Coal mining screening machine

Abstract

The invention discloses a coal mining screening machine, which relates to the technical field of coal mining, comprising a bottom plate, and also comprising: a fixed plate fixedly arranged on the bottom plate, the top of the fixed plate fixedly connected to the inclined plate; a screening mechanism arranged on one side of the inclined plate, comprising a transmission box fixedly arranged on one side of the inclined plate, a transmission assembly being arranged in the transmission box, a side wall of the transmission box being rotatably connected to a rotating column, an end portion of the rotating column being fixedly connected to a screening drum, a feeding port being provided on one side of a top wall of the screening drum, a side wall of the screening drum being provided with a discharging port, a screening assembly being provided in the discharging port, one side of the bottom plate being fixedly connected to a fixing frame, a material guide plate being rotatably connected on the fixing frame, a mounting beam being fixedly connected to the fixing frame below the material guide plate, a reset piece being fixedly connected between the mounting beam and the material guide plate, a valve assembly being provided on one side of an air pump, a telescopic assembly being provided on one side of the inclined plate, a material discharge port being provided on the material guide plate, the material discharge port being provided corresponding to the material discharge port, and a baffle being fixedly connected to the material guide plate on one side of the material discharge port.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, in particular to a coal mining screening machine. Background Art

[0002] A mine mainly consists of one or more mining workshops and some auxiliary workshops. Most mines also include beneficiation plants. Mines include coal mines, metal mines, non-metallic mines, building materials mines, chemical mines, etc. The scale of a mine (also known as production capacity) is usually expressed in annual output or daily output. The annual output is the amount of ore produced by the mine each year. According to the size of the output, it is divided into three types: large, medium and small. Screening machines are needed in the process of coal mining to screen the coal into different particle sizes according to actual usage needs.

[0003] In the actual screening process, traditional screening machines can only perform simple screening operations. However, it is not easy for operators to quickly judge the progress of the screening during the screening process, and there is no way to quickly enter the screening of particles of another diameter. This leads to low screening efficiency of the device and incomplete screening, which affects the quality of the coal after classification. Summary of the Invention

[0004] The present invention provides a coal mining screening machine, which solves the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A coal mining screening machine comprises a bottom plate and further comprises:

[0007] The top of the fixing plate is fixedly provided on the bottom plate, and the top of the fixing plate is fixedly connected to the inclined plate; a screening mechanism is arranged on one side of the inclined plate, including a transmission box fixedly provided on one side of the inclined plate, a transmission assembly is arranged in the transmission box, the side wall of the transmission box is rotatably connected to the rotating column, the end of the rotating column is fixedly connected to the screening drum, a feeding port is provided on one side of the top wall of the screening drum, the side wall of the screening drum is provided with a discharging port, a screening assembly is arranged in the discharging port, and a plurality of discharging ports are provided, and the plurality of discharging ports are staggered. One side of the bottom plate is fixedly connected to the fixing frame, and the fixed frame is rotatably connected to the guide plate, and the fixing frame below the guide plate is fixedly connected to the mounting beam, and the mounting beam and the guide plate are fixedly connected to the reset part, the top side of the fixing frame is fixedly connected to the air pump, and a valve assembly is arranged on one side of the air pump, a telescopic assembly is arranged on one side of the inclined plate, a discharge port is provided on the guide plate, and the discharge port is arranged correspondingly to the discharge port, and a baffle is fixedly connected to the guide plate on the side of the discharge port.

[0008] As a preferred technical solution of the present invention, the transmission assembly includes a movable rod that slides through the transmission box, one side of the movable rod is rotatably connected to the ratchet, and a stop block is fixedly connected to the movable rod on one side of the ratchet. The rotating column extends into the transmission box, and one end is fixedly sleeved on the ratchet, and the ratchet is transmission-connected to the ratchet.

[0009] As a preferred technical solution of the present invention, the screening assembly includes a partition arranged on one side of the discharge port, the partition is fixedly connected to the screening drum, and limiting grooves are provided on the side walls of the screening drum on both sides of the discharge port. A screening net is slidably arranged in the limiting groove, and a vibration motor is fixedly connected to one side of the screening net. An elastic member is arranged between the screening net and the limiting groove.

[0010] As a preferred technical solution of the present invention, the valve assembly includes an air guide cylinder fixedly arranged on one side of the fixed frame, the air guide cylinder is connected to the air pump, a valve rod is slidingly penetrated on the air guide cylinder, a valve port is opened on the valve rod, and a transmission rod is hinged between the bottom end of the valve rod and the guide plate.

[0011] As an optimal technical solution of the present invention, the telescopic assembly includes an air cylinder fixedly arranged on one side of the inclined plate, a piston block is slidably arranged in the air cylinder, one side of the piston block is fixedly connected to a piston column, a telescopic part is sleeved on the piston column, the end of the piston column is fixedly connected to a push rod, and the push rod is fixedly connected to the movable rod.

[0012] As a preferred technical solution of the present invention, the bottom plate is fixedly connected to a material receiving box, and the material receiving box is arranged corresponding to the material discharge port.

[0013] As a preferred technical solution of the present invention, a conduit is fixedly connected between the inflation cylinder and the air guide cylinder, and the inflation cylinder and the air guide cylinder are communicated with each other through the interior of the conduit.

[0014] The present invention has the following advantages: during operation, the coal to be classified and screened is put into the screening cylinder through the feed port, and the coal particles flow to one side of the partition under the action of their own gravity. Under the action of the vibration motor, the screening net reciprocates in the limit groove to realize rapid screening of the coal particles. At the same time, the air pump is turned on, and the valve port on the valve stem is connected to the air guide cylinder in the initial state. The air pump slowly rushes gas into the inflation cylinder through the conduit. Under the action of the gas pressure, the piston block drives the piston column to move upward and drives the movable rod to move upward through the push rod. In this process, as the screening operation proceeds, the screened coal will continuously fall on the guide plate. In coal mines, the guide plate rotates under the action of the gravity of the coal and flows to the lower material port. During the rotation, the transmission rod can drive the valve stem to move upward, and the valve port on the valve stem is separated from the air guide cylinder. At this time, the piston column can drive the movable rod to reset under the action of the telescopic part. After the coal particles of a certain diameter type are screened, the rotating plate is reset, and the above-mentioned inflation process continues. Under the action of the ratchet, the ratchet can be driven to rotate, and the coal particles fall on the next screening station. The above steps are repeated for screening. This process can ensure that the coal screening is thorough, the screening efficiency is higher, and the operation is convenient, and the screened coal has a higher purity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a coal mining screening machine from the main perspective.

[0016] Figure 2 This is a structural schematic diagram of the front of a coal mining screening machine.

[0017] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A in the figure.

[0018] Figure 4 This is a schematic diagram of the internal structure of a screening cylinder in a coal mining screening machine.

[0019] Figure 5 This is a structural schematic diagram of the cross section of a screening cylinder in a coal mining screening machine.

[0020] Figure 6 This is a schematic diagram of the structure inside a transmission box in a coal mining screening machine.

[0021] Figure 7 The figure is a schematic diagram of the overall structure of a coal mining screening machine viewed from above.

[0022] In the figure: 1. bottom plate; 2. fixed plate; 3. inflating cylinder; 4. movable rod; 5. transmission box; 6. push rod; 7. screening cylinder; 8. feeding port; 9. screening net; 10. air guide cylinder; 11. guide plate; 12. reset member; 13. mounting beam; 14. baffle; 15. receiving box; 16. air pump; 17. fixed frame; 18. rotating column; 19. piston block; 20. telescopic member; 21. piston column; 22. guide tube; 23. valve stem; 24. valve port; 25. inclined plate; 26. partition; 27. transmission rod; 28. discharge port; 29. ​​elastic member; 30. vibration motor; 31. limit groove; 32. ratchet; 33. block; 34. ratchet; 35. discharge port; 36. screening mechanism; 37. transmission assembly; 38. screening assembly; 39. valve assembly; 40. telescopic assembly. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example 1

[0025] See also Figure 1-7 A coal mining screening machine includes a bottom plate 1, and also includes: a fixed plate 2 fixedly arranged on the bottom plate 1, the top of the fixed plate 2 is fixedly connected to the inclined plate 25; a screening mechanism 36 arranged on one side of the inclined plate 25, including a transmission box 5 fixedly arranged on one side of the inclined plate 25, a transmission assembly 37 is arranged in the transmission box 5, the side wall of the transmission box 5 is rotatably connected to the rotating column 18, the end of the rotating column 18 is fixedly connected to the screening drum 7, a feeding port 8 is opened on one side of the top wall of the screening drum 7, a discharge port 28 is opened on the side wall of the screening drum 7, a screening assembly 38 is arranged in the discharge port 28, a plurality of discharge ports 28 are provided, and the plurality of discharge ports 28 are staggered. One side of the fixed frame 17 is fixedly connected to the fixed frame 17, which is rotatably connected to the guide plate 11. The fixed frame 17 below the guide plate 11 is fixedly connected to the mounting beam 13. The mounting beam 13 and the guide plate 11 are fixedly connected to a reset member 12. The reset member 12 can use a spring or elastic metal sheet with telescopic properties. One side of the top of the fixed frame 17 is fixedly connected to the air pump 16. A valve assembly 39 is provided on one side of the air pump 16. A telescopic assembly 40 is provided on one side of the inclined plate 25. A discharge port 35 is provided on the guide plate 11. The discharge port 35 is corresponding to the discharge port 28. A baffle 14 is fixedly connected to the guide plate 11 on one side of the discharge port 35.

[0026] Example 2

[0027] See also Figure 1-7A coal mining screening machine includes a bottom plate 1, and also includes: a fixed plate 2 fixedly arranged on the bottom plate 1, the top of the fixed plate 2 is fixedly connected to the inclined plate 25; a screening mechanism 36 arranged on one side of the inclined plate 25, including a transmission box 5 fixedly arranged on one side of the inclined plate 25, a transmission assembly 37 is arranged in the transmission box 5, the side wall of the transmission box 5 is rotatably connected to the rotating column 18, the end of the rotating column 18 is fixedly connected to the screening drum 7, a feeding port 8 is opened on one side of the top wall of the screening drum 7, a discharge port 28 is opened on the side wall of the screening drum 7, a screening assembly 38 is arranged in the discharge port 28, a plurality of discharge ports 28 are provided, and the plurality of discharge ports 28 are staggered. One side of the fixed frame 17 is fixedly connected to the fixed frame 17, which is rotatably connected to the guide plate 11. The fixed frame 17 below the guide plate 11 is fixedly connected to the mounting beam 13. The mounting beam 13 and the guide plate 11 are fixedly connected to a reset member 12. The reset member 12 can use a spring or elastic metal sheet with telescopic properties. One side of the top of the fixed frame 17 is fixedly connected to the air pump 16. A valve assembly 39 is provided on one side of the air pump 16. A telescopic assembly 40 is provided on one side of the inclined plate 25. A discharge port 35 is provided on the guide plate 11. The discharge port 35 is corresponding to the discharge port 28. A baffle 14 is fixedly connected to the guide plate 11 on one side of the discharge port 35.

[0028] The transmission assembly 37 includes a movable rod 4 that slides through the transmission box 5, one side of the movable rod 4 is rotatably connected to the ratchet 32, and a stopper 33 is fixedly connected to the movable rod 4 on one side of the ratchet 32. The rotating column 18 extends into the transmission box 5, and one end is fixedly sleeved with the ratchet 34. The ratchet 34 is transmission-connected to the ratchet 32. During operation, when the movable rod 4 moves upward, the ratchet 32 ​​can drive the ratchet 34 to rotate under the action of the stopper 33. When the movable rod 4 moves downward, the ratchet 32 ​​rotates and cannot drive the ratchet 34 to rotate.

[0029] The screening assembly 38 includes a partition 26 arranged on one side of the discharge port 28, the partition 26 is fixedly connected to the screening drum 7, and the side walls of the screening drum 7 on both sides of the discharge port 28 are provided with limiting grooves 31. A screening net 9 is slidably arranged in the limiting grooves 31, and a vibration motor 30 is fixedly connected to one side of the screening net 9. An elastic member 29 is fixedly arranged between the screening net 9 and the limiting grooves 31. The elastic member 29 can use a spring with telescopic properties or an elastic metal sheet, etc.

[0030] The valve assembly 39 includes an air cylinder 10 fixedly arranged on one side of the fixed frame 17, the air cylinder 10 is connected to the air pump 16, a valve rod 23 is slidably provided on the air cylinder 10, a valve port 24 is provided on the valve rod 23, and a transmission rod 27 is hinged between the bottom end of the valve rod 23 and the guide plate 11.

[0031] The telescopic assembly 40 includes an air cylinder 3 fixedly arranged on one side of the inclined plate 25, a piston block 19 slidingly arranged in the air cylinder 3, one side of the piston block 19 fixedly connected to the piston column 21, and a telescopic part 20 is sleeved on the piston column 21. The telescopic part 20 can use a spring or elastic metal sheet with telescopic properties, etc. The two ends of the telescopic part 20 are respectively fixedly connected to the piston block 19 and the top wall of the air cylinder 3, the end of the piston column 21 is fixedly connected to the push rod 6, and the push rod 6 is fixedly connected to the movable rod 4.

[0032] The bottom plate 1 is fixedly connected to a material receiving box 15 , which is corresponding to the material discharge port 35 . The inflatable cylinder 3 and the air guide cylinder 10 are fixedly connected to a conduit 22 , which is internally connected to the inflatable cylinder 3 and the air guide cylinder 10 through the conduit 22 .

[0033] The present invention has the following advantages: during operation, the coal to be classified and screened is put into the screening cylinder 7 through the feed port 8. Under the action of its own gravity, the coal particles flow to the side of the partition 26. Under the action of the vibration motor 30, the screening net 9 reciprocates in the limit groove 31 to realize rapid screening of the coal particles. At the same time, the air pump 16 is turned on. In the initial state, the valve port 24 on the valve stem 23 is connected with the air guide cylinder 10. The air pump 16 slowly rushes gas into the inflation cylinder 3 through the conduit 22. Under the action of the gas pressure, the piston block 19 drives the piston column 21 to move upward and drives the movable rod 4 to move upward through the push rod 6. In this process, as the screening operation proceeds, the coal particles will continuously fall from the guide plate 11. For the screened coal, the guide plate 11 rotates under the action of the gravity of the coal and flows to the lower material port 35. During the rotation, the transmission rod 27 can drive the valve rod 23 to move upward, and the valve port 24 on the valve rod 23 is separated from the air guide cylinder 10. At this time, under the action of the telescopic member 20, the piston column 21 can drive the movable rod 4 to reset. After the coal particles of a certain diameter type are screened, the rotating plate is reset, and the above-mentioned inflation process continues. Under the action of the ratchet 32, the ratchet wheel 34 can be driven to rotate, and the coal particles fall on the next screening station. The above steps are repeated for screening. This process can ensure that the coal screening is thorough, the screening efficiency is higher, and the operation is convenient, and the screened coal has a higher purity.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A coal mining screening machine, comprising a bottom plate, characterized in that: Also includes: A fixed plate is fixedly arranged on the bottom plate, and the top of the fixed plate is fixedly connected to the inclined plate; The screening mechanism is arranged on one side of the inclined plate, including a transmission box fixedly arranged on one side of the inclined plate, a transmission assembly is arranged in the transmission box, a side wall of the transmission box is rotatably connected to a rotating column, an end of the rotating column is fixedly connected to a screening drum, a feeding port is provided on one side of the top wall of the screening drum, a discharging port is provided on the side wall of the screening drum, a screening assembly is arranged in the discharging port, a plurality of discharging ports are provided, and the plurality of discharging ports are staggered, one side of the bottom plate is fixedly connected to a fixing frame, a guide plate is rotatably connected on the fixing frame, a mounting beam is fixedly connected to the fixing frame below the guide plate, a reset piece is fixedly connected between the mounting beam and the guide plate, a top side of the fixing frame is fixedly connected to an air pump, a valve assembly is arranged on one side of the air pump, a telescopic assembly is arranged on one side of the inclined plate, a discharge port is provided on the guide plate, the discharge port and the discharge port are arranged correspondingly, and a baffle is fixedly connected to the guide plate on one side of the discharge port; The transmission assembly includes a movable rod that slides through the transmission box, one side of the movable rod is rotatably connected to the ratchet, and a stopper is fixedly connected to the movable rod on one side of the ratchet. The rotating column extends into the transmission box, and one end is fixedly sleeved on the ratchet, and the ratchet is transmission-connected to the ratchet; The screening assembly includes a partition provided on one side of the discharge port, the partition being fixedly connected to the screening drum, and limiting grooves being provided on the side walls of the screening drum on both sides of the discharge port, a screening net being slidably provided in the limiting grooves, one side of the screening net being fixedly connected to a vibration motor, and an elastic member being provided between the screening net and the limiting grooves; The valve assembly includes an air guide cylinder fixedly arranged on one side of the fixing frame, the air guide cylinder is connected to the air pump, a valve rod is slidingly provided on the air guide cylinder, a valve port is provided on the valve rod, and a transmission rod is hinged between the bottom end of the valve rod and the guide plate.

2. A coal mining screening machine according to claim 1, characterized in that: The telescopic assembly includes an air cylinder fixedly arranged on one side of the inclined plate, a piston block slidingly arranged in the air cylinder, one side of the piston block fixedly connected to a piston column, a telescopic part is sleeved on the piston column, the end of the piston column is fixedly connected to a push rod, and the push rod is fixedly connected to the movable rod.

3. A coal mining screening machine according to claim 1, characterized in that: The bottom plate is fixedly connected to a material receiving box, which is arranged corresponding to the material discharge port.

4. A coal mining screening machine according to claim 2, characterized in that: A conduit is fixedly connected between the inflation cylinder and the air guide cylinder, and the inflation cylinder and the air guide cylinder are communicated with each other through the interior of the conduit.

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