A premixing and multi-point self-flowing dispensing device for a floatation reagent

Abstract

The utility model relates to the technical field of the pre-mixing and accurate distribution of medicament, disclose a kind of for the pre-mixing and multi-point self-flow distribution device of flotation medicament, the top of shunt disc is fixedly installed with premixing hopper, the inside of support is provided with water distribution pipe, and the side of water distribution pipe is installed with dispensing tube, and the water outlet of water distribution pipe and dispensing tube all extends to the inside of premixing hopper, premixing dilution and multi-point self-flow type even distribution device are formed based on grid disc, inner disc, shunt disc, premixing hopper, water distribution pipe, dispensing tube, central shaft, medicine discharging pipe and medicine distribution pipe, realize set premixing dilution, rotary conveying, grid type even distribution and multi-point self-flow conveying function in one, rely on gravity conveying, mix fully, distribution accurate, so that each flotation process point can obtain stable, continuous, accurate medicament supply, reduce medicament dosage, improve medicament utilization efficiency, suitable for large-scale flotation process of various concentrators.

Description

Technical Field

[0001] This utility model relates to the technical field of reagent premixing and precise distribution, specifically a premixing and multi-point gravity distribution device for flotation reagents. Background Technology

[0002] Flotation is a mineral processing method that utilizes the differences in the physicochemical properties of mineral surfaces (mainly wettability). By adding flotation reagents, the surface characteristics of minerals are altered, making the valuable minerals (or gangue minerals) hydrophobic and aerophilic. Using air bubbles as carriers, these minerals are floated out of the pulp, thus separating the valuable minerals from the gangue minerals. Currently, in the flotation process of gold and copper mines, flotation reagents such as xanthate, black reagent, pine oil, and No. 2 oil need to be continuously, stably, and uniformly added to multiple flotation cells according to process requirements. The current traditional equipment is mostly: intermittent pulse dosing device, central rotary distributor (commonly known as a reagent dispenser), and manual valve + distribution disc type reagent dropper. The existing equipment generally suffers from the following problems: insufficient mixing of reagent stock solution and dilution water, large concentration fluctuations, simple distribution plate structure, relying solely on mechanical rotation and gravity distribution, resulting in low distribution accuracy, the flow rate of each outlet cannot be adjusted individually and the flow rate is uneven, the inconsistent pipeline lengths lead to severe delays, affecting flotation indicators, the equipment cannot be disassembled, is prone to clogging and maintenance is difficult, and it is difficult to achieve accurate quantitative distribution, thus affecting the recovery rate and reagent utilization efficiency. For the reasons mentioned above, existing distribution equipment can no longer meet the requirements of modern mineral processing plants for automation, stability, chemical saving and improved recovery rate. Therefore, it is necessary to provide a new type of premixing distribution device with a more reasonable structure, more thorough mixing, more uniform distribution and more stable operation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a premixing and multi-point gravity distribution device for flotation reagents, which solves the problems of incomplete mixing, uneven distribution, uncontrollable flow rate, large delay, serious deviation, easy clogging, and high maintenance requirements of traditional devices.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a premixing and multi-point gravity distribution device for flotation reagents, comprising a distribution platform and a support, wherein the support is fixedly installed on the top of the distribution platform, and a grid plate is embedded in the top of the distribution platform, and an inner plate is provided on the inner side of the grid plate, a diversion plate is provided on the outer side of the top of the inner plate, a premixing funnel is fixedly installed on the top of the diversion plate, a water distribution pipe is provided on the inner side of the support, and a reagent distribution pipe is installed on one side of the water distribution pipe, and the outlet ends of both the water distribution pipe and the reagent distribution pipe extend to the inner side of the premixing funnel; A central shaft is fixedly connected to the inner side of the premixing funnel. The top of the central shaft is detachably connected to the drive shaft through a coupling sleeve. The top of the drive shaft is connected to the output shaft of the drive motor mounted on the top of the bracket. A dispensing pipe is connected to one side of the bottom of the premixing funnel. Several sets of dispensing grids are connected at equal angles between the grid plate and the inner plate. The bottom of the inner side of the grid plate and the inner plate forms a flow channel through two adjacent dispensing grids, and a dispensing pipe is connected to the bottom of each flow channel.

[0005] As a preferred technical solution of the premixing and multi-point gravity distribution device for flotation reagents according to this utility model, the discharge direction of the water distribution pipe and the reagent distribution pipe is directly opposite to the inner wall of the premixing funnel. The water distribution pipe and the reagent distribution pipe are respectively connected to the external water supply and reagent supply pipes, and the water distribution pipe and the reagent distribution pipe simultaneously deliver water and raw reagent to the premixing funnel. The premixing funnel has an inverted conical structure, and the grid plate, inner plate and diversion plate together form a distribution plate structure.

[0006] As a preferred technical solution of the premixing and multi-point gravity distribution device for flotation reagents according to this utility model, the drive motor drives the premixing funnel, the distribution plate and the distribution pipe to rotate through the transmission shaft, the connecting sleeve and the central shaft. The bottom of the flow channel is connected to the corresponding position of the distribution pipe. The length of the distribution pipe is arranged according to the on-site pipeline, and the reagent is gravity-transported to the flotation cell.

[0007] As a preferred technical solution of the premixing and multi-point gravity distribution device for flotation reagents of this utility model, the distribution grid is provided with an interlocking groove, and a partition is embedded and connected to the inner side of the interlocking groove. The top of the dispensing tube is detachably connected to the inside of the connecting tube, and a shut-off valve is installed on the top of the connecting tube.

[0008] As a preferred technical solution of the premixing and multi-point gravity distribution device for flotation reagents of this utility model, the partition is tightly fitted and connected to the inner wall of the fitting groove, the two distribution grids divide the inner side of the grid plate and the inner plate to form a fan-shaped distribution area, and the shut-off valve at the top of the connecting pipe seals the bottom of the corresponding fan-shaped distribution area.

[0009] As a preferred technical solution of the premixing and multi-point gravity distribution device for flotation reagents according to this utility model, a transmission seat is installed at the top center of the distribution platform, the bottom of the diverter plate is connected to the transmission seat through a transmission block, the top of the central shaft is detachably connected to the connecting sleeve through a transmission key, and a pin is provided on the side of the transmission key. Slide grooves are provided on both sides of the top of the connecting sleeve, and the bottom of the transmission shaft slides along the slide grooves through a connecting bolt.

[0010] As a preferred technical solution of the premixing and multi-point gravity distribution device for flotation reagents according to this utility model, the pin locks the transmission key at the top of the central shaft and the bottom of the connecting sleeve. The transmission shaft slides along the inside of the connecting sleeve, the connecting bolt slides along the slide groove, and the connecting bolt limits the connection of the transmission shaft to the inside of the connecting sleeve.

[0011] Compared with the prior art, this utility model provides a premixing and multi-point gravity distribution device for flotation reagents, which has the following beneficial effects: 1. Water and raw reagents are conveniently transported to the premixing funnel via water and reagent distribution pipes, allowing for preliminary dilution and mixing of the reagents within the funnel. This premixing process, completed before distribution, significantly reduces the instability in recovery rates caused by fluctuations in the raw reagent concentration. Distribution uniformity is significantly improved. Combined with the discharge pipe and distribution plate, the mixed reagents are evenly distributed to each sector distribution area, achieving reagent segmentation, buffering, and flow equalization. This ensures uniform reagent distribution, consistent reagent supply at each addition point, and more stable flotation parameters. The combination of the flow channel and distribution pipe allows for even distribution of reagents to each flotation cell via gravity flow. The structure is simple, highly reliable, and eliminates complex regulating valves and components. The gravity flow method is stable and reliable, suitable for high-dust and high-corrosion environments, and can accommodate various reagent types. It significantly reduces reagent consumption, ensures stable reagent supply, improves flotation efficiency, and saves reagent usage.

[0012] 2. By setting multiple distribution grids between the grid plate and the inner plate, the inner space between them can be easily divided into multiple fan-shaped distribution areas. When it is necessary to adjust the distribution ratio, simply remove the partition in the corresponding meshing groove of the distribution grid to connect the two adjacent fan-shaped distribution areas, and close the connection of the bottom discharge pipe of the fan-shaped distribution area through the shut-off valve. This allows for convenient adjustment of the drug distribution ratio. When the partition is installed, it is tightly embedded in the meshing groove of the distribution grid to maintain tightness and facilitate the division into multiple independent fan-shaped distribution areas. This allows for easy adjustment of the drug distribution ratio according to needs, achieving uniform distribution and on-demand adjustment.

[0013] 3. The transmission seat and transmission block facilitate the connection and transmission between the bottom of the distribution plate and the distribution table. The transmission key and pin facilitate the connection between the central shaft and the coupling sleeve. At the same time, the slide groove and connecting bolt allow the transmission shaft to slide within the coupling sleeve. This facilitates the connection and transmission while also allowing the coupling sleeve to move upwards at the bottom of the transmission shaft. This makes it easy to disassemble the coupling sleeve from the central shaft, as well as the transmission block and transmission seat. It also facilitates the disassembly of the distribution plate and the premixing funnel, making cleaning and maintenance more convenient, avoiding long-term accumulation of dirt and blockage, ensuring stable material supply for a long time. At the same time, the connection is simple and easy to operate, facilitating quick assembly, ensuring stable transmission, and ensuring the premixing effect of the premixing funnel.

[0014] In summary, a premixing and dilution device with multi-point gravity-flow uniform distribution is constructed based on a grid plate, inner plate, distribution plate, premixing funnel, water distribution pipe, reagent distribution pipe, central shaft, discharge pipe, and distribution pipe. This device integrates premixing and dilution, rotary conveying, grid-type uniform distribution, and multi-point gravity-flow conveying functions. Relying on gravity conveying, it ensures thorough mixing and precise distribution, enabling each flotation process point to obtain a stable, continuous, and accurate reagent supply. This reduces reagent consumption, improves reagent utilization efficiency, and is suitable for large-scale flotation processes in various mineral processing plants. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the installation structure of the premixed funnel of this utility model.

[0017] Figure 3 This is a schematic diagram of the installation structure of the diverter plate of this utility model.

[0018] Figure 4 This is a schematic diagram of the installation structure of the central shaft of this utility model.

[0019] Figure 5 This is a schematic diagram of the dispensing tube of this utility model.

[0020] In the diagram: 1. Distribution platform; 2. Support; 3. Grille; 4. Inner plate; 5. Diverter plate; 6. Premixing funnel; 7. Water distribution pipe; 8. Medicine distribution pipe; 9. Central shaft; 10. Coupling sleeve; 11. Drive shaft; 12. Drive motor; 13. Medicine discharge pipe; 14. Distribution grille; 15. Flow channel; 16. Medicine distribution pipe; 17. Fitting groove; 18. Partition plate; 19. Connecting pipe; 20. Gate valve; 21. Transmission seat; 22. Transmission block; 23. Transmission key; 24. Pin; 25. Slide groove; 26. Connecting bolt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0022] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0023] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Example: Please refer to Figure 1-5 This utility model provides the following technical solution: a premixing and multi-point gravity distribution device for flotation reagents, comprising a distribution platform 1 and a support 2. The support 2 is fixedly installed on the top of the distribution platform 1, and a grid plate 3 is embedded in the top of the distribution platform 1. An inner plate 4 is provided inside the grid plate 3, and a diversion plate 5 is provided on the outer side of the top of the inner plate 4. A premixing funnel 6 is fixedly installed on the top of the diversion plate 5. A water distribution pipe 7 is provided inside the support 2, and a reagent distribution pipe 8 is installed on one side of the water distribution pipe 7. The discharge direction of pipes 7 and 8 is directly facing the inner wall of the premixing funnel 6. Pipes 7 and 8 are connected to external water supply and drug supply pipes respectively. Pipes 7 and 8 simultaneously deliver water and raw drug to the premixing funnel 6. The premixing funnel 6 has an inverted cone structure. The grid plate 3, inner plate 4 and distribution plate 5 together form a distribution plate structure, which makes the liquid flow form a stable rotating water curtain on the inner wall, so as to promote the full dilution and mixing of the agent and water. The outlet ends of pipes 7 and 8 extend to the inner side of the premixing funnel 6. A central shaft 9 is fixedly connected to the inner side of the premixing funnel 6. The top of the central shaft 9 is detachably connected to the drive shaft 11 via a coupling sleeve 10. The top of the drive shaft 11 is connected to the output shaft of the drive motor 12 mounted on the top of the bracket 2. A dispensing pipe 13 is connected to one side of the bottom of the premixing funnel 6. Several sets of dispensing grids 14 are connected at equal angles between the grid plate 3 and the inner plate 4. The bottom of the inner side of the grid plate 3 and the inner plate 4 forms a flow channel 15 through two adjacent dispensing grids 14, and a dispensing pipe 1 is connected to the bottom of each flow channel 15. 6. The drive motor 12 drives the premixing funnel 6, the distribution plate 5, and the dispensing pipe 16 to rotate through the transmission shaft 11, the connecting sleeve 10, and the central shaft 9. The bottom of the flow channel 15 is connected to the corresponding dispensing pipe 16. The length of the dispensing pipe 16 is arranged according to the on-site pipeline. The liquid is conveyed by gravity to the flotation cell, which facilitates the synchronous rotation of the distribution plate 5, the premixing funnel 6, and the dispensing pipe 13 through the transmission shaft 11, the connecting sleeve 10, and the central shaft 9. It also facilitates the dispensing of the distributed liquid through the corresponding flow channel 15 and dispensing pipe 16.

[0026] The distribution grid 14 has a fitting groove 17 inside, and a partition 18 is embedded and connected to the inner side of the fitting groove 17. The top of the dispensing tube 16 is detachably connected to the inside of the connecting tube 19, and a shut-off valve 20 is installed on the top of the connecting tube 19. The partition 18 is tightly fitted to the inner wall of the fitting groove 17. Two dispensing grids 14 divide the inner sides of the grid plate 3 and the inner plate 4 to form a fan-shaped dispensing area. The shut-off valve 20 at the top of the connecting tube 19 seals the bottom of the corresponding fan-shaped dispensing area. By removing the partition 18 in the fitting groove 17 inside the corresponding dispensing grid 14, the two adjacent fan-shaped dispensing areas are connected. The shut-off valve 20 closes the connection of the dispensing tube 13 at the bottom of the fan-shaped dispensing area, thereby enabling convenient adjustment of the drug solution distribution ratio.

[0027] A transmission seat 21 is installed at the top center of the distribution platform 1. The bottom of the distribution plate 5 is connected to the transmission seat 21 via a transmission block 22. The top of the central shaft 9 is detachably connected to the connecting sleeve 10 via a transmission key 23, and a pin 24 is provided on the side of the transmission key 23. Slide grooves 25 are provided on both sides of the top of the connecting sleeve 10. The bottom of the transmission shaft 11 slides along the slide grooves 25 via a connecting bolt 26. The pin 24 locks the transmission key 23 at the top of the central shaft 9 and the bottom of the connecting sleeve 10. The drive shaft 11 slides along the inside of the coupling sleeve 10, and the connecting bolt 26 slides along the slide groove 25. The connecting bolt 26 limits the connection of the drive shaft 11 to the inside of the coupling sleeve 10, which facilitates the disassembly of the diverter plate 5 and the premixing funnel 6, making cleaning and maintenance more convenient, avoiding long-term accumulation of dirt and blockage, and ensuring stable material supply for a long time. At the same time, this connection method is simple and easy to operate. The central shaft 9, the coupling sleeve 10, and the drive shaft 11 can be quickly assembled to ensure stable transmission and further ensure the premixing effect of the premixing funnel 6.

[0028] The working principle and usage process of this utility model are as follows: The specific usage process includes a premixing process, a discharging process, a flow equalization process, and a gravity conveying process. Specifically, in the premixing process, the water distribution pipe 7 and the discharging pipe 8 are first connected to the external water supply pipe and the drug supply pipe. Then, the drive motor 12 is started, and the flow divider 5, the premixing funnel 6, and the discharging pipe 13 are driven to rotate synchronously through the transmission shaft 11, the coupling sleeve 10, and the central shaft 9. Water and raw materials are simultaneously supplied to the premixing funnel 6 through the water distribution pipe 7 and the medicine distribution pipe 8. The premixing funnel 6 has a conical structure and forms a stable mixing zone inside, so that the liquid flow forms a stable rotating water curtain on the inner wall, which promotes the full dilution and mixing of the medicine and water. During the discharge process, the medicine mixed inside the premixing funnel 6 enters the discharge pipe 13 from the bottom of the premixing funnel 6. During the flow distribution process, the discharge pipe 13 and the premixing funnel 6 are both fixed to the central shaft 9 and rotate synchronously with the shaft. During the rotation, the medicine enters the distribution plate 5 in a spiral drop shape, and flows into the fan-shaped distribution area formed by the grid plate 3, the inner plate 4 and the distribution grid 14 through the distribution plate 5. The fan-shaped distribution area divides the medicine liquid evenly. As the distribution plate 5 rotates steadily and slowly with the central axis 9, it ensures that the amount of liquid medicine flowing into each sector distribution area tends to be consistent. During the gravity flow process, the flow channel 15 at the bottom of each sector distribution area is connected to the distribution pipe 16, and the liquid medicine flows into the corresponding distribution pipe 16. The length of the distribution pipe 16 can be arranged according to the on-site pipeline, and the liquid medicine can be gravity flowed to multiple flotation cell addition points. The grid plate 3 and the inner plate 4 are separated by multiple distribution grids 14 to form sector distribution areas. When it is necessary to adjust the distribution ratio, it is only necessary to remove the partition plate 18 in the inner fitting groove 17 of the corresponding distribution grid 14 to connect the two adjacent sector distribution areas, and close the connection of the bottom discharge pipe 13 of the sector distribution area through the shut-off valve 20. In this way, the distribution ratio of the liquid medicine can be conveniently adjusted. Specifically, when there are five sections in the grid plate 3 and inner plate 4, the five-section distribution grid 14 divides the grid plate 3 and inner plate 4 into five fan-shaped distribution areas. After removing the partition 18 in two adjacent distribution grids 14, one fan-shaped distribution area in the grid plate 3 and inner plate 4 occupies 60%, and the other fan-shaped distribution area occupies 40%. During the rotation and delivery of the medicine, uniform distribution is achieved. 100ml of medicine enters per minute. After the medicine rotates once, the 40% fan-shaped distribution area distributes 40ml of medicine, and the 60% fan-shaped distribution area distributes 60ml of medicine, so as to achieve on-demand adjustment and distribution. In addition, the transmission seat 21 and transmission block 22 facilitate the connection and transmission between the bottom of the diversion plate 5 and the distribution table 1. The transmission key 23 and pin 24 facilitate the connection between the central shaft 9 and the connecting sleeve 10. The slide groove 25 and connecting bolt 26 allow the transmission shaft 11 to slide within the connecting sleeve 10, so as to facilitate the connection and transmission while the connecting sleeve 10 can move upward at the bottom of the transmission shaft 11, thereby facilitating the disassembly of the connecting sleeve 10 and the central shaft 9. The disassembly between the transmission block 22 and the transmission seat 21 facilitates the disassembly of the diversion plate 5 and the premixing funnel 6, making cleaning and maintenance more convenient, avoiding long-term accumulation of dirt and blockage, and ensuring stable material supply for a long time.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A premixing and multi-point gravity distribution device for flotation reagents, comprising a distribution table (1) and a support (2), characterized in that: A bracket (2) is fixedly installed on the top of the distribution platform (1), and a grid plate (3) is embedded in the top of the distribution platform (1). An inner plate (4) is provided on the inner side of the grid plate (3). A diversion plate (5) is provided on the outer side of the top of the inner plate (4). A premixing funnel (6) is fixedly installed on the top of the diversion plate (5). A water distribution pipe (7) is provided on the inner side of the bracket (2), and a dosing pipe (8) is installed on one side of the water distribution pipe (7). The outlet ends of the water distribution pipe (7) and the dosing pipe (8) extend to the inner side of the premixing funnel (6). The inner side of the premixed funnel (6) is fixedly connected to a central shaft (9). The top of the central shaft (9) is detachably connected to the drive shaft (11) through a coupling sleeve (10). The top of the drive shaft (11) is connected to the output shaft of the drive motor (12) installed on the top of the bracket (2). A drug discharge pipe (13) is connected to one side of the bottom of the premixed funnel (6). Several sets of distribution grids (14) are connected at equal angles between the grid plate (3) and the inner plate (4). The bottom of the inner side of the grid plate (3) and the inner plate (4) forms a flow channel (15) through two adjacent distribution grids (14), and a drug distribution pipe (16) is connected to the bottom of each flow channel (15).

2. The premixing and multi-point gravity distribution device for flotation reagents according to claim 1, characterized in that: The discharge direction of the water distribution pipe (7) and the medicine distribution pipe (8) is directly opposite to the inner wall of the premixing funnel (6). The water distribution pipe (7) and the medicine distribution pipe (8) are respectively connected to the external water supply and medicine supply pipes. The water distribution pipe (7) and the medicine distribution pipe (8) simultaneously deliver water and raw medicine to the premixing funnel (6). The premixing funnel (6) has an inverted cone-shaped structure. The grid plate (3), the inner plate (4) and the diversion plate (5) together form a distribution plate structure.

3. The premixing and multi-point gravity distribution device for flotation reagents according to claim 1, characterized in that: The drive motor (12) drives the premixing funnel (6), the diverter plate (5) and the dispensing pipe (16) to rotate through the transmission shaft (11), the connecting sleeve (10) and the central shaft (9). The bottom of the flow channel (15) is connected to the dispensing pipe (16) at the corresponding position. The length of the dispensing pipe (16) is arranged according to the on-site pipeline, and the liquid is conveyed to the flotation cell by gravity.

4. The premixing and multi-point gravity distribution device for flotation reagents according to claim 1, characterized in that: The distribution grid (14) has a fitting groove (17) inside, and a partition plate (18) is embedded and connected to the inner side of the fitting groove (17). The top of the dispensing tube (16) is detachably connected to the inside of the connecting tube (19), and a shut-off valve (20) is installed on the top of the connecting tube (19).

5. A premixing and multi-point gravity distribution device for flotation reagents according to claim 4, characterized in that: The partition (18) is tightly fitted to the inner wall of the fitting groove (17), and the two distribution grids (14) separate the inner sides of the grid plate (3) and the inner plate (4) to form a fan-shaped distribution area. The shut-off valve (20) at the top of the connecting pipe (19) seals the bottom of the corresponding fan-shaped distribution area.

6. The premixing and multi-point gravity distribution device for flotation reagents according to claim 1, characterized in that: A transmission seat (21) is installed at the top center of the distribution platform (1). The bottom of the diverter plate (5) is connected to the transmission seat (21) through a transmission block (22). The top of the central shaft (9) is detachably connected to the coupling sleeve (10) through a transmission key (23). A pin (24) is provided on the side of the transmission key (23). Slide grooves (25) are provided on both sides of the top of the coupling sleeve (10). The bottom of the transmission shaft (11) slides along the slide grooves (25) through a connecting bolt (26).

7. A premixing and multi-point gravity distribution device for flotation reagents according to claim 6, characterized in that: The pin (24) locks the transmission key (23) at the top of the central shaft (9) and the bottom of the connecting sleeve (10). The transmission shaft (11) slides along the inside of the connecting sleeve (10), and the connecting bolt (26) slides along the groove (25). The connecting bolt (26) limits the connection of the transmission shaft (11) to the inside of the connecting sleeve (10).

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