Horizontal sand mill and its sand milling process used in paint production

Abstract

This invention relates to a horizontal sand mill and its sand milling process for paint production, belonging to the field of grinding equipment technology. It includes a rotating reference barrel, a rotating power system, a sand milling dispersion system, and several adaptive actuating devices. The sand milling dispersion system is installed inside the rotating reference barrel, and the rotating power system drives the sand milling dispersion system. The adaptive actuating devices include an actuating reference ball, an upper sealing plate of the reference ball, a lower sealing plate of the reference ball, an actuating rotating shaft, an actuating rack, and a return spring. The actuating reference ball is installed on the sand milling dispersion system. The actuating reference ball has an actuating space arranged perpendicular to the rotation axis of the sand milling dispersion system. The upper and lower sealing plates of the reference ball are installed at both ends of the actuating space. The two ends of the actuating rack are respectively installed on the upper and lower sealing plates of the reference ball via return springs. The actuating rotating shaft and the actuating rack mesh and drive each other. The end of the actuating rotating shaft is equipped with an actuating plate, achieving sufficient flow of the grinding media and good grinding effect.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and in particular to a horizontal sand mill and its sand milling process used in paint production. Background Technology

[0002] In paint production, horizontal sand mills are the core dispersing and grinding equipment for preparing high-quality coatings. Their core working component is a horizontally placed grinding cylinder filled with grinding media of a specific size, using zirconium beads as the grinding media. Premixed paint slurry is pumped into the grinding chamber, where, driven by a high-speed rotating dispersing disc, the media undergoes intense movement, generating strong shearing, impact, and friction effects on the pigment aggregates. This efficiently disperses the pigment particles into the resin matrix, achieving the required fineness and uniformity.

[0003] Compared to traditional equipment, horizontal sand mills can avoid solvent evaporation, ensuring production safety and quality stability. However, existing horizontal friction mills have long grinding times and low grinding efficiency, leaving room for improvement. They are often unable to meet large demand. Summary of the Invention

[0004] To overcome the technical defects of the existing technology, the present invention provides a horizontal sand mill and its sand milling process for paint production, which realizes full flow of grinding media and good grinding effect.

[0005] The technical solution adopted in this invention is:

[0006] A horizontal sand mill used in paint production includes a frame, a rotating reference barrel, a rotating power system, a sand milling and dispersing system, and several adaptive actuating devices. The sand milling and dispersing system is rotatably installed inside the rotating reference barrel. The rotating power system is drive-connected to the sand milling and dispersing system. Each adaptive actuating device is installed on the sand milling and dispersing system. Each adaptive actuating device includes an actuating reference ball, an upper sealing plate of the reference ball, a lower sealing plate of the reference ball, an actuating rotating shaft, an actuating rack, and a return spring. The actuating reference ball is installed on the sand milling and dispersing system. The actuating reference ball has an actuating space arranged perpendicular to the rotation axis of the sand milling and dispersing system. The upper sealing plate and the lower sealing plate of the reference ball are installed at both ends of the actuating space. The two ends of the actuating rack are respectively installed on the upper sealing plate and the lower sealing plate of the reference ball through return springs. The actuating rotating shaft and the actuating rack mesh and drive each other. An actuating plate is provided at the end of the actuating rotating shaft, and the actuating plate is located at the end of the actuating rotating shaft outside the actuating reference ball.

[0007] Preferably, the top of the rotary reference barrel is provided with a plurality of paint input pipes, grinding media inlets and paint output pipes, each of the paint input pipes and grinding media inlets being installed on the top of the rotary reference barrel, and the paint output pipes being installed on the bottom of the rotary reference barrel.

[0008] Preferably, the rotary power system includes a drive motor and a transmission belt. Both the output end of the drive motor and the sand milling and dispersion system are provided with pulleys, and the output end of the drive motor and the sand milling and dispersion system are connected by the transmission belt.

[0009] Preferably, the sand milling dispersion system includes a sand milling rotary shaft, a swing reference disk, and several mounting rods. The actuating reference ball is hinged to the mounting rod via a connecting rod. The actuating reference ball is mounted on a connecting rod, which is hinged to the mounting rod. The swing reference disk is mounted at both ends of the sand milling rotary shaft. The two ends of the sand milling rotary shaft are rotatably mounted inside a rotary reference barrel. Each mounting rod is mounted between two swing reference disks.

[0010] Preferably, the upper sealing plate and the lower sealing plate of the reference ball are installed at both ends of the actuation space of the reference ball via a threaded pair.

[0011] Preferably, a plurality of sealing rings are provided between the actuating rotary shaft and the actuating reference ball.

[0012] Preferably, a sliding rail is provided within the actuation space of the actuating rack and the actuating reference ball, and the actuating rack is installed within the actuation space via the sliding rail.

[0013] The sanding process using a horizontal sand mill, specifically a horizontal sand mill used in paint production, includes the following steps:

[0014] S1: Fill the rotary reference barrel with grinding media;

[0015] S2: Start the rotary power system to rotate, driving the sand mill dispersion system to rotate;

[0016] S3: Fill the rotary reference barrel with paint, and drive the rotary shaft to rotate during the rotation of the reference ball by the actuating rack and pinion, thereby realizing the real-time rotation angle of the actuating plate.

[0017] The beneficial effects of this invention are:

[0018] The sand milling and dispersion system is rotatably installed inside the rotary reference barrel to achieve the flow and grinding of the grinding media and paint inside the rotary reference barrel. The rotary power system is connected to the sand milling and dispersion system to achieve the rotation of the sand milling and dispersion system. All adaptive actuation devices are installed on the sand milling and dispersion system.

[0019] The adaptive actuation device includes an actuation reference ball, an upper sealing plate of the reference ball, a lower sealing plate of the reference ball, an actuation rotary shaft, an actuation rack, and a return spring. The actuation reference ball is installed on the sand milling and dispersion system and rotates along with the rotation of the sand milling and dispersion system. The actuation reference ball has an actuation space arranged perpendicular to the rotation axis of the sand milling and dispersion system. The upper and lower sealing plates of the reference ball are installed at both ends of the actuation space to prevent paint from seeping into the actuation space and affecting the rotation of the actuation rack and the actuation rotary shaft. The two ends of the actuation rack are respectively installed on the upper and lower sealing plates of the reference ball through return springs. The actuation rotary shaft and the actuation rack mesh and drive each other. The end of the actuation rotary shaft is provided with an actuation plate, which is located at the end of the actuation rotary shaft outside the actuation reference ball, so that the actuation plate agitates the paint in the paint, allowing the paint to fully convect.

[0020] During the rotation of the reference ball following the sand mill dispersion system, the rack slides within the reference ball due to the gravity of the rack and return spring. The rotation of the rotating shaft drives the rotation of the agitator plate, ensuring sufficient flow of the grinding media and resulting in good grinding performance. It is worth noting that the force applied to the return spring by the rack varies with the rotation speed of the sand mill dispersion system, causing the rack's position to change. In other words, for every revolution of the sand mill dispersion system, the rack makes one round trip, causing the agitator plate to rotate back and forth once. Furthermore, the rotation angle of the agitator plate changes when the sand mill dispersion system accelerates or decelerates. The agitator plate deflects in real-time during the rotation of the sand mill dispersion system, giving the paint a more random agitation direction, allowing for thorough convection mixing of the paint and grinding media, thus enhancing the grinding effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 A schematic diagram of the adaptive toggle device.

[0023] Figure 3 A cross-sectional view of the adaptive toggle device structure.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Rack;

[0026] 2. Rotary reference bucket; 21. Paint input pipe; 22. Grinding media inlet; 23. Paint output pipe;

[0027] 3. Rotation power system; 31. Drive motor; 32. Transmission belt;

[0028] 5. Sand mill dispersion system; 51. Sand mill rotary shaft; 52. Swing reference plate; 53. Mounting rod;

[0029] 6. Adaptive actuation device; 61. Actuation reference ball; 611. Actuation space; 62. Upper sealing plate of reference ball; 63. Lower sealing plate of reference ball; 64. Actuation rotary shaft; 641. Actuation plate; 65. Actuation rack; 66. Return spring; 67. Connecting rod. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figure 1 — Figure 3 As shown, this embodiment provides a horizontal sand mill for paint production, including a frame 1, a rotating reference barrel 2, a rotating power system 3, a sand milling dispersion system 5, and several adaptive actuating devices 6. The sand milling dispersion system 5 is rotatably installed inside the rotating reference barrel 2 to achieve the flow and grinding of grinding media and paint inside the rotating reference barrel 2. The rotating power system 3 is connected to the sand milling dispersion system 5 to achieve the rotation of the sand milling dispersion system 5. Each adaptive actuating device 6 is installed on the sand milling dispersion system 5.

[0032] Specifically, the adaptive actuation device 6 includes an actuation reference ball 61, an upper sealing plate 62 for the reference ball, a lower sealing plate 63 for the reference ball, an actuation rotation shaft 64, an actuation rack 65, and a return spring 66. The actuation reference ball 61 is installed on the sand milling and dispersion system 5 and rotates along with the rotation of the sand milling and dispersion system 5. The actuation reference ball 61 has an actuation space 611 arranged perpendicular to the rotation axis of the sand milling and dispersion system 5. The upper sealing plate 62 and the lower sealing plate 63 are installed at both ends of the actuation space 611 to prevent actuation. Paint seeps into space 611, affecting the rotation of the actuating rack 65 and the actuating rotary shaft 64. The two ends of the actuating rack 65 are respectively mounted on the upper sealing plate 62 and the lower sealing plate 63 of the reference ball via return springs 66. The actuating rotary shaft 64 and the actuating rack 65 mesh and drive each other. The end of the actuating rotary shaft 64 is provided with an actuating plate 641, which is located at the end of the actuating rotary shaft 64 outside the actuating reference ball 61. This causes the actuating plate 641 to stir the paint in the paint, so that the paint can be fully convectioned.

[0033] Specifically, during the rotation of the reference ball 61 following the sand milling and dispersion system 5, the actuating rack 65 slides within the reference ball 61 due to the gravity of the actuating rack 65 and the return spring 66. This rotation of the actuating plate 641 is achieved by rotating the rotating shaft 64, ensuring sufficient flow of the grinding media and resulting in a good grinding effect. It is worth noting that the tension applied to the return spring 66 by the actuating rack 65 varies with the rotation speed of the sand milling and dispersion system 5, causing the position of the actuating rack 65 to change. In other words, for every revolution of the sand milling and dispersion system 5, the actuating rack 65 makes one round trip, causing the actuating plate 641 to rotate back and forth once. Furthermore, the rotation angle of the actuating plate 641 changes when the sand milling and dispersion system 5 accelerates and decelerates. The actuating plate 641 deflects in real time during the rotation of the sand milling and dispersion system 5, making the direction of paint agitation more random, thus ensuring thorough convection mixing of the paint and grinding media and enhancing the grinding effect.

[0034] Specifically, the top of the rotary reference barrel 2 is provided with several paint input pipes 21, grinding media inlets 22 and paint output pipes 23. Each paint input pipe 21 and grinding media inlet 22 is installed on the top of the rotary reference barrel 2 to realize the input of paint and grinding media. The paint output pipe 23 is installed at the bottom of the rotary reference barrel 2 to realize the output of the ground paint.

[0035] Specifically, the rotary power system 3 includes a drive motor 31 and a transmission belt 32. The output end of the drive motor 31 and the sand milling and dispersion system 5 are both equipped with pulleys. The output end of the drive motor 31 and the sand milling and dispersion system 5 are connected by the transmission belt 32 to realize the rotation of the sand milling and dispersion system 5.

[0036] Specifically, the sand milling dispersion system 5 includes a sand milling rotary shaft 51, a swing reference disk 52, and several mounting rods 53. The actuating reference ball 61 is hinged to the mounting rod 53 via a connecting rod 67. That is, the actuating reference ball 61 is mounted on the connecting rod 67, and the connecting rod 67 is hinged to the mounting rod 53. The swing reference disk 52 is mounted at both ends of the sand milling rotary shaft 51. The two ends of the sand milling rotary shaft 51 are rotatably mounted in the rotary reference barrel 2 via bearings. Each mounting rod 53 is mounted between two swing reference disks 52 to realize the rotation of the actuating reference ball 61. In order to prevent adjacent actuating reference balls 61 from colliding with each other, several isolation disks are provided between the two swing reference disks 52. Each isolation disk separates each connecting rod 67 so that adjacent actuating reference balls 61 have a distance.

[0037] Specifically, the upper sealing plate 62 and the lower sealing plate 63 of the reference ball are installed at both ends of the actuation space 611 of the actuation reference ball 61 through a threaded pair, thereby achieving the sealing and isolation of the actuation space 611 from the paint.

[0038] Specifically, several sealing rings are provided between the actuating rotary shaft 64 and the actuating reference ball 61 to prevent paint from seeping in.

[0039] Specifically, a sliding rail is provided in the actuation space 611 between the actuating rack 65 and the actuating reference ball 61. The actuating rack 65 is installed in the actuation space 611 through the sliding rail to realize the sliding of the actuating rack 65.

[0040] The sanding process using a horizontal sand mill, specifically a horizontal sand mill used in paint production, includes the following steps:

[0041] S1: Fill the rotary reference barrel 2 with grinding media;

[0042] S2: Start the rotary power system 3 to rotate, driving the sand mill dispersion system 5 to rotate;

[0043] S3: Fill the rotary reference barrel 2 with paint. During the rotation of the reference ball 61, the rack 65 drives the rotary shaft 64 to rotate during the deformation of the return spring 66, so that the rotary plate 641 can rotate in real time, causing the paint to flow irregularly and enhancing the convection and grinding effect.

[0044] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A horizontal sand mill used in paint production, characterized in that, The system includes a frame, a rotating reference barrel, a rotating power system, a sand milling and dispersing system, and several adaptive actuating devices. The sand milling and dispersing system is rotatably mounted inside the rotating reference barrel. The rotating power system is drively connected to the sand milling and dispersing system. Each adaptive actuating device is mounted on the sand milling and dispersing system. Each adaptive actuating device includes an actuating reference ball, an upper sealing plate of the reference ball, a lower sealing plate of the reference ball, an actuating rotating shaft, an actuating rack, and a return spring. The actuating reference ball is mounted on the sand milling and dispersing system. The actuating reference ball has an actuating space arranged perpendicular to the rotating axis of the sand milling and dispersing system. The upper sealing plate and the lower sealing plate of the reference ball are mounted at both ends of the actuating space. The two ends of the moving rack are respectively mounted on the upper and lower sealing plates of the reference ball via return springs. The rotating shaft meshes with the rotating rack. The end of the rotating shaft is provided with a toggle plate, which is located at the end of the rotating shaft outside the rotating reference ball. The sand grinding dispersion system includes a sand grinding rotating shaft, a swinging reference disk, and several mounting rods. The rotating reference ball is hinged to the mounting rod via a connecting rod. The rotating reference ball is mounted on a connecting rod, which is hinged to the mounting rod. The swinging reference disk is mounted at both ends of the sand grinding rotating shaft. The two ends of the sand grinding rotating shaft are rotatably mounted inside the rotating reference barrel. Each mounting rod is mounted between two swinging reference disks.

2. The horizontal sand mill for paint production according to claim 1, characterized in that, The top of the rotary reference barrel is provided with several paint input pipes, grinding media inlets and paint output pipes. Each of the paint input pipes and grinding media inlets is installed on the top of the rotary reference barrel, and the paint output pipe is installed on the bottom of the rotary reference barrel.

3. The horizontal sand mill for paint production according to claim 1, characterized in that, The rotary power system includes a drive motor and a transmission belt. Both the output end of the drive motor and the sand milling and dispersion system are equipped with pulleys, and the output end of the drive motor and the sand milling and dispersion system are connected by the transmission belt.

4. The horizontal sand mill for paint production according to claim 1, characterized in that, The upper and lower sealing plates of the reference ball are installed at both ends of the actuation space of the reference ball via threaded joints.

5. The horizontal sand mill for paint production according to claim 1, characterized in that, Several sealing rings are provided between the actuating rotary shaft and the actuating reference ball.

6. The horizontal sand mill for paint production according to claim 1, characterized in that, The actuating space between the actuating rack and the actuating reference ball is provided with a sliding rail, and the actuating rack is installed in the actuating space through the sliding rail.

7. A sand milling process using a horizontal sand mill, employing the horizontal sand mill described in claim 1 for paint production, characterized in that... Includes the following steps: S1: Fill the rotary reference barrel with grinding media; S2: Start the rotary power system to rotate, driving the sand mill dispersion system to rotate; S3: Fill the rotary reference barrel with paint, and drive the rotary shaft to rotate during the rotation of the reference ball by the actuating rack and pinion, thereby realizing the real-time rotation angle of the actuating plate.

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