JP3713331B2 - Biaxial roll crusher flow control device and flow control method thereof - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a roll crusher suitable for crushing primary crushed materials such as asphalt waste and large stones, which have been difficult to crush in the past, and in particular, smoothing the continuous flow of crushed materials and improving crushing efficiency. Related to improvements.
[0002]
[Prior art]
The roll crusher includes two crushing rolls that rotate in reverse to each other, guides the object to be crushed between the two crushing rolls, and crushes and tears with a crushing blade of the same or different phase, thereby reducing the particle size. Is widely used for secondary crushing of large rocks to reduce their particle size.
[0003]
Objects to be crushed, which are complicated and various in shape, may be stagnated without being smoothly guided to the crushing space between the two crushing rolls. In particular, a soft and thin plate-like material such as asphalt waste is often not lifted down and lifted by two crushing rolls to be floated, and the crushing efficiency is significantly reduced.
[0004]
Recently, it has become a social problem regarding the treatment of asphalt waste. From the viewpoint of economic efficiency, it is desirable that the waste is efficiently crushed at a place where the waste is discharged and reused as an aggregate at the site.
[0005]
A roll crusher in which a soft and thin plate-like material such as asphalt waste is guided downward to recover an unbreakable state is known from JP-A-7-299372. According to this crusher, a flat object to be crushed is raised in the vertical direction, and the lower part is guided between the crushing rolls on both sides, so that the crushing impossible state is eliminated and the crushing state is recovered.
[0006]
It is desirable to crush not only asphalt waste, but also various types of asphalt waste as well as asphalt waste and concrete crushed material at the same time for reuse on site. It is.
[0007]
Not only asphalt waste, but also large stones tend to float. When small stones that are difficult to break up gather in the input space, they may not be broken and many pebbles may float together. Even when large and small mixed stones are sandwiched between crushing blades on both sides to form a multipoint contact system, depending on the shape related to the position of the contact multipoint and the position of the strain distribution point of each stone It can be seen that it enters into an unbreakable state.
[0008]
[Problems to be solved by the invention]
The present invention has been invented under the technical background described above and achieves the following object.
[0009]
An object of the present invention is to provide a flow control device for a biaxial roll crusher and a flow control method therefor, in which the crushable state is eliminated by changing the state of the multipoint contact system.
[0010]
Another object of the present invention is to provide a flow control device for a biaxial roll crusher and a flow control method thereof that can eliminate not only a thin plate-like object to be crushed but also a state in which a large round stone cannot be crushed.
[0011]
Still another object of the present invention is to provide a flow control device for a biaxial roll crusher and a flow control method therefor that change the state of continuous flow to eliminate the crushing impossible state.
[0012]
[Means for Solving the Problems]
The flow control device of the biaxial roll crusher of the present invention 1
Two driven shafts;
In a two-axis roll crusher comprising a plurality of crushing rolls each provided with a plurality of crushing blades extending radially on each of the two axes and rotating in opposite directions to each other,
In order to control the flow of the material to be crushed by forcibly stopping the material to be crushed in the input space located above the crushing space where the material to be crushed is crushed by the crushing roll, from both sides Forcibly stopping
The forced stop means is:
A clamping opposing body for clamping the object to be crushed from one side;
The movable body for clamping is movable in the direction in which the two axes are aligned with respect to the opposing body for clamping, and clamps the object to be crushed from the other side.
[0013]
The flow control device of the biaxial roll crusher of the present invention 2
Two driven shafts;
In a two-axis roll crusher comprising a plurality of crushing rolls each provided with a plurality of crushing blades extending radially on each of the two axes and rotating in opposite directions to each other,
The flow of the material to be crushed is controlled by temporarily holding the large material to be crushed in the input space located above the crushing space where the material to be crushed is crushed by the crushing roll and forcibly stopping it from both sides. Forcibly stopping for
The forced stop means is:
A clamping opposing body for clamping the object to be crushed from one side;
The movable body for clamping is movable in the direction in which the two axes are aligned with respect to the opposing body for clamping, and clamps the object to be crushed from the other side.
[0014]
The flow control device of the biaxial roll crusher of the present invention 3
Two driven shafts;
In a two-axis roll crusher comprising a plurality of crushing rolls each provided with a plurality of crushing blades extending radially on each of the two axes and rotating in opposite directions to each other,
In the input space located above the crushing space where the material to be crushed is crushed by the crushing roll, the material to be crushed in a floating state without being crushed by the crushing roll is temporarily pressed from both sides to forcibly. Forcibly stopping means for controlling the flow of the material to be crushed by stopping,
The forced stop means is:
A clamping opposing body for clamping the object to be crushed from one side;
The movable body for clamping is movable in the direction in which the two axes are aligned with respect to the opposing body for clamping, and clamps the object to be crushed from the other side.
[0015]
The flow control device of the biaxial roll crusher of the present invention 4
In the inventions 1 to 3,
The movable body for clamping is driven by a crushing movable means having power for crushing the object to be crushed by the opposing body for clamping and the movable body for clamping.
[0016]
The flow control device of the biaxial roll crusher of the present invention 5
In the invention 4,
The opposing body for clamping or the movable body for clamping includes a crushing blade surface.
[0017]
The flow control device of the biaxial roll crusher of the present invention 6
In the invention 5,
The crushing movable means is a hydraulic cylinder.
[0021]
According to the flow control method of the biaxial roll crusher of the present invention 7, two crushing rolls which are provided with a plurality of crushing blades extending radially on each of the two driven axes and rotate in opposite directions are opposed to each other. When crushing in the crushing space S2 for crushing an object, the object to be crushed in the input space S1 is forcibly pinched from both sides to forcibly stagnate the continuous flow so that a plurality of objects to be crushed are contained in the crushing roll. The crushing conditions of the object to be crushed in the multi-point clamping system that is clamped by the crushing blades on both sides are changed.
[0022]
The flow control device of the biaxial roll crusher according to the present invention can change the state of the multipoint contact system. When a large stone in the upper input space is sandwiched between stones of various shapes in the crushing space and the position is changed, the state of the multipoint contact system that has become impossible to crush is restored to a crushable state.
[0023]
The restoration is promoted by further pressing and crushing the large stone described above. In this case, the pinching means also serves as the crushing means. The crushing means can further serve as an exclusion means.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a flow control device for a biaxial roll crusher according to the present invention will be described. 1 and 2 are a front sectional view and a plan view, respectively, showing Embodiment 1 of a flow control device for a biaxial roll crusher according to the present invention. A drive system side casing 2 and a driven system side casing 3 are fixedly provided on the crusher main body surface 1.
[0025]
A driving hydraulic unit 4 is disposed and provided in the driven system side casing 3. Two hydraulic motors 5 and 6 are fixedly provided on the side wall 3 </ b> A of the driven system side casing 3. Two drive shafts 7 and 8 are connected to the output shafts of the hydraulic motors 5 and 6, respectively.
[0026]
The drive two shafts 7 and 8 have a square cross section. The crushing blades 9 and 11 are fixed to the drive two shafts 7 and 8. Between the drive biaxial shafts 7 and 8 and the crushing blades 9 and 11, cylindrical bodies 12 and 13 and string-shaped spacers 14 and 15 are interposed, respectively. The intervention of the cylindrical bodies 12 and 13 and the lunar-shaped spacers 14 and 15 reinforces the fixing force in the rotational direction of the crushing blades 9 and 11 and the drive biaxial shafts 7 and 8.
[0027]
The crushing roll 16 is composed of a drive shaft 7 and a crushing blade 9. The crushing roll 17 includes a drive shaft 8 and a crushing blade 11. The crushing roll 16 and the crushing roll 17 are installed in a crusher casing 18. A crushing space S described later is formed in the crusher casing 18.
[0028]
Both the crushing blades 9 and 11 are composed of a plurality of bodies extending radially on the two drive axes. The multiple bodies of the two crushing blades 9 and 11 are attached to the drive shafts 7 and 8 side by side in the axial direction. Both crushing blades 9 and 11 rotate in opposite directions.
[0029]
That is, when viewed from the axial direction, the right crushing blade 9 rotates counterclockwise, and the left crushing blade 11 rotates clockwise. Both drive shafts are oriented parallel to each other in the horizontal direction. The one of the crushing blades 11 or 9 on the other side is sandwiched between two adjacent ones of the crushing blades 9 or 11.
[0030]
A charging casing 19 for guiding the object to be crushed downward is provided in an upper part inside the crusher casing 18. A forced stopping means 21 is provided fixed to the charging casing 19 or the like. The forcible stopping means 21 has a function of forcibly stopping the object to be crushed in the input space located above the crushing space where the object to be crushed is broken by the crushing rolls 16 and 17 from both sides. ing. With this function, the flow of the object to be crushed can be controlled.
[0031]
The forced stopping means 21 is movable in the direction in which the driving two shafts 7 and 8 are aligned with respect to the clamping opposing body 22 and the clamping opposing body 22 for clamping the object to be crushed from one side, and the object to be crushed is on the other side. It is comprised from the clamping movable body 23 for clamping from the side.
[0032]
The clamping pressure opposing body 22 is fixed to the inner surface side of the charging casing 19. The sandwiching movable body 23 is movably provided inside the charging casing 19. The sandwiching opposing body 22 has a fixed-side sandwiching surface 24 that faces the sandwiching movable body 23. The sandwiching movable body 23 has a movable-side sandwiching surface 25 that faces the sandwiching opposing body 22. The fixed-side clamping surface 24 and the movable-side clamping surface 25 are substantially parallel.
[0033]
The fixed-side clamping surface 24 and the movable-side clamping surface 25 are orthogonal to the direction in which the two drive shafts 7 and 8 face each other, and are, for example, generally vertical surfaces. That is, the fixed-side clamping surface 24 and the movable-side clamping surface 25 are orthogonal to the axis perpendicular plane. The pinching movable body 23 is fixed to an expansion / contraction end of a hydraulic cylinder 27 which is a linear drive means fixed to the drive system casing 2. The hydraulic cylinder 27 is supplied with pressure oil for operation from the drive hydraulic unit 4 via the hydraulic hose 28.
[0034]
FIG. 3 is a plan view showing the sandwiching movable body 23. The pinching movable body 23 extending in the axial direction is formed of a thin plate-like body in order to sharpen the tip, but a plurality of reinforcing plates 31 are attached by welding for a reinforcing structure. The sandwiching movable body 23 is guided forward and backward by guides 32 on both sides (the figure shows only one side). The left and right ends of the movable-side clamping surface are formed on an inclined surface 34 for releasing the clamped object to be crushed.
[0035]
The crushing blades 9 and 11 have crushing blade surfaces 41 and 42 as front surfaces in the rotation direction. Although the crushing blade surface 41 is a curved surface, it is generally formed in an inclined surface whose outer side in the radial direction is inclined forward in the rotational direction with respect to a plane that includes the axis of the rotation shafts 7 and 8 and passes through the root portion of the blade surface. . Such two inclined surfaces facing each other in the same phase form a working surface that pinches the object to be crushed between them so as to send them inside.
[0036]
FIG. 4 shows a momentary example of the operating state of the flow control device of the biaxial roll crusher according to the present invention. The crushing blades 9 and the crushing blades 11 of the left and right crushing rolls 16 and crushing rolls 17 are in the same phase (strictly speaking, they are in the same phase in the reverse rotation direction). That is, the left crushing blade 11A and the right crushing blade 9A are in the same phase.
[0037]
This working state is such that a plurality of relatively small stones are sandwiched between the crushing blades 9 and the crushing blades 11 of the right and left crushing rolls 16 and crushing rolls 17, that is, one cobble is left and right. A relatively large stone in the input space S2 is sandwiched between the left and right stones, but is not crushed by the full power of the hydraulic cylinder 27.
[0038]
Here, the crushing space S2 refers to a space occupied by an object to be crushed by being directly pressed between the crushing blades 9 and 11 on both sides. The input space S1 is a space located above the crushing space S2. The discharge space S3 refers to a space located below the crushing space S2. The crushing space S is formed by the input space S1, the crushing space S2, and the discharge space S3.
[0039]
The crushing energy of the hydraulic motors 5 and 6 is dispersed in a plurality of stones constituting the multi-point clamping contact system in the state of FIG. 4, and this multi-point system is a strained portion of each stone with the dispersed energy. A positional relationship is formed so as not to be destroyed.
[0040]
When the energy of the hydraulic cylinder 27 is applied to a large stone in such a state, the large rock is crushed in an instant because the crushing condition causes a phase change. When such crushing occurs, the stones that have not yet been crushed may be collapsed by receiving part of the energy of the crushing blades on both sides.
[0041]
FIG. 5 shows that even when a larger stone is not crushed in the hydraulic cylinder 27, the position of the large stone is changed at the moment when the hydraulic cylinder 27 is squeezed between the opposing body 22 for clamping and the movable body 23 for clamping. The amount of energy that is given to the stone with a large blade is added to the other stones, and the distribution position of the other stones changes, which may cause crushing instantaneously.
[0042]
Thus, by forcibly stopping and changing the continuous flow of the object to be crushed, the crushable state can be resolved, the crushable state can be restored, and the original continuous flow can be restored. The reciprocating motion of the movable clamping member 23 can be performed periodically or by detecting the torque value of the hydraulic motor.
[0043]
If crushing does not occur, the material to be crushed in the input space is removed from the crushing space and returned to the input space again. The crushing movable means that has the power to crush the object to be crushed by the opposing body for clamping and the movable body for clamping, presses the object to be crushed by the opposing body for clamping and the movable body for clamping, from the input space to the outside space. It also serves as a means of exclusion.
[0044]
Such an excluding means is such that a part of a hydraulic cylinder is rotatably supported and grip claws are attached to both sides of the movable body for clamping. After the object to be crushed cannot be crushed by the opposing body for squeezing and the movable body for squeezing, and sandwiched from both sides by the gripping claws, the movable body for squeezing is moved backward to rotate the hydraulic cylinder which is the movable means for crushing, Uncrushable materials are excluded from the crushing space S.
[0045]
【The invention's effect】
The flow control device of the biaxial roll crusher according to the present invention can eliminate the state where crushing is impossible without completely stopping the continuous flow. The crushing efficiency of secondary crushing of primary crushing materials mixed with large and small stones, flat asphalt waste, and concrete waste is greatly improved.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing an embodiment of a flow control device for a biaxial roll crusher according to the present invention.
FIG. 2 is a plan view of FIG. 1;
FIG. 3 is a plan view showing a portion of a movable side pinching body.
FIG. 4 is a front sectional view showing an operation state.
FIG. 5 is a front sectional view showing another operation state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 4 ... Drive hydraulic unit 7 ... Drive shaft 8 ... Drive shaft 9 ... Crushing blade 11 ... Crushing blade 16 ... Crushing roll 17 ... Crushing roll 21 ... Forced stop means 22 ... Opposing body 23 for pinching ... Movable body 24 for pinching ... Fixed side clamping surface 25 ... Moving side clamping surface

Claims (7)

In the biaxial roll crusher comprising two driven shafts and two crushing rolls that are provided with a plurality of crushing blades extending radially on each of the two shafts and rotate in opposite directions to each other, Forced stop for controlling the flow of the material to be crushed by temporarily holding the material to be crushed in the input space located above the crushing space where the material to be crushed by the roll is temporarily stopped from both sides. With means,
The forced stop means is:
A clamping opposing body for clamping the object to be crushed from one side;
A flow control device for a biaxial roll crusher, which is movable in a direction in which the two axes are aligned with respect to the sandwiching opposing body and comprises a sandwiching movable body for sandwiching the object to be crushed from the other side. Two driven shafts;
In a two-axis roll crusher comprising a plurality of crushing blades extending radially on each of the two axes and rotating opposite to each other, the crushing object is crushed by the crushing roll. Forcibly stopping means for controlling the flow of the object to be crushed by temporarily holding a large object to be crushed in the input space located above the crushing space and forcibly stopping it from both sides;
The forced stop means is:
A clamping opposing body for clamping the object to be crushed from one side;
A flow control device for a biaxial roll crusher, which is movable in a direction in which the two axes are aligned with respect to the sandwiching opposing body and comprises a sandwiching movable body for sandwiching the object to be crushed from the other side. Two driven shafts;
In a two-axis roll crusher comprising a plurality of crushing rolls each provided with a plurality of crushing blades extending radially on each of the two axes and rotating in opposite directions to each other,
In the input space located above the crushing space where the material to be crushed is crushed by the crushing roll, the material to be crushed in a floating state without being crushed by the crushing roll is temporarily pressed from both sides to forcibly. Forcibly stopping means for controlling the flow of the material to be crushed by stopping,
The forced stop means is:
A clamping opposing body for clamping the object to be crushed from one side;
A flow control device for a biaxial roll crusher, which is movable in a direction in which the two axes are aligned with respect to the sandwiching opposing body and comprises a sandwiching movable body for sandwiching the object to be crushed from the other side. In one aspect selected from claims 1, 2 and 3,
A flow control device for a two-axis roll crusher in which the pressing movable body is driven by a crushing movable means having a power for crushing an object to be crushed by the clamping pressure opposing body and the clamping pressure movable body. In claim 4,
The opposing body for clamping or the movable body for clamping has a crushing blade surface. A flow control device for a biaxial roll crusher. In claim 5,
The crushing movable means is a hydraulic cylinder. A flow control device for a biaxial roll crusher. Two crushing blades extending radially on each of the two driven shafts and facing each other and rotating in opposite directions are thrown into the crushing space S2 where crushing objects cannot be crushed. A multipoint clamping system in which the object to be crushed in the space S1 is forcibly pinched from both sides to forcibly stagnate the continuous flow, and a plurality of objects to be crushed are pinched by the crushing blades on both sides of the crushing roll. The flow control method of the biaxial roll crusher which changes the crushing conditions of the to-be-crushed object.

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