Drum-type magnetic separator for unattended coal dressing

Abstract

The utility model relates to the field of drum-type magnetic separators, in particular to an unattended drum-type magnetic separator for coal dressing, which comprises a box body and a drum, the drum is rotatably mounted on the right end face in the box body through a bearing, a first motor is mounted on the left end face of the drum, a through hole is formed in the bottom in the box body, and a discharge port is mounted at the bottom of the through hole. An inclined hole is formed in the end face of the front side of the box body; a scraping plate is arranged in the inclined hole; an inclined table is arranged on the end face of the front side of the box body; an electric sliding block is arranged on the upper end face of the inclined table; an electric sliding block structure is adopted, so that the position of the scraping plate is adjusted, and the situation that a coal mine falls on the scraping plate when falling, and magnetic substances are inconvenient to classify, collect and process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of drum magnetic separators, specifically to an unattended drum magnetic separator for coal preparation. Background Technology

[0002] Magnetic separators, common mechanical equipment in coal preparation plants, are mainly used in heavy media coal preparation processes to recover heavy media. The purpose is to recover the large amount of magnetic powder contained in the suspension produced during coal washing, enabling its reuse. In coal washing production, the operation of the magnetic separator is crucial, especially the stability of the liquid level, which directly affects the recovery efficiency and, consequently, the production costs of the coal preparation plant.

[0003] A Chinese patent discloses a coal drum magnetic separator (authorization announcement number CN 209753111 U). This patented technology can solve the problems that often occur in the production of magnetic separators in many domestic coal preparation plants, such as unstable liquid level, fluctuating levels, which affect the recovery efficiency of magnetic materials, increase system dielectric loss, and increase coal washing production costs.

[0004] In this patent, when the scraper collects magnetic materials, the coal tends to fall onto the scraper, resulting in poor separation and requiring manual sorting. Furthermore, the magnetic materials tend to adhere to the scraper and are difficult to slide off, requiring manual pushing to remove them. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an unattended rotary magnetic separator for coal preparation, including a housing and a drum. The drum is rotatably mounted on the right end face of the housing via a bearing, and a first motor is mounted on the left end face of the drum. A through hole is opened at the bottom of the housing, and a discharge port is installed at the bottom of the through hole. A solenoid valve is installed on the outer wall of the discharge port. An inclined hole is installed on the front end face of the housing, and a scraper is arranged in the inclined hole. An inclined platform is installed on the front end face of the housing, and an electric slider is installed on the upper surface of the inclined platform. A connecting plate is installed on the upper surface of the electric slider, and a scraper is installed on the upper surface of the connecting plate. A collection box is arranged diagonally below the scraper.

[0006] Preferably, a triangular truss is symmetrically installed at the bottom of the box, a second lead screw is rotatably installed on the right end face of the box via a bearing, push plates are symmetrically screwed to the outer side wall of the second lead screw, a second motor is installed on the left end face of the second lead screw, and fixing rods are symmetrically installed on the left and right side walls of the box, the fixing rods pass through the push plates and are connected to them by a sliding fit.

[0007] Preferably, a fixing frame is installed on the upper end face of the box, a feed inlet is installed on the upper end face of the fixing frame, and a control panel is installed on the right end face of the box. The control panel is electrically connected to the electric slider.

[0008] Preferably, the upper surface of the inclined platform is symmetrically equipped with side plates, and the upper surface of the connecting plate is equipped with a front plate.

[0009] Preferably, a front frame is installed on the upper end face of the fixed frame, an adjusting cylinder is installed at the bottom of the front frame, a pressure rod is installed at the output end of the adjusting cylinder, a fixing groove is opened at the bottom of the pressure rod, and a spring rod is installed at the top of the fixing groove.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] 1. This utility model adopts an electric slider structure to adjust the position of the scraper, so as to avoid the coal falling onto the scraper when it falls, which would make it inconvenient to classify and collect magnetic materials.

[0012] 2. This utility model adopts a pressure rod structure to slightly tap the surface of the scraper, preventing magnetic objects from getting stuck on the scraper and ensuring the speed at which the magnetic objects slide downwards, without the need for manual observation and pushing. Attached Figure Description

[0013] Figure 1 This is a front view of the structure of an unattended coal preparation drum magnetic separator provided in an embodiment of this application;

[0014] Figure 2 This is a right view of the structure of an unattended drum magnetic separator for coal preparation provided in an embodiment of this application;

[0015] Figure 3 This is a cross-sectional front view of an unattended drum magnetic separator for coal preparation provided in an embodiment of this application;

[0016] Figure 4 This is a cross-sectional left view of an unattended drum magnetic separator for coal preparation provided in an embodiment of this application;

[0017] Figure 5 This is a cross-sectional top view of an unattended drum magnetic separator for coal preparation provided in an embodiment of this application;

[0018] In the diagram: 1. Box body; 2. Roller; 11. First motor; 12. Discharge port; 13. Scraper; 14. Electric slider; 15. Collection box; 16. Second lead screw; 17. Push plate; 18. Second motor; 19. Fixing rod; 21. Feed port; 22. Control panel; 23. Side plate; 24. Adjusting cylinder; 25. Pressure rod; 26. Spring rod. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] Please see Figures 1-5 This embodiment provides an unattended drum magnetic separator for coal preparation, including a housing 1 and a drum 2. The drum 2 is rotatably mounted on the right end face of the housing 1 via a bearing, and a first motor 11 is mounted on the left end face of the drum 2. A through hole is opened at the bottom of the housing 1, and a discharge port 12 is installed at the bottom of the through hole. A solenoid valve is installed on the outer wall of the discharge port 12. An inclined hole is installed on the front end face of the housing 1, and a scraper 13 is arranged in the inclined hole. An inclined platform is installed on the front end face of the housing 1, and an electric slider 14 is installed on the upper surface of the inclined platform. A connecting plate is installed on the upper surface of the electric slider 14, and a scraper 13 is installed on the upper surface of the connecting plate. A collection box 15 is arranged diagonally below the scraper 13. During operation, the electric slider 14 is a linear guide slider structure. The device moves linearly by rotating a lead screw driven by a motor. An electromagnet is arranged inside the drum 2. Coal falls from above the drum 2, and the drum 2 adsorbs magnetic materials in the coal. The electric slider 14 is activated, which drives the scraper 13 to move diagonally downward, thus preventing the coal from falling onto the scraper 13 and making it difficult to classify and collect the magnetic materials. The solenoid valve is opened, and the coal is discharged through the discharge port 12. Then the electric slider 14 is activated, which drives the scraper 13 to move diagonally downward and stick to the outer wall of the drum 2. The first motor 11 is activated, which drives the drum 2 to rotate. The scraper 13 scrapes the drum 2, causing the magnetic materials to fall onto the scraper 13 and slide off. The magnetic materials then fall into the collection box 15.

[0021] A triangular platform is symmetrically installed at the bottom of the box 1. A second lead screw 16 is rotatably installed on the right end face of the box 1 via a bearing. Push plates 17 are symmetrically screwed to the outer side wall of the second lead screw 16. A second motor 18 is installed on the left end face of the second lead screw 16. Fixing rods 19 are symmetrically installed on the left and right side walls of the box 1. The fixing rods 19 pass through the push plates 17 and are connected to them by a sliding fit. The threads of the second lead screw 16 are symmetrically opposite in direction. During operation, the second motor 18 starts, driving the second lead screw 16 to rotate, causing the push plates 17 to move inward, thereby pushing the coal at the bottom of the box 1 into the discharge port 12, ensuring the removal of coal in the box 1 without the need for manual cleaning.

[0022] A fixed frame is installed on the upper end face of the box 1, and a feed inlet 21 is installed on the upper end face of the fixed frame. A control panel 22 is installed on the right end face of the box 1. The control panel 22 is electrically connected to the electric slider 14. During operation, a PLC program is written in the control panel 22 to control the operation of each device and pour coal into the box through the feed inlet 21.

[0023] Side plates 23 are symmetrically installed on the upper surface of the inclined platform, and a front plate is installed on the upper surface of the connecting plate. During operation, the side plates 23 limit the left and right side walls of the collection box 15, and the front plate collects materials diagonally below the collection box 15.

[0024] A front frame is installed on the upper end of the fixed frame, and an adjusting cylinder 24 is installed at the bottom of the front frame. A pressure rod 25 is installed at the output end of the adjusting cylinder 24. A fixing groove is opened at the bottom of the pressure rod 25, and a spring rod 26 is installed at the top of the fixing groove. When working, the adjusting cylinder 24 is activated, which drives the pressure plate to move up and down, thereby performing a slight tapping treatment on the surface of the scraper 13 to prevent magnetic objects from getting stuck on the scraper 13 and to ensure the downward sliding speed of the magnetic objects. No manual observation and pushing are required. The spring rod 26 further ensures the tapping effect on the scraper 13.

[0025] In actual operation, the electric slider 14 is a linear guide slider structure. The motor drives the lead screw to rotate, thereby controlling the linear movement of the device. An electromagnet is arranged inside the drum 2. Coal falls from above the drum 2. The drum 2 adsorbs magnetic materials in the coal. The electric slider 14 is started, driving the scraper 13 to move obliquely downward, thus preventing the coal from falling onto the scraper 13, which would make it difficult to classify and collect magnetic materials. The solenoid valve is opened, and the coal is discharged through the discharge port 12. Then the electric slider 14 is started, driving the scraper 13 to move obliquely downward and stick to the outer wall of the drum 2. The first motor 11 is started, driving the drum 2 to rotate. The scraper 13 scrapes the drum 2, causing the magnetic materials to fall onto the scraper 13 and slide off. The magnetic materials then fall into the collection box 15.

[0026] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An unattended drum-type magnetic separator for coal preparation, comprising a housing (1) and a drum (2), characterized in that, A roller (2) is mounted on the right end face of the box (1) via a bearing. A first motor (11) is mounted on the left end face of the roller (2). A through hole is opened at the bottom of the box (1). A discharge port (12) is installed at the bottom of the through hole. A solenoid valve is installed on the outer wall of the discharge port (12). An inclined hole is installed on the front end face of the box (1). A scraper (13) is arranged in the inclined hole. An inclined platform is installed on the front end face of the box (1). An electric slider (14) is installed on the upper surface of the inclined platform. A connecting plate is installed on the upper surface of the electric slider (14). A scraper (13) is installed on the upper surface of the connecting plate. A collection box (15) is arranged diagonally below the scraper (13).

2. The unattended drum magnetic separator for coal preparation according to claim 1, characterized in that... The bottom of the box (1) is symmetrically equipped with a triangular platform. The right end face of the box (1) is rotatably installed with a second lead screw (16) through a bearing. The outer side wall of the second lead screw (16) is symmetrically screwed with push plates (17). The left end face of the second lead screw (16) is equipped with a second motor (18).

3. The unattended drum magnetic separator for coal preparation according to claim 1, characterized in that, The box (1) has symmetrically installed fixing rods (19) on the left and right side walls. The fixing rods (19) pass through the push plate (17) and are connected to it by sliding fit.

4. The unattended drum magnetic separator for coal preparation according to claim 1, characterized in that, A fixed frame is installed on the upper end face of the box (1), and a feed port (21) is installed on the upper end face of the fixed frame. A control panel (22) is installed on the right end face of the box (1). The control panel (22) is electrically connected to the electric slider (14).

5. The unattended drum magnetic separator for coal preparation according to claim 1, characterized in that, Side plates (23) are symmetrically installed on the upper surface of the inclined platform, and a front plate is installed on the upper surface of the connecting plate.

6. The unattended drum magnetic separator for coal preparation according to claim 4, characterized in that, The upper end face of the fixed frame is equipped with a front frame, and the bottom of the front frame is equipped with an adjusting cylinder (24). The output end of the adjusting cylinder (24) is equipped with a pressure rod (25).

7. The unattended drum magnetic separator for coal preparation according to claim 6, characterized in that, The bottom of the pressure rod (25) is provided with a fixing groove, and a spring rod (26) is installed at the top of the fixing groove.

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