Coal mine screening machine

Abstract

The utility model discloses a coal mine screening machine, including screening subassembly, screening subassembly includes the shell, the top of shell right -hand member is equipped with the feed inlet, is equipped with the feed channel of communication with the feed inlet in the inside of shell right -hand member, the left side of shell inside is located the rotation connection of feed channel with screening cylinder. This coal mine screening machine, through setting up the rotatable screening cylinder of shell inside, cooperation feed inlet, the continuous feeding structure of feed channel, can make raw coal after entering screening cylinder get fully screening. The up and down corresponding design of screening cylinder and lower storage cavity makes the coal that meets the requirement can directly fall into the storage cavity, reduces the retention of material in the screening area, and the feeding member in the storage cavity can timely send out the screened coal from the discharge port no. 2, and the material not screened is conveyed to the discharge port no. 1 through the screening cylinder and discharged, forming a complete and efficient screening process, effectively solve the problem of low efficiency of traditional screening mode.

Description

Technical Field

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

[0002] In the field of coal mining technology, raw coal is often mixed with coal, gangue and other impurities of different particle sizes after mining. In order to meet the requirements of subsequent washing, processing, transportation and use, raw coal must be screened. Efficient screening operations can not only improve the utilization rate of coal resources, but also reduce the energy consumption and cost of subsequent processing. Therefore, screening equipment occupies a vital position in the coal mine production process.

[0003] In the prior art, CN219464068U discloses a coal mine screening machine, which includes a main body of the device. A feeding device is fixedly connected to the upper side of the main body of the device. A movable plate is movably connected to the upper side of the feeding device. A handle is fixedly connected to the upper side of the movable plate. A fixed plate is fixedly connected to the inner side of the feeding device. A reset mechanism is provided on the upper side of the fixed plate. The reset mechanism includes a limit telescopic rod and a spring. The screening mechanism includes a fixed rod, a motor, and a fan. A partition is fixedly connected to the inner side of the main body of the device. A screening groove is opened on one side of the partition. The screening efficiency through the fan and partition is low, and the use is inconvenient. Therefore, further optimization is proposed to address the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a coal mine screening machine, which solves the problems mentioned in the background technology above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine screening machine, comprising, A screening assembly includes an outer shell, a feed inlet at the top right end of the outer shell, a feed channel communicating with the feed inlet inside the right end of the outer shell, a screening cylinder rotatably connected to the left side of the feed channel inside the outer shell, a storage chamber below the screening cylinder inside the outer shell, a feeding component inside the storage chamber, a discharge port one communicating with the screening cylinder on the left side of the outer shell, and a discharge port two communicating with the storage chamber on the lower surface of the left end of the outer shell. The support assembly includes a bracket disposed on the outer wall of the outer shell, a support plate disposed on the side of the right end of the outer shell, a driving block disposed on the upper surface of the support plate, and a transmission assembly disposed inside the right end of the outer shell for driving the screening cylinder and the feeding component to rotate.

[0006] Preferably, the transmission assembly includes a rotating rod located at the output end of the drive block, the other end of the rotating rod extending to the feed channel and having a crushing wheel, and a gear rod located below the rotating rod inside the outer casing, the left end of the gear rod meshing with the outer wall of the right end of the screening cylinder.

[0007] Preferably, a conveyor belt is wound around the outer wall of the right end of the rotating rod, and the other end of the conveyor belt is wound around the outer wall of the right end of the gear rod. A rotating shaft is provided below the gear rod, and the left end of the rotating shaft extends into the interior of the storage cavity and is fixedly connected to the right end of the feeding component. The outer wall of the gear rod is wound with a second conveyor belt near the first conveyor belt, and the other end of the second conveyor belt is wound around the surface of the rotating shaft.

[0008] Preferably, the screening cylinder includes an inclined plate on the inner wall for conveying coal, a reinforcing strip on the outer wall of the screening cylinder, and a screen for screening coal.

[0009] Preferably, a protective shell is fixedly connected to the upper surface of the outer shell, and a cleaning rod is inserted into the upper surface of the protective shell. The bottom end of the cleaning rod extends into the interior of the outer shell and is used in conjunction with the screening cylinder.

[0010] Preferably, the cleaning rod includes a vertical rod inserted into the upper surface of the protective shell, a wedge block is fixedly connected to the bottom end of the vertical rod, a spring is sleeved on the outer wall of the vertical rod, and a retaining ring for limiting the spring is fixedly connected to the outer wall at the bottom of the vertical rod.

[0011] This utility model has the following beneficial effects: This coal screening machine features a rotatable screening cylinder inside its outer casing, coupled with a continuous feeding structure via the inlet and feeding channel, allowing raw coal to be fully screened upon entering the screening cylinder. The vertical alignment between the screening cylinder and the lower storage chamber ensures that qualified coal falls directly into the storage chamber, reducing material retention in the screening area. The feeding components within the storage chamber promptly deliver the screened coal from outlet two, while unscreened material is conveyed through the screening cylinder to outlet one for discharge, forming a complete and efficient screening process that effectively solves the problem of low efficiency in traditional screening methods. This coal mine screening machine features a transmission component design that enables the coordinated operation of the crushing wheel, screening cylinder, and feeding component. The crushing wheel can initially crush large pieces of coal or gangue entering the feed channel, preventing large materials from clogging the screening cylinder and improving the equipment's adaptability to raw coal of different particle sizes. The feeding component can promptly deliver coal from the storage chamber through the discharge port, preventing accumulation in the storage chamber and ensuring the continuity of screening operations. This integrated transmission design allows the equipment to perform crushing and conveying functions simultaneously while screening, improving overall operational efficiency. This coal mine screening machine, when the screening cylinder rotates and the reinforcing bar moves to the wedge block, the vertical rod, with the help of the spring, drives the wedge block to rise. When the reinforcing bar disengages from the wedge block, with the help of the spring, the vertical rod drives the wedge block to descend rapidly, hitting the screen and thus cleaning the screen and reducing clogging. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the disassembly structure of the bracket of this utility model; Figure 3 This is a schematic diagram of the screening cylinder structure of this utility model; Figure 4 This is a schematic cross-sectional view of the outer shell of this utility model; Figure 5 This is a schematic diagram of the crushing wheel structure of this utility model; Figure 6 This is a schematic diagram of the cleaning rod structure of this utility model; Figure 7 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0013] The components are as follows: 1. Outer shell; 2. Feed inlet; 3. Feeding channel; 4. Screening cylinder; 401. Inclined plate; 402. Reinforcing strip; 403. Screen; 5. Storage chamber; 6. Feeding component; 7. Outlet 1; 8. Outlet 2; 9. Support; 10. Support plate; 11. Drive block; 12. Rotating rod; 13. Crushing wheel; 14. Gear rod; 15. Conveyor belt 1; 16. Rotating shaft; 17. Conveyor belt 2; 18. Protective shell; 19. Cleaning rod; 1901. Vertical rod; 1902. Wedge block; 1903. Spring; 1904. Retaining ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1 to 7This utility model provides a coal mine screening machine; including a screening component, the screening component includes an outer shell 1, a feed inlet 2 is provided at the top of the right end of the outer shell 1, a feed channel 3 communicating with the feed inlet 2 is provided inside the right end of the outer shell 1, a screening cylinder 4 is rotatably connected to the left side of the feed channel 3 inside the outer shell 1, a storage chamber 5 is provided below the screening cylinder 4 inside the outer shell 1, a feeding component 6 is provided inside the storage chamber 5, a discharge port 7 communicating with the screening cylinder 4 is opened on the left side of the outer shell 1, and a discharge port 8 communicating with the storage chamber 5 is opened on the lower surface of the left end of the outer shell 1. The support assembly includes a bracket 9 on the outer wall of the outer shell 1, a support plate 10 on the side of the right end of the outer shell 1, a drive block 11 on the upper surface of the support plate 10, and a transmission assembly for driving the screen cylinder 4 and the feeding component 6 to rotate inside the right end of the outer shell 1.

[0016] like Figure 1-2 As shown, casters are fixedly connected to the four corners at the bottom of the bracket 9. The purpose of this design is to facilitate the movement of the equipment and improve the flexibility of its use. Threaded holes are provided on both sides of the outer shell 1. The bracket 9 includes vertical plates on both sides of the outer shell 1. The sides of the vertical plates are threadedly connected to the threaded holes on the outer side wall of the outer shell 1 by bolts. The feed inlet 2 is L-shaped, which reduces the amount of coal dust generated from coal entering the feed channel 3 and allows it to be discharged directly from the outlet.

[0017] The transmission assembly includes a rotating rod 12 located at the output end of the drive block 11. The other end of the rotating rod 12 extends to the feed channel 3 and is provided with a crushing wheel 13. A gear rod 14 is provided below the rotating rod 12 inside the outer casing 1. The left end of the gear rod 14 is meshed with the outer wall of the right end of the screening cylinder 4.

[0018] A conveyor belt 15 is wound around the outer wall of the right end of the rotating rod 12. The other end of the conveyor belt 15 is wound around the outer wall of the right end of the gear rod 14. A rotating shaft 16 is provided below the gear rod 14. The left end of the rotating shaft 16 extends into the interior of the storage cavity 5 and is fixedly connected to the right end of the feeding component 6. A second conveyor belt 17 is wound around the outer wall of the gear rod 14 near the first conveyor belt 15. The other end of the second conveyor belt 17 is wound around the surface of the rotating shaft 16.

[0019] like Figure 3-4 As shown, starting the drive block 11 (powered by a motor) can drive the rotating rod 12 to rotate, and at the same time drive the crushing wheel 13 to rotate. When coal enters the feed channel 3, larger pieces of coal can be crushed, improving the screening effect. When the rotating rod 12 rotates, it can drive the gear rod 14 to rotate with the cooperation of the conveyor belt 15. The outer wall of the right end of the screening cylinder 4 is provided with a toothed layer (shown in the figure, not labeled), and the left end of the gear rod 14 is provided with a gear (shown in the figure, not labeled) and meshes with the toothed layer, so the screening cylinder 4 is driven to rotate synchronously. To facilitate the rapid entry of coal into the screening cylinder, an inclined layer (shown in the figure, not labeled) is provided on the inner side wall of the right end of the outer shell 1, and the inclined end is located inside the right end of the screening cylinder 4. When coal enters the feed channel 3, it can quickly enter the screening cylinder 4 with the help of the inclined layer, reducing the accumulation of coal in the feed channel 3 and improving the screening efficiency. When the gear rod 14 rotates, under the force of the conveyor belt 17, it can drive the rotating shaft 16 to rotate, and synchronously drive the feeding component 6 (which is a screw conveyor rod) to rotate. This can transport the coal after screening by the screening cylinder 4 and discharge it from the discharge port 8. Coal that has not passed the screening by the screening cylinder 4 is discharged from the discharge port 7. This can quickly screen the coal and quickly transport it to the designated location for collection, thus improving the overall screening efficiency.

[0020] The screening cylinder 4 includes an inclined plate 401 on the inner wall for conveying coal, a reinforcing strip 402 on the outer wall of the screening cylinder 4, and a screen 403 for screening coal. A protective shell 18 is fixedly connected to the upper surface of the outer shell 1, and a cleaning rod 19 is inserted into the upper surface of the protective shell 18. The bottom end of the cleaning rod 19 extends into the interior of the outer shell 1 and works in conjunction with the screening cylinder 4.

[0021] The cleaning rod 19 includes a vertical rod 1901 inserted into the upper surface of the protective shell 18. A wedge block 1902 is fixedly connected to the bottom end of the vertical rod 1901. A spring 1903 is sleeved on the outer wall of the vertical rod 1901. A retaining ring 1904 for limiting the spring 1903 is fixedly connected to the outer wall at the bottom of the vertical rod 1901.

[0022] To reduce clogging of the screening cylinder 4, since the screening cylinder 4 can be misaligned through the reinforcing bar 402 and the screen 403, when the screening cylinder 4 rotates and the reinforcing bar 402 rotates to the wedge block 1902, the vertical rod 1901 drives the spring 1903 to compress, and the wedge block 1902 rises. When the wedge block 1902 leaves the area of ​​the reinforcing bar 402, the spring 1903 drives the vertical rod 1901 to descend rapidly, and the wedge block 1902 strikes the screen 403, thereby cleaning its surface and reducing coal clogging. like Figure 7As shown, a screw (not shown in the figure) is threaded to the bottom left side of the protective shell 18. The other end of the screw extends into the interior of the protective shell 18 and is fitted with a T-shaped block (not shown in the figure). Rotating the screw can cause the T-shaped block to abut against the bottom of the retaining ring 1904, causing the wedge block 1902 to rise. At this time, when the screening cylinder 4 rotates, the reinforcing strip 402 will not contact the wedge block 1902, and can be adjusted and used without cleaning the screening cylinder 4.

[0023] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0024] In this invention, the working steps of the device are as follows: When in use, the raw coal to be screened is added through the feed inlet 2. The L-shaped design of the feed inlet 2 can reduce the direct overflow of coal ash. The raw coal is conveyed through the feed channel 3 and smoothly enters the screening cylinder 4 on the left side under the guidance of the inclined layer on the inner side wall of the right end of the outer shell 1. Start the drive block 11, which drives the various components to operate in conjunction with the transmission assembly: the rotating rod 12 rotates and drives the crushing wheel 13 to rotate, which initially crushes large pieces of coal or gangue in the feed channel 3; the rotating rod 12 drives the gear rod 14 to rotate through the first conveyor belt 15, and the gear rod 14 meshes with the toothed layer on the outer wall of the screening cylinder 4, driving the screening cylinder 4 to rotate; the gear rod 14 simultaneously drives the rotating shaft 16 to rotate through the second conveyor belt 17, so that the feeding component 6 in the storage chamber 5 operates synchronously; When the screening cylinder 4 rotates, the inclined plate 401 on the inner wall pushes the raw coal to the left. Coal that meets the particle size requirements falls into the storage chamber 5 below through the screen 403. Large pieces of material that do not pass through the screen 403 continue to be conveyed to the left and are finally discharged from the discharge port 7. The feeding component 6 in the storage chamber 5 pushes the screened coal to the discharge port 8 for discharge, realizing the separation and collection of coal with different particle sizes. After the screening operation is completed, the drive block 11 is turned off.

[0025] 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 coal mine screening machine, characterized in that: include, The screening assembly includes an outer shell (1), a feed inlet (2) is provided at the top right end of the outer shell (1), a feed channel (3) communicating with the feed inlet (2) is provided inside the right end of the outer shell (1), a screening cylinder (4) is rotatably connected to the left side of the feed channel (3) inside the outer shell (1), a storage chamber (5) is provided below the screening cylinder (4) inside the outer shell (1), a feeding component (6) is provided inside the storage chamber (5), a discharge port one (7) communicating with the screening cylinder (4) is opened on the left side of the outer shell (1), and a discharge port two (8) communicating with the storage chamber (5) is opened on the lower surface of the left end of the outer shell (1). The support assembly includes a bracket (9) provided on the outer wall of the outer shell (1), a support plate (10) provided on the side of the right end of the outer shell (1), a drive block (11) provided on the upper surface of the support plate (10), and a transmission assembly for driving the screen cylinder (4) and the feeding component (6) to rotate inside the right end of the outer shell (1).

2. The coal mine screening machine according to claim 1, characterized in that: The transmission assembly includes a rotating rod (12) located at the output end of the drive block (11). The other end of the rotating rod (12) extends to the feed channel (3) and is provided with a crushing wheel (13). A gear rod (14) is provided below the rotating rod (12) inside the outer shell (1). The left end of the gear rod (14) meshes with the outer wall of the right end of the screening cylinder (4).

3. A coal mine screening machine according to claim 2, characterized in that: The outer wall of the right end of the rotating rod (12) is wrapped with a conveyor belt (15), and the other end of the conveyor belt (15) is wrapped with the outer wall of the right end of the gear rod (14). A rotating shaft (16) is provided below the gear rod (14), and the left end of the rotating shaft (16) extends into the interior of the storage cavity (5) and is fixedly connected to the right end of the feeding component (6). The outer wall of the gear rod (14) near the first conveyor belt (15) is wrapped with a second conveyor belt (17), and the other end of the second conveyor belt (17) is wrapped around the surface of the rotating shaft (16).

4. A coal mine screening machine according to claim 3, characterized in that: The screening cylinder (4) includes an inclined plate (401) on the inner wall for conveying coal, a reinforcing strip (402) on the outer wall of the screening cylinder (4), and a screen (403) for screening coal.

5. A coal mine screening machine according to claim 4, characterized in that: A protective shell (18) is fixedly connected to the upper surface of the outer shell (1), and a cleaning rod (19) is inserted into the upper surface of the protective shell (18). The bottom end of the cleaning rod (19) extends into the interior of the outer shell (1) and is used in conjunction with the screening cylinder (4).

6. A coal mine screening machine according to claim 5, characterized in that: The cleaning rod (19) includes a vertical rod (1901) inserted into the upper surface of the protective shell (18), a wedge block (1902) fixedly connected to the bottom end of the vertical rod (1901), a spring (1903) sleeved on the outer wall of the vertical rod (1901), and a retaining ring (1904) fixedly connected to the outer wall at the bottom of the vertical rod (1901) for limiting the spring (1903).

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