legs fixedly installed below the left side and the right side of the grinding box, the supporting legs are arranged in a front-back mode, and electric sliding rails are arranged on the left side and the right side of an inner cavity of the grinding box and close to the lower portion respectively. Electric sliding blocks are installed on the electric sliding rails in a sliding mode correspondingly, and grinding of added coating raw materials can be achieved through mutual cooperation of the grinding roller, a rotating gear, a driving motor, a transmission rod, an L-shaped base, a belt, a reciprocating lead screw, a lead screw nut, an L-shaped fixing rod, a movable rack plate, a movable gear and a gear ring. And the grinding base can be driven to rotate on the outer side of the grinding ball through transmission, the coating raw materials can be ground again, the grinding effect is improved, most of the ground raw materials meet the requirements, and the grinding effect is better.

Description

Technical Field

[0001] This utility model relates to the technical field of coating production, specifically to a fine grinder for coating raw materials. Background Technology

[0002] Coatings are liquid or solid materials that are applied to the surface of an object and form a thin film under certain conditions to provide protection, decoration, or other special functions (insulation, rust prevention, mildew prevention, heat resistance, etc.). During processing, they need to be ground by a grinder.

[0003] A paint circulating grinding machine, as disclosed in CN202321062458.0, includes a base. Two mounting brackets are symmetrically fixedly connected to the upper side wall of the base. The vertical side walls of the two mounting brackets are rotatably connected to a rotating shaft via bearings. A grinding box is fixedly connected between the two rotating shafts. A motor is fixedly connected to the left side wall of the mounting bracket on the left side. The output shaft of the motor is fixedly connected to the rotating shaft. A sealing plate is fixedly connected to the top of the grinding box. A feed valve is fixedly connected to the sealing plate. A drive motor is fixedly connected to the sealing plate. A rotating shaft is fixedly connected to the output end of the drive motor. A conical grinding roller is fixedly sleeved on the outside of the rotating shaft. A grinding seat is fixedly connected to the inner wall of the grinding box. This invention realizes automatic circulating grinding of paint raw materials, thereby enabling all paint raw materials to be ground to the required effect and effectively improving the grinding uniformity of the paint grinding machine.

[0004] The aforementioned patent proposes a coating circulation grinding machine that can grind raw materials and turn them over for further grinding. However, it lacks a component for screening the raw materials, resulting in the continued mixing and grinding of materials that meet the requirements and those that do not, leading to low grinding efficiency and hindering the rapid commencement of grinding work.

[0005] Therefore, we propose a fine grinding mill for coating raw materials to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a fine grinder for coating raw materials to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fine grinder for coating raw materials, comprising a grinding box and two support legs fixedly installed on the lower left and right sides of the grinding box. The support legs are arranged front and back. Electric slide rails are respectively provided on the lower left and right sides of the inner cavity of the grinding box. Electric sliders are slidably installed on the electric slide rails. A screening screen cylinder is fixedly installed on the opposite side of the electric sliders. A shaking component is installed on the lower left and right sides of the grinding box. A rectangular feeding hopper is fixedly installed through the middle of the top of the grinding box. An opening and closing component is installed on the left side of the rectangular feeding hopper near the rear side. A grinding component is installed in the inner cavity of the rectangular feeding hopper. A grinding seat is provided near the top of the inner cavity of the grinding box. A grinding groove is opened on the grinding seat. A discharge port is opened at the bottom of the inner cavity of the grinding groove. A grinding ball is provided in the inner cavity of the grinding groove. Support rods are fixedly installed on the left and right sides of the grinding ball near the top. The opposite ends of the support rods are fixedly installed on the inner wall of the inner cavity of the grinding box.

[0008] The grinding assembly includes two grinding rollers arranged in the inner cavity of a rectangular feeding hopper. The grinding rollers are arranged front to back, and a rotating shaft is fixedly installed through the middle of each grinding roller. The left and right ends of the rotating shafts extend movably through to the outside of the rectangular feeding hopper. Rotating gears are fixedly sleeved on the output ends of the rotating shafts, and the rotating gears are meshed with each other. A support plate is fixedly installed on the right side of the rectangular feeding hopper near the right rear side, and a drive motor is fixedly installed on the top of the support plate. The output end of the drive motor is fixedly connected to the right end of the rear rotating shaft. A transmission rod is provided on the rear side of the rectangular feeding hopper, and a reciprocating screw is fixedly sleeved on the outer side of the transmission rod. A screw nut is movably installed on the outer side of the reciprocating screw. A movable rack plate is provided below the rear side of the screw nut. A movable gear meshes with the front side of the movable rack plate. A rectangular opening is provided on the rear side of the grinding box near the top. The front side of the movable gear passes through the rectangular opening and extends into the inner cavity of the grinding box. A gear ring meshes with the front side of the movable gear, and the gear ring is fixedly sleeved on the outside of the grinding seat.

[0009] Preferably, an L-shaped seat is movably mounted on the right end of the transmission rod, the bottom of the L-shaped seat is fixedly mounted on the grinding box, and the bottom of the lead screw nut is slidably mounted on the top of the inner side of the L-shaped seat. A first single groove wheel is fixedly sleeved at the output end of the transmission rod, a second single groove wheel is provided on the front side of the first single groove wheel, and a belt is sleeved on the outer side of the first single groove wheel and the second single groove wheel together. The second single groove wheel is fixedly sleeved on the outer side of the rear rotating shaft.

[0010] Preferably, an L-shaped fixing rod is fixedly installed at the middle of the rear side of the lead screw nut, and the bottom end of the L-shaped fixing rod is fixedly installed on the movable rack plate.

[0011] Preferably, guide blocks are fixedly installed on the front and rear sides of the inner cavity of the rectangular feeding hopper near the top.

[0012] Preferably, the opening and closing assembly includes an active bevel gear located on the left side of the rectangular feeding hopper near the rear side and a driven bevel gear meshing with the top of the active bevel gear. The right side of the active bevel gear is fixedly installed on the left end of the rear rotating shaft. A rotating rod is fixedly installed at the middle of the top of the driven bevel gear. A straight plate is provided above the top of the driven bevel gear. The right side of the straight plate is fixedly installed on the rectangular feeding hopper. The upper end of the rotating rod extends movably through to the outside of the straight plate and is fixedly installed on a turntable. A sliding shaft is fixedly installed at the top of the turntable near the front edge. A sliding frame is movably sleeved on the outside of the sliding shaft. The right side of the sliding frame is slidably installed on the rectangular feeding hopper. An L-shaped rod is fixedly installed at the middle of the rear side of the sliding frame. A T-shaped baffle is fixedly installed at the right end of the L-shaped rod. The front side of the T-shaped baffle extends slidably through to the inner cavity of the rectangular feeding hopper.

[0013] Preferably, the vibration component includes L-shaped moving rods respectively disposed on the left and right sides of the grinding box near the bottom. The left and right sides of the grinding box near the bottom are respectively provided with moving openings, and the opposite ends of the L-shaped moving rods pass through the adjacent moving openings and are respectively fixedly installed on adjacent electric slide rails. The rear ends of the L-shaped moving rods are jointly fixedly installed with a movable plate. A threaded sleeve is fixedly installed on the front side of the movable plate near the middle. A threaded rod is threaded through the middle of the threaded sleeve, and the upper end of the threaded rod is fixedly extended to the outside of the movable gear.

[0014] Preferably, the upper and lower ends of the threaded rod are respectively movably mounted with plate plates, and the front sides of the plate plates are respectively fixedly mounted on the grinding box.

[0015] Preferably, guide rods are slidably installed on the movable plate near the left and right sides, and rectangular plates are fixedly installed on the upper ends of the guide rods, with the front sides of the rectangular plates fixedly installed on the grinding box.

[0016] Preferably, a limiting ring is rotatably installed on the outer side of the grinding seat near the top, and the outer side of the limiting ring is fixedly installed on the inner wall of the grinding box cavity.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Through the cooperation of components such as grinding roller, rotating gear, drive motor, transmission rod, L-shaped seat, belt, reciprocating lead screw, lead screw nut, L-shaped fixed rod, moving rack plate, movable gear and gear ring, the added coating raw materials can be ground. Furthermore, through transmission, the grinding seat can be driven to rotate outside the grinding ball, which can grind the coating raw materials again, improve the grinding effect, and ensure that most of the ground raw materials meet the requirements, resulting in a better grinding effect.

[0019] 2. Through the interaction of components such as the driving bevel gear, driven bevel gear, turntable, sliding shaft, sliding frame, L-shaped rod, and T-shaped baffle, the T-shaped baffle can be driven to move back and forth in the rectangular feeding hopper, thus realizing the indirect feeding of coating raw materials. This can effectively improve the grinding effect, avoid excessive accumulation caused by adding too much at once, and prevent it from affecting the grinding fineness. In addition, through the interaction of components such as the L-shaped moving rod, movable plate, guide rod, rectangular plate, threaded sleeve, threaded rod, and flat plate, the screening cylinder can be driven to shake back and forth, which can screen the grinding coating raw materials, allowing those that meet the requirements to pass through the screening cylinder for feeding. Attached Figure Description

[0020] Figure 1 This is a perspective view of the entire utility model;

[0021] Figure 2 This is a rear perspective view of the present invention;

[0022] Figure 3 This is a partial rear-view perspective view of the present invention.

[0023] Figure 4 This is a partial unfolded perspective view of the present invention;

[0024] Figure 5 This is a partial three-dimensional view of the grinding seat of this utility model;

[0025] Figure 6 This is a partial three-dimensional view of the toothed ring of this utility model;

[0026] Figure 7 This is a partial rear cross-sectional perspective view of the present invention;

[0027] Figure 8 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0028] In the diagram: 1. Grinding box; 2. Support leg; 3. Electric slide rail; 4. Electric slider; 5. Screening cylinder; 6. Vibration assembly; 61. L-shaped moving rod; 62. Movable plate; 621. Guide rod; 622. Rectangular plate; 63. Threaded sleeve; 64. Threaded rod; 641. Flat plate; 7. Rectangular feeding hopper; 71. Guide block; 8. Opening and closing assembly; 81. Driving bevel gear; 82. Driven bevel gear; 83. Turntable; 84. Slide rail 85. Moving shaft; 86. Sliding frame; 87. L-shaped rod; 88. T-shaped baffle plate; 9. Grinding assembly; 99. Grinding roller; 90. Rotating gear; 91. Drive motor; 92. Transmission rod; 93. L-shaped seat; 94. Belt; 95. Reciprocating screw; 96. Screw nut; 97. L-shaped fixed rod; 98. Moving rack plate; 99. Movable gear; 10. Grinding seat; 101. Limiting ring; 20. Grinding ball. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figure 1-8 A fine grinder for coating raw materials includes a grinding box 1 and two support legs 2 fixedly installed on the lower left and right sides of the grinding box 1. The support legs 2 are arranged front and back. Electric slide rails 3 are respectively provided on the lower left and right sides of the inner cavity of the grinding box 1. Electric sliders 4 are slidably installed on the electric slide rails 3. A screening screen cylinder 5 is fixedly installed on the opposite side of the electric sliders 4. A shaking component 6 is installed on the lower left and right sides of the grinding box 1. A rectangular feeding hopper 7 is fixedly installed through the middle of the top of the grinding box 1. An opening and closing component 8 is installed on the left side of the rectangular feeding hopper 7 near the rear. The inner cavity of the feeding hopper 7 is equipped with a grinding component 9. The inner cavity of the grinding box 1 is provided with a grinding seat 10 near the top. The grinding seat 10 has a grinding groove. The bottom of the inner cavity of the grinding groove has a feeding port. The inner cavity of the grinding groove is provided with grinding balls 20. Support rods are fixedly installed on the left and right sides of the grinding balls 20 near the top. The opposite ends of the support rods are fixedly installed on the inner wall of the inner cavity of the grinding box 1. The shaking component 6 can drive the screening cylinder 5 to shake and screen. The opening and closing component 8 is conducive to the indirect feeding of raw materials. The grinding component 9 can grind the added raw materials.

[0032] In this embodiment, the grinding assembly 9 includes two grinding rollers 91 disposed in the inner cavity of the rectangular feeding hopper 7. The grinding rollers 91 are arranged front to back, and a rotating shaft is fixedly installed through the upper middle part of each grinding roller 91. The left and right ends of the rotating shaft extend movably through to the outside of the rectangular feeding hopper 7. Rotating gears 92 are fixedly sleeved on the output ends of the rotating shafts, and the rotating gears 92 are meshed with each other. A support plate is fixedly installed on the right side of the rectangular feeding hopper 7 near the right rear side, and a drive motor 93 is fixedly installed on the top of the support plate. The output end of the drive motor 93 is fixedly connected to the right end of the rear rotating shaft. A transmission rod 94 is provided on the rear side of the rectangular feeding hopper 7 for transmission. A reciprocating lead screw 95 is fixedly sleeved on the outer side of the rod 94. A lead screw nut 96 is movably installed on the outer side of the reciprocating lead screw 95. A movable rack plate 97 is provided at the lower rear side of the lead screw nut 96. A movable gear 98 is meshed on the front side of the movable rack plate 97. A rectangular opening is provided on the rear side of the grinding box 1 near the top. The front side of the movable gear 98 passes through the rectangular opening and extends into the inner cavity of the grinding box 1. A gear ring 99 is meshed on the front side of the movable gear 98. The gear ring 99 is fixedly sleeved on the outer side of the grinding seat 10. It can grind the added raw materials and drive the grinding seat 10 to rotate on the outside of the grinding ball 20, realizing two grinding of the raw materials, and the grinding is more refined.

[0033] Specifically, an L-shaped seat 941 is movably mounted on the right end of the transmission rod 94. The bottom of the L-shaped seat 941 is fixedly mounted on the grinding box 1, and the bottom of the lead screw nut 96 is slidably mounted on the top of the inner side of the L-shaped seat 941. A first single groove wheel is fixedly sleeved at the output end of the transmission rod 94. A second single groove wheel is provided on the front side of the first single groove wheel, and a belt 942 is sleeved on the outer side of both the first and second single groove wheels. The second single groove wheel is fixedly sleeved on the outer side of the rear rotating shaft, which facilitates the transmission rod 94 to rotate through the belt 942 when the rotating shaft rotates.

[0034] Specifically, an L-shaped fixing rod 961 is fixedly installed at the middle of the rear side of the lead screw nut 96, and the bottom end of the L-shaped fixing rod 961 is fixedly installed on the movable rack plate 97, which facilitates the movable rack plate 97 to move synchronously with the lead screw nut 96.

[0035] Specifically, guide blocks 71 are fixedly installed on the front and rear sides of the inner cavity of the rectangular feeding hopper 7 near the top, which facilitates the guiding of the raw materials being fed.

[0036] In this example, the opening and closing assembly 8 includes a driving bevel gear 81 located on the left side of the rectangular feeding hopper 7 near the rear side and a driven bevel gear 82 meshing with the top of the driving bevel gear 81. The right side of the driving bevel gear 81 is fixedly mounted on the left end of the rear rotating shaft. A rotating rod is fixedly mounted at the middle of the top of the driven bevel gear 82. A straight plate is provided above the top of the driven bevel gear 82. The right side of the straight plate is fixedly mounted on the rectangular feeding hopper 7. The upper end of the rotating rod extends movably through to the outside of the straight plate and is fixedly mounted with a rotating rod. A sliding shaft 84 is fixedly installed on the top of the turntable 83 near the front edge, and a sliding frame 85 is movably sleeved on the outer side of the sliding shaft 84. The right side of the sliding frame 85 is slidably installed on the rectangular feeding hopper 7. An L-shaped rod 86 is fixedly installed in the middle of the rear side of the sliding frame 85. A T-shaped baffle 87 is fixedly installed at the right end of the L-shaped rod 86. The front side of the T-shaped baffle 87 slides through and extends into the inner cavity of the rectangular feeding hopper 7, which can drive the T-shaped baffle 87 to move back and forth in the rectangular feeding hopper 7 to realize the indirect feeding of raw materials.

[0037] Specifically, a limiting ring 101 is rotatably installed on the outer side of the grinding base 10 near the top, and the outer side of the limiting ring 101 is fixedly installed on the inner wall of the inner cavity of the grinding box 1, which serves to limit the rotation of the grinding base 10.

[0038] In this embodiment: During use, the coating material to be ground is added to the rectangular feeding hopper 7. After addition, the drive motor 93 is started. When the drive motor 93 runs, it drives the rear rotating shaft to rotate, which in turn drives the adjacent rotating gear 92 to rotate. Since the rotating gears 92 are meshed, they drive the front and rear rotating shafts to rotate synchronously in opposite directions. When the rotating shafts rotate, they drive the adjacent grinding rollers 91 to rotate, thus grinding the added material. When the rear rotating shaft rotates, it also drives the driving bevel gear 81 and the transmission rod 94 via the belt 942 to rotate. When the driving bevel gear 81 rotates, it drives the rotating rod to rotate via the driven bevel gear 82. When the rotating rod rotates, it drives the turntable 83 to rotate. When the turntable 83 rotates, it drives the sliding frame 85 to move back and forth via the sliding shaft 84. When the sliding frame 85 moves back and forth, it passes through the L-shaped... Rod 86 drives T-shaped baffle 87 to move back and forth within rectangular hopper 7, allowing raw materials to be intermittently added between grinding rollers 91, avoiding excessive addition that could affect grinding efficiency. When transmission rod 94 rotates, it drives reciprocating screw 95 to rotate, which in turn drives screw nut 96 to move left and right. The left and right movement of screw nut 96 drives moving rack plate 97 to move left and right through L-shaped fixed rod 961. The left and right movement of moving rack plate 97 drives movable gear 98 to rotate forward and reverse, which in turn drives gear ring 99 to rotate forward and reverse. This also drives grinding seat 10 to rotate forward and reverse outside grinding ball 20, thus achieving secondary grinding of raw materials after they have been fed by grinding rollers 91, improving the grinding fineness. After two grinding processes, the raw materials fall into screening cylinder 5.

[0039] Example 2

[0040] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figure 1-7 The shaking component 6 includes L-shaped moving rods 61 respectively located on the left and right sides of the grinding box 1 near the bottom. The left and right sides of the grinding box 1 are respectively provided with moving openings near the bottom, and the opposite ends of the L-shaped moving rods 61 pass through the adjacent moving openings and are respectively fixedly installed on the adjacent electric slide rails 3. The rear ends of the L-shaped moving rods 61 are all fixedly installed with a movable plate 62. The front side of the movable plate 62 is fixedly installed with a threaded sleeve 63 near the middle. The threaded sleeve 63 is threaded through the middle of the threaded rod 64. The upper end of the threaded rod 64 is fixedly extended to the outside of the movable gear 98, which can drive the screening screen cylinder 5 to shake back and forth in the grinding box 1 to achieve screening of the ground raw materials.

[0041] Specifically, plate 641 is movably installed at the upper and lower ends of the threaded rod 64, and the front side of the plate 641 is fixedly installed on the grinding box 1, which serves to support and limit the threaded rod 64.

[0042] Specifically, guide rods 621 are slidably installed on the movable plate 62 near the left and right sides, and rectangular plates 622 are fixedly installed on the upper ends of the guide rods 621. The front sides of the rectangular plates 622 are fixedly installed on the grinding box 1, which serves to guide and position the movable plate 62 when it moves up and down.

[0043] In this embodiment: when the movable gear 98 rotates, it drives the threaded rod 64 to rotate back and forth in both directions. When the threaded rod 64 rotates, it drives the movable plate 62 to move up and down on the guide rod 621 through the threaded sleeve 63. When the movable plate 62 moves up and down, it drives the adjacent electric slide rail 3 to move up and down through the L-shaped moving rod 61. At this time, the screening cylinder 5 will also move up and down synchronously, which plays the role of screening the raw materials after grinding. The raw materials that meet the conditions fall through the screening cylinder 5 into the collection trough placed in advance by the staff for collection. After screening, the screening cylinder 5 can be moved forward to the outside of the grinding box 1 through the electric slide rail 3 and the electric slider 4, which makes it convenient for the staff to take out the raw materials remaining inside and add them back for grinding again.

[0044] Working principle: In use, the paint material to be ground is added to the rectangular feeding hopper 7. After addition, the drive motor 93 is started. When the drive motor 93 runs, it drives the rear rotating shaft to rotate, which in turn drives the adjacent rotating gear 92 to rotate. Since the rotating gears 92 are meshed, they drive the front and rear rotating shafts to rotate synchronously in opposite directions. When the rotating shafts rotate, they drive the adjacent grinding rollers 91 to rotate, thus grinding the added material. The rotation of the rear rotating shaft also drives the active bevel gear 81 and the transmission rod 94 via the belt 942 to rotate. The active bevel gear 81 rotates... When in motion, the driven bevel gear 82 drives the rotating rod to rotate, which in turn drives the turntable 83 to rotate. The turntable 83, in turn, drives the sliding frame 85 to move back and forth via the sliding shaft 84. The sliding frame 85, moving back and forth, drives the T-shaped baffle 87 to move back and forth within the rectangular feeding hopper 7 via the L-shaped rod 86. This allows for the indirect addition of raw materials between the grinding rollers 91, preventing excessive addition from affecting grinding efficiency. Meanwhile, the rotation of the transmission rod 94 drives the reciprocating screw 95 to rotate, which in turn drives the screw nut 96 to move left and right. The left and right movement of the screw nut 96... The L-shaped fixed rod 961 drives the movable rack plate 97 to move back and forth left and right. When the movable rack plate 97 moves left and right, it drives the movable gear 98 to rotate back and forth in both directions. When the movable gear 98 rotates in both directions, it also drives the gear ring 99 to rotate back and forth in both directions. At this time, it also drives the grinding seat 10 to rotate back and forth in both directions outside the grinding ball 20. This achieves secondary grinding of the raw material after it has been fed by the grinding roller 91, improving the grinding fineness. After two grindings, the raw material falls into the screening cylinder 5. When the movable gear 98 rotates, it drives the threaded rod 64 to rotate back and forth in both directions. When the threaded rod 64 rotates, it will... The threaded sleeve 63 drives the movable plate 62 to move back and forth on the guide rod 621. When the movable plate 62 moves up and down, it drives the adjacent electric slide rail 3 to move back and forth through the L-shaped moving rod 61. At this time, the screening cylinder 5 will also move up and down synchronously, which plays the role of screening the ground raw materials. The raw materials that meet the conditions fall through the screening cylinder 5 into the collection trough placed in advance by the staff. After screening, the electric slide rail 3 and the electric slider 4 can drive the screening cylinder 5 to move forward to the outside of the grinding box 1, which is convenient for the staff to take out the remaining raw materials inside and add them back for grinding again.

[0045] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0046] Although the present invention has been described in detail with reference to the foregoing 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. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fine grinder for coating raw materials, comprising a grinding box (1) and two support legs (2) fixedly installed on the lower left and right sides of the grinding box (1), characterized in that: The support legs (2) are arranged in front and back. Electric slide rails (3) are respectively arranged on the left and right sides of the inner cavity of the grinding box (1) near the bottom. Electric sliders (4) are slidably installed on the electric slide rails (3). Screening cylinders (5) are fixedly installed on the opposite side of the electric sliders (4). Shaking components (6) are installed on the left and right sides of the grinding box (1) near the bottom. A rectangular feeding hopper (7) is fixedly installed through the middle of the top of the grinding box (1). An opening and closing component (8) is installed on the left side of the rectangular feeding hopper (7) near the rear side. A grinding component (9) is installed in the inner cavity of the rectangular feeding hopper (7). A grinding seat (10) is arranged near the top of the inner cavity of the grinding box (1). A grinding groove is opened on the grinding seat (10). A discharge port is opened at the bottom of the inner cavity of the grinding groove. A grinding ball (20) is arranged in the inner cavity of the grinding groove. Support rods are fixedly installed on the left and right sides of the grinding ball (20) near the top. The opposite ends of the support rods are fixedly installed on the inner wall of the inner cavity of the grinding box (1). The grinding assembly (9) includes two grinding rollers (91) disposed in the inner cavity of a rectangular feeding hopper (7). The grinding rollers (91) are arranged front to back, and a rotating shaft is fixedly installed through the middle of the upper part of each grinding roller (91). The left and right ends of the rotating shaft extend movably through to the outside of the rectangular feeding hopper (7). Rotating gears (92) are fixedly sleeved on the output ends of the rotating shafts, and the rotating gears (92) are meshed with each other. A support plate is fixedly installed on the right side of the rectangular feeding hopper (7) near the right rear side, and a drive motor (93) is fixedly installed on the top of the support plate. The output end of the drive motor (93) is fixedly connected to the right end of the rear rotating shaft. A transmission rod (94) is provided on the rear side of the feed hopper (7). A reciprocating screw (95) is fixedly sleeved on the outer side of the transmission rod (94). A screw nut (96) is movably installed on the outer side of the reciprocating screw (95). A movable rack plate (97) is provided below the rear side of the screw nut (96). A movable gear (98) is engaged on the front side of the movable rack plate (97). A rectangular opening is provided on the rear side of the grinding box (1) near the top. The front side of the movable gear (98) passes through the rectangular opening and extends into the inner cavity of the grinding box (1). A gear ring (99) is engaged on the front side of the movable gear (98). The gear ring (99) is fixedly sleeved on the outer side of the grinding seat (10).

2. The fine grinding mill for coating raw materials according to claim 1, characterized in that: An L-shaped seat (941) is movably installed on the right end of the transmission rod (94). The bottom of the L-shaped seat (941) is fixedly installed on the grinding box (1), and the bottom of the lead screw nut (96) is slidably installed on the top of the inner side of the L-shaped seat (941). A first single groove wheel is fixedly sleeved at the output end of the transmission rod (94). A second single groove wheel is provided on the front side of the first single groove wheel, and a belt (942) is sleeved on the outer side of the first single groove wheel and the second single groove wheel. The second single groove wheel is fixedly sleeved on the outer side of the rear rotating shaft.

3. The fine grinder for coating raw materials according to claim 1, characterized in that: An L-shaped fixing rod (961) is fixedly installed at the middle of the rear side of the lead screw nut (96), and the bottom end of the L-shaped fixing rod (961) is fixedly installed on the movable rack plate (97).

4. The fine grinder for coating raw materials according to claim 1, characterized in that: Guide blocks (71) are fixedly installed on the front and rear sides of the inner cavity of the rectangular feeding hopper (7) near the top.

5. The fine grinder for coating raw materials according to claim 1, characterized in that: The opening and closing assembly (8) includes a driving bevel gear (81) located on the left side of the rectangular feeding hopper (7) near the rear side and a driven bevel gear (82) meshing with the top of the driving bevel gear (81). The right side of the driving bevel gear (81) is fixedly installed on the left end of the rear rotating shaft. A rotating rod is fixedly installed at the middle of the top of the driven bevel gear (82). A straight plate is provided above the top of the driven bevel gear (82). The right side of the straight plate is fixedly installed on the rectangular feeding hopper (7). The upper end of the rotating rod extends movably through to the straight plate. A turntable (83) is fixedly installed on the outside of the plate. A sliding shaft (84) is fixedly installed on the top of the turntable (83) near the front edge. A sliding frame (85) is movably sleeved on the outside of the sliding shaft (84). The right side of the sliding frame (85) is slidably installed on the rectangular feeding hopper (7). An L-shaped rod (86) is fixedly installed in the middle of the rear side of the sliding frame (85). A T-shaped baffle (87) is fixedly installed at the right end of the L-shaped rod (86). The front side of the T-shaped baffle (87) slides through and extends into the inner cavity of the rectangular feeding hopper (7).

6. The fine grinder for coating raw materials according to claim 1, characterized in that: The shaking component (6) includes L-shaped moving rods (61) respectively located on the left and right sides of the grinding box (1) near the bottom. The left and right sides of the grinding box (1) are respectively provided with moving openings near the bottom. The opposite ends of the L-shaped moving rods (61) pass through the adjacent moving openings and are respectively fixedly installed on the adjacent electric slide rails (3). The rear ends of the L-shaped moving rods (61) are jointly fixedly installed with a movable plate (62). A threaded sleeve (63) is fixedly installed on the front side of the movable plate (62) near the middle. A threaded rod (64) is threaded through the middle of the threaded sleeve (63). The upper end of the threaded rod (64) is fixedly extended to the outside of the movable gear (98).

7. A fine grinder for coating raw materials according to claim 6, characterized in that: The upper and lower ends of the threaded rod (64) are respectively movably mounted with plate (641), and the front side of the plate (641) is respectively fixedly mounted on the grinding box (1).

8. A fine grinder for coating raw materials according to claim 6, characterized in that: Guide rods (621) are slidably installed on the movable plate (62) near the left and right sides respectively, and rectangular plates (622) are fixedly installed on the upper ends of the guide rods (621) respectively. The front side of the rectangular plates (622) is fixedly installed on the grinding box (1).

9. A fine grinder for coating raw materials according to claim 1, characterized in that: A limiting ring (101) is rotatably installed on the outer side of the grinding seat (10) near the top, and the outer side of the limiting ring (101) is fixedly installed on the inner wall of the inner cavity of the grinding box (1).

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