Efficient mixing and grinding ball mill
By introducing a series-connected storage tank and grinding tank design into the ball mill, combined with solenoid valve control and a programmable logic controller, the ball mill can achieve staged grinding of soft and hard materials, solving the problems of high energy consumption, low efficiency and uneven particle size of traditional ball mills, and improving grinding effect and energy utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU ARCHITECTUAL RES INST GRP CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional ball mills are energy-intensive, have low grinding efficiency, and produce uneven particle size when processing various solid wastes with large differences in hardness. In particular, when soft and hard materials are mixed, the soft materials are over-ground in the early stages, while the hard materials are not completely crushed.
The design employs a series-connected storage tank and grinding tank, combined with solenoid valve control and a programmable logic controller to achieve staged grinding of soft and hard materials. The grinding process is optimized through the combined motion driven by a planetary disk and the coordination of multi-stage steel balls.
It significantly improves grinding efficiency, reduces energy consumption, and ensures the uniformity of powder particle size and the stability of the grinding process, avoiding material waste and equipment contamination.
Smart Images
Figure CN224252974U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grinding technology and provides a structural improvement of a ball mill, which is particularly suitable for the efficient mixing and grinding of various industrial solid waste powders. Specifically, it relates to an efficient mixing and grinding ball mill. Background Technology
[0002] Ball mills, as a common grinding equipment, are widely used in building materials, mining, metallurgy, chemical and other fields. They are mainly used to crush and mix various solid materials. With the expansion of industrial production scale and the increasing requirements for energy conservation and emission reduction, ball mill technology is also constantly developing and optimizing, and has gradually formed a variety of improvement schemes with the main goals of improving grinding efficiency and reducing energy consumption.
[0003] In actual production, ball mills have a variety of applications. They can be used for grinding single materials or for mixing and grinding multiple materials. When processing solid waste, industrial by-products and mineral materials, it is often necessary to mix and grind multiple materials to prepare powders with specific physicochemical properties. However, due to the large differences in hardness and grindability of different materials, traditional ball mills often face problems of high energy consumption and low grinding efficiency when grinding multiple solid wastes.
[0004] Existing ball mill structures typically employ a single grinding jar for mixed grinding, where multiple materials are directly fed into the jar in a specific ratio, and pulverization is achieved through the impact and friction between the steel balls and the materials. However, this method has the following drawbacks and shortcomings when processing materials with significant differences in hardness:
[0005] Harder solid wastes, such as steel slag and tailings, are more difficult to crush. In the initial stage of grinding, the ball mill needs to apply a large impact force, which leads to a significant increase in energy consumption. Softer solid wastes, such as slag and lithium slag, are easily crushed prematurely under strong impact, resulting in over-grinding and further exacerbating the energy consumption problem. In addition, when soft and hard materials are mixed and ground, the steel balls mainly act on the hard materials during the grinding process, while the softer materials become a buffer medium, weakening the impact effect and significantly reducing grinding efficiency. These problems mean that in the traditional ball milling process, soft materials often reach a fine powder state in the early stages, while hard materials are not completely crushed. Ultimately, this results in uneven particle size of the mixed powder, affecting the performance of subsequent processes.
[0006] In view of the problems of low grinding efficiency, high energy consumption and uneven particle size of solid waste materials in ball mills, there is an urgent need for a tray structure to solve the above problems. Utility Model Content
[0007] This invention proposes a high-efficiency mixed grinding ball mill. By optimizing the traditional ball mill jar, it adds a staged automatic grinding function for hard and soft materials and rationally controls the grinding process, thereby achieving high efficiency and energy saving in the mixed grinding of multiple solid wastes.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A high-efficiency mixing and grinding ball mill has a storage tank and a grinding tank arranged in series, the storage tank and the grinding tank are connected by a flange, an electromagnetic valve is provided between the storage tank and the grinding tank, steel balls are provided in the grinding tank, the ball mill also includes a controller for controlling the switching of the electromagnetic valve and grinding parameters, and a motor for driving the grinding tank to rotate through a drive shaft;
[0010] By using a dual-tank design connected in series and a solenoid valve to control the staged addition of soft materials, the problem of high energy consumption, low grinding efficiency and uneven particle size caused by hardness differences when mixing and grinding soft and hard solid wastes in traditional ball mills is solved. This achieves precise process control by crushing hard materials first and then mixing in soft materials.
[0011] Furthermore, the motor drives the planetary disk to rotate via the transmission shaft, thereby driving the combined tank to revolve around the sun, and the planetary disk itself drives the combined tank to rotate on its own axis.
[0012] By using a planetary disk to drive the combined tank, a combined motion of revolution and rotation is achieved, which solves the problem of uneven impact of steel balls in the traditional single rotation mode of ball mills. This allows the steel balls to impact and grind the material more thoroughly, significantly improving grinding efficiency.
[0013] Furthermore, the solenoid valve is a solenoid butterfly valve equipped with a buffer chamber;
[0014] By setting a buffer chamber on the solenoid valve, the problem of powder gushing out due to impact force when the valve is opened and closed is solved, avoiding material waste and equipment contamination, and ensuring the stability and controllability of material addition during the grinding process.
[0015] Furthermore, the controller is a programmable logic controller;
[0016] By adopting a programmable logic controller (PLC), the problem of insufficient precision in traditional manual control or simple circuit control is solved, and the automatic and precise adjustment of parameters such as grinding time, speed, and feeding timing is realized, ensuring the stability and repeatability of the grinding process.
[0017] Furthermore, both the storage tank and the grinding tank are made of 304 stainless steel.
[0018] By selecting 304 stainless steel and mirror polishing the inner wall, the problem of powder adhesion inside the tank is solved, reducing material residue and pollution, while improving the corrosion resistance and service life of the equipment.
[0019] Furthermore, the steel balls are made up of a multi-stage particle size distribution, including large steel balls with a diameter of 20mm, medium steel balls with a diameter of 10mm, and small steel balls with a diameter of 5mm.
[0020] By using a combination of large, medium, and small multi-sized steel balls, the problem of poor crushing effect of single-sized steel balls on materials of different hardness is solved: large steel balls are used to impact hard materials, while medium and small steel balls are used to grind fine powder, forming a graded crushing effect, improving grinding efficiency and avoiding over-grinding.
[0021] Furthermore, the volume percentages of the large steel ball, medium steel ball, and small steel ball are 30%, 40%, and 30%, respectively;
[0022] By optimizing the volume ratio of multi-stage steel balls, the problem of imbalance between impact and grinding caused by unreasonable steel ball ratio is solved, so that the steel balls can effectively crush hard materials and fully grind soft materials during the grinding process, thus balancing grinding efficiency and energy consumption.
[0023] Furthermore, the storage tank has a volume of 2L, and the grinding tank has a volume of 3L;
[0024] By setting the volume ratio of 2L storage tank and 3L grinding tank, the problem of unreasonable material quantity control during mixed grinding of multiple solid wastes is solved. This ensures that hard materials have sufficient space for primary crushing in the grinding tank, while soft materials are added quantitatively from the storage tank, thus optimizing the process adaptability of staged grinding.
[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0026] This invention effectively solves the problems of high energy consumption, low grinding efficiency, and uneven particle size when grinding hard and soft materials by adopting a dual-tank series design. The grinding tank is used for primary grinding of hard solid waste such as steel slag and tailings, while the storage tank is used for storing soft solid waste such as slag and lithium slag. After the hard solid waste is crushed to the predetermined particle size, soft solid waste is automatically added for mixing and grinding. This ensures grinding efficiency and avoids over-grinding of soft materials, ultimately resulting in a mixed powder with uniform particle size, which significantly improves grinding effect and energy utilization. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the combined tank of this utility model;
[0028] Figure 2 This is a schematic diagram of the overall structure of this utility model.
[0029] In the diagram: 1. Storage tank; 2. Flange; 3. Solenoid valve; 4. Grinding tank; 5. Steel ball; 6. Controller; 7. Motor; 8. Drive shaft; 9. Planetary disk; 10. Ball mill; 100. Combined tank. Detailed Implementation
[0030] 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.
[0031] Example 1
[0032] like Figure 1 , 2 As shown, a high-efficiency mixing and grinding ball mill 10 has a storage tank 1 and a grinding tank 4 arranged in series. The storage tank 1 and the grinding tank 4 are connected by a flange 2. A solenoid valve 3 is provided between the storage tank 1 and the grinding tank 4. Steel balls 5 are provided inside the grinding tank 4. The ball mill 10 also includes a controller 6 for controlling the opening and closing of the solenoid valve 3 and the grinding parameters, and a motor 7 for driving the grinding tank 4 to rotate through a transmission shaft 8.
[0033] By using a dual-tank design connected in series and a solenoid valve 3 to control the phased addition of soft materials, the problem of high energy consumption, low grinding efficiency and uneven particle size caused by hardness differences during the mixed grinding of soft and hard solid wastes in the traditional ball mill 10 is solved. This achieves precise process control by first crushing hard materials and then mixing in soft materials.
[0034] The motor 7 drives the planetary disk 9 to rotate through the transmission shaft 8, thereby driving the combined tank 100 to revolve around the sun, and the planetary disk 9 also drives the combined tank 100 to rotate on its own axis.
[0035] By driving the combined tank 100 with the planetary disk 9, the combined motion of revolution and rotation is realized, which solves the problem of uneven impact of steel balls 5 in the single rotation mode of traditional ball mill 10, so that the impact and grinding of materials by steel balls 5 is more thorough and the grinding efficiency is significantly improved.
[0036] Solenoid valve 3 is a solenoid butterfly valve equipped with a buffer chamber;
[0037] By setting a buffer chamber on the solenoid valve 3, the problem of powder gushing out due to impact force when the valve is opened and closed is solved, avoiding material waste and equipment contamination, and ensuring the stability and controllability of material addition during the grinding process.
[0038] Controller 6 is a programmable logic controller 6;
[0039] By adopting a programmable logic controller (PLC), the problem of insufficient precision in traditional manual control or simple circuit control is solved, and the automatic and precise adjustment of parameters such as grinding time, speed, and feeding timing is realized, ensuring the stability and repeatability of the grinding process.
[0040] Both storage tank 1 and grinding tank 4 are made of 304 stainless steel;
[0041] By selecting 304 stainless steel and mirror polishing the inner wall, the problem of powder adhesion inside the tank is solved, reducing material residue and pollution, while improving the corrosion resistance and service life of the equipment.
[0042] The steel ball 5 uses a multi-stage particle size combination, including a large steel ball 5 with a diameter of 20mm, a medium steel ball 5 with a diameter of 10mm, and a small steel ball 5 with a diameter of 5mm;
[0043] By using a combination of large, medium and small multi-sized steel balls 5, the problem of poor crushing effect of single-sized steel balls 5 on materials of different hardness is solved: large steel balls 5 are used to impact hard materials, while medium and small steel balls 5 are used to grind fine powder, forming a graded crushing effect, improving grinding efficiency and avoiding over-grinding.
[0044] The volume percentages of the large steel ball 5, the medium steel ball 5, and the small steel ball 5 are 30%, 40%, and 30%, respectively.
[0045] By optimizing the volume ratio of the multi-stage steel balls 5, the problem of imbalance between impact and grinding caused by unreasonable steel ball 5 ratio is solved, so that the steel balls 5 can effectively crush hard materials and fully grind soft materials during the grinding process, thus balancing grinding efficiency and energy consumption.
[0046] The storage tank 1 has a volume of 2L, and the grinding tank 4 has a volume of 3L;
[0047] By setting the volume ratio of storage tank 12L and grinding tank 43L, the problem of unreasonable material quantity control during mixed grinding of multiple solid wastes is solved. Hard materials have enough space in grinding tank 4 for primary crushing, while soft materials are added quantitatively from storage tank 1, thus optimizing the process adaptability of staged grinding.
[0048] It should be specifically noted that this utility model, through a dual-tank design connected in series and a linkage control system, achieves efficient, phased grinding of hard and soft solid waste, reducing energy consumption, improving grinding efficiency, and ensuring uniform powder particle size. The structure includes: a storage tank 1, a flange 2, a solenoid valve 3, a grinding tank 4, steel balls 5, a controller 6, a motor 7, a drive shaft 8, and a planetary disk 9. The storage tank 1 is made of 304 stainless steel with a volume of 2L. The inner wall is mirror-polished to prevent powder adhesion. The flange 2 has a nominal diameter of DN32 and connects the storage tank 1 and the grinding tank 4. A soft gasket is added to the flange 2 connection. The solenoid valve 3 is a solenoid butterfly valve. It has a buffer chamber to prevent powder from gushing out when switching on and off. The circuit of the solenoid valve 3 must be located at the stationary part of the rotating flange 2 to prevent the wire from being pulled and broken during rotation. The grinding tank 4 is made of 304 stainless steel with a volume of 3L. The steel balls 5 are made of 304 stainless steel and adopt a multi-stage particle size combination. The volume ratios of large steel balls 5 (diameter 20mm), medium steel balls 5 (diameter 10mm), and small steel balls 5 (5mm) are 30%, 40%, and 30%, respectively. The controller 6 is a programmable logic controller 6 (PLC) used to control the grinding parameters, the speed of the ball mill 10, and the switching of the solenoid valve 3 to realize the automation and precise control of the grinding process.
[0049] Specific implementation steps: Step 1: Dry the raw materials. After drying and cooling, pour the softer solid waste particles, such as lithium slag and slag, into storage tank 1. Pour the harder solid waste particles, such as steel slag and tailings, into grinding tank 4, which is already filled with steel balls 5. First, connect the solenoid valve 3 to storage tank 1 using flange 2 to ensure a seal. At this time, the solenoid valve 3 is in the closed state. Rotate storage tank 1 back to the vertical state with the outlet facing down. Then, use flange 2 bolts to tightly fit the two tanks together.
[0050] Step 2: Set the grinding parameters in the controller 6, including the grinding time, rotation speed, revolution speed, whether to grind at a constant speed, and the feeding time and feeding speed of the storage tank 1.
[0051] Step 3: After setting the grinding parameters, click the run button to start grinding. The motor 7 drives the transmission shaft 8 to make the planetary disk 9 and the combined tank 100 start to revolve. The planetary disk 9 with its own transmission system makes the combined tank 100 start to rotate. The grinding tank 4 grinds the materials while rotating, and the steel balls 5 effectively impact and grind the materials to initially break down the hard materials.
[0052] Step 4: After the powder in the grinding tank 4 reaches the initial fineness, which is the feeding time of the storage tank 1, the speed of the ball mill 10 is gradually reduced to 0, and the mill returns to its original position. At this time, the storage tank 1 is located directly above the grinding tank 4. The controller 6 turns on the power of the solenoid valve 3, the solenoid valve 3 opens, and the powder in the storage tank 1 enters the grinding tank 4 to achieve mixed grinding. The opening and closing frequency of the solenoid valve 3 is adjusted as needed to control the feeding amount.
[0053] Step 5: After the material is added, the ball mill 10 starts running again and continues grinding until the preset time is reached. After stopping the machine, turn off the self-rotation and revolution motors 7 in sequence, manually remove the grinding jar 4, and take out the evenly mixed powder.
[0054] In summary, this utility model provides an innovative solution for a high-efficiency mixing and grinding ball mill, which has broad market application prospects.
[0055] It should be noted that the parts not covered by this utility model are the same as or can be implemented using existing technology.
[0056] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art may make modifications or equivalent substitutions to the present utility model without departing from the spirit and scope of the present utility model's technical solution. Such modifications or equivalent substitutions, if they do not depart from the core design principles and functional characteristics of the present utility model, should be included within the scope of the technical solution claimed by the present utility model.
Claims
1. A high-efficiency mixing and grinding ball mill, characterized in that, The ball mill has a storage tank and a grinding tank connected in series, the storage tank and the grinding tank are connected by a flange, a solenoid valve is installed between the storage tank and the grinding tank, and steel balls are installed inside the grinding tank. The ball mill also includes a controller for controlling the switching of the solenoid valve and grinding parameters, and a motor for driving the grinding tank to rotate through a drive shaft.
2. The high-efficiency mixing and grinding ball mill according to claim 1, characterized in that, The motor drives the planetary disk to rotate via the transmission shaft, thereby driving the combined tank to revolve around the sun, and the planetary disk itself drives the combined tank to rotate on its own axis.
3. The high-efficiency mixing and grinding ball mill according to claim 1, characterized in that, The solenoid valve is a solenoid butterfly valve equipped with a buffer chamber.
4. The high-efficiency mixing and grinding ball mill according to claim 1, characterized in that, The controller is a programmable logic controller.
5. The high-efficiency mixing and grinding ball mill according to claim 1, characterized in that, Both the storage tank and the grinding tank are made of 304 stainless steel.
6. The high-efficiency mixing and grinding ball mill according to claim 1, characterized in that, The steel balls are made up of a multi-stage particle size distribution, including large steel balls with a diameter of 20mm, medium steel balls with a diameter of 10mm, and small steel balls with a diameter of 5mm.
7. A high-efficiency mixing and grinding ball mill according to claim 6, characterized in that, The volume percentages of the large, medium, and small steel balls are 30%, 40%, and 30%, respectively.
8. The high-efficiency mixing and grinding ball mill according to claim 1, characterized in that, The storage tank has a volume of 2L, and the grinding tank has a volume of 3L.