Special grinding machine for water-based color paste

Abstract

The utility model relates to the technical field of color paste production equipment, in particular to a special grinding machine for water-based color paste, which comprises a power device, a grinding assembly, a grinding wheel and a grinding wheel, the grinding cylinder wraps the grinding assembly; and the discharging assembly comprises a sealing ring, a filtering assembly is arranged in the center of the sealing ring, and a center cooling assembly is arranged at the tail of the filtering assembly. According to the grinding machine, the hollow rotating frame is arranged, the heat exchange barrel can be inserted into the rotating frame, cooling liquid is injected into the cooling pipe, color paste can be cooled in the center, meanwhile, the rotating frame and the grinding disc can be cooled, and heat accumulation is reduced; cooling liquid is introduced into the outer cooling pipe, color paste can be cooled from the outside, the cooling effect can be improved in cooperation with the heat exchange barrel, and higher grinding speed can be adapted; in addition, heat exchange liquid can be filled between the heat exchange barrel and the cooling pipe, and the heat exchange efficiency between the cooling pipe and the heat exchange barrel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of color paste production equipment, in particular to a special grinding machine for water-based color paste. Background Art

[0002] Color paste is a liquid mixture of highly concentrated colorants, pigments, and polymers. Color pastes with pure oil as the binder are called oil-based color pastes. Color pastes with resin paint as the binder are called resin-based color pastes. Color pastes with surfactants added to water as the medium to disperse pigments and fillers are called water-based color pastes.

[0003] Water-based pigment pastes are typically ground in a horizontal sand mill filled with grinding media. During operation, the mill's high-speed rotation and stirring drive the grinding media into high-speed, irregular motion within the grinding barrel. The friction between the grinding media grinds and breaks the pigment into smaller particles.

[0004] During grinding in a horizontal grinder, friction and collision between the grinding media, between the grinding media and the pigment, and between the grinding media and the grinder all generate significant heat. Excessive heat can affect the quality of the color paste, causing the color of the color paste to change and resulting in inconsistent color of the ground color paste. Existing sand mills typically divide the grinding drum into two parts, an inner and outer section, with a water-cooling pipe installed between the two sections. Cooling cement is passed through the pipe to cool the color paste and grinding media from the outside, relying on the flow of the color paste and grinding media to control the overall temperature. However, during high-speed grinding, the color paste flows rapidly, and the heat exchange time is too short, which easily leads to heat accumulation. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a special grinding machine for water-based color paste.

[0006] The technical solution of the utility model is:

[0007] A special grinding machine for water-based color paste, comprising:

[0008] A power device includes a grinding bracket, a grinding assembly is rotatably mounted on one side of the grinding bracket, and a driving assembly is provided on the top of the grinding bracket for driving the grinding assembly to rotate;

[0009] A grinding cylinder, the grinding cylinder is fixedly mounted on a side of the grinding bracket provided with the grinding assembly and wraps the grinding assembly;

[0010] A discharge assembly includes a sealing ring, which is fixedly mounted at the rear end of the grinding cylinder. A filter assembly is provided in the center of the sealing ring. The filter assembly is inserted into the sealing ring and is rotatably connected to the grinding assembly. A central cooling assembly is provided at the rear of the filter assembly. The central cooling assembly is inserted into the center of the grinding assembly but does not contact the grinding assembly.

[0011] Preferably, the grinding assembly includes a rotating frame, which is in the shape of a hollow cylinder. A plurality of hollow grooves are provided on the side of the rotating frame, and a plurality of grinding discs are fixedly installed on the outside of the rotating frame.

[0012] Preferably, the grinding cylinder includes a grinding inner cylinder, the inner diameter of the grinding inner cylinder is slightly larger than the grinding disc, the grinding inner cylinder is fixedly connected to the grinding bracket through a connecting flange, and a feed port is provided through the center of the top surface of the connecting flange.

[0013] Preferably, an external cooling tube is wound around the outside of the grinding inner tube, and a protective outer tube is wrapped around the outside of the external cooling tube. Both ends of the external cooling tube pass through the protective outer tube and extend outward.

[0014] Preferably, the filter assembly includes a filter frame, the filter frame is inserted into the head of the turret and is rotatably connected to the turret, and the head of the filter frame is fixedly mounted on the outside of the sealing ring.

[0015] Preferably, the outer side of the portion of the filter frame located inside the rotating frame is wrapped with a filter screen, and a discharge pipe is provided at the outer bottom of the head of the filter frame.

[0016] Preferably, the central cooling assembly includes a heat exchange barrel, which is fixedly mounted at the tail end of the filter frame and inserted into the rotating frame. A cooling pipe is provided in the heat exchange barrel, and the head of the cooling pipe passes through the filter frame and extends to the outside of the sealing ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model provides a hollow rotating frame, so that the heat exchange barrel can be inserted into the rotating frame. By injecting coolant into the cooling pipe, the color paste can be cooled in the center, and the rotating frame and the grinding disc can be cooled at the same time to reduce heat accumulation; by introducing coolant into the external cooling pipe, the color paste can be cooled from the outside, and in conjunction with the heat exchange barrel, the cooling effect can be improved to adapt to a higher grinding speed; in addition, heat exchange liquid can be filled between the heat exchange barrel and the cooling pipe to improve the heat exchange efficiency between the cooling pipe and the heat exchange barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the power equipment structure in this utility model;

[0021] Figure 3 This is a cross-sectional view of the grinding cylinder structure in the present invention;

[0022] Figure 4 This is a cross-sectional diagram of the tail cover and grinding cylinder structure of the utility model;

[0023] Figure 5 It is a cross-sectional schematic diagram of the tail cover structure of the present invention.

[0024] The meaning of each number in the figure is:

[0025] 1. Power equipment; 11. Grinding bracket; 12. First power source; 13. Transmission shaft; 14. Rotating frame; 15. Grinding disc;

[0026] 2. Grinding cylinder; 21. Grinding inner cylinder; 22. Connecting flange; 23. Feed inlet; 24. External cooling pipe; 25. Protective outer cylinder; 26. Moving wheel;

[0027] 3. Discharge assembly; 31. Sealing ring; 32. Filter rack; 33. Filter screen; 34. Heat exchange barrel; 35. Cooling pipe; 351. Center pipe; 352. Spiral coil; 36. Discharge pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figure 1-5 The present invention describes the above technical solution in detail through the following embodiments:

[0031] A special grinding machine for water-based color paste, comprising:

[0032] The power equipment 1 includes a grinding bracket 11, a grinding assembly is rotatably mounted on one side of the grinding bracket 11, and a driving assembly is provided on the top of the grinding bracket 11 for driving the grinding assembly to rotate.

[0033] The drive assembly includes a first power source 12, which can be a three-phase motor. The output shaft of the first power source 12 is connected to a transmission shaft 13 through a belt drive structure. The transmission shaft 13 is rotatably connected to the grinding bracket 11 through a bearing, and passes through the grinding bracket 11 and is fixedly connected to the grinding assembly.

[0034] The grinding assembly includes a rotating frame 14 . The rotating frame 14 is in a hollow cylindrical shape. A plurality of hollow grooves are provided on the side of the rotating frame 14 . A plurality of grinding discs 15 are fixedly installed on the outside of the rotating frame 14 .

[0035] The rotating frame 14 is fixedly connected to the transmission shaft 13 by bolts, and the grinding disc 15 is fixedly installed on the outside of the rotating frame 14 by screws.

[0036] When the first power source 12 is working, it can drive the transmission shaft 13 to rotate through the belt transmission structure, thereby driving the rotating frame 14 and the grinding disc 15 to rotate.

[0037] The grinding cylinder 2 is fixedly mounted on the side of the grinding bracket 11 where the grinding assembly is provided and wraps the grinding assembly.

[0038] The grinding cylinder 2 includes a grinding inner cylinder 21 , the inner diameter of which is slightly larger than the grinding disc 15 . The grinding inner cylinder 21 is fixedly connected to the grinding bracket 11 via a connecting flange 22 . A feed port 23 is provided in the center of the top surface of the connecting flange 22 .

[0039] The connecting flange 22 is fixedly connected to the grinding bracket 11 by bolts. Color paste is fed into the grinding inner cylinder 21 through the feed port 23. Grinding media can also be fed into the grinding inner cylinder 21 through the feed port 23. The rotation of the rotating frame 14 and grinding disc 15 drives the grinding media and the color paste raw material to move, grinding the color paste with the grinding media. Depending on the color paste, the grinding media can be selected from ceramic beads, glass beads, steel beads, etc.

[0040] An outer cooling tube 24 is wound around the outer surface of the grinding inner tube 21 , and a protective outer tube 25 is wrapped around the outer cooling tube 24 . Both ends of the outer cooling tube 24 pass through the protective outer tube 25 and extend outward.

[0041] The protective outer cylinder 25 is welded to the connecting flange 22 , and a coolant can be introduced into the outer cooling pipe 24 , and the coolant can be oil or cold water.

[0042] The coolant flowing along the outer cooling pipe 24 can take away the heat from the surface of the grinding inner cylinder 21 , and the grinding inner cylinder 21 can exchange heat with the color paste, taking away part of the heat in the color paste.

[0043] A moving wheel 26 is welded to the bottom of the protective outer cylinder 25 , and the moving wheel 26 is in rolling connection with the grinding bracket 11 , which can facilitate the installation and disassembly of the grinding cylinder 2 .

[0044] The discharge assembly 3 includes a sealing ring 31, which is fixedly mounted at the tail end of the grinding cylinder 2. A filter assembly is provided in the center of the sealing ring 31. The filter assembly is inserted into the sealing ring 31 and is rotatably connected to the grinding assembly. A central cooling assembly is provided at the tail of the filter assembly. The central cooling assembly is inserted into the center of the grinding assembly but does not contact the grinding assembly.

[0045] The sealing ring 31 is fixedly mounted on the rear end of the grinding inner cylinder 21 by means of bolts.

[0046] The filter assembly includes a filter frame 32 , which is inserted into the head of the rotating frame 14 and is rotatably connected to the rotating frame 14 . The head of the filter frame 32 is fixedly mounted on the outside of the sealing ring 31 by screws.

[0047] The filter frame 32 has no openings at both ends and a hollowed-out middle. The head of the rotating frame 14 is sleeved on the outside of the filter frame 32. The filter frame 32 can provide a certain support for the rotating frame 14 to prevent the rotating frame 14 from deflecting when rotating.

[0048] The outer side of the portion of the filter frame 32 located inside the rotating frame 14 is wrapped with a filter screen 33 , and a discharge pipe 36 is welded to the outer bottom of the head of the filter frame 32 .

[0049] The ground color paste can pass through the filter screen 33 into the filter frame 32 and then be discharged from the discharge pipe 36. The filter screen 33 is used to prevent the grinding medium from being discharged.

[0050] The discharged color paste will be injected into the grinding cylinder 2 again through the feed port 23 by the circulation pump for grinding to ensure the grinding quality. The circulation pump can adopt a well-known diaphragm pump. The circulation pump is not shown in the figure.

[0051] The central cooling assembly includes a heat exchange barrel 34 , which is fixedly mounted at the rear end of the filter frame 32 and inserted into the rotating frame 14 . A cooling pipe 35 is provided in the heat exchange barrel 34 , and the head of the cooling pipe 35 passes through the filter frame 32 and extends to the outside of the sealing ring 31 .

[0052] The cooling pipe 35 includes a central pipe 351 and a spiral coil 352. The central pipe 351 is inserted into the filter frame 32 from the outside and passes through the filter frame 32 to extend into the heat exchange barrel 34. The spiral coil 352 is located in the heat exchange barrel 34. One end of the spiral coil 352 is connected to the central pipe 351, and the other end passes through the filter frame 32 and extends to the outside of the sealing ring 31.

[0053] The heat exchange barrel 34 is fixedly connected to the filter frame 32 by bolts. The interior of the heat exchange barrel 34 is sealed. The heat exchange barrel 34 can be filled with heat exchange liquid, which can be oil.

[0054] The coolant enters the central tube 351 and passes through the spiral coil 352 before being discharged. In the spiral coil 352, heat is exchanged with the heat exchange liquid, thereby exchanging heat with the heat exchange barrel 34, thereby cooling the color paste from the center. At the same time, the heat exchange barrel 34 can exchange heat with the rotating frame 14, thereby lowering the temperature of the rotating frame 14 and the grinding disc 15 and reducing heat accumulation.

[0055] When using this equipment in this embodiment, the operator fixes the grinding inner cylinder 21 to the grinding bracket 11 and wraps the rotating frame 14 and the grinding disc 15, fixes the sealing ring 31 to the tail end of the grinding inner cylinder 21, and then inserts the heat exchange barrel 34 and the filter frame 32 into the rotating frame 14 from the center of the sealing ring 31. Finally, the filter frame 32 is fixedly connected to the sealing ring 31 with screws.

[0056] A certain amount of grinding medium is fed into the feed port 23, and then the color paste is introduced. The first power source 12 is controlled to work, and the transmission shaft 13 drives the rotating frame 14 and the grinding disc 15 to rotate, thereby grinding the color paste with the grinding medium.

[0057] When grinding starts, coolant is introduced into the external cooling pipe 24 and the cooling pipe 35 at the same time, thereby cooling the color paste from both the outside and the inside.

[0058] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A special grinding machine for water-based color paste, characterized in that: include: A power device (1), the power device (1) comprising a grinding bracket (11), a grinding assembly being rotatably mounted on one side of the grinding bracket (11), a driving assembly being provided on the top of the grinding bracket (11), and the driving assembly being used to drive the grinding assembly to rotate; A grinding cylinder (2), wherein the grinding cylinder (2) is fixedly mounted on a side of a grinding bracket (11) provided with a grinding assembly and wraps the grinding assembly; A discharge assembly (3) includes a sealing ring (31), the sealing ring (31) is fixedly mounted on the rear end of the grinding cylinder (2), a filter assembly is provided at the center of the sealing ring (31), the filter assembly is inserted into the sealing ring (31) and is rotatably connected to the grinding assembly, and a central cooling assembly is provided at the rear end of the filter assembly, the central cooling assembly is inserted into the center of the grinding assembly but does not contact the grinding assembly.

2. A special grinding machine for water-based color paste according to claim 1, characterized in that: The grinding assembly comprises a rotating frame (14), the rotating frame (14) is in a hollow cylindrical shape, a plurality of hollow grooves are provided on the side of the rotating frame (14), and a plurality of grinding discs (15) are fixedly installed on the outside of the rotating frame (14).

3. A special grinding machine for water-based color paste according to claim 2, characterized in that: The grinding cylinder (2) comprises a grinding inner cylinder (21), the inner diameter of the grinding inner cylinder (21) is slightly larger than the grinding disc (15), the grinding inner cylinder (21) is fixedly connected to the grinding bracket (11) via a connecting flange (22), and a feed port (23) is provided through the center of the top surface of the connecting flange (22).

4. A special grinding machine for water-based color paste according to claim 3, characterized in that: An external cooling tube (24) is wound around the outside of the grinding inner tube (21), and a protective outer tube (25) is wrapped around the outside of the external cooling tube (24). Both ends of the external cooling tube (24) pass through the protective outer tube (25) and extend outward.

5. The water-based color paste grinding machine according to claim 2, characterized in that: The filter assembly comprises a filter frame (32), the filter frame (32) is inserted into the head of the rotating frame (14) and is rotatably connected to the rotating frame (14), and the head of the filter frame (32) is fixedly mounted outside the sealing ring (31).

6. A special grinding machine for water-based color paste according to claim 5, characterized in that: The outer side of the portion of the filter frame (32) located inside the rotating frame (14) is wrapped with a filter screen (33), and a discharge pipe (36) is provided at the outer bottom of the head of the filter frame (32).

7. The water-based color paste grinding machine according to claim 5, characterized in that: The central cooling assembly includes a heat exchange barrel (34), which is fixedly mounted on the rear end of the filter frame (32) and inserted into the rotating frame (14). A cooling pipe (35) is provided in the heat exchange barrel (34), and the head of the cooling pipe (35) passes through the filter frame (32) and extends to the outside of the sealing ring (31).

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