A screening scraper for coal mine processing

Abstract

The utility model discloses a kind of screening scraper for coal mine processing, belong to coal mine mechanical equipment technical field, including: scraper, the low end outside fixed connection of scraper has support, the top fixed connection of support has screening box;Two slide rails, two The inside two sides of screening box are fixedly connected respectively, the inside sliding connection of two The screening plate of slide rail is arranged equidistantly in screening plate Multiple screening holes are opened;Multiple adjusting plate, multiple The inside of screening plate is inserted respectively, the adjusting plate is still fixedly connected with screening plate by connecting mechanism;The utility model is extracted from the jack plug by bolt, the corresponding position of different bolt and jack plug is adjusted, so that adjusting plate position is adjusted, and then make the position change due to the adjustment of screening hole by adjusting plate, and make adjustment to raw coal screening diameter, improve versatility.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machinery and equipment technology, specifically a screening scraper machine for coal mining. Background Technology

[0002] The scraper conveyor is a core piece of equipment integrating raw coal screening and conveying functions. Through the coordinated operation of the scraper conveying section (including the shell, sprockets, chains, scrapers, etc.) and the screening section, it achieves efficient feeding and screening operations, causing the raw coal to separate on the screen. Smaller pieces of raw coal fall onto the feeding plate and are conveyed by the scraper, while larger pieces are intercepted, thus avoiding the impact of large pieces of material on conveying efficiency and reducing cleaning trouble. This equipment can be divided into four types according to the scraper chain form: single chain, double chain, double chain, and quasi-double chain. According to the application location, it can be divided into underground and above-ground models. The selection should be based on the actual production needs of the coal mine. It is an important piece of equipment for improving coal processing efficiency and raw coal quality.

[0003] Existing screening scraper machines are usually designed with an inclined slope, which uses the rolling of raw coal on the screen bars for screening. The raw coal is prone to stopping, which is not conducive to screening. In addition, the distance between the screen holes between the screen bars is fixed and cannot be adjusted, resulting in low versatility. Therefore, a screening scraper machine for coal mining is proposed. Summary of the Invention

[0004] The purpose of this utility model is to provide a screening scraper machine for coal mining to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screening scraper for coal mining, comprising: a scraper, a support fixedly connected to the lower end of the scraper, and a screening box fixedly connected to the top of the support; two slide rails, each fixedly connected to the inner sides of the screening box, with a screening plate slidably connected inside the two slide rails, and multiple screening holes equidistantly arranged inside the screening plate; multiple adjusting plates, each inserted into the inside of the screening plate, and the adjusting plates also fixedly connected to the screening plate via a connecting mechanism; and a driving mechanism installed outside the screening box for moving the screening plate.

[0006] As a further preferred embodiment of this technical solution: the connecting mechanism includes multiple insertion holes, all of which are located on the outside of the adjusting plate, and a bolt is threaded onto the screening plate, with one end of the bolt inserted into the bolt's interior.

[0007] As a further preferred embodiment of this technical solution: the driving mechanism includes a mounting plate, which is fixedly connected to the outside of the screening box. A motor is mounted on the outside of the mounting plate. The output shaft end of the motor passes through the mounting plate and is fixedly connected to a circular plate. A connecting rod is fixedly connected to the outside of the screening plate. The connecting rod is slidably connected to the screening box. A hinge rod is hinged to the outside of the circular plate. A hinge joint is fixedly connected to the outside of the connecting rod. The hinge joint is hinged to the hinge rod.

[0008] As a further preferred embodiment of this technical solution: the external of the screening box is connected to a discharge cylinder, and the internal of the screening box is fixedly connected to a receiving plate, which is located below the connection port between the screening box and the discharge cylinder.

[0009] As a further preferred embodiment of this technical solution: the bottom of the screening box is connected to a feed pipe, and the feed pipe is located above the scraper conveyor.

[0010] As a further preferred embodiment of this technical solution: the adjusting plate is located inside the screening hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model adjusts the position of the adjusting plate by pulling the bolt out of the insertion hole and adjusting the corresponding position of the bolt and the insertion hole. This adjusts the position of the adjusting plate, thereby changing the screening diameter of the raw coal due to the change in the position of the adjusting plate, thus improving its versatility.

[0013] 2. This utility model utilizes a drive mechanism to move the connecting rod, which drives the screening plate to move back and forth in the slide rail, avoiding the stagnation of raw coal, improving screening efficiency, so that raw coal smaller than the diameter of the screening hole is screened out and falls onto the scraper conveyor through the feeding pipe and is transported, while larger raw coal falls onto the receiving plate after moving and is screened out through the discharge cylinder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a screening scraper machine for coal mining according to the present invention;

[0015] Figure 2 This is a schematic diagram of the feeding pipe in a screening scraper machine for coal mining according to the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the screening plate in a screening scraper machine for coal mining according to the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of the adjusting plate in a screening scraper machine for coal mining according to the present invention.

[0018] In the diagram: 1. Scraper conveyor; 2. Support frame; 3. Screening box; 4. Discharge cylinder; 5. Receiving plate; 6. Slide rail; 7. Screening plate; 8. Screening hole; 9. Adjusting plate; 10. Bolt; 11. Mounting plate; 12. Motor; 13. Connecting rod; 15. Circular plate; 16. Hinge rod; 17. Hinge joint; 18. Insertion hole; 19. Discharge pipe. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Example

[0021] Please see Figures 1-4 This utility model provides a technical solution: a screening scraper for coal mining, comprising: a scraper 1, a screening box 3, two slide rails 6, multiple adjusting plates 9, a connecting mechanism and a driving mechanism;

[0022] The scraper conveyor 1 is externally fixedly connected to a support 2 at its lower end, and the screening box 3 is fixedly connected to the top of the support 2. Two slide rails 6 are fixedly connected to the inner sides of the screening box 3 respectively, and screening plates 7 are slidably connected inside the two slide rails 6. Multiple screening holes 8 are equidistantly arranged inside the screening plate 7. Multiple adjusting plates 9 are inserted into the inside of the screening plate 7 respectively, and the adjusting plates 9 are fixedly connected to the screening plate 7 through a connecting mechanism. The drive mechanism is installed on the outside of the screening box 3 and is used to move the screening plate 7.

[0023] In this embodiment, specifically: the external of the screening box 3 is connected to the discharge cylinder 4, the internal of the screening box 3 is fixedly connected to the receiving plate 5, the receiving plate 5 is located below the connection port between the screening box 3 and the discharge cylinder 4, the bottom of the screening box 3 is connected to the discharge pipe 19, and the discharge pipe 19 is located above the scraper conveyor 1.

[0024] In this embodiment, specifically: the connecting mechanism includes multiple insertion holes 18, all of which are opened on the outside of the adjusting plate 9. A bolt 10 is threadedly connected to the screening plate 7, and one end of the bolt 10 is inserted into the inside of the bolt 10. The adjusting plate 9 is located inside the screening hole 8.

[0025] In this embodiment, specifically: the adjusting plate 9 is built into the screening hole 8 of the screening plate 7. The bolt 10 on the screening plate 7 is loosened, and the bolt 10 is pulled out from the insertion hole 18 of the adjusting plate 9, thus releasing the fixing of the adjusting plate 9. The adjusting plate 9 is moved to the target position, so that the area of ​​the screening hole 8 covered by the adjusting plate 9 changes, thereby adjusting the effective screening diameter of the screening hole 8. The bolt 10 is tightened again, so that the bolt 10 is inserted into the corresponding insertion hole 18, fixing the adjusting plate 9, and completing the adjustment of the effective screening diameter.

[0026] In this embodiment, specifically: the driving mechanism includes a mounting plate 11, which is fixedly connected to the outside of the screening box 3. A motor 12 is mounted on the outside of the mounting plate 11. The output shaft end of the motor 12 passes through the mounting plate 11 and is fixedly connected to a circular plate 15. A connecting rod 13 is fixedly connected to the outside of the screening plate 7. The connecting rod 13 is slidably connected to the screening box 3. A hinge rod 16 is hinged to the outside of the circular plate 15. A hinge joint 17 is fixedly connected to the outside of the connecting rod 13. The hinge joint 17 is hinged to the hinge rod 16.

[0027] In this embodiment, specifically: the output shaft of motor 12 drives the circular plate 15 to rotate. When the circular plate 15 rotates, the hinge rod 16, which is hinged to the outside of the circular plate 15, moves in a circular motion with the circular plate 15, thereby pulling the hinge joint 17, which is hinged to the other end of the hinge rod 16. The hinge joint 17 is fixed on the connecting rod 13. The connecting rod 13 is connected to the screening plate 7 and can slide along the screening box 3. Therefore, the movement of the hinge joint 17 will drive the connecting rod 13 and the screening plate 7 to move synchronously. Relying on the slide rails 6 on both sides inside the screening box 3, the screening plate 7 moves in a reciprocating linear motion within the slide rails 6 to achieve dynamic screening.

[0028] In this embodiment, specifically: raw coal with a particle size smaller than the effective diameter of the screening hole 8 falls through the screening hole 8 and into the scraper conveyor 1 below via the feed pipe 19 at the bottom of the screening box 3; raw coal with a particle size larger than the effective diameter of the screening hole 8 is pushed to one side of the screening box 3 by the reciprocating motion of the screening plate 7 and finally falls onto the receiving plate 5 inside the screening box 3.

[0029] Working principle: When in use, the adjusting plate 9 is built into the screening hole 8 of the screening plate 7. Loosen the bolt 10 on the screening plate 7, and the bolt 10 is pulled out from the insertion hole 18 of the adjusting plate 9 to release the fixation of the adjusting plate 9. Move the adjusting plate 9 to the target position to change the area of ​​the screening hole 8 covered by the adjusting plate 9, thereby adjusting the effective screening diameter of the screening hole 8. Tighten the bolt 10 again so that the bolt 10 is inserted into the corresponding insertion hole 18 to fix the adjusting plate 9 and complete the adjustment of the effective screening diameter.

[0030] The output shaft of motor 12 drives the circular plate 15 to rotate. When the circular plate 15 rotates, the hinge rod 16, which is hinged to the outside of the circular plate 15, moves in a circular motion with the circular plate 15, thereby pulling the hinge joint 17, which is hinged to the other end of the hinge rod 16. The hinge joint 17 is fixed on the connecting rod 13. The connecting rod 13 is connected to the screening plate 7 and can slide along the screening box 3. Therefore, the movement of the hinge joint 17 will drive the connecting rod 13 and the screening plate 7 to move synchronously. Relying on the slide rails 6 on both sides inside the screening box 3, the screening plate 7 moves in a reciprocating linear motion within the slide rails 6 to achieve dynamic screening.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening scraper for coal mining, characterized in that, include: A scraper conveyor (1) has a support (2) fixedly connected to its lower end, and a screening box (3) fixedly connected to its top. Two slide rails (6) are fixedly connected to the inside sides of the screening box (3), and a screening plate (7) is slidably connected inside the two slide rails (6). Multiple screening holes (8) are equidistantly arranged inside the screening plate (7). Multiple adjusting plates (9) are respectively inserted into the interior of the screening plate (7), and the adjusting plates (9) are also fixedly connected to the screening plate (7) through a connecting mechanism; A drive mechanism, which is installed outside the screening box (3), is used to move the screening plate (7).

2. The screening scraper machine for coal mining according to claim 1, characterized in that: The connecting mechanism includes multiple insertion holes (18), all of which are located on the outside of the adjusting plate (9). A bolt (10) is threaded onto the screening plate (7), and one end of the bolt (10) is inserted into the bolt (10).

3. A screening scraper for coal mining as described in claim 1, characterized in that: The driving mechanism includes a mounting plate (11), which is fixedly connected to the outside of the screening box (3). A motor (12) is mounted on the outside of the mounting plate (11). The output shaft end of the motor (12) passes through the mounting plate (11) and is fixedly connected to a circular plate (15). A connecting rod (13) is fixedly connected to the outside of the screening plate (7). The connecting rod (13) is slidably connected to the screening box (3). A hinge rod (16) is hinged to the outside of the circular plate (15). A hinge joint (17) is fixedly connected to the outside of the connecting rod (13). The hinge joint (17) is hinged to the hinge rod (16).

4. A screening scraper for coal mining as described in claim 1, characterized in that: The screening box (3) is connected to the outside of the discharge cylinder (4), and the screening box (3) is fixedly connected to the inside of the receiving plate (5). The receiving plate (5) is located below the connection port between the screening box (3) and the discharge cylinder (4).

5. A screening scraper for coal mining as described in claim 1, characterized in that: The bottom of the screening box (3) is connected to a feed pipe (19), which is located above the scraper conveyor (1).

6. A screening scraper for coal mining as described in claim 1, characterized in that: The adjusting plate (9) is located inside the sieve hole (8).

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