Wet grinding and mixing device for middling powder

Abstract

The utility model discloses a middling powder wet-type grinding and mixing device, which belongs to the technical field of mineral powder grinding and comprises a base plate, a grinding cylinder for grinding is rotatably mounted on the base plate, a cooling cavity is formed in the grinding cylinder, lantern rings are rotatably mounted on two end surfaces of the grinding cylinder and fixed on the base plate, and a plurality of grinding grooves are formed in the base plate. Water grooves distributed in the circumferential direction of the lantern ring are formed in the lantern ring, the lantern ring is further provided with through holes and water inlet and outlet holes which are communicated with the water grooves, the water inlet and outlet holes are formed in the two end faces of the grinding cylinder, and the through holes face the water inlet and outlet holes. When the grinding cylinder rotates, the through hole can be communicated with the water inlet and outlet hole; the middling powder wet-type grinding and mixing device rapidly leads out heat generated by grinding, the temperature rise in the cylinder is inhibited from the source, and the problem that slurry moisture is rapidly dried due to high temperature of a traditional ball mill is solved.

Description

Technical Field

[0001] This utility model specifically relates to a wet grinding and mixing device for medium mineral powder, belonging to the field of mineral powder grinding technology. Background Technology

[0002] In many industrial sectors such as metallurgy, chemical industry, and building materials, middlings minerals are an important intermediate raw material, and their processing quality directly affects the performance and quality of subsequent products. To meet the requirements of industrial production regarding the fineness, uniformity, and activity of middlings minerals, wet grinding technology is widely used in the deep processing of middlings minerals due to its advantages such as effectively reducing dust pollution, improving grinding efficiency, and enhancing product performance.

[0003] Currently, ball mills are one of the most commonly used pieces of equipment in wet grinding of medium-sized minerals. They primarily utilize the rotation, collision, and grinding action of grinding media (such as steel balls or steel segments) within the mill cylinder to crush and grind the medium-sized minerals, while simultaneously adding water to form a slurry, achieving the wet grinding effect. However, existing ball mills have significant technical shortcomings in actual operation: the intense collisions and friction between the grinding media and the medium-sized minerals, and between the grinding media and the mill cylinder, generate substantial amounts of frictional and impact heat. The existing ball mill design lacks an effective cooling mechanism, failing to promptly dissipate or remove this heat.

[0004] As the grinding process continues, the temperature inside the ball mill cylinder rises steadily. In wet grinding scenarios, the higher temperature causes the water in the slurry to evaporate and dry rapidly, making it difficult to maintain the slurry's humidity within a suitable range. This phenomenon leads to a series of adverse consequences: on the one hand, rapid water loss increases the adhesion between medium mineral particles, making them prone to agglomeration, hindering further crushing and grinding of the medium mineral particles by the grinding media, and reducing grinding efficiency; on the other hand, unstable humidity reduces the grinding uniformity of the medium mineral particles, resulting in uneven particle size distribution, which seriously affects subsequent processing of the medium mineral particles (such as mixing, molding, etc.) and the quality of the final product. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a wet grinding and mixing device for medium mineral powder.

[0006] A wet grinding and mixing device for medium mineral powder includes a base plate, on which a grinding cylinder for grinding is rotatably mounted. The grinding cylinder has a cooling chamber inside. Both ends of the grinding cylinder are rotatably mounted with collars, which are fixed to the base plate. The collars have water grooves distributed circumferentially inside them. The collars also have through holes and inlet / outlet water holes communicating with the water grooves. Both ends of the grinding cylinder have inlet / outlet water holes, with the through holes facing the inlet / outlet water holes. When the grinding cylinder rotates, the through holes can communicate with the inlet / outlet water holes.

[0007] Furthermore, it also includes a drive assembly disposed on the substrate for driving the grinding cylinder to rotate. The drive assembly includes a transmission gear mounted on the outer wall of the grinding cylinder. A mounting base is mounted on the top surface of the substrate. A drive motor and a gearbox are mounted on the mounting base. The drive end of the drive motor is connected to the main shaft of the gearbox. The countershaft of the gearbox is connected to a drive gear that meshes with the transmission gear.

[0008] Furthermore, the top surface of the substrate is symmetrically equipped with supports, and a shaft cylinder is rotatably mounted on the supports, with the grinding cylinder connected between the two shaft cylinders.

[0009] Furthermore, the right end face of the grinding cylinder is provided with an annular groove that communicates with the cooling cavity. A connecting sleeve is provided inside the annular groove. One end of the connecting sleeve is connected to a collar, and the other end of the connecting sleeve extends into the interior of the cooling cavity and is connected to a first connecting rod. The end of the first connecting rod away from the connecting sleeve is connected to a second connecting rod.

[0010] Furthermore, the first connecting rod extends radially along the inlet and outlet water holes, and the second connecting rod extends axially along the grinding cylinder. Both the first connecting rod and the second connecting rod are disposed inside the cooling chamber.

[0011] Furthermore, a sealing film is provided on both the inner and outer surfaces of the connecting sleeve, and the sealing film is in contact with the inner wall of the annular groove.

[0012] Furthermore, a sealing lip is provided on the side of the collar that is in contact with the grinding cylinder, and the sealing lip seals the gap between the collar and the end face of the grinding cylinder.

[0013] Furthermore, the support is provided with a bearing, and the shaft is connected to the support through the bearing.

[0014] Beneficial effects:

[0015] 1. In this utility model, the cooling chamber inside the grinding cylinder and the collar form a closed-loop water circulation through the through hole and the water inlet and outlet holes. The cooling medium can continuously enter and exit the cooling chamber as the grinding cylinder rotates, quickly dissipating the heat generated by grinding, suppressing the temperature rise inside the cylinder from the source, and solving the problem of rapid drying of slurry moisture caused by high temperature in traditional ball mills.

[0016] 2. In this utility model, the first connecting rod and the second connecting rod rotate synchronously with the grinding cylinder, which stirs the cooling medium in the cooling chamber in multiple directions, breaks the static state of the medium, makes the heat distribution more uniform, avoids the difference in water evaporation caused by local high temperature, and further improves the temperature control accuracy.

[0017] 3. In this invention, the sealing membrane of the connecting sleeve and the sealing lip of the collar form a double seal, effectively preventing leakage of the cooling medium and ensuring the continuous and efficient operation of the water circulation system. The stable cooling effect maintains constant moisture content in the medium-mineral powder slurry, reduces particle agglomeration, and significantly improves grinding uniformity and final product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the right-side structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0022] In the diagram: 1. Base plate; 2. Support; 3. Shaft cylinder; 4. Grinding cylinder; 5. Transmission gear; 6. Mounting base; 7. Drive motor; 8. Gearbox; 9. Drive gear; 10. Collar; 11. Cooling chamber; 12. First connecting rod; 13. Second connecting rod; 14. Water inlet / outlet holes; 15. Water tank; 16. Through hole; 17. Water inlet / outlet holes; 18. Connecting sleeve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4As shown, a wet grinding and mixing device for medium mineral powder includes a base plate 1. A grinding cylinder 4 for grinding is rotatably mounted on the base plate 1. A cooling chamber 11 is provided inside the grinding cylinder 4. A collar 10 is rotatably mounted on both ends of the grinding cylinder 4. The collar 10 is fixed on the base plate 1. A water tank 15 distributed circumferentially is provided inside the collar 10. A through hole 16 and a water inlet / outlet hole 17 communicating with the water tank 15 are also provided on the collar 10. A water inlet / outlet hole 14 is provided on both ends of the grinding cylinder 4. The through hole 16 is set towards the water inlet / outlet hole 14. When the grinding cylinder 4 rotates, the through hole 16 can communicate with the water inlet / outlet hole 14.

[0025] Specifically, the substrate 1 provides the basic support for the device, and the grinding cylinder 4 achieves wet grinding of medium-density mineral powder by rotation. The cooling chamber 11 inside the grinding cylinder 4 is used to contain the cooling medium, and the collars 10 rotatably mounted on both ends are fixed to the substrate 1. The water tank 15 inside is connected to an external cooling water source through the water inlet and outlet holes 17. When the grinding cylinder 4 rotates, the through holes 16 on the collars 10 periodically connect with the water inlet and outlet holes 14 of the grinding cylinder 4, allowing the cooling medium to enter the cooling chamber 11 and carry away the heat generated during grinding.

[0026] As a technical optimization of this utility model, it also includes a drive assembly disposed on the substrate 1 for driving the grinding cylinder 4 to rotate. The drive assembly includes a transmission gear 5 mounted on the outer wall of the grinding cylinder 4. A mounting base 6 is mounted on the top surface of the substrate 1. A drive motor 7 and a gearbox 8 are mounted on the mounting base 6. The drive end of the drive motor 7 is connected to the main shaft of the gearbox 8. The secondary shaft of the gearbox 8 is connected to a drive gear 9 that meshes with the transmission gear 5.

[0027] Specifically, in the drive assembly, the drive motor 7 provides power, and after the speed is adjusted by the gearbox 8, it meshes with the transmission gear 5 on the outer wall of the grinding cylinder 4 through the drive gear 9, driving the grinding cylinder 4 to rotate at a suitable speed. The mounting base 6 serves to fix the drive motor 7 and the gearbox 8.

[0028] As a technical optimization of this utility model, the top surface of the substrate 1 is symmetrically equipped with a support 2, and a shaft cylinder 3 is rotatably mounted on the support 2. The grinding cylinder 4 is connected between the two shaft cylinders 3.

[0029] Specifically, the supports 2 on the substrate 1 are symmetrically distributed, the shaft cylinder 3 is rotatably mounted on the supports 2, and the grinding cylinder 4 is connected between the two shaft cylinders 3, so that the grinding cylinder 4 can rotate stably under the support of the shaft cylinder 3.

[0030] As a technical optimization of this utility model, an annular groove communicating with the cooling cavity 11 is opened on the right end face of the grinding cylinder 4. A connecting sleeve 18 is provided inside the annular groove. One end of the connecting sleeve 18 is connected to the collar 10, and the other end of the connecting sleeve 18 extends into the interior of the cooling cavity 11 and is connected to a first connecting rod 12. The end of the first connecting rod 12 away from the connecting sleeve 18 is connected to a second connecting rod 13.

[0031] Specifically, a connecting sleeve 18 is provided in the annular groove on the right end face of the grinding cylinder 4. One end is connected to the collar 10, and the other end extends to the cooling chamber 11 and connects to the first connecting rod 12 and the second connecting rod 13. When the grinding cylinder 4 rotates, the connecting rod rotates synchronously with it, stirring the cooling medium in the cooling chamber 11.

[0032] As a technical optimization of this utility model, the first connecting rod 12 extends radially along the water inlet / outlet hole 14, and the second connecting rod 13 extends axially along the grinding cylinder 4. Both the first connecting rod 12 and the second connecting rod 13 are disposed inside the cooling chamber 11.

[0033] Specifically, the first connecting rod 12 extends radially along the water inlet / outlet hole 14, and the second connecting rod 13 extends axially along the grinding cylinder 4. Both are located in the cooling chamber 11 and stir the cooling medium from different directions when the grinding cylinder 4 rotates.

[0034] As a technical optimization of this utility model, the inner and outer surfaces of the connecting sleeve 18 are provided with sealing films, and the sealing films are in contact with the inner wall of the annular groove.

[0035] Specifically, the sealing film on the inner and outer surfaces of the connecting sleeve 18 fits against the inner wall of the annular groove, preventing the cooling medium from leaking from the gap between the connecting sleeve 18 and the annular groove.

[0036] As a technical optimization of this utility model, a sealing lip is provided on the side of the collar 10 that is in contact with the grinding cylinder 4, and the sealing lip seals the gap between the collar 10 and the end face of the grinding cylinder 4.

[0037] Specifically, the sealing lip of the mating surface of the collar 10 and the grinding cylinder 4 seals the gap between them to prevent the cooling medium from leaking from the end face connection.

[0038] As a technical optimization of this utility model, a bearing is provided on the support 2, and the shaft cylinder 3 is connected to the support 2 through the bearing.

[0039] Specifically, the bearing on the support 2 enables the shaft cylinder 3 to rotate with the support 2 with low friction, reducing the resistance when the shaft cylinder 3 rotates.

[0040] The overall working principle of this wet grinding and mixing device for medium mineral powder is as follows:

[0041] The device uses a base plate 1 as its supporting foundation. Supports 2, symmetrically mounted on the top surface of the base plate 1, are connected to the shaft cylinder 3 via bearings, ensuring stable rotation of the shaft cylinder 3. The grinding cylinder 4, connected between the two shaft cylinders 3, serves as the grinding core, achieving overall rotation through the support of the shaft cylinder 3. When the device is started, the drive assembly begins operation: a transmission gear 5 mounted on the outer wall of the grinding cylinder 4 meshes with a drive gear 9, which is driven by a gearbox 8. The gearbox 8 receives power from a drive motor 7. The drive motor 7 and gearbox 8 are fixed to the mounting base 6 on the base plate 1. By adjusting the motor's output speed, the grinding cylinder 4 is ultimately driven to rotate at a suitable speed, causing the grinding media inside the cylinder to collide and grind the medium-strength mineral powder. Simultaneously, the powder mixes with added water to form a slurry, completing the basic wet grinding operation.

[0042] To address the overheating issue of traditional ball mills, the device achieves dynamic cooling through cooling chamber 11 and a water circulation system.

[0043] Cooling medium circulation path: The collar 10 is fixed on the base plate 1 and rotates to fit against both ends of the grinding cylinder 4. The water tank 15 inside is connected to the external cooling water source through the inlet and outlet water holes 17. When the grinding cylinder 4 rotates, the through hole 16 on the collar 10 will periodically connect with the inlet and outlet water holes 14 on the end face of the grinding cylinder 4, allowing the cooling medium to enter the cooling chamber 11 inside the grinding cylinder 4 through the through hole 16 and the inlet and outlet water holes 14.

[0044] Enhanced cooling effect: A connecting sleeve 18 is provided in the annular groove on the right end face of the grinding cylinder 4. One end of the sleeve is connected to the collar 10, and the other end extends to the cooling chamber 11 and connects to the first connecting rod 12 and the second connecting rod 13. The first connecting rod 12 extends radially along the water inlet and outlet holes 14, and the second connecting rod 13 extends axially along the grinding cylinder 4. When the grinding cylinder 4 rotates, the two connecting rods can stir the medium in the cooling chamber and improve the heat exchange efficiency.

[0045] Sealing guarantee: The sealing film on the inner and outer surfaces of the connecting sleeve 18 fits against the inner wall of the annular groove, and the sealing lip on the mating surface of the collar 10 and the grinding cylinder 4 together prevent the leakage of cooling medium and ensure the efficient operation of the cooling system.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A middling powder wet grinding mixing device, comprising a base plate (1), a grinding cylinder (4) for grinding is rotatably installed on the base plate (1), characterized in that: The grinding cylinder (4) has a cooling chamber (11) inside. Both ends of the grinding cylinder (4) are rotatably mounted with collars (10). The collars (10) are fixed on the base plate (1). The collars (10) have water tanks (15) distributed circumferentially inside. The collars (10) also have a through hole (16) and a water inlet / outlet hole (17) connecting the water tank (15). Both ends of the grinding cylinder (4) have water inlet / outlet holes (14). The through hole (16) is set towards the water inlet / outlet hole (14). When the grinding cylinder (4) rotates, the through hole (16) can communicate with the water inlet / outlet hole (14).

2. The middlings wet grinding mixing device according to claim 1, wherein: It also includes a drive assembly disposed on the substrate (1) for driving the grinding cylinder (4) to rotate. The drive assembly includes a transmission gear (5) mounted on the outer wall of the grinding cylinder (4). A mounting base (6) is mounted on the top surface of the substrate (1). A drive motor (7) and a gearbox (8) are mounted on the mounting base (6). The drive end of the drive motor (7) is connected to the main shaft of the gearbox (8). The secondary shaft of the gearbox (8) is connected to a drive gear (9) that meshes with the transmission gear (5).

3. The middlings wet grinding mixing device according to claim 1, wherein: The top surface of the substrate (1) is symmetrically equipped with a support (2), and a shaft cylinder (3) is rotatably mounted on the support (2). The grinding cylinder (4) is connected between the two shaft cylinders (3).

4. The middlings wet grinding mixing device of claim 1, wherein: The grinding cylinder (4) has an annular groove on its right end face that communicates with the cooling chamber (11). A connecting sleeve (18) is provided inside the annular groove. One end of the connecting sleeve (18) is connected to the collar (10), and the other end of the connecting sleeve (18) extends into the cooling chamber (11) and is connected to a first connecting rod (12). The end of the first connecting rod (12) away from the connecting sleeve (18) is connected to a second connecting rod (13).

5. The middlings wet grinding mixing device according to claim 4, wherein: The first connecting rod (12) extends radially along the inlet / outlet water hole (14), and the second connecting rod (13) extends axially along the grinding cylinder (4). Both the first connecting rod (12) and the second connecting rod (13) are disposed inside the cooling chamber (11).

6. The middlings wet grinding mixing device according to claim 4, wherein: The inner and outer surfaces of the connecting sleeve (18) are provided with sealing films, and the sealing films are in contact with the inner wall of the annular groove.

7. The middlings wet grinding mixing device of claim 1, wherein: A sealing lip is provided on the side of the collar (10) that is in contact with the grinding cylinder (4), and the sealing lip seals the gap between the end face of the collar (10) and the grinding cylinder (4).

8. The middlings wet grinding mixing device according to claim 3, wherein: The support (2) is provided with a bearing, and the shaft cylinder (3) is connected to the support (2) through the bearing.

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