Electric on-line automatic adjusting device for classifier guide vanes

Abstract

The utility model discloses electric on -line automatic regulating device of classifier guide vane, including bottom plate and guide vane, bottom plate is set up obliquely, and the lower extreme fixed connection base of bottom plate, and the upper extreme fixed connection two side plates of bottom plate, and the one end of bottom plate height fixed connection blade motor, and the output shaft fixed connection main shaft of blade motor, and the spiral blade fixed connection on main shaft, and main shaft rotation is connected on bottom plate, and the one end of bottom plate low is provided with guide vane, and the upper of guide vane forms overflow port, and the overflow height is adjusted through the adjustment of guide vane's inclination angle, and the fixed connection on -line granularity appearance on bottom plate, and on -line granularity appearance is used to detect the particle size of overflowed ore particle, and on -line granularity appearance and spiral blade are located respectively at both sides of guide vane. The utility model discloses through the adjustment of guide vane's inclination angle, makes the classification of classifier to material more accurate, and product granularity is more concentrated, and according to the data of on -line granularity appearance feedback simultaneously, thereby can adjust guide vane in time, and the change of granularity is controlled in time.

Description

Technical Field

[0001] This utility model relates to the field of classifiers, specifically to an electric online automatic adjustment device for classifier guide vanes. Background Technology

[0002] Classifiers are widely used in metal beneficiation processes to classify slurry by particle size. They are based on the principle that solid particles of different sizes and specific gravities have different settling velocities in liquids. Coarse ore particles settle at the bottom of the tank and are pushed upwards and discharged by a screw conveyor, while fine ore particles float in the water and are discharged through the overflow port with the slurry flow. This is a type of mechanical classification equipment.

[0003] In existing classifiers, an overflow port is formed above the guide vanes. The overflow height is changed by adjusting the tilt angle of the guide vanes, thereby controlling the classification particle size. A larger guide vane tilt angle and a lower overflow height allow coarser particles with higher settling velocities from deeper in the slurry to be discharged from the overflow port, resulting in a coarser overflow product. Conversely, a smaller guide vane tilt angle and a higher overflow height allow only finer particles with lower settling velocities from the upper layers of the slurry to be discharged from the overflow port, resulting in a finer overflow product. Adjusting the guide vane tilt angle often requires manual intervention. However, manual adjustment has low precision, leading to unstable classification results, large deviations in product particle size distribution, and impacting product quality. Furthermore, manual adjustment cannot adapt to changes in particle size in a timely manner and limits the integration of the classifier into automated production lines, hindering remote monitoring and operation, and failing to meet the demands of modern industrial automation and intelligent production. Utility Model Content

[0004] The purpose of this invention is to provide an electric online automatic adjustment device for the guide vanes of a classifier, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric online automatic adjustment device for classifier guide vanes, comprising a base plate and guide vanes. The base plate is inclined, with a base fixedly connected to the lower end of the base plate and two side plates fixedly connected to the upper end of the base plate. A blade motor is fixedly connected to the higher end of the base plate, and the output shaft of the blade motor is fixedly connected to a main shaft. A spiral blade is fixedly connected to the main shaft, which is rotatably connected to the base plate. A guide vane is provided at the lower end of the base plate, and an overflow port is formed above the guide vane. The overflow height is adjusted by adjusting the tilt angle of the guide vane. An online particle size analyzer is fixedly connected to the base plate. The online particle size analyzer is used to detect the particle size of the overflowing mineral particles. The online particle size analyzer and the spiral blade are located on opposite sides of the guide vane. Both sides of the guide vane are provided with movable slots. Each side plate is fixedly connected to a movable shaft at the position of the movable slot. The movable shaft is slidably connected in the movable slot. The lower end of the guide vane passes through the base plate and is hinged to one end of the push plate through a hinge shaft. The push plate is slidably connected to the lower surface of the base plate. The other end of the push plate is fixedly connected to the output end of the electric push rod. The electric push rod is fixedly connected to the lower surface of the base plate.

[0006] Preferably, one side of the guide vane is slidably connected to a flow divider assembly for adjusting the overflow velocity.

[0007] Preferably, the diverter assembly includes a diverter A and a diverter B. A connecting plate is fixedly installed on the side of the guide vane away from the blade motor. Diverter A is slidably connected to the connecting plate. Diverter A has a plurality of teeth. Diverter B is formed by a plurality of teeth and a U-shaped fixing frame. The teeth on diverter B and the teeth on diverter A are interlocked and interlocked. The U-shaped fixing frame on diverter B is slidably connected to the connecting plate.

[0008] Preferably, a shunt motor is fixedly connected inside the guide vane, the output shaft of the shunt motor is fixedly connected to a screw, a threaded sleeve is threaded onto the screw, one end of a connecting rod is fixedly connected to the threaded sleeve, and the other end of the connecting rod passes through the guide vane and is fixedly connected to the B shunt plate. A sliding groove is provided on the guide vane for moving the connecting rod, and the connecting rod is slidably connected in the sliding groove.

[0009] Preferably, each of the connecting plates is rotatably connected to a gear, the surface of the A diverter plate that contacts the connecting plate is provided with a groove, a rack is fixedly connected in the groove of the A diverter plate, the surface of the U-shaped fixing frame that contacts the connecting plate is also provided with a groove, another rack is fixedly connected in the groove of the U-shaped fixing frame, and the rack in the A diverter plate and the rack in the U-shaped fixing frame both mesh with the gear.

[0010] Preferably, a PLC cabinet is fixedly connected to the outside of the side plate, and the PLC controller inside the PLC cabinet is electrically connected to the blade motor, the shunt motor and the online particle size analyzer.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model achieves precise control of the guide vane angle through an electric adjustment system, making the classifier classify materials more accurately and the product particle size more concentrated. At the same time, based on the data feedback from the online particle size analyzer, the guide vane can be adjusted in a timely manner to control changes in particle size. Furthermore, through PLC control, it can be integrated into the factory's automated production line, improving production automation capabilities and reducing the labor burden on personnel. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from a downward viewing angle; Figure 3 This is a cross-sectional view of the present invention at the location of the movable slot; Figure 4 This is a cross-sectional view of the present invention at the gear position; Figure 5 This is a cross-sectional view of the present invention at the screw position; Figure 6 for Figure 5 A magnified view of a portion of point A in the middle; Figure 7 This is a schematic diagram of the structure of the A-type diverter plate of this utility model; Figure 8 This is a schematic diagram of the structure of the B-type flow divider of this utility model; Figure 9 This is a schematic diagram of the working state of the diverter assembly of this utility model.

[0013] In the diagram: 101, base plate; 102, base; 103, main shaft; 104, spiral blade; 105, blade motor; 106, side plate; 201, guide vane; 202, connecting plate; 203, movable shaft; 204, movable slot; 205, hinge shaft; 206, push plate; 207, electric push rod; 208, discharge port; 209, elastic sealing gasket; 301, A-diverter plate; 302, B-diverter plate; 303, U-shaped fixing frame; 304, rack; 305, gear; 306, screw; 307, screw sleeve; 308, connecting rod; 309, sliding groove; 310, diverter motor; 401, PLC cabinet; 402, online particle size analyzer. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-9To address the issues of low angle accuracy of manually adjusted guide vanes 201, large deviations in product particle size distribution, inability of manual adjustment to adapt to particle size changes in a timely manner, and limitations of manual adjustment in integrating the classifier into automated production lines, this invention provides a technical solution: an electric online automatic adjustment device for classifier guide vanes, comprising a base plate 101 and guide vanes 201, wherein the base plate 101 is inclined. This allows for the adjustment of the guide vanes 201 and the height of the diverter plate via a PLC controller, thereby changing the overflow height and overflow velocity. Based on data feedback from the online particle size analyzer 402, the guide vanes 201 can be adjusted in a timely manner to control particle size changes, resulting in more accurate material classification, more concentrated product particle size, and seamless integration into factory automated production lines. The base plate 101 is fixedly connected to the base 102 at its lower end, and two side plates 106 are fixedly connected to the upper end of the base plate 101. A blade motor 105 is fixedly connected to the higher end of the base plate 101, and the output shaft of the blade motor 105 is fixedly connected to the main shaft 103. A spiral blade 104 is fixedly connected to the main shaft 103, which is rotatably connected to the base plate 101. A guide vane 201 is provided at the lower end of the base plate 101, and an overflow port is formed above the guide vane 201. The overflow height is adjusted by adjusting the tilt angle of the guide vane 201. An online particle size analyzer 402 is fixedly connected to the base plate 101. The online particle size analyzer 402 is used to detect the particle size of the overflowing mineral particles. The online particle size analyzer 402 and the spiral blade 104 are located on both sides of the guide vane 201. A flow divider assembly for adjusting the overflow velocity is slidably connected to one side of the guide vane 201; a PLC cabinet 401 is fixedly connected to the outside of the side plate 106, and the PLC controller (not shown in the drawings) inside the PLC cabinet 401 is electrically connected to the blade motor 105, the flow divider motor 310, and the online particle size analyzer 402. In this application, the blade motor 105, the electric push rod 207, the flow divider motor 310, the online particle size analyzer 402, and the PLC controller are all existing models.

[0016] Please see Figure 3-4 Both sides of the guide vane 201 are provided with movable slots 204. Each side plate 106 is fixedly connected to a movable shaft 203 at the position of the movable slot 204. The movable shaft 203 is slidably connected in the movable slot 204. The lower end of the guide vane 201 passes through the base plate 101 and is hinged to one end of the push plate 206 through the hinge shaft 205. The push plate 206 is slidably connected to the lower surface of the base plate 101. The other end of the push plate 206 is fixedly connected to the output end of the electric push rod 207. The electric push rod 207 is fixedly connected to the lower surface of the base plate 101.

[0017] During use, water and minerals are continuously injected into the classifier. Larger mineral particles sink to the bottom plate 101, while smaller mineral particles float in the water. The blade motor 105 is started, which drives the main shaft 103 to rotate. The main shaft 103 drives the spiral blades 104 to rotate, and the spiral blades 104 move the larger mineral particles settled on the base 102 upward, so that the larger mineral particles can be discharged from the discharge port 208 below the bottom plate 101, thereby collecting the larger mineral particles.

[0018] Mineral particles floating in the water overflow from the guide vane 201 and the diverter plate assembly. When the online particle size analyzer 402 detects a change in particle size at the overflow port, it sends a detection signal to the PLC controller in the PLC cabinet 401. The PLC controller in the PLC cabinet 401 controls the electric push rod 207 to start. The electric push rod 207 pushes the push plate 206 to move. The push plate 206 drives the hinge shaft 205 to move. The hinge shaft 205 drives the guide vane 201 to move. The guide vane 201 causes the movable slot 204 to move adaptively within the movable shaft 203, thereby changing the tilt angle of the guide vane 201 relative to the horizontal plane, thus changing the overflow height and the particle size at the overflow position. The larger the tilt angle of the guide vane 201 relative to the horizontal plane, the lower the overflow height and the larger the particle size at the overflow position; the smaller the tilt angle of the guide vane 201 relative to the horizontal plane, the higher the overflow height and the smaller the particle size at the overflow position. An elastic sealing gasket 209, such as rubber, is fixedly connected at the contact point between the guide vane 201 and the base plate 101 to prevent slurry from flowing out of the base plate 101.

[0019] Adjusting the tilt angle of guide vane 201 affects the overflow velocity of the slurry at its location. Specifically, because the injection rates of water and ore within the classifier remain stable, the slurry level inside the classifier is at the same height as the overflow port. Therefore, when the overflow port height decreases, the slurry will drain out quickly, resulting in a faster overflow velocity, which in turn carries larger particles out of the overflow port. Conversely, when the overflow port height increases, the slurry needs to accumulate to a higher level before overflowing, resulting in a delayed overflow and a significantly slower overflow velocity. At this time, some fine particles that could have overflowed have more time to settle to the bottom because their settling velocity is greater than the reduced overflow velocity, and they cannot be discharged with the overflow slurry in time, thus affecting the quality of the overflow product. Therefore, by setting up a flow divider assembly to adjust the overflow speed, and in conjunction with the angle adjustment of the guide vane 201, the particle size distribution deviation at the overflow port is further controlled, ensuring product quality is up to standard. The flow divider assembly includes an A flow divider 301 and a B flow divider 302. A connecting plate 202 is fixedly installed on the side of the guide vane 201 away from the blade motor 105. In this embodiment, two connecting plates 202 are provided, and the two connecting plates 202 are fixedly connected to both ends of the guide vane 201. The A flow divider 301 is slidably connected to the connecting plate 202. The A flow divider 301 is provided with several teeth. The B flow divider 302 is formed by several teeth and a U-shaped fixing frame 303. The teeth on the B flow divider 302 and the teeth on the A flow divider 301 are interlocked and interlocked, so that the top surface and the side surface of the teeth of both can form a continuous plane (the state when the A flow divider 301 and the B flow divider 302 are interlocked is shown in the figure). Figure 3 , 4 In the middle), the U-shaped fixing bracket 303 on the B-type splitter plate 302 is slidably connected to the connecting plate 202; the splitter motor 310 is fixedly connected inside the guide vane 201 (shown in the middle). Figure 5 In the middle), the output shaft of the shunt motor 310 is fixedly connected to the screw 306, and the screw 306 is threadedly connected to the sleeve 307 (shown in the middle). Figure 6 In the middle section, the threaded sleeve 307 fixes one end of the connecting rod 308, and the other end of the connecting rod 308 passes through the guide vane 201 and is fixedly connected to the B diverter plate 302. The guide vane 201 is provided with a sliding groove 309 for moving the connecting rod 308, and the connecting rod 308 is slidably connected in the sliding groove 309. Each connecting plate 202 is rotatably connected with a gear 305. The surface of the A diverter plate 301 that contacts the connecting plate 202 is provided with a groove. A rack 304 is fixedly connected in the groove of the A diverter plate 301. The surface of the U-shaped fixing frame 303 that contacts the connecting plate 202 is also provided with a groove. Another rack 304 is fixedly connected in the groove of the U-shaped fixing frame 303. The rack 304 in the A diverter plate 301 and the rack 304 in the U-shaped fixing frame 303 are both meshed with the gear 305.

[0020] When it is necessary to increase the overflow speed at the overflow port, the PLC controller in PLC cabinet 401 controls the start of the shunt motor 310. The shunt motor 310 drives the screw 306 to rotate, the screw 306 drives the screw sleeve 307 to move, the screw sleeve 307 drives the connecting rod 308 to move, and the connecting rod 308 drives the B shunt plate 302 to rise. Figure 9 (When the B-diverter plate 302 is in a gradually rising state), the B-diverter plate 302 drives the rack 304 fixed on it to move, the rack 304 drives the gear 305 to rotate, the gear 305 drives the rack 304 fixed on the A-diverter plate 301 to move, the rack 304 drives the A-diverter plate 301 to descend, and the teeth on the B-diverter plate 302 rise with the B-diverter plate 302. The upper surface of the teeth on the B-diverter plate 302 is no longer flush with the upper surface of the teeth on the A-diverter plate 301. A gap is formed between the upper surface of the A-diverter plate 301 and the adjacent teeth of the B-diverter plate 302 to allow the slurry to pass through. After the slurry passes over the guide vane 201, it overflows through this gap, and the teeth on the B-diverter plate 302 block the slurry. As the B-diverter plate 302 rises, its teeth create local constraints on the slurry flow channel, increasing the local resistance to slurry flow. The slurry mainly overflows from the channel above the A-diverter plate 301, where the resistance is smaller. The slurry flow lines are concentrated and the flow velocity is increased at this point, thus improving the overflow speed of the slurry.

[0021] When it is necessary to reduce the overflow velocity at the overflow port, the B diverter plate 302 is lowered so that its top is flush with the top of the A diverter plate 301. At this time, the slurry can overflow from the upper surfaces of the teeth of the A diverter plate 301 and the B diverter plate 302. Because the upper surfaces of the teeth of the A diverter plate 301 and the B diverter plate 302 re-form a flat overflow plane, the overflow area of ​​the slurry increases, the flow resistance decreases, and the slurry tends to overflow evenly from the entire overflow plane, reducing the flow velocity per unit area and slowing down the overflow velocity. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric online automatic adjustment device for guide vanes of a classifier, comprising a base plate (101) and guide vanes (201), characterized in that: The base plate (101) is inclined. The lower end of the base plate (101) is fixedly connected to the base (102). The upper end of the base plate (101) is fixedly connected to two side plates (106). The higher end of the base plate (101) is fixedly connected to the blade motor (105). The output shaft of the blade motor (105) is fixedly connected to the main shaft (103). The main shaft (103) is fixedly connected to the spiral blade (104). The main shaft (103) is rotatably connected to the base plate (101). The lower end of the base plate (101) is provided with a guide vane (201). An overflow port is formed above the guide vane (201). The overflow height is adjusted by adjusting the tilt angle of the guide vane (201). An online particle size analyzer (402) is fixedly connected to the base plate (101). The online particle size analyzer (402) is used to detect the particle size of the overflowing mineral particles. The online particle size analyzer (402) and the spiral blade (104) are located on both sides of the guide vane (201). Both sides of the guide vane (201) are provided with movable slots (204). Each side plate (106) is fixedly connected to a movable shaft (203) at the position of the movable slot (204). The movable shaft (203) is slidably connected in the movable slot (204). The lower end of the guide vane (201) passes through the base plate (101) and is hinged to one end of the push plate (206) through the hinge shaft (205). The push plate (206) is slidably connected to the lower surface of the base plate (101). The other end of the push plate (206) is fixedly connected to the output end of the electric push rod (207). The electric push rod (207) is fixedly connected to the lower surface of the base plate (101).

2. The classifier guide vane electric online automatic adjustment device according to claim 1, characterized in that: The guide vane (201) is slidably connected to a flow divider assembly for adjusting the overflow velocity on one side.

3. The classifier guide vane electric online automatic adjustment device according to claim 2, characterized in that: The diverter assembly includes an A diverter (301) and a B diverter (302). A connecting plate (202) is fixedly installed on the side of the guide vane (201) away from the blade motor (105). The A diverter (301) is slidably connected to the connecting plate (202). The A diverter (301) has a number of teeth. The B diverter (302) is formed by a number of teeth and a U-shaped fixing frame (303). The teeth on the B diverter (302) and the teeth on the A diverter (301) are interlocked and interlocked. The U-shaped fixing frame (303) on the B diverter (302) is slidably connected to the connecting plate (202).

4. The classifier guide vane electric online automatic adjustment device according to claim 3, characterized in that: The guide vane (201) is fixedly connected to a shunt motor (310), the output shaft of the shunt motor (310) is fixedly connected to a screw (306), a threaded sleeve (307) is threaded onto the screw (306), one end of a connecting rod (308) is fixedly connected to the threaded sleeve (307), the other end of the connecting rod (308) passes through the guide vane (201) and is fixedly connected to the B shunt plate (302), and a sliding groove (309) is provided on the guide vane (201) for moving the connecting rod (308), and the connecting rod (308) is slidably connected in the sliding groove (309).

5. The classifier guide vane electric online automatic adjustment device according to claim 4, characterized in that: Each of the connecting plates (202) is rotatably connected to a gear (305). The surface of the A diverter plate (301) in contact with the connecting plate (202) is provided with a groove. A rack (304) is fixedly connected in the groove of the A diverter plate (301). The surface of the U-shaped fixing frame (303) in contact with the connecting plate (202) is also provided with a groove. Another rack (304) is fixedly connected in the groove of the U-shaped fixing frame (303). The rack (304) in the A diverter plate (301) and the rack (304) in the U-shaped fixing frame (303) are both meshed with the gear (305).

6. The classifier guide vane electric online automatic adjustment device according to claim 5, characterized in that: The side plate (106) is fixedly connected to the PLC cabinet (401), and the PLC controller inside the PLC cabinet (401) is electrically connected to the blade motor (105), the shunt motor (310) and the online particle size analyzer (402).

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