Dry and wet dual-purpose ball mill
By introducing structures such as stirring rods, circulating material pipes and negative pressure air sources into the ball mill, the problem of difficult mode switching of traditional ball mills is solved, and efficient production of dry and wet dual-purpose ball mills is achieved.
Patent Information
- Application Number
- CN202422784707.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Traditional ball mills are difficult to switch quickly between dry and wet grinding modes, resulting in low production efficiency and increased costs.
A dry and wet dual-purpose ball mill is designed. By setting up structures such as a stirring rod, a circulating material pipe, a diaphragm pump and a negative pressure air source in the grinding barrel, rapid switching between dry grinding and wet grinding modes can be achieved without large-scale modification or replacement of parts.
It realizes flexible switching between dry grinding and wet grinding modes, improves the versatility and production efficiency of the equipment, and meets the processing needs of different materials.
Smart Images
Figure CN223464889U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of ball mill, especially involve a kind of dry-wet dual-purpose ball mill. BACKGROUND
[0002] In numerous industrial fields, such as mine, metallurgy, chemical industry, building material, etc., ball mill is widely used to grind various ores and other grindable materials to obtain the required fine powder or slurry product.
[0003] Traditional ball mill is mostly designed as single dry grinding or wet grinding mode. Dry grinding ball mill is suitable for processing material with very low water content. For material with high water content, dry grinding ball mill is difficult to meet the requirements. Wet grinding ball mill is suitable for processing material with high water content and can add liquid required for subsequent processing of material in the grinding process for mixing in advance. Although part of graphite ball mill can carry out dry grinding operation, when it needs to switch to dry grinding mode to process other materials, it often needs to make complex adjustment or even replace part of components of the equipment, which is tedious and time-consuming, reduces production efficiency and increases production cost.
[0004] Therefore, there is an urgent need for a dry-wet dual-purpose ball mill capable of quickly switching between dry grinding and wet grinding modes. CONTENT OF UTILITY MODEL
[0005] The utility model aims at overcoming the deficiencies in the prior art, providing a dry-wet dual-purpose ball mill, which can quickly switch between dry grinding and wet grinding modes without large-scale modification or replacement of components, meets the processing requirements of different materials and improves production efficiency.
[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a dry-wet dual-purpose ball mill, which comprises a grinding cylinder with a built-in grinding chamber, and a stirring rod capable of stirring material is arranged in the grinding cylinder.
[0007] The top of the grinding cylinder is provided with an air inlet pipe, an air outlet pipe and a feed inlet communicated with the grinding chamber, a sealing cover capable of blocking the feed inlet is arranged on the grinding cylinder, and the air outlet pipe can be connected with a negative pressure gas source.
[0008] The bottom of the grinding chamber is connected to the medium chamber of a diaphragm pump through a first circulating pipe, and the medium chamber of the diaphragm pump can be connected to the top of the grinding chamber through a second circulating pipe.
[0009] First and second valves are arranged on the first and second circulating pipes respectively, a discharge pipe communicated with the medium chamber is arranged on the first circulating pipe between the diaphragm pump or the first valve and the diaphragm pump, and a second valve is arranged on the discharge pipe.
[0010] Optionally, the stirring rod is connected to the bottom of the grinding cavity in a vertical direction, and a scraping plate is detachably connected to the stirring rod and hung above the bottom of the grinding cavity.
[0011] When the scraping plate rotates with the stirring rod, the material deposited on the bottom of the grinding cavity can be stirred to the upper part of the grinding cavity.
[0012] Optionally, a ceramic net is arranged at the connection between the grinding cavity and the first circulating material pipe.
[0013] Optionally, the air outlet pipe can be connected to the material inlet port of the dust collector through a flange.
[0014] Optionally, the outer periphery of the grinding cylinder is covered with a first water cooling shell, a first water cooling cavity is formed between the first water cooling shell and the grinding cylinder, and a first water inlet and a first water outlet are arranged on the first water cooling shell and communicate with the first water cooling cavity.
[0015] Optionally, a second water cooling shell is sleeved on the second circulating material pipe between the first valve and the diaphragm pump, a second water cooling cavity is formed between the second water cooling shell and the second circulating material pipe, and a second water inlet and a second water outlet are arranged on the second water cooling shell and communicate with the second water cooling cavity.
[0016] Optionally, the first valve and the second valve are one-way valves.
[0017] Optionally, one end of the stirring rod extends out of the grinding cavity and is connected to the output end of the motor through a belt drive.
[0018] Compared with the prior art, the dry-wet dual-purpose ball mill after dry grinding operation can directly perform wet grinding operation after the material is completely discharged, and when the ball mill is switched from the wet grinding mode to the dry grinding mode, the residual material can be quickly discharged through the flushing of the grinding cavity and the air outlet pipe connected to the negative pressure air source, the grinding cavity and the grinding medium can be quickly dried, and after confirming that the grinding cavity and the grinding medium are dry, the first valve is closed, and the dry grinding operation can be performed. The dry-wet dual-purpose ball mill in the technical scheme can conveniently switch between dry grinding and wet grinding modes, meets different material processing requirements, and does not need to be large-scale modified or replaced during mode switching, thereby improving the versatility and production efficiency of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model will be further described below in combination with the drawings and examples.
[0020] Figure 1is a structure schematic view of the dry-wet dual-purpose ball mill connected with the dust collector in the preferred embodiment of the utility model;
[0021] Figure 2 is a front view structure schematic view of the dry-wet dual-purpose ball mill in the preferred embodiment of the utility model;
[0022] Figure 3 is a side view structure schematic view of the dry-wet dual-purpose ball mill in the preferred embodiment of the utility model;
[0023] Figure 4 is a structure schematic view of the dry-wet dual-purpose ball mill in the preferred embodiment of the utility model Figure 3 is a sectional view structure schematic view at A-A;
[0024] 1, grinding cylinder; 101, grinding cavity; 102, air inlet pipe; 103, air outlet pipe; 104, feeding port; 2, stirring rod; 3, sealing cover; 4, first circulating material pipe; 5, diaphragm pump; 6, second circulating material pipe; 7, first valve; 8, discharge pipe; 9, second valve; 10, scraping plate; 11, ceramic net; 12, dust collector; 13, first water cooling shell; 14, first water inlet; 15, first water outlet; 16, second water cooling shell; 17, second water inlet; 18, second water outlet; 19, belt; 20, motor. DETAILED DESCRIPTION
[0025] The utility model will be explained further in detail by combining with the drawings and embodiments, these drawings are all simplified schematic view, only with the schematic way the basic structure of the utility model is explained, therefore it only shows the structure related with the utility model.
[0026] It needs to be explained, if the embodiment in this embodiment has the directionality indication (such as upper, lower, bottom, top etc.), the directionality indication is only used to explain the relative position relationship, movement condition etc. between components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly. The term "first", "second" is only for the purpose of description, and can not be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly include one or more features. Unless otherwise specified and limited, the terms "set", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0027] As Figures 1-4As shown, a dry and wet ball mill includes a grinding cylinder 1 with a built-in grinding cavity 101, and a stirring rod 2 is arranged in the grinding cylinder 1 to stir the material. Specifically, the grinding cavity 101 is used to place the grinding medium and the material, one end of the stirring rod 2 extends out of the grinding cavity 101, and is drivingly connected to the output end of a motor 20 through a belt 19. The motor 20 and the stirring rod 2 are drivingly connected through the belt 19. The motor 20 can drive the stirring rod 2 to rotate at high speed to stir the material and the grinding medium, so that the material is crushed by the collision and friction of the grinding medium.
[0028] Further, the top of the grinding cylinder 1 is provided with an air inlet pipe 102, an air outlet pipe 103 and a feeding port 104 which are in communication with the grinding cavity 101, that is, the grinding cavity 101 has three outlets, the air inlet pipe 102, the air outlet pipe 103 and the feeding port 104. The grinding cylinder 1 is provided with a sealing cover 3 which can block the feeding port 104. The sealing structure between the sealing cover 3 and the feeding port 104 is a prior art, that is, a rubber gasket or the like can be added at the edge of the feeding port 104. The sealing cover 3 can be tightly fastened at the feeding port 104 by bolts, buckles or other fasteners to achieve the effect of sealing connection. After the sealing cover 3 blocks the feeding port 104, the air outlet pipe 103 is connected to a negative pressure air source, and a negative pressure closed environment is formed in the grinding cavity 101, which is only communicated with the external environment through the air inlet pipe 102. When the ball mill performs dry grinding operation, the crushed material can be discharged through the air outlet pipe 103.
[0029] Further, the bottom of the grinding cavity 101 is connected to the medium cavity of a diaphragm pump 5 through a first circulating pipe 4, and the medium cavity of the diaphragm pump 5 can be connected to the top of the grinding cavity 101 through a second circulating pipe 6. When the ball mill performs wet grinding operation, the material, the grinding medium and the liquid can enter the grinding cavity 101 through the feeding port 104. The air inlet pipe 102 and the air outlet pipe 103 do not affect the wet grinding operation, and the diaphragm pump 5 can suck the mixture of the material and the liquid in the grinding cavity 101 through the first circulating pipe 4, and then pass the mixture into the grinding cavity 101 again through the second circulating pipe 6, so that the material can be repeatedly ground for multiple times to increase the grinding effect.
[0030] In order to make the first circulating pipe 4 and the second circulating pipe 6 not affect the negative pressure closed environment required by dry grinding, the first valve 7 is arranged on the first circulating pipe 4 and the second circulating pipe 6 respectively, and by closing the first valve 7, the circulating path formed between the grinding cavity 101 and the first circulating pipe 4 and the second circulating pipe 6 can be blocked, so that the ball mill meets the needs of dry grinding operation. At the same time, the first circulating pipe 4 between the diaphragm pump 5 or the first valve 7 and the diaphragm pump 5 is provided with a discharge pipe 8 communicated with the medium cavity, and the discharge pipe 8 is provided with a second valve 9, that is, when the ball mill is in wet grinding operation, the first valve 7 on the first circulating pipe 4 and the second circulating pipe 6 can be opened, and the material can be directly discharged through the discharge pipe 8, so that the ball mill can continuously operate. When the ball mill is switched from wet grinding mode to dry grinding mode, the grinding cavity 101 can be flushed to make the residual material quickly discharged through the discharge pipe 8, and the grinding cavity 101 and the grinding medium can be quickly dried through the negative pressure gas source connected by the air outlet pipe 103, which is convenient for dry grinding operation.
[0031] In order to prevent the backflow phenomenon of the material and the liquid entering the medium cavity, the first valve 7 and the second valve 9 are one-way valves, that is, the material and the liquid can only enter the medium cavity through the first circulating pipe 4, and the material and the liquid in the medium cavity can only enter the grinding cavity 101 through the second circulating pipe 6 or be discharged through the discharge pipe 8.
[0032] The dry and wet dual-purpose ball mill in the technical scheme can be conveniently switched between dry grinding and wet grinding modes, meets different material processing requirements, and does not need to be large-scale modified or replaced in the process of mode switching, improves the universality and production efficiency of the equipment.
[0033] Further, in the technical scheme, in order to prevent the material and the grinding medium from depositing at the bottom of the grinding cavity 101, the air outlet pipe 103 is arranged on the bottom of the grinding cavity 101, and the air outlet pipe 103 is communicated with the discharge pipe 8. Figure 4As shown, the stirring rod 2 is connected to the bottom of the grinding cavity 101 in the vertical direction, and the scraping plate 10 is detachably connected to the stirring rod 2 and suspended above the bottom of the grinding cavity 101. The scraping plate 10 is inclined to the rotation axis of the stirring rod 2 and can be fixedly installed on the stirring rod 2 by bolts, and the distance from the bottom of the grinding cavity 101 can be achieved by replacing scraping plates 10 of different specifications to meet the stirring needs of different materials. At the same time, the scraping plate 10 rotates with the stirring rod 2 and performs dry grinding work, and the scraping plate 10 can shovel the material and grinding medium on the bottom of the grinding cavity 101, and can stir the material deposited on the bottom of the grinding cavity 101 to the upper part of the grinding cavity 101, so that the stirring rod 2 can effectively stir the material and grinding medium. When wet grinding is performed, the scraping plate 10 can form a vortex with the material, grinding medium and liquid in the grinding cavity 101 when it rotates with the stirring rod 2, which can effectively prevent the deposition of part of the material and grinding medium at the bottom of the grinding cavity 101, and increase the uniformity of material grinding and crushing.
[0034] Further, as shown in Figure 4 The connection between the grinding cavity 101 and the first circulating pipe 4 is provided with a ceramic screen 11, which can filter out grinding media with large particle size so that they cannot pass through the first circulating pipe 4 into the medium cavity in the diaphragm pump 5.
[0035] Further, as shown in Figure 1 The air outlet pipe 103 can be connected to the material inlet port of the dust collector 12 through a flange. The dust collector 12 is a prior art and can provide a negative pressure gas source for the air outlet pipe 103. The dust collector 12 can effectively remove and collect the material in the negative pressure air flow formed by the negative pressure gas source, purify the gas containing the material, and prevent dust pollution.
[0036] In this embodiment, as shown in Figure 3 , Figure 4As shown, in order to reduce the temperature in the grinding chamber 101 when the ball mill is in dry grinding operation, the outer periphery of the grinding cylinder 1 is covered with a first water-cooled shell 13, and a first water-cooled cavity is formed between the first water-cooled shell 13 and the grinding cylinder 1. The first water-cooled shell 13 is provided with a first water inlet 14 and a first water outlet 15 which communicate with the first water-cooled cavity. The first water inlet 14 is located below the first water outlet 15. The first water-cooled cavity can be connected to a liquid with low temperature and high specific heat capacity through the first water inlet 14. The liquid can carry away the heat of the grinding cylinder 1 and be discharged from the first water outlet 15 to achieve the purpose of cooling. Similarly, in order to reduce the temperature of the mixture of material and liquid more quickly when the ball mill is in wet grinding operation, a second water-cooled shell 16 is provided on the second circulating pipe 6 between the first valve 7 and the diaphragm pump 5. A second water-cooled cavity is formed between the second water-cooled shell 16 and the second circulating pipe 6. The second water-cooled shell 16 is provided with a second water inlet 17 and a second water outlet 18 which communicate with the second water-cooled cavity. The second water inlet 17 is located below the second water outlet 18.
[0037] Working principle: when dry grinding operation is performed, the material and grinding medium can be put into the grinding chamber 101 through the feed inlet 104. Then the feed inlet 104 is blocked by the sealing cover 3, and the first valve 7 is in the closed state. Then the motor 20 is started to stir the material and grinding medium with the stirring rod 2. After the material is crushed, the dust collector 12 is started, and the crushed material can be brought into the dust collector 12 by the negative pressure airflow to complete classification and collection. When wet grinding operation is performed, the material, liquid and grinding medium can be put into the grinding chamber 101 through the feed inlet 104. Then the motor 20 is started to stir the material and grinding medium with the stirring rod 2, and the first valve 7 is opened. The air inlet pipe 102 and the air outlet pipe 103 do not affect the wet grinding operation, and the diaphragm pump 5 can suck the mixture of material and liquid in the grinding chamber 101 through the first circulating pipe 4 and then pass it into the grinding chamber 101 through the second circulating pipe 6, so that the material can be repeatedly ground several times. After a period of time, the second valve 9 can be opened to discharge the material from the discharge pipe 8, so that the ball mill can continue to operate.
[0038] After the dry grinding operation, the dry-wet ball mill can directly perform the wet grinding operation after determining that the material is completely discharged, and when the ball mill is switched from the wet grinding mode to the dry grinding mode, the residual material can be quickly discharged through the flushing of the grinding cavity 101 and the discharge pipe 8, and the grinding cavity 101 and the grinding medium can be quickly dried through the negative pressure air source connected through the air outlet pipe 103, and after confirming that the grinding cavity 101 and the grinding medium are dry, the first valve 7 is closed, and the dry grinding operation can be performed. The dry-wet ball mill in the technical scheme can conveniently switch between the dry grinding mode and the wet grinding mode, meets different material processing requirements, and does not need to be large-scale modified or replaced during the mode switching process, thereby improving the universality and production efficiency of the equipment.
[0039] According to the ideal embodiments of the present application, the above description can be varied and modified without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims
1. A wet / dry ball mill characterized by: The grinding cylinder (1) comprises a built-in grinding cavity (101), and a stirring rod (2) capable of stirring materials is arranged in the grinding cylinder (1); A top of the grinding cylinder (1) is provided with an air inlet pipe (102), an air outlet pipe (103) and a feeding port (104) in communication with the grinding cavity (101), and a sealing cover (3) capable of blocking the feeding port (104) is arranged on the grinding cylinder (1), and the air outlet pipe (103) can be connected to a negative pressure air source. The bottom of the grinding cavity (101) is connected to a medium cavity of a diaphragm pump (5) through a first circulating pipe (4), and the medium cavity of the diaphragm pump (5) can be connected to the top of the grinding cavity (101) through a second circulating pipe (6). First valves (7) are arranged on the first circulating pipe (4) and the second circulating pipe (6) respectively, a discharge pipe (8) in communication with the medium cavity is arranged on the first circulating pipe (4) between the diaphragm pump (5) or the first valve (7) and the diaphragm pump (5), and a second valve (9) is arranged on the discharge pipe (8).
2. The hybrid ball mill according to claim 1, characterized in that: The stirring rod (2) is rotationally connected to the bottom of the grinding cavity (101) in the vertical direction, and a scraping plate (10) suspended above the bottom of the grinding cavity (101) is detachably connected to the stirring rod (2). When the scraping plate (10) rotates with the stirring rod (2), the materials deposited at the bottom of the grinding cavity (101) can be stirred to the upper part of the grinding cavity (101).
3. The hybrid ball mill according to claim 1, characterized in that: A ceramic net (11) is arranged at the connection between the grinding cavity (101) and the first circulating pipe (4).
4. The hybrid ball mill according to claim 1, characterized in that: The air outlet pipe (103) can be connected to a material inlet port of a dust collector (12) through a flange.
5. The hybrid ball mill according to claim 1, characterized in that: A first water cooling shell (13) is arranged on the outer periphery of the grinding cylinder (1), a first water cooling cavity is formed between the first water cooling shell (13) and the grinding cylinder (1), and a first water inlet (14) and a first water outlet (15) in communication with the first water cooling cavity are arranged on the first water cooling shell (13).
6. The hybrid ball mill according to claim 1, characterized in that: A second water cooling shell (16) is sleeved on the second circulating pipe (6) between the first valve (7) and the diaphragm pump (5), a second water cooling cavity is formed between the second water cooling shell (16) and the second circulating pipe (6), and a second water inlet (17) and a second water outlet (18) in communication with the second water cooling cavity are arranged on the second water cooling shell (16).
7. The hybrid ball mill according to claim 1, characterized in that: The first valve (7) and the second valve (9) are one-way valves.
8. The hybrid ball mill according to claim 1, characterized in that: One end of the stirring rod (2) extends out of the grinding cavity (101), and is drivingly connected to the output end of a motor (20) through a belt (19).