A high-efficiency gold-separating drum screen

Abstract

This utility model discloses a high-efficiency gold-selecting drum screen, belonging to the field of gold selection technology. The high-efficiency gold-selecting drum screen includes a base. A return conveying component and a screening component are fixed to the top surface of the base. The screening component includes symmetrically arranged blocks with slots. Telescopic springs are symmetrically fixed to the inner top and bottom walls of the slots. Fixed blocks are fixed between the telescopic springs on both sides. Rotating blocks are rotatably connected to both fixed blocks. A connecting shaft is fixedly connected between the rotating blocks on both sides. A screening cylinder is fixedly connected to the connecting shaft. Multiple through holes are formed on the body of the screening cylinder. When the rotating blocks rotate, because both ends of the connecting shaft are eccentrically positioned on the rotating blocks, the connecting shaft will continuously oscillate up and down as it rotates. Simultaneously, the screening cylinder will move with it, thereby achieving a vibration effect on the screening cylinder and preventing the accumulation and blockage of the through holes.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a high-efficiency rotary screen for gold selection. Background Technology

[0002] A gold-separating drum screen is a device specifically designed for placer gold beneficiation. Through the rotation of the drum and the screening action, placer gold raw materials are classified according to particle size to achieve gold separation.

[0003] Chinese patent application CN202420210954.4 discloses a drum screen, specifically relating to the field of sorting equipment. The screen includes a cylindrical screen body, a rotary support, a support frame, and a drive mechanism. The rotary support is located in the middle of the screen body and is annular, comprising a rotating part on the outer ring and a fixed part on the inner ring. The rotating part can rotate around the fixed part. The inner side of the fixed part matches the diameter of the screen body so that the screen body can pass through the center of the fixed part. The fixed part and the support frame are fixedly connected. A connecting plate is provided on the screen body, and the connecting plate is fixedly connected to the rotating part. Rotating teeth are provided on the circumference of the rotating part. The drive mechanism includes a drive gear that meshes with the rotating teeth.

[0004] The above technical solution uses a rotary support as the support and rotation structure, which has a large load-bearing capacity and a simple structure. The screen is not used as a load-bearing component, and the side wall can be made thin for easy replacement. The rotary support is precision-machined, and the equipment operates with high precision. Screen replacement has no impact on the concentricity and roundness of the equipment. However, during the screening process, the cylindrical screen body only rotates and screens, which may lead to material accumulation and blockage of the screen holes. At the same time, it only performs a single screening and cannot perform multiple screenings on its own, which may result in incomplete screening and waste of raw materials. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency rotary screen for gold selection, so as to solve the problems mentioned in the background art above:

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-efficiency gold-selecting drum screen includes a base. A return conveying component and a screening component are fixed on the top surface of the base. The screening component includes symmetrically arranged symmetrical blocks with slots. A telescopic spring is symmetrically fixed to the inner top and bottom walls of the slots. A fixing block is fixed between the two telescopic springs. A rotating block is rotatably connected to each of the two fixing blocks. A connecting shaft is fixed between the two rotating blocks. A screening cylinder is fixedly connected to the connecting shaft. Multiple through holes are opened on the body of the screening cylinder.

[0008] Preferably, both ends of the connecting shaft are eccentrically mounted on the rotating block and are inclined.

[0009] By adopting the above technical solution, when the rotating block rotates, since both ends of the connecting shaft are eccentrically set on the rotating block, the connecting shaft will be in a state of constant up and down swaying when it rotates. At the same time, the screening cylinder will move with it, thereby achieving the vibration effect of the screening cylinder and avoiding the situation of accumulation and blockage of the through hole.

[0010] Preferably, a collection box is fixed between the two sets of symmetrical blocks, the bottom of the collection box converges towards the discharge platform from all sides, a connecting block is fixed between the two sets of symmetrical blocks, the connecting block has a feed inlet, and an inclined guide plate is fixed between the bottom of the connecting block and the screening cylinder.

[0011] By adopting the above technical solution, the feed inlet is used to replenish raw materials into the screening cylinder, and the inclined guide plate guides the added raw materials.

[0012] Preferably, the return assembly includes a return cylinder, a rotating rod is rotatably connected to the top wall of the return cylinder, and a helical blade is fixed on the rotating rod.

[0013] By adopting the above technical solution, the rotating rod drives the spiral blades to rotate when it rotates, and the screened material can be fed back upwards for further screening or discharged and collected in the direction of rotation of the rotating rod.

[0014] Preferably, a feeding platform is fixed between the return cylinder and the connecting block, and the feeding platform is inclined from the return cylinder toward the connecting block.

[0015] By adopting the above technical solution, the feeding platform is tilted towards the connecting block, making it easier for the material conveyed by the spiral blades to enter the screening cylinder.

[0016] Preferably, the other end of the discharge platform is fixed to the return cylinder, and the discharge platform is inclined from the collection box toward the return cylinder.

[0017] By adopting the above technical solution, the discharge platform is tilted from the collection box to the return cylinder, so that the material in the collection box can quickly enter the return cylinder.

[0018] Preferably, the return conveyor is configured to penetrate the base, the bottom of the return conveyor is fixedly provided with a discharge pipe, the discharge pipe is provided with a valve, and a support frame is fixed around the bottom surface of the base.

[0019] By adopting the above technical solution, the valve can be opened and the control rod can be reversed to change from feeding back to outputting, and the material can be discharged through the discharge pipe.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1) Raw materials are added to the screening cylinder through the feed port. The rotation of the rotating block will drive the connecting shaft to rotate. Since both ends of the connecting shaft are eccentrically set on the rotating blocks on both sides and are inclined, the connecting shaft will be in a state of constant up and down shaking when it follows the rotating block. At the same time, the screening cylinder will move with it, thereby achieving the vibration effect of the screening cylinder and avoiding the accumulation and blockage of the through holes.

[0022] 2) After the material screened in the screening cylinder enters the collection box, since the bottom of the collection box is in a state of convergence towards the feeding platform, the material will quickly enter the screening cylinder through the feeding platform. At the same time, the rotating rod drives the spiral blade to rotate, which can transport the material upward and back to the screening cylinder through the discharge platform. This achieves multiple screenings. After screening is completed, the rotating rod reverses and the valve opens to collect the screened material. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the present invention. Figure 1 ;

[0025] Figure 3 This is a schematic cross-sectional view of the present invention. Figure 2 ;

[0026] Figure 4 This is a schematic cross-sectional view of the present invention. Figure 3 .

[0027] The following are the labels in the diagram: 1. Base; 2. Feedback assembly; 3. Screening assembly; 4. Symmetrical block; 5. Empty trough; 6. Telescopic spring; 7. Fixed block; 8. Rotating block; 9. Coupling shaft; 10. Screening cylinder; 11. Through hole; 12. Collection box; 13. Discharge platform; 14. Connecting block; 15. Feed inlet; 16. Inclined guide plate; 17. Feedback cylinder; 18. Rotating rod; 19. Spiral blade; 20. Feeding platform; 21. Discharge pipe; 22. Valve; 23. Support frame. Detailed Implementation

[0028] Example 1

[0029] Please see Figures 1 to 4A high-efficiency gold-selecting drum screen includes a base 1. A return conveying component 2 and a screening component 3 are fixed on the top surface of the base 1. The screening component 3 includes symmetrically arranged symmetrical blocks 4. A slot 5 is opened on the symmetrical blocks 4. A telescopic spring 6 is symmetrically fixed on the inner top wall and inner bottom wall of the slot 5. A fixing block 7 is fixed between the two telescopic springs 6. A rotating block 8 is rotatably connected to both fixing blocks 7. A connecting shaft 9 is fixedly connected between the two rotating blocks 8. A screening cylinder 10 is fixedly connected to the connecting shaft 9. A plurality of through holes 11 are opened on the cylinder body of the screening cylinder 10. Both ends of the connecting shaft 9 are eccentrically set on the rotating blocks 8 and are inclined. When the rotating blocks 8 rotate, since both ends of the connecting shaft 9 are eccentrically set on the rotating blocks 8, the connecting shaft 9 will be in a state of continuous up and down swaying when it rotates. At the same time, the screening cylinder 10 will move with it, thereby achieving the vibration effect of the screening cylinder 10 and avoiding the accumulation and blockage of the through holes 11.

[0030] A collection box 12 is fixed between two sets of symmetrical blocks 4. The bottom of the collection box 12 converges towards the discharge platform 13 from all sides. A connecting block 14 is fixed between the two sets of symmetrical blocks 4. A feed inlet 15 is provided on the connecting block 14. An inclined guide plate 16 is fixed between the bottom of the connecting block 14 and the screening cylinder 10. A notch is provided on the outer wall of the collection box 12 at the position of the fixed block 7 so that the fixed block 7 can move up and down.

[0031] The steps of using this utility model are as follows: Raw materials are added to the screening cylinder 10 through the feed port 15. The rotation of the rotating block 8 will drive the connecting shaft 9 to rotate. Since both ends of the connecting shaft 9 are eccentrically set on the rotating blocks 8 on both sides and are inclined, the connecting shaft 9 will be in a state of continuous up and down shaking when it follows the rotating block 8. At the same time, the screening cylinder 10 will follow its movement, thereby achieving the vibration effect of the screening cylinder 10 and avoiding the situation of accumulation and blockage of the through hole 11.

[0032] Example 2

[0033] Please see Figures 1 to 4 The return conveying assembly 2 includes a return conveying cylinder 17. A rotating rod 18 is rotatably connected to the top wall of the return conveying cylinder 17. A spiral blade 19 is fixed on the rotating rod 18. When the rotating rod 18 rotates, it drives the spiral blade 19 to rotate. The screened material can be returned upwards for further screening or discharged and collected in the direction of rotation of the rotating rod 18.

[0034] A feeding platform 20 is fixed between the return conveyor 17 and the connecting block 14. The feeding platform 20 is inclined towards the connecting block 14, so that the material conveyed back by the spiral blade 19 can more easily enter the screening cylinder 10.

[0035] The other end of the discharge platform 13 is fixed to the return cylinder 17. The discharge platform 13 is tilted from the collection box 12 to the return cylinder 17, so that the material in the collection box 12 can quickly enter the return cylinder 17.

[0036] The return conveyor 17 is designed to penetrate the base 1. The bottom of the return conveyor 17 is fixedly equipped with a discharge pipe 21, and a valve 22 is provided on the discharge pipe 21. A support frame 23 is fixed around the bottom surface of the base 1. When the valve 22 is opened, the control rotating rod 18 is reversed to change from return conveying to output, and the material can be discharged through the discharge pipe 21.

[0037] The steps of using this utility model are as follows: After the material screened in the screening cylinder 10 enters the collection box 12, since the bottom surface of the collection box 12 is in a state of converging towards the feeding platform 20 from all sides, the material will quickly enter the screening cylinder 10 through the feeding platform 20. At the same time, the rotating rod 18 rotates, driving the spiral blade 19 to rotate, which can transport the material upward and return it to the screening cylinder 10 through the discharge platform 13. This achieves multiple screenings. After screening is completed, the rotating rod 18 reverses and the valve 22 opens to collect the screened material.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency gold-selecting drum screen, comprising a base (1), characterized in that: The top surface of the base (1) is fixed with a return assembly (2) and a screening assembly (3). The screening assembly (3) includes symmetrically arranged symmetrical blocks (4). A slot (5) is opened on the symmetrical block (4). A telescopic spring (6) is symmetrically fixed on the inner top wall and inner bottom wall of the slot (5). A fixing block (7) is fixed between the telescopic springs (6) on both sides. A rotating block (8) is rotatably connected to the fixing block (7) on both sides. A connecting shaft (9) is fixedly connected between the rotating blocks (8) on both sides. A screening cylinder (10) is fixedly connected to the connecting shaft (9). A plurality of through holes (11) are opened on the cylinder body of the screening cylinder (10).

2. The high-efficiency gold-selecting drum screen according to claim 1, characterized in that: Both ends of the connecting shaft (9) are eccentrically mounted on the rotating block (8) and are inclined.

3. The high-efficiency gold-selecting drum screen according to claim 1, characterized in that: A collection box (12) is fixed between the two sets of symmetrical blocks (4). The bottom of the collection box (12) converges towards the discharge platform (13) from all sides. A connecting block (14) is fixed between the two sets of symmetrical blocks (4). A feed inlet (15) is opened on the connecting block (14). An inclined guide plate (16) is fixed between the bottom of the connecting block (14) and the screening cylinder (10).

4. The high-efficiency gold-selecting drum screen according to claim 1, characterized in that: The return assembly (2) includes a return cylinder (17), a rotating rod (18) is rotatably connected to the inner top wall of the return cylinder (17), and a spiral blade (19) is fixed on the rotating rod (18).

5. A high-efficiency gold-selecting drum screen according to claim 4, characterized in that: A feeding platform (20) is fixed between the return cylinder (17) and the connecting block (14), and the feeding platform (20) is inclined from the return cylinder (17) toward the connecting block (14).

6. A high-efficiency gold-selecting drum screen according to claim 3, characterized in that: The other end of the discharge platform (13) is fixed on the return cylinder (17), and the discharge platform (13) is tilted from the collection box (12) towards the return cylinder (17).

7. A high-efficiency gold-selecting drum screen according to claim 5, characterized in that: The return cylinder (17) is set through the base (1). The bottom of the return cylinder (17) is fixedly provided with a discharge pipe (21). A valve (22) is provided on the discharge pipe (21). A support frame (23) is fixed around the bottom surface of the base (1).

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