A double-layer partition plate for a ball mill with a circular automatic vibration mechanism

Abstract

The present invention relates to the technical field of ball mills, specifically a ball mill double-layer partition plate with a circumferential automatic vibrating mechanism, comprising a coarse grate plate, a fine screen plate, a front support plate and a rear support plate sequentially arranged in the cylinder of the ball mill along the feed direction, wherein a plurality of vibrating mechanisms are connected between the front support plate and the rear support plate; the vibrating mechanism comprises a first vibrating rod, a second vibrating rod, a connecting rod and a vibrating hammer, and when the cylinder rotates, the vibrating hammer rotates relative to the connecting rod under the action of gravity, thereby striking the first vibrating rod or the second vibrating rod, and the first vibrating rod or the second vibrating rod drives the coarse grate plate, the fine screen plate, the front support plate and the rear support plate to vibrate, and the through-porosity of the coarse grate plate and the fine screen plate is improved by vibration perpendicular to the feeding direction of the ball mill. The vibrating direction of the vibrating mechanism designed by the present invention is perpendicular to the material forward direction. When material particles leave the grate holes and the screen holes, the number of particles falling in the reverse direction is reduced, and the through-porosity of the coarse grate plate and the fine screen plate can be fully improved.

Description

Technical Field

[0001] The invention relates to the technical field of ball mills, in particular to a double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism. Background Art

[0002] A ball mill is a typical equipment for grinding materials. The device used to axially screen the material in a ball mill is a baffle plate. Baffle plates are classified into two categories: single-layer and double-layer. Double-layer baffle plates, with a coarse grate plate and a fine screen plate, better separate coarse and fine materials while also extending the life of the fine screen plate. However, double-layer baffle plates suffer from the problem of grate and screen holes being easily clogged by the grinding material. This clogged grate and screen holes reduces the ball mill's through-hole ratio, affecting grinding efficiency and ventilation within the mill.

[0003] In order to solve the problem of clogging of grate holes and sieve holes in double-layer partition plates, patent CN209697069U discloses an anti-clogging double-bin ball mill, which uses a vibrating arm to knock on the support plates on both sides to vibrate the support plates, thereby causing the materials blocked in the grate holes and sieve holes to fall, which effectively solves this problem. However, after research and analysis, it was found that the solution provided by patent CN209697069U has a certain bottleneck in its through-porosity. The main reason is that the vibration direction is opposite to the direction of material passage, and the particles blocked in the grate holes and sieve holes usually fall in the forward direction, resulting in a limited through-porosity. In view of this, the technical solution for the double-layer partition plates of the ball mill needs further improvement. Summary of the Invention

[0004] In response to the problems raised in the background technology, the purpose of the present invention is to propose a double-layer partition plate of a ball mill with a circumferential automatic vibrating mechanism. By improving the vibrating mechanism, the pass rate of the grate holes and the sieve holes can be fully improved, thereby improving the ventilation of the ball mill and improving the grinding efficiency of the ball mill.

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

[0006] A ball mill double-layer partition plate with an annular automatic vibrating mechanism, comprising a coarse grate plate, a fine screen plate, a front support plate and a rear support plate arranged in sequence in the cylinder of the ball mill along the feeding direction of the ball mill, the front support plate and the rear support plate are both annular frame plate structures, the front support plate and the rear support plate are spaced parallel and respectively fixed to the cylinder, the coarse grate plate and the fine screen plate are connected to the front support plate and perpendicular to the feeding direction of the ball mill, a plurality of vibrating mechanisms are connected between the front support plate and the rear support plate; the vibrating mechanism comprises a first vibrating rod, a second vibrating rod, a connecting rod and a vibrating hammer, the first vibrating rod The rod, the second vibrating rod and the connecting rod are all connected to the front support plate and the rear support plate, the vibrating hammer is rotatably connected to the connecting rod, and the rotating plane of the vibrating hammer is perpendicular to the feeding direction of the ball mill. The first vibrating rod and the second vibrating rod are respectively located on both sides of the connecting rod. When the cylinder rotates, the vibrating hammer rotates relative to the connecting rod under the action of gravity, thereby hitting the first vibrating rod or the second vibrating rod, and the coarse grate plate, fine screen plate, front support plate and rear support plate are driven by the first vibrating rod or the second vibrating rod to vibrate, and the through-porosity of the coarse grate plate and fine screen plate is improved by the vibration perpendicular to the feeding direction of the ball mill.

[0007] The axis of the connecting rod rotates around the central axis of the cylinder to form a rotation circle, and the first rapping rod and the second rapping rod are respectively located on the inner side and the outer side of the rotation circle.

[0008] The first rapping rod, the second rapping rod and the connecting rod are all hollow rods. The first rapping rod is connected to the coarse grate plate and the fine screen plate by a first bolt, the second rapping rod is connected to the coarse grate plate and the fine screen plate by a second bolt, and the connecting rod is connected to the coarse grate plate and the fine screen plate by a third bolt.

[0009] The rapping hammer includes a sleeve and a hammer body. The sleeve is rotatably hinged with the connecting rod. One end of the hammer body is fixedly connected to the middle of the sleeve. The length from the other end of the hammer body to the axis of the sleeve is L, and the distance from the center of mass of the hammer body to the axis of the sleeve is greater than L / 2.

[0010] The hammer body has a protruding striking head at one end away from the sleeve. The striking head is located on one side of the length direction of the hammer body, and the protruding direction of the striking head is consistent with the rotation direction of the rapping hammer.

[0011] The rear support plate is connected with a blind plate, and the blind plate is an annular plate.

[0012] A plurality of material lifting plates are evenly distributed between the front support plate and the rear support plate. The material lifting plates are arc-shaped plates, and the direction in which the arc surfaces thereof bulge is opposite to the rotation direction of the cylinder.

[0013] The hole in the middle of the front support plate is connected to a two-way material guide cone, and the two conical surfaces of the two-way material guide cone extend inward to both sides of the front support plate respectively.

[0014] An annular fixing seat is connected between the front supporting plate and the rear supporting plate, and the front supporting plate and the rear supporting plate are respectively connected to the cylinder through the fixing seat.

[0015] The present invention has the following beneficial effects: the vibration direction of the vibration mechanism designed in the present invention is perpendicular to the forward direction of the material. When the material particles leave the grate holes and the sieve holes, the number of particles falling in the opposite direction is reduced, and the through-porosity rate of the coarse grate plate and the fine sieve plate can be fully improved, thereby improving the ventilation of the ball mill and improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the present invention.

[0017] Figure 2 Schematic diagram of the distribution of the rapping mechanism in the double-layer partition plate in one embodiment of the present invention.

[0018] Figure 3 This is the operating principle diagram of a single rapping mechanism.

[0019] Figure 4 This is the right side view of the rapping hammer.

[0020] Figure 5 This is the front view of the rapping hammer.

[0021] In the figure, 1, cylinder, 2, coarse grate plate, 3, fine screen plate, 4, front support plate, 5, rear support plate, 6, first vibrating rod, 7, second vibrating rod, 8, connecting rod, 9, vibrating hammer, 10, lifting plate, 11, blind plate, 12, two-way guide cone, 13, fixing seat, 14, connecting bolt, 901, hammer body, 902, casing, 903, knocking head. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0023] In order to solve the problem of grate and sieve hole blockage in double-layer partition plate and improve through-hole filtration, Figure 1As shown, the present invention provides a ball mill double-layer partition plate with an annular automatic vibrating mechanism, comprising a coarse grate plate 2, a fine screen plate 3, a front support plate 4 and a rear support plate 5 sequentially arranged in the cylinder 1 of the ball mill along the feeding direction of the ball mill, the front support plate 4 and the rear support plate 5 are both annular frame plate structures, the front support plate 4 and the rear support plate 5 are spaced parallel and respectively fixed to the cylinder 1, the coarse grate plate 2 and the fine screen plate 3 are connected to the front support plate 4 and perpendicular to the feeding direction of the ball mill, and a plurality of vibrating mechanisms are connected between the front support plate 4 and the rear support plate 5; the vibrating mechanism comprises a first vibrating rod 6, a second vibrating rod 7, a connecting rod 8 and a vibrating hammer 9, the first vibrating rod 6 The beating rod 6, the second beating rod 7 and the connecting rod 8 are all connected to the front support plate 4 and the rear support plate 5. The rapping hammer 9 is rotatably connected to the connecting rod 8, and the rotation plane of the rapping hammer 9 is perpendicular to the feeding direction of the ball mill. The first rapping rod 6 and the second rapping rod 7 are respectively located on both sides of the connecting rod 8. When the cylinder 1 rotates, the rapping hammer 9 rotates relative to the connecting rod 8 under the action of gravity, thereby hitting the first rapping rod 6 or the second rapping rod 7, and the coarse grate plate 2, the fine screen plate 3, the front support plate 4 and the rear support plate 5 are driven by the first rapping rod 6 or the second rapping rod 7 to vibrate, and the through-porosity of the coarse grate plate 2 and the fine screen plate 3 is improved by the vibration perpendicular to the feeding direction of the ball mill.

[0024] The vibrating mechanism, installed between the double-layer partition plates, can vibrate cyclically throughout a 360-degree rotation as the ball mill's barrel 1 rotates. This vibration unclogs the grate and sieve holes. The vibrating mechanism utilizes radial vibration, with the vibration direction perpendicular to the material's forward direction. This vibration, perpendicular to the ball mill's feed direction, reduces the number of particles that fall in the opposite direction, effectively increasing the through-hole ratio of the coarse grate plate 2 and the fine sieve plate 3.

[0025] like Figure 2 As shown, in one embodiment of the present invention, four rapping mechanisms AD are provided between the front support plate 4 and the rear support plate 5 , and the four rapping mechanisms AD are evenly distributed in the annular space between the front support plate 4 and the rear support plate 5 .

[0026] like Figure 3 As shown, among the four positions ad, position b is the highest position and position d is the lowest position. The operating principle of a single rapping mechanism is as follows:

[0027] As the cylinder 1 rotates, the vibration mechanism rotates clockwise, passing through Figure 2 The four marked positions ad; position a is set as the starting point. At this position, the rapping hammer 9 is affected by gravity, and the line connecting its center of mass and the axis of the connecting rod 8 is a vertical straight line, and the center of mass is located below the axis of the connecting rod 8. At this time, the rapping hammer 9 is suspended in the air and can neither hit the first rapping rod 6 nor the second rapping rod 7.

[0028] In the process of the rapping mechanism rotating from position a to position b along with the cylinder 1, the center of mass of the rapping hammer 9 rotates around the axis of the connecting rod 8 due to the action of gravity, and the center of mass remains below the axis of the connecting rod 8. When it reaches position b, due to the inertia of the rapping hammer 9, it hits the second rapping rod 7 and vibrates. The vibration is transmitted to the front support plate 4 and the rear support plate 5 through the second rapping rod 7, driving the coarse grate plate 2 and the fine screen plate 3 to vibrate, thereby cleaning the grate holes and the screen holes.

[0029] When the rapping mechanism rotates from position b to position c along with the cylinder 1 , the rapping hammer 9 rests on the second rapping rod 7 due to the obstruction of the second rapping rod 7 and rotates to position c along with the second rapping rod 7 .

[0030] In the process of the rapping mechanism turning from position c to position d with the cylinder 1, for a period of time after passing position c, the rapping hammer 9 continues to rest on the second rapping rod 7. After reaching an extreme position, the rapping hammer 9 will break away from the second rapping rod 7 and rotate clockwise from the high point. The rapping hammer 9 obtains a certain amount of kinetic energy and hits the first rapping rod 6, causing vibration. The vibration is transmitted to the front support plate 4 and the rear support plate 5 through the first rapping rod 6, driving the coarse grate plate 2 and the fine screen plate 3 to vibrate, thereby cleaning the grate holes and the screen holes.

[0031] When the rapping mechanism rotates from position d to position a along with the cylinder 1 of the ball mill, the rapping hammer 9 is acted upon by gravity, and the line connecting its center of mass and the axis of the connecting rod 8 is still a vertical line, and the center of mass is located below the axis of the connecting rod 8.

[0032] From the above process, it can be seen that every time the cylinder 1 rotates one circle, a single rapping mechanism raps the first rapping rod 6 and the second rapping rod 7 once respectively. When the cylinder 1 rotates continuously, multiple rapping mechanisms circulate in it in turn to produce a rapping effect, cleaning the grate holes and sieve holes.

[0033] The axis of the connecting rod 8 rotates around the central axis of the cylinder 1 to form a rotation circle, and the first rapping rod 6 and the second rapping rod 7 are respectively located on the inner and outer sides of the rotation circle.

[0034] The first rapping rod 6, the second rapping rod 7 and the connecting rod 8 are all hollow rods. The first rapping rod 6 is connected to the coarse grate plate 2 and the fine screen plate 3 by a first bolt, the second rapping rod 7 is connected to the coarse grate plate 2 and the fine screen plate 3 by a second bolt, and the connecting rod 8 is connected to the coarse grate plate 2 and the fine screen plate 3 by a third bolt.

[0035] like Figure 4 、 Figure 5 As shown, the rapping hammer 9 includes a sleeve 902 and a hammer body 901. The sleeve 902 is rotatably hinged to the connecting rod 8. One end of the hammer body 901 is fixedly connected to the middle of the sleeve 902. The length from the other end of the hammer body 901 to the axis of the sleeve 902 is L, and the distance from the center of mass of the hammer body 901 to the axis of the sleeve 902 is greater than L / 2.

[0036] The hammer body 901 has a protruding striking head 903 at one end away from the sleeve 902 . The striking head 903 is located on one side of the hammer body 901 in the length direction, and the protruding direction of the striking head 903 is consistent with the rotation direction of the rapping hammer 9 .

[0037] The rear support plate 5 is connected to a blind plate 11 , which is an annular plate.

[0038] There are multiple lifting plates 10 evenly distributed between the front support plate 4 and the rear support plate 5. The lifting plates 10 are arc-shaped plates, and the direction of the arc surface protrusion is opposite to the rotation direction of the cylinder 1. The opening in the middle of the front support plate 4 is connected to a two-way guide cone 12, and the two conical surfaces of the two-way guide cone 12 extend inward to both sides of the front support plate 4. Figure 1 The left end of the coarse grate plate 2 is the feeding direction. The material passes through the coarse grate plate 2 and the fine screen plate 3. The fine material is lifted by the lifting plate 10 and falls onto the two-way guide cone 12 and falls into the next bin. The coarse material is brought back to the previous bin through the two-way guide cone 12.

[0039] An annular fixing seat 13 is connected between the front support plate 4 and the rear support plate 5, and the front support plate 4 and the rear support plate 5 are respectively connected to the cylinder 1 through the fixing seat 13. The fixing seat 13 is fixed to the cylinder 1 by connecting bolts 14. Specifically, the fixing seat 13 is connected to the inner wall of the cylinder 1 by bolts, and a rubber pad is provided between the fixing seat 13 and the cylinder 1 to isolate vibrations.

[0040] The parts not described in detail in this invention are prior art.

Claims

1. A double-layer partition plate for a ball mill with an annular automatic vibrating mechanism, comprising a coarse grate plate (2), a fine screen plate (3), a front support plate (4) and a rear support plate (5) arranged in sequence in a cylinder (1) of the ball mill along a feeding direction of the ball mill, wherein the front support plate (4) and the rear support plate (5) are both annular frame plate structures, the front support plate (4) and the rear support plate (5) are spaced parallel and respectively fixed to the cylinder (1), the coarse grate plate (2) and the fine screen plate (3) are connected to the front support plate (4) and perpendicular to the feeding direction of the ball mill, and the characteristics are: A plurality of rapping mechanisms are connected between the front support plate (4) and the rear support plate (5); the rapping mechanisms include a first rapping rod (6), a second rapping rod (7), a connecting rod (8) and a rapping hammer (9); the first rapping rod (6), the second rapping rod (7) and the connecting rod (8) are all connected to the front support plate (4) and the rear support plate (5); the rapping hammer (9) is rotatably connected to the connecting rod (8), and the rotation plane of the rapping hammer (9) is perpendicular to the feeding direction of the ball mill; the first rapping rod (6) and the second rapping rod (7) are connected to the front support plate (4) and the rear support plate (5); The beating rods (7) are respectively located on both sides of the connecting rod (8). When the cylinder (1) rotates, the rapping hammer (9) rotates relative to the connecting rod (8) under the action of gravity, thereby hitting the first rapping rod (6) or the second rapping rod (7). The first rapping rod (6) or the second rapping rod (7) drives the coarse grate plate (2), the fine screen plate (3), the front support plate (4) and the rear support plate (5) to vibrate, and the through-hole rate of the coarse grate plate (2) and the fine screen plate (3) is improved by the vibration perpendicular to the feeding direction of the ball mill.

2. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1 is characterized in that: The axis of the connecting rod (8) rotates around the central axis of the cylinder (1) to form a rotation circle, and the first rapping rod (6) and the second rapping rod (7) are respectively located on the inner side and the outer side of the rotation circle.

3. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1 is characterized in that: The first rapping rod (6), the second rapping rod (7) and the connecting rod (8) are all hollow rods; the first rapping rod (6) is connected to the coarse grate plate (2) and the fine screen plate (3) via a first bolt; the second rapping rod (7) is connected to the coarse grate plate (2) and the fine screen plate (3) via a second bolt; and the connecting rod (8) is connected to the coarse grate plate (2) and the fine screen plate (3) via a third bolt.

4. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1 is characterized in that: The rapping hammer (9) comprises a sleeve (902) and a hammer body (901), the sleeve (902) is rotatably hinged to the connecting rod (8), one end of the hammer body (901) is fixedly connected to the middle of the sleeve (902), the length from the other end of the hammer body (901) to the axis of the sleeve (902) is L, and the distance from the center of mass of the hammer body (901) to the axis of the sleeve (902) is greater than L / 2.

5. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 4 is characterized in that: The hammer body (901) has a protruding striking head (903) at one end away from the sleeve (902). The striking head (903) is located on one side of the length direction of the hammer body (901), and the protruding direction of the striking head (903) is consistent with the rotation direction of the rapping hammer (9).

6. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1, characterized in that: The rear support plate (5) is connected to a blind plate (11), and the blind plate (11) is an annular plate.

7. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1, characterized in that: A plurality of material lifting plates (10) are evenly distributed between the front support plate (4) and the rear support plate (5). The material lifting plates (10) are arc-shaped plates, and the direction in which the arc surfaces thereof bulge is opposite to the direction of rotation of the cylinder (1).

8. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1, characterized in that: A two-way material guide cone (12) is connected to the opening in the middle of the front support plate (4), and two conical surfaces of the two-way material guide cone (12) extend inwardly to both sides of the front support plate (4).

9. The double-layer partition plate of a ball mill with a circumferential automatic vibration mechanism according to claim 1, characterized in that: An annular fixing seat (13) is connected between the front support plate (4) and the rear support plate (5), and the front support plate (4) and the rear support plate (5) are respectively connected to the cylinder (1) via the fixing seat (13).

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