A cleaning device for the jacket of a sand mill

Abstract

This utility model relates to a cleaning device for the jacket of a sand mill, including a first jacketed grinding cylinder, a third jacketed grinding cylinder, a drive shaft assembly, and a base. A first elbow is installed on one side of the first jacketed grinding cylinder, and a second elbow is installed on the other side. A tee connector is installed on the first elbow, with a ball valve installed at the air inlet end and an air pipe connector installed on the ball valve. A cooling water inlet quick connector is installed at the water inlet end of the tee connector. A fifth elbow is installed on one side of the third jacketed grinding cylinder, and a sixth elbow is installed on the other side. The fifth elbow and the second elbow are connected by a cooling water connecting hose. A cooling water outlet quick connector is installed on the sixth elbow. The third jacketed grinding cylinder is mounted on the drive shaft assembly, which is mounted on the base. This utility model can conveniently and effectively drain the remaining cooling water inside the jacket, solving the problem of incomplete drainage of cooling water from the sand mill jacket.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically a cleaning device for the jacket of a sand mill. Background Technology

[0002] Sand mills are the most commonly used and effective grinding equipment. They utilize the friction, compression, and collision between grinding media to disperse agglomerated materials. Sand mills not only disperse materials but also have highly efficient ultrafine grinding capabilities, making them widely used in the grinding and dispersion of products in the food and chemical industries, including coatings, pigments, paints, inks, adhesives, cosmetics, papermaking, food, insulating materials, and magnetic materials.

[0003] Different products require different temperatures to ensure grinding quality in sand mills, necessitating the installation of a cooling jacket around the grinding cylinder to maintain the product's temperature. When the sand mill is not in operation, the cooling water in the jacket needs to be drained. However, conventional natural drainage methods often fail to completely remove all the cooling water, leaving a significant amount remaining inside the jacket. This residual cooling water is prone to freezing in winter or low-temperature environments. The expansion of the frozen water can potentially crack equipment components (such as the ceramic inner cylinder of the sand mill), causing damage. Failure to drain the residual water promptly necessitates additional handling of the freezing issue after shutdown in winter, extending maintenance time and increasing labor costs.

[0004] Therefore, providing a cleaning device that can conveniently and effectively drain the remaining cooling water in the jacket would have significant practical importance and application value. The cleaning device for the jacket of a sand mill described in this utility model was developed to solve the problem of the cooling water in the jacket being difficult to drain completely. Summary of the Invention

[0005] The purpose of this utility model is to address the above-mentioned shortcomings by providing a cleaning device for the jacket of a sand mill, which can conveniently and effectively drain the remaining cooling water inside the jacket, solving the problem that the cooling water inside the jacket of the sand mill cannot be completely drained. This provides a reliable guarantee for the efficient operation of the sand mill and reduces maintenance time, thereby extending the service life of the equipment and reducing the cost of use and maintenance.

[0006] To achieve the above objectives, a cleaning device for the jacket of a sand mill is designed, comprising a jacketed grinding cylinder 4, a jacketed grinding cylinder 3 14, a drive shaft assembly 19, and a base 20. The jacketed grinding cylinder 4 and the jacketed grinding cylinder 3 14 are connected as one unit by fasteners. An elbow 3 is installed on one side of the jacketed grinding cylinder 4, and an elbow 7 is installed on the other side. A tee connector 5 is installed on the elbow 3, and a ball valve 2 is installed at the air inlet end of the tee connector 5. An air pipe connector 1 is installed on the ball valve 2 for connecting compressed air. A cooling water inlet quick connector 6 is installed at the water inlet end of the connector 5. The cooling water inlet quick connector 6 is used to connect cooling water. An elbow 5 13 is installed on one side of the jacketed grinding cylinder 3 14, and an elbow 6 18 is installed on the other side of the jacketed grinding cylinder 3 14. The elbow 5 13 and the elbow 2 7 are connected by a cooling water connecting hose. A cooling water outlet quick connector 15 is installed on the elbow 6 18. The cooling water outlet quick connector 15 is used to connect a drain hose. The jacketed grinding cylinder 3 14 is mounted on the drive shaft assembly 19, and the drive shaft assembly 19 is mounted on the base 20.

[0007] Furthermore, at least one grinding cylinder is installed between the jacketed grinding cylinder 4 and the jacketed grinding cylinder 14. Adjacent grinding cylinders are connected as one unit by fasteners, and adjacent grinding cylinders are connected by cooling water connecting hoses so that the cooling water in adjacent grinding cylinders can be connected.

[0008] Furthermore, a jacketed grinding cylinder 10 is installed between the jacketed grinding cylinder 1-4 and the jacketed grinding cylinder 3-14. One side of the jacketed grinding cylinder 2-10 is connected to the jacketed grinding cylinder 1-4 via fastener 1-16, and the other side of the jacketed grinding cylinder 2-10 is connected to the jacketed grinding cylinder 3-14 via fastener 2-17. An elbow 3-9 and an elbow 4-11 are installed on one side of the jacketed grinding cylinder 2-10. A cooling water connecting hose 1-8 is connected between elbow 3-9 and elbow 2-7, which connects the cooling water in the jacketed grinding cylinder 1-4 and the jacketed grinding cylinder 2-10. A cooling water connecting hose 2-12 is connected between elbow 4-11 and elbow 5-13, which connects the cooling water in the jacketed grinding cylinder 2-10 and the jacketed grinding cylinder 3-14.

[0009] Furthermore, elbows 1-3, 2-7, 3-9, 4-11, 5-13, and 6-18 all adopt 90° elbows, which can better remove the "stagnant water" remaining at the elbows.

[0010] Furthermore, both the cooling water connecting hose 8 and the cooling water connecting hose 12 are U-shaped hoses, which makes the cooling water in adjacent grinding cylinders more smoothly connected, thereby effectively cleaning the residual cooling water in the sand mill jacket.

[0011] Compared with the prior art, this utility model provides a cleaning device for the jacket of a sand mill, which can effectively clean the residual cooling water inside the jacket of the sand mill when the equipment is stopped. Furthermore, cleaning only requires the connection of compressed air, without the need for other auxiliary tools, allowing for convenient and quick cleaning of the residual cooling liquid inside the jacket. In addition, this utility model can quickly clean the cooling liquid inside the grinding cylinder jacket, avoiding the following hazards: (1) Accelerated corrosion: Residual coolant will cause electrochemical corrosion of the inner wall of the jacket (especially carbon steel material), and pitting corrosion is likely to occur at the weld of the guide bar; (2) Microbial growth: Algae / bacteria will grow in stagnant liquids, forming biofilms that block the flow channels (common in ethylene glycol aqueous solution cooling systems). (3) Winter freezing cracks: residual water freezes and expands at low temperatures, causing jacket deformation or weld cracking (especially common in northern regions). (4) The heat transfer efficiency decreases, and the residual liquid evaporates to form a scale layer (CaCO3 / MgSiO3), which increases the thermal resistance (1mm scale ≈ 12% energy loss). (5) Increased energy consumption: scale buildup requires the pump pressure to be increased by 0.2-0.5 MPa to maintain the original flow rate, resulting in an annual increase in electricity consumption of 15-30%. In summary, this utility model can conveniently and effectively drain the remaining cooling water in the jacket, solving the problem that the cooling water in the jacket of the sand mill cannot be completely drained. It provides a reliable guarantee for the efficient operation of the sand mill and reduces maintenance time, thereby extending the service life of the equipment and reducing the cost of use and maintenance. In turn, it meets the needs of customers to make full use of the efficient production capacity of the sand mill, maximize production efficiency and economic benefits, and is worthy of promotion and application. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial enlarged view of the compressed air inlet of this utility model; Figure 4 This is a partial enlarged view of the residual liquid discharge port of this utility model; In the diagram: 1. Air pipe connector; 2. Ball valve; 3. Elbow 1; 4. Grinding cylinder 1 with jacket; 5. T-connector; 6. Cooling water inlet quick connector; 7. Elbow 2; 8. Cooling water connecting hose 1; 9. Elbow 3; 10. Grinding cylinder 2 with jacket; 11. Elbow 4; 12. Cooling water connecting hose 2; 13. Elbow 5; 14. Grinding cylinder 3 with jacket; 15. Cooling water outlet quick connector; 16. Fastener 1; 17. Fastener 2; 18. Elbow 6; 19. Drive shaft assembly; 20. Base. Detailed Implementation

[0013] As attached Figure 1 To be continued Figure 4 As shown, this utility model provides a cleaning device for the jacket of a sand mill, including a jacketed grinding cylinder 4, a jacketed grinding cylinder 3 14, a drive shaft assembly 19, and a base 20. The jacketed grinding cylinder 4 and the jacketed grinding cylinder 3 14 are connected as one unit by fasteners. An elbow 3 is installed on one side of the jacketed grinding cylinder 4, and an elbow 7 is installed on the other side. A tee connector 5 is installed on the elbow 3. A ball valve 2 is installed at the air inlet end of the tee connector 5. An air pipe connector 1 is installed on the ball valve 2 for connecting compressed air. The inlet end of the tee connector 5 is equipped with a cooling water inlet quick connector 6, which is used to connect cooling water. One side of the jacketed grinding cylinder 3 14 is equipped with elbow 5 13, and the other side of the jacketed grinding cylinder 3 14 is equipped with elbow 6 18. Elbow 5 13 and elbow 2 7 are connected by a cooling water connecting hose. Elbow 6 18 is equipped with a cooling water outlet quick connector 15, which is used to connect a drain hose. The jacketed grinding cylinder 3 14 is mounted on the drive shaft assembly 19, and the drive shaft assembly 19 is mounted on the base 20.

[0014] At least one grinding cylinder is installed between the jacketed grinding cylinder 14 and the jacketed grinding cylinder 34. Adjacent grinding cylinders are connected as a single unit by fasteners, and their interiors are connected by a cooling water hose to allow for water exchange. Specifically, a jacketed grinding cylinder 20 is installed between the jacketed grinding cylinder 14 and the jacketed grinding cylinder 34. One side of the jacketed grinding cylinder 20 is connected to the jacketed grinding cylinder 14 by fastener 16, and the other side is connected to the jacketed grinding cylinder 34 by fastener 27. An elbow 3 9 and an elbow 4 11 are installed on one side of the jacketed grinding cylinder 20. A cooling water hose 18 connects the elbow 3 9 and the elbow 2 7, allowing the jacketed grinding cylinder 14 and the jacketed grinding cylinder 34 to communicate with each other. The cooling water in the grinding cylinder 210 is connected. A cooling water connecting hose 212 connects the elbow 41 and elbow 513. The cooling water connecting hose 212 connects the cooling water in the jacketed grinding cylinder 210 and the jacketed grinding cylinder 314. Elbows 13, 27, 39, 41, 513 and 618 are all 90° elbows, which can better remove the "stagnant water" remaining at the elbows. Cooling water connecting hose 18 and cooling water connecting hose 212 are both U-shaped hoses, which makes the cooling water in adjacent grinding cylinders more smoothly, thereby effectively cleaning the cooling water remaining in the jacket of the sand mill.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: A cleaning device for the jacket of a sand mill includes an air pipe connector 1, a ball valve 2, an elbow 1 3, a jacketed grinding cylinder 1 4, a tee connector 5, a cooling water inlet quick connector 6, an elbow 2 7, a cooling water connecting hose 1 8, an elbow 3 9, a jacketed grinding cylinder 2 10, an elbow 4 11, a cooling water connecting hose 2 12, an elbow 5 13, a jacketed grinding cylinder 3 14, a cooling water outlet quick connector 15, a fastener 1 16, a fastener 2 17, an elbow 6 18, a drive shaft assembly 19, and a base 20.

[0016] Elbow 1 (3) is installed on the jacketed grinding cylinder 1 (4). T-connector 5 is installed on elbow 1 (3). Ball valve 2 is installed on t-connector 5. Air pipe connector 1 is installed on ball valve 2. Air pipe connector 1 is used to connect to a compressed air source. Cooling water inlet quick connector 6 is installed on t-connector 5. Cooling water inlet quick connector 6 is used to connect to the customer's cooling water. The jacketed grinding cylinder 2 (10) is connected to the jacketed grinding cylinder 1 (4) via fastener 1 (16). Elbow 2 (7) is installed on the jacketed grinding cylinder 1 (4). Elbow 3 (9) is installed on the jacketed grinding cylinder 2 (10). Cooling water connecting hose 1 (8) is installed at one end on elbow 2 (7) and at the other end on elbow 3 (9), allowing the cooling water in the jacketed grinding cylinder 1 (4) to connect with the cooling water in the jacketed grinding cylinder 2 (10). The jacketed grinding cylinder 3 (14) is connected to the jacketed grinding cylinder 2 (10) via fastener 2 (17). 10 are connected together. Elbow 4 11 is installed on the jacketed grinding cylinder 2 10. Elbow 5 13 is installed on the jacketed grinding cylinder 3 14. One end of the cooling water connecting hose 2 12 is installed on elbow 4 11 and the other end is installed on elbow 5 13, so that the cooling water in the jacketed grinding cylinder 2 10 can be connected to the cooling water in the jacketed grinding cylinder 3 14. In this way, the cooling water in the jacketed grinding cylinder 1 4, the jacketed grinding cylinder 2 10 and the jacketed grinding cylinder 3 14 can be connected to each other. Elbow 6 18 is installed on the jacketed grinding cylinder 3 14. Cooling water outlet quick connector 15 is installed on elbow 6 18. Drain hose is connected to the cooling water outlet quick connector 15. Grinding cylinder 14 is installed on drive shaft assembly 19. Drive shaft assembly 19 is installed on base 20. The above components constitute a cleaning device for the jacket of a sand mill. The working principle of the cleaning device for the sand mill jacket is as follows: compressed air is connected to the air pipe connector, and the pressure of the compressed air is used to quickly discharge the residual cooling liquid and other impurities in the jacket through the drain hose connected to the cooling water outlet quick connector, so as to achieve the purpose of cleaning the grinding mill jacket.

[0017] Compared to natural drainage, this invention provides a sand mill with a jacket cleaning device. By adding this device to the jacket, cleaning the sand mill becomes simple and quick, requiring only one person to complete the task easily and rapidly. No complex equipment is needed; only an air hose and suitable connectors are required. Compressed air is a common utility resource available in most factory workshops, and its direct use incurs almost no additional material costs. Compared to traditional sand mills without this jacket cleaning device, this invention allows for simple and quick cleaning of residual coolant and impurities inside the jacket when the equipment is stopped. The high pressure and fast flow rate of compressed air rapidly blow most of the free and flowable residual liquid out of the jacket. The entire process typically takes only a few minutes, significantly reducing preparation time for equipment maintenance or winter shutdowns. Compared to natural drainage, compressed air is better at removing stagnant water remaining in low-lying areas and bends of the jacket, providing a much better cleaning effect than simply relying on gravity drainage. The absence of residual coolant inside the jacket not only prevents the jacket from freezing and expanding at low temperatures in winter, thus avoiding deformation and cracking of the welds, but also effectively inhibits the formation of scale, which would otherwise increase energy consumption.

[0018] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0019] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A cleaning device for the jacket of a sand mill, comprising a first (4) grinding cylinder with a jacket, a third (14) grinding cylinder with a jacket, a drive shaft assembly (19), and a base (20), characterized in that: The first (4) and the third (14) of the jacketed grinding cylinder are connected as one unit by fasteners. An elbow (3) is installed on one side of the first (4) of the jacketed grinding cylinder, and an elbow (7) is installed on the other side of the first (4) of the jacketed grinding cylinder. A three-way connector (5) is installed on the elbow (3). A ball valve (2) is installed on the air inlet end of the three-way connector (5). An air pipe connector (1) is installed on the ball valve (2). The air pipe connector (1) is used to connect compressed air. A cooling water inlet quick connector (6) is installed on the water inlet end of the three-way connector (5). The cooling water inlet... The quick connector (6) is used to connect to cooling water. Elbow five (13) is installed on one side of the jacketed grinding cylinder three (14), and elbow six (18) is installed on the other side of the jacketed grinding cylinder three (14). Elbow five (13) and elbow two (7) are connected by a cooling water connecting hose. A cooling water outlet quick connector (15) is installed on elbow six (18). The cooling water outlet quick connector (15) is used to connect to a drain hose. The jacketed grinding cylinder three (14) is installed on the drive shaft assembly (19), and the drive shaft assembly (19) is installed on the base (20).

2. The cleaning device for the sand mill jacket as described in claim 1, characterized in that: At least one grinding cylinder is installed between the first (4) and the third (14) with a jacket. The adjacent grinding cylinders are connected as one unit by fasteners, and the adjacent grinding cylinders are connected by a cooling water connecting hose so that the cooling water in the adjacent grinding cylinders can be connected.

3. The cleaning device for the sand mill jacket as described in claim 1, characterized in that: A second jacketed grinding cylinder (10) is installed between the first jacketed grinding cylinder (4) and the third jacketed grinding cylinder (14). One side of the second jacketed grinding cylinder (10) is connected to the first jacketed grinding cylinder (4) by a fastener (16), and the other side of the second jacketed grinding cylinder (10) is connected to the third jacketed grinding cylinder (14) by a fastener (17). An elbow (9) is installed on one side of the second jacketed grinding cylinder (10). A fourth elbow (11) is installed on the upper side. A cooling water connecting hose (8) is connected between the third elbow (9) and the second elbow (7). The first cooling water connecting hose (8) connects the cooling water in the first jacketed grinding cylinder (4) and the second jacketed grinding cylinder (10). A second cooling water connecting hose (12) is connected between the fourth elbow (11) and the fifth elbow (13). The second cooling water connecting hose (12) connects the cooling water in the second jacketed grinding cylinder (10) and the third jacketed grinding cylinder (14).

4. The cleaning device for the sand mill jacket as described in claim 3, characterized in that: The elbows 1 (3), 2 (7), 3 (9), 4 (11), 5 (13) and 6 (18) are all 90° elbows.

5. The cleaning device for the sand mill jacket as described in claim 3, characterized in that: Both the first (8) and the second (12) cooling water connection hoses are U-shaped hoses.

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