Large-dip-angle belt conveying system for phosphate ore

Abstract

The utility model discloses a large-dip-angle belt conveying system for phosphate ore, which relates to the technical field of mining equipment and comprises a screening device, a linkage belt (8), a conveying belt (6), a conveying belt (7), a conveying belt (8), a conveying belt (8), a conveying belt (8), a conveying belt (8) and a conveying belt (8). The screening device is positioned at a crushing opening of a crushing device and is used for screening the phosphate ore with the particle size of less than 10cm to the conveying belt (6); the linkage belt (8) comprises an inclined belt (83), the included angle between the inclined belt (83) and the horizontal plane ranges from 26 degrees to 30 degrees, and the proportion of phosphate ore with the particle size smaller than 2 cm in the phosphate ore screened out by the screening device is smaller than 20%. The large-dip-angle belt conveying system for the phosphate ore is large in conveying dip angle, and the phosphate ore can be stably conveyed underground in a large-dip-angle belt state by controlling the particle size of the phosphate ore.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to a large-angle belt conveying system for phosphate ore. Background Art

[0002] Phosphate rock transportation is a crucial step in the production and processing of phosphate rock. It involves transporting the mined ore from the mine to a processing plant or other disposal location. Phosphate rock transportation technology needs to consider the phosphate rock's physical and chemical characteristics, such as morphology, particle size, and chemical composition, which can vary across regions and deposits.

[0003] In the existing technology, the inclination angle of the belt for transporting phosphate ore is often only 15-25°, which is not large enough. The small inclination angle means that the belt distance needs to be lengthened, the overall belt occupies a large area, the number of safety pillars is large, and the cost increases; there are no appropriate regulations on the particle size of phosphate ore transportation, and the particle size of phosphate ore varies, which increases the difficulty of phosphate ore transportation.

[0004] The high-angle belt conveyor system plays a vital role in mines. It can improve the efficiency of ore transportation and simultaneously reduce the belt cost and tunnel excavation cost. Therefore, it is very necessary to study the high-angle belt conveyor system for mines. Utility Model Content

[0005] The purpose of the utility model is to provide a large-angle belt conveying system for phosphate ore, which has a large conveying angle and can stably convey the phosphate ore underground in a large-angle belt state by controlling the particle size of the phosphate ore.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A high-angle belt conveyor system for phosphate ore includes a screening device located at the crushing port of a crushing device for screening phosphate ore with a particle size of less than 10 cm onto a conveyor belt, and a linked belt connecting an infeed section to the discharge end of the conveyor belt. The linked belt includes an inclined belt, and the angle between the inclined belt and the horizontal plane is 26°-30°. The proportion of phosphate ore screened by the screening device with a particle size of less than 2 cm is less than 20%.

[0008] Optionally, the linkage belt also includes a horizontal belt, the transport belt is connected to the linkage belt through a vibrating feeding device, the feed section of the horizontal belt is located below the discharge port of the vibrating feeding device to receive the material from the vibrating feeding device, and the feed section of the inclined belt is located below the discharge section of the horizontal belt to receive the material from the horizontal belt.

[0009] Optionally, the horizontal belt and the inclined belt are connected through at least two linkage rollers, wherein the top linkage roller is connected to the horizontal belt, and the bottom linkage roller is connected to the inclined belt, and the remaining linkage rollers are intermediate rollers distributed between the top linkage roller and the bottom linkage roller from top to bottom, and the linkage belt passes around each linkage roller in sequence from top to bottom.

[0010] Optionally, the diameters of the linkage rollers are equal, and the horizontal belt and the inclined belt have overlapping parts in the horizontal direction.

[0011] Optionally, a speed control device for controlling the conveying speed of the linkage belt is further included, and the speed control device includes:

[0012] Detection mechanisms are provided at intervals in the conveying direction of the inclined belt to detect whether phosphate rock has fallen on the inclined belt.

[0013] A speed control mechanism is connected to the detection mechanism and is used to control the linkage belt to slow down when the detection mechanism detects that phosphate rock has fallen downward from the inclined belt.

[0014] Optionally, the speed control mechanism includes:

[0015] a detection unit for detecting whether the phosphate rock sliding down from the inclined belt has slid to a set position;

[0016] A speed control unit connected to the detection unit is used to control the linkage belt to stop conveying when the detection unit detects that the phosphate rock has fallen to a set distance from the bottom linkage roller.

[0017] Optionally, the cross-section of the linkage belt is an arc belt that is low in the middle and high at both ends. The linkage belt is provided with a plurality of baffles along the conveying direction, and the baffles are perpendicular to the conveying direction of the linkage belt.

[0018] Optionally, an angle control device for adjusting the angle between the inclined belt and the horizontal plane is further included, and the angle control device includes:

[0019] A total amount statistics agency, used to count the total amount of phosphate rock falling into the inclined belt within a unit time;

[0020] A sliding amount statistics unit is used to count the sliding amount of phosphate rock sliding off the inclined belt in unit time;

[0021] A proportion calculation mechanism, connected to the total amount statistics mechanism and the slippage amount statistics mechanism, for calculating the ratio of the slippage amount to the total falling amount;

[0022] The angle adjustment mechanism is connected to the proportion calculation mechanism and is used to control the angle between the inclined belt and the horizontal plane to decrease when the ratio of the sliding amount to the total falling amount is higher than a set threshold.

[0023] Optionally, the angle adjustment mechanism includes a position adjustment unit capable of driving the bottom layer linkage roller to move vertically.

[0024] Optionally, the screening device includes a first screening grid and a second screening grid, the first screening grid is located below the crusher, and the second screening grid is located below the first screening grid, the aperture of the first screening grid is 10 cm, and the aperture of the second screening grid is 2 cm, the upper discharge port of the second screening grid is connected to the conveying belt, and the lower discharge port is connected to the small particle size collection box.

[0025] The beneficial effect of the present invention is that the screening device can automatically distinguish phosphate rocks with a particle size range of less than 10 cm, send the phosphate rocks with a particle size of less than 10 cm into the conveyor belt, and send the phosphate rocks with a particle size of less than 2 cm into the collection box, ensuring that the proportion of the phosphate rocks with a particle size of less than 2 cm that enter the conveyor belt is less than 20%, meeting the conveying standards of large-angle conveyor belts, and helping to improve the product quality of phosphate rocks.

[0026] A conveyor belt is installed at the discharge port of the screening device, and phosphate ore with a particle size of less than 10 cm is transported by the conveyor belt. The vibrating feeder is connected to the discharge end of the conveyor belt, and the discharge end of the vibrating feeder is connected to the infeed section of the linkage belt. The phosphate ore passes from the conveyor belt to the linkage belt through the vibrating feeder, ensuring continuous transportation of the phosphate ore.

[0027] Since there are smaller gaps between phosphate rocks with a particle size of less than 2 cm, there is greater friction between the phosphate rocks, making them less likely to slip when conveyed on an inclined belt at an angle of 26°-30°. However, in order to meet the particle size requirements, some of the phosphate rocks with too small a particle size need to be removed to meet the requirement that the proportion of phosphate rocks with a particle size of less than 2 cm is less than 20%. For materials such as phosphate rocks, ores of different particle sizes have different maximum allowable inclination angles.

[0028] Under the condition that the phosphate rock with a particle size of less than 10 cm and a particle size of less than 2 cm accounting for less than 20% can be stably transported on the belt without slipping, this application carefully designs the inclination angle of the linkage belt, and designs the angle between the inclined belt and the horizontal plane to be any value between 26°-30°, including the endpoint value, such as 28°. Increasing the inclination angle can shorten the belt length, thereby reducing the footprint and the number of safety pillars, and reducing costs.

[0029] For phosphate rock with a particle size of less than 10cm, conveying it on an inclined belt at an angle of 26°-30° not only meets the particle size requirements, but also reduces the risk of it slipping on the belt at a large angle due to its heavy weight, ensuring that most of the material can be better retained on the belt and reducing the sliding problem caused by excessively large particle size.

[0030] The large-angle belt conveyor system for phosphate ore provided by the utility model has an inclined belt with an inclination angle design of 26°-30°. For materials with a particle size of less than 10 cm and a particle size of less than 2 cm accounting for less than 20%, it can shorten the belt length by increasing the inclination angle while ensuring effective transportation, thereby reducing the floor space and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic structural diagram of a high-angle belt conveyor system for phosphate rock provided in a specific embodiment of the present utility model;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate linkage belt.

[0034] Reference numerals:

[0035] Fixed hydraulic crusher 1, jaw crusher 2, large screening grid 3, chute 4, small screening grid 5, transport belt 6, vibrating feeding device 7, linkage belt 8, horizontal belt 81, linkage roller 82, inclined belt 83. DETAILED DESCRIPTION

[0036] The core of the utility model is to provide a high-angle belt conveying system for phosphate ore. The high-angle belt conveying system for phosphate ore has a large conveying angle and can stably convey the phosphate ore underground under the high-angle belt state by controlling the particle size of the phosphate ore.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Please refer to Figures 1 to 2 , Figure 1 This is a schematic structural diagram of a high-angle belt conveyor system for phosphate rock provided in a specific embodiment of the present utility model; Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate linkage belt.

[0039] In a specific embodiment, the high-angle belt conveyor system for phosphate ore provided by the utility model includes a screening device located at the crushing port of the crushing device for screening phosphate ore with a particle size less than 10 cm to the conveyor belt 6, and a linkage belt 8 connected to the feed section and the discharge end of the conveyor belt 6. The linkage belt 8 includes an inclined belt 83, and the angle between the inclined belt 83 and the horizontal plane is 26°-30°. The proportion of phosphate ore with a particle size less than 2 cm screened by the screening device is less than 20%.

[0040] In the above structure, the high-angle belt conveyor system for phosphate ore includes a screening device, a conveyor belt 6, and an interlocking belt 8. The crushing device crushes large pieces of phosphate ore into smaller particles. The crushing device in this application crushes the phosphate ore to a particle size of less than 10 cm to facilitate subsequent processing and handling. The screening device is connected to the crushing port of the crushing device and further screens the crushed phosphate ore with a particle size of less than 10 cm to ensure that the particle size meets the requirements of subsequent processing.

[0041] The screening device can automatically distinguish phosphate rocks with a particle size range of less than 10 cm, send the phosphate rocks with a particle size less than 10 cm into the conveyor belt 6, and send the phosphate rocks with a particle size less than 2 cm into the collection box, ensuring that the proportion of the phosphate rocks with a particle size less than 2 cm that enter the conveyor belt 6 is less than 20%, meeting the conveying standards of the large-angle conveyor belt, which helps to improve the product quality of the phosphate rocks.

[0042] A conveyor belt 6 is located at the discharge port of the screening device. Phosphate ore with a particle size of less than 10 cm is transported via the conveyor belt 6. A vibrating feeder 7 is connected to the discharge end of the conveyor belt 6. The discharge end of the vibrating feeder 7 is connected to the feed section of a linkage belt 8. The phosphate ore passes from the conveyor belt 6 to the linkage belt 8 through the vibrating feeder 7, ensuring continuous transportation of the phosphate ore.

[0043] Since the gaps between phosphate rocks with a particle size of less than 2 cm are small, there is a large friction between the phosphate rocks, and they are not easy to slip when transported on the inclined belt 83 at an angle of 26°-30°. However, in order to meet the particle size requirements, some phosphate rocks with too small particle sizes need to be removed to meet the requirement that the proportion of phosphate rocks with a particle size of less than 2 cm is less than 20%. For materials such as phosphate rocks, different particle sizes have different maximum allowable inclination angles.

[0044] Under the condition that the phosphate rock with a particle size of less than 10 cm and a particle size of less than 2 cm accounting for less than 20% can be stably transported on the belt without slipping, the present application carefully designs the inclination angle of the linkage belt 8, and designs the angle between the inclined belt 83 and the horizontal plane to be any value between 26°-30°, including the endpoint value, such as 28°. Increasing the inclination angle can shorten the belt length, thereby reducing the footprint and the number of safety pillars, and reducing costs.

[0045] For phosphate rock with a particle size less than 10 cm, it is transported on an inclined belt 83 with an inclination angle of 26°-30°, which not only meets the particle size requirements, but also reduces the possibility of it sliding on the large-angle belt due to its heavy weight, ensuring that most of the material can be better retained on the belt and reducing the sliding problem caused by excessive particle size.

[0046] The large-angle belt conveyor system for phosphate ore provided by the utility model has an inclined belt with an inclination design of 8326°-30°. For materials with a particle size of less than 10 cm and a particle size of less than 2 cm accounting for less than 20%, it can shorten the belt length by increasing the inclination angle while ensuring effective transportation, thereby reducing the floor space and cost.

[0047] Based on the above-mentioned specific embodiments, the linkage belt 8 also includes a horizontal belt 81. The transport belt 6 is connected to the linkage belt 8 through a vibrating feeding device 7. The feed section of the horizontal belt 81 is located below the discharge port of the vibrating feeding device 7 to receive the material from the vibrating feeding device 7. The feed section of the inclined belt 83 is located below the discharge section of the horizontal belt 81 to receive the material from the horizontal belt 81.

[0048] In a specific embodiment, the linkage belt 8 includes a horizontal belt 81 and an inclined belt 83 to achieve efficient conveying of the phosphate ore. The main function of the vibrating feeder 7 is to evenly convey the phosphate ore from the conveyor belt 6 to the feed section of the linkage belt 8. The vibrating feeder 7 can precisely control the flow rate and speed of the material through vibration, ensuring a continuous supply and uniform distribution of the material. Because the vibrating feeder 7 operates in an inclined direction, the material has a greater speed and kinetic energy when it falls from the vibrating feeder 7 to the linkage belt 8, thereby achieving a smooth transition of the material and reducing accumulation and blockage of the material during the conveying process.

[0049] To reduce the speed and kinetic energy of the material falling directly from the vibrating feeder 7 onto the inclined belt 83, the material is first allowed to fall onto the horizontal belt 81. The horizontal belt 81 acts as a buffer zone, providing a smooth transition zone for the material, slowing down the material, reducing impact and wear on the belt, and contributing to uniform distribution and smooth conveying of the material, reducing uneven distribution of the material during the conveying process, and improving conveying efficiency and safety.

[0050] The inlet section of inclined belt 83 is located below the outlet section of horizontal belt 81, seamlessly receiving material from horizontal belt 81, ensuring continuous material transport and minimizing material spillage and loss. Inclined belt 83 is positioned at an angle of 26°-30° with the horizontal plane. This angle facilitates the efficient transport of phosphate rock, preventing it from sliding due to gravity while also utilizing gravity-assisted conveying to improve efficiency. By using inclined belt 83, phosphate rock can be transported to higher locations over a shorter distance, reducing the overall belt length and footprint, which is particularly beneficial in locations with limited space. It also reduces material and installation costs.

[0051] Through the above structural design, the combination of the inclined belt 83 and the horizontal belt 81 is rationally utilized, the vibrating feeding device 7 ensures the continuous supply of materials, the horizontal belt 81 provides a smooth transition, and the inclined belt 83 is responsible for transporting the materials to a higher position, thereby achieving efficient and economical material transportation.

[0052] Based on the above-mentioned specific embodiments, the horizontal belt 81 and the inclined belt 83 are connected through at least two linkage rollers 82, wherein the top linkage roller 82 is connected to the horizontal belt 81, and the bottom linkage roller 82 is connected to the inclined belt 83. The remaining linkage rollers 82 are intermediate rollers distributed between the top linkage roller 82 and the bottom linkage roller 82 from top to bottom, and the linkage belt 8 passes around each linkage roller 82 in sequence from top to bottom.

[0053] In a specific embodiment, the linkage belt 8 uses linkage rollers 82 to achieve a smooth transition and continuous conveying between the horizontal belt 81 and the inclined belt 83. The top linkage roller 82 is connected to the horizontal belt 81, and the bottom linkage roller 82 is connected to the inclined belt 83. The structure is stable, ensuring the stable operation of the belt conveyor system. The intermediate rollers are distributed in sequence from top to bottom, providing more adjustment space. The tension and angle of the belt can be adjusted according to actual needs to adapt to different conveying requirements. The linkage belt 8 passes around each linkage roller 82 in sequence from top to bottom, achieving continuous conveying from horizontal to inclined, ensuring the continuity and uniformity of material transportation.

[0054] In summary, the design of the linkage roller 82 can quickly adjust the path and position of the belt as needed, making the installation and adjustment of the belt more convenient; it also helps to reduce the tension change of the belt, reduce friction and energy loss, thereby reducing belt wear and maintenance, and reducing energy consumption.

[0055] Based on the above-mentioned specific embodiments, the belt between the horizontal belt 81 and the inclined belt 83 is a transition oblique belt, and the angle between the transition oblique belt and the horizontal plane is smaller than the angle between the inclined belt 83 and the horizontal plane. For example, the angle between the transition oblique belt and the horizontal plane is between 5° and 10°.

[0056] In practice, the angle between the transition diagonal belt and the horizontal plane is anywhere between 5° and 10°, inclusive. This angle is smaller than the 26°-30° angle between the inclined belt 83 and the horizontal plane. The transition diagonal belt connects the horizontal belt 81 and the inclined belt 83. This transition diagonal belt allows for turning at various angles, adapting to varying terrain and spatial layouts. This provides a more flexible layout for the linkage belt 8, enabling efficient material transport within a limited space, saving space, and enhancing adaptability.

[0057] Based on the above-mentioned specific embodiments, there is a gap between the inclined belt 83 and the top-level linkage roller 82. For example, the gap between the inclined belt 83 and the top-level linkage roller 82 is less than 30 cm. When the inclined belt 83 is tilted upward, it does not directly contact the top-level linkage roller 82, thereby reducing the friction and wear between the belt and the roller and extending the service life of the belt and the roller.

[0058] On the basis of the above-mentioned specific embodiments, the diameters of the linkage rollers 82 are equal, and the horizontal belt 81 and the inclined belt 83 have overlapping portions in the horizontal direction.

[0059] In actual application, the top linkage roller 82, the middle roller and the bottom linkage roller 82 have the same size, and the tension of the belt at the transition point changes little, preventing additional stress on the belt due to different roller diameters. The belt maintains correct alignment and tension when transitioning from the horizontal to the inclined section, and the belt runs synchronously between different sections, maintaining the consistency and balance of the belt during the transition process.

[0060] The horizontal belt 81 and the inclined belt 83 have overlapping parts in the horizontal direction. Without interrupting the flow of materials, the materials can effectively transition from the horizontal belt 81 to the inclined belt 83, ensuring that there is no material leakage during the transition, reducing the scattering and accumulation of materials at the transition point, and ensuring continuous and uniform transportation of materials.

[0061] On the basis of the above-mentioned specific embodiments, a speed control device for controlling the conveying speed of the linkage belt 8 is further included. The speed control device includes:

[0062] Detection mechanisms are provided at intervals in the conveying direction of the inclined belt 83 to detect whether there is phosphate rock sliding on the inclined belt 83.

[0063] A speed control mechanism connected to the detection mechanism is used to control the linkage belt 8 to slow down when the detection mechanism detects that phosphate rock has fallen from the inclined belt 83.

[0064] In practical applications, increasing the inclination angle can shorten the belt length, thereby reducing floor space, the number of safety pillars, and costs. However, increasing the inclination angle also requires consideration of the risk of material slippage and rollover. As belt speed increases, the limiting inclination angle also increases, but the increase is limited. This means that the inclination angle and belt speed must be balanced during design to ensure stable material conveying.

[0065] The present application has a speed control device for controlling the conveying speed of the interlocking belt 8, including a detection mechanism and a speed control mechanism. The detection mechanism is arranged at intervals in the conveying direction of the inclined belt 83 to detect whether there is phosphate rock sliding down the inclined belt 83. This detection can be achieved by a variety of sensors, such as photoelectric sensors, electromagnetic sensors or mechanical sensors, which can sense the presence of phosphate rock and send a signal to the speed control mechanism. The detection mechanism and the speed control mechanism form a closed-loop control system that works together to maintain the required speed. Specifically, when the speed control mechanism receives a signal that phosphate rock has slipped down from the inclined belt 83, it controls the interlocking belt 8 to slow down.

[0066] Based on the above embodiment, the speed of the linkage belt 8 is controlled by detecting the slippage of the phosphate rock. For materials with a particle size of less than 10 cm and a particle size of less than 2 cm accounting for less than 20%, while shortening the belt length by increasing the inclination angle, the speed of the linkage belt 8 is controlled to ensure effective transportation, thereby improving the efficiency and safety of the belt conveyor system.

[0067] Based on the above specific embodiments, the speed control mechanism includes:

[0068] A detection unit for detecting whether the phosphate rock sliding down from the inclined belt 83 has slid to a set position;

[0069] A speed control unit connected to the detection unit is used to control the linkage belt 8 to stop conveying when the detection unit detects that the phosphate rock has fallen to a set distance from the bottom linkage roller 82.

[0070] In practical applications, a speed control mechanism precisely controls the speed of the phosphate rock during conveying. A detection unit detects whether the phosphate rock has fallen to a set position and sends a signal to the speed control unit. The speed control unit receives the signal from the detection unit and, when the phosphate rock has fallen to a set distance from the bottom linkage roller 82, stops the linkage belt 8. Specifically, the linkage belt 8 is connected to a motor, and the motor controller, part of the speed control unit, receives commands from the control system and adjusts the motor's speed to stop the linkage belt 8. This typically involves adjusting the motor's input voltage or current to control its speed.

[0071] Based on the above embodiment, the speed control mechanism can achieve precise control of the phosphate rock during the belt conveying process, ensuring that the phosphate rock can be stopped in time when it reaches the set position, preventing the phosphate rock from getting stuck between the bottom linkage roller 82 and the belt, causing the linkage belt 8 to get stuck and the phosphate rock to accumulate on the belt, thereby improving the conveying efficiency and safety.

[0072] Based on the above-mentioned specific embodiments, the cross-section of the linkage belt 8 is an arc belt with a low middle and high ends. When transporting materials such as phosphate rock, especially when the inclination angle is large, the accumulation of materials on both sides of the belt can be reduced. At the same time, the low middle design helps the flow of materials and reduces the risk of jamming.

[0073] Based on the above-mentioned specific embodiments, the linkage belt 8 is provided with a plurality of bars along the conveying direction. The bars are perpendicular to the conveying direction of the linkage belt 8. The bars can prevent the material from sliding or rolling on the belt, especially when the belt is tilted at a large angle. The bars can provide additional support and blocking effects to ensure safe and stable transportation of the material.

[0074] On the basis of the above-mentioned specific embodiments, an angle control device for adjusting the angle between the inclined belt 83 and the horizontal plane is further included. The angle control device includes:

[0075] A total amount statistics unit is used to count the total amount of phosphate rock falling into the inclined belt 83 per unit time;

[0076] A sliding amount statistics unit is used to count the sliding amount of phosphate rock sliding off the inclined belt 83 per unit time;

[0077] The proportion calculation mechanism is connected with the total amount statistical mechanism and the slippage statistical mechanism to calculate the ratio of the slippage amount to the total falling amount;

[0078] The angle adjustment mechanism is connected to the proportion calculation mechanism and is used to control the angle between the inclined belt 83 and the horizontal plane to decrease when the ratio of the sliding amount to the total falling amount is higher than a set threshold.

[0079] In practice, the angle control device includes a total amount counting mechanism, a slippage counting mechanism, a ratio calculation mechanism, and an angle adjustment mechanism. The total amount counting mechanism is capable of calculating the total amount of phosphate rock falling onto the inclined belt 83 per unit time. This can be achieved by installing weighing sensors on the belt conveyor. These sensors monitor the weight of the material in real time, thereby calculating the total amount of material. This allows monitoring and adjustment of the entire conveying system to ensure a stable material supply and efficient conveying.

[0080] The sliding amount statistics agency counts the sliding amount of phosphate rock sliding off the inclined belt 83 per unit time. This can be achieved by installing a sensor or a visual detection system under the inclined belt 83. The sliding material can be detected and the sliding amount can be calculated. Monitoring the sliding amount can timely discover and solve problems in the transportation process.

[0081] The ratio calculation mechanism is connected to the total amount counting mechanism and the slippage counting mechanism to calculate the ratio of the slippage amount to the total amount of material falling in. This ratio is calculated based on the data from the total amount counting mechanism and the slippage counting mechanism. This ratio is an important basis for adjusting the inclination angle of the inclined belt 83 to ensure the stability of the material on the belt.

[0082] The angle adjustment mechanism is connected to the ratio calculation mechanism. When the ratio of the slippage amount to the total falling amount exceeds a set threshold, the angle between the inclined belt 83 and the horizontal plane is controlled to decrease. Specifically, this can be achieved by a servo motor or hydraulic system, which can adjust the inclination angle of the belt to reduce material slippage.

[0083] Based on the above embodiments, the design of the angle control device takes into account the key parameters in the material conveying process. By automatically monitoring and adjusting the belt inclination, the phosphate rock conveying process can be effectively controlled, material loss can be reduced, and conveying efficiency can be improved.

[0084] On the basis of the above-mentioned specific embodiments, the angle adjustment mechanism includes a position adjustment unit capable of driving the bottom linkage roller 82 to move vertically.

[0085] In practical applications, controlling the angle between the inclined belt 83 and the horizontal plane to decrease can be achieved by adjusting the position of the bottom linkage roller 82 , thereby changing the angle of the inclined belt 83 .

[0086] Specifically, the position adjustment unit can drive the bottom linkage roller 82 to move vertically to adjust the angle between the inclined belt 83 and the horizontal plane. The position adjustment unit can be achieved by an electric telescopic rod. The electric telescopic rod is located directly below the bottom linkage roller 82. Its fixed portion is connected to the frame. The telescopic rod is connected to the bottom linkage roller 82. The bottom linkage roller 82 is fixed by the electric telescopic rod. The telescopic rod of the electric telescopic rod is extended and retracted to drive the bottom linkage roller 82 to move up and down, thereby achieving vertical movement of the bottom linkage roller 82.

[0087] Based on the above embodiment, the angle control device realizes the vertical movement of the bottom linkage roller 82 through the position adjustment unit, and then adjusts the angle between the inclined belt 83 and the horizontal plane to respond to the proportional relationship between the slip amount and the total falling amount, thereby ensuring the stable transportation of phosphate rock and reducing slippage, thereby enhancing the adaptability and safety of the system; it has the characteristics of reasonable and simple structure, low production cost and easy installation.

[0088] Based on the above-mentioned specific embodiments, the screening device includes a first screening grid and a second screening grid. The first screening grid is located below the crusher, and the second screening grid is located below the first screening grid. The aperture of the first screening grid is 10 cm, and the aperture of the second screening grid is 2 cm. The upper discharge port of the second screening grid is connected to the conveyor belt 6, and the lower discharge port is connected to the small particle size collection box.

[0089] In a specific embodiment, the screening device includes two main screening grids, a first screening grid and a second screening grid. The first screening grid can also include a large screening grid 3 and a small screening grid 5. The large screening grid 3 is located below the fixed hydraulic crusher 1, and the small screening grid 5 is located below the jaw crusher 2. The small screening grid 5 is located below the large screening grid 3. The large screening grid 3 and the small screening grid 5 are connected by a chute 4. The aperture of the small screening grid 5 is smaller than the aperture of the large screening grid 3. The aperture of the small screening grid 5 is 10 cm, and graded crushing and graded separation are performed to improve the efficiency and accuracy of material processing.

[0090] After crushing by the crusher, phosphate ore with a particle size of less than 10 cm falls on the first screening grid, and phosphate ore with a particle size of less than 2 cm falls on the second screening grid. The first screening grid allows larger materials to pass through, and the second screening grid is used to separate finer materials. This grading process helps to improve the efficiency and accuracy of material processing.

[0091] The upper discharge port of the second screening grid is connected to the conveyor belt 6, so that the screened material can be directly transported to the linkage belt 8. The lower discharge port is connected to the small particle size collection box, which is used to collect fine materials that pass through the second screening grid and screen out phosphate rock that does not meet the particle size requirements, ensuring that the material with a particle size of less than 10 cm and a particle size of less than 2 cm accounts for less than 20%, and ensuring that the phosphate rock with a particle size of less than 10 cm and a particle size of less than 2 cm accounts for less than 20% is stably transported on the high-angle belt, improving the automation and efficiency of the entire process.

[0092] Based on the above embodiment, the screening device automatically distinguishes phosphate rocks of different particle sizes and adjusts the inclination angle of the belt, which can improve the screening efficiency and meet the requirements of the phosphate rock particle size, thereby ensuring the effective screening and transportation of the phosphate rock.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] The above is a detailed introduction to the high-angle belt conveyor system for phosphate rock provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-angle belt conveyor system for phosphate rock, characterized in that: The invention comprises a screening device located at a crushing port of a crushing device for screening phosphate ore with a particle size of less than 10 cm to a conveying belt (6), a linkage belt (8) connected between an inlet section and a discharge end of the conveying belt (6), the linkage belt (8) comprising an inclined belt (83), the angle between the inclined belt (83) and a horizontal plane being 26°-30°, and the proportion of the phosphate ore with a particle size of less than 2 cm screened by the screening device being less than 20%.

2. The high-angle belt conveyor system for phosphate rock according to claim 1, characterized in that: The linkage belt (8) further comprises a horizontal belt (81), the transport belt (6) and the linkage belt (8) are connected via a vibrating feeding device (7), the feeding section of the horizontal belt (81) is located below the discharge port of the vibrating feeding device (7) to receive the material from the vibrating feeding device (7), and the feeding section of the inclined belt (83) is located below the discharge section of the horizontal belt (81) to receive the material from the horizontal belt (81).

3. The high-angle belt conveyor system for phosphate rock according to claim 2, characterized in that: The horizontal belt (81) and the inclined belt (83) are connected via at least two linkage rollers (82), wherein the top linkage roller (82) is connected to the horizontal belt (81), and the bottom linkage roller (82) is connected to the inclined belt (83), and the remaining linkage rollers (82) are intermediate rollers distributed sequentially from top to bottom between the top linkage roller (82) and the bottom linkage roller (82), and the linkage belt (8) passes around each linkage roller (82) sequentially from top to bottom.

4. The high-angle belt conveyor system for phosphate rock according to claim 3, characterized in that: The diameters of the linkage rollers (82) are equal, and the horizontal belt (81) and the inclined belt (83) have overlapping portions in the horizontal direction.

5. The high-angle belt conveyor system for phosphate rock according to any one of claims 3-4, characterized in that: It also includes a speed control device for controlling the conveying speed of the linkage belt (8), and the speed control device includes: Detection mechanisms are provided at intervals in the conveying direction of the inclined belt (83) for detecting whether phosphate ore has fallen on the inclined belt (83). A speed control mechanism connected to the detection mechanism, for controlling the linkage belt (8) to decelerate when the detection mechanism detects that phosphate ore has fallen downward from the inclined belt (83).

6. The high-angle belt conveyor system for phosphate rock according to claim 5, characterized in that: The speed control mechanism comprises: a detection unit for detecting whether the phosphate rock sliding down from the inclined belt (83) has slid to a set position; A speed control unit connected to the detection unit is used to control the linkage belt (8) to stop conveying when the detection unit detects that phosphate rock has fallen to a set distance from the bottom linkage roller (82).

7. The high-angle belt conveyor system for phosphate rock according to claim 6, characterized in that: The cross section of the linkage belt (8) is an arc belt with a low center and high ends. The linkage belt (8) is provided with a plurality of baffles along the conveying direction, and the baffles are perpendicular to the conveying direction of the linkage belt (8).

8. The high-angle belt conveyor system for phosphate rock according to any one of claims 3-4, characterized in that: It also includes an angle control device for adjusting the angle between the inclined belt (83) and the horizontal plane, and the angle control device includes: A total amount statistics unit for counting the total amount of phosphate rock falling into the inclined belt (83) within a unit time; A sliding amount statistics unit is used to count the sliding amount of phosphate rock sliding off the inclined belt (83) per unit time; A proportion calculation mechanism, connected to the total amount statistics mechanism and the slippage amount statistics mechanism, for calculating the ratio of the slippage amount to the total falling amount; An angle adjustment mechanism is connected to the proportion calculation mechanism and is used to control the angle between the inclined belt (83) and the horizontal plane to decrease when the ratio of the sliding amount to the total falling amount is higher than a set threshold.

9. The high-angle belt conveyor system for phosphate rock according to claim 8, characterized in that: The angle adjustment mechanism comprises a position adjustment unit capable of driving the bottom linkage roller (82) to move vertically.

10. The high-angle belt conveyor system for phosphate rock according to any one of claims 1 to 4, characterized in that: The screening device comprises a first screening grid and a second screening grid, wherein the first screening grid is located below the crusher, and the second screening grid is located below the first screening grid, the aperture of the first screening grid is 10 cm, and the aperture of the second screening grid is 2 cm, the upper discharge port of the second screening grid is connected to the transport belt (6), and the lower discharge port is connected to the small particle size collection box.

Images