Anti-blocking device for ball mill

Abstract

The utility model relates to an anti-blocking device for a ball mill, which comprises a feeding pipe, a limiting ring, an arc plate and a transmission part, limiting rings are fixed to the upper end and the lower end of the inner wall of the feeding pipe correspondingly, an upper annular groove and a lower annular groove are formed in the opposite faces of the two limiting rings correspondingly, openings of the upper annular groove and the lower annular groove are opposite, and arc plates are arranged in the left portion and the right portion of the feeding pipe correspondingly. The upper end of the arc plate on the left side extends into the left portion of the upper annular groove in a sliding mode, the lower end of the arc plate on the left side extends into the left portion of the lower annular groove in a sliding mode, and the adjacent side edges of the two arc plates make contact with each other. The left and right ends of the gear I are respectively meshed with the left and right racks; the first gear is driven by a driving piece to rotate anticlockwise or clockwise. The utility model solves the problem that the proppant raw material is easy to block in the feed pipe of the ball mill when the proppant raw material is crushed.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverizing devices, in particular to an anti-blocking device for a ball mill. Background Art

[0002] The crushing of proppant raw materials refers to the refinement of the original proppant raw materials through mechanical equipment to obtain the required particle size and gradation. The finer the particle size of the crushed proppant, the stronger the fracture conductivity formed during the hydraulic fracturing process; the ball mill is a commonly used crushing equipment. The grinding media (such as steel balls or ceramic balls) in the ball mill produce friction and impact on the proppant raw materials, causing the raw materials to be gradually crushed.

[0003] The particle size of the proppant raw material is relatively large before entering the ball mill. When entering the ball mill through a feed pipe connected to the ball mill, the proppant raw material is prone to bridge and blockage in the feed pipe. The reason is that multiple pieces of proppant raw materials fed through the feed pipe at the same time squeeze each other and the inner wall of the feed pipe to form a balanced structure, which in turn causes blockage. The proppant raw material blocked in the feed pipe needs to be manually cleaned and unblocked, affecting the crushing efficiency of the proppant raw material. Summary of the invention

[0004] The utility model aims to solve the problem that the proppant raw material is easily blocked in the feed pipe of the ball mill when the proppant raw material is crushed, and provides an anti-blocking device for the ball mill, which can avoid the proppant raw material from being blocked in the feed pipe and improve the crushing efficiency.

[0005] In order to solve the above problems, the technical solution of the utility model is:

[0006] A ball mill anti-blocking device comprises a feed pipe, a limit ring, an arc plate and a transmission member; limit rings are fixed on the upper and lower ends of the inner wall of the feed pipe, and an upper annular groove and a lower annular groove are respectively provided on the opposite surfaces of the two limit rings, and the openings of the upper annular groove and the lower annular groove are opposite to each other, and arc plates are provided in the left and right parts of the feed pipe, and the upper end of the arc plate on the left side slides into the left part of the upper annular groove, and the lower end slides into the left part of the lower annular groove, and the adjacent sides of the two arc plates are in contact, and the transmission member comprises a rack and a gear one, and racks are vertically fixed to the front sides of the outer sides of the two arc plates, and a gear one is provided between the two racks, and the front side of the gear one is rotatably connected to the feed pipe via a rotating shaft, and the left and right ends of the gear one respectively mesh with the racks on the left and right sides; the gear one is driven by the driving member to rotate counterclockwise or clockwise.

[0007] Furthermore, the driving member includes gear 2, a motor and a fan ring plate. The front end of the rotating shaft passes through the feed pipe and is connected to gear 2. A torsion spring is provided on the rotating shaft sleeve outside the feed pipe. One end of the torsion spring is connected to the feed pipe and the other end is connected to gear 2. A motor is fixed on the outer wall of the feed pipe on the upper side of the rotating shaft. The output shaft of the motor faces forward and is connected to the fan ring plate. Teeth are provided on the outer ring surface of the fan ring plate. When the outer ring surface of the fan ring plate faces downward, the teeth on the fan ring plate mesh with gear 2.

[0008] Furthermore, when the torsion spring is in a natural state, there is a distance between the upper ends of the two arc plates and the upper ends of the upper annular groove, and there is a distance between the lower ends and the lower ends of the lower annular groove; and hemispherical protrusions are evenly distributed on the inner side of the arc plate between the two limit rings.

[0009] Furthermore, when the fan ring plate rotates clockwise until the teeth on the fan ring plate disengage from gear two, gear two rotates counterclockwise to an extreme state, the lower end of the arc plate on the left side contacts the bottom surface of the lower annular groove, and the upper end is higher than the lower end of the upper annular groove, the protrusion at the lower end of the arc plate on the left side is close to the lower limiting ring, the lower end of the arc plate on the right side is lower than the upper end of the lower annular groove, and the upper end contacts the top surface of the upper annular groove, and the protrusion on the upper end of the arc plate on the right side is close to the upper limiting ring.

[0010] Furthermore, elastic sheets are provided at intervals on the outer side surface of the arc plate on the left side, and a stopper is provided on the lower side of each elastic sheet, and the stopper is fixed on the inner wall of the feed pipe, and the outer end of the elastic sheet and the inner end of the corresponding stopper are opposite to each other up and down; when the gear 2 rotates counterclockwise to the limit state, the elastic sheet is lower than the stopper.

[0011] Furthermore, two elastic sheets are provided at intervals on the outer side surface of the arc plate on the right side, and two stoppers are provided on the upper side of each of the two elastic sheets. The two stoppers are fixed on the inner wall of the feed pipe, and the inner end of the two stoppers and the outer end of the corresponding two elastic sheets are opposite to each other up and down; when the two gears rotate counterclockwise to the limit state, the two elastic sheets are higher than the two stoppers.

[0012] Through the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model drives two arc plates to move in opposite directions up and down through a driving member via a transmission member, and protrusions are provided on the inner side surfaces of the two arc plates. It is difficult for the proppant raw material between the two arc plates and the inner walls of the two moving arc plates to form a balanced structure, thereby avoiding blockage caused by the proppant raw material between the two arc plates reaching a balance, and allowing the proppant raw material to be discharged smoothly.

[0014] When the two arc plates of the utility model move in opposite directions up and down, the elastic sheet 1 and the elastic sheet 2 will vibrate, and the vibration is transmitted to the two arc plates and the proppant raw material between the two arc plates, further avoiding the proppant raw material from forming a balance between the two arc plates, thereby avoiding blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the arc plate connected to the rack on the left side of the utility model;

[0017] Figure 3 It is a sectional front view of the utility model;

[0018] Figure 4 yes Figure 3 Sectional view at AA in the middle;

[0019] Figure 5 yes Figure 3 Cross-sectional view at the middle BB.

[0020] The numbers in the accompanying drawings are: 1, feed pipe, 2, limit ring, 3, arc plate, 4, upper annular groove, 5, lower annular groove, 6, rack, 7, gear one, 8, gear two, 9, motor, 10, fan ring plate, 11, torsion spring, 12, teeth, 13, protrusion, 14, elastic sheet one, 15, stopper one, 16, elastic sheet two, 17, stopper two, 18, rotating shaft. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0022] like Figure 1 to Figure 5 As shown, a ball mill anti-blocking device comprises a feed pipe 1, which is a circular tube body, and also comprises a limit ring 2, an arc plate 3 and a transmission member; the limit ring 2 is a circular ring body with an outer diameter corresponding to the inner diameter of the feed pipe 1, and the limit rings 2 are fixed on the upper and lower ends of the inner wall of the feed pipe 1, and an upper annular groove 4 and a lower annular groove 5 are respectively arranged on the opposite surfaces of the two limit rings 2, and the upper annular groove 4 and the lower annular groove 5 have the same shape and size, and the upper annular groove 4 and the lower annular groove 5 have openings facing each other, and arc plates 3 are arranged in the left and right parts of the feed pipe 1, and the two arc plates 3 are in a left-right symmetrical state, and the circular ring where the arc plates 3 are located and The circular ring where the upper annular groove 4 is located corresponds to the circular ring, the upper end of the arc plate 3 on the left side slides into the left part of the upper annular groove 4, and the lower end slides into the left part of the lower annular groove 5, and the adjacent sides of the two arc plates 3 are in contact. The transmission member includes a rack 6 and a gear 7. Racks 6 are vertically fixed to the front of the outer sides of the two arc plates 3. The two racks 6 are in a left-right symmetrical state. A gear 7 is provided between the two racks 6. The front side of the gear 7 is rotatably connected to the peripheral wall of the feed pipe 1 via a rotating shaft 18, and the left and right ends of the gear 7 respectively mesh with the racks 6 on the left and right sides; the gear 7 is driven by the driving member to rotate counterclockwise or clockwise.

[0023] The driving member includes gear 2 8, a motor 9 and a fan ring plate 10. The front end of the rotating shaft 18 passes through the feed pipe 1 and is connected to the gear 2 8. The rotating shaft 18 outside the feed pipe 1 is covered with a torsion spring 11. One end of the torsion spring 11 is connected to the feed pipe 1 and the other end is connected to the gear 2 8. The motor 9 is fixed to the outer wall of the feed pipe 1 on the upper side of the rotating shaft 18. The output shaft of the motor 9 faces forward and is connected to the fan ring plate 10. The outer ring surface of the fan ring plate 10 is provided with teeth 12. When the outer ring surface of the fan ring plate 10 faces downward, the teeth 12 on the fan ring plate 10 mesh with the gear 2 8.

[0024] When the torsion spring 11 is in a natural state, there is a distance between the upper end of the two arc plates 3 and the upper end of the upper annular groove 4, and there is a distance between the lower end and the lower end of the lower annular groove 5; the inner side surface of the arc plate 3 between the two limit rings 2 is evenly distributed with hemispherical protrusions 13.

[0025] The fan ring plate 10 rotates clockwise until the teeth 12 on the fan ring plate 10 disengage from the gear 2 8, and the gear 2 8 rotates counterclockwise to the limit state, the lower end of the arc plate 3 on the left side contacts the inner bottom surface of the lower annular groove 5, and the upper end is higher than the lower end of the upper annular groove 4, the protrusion 13 at the lower end of the arc plate 3 on the left side is close to the lower limit ring 2, the lower end of the arc plate 3 on the right side is lower than the upper end of the lower annular groove 5, and the upper end contacts the inner top surface of the upper annular groove 4, and the protrusion 13 at the upper end of the arc plate 3 on the right side is close to the upper limit ring 2.

[0026] On the outer side surface of the arc plate 3 on the left side, elastic sheets 14 are arranged at intervals in the annular direction of the outer side surface of the arc plate 3, and a stopper 15 is arranged on the lower side of each elastic sheet 14, and the stopper 15 is fixed on the inner wall of the feed pipe, and the outer end of the elastic sheet 14 and the inner end of the corresponding stopper 15 are opposite to each other up and down; when the gear 2 8 rotates counterclockwise to the limit state, the elastic sheet 14 is lower than the stopper 15.

[0027] On the outer side surface of the arc plate 3 on the right side, elastic sheets 16 are arranged at intervals in the annular direction of the outer side surface of the arc plate 3, and each elastic sheet 16 is provided with a stopper 17 on the upper side. The stopper 17 is fixed on the inner wall of the feed pipe, and the inner end of the stopper 17 and the outer end of the corresponding elastic sheet 16 are opposite to each other up and down; when the gear 8 rotates counterclockwise to the limit state, the elastic sheet 16 is higher than the stopper 17.

[0028] The elastic sheet 1 and the elastic sheet 2 are both sheet-shaped bodies made of spring steel material.

[0029] When in use, the lower end of the feed pipe 1 is connected to the ball mill. In the initial state, the torsion spring 11 is in a natural state; the proppant raw material enters between the two arc plates 3 through the upper end opening of the feed pipe 1, and the motor 9 is started, and the motor 9 drives the fan ring plate 10 to rotate clockwise (the clockwise rotation of the fan ring plate 10 is Figure 1The main viewing angle), when the fan ring plate 10 rotates clockwise, the teeth 12 on the fan ring plate 10 mesh with the gear 2 8, driving the gear 2 8 to rotate counterclockwise (the gear 2 8 rotates counterclockwise for Figure 1 , the torsion spring 11 is twisted, the gear 2 8 drives the gear 1 7 to rotate counterclockwise via the rotating shaft 18, the teeth 12 at the left end of the gear 1 7 mesh with the rack 6 on the left side to move downward, the rack 6 on the left side drives the arc plate 3 on the left side to move downward, the teeth 12 at the right end of the gear 1 7 mesh with the rack 6 on the right side to move upward, the rack 6 on the right side drives the arc plate 3 on the right side to move upward, when the teeth 12 on the fan ring plate 10 disengage from the gear 2 8, under the restoring force of the torsion spring 11, the gear 2 8 and the gear 1 7 return to the initial state clockwise, and in the process of the gear 1 7 returning to the initial state clockwise, the arc plate 3 on the left side is driven to return to the initial state upward, and the arc plate 3 on the right side is driven to return to the initial state downward. Therefore, in the process of the motor 9 driving the fan ring plate to rotate, the arc plates 3 on the left and right sides continuously move up and down in opposite directions, and the inner side surfaces of the two arc plates 3 are provided with protrusions 13, and it is difficult to form a balanced structure between the proppant raw material between the two arc plates 3 and the inner walls of the two moving arc plates 3. This prevents the proppant raw materials between the two arc plates 3 from reaching equilibrium and causing blockage;

[0030] Moreover, when the arc plate 3 on the left side moves downward, the outer end of the elastic sheet 14 is blocked by the inner end of the opposite block 15 on the lower side, and the elastic sheet 14 bends. After breaking away from the block 15, the elastic sheet 14 returns to its natural state, which will generate vibration. When the arc plate 3 on the left side moves upward, the outer end of the elastic sheet 14 is blocked by the inner end of the opposite block 15, and the elastic sheet 14 bends. After breaking away from the block 15, the elastic sheet 14 returns to its natural state, which will also generate vibration. The vibration is transmitted to the arc plate 3 on the left side and the proppant raw material on the inner side of the arc plate 3, further avoiding blockage; similarly, when the arc plate 3 on the right side moves upward or downward, the vibration generated by the elastic sheet 2 16 is transmitted to the arc plate 3 on the right side and the proppant raw material on the inner side of the arc plate 3, which can also avoid blockage.

[0031] The preferred implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the above-mentioned embodiments. Without violating the spirit of the present invention, i.e., the disclosure scope, any equivalent or equivalent deformation or replacement of the technical solution of the present invention shall fall within the protection scope of the present invention.

Claims

1. A ball mill anti-blocking device, comprising a feed pipe (1), characterized in that: It also includes a limit ring (2), an arc plate (3) and a transmission member; the upper and lower ends of the inner wall of the feed pipe (1) are fixed with limit rings (2); the two limit rings (2) are respectively provided with an upper annular groove (4) and a lower annular groove (5) on the opposite surfaces; the upper annular groove (4) and the lower annular groove (5) are opened opposite to each other; the left and right parts of the feed pipe (1) are both provided with arc plates (3); the upper end of the arc plate (3) on the left side slides into the left part of the upper annular groove (4), and the lower end slides into the lower annular groove (5) ), the adjacent sides of the two arc plates (3) are in contact with each other, the transmission member comprises a rack (6) and a gear one (7), the outer front sides of the two arc plates (3) are vertically fixed with a rack (6), a gear one (7) is arranged between the two racks (6), the front side of the gear one (7) is rotatably connected to the feed pipe (1) via a rotating shaft (18), and the left and right ends of the gear one (7) respectively mesh with the racks (6) on the left and right sides; the gear one (7) is driven by the driving member to rotate counterclockwise or clockwise.

2. The anti-blocking device for a ball mill according to claim 1, characterized in that: The driving member comprises a second gear (8), a motor (9) and a fan ring plate (10); the front end of the rotating shaft (18) passes through the feed pipe (1) and is connected to the second gear (8); a torsion spring (11) is provided on the outer sleeve of the rotating shaft (18) outside the feed pipe (1); one end of the torsion spring (11) is connected to the feed pipe (1) and the other end is connected to the second gear (8); a motor (9) is fixed to the outer wall of the feed pipe (1) on the upper side of the rotating shaft (18); the output shaft of the motor (9) faces forward and is connected to the fan ring plate (10); teeth (12) are provided on the outer ring surface of the fan ring plate (10); when the outer ring surface of the fan ring plate (10) faces downward, the teeth (12) on the fan ring plate (10) mesh with the second gear (8).

3. The anti-blocking device for a ball mill according to claim 2, characterized in that: When the torsion spring (11) is in a natural state, there is a distance between the upper ends of the two arc plates (3) and the upper end of the upper annular groove (4), and there is a distance between the lower ends and the lower end of the lower annular groove (5); and hemispherical protrusions (13) are evenly distributed on the inner side surface of the arc plate (3) between the two limiting rings (2).

4. The anti-blocking device for a ball mill according to claim 3, characterized in that: The fan ring plate (10) rotates clockwise until the teeth (12) on the fan ring plate (10) are disengaged from the gear 2 (8), and the gear 2 (8) rotates counterclockwise to the limit state, the lower end of the arc plate (3) on the left side contacts the inner bottom surface of the lower annular groove (5), and the upper end is higher than the lower end of the upper annular groove (4), the protrusion (13) at the lower end of the arc plate (3) on the left side is close to the lower limit ring (2), the lower end of the arc plate (3) on the right side is lower than the upper end of the lower annular groove (5), and the upper end contacts the inner top surface of the upper annular groove (4), and the protrusion (13) at the upper end of the arc plate (3) on the right side is close to the upper limit ring (2).

5. The anti-blocking device for a ball mill according to claim 4, characterized in that: The outer side surface of the arc plate (3) on the left side is provided with elastic sheets (14) at intervals, and a stopper (15) is provided on the lower side of each elastic sheet (14). The stopper (15) is fixed on the inner wall of the feed pipe, and the outer end of the elastic sheet (14) and the inner end of the corresponding stopper (15) are opposite to each other in vertical direction; when the gear (8) rotates counterclockwise to the limit state, the elastic sheet (14) is lower than the stopper (15).

6. The anti-blocking device for a ball mill according to claim 4, characterized in that: The outer side surface of the arc plate (3) on the right side is provided with two elastic sheets (16) at intervals, and each elastic sheet (16) is provided with a stopper (17) on the upper side, and the stopper (17) is fixed on the inner wall of the feed pipe, and the inner end of the stopper (17) and the outer end of the corresponding elastic sheet (16) are vertically opposite to each other; when the gear (8) rotates counterclockwise to the limit state, the elastic sheet (16) is higher than the stopper (17).

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