Coal mill powder concentrator capable of reducing fineness of pulverized coal

Abstract

The utility model relates to the technical field of coal mill powder concentrators, in particular to a coal mill powder concentrator capable of reducing fineness of pulverized coal, which comprises a base, a casing, a powder outlet pipe and a feeding mechanism. A machine shell is connected to the upper surface of the base, a powder outlet pipe is connected to the upper portion of the inner wall of the machine shell in a penetrating mode, a feeding mechanism is arranged in the powder outlet pipe, a grinding disc is rotationally connected to the upper portion of the base through a gear motor, a crushing mechanism is arranged above the grinding disc, and a hanging bracket is arranged on the inner wall of the machine shell in a penetrating and sliding mode. According to the coal mill powder concentrator capable of reducing the fineness of the pulverized coal, the distance between a grinding wheel and a grinding disc is adjusted by starting a hydraulic rod, the grinding fineness is controlled, then a servo motor is started to drive all folding plates to rotate, the rotational flow is adjusted, the screening fineness is controlled, and then the fineness of the coal mill powder concentrator is reduced; the grinding disc drives the bevel gear ring to drive the disc to rotate, the pressing plate is driven to continuously move up and down, coal mines on the grinding disc are extruded, and then the coal mill powder concentrator assists in crushing.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mill and coal powder concentrator technical field, specifically to a kind of coal mill and coal powder concentrator of reducing coal powder fineness. BACKGROUND

[0002] Coal mill and coal powder concentrator is a kind of equipment used in coal powder production process, main function is to grind coal into coal powder, then coal powder is sorted, screened, to ensure that coal powder particle size meets the use requirement, the existing coal mill and coal powder concentrator still have certain defects when using, for example,

[0003] The existing coal mill and coal powder concentrator mostly only grind coal into coal powder by grinding disc and grinding roller, then carry out sorting, only through the extrusion and grinding action between grinding roller and grinding disc to break coal block, difficult to break quickly, efficiency is low, and the existing coal mill and coal powder concentrator usually add coal into coal mill and coal powder concentrator through a vertical or inclined pipeline, when entering more coal in the process of coal falling, it is easy to jam, and some coal powder is continuously accumulated on the inner wall of pipeline, causing pipeline diameter to become smaller and smaller, easy to block, and the existing coal mill and coal powder concentrator mostly do not have the problem of feeding anti-blocking structure. SUMMARY

[0004] The utility model aims at providing a kind of coal mill and coal powder concentrator of reducing coal powder fineness to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of coal mill and coal powder concentrator of reducing coal powder fineness, comprising: base, machine shell, powder outlet pipe and feeding mechanism;

[0006] The upper surface of the base is connected with the machine shell, the inner wall of the machine shell is connected with the powder outlet pipe, the powder outlet pipe is provided with the feeding mechanism, the upper surface of the base is rotatably connected with the grinding disc by the reduction motor, the upper surface of the grinding disc is provided with the crushing mechanism, the inner wall of the machine shell is slidably connected with the hanger, the bottom of the hanger is connected with the grinding wheel, the grinding wheel is abutted on the grinding disc, the bottom of the hanger away from the grinding wheel is connected with the hydraulic rod, the hydraulic rod is connected to the outside of the machine shell, the inner wall of the machine shell is connected with the cyclone by the support plate, the upper surface of the cyclone is rotatably connected with the deflection plate, the rotation shaft of the deflection plate is connected with the spur gear above the inner wall of the machine shell, the spur gear is meshingly connected with the external gear ring on one side, the external gear ring is rotatably connected to the upper surface of the machine shell, the upper surface of the machine shell is connected with the servo motor by the support, the output end of the servo motor is connected with the spur gear by the shaft coupling;

[0007] The crushing mechanism includes: an annular shell, a piston shell, a lower piston rod, a pressure plate, a spring, an upper piston rod, a transmission plate, a disc, a horizontal bevel gear, a bevel gear ring, and a vertical plate. The annular shell is bolted to the inner wall of the housing near the upper part of the grinding disc. The piston shell is connected to the bottom of the annular shell by a bracket. The lower piston rod slides through the lower inner wall of the piston shell. The pressure plate is connected to the bottom of the lower piston rod. The pressure plate abuts against the grinding disc, and a spring is sleeved on the outer side of the pressure plate. The spring abuts against the inner wall of the piston shell.

[0008] Preferably, an upper piston rod slides through the upper inner wall of the piston housing, a transmission plate is rotatably connected to one side of the upper piston rod, and a disc is rotatably connected to one side of the transmission plate.

[0009] Preferably, a bevel gear is connected to one side of the disk, and the bevel gear rotates through the inner wall of the annular shell.

[0010] Preferably, a bevel gear ring is meshed with the lower part of the bevel gear. The bevel gear ring is disposed inside the annular shell, and a vertical plate is connected to the bottom of the bevel gear ring. The vertical plate is bolted to the upper surface of the grinding disc, and a sealing strip for sealing the gaps in the annular shell is connected to the outer side of the vertical plate.

[0011] Preferably, the feeding mechanism includes: a coal chute, a shell, an outer cylinder, an upper crushing rod, a rotating shaft, a lower crushing rod, a lower bevel gear, an upper bevel gear, a torque motor, a side bevel gear, and a spiral strip. The inner wall of the powder discharge pipe is bolted to the coal chute, and the inner wall of the coal chute is connected to the shell via a support plate. The outer cylinder rotates through the lower inner wall of the shell via a bearing. The outer side of the outer cylinder is connected to the upper crushing rod, and the other end of the upper crushing rod is connected to a spiral strip, which abuts against the inner wall of the coal chute.

[0012] Preferably, a rotating shaft is rotatably connected inside the outer cylinder, the rotating shaft is rotatably connected to the upper inner wall of the outer shell, and a lower crushing rod is connected to the outer side of the rotating shaft, the lower crushing rod being located below the upper crushing rod.

[0013] Preferably, a lower bevel gear is fixedly connected to the outer side of the outer cylinder, and an upper bevel gear is connected to the outer side of the rotating shaft. Both the lower bevel gear and the upper bevel gear are disposed inside the outer casing.

[0014] Preferably, a torque motor is connected to one side of the coal chute via a motor mount. The output end of the torque motor is connected to a side bevel gear through the inner wall of the coal chute and the outer casing. The side bevel gear is meshed with one side of the lower bevel gear and the upper bevel gear.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This coal mill classifier, which can reduce the fineness of coal powder, controls the grinding fineness by adjusting the distance between the grinding wheel and the grinding disc through the activation of the hydraulic rod, and then starts the servo motor to drive all the deflector plates to rotate, adjusting the size of the vortex to control the screening fineness, thereby allowing the coal mill classifier to reduce the fineness; the grinding disc drives the bevel gear ring to drive the disc to rotate, which in turn drives the pressure plate to move up and down continuously, squeezing the coal on the grinding disc, thereby allowing the coal mill classifier to assist in crushing. The specific details are as follows:

[0016] 1. By starting the hydraulic rod, the hanger and grinding wheel are moved up and down to adjust the distance between the grinding wheel and the grinding disc, and the grinding fineness is controlled. Then, the servo motor is started to drive the spur gear and external gear ring to rotate, which in turn drives all the deflector plates to rotate. The size of the vortex is adjusted to control the screening fineness, thereby reducing the fineness of the coal mill classifier.

[0017] 2. The grinding disc drives the vertical plate to rotate the bevel ring, which in turn drives the disc to rotate, driving the upper piston rod to squeeze the air in the piston shell, which in turn drives the lower piston rod and pressure plate to move downwards, squeezing the coal, thereby assisting the coal mill in crushing.

[0018] 3. By starting the torque motor, the side bevel gear drives the lower bevel gear and the upper bevel gear to rotate in opposite directions, which in turn drives the lower crushing rod and the upper crushing rod to rotate in opposite directions, thus moving and crushing the falling coal. At the same time, it drives the spiral to rotate, scraping the coal powder on the inner wall of the coal chute, thereby preventing the coal mill from getting clogged. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional cross-sectional structure of the casing of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the external toothed ring of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the hanger of this utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the annular shell of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the bevel gear ring of this utility model;

[0025] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the piston shell of this utility model;

[0026] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the coal chute of this utility model.

[0027] In the diagram: 1. Base; 2. Casing; 3. Powder outlet pipe; 4. Feeding mechanism; 401. Coal drop pipe; 402. Outer shell; 403. Outer cylinder; 404. Upper crushing rod; 405. Rotating shaft; 406. Lower crushing rod; 407. Lower bevel gear; 408. Upper bevel gear; 409. Torque motor; 410. Side bevel gear; 411. Spiral blade; 5. Grinding disc; 6. Crushing mechanism; 601. Annular shell; 602. Piston shell; 603. Lower piston rod; 604. Pressure plate; 605. Spring; 606. Upper piston rod; 607. Transmission plate; 608. Disc; 609. Horizontal bevel gear; 610. Bevel gear ring; 611. Vertical plate; 7. Hanger; 8. Grinding wheel; 9. Hydraulic rod; 10. Cyclone; 11. Deflector plate; 12. Spur gear; 13. External gear ring; 14. Servo motor. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-4 This utility model provides a technical solution: a coal mill classifier capable of reducing the fineness of coal powder, comprising: a base 1, a housing 2, a powder outlet pipe 3, and a feeding mechanism 4; the housing 2 is connected to the upper surface of the base 1, the powder outlet pipe 3 is connected through the upper part of the inner wall of the housing 2, the feeding mechanism 4 is arranged inside the powder outlet pipe 3, a grinding disc 5 is rotatably connected to the upper part of the base 1 via a reduction motor, a crushing mechanism 6 is arranged above the grinding disc 5, a hanger 7 slides through the inner wall of the housing 2, a grinding wheel 8 is connected to the bottom of the hanger 7, the grinding wheel 8 abuts against the grinding disc 5, and is away from the grinding disc 5. A hydraulic rod 9 is connected to the bottom of the hanger 7 of wheel 8. The hydraulic rod 9 is connected to the outside of the housing 2. A cyclone 10 is connected to the inner wall of the housing 2 through a support plate. A deflector plate 11 is rotatably connected to the upper surface of the cyclone 10. The shaft of the deflector plate 11 passes through the upper part of the inner wall of the housing 2 and is connected to a spur gear 12. An external gear ring 13 is meshed on one side of the spur gear 12. The external gear ring 13 is rotatably connected to the upper surface of the housing 2. A servo motor 14 is connected to the upper surface of the housing 2 through a bracket. The output end of the servo motor 14 is connected to the spur gear 12 through a coupling.

[0030] In practice, the hydraulic rod 9 is activated to move the hanger 7 up and down, and the hanger 7 moves the grinding wheel 8 up and down. The distance between the grinding wheel 8 and the grinding disc 5 is adjusted to control the grinding fineness. Then, the servo motor 14 is activated to drive the spur gear 12 to rotate. The spur gear 12 drives the external gear ring 13 to drive the other spur gears 12 to rotate together, which in turn drives all the deflector plates 11 to rotate. The size of the vortex is adjusted to control the screening fineness, so that the coal mill classifier can reduce the fineness.

[0031] See Figure 1 and Figures 5-7 It is known that the crushing mechanism 6 includes: an annular shell 601, a piston shell 602, a lower piston rod 603, a pressure plate 604, a spring 605, an upper piston rod 606, a transmission plate 607, a disc 608, a horizontal bevel gear 609, a bevel gear ring 610, and a vertical plate 611. The annular shell 601 is bolted to the inner wall of the casing 2 near the grinding disc 5. The bottom of the annular shell 601 is connected to the piston shell 602 via a bracket. The lower piston rod 603 slides through the lower inner wall of the piston shell 602. The bottom of the lower piston rod 603 is connected to the pressure plate 604, which abuts against the grinding disc 5. A spring 605 is sleeved on the outer side of the pressure plate 604, and the spring 605 abuts against the piston. On the inner wall of the housing 602, an upper piston rod 606 slides through the upper wall of the piston housing 602. A transmission plate 607 is rotatably connected to one side of the upper piston rod 606. A disc 608 is rotatably connected to one side of the transmission plate 607. A horizontal bevel gear 609 is connected to one side of the disc 608. The horizontal bevel gear 609 rotates through the inner wall of the annular housing 601. A bevel ring 610 is meshed below the horizontal bevel gear 609. The bevel ring 610 is set inside the annular housing 601, and a vertical plate 611 is connected to the bottom of the bevel ring 610. The vertical plate 611 is bolted to the upper surface of the grinding disc 5, and a sealing strip for sealing the gaps of the annular housing 601 is connected to the outside of the vertical plate 611.

[0032] In practice, the grinding disc 5 drives the vertical plate 611 to rotate the bevel gear ring 610, which in turn drives the horizontal bevel gear 609 to rotate the disc 608. The transmission plate 607 pulls the upper piston rod 606 up and down, squeezing the air in the piston shell 602. This causes the lower piston rod 603 to squeeze the spring 605, while simultaneously causing the pressure plate 604 to move downwards and squeeze the coal. Then, the spring 605 resets the lower piston rod 603 and lifts the pressure plate 604 to assist in crushing the coal.

[0033] See Figure 1 , Figure 2 and Figure 7It is known that the feeding mechanism 4 includes: a coal chute 401, a shell 402, an outer cylinder 403, an upper crushing rod 404, a rotating shaft 405, a lower crushing rod 406, a lower bevel gear 407, an upper bevel gear 408, a torque motor 409, a side bevel gear 410, and a spiral blade 411. The coal chute 401 is bolted to the inner wall of the powder discharge pipe 3. The shell 402 is connected to the inner wall of the coal chute 401 via a support plate. The outer cylinder 403 rotates through the lower part of the inner wall of the shell 402 via a bearing. The upper crushing rod 404 is connected to the outer side of the outer cylinder 403. The other end of the upper crushing rod 404 is connected to the spiral blade 411. The spiral blade 411 abuts against the inner wall of the coal chute 401. The outer cylinder 403 rotates within the outer cylinder. A rotating shaft 405 is connected to the upper inner wall of the outer casing 402, and a lower crushing rod 406 is connected to the outer side of the rotating shaft 405. The lower crushing rod 406 is located below the upper crushing rod 404. A lower bevel gear 407 is fixedly connected to the outer side of the outer cylinder 403, and an upper bevel gear 408 is connected to the outer side of the rotating shaft 405. Both the lower bevel gear 407 and the upper bevel gear 408 are located inside the outer casing 402. A torque motor 409 is connected to one side of the coal drop pipe 401 through a motor base. The output end of the torque motor 409 passes through the inner wall of the coal drop pipe 401 and the outer casing 402 and is connected to a side bevel gear 410. The side bevel gear 410 is meshed with the lower bevel gear 407 and the upper bevel gear 408 on one side.

[0034] In practice, the starting torque motor 409 drives the side bevel gear 410 to drive the lower bevel gear 407 and the upper bevel gear 408 to rotate in opposite directions. The lower bevel gear 407 drives the upper crushing rod 404 to drive the spiral strip 411 to rotate, scraping the coal powder on the inner wall of the coal drop pipe 401. The upper bevel gear 408 drives the rotating shaft 405 to drive the lower crushing rod 406 to rotate, cooperating with the upper crushing rod 404 to pry and crush the falling coal, so as to prevent the coal mill from getting clogged.

[0035] In summary: When using this coal mill classifier that can reduce the fineness of coal powder, firstly, the servo motor 14 is started to adjust the angle of the deflector plate 11, and the hydraulic rod 9 is started to adjust the distance between the grinding wheel 8 and the grinding disc 5 to control the required fineness of coal powder. Coal ore is added from the coal chute 401, and after being rotated and propelled by the upper crushing rod 404 and the lower crushing rod 406, and scraped by the spiral strip 411, it falls onto the grinding disc 5. The reduction motor in the base 1 drives the grinding disc 5 to rotate, centrifuging the coal ore and moving it to the ground wheel 8 for grinding. At the same time, the grinding disc 5 drives the pressure... Plate 604 moves up and down to crush the coal. The blower introduces hot air into the casing 2. The hot air blows upward from below the grinding disc 5 to dry the coal powder and lifts the fine coal powder. After being deflected by the deflector plate 11, the heavier coal powder impacts the surface of the coal drop pipe 401 and falls onto the grinding disc 5. The lighter coal powder is carried out from the powder outlet pipe 3 by the hot air. Large impurities that cannot be ground fall from the gaps at the edge of the grinding disc 5 and are scraped into the discharge pipe by the scraper and discharged. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal pulverizer capable of reducing the fineness of the coal, comprising: The base (1), the shell (2), the powder outlet pipe (3) and the feeding mechanism (4) are characterized in that; The upper surface of the base (1) is connected with the shell (2), the inner wall of the shell (2) is connected with the powder outlet pipe (3) above, the powder outlet pipe (3) is provided with the feeding mechanism (4), the upper surface of the base (1) is rotatably connected with the grinding disc (5) through the speed reducer, the upper surface of the grinding disc (5) is provided with the crushing mechanism (6), the inner wall of the shell (2) is slidably connected with the hanger (7), the bottom of the hanger (7) is connected with the grinding wheel (8), the grinding wheel (8) abuts against the grinding disc (5), the bottom of the hanger (7) away from the grinding wheel (8) is connected with the hydraulic rod (9), the hydraulic rod (9) is connected to the outer side of the shell (2), the inner wall of the shell (2) is connected with the cyclone barrel (10) through the support plate, the upper surface of the cyclone barrel (10) is rotatably connected with the deflection plate (11), the rotating shaft of the deflection plate (11) is connected with the spur gear (12) above the inner wall of the shell (2), one side of the spur gear (12) is meshingly connected with the external gear ring (13), the external gear ring (13) is rotatably connected to the upper surface of the shell (2), the upper surface of the shell (2) is connected with the servo motor (14) through the support, and the output end of the servo motor (14) is connected to the spur gear (12) through the shaft coupling. The crushing mechanism (6) comprises an annular shell (601), a piston shell (602), a lower piston rod (603), a pressing plate (604), a spring (605), an upper piston rod (606), a transmission plate (607), a disc (608), a horizontal bevel gear (609), a bevel gear ring (610) and a vertical plate (611), the inner wall of the shell (2) on one side near the upper surface of the grinding disc (5) is connected with the annular shell (601) through bolts, the bottom of the annular shell (601) is connected with the piston shell (602) through the support, the lower piston rod (603) is slidably connected to the inner wall of the piston shell (602), the bottom of the lower piston rod (603) is connected with the pressing plate (604), the pressing plate (604) abuts against the grinding disc (5), and the spring (605) is sleeved on the outer side of the pressing plate (604) and abuts against the inner wall of the piston shell (602).

2. The coal mill classifier capable of reducing the fineness of coal dust according to claim 1, characterized in that: The upper piston rod (606) is slidably connected to the inner wall of the piston shell (602), one side of the upper piston rod (606) is rotatably connected with the transmission plate (607), and one side of the transmission plate (607) is rotatably connected with the disc (608).

3. The coal pulverizing classifier capable of reducing the coal fineness according to claim 2, characterized in that: One side of the disc (608) is connected with the horizontal bevel gear (609), and the horizontal bevel gear (609) is rotatably connected to the inner wall of the annular shell (601).

4. The coal mill classifier capable of reducing the fineness of coal dust according to claim 3, characterized in that: The lower meshing connection of the bevel gear (609) is connected with a bevel gear ring (610), the bevel gear ring (610) is arranged in the annular shell (601), and the bottom of the bevel gear ring (610) is connected with a vertical plate (611), the vertical plate (611) is connected on the upper surface of the grinding disc (5) through bolts, and the outer side of the vertical plate (611) is connected with a sealing strip for sealing the gap of the annular shell (601).

5. The coal pulverizing classifier capable of reducing the coal fineness according to claim 1, characterized in that: The feeding mechanism (4) comprises a coal falling pipe (401), a shell (402), an outer cylinder (403), an upper crushing rod (404), a rotating shaft (405), a lower crushing rod (406), a lower bevel gear (407), an upper bevel gear (408), a torque motor (409), a side bevel gear (410) and a spiral strip (411), the inner wall of the powder outlet pipe (3) is connected with the coal falling pipe (401) through bolts, the inner wall of the coal falling pipe (401) is connected with the shell (402) through a support plate, the lower inner wall of the shell (402) is rotatably connected with the outer cylinder (403) through a bearing, the outer side of the outer cylinder (403) is connected with the upper crushing rod (404), the other end of the upper crushing rod (404) is connected with the spiral strip (411), and the spiral strip (411) abuts against the inner wall of the coal falling pipe (401).

6. The coal mill classifier capable of reducing the coal fineness according to claim 5, characterized in that: The rotating shaft (405) is rotatably connected in the outer cylinder (403), the outer side of the rotating shaft (405) is connected with the lower crushing rod (406), and the lower crushing rod (406) is arranged below the upper crushing rod (404).

7. The coal pulverizing classifier capable of reducing the coal fineness according to claim 6, characterized in that: The outer side of the outer cylinder (403) is fixedly connected with the lower bevel gear (407), the outer side of the rotating shaft (405) is connected with the upper bevel gear (408), and the lower bevel gear (407) and the upper bevel gear (408) are arranged in the shell (402).

8. The coal mill classifier capable of reducing the coal fineness according to claim 7, characterized in that: One side of the coal falling pipe (401) is connected with the torque motor (409) through a motor base, the output end of the torque motor (409) is connected with the side bevel gear (410) penetrating the inner walls of the coal falling pipe (401) and the shell (402), and the side bevel gear (410) is meshingly connected on one side of the lower bevel gear (407) and the upper bevel gear (408).

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