Horizontal sand mill for paint production

Abstract

The utility model provides a horizontal sand mill for paint production belongs to paint production equipment technical field, including the machine table, be equipped with output shaft on the machine table, the output shaft is fixed with the stirring drum for stirring, the outside of stirring drum is equipped with the grinding barrel, just the grinding barrel is fixed on the machine table, the both ends of grinding barrel are connected with the feed pipe and the discharge pipe respectively, the inside coaxial fixed of grinding barrel has the filter bowl. Through setting up two rotary arms outside filter bowl, and being equipped with the arc face on the side of rotary arm to filter bowl, when the material of high -speed rotation in grinding barrel flows through the arc face, under the influence of protruding arc face, the flow rate is faster, can form the low pressure area that produces the suction of filter bowl, under the action of low pressure suction, the material of filter bowl outer wall adhesion is extracted, plays the role of cleaning filter bowl.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of paint production equipment, and specifically relates to a horizontal sand mill for paint production. BACKGROUND

[0002] In the paint production process, a sand mill needs to be used to grind the well-proportioned raw materials, so that the paint reaches the specified particle fineness. The sand mill, also known as a bead mill, is a kind of wet ultrafine grinding equipment, mainly used for wet grinding of liquid products, and widely applied in the industries of paint, coating, ink, color paste, dye, pigment, etc. Its working principle is that a certain proportion of grinding medium and material to be ground are loaded in a grinding cylinder, a motor drives a stirrer to rotate, so that the medium and material in the grinding cylinder continuously roll, grind and mix. In this process, strong collision, friction and shearing action occur between the material and the grinding medium, so as to accelerate the grinding of fine particles and the dispersion of lumps. The ground material flows out from the filter screen with the help of the pushing of a feeding pump.

[0003] However, in the process of discharging the material, the filter screen often gets blocked due to the excessive impurities in the material and the breakage of the grinding medium, which leads to poor discharging. At present, when the blockage is serious, the grinding cylinder needs to be disassembled, the filter screen needs to be cleaned, and the production needs to be restarted after the cleaning. The cleaning process of the filter screen is time-consuming, which reduces the production efficiency. SUMMARY

[0004] In view of the above problems, the horizontal sand mill for paint production is provided to overcome the defects of the prior art.

[0005] The technical scheme adopted by the utility model is as follows: the utility model provides a horizontal sand mill for paint production, which comprises a machine table, an output shaft is arranged on the machine table, a stirring cylinder for stirring is fixed on the output shaft, a grinding cylinder is arranged on the outer side of the stirring cylinder, and the grinding cylinder is fixed on the machine table, a feeding pipe and a discharging pipe are respectively connected to the two ends of the grinding cylinder, a filter cartridge is coaxially fixed in the interior of the grinding cylinder, and the discharging pipe extends into the filter cartridge. The outer side of the filter cartridge is provided with two symmetrical rotating arms, and the rotating arms are arranged parallel to the filter cartridge. The side of the rotating arm facing the filter cartridge is provided with an arc surface, and the convex direction of the arc surface faces the filter cartridge. When the high-speed rotating material in the grinding cylinder flows through the arc surface, a low-pressure area with suction force to the filter cartridge is formed. The inside of the filter cartridge is provided with a transmission shaft tube, the transmission shaft tube is coaxially arranged with the filter cartridge, the grinding barrel is provided with a driving component for driving the transmission shaft tube to rotate, the first end of the two rotating arms is connected with a support arm, and the rotating arm is connected to the transmission shaft tube through the support arm, so that the rotating arm can rotate along the outer periphery of the filter cartridge.

[0006] Further, the first end of the transmission shaft tube extends to the outside of the grinding barrel, the output end of the driving component is connected with the first end of the transmission shaft tube, the transmission shaft tube can be driven to rotate, the second end of the transmission shaft tube penetrates the filter cartridge and extends into the grinding barrel, and the support arm is connected to the second end of the transmission shaft tube.

[0007] Further, the inside of the transmission shaft tube is provided with a water inlet cavity and a backflow cavity, the water inlet cavity and the backflow cavity are connected with an external cold water machine, the rotating arm and the support arm are both provided in a hollow structure, the second end of the rotating arm is provided with a connecting ring, the second ends of the two rotating arms are both connected to the connecting ring, and the two support arms are respectively communicated with the water inlet cavity and the backflow cavity, so that the rotating arm, the support arm and the connecting ring form a pipeline for circulating flow of cooling liquid.

[0008] Further, the end face of the first end of the transmission shaft tube is fixedly provided with a second cooling water inlet pipe and a second cooling water outlet pipe, the second cooling water inlet pipe is communicated with the water inlet cavity, the second cooling water outlet pipe is communicated with the backflow cavity, and the second cooling water inlet pipe and the second cooling water outlet pipe are connected to an external cold water machine through a hose.

[0009] Further, the driving component comprises a motor and a transmission mechanism, the output end of the motor is connected with the first end of the transmission shaft tube through the transmission mechanism, and the transmission shaft tube can be driven to reciprocatingly rotate.

[0010] Further, the motor comprises a step motor.

[0011] Further, the transmission mechanism comprises a first belt pulley, a second belt pulley and a transmission belt, the first belt pulley is fixed on the output end of the motor, the second belt pulley is coaxially sleeved on the first end of the transmission shaft tube, and the transmission belt is connected to the first belt pulley and the second belt pulley respectively.

[0012] Further, the first belt pulley and the second belt pulley are both synchronous belt pulleys, and the transmission belt is a synchronous belt.

[0013] Further, the stirring barrel is provided with a communication groove at one end close to the filter cartridge.

[0014] Further, the side wall of the grinding barrel is provided with a cooling interlayer for cooling liquid flow, and the two ends of the grinding barrel are respectively connected with a first cooling water inlet pipe and a first cooling water outlet pipe in communication with the cooling interlayer, and the first cooling water inlet pipe and the first cooling water outlet pipe are connected to an external cold water machine.

[0015] The utility model discloses the beneficial effects achieved by the above structure are as follows: 1、 through setting up two rotary arms on the outside of filter cylinder, and setting up arc surface on the side of rotary arm towards filter cylinder, when the material rotating at high speed in grinding barrel flows through arc surface, the flow rate is faster under the influence of protruding arc surface, can form low pressure area to filter cylinder, under the action of low pressure suction, the material adhered to the outer wall of filter cylinder is separated, plays the role of cleaning filter cylinder.

[0016] 2、 rotary arm and support arm are arranged as hollow structure, the second end of rotary arm is equipped with connecting ring, the second end of two rotary arms is connected to connecting ring, and two support arms are communicated with water inlet cavity and reflux cavity respectively, make rotary arm, support arm and connecting ring form the pipeline for circulating flow of cooling liquid, can cool material from inside, improve the cooling efficiency of material, avoid that material gathers again because of high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 2 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 3 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 4 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 1 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 5 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 6 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 7 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model; Figure 8 The utility model discloses a structure schematic diagram of horizontal sand mill for paint production is provided to embodiment of the utility model.

[0018] The components include: 1. Machine base; 11. Feed pipe; 12. Discharge pipe; 2. Mixing drum; 201. Connecting groove; 3. Grinding barrel; 301. Cooling jacket; 31. First cooling water inlet pipe; 32. First cooling water outlet pipe; 4. Filter cylinder; 5. Drive shaft pipe; 51. Second cooling water inlet pipe; 52. Second cooling water outlet pipe; 501. Water inlet chamber; 502. Return chamber; 6. Rotating arm; 601. Arc-shaped surface; 61. Support arm; 62. Connecting ring; 7. Motor; 71. First pulley; 72. Second pulley; 73. Drive belt.

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model proposes a horizontal sand mill for paint production, including a machine base 1, a stirring drum 2, a grinding barrel 3 and a filter cylinder 4. The machine base 1 is equipped with a drive motor and a transmission mechanism. The machine base 1 is equipped with an output shaft. The drive motor inside the machine base 1 drives the output shaft to rotate through the transmission mechanism.

[0023] The mixing drum 2 is fixed on the output shaft, and the grinding drum 3 is sleeved on the outside of the mixing drum 2. The mixing drum 2 is driven by the output shaft and rotates inside the grinding drum 3, which drives the material and grinding media inside the grinding drum 3 to rotate and grind. The two ends of the grinding drum 3 are respectively connected to the feed pipe 11 and the discharge pipe 12. The material to be ground is transported into the grinding drum 3 through the feed pipe 11, and the ground material is discharged through the discharge pipe 12. A filter cylinder 4 is coaxially fixed inside the grinding barrel 3. The discharge pipe 12 extends into the filter cylinder 4, so that the material being ground in the grinding barrel 3 is filtered by the filter cylinder 4 and then discharged through the discharge pipe 12, while the blocked material continues to remain in the grinding barrel 3 for grinding.

[0024] Furthermore, the feed pipe 11 and the discharge pipe 12 are respectively connected to the two ends of the grinding barrel 3, and the filter cylinder 4 is located at the end of the grinding barrel 3 away from the feed pipe 11, so that the material conveyed by the feed pipe 11 can be fully ground and then filtered by the filter cylinder 4 and discharged by the discharge pipe 12, reducing the probability of the filter cylinder 4 being blocked.

[0025] In this way, the material to be ground is continuously conveyed into the grinding barrel 3 through the feed pipe 11. The stirring drum 2 is driven by the output shaft and rotates inside the grinding barrel 3, causing the material and grinding media inside the grinding barrel 3 to rotate. Strong collision, friction and shearing action will be generated between the material and the grinding media, so that the material is ground into finer particles. The material in the grinding barrel 3 is filtered through the filter cylinder 4 and then discharged through the discharge pipe 12, while the material that does not pass through the filter cylinder 4 continues to remain in the grinding barrel 3 for grinding.

[0026] Combination Figure 3 As shown, a connecting groove 201 is provided at one end of the mixing drum 2 near the filter cylinder 4, so that the material can circulate between the inside and outside of the mixing drum 2 through the connecting groove 201. The material can enter the mixing drum 2 through the connecting groove 201 and then come into contact with the filter cylinder 4 for filtration. The blocked material can be discharged through the connecting groove 201 and re-grinded.

[0027] Combination Figure 2 As shown, the side wall of the grinding barrel 3 is provided with a cooling jacket 301 for the flow of coolant. The two ends of the grinding barrel 3 are respectively connected to a first cooling water inlet pipe 31 and a first cooling water outlet pipe 32 that communicate with the cooling jacket 301. The first cooling water inlet pipe 31 and the first cooling water outlet pipe 32 are connected to an external chiller. The external chiller can deliver cooling water to the cooling jacket 301 through the first cooling water inlet pipe 31. The cooling water in the cooling jacket 301 can be discharged through the first cooling water outlet pipe 32 and flow back to the external chiller.

[0028] Thus, during the grinding process, the external chiller can deliver cooling water to the cooling jacket 301 through the first cooling water inlet pipe 31. Under the action of the delivery pressure, the cooling water in the cooling jacket 301 can be discharged through the first cooling water outlet pipe 32 and flow back to the external chiller for circulation, so that the cooling jacket 301 is always filled with circulating cooling water, thereby cooling down the material in the grinding barrel 3 and preventing the material from re-aggregating and clumping due to high temperature.

[0029] Combination Figure 5 and Figure 8As shown, the outer side of the filter cartridge 4 is provided with two symmetrically arranged rotating arms 6, and the length direction of the rotating arms 6 is parallel to the axial direction of the filter cartridge 4. The side of the rotating arm 6 facing the filter cartridge 4 is provided with an arc-shaped surface 601, and the convex direction of the arc-shaped surface 601 is towards the filter cartridge 4 (e.g., Figure 8 (as shown) During the grinding process of the coating, the stirring drum 2 rotates at a high speed, generally around 1000 revolutions per minute. Therefore, the material is stirred and rotates at a high speed. When the material rotating at high speed in the grinding drum 3 flows through the arc surface 601, it is affected by the convex arc surface 601 and the flow rate is fast, which can form a low-pressure zone that generates suction on the filter cartridge 4. Under the action of low-pressure suction, the material attached to the outer wall of the filter cartridge 4 is drawn off, which plays the role of cleaning the filter cartridge 4.

[0030] Furthermore, the filter cartridge 4 is equipped with a drive shaft tube 5 inside, which is coaxially arranged with the filter cartridge 4. The grinding barrel 3 is equipped with a drive component for driving the drive shaft tube 5 to rotate. The first end of the two rotating arms 6 is connected to a support arm 61. The rotating arms 6 are connected to the drive shaft tube 5 through the support arm 61, so that the rotating arms 6 can rotate along the outer circumference of the filter cartridge 4. As the rotating arms 6 rotate, the rotating arms 6 can clean the outer wall of the filter cartridge 4 in a cyclic manner, avoiding the filter cartridge 4 from clogging and maintaining a high filtration efficiency.

[0031] It should be understood that the rotational speed of the rotating arm 6 is relatively slow, and there is a sufficient speed difference between the rotational speed of the material and the rotational speed of the rotating arm 6, so that the material can generate sufficient suction when flowing through the arc-shaped surface 601.

[0032] Combination Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the transmission shaft tube 5 has an inlet chamber 501 and a return chamber 502 inside. The inlet chamber 501 and the return chamber 502 are connected to an external chiller. The external chiller supplies cooling water into the inlet chamber 501, and the cooling water in the return chamber 502 flows back to the external chiller. Both the rotating arm 6 and the support arm 61 are hollow structures. The second end of the rotating arm 6 is provided with a connecting ring 62. The second ends of both rotating arms 6 are connected to the connecting ring 62, and the two support arms 61 are respectively connected to the water inlet chamber 501 and the return chamber 502, so that the rotating arm 6, the support arm 61 and the connecting ring 62 form a pipeline for the circulation of coolant. Cooling water in the inlet chamber 501 flows through the support arm 61 connected to it to the corresponding rotating arm 6, then through the connecting ring 62 to the rotating arm 6 on the other side, and finally through the support arm 61 connected to the return chamber 502 to the return chamber 502, and circulates in the external chiller, so that cooling water is always circulating in the rotating arm 6, the support arm 61 and the connecting ring 62, which can cool the material from the inside.

[0033] Thus, during the grinding process, in order to reduce the heat generated by friction, an external chiller is used to supply cooling water to the water inlet chamber 501. The cooling water in the water inlet chamber 501 flows through the support arm 61 connected to it to the corresponding rotating arm 6, and then flows through the connecting ring 62 to the rotating arm 6 on the other side. Finally, it flows through the support arm 61 connected to the return chamber 502 to the return chamber 502. The cooling water in the return chamber 502 flows back to the external chiller for circulation. Cooling water is always circulating in the rotating arm 6, the support arm 61 and the connecting ring 62, which can cool the material from the inside, improve the cooling efficiency of the material, and prevent the material from re-aggregating and clumping due to high temperature.

[0034] In a specific embodiment, a second cooling water inlet pipe 51 and a second cooling water outlet pipe 52 are fixed to the end face of the first end of the drive shaft tube 5. The second cooling water inlet pipe 51 is connected to the water inlet chamber 501, and the second cooling water outlet pipe 52 is connected to the return chamber 502. The second cooling water inlet pipe 51 and the second cooling water outlet pipe 52 are connected to an external chiller through a hose.

[0035] It should be noted that the rotation mode of the drive shaft tube 5 is bidirectional reciprocating rotation, and the unidirectional rotation angle is 180°. Since the two rotating arms 6 are symmetrically arranged, by rotating 180°, the rotation path of the two rotating arms 6 can cover the side wall of the filter cartridge 4 for a full circle, thus cleaning the filter cartridge 4. At the same time, the reciprocating rotation mode will not affect the hose connected to the external chiller. While the drive shaft tube 5 is rotating, the external chiller can stably circulate and deliver cooling water to the drive shaft tube 5.

[0036] Combination Figure 1 and Figure 4 As shown, the driving component includes a motor 7 and a transmission mechanism. The output end of the motor 7 is connected to the first end of the transmission shaft tube 5 through the transmission mechanism. By rotating the motor 7 in both directions, the transmission shaft tube 5 is driven to reciprocate.

[0037] In an optional embodiment, the motor 7 includes a stepper motor, which is capable of forward and reverse rotation and can control the rotation angle and speed, thereby driving the rotating arm 6 to reciprocate around the outer wall of the filter cartridge 4, and precisely controlling the speed so that the rotation speed of the material and the rotation speed of the rotating arm 6 have a sufficient speed difference, thereby generating sufficient suction at the arc surface 601 to clean the filter cartridge 4.

[0038] In a specific embodiment, the transmission mechanism includes a first pulley 71, a second pulley 72, and a transmission belt 73. The first pulley 71 is fixed to the output end of the motor 7, and the second pulley 72 is coaxially sleeved on the first end of the transmission shaft tube 5. The transmission belt 73 is connected to the first pulley 71 and the second pulley 72 respectively. The motor 7 drives the first pulley 71 to rotate. Under the transmission action of the transmission belt 73, the first pulley 71 drives the second pulley 72 to rotate through the transmission belt 73, thereby causing the transmission shaft tube 5 to rotate.

[0039] Furthermore, both the first pulley 71 and the second pulley 72 are synchronous pulleys, and the transmission belt 73 is a synchronous belt (i.e., a toothed belt), which enables the first pulley 71 and the second pulley 72 to rotate synchronously, avoiding slippage and thus accurately controlling the rotation angle of the rotating arm 6.

[0040] The working principle of this utility model is as follows: The material to be ground is continuously conveyed into the grinding barrel 3 through the feed pipe 11. The stirring drum 2 is driven by the output shaft and rotates inside the grinding barrel 3, causing the material and grinding media inside the grinding barrel 3 to rotate. Strong collision, friction and shearing action will be generated between the material and the grinding media, so that the material is ground into finer particles. The material in the grinding barrel 3 is filtered through the filter cylinder 4 and then discharged through the discharge pipe 12. The material that does not pass through the filter cylinder 4 continues to remain in the grinding barrel 3 for grinding. During the grinding process, the external chiller can deliver cooling water to the cooling jacket 301 through the first cooling water inlet pipe 31. Under the action of the delivery pressure, the cooling water in the cooling jacket 301 can be discharged through the first cooling water outlet pipe 32 and flow back to the external chiller for circulation, so that the cooling jacket 301 is always filled with circulating cooling water, thereby cooling and reducing the temperature of the material in the grinding barrel 3 and preventing the material from re-aggregating and clumping due to high temperature. When the material rotating at high speed in the grinding barrel 3 flows through the arc surface 601, it is affected by the convex arc surface 601 and the flow rate is relatively fast, which can form a low-pressure zone that generates suction on the filter cartridge 4. Under the action of low-pressure suction, the material attached to the outer wall of the filter cartridge 4 is drawn off, which plays the role of cleaning the filter cartridge 4. At the same time, the drive shaft tube 5 drives the rotating arm 6 to rotate back and forth along the outer wall of the filter cartridge 4, which can clean the outer wall of the filter cartridge 4 in a cycle, avoid the filter cartridge 4 from clogging, and maintain the filter cartridge 4 with high filtration efficiency. During the grinding process, an external chiller supplies cooling water to the inlet chamber 501. The cooling water in the inlet chamber 501 flows through the support arm 61 connected to it to the corresponding rotating arm 6, and then flows through the connecting ring 62 to the rotating arm 6 on the other side. Finally, it flows through the support arm 61 connected to the return chamber 502 to the return chamber 502. The cooling water in the return chamber 502 flows back to the external chiller for circulation. Cooling water is always circulating in the rotating arm 6, the support arm 61, and the connecting ring 62, which can cool the material from the inside and improve the cooling efficiency of the material.

[0041] In summary, by setting two rotating arms 6 on the outside of the filter cylinder 4 and providing an arc-shaped surface 601 on the side of the rotating arms 6 facing the filter cylinder 4, when the material rotating at high speed in the grinding barrel 3 flows through the arc-shaped surface 601, the flow rate is faster due to the influence of the protruding arc-shaped surface 601, which can form a low-pressure zone that generates suction on the filter cylinder 4. Under the action of low-pressure suction, the material attached to the outer wall of the filter cylinder 4 is drawn off, thus cleaning the filter cylinder 4. Meanwhile, both the rotating arm 6 and the support arm 61 are hollow structures. The second end of the rotating arm 6 is provided with a connecting ring 62. The second ends of both rotating arms 6 are connected to the connecting ring 62, and the two support arms 61 are respectively connected to the water inlet chamber 501 and the return chamber 502, so that the rotating arm 6, the support arm 61 and the connecting ring 62 form a pipeline for the circulation of coolant, which can cool the material from the inside, improve the cooling efficiency of the material, and prevent the material from re-aggregating and clumping due to high temperature.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A horizontal sand mill for paint production, characterized in that, Includes a machine base (1), on which an output shaft is provided, and a stirring cylinder (2) for stirring is fixed on the output shaft. A grinding barrel (3) is sleeved on the outside of the stirring barrel (2), and a filter cylinder (4) is coaxially fixed inside the grinding barrel (3). The filter cylinder (4) has two symmetrically arranged rotating arms (6) on its outer side. The rotating arms (6) have an arc-shaped surface (601) on the side facing the filter cylinder (4). When the material rotating at high speed in the grinding barrel (3) flows through the arc-shaped surface (601), it can form a low-pressure zone that generates suction on the filter cylinder (4). The filter cartridge (4) is provided with a drive shaft tube (5) inside. The grinding barrel (3) is provided with a drive component for driving the drive shaft tube (5) to rotate. The first ends of the two rotating arms (6) are connected to a support arm (61). The rotating arms (6) are connected to the drive shaft tube (5) through the support arm (61), so that the rotating arms (6) can rotate along the outer periphery of the filter cartridge (4).

2. The horizontal sand mill for paint production according to claim 1, characterized in that: The first end of the drive shaft tube (5) extends to the outside of the grinding barrel (3), the output end of the drive component is connected to the first end of the drive shaft tube (5) and can drive the drive shaft tube (5) to rotate, the second end of the drive shaft tube (5) passes through the filter cartridge (4) and extends into the grinding barrel (3), and the support arm (61) is connected to the second end of the drive shaft tube (5).

3. The horizontal sand mill for paint production according to claim 1, characterized in that: The transmission shaft tube (5) is provided with an inlet chamber (501) and a return chamber (502) inside. The inlet chamber (501) and the return chamber (502) are connected to an external chiller. The rotating arm (6) and the support arm (61) are both hollow structures. The second end of the rotating arm (6) is provided with a connecting ring (62). The second ends of the two rotating arms (6) are connected to the connecting ring (62), and the two support arms (61) are respectively connected to the inlet chamber (501) and the return chamber (502), so that the rotating arm (6), the support arm (61) and the connecting ring (62) form a pipeline for the circulation of coolant.

4. The horizontal sand mill for paint production according to claim 3, characterized in that: The first end face of the drive shaft tube (5) is fixed with a second cooling water inlet pipe (51) and a second cooling water outlet pipe (52). The second cooling water inlet pipe (51) is connected to the water inlet chamber (501), and the second cooling water outlet pipe (52) is connected to the return chamber (502). The second cooling water inlet pipe (51) and the second cooling water outlet pipe (52) are connected to an external chiller through a hose.

5. The horizontal sand mill for paint production according to claim 2, characterized in that: The driving component includes a motor (7) and a transmission mechanism. The output end of the motor (7) is connected to the first end of the transmission shaft tube (5) through the transmission mechanism, and can drive the transmission shaft tube (5) to reciprocate.

6. The horizontal sand mill for paint production according to claim 1, characterized in that: The grinding barrel (3) is connected to a feed pipe (11) and a discharge pipe (12) at both ends, and the discharge pipe (12) extends into the filter cylinder (4).

7. The horizontal sand mill for paint production according to claim 5, characterized in that: The transmission mechanism includes a first pulley (71), a second pulley (72), and a transmission belt (73). The first pulley (71) is fixed to the output end of the motor (7), the second pulley (72) is coaxially sleeved on the first end of the transmission shaft tube (5), and the transmission belt (73) is connected to the first pulley (71) and the second pulley (72) respectively.

8. The horizontal sand mill for paint production according to claim 7, characterized in that: The first pulley (71) and the second pulley (72) are both synchronous pulleys, and the transmission belt (73) is a synchronous belt.

9. The horizontal sand mill for paint production according to claim 1, characterized in that: The stirring cylinder (2) has a connecting groove (201) at one end near the filter cylinder (4).

10. The horizontal sand mill for paint production according to claim 1, characterized in that: The grinding barrel (3) has a cooling jacket (301) on its side wall for the flow of coolant. The two ends of the grinding barrel (3) are respectively connected to a first cooling water inlet pipe (31) and a first cooling water outlet pipe (32) that communicate with the cooling jacket (301). The first cooling water inlet pipe (31) and the first cooling water outlet pipe (32) are connected to an external chiller.

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