An adjustable vibrating screen for multi-layer screening of ores

Abstract

An adjustable vibrating screen for multi-layer ore screening, relating to the field of vibrating screen technology, solves the problem in existing technologies where ore is prone to secondary crushing after screening, destroying the screening and grading results and affecting the screening effect. It includes a housing and a screening cylinder. The housing is hollow, with a discharge port at the bottom, where a layered vibrating screen is installed. The screening cylinder is rotatably connected inside the housing, comprising an inner cylinder and an outer cylinder. The inner cylinder is rotatably connected inside the outer cylinder, and both the inner and outer cylinders have screen holes. An adjusting component is provided between the inner and outer cylinders, allowing adjustment of their relative positions. The beneficial effect is that the screening cylinder ensures that ore at the critical crushing state is separated under sufficient force, effectively avoiding secondary crushing and guaranteeing the screening effect.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically to an adjustable vibrating screen for multi-layer screening of ores. Background Technology

[0002] Vibrating screens for ore screening are the core equipment for ore classification. They generate periodic vibrations, causing the ore to separate on the screen surface according to particle size differences. Coarse particles remain on the screen surface and are discharged, while fine particles pass through the screen holes to complete the classification. They are widely used in ore sorting.

[0003] Current vibrating screens generally have a structure similar to that described in patent application number "CN201822177354.X"—a multi-layered vibrating screen for mining. This includes a housing and a vibrator. A U-shaped elastic cloth is installed at the top of the housing, and this cloth is mounted on the upper part of an inclined frame. An upper screen is fixed inside the inclined frame. A second U-shaped elastic cloth is installed at the lower end of the inclined frame, and this second cloth is mounted on the upper part of the inclined frame. A lower screen is fixed inside the inclined frame. A third U-shaped elastic cloth is installed at the lower end of the inclined frame, and this third cloth is mounted on the upper part of an inclined slide plate. The upper screen performs initial screening of the ore, and the lower screen performs secondary screening. Multiple screenings separate the raw material into various sizes of ore. However, during ore screening, a large amount of ore is in a critical state of crushing. Insufficient force on the ore leads to secondary crushing after screening, disrupting the screening and grading results and affecting the screening effect.

[0004] Therefore, this utility model proposes an adjustable vibrating screen for multi-layer screening of ores to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable vibrating screen for multi-layer screening of ores, which solves the problem in the prior art that ores are prone to secondary crushing after screening, thereby destroying the screening and grading results and affecting the screening effect.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An adjustable vibrating screen for multi-layer screening of ore includes a housing and a screening cylinder. Multiple support legs are evenly connected to the bottom of the housing. The housing is hollow inside, and a discharge port is opened at the bottom of the housing. A layered vibrating screen is installed at the discharge port.

[0008] The screening cylinder is rotatably connected inside the machine housing. The screening cylinder is trapezoidal in shape, and its diameter gradually decreases from the inlet end to the outlet end. A first gear is coaxially connected to the inlet end of the screening cylinder. A first drive motor drives the first gear to rotate through a second gear. The first drive motor is connected to the side wall of the machine housing. A conveying pipe is also connected to the inlet end of the screening cylinder. The inlet end of the screening cylinder is rotatably connected to the conveying pipe. The conveying pipe is fixedly connected to the machine housing. A rotating roller is provided at the outlet end of the screening cylinder. The rotating rollers are symmetrically arranged at the bottom of the screening cylinder and rotatably connected to the machine housing. The rotating rollers abut against the screening cylinder.

[0009] The screening cylinder includes an inner cylinder and an outer cylinder. The inner cylinder is rotatably connected inside the outer cylinder. Both the inner cylinder and the outer cylinder are provided with screening holes. An adjustment component is provided between the inner cylinder and the outer cylinder, and the adjustment component can adjust the relative position between the inner cylinder and the outer cylinder.

[0010] Furthermore, the adjustment assembly includes an adjustment handle fixedly connected to the outside of the inner cylinder, the adjustment handle extending to the outside of the outer cylinder, a rotating groove corresponding to the adjustment handle on the outer cylinder, a locking bolt threaded onto the adjustment handle, and a T-slot corresponding to the locking bolt on the rotating groove; a pointer is provided on the inner cylinder, and multiple graduations are evenly provided on the outer cylinder corresponding to the pointer.

[0011] Furthermore, the layered vibrating screen includes a screen frame and a base. A first screen and a second screen are arranged sequentially from top to bottom inside the screen frame. The screen hole diameters of the first screen and the second screen decrease sequentially. A first vibrating motor is connected to the bottom of the screen frame. Multiple elastic support members are connected to the outer side wall of the screen frame. The other end of the elastic support member is connected to the base.

[0012] Furthermore, the bottom inner side of the casing is inclined, and a second vibration motor is connected to the bottom of the casing; both the first screen and the second screen are inclined, and the inclination directions of the first screen and the second screen are the same.

[0013] Furthermore, a spiral guide plate is provided on the inner wall of the inner cylinder, and the spiral guide plate is connected to the discharge end of the inner cylinder.

[0014] Furthermore, the surface of the rotating roller is provided with raised textures, which are connected in a ring on the surface of the rotating roller, and the outer cylinder is provided with an annular groove corresponding to the raised textures.

[0015] Furthermore, an inspection door is connected to the top of the chassis, and the inspection door is fixedly connected to the chassis by multiple bolts.

[0016] Furthermore, each of the support legs is connected to a cushioning pad at its bottom. The cushioning pad includes a rubber pad and a metal spring mesh disposed inside the rubber pad. The bottom of the rubber pad is provided with anti-slip texture.

[0017] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, the ore enters the feed end of the screening cylinder through a conveying pipe. The diameter of the screening cylinder gradually decreases from the feed end to the discharge end. The spiral guide plate on the inner wall of the inner cylinder rotates with the inner cylinder, pushing the ore along the axial direction of the screening cylinder towards the discharge end. The ore that meets the particle size requirements falls through the screen holes into the layered vibrating screen below, while the ore that does not pass through is discharged from the discharge end of the screening cylinder. The screening cylinder can ensure that the ore at the critical state of crushing is separated under sufficient force, which can effectively avoid secondary crushing and ensure the screening effect.

[0019] 2. The screening cylinder of this utility model and the layered vibrating screen form a multi-level screening structure. The screening cylinder first performs preliminary classification of the ore. The overlap of the screen holes of the inner and outer cylinders can be adjusted by the adjustment component. Combined with the pointer and scale, the screening particle size can be precisely controlled. The screen hole diameters of the first and second screens of the layered vibrating screen decrease sequentially, realizing the gradual refinement of the ore screening and greatly improving the screening accuracy. At the same time, a spiral guide plate is set in the screening cylinder, and the first and second screens are set at an incline, which speeds up the ore conveying speed and improves the screening efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0021] Figure 2 for Figure 1 A magnified view of part A;

[0022] Figure 3 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0023] Figure 4 This is the front view of the present invention;

[0024] Figure 5 This is a partial cross-sectional view of the main view of this utility model;

[0025] Figure 6 This is a top view of the present invention;

[0026] Figure 7 This is a partial cross-sectional view of the left side of this utility model;

[0027] In the diagram: 1. Chassis; 2. Support leg; 3. Buffer pad; 5. Discharge port; 6. First gear; 7. First drive motor; 8. Second gear; 9. Conveying pipe; 10. Rotating roller; 11. Raised texture; 12. Annular groove; 13. Inner cylinder; 14. Outer cylinder; 15. Spiral guide plate; 16. Adjusting handle; 17. Rotating groove; 18. Tightening bolt; 19. T-slot; 20. Pointer; 21. Scale; 22. Inspection door; 23. Second vibrating motor; 24. Screen frame; 25. Base; 26. First screen; 27. Second screen; 28. First vibrating motor; 29. ​​Elastic support. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] like Figure 1 and Figure 3 As shown, an adjustable vibrating screen for multi-layer ore screening includes a housing 1 and a screening cylinder. Multiple support legs 2 are evenly connected to the bottom of the housing 1. Each support leg 2 has a buffer pad 3 connected to its bottom. The buffer pad 3 includes a rubber pad and a metal spring mesh disposed inside the rubber pad. The bottom of the rubber pad has anti-slip textures. The housing 1 is hollow, and a discharge port 5 is opened at the bottom of the housing 1. A layered vibrating screen is installed at the discharge port 5. A maintenance door 22 is connected to the top of the housing 1 and is fixedly connected to the housing 1 by multiple bolts.

[0031] like Figure 4-6As shown, the layered vibrating screen includes a screen frame 24 and a base 25. A first screen 26 and a second screen 27 are arranged sequentially from top to bottom inside the screen frame 24, with the screen aperture diameter decreasing from the first screen 26 to the second screen 27. A first vibrating motor 28 is connected to the bottom of the screen frame 24, and multiple elastic support members 29 are connected to the outer wall of the screen frame 24. The other end of each elastic support member 29 is connected to the base 25. The bottom inner side of the housing 1 is inclined, and a second vibrating motor 23 is connected to the bottom of the housing 1. Both the first screen 26 and the second screen 27 are inclined in the same direction.

[0032] like Figure 5-7 As shown, the screening cylinder is rotatably connected inside the housing 1. The screening cylinder is trapezoidal in shape, and its diameter gradually decreases from the inlet end to the outlet end. A first gear 6 is coaxially connected to the inlet end of the screening cylinder. A first drive motor 7 drives the first gear 6 to rotate through a second gear 8. The first drive motor 7 is connected to the side wall of the housing 1. A conveying pipe 9 is also connected to the inlet end of the screening cylinder. The inlet end of the screening cylinder is rotatably connected to the conveying pipe 9. The conveying pipe 9 is fixedly connected to the housing 1. A rotating roller 10 is provided at the outlet end of the screening cylinder. The rotating roller 10 is symmetrically arranged at the bottom of the screening cylinder and rotatably connected to the housing 1. The rotating roller 10 abuts against the screening cylinder. The surface of the rotating roller 10 is provided with raised textures 11. The raised textures 11 are connected in annular shape on the surface of the rotating roller 10. The outer cylinder 14 has an annular groove 12 corresponding to the raised textures 11.

[0033] like Figure 2 and Figure 5 As shown, the screening cylinder includes an inner cylinder 13 and an outer cylinder 14. The inner cylinder 13 is rotatably connected inside the outer cylinder 14. Both the inner cylinder 13 and the outer cylinder 14 have screen holes. A spiral guide plate 15 is provided on the inner wall of the inner cylinder 13, and the spiral guide plate 15 is connected to the discharge end of the inner cylinder 13. An adjustment assembly is provided between the inner cylinder 13 and the outer cylinder 14, which can adjust the relative position between the inner cylinder 13 and the outer cylinder 14. The adjustment assembly includes an adjustment handle 16 fixedly connected to the outside of the inner cylinder 13, and the adjustment handle 16 extends to the outside of the outer cylinder 14. A rotating groove 17 is provided on the outer cylinder 14 corresponding to the adjustment handle 16. A clamping bolt 18 is threaded onto the adjustment handle 16. A T-slot 19 is provided on the rotating groove 17 corresponding to the clamping bolt 18. A pointer 20 is provided on the inner cylinder 13, and multiple scales 21 are evenly provided on the outer cylinder 14 corresponding to the pointer 20.

[0034] The working process of this utility model is as follows:

[0035] First, rotate the adjusting handle 16 to drive the inner cylinder 13 to rotate inside the outer cylinder 14. Based on the correspondence between the pointer 20 and the scale 21 of the outer cylinder 14, control the overlap of the sieve holes on the inner cylinder 13 and the outer cylinder 14, thereby achieving precise adjustment of the screening particle size.

[0036] The ore then enters the feed end of the screening cylinder through the conveying pipe 9. The first drive motor 7 starts, and its output shaft drives the second gear 8 to rotate. The second gear 8 meshes with the first gear 6, thereby driving the inner cylinder 13 and outer cylinder 14 of the screening cylinder to rotate synchronously. The rotating roller 10, inside the housing 1, passively rotates with the rotation of the screening cylinder. The raised texture 11 on its surface cooperates with the annular groove 12 of the outer cylinder 14, providing stable support for the screening cylinder and assisting its rotation through friction. The screening cylinder is trapezoidal in shape, with its diameter gradually decreasing from the feed end to the discharge end. The spiral guide plate 15 on the inner wall of the inner cylinder 13 rotates with the inner cylinder 13, pushing the ore along the axial direction of the screening cylinder towards the discharge end. Ore meeting the particle size requirements falls through the screen holes into the layered vibrating screen below, while ore that does not pass through is discharged from the discharge end of the screening cylinder. The screening cylinder ensures that ore at the critical crushing state is separated under sufficient force, effectively avoiding secondary crushing and guaranteeing the screening effect. The bottom of the inner side of the casing 1 is inclined, and in conjunction with the vibration of the second vibration motor 23, the ore falling into the bottom moves along the inclined surface to the discharge port 5 and is discharged.

[0037] The ore entering the layered vibrating screen first falls onto the first screen 26. The first vibrating motor 28 starts, and the screen frame 24 vibrates under the action of the elastic support member 29. The first screen 26 and the second screen 27 are set at an angle. Under the action of vibration, the ore slides down along the screen surface. The ore smaller than the screen hole of the first screen 26 falls into the second screen 27, and the remaining ore is discharged from the end of the first screen 26. The ore falling into the second screen 27 slides down along the screen surface under the action of vibration. The ore smaller than the screen hole of the second screen 27 passes through the screen and falls into the bottom of the machine box 1. The remaining ore is discharged from the end of the second screen 27.

[0038] The buffer pad 3 at the bottom of the support leg 2 absorbs vibration energy through rubber pads and an internal metal spring mesh, reducing shaking during equipment operation, while the anti-slip texture enhances equipment stability. The inspection door 22 facilitates equipment maintenance.

Claims

1. An adjustable vibrating screen for multi-layer screening of ore, comprising a housing (1) and a screening cylinder, characterized in that, The bottom of the casing (1) is evenly connected with multiple support legs (2); the casing (1) is hollow inside, and the bottom of the casing (1) is provided with a discharge port (5), and a layered vibrating screen is provided at the discharge port (5). The screening cylinder is rotatably connected inside the housing (1). The screening cylinder is trapezoidal in shape, and its diameter gradually decreases from the inlet end to the outlet end. A first gear (6) is coaxially connected to the inlet end of the screening cylinder. A first drive motor (7) drives the first gear (6) to rotate through a second gear (8). The first drive motor (7) is connected to the side wall of the housing (1). A conveying pipe (9) is also connected to the inlet end of the screening cylinder. The inlet end of the screening cylinder is rotatably connected to the conveying pipe (9). The conveying pipe (9) is fixedly connected to the housing (1). A rotating roller (10) is provided at the outlet end of the screening cylinder. The rotating roller (10) is symmetrically arranged at the bottom of the screening cylinder. The rotating roller (10) is rotatably connected to the housing (1). The rotating roller (10) abuts against the screening cylinder. The screening cylinder includes an inner cylinder (13) and an outer cylinder (14). The inner cylinder (13) is rotatably connected inside the outer cylinder (14). Screen holes are provided on both the inner cylinder (13) and the outer cylinder (14). An adjustment component is provided between the inner cylinder (13) and the outer cylinder (14). The adjustment component can adjust the relative position between the inner cylinder (13) and the outer cylinder (14).

2. The adjustable vibrating screen for multi-layer screening of ore according to claim 1, characterized in that The adjustment assembly includes an adjustment handle (16) fixedly connected to the outside of the inner cylinder (13), the adjustment handle (16) extending to the outside of the outer cylinder (14), a rotating groove (17) corresponding to the adjustment handle (16) on the outer cylinder (14), a tightening bolt (18) threadedly connected to the adjustment handle (16), a T-slot (19) corresponding to the tightening bolt (18) on the rotating groove (17); a pointer (20) is provided on the inner cylinder (13), and multiple scales (21) are evenly provided on the outer cylinder (14) corresponding to the pointer (20).

3. The adjustable vibrating screen for multi-layer screening of ore according to claim 1, characterized in that, The layered vibrating screen includes a screen frame (24) and a base (25). A first screen (26) and a second screen (27) are arranged sequentially from top to bottom inside the screen frame (24). The screen hole diameters of the first screen (26) to the second screen (27) decrease sequentially. A first vibrating motor (28) is connected to the bottom of the screen frame (24). A plurality of elastic support members (29) are connected to the outer side wall of the screen frame (24). The other end of the elastic support member (29) is connected to the base (25).

4. The adjustable vibrating screen for multi-layer screening of ore according to claim 3, characterized in that, The bottom of the inner side of the casing (1) is inclined, and a second vibration motor (23) is connected to the bottom of the casing (1); the first screen (26) and the second screen (27) are both inclined, and the inclination direction of the first screen (26) and the second screen (27) is the same.

5. The adjustable vibrating screen for multi-layer screening of ore according to claim 1, characterized in that, A spiral guide plate (15) is provided on the inner wall of the inner cylinder (13), and the spiral guide plate (15) is connected to the discharge end of the inner cylinder (13).

6. The adjustable vibrating screen for multi-layer screening of ore according to claim 1, characterized in that, The surface of the rotating roller (10) is provided with raised texture (11), and the raised texture (11) is connected in an annular shape on the surface of the rotating roller (10). The outer cylinder (14) is provided with an annular groove (12) corresponding to the raised texture (11).

7. The adjustable vibrating screen for multi-layer screening of ore according to claim 1, characterized in that, The top of the chassis (1) is connected to an inspection door (22), which is fixedly connected to the chassis (1) by multiple bolts.

8. The adjustable vibrating screen for multi-layer screening of ore according to claim 1, characterized in that The bottom of each support leg (2) is connected to a buffer pad (3). The buffer pad (3) includes a rubber pad and a metal spring mesh set inside the rubber pad. The bottom of the rubber pad is provided with anti-slip texture.

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