Spiral chute concentrating machine capable of automatically adjusting concentrate grade

Abstract

The invention discloses a spiral chute concentrating machine capable of automatically adjusting the concentrate grade, and relates to the technical field of gravity beneficiation, the spiral chute concentrating machine capable of automatically adjusting the concentrate grade comprises a shell support and a spiral groove, and the upper end of the shell support is provided with a uniform ore feeding mechanism; the multiple spiral grooves are combined and spliced to form a spiral ore dressing groove, ore intercepting grooves are formed in the ends, away from the uniform ore feeding mechanism, of the spiral ore dressing groove correspondingly, and a bearing platform is arranged on the sides, close to the spiral ore dressing groove, of the ore intercepting grooves. Automatic interception of ore belts and accurate separation of concentrates and middle tailings are achieved, adjustment is accurate, manpower and material resource input is reduced, meanwhile, uniform feeding of ore pulp is guaranteed through the uniform distribution groove and the ore feeding groove, the multiple sets of spiral ore dressing grooves can be combined according to needs, different structures can be selected according to mineral characteristics, the separation quality is improved, and an efficient and accurate solution is provided for mineral separation.

Description

Technical Field

[0001] This invention relates to the field of gravity mineral processing technology, and in particular to a spiral sluice concentrator that can automatically adjust the grade of concentrate. Background Technology

[0002] The spiral sluice is a typical film gravity separation device. The separation of minerals is completed within a very thin slurry layer. When the slurry is fed to the upper end of the spiral sluice, under the combined action of gravity, friction, buoyancy and centrifugal inertia, the slurry begins to move downward in a spiral rotation. During the rotation, stratification and separation gradually occur, eventually forming mineral bands. Finally, at the bottom of the spiral sluice, minerals are removed according to the bands using mineral blocks to obtain products with different specific gravities, thus completing the separation.

[0003] In existing spiral sluice gravity separation processes, the separation of concentrate and tailings mainly relies on workers observing the state of the separation zone and adjusting the position and angle of the separation blocks. Due to differences in the work experience of each operator, the judgment is highly subjective and difficult to achieve precise operation. In industrial production, there are not only a large number of ore cutting troughs on site, but also the ore zone formed by concentrate, middlings and tailings is easily affected by changes in the properties of the slurry, making it almost impractical to require operators to make timely adjustments. This has certain adverse effects on the operation. In order to overcome the shortcomings of existing technologies, we propose a spiral sluice mineral separator that can automatically adjust the concentrate grade. Summary of the Invention

[0004] The main objective of this invention is to provide a spiral sluice concentrator that can automatically adjust the grade of concentrate, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A spiral sluice concentrator capable of automatically adjusting concentrate grade includes an outer shell support and a spiral sluice. A uniform feeding mechanism is provided at the upper end of the outer shell support. Several spiral sluices are combined and spliced ​​to form a spiral concentrator. A cutting sluice is provided at the end of the spiral concentrator away from the uniform feeding mechanism. A carrying platform is provided on the side of the cutting sluice close to the spiral concentrator. A cutting mechanism is provided in the middle of the carrying platform. A feedback mechanism is provided on one side of the cutting mechanism. A ranging mechanism is provided on the side of the feedback mechanism close to the cutting mechanism. A camera positioning mechanism is provided on the upper side of the carrying platform.

[0007] The spiral ore dressing troughs are provided in two to four sets, and are interlocked in a spiral shape. The lower ends of the two to four sets of spiral ore dressing troughs are detachably connected to one side of the ore cutting trough.

[0008] Preferably, the uniform feeding mechanism includes a distribution trough detachably connected to the upper end of the outer shell support. Both sets of spiral ore dressing troughs can be detachably installed with a feeding trough on the side near the distribution trough. The side of the feeding trough near the distribution trough is connected to a connecting pipe, and the end of the connecting pipe away from the feeding trough is connected to the interior of the distribution trough.

[0009] Preferably, the interception mechanism includes a motor support frame detachably installed inside the bearing platform. A drive motor is detachably installed on one side of the motor support frame. The rotor of the drive motor passes through the lower part of the bearing platform and is detachably installed with a motor connecting shaft. A ore dividing block is detachably installed at the end of the motor connecting shaft away from the drive motor. The ore dividing block rotates at the junction of the spiral ore dressing trough and the interception trough. Mud baffles are provided on both sides of the bearing platform.

[0010] Preferably, the feedback mechanism includes a feedback frame mounted on one side of the motor support frame, a driven shaft rotatably mounted on one side of the feedback frame, a driven pulley detachably mounted in the middle of the driven shaft, a synchronous belt provided on the outer wall of the middle of the driven pulley, a feedback connecting shaft rotatably mounted on the side of the feedback frame away from the driven shaft, a feedback shaft pulley detachably mounted in the middle of the feedback connecting shaft, the feedback shaft pulley being connected to the driven pulley via the synchronous belt, a ranging mechanism being provided in the middle of the synchronous belt, a position detector being provided on the side of the feedback frame away from the driven shaft, a first gear detachably mounted at the junction of the rotor of the drive motor and the motor connecting shaft, a second gear meshing with the side of the first gear near the position detector, and the upper surface of the second gear being detachably mounted to one end of the feedback connecting shaft.

[0011] Preferably, the ranging mechanism includes a distance detector that slides in the middle of the timing belt.

[0012] Preferably, the camera positioning mechanism includes a slider that slides on the upper surface of the support platform, a camera bracket is provided on the side of the slider away from the support platform, a camera base is provided on the side of the camera bracket away from the slider, and a data acquisition camera is provided on the side of the camera base away from the camera bracket. The support platform can be fixed to the camera bracket by threaded bolts.

[0013] Preferably, a control cabinet is provided on the lower outer wall of the housing support, and a control unit is provided inside the control cabinet.

[0014] Preferably, the equalizing tank includes an equalizing shell, which is installed at one end of a connecting pipe and communicates with the connecting pipe. An auxiliary tank is provided inside the equalizing shell. An equalizing servo motor is detachably installed in the middle of the equalizing shell. An equalizing stirring rack is detachably installed at the rotor of the equalizing servo motor. A sealing ring is provided on the equalizing shell near the rotor of the equalizing servo motor, and the rotor of the equalizing servo motor passes through the sealing ring. A scraper is provided on the end of the equalizing stirring rack away from the equalizing servo motor, and the scraper is in contact with the inner wall of the auxiliary tank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this invention, through the cooperation of the intercepting trough, the dividing blocks, the drive motor, the acquisition camera, and the control unit, the acquisition camera can identify the color, shape, and other characteristics of the ore strip formed by concentrate, middlings, and tailings within the intercepting trough. After feature recognition, the acquisition camera transmits the recognition results to the control unit. The control unit controls the drive motor to adjust the position of the dividing blocks based on the recognition results, achieving automatic interception of the ore strip and accurate separation of concentrate, middlings, and tailings. Simultaneously, the spiral structure of the spiral beneficiation trough utilizes centrifugal force, gravity, and water flow to naturally separate minerals of different densities, with heavier minerals approaching the inner edge and lighter minerals tending towards the outer edge, ultimately flowing... Before the ore reaches the intercepting trough, the drive motor rotates the dividing blocks to perform preliminary separation and guide the flow of minerals. At the same time, the mudguard ensures stable operation of the equipment. The drive motor drives the distance detector on the synchronous belt to slide through gear transmission, transmitting position information to the position detector for precise positioning. The acquisition camera can be manually adjusted to acquire images of the ore and transmit the information to the control unit. The control unit integrates the information from the distance detector and the acquisition camera to control the drive motor and adjust the position of the dividing blocks, thereby achieving automatic control of the concentrate grade. In short, through the coordinated action of all parts, the mineral processing machine achieves a highly efficient, precise, and automated mineral processing process.

[0017] 2. In this invention, the ore first enters the uniform feeding mechanism. The equalization trough located at the upper end of the outer shell support distributes the ore evenly and transports it to the feeding trough on one side of the spiral concentrator through the connecting pipe. This process ensures that the ore can enter the subsequent separation process in a uniform state, providing a foundation for subsequent steps. The uniform feeding avoids the problem of poor separation effect in some areas due to uneven distribution of ore, and improves the overall stability and reliability of the separation. At the same time, this design also enables the concentrator to better adapt to different types and properties of ore, expanding its application range.

[0018] 3. In this invention, the combination of multiple sets of spiral concentrators brings great flexibility and efficiency to the mineral processing process. By combining different spiral cell structures as needed, separation can be carried out according to the precise requirements of mineral particle size and specific gravity difference. It can better guide mineral flow and has excellent separation effect for minerals with specific particle size and specific gravity. It plays a stabilizing role in various mineral separation scenarios. This combination of multiple sets of spiral concentrators greatly improves the separation quality of the slurry. The most suitable spiral cell structure can be flexibly selected and combined according to the characteristics of different minerals, thereby achieving more precise separation. Whether it is for minerals with small particle size and small specific gravity difference or for minerals with large particle size and significant specific gravity difference, the most suitable spiral cell combination can be found to ensure that the grade and recovery rate of the concentrate reach the best level. At the same time, this interchangeable design also provides convenience for the maintenance and upgrading of mineral processing equipment, reduces the operating cost and maintenance difficulty of the equipment, and improves the economic benefits and competitiveness of mineral processing enterprises. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the ore cutting trench of the present invention;

[0021] Figure 3 This is a schematic diagram of the spiral mineral processing tank of the present invention;

[0022] Figure 4 This is an exploded structural diagram of the uniform ore feeding mechanism of the present invention;

[0023] Figure 5 This is a cross-sectional view of the evenly divided outer shell structure of the present invention;

[0024] Figure 6 This is an exploded view of the interception mechanism of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the platform supporting this invention;

[0026] Figure 8 yes Figure 6 Enlarged structural diagram at point A;

[0027] Figure 9 This is a schematic diagram of the slider of the present invention;

[0028] Figure 10 yes Figure 8 Enlarged structural diagram at point B;

[0029] Figure 11 This is a schematic diagram of the structure of the mudguard of the present invention;

[0030] Figure 12 This is a schematic diagram of the feedback shaft pulley of the present invention;

[0031] Figure 13 This is a schematic diagram of the structure of the motor connecting shaft of the present invention;

[0032] Figure 14 This is a schematic diagram of the camera bracket structure of the present invention;

[0033] Figure 15 This is a schematic diagram of the acquisition camera of the present invention.

[0034] In the diagram: 1. Outer shell support; 2. Spiral groove; 3. Spiral ore dressing trough; 4. Cutting trough; 5. Ore dividing block; 6. Supporting platform; 9. Control unit; 10. Control cabinet; 26. First gear; 28. Mudguard; 29. ​​Second gear;

[0035] 100. Uniform feeding mechanism; 11. Feed trough; 12. Distribution trough; 121. Distribution shell; 122. Distribution servo motor; 123. Distribution mixing rack; 124. Scraper; 125. Auxiliary trough; 126. Sealing ring; 13. Connecting pipe;

[0036] 200. Cutting mechanism; 7. Drive motor; 14. Motor support frame; 15. Motor connecting shaft;

[0037] 300. Feedback mechanism; 16. Driven shaft; 17. Driven pulley; 18. Synchronous belt; 19. Feedback frame; 20. Feedback connecting shaft; 21. Position detector; 22. Feedback shaft pulley;

[0038] 400. Distance measuring mechanism; 23. Distance detector;

[0039] 500. Camera positioning mechanism; 8. Acquisition camera; 24. Camera bracket; 25. Camera base; 27. Slider. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0041] Example 1, as Figures 1-5As shown, the ore first enters the uniform feeding mechanism 100, and the slurry first enters the equalizing shell 121. Then, the equalizing servo motor 122 located in the middle of the equalizing shell 121 starts to operate. Its rotor rotates and drives the equalizing stirring frame 123, which is detachably installed at the rotor, to rotate together. Scraper plates 124 are provided at the ends of the equalizing stirring frame 123 away from the equalizing servo motor 122. As the equalizing stirring frame 123 rotates, the scraper plates 124 scrape the inner wall of the auxiliary tank 125. Since the scraper plates 124 are in contact with the inner wall of the auxiliary tank 125, the slurry adhering to the inner wall can be scraped off, so that the slurry can be fully stirred and mixed evenly in the auxiliary tank 125, thereby achieving the equalization treatment of the slurry and ensuring that the subsequent process can obtain a uniformly distributed slurry. At the same time, the rotor of the equalizing servo motor 122 is installed through the sealing ring 126 near its rotor in the equalizing shell 121. The sealing ring 126 prevents the slurry from affecting the inner wall of the ore. The operation of the equalization servo motor 122 ensures that the slurry is transported from the equalization tank 12 to the feed tank 11 on one side of the two sets of spiral concentrators 3 through the transmission channel of the connecting pipe 13. This ensures that the ore will not be blocked or have uneven flow rate during the transmission process. The connection between the feed tank 11 and the connecting pipe 13 is tight and firm, ensuring that the ore can flow smoothly from the connecting pipe 13 into the feed tank 11. After the ore enters the feed tank 11, the structure of the feed tank 11 allows the ore to flow into the spiral concentrator 3 in a stable and uniform state. This uniform feeding method provides a basis for subsequent separation. When the ore enters the spiral concentrator 3, it is evenly distributed. Then, under the spiral structure of the spiral concentrator 3 and the specific working environment, minerals with different specific gravities are better separated. At the same time, uniform feeding also helps to improve the stability and reliability of the entire beneficiation process, reduce the separation error caused by uneven ore distribution, and thus improve the grade and recovery rate of the concentrate.

[0042] Example 2, as Figures 1-5As shown, the ore is in the spiral concentrator 3. The design of the spiral concentrator 3 causes the ore to be affected by multiple forces, such as centrifugal force, gravity, and water flow. When the ore enters the spiral concentrator 3, minerals of different specific gravities begin to separate gradually during the continuous rotation and flow. Due to their higher specific gravity, heavy minerals move closer to the inner edge of the spiral trough under the combined action of centrifugal force and gravity, while light minerals, due to their lower specific gravity, are subjected to relatively less force and gradually move towards the outer edge. As the ore continues to flow in the spiral concentrator 3, this separation process continues, making the separation of heavy and light minerals more obvious. Guided by the spiral concentrator 3, the ore moves steadily towards the intercepting trough 4. During this process, the flow speed, flow direction, and separation effect of the ore are adjusted to ensure that minerals of different specific gravities can accurately reach their respective positions. When the ore finally reaches the intercepting trough, a mineral belt distribution has been formed, providing good conditions for subsequent precise interception and separation.

[0043] Example 3, as Figures 5-12 As shown, the slurry first enters the equalization shell 121. Then, the equalization servo motor 122 starts operating, driving the equalization stirring frame 123 at the rotor to rotate together. Scraper plates 124 are provided at the ends of the equalization stirring frame 123 away from the equalization servo motor 122. As the equalization stirring frame 123 rotates, the scraper plates 124 scrape the inner wall of the auxiliary tank 125. Since the scraper plates 124 are in contact with the inner wall of the auxiliary tank 125, the slurry adhering to the inner wall can be scraped off, allowing the slurry to be fully stirred and mixed evenly in the auxiliary tank 125. This achieves the equalization treatment of the slurry, ensuring that subsequent processes obtain a uniformly distributed slurry. Furthermore, the sealing ring 126 prevents the slurry from affecting the operation of the equalization servo motor 122. The slurry injected into the equalization tank 12 is connected via... The flow from pipe 13 is diverted through two connecting pipes 13, flowing out from two different feed troughs 11, and then into the spiral concentrator 3. Due to its spiral structure and specific working environment, minerals of different specific gravities begin to separate. Heavy minerals gradually approach the inner edge of the spiral trough, while light minerals tend to the outer edge. As the ore flows, before finally reaching the intercepting trough 4, the drive motor 7 installed on the motor support frame 14 inside the bearing platform 6 is started. This causes the output shaft of the drive motor 7 to drive the motor connecting shaft 15 to rotate, causing the dividing block 5 installed at one end of the motor connecting shaft 15 to rotate at the junction of the spiral concentrator 3 and the intercepting trough 4. This performs preliminary separation and guides the flow of minerals of different grades. The mudguards 28 on both sides of the bearing platform 6 prevent ore mud from affecting the operation of the internal structure of the bearing platform 6.

[0044] Example 4, as Figures 11-13As shown, when the slurry gradually reaches the bottom layer of the spiral concentrator 3 and approaches the intercepting trough 4, the drive motor 7 is started, driving the first gear 26 at the junction of its rotor and the motor connecting shaft 15 to rotate, which in turn drives the meshing second gear 29 to rotate. The second gear 29 drives the feedback connecting shaft 20 to rotate. The feedback shaft pulley 22 on the feedback connecting shaft 20 is connected to the driven pulley 17 via the synchronous belt 18. The distance detector 23 installed in the middle of the synchronous belt 18 serves as a ranging mechanism 400. As the synchronous belt 18 slides, it transmits the detected position information to the position detector 21 on one side of the feedback frame 19. As can be seen from the above, the feedback shaft pulley 22 and the driven pulley 17 are mutually driven by the synchronous belt 18. At the same time, since the distance detector 23 slides on the synchronous belt 18 in the middle of the feedback shaft pulley 22 and the driven pulley 17, when the synchronous belt 18 starts to drive the feedback shaft pulley 22 and the driven pulley 17, it synchronously measures the distance. Friction is applied to the distance detector 23, causing it to move synchronously with the transmission direction of the synchronous belt 18. Since the distance detector 23 can detect distance, when a suitable position is detected by the distance detector 23, the drive motor 7 will stop. After the drive motor 7 stops transmission, since the drive motor 7 is detachably connected to the first gear 26, the first gear 26 and the second gear 29 will stop transmission synchronously. Since the second gear 29 is detachably connected to the feedback connection shaft 20, the feedback shaft pulley 22 in the middle of the feedback connection shaft 20 and the driven pulley 17 will stop the transmission of the synchronous belt 18 synchronously. When the synchronous belt 18 stops transmission, the friction applied to the distance detector 23 is reduced, so the distance detector 23 stops moving and is positioned. The mudguard 28 has an opening on the side near the distance detector 23, which facilitates the distance detector 23 to detect and judge the position of the ore in the slurry.

[0045] Example 5, as Figures 1-15As shown, before separating the fine ore, tailings, and other ores in the slurry, the supporting platform 6 is first separated from the slider 27 and camera bracket 24 by manually twisting the bolts and nuts. After the supporting platform 6 is separated from the slider 27 and camera bracket 24, the slider 27 and the acquisition camera 8 connected to the upper part of the slider 27 are moved manually to adjust the position of the acquisition camera 8. When the slider 27 is slid on the upper surface of the supporting platform 6 by manual means, the camera bracket 24, camera base 25, and acquisition camera 8 are moved to the appropriate position and fixed with bolts. Then, the slurry is injected into the equalization tank 12. The slurry injected into the equalization tank 12 is diverted through the connecting pipe 13 and distributed through... The material flows out from two different feed troughs 11 through two connecting pipes 13, and then flows into the spiral ore separator 3. Due to its spiral structure and specific working environment, minerals of different specific gravities begin to separate. Heavy minerals gradually approach the inner edge of the spiral trough, while light minerals tend to the outer edge. As the ore flows, it eventually reaches the intercepting trough 4. At this point, image acquisition of the ore begins. The acquisition camera 8 transmits the image information to the control unit 9 inside the control cabinet 10 on the lower side of the outer wall of the outer casing support 1. The control unit 9 then analyzes and processes the information from the distance detector 23 and the acquisition camera 8, controls the drive motor 7, and adjusts the position of the ore block 5, thereby achieving the purpose of automatically controlling the concentrate grade.

[0046] The control cabinet 10 on the lower outer wall of the outer casing 1 is closely related to the operation and control of the entire ore dressing machine. The control unit 9 inside the control cabinet 10 plays a core regulatory role. The control unit 9 works in conjunction with the position detector 21, which is installed on one side of the feedback frame 19. When the drive motor 7 runs, it drives the synchronous belt 18 through a series of transmission mechanisms. The distance detector 23 in the middle of the synchronous belt 18 and related components in the feedback mechanism 300 work together. The position detector 21 transmits the detected position information to the control unit 9. The control unit 9 determines the position of the ore block 5 and the relevant status in the ore dressing process based on this information. At the same time, the control unit 9... Connected to the drive motor 7, the control unit 9 issues commands to the drive motor 7 based on various received data information, adjusting parameters such as the speed and direction of the drive motor 7, thereby controlling the position of the ore-separating block 5 at the junction of the spiral ore-separating trough 3 and the intercepting trough 4, achieving precise separation of minerals. In addition, the acquisition camera 8 identifies the color, shape and other features of the ore belt formed by concentrate, middlings and tailings in the intercepting trough 4, and transmits the identification results to the control unit 9. The control unit 9 integrates the information from the acquisition camera 8 and the position detector 21, and controls the drive motor 7 more accurately to achieve automatic interception of the ore belt, achieving the purpose of accurate separation of concentrate, middlings and tailings.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A spiral sluice concentrator capable of automatically adjusting concentrate grade, comprising an outer casing support (1) and a spiral sluice (2), characterized in that: The upper end of the outer shell support (1) is provided with a uniform feeding mechanism (100), and several spiral grooves (2) are combined and spliced ​​to form a spiral ore beneficiation trough (3). The spiral ore beneficiation trough (3) is provided with a cutting trough (4) at the end away from the uniform feeding mechanism (100). The cutting trough (4) is provided with a bearing platform (6) on the side close to the spiral ore beneficiation trough (3). The middle of the bearing platform (6) is provided with a cutting mechanism (200). The cutting mechanism (200) is provided with a feedback mechanism (300) on one side. The feedback mechanism (300) is provided with a ranging mechanism (400) on the side close to the cutting mechanism (200). The upper side of the bearing platform (6) is provided with a camera positioning mechanism (500). The spiral ore dressing trough (3) is provided in two to four sets, and is formed by interlocking with each other in a spiral shape. The lower ends of the two to four sets of spiral ore dressing troughs (3) are detachably connected to one side of the ore cutting trough (4).

2. The spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 1, characterized in that: The uniform feeding mechanism (100) includes a uniform distribution trough (12) detachably connected to the upper end of the outer shell support (1). Both sets of spiral ore dressing troughs (3) can be detachably installed with a feeding trough (11) on the side near the uniform distribution trough (12). The side of the feeding trough (11) near the uniform distribution trough (12) is connected to a connecting pipe (13). The end of the connecting pipe (13) away from the feeding trough (11) is connected to the interior of the uniform distribution trough (12).

3. The spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 1, characterized in that: The interception mechanism (200) includes a motor support frame (14) that can be detachably installed inside the bearing platform (6). A drive motor (7) is detachably installed on one side of the motor support frame (14). The rotor of the drive motor (7) passes through the lower part of the bearing platform (6) and is detachably installed with a motor connecting shaft (15). A ore-separating block (5) is detachably installed at the end of the motor connecting shaft (15) away from the drive motor (7). The ore-separating block (5) rotates at the junction of the spiral ore-separating trough (3) and the intercepting trough (4). Mudguards (28) are provided on both sides of the bearing platform (6).

4. A spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 3, characterized in that: The feedback mechanism (300) includes a feedback frame (19) mounted on one side of the motor support frame (14). A driven shaft (16) is rotatably mounted on one side of the feedback frame (19). A driven pulley (17) is detachably mounted in the middle of the driven shaft (16). A synchronous belt (18) is provided on the outer wall of the middle part of the driven pulley (17). A feedback connecting shaft (20) is rotatably mounted on the side of the feedback frame (19) away from the driven shaft (16). A feedback shaft pulley (22) is detachably mounted in the middle of the feedback connecting shaft (20). The synchronous belt (18) is connected to the driven pulley (17) for transmission. A ranging mechanism (400) is provided in the middle of the synchronous belt (18). A position detector (21) is provided on the side of the feedback frame (19) away from the driven shaft (16). A first gear (26) is detachably installed at the junction of the rotor of the drive motor (7) and the motor connecting shaft (15). A second gear (29) is meshed with the side of the first gear (26) close to the position detector (21). The upper surface of the second gear (29) is detachably installed on one end of the feedback connecting shaft (20).

5. A spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 4, characterized in that: The ranging mechanism (400) includes a distance detector (23) that slides in the middle of the timing belt (18).

6. A spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 1, characterized in that: The camera positioning mechanism (500) includes a slider (27) that slides on the upper surface of the support platform (6). A camera bracket (24) is provided on the side of the slider (27) away from the support platform (6). A camera base (25) is provided on the side of the camera bracket (24) away from the slider (27). A data acquisition camera (8) is provided on the side of the camera base (25) away from the camera bracket (24). The support platform (6) can be fixed to the camera bracket (24) by means of threaded bolts.

7. A spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 1, characterized in that: A control cabinet (10) is provided on the lower outer wall of the outer casing support (1), and a control unit (9) is provided inside the control cabinet (10).

8. A spiral sluice concentrator capable of automatically adjusting concentrate grade according to claim 2, characterized in that: The equal distribution tank (12) includes an equal distribution shell (121), which is installed at one end of the connecting pipe (13) and communicates with the connecting pipe (13). An auxiliary tank (125) is provided inside the equal distribution shell (121). An equal distribution servo motor (122) is detachably installed in the middle of the equal distribution shell (121). An equal distribution stirring rack (123) is detachably installed at the rotor of the equal distribution servo motor (122). A sealing ring (126) is provided near the rotor of the equal distribution servo motor (122), and the rotor of the equal distribution servo motor (122) passes through the sealing ring (126). A scraper (124) is provided at the end of the equal distribution stirring rack (123) away from the equal distribution servo motor (122), and the scraper (124) is in contact with the inner wall of the auxiliary tank (125).

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