Pneumatic coal separation jigger with movable sieve

Abstract

The utility model relates to the field of coal dressing technology, in particular to a movable screen wind power coal dressing jigger which comprises a movable screening bed, the movable screening bed comprises a joist and a dressing bed installed on the joist, and a jigging driving mechanism used for driving the dressing bed to vibrate in a casting mode is installed below the joist. A base adjusting mechanism used for adjusting the inclination angle of the selecting bed is arranged below the jigging driving mechanism, an air blowing mechanism used for providing upward air and a discharging mechanism used for discharging materials in a layered mode are arranged on the selecting bed, and a dust removing mechanism is arranged above the selecting bed. The throwing inclination angle of the selecting bed can be changed through the base adjusting mechanism, the jigging driving mechanism provides vibration throwing power for the selecting bed, the air blowing mechanism provides air volume for the selecting bed, pulse air is formed under vibration of the selecting bed, and materials are fed into the jigging machine through the belt conveyor and make obliquely upward throwing movement under the vibration effect of the selecting bed. In the casting process, the materials are layered under the dual action of pulse wind and gravity, and the purpose of accurately and efficiently sorting the materials with different densities is effectively achieved.

Description

Technical Field

[0001] The utility model relates to the field of coal preparation technology, in particular to a moving screen wind coal jigging machine. Background Art

[0002] A jigging machine is a mechanical device for sorting materials based on the principle of fluid mechanics, especially suitable for dewatering, de-sludging of bulk materials with relatively coarse particle sizes, and washing and sorting of solid particles. Its core technology lies in using the relative movement of the upward flow and the lifted flow of the fluid to achieve the separation of materials.

[0003] The jigging machine plays a key role in coal washing, and can effectively remove impurities such as gangue powder in coal, and improve the calorific value and combustion stability of coal. With the development of technology, the market has higher and more stringent requirements for the coal washing quality in the coal preparation industry. How to accurately and effectively separate each density component in coal materials, and adapt to the sorting of more different density materials, is the key point and difficulty of technological innovation in the coal preparation industry. Summary of the Utility Model

[0004] In order to accurately and efficiently sort materials with different densities, the utility model provides a moving screen wind coal jigging machine.

[0005] The moving screen wind coal jigging machine provided by the utility model adopts the following technical scheme:

[0006] A moving screen wind coal jigging machine includes a moving screen bed, the moving screen bed includes a supporting beam and a screening bed installed on the supporting beam, a jigging drive mechanism for driving the screening bed to perform projectile vibration is installed below the supporting beam, a base adjustment mechanism for adjusting the inclination angle of the screening bed is arranged below the jigging drive mechanism, a blowing mechanism for providing upward air volume and a discharging mechanism for stratifying and discharging materials are arranged on the screening bed, and a dust removal mechanism is arranged above the screening bed.

[0007] By adopting the above technical scheme, the projectile inclination angle of the screening bed can be changed by the base adjustment mechanism, the jigging drive mechanism provides the power for vibration and projectile of the screening bed, the blowing mechanism provides air volume for the screening bed, and a pulsed wind is formed under the vibration of the screening bed. Materials are fed into the jigging machine through a belt conveyor, and perform an obliquely upward projectile motion under the vibration of the screening bed. During the projectile process, the materials are stratified under the dual action of the pulsed wind and gravity, effectively achieving the purpose of accurately and efficiently sorting materials with different densities.

[0008] Optionally, the jigging drive mechanism includes a first base seat and a second base seat. A support shaft is hinged on the first base seat, and a support shaft is also hinged on the second base seat. An installation frame is fixed on the second base seat, an eccentric shaft is installed on the installation frame, a drive shaft is installed on the eccentric shaft, and the supporting beam is hinged to the top ends of the drive shaft and the support shaft.

[0009] By adopting the above technical solution, the eccentric shaft can be driven to rotate by the driving motor, and then drive the driving shaft to drive the supporting beam to project and vibrate, effectively achieving the purpose of obliquely upward projection and advancement of the material. The jig driving mechanism is easy to operate and has stable performance.

[0010] Optionally, the base adjustment mechanism includes a first bottom support and a second bottom support. A bottom girder for supporting the jig driving mechanism is hinged on the first bottom support, and an adjustment rod is hinged on the second bottom support. A supporting table that can adjust its position and is used to support the bottom girder is sleeved and installed on the adjustment rod.

[0011] By adopting the above technical solution, when it is necessary to adjust the projection angle, the operator can adjust the position of the supporting table on the adjustment rod, which is very convenient in operation and effectively changes the different projection angles of the separation bed.

[0012] Optionally, the air blowing mechanism includes an air blowing hopper connected to the bottom of the separation bed, and an air blowing pipe for providing air volume is connected to the air blowing hopper.

[0013] By adopting the above technical solution, the air blowing hopper and the air blowing pipe cooperate to provide a constant upward air volume to the separation bed, and form a pulsed air under the vibration of the separation bed, so as to effectively achieve the purpose of separating the material.

[0014] Optionally, the discharging mechanism includes a baffle plate installed on the separation bed. A discharge port is arranged at the position in front of the baffle plate on the separation bed, a discharge pipe is arranged below the discharge port, and a discharge wheel is installed on the discharge pipe.

[0015] By adopting the above technical solution, the baffle plate blocks the corresponding material bed layer, and the corresponding material enters the discharge pipe through the discharge port and is then discharged through the discharge wheel. The discharging mechanism has a reasonable structural design and can achieve the purpose of discharging the material.

[0016] Optionally, a bed layer thickness detector for controlling the discharge wheel is arranged above the separation bed.

[0017] By adopting the above technical solution, the bed layer thickness detector is used to detect the thickness of the corresponding material bed layer, so as to control the rotation speed of the discharge wheel, achieve the purpose of automatic discharge control, and effectively ensure the thickness of each material bed layer and the discharging process.

[0018] Optionally, the dust removal mechanism includes a dust suction hood and a guide air pipe, and the bed layer thickness detector is installed on the dust suction hood.

[0019] By adopting the above technical solution, the dust is discharged through the dust suction hood and the guide air pipe. The bed layer thickness detector is installed on the dust suction hood, which is convenient for real-time monitoring of the bed layer thickness, and is also convenient for installation, maintenance and disassembly.

[0020] Optionally, the baffle plate is fixed to the separation bed by adjusting bolts with adjustable height positions.

[0021] By adopting the above technical solution, when it is necessary to change the thickness of the material bed, the height of the baffle plate relative to the separation bed is adjusted, and then it can be fixed again through the position adjustment bolts, which is very simple and effective in operation.

[0022] In summary, the utility model includes at least one of the following beneficial technical effects:

[0023] The ejection inclination angle of the separation bed can be changed by the base adjustment mechanism. The jigging drive mechanism provides the power for vibration and ejection to the separation bed, and the air blowing mechanism provides the air volume to the separation bed, and a pulsed air is formed under the vibration of the separation bed. The material is fed into the jig through the belt conveyor and performs an upward inclined ejection movement under the vibration of the separation bed. During the ejection process, the material is stratified under the dual action of the pulsed air and gravity, effectively achieving the purpose of accurately and efficiently separating materials of different densities;

[0024] The eccentric shaft can be driven to rotate by the drive motor, and then drive the drive shaft to drive the support beam to perform ejection vibration, effectively achieving the purpose of the material moving forward by upward inclined ejection. The jigging drive mechanism is simple to operate and has stable performance;

[0025] When it is necessary to adjust the ejection inclination angle, the operator can adjust the position of the supporting platform on the adjustment rod, which is very convenient in operation and effectively changes different ejection inclination angles of the separation bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the moving screen wind-powered coal jig of the embodiment of the utility model.

[0027] Figure 2 is a partial structural schematic diagram of the moving screen wind-powered coal jig of the embodiment of the utility model.

[0028] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0029] Description of the reference numerals: 1. Base adjustment mechanism; 10. First bottom support; 11. Second bottom support; 12. Adjustment rod; 13. Supporting platform; 14. Bottom girder; 2. Jigging drive mechanism; 20. First bottom pedestal; 21. Second bottom pedestal; 22. Support shaft; 23. Mounting frame; 24. Eccentric shaft; 25. Drive shaft; 3. Moving screen separation bed; 30. Support beam; 31. Separation bed; 4. Air blowing mechanism; 40. Air blowing hopper; 41. Air blowing pipe; 5. Discharge mechanism; 50. Baffle plate; 51. Position adjustment bolt; 52. Discharge pipe; 53. Discharge wheel; 54. Bed thickness detector; 6. Dust removal mechanism; 60. Dust suction hood; 61. Air guide pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will Figure 1 - be further described in detail with reference to the Figure 3 drawings for the present utility model.

[0031] An embodiment of the utility model discloses a moving screen wind coal jigging machine. Refer to Figure 1 and Figure 2 , the moving screen wind coal jigging machine includes a base adjustment mechanism 1, a jigging drive mechanism 2, a moving screen bed 3, a blowing mechanism 4, a discharging mechanism 5 and a dust removal mechanism 6.

[0032] Refer to Figure 1 and Figure 2 , the base adjustment mechanism 1 includes a first bottom support 10, a second bottom support 11, an adjustment rod 12, a supporting platform 13 and a bottom girder 14. The bottom end of the adjustment rod 12 is hinged to the second bottom support 11, the supporting platform 13 is installed on the adjustment rod 12 through a pin whose position can be changed, one end of the bottom girder 14 is hinged to the first bottom support 10, and the other end of the bottom girder 14 is installed on the supporting platform 13 by means of scaffolding, and the supporting platform 13 provides a vertical supporting force for the bottom girder 14.

[0033] Refer to Figure 1 and Figure 2 , the jigging drive mechanism 2 is installed on the bottom girder 14. The jigging drive mechanism 2 includes a first bottom pedestal 20, a second bottom pedestal 21, a support shaft 22, a mounting frame 23, an eccentric shaft 24 and a drive shaft 25. The first bottom pedestal 20 and the second bottom pedestal 21 are respectively fixed at both ends of the bottom girder 14. There are two support shafts 22 which are respectively hinged to the first bottom pedestal 20 and the second bottom pedestal 21. The mounting frame 23 is fixed to the second bottom pedestal 21. The eccentric shaft 24 is installed on the mounting frame 23. The eccentric shaft 24 is provided with the power of rotation by a drive motor, and the drive shaft 25 is installed on the eccentric shaft 24 and is driven by the eccentric shaft 24.

[0034] Refer to Figure 1 and Figure 2 , the moving screen bed 3 is arranged above the jigging drive mechanism 2 and is driven by the jigging drive mechanism 2. The moving screen bed 3 includes a supporting beam 30 and a screening bed 31. The supporting beam 30 is respectively hinged to the drive shaft 25 and the two support shafts 22. The screening bed 31 is installed on the supporting beam 30. The screening bed 31 is a grid structure. The moving screen bed 3 vibrates according to a trajectory with an upward projection angle of 42° - 48°. The material climbs forward in the screening bed 31. By changing the position of the supporting platform 13 on the adjustment rod 12, the inclination angle of the moving screen bed 3 can be changed.

[0035] Refer to Figure 1, the air-blowing mechanism 4 acts on the separating table 31. The air-blowing mechanism 4 includes an air-blowing hopper 40 and an air-blowing pipe 41. There are four air-blowing hoppers 40, which are respectively installed at the bottom of the separating table 31. The air-blowing pipe 41 is connected to the bottom of the air-blowing hopper 40 and is blown by a blower. Due to the constant air volume with a certain pressure at the bottom of the separating table 31, it promotes the formation of pulsating wind on the separating table 31 that is consistent with the vibration frequency of the separating table 31. Under the action of the pulsating wind and the projectile vibration obliquely above the separating table 31, the materials are stratified according to density and climb forward.

[0036] Referring to Figure 1 and Figure 2 , the discharging mechanism 5 acts on the separating table 31. The discharging mechanism 5 includes a baffle 50, an adjusting bolt 51, a discharging pipe 52, a discharging wheel 53 and a bed thickness detector 54. Referring to Figure 2 and Figure 3 , there are two baffles 50. One baffle 50 is arranged at the middle position of the separating table 31 to block gangue, and the other baffle 50 is arranged at the outlet of the separating table 31 to block medium coal. The baffle 50 is vertically installed on the separating table 31 through the adjusting bolt 51, and the height of the baffle 50 can be changed according to the thickness of the required material bed.

[0037] Referring to Figure 1 and Figure 2 , the discharging pipe 52 is connected to the bottom of the separating table 31. There is a discharging port corresponding to the discharging pipe 52 on the separating table 31. The discharging port for blocking gangue or medium coal is in front of the baffle 50, and the discharging port for discharging clean coal is behind the baffle 50. After the baffle 50 blocks gangue or medium coal, the gangue or medium coal is discharged through the discharging pipe 52. The discharging wheel 53 is installed on the discharging pipe 52 to control the discharging speed. The bed thickness detector 54 is arranged above the separating table 31 to detect the thickness of the corresponding material bed. According to the detection data, the rotation speed of the discharging wheel 53 is adjusted to achieve the purpose of automatic control of the discharging speed.

[0038] Referring to Figure 1 , the dust removal mechanism 6 is arranged above the separating table 31. The dust removal mechanism 6 includes a dust suction hood 60 and a duct 61. The dust suction hood 60 is used for dust removal during the vibration of the separating table 31, and the duct 61 is used for transporting dust to the dust collector. The bed thickness detector 54 can be installed on the dust suction hood 60.

[0039] The implementation principle of the moving screen wind-force coal washing jig of the embodiment of the present utility model is as follows: the projectile inclination angle of the separating table 31 can be changed by the base adjustment mechanism 1, the jig drive mechanism 2 provides the power of vibration and projectile for the separating table 31, the air-blowing mechanism 4 provides the air volume for the separating table 31, and a pulsed wind is formed under the vibration of the separating table 31. The materials are quantitatively fed into the jig through a belt conveyor and perform an obliquely upward projectile motion under the vibration of the separating table 31. During the projectile process, the materials are stratified under the dual action of the pulsed wind and gravity.

[0040] The gangue is located in the lower layer, the middlings are located in the middle layer, and the clean coal is located in the upper layer. During the stratification process, the bed thickness detector 54 automatically controls the discharge wheel 53, achieving the controllability of material discharge. The gangue is discharged through the discharge mechanism 5 in the middle of the separation bed 31, the middlings are discharged through the discharge mechanism 5 at the tail of the separation bed 31, and the clean coal is finally discharged at the rear side of the tail of the separation bed 31, thus achieving the purpose of stratified separation and discharge of the three materials and adapting to various scenarios of density separation of different materials.

[0041] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A moving screen wind coal jig, characterized in that: It includes a moving screening bed (3), the moving screening bed (3) includes a supporting beam (30) and a screening bed (31) installed on the supporting beam (30). Below the supporting beam (30), a jigging drive mechanism (2) for driving the screening bed (31) to perform projectile vibration is installed. Below the jigging drive mechanism (2), a base adjustment mechanism (1) for adjusting the inclination angle of the screening bed (31) is provided. On the screening bed (31), a blowing mechanism (4) for providing upward air volume and a discharging mechanism (5) for stratifying and discharging materials are provided. Above the screening bed (31), a dust removal mechanism (6) is provided.

2. The moving screen wind coal jig according to claim 1, characterized in that: The jigging drive mechanism (2) includes a first bottom pedestal (20) and a second bottom pedestal (21). A support shaft (22) is hinged on the first bottom pedestal (20), and a support shaft (22) is also hinged on the second bottom pedestal (21). An installation frame (23) is fixed on the second bottom pedestal (21). An eccentric shaft (24) is installed on the installation frame (23), and a drive shaft (25) is installed on the eccentric shaft (24). The supporting beam (30) is hinged to the top ends of the drive shaft (25) and the support shaft (22).

3. The shaking screen wind coal jig according to claim 1 or 2, characterized in that: The base adjustment mechanism (1) includes a first bottom support (10) and a second bottom support (11). A bottom main beam (14) for supporting the jigging drive mechanism (2) is hinged on the first bottom support (10). An adjustment rod (12) is hinged on the second bottom support (11). A supporting platform (13) that can adjust its position and is used to support the bottom main beam (14) is sleeved on the adjustment rod (12).

4. The moving screen wind coal jig according to claim 1, characterized in that: The blowing mechanism (4) includes a blowing hopper (40) connected to the bottom of the screening bed (31), and a blowing air pipe (41) for providing air volume is connected to the blowing hopper (40).

5. The moving screen wind coal jig according to claim 1, characterized in that: The discharging mechanism (5) includes a baffle plate (50) installed on the screening bed (31). A discharge port is provided at a position corresponding to the front of the baffle plate (50) on the screening bed (31). A discharge pipe (52) is provided below the discharge port, and a discharge wheel (53) is installed on the discharge pipe (52).

6. The moving screen wind power coal jig according to claim 5, wherein: Above the screening bed (31), a bed layer thickness detector (54) for controlling the discharge wheel (53) is provided.

7. The moving screen wind coal jig according to claim 6, wherein: The dust removal mechanism (6) includes a dust suction hood (60) and a duct (61), and the bed layer thickness detector (54) is installed on the dust suction hood (60).

8. The moving screen wind coal jig according to claim 5, characterized in that: The baffle plate (50) is fixed to the screening bed (31) by an adjustment bolt (51) with an adjustable height position.

Images