An ultrafine grinding device for testing mineral samples in geological exploration

Abstract

This utility model discloses an ultrafine grinding device for testing mineral samples in geological exploration, including a frame. A grinding chamber is fixedly installed on the inner side of the frame. Multiple resistance bars are fixedly installed on the inner wall of the grinding chamber. A main shaft is rotatably connected to the inner side of the middle of the grinding chamber. Multiple grinding arms are installed between the main shaft and the grinding chamber. Grinding hammers are installed at both ends of each grinding arm. A grinding disc is fixedly installed on the outer side of the bottom end of the main shaft. The upper surface of the grinding disc has multiple conical feeding ports. A grinding stationary disc is rotatably connected below the grinding disc. The upper surface of the grinding stationary disc has multiple arc-shaped guide ports and arc-shaped grinding protrusions. A vibrating screen is movably installed on the inner side of the bottom end of the grinding chamber. This utility model can effectively improve the refining efficiency of mineral samples and reduce waste by grinding and cyclically grinding and screening them, and facilitates rapid and precise refining of mineral samples.

Description

Technical Field

[0001] This utility model relates to the technical field of ore crushing equipment, specifically to an ultrafine grinding device for geological exploration mineral sample testing. Background Technology

[0002] In non-ferrous metal geological exploration, research institutes, and universities, ore crushing is a crucial pretreatment step for analyzing the composition and grade of non-ferrous metal ores, and the choice of method directly affects the accuracy and efficiency of subsequent analyses. Currently, mechanical crushing technologies, encompassing methods such as compression, impact, grinding, and splitting, still dominate. Meanwhile, non-mechanical crushing methods, such as blasting, ultrasonic crushing, pyrolysis, high-frequency electromagnetic wave treatment, and hydraulic crushing, are also being applied in specific scenarios.

[0003] In ore grinding, cylindrical mills are widely used due to their simple structure and ease of operation. This equipment achieves impact and grinding of materials by filling a cylindrical chamber with grinding media of different shapes and sizes (such as spheres, rods, short cylinders, and even larger ore blocks or gravel). When the cylinder rotates at a specific speed, the grinding media move with the cylinder, applying impact and grinding forces to the material, thereby refining it.

[0004] However, the ore crushing process is essentially a highly complex process of material size change, influenced by a variety of factors that are difficult to quantify. These factors include not only the ore's own physical properties, such as strength, hardness, toughness, shape, size, moisture content, density, and homogeneity, but also external conditions, such as the interaction forces between ore particles and their spatial distribution. It is worth noting that ore crushing is an irreversible and non-spontaneous process; its essence is the structural damage that occurs when the ore overcomes the cohesive forces between its internal particles under external forces. In the initial stage of stress, the ore mainly undergoes elastic deformation, at which point its internal structure is not yet damaged. As the stress increases to the elastic limit, the ore enters the plastic deformation stage; only when the stress exceeds the plastic deformation limit will the ore undergo substantial damage. This characteristic not only increases the difficulty of ore sampling and analysis but also places higher demands on the performance of crushing equipment.

[0005] Currently, traditional crushing and screening methods used in geological exploration mineral sample testing have significant limitations. Specifically, for large-sized ores, existing methods struggle to achieve efficient utilization, leading to substantial sample waste. Furthermore, due to low crushing efficiency, the fineness of the samples cannot meet the demands of rapid and precise analysis, severely restricting the overall efficiency and accuracy of the testing work. Therefore, developing a device capable of efficiently and accurately achieving ultrafine crushing of geological exploration mineral samples has become an urgent technical challenge.

[0006] To address this, we propose an innovative ultrafine pulverizing device for geological exploration mineral sample testing. By optimizing the crushing mechanism and structural design, we aim to overcome the shortcomings of existing technologies and provide a more efficient and accurate solution for geological exploration mineral sample testing. Utility Model Content

[0007] The purpose of this invention is to provide an ultrafine pulverizing device for geological exploration mineral sample testing, in order to solve the problems mentioned in the background art, where existing methods of crushing and screening for geological exploration mineral sample testing cannot effectively utilize large-sized ores, resulting in waste of mineral samples and making it inconvenient to quickly and accurately refine the mineral samples.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An ultrafine grinding device for testing geological mineral samples includes a frame, a grinding chamber fixedly installed on the inner side of the frame, multiple resistance bars fixedly installed on the inner wall of the grinding chamber, a main shaft rotatably connected to the inner side of the middle of the grinding chamber, multiple grinding arms installed between the main shaft and the grinding chamber, grinding hammers installed at both ends of each grinding arm, a grinding disc fixedly installed on the outer side of the bottom end of the main shaft, multiple conical feeding ports on the upper end face of the grinding disc, a grinding stationary disc rotatably connected below the grinding disc, and multiple arc-shaped guide ports and arc-shaped grinding protrusions on the upper end face of the grinding stationary disc;

[0010] A vibrating screen is movably installed on the inner side of the bottom of the crushing box, and a rotary conveyor is fixedly installed on the lower part of one side of the crushing box. A rotary motor is fixedly installed on the front end of the rotary conveyor, and a lever is rotatably connected to the inner side of the rotary conveyor.

[0011] The bottom end of the main shaft passes through multiple crushing arms, a grinding moving plate, and a grinding stationary plate, and is rotatably connected to the bottom end of the crushing box. The main shaft is fixedly connected to multiple crushing arms, and the crushing arms are fixedly connected to the crushing hammer by screws. The crushing hammer is made of high manganese alloy steel. The length of the multiple crushing arms increases sequentially from top to bottom along the axis of the main shaft. The multiple resistance bars are arranged in a circle relative to the axis of the main shaft.

[0012] The grinding plate is fixedly connected to the crushing box. The bottom end of the rotary conveyor chamber passes through the crushing box and is inserted between the grinding plate and the vibrating screen. The upper end of the rotary conveyor chamber passes through the crushing box and is inserted between two resistance bars. The output end of the rotary motor is fixedly connected to the middle of the actuating frame. The actuating frame rotates counterclockwise.

[0013] The frame is fixedly equipped with a feeding bin. Feeders are rotatably connected to the inner sides of the two bottom ends of the feeding bin. A feeding motor is installed on one side of the feeder. The upper end of the frame is fixedly connected to the two feeding motors. The output end of the feeding motor passes through the frame and the crushing chamber and is fixedly connected to the feeder. The bottom end of the feeding bin is connected to the interior of the crushing chamber.

[0014] A crushing motor is fixedly installed on one side of the frame. Both the upper end of the main shaft and the output end of the crushing motor are provided with pulleys. A belt is provided between the two pulleys. The upper end of the main shaft and the output end of the crushing motor are connected by the belt and the two pulleys.

[0015] The bottom of the crushing box is provided with two discharge ports, and a vibrator is fixedly installed between the two discharge ports. The vibrator is fixedly connected to the crushing box, and the output end of the vibrator is fixedly connected to a vibrating screen. The vibrating screen can pass particles with a diameter of 0.03mm-0.05mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model's uniform feeder ensures that material supply and crushing operations are synchronized, effectively preventing material jamming and bulging. The equipment adopts a compact structural design, supports on-site immediate crushing operations, and significantly reduces material transfer costs.

[0018] 1. This utility model uses a main shaft to synchronously drive multiple crushing hammers to rotate and collide with the ore through the crushing arms. Multiple resistance bars arranged in a circle are fixedly installed on the inner wall of the crushing box, and the length of the multiple crushing arms increases sequentially from top to bottom along the axis of the main shaft, so that the multiple crushing hammers form a graded collision crushing effect. At the same time, the crushing arms made of special wear-resistant material and the high-speed rotating structure (different from the low-speed extrusion crushing of traditional toothed rollers) significantly improve the efficiency of ore splitting and crushing.

[0019] 2. The pre-crushed ore is guided through the conical feed port to the grinding disc between the grinding moving disc and the grinding stationary disc. Then, when the main shaft drives the grinding moving disc to rotate relative to the grinding stationary disc, the grinding moving disc and multiple arc-shaped grinding protrusions can further refine and grind the ore, forming a multi-stage crushing-grinding collaborative operation mode.

[0020] 3. This utility model uses a vibrator to drive a vibrating screen to screen the refined ore, which can precisely control the degree of ore crushing. The rotary motor drives the actuating frame to rotate counterclockwise inside the rotary conveying chamber. The rotary conveying chamber can then return the ore remaining after screening to the grinding disc through the actuating frame, which facilitates the ore to be refined in a cyclic manner. The counterclockwise rotation can transport the remaining ore back to the grinding disc, forming a cyclic crushing mechanism, which avoids the accumulation of ore on the upper surface of the vibrating screen and increases the amount of ore refined.

[0021] Therefore, this utility model achieves efficient crushing, precise grinding, and cost optimization through a graded crushing, grinding-screening-reflux closed-loop system, uniform feeding process, and on-site real-time operation design. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of the entire utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of the crushing box of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the grinding disc of this utility model.

[0026] In the diagram: 1. Frame; 2. Feed bin; 3. Feeder; 4. Feed motor; 5. Crushing motor; 6. Crushing box; 7. Rotary conveyor bin; 8. Main shaft; 9. Crushing arm; 10. Crushing hammer; 11. Rotary motor; 12. Resistance bar; 13. Vibrating screen; 14. Vibrator; 15. Discharge port; 16. Actuating frame; 17. Grinding disc; 18. Grinding disc; 19. Conical discharge port; 20. Arc-shaped guide port; 21. Arc-shaped grinding protrusion. Detailed Implementation

[0027] 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 scope of protection of the present utility model.

[0028] The feeding motor 4 (model GV50-3.7KW-60-S), crushing motor 5 (model YEJ3-112M-4), rotary motor 11 (model KOM7080) and vibrator 14 (model JZO-50-4) mentioned in this utility model can all be purchased from the market or customized privately.

[0029] Please see Figure 1 and Figure 2 This utility model provides an embodiment of an ultrafine pulverizing device for geological exploration mineral sample testing, comprising a frame 1, a pulverizing chamber 6 fixedly installed on the inner side of the frame 1, a feeding bin 2 fixedly installed on the frame 1, a feeder 3 rotatably connected to the inner side of each of the two bottom ends of the feeding bin 2, a feeding motor 4 installed on one side of the feeder 3, the upper end of the frame 1 fixedly connected to the two feeding motors 4, the output end of the feeding motor 4 passing through the frame 1 and the pulverizing chamber 6 and fixedly connected to the feeder 3, the bottom end of the feeding bin 2 being connected to the interior of the pulverizing chamber 6, and the ore feeding rate being adjusted by controlling the rotation speed of the feeder 3;

[0030] Multiple resistance bars 12 are fixedly installed on the inner wall of the crushing chamber 6. A main shaft 8 is rotatably connected to the inner side of the middle part of the crushing chamber 6. A crushing motor 5 is fixedly installed on one side of the frame 1. Both the upper end of the main shaft 8 and the output end of the crushing motor 5 are provided with pulleys. A belt is provided between the two pulleys. The upper end of the main shaft 8 and the output end of the crushing motor 5 are connected by a belt and two pulleys, so that the crushing motor 5 drives the main shaft 8 to rotate under the support of the frame 1 through the belt and pulleys.

[0031] Please see Figures 2 to 4 Multiple crushing arms 9 are installed between the main shaft 8 and the crushing box 6. Crushing hammers 10 are installed at both ends of the crushing arms 9. A grinding moving plate 17 is fixedly installed on the outer side of the bottom end of the main shaft 8. A grinding stationary plate 18 is rotatably connected below the grinding moving plate 17. The bottom end of the main shaft 8 passes through multiple crushing arms 9, grinding moving plate 17 and grinding stationary plate 18 and is rotatably connected to the bottom end of the crushing box 6. The main shaft 8 is fixedly connected to multiple crushing arms 9. The crushing arms 9 are fixedly connected to the crushing hammers 10 by screws. The crushing hammers 10 are made of high manganese alloy steel. The length of multiple crushing arms 9 increases sequentially from top to bottom along the axis of the main shaft 8. Multiple resistance bars 12 are arranged in a circle relative to the axis of the main shaft 8. Multiple crushing hammers 10 can sequentially crush the ore to different degrees through the resistance bars 12.

[0032] The upper end face of the grinding disc 17 is provided with multiple conical feeding ports 19. The grinding fixed disc 18 is fixedly connected to the crushing box 6. The upper end face of the grinding fixed disc 18 is provided with multiple arc-shaped guide ports 20 and arc-shaped grinding protrusions 21. The grinding disc 17 and multiple arc-shaped grinding protrusions 21 can further refine and grind the ore, and it falls through multiple arc-shaped guide ports 20.

[0033] Please see Figure 3 A vibrating screen 13 is movably installed on the inner side of the bottom of the crushing box 6. The bottom of the crushing box 6 is provided with two discharge ports 15. A vibrator 14 is fixedly installed between the two discharge ports 15. The vibrator 14 is fixedly connected to the crushing box 6. The output end of the vibrator 14 is fixedly connected to the vibrating screen 13. The vibrating screen 13 can pass through particles with a diameter of 0.03mm-0.05mm. The vibrator 14 drives the vibrating screen 13 to vibrate and screen the refined ore, which can precisely control the degree of ore crushing.

[0034] Please see Figure 2 A rotary conveyor 7 is fixedly installed on the lower part of one side of the crushing chamber 6. A rotary motor 11 is fixedly installed on the front end of the rotary conveyor 7. A toggle frame 16 is rotatably connected to the inner side of the rotary conveyor 7. The bottom end of the rotary conveyor 7 passes through the crushing chamber 6 and is inserted between the grinding plate 18 and the vibrating screen 13. The upper end of the rotary conveyor 7 passes through the crushing chamber 6 and is inserted between two resistance bars 12. The output end of the rotary motor 11 is fixedly connected to the middle of the toggle frame 16. The toggle frame 16 rotates counterclockwise. The rotary conveyor 7 can return the ore remaining after screening to the grinding plate 17 through the toggle frame 16, which facilitates the cyclic refining operation of the ore.

[0035] When using this equipment, to crush and test geological exploration mineral samples, the ore is placed inside the feed hopper 2, the power is turned on, and the two feeding motors 4 are started. Under the support of the frame 1, the feeding motors 4 drive the feeder 3 to rotate inside the bottom of the feed hopper 2 and transport the ore to the inside of the crushing box 6. The feeding rate of the ore can be adjusted by controlling the speed of the feeder 3. The crushing motor 5 is started, and under the support of the frame 1, the crushing motor 5 drives the main shaft 8 to rotate through the belt and pulley. Then, the main shaft 8 drives multiple crushing hammers 10 to rotate through the crushing arm 9 and collide with the ore.

[0036] Multiple resistance bars 12 arranged in a circular pattern are fixedly installed on the inner wall of the crushing chamber 6, and the length of multiple crushing arms 9 increases sequentially from top to bottom along the axis of the main shaft 8. Thus, multiple crushing hammers 10 can sequentially crush the ore to different degrees through the resistance bars 12. A conical feed port 19 is provided on the upper end face of the grinding disc 17, so that the grinding disc 17 can guide the initially refined ore to the space between the grinding disc 17 and the grinding fixed disc 18 through the conical feed port 19. Thus, when the main shaft 8 drives the grinding disc 17 to rotate relative to the grinding fixed disc 18;

[0037] The grinding disc 17 and multiple arc-shaped grinding protrusions 21 can further refine and grind the ore, which falls through multiple arc-shaped guide ports 20. At the same time, the vibrator 14 drives the vibrating screen 13 to vibrate and screen the refined ore, which can precisely control the degree of ore crushing. Simultaneously, the rotary motor 11 is started, which drives the actuating frame 16 to rotate counterclockwise inside the rotary conveying chamber 7. The rotary conveying chamber 7 can then return the ore remaining after screening to the grinding disc 17 through the actuating frame 16, which facilitates the ore to be circulated and refined, avoids the accumulation of ore on the upper surface of the vibrating screen 13 and increases the amount of ore refined.

[0038] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. 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.

[0039] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A kind of geology and prospecting ore sample detects superfine grinding device, including frame (1), it is characterized in that: The inner side of the frame (1) is fixedly installed with a crushing box (6). Multiple resistance bars (12) are fixedly installed on the inner wall of the crushing box (6). The inner side of the middle part of the crushing box (6) is rotatably connected with a main shaft (8). Multiple crushing arms (9) are installed between the main shaft (8) and the crushing box (6). Crushing hammers (10) are installed at both ends of the crushing arms (9). A grinding disc (17) is fixedly installed on the outer side of the bottom end of the main shaft (8). Multiple conical feeding ports (19) are provided on the upper end surface of the grinding disc (17). A grinding stationary disc (18) is rotatably connected below the grinding disc (17). Multiple arc-shaped guide ports (20) and arc-shaped grinding protrusions (21) are provided on the upper end surface of the grinding stationary disc (18). A vibrating screen (13) is movably installed on the inner side of the bottom end of the crushing box (6). A rotary conveyor (7) is fixedly installed on the lower part of one side of the crushing box (6). A rotary motor (11) is fixedly installed on the front end face of the rotary conveyor (7). A lever frame (16) is rotatably connected to the inner side of the rotary conveyor (7).

2. The device for detecting ultrafine crushed ore sample in geological exploration according to claim 1, characterized in that: The bottom end of the main shaft (8) passes through multiple crushing arms (9), grinding moving disc (17) and grinding stationary disc (18) and is rotatably connected to the bottom end of the crushing box (6). The main shaft (8) is fixedly connected to multiple crushing arms (9). The crushing arms (9) are fixedly connected to the crushing hammer (10) by screws. The crushing hammer (10) is made of high manganese alloy steel. The length of multiple crushing arms (9) increases sequentially from top to bottom along the axis of the main shaft (8). Multiple resistance bars (12) are arranged in a circle relative to the axis of the main shaft (8).

3. The device for detecting ultrafine crushed ore sample in geological exploration according to claim 2, characterized in that: The grinding plate (18) is fixedly connected to the crushing box (6). The bottom end of the rotary conveyor (7) passes through the crushing box (6) and is inserted between the grinding plate (18) and the vibrating screen (13). The upper end of the rotary conveyor (7) passes through the crushing box (6) and is inserted between two resistance bars (12). The output end of the rotary motor (11) is fixedly connected to the middle of the actuating frame (16). The actuating frame (16) rotates counterclockwise.

4. The device for detecting super-fine crushed ore sample in geological exploration of claim 3, wherein: The frame (1) is fixedly equipped with a feeding bin (2). The inner sides of the two bottom ends of the feeding bin (2) are rotatably connected to feeders (3). A feeding motor (4) is installed on one side of the feeder (3). The upper end of the frame (1) is fixedly connected to the two feeding motors (4). The output end of the feeding motor (4) passes through the frame (1) and the crushing box (6) and is fixedly connected to the feeder (3). The bottom end of the feeding bin (2) is connected to the interior of the crushing box (6).

5. The device for detecting super-fine crushed ore sample in geological exploration according to claim 4, characterized in that: A crushing motor (5) is fixedly installed on one side of the frame (1). Both the upper end of the main shaft (8) and the output end of the crushing motor (5) are provided with pulleys. A belt is provided between the two pulleys. The upper end of the main shaft (8) and the output end of the crushing motor (5) are connected by the belt and the two pulleys.

6. The device for detecting super-fine crushed ore sample in geological exploration of claim 5, characterized in that: The bottom of the crushing box (6) is provided with two discharge ports (15), and a vibrator (14) is fixedly installed between the two discharge ports (15). The vibrator (14) is fixedly connected to the crushing box (6), and the output end of the vibrator (14) is fixedly connected to the vibrating screen (13). The vibrating screen (13) can pass through particles with a diameter of 0.03mm-0.05mm.

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