Efficient chute based on desilication of magnesite

Abstract

This invention discloses a high-efficiency sluice for desilication of magnesite, belonging to the field of magnesite processing technology. It includes a limiting frame, with the sluice body mounted on the upper inner side of the limiting frame. A first cylinder is installed on the right side of the bottom of the inner wall of the limiting frame, and slide rails are fixed to the bottom of the inner wall of the limiting frame. It also includes a support plate, the bottom of which is connected to the upper surface of the slide rails via pulleys. This high-efficiency sluice for desilication of magnesite utilizes a motor-driven cam in conjunction with a return spring to cause the striking blocks to regularly strike the sluice, creating controllable vibrations. This optimizes the slurry flow, prevents mineral particle deposition, and enhances mineral stratification. A second cylinder drives the sluice to tilt intermittently, increasing the relative displacement of the magnesite particles and simultaneously adjusting the striking force to improve separation accuracy. The first cylinder also drives the sluice to slide laterally, evenly distributing the ore, and triggers a self-circulating lubrication system when the sluice body tilts, ensuring smooth equipment operation and ultimately achieving efficient desilication and purification of magnesite.

Description

Technical Field

[0001] This invention relates to the field of magnesite processing technology, specifically to a high-efficiency sluice based on magnesite desilication. Background Technology

[0002] Magnesite, a key non-metallic mineral for the preparation of refractory materials and chemical raw materials, has its quality primarily dependent on the SiO2 impurity content. The easily fusible silicates formed by siliceous impurities during calcination significantly reduce the strength of the finished product. Therefore, desilication and purification are crucial steps in magnesite processing. Currently, the mainstream desilication process for magnesite is flotation, supplemented by pretreatment steps such as gravity separation. The sluice box, as a key piece of equipment for slurry transport, classification, and separation, directly affects desilication efficiency and concentrate quality. In the flotation desilication process, the sluice box plays a vital role in pre-classifying the raw slurry, desliming, and initial mixing of reagents and slurry. In special processes such as acid-triggered gravity separation, the sluice box is the core carrier for separating magnesite from siliceous minerals based on their specific gravity; its performance directly determines the subsequent desilication accuracy and mineral recovery rate. However, existing sluice boxes for magnesite desilication have the following shortcomings in practical use:

[0003] Magnesite desilication slurry contains a large amount of fine mineral particles and some incompletely crushed particles. However, existing sluices lack vibration function, and these particles are easily settled to the bottom of the sluice by gravity. Furthermore, the sluice inclination angle is strongly coupled with the slurry flow rate. A small inclination angle will slow down the slurry flow rate, which will greatly increase the risk of particle deposition. Without vibration assistance, stubborn material can easily form and even cause sluice blockage. It is also inconvenient to dynamically adjust the sluice slope and cannot adaptively match the impact force, making it difficult to break the inertial movement trajectory of the ore. As a result, the relative displacement between siliceous impurities and magnesite particles is insufficient, which greatly limits the separation accuracy and efficiency. At the same time, the lack of a lateral material equalization sliding mechanism makes the ore prone to local overload or idling, resulting in low utilization of the sluice working face, uneven separation effect across the entire cross section, and significant fluctuations in the purification quality of the same batch of ore, which cannot meet the requirements of industrial precision separation.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency sluice based on magnesite desilication to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency chute based on magnesite desilication, comprising a limiting frame, a chute body installed on the upper inner side of the limiting frame, a first cylinder installed on the right side of the bottom of the inner wall of the limiting frame, and slide rails fixed to the bottom of the inner wall of the limiting frame.

[0007] It further includes a support plate. The bottom of the support plate is connected to the upper surface of the slide rail by rolling with pulleys. And the top of the inner wall of the support plate is connected through the movable plate. And one second cylinder is respectively installed on the left sides of two relatively arranged support plates by bolts. A bearing plate is fixedly connected between the four support plates. A lubrication component is arranged inside the support plate. Sliders are respectively slidably connected to the left sides of the lower surfaces of the chute body. A vibration component is arranged on the lower surface of the chute body.

[0008] Preferably, the outer side of the chute body is rotationally connected to the inner side of the limit frame by a rotating shaft.

[0009] Preferably, the four movable plates are equally angularly distributed on the lower surface of the chute body. And the top of the movable plate is hinged to the lower surface of the chute body. And the bottom of the movable plate is slidably arranged inside the support plate.

[0010] Preferably, the telescopic end of the first cylinder is fixedly connected to the right side of the bearing plate by bolts. And the bottoms of the two sliders are hinged to the telescopic ends of the two second cylinders.

[0011] Preferably, the vibration component includes a fixed frame. The fixed frame is fixedly installed on the lower surface of the chute body by bolts. And striker blocks are equally spaced and slidably connected through the inside of the fixed frame. A return spring is wound and fixed on the outer side of the striker block. And the other end of the return spring is fixed to the inner wall of the fixed frame. Telescopic plates are fixedly connected to the left and right sides of the lower surface of the chute body. The telescopic end of the left telescopic plate is equipped with a motor. And a rotating rod is fixed to the output end of the motor. Cam discs are equally spaced and sleeved and fixed on the outer side of the rotating rod. Drive gears are sleeved and fixed on the outer sides of the shaft ends of the chute body. A rack is slidably connected to the inner wall of the limit frame. And a connecting plate is hinged to the bottom of the rack.

[0012] Preferably, the rotating rod is connected by bearings to the inner sides of the telescopic ends of the two telescopic plates. And one end of the rotating rod penetrates through the inside of the connecting plate.

[0013] Preferably, the positions of the cam discs and the striker blocks correspond to each other. And the outer sides of the cam discs are in contact with the bottoms of the striker blocks. The rack is arranged in a "C" shape. And the rack is meshed with the two drive gears.

[0014] Preferably, the lubrication component includes an oil storage box. The oil storage box is installed on the upper surface of the bearing plate. An extrusion plate is fixed to the bottom of the movable plate. Rubber oil bags are arranged on the upper and lower sides inside the support plate. And the upper and lower rubber oil bags are connected to the oil storage box through oil inlet pipes. An oil outlet pipe is fixedly connected to the side of the support plate. And a nozzle is installed at the bottom of the oil outlet pipe. Check valves are installed inside the oil inlet pipe and the oil outlet pipe.

[0015] Preferably, the extrusion plate is distributed between the upper and lower rubber oil bladders, and the oil outlet pipe is connected to the interior of the upper and lower rubber oil bladders.

[0016] Preferably, the nozzle at the bottom of the oil outlet pipe is inclined, and the position of the nozzle corresponds to that of the pulley.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention uses a motor to drive multiple sets of cams to periodically squeeze and strike the impact blocks, which, in conjunction with a return spring, achieves regular knocking of the impact blocks on the bottom of the chute body, causing the chute to generate stable and controllable vibration. This vibration can optimize the flow state of the slurry in the chute, effectively avoid mineral particle deposition and blockage, and at the same time enhance the density stratification effect of silica particles and magnesite particles, laying the foundation for efficient separation.

[0019] In this invention, the second cylinder drives the chute body to tilt intermittently up and down around the rotating shaft, dynamically changing the chute slope to break the inertial motion path of the ore, increasing the relative displacement between siliceous impurities and magnesite particles, significantly improving separation efficiency and sorting accuracy. At the same time, the deflection of the rotating shaft drives the drive gear to mesh with the rack and pinion to rise and fall, so that the motor, rotating rod and cam rise and fall synchronously with the rack and pinion, realizing adaptive adjustment of the distance between the cam and the striking block, accurately matching the striking force under different tilt angles, and ensuring the adaptability and stability of vibration sorting.

[0020] In this invention, the first cylinder drives the chute body to slide laterally along the slide rail, so that the ore is evenly spread on the working surface, avoiding local overload or no load, improving the utilization rate of the contact surface and ensuring the consistency of the entire cross-section sorting. When the chute is tilted, the displacement of the movable plate drives the extrusion plate to alternately extrude the rubber oil bladder, realizing the real-time spraying of lubricating oil to the contact surface between the pulley and the slide rail. When the oil bladder is reset by its own elasticity, it automatically absorbs oil and fills up. With the help of the one-way valve to limit the unidirectional flow of oil, a self-circulating lubrication system without manual intervention is formed, which completely solves the problem of backflow and turbulence, and ensures the smoothness of the chute's lateral movement and the reliability of equipment operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the inclined structure of the chute body of the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the limiting frame of the present invention;

[0023] Figure 3 This is a schematic diagram of the meshing structure of the rack and drive gear of the present invention;

[0024] Figure 4 This is a schematic diagram of the main cross-sectional structure of the support plate of the present invention;

[0025] Figure 5This is a schematic diagram of the cam extrusion striking block structure of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the rotating rod, cam, and striking block of the present invention;

[0027] Figure 7 This is a schematic diagram of the downward structure of the rotating rod and cam in this invention;

[0028] Figure 8 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0029] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point B.

[0030] In the diagram: 1. Limiting frame; 2. Chute body; 3. First cylinder; 4. Slide rail; 5. Pulley; 6. Movable plate; 7. Support plate; 8. Bearing plate; 9. Second cylinder; 10. Slider; 1101. Telescopic plate; 1102. Fixed frame; 1103. Rotating rod; 1104. Connecting plate; 1105. Cam; 1106. Striking block; 1107. Drive gear; 1108. Rack; 1109. Return spring; 1201. Oil reservoir; 1202. Oil inlet pipe; 1203. Extrusion plate; 1204. Rubber oil bladder; 1205. Oil outlet pipe; 1206. Nozzle; 1207. One-way valve; 13. Motor; 14. Rotating shaft. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-9This invention provides a technical solution: a high-efficiency chute based on magnesite desilication, comprising a limiting frame 1, a chute body 2 installed on the upper inner side of the limiting frame 1, a first cylinder 3 installed on the right side of the bottom of the inner wall of the limiting frame 1, and slide rails 4 fixed to the bottom of the inner wall of the limiting frame 1; it also includes support plates 7, the bottom of the support plates 7 being rotatably connected to the upper surface of the slide rails 4 via pulleys 5, and movable plates 6 penetratingly connected to the top of the inner wall of the support plates 7, and two second cylinders 9 respectively bolted to the left sides of two oppositely arranged support plates 7, and four movable plates 6. The movable plate 6 is evenly distributed on the lower surface of the chute body 2, and the top of the movable plate 6 is hinged to the lower surface of the chute body 2. The bottom of the movable plate 6 is slidably disposed inside the support plate 7. The four support plates 7 are fixedly connected to the bearing plate 8. The left side of the lower surface of the chute body 2 is slidably connected to the slider 10. The telescopic end of the first cylinder 3 is fixedly connected to the right side of the bearing plate 8 by bolts. The bottom of the two sliders 10 is hinged to the telescopic ends of the two second cylinders 9. The outer side of the chute body 2 is rotatably connected to the inner side of the limit frame 1 through the rotating shaft 14.

[0033] In one embodiment of the present invention, when the magnesite slurry flows downward along the inclined chute body 2, a stable turbulent flow field is formed in the water flow within the chute, driving the mineral particles to move synchronously with the flow pattern. Due to the significant difference in density, the silica particles are more strongly coupled by the frictional force at the bottom of the chute and their own gravity, and will quickly settle to the bottom area of ​​the chute. Moreover, their migration rate as they slide down the chute body is significantly reduced, and they are prone to enrichment in specific areas at the bottom of the chute. Meanwhile, the relatively less dense magnesite particles maintain a faster forward speed under the thrust of the turbulent flow, and eventually pass through the end of the chute. The concentrate is discharged smoothly from the outlet, thereby achieving efficient separation and desiliconization purification of magnesite and siliceous impurities. During this process, the first cylinder 3 can be activated, which drives the bearing plate 8 to make reciprocating linear motion left and right. This, in turn, drives the chute body 2 to slide smoothly laterally along the slide rail 4 through the movable plate 6, support plate 7 and pulley 5, so that the ore is evenly spread on the working surface of the chute body 2, avoiding local overload or no load, greatly improving the utilization rate of the contact surface between the ore and the chute body 2, and ensuring the consistency of the sorting effect across the entire cross section.

[0034] A vibration component is provided on the lower surface of the chute body 2. The vibration component includes a fixing frame 1102, which is fixedly installed on the lower surface of the chute body 2 by bolts. And a plurality of striking blocks 1106 are slidably connected through the fixing frame 1102 at equal intervals. A return spring 1109 is wound and fixed on the outer side of the striking block 1106, and the other end of the return spring 1109 is fixed on the inner wall of the fixing frame 1102. Telescopic plates 1101 are fixedly connected to both the left and right sides of the lower surface of the chute body 2. The telescopic end of the left telescopic plate 1101 is equipped with a motor 13, and a rotating rod 1103 is fixed to the output end of the motor 13. A plurality of cams 1105 are sleeved and fixed on the outer side of the rotating rod 1103 at equal intervals. Driving gears 1107 are sleeved and fixed on the outer sides of the shaft ends of the chute body 2. A rack 1108 is slidably connected to the inner wall of the limiting frame 1. The positions of the cams 1105 correspond to those of the striking blocks 1106 one by one, and the outer side of the cam 1105 is in contact with the bottom of the striking block 1106. The rack 1108 is arranged in a "匚" shape, and the rack 1108 is meshed with both of the two driving gears 1107. And a connecting plate 1104 is hinged to the bottom of the rack 1108. The rotating rod 1103 is connected by bearings to the inner sides of the telescopic ends of the two telescopic plates 1101, and one end of the rotating rod 1103 penetrates through the inside of the connecting plate 1104.

[0035] In one embodiment of the present invention, the motor 13 drives the rotating rod 1103 to synchronously drive multiple sets of cams 1105 to rotate. The cams 1105 periodically squeeze and strike the bottom of the striking block 1106, driving the striking block 1106 to move upward and impact the bottom of the chute body 2. When the cam 1105 rotates away from the striking block 1106, the rebound force of the return spring 1109 can pull the striking block 1106 to quickly move downward and reset. Through this reciprocating motion, the striking block 1106 can continuously and regularly strike the bottom of the chute body 2, causing the chute body 2 to produce stable and controllable vibration, effectively improving the flow state of the slurry in the trough, avoiding mineral particle deposition and enhancing the mineral stratification effect. Then, the second cylinder 9 drives the slider 10 to perform reciprocating linear motion. Through the pushing and pulling action of the slider 10, the chute body 2 is driven to intermittently tilt up and down around the rotating shaft 14, thereby... By dynamically changing the slope of the chute, the inertial movement path of the ore is broken, allowing siliceous impurities and magnesite particles to have more sufficient relative displacement, which greatly improves the separation efficiency and sorting accuracy. At the same time, the angular deflection of the rotating shaft 14 can synchronously drive the coaxially fixed drive gear 1107 to rotate in both directions. The drive gear 1107 then meshes with the rack 1108 and drives it to move up and down in the vertical direction. The lifting and lowering action of the rack 1108 is transmitted to the rotating rod 1103 and multiple cams 1105 fixed on the rod through the connecting plate 1104. The motor 13 adjusts its position up and down synchronously with the rotating rod 1103, so that the distance between the cam 1105 and the striking block 1106 can be adaptively linked and adjusted according to the tilt angle of the chute body 2, ultimately achieving precise matching and dynamic control of the striking force of the striking block 1106.

[0036] The support plate 7 is equipped with a lubrication assembly, which includes an oil reservoir 1201. The oil reservoir 1201 is installed on the upper surface of the support plate 8. A compression plate 1203 is fixed to the bottom of the movable plate 6. Rubber oil bladders 1204 are provided on both the upper and lower sides of the support plate 7. The two rubber oil bladders 1204 are connected to the oil reservoir 1201 through an oil inlet pipe 1202. An oil outlet pipe 1205 is fixedly connected to the side of the support plate 7. A nozzle 1206 is installed at the bottom of the oil outlet pipe 1205. The compression plate 1203 is distributed between the two rubber oil bladders 1204. The oil outlet pipe 1205 is connected to the interior of the two rubber oil bladders 1204. A one-way valve 1207 is installed inside both the oil inlet pipe 1202 and the oil outlet pipe 1205. The nozzle 1206 at the bottom of the oil outlet pipe 1205 is inclined and corresponds to the position of the pulley 5.

[0037] In one embodiment of the present invention, during the intermittent up-and-down reciprocating tilting process of the chute body 2, the movable plate 6 simultaneously completes up-and-down reciprocating movement within the guide space of the support plate 7. Its displacement movement drives the extrusion plate 1203 to alternately extrude the two rubber oil bladders 1204 arranged vertically within the support plate 7. When the extrusion plate 1203 extrudes the rubber oil bladders 1204, the lubricating oil inside the rubber oil bladders 1204 is forced into the oil outlet pipe 1205 under pressure, and then precisely sprayed onto the outside of the pulley 5 via the nozzle 1206. This achieves real-time lubrication of the contact area between the pulley 5 and the slide rail 4, ensuring smooth lateral movement of the chute body 2. The system ensures the reliability and stability of the lubrication system. When the extrusion plate 1203 resets and releases the extrusion pressure on the rubber oil bladder 1204, the rubber oil bladder 1204 automatically returns to its initial shape based on its own elasticity. With the help of the negative pressure effect of the oil inlet pipe 1202, it automatically draws lubricating oil from the oil storage box 1201, completing the automatic replenishment of the oil in the rubber oil bladder 1204 and realizing the circulation and replenishment of the lubricating medium. At the same time, one-way valves 1207 are set at the key passages of the oil inlet pipe 1202 and the oil outlet pipe 1205, which can strictly limit the unidirectional flow direction of the lubricating oil, effectively avoiding failures such as backflow and turbulence of the lubricating oil, and ensuring the reliability and accuracy of the entire lubrication system.

[0038] Working Principle: When using this high-efficiency sluice based on magnesite desilication, the magnesite slurry first flows from top to bottom along the inclined sluice body 2, forming a stable turbulent field that drives the movement of mineral particles. Due to density differences, silica particles are more strongly coupled by friction and gravity at the bottom of the sluice, quickly settling to the bottom and accumulating in specific areas, with a significantly reduced downward velocity. Magnesite particles, with their lower density, maintain a faster forward speed under the dominant turbulent thrust, and are finally discharged through the concentrate outlet at the end of the sluice, achieving efficient desilication and purification. During this process, the first cylinder 3 can be activated to drive the bearing plate 8 to reciprocate left and right, causing the sluice body 2 to slide smoothly laterally along the slide rail 4 via the movable plate 6, support plate 7, and pulley 5, ensuring that the ore is evenly spread on the working surface, avoiding local overload or idling, and improving the efficiency of the receiving... To maximize contact surface utilization and ensure consistent sorting across the entire cross-section, the chute body 2 intermittently tilts up and down, while the movable plate 6 moves up and down synchronously within the guide space of the support plate 7, driving the extrusion plate 1203 to alternately extrude the two rubber oil bladders 1204 inside the support plate 7. During extrusion, the lubricating oil in the rubber oil bladder 1204 is precisely sprayed from the nozzle 1206 through the oil outlet pipe 1205 to the outside of the pulley 5, lubricating the contact surface between the pulley 5 and the slide rail 4. After the extrusion plate 1203 resets, the rubber oil bladder 1204 recovers through its own elasticity and is automatically replenished by drawing oil from the oil storage box 1201 through the negative pressure of the oil inlet pipe 1202. Furthermore, the key passages of the oil inlet pipe 1202 and the oil outlet pipe 1205 are equipped with one-way valves 1207 to limit the unidirectional flow of lubricating oil, prevent backflow and turbulence, and ensure reliable operation of the lubrication system.

[0039] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency chute based on desilication of magnesite, comprising a limiting frame (1), a chute body (2) installed on the upper inner side of the limiting frame (1), a first cylinder (3) installed on the right side of the bottom of the inner wall of the limiting frame (1), and a slide rail (4) fixed at the bottom of the inner wall of the limiting frame (1). Its features are: It also includes a support plate (7), the bottom of which is rolled to the upper surface of the slide rail (4) by a pulley (5), and a movable plate (6) is connected through the top of the inner wall of the support plate (7). A second cylinder (9) is installed on the left side of each of the two opposing support plates (7) by bolts. A bearing plate (8) is fixedly connected between the four support plates (7). A lubrication assembly is provided inside the support plate (7). A slider (10) is slidably connected to the left side of the lower surface of the chute body (2). A vibration assembly is provided on the lower surface of the chute body (2). The outer side of the chute body (2) is rotatably connected to the inner side of the limiting frame (1) via a rotating shaft (14). The four movable plates (6) are distributed at equal angles on the lower surface of the chute body (2). The top of the movable plate (6) is hinged to the lower surface of the chute body (2). The bottom of the movable plate (6) is slidably disposed inside the support plate (7). The bottom of the two sliders (10) is hinged to the telescopic ends of the two second cylinders (9). The lubrication assembly includes an oil reservoir (1201), which is installed on the upper surface of the support plate (8). A compression plate (1203) is fixed at the bottom of the movable plate (6). Rubber oil bladders (1204) are provided on both the upper and lower sides inside the support plate (7). The two rubber oil bladders (1204) are connected to the oil reservoir (1201) through an oil inlet pipe (1202). An oil outlet pipe (1205) is fixedly connected to the side of the support plate (7). A nozzle (1206) is installed at the bottom of the oil outlet pipe (1205). A one-way valve (1207) is installed inside both the oil inlet pipe (1202) and the oil outlet pipe (1205). The extrusion plate (1203) is distributed between the upper and lower rubber oil bladders (1204). The oil outlet pipe (1205) is connected to the interior of the upper and lower rubber oil bladders (1204). The nozzle (1206) at the bottom of the oil outlet pipe (1205) is inclined and the nozzle (1206) corresponds to the position of the pulley (5).

2. The high-efficiency sluice based on magnesite desilication according to claim 1, characterized in that: The vibration component includes a fixing frame (1102), which is fixedly installed on the lower surface of the chute body (2) by bolts. The inside of the fixing frame (1102) is slidably connected with striking blocks (1106) at equal intervals. A return spring (1109) is wound and fixed on the outer side of the striking block (1106), and the other end of the return spring (1109) is fixed on the inner wall of the fixing frame (1102). Telescopic plates (1101) are fixedly connected to both the left and right sides of the lower surface of the chute body (2). The telescopic end of the left telescopic plate (1101) is equipped with a motor (13), and a rotating rod (1103) is fixed to the output end of the motor (13). Cam (1105) are sleeved and fixed on the outer side of the rotating rod (1103) at equal intervals. Driving gears (1107) are sleeved and fixed on the outer side of the shaft end of the chute body (2). A rack (1108) is slidably connected to the inner wall of the limiting frame (1), and a connecting plate (1104) is hinged to the bottom of the rack (1108).

3. The high-efficiency sluice based on magnesite desilication according to claim 2, characterized in that: The rotating rod (1103) is connected by bearings to the inner sides of the telescopic ends of the two telescopic plates (1101), and one end of the rotating rod (1103) penetrates through the inside of the connecting plate (1104).

4. The high-efficiency sluice based on magnesite desilication according to claim 3, characterized in that: The positions of the cams (1105) correspond to those of the striking blocks (1106) one by one, and the outer side of the cam (1105) is in contact with the bottom of the striking block (1106). The rack (1108) is arranged in a "C" shape, and the rack (1108) is meshed with both of the two driving gears (1107).

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