JP2007319777A - Liner, transversely setting type cylindrical mill, and method for discharging pulverized product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To keep sufficient surface area for passing a pulverized product and provide a liner capable of preventing damages of the liner. <P>SOLUTION: The liner 40' is formed in a circular or disk like formed when being installed along the inner wall of a drum 20 and is provided with discharge ports 48 and 48 formed in a side wall part 46 of a second pulverizing chamber of the liner 40' and intake ports 47 and 47 formed in a side wall part 45 of a first pulverizing chamber toward the inner wall of the drum 20 via a communication channel 49 communicated to the discharge ports 48 and 48. The intake ports 47 and 47 are projected from a circumferential rim part 45a along the inner wall of the drum 20 toward the side wall part 45 of the pulverizing chamber of the liner 40' and formed in a step part 45b formed at a distance from the inner wall of the drum 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a liner for partitioning each chamber of a multi-chamber type crushing device, a horizontal cylinder mill, and a method for discharging crushed material by the crushing device.

Generally, a horizontal cylinder mill is suitably used for crushing ores. Here, a conventional horizontal cylindrical mill 100 will be described with reference to the drawings. In the drawings to be referred to, FIG. 8A is a sectional view of a conventional horizontal cylindrical mill, and FIG. 8B is a partially enlarged view of FIG. As shown in FIG. 8A, a horizontal cylindrical mill 100 corresponding to the horizontal cylindrical mill of the present invention has a cylindrical drum 120 that is driven to rotate about a horizontal axis, and the interior of the drum 120 The space is partitioned by the liner 140 into a first crushing chamber 130 and a second crushing chamber 150 corresponding to the crushing chamber in the present invention. In addition, a trommel 160 that communicates from the second crushing chamber 150 and sifts the crushed material C that has passed through the second crushing chamber 150 while being rotationally driven around the horizontal axis into the product A and the other (Trommel over TO) is the first. 2 provided in the crushing chamber 150.
Further, the horizontal cylindrical mill 100 is provided with a cylindrical raw material supply unit 110, one of which opens to the outside and the other of which opens into the first crushing chamber.

  The liner 140 is provided inside the drum 120 in a direction perpendicular to the axis, and is provided so as to partition the drum 120 into a first crushing chamber 130 and a second crushing chamber 150. The crushed material C is discharged to the second crushing chamber 150 from a plurality of openings S that pass through the liner 140 in the axial direction.

  The first crushing chamber 130 is filled with a plurality of rod rods R made of steel, and the second crushing chamber 150 is filled with a plurality of steel balls B.

The horizontal cylinder mill 100 configured as described above operates as follows.
The raw material M is introduced into the first crushing chamber 130 from the raw material supply unit 110, and the drum 120 is rotationally driven by a rotation driving device (not shown). The rod R in the first crushing chamber 130 is rotated by this rotation. The drum 120 is lifted in the rotational drive direction by a lifter (not shown) provided on the inner wall of 130. Then, when the surface of the lifter (not shown) on which the rod R is placed is tilted toward the lower side of the drum 120, the rod R falls by gravity, and the material M is crushed by the impact of the fall to obtain a crushed material C. ing.

  At this time, since the rod R is disposed substantially parallel to the axial direction in the first crushing chamber 130, the crushed material C is accumulated in the lower portion in the first crushing chamber 130 by the rotating operation, while the rod R is It always lies on the crushed material C.

  In this manner, the crushed material C roughly crushed by the rod R passes through the opening S of the liner 140 and is sent into the second crushing chamber 150. Also in the second crushing chamber 150, as in the first crushing chamber 130, the ball B is lifted in the rotation driving direction of the drum 120 by the lifter (not shown) by the rotation drive of the drum 120, and the lifter (not shown) moves downward. Ball B falls when it faces, and by this impact, crushed material C is further finely crushed and the particle shape and size of crushed material C are adjusted.

Then, the crushed material C whose grain shape and size are adjusted passes through a net portion provided in the central portion of the end wall of the second crushing chamber 150 and is sent to the trommel 160. The crushed material C is classified into the product A that satisfies a predetermined standard and the other products by rotating the trommel 160. Then, the product A that has passed through the mesh of the trommel 160 is collected by a product A collecting means (not shown). On the other hand, the products other than the product A are not dropped in the plane of the trommel 160 and are directly discharged from the end of the trommel 160 to the outside.
JP 2004-154720 A

However, when crushing is performed in this way, inside the first crushing chamber 130, the large-diameter raw material M that is not sufficiently crushed or crushed on the raw material supply unit 110 side of the first crushing chamber 130. However, the crushed small-diameter C after crushing tends to accumulate on the second crushing chamber 150 side.
For this reason, in the inside of the 1st crushing chamber 130, these accumulations (raw material M and crushing material C) incline so that it may become low toward the 2nd crushing chamber 150 side from the raw material supply part 110 side. Become. And the rod R located on this accumulation also inclines so that it may become low toward the 2nd crushing chamber 150 side from the raw material supply part 110 side.

When the rod R moves to the liner 140 side on the accumulation and hits the liner 140 due to such an inclination, the opening S may be blocked by the rod R as shown in FIG. For this reason, the passage area of the crushed material C may not be sufficiently secured.
Further, when the rod R moves to the liner 140 side and hits the liner 140, the impact S may cause the opening S of the liner 140 to be crushed and closed.

  The present invention has been made in view of the above problems, and a liner capable of ensuring a sufficient passage area for crushed material and preventing damage to the opening of the liner, a crushing apparatus including the liner, and a crushing device It aims at providing the discharge method of a thing.

  The present invention for solving the above problems is used in a horizontal cylindrical mill having a crushing chamber in a drum rotating around a horizontal rotation axis, and is located at an end of the crushing chamber and accommodated in the crushing chamber. A liner for sending a crushed material crushed by a crushed medium to the outside of the crushing chamber, wherein the liner is provided in an annular shape or a disk shape when installed along the inner wall of the drum. And a discharge port formed on the downstream side surface of the liner, and an intake port formed toward the inner wall of the drum on the upstream side surface of the liner via a communication path communicating from the discharge port, The intake port is provided in a stepped portion that protrudes from the peripheral portion along the inner wall of the drum to the upstream side surface of the liner and is spaced apart from the inner wall of the drum.

  According to the liner of the present invention, when installed in the drum, it becomes an annular or disk-shaped liner body, and the inlet of the liner is provided so as to open facing the inner wall of the drum. The intake port does not come into contact with the crushing medium, and the crushing medium does not block the intake port. For this reason, the passage area of the crushed material can be secured sufficiently, and excessive crushing can be prevented.

  In the present invention, when the liner is installed in the drum, a guide portion is formed on the upstream side surface so as to be inclined radially from the center side of the rotation axis toward the inner wall side of the drum. The inclination of the guide portion may be formed as an inclination that guides the crushing medium in a direction away from the liner.

  According to the liner of the present invention, since the guide portion is formed as an inclination that guides the crushing medium in a direction away from the liner when installed in the drum, the drum rotates when used as a liner body. Accordingly, the crushing medium that has moved to the liner side can be pushed back in the opposite direction to the liner. For this reason, damage to the liner due to the crushing medium hitting the liner can be prevented.

  In the present invention, the liner includes an inclination in the step portion, and the inclination is separated from the inner wall of the drum from the downstream side surface to the upstream side surface of the liner when installed in the drum. It may be inclined.

  According to the liner of the present invention, the slope of the stepped portion is formed away from the inner wall of the drum from the downstream side surface toward the upstream side surface when installed in the drum. The crushing medium that has moved to the liner side with the rotation of the drum can be pushed back in the opposite direction to the liner. For this reason, damage to the liner due to the crushing medium entering between the stepped portion and the inner wall of the drum and being caught can be prevented.

  In the present invention, the communication passage may have an opening area that increases from the intake port toward the discharge port.

  According to the liner of the present invention, since the opening area of the communication passage increases from the intake port toward the discharge port side, the crushed material taken into the intake port moves toward the discharge port side through the communication passage. It can pass smoothly. For this reason, it can make it hard to clog a communicating path.

  The horizontal cylinder mill of the present invention may include the liner according to any one of claims 1 to 5 in the drum.

  According to the horizontal cylindrical mill of the present invention, since the inlet of the liner is provided so as to open facing the inner wall of the drum, the inlet does not come into contact with the crushing medium, and the crushing medium is removed. Does not block the entrance. For this reason, the passage area of the crushed material can be sufficiently secured.

  The horizontal cylindrical mill according to the present invention includes a first drum having a first crushing chamber as the crushing chamber, and a second crushing of the crushed material crushed in the first crushing chamber or adjusting the particle shape. A second drum having a crushing chamber, and a rib projecting annularly from the inner wall position of the drum toward the inside of the drum, and the liner fixed to the rib. And a connecting mechanism that detachably connects the first drum and the second drum to which the liner is fixed.

  According to the horizontal cylindrical mill of the present invention, the first drum and the second drum are detachably connected by the connection mechanism, and the liner is connected by being bolted to the rib of the second drum. By opening the mechanism, the second drum can be separated from the first drum side along with the liner. For this reason, the workability | operativity at the time of liner replacement | exchange of a horizontal cylinder mill can be improved.

  Further, the horizontal cylindrical mill of the present invention is a horizontal cylindrical mill provided with a liner that partitions a crushing chamber in a drum that rotates about a horizontal rotation axis and that sends a crushed material crushed to an adjacent crushing chamber. The drum is a first crushing chamber for producing a crushed material by crushing a raw material with a first crushing medium, and the crushed material crushed in the first crushing chamber adjacent to the first crushing chamber. A second crushing chamber that performs additional crushing or particle shape adjustment by a second crushing medium, and the liner is provided in an annular shape or a disk shape along the inner wall of the drum, and the downstream side surface of the liner A discharge port formed along the circumferential direction, and an intake port formed along the circumferential direction toward the inner wall of the drum on the upstream side surface of the liner via a communication path communicating from the discharge port; The intake is on the inner wall of the drum From cormorants periphery, with projecting upstream side of said liner, characterized by providing the stepped portion which is spaced apart from the inner wall of the drum.

  According to the horizontal cylindrical mill of the present invention, when the raw material is put into the first crushing chamber, the first crushing medium is rotated along with the rotation of the drum and falls by gravity to crush the raw material. Then, the horizontal cylindrical mill sends the crushed crushed material from the inlet of the liner provided toward the inner wall of the drum to the second crushing chamber from the discharge port through the communication path. At this time, since the inlet of the liner is formed on the upstream side surface along the circumferential direction toward the inner wall of the drum, the inlet does not contact the crushing medium, and the crushing medium blocks the inlet. There is no. For this reason, the passage area of the crushed material can be sufficiently secured.

  Moreover, the discharge method of the crushing material of this invention is equipped with the liner as described in any one of Claim 1-5, A crushing chamber is a 1st crushing chamber and a 2nd crushing in a drum via the said liner. A method for discharging crushed material in a horizontal cylindrical mill partitioned into chambers, comprising an introduction step, a first crushing step, and a discharge step.

  In the method for discharging the crushed material of the present invention, the material to be crushed is introduced into the first crushing chamber in the drum by the introducing step, and the material in the first crushing chamber is previously stored by the rotation of the drum by the first crushing step. The crushed material crushed through the medium and crushed in the first crushing chamber by the discharge step is taken from the inlet formed toward the inner wall of the drum on the upstream side surface of the liner partitioning the first crushing chamber. From the discharge port opened on the downstream side surface of the liner through the communication passage communicated from to the second crushing chamber adjacent to the first crushing chamber.

According to the liner according to the present invention, it is possible to sufficiently secure the passage area of the crushed material and to prevent the raw material from being crushed excessively.
Further, it is possible to prevent the crushing medium from damaging the liner. Further, the liner can be prevented from being damaged due to the crushing medium caught between the step portion and the drum. And manufacture and maintenance of a liner become easy by manufacturing for every block.

  Further, according to the horizontal cylindrical mill according to the present invention, since the liner is provided so that the intake port opens toward the inner wall of the drum when installed in the drum, the intake port is crushed by hitting the crushing medium. Can be prevented from being blocked

  Moreover, according to the discharge method of the crushed material of this invention, the passage area of a crushed material can fully be ensured, and a crushed material can be discharged | emitted smoothly from the crushing chamber to the adjacent crushing chamber.

  Next, an embodiment of a liner according to the present invention used in a horizontal cylinder mill will be described with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 1 is a cross-sectional view of a horizontal cylindrical mill in which the liner of the present invention is used. 2 is a diagram showing the liner body shown in FIG. 1 as a single unit, (a) is a front view showing the entire structure of the liner body, (b) is an enlarged view of the liner in (a), ( c) is a BB cross-sectional view of (b). 3A and 3B are three-dimensional perspective views of the liner shown in FIG.

  As shown in FIG. 1, the horizontal cylindrical mill 1 includes a raw material supply unit 10 for introducing a raw material M, a drum 20 to which the raw material supply unit 10 is attached, and a trommel 60 connected to the drum 20. It mainly has and is mounted on the mounting table 2. In the following description, the raw material supply unit 10 side is the upstream side, and the trommel 60 side is the downstream side.

  The raw material supply unit 10 has a cylindrical shape, and one end side is open to the outside, and the other end side is attached so that the raw material M can be introduced into the supply unit 21 of the drum 20, and is mounted on the mounting table 2 via the pedestal 11. It is placed.

  The drum 20 is formed in a cylindrical shape surrounded by a supply portion side wall portion 22 having a supply portion 21 at one end of the cylindrical drum 20 and a discharge portion side wall portion 24 having a discharge portion 23 at the center. ing. Further, a ring 25 formed in a ring shape protruding from the drum 20 is disposed on the outer periphery of the drum 20 so as to be appropriately separated in the longitudinal direction. The wheel 25 is in contact with a driving tire 3 that is driven by a driving device (not shown) fixed to the mounting table 2, and transmits the rotational force of the driving tire 3 to the drum 20.

  The supply unit 21 is provided so as to protrude outward from the supply unit side wall 22 as a substantially circular opening. The raw material M input from the raw material supply unit 10 is supplied from the supply unit 21 into a substantially cylindrical crushing chamber (corresponding to a “first crushing chamber”) 30.

  A substantially disc-shaped liner body 40 is disposed on the drum 20 so as to be orthogonal to the horizontal axis of the drum 20. The liner body 40 located at the downstream end of the first crushing chamber 30 allows the inside of the drum 20 to extend in the longitudinal direction with the first crushing chamber 30 and a substantially cylindrical crushing chamber (corresponding to a “second crushing chamber”) 50. It is divided into and.

The first crushing chamber 30 is formed by being surrounded by the supply unit side wall portion 22 having the supply unit 21, the liner body 40, and the inner wall of the drum 20. A plurality of rods R are accommodated in the first crushing chamber 30 in the horizontal axis direction of the drum 20, and the raw material M is crushed by the rods R.
Here, the rod R contains, for example, a plurality of rod-shaped members having diameters of 90 mm and 75 mm, and a plurality of types are used in combination corresponding to the hardness and size of the raw material M. Note that the rod R can be appropriately changed to a diameter different from the above-mentioned diameter, and may be a single type. The length of the rod R corresponding to the length of the first crushing chamber 30 is used that is formed slightly shorter than the length of the first crushing chamber 30.

  The first crushing chamber 30 has lifters (not shown) provided on a protective liner (not shown) projecting toward the inside of the first crushing chamber 30 at appropriate intervals on the inner wall of the first crushing chamber 30. Along with this, the rod R is lifted in the rotation direction, and then naturally dropped.

As shown in FIG. 2A, the liner body 40 has, for example, a liner 40 'arranged in an annular shape and has a net-like passage hole 41 in the center. The liner body 40 may be formed in a disk shape by arranging a liner (not shown) formed in a fan shape.
Further, as shown in FIG. 2A, the liner body 40 is directed to the inside of the second crushing chamber 50 by the bolt 7 in a state where, for example, 12 liners 40 ′ having the same shape are connected around the passage hole 41. It is connected to a rib 51 which will be described later and is formed in an annular shape. The number of liners 40 'can be changed as appropriate.

  As shown in FIGS. 2B and 2C, the liner 40 ′ includes an inner peripheral end face 42 formed in an arc shape along the passage hole 41 (see FIG. 2A), and the first crushing chamber 30. And a peripheral edge 45a formed in an arc shape along the inner wall (see FIG. 1), and both side edges on the side in contact with another adjacent liner 40 'are formed in a straight line. Further, the liner body 40 is provided with a center rib 44 that passes through the center portion of the liner 40 ′, thereby increasing the strength of the liner body 40.

As shown in FIGS. 2B, 2C, and 3A, the liner 40 ′ further protrudes from the peripheral portion 45a toward the first crushing chamber 30, and the drum 20 (see FIG. 1). A step portion 45b that is inclined so as to be separated from the inner wall. The step portion 45b pushes back the rod R (see FIG. 1) that has moved to the liner body 40 side toward the supply portion 21 (see FIG. 1), and the rod R (see FIG. 1) moves to the step portion 45b and the first crushing chamber 30. (See FIG. 1).
Further, as shown in FIG. 2C, the step 45b is formed such that the angle α formed by the step 45b and the horizontal line is 0 ° to 45 °, preferably 15 ° to 45 °. Yes.

  A first crushing chamber side wall portion (corresponding to an “upstream side surface”) 45 facing the first crushing chamber 30 (see FIG. 1) side of the liner body 40 is a peripheral edge from the center side of the annular liner body 40. It has the guide part 45c which inclines in the direction away from the 1st crushing chamber side wall part 45 toward the part 45a side, and supplies the rod R (refer FIG. 1) which has moved to the liner body 40 side to the supply part 21 side. (Refer to FIG. 1) A flat plate surface 45d is interposed between the stepped portion 45b and the guide portion 45c.

  Further, the stepped portion 45 b is provided with intake ports 47, 47 formed by cutting out part of the stepped portion 45 b with the center rib 44 interposed therebetween. The intake ports 47 and 47 open toward the inner wall of the drum 20 and take in the crushed material C (see FIG. 1). The intake ports 47 and 47 are preferably formed with a width of 100 mm and a height from the inner wall of the drum 20 to the opening of about 30 mm, for example.

  Further, as shown in FIG. 2C and FIG. 3B, the second crushing chamber side wall portion (corresponding to the “downstream side surface”) 46 facing the second crushing chamber 50 side of the liner body 40 includes: Discharge ports 48 and 48 formed by hollowing out a part thereof are provided with a center rib 44 (see FIG. 2B) interposed therebetween.

  Further, as shown in FIG. 2C, the liner body 40 has a communication path 49 that connects the intake ports 47 and 47 and the discharge ports 48 and 48, and the communication path 49 is the first crushing chamber 30. (Refer FIG. 1) and the 2nd crushing chamber 50 (refer FIG. 1) are connected.

Further, as shown in FIG. 2C, the communication passage 49 is formed such that the opening dimension b of the discharge ports 48, 48 is larger than the opening dimension a of the intake ports 47, 47. More specifically, it is desirable that the opening dimension b is 1 mm or more wider than the opening dimension a.
The crushed material C taken from the intake ports 47 and 47 passes through the communication passage 49 and is discharged from the discharge ports 48 and 48 to the second crushing chamber 50 (see FIG. 1).
When the liner 40 ′ thus formed is an annular liner body 40 as shown in FIG. 1 and FIG. 2A, the intake ports 47, 47 are intermittent along the circumferential direction at the stepped portion 45 b. In addition, the discharge ports 48 and 48 are formed so as to be substantially continuous along the circumferential direction.

Returning again to FIG. As shown in FIG. 1, the second crushing chamber 50 is formed to be surrounded by the liner body 40, the discharge portion side wall portion 24 having the discharge portion 23, and the inner wall of the drum 20.
A plurality of types of steel balls B are accommodated in the second crushing chamber 50, and the crushed material C is crushed by the balls B. The ball B may be a single type.

  In the second crushing chamber 50, lifters (not shown) provided on a protective liner (not shown) projecting toward the inside of the second crushing chamber 50 are formed on the inner wall at an appropriate interval so that the drum 20 rotates. Accordingly, the ball B is configured to be lifted in the rotation direction.

  The second crushing chamber 50 has an annular rib 51 that rises perpendicularly to the inner wall of the second crushing chamber 50 on the liner body 40 side. The rib 51 is formed so that the ball B does not move to the vicinity of the discharge ports 48 and 48 (mainly see FIG. 3) of the liner body 40 and block the discharge ports 48 and 48 (mainly see FIG. 3). The height between 51 and the liner body 40 is formed so as to be narrower than the diameter of the ball B, and the movement of the ball B is restricted and the liner body 40 is fixed.

The discharge part 23 is configured by attaching a net for preventing the ball B from jumping out from both wall sides to an opening provided in a substantially central part of the discharge part side wall part 24 of the second crushing chamber 50.
Then, the crushed material C whose particle shape is adjusted in the second crushing chamber 50 passes over the discharge part 23 and passes through the discharge part 23 and is sent out to the trommel 60.

  The trommel 60 is screened into the product A and the trommel over TO that satisfy a predetermined standard for the crushed material C in the second crushing chamber 50.

  On the lower side of the trommel 60, the product A collecting means 4 is provided, and the product A that has passed through the trommel 60 is collected in the product A collecting means 4.

  Further, the trommel over TO that has not passed through the trommel 60 is discharged from the end portion 62 of the trommel 60 to the outside from the trommel over discharge portion 63.

A method for discharging the crushed material C crushed by the horizontal cylindrical mill 1 configured as described above will be described below.
FIG. 4 is a cross-sectional perspective view of a horizontal cylinder mill, FIG. 5 is an exploded cross-sectional perspective view of the liner body shown in FIG. 4 viewed from the second crushing chamber side, and FIG. It is an expanded sectional view showing signs that crushed material is discharged.

  As shown in FIG. 4, the raw material M carried on the belt conveyor VC is sent so as to fall toward the raw material supply unit 10, passes through the internal passage of the raw material supply unit 10, and passes through the drum 20. It is introduced into the first crushing chamber 30 from the supply unit 21. At this time, in the horizontal cylindrical mill 1, the driving tire 3 is rotated by a rotation driving device (not shown), and the rotation of the driving tire 3 is transmitted from the wheel 25 to rotate the drum 20. Then, the rod R in the first crushing chamber 30 is hooked on a lifter (not shown) and is raised in the rotation direction of the drum 20 (counterclockwise in FIG. 4) as the first crushing chamber 30 rotates. When the lifter (not shown) reaches a position facing the lower side of the first crushing chamber 30, the rod R falls from the lifter (not shown) to the lower side of the first crushing chamber 30 due to gravity. While the first crushing chamber 30 is rotating, the dropped rod R is lifted again in the rotation direction of the drum 20 by a lifter (not shown), and when it reaches a predetermined position, a series of operations of dropping is repeated.

Due to the impact of the drop of the rod R, the raw material M deposited below the first crushing chamber 30 is gradually crushed to produce a crushed material C. At this time, as shown in FIG. 6, as the crushed material C becomes smaller in diameter while being crushed, the inside of the first crushing chamber 30 is lined from the supply unit 21 side with the larger crushed material C and the raw material M. It is pushed out to the 40 side.
When the crushed material C becomes smaller in diameter than the inner diameter of the intake 47, the crushed material C is separated by gravity when the crushed material C reaches above the first crushing chamber 30 as the first crushing chamber 30 rotates. 6 and passes through the communication passage 49 from the inlets 47 and 47 of the liner body 40 in the direction indicated by the arrows in FIG. 6 and then from the discharge ports 48 and 48 to the first crushing chamber 30 as shown in FIG. It is discharged to the second crushing chamber 50 which is outside of the gas.

  6 shows a state in which the inlets 47 and 47 of the liner 40 ′ in the liner body 40 are located below the first crushing chamber 30 for convenience of explanation, Although an arrow is shown so as to be pushed up from the inlets 47 and 47 toward the discharge ports 48 and 48, in the actual use state, the inlets 47 and 47 are moved to the first crushing chamber 30 by the rotation of the first crushing chamber 30. , The crushed material C flows into the communication passage 49 from the intake ports 47 and 47 due to gravity, and further moves in the communication passage 49 as shown by the broken lines in FIG. Are discharged into the second crushing chamber 50.

Here, when the crushed material C has a smaller diameter than the inlets 47 and 47 of the first crushing chamber 30, a large-diameter raw material M accumulates on the supply unit 21 (see FIG. 4) side in the first crushing chamber 30. Since the small-diameter crushed material C is deposited on the liner body 40 side, the rod R positioned on these sediments tilts toward the small-diameter crushed material C side and moves on the sediment to the liner body 40 side. Sometimes it moves. However, since the guide portion 45c of the liner 40 'in the liner body 40 has an inclined surface, as shown in FIG. 6, when the rod R contacts the liner body 40, the guide portion 45c is accompanied with the rotation of the drum 20. Acts to push the rod R back toward the supply unit 21 (in the direction of the arrow in FIG. 6).
Similarly, the rod R that has moved to the stepped portion 45b side of the liner 40 ′ in the liner body 40 is supplied by the stepped portion 45b to the supply portion 21 (see FIG. 4) when the drum 20 is rotated upward. ) Side and the rod R is prevented from being caught in the gap between the step 45b and the inner wall of the first crushing chamber 30.

When the crushed material C passes from the first crushing chamber 30 through the communication passage 49 and is sent into the second crushing chamber 50, the horizontal cylinder mill 1 is provided with the ball B on the protective liner as the drum 20 rotates. The lifter is rotated by a lifter (not shown), hooked, and lifted in the rotation direction (counterclockwise in this embodiment). When the lifter (not shown) reaches a position below the second crushing chamber 50, the ball B falls from the lifter (not shown) due to gravity and collides with the crushed material C accumulated in the second crushing chamber 50. The crushed material C is crushed by this impact force. And while the 2nd crushing chamber 50 is rotating, a series of operation | movement that the ball B which fell is lifted by the lifter (illustration omitted) again and falls when it reaches | attains a predetermined position is repeated, and the particle | grains of the crushing material C The shape and size are adjusted.
In this way, when the crushed material C gets over the discharge part 23 of the second crushing chamber 50, the crushed material C passes through the discharge part 23 and is sent into the trommel 60.

When the crushed material C is sent into the trommel 60, the crushed material C is screened into a product A that satisfies a predetermined standard and another product (trommel over TO) by the rotation of the trommel 60.
Then, the product A that has passed through the trommel 60 is accumulated in the collection means 4 for the product A.
On the other hand, the trommel over TO that has not passed through the trommel 60 is directly discharged from the trommel over discharge portion 63 to the outside.

As described above, according to the liner of the present invention and the crushing apparatus including the liner, the following effects can be obtained.
According to the liner body 40 of the present invention, since the communication passage 49 is provided so as to be opposed to the inner wall of the drum 20, the intake ports 47 and 47 are not blocked by the rod R, and are crushed. A sufficient passing area of the object C can be secured. Moreover, since the guide part 45c is provided in the crushing chamber side wall part 45 which faces the 1st crushing chamber 30 side in the liner body 40, the rod R which has moved to the liner body 40 side is pushed back to the supply part 21 side. It is possible to prevent the rod R from colliding with the liner body 40 and damaging the liner body 40. Further, the liner body 40 is provided so that the intake port 47 opens to the stepped portion 45b, so that the rod R hits the intake port 47, and the impact 47 is crushed and closed by this impact. Can be prevented. Further, since the opening area of the communication path 49 is increased from the intake port 47 toward the discharge port 48, the communication path 49 can be prevented from being clogged with the crushed material C.

As mentioned above, although embodiment of this invention has been described, this invention is not limited to this embodiment.
In the above-described embodiment, the drum is supported by a plurality of tires and is rotated by driving the driving tire 3. However, the drum may be supported by other support means such as a bearing. Further, driving means other than the driving tire, for example, driving means via a gear provided in the circumferential direction on the outer periphery of the drum, or driving by winding a chain belt around the rotating portion of the drum may be used.

  In the embodiment, a rod-like member having a diameter of 90 mm and 75 mm is used as the crushing medium accommodated in the first crushing chamber 30, but a ball-like member having a diameter of 60 mm or more can also be used.

  When a plurality of crushing chambers are provided, the medium accommodated in each crushing chamber may be a rod-shaped member or a ball-shaped member in both crushing chambers, or one of them may be a rod-shaped member or a ball-shaped member.

  In the above-described embodiment, the liner body 40 is formed in a single annular shape by bringing the liners 40 ′ having the same shape into contact with each other. However, the present invention is not limited to this. You may form in cyclic | annular form or disk shape. In the case of forming with a plurality of liners 40 ', it is preferable to provide small protrusions as shown in FIG. 3 on the side surfaces adjacent to each other of each liner 40' (in the example shown, two rectangular protrusions P are provided on one side surface). Provided). The gap between the adjacent liners 40 ′ can be appropriately adjusted by cutting the protrusions P and changing the height. Furthermore, although the passage hole 41 is formed in the center of the liner body 40 so as to protrude into the second crushing chamber 50, a liner that does not form the passage hole 41 may be used.

In the present embodiment, the liner 40 ′ in the liner body 40 is partitioned by the center rib 44 between the intake ports 47 and 47 and between the discharge ports 48 and 48, but is not limited thereto. The inlets 47 and 47 or the outlets 48 and 48 may be connected without providing the center rib 44.
Thereby, the passage area of the crushed object C spreads, and the crushed object C can be discharged into the second crushing chamber 50 more smoothly. In addition, the liner body 40 makes the gap between the stepped portion 45b and the inner wall of the drum 20 (the crushing chamber side wall of the protective liner provided on the inner periphery of the drum 20) smaller than the diameter of the rod R instead of forming the guide portion 45c. Thus, damage to the liner body 40 and the liner 40 'may be prevented.

Further, the liner 40 ′ in the liner body 40 may be provided with side ribs that rise from both sides toward the first crushing chamber side wall 45 at appropriate intervals. Thereby, the intensity | strength of the liner body 40 and liner 40 'can further be increased.
Further, the liner 40 ′ in the liner body 40 has the flat plate surface 45 d interposed between the stepped portion 45 b and the guide portion 45 c, but the present invention is not limited to this, and the guide portion 45 c may be extended as it is. Thereby, it is possible to easily form the liner 40 ′ while maintaining the push-back function of the rod R.

In the above embodiment, the first crushing chamber and the second crushing chamber are divided and provided in the single cylindrical drum 20, but the present invention is not limited to this, and the drum is divided into the upstream side and the downstream side. Then, the first crushing chamber and the second crushing chamber may be provided separately on each drum.
Moreover, the 1st crushing chamber 30 and the 2nd crushing chamber 50, or the 2nd crushing chamber 50 and the trommel 60 may be connected so that isolation | separation is possible by the connection mechanism. Hereinafter, a description will be given with reference to FIG.
FIG. 7: is a fragmentary sectional view which shows the horizontal cylinder type mill in other embodiment, Comprising: (a) is a 1st crushing chamber and a 2nd crushing chamber, and the 2nd crushing chamber and a trommel are connected by a connection mechanism. Sectional drawing which shows a mode that is being performed, (b) is sectional drawing which shows typically a mode that each part was isolate | separated in (a).

As shown in FIG. 7A, the drum 20 has a flange 27 protruding in the circumferential direction on the outer wall of the drum (first drum) including the first crushing chamber 30, and the second crushing chamber 50. And a flange 28 protruding in the circumferential direction on the outer wall of the drum (second drum). The first crushing chamber 30 and the second crushing chamber 50 are connected to each other by a connection mechanism including a bolt (not shown) that fixes the flange 27 and the flange 28, and the liner 40 ′ is fixed to the rib 51. Through the crushed material receiver 43, the drum 51 is connected to a drum (second drum) including the second crushing chamber 50 by fastening with a bolt 7 or the like penetrating the liner 40 'from the rib 51 side. The liner 40 ′ is installed as an annular liner body 40 as a whole.
At this time, the crushed material receiver 43 has an opening on the side surface corresponding to the discharge port 48 on the side surface on the liner body 40 side and an inner peripheral side portion communicating with the second crushing chamber 50 and a drum (first drum). The periphery is closed by the inner peripheral wall. The second crushing chamber 50 is connected to the trommel 60 connected to the flange 29 provided at the end portion on the discharge portion side wall portion 24 side and the discharge portion side wall portion 24 with a bolt 7 or the like.

  Then, as illustrated in FIG. 7B, the liner body 40 is separated from the first crushing chamber 30 together with the second crushing chamber 50. Further, the trommel 60 is separated from the second crushing chamber 50 together with the discharge portion side wall portion 24.

  Thereby, it becomes possible to adjust each part independently, and the workability | operativity at the time of liner body 40 replacement | exchange etc. of the horizontal cylinder type mill 1 can be improved more.

It is sectional drawing of the horizontal cylinder mill in which the liner of this invention is used. FIG. 2 is a diagram showing the liner body shown in FIG. 1 as a single unit, where (a) is a front view showing the entire structure of the liner body, (b) is an enlarged view of the liner in (a), and (c). These are BB sectional drawings of (b). FIG. 3 is a three-dimensional perspective view of the liner shown in FIG. 2. It is a cross-sectional perspective view of a horizontal cylinder mill. It is the disassembled cross-sectional perspective view which looked at the liner body shown in FIG. 4 from the 2nd crushing chamber side. It is an expanded sectional view which shows a mode that a crushed material is discharged | emitted from the communicating path of a liner. FIG. 7: is a fragmentary sectional view which shows the horizontal cylinder type mill in other embodiment, Comprising: (a) is a 1st crushing chamber and a 2nd crushing chamber, and the 2nd crushing chamber and a trommel are connected by a connection mechanism. Sectional drawing which shows a mode that is being performed, (b) is sectional drawing which shows typically a mode that each part was isolate | separated in (a). It is a figure which shows the conventional horizontal cylinder mill, Comprising: (a) is sectional drawing which shows the whole structure of the conventional horizontal cylinder mill, and is an expanded sectional view of the opening part in (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Horizontal cylinder mill 20 Drum 30 1st crushing chamber 40 Liner body 40 'Liner 45a Peripheral part 45b Step part 45c Guide part 47, 47 Inlet 48, 48 Outlet 49 Communication path 50 2nd crushing chamber A Product B Ball C Crushed material R Rod

Claims (8)

Crush used in a horizontal cylindrical mill having a crushing chamber in a drum that rotates around a horizontal rotation axis, and is located at the end of the crushing chamber and crushes the raw material with a crushing medium stored in the crushing chamber A liner for sending objects out of the crushing chamber,
The liner is
When installed along the inner wall of the drum, the liner is provided in an annular shape or a disk shape, and is formed on the downstream side surface of the liner, and the liner is connected to the liner through a communication passage. An intake port formed on the upstream side of the drum toward the inner wall of the drum,
The liner is characterized in that it is provided at a stepped portion formed so as to protrude from the peripheral portion along the inner wall of the drum to the upstream side surface of the liner and to be separated from the inner wall of the drum.   When installed in the drum, the upstream side surface is formed with a guide portion that is inclined radially from the side that is the center of the rotation axis toward the side that is the inner wall of the drum, and the inclination of the guide portion is The liner according to claim 1, wherein the liner is formed as an inclination for guiding the crushing medium in a direction in which the crushing medium is separated from the liner.   The step portion is provided with an inclination, and the inclination is an inclination that is separated from the inner wall of the drum from the downstream side surface to the upstream side surface of the liner when installed in the drum. The liner according to claim 1 or 2.   The liner according to any one of claims 1 to 3, wherein the communication passage has an opening area that increases from the intake port toward the discharge port side.   A horizontal cylindrical mill comprising the liner according to any one of claims 1 to 5 in the drum.   The horizontal cylinder mill includes a first drum having a first crushing chamber as the crushing chamber, and a second crushing chamber for performing additional crushing of the crushed material crushed in the first crushing chamber or adjusting the particle shape. A second drum, and a rib projecting in an annular shape from an inner wall position of the drum toward the inside of the drum, and a fixing bolt for fixing the liner to the rib. The horizontal cylindrical mill according to claim 6, further comprising a connection mechanism that detachably connects the first drum and the second drum to which the liner is fixed. A horizontal cylindrical mill provided with a liner that partitions a crushing chamber in a drum that rotates about a horizontal rotation axis and sends a crushed material crushed to an adjacent crushing chamber,
The drum is
A first crushing chamber for crushing raw materials with a first crushing medium to produce a crushed material;
A second crushing chamber adjacent to the first crushing chamber and performing additional crushing or particle shape adjustment of the crushed material crushed in the first crushing chamber with a second crushing medium,
The liner is
An annular or disk-like shape is provided along the inner wall of the drum, and a discharge port formed along the circumferential direction on the downstream side surface of the liner, and an upstream side of the liner through a communication path communicating from the discharge port. An intake port formed along a circumferential direction toward the inner wall of the drum on a side surface,
A horizontal cylinder type, wherein the intake port is provided in a stepped portion that protrudes from the peripheral edge portion along the inner wall of the drum to the upstream side surface of the liner and is spaced apart from the inner wall of the drum. mill. A crushed material in a horizontal cylindrical mill comprising the liner according to any one of claims 1 to 5, wherein the crushing chamber is partitioned into a first crushing chamber and a second crushing chamber in the drum via the liner. Discharge method,
An introduction step of introducing the raw material to be crushed into the first crushing chamber in the drum;
A first crushing step of crushing the raw material of the first crushing chamber via a crushing medium stored in advance by rotation of a drum;
The crushed crushed material is taken in from an inlet formed toward the inner wall of the drum on the upstream side of the liner that partitions the crushing chamber, and discharged to the downstream side of the liner through a communication passage communicating from the inlet. A discharge step of discharging from the outlet to the second crushing chamber adjacent to the first crushing chamber.

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