JPH09313962A - Device and method for controlling flow in biaxial roll crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the state of a multipoint contact system to be changed and to solve a crushing impossible state by positioning a charging space in the upside of a crushing space in which material to be crushed is crushed by a pair of rolls for crushing and equipping a forced stay means by which the material to be crushed existing in the charging space is temporarily pressed from both sides and forcedly stayed. SOLUTION: A biaxial roll crusher is equipped with a plurality of crushing blades 9, 11 respectively. Rolls 16, 17 for crushing which are mutually reversely rotated are axially supported in the casing 18 of the crusher. A casing 19 for charge which induces the material to be crushed to the lower part is provided in the upper part in the casing 18 of the crusher and a forced stay means 21 is provided therein. The forced stay means 21 equips such a function that the material to be crushed existing in the charging space is temporarily pressed from both sides and forcedly stayed. The charging space is positioned in the upside of the crushing space in which the material to be crushed is crushed by the rolls 16, 17. The forced stay means 21 is constituted of an opposite body 22 for pressing the material to be crushed from one side and of a movable body 23 for pinching in which the material to be crushed is pinched from both sides and a hydraulic cylinder 27 is used as a driving source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to asphalt waste,
The present invention relates to a roll crusher suitable for crushing a primary crushed object such as a large stone that has been difficult to crush in the past, and particularly to an improvement for smoothing continuous flow of a crushed object and improving crushing efficiency.

[0002]

2. Description of the Related Art A roll crusher is provided with two crushing rolls which rotate in opposite directions, and guides a crushed object between the two crushing rolls, and crushes and tears it with a crushing blade of the same or different phase. Due to its action, it is widely used for secondary crushing rocks having a large grain size and reducing the grain size.

Objects to be crushed, which have complicated shapes and various shapes, may not be smoothly guided to the crushing space between the two crushing rolls and may be stagnant. In particular, a soft and thin plate-like material such as asphalt waste is often lifted by two crushing rolls to be in a floating state without being guided downward, and the crushing efficiency is significantly reduced.

Recently, there has been a social problem regarding the treatment of asphalt waste. From the viewpoint of economic efficiency, it is desired that the waste be efficiently crushed into small pieces and reused as an aggregate at the site.

A roll crusher in which a soft and thin plate-like material such as asphalt waste is guided downward to recover the uncrushable state is known from Japanese Patent Laid-Open No. 7-299372. According to this crusher, a flat crushed object is vertically raised and the lower part is guided between the crushing rolls on both sides, so that the uncrushable state is eliminated and the crushed state is restored.

When not only asphalt waste but also crushed concrete is secondarily crushed and both asphalt waste and crushed concrete are reused at the site at the same time,
It is desirable to crush not only asphalt waste but also various other things.

Not only asphalt waste, but also large stones tend to float. When small stones that are not easily crushed gather in the charging space, they may not be crushed and many pebbles may float collectively. Even when mixed large and small stones are sandwiched between crushing blades on both sides to form a multi-point contact system, it depends on the shape related to the position of the multi-point contact and the distribution point of strain of each stone. , It can be seen that it enters a state that cannot be crushed.

[0008]

The present invention has been made under the technical background described above, and achieves the following objects.

An object of the present invention is to provide a flow control device for a twin-screw roll crusher and a flow control method for the same, which can eliminate the uncrushable state by changing the state of the multipoint contact system.

Another object of the present invention is to provide a flow control device for a twin-screw roll crusher and a flow control method therefor, which can eliminate not only the thin plate-like object to be crushed but also the uncrushable state of a large round stone.

Still another object of the present invention is to provide a flow control device for a twin-screw roll crusher and a flow control method thereof for changing the state of continuous flow to eliminate the uncrushable state.

[0012]

A flow control device for a two-axis roll crusher according to the present invention comprises a driven two-axis and two
In a biaxial roll crusher consisting of a plurality of crushing blades each of which extends radially on its shaft and facing each other and rotating in opposite directions, a crushing object is crushed by the crushing rolls. The forced detention means for controlling the flow of the debris by forcibly depressing the debris in the loading space located above the crushing space from both sides temporarily, and forcibly detention means, A pinching counter body for pinching the crushed object from one side, and a pinching member for moving the crushed object from the other side in a direction in which the two axes are aligned with the pinching counter body. It consists of a movable body for pressure.

A flow control device for a two-axis roll crusher according to a second aspect of the present invention is provided with two driven shafts and a plurality of crushing blades extending radially on each of the two shafts, and they are opposed to each other and rotate in opposite directions. In a twin-screw crusher consisting of body crushing rolls, a large crushable object in the loading space located above the crushing space where the crushing object is crushed by the crushing roll is temporarily pressed from both sides and forced. Forcibly stopping the crushed object by controlling the flow of the crushed object, and the forced stopping means for clamping the crushed object from one side, and the clamping object for clamping. It comprises a pinching movable body that is movable in the direction in which the two axes are aligned with respect to the body and that pinches the crushed object from the other side.

A flow control device for a two-axis roll crusher according to a third aspect of the present invention is provided with two driven axes and a plurality of crushing blades extending in a radial direction on each of the two axes, and the two rotate opposite to each other. In a biaxial roll crusher including a body crushing roll, the crushing roll is in a floating state without being crushed by the crushing roll in a charging space located above a crushing space in which the crushing object crushes the object to be crushed. A force retaining means for controlling the flow of the object to be crushed by temporarily pressing the object to be crushed from both sides and forcibly retaining it is provided, and the force retaining means clamps the object to be crushed from one side. And a clamping movable body for clamping the object to be crushed from the other side, the movable body being movable in a direction in which the two axes are aligned with respect to the clamping opposed body.

A flow control device for a biaxial roll crusher according to a fourth aspect of the present invention is the movable means for crushing having the power for crushing an object to be crushed by the opposing body for clamping and the movable body for clamping in the above-mentioned inventions 1 to 3. Thus, the pinching movable body is driven.

In a flow control device for a biaxial roll crusher according to a fifth aspect of the present invention, in the fourth aspect, the pinching opposing body or the pinching movable body has a crushing blade surface.

A flow control device for a biaxial roll crusher according to a sixth aspect of the present invention is the same as the fifth aspect, wherein the crushing movable means is a hydraulic cylinder.

A flow control device for a biaxial roll crusher according to a seventh aspect of the present invention is the flow control device according to the first to third aspects, in which the crushed object is pinched by the pinching opposing body and the pinching movable body to move from the charging space to the external space. The movable body for pinching is driven by the removing means for removing.

A flow control device for a biaxial roll crusher according to an eighth aspect of the present invention is the flow control device according to the seventh aspect, wherein the pinching movable body includes a grip claw.

A flow control device for a biaxial roll crusher according to a ninth aspect of the present invention is the movable means for crushing having the power for crushing an object to be crushed by the opposing body for clamping and the movable body for clamping in the above-mentioned inventions 1 to 3. Thus, the pinching movable body is driven, and the crushing means also serves as an excluding means for pinching the object to be crushed by the pinching counter body and the pinching movable body and excluding it from the charging space to the space outside the machine.

The flow control method of the biaxial roll crusher according to the tenth aspect of the present invention comprises two crushing rolls which face each other and are provided with a plurality of crushing blades extending radially on each of the two driven axes and which face each other and rotate in opposite directions. The crushing space S where the crushed object
When the crushable state in 2 is not possible, the crushed material in the charging space S1 is forcibly pinched from both sides to forcibly stop the continuous flow, and a plurality of crushed objects are crushed by the crushing blades on both sides of the crushing roll. The crushing conditions of the crushed object of the multi-point pinching system to be pressed are changed.

The flow control device of the biaxial roll crusher according to the present invention can change the state of the multipoint contact system. When the stone is sandwiched between stones of various shapes in the crushing space and a large stone in the loading space above is pinched to cause a change in position,
The state of the multi-point contact system that cannot be crushed is restored to the crushable state.

The restoration is promoted by pressing the large stones and further crushing them. In this case, the pinching means also serves as the crushing means. The crushing means can also serve as the removing means.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a flow control device for a biaxial roll crusher according to the present invention will be described. FIG.
2 and FIG. 2 are a front sectional view and a plan view, respectively, showing Embodiment 1 of the flow control device of the biaxial roll crusher of the present invention. A drive system side casing 2 and a driven system side casing 3 are fixedly provided on the crusher body base surface 1.

A driving hydraulic unit 4 is arranged and provided in the driven system side casing 3. Two hydraulic motors 5 and 6 are fixedly provided on the side wall 3A 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.

The drive shafts 7 and 8 have a rectangular cross section.
Crushing blades 9 and 11 are fixed to the two drive shafts 7 and 8. Between the two drive shafts 7 and 8 and the crushing blades 9 and 11, there are provided cylindrical bodies 12 and 13 and string-shaped spacers 14 and 1, respectively.
5 are interposed. The cylindrical bodies 12 and 13 and the lunar-shaped spacers 14 and 15 are interposed between the crushing blades 9 and 11 and the drive unit 2.
The fixing force in the rotation direction of the shafts 7 and 8 is strengthened.

The crushing roll 16 includes a drive shaft 7 and a crushing blade 9.
It is composed of The crushing roll 17 has a drive shaft 8
And a crushing blade 11. Crushing roll 16
The crushing roll 17 is installed in the crusher casing 18. A crushing space S, which will be described later, is formed in the crusher casing 18.

The crushing blades 9 and 11 are composed of a plurality of bodies extending radially on each of the two drive axes. A large number of both 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.

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 in the horizontal direction and are parallel to each other. The crushing blades 11 or 9 on the other side are integrated between two adjacent bodies of one crushing blade 9 or 11.

At the upper part inside the crusher casing 18,
A charging casing 19 for guiding the crushed material downward is provided. The forced detention means 21 is used for the input casing 1.
It is fixedly provided at 9 and the like. Forced stop means 21
Has a function of temporarily pressing the crushable objects in the charging space located above the crushing space where the crushable rollers 16 and 17 crush the crushable objects from both sides and forcibly stopping them. With this function, the flow of the crushed material can be controlled.

The forced retention means 21 includes a pinching opposing body 22 and a pinching opposing body 22 for pinching the crushed object from one side.
On the other hand, the two drive shafts 7 and 8 are movable in the direction in which the two drive shafts 7 and 8 are arranged side by side.

The clamping member 22 is used as the charging casing 1.
It is fixed to the inner surface side of 9. The pinching movable body 23 is movably provided inside the charging casing 19.
The pinching opposing body 22 has a fixed side pinching surface 24 that faces the pinching movable body 23. The pinching movable body 23 has a movable side pinching surface 25 that faces the pinching opposing body 22. The fixed pressure surface 24 and the movable pressure surface 25 are substantially parallel.

The fixed side clamping surface 24 and the movable side clamping surface 25 are
The two drive shafts 7 and 8 are orthogonal to the direction in which they face each other, and are, for example, generally vertical planes. That is, the fixed-side pressing surface 24 and the movable-side pressing surface 25 are orthogonal to the plane perpendicular to the axis. The clamping body 23 is
It is fixed to a telescopic end of a hydraulic cylinder 27 which is a linear drive means fixed to the drive system side casing 2. The hydraulic cylinder 27 is supplied with operating pressure oil from the driving hydraulic unit 4 via a hydraulic hose 28.

FIG. 3 is a plan view showing the pinching movable body 23. The pinching movable body 23 extending long in the axial direction is formed of a thin plate-like body in order to make the tip sharp, but a plurality of reinforcing plates 31 are attached by welding for the purpose of reinforcing structure. The pinching 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 pressing surface are formed as slopes 34 for letting out the compressed object to be crushed.

The crushing blades 9 and 11 have crushing blade surfaces 41 and 42 as front surfaces in the front in the rotation direction. Crushing blade surface 41
Is a curved surface, but is generally formed as an inclined surface whose outer side in the radial direction inclines forward in the rotational direction with respect to a plane including the axis of the rotating shafts 7 and 8 and passing through the root of the blade surface. Such two inclined surfaces having the same phase and facing each other form an operation surface for pinching the crushed object between them so as to send it inward.

FIG. 4 shows a momentary example of the operating state of the flow control device for a two-axis roll crusher according to the present invention.
Crushing blades 9 for the left and right crushing rolls 16 and crushing rolls 17
And the crushing blade 11 are in the same phase (strictly speaking, they are in the same phase in opposite rotation directions). That is, the left crushing blade 11A and the right crushing blade 9A are in the same phase.

This operating state is the right and left crushing rolls 16
And a plurality of relatively small stones are pressed between the crushing blades 9 and 11 of the crushing roll 17, that is, in the crushing space S2,
One small stone is pinched by the left and right stones, and a relatively large stone in the charging space S2 is pinched between the left and right stones.
The hydraulic cylinder 27 is in a non-crushable state in which it is not crushed by the full power of the hydraulic cylinder 27.

Here, the crushing space S2 means a space occupied by a crushed object which is crushed by being directly pressed by the crushing blades 9 and 11 on both sides. The charging space S1 is a space located above the crushing space S2. The discharge space S3 is the crushing space S2
A space located below. The crushing space S is composed of a charging space S1, a crushing space S2, and a discharging space S3.

The crushing energy of the hydraulic motors 5 and 6 is distributed to a plurality of stones forming the multipoint clamping contact system in the state of FIG. Is formed so that the strained part of the is not destroyed.

When the energy of the hydraulic cylinder 27 is applied to a large stone in such a state, the crushing condition causes a phase change, so that the large stone is crushed in an instant. When such crushing occurs, some of the energy of the crushing blades on both sides receives the energy of the crushed stone which has not been crushed yet.

FIG. 5 shows that even if a larger stone is not crushed by the hydraulic cylinder 27, the position of the large stone changes at the moment when the hydraulic cylinder 27 clamps it between the clamping counter body 22 and the clamping movable body 23. , Both crushing blades disperse energy in large stones and give it to other stones, and the positional relationship of strain distribution of other stones also changes, which may cause instant crushing.

By forcibly stopping and changing the continuous flow of the material to be crushed in this way, the uncrushable state can be eliminated, the crushable state can be restored, and the original continuous flow can be restored. The reciprocating motion of the movable side pressing member 23 can be performed periodically or by detecting the torque value of the hydraulic motor.

When crushing does not occur, the material to be crushed in the charging space is removed from the crushing space and returned to the charging space again. The movable means for crushing, which has the power to crush the object to be crushed by the pressing object and the movable object for pressing, crushes the object to be crushed by the opposed object for clamping and the movable object for pressing, and moves from the loading space to the space outside the machine. It also serves as an elimination means to eliminate.

Such an excluding means is such that a part of the hydraulic cylinder is rotatably supported and gripping claws are attached to both sides of the pinching movable body. After the object to be crushed that cannot be crushed is clamped by the clamping object and the clamping movable body from both sides with the gripping claws, the clamping movable body is retracted and the hydraulic cylinder that is the crushing movable means is rotated, The non-crushable material is excluded from the crushing space S.

[0045]

The flow control device for a two-axis roll crusher according to the present invention can eliminate the uncrushable state without completely stopping the continuous flow. The crushing efficiency of the secondary crushing of the primary crushed material mixed with large and small stones, plate-shaped asphalt waste, and concrete waste is greatly improved.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of a flow control device for a biaxial roll crusher of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view showing a portion of a movable side pressing member.

FIG. 4 is a front sectional view showing an operating state.

FIG. 5 is a front sectional view showing another operating state.

[Explanation 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 retention means 22 ... Clamping counter member 23 ... Clamping movable body 24 ... Fixed side clamping surface 25 ... Movable side clamping surface

Claims (10)

[Claims] 1. A biaxial roll crusher comprising two driven shafts, and two crushing rolls facing each other and provided with a plurality of crushing blades extending in radial directions on the two shafts, respectively. In, the flow of the material to be crushed is controlled by temporarily pressing the material to be crushed from both sides in the input space located above the crushing space where the material to be crushed by the crushing roll is forced to stop. Forcibly retaining means for clamping the object to be crushed from one side, and the movable retaining means is movable in a direction in which the two shafts are aligned with the opposing body for clamping. A flow control device for a biaxial roll crusher, which includes a clamping movable body for clamping the crushed object from the other side. 2. A biaxial roll crusher comprising two driven shafts and two crushing rolls which face each other and each of which has a plurality of crushing blades extending radially and which face each other and rotate in opposite directions. In the above, the flow of the crushable material is temporarily stopped by pressing the large crushable material in the charging space located above the crushing space where the crushable material is crushed by the crushing roll from both sides forcibly. Forced detention means for controlling is provided, and the forced detention means is movable in a direction in which the two shafts are aligned with the pinching counter body for pinching the object to be crushed from one side. And a flow control device for a biaxial roll crusher, comprising a pinching movable body for pinching the crushed object from the other side. 3. A biaxial roll crusher comprising two driven shafts, and two crushing rolls facing each other and provided with a plurality of crushing blades extending in a radial direction on each of the two shafts and rotating in opposite directions. In the above, in the charging space located above the crushing space where the crushable object is crushed by the crushing roll, the crushable object that is in a floating state without being crushed by the crushing roll is temporarily pressed from both sides and forced. Forcibly holding the crushed object from one side, and forcibly holding the crushed object from one side, and forcibly holding the crushed object 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 a body and includes a clamping movable body for clamping the crushed object from the other side. 4. The clamping means according to claim 1, 2 or 3, wherein the crushing movable means having a power to crush an object to be crushed by the clamping pressure opposing body and the clamping pressure movable body. A flow control device for a two-axis roll crusher in which a movable body is driven. 5. The flow control device for a biaxial roll crusher according to claim 4, wherein the pinching counter body or the pinching movable body has a crushing blade surface. 6. The flow control device for a biaxial roll crusher according to claim 5, wherein the crushing movable means is a hydraulic cylinder. 7. The exclusion according to claim 1, wherein the object to be crushed is squeezed by the squeezing counter member and the squeezing movable member to be removed from the charging space to the external space. A flow control device for a biaxial roll crusher in which the clamping body is driven by means. 8. The flow control device according to claim 7, wherein the clamping movable body includes a grip claw. 9. The clamping means according to claim 1, wherein the clamping means is provided with a power for crushing an object to be crushed by the clamping counter body and the clamping movable body. A movable body is driven, and the crushing means is a two-axis roll crusher that also functions as an excluding means for squeezing an object to be crushed by the squeezing counter body and the squeezing movable body to remove the crushed material from the input space to the external space. Flow control device. 10. Crushing in a crushing space S2 in which a plurality of crushing blades, each of which is driven in a radial direction, are provided on each of two driven shafts, and the two crushing rolls facing each other and rotating in opposite directions crush the object to be crushed. In the disabled state, the crushed material in the charging space S1 is forcibly clamped from both sides to forcibly stop the continuous flow, and a plurality of crushed materials are clamped by the crushing blades on both sides of the crushing roll. A flow control method for a biaxial roll crusher that changes the crushing conditions of a crushed object in a multipoint clamping system.