Continuous wet-type crushing and ball-milling system

Abstract

The utility model discloses a continuous wet-type crushing and ball-milling system which comprises a grinding machine and a ball mill, a feeding device is arranged at the upper part of a grinding cylinder of the grinding machine, a transmission grinding device is arranged in the grinding cylinder, and the grinding machine grinds materials through a blade tool bit; a transmission ball-milling device is arranged in a ball-milling barrel of the ball mill and comprises a stirring rod, the periphery of the stirring rod is filled with ball-milling beads, a double-layer screen plate is arranged below the stirring rod, and the ball mill conducts ball-milling treatment on materials through the stirring rod and the ball-milling beads. According to the utility model, a mechanochemical shearing-ball milling mixed extraction technology is applied to natural plant extraction, a seamless continuous process from material crushing to extraction is realized through the grinder and the ball mill, the grinding and extraction efficiency and effect are remarkably improved, meanwhile, large-scale continuous production is supported, the safety and reliability of the production process are guaranteed, and the production cost is reduced. And the operation complexity and cost are reduced, and the requirements of modern production are better met.

Description

Technical Field

[0001] The utility model relates to the technical field of plant extraction equipment, in particular to a continuous wet crushing ball milling system. Background Art

[0002] The beneficial components of natural plants can be extracted by a variety of chemical and physical means, such as leaching, distillation, supercritical CO2 extraction, enzyme-assisted extraction, and mechanochemical extraction. Mechanochemical extraction effectively destroys the structural integrity of plant tissues and reduces their particle size by applying mechanical energy, such as friction, collision, extrusion, and shearing, so as to more effectively release active compounds into the solvent, thereby significantly improving the mass transfer efficiency of raw materials. As a key equipment for implementing this technology, ball mills can be divided into intermittent and continuous types according to their working modes. In industrial production, intermittent ball mills need to be frequently shut down during the feeding and discharging process, and the degree of automation is not high, so the production efficiency is low. In contrast, continuous ball mills reduce the energy consumption required for frequent start-up and shutdown, are easier to integrate automatic control systems, achieve precise control of the production process, and improve the stability and reliability of operation, so they have higher production efficiency.

[0003] The existing patent with publication number CN114798089B discloses a continuous wet ball milling separation equipment and method. The equipment includes a cylinder, and the cylinder includes a feed section, a shearing section and a crushing section from top to bottom; the feed section is located at the upper part of the equipment, and the feed section is provided with a liquid inlet, a material inlet and a material distributor; the shearing section is located in the middle of the equipment, and a shearing sheet is provided in the shearing section; the crushing section is located at the lower part of the equipment, and a stirring rod and a crushing ball are provided in the crushing section, and a graded discharge module is provided at the bottom of the crushing section. The continuous operation process of material crushing and grading is realized by means of a material distributor, wet shearing, wet crushing and wet grading, which effectively improves the material grinding effect. However, the ball milling equipment is only suitable for the continuous wet separation of low-temperature molten insoluble sulfur, and its mechanical resistance to natural plants is relatively low, so it is difficult to effectively apply sufficient force to destroy solid materials with low mechanical strength, and cannot meet the special requirements of natural plant extraction. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a continuous wet crushing ball mill system.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions, including:

[0006] A grinder and a ball mill, wherein the grinder and the ball mill are connected via a powder transport pipeline;

[0007] The grinder comprises a grinding cylinder, a first feeding device is arranged on the upper part of the grinding cylinder, a transmission grinding device is arranged inside the grinding cylinder, the transmission grinding device comprises a blade cutter head, and the grinder performs a grinding process on the material through the blade cutter head;

[0008] The ball mill comprises a ball milling cylinder, a transmission ball milling device is arranged inside the ball milling cylinder, the transmission ball milling device comprises a stirring rod, ball milling beads are filled around the stirring rod, a discharging device is arranged below the stirring rod, the discharging device comprises a double-layer screen plate, and the ball mill performs ball milling processing on the material through the stirring rod and the ball milling beads.

[0009] As a further description of the above technical solution, the grinding cylinder of the grinder and the ball milling cylinder of the ball mill both adopt a cylindrical structure.

[0010] As a further description of the above technical solution, the first feeding device is arranged on one side of the top of the grinder, and the first feeding device includes a feeding funnel, the feeding funnel is provided with a solid block inlet, and a first valve is provided under the feeding funnel. The first valve continuously supplies solid material into the grinding cylinder by controlling the feeding funnel.

[0011] As a further description of the above technical solution, a gas inlet is arranged on one side of the middle part of the grinder, the gas inlet is connected to a pressure delivery device, and the gas inlet is provided with a second valve, which controls the high-pressure air of the pressure delivery device to deliver the powder into the ball mill.

[0012] As a further description of the above technical solution, a powder outlet is provided on one side of the bottom of the grinder, and a powder inlet is provided on one side above the ball mill. The powder outlet is connected to the powder inlet through a powder transport pipe, and the powder transport pipe is provided with a third valve.

[0013] As a further description of the above technical solution, the blade cutter head is detachably connected to the first motor via a first rotating shaft, the first motor is arranged at the upper center position of the grinder, and the blade cutter head is driven by the first motor to grind the material.

[0014] As a further description of the above technical solution, a second feeding device is provided on the other side of the top of the ball mill, and the second feeding device includes a liquid inlet, and the liquid inlet continuously supplies the solvent into the ball mill cylinder through a liquid inlet pipe, and the liquid inlet pipe is provided with a fourth valve;

[0015] The ball mill is provided with a material outlet at the bottom, and the material outlet discharges the ball-milled material through a material discharge pipe, and the material discharge pipe is provided with a fifth valve.

[0016] As a further description of the above technical solution, the stirring rod is detachably connected to the second motor via a second rotating shaft, the second motor is disposed at the upper center of the ball mill, and the stirring rod is driven by the second motor to grind the material.

[0017] As a further description of the above technical solution, the diameter of the ball milling beads is 10-20 mm, and the material of the ball milling beads is any one of stainless steel, zirconia, alumina, agate, polyurethane coated iron core, and cemented carbide. The ratio of the volume of the ball milling beads to the volume of the ball mill cylinder is in the range of 0.2:1-0.8:1.

[0018] As a further description of the above technical solution, the double-layer screen plate includes a first screen plate and a second screen plate. The first screen plate and the second screen plate are initially staggered. The aperture range of the screen holes of the first screen plate and the second screen plate is 3-8 mm. The ball-milled material is discharged from the material outlet by controlling the staggering and overlap of the screen holes of the first screen plate and the second screen plate.

[0019] The beneficial effects of the utility model are as follows:

[0020] 1. The utility model applies the mechanochemical shearing-ball milling mixed extraction technology to natural plant extraction, and realizes a seamless continuous process from material crushing to extraction through a grinder and a ball mill, which significantly improves the efficiency and effect of grinding and extraction, supports large-scale continuous production, ensures the safety and reliability of the production process, reduces the complexity and cost of operation, achieves significant energy-saving effects, and is more adapted to the needs of modern production;

[0021] 2. The utility model is provided with a unique powder conveying system and equipped with multiple one-way valves, which can efficiently and continuously supply the ground powder from the grinder to the ball mill, effectively preventing the reverse flow of materials and potential system blockage, while simplifying the production process and improving the overall efficiency of the system;

[0022] 3. In the utility model, the discharge device of the ball mill adopts a double-layer screen plate design. The staggered and superimposed screen plates make the material discharge smoother and ensure the retention of the ball milling medium, thereby achieving precise control of the material discharge, optimizing the production cost, and improving the thoroughness of material processing.

[0023] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the continuous wet crushing ball mill system of the utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of the structure of the double-layer screen plate of the medium ball mill;

[0026] Figure 3 yes Figure 1 Schematic diagram of the structure of the second screen plate of the medium ball mill.

[0027] Reference numerals:

[0028] 1. Feed hopper; 2. Solid block inlet; 3. First valve; 4. First motor; 5. Grinding cylinder; 6. First rotating shaft; 7. Blade cutter head; 8. Second valve; 9. Gas inlet; 10. Powder outlet; 11. Third valve; 12. Powder transport pipeline; 13. Powder inlet; 14. Second motor; 15. Liquid inlet; 16. Fourth valve; 17. Liquid inlet pipeline; 18. Second rotating shaft; 19. Ball mill cylinder; 20. Stirring rod; 21. Ball mill beads; 22. First screen plate; 23. Second screen plate; 24. Material discharge pipeline; 25. Fifth valve; 26. Material outlet. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0030] like Figure 1-Figure 3 As shown, in one embodiment, a continuous wet pulverizing ball milling system includes: a grinder and a ball mill, and the grinder and the ball mill are connected through a powder transport pipeline 12. Among them, the grinder part is composed of a grinding cylinder 5, a first feeding device, a transmission grinding device, a grinding medium and a discharge port; the ball mill part is composed of a ball mill cylinder 19, a second feeding device, a transmission ball milling device, a ball milling medium and a discharge device.

[0031] Specifically, the grinding machine includes a grinding cylinder 5, and the ball mill includes a ball mill cylinder 19. The grinding cylinder 5 of the grinding machine and the ball mill cylinder 19 of the ball mill both adopt a cylindrical structure.

[0032] like Figure 1-Figure 3 As shown, in this embodiment, a transmission grinding device is arranged inside the grinding cylinder 5, and the transmission grinding device includes a blade cutter head 7, and the grinder grinds the material through the blade cutter head 7. The blade cutter head 7 is detachably connected to the first motor 4 through the first rotating shaft 6, and the first motor 4 is arranged at the upper center of the grinder. The blade cutter head 7 is driven by the first motor 4 to cooperate with the grinding medium to crush and grind the material. Specifically, the blade cutter head 7 is made of stainless steel, which has good durability and stability.

[0033] Furthermore, a first feeding device is provided on one side of the top of the grinder, and the first feeding device includes a feeding funnel 1. The feeding funnel 1 is designed with a solid block inlet 2. A first valve 3 is provided below the feeding funnel 1 to continuously supply the material in the feeding funnel 1 to the grinding cylinder 5, thereby ensuring the stability and continuity of the grinding process.

[0034] Furthermore, a gas inlet 9 is provided on one side of the middle part of the grinder, and the gas inlet 9 is connected to a pressure conveying device, which uses air pressure to automatically convey the ground powder to the ball mill through a powder transport pipeline 12 for further processing; the gas inlet 9 is provided with a second valve 8, and the second valve 8 conveys the powder into the ball mill by controlling the high-pressure air of the pressure conveying device.

[0035] Furthermore, a powder outlet 10 is provided at one side of the bottom of the grinding machine, and a powder inlet 13 is provided at one side of the upper side of the ball mill, so as to facilitate the simultaneous addition of powder and liquid. The powder outlet 10 is connected to the powder inlet 13 through a powder transport pipe 12. In order to prevent the reverse flow of powder, a one-way valve third valve 11 is installed on the powder transport pipe 12 to ensure the unidirectionality of material transportation.

[0036] like Figure 1-Figure 3 As shown, in this embodiment, a transmission ball milling device is arranged inside the ball mill cylinder 19, and the transmission ball milling device includes a stirring rod 20, and the ball mill performs ball milling of the material through the stirring rod 20 and the ball milling beads 21. Among them, the stirring rod 20 is detachably connected to the second motor 14 through the second rotating shaft 18, and the second motor 14 is arranged at the center of the upper part of the ball mill, and the stirring rod 20 is driven by the second motor 14 to grind the material.

[0037] Furthermore, a second feeding device is provided on the other side of the top of the ball mill, and the second feeding device includes a liquid inlet 15, and the liquid inlet 15 continuously supplies the solvent to the ball mill cylinder 19 through a liquid inlet pipe 17, and the liquid inlet 15 pipe is provided with a fourth valve 16; a material outlet 26 is provided at the bottom of the ball mill, and the material outlet 26 discharges the ball-milled material through a material discharge pipe 24, and the material discharge pipe 24 is provided with a fifth valve 25.

[0038] Furthermore, the stirring rod 20 is surrounded by ball milling beads 21. Specifically, the ball milling beads 21 have a diameter of 10-20 mm, and are made of any one of stainless steel, zirconium oxide, aluminum oxide, agate, polyurethane iron core, and hard alloy, and the ratio of the volume of the ball milling beads 21 to the volume of the ball mill cylinder 19 is in the range of 0.2:1-0.8:1. The ball milling process can be flexibly adjusted according to specific process requirements and material properties to achieve the best ball milling effect and processing efficiency.

[0039] Furthermore, a discharging device is provided below the stirring rod 20, and the discharging device is a double-layer screen plate, including a first screen plate 22 and a second screen plate 23. Specifically, the first screen plate 22 and the second screen plate 23 are initially arranged in a staggered manner, and the aperture range of the screen holes of the first screen plate 22 and the second screen plate 23 is 3-8 mm, which is smaller than the diameter of the ball milling beads 21. During the ball milling process, the double-layer screen plates are arranged in a staggered manner, and the apertures of the first screen plate 22 and the second screen plate 23 are not aligned to ensure the closed state of the material in the ball mill cylinder 19; when the ball milling is completed, the double-layer screen plates overlap, and the apertures of the first screen plate 22 and the second screen plate 23 are aligned, thereby facilitating the smooth discharge of the material.

[0040] Working principle: The uniformly arranged solid block inlet 2, powder inlet 13 and liquid inlet 15 are located at the top of the cylinder, while the powder outlet 10 and material outlet 26 are both located at the bottom of the cylinder, so as to facilitate the upper inlet and lower outlet of the material.

[0041] The transmission grinding device is located inside the grinding cylinder 5, and is driven by the blade cutter head 7 on the first rotating shaft 6 through the first motor 4 to grind the material. The transmission ball milling device is located inside the ball milling cylinder 19, and is driven by the stirring rod 20 on the second rotating shaft 18 through the second motor 14 to cooperate with the ball milling beads 21 to perform high-energy ball milling on the material. The grinder and the ball mill are connected by a powder transport pipeline 12, and the ground powder is automatically transported to the ball mill for further processing by air pressure, thereby realizing effective material transfer.

[0042] During the ball milling process, the double-layer screen plates are staggered to ensure that the material is closed in the ball mill cylinder 19; after the ball milling is completed, the double-layer screen plates overlap, and the apertures of the first screen plate 22 and the second screen plate 23 are aligned, thereby promoting the smooth discharge of the material.

[0043] Through the above technical solution, the grinder and ball mill realize a seamless and continuous process from material crushing to extraction, significantly improving the efficiency and effect of grinding and extraction. At the same time, it supports large-scale continuous production, ensures the safety and reliability of the production process, reduces operational complexity and cost, achieves significant energy-saving effects, and is more adaptable to modern production needs.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A continuous wet grinding ball mill system, characterized in that: include: A grinder and a ball mill, wherein the grinder and the ball mill are connected via a powder transport pipeline (12); The grinding machine comprises a grinding cylinder (5), a first feeding device is arranged on the upper part of the grinding cylinder (5), a transmission grinding device is arranged inside the grinding cylinder (5), the transmission grinding device comprises a blade cutter head (7), and the grinding machine performs a grinding process on the material through the blade cutter head (7); The ball mill comprises a ball mill cylinder (19), a transmission ball mill device is arranged inside the ball mill cylinder (19), the transmission ball mill device comprises a stirring rod (20), the stirring rod (20) is filled with ball mill beads (21), a discharge device is arranged below the stirring rod (20), the discharge device comprises a double-layer screen plate, and the ball mill performs ball milling processing on the material through the stirring rod (20) and the ball mill beads (21).

2. The continuous wet grinding ball mill system according to claim 1, characterized in that: The grinding cylinder (5) of the grinding machine and the ball mill cylinder (19) of the ball mill both adopt a cylindrical structure.

3. The continuous wet grinding ball mill system according to claim 1, characterized in that: The first feeding device is arranged on one side of the top of the grinding machine, and comprises a feeding hopper (1). The feeding hopper (1) is provided with a solid block inlet (2). A first valve (3) is arranged below the feeding hopper (1). The first valve (3) controls the feeding hopper (1) to continuously supply solid materials into the grinding cylinder (5).

4. The continuous wet grinding ball mill system according to claim 1, characterized in that: A gas inlet (9) is provided on one side of the middle of the grinding machine, and the gas inlet (9) is connected to a pressure conveying device. The gas inlet (9) is provided with a second valve (8), and the second valve (8) conveys the powder into the ball mill by controlling the high-pressure air of the pressure conveying device.

5. The continuous wet grinding ball mill system according to claim 1, characterized in that: A powder outlet (10) is provided on one side of the bottom of the grinding machine, and a powder inlet (13) is provided on one side of the top of the ball mill. The powder outlet (10) is connected to the powder inlet (13) through a powder transport pipeline (12), and the powder transport pipeline (12) is provided with a third valve (11).

6. The continuous wet grinding ball mill system according to claim 1, characterized in that: The blade cutter head (7) is detachably connected to the first motor (4) via a first rotating shaft (6); the first motor (4) is arranged at the center of the upper part of the grinder; the blade cutter head (7) is driven by the first motor (4) to grind the material.

7. The continuous wet grinding ball mill system according to claim 1, characterized in that: A second feeding device is provided on the other side of the top of the ball mill, the second feeding device comprises a liquid inlet (15), the liquid inlet (15) continuously supplies the solvent into the ball mill cylinder (19) through a liquid inlet pipe (17), and the liquid inlet (15) pipe is provided with a fourth valve (16); The bottom of the ball mill is provided with a material outlet (26), and the material outlet (26) discharges the ball-milled material through a material discharge pipe (24), and the material discharge pipe (24) is provided with a fifth valve (25).

8. The continuous wet grinding ball mill system according to claim 1, characterized in that: The stirring rod (20) is detachably connected to the second motor (14) via the second rotating shaft (18); the second motor (14) is arranged at the center of the upper part of the ball mill; the stirring rod (20) is driven by the second motor (14) to grind the material.

9. The continuous wet grinding ball mill system according to claim 1, characterized in that: The diameter of the ball milling beads (21) is 10-20 mm. The material of the ball milling beads (21) is any one of stainless steel, zirconium oxide, aluminum oxide, agate, polyurethane-coated iron core, and hard alloy. The ratio of the volume of the ball milling beads (21) to the volume of the ball mill cylinder (19) is in the range of 0.2:1-0.8:

1.

10. The continuous wet grinding ball mill system according to claim 1, characterized in that: The double-layer screen plate comprises a first screen plate (22) and a second screen plate (23). The first screen plate (22) and the second screen plate (23) are initially arranged in a staggered manner. The apertures of the screen holes of the first screen plate (22) and the second screen plate (23) are in the range of 3-8 mm. By controlling the staggering and overlapping of the screen holes of the first screen plate (22) and the second screen plate (23), the ball-milled material is discharged through a material outlet (26).

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