Multistage screening device for tailing slag

Abstract

The multistage screening device comprises a screening bin, a top cover is movably connected to an opening in the top of the screening bin in a clamped mode, a motor is fixedly connected to the top of the top cover, a connecting shaft is fixedly connected to the end of the motor, and the connecting shaft penetrates through the top and the bottom of the top cover; the outer side of the connecting shaft is sleeved with a plurality of filter screens with different mesh diameters, the filter screens are in threaded connection with the screening bin, the outer side of the connecting shaft is further fixedly connected with a plurality of turning plates, and the bottom of each turning plate is fixedly connected with a brush. According to the screening device, through the filter screen in the screening bin, tailing slag can be screened, a motor is started to enable a connecting shaft to rotate, and a turning plate can be driven to rotate, so that the tailing slag on the filter screen can be turned over, the tailing slag is prevented from being accumulated on the filter screen, the filter screen can be wiped through a brush when the turning plate rotates, and the filtering effect is improved. Fine particles on meshes of the filter screen can be conveniently brushed out, and the filter screen is prevented from being blocked.

Description

Technical Field

[0001] The invention belongs to the technical field of slag screening and utilization, and in particular relates to a multi-stage screening device for tailings slag. Background Art

[0002] Slag is a by-product of the blast furnace ironmaking process. During the ironmaking process, iron oxide is reduced to metallic iron at high temperature, and impurities such as silica and alumina in the iron ore react with lime and other substances to form a molten material with silicates and aluminosilicates as the main components. After quenching, it becomes a loose and porous granular material, which is blast furnace slag, referred to as slag. In order to facilitate the treatment of slag, it is usually necessary to use a screening device to screen the tailings slag. The screening device includes a frame, a mounting frame, a vibration mechanism, a first screening layer, a second screening layer and a third screening layer. The first, second and third screening layers are installed on the mounting frame from top to bottom, and the mounting frame is elastically connected to the frame. The screening device is equipped with three screening layers, which can screen three materials of different sizes at one time, and the screening is convenient and efficient.

[0003] In the existing technology, Chinese patent CN220277576U discloses a slag screening device, including a support body, a screen box is arranged inside the support body, the screen box is connected to the support body through a vibration assembly, the vibration assembly includes two guide rods fixedly connected to one side of the screen box and a drive rod fixedly connected to the other side of the screen box, the upper surface of the support body is fixedly connected with two guide blocks corresponding to the guide rods, the guide rods pass through the guide blocks and are slidably connected to the guide blocks, the outer sleeve of the guide rods is provided with a reset spring, the drive rod passes through the fixed seat and is slidably connected to the fixed seat, the outer surface of the support body is provided with a motor, and the output end of the motor is provided with an extrusion convex block for cooperating with the reset spring to drive the drive rod to reciprocate. The screening device with a simple structure formed by using the support body in combination with the vibration assembly can screen the ore, and at the same time, the screen box is placed inside the reservoir for screening, which can improve the cleaning effect during screening, and the screening time is easy to control.

[0004] However, the slag screening equipment provided in the above technical solution still has many disadvantages in actual use. For example, when screening tailings, fine particles in the tailings are easily stuck in the mesh holes of the screening components, blocking the mesh holes, which can easily lead to the accumulation of tailings and affect the screening of tailings. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A multi-stage screening device for tailings comprises a screening bin, one side and the top of the screening bin are provided with openings, a top cover is movably connected to the top opening of the screening bin, a motor is fixedly connected to the top of the top cover, a connecting shaft is fixedly connected to the end of the motor, and the connecting shaft passes through the top and bottom of the top cover, a plurality of filter screens with different mesh diameters are sleeved on the outer side of the connecting shaft, the filter screens are threadedly connected to the screening bin, a plurality of flaps are also fixedly connected to the outer side of the connecting shaft, a brush is fixedly connected to the bottom of each flap, and the bottom surface of the brush fits the top surface of the filter screen, and a sealed bin door is rotatably connected to one side opening of the screening bin.

[0008] Preferably, the multiple filter screens are evenly distributed about the central axis of the connecting shaft, the mesh diameters of the multiple filter screens decrease from top to bottom, and the multiple flaps are evenly distributed in a ring shape about the central axis of the connecting shaft.

[0009] Preferably, a material injection port for pouring slag is provided on the top surface of the top cover, and sliding covers are provided on both sides of the material injection port. A guide rail for sliding the sliding cover is also provided on the top of the top cover, and the sliding cover and the guide rail are connected by a slider, and the bottom surface of the sliding cover is in contact with the top surface of the top cover.

[0010] Preferably, a connecting frame is fixedly connected to the outer side of the screening bin, and ropes are fixedly connected to both sides of the connecting frame.

[0011] Preferably, a base is provided at the bottom of the screening bin, and a plurality of rollers are rotatably connected to the bottom of the base, and the plurality of rollers are evenly distributed in a ring shape about the central axis of the base.

[0012] Preferably, the bottom of the base is also provided with a plurality of threaded holes, and the base is threadedly connected to a threaded rod through the threaded holes, a foot is fixedly connected to the bottom end of the threaded rod, and the plurality of threaded holes and the plurality of rollers are alternately distributed.

[0013] Preferably, the vertical center line of the filter screen coincides with the center axis of the connecting shaft, and a circular hole is provided at the center of the filter screen, and the inner diameter of the circular hole of the filter screen coincides with the outer diameter of the connecting shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention can screen the tailings through the filter screen inside the screening bin, and a plurality of filter screens with different mesh diameters are arranged inside the screening bin, so that the tailings entering the screening bin can be screened in multiple layers, thereby improving the screening quality. The motor is started to rotate the connecting shaft, which can drive the flap to rotate, thereby turning the tailings on the filter screen to prevent the tailings from accumulating on the filter screen. The filter screen can be wiped with a brush when the flap rotates, so that fine particles on the mesh of the filter screen can be brushed out to prevent the filter screen from being blocked, and the filter screen can also be cleaned. The sealed bin door is opened to facilitate opening the screening bin and to facilitate classification and treatment of the screened tailings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the bottom three-dimensional structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the overall top view structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting shaft of the present invention;

[0020] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0021] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0022] 1. Screening bin; 2. Top cover; 3. Motor; 4. Connecting shaft; 5. Filter screen; 6. Flap; 7. Brush; 8. Sealing bin door; 9. Injection port; 10. Sliding cover; 11. Guide rail; 12. Connecting frame; 13. Rope; 14. Base; 15. Roller; 16. Threaded rod; 17. Foot pad. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0026] See also Figure 1-5 The present invention provides an embodiment: a multi-stage screening device for tailings, comprising a screening bin 1, one side and the top of the screening bin 1 are both provided with openings, a base 14 is provided at the bottom of the screening bin 1, a plurality of rollers 15 are rotatably connected to the bottom of the base 14, the plurality of rollers 15 are evenly distributed in a ring shape about the central axis of the base 14, a plurality of threaded holes are also provided at the bottom of the base 14, and a threaded rod 16 is threadedly connected to the base 14 through the threaded holes, a pad 17 is fixedly connected to the bottom end of the threaded rod 16, the plurality of threaded holes and the plurality of rollers 15 are alternately distributed, the device can be moved to a designated location by rolling the rollers 15, so that the device is easy to move, the threaded rod 16 is rotated to make the pad 17 descend, and the pad 17 is brought into contact with the external ground, so that the device can be propped up, so that after the device is moved to the designated location, the device can be stably placed on the bottom surface, and the arrangement of the base 14 can protect the bottom surface of the screening bin 1 and prevent wear between the bottom surface of the screening bin 1 and the external ground.

[0027] The outer side of the screening bin 1 is fixedly connected with a connecting frame 12, and both sides of the connecting frame 12 are fixedly connected with ropes 13. The device can be hung by using the ropes 13 on the connecting frame 12, so that the screening bin 1 can be shaken conveniently.

[0028] A material injection port 9 for pouring slag is provided on the top surface of the top cover 2, and slide covers 10 are provided on both sides of the material injection port 9. A guide rail 11 for sliding the slide cover 10 is also provided on the top of the top cover 2, and the slide cover 10 and the guide rail 11 are connected by a slider. The bottom surface of the slide cover 10 fits with the top surface of the top cover 2. Through the guide rail 11 on the top cover 2 and the use of the slider, the slide cover 10 can be slid and moved away from the material injection port 9. The tailings slag that needs to be screened can be removed by using the material injection port 9.

[0029] A top cover 2 is movably connected to the top opening of the screening bin 1, a motor 3 is fixedly connected to the top of the top cover 2, a connecting shaft 4 is fixedly connected to the end of the motor 3, and the connecting shaft 4 passes through the top and bottom of the top cover 2, and a plurality of filter screens 5 with different mesh diameters are sleeved on the outside of the connecting shaft 4, and the plurality of filter screens 5 are evenly distributed about the central axis of the connecting shaft 4, and the mesh diameters of the plurality of filter screens 5 decrease successively from top to bottom, and the vertical center line of the filter screen 5 coincides with the central axis of the connecting shaft 4, and a circular hole is provided in the center of the filter screen 5, and the inner diameter of the circular hole of the filter screen 5 coincides with the outer diameter of the connecting shaft 4, and a plurality of flaps 6 are evenly distributed in a ring shape about the central axis of the connecting shaft 4, and the filter screen 5 is threadedly connected to the screening bin 1, and a plurality of flaps 6 are also fixedly connected to the outside of the connecting shaft 4, and the bottom of each flap 6 is fixedly connected There is a brush 7, and the bottom surface of the brush 7 is in contact with the top surface of the filter screen 5. The tailings can be screened through the filter screen 5 inside the screening bin 1. A plurality of filter screens 5 with different mesh diameters are arranged inside the screening bin 1, which can perform multi-layer screening on the tailings entering the screening bin 1 and improve the screening quality. The motor 3 is started to rotate the connecting shaft 4, which can drive the flap 6 to rotate, so that the tailings on the filter screen 5 can be turned over to prevent the tailings from accumulating on the filter screen 5. The brush 7 can be used to wipe the filter screen 5 when the flap 6 rotates, so that the fine particles on the mesh of the filter screen 5 can be brushed out to prevent the filter screen 5 from being blocked. A sealed bin door 8 is rotatably connected to the opening on one side of the screening bin 1. The sealed bin door 8 is opened to facilitate the opening of the screening bin 1 and to facilitate the classification and treatment of the screened tailings.

[0030] Working principle: When using the device, first, the roller 15 is rolled to move the device to the designated location, making it easy to move. The threaded rod 16 is rotated to lower the foot 17, and the foot 17 is brought into contact with the external ground to prop up the device, so that the device can be moved to the designated location. Then, the device is stably placed on the bottom surface. The base 14 is set to protect the bottom surface of the screening bin 1 to prevent wear between the bottom surface of the screening bin 1 and the external ground. The rope 13 on the connecting frame 12 can be used to hang the device, which is convenient for shaking the screening bin 1. The guide rail 11 on the top cover 2 and the use of the slider can make the sliding cover 10 slide, and the sliding cover 10 is moved away from the injection port 9. The injection port 9 can be used to inject the required material. The tailings to be screened can be screened through the filter screen 5 inside the screening bin 1, and a plurality of filter screens 5 with different mesh diameters are arranged inside the screening bin 1, which can perform multi-layer screening on the tailings entering the screening bin 1 and improve the screening quality. The motor 3 is started to rotate the connecting shaft 4, which can drive the flap 6 to rotate, so that the tailings on the filter screen 5 can be turned over to prevent the tailings from accumulating on the filter screen 5. The filter screen 5 can be wiped with a brush 7 when the flap 6 rotates, so as to brush out the fine particles on the mesh of the filter screen 5 and prevent the filter screen 5 from being blocked. At the same time, it is also convenient to clean the filter screen 5. The sealed bin door 8 is opened to facilitate the opening of the screening bin 1, so as to facilitate the classification and treatment of the tailings on each layer of the filter screen 5 after screening, and then recycle them.

[0031] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A multi-stage screening device for tailings, comprising a screening bin (1), wherein one side and the top of the screening bin (1) are both provided with openings, characterized in that: The top opening of the screening bin (1) is movably connected with a top cover (2), the top of the top cover (2) is fixedly connected with a motor (3), the end of the motor (3) is fixedly connected with a connecting shaft (4), and the connecting shaft (4) passes through the top and bottom of the top cover (2), the outer side of the connecting shaft (4) is sleeved with a plurality of filter screens (5) with different mesh diameters, the filter screens (5) and the screening bin (1) are threadedly connected, the outer side of the connecting shaft (4) is also fixedly connected with a plurality of flaps (6), the bottom of each flap (6) is fixedly connected with a brush (7), and the bottom surface of the brush (7) is in contact with the top surface of the filter screen (5), and a sealing bin door (8) is rotatably connected to one side opening of the screening bin (1).

2. The multi-stage screening device for tailings according to claim 1, characterized in that: The plurality of filter screens (5) are evenly distributed about the central axis of the connecting shaft (4), the mesh apertures of the plurality of filter screens (5) decrease in sequence from top to bottom, and the plurality of flaps (6) are evenly distributed in a ring shape about the central axis of the connecting shaft (4).

3. The multi-stage screening device for tailings according to claim 2, characterized in that: The top surface of the top cover (2) is provided with a material injection port (9) for pouring slag, and sliding covers (10) are arranged on both sides of the material injection port (9). The top of the top cover (2) is also provided with a guide rail (11) for sliding the sliding cover (10), and the sliding cover (10) and the guide rail (11) are connected by a slider, and the bottom surface of the sliding cover (10) is in contact with the top surface of the top cover (2).

4. The multi-stage screening device for tailings according to claim 1, characterized in that: The outer side of the screening bin (1) is fixedly connected to a connecting frame (12), and both sides of the connecting frame (12) are fixedly connected to ropes (13).

5. The multi-stage screening device for tailings according to claim 4, characterized in that: The bottom of the screening bin (1) is provided with a base (14), the bottom of the base (14) is rotatably connected to a plurality of rollers (15), and the plurality of rollers (15) are evenly distributed in a ring shape about the central axis of the base (14).

6. The multi-stage screening device for tailings according to claim 5, characterized in that: The bottom of the base (14) is also provided with a plurality of threaded holes, and the base (14) is threadedly connected to a threaded rod (16) through the threaded holes, and a pad (17) is fixedly connected to the bottom end of the threaded rod (16), and the plurality of threaded holes and the plurality of rollers (15) are alternately distributed.

7. The multi-stage screening device for tailings according to claim 2, characterized in that: The vertical center line of the filter screen (5) coincides with the center axis of the connecting shaft (4), and a circular hole is provided at the center of the filter screen (5), and the inner diameter of the circular hole of the filter screen (5) coincides with the outer diameter of the connecting shaft (4).

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