Horizontal sand mill for processing water-based paint

Abstract

The utility model discloses a horizontal sand mill for processing water-based paint. The horizontal sand mill comprises a rack and a grinding cylinder mounted at the top of the rack, a feed port is formed in the top of the right end of the grinding cylinder, and a discharge port is formed in the bottom of the left end of the grinding cylinder; a grinding main shaft is arranged in the grinding cylinder, dispersers are installed on the grinding main shaft at intervals, and a cooling assembly is further arranged on the outer side of the grinding cylinder. The two cooling assemblies are symmetrically arranged, and each cooling assembly comprises a cooling jacket and a cooling coil; the inner side of the cooling coil pipe is attached to the side wall of the grinding cylinder, the contact area of the cooling coil pipe and the grinding cylinder is increased, heat generated by the grinding cylinder can be rapidly taken away, and the cooling efficiency is improved; compared with a traditional spiral winding cooling pipe, the cooling coil pipe is independently arranged, cylinder supports at the two ends of the grinding cylinder do not need to be disassembled after damage, and replacement can be achieved only by disassembling the cooling jacket.

Description

Technical Field

[0001] This utility model relates to the field of sand mills, specifically a horizontal sand mill for processing water-based coatings. Background Technology

[0002] Any coating that uses water as a solvent or dispersion medium can be called a water-based coating. Based on the type of binder in the coating, water-based coatings are divided into two main categories: natural water-based coatings made from natural substances or minerals, and petrochemical water-based coatings made from synthetic resins. During the production process of water-based coatings, grinding is required, necessitating the use of a horizontal sand mill for water-based coatings.

[0003] For example, patent CN222855584U discloses a cooling mechanism for a horizontal sand mill, relating to the field of cooling mechanism technology. It includes a machine base with a mounting plate fixedly installed on its top surface. This invention effectively removes heat from the grinding cylinder by introducing cooling water into the cooling pipes, ensuring temperature control during the grinding process and preventing excessive temperature from affecting the grinding effect and product quality. Furthermore, the inclusion of a filter screen filters the water entering the cooling pipes, preventing large particles and foreign objects from entering and reducing the possibility of blockage and damage, thereby extending the service life of the cooling pipes. Simultaneously, the convenient filter screen replacement mechanism allows operators to easily replace the filter screen, avoiding complex operations, improving maintenance efficiency, and reducing equipment downtime. When the filter screen is blocked or damaged, it can be quickly replaced, ensuring the continuous and stable operation of the cooling system and preventing equipment failure or downtime due to cooling ineffectiveness.

[0004] The aforementioned patent uses a cooling pipe fitted on the surface of the grinding cylinder to cool the grinding cylinder; however, the disadvantage of the aforementioned patent is that disassembly and repair are very inconvenient after the cooling pipe is damaged.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a horizontal sand mill for processing water-based coatings, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A horizontal sand mill for water-based coating processing includes a frame and a grinding cylinder mounted on top of the frame. A feed inlet is located at the top right end of the grinding cylinder, and a discharge outlet is located at the bottom left end. A grinding spindle is installed inside the grinding cylinder, with dispersers spaced apart on it. A cooling assembly is also provided on the outside of the grinding cylinder. Two sets of cooling assemblies are symmetrically arranged. Each cooling assembly includes a cooling jacket and a cooling coil. The cooling jacket is an arc-shaped shell. The cooling jackets of the two sets of cooling assemblies are connected to each other to cover the side of the grinding cylinder. The inner side of the cooling coil is in contact with the side wall of the grinding cylinder. Insulation cotton is filled between the outer side of the cooling coil and the inner side of the cooling jacket. One end of the cooling coil is connected to a cold water inlet pipe, and the other end is connected to a hot water outlet pipe. The cold water inlet pipe and the hot water outlet pipe pass through the cooling jacket. The inner side of the cooling coil is arc-shaped and fits against the side wall of the grinding cylinder.

[0009] Furthermore, both ends of the grinding spindle extend out of both ends of the grinding cylinder, and the grinding spindle is sealed to the end of the grinding cylinder by a mechanical seal.

[0010] Furthermore, both ends of the grinding cylinder are fixedly mounted on the top of the frame via cylinder supports.

[0011] Furthermore, a bearing mounting plate is fixedly installed on the outer side of the cylindrical support, and a bearing seat is installed at the center of the bearing mounting plate. The grinding spindle is rotatably connected to the bearing seat through the bearing and passes through the bearing seat.

[0012] Furthermore, a driving component is provided on one side of the grinding cylinder; the driving component includes a drive motor and a reducer; the drive motor is fixedly installed on the side of the reducer and drives and connects to the reducer; the reducer is fixedly installed on the top of the drive bracket, the drive bracket is fixedly installed on the top of the frame, and the output shaft of the reducer drives and connects to the grinding spindle.

[0013] Furthermore, the drive component is covered with a protective shell.

[0014] Furthermore, the cooling jacket includes an arc-shaped sidewall, a fan-ring end plate, and a connecting plate; the left and right ends of the arc-shaped sidewall are provided with fan-ring end plates, and the upper and lower ends of the arc-shaped sidewall are provided with connecting plates; when two cooling jackets are connected, the connecting plates of the two cooling jackets are fixedly connected by bolts.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The inner side of the cooling coil is attached to the side wall of the grinding cylinder, which increases the contact area with the grinding cylinder and can quickly remove the heat generated by the grinding cylinder, thus improving the cooling efficiency.

[0017] Insulating cotton is filled between the cooling jacket and the cooling coil to reduce heat exchange between them, so that more cold water in the cooling coil can be used to cool the grinding cylinder, thus improving the cooling effect.

[0018] Maintenance is convenient. Compared with the traditional spiral-wound cooling tube, the cooling coil is set independently. After damage, there is no need to remove the cylinder supports at both ends of the grinding cylinder. It can be replaced simply by removing the cooling jacket. Attached Figure Description

[0019] Figure 1 A schematic diagram of a horizontal sand mill for processing water-based coatings.

[0020] Figure 2 This is a front view of a horizontal sand mill used for processing water-based coatings.

[0021] Figure 3 This is a side view of a horizontal sand mill used for processing water-based coatings.

[0022] Figure 4 This is a top view of a horizontal sand mill used for processing water-based coatings.

[0023] Figure 5 for Figure 3 Sectional view along the AA direction.

[0024] Figure 6 A schematic diagram of the structure of a horizontal sand mill for water-based coating processing after the protective shell has been removed, from another angle.

[0025] Figure 7 This is a schematic diagram of the structure of two sets of cooling components in a horizontal sand mill for processing water-based coatings.

[0026] Figure 8 An exploded view of the cooling components in a horizontal sand mill used for processing water-based coatings. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] Please see Figure 1-8A horizontal sand mill for processing water-based coatings includes a frame 1 and a grinding cylinder 2 mounted on top of the frame 1.

[0029] The grinding cylinder 2 has a feed inlet 201 at the top right end and a discharge outlet 202 at the bottom left end; a grinding spindle 203 is installed inside the grinding cylinder 2, and dispersers 204 are installed at intervals on the grinding spindle 203.

[0030] By adding coating material into the grinding cylinder 2 through the feed inlet 201, the disperser 204 on the grinding spindle 203 drives the grinding media (such as zirconia beads and glass beads) in the grinding cylinder 2 to move, causing the material particles to collide, rub and shear with the grinding media, thereby achieving the effect of crushing and refining.

[0031] Both ends of the grinding spindle 203 extend out of both ends of the grinding cylinder 2, and the grinding spindle 203 is sealed to the end of the grinding cylinder 2 through a mechanical seal 205.

[0032] Meanwhile, in this solution, both ends of the grinding cylinder 2 are fixedly installed on the top of the frame 1 by the cylinder bracket 206;

[0033] Meanwhile, a bearing mounting plate 207 is fixedly installed on the outer side of the cylindrical support 206, and a bearing seat 208 is installed at the center of the bearing mounting plate 207. The grinding spindle 203 is rotatably connected to the bearing seat 208 through the bearing and passes through the bearing seat 208.

[0034] A driving component 4 is also provided on one side of the grinding cylinder 2; the driving component 4 includes a driving motor 401 and a reducer 402; the driving motor 401 is fixedly installed on the side of the reducer 402 and drives the reducer 402; the reducer 402 is fixedly installed on the top of the driving bracket 403, the driving bracket 403 is fixedly installed on the top of the frame 1, and the output shaft of the reducer 402 drives the grinding spindle 203.

[0035] Meanwhile, in this solution, the outer cover of the drive component 4 is provided with a protective shell 404;

[0036] A cooling assembly 3 is also provided on the outer side of the grinding cylinder 2; two sets of cooling assemblies 3 are symmetrically arranged.

[0037] The cooling assembly 3 includes a cooling jacket 301 and a cooling coil 302. The cooling jacket 301 is an arc-shaped shell. The cooling jackets 301 of the two sets of cooling assemblies 3 are connected to each other to cover the side of the grinding cylinder 2. The inner side of the cooling coil 302 is attached to the side wall of the grinding cylinder 2.

[0038] In this scheme, heat insulation cotton 308 is also filled between the outer side of the cooling coil 302 and the inner side of the cooling jacket 301, thereby reducing the heat exchange between the cooling jacket 301 and the cooling coil 302, so that most of the cold water in the cooling coil 302 is used to cool the grinding cylinder 2.

[0039] Specifically, the cooling jacket 301 includes an arc-shaped sidewall 303, a fan ring end plate 304, and a connecting plate 305; the arc-shaped sidewall 303 is provided with fan ring end plates 304 at its left and right ends, and the arc-shaped sidewall 303 is provided with connecting plates 305 at its upper and lower ends; when two cooling jackets 301 are connected, the connecting plates 305 of the two cooling jackets 301 are fixedly connected by bolts.

[0040] In this design, one end of the cooling coil 302 is connected to a cold water inlet pipe 306, and the other end is connected to a hot water outlet pipe 307; the cold water inlet pipe 306 and the hot water outlet pipe 307 respectively pass through the cooling jacket 301;

[0041] In this plan, such as Figure 7-8 As shown, the inner side of the cooling coil 302 is arc-shaped and fits the side wall of the grinding cylinder 2. This arrangement increases the contact area between the cooling coil 302 and the grinding cylinder 2, resulting in higher heat exchange efficiency.

[0042] When this invention is put into use, coating is added into the grinding cylinder 2 through the feed inlet 201. The disperser 204 on the grinding spindle 203 drives the grinding media inside the grinding cylinder 2 to move, causing the material particles to collide, rub, and shear with the grinding media, achieving the effect of crushing and refining. The cold water inlet pipe 306 and hot water outlet pipe 307 of the cooling coil 302 are respectively connected to the cold water outlet and return port of an external chiller (not shown in the figure). Cooling water can enter the cooling coil 302 through the cold water inlet pipe 306, which can carry away the heat of the grinding cylinder 2. Then the cooling water is discharged from the hot water outlet pipe 307, completing the cooling of the grinding cylinder 2.

[0043] Compared to the traditional cooling pipes that are spirally wound around the grinding cylinder 2, the cooling component 3 in this solution is much more convenient to maintain and replace. When the cooling coil 302 is damaged, there is no need to remove the cylinder supports 206 at both ends of the grinding cylinder 2. The replacement can be achieved simply by disassembling the two connected cooling jackets 301.

[0044] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A horizontal sand mill for processing water-based coatings, comprising a frame and a grinding cylinder mounted on top of the frame; a feed inlet is provided at the top right end of the grinding cylinder, and a discharge outlet is provided at the bottom left end of the grinding cylinder; a grinding spindle is provided inside the grinding cylinder, wherein dispersers are installed at intervals on the grinding spindle; characterized in that, A cooling assembly is also provided on the outside of the grinding cylinder; two sets of cooling assemblies are symmetrically arranged. The cooling assembly includes a cooling jacket and a cooling coil. The cooling jacket is an arc-shaped shell. The cooling jackets of the two sets of cooling assemblies are connected to each other to cover the side of the grinding cylinder. The inner side of the cooling coil is in contact with the side wall of the grinding cylinder. Insulation cotton is also filled between the outer side of the cooling coil and the inner side of the cooling jacket. One end of the cooling coil is connected to a cold water inlet pipe, and the other end is connected to a hot water outlet pipe. The cold water inlet pipe and the hot water outlet pipe pass through the cooling jacket respectively. The inner side of the cooling coil is arc-shaped and in contact with the side wall of the grinding cylinder.

2. The horizontal sand mill for water-based coating processing according to claim 1, characterized in that, Both ends of the grinding spindle extend out of both ends of the grinding cylinder, and the grinding spindle is sealed to the end of the grinding cylinder by a mechanical seal.

3. The horizontal sand mill for water-based coating processing according to claim 1, characterized in that, The two ends of the grinding cylinder are fixedly mounted on the top of the frame by cylinder brackets.

4. The horizontal sand mill for water-based coating processing according to claim 3, characterized in that, A bearing mounting plate is also fixedly installed on the outer side of the cylinder support. A bearing seat is installed at the center of the bearing mounting plate. The grinding spindle is rotatably connected to the bearing seat through the bearing and passes through the bearing seat.

5. The horizontal sand mill for water-based coating processing according to claim 1, characterized in that, A driving component is also provided on one side of the grinding cylinder; the driving component includes a drive motor and a reducer; the drive motor is fixedly installed on the side of the reducer and is driven and connected to the reducer; the reducer is fixedly installed on the top of the drive bracket, the drive bracket is fixedly installed on the top of the frame, and the output shaft of the reducer is driven and connected to the grinding spindle.

6. The horizontal sand mill for water-based coating processing according to claim 5, characterized in that, The drive component is covered by a protective shell.

7. The horizontal sand mill for water-based coating processing according to claim 1, characterized in that, The cooling jacket includes an arc-shaped sidewall, a fan-shaped end plate, and a connecting plate; the left and right ends of the arc-shaped sidewall are provided with fan-shaped end plates, and the upper and lower ends of the arc-shaped sidewall are provided with connecting plates; when two cooling jackets are connected, the connecting plates of the two cooling jackets are fixedly connected by bolts.

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