Multi-stage screening machine

Abstract

The multi-stage screening machine relates to the technical field of screening and comprises a screening box, a vibration motor is fixed to the bottom of the screening box, supporting plates are fixed to the front side wall and the rear side wall of the screening box through paired limiting rods and springs, and electric telescopic rods with a moving function and rolling wheels are arranged at the bottom ends of the supporting plates. A first screen, a second screen and a third screen with the screening function are arranged in the screening box, first discharging openings are formed in the positions, corresponding to the bottom ends of the first screen, the second screen and the third screen, of the side wall of the screening box and the bottom end of the left side wall of the screening box correspondingly, and motors and magnetic separation rollers with the magnetic screening function are arranged at the bottoms of the first discharging openings correspondingly. The magnetic separation rollers can screen magnetic materials contained in steel slag screened at each stage, screening is more thorough, the first screen mesh, the second screen mesh and the third screen mesh are obliquely installed, the bottom in the screening box is obliquely arranged, the screened steel slag cannot be accumulated, and the working efficiency is improved; and the screening machine can be moved conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of screening, and in particular to a multi-stage screening machine. Background Art

[0002] Steel slag is a by-product of the steelmaking process. It is composed of various oxides formed by the oxidation of impurities such as silicon, manganese, phosphorus, and sulfur in pig iron during the smelting process, as well as salts generated by the reaction of these oxides with solvents. With the development of the steel industry, the amount of steel slag has also increased. At present, there are many steel slag treatment processes. The most direct one is to use loaders, electric shovels and other equipment to dig and load the hot-melt slag after treatment, and then transport it to the slag dump. The storage of steel slag not only occupies a large amount of arable land and pollutes the environment, but also contains recyclable steel in the steel slag. Therefore, we need to recycle the steel slag. When recycling the steel slag, a screening machine is needed to screen the steel slag.

[0003] The prior art announcement number CN214487358U discloses a multi-stage screening system for magnetic materials in a steel slag recycling production process, including a box, both sides of the top of the box are connected with a feed pipe, a driving motor is fixedly connected to the center of the top of the box, the bottom of the output end of the driving motor penetrates the inner cavity of the box and is fixedly connected to a stirring rod, and a stirring plate is fixedly sleeved on the top of the surface of the stirring rod. The utility model has the advantages of multi-stage efficient screening and anti-blocking through the coordinated use of a box, an inclined plate, a magnetic separation roller, a guide plate, a baffle, a screening frame, a screen plate, bristles, a mounting plate, a stirring plate, a driving motor, a stirring rod, a scraper plate, a funnel, a vibration motor, a screen hole and a buffer spring, which solves the problem that the existing screening device is usually single-stage or two-stage screening, the screening effect is poor, and it cannot meet the screening needs of magnetic materials. At the same time, the screen is easily blocked during the screening process.

[0004] In the process of steel slag recycling, it is necessary to screen the magnetic materials. Although the above-mentioned screening device has the function of magnetic screening, it only screens the magnetic materials on the steel slag at the end of screening. It does not screen the magnetic materials on the steel slag at each level of screening, resulting in incomplete screening of the magnetic materials. Moreover, the screen plate in the above-mentioned screening device is horizontally arranged, and the screened steel slag cannot be discharged in time, and will accumulate on the screen, which requires frequent cleaning and reduces work efficiency. In addition, there is no mobile structure on the above-mentioned steel slag screening device. When it needs to be transported, it needs to be transported with the help of other transportation tools, which is not convenient enough during transportation.

[0005] Therefore, it is desired to provide a multi-stage screening machine. Summary of the invention

[0006] In this embodiment, a multi-stage screening machine is provided to solve the problem that only the last steel slag screened is screened for magnetic materials, and the steel slag screened at each stage is not screened for magnetic materials, resulting in incomplete magnetic material screening. Moreover, the screen plate in the above-mentioned screening device is horizontally arranged, and the screened steel slag cannot be discharged in time, and will accumulate on the screen, requiring regular cleaning, reducing work efficiency. In addition, there is no mobile structure on the above-mentioned steel slag screening device. When it needs to be transported, it needs to be transported with the help of other transportation tools, which is not convenient during transportation.

[0007] According to one aspect of the present application, a multi-stage screening machine is provided, including a screening box, a vibration motor is fixed at the bottom of the screening box, support plates are fixed to the front and rear side walls of the screening box through multiple groups of limit rods and springs, the bottom ends of the support plates are provided with electric telescopic rods and rollers with moving functions, screen 1, screen 2 and screen 3 with screening functions are provided in the screening box, the side walls of the screening box corresponding to the bottom ends of screen 1, screen 2 and screen 3 and the bottom end of the left side wall of the screening box are provided with discharge port 1, and the bottom of the discharge port 1 is provided with a motor and a magnetic separation roller with magnetic screening function.

[0008] Specifically, a plurality of groups of limit rods and springs are correspondingly fixed on the two side walls of the sub-screen box, the springs are sleeved on the outside of the limit rods, and the other ends of the limit rods and the springs are fixed on the inner side wall of the support plate.

[0009] Specifically, mounting grooves are provided on both sides of the bottom end of the support plate, an electric telescopic rod is fixed at the top of the mounting groove, and a roller is fixed at the bottom of the electric telescopic rod through a mounting plate.

[0010] Specifically, a feed hopper is provided on the top of the sub-screening box, a screen is fixed at the top of the sub-screening box, the screen is inclined, a material guide plate is fixed on the inner side wall of the sub-screening box at the bottom of the high end of the screen, and the material guide plate and the screen are parallel to each other.

[0011] Specifically, a second screen is fixed in the screening box below the first guide plate, the second screen is tilted, a second guide plate is fixed on the inner side wall of the screening box at the bottom of the high end of the second screen, and the second guide plate and the second screen are parallel to each other.

[0012] Specifically, a screen mesh 3 is fixed in the sub-screening box below the second material guide plate, the screen mesh 3 is tilted, and the bottom of the sub-screening box is tilted.

[0013] Specifically, a magnetic material screening frame is fixed on the side wall of the screening box at the bottom of the first discharge port, and a second discharge port is arranged at the bottom of the outer side wall of the magnetic material screening frame.

[0014] Specifically, a discharge port three is arranged at the inner end of the bottom of the magnetic material screening frame.

[0015] Specifically, a motor is fixed on the front side wall of the magnetic material screening frame, and a magnetic separation roller is fixed on the output end of the motor through the side wall of the magnetic material screening frame. The other end of the magnetic separation roller is rotatably connected to the inner wall on the other side of the magnetic material screening frame.

[0016] Specifically, a scraper is provided at the bottom of the magnetic separation roller, and two ends of the scraper are fixed on the inner walls on both sides of the magnetic material screening frame.

[0017] Through the above embodiments of the present application, a magnetic material screening frame is provided at the bottom of the discharge pipe, and magnetic separation rollers are installed in the magnetic material screening frame, so that the magnetic material contained in the steel slag of each level of screening can be screened, so that the screening is more thorough and the screening effect is improved, and the screen one, screen two and screen three are installed at an angle, and the bottom of the screening box is set at an angle, the screened steel slag will not accumulate on the bottom of the screen one, screen two, screen three and the screening box, and does not need to be cleaned, thereby improving work efficiency, and multiple sets of electric telescopic rods and rollers with moving functions are arranged at the bottom of the support plate to facilitate the movement of the screening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0020] Figure 2 This is a front view structural schematic diagram of an embodiment of the present application;

[0021] Figure 3 This is a side structural schematic diagram of an embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the side structure of a magnetic screening frame according to an embodiment of the present application.

[0023] In the figure: 1. screening box; 2. limit rod; 3. spring; 4. support plate; 5. mounting slot; 6. electric telescopic rod; 7. mounting plate; 8. roller; 9. feed hopper; 10. screen one; 11. guide plate one; 12. screen two; 13. guide plate two; 14. screen three; 15. discharge port one; 16. magnetic material screening frame; 17. discharge port two; 18. discharge port three; 19. motor; 20. magnetic separation roller; 21. scraper; 22. vibration motor. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0028] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] See also Figure 1-4 As shown, a multi-stage screening machine comprises a screening box 1, a vibration motor 22 is fixed at the bottom of the screening box 1, support plates 4 are fixed to the front and rear side walls of the screening box 1 through multiple groups of limit rods 2 and springs 3, the bottom ends of the support plates 4 are provided with electric telescopic rods 6 and rollers 8 with moving functions, the screening box 1 is provided with screen 10, screen 2 12 and screen 3 14 with screening functions, the side walls of the screening box 1 corresponding to the bottom ends of the screen 10, screen 2 12 and screen 3 14 and the bottom end of the left side wall of the screening box 1 are provided with a discharge port 15, and the bottom of the discharge port 15 is provided with a motor 19 and a magnetic separation roller 20 with magnetic screening function.

[0031] A plurality of groups of limit rods 2 and springs 3 are correspondingly fixed on the two side walls of the screening box 1 . The springs 3 are sleeved on the outside of the limit rods 2 . The other ends of the limit rods 2 and the springs 3 are fixed on the inner wall of the support plate 4 .

[0032] The bottom end of the support plate 4 is provided with mounting grooves 5 on both sides, an electric telescopic rod 6 is fixed at the top of the mounting groove 5 , and a roller 8 is fixed at the bottom of the electric telescopic rod 6 through a mounting plate 7 .

[0033] A feed hopper 9 is provided on the top of the screening box 1, a screen 10 is fixed at the top inside the screening box 1, the screen 10 is inclined, a material guide plate 11 is fixed on the inner side wall of the screening box 1 at the bottom of the high end of the screen 10, and the material guide plate 11 and the screen 10 are parallel to each other.

[0034] A second screen 12 is fixed in the screening box 1 below the guide plate 11, and the screen 12 is tilted. A second guide plate 13 is fixed on the inner side wall of the screening box 1 at the bottom of the high end of the screen 12, and the guide plate 13 and the screen 12 are parallel to each other.

[0035] A screen mesh 3 14 is fixed in the screening box 1 below the guide plate 2 13 . The screen mesh 3 14 is tilted, and the bottom of the screening box 1 is tilted.

[0036] A magnetic material screening frame 16 is fixed on the side wall of the screening box 1 at the bottom of the discharge port 15, and a discharge port 2 17 is arranged at the bottom of the outer side wall of the magnetic material screening frame 16.

[0037] The inner end of the bottom of the magnetic material screening frame 16 is provided with a discharge port 3 18 .

[0038] A motor 19 is fixed on the front side wall of the magnetic material screening frame 16, and a magnetic separation roller 20 is fixed on the output end of the motor 19 through the side wall of the magnetic material screening frame 16. The other end of the magnetic separation roller 20 is rotatably connected to the inner wall of the other side of the magnetic material screening frame 16.

[0039] A scraper 21 is disposed at the bottom of the magnetic separation roller 20 , and both ends of the scraper 21 are fixed to the inner walls of both sides of the magnetic material screening frame 16 .

[0040] When the present application is in use, the electrical components appearing in the present application are all externally connected to a power supply and a control switch. First, the vibration motor 2219 is started, and the vibration motor 2219 drives the sub-screening box 1 to vibrate, and then the steel slag to be screened is poured from the feed hopper 9, and the steel slag is screened through the screen 10, the screen 2 12 and the screen 3 14 in turn, and the steel slag that has not been screened through the screen 10, the screen 2 12 and the screen 3 14 is discharged from the discharge port 15 along the screen 10, the screen 2 12 and the screen 3 14, and the last screened steel slag is discharged from the discharge port 15 at the bottom of the sub-screening box 1, and the screen 10, the screen 2 12 and the screen 3 14 are installed tilted, and the bottom of the sub-screening box 1 is tilted, so that the screened steel slag will not accumulate on the screen 10, the screen 2 12, the screen 3 14 and the bottom of the sub-screening box 1, so that there is no need to clean it, thereby improving work efficiency. The screened steel slag is discharged from the discharge port 15 respectively. When discharged from the discharge port 15, it first falls on the magnetic separation roller 20, and the magnetic separation roller 20 will adsorb the magnetic material in the slag on the magnetic separation roller 20. As the motor 19 drives the magnetic separation roller 20 to rotate, the scraper 21 at the bottom of the magnetic separation roller 20 will scrape the material adsorbed on the magnetic separation roller 20 and discharge it through the discharge port 3 18. The material that is not adsorbed is discharged from the discharge port 2 17. The magnetic material contained in the slag of each level of screening can be screened, so that the screening is more thorough and the screening effect is improved. A plurality of groups of electric telescopic rods 6 and rollers 8 with moving functions are arranged at the bottom of the support plate 4. When it is necessary to move the sub-screening machine, the electric telescopic rod 6 is started, and the electric telescopic rod 6 can be controlled synchronously. The roller 8 is driven downward by the electric telescopic rod 6 to make the roller 8 contact with the ground. The sub-screening machine can be moved by pushing or pulling the sub-screening machine. There is no need to install the sub-screening machine on other transportation equipment for movement, and the operation is convenient.

[0041] The benefits of this application are:

[0042] 1. By providing a magnetic material screening frame 16 at the bottom of the discharge pipe, and installing a magnetic separation roller 20 in the magnetic material screening frame 16, the screened steel slag will first fall on the magnetic separation roller 20 when discharged from the discharge port 15, and the magnetic separation roller 20 will adsorb the magnetic material in the steel slag on the magnetic separation roller 20. As the motor 19 drives the magnetic separation roller 20 to rotate, the scraper 21 at the bottom of the magnetic separation roller 20 will scrape the material adsorbed on the magnetic separation roller 20 and discharge it through the discharge port 3 18, and the material that is not adsorbed is discharged from the discharge port 2 17, so that the magnetic material contained in the steel slag of each level of screening can be screened, so that the screening is more thorough and the screening effect is improved.

[0043] 2. By installing the screen 10, screen 2, 12 and screen 3, 14 at an angle, and setting the bottom of the sub-screening box 1 at an angle, the screened slag can be discharged from the discharge port 15 along the screen 10, screen 2, 12, screen 3, 14 and the bottom of the sub-screening box 1, and will not accumulate on the bottom of the screen 10, screen 2, 12, screen 3, 14 and the sub-screening box 1, so there is no need to clean it, thereby improving work efficiency.

[0044] 3. Multiple sets of electric telescopic rods 6 and rollers 8 with moving functions are arranged at the bottom of the support plate 4. When the sub-screening machine needs to be moved, the electric telescopic rods 6 drive the rollers 8 to move downward so that the rollers 8 contact the ground. The sub-screening machine can be moved by pushing or pulling the sub-screening machine. The sub-screening machine does not need to be mounted on other transport equipment for movement, and the operation is convenient.

[0045] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-stage screening machine, comprising a screening box (1), a feed hopper (9), a screen mesh 1 (10), a screen mesh 2 (12) and a screen mesh 3 (14), characterized in that: A vibration motor (22) is fixed at the bottom of the screening box (1); a support plate (4) is fixed to the front and rear side walls of the screening box (1) via a plurality of limit rods (2) and springs (3); an electric telescopic rod (6) and a roller (8) with a moving function are arranged at the bottom of the support plate (4); a screen mesh 1 (10), a screen mesh 2 (12) and a screen mesh 3 (14) with a screening function are arranged in the screening box (1); a discharge port 1 (15) is arranged at the side wall of the screening box (1) corresponding to the bottom of the screen mesh 1 (10), the screen mesh 2 (12) and the screen mesh 3 (14) and at the bottom of the left side wall of the screening box (1); a motor (19) with a magnetic screening function and a magnetic separation roller (20) are arranged at the bottom of the discharge port 1 (15).

2. The multi-stage screening machine according to claim 1, characterized in that: A plurality of sets of limit rods (2) and springs (3) are correspondingly fixed on the two side walls of the screening box (1); the springs (3) are sleeved on the outside of the limit rods (2); and the other ends of the limit rods (2) and the springs (3) are fixed on the inner side wall of the support plate (4).

3. The multi-stage screening machine according to claim 1, characterized in that: The bottom end of the support plate (4) is provided with mounting grooves (5) on both sides, an electric telescopic rod (6) is fixed at the top of the mounting groove (5), and a roller (8) is fixed at the bottom of the electric telescopic rod (6) via a mounting plate (7).

4. The multi-stage screening machine according to claim 1, characterized in that: A feed hopper (9) is arranged at the top of the screening box (1), a screen (10) is fixed at the top of the screening box (1), the screen (10) is arranged obliquely, a material guide plate (11) is fixed on the inner side wall of the screening box (1) at the bottom of the high end of the screen (10), and the material guide plate (11) and the screen (10) are parallel to each other.

5. The multi-stage screening machine according to claim 4, characterized in that: A second screen (12) is fixed in the screening box (1) below the first guide plate (11), and the second screen (12) is arranged at an angle. A second guide plate (13) is fixed on the inner side wall of the screening box (1) at the bottom of the high end of the second screen (12), and the second guide plate (13) and the second screen (12) are parallel to each other.

6. The multi-stage screening machine according to claim 5, characterized in that: A screen mesh three (14) is fixed in the screening box (1) below the second material guide plate (13); the screen mesh three (14) is arranged at an angle, and the bottom of the screening box (1) is arranged at an angle.

7. The multi-stage screening machine according to claim 1, characterized in that: A magnetic material screening frame (16) is fixed on the side wall of the screening box (1) at the bottom of the first discharge port (15), and a second discharge port (17) is arranged at the bottom of the outer side wall of the magnetic material screening frame (16).

8. The multi-stage screening machine according to claim 7, characterized in that: The inner end of the bottom of the magnetic material screening frame (16) is provided with a discharge port three (18).

9. The multi-stage screening machine according to claim 7, characterized in that: A motor (19) is fixed on the front side wall of the magnetic material screening frame (16); an output end of the motor (19) passes through the side wall of the magnetic material screening frame (16) and a magnetic separation roller (20) is fixed thereto; the other end of the magnetic separation roller (20) is rotatably connected to the inner wall of the other side of the magnetic material screening frame (16).

10. The multi-stage screening machine according to claim 9, characterized in that: A scraper (21) is provided at the bottom of the magnetic separation roller (20), and the two ends of the scraper (21) are fixed to the inner walls on both sides of the magnetic material screening frame (16).

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