JP2002210415A - Roller for screening and rolling screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rolling screen capable of surely dropping even a viscous or a high water content and very undesirably conditioned raw material through gaps between rotary rolls, and realizing high efficiency screening operation. SOLUTION: When the rolling screen 5 is constructed by arranging at prescribed intervals in the flowing direction of the raw material rotary rolls 11 provided with rollers each of which is provided by arranging a plurality of rotary rollers 12 slanted at a fixed angle within the range from 30 degrees and not exceeding 90 degrees in the direction of its rotary shaft around the shaft at a prescribed pitch in the direction of the rotary shaft, a plurality of passages for the raw material extending in a zigzag in the direction of the flow of the raw material is formed by the gaps 14 formed between slanted circumferential grooves 13 and those 13 formed between rotary rollers 12 on adjacent rotary rolls 11 provided with rollers, and the very undesirably conditioned raw material such as a viscous or a high water content raw material can surely be dropped through the gaps 14 of the rotary rolls 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for sifting raw materials in a coarse sieving process before finely crushing or mixing with a solidifying agent and stabilizing the raw materials, thereby ensuring sieving and dispensing to smoothly carry out subsequent sorting and supply. Sieving rolls and roll screens that make it possible to sieve.

[0002]

2. Description of the Related Art In sorting and supplying raw materials such as soil generated at construction sites and construction sites, for example, as a facility for coarsely sieving and discharging before fine crushing, a process of supplying and selecting raw materials. , A roll type roll screen is used. Typical prior art of this roll screen is described in, for example, JP-A-9-1068, JP-A-9-1069, and JP-A-9-1071, and Japanese Patent No. 2729589. According to FIG. 7, as shown in FIG. 7, the roll screen 25 includes a sieving roll 3 described later.
0 are arranged at predetermined intervals in the flow direction of the raw material.

More specifically, the roll screen 25 is composed of a plurality of sieving screens in which a plurality of rotating rollers 31 are arranged at predetermined intervals on a roll, and a circumferential groove 32 having a predetermined width is formed between the rotating rollers 31. A roll 30 is provided. The circumferential groove 32 of each sieving roll 30 is aligned along the flow direction of the raw material, that is, in a direction perpendicular to the roll axis passing through the center of the roll in the radial direction and on a straight line. The gap 33 formed by the circumferential groove 32 between the gaps becomes a “sieving mesh”. The rough in the raw material larger than the gap 33 is conveyed to the end by the rotating roller 31 and discharged, and is smaller than the gap 33. Raw materials, such as rough stones, mud, clay, etc., in the raw material are sieved by falling through the gaps 33.

In the roll screen 25 according to the prior art 1 having such a configuration, since the circumferential grooves 32 between the rotating rollers 31 are aligned and arranged in a straight line along the flow direction of the raw material, the viscous viscosity is increased. When sieving a raw material having a high moisture content or a raw material having a high water content, the raw material may drop through the gap 33 only by moving on the rotating roller 31, so that there is a problem that the raw material is not sufficiently sieved. .

[0005]

[0005] In contrast,
As shown in FIG. 8, a circumferential groove 32 between each of the rotating rollers 31 is provided in a direction perpendicular to a roll axis along the flow direction of the raw material, and circumferential grooves adjacent before and after in the flow direction of the raw material. A staggered arrangement of 32 is also provided. In the roll screen 25 according to the conventional example 2, the raw material is dispensed while slightly meandering in the width direction instead of being straight. However, even in the case where a viscous raw material or a raw material having a high moisture content is sieved, the raw material only moves in one direction on the rotating roller 31 as in the case of the above-described conventional example 1, and almost all of the raw material moves. Is discharged without falling through the gap 33, so that there still remains a problem that the raw materials are not sufficiently sieved.

The present invention has been made in order to solve such problems, and therefore, an object of the present invention is to provide a method for screening viscous raw materials or raw materials having a high water content. The sieving roll and the sieving roll, which enable the raw material to move only on the rotating rolls, reliably drop from the gap between the adjacent rotating rolls, and realize highly efficient sieving operation, and It is to provide a roll screen.

[0007]

According to the present invention, as a means for achieving the above object, the invention of claim 1 is a roll for forming a roll screen by arranging at a predetermined interval in a flow direction of raw materials. The sieving roll is characterized in that a plurality of rotating rollers inclined with respect to a roll axis passing through the center in the radial direction of the roll are provided at a predetermined pitch in the roll axis direction.

According to a second aspect of the present invention, in the sieving roll according to the first aspect, an inclination angle of the rotating roller with respect to a roll axis is 30 ° or more and 90 ° or more.
It is characterized in that the angle is within a range of less than.

According to a third aspect of the present invention, there is provided the sieving roll according to the second aspect, wherein the rotating roller is the same on each of the left and right sides on the basis of the center position in the roll axis direction. It is characterized by being provided circumferentially in an oblique direction and in a symmetrical oblique direction between the left and right sides. According to a fourth aspect of the present invention, there is provided the sieving roll according to the second aspect, wherein the rotary roller is provided around the entire length of the roll axis in the same oblique direction.

According to a fifth aspect of the present invention, there is provided a sieving roll according to any one of the first to fourth aspects, wherein the rotating roller is viewed from a direction perpendicular to a diameter thereof. The rotary roller is formed in an elliptical shape, and is characterized by being substantially circular when viewed from the roll axis direction.

According to a sixth aspect of the present invention, in the sieving roll according to any one of the first to fifth aspects, a rubber layer is formed on a surface of the rotary roller. It is characterized by.

According to a seventh aspect of the present invention, there is provided a rotating roller which is inclined at a fixed angle within a range of 30 ° or more and less than 90 ° with respect to a roll axis having a center in a radial direction of the roll. A plurality of sieving rolls provided a plurality of times at a predetermined pitch are arranged at a predetermined interval in the flow direction of the raw material, and the inclined circumferential grooves formed between the plurality of rotating rollers of each sieving roll form the raw material. A roll screen comprising a plurality of material passages extending in a zigzag shape in a flow direction.

[0013] The invention according to claim 8 according to the present invention relates to the roll screen according to claim 7, wherein the rotating roller in each of the sieving rolls is located at each of the right and left sides with respect to the center position in the roll axis direction. Are characterized in that a plurality of rows are provided in the same diagonal direction and in a diagonal direction in a symmetrical relationship between the left and right sides. Also,
According to a ninth aspect of the present invention, in the roll screen according to the seventh aspect, the rotating rollers in each of the sieving rolls are circumferentially provided in the same oblique direction over the entire length of the roll shaft.

Further, the invention of claim 10 according to the present invention provides
The roll screen according to any one of claims 7 to 9, wherein the rotating roller is formed in an elliptical shape when viewed from a direction orthogonal to a diameter thereof, and the rotating roller is substantially formed when viewed from a roll axis direction. It is characteristically circular.

Further, the invention of claim 11 according to the present invention provides:
The roll screen according to any one of claims 7 to 10, wherein a rubber layer is formed on a surface of the rotating roller.

Further, the invention of claim 12 according to the present invention provides:
The roll screen according to any one of claims 7 to 11, wherein a sieving roll having the rotating roller and a sieving roll not having the rotating roller are alternately arranged. Features.

Further, the invention of claim 13 according to the present invention provides:
Regarding the roll screen according to claim 12, the upper end of the rotating roller of the sieving roll having the rotating roller and the upper side surface of the outer peripheral surface of the sieving roll without the rotating roller are in the same plane. It is characterized by being arranged so as to be located.

Further, the invention of claim 14 according to the present invention provides:
14. The roll screen according to any one of claims 7 to 13, wherein a plurality of the sieving rolls are inclined upward and forward so as to be higher toward a flow direction side of the raw material, and a flow of the raw material. A roll drive mechanism for gradually increasing the peripheral speed of the sieving roll toward the direction side is provided.

According to the roll screen formed of the sieving roll according to the present invention, a plurality of rows of raw material passages extending in a zigzag manner in the flow direction of the raw material are formed in the roll axial direction along with the rotation of each rotary roll. In order to meander while moving laterally, instead of making the flow of the raw material in one direction back and forth, the direction will be changed in a zigzag shape of the horizontal swing, and as a result, the raw material will be sieved while being rubbed,
Even if the raw material is viscous or has a high water content under bad conditions, the effect of crushing and decomposing is obtained without forming balls on the roll screen, and sieving and dispensing can be performed reliably and efficiently.

According to the roll screen of the tenth aspect of the present invention formed from the sieving roll of the fifth aspect of the present invention, the outer edge of the rotating roller is rotated by the rotation of the sieving roll. Since the flow of the raw material is improved without largely swinging toward and away from the main body, the processing efficiency of the raw material is improved. Further, according to the roll screen of the invention of claim 11 of the present invention formed from the sieving roll of the invention of claim 6 of the present invention, the frictional resistance is large and the flow of the raw material is further improved. The processing efficiency is further improved.

According to the roll screen of the present invention, the rough stone in the raw material is prevented from being caught between the sieving roll having a rotating roller and the sieving roll having no rotating roller. In addition, since the trip of the roll driving device and the crushing of the raw stone in the raw material are eliminated, the stable operation of the roll screen becomes possible. Further, according to the roll screen of the invention of claim 13 of the present invention, since the step on the upper surface of the roll is small, the flow of the raw material is improved, and the processing efficiency of the raw material is improved. Furthermore, according to the roll screen of the invention of claim 14 according to the present invention,
While it is possible to surely move the original stone large lumps, raw materials from easily staying on the roll screen, sieving and dispensing it is possible to more reliably and efficiently performed.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments 1 to 3 of the present invention will be sequentially described below with reference to the accompanying drawings.

FIG. 1 is an elevation view of a crane vehicle for treating construction-generated soil according to Embodiment 1 of the present invention, and FIG. 2 is a partially enlarged view of a roll screen of the crane vehicle shown in FIG. A plan view is shown.

The crane vehicle 1 shown in FIG.
A hydraulic crane 2, a generator 3, and a harding mixer 4 are mounted on the dancer from the dancer to the rear, and a receiving hopper 6 with a built-in roll screen 5 in the upper stage above the generator 3, and a belt feeder in the lower stage. 7 are respectively mounted. Above the harding mixer 4, a solidifying agent hopper 8 is mounted on an upper stage, a circle feeder 9 is mounted on a middle stage, and a screw feeder 10 is mounted on a lower stage. Raw materials such as lumps generated at a construction site are received on a receiving hopper 6. When it is put in, it is sieved and discharged by the roll screen 5 in the receiving hopper 6, and crushed.
The soil (disassembled / crushed) and dropped downward is sent to the harding mixer 4 via the belt feeder 7. Reference numeral 19 denotes a crushing cutter provided in the receiving hopper 6.

Referring to FIGS. 1 and 2, the structure of the roll screen 5 will be described.
Is for sieving and dispensing the raw materials,
A plurality of sieving rolls (hereinafter, referred to as roller-equipped rotary rolls) 11 composed of rotating rolls are formed by being arranged in parallel with respect to each other at predetermined intervals, and each axis is orthogonal to the flow direction of the raw material. As a whole, it is provided to be inclined backward and downward.

Each of the roller-equipped rotary rolls 11 of the roll screen 5 is provided with a plurality of plate-shaped rotary rollers 12 inclined at a predetermined pitch in the roll axis direction with respect to the roll axis direction having a center in the radial direction. In addition, an inclined circumferential groove 13 having the same width is formed between each rotating roller 12. Less than,
A specific example of the structure of the roller-equipped rotating roll 11 is as follows. The outer diameter is 119.5 mmφ, and the roll length is about 1050 mm.
The inclined circumferential groove 13 having a groove width of 74.5 mm and a groove depth of 21.6 mm, which is inclined at an angle of 45 ° in the axial direction at both right and left sides distributed from the center in the roll axis direction, with respect to the roller-equipped rotary roll 11. FIG. 2 shows one formed in three rows. In the present invention, the inclination angle of the rotating roller 12 with respect to the roll axis direction is set to a fixed angle within a range of 30 ° or more and less than 90 ° in accordance with the properties of the raw material.

In the case of the roll screen 5, however, the inclined circumferential grooves 13 between the rotating rollers 12 of the rotating roller with rollers 11 are formed in the same diagonal direction on the left and right sides, respectively, and on the left and right sides. The sections are provided in oblique directions having different symmetrical relations. In addition, the rotating roll 11 with a roller in which the groove width becomes extremely wide in the center portion, that is, the first, third, and fifth rows from the upper side of the flow direction of the raw material (open arrow line B) in FIG. Has a structure in which a central rotating roller 18 perpendicular to the roll axis is provided at the central part in the roll axis direction so that the groove width can be balanced.

The roll screen 5 using the roller-equipped rotating rolls 11 having the above-described configuration is composed of the first, third, and fifth odd-numbered rows of roller-equipped rotating rollers 11 and the second, fourth, and fourth rollers from the upper side. Six even-numbered rotating rollers 11 with rollers
And the inclined circumferential groove 13 is displaced in the axial direction by half of the groove width, and the phase angle 180 with respect to the rotation direction of the arrow A.
The roll screen for sieving and discharging the raw material is constituted by arranging the raw material in a direction parallel to the axis so as to be shifted by an angle of °. By doing so, the gap 1 formed by the inclined circumferential groove 13 of the rotating roll 11 with roller and the inclined circumferential groove 13 of the rotating roll 11 with roller adjacent thereto is formed.
4 form a plurality of material passages extending in a zigzag manner in the flow direction of the material. Each of the gaps 14 serves as a “sieve” for sifting powdery soil in the raw material smaller than the gaps 14.

The rotary rolls 11 with rollers are supplied with rotational power from motors 17A and 17B via a chain 16 meshed and wound around a sprocket 15 which is axially attached to the shaft end. Simultaneous rotation of indicated line A is performed.

Next, the operation of the roll screen 5 will be described. The raw material (not shown) put into the receiving hopper 6 is supplied onto the roll screen 5. Since the rotating rolls 11 with rollers of the roll screen 5 are rotating, the ore in the raw material larger than the gap 14 between the inclined circumferential grooves 13 is conveyed and dispensed through a plurality of zigzag-shaped raw material passages. Is done. On the other hand, the ore and dust in the raw material smaller than the gap 14 fall from the gap 14 while passing through each raw material passage, are sieved, supplied to the belt feeder 7, and separated from the ore.

In this case, a plurality of rows of raw material passages extending in a zigzag manner in the flow direction of the raw material (open arrow B) meanwhile move laterally in the roll axis direction with the rotation of the rotating rolls 11 with rollers. As a result, the effect of sieving is increased, so that even if the raw material is viscous or has a high water content under poor conditions, it does not bead on the roll screen 5, so that the effect of crushing and decomposition can be obtained. As a result, sieving and payout can be reliably and efficiently performed.

FIG. 3 is a plan view of a roll screen according to the second embodiment of the present invention. Illustrated Embodiment 2
Is similar to the first embodiment shown in FIG.
Corresponding members have the same reference characters allotted, and their description will not be repeated here.

The roll screen 5 according to the second embodiment is characterized by a structural feature that, of the plurality of rotating rolls with rollers 11 constituting the roll screen, the majority of the rotating rolls 11 on the superior side are: A plate-like rotary roller 12 inclined at, for example, 45 ° with respect to the roll axis direction.
Are provided at a predetermined pitch in the roll axis direction, so that the rotating rolls with rollers 11 having the inclined circumferential grooves 13 of the same width formed between the rotating rollers 12 are used. Gap 14 formed by the inclined circumferential groove 13 of the rotating roll 11 with a roller adjacent to the inclined circumferential groove 13 of the roller 11
Thus, a plurality of material passages extending in a zigzag manner in the flowing direction of the material are arranged.

On the other hand, the lower side has a structure similar to the second conventional example, and has a circumferential groove 32 formed between a plurality of rotating rollers 31 provided in a direction perpendicular to the roll axis direction. Using a rotating roll 30 with a roller having
The circumferential grooves 32 adjacent before and after in the flow direction of the raw material are arranged in a staggered arrangement. Note that reference numeral 33 denotes a gap that serves as a “sieving eye”.

The roll screen 5 having such a structure
The operations of sieving and paying out at the front stage corresponding to the majority of the rotatable roll groups with rollers in the above are the same as those in the first embodiment. Embodiment 2
Since the inclined circumferential groove 13 is provided in the same direction and at the same angle for each roller-equipped rotating roller 11, a rotating roller having the same shaft structure can be used, and the cost of the apparatus due to the interchangeability of parts and the common use of parts. There is an advantage that can be down.

In the roll screen 5 of the second embodiment, the entirety of the rotating rolls 11 with rollers forming the roll screen 5 are formed by inclined circumferential grooves 13 inclined in the same direction with respect to the roll axis direction. A plurality of rows are formed at a predetermined pitch in the axial direction, and a gap 14 formed by the inclined circumferential groove 13 of the rotating roller 11 with each roller and the inclined circumferential groove 13 of the adjacent rotating roller 11 with the roller is provided. Needless to say, a configuration in which a plurality of raw material passages extending in a zigzag manner in the flow direction of the raw material are arranged may be employed.

FIG. 4 is a plan view of a roll screen according to Embodiment 3 of the present invention, FIG. 5 is a cross-sectional view of a rotating roller, and FIG. 6 is a diagram of a rotating roll with a roller having a rotating roller and a rotating roller. An explanatory diagram of an arrangement state with a rotating roll which is not shown is shown. Since the third embodiment is similar to the rotating roll with roller on the upper side in the second embodiment shown in FIG. 3, the corresponding members are denoted by the same reference numerals, and mainly the differences are described. explain.

That is, in the roll screen 5 according to the third embodiment, the roller-equipped rotary roll 11 having the rotary roller 12 and the rotary roll 21 having no rotary roller 12 constituting the roll screen 5 alternately. The upper end of the rotating roller 12 of the rotating roller with roller 11 is supported by the support shaft of the rotating roller with roller 11 supported at a position below the supporting axis of the rotating roller 21. The upper surface of the outer peripheral surface is configured to be located on the same plane.

Each of the plurality of rotating rollers 12 of each of the rotating rollers with rollers 11 is formed in an elliptical shape when viewed from a direction perpendicular to the roller diameter, and is formed into a circular shape when viewed from the roll axis direction. They are arranged obliquely in the same direction with respect to the axial direction. In addition, on the surface of each rotating roller 12,
As shown in FIG. 5, a rubber layer 12a made of, for example, NBR or a rubber containing various compounding agents and additives is formed.
An inclined circumferential groove 13 having the same width is formed between the rotating rollers 12, and a gap 1 is formed between the inclined circumferential groove 13 of the rotating roller 11 with each roller and the outer peripheral surface of the adjacent rotating roll 21.
By configuring 4, a plurality of raw material passages extending in the flow direction of the raw material are configured. In the third embodiment,
As in the case of the second embodiment, a rotating roll having the same shaft structure can be used, and there is an advantage that the cost of the apparatus can be reduced due to the interchangeability and common use of parts.

Of course, as shown in FIG. 2 according to the first embodiment, the inclined circumferential grooves 13 between the rotating rollers 12 of the rotating roller with rollers 11 are formed in the same oblique direction on each of the right and left sides. Alternatively, a configuration may be adopted in which the symmetrical relationship is provided between the left and right sides in different oblique directions. Further, as shown in FIG. 3 according to the second embodiment, on the good side, rotating rollers 11 with rollers having rotating rollers 12 inclined in a certain direction with respect to the roll axis direction are alternately arranged in the opposite direction. On the lower side, a configuration in which a roller-equipped rotating roll 30 having a plurality of rotating rollers 31 in a direction perpendicular to the roll axis direction may be used.

The roll screen 5 according to the third embodiment is rotated by a roll drive mechanism including a motor, a chain 16 and a sprocket, as in the first or second embodiment. Specifically, the rotating rolls 11 with rollers are rotated by the same motor, and the rotating rolls 21 are rotated by the same other motor via the chain 16 and the sprocket 15 around which the chain 16 is wound. The diameter of the sprocket is set such that the peripheral speed of the rotating roll 11 with rollers and the peripheral speed of the rotating roll 21 gradually increase as they move toward the flow direction of the raw material. Is set.
Although a motor, a chain, and a sprocket are used as the roll drive device in the third embodiment, a prime mover (engine) and a gear train may be used, or noise can be further reduced in place of the chain, sprocket, or gear train. A simple timing belt and a toothed pulley may be used.

More specifically, as can be clearly understood from FIG. 4, the rotating rolls 11 with rollers and the rotating rolls 21
A large-diameter sprocket 15 and a small-diameter sprocket 15 are fitted to each end, and the rotating rolls 11 with rollers adjacent to each other with the rotating rolls 21 therebetween,
In each of the rotating rolls 21 adjacent to each other with the roller-equipped rotating roll 11 interposed therebetween, a chain 16 wound around a large-diameter sprocket 15 on the raw material flow base side and a small-diameter sprocket 15 on the raw material flow direction side. It is hung.

The roll screen 5 having such a structure
The operation and effect of the sieving and dispensing of the raw material by the roller-equipped rotating roll 11 and the rotating roll 21 are described in the roll screen sieving and dispensing according to the first embodiment and the second embodiment. Functions and effects substantially similar to those in the case are obtained, but are different in the following points.

The roll screen 5 according to the third embodiment
In the embodiment, each of the plurality of rotating rollers 12 of each rotating roller with rollers 11 is formed in an elliptical shape when viewed from a direction perpendicular to the roller diameter, and is configured to be substantially circular when viewed from the roll axis direction. Therefore, the outer edge of the rotation roller 12 is rotated by the rotation of the rotation roller
Since the flow of the raw material is improved without approaching and separating from the main body (for example, based on the upper surface of the main body), the processing efficiency of the raw material is improved. Since the rubber layer 12a is formed and the frictional resistance is larger than when the surface is made of metal, the flow of the raw material is further improved, and the excellent effect that the processing efficiency of the raw material is further improved is obtained.

Further, the rotating roll with roller 11 having the rotating roller 12 and the rotating roll 2 having no rotating roller are provided.
1 are alternately arranged such that the upper edge of the rotating roller 12 of the rotating roller with roller 11 and the upper side surface of the outer peripheral surface of the rotating roller 21 are located in the same plane. And the peripheral speed of the rotating roll 21 are:
In each case, the speed is set to gradually increase as the flow direction of the raw material is increased. As a result, rough stones are less likely to be caught between the rotating rolls 11 with rollers and the rotating rolls 21, and tripping of the motor as a driving mechanism and crushing of the rough stones are eliminated, thereby enabling a stable operation of the roll screen, and The action of lifting the rough stone in the raw material by the roll on the downstream side in the flow direction of the raw material acts more strongly than the pressing action of the roller adjacent to the upstream side of the roll, so that the rough stone is more effectively prevented from being caught. Further, the peripheral speed of the roller with a rotating roll 11, since the peripheral speed higher flow direction of the raw material the peripheral speed of the rotating roll 21 is high speed, while it is possible to surely move the original stone large mass, the rollers Since the attached rotating roll 11 and each rotating roll 21 are inclined upward and forward so as to be higher toward the flow direction of the raw material,
Since raw materials are easily accumulated on a roll screen, sieving and dispensing it is possible to more reliably and efficiently performed.

Although not shown in the above-described embodiments of the present invention, the outer periphery of the partition wall between the inclined circumferential grooves 13 and the adjacent inclined circumferential grooves 13 in the rotating roll 11 with rollers is not shown. On the surface, for example, it is also possible to have a structure in which a number of wart-like projections are provided, whereby a further crushing effect of the raw material is obtained, so that further sorting and supply can be achieved, This is the preferred embodiment.
Although not shown, it is also possible to provide a vibration generating means for imparting a fine vertical vibration to the roll 11 with rollers of the roll screen 5 on the roll screen main body or each roll, thereby further sieving and dispensing. It can be performed effectively.

[0047]

According to the sieving roll and the roll screen according to the first to fourteenth aspects of the present invention, the inclined circumferential groove of the sieving roll is formed to be inclined with respect to the roll axis direction. By this, it is possible to change the flow of the processing raw material such as soil generated from construction on the roll screen in a zigzag direction instead of in one direction, and as a result, the raw material is formed into balls in a lump on the roll screen. The effect of dispersing without dispersing and the effect of crushing are fully exhibited, and sieving and dispensing can be performed reliably and efficiently, and the amount of raw materials supplied to the next process is reduced, and the capacity of the raw material processing equipment is effectively used. There are advantages to use.

Further, according to the sieving roll and the roll screen according to the fourth and ninth aspects of the present invention, since the sieving roll having the same shaft structure can be used, the roll screen can be used because of interchangeability of parts and sharing. There is an advantage that the running cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an elevation view of a crane vehicle for treating construction-generated soil according to Embodiment 1 of the present invention.

FIG. 2 is a partially enlarged plan view of a roll screen in the crane vehicle shown in FIG.

FIG. 3 is a plan view of a roll screen according to Embodiment 2 of the present invention.

FIG. 4 is a plan view of a roll screen according to Embodiment 3 of the present invention.

FIG. 5 is a sectional view of a rotating roller of a roll screen according to Embodiment 3 of the present invention.

FIG. 6 is an explanatory diagram of an arrangement state of a rotating roll with a roller having a rotating roller of a roll screen and a rotating roll without a rotating roller according to Embodiment 3 of the present invention.

FIG. 7 is a plan view of a roll screen according to Conventional Example 1.

FIG. 8 is a plan view of a roll screen according to Conventional Example 2.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Crane vehicle 2 ... Hydraulic crane 3 ... Generator 4 ... Harding mixer 5 ... Roll screen 6 ... Receiving hopper 7 ... Belt feeder 8 ... Solidifying agent hopper 9 ... Circle feeder 10 ... Screw feeder 11 ... Sieving roll (rotation with roller) Roll), 12
... Rotating roller, 12a ... Rubber layer, 13 ... Sloped circumferential groove, 1
4 gap, 15 sprocket, 16 chain, 17
A, B: Motor, 18: Central rotating roller, 19: Crushing cutter 21: Rotating roll 25: Roll screen, 30: Sieving roll
(Rotating roll with roller), 31: rotating roller, 32: circumferential groove, 33: gap

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kiyoshi Tsune 2-3-1, Shinhama, Araimachi, Takasago City, Hyogo Prefecture Inside Takasago Works, Kobe Steel Co., Ltd. No. 1 F term in Kobe Steel, Ltd. Takasago Works (reference) 4D021 AA01 AA03 AB12 AC03 AC08 BA12 CA11 DA05 EA05 EB01

Claims (14)

[Claims] 1. A roll for forming a roll screen by arranging at a predetermined interval in a flow direction of raw materials, wherein a rotating roller inclined with respect to a roll axis passing through a center in a radial direction of the roll is provided in a roll axis direction. A sieving roll, comprising a plurality of rolls provided at a predetermined pitch. 2. The sieving roll according to claim 1, wherein an inclination angle of the rotating roller with respect to a roll axis is a fixed angle within a range of 30 ° or more and less than 90 °. 3. The rotating roller is provided on the left and right sides in the same diagonal direction and on the left and right sides in a symmetrical diagonal direction based on the center position in the roll axis direction. The sieving roll according to claim 2, characterized in that: 4. The sieving roll according to claim 2, wherein said rotary roller is provided in the same diagonal direction over the entire length of the roll shaft. 5. The rotary roller according to claim 1, wherein said rotary roller is formed in an elliptical shape as viewed from a direction perpendicular to its diameter, and said rotary roller is substantially circular as viewed from a roll axis direction. The sieving roll according to any one of the above items. 6. The sieving roll according to claim 1, wherein a rubber layer is formed on a surface of the rotating roller. 7. A sieve in which a plurality of rotating rollers inclined at a predetermined angle within a range of 30 ° or more and less than 90 ° with respect to a roll axis passing through the center of the roll in the radial direction are provided at a predetermined pitch in the roll axis direction. Rolls are arranged at predetermined intervals in the flow direction of the raw material, and a plurality of raw material passages extending in a zigzag manner in the flow direction of the raw material by inclined circumferential grooves formed between a plurality of rotating rollers of each sieving roll. The roll screen characterized by comprising. 8. The rotating rollers in each of the sieving rolls are arranged in the same diagonal direction in each of the left and right sides, and in the diagonal direction in a symmetrical relationship between the left and right sides, based on the center position in the roll axis direction. The roll screen according to claim 7, wherein the roll screen is arranged in a row. 9. The roll screen according to claim 7, wherein the rotating rollers in each of the sieving rolls are provided in the same diagonal direction over the entire length of the roll shaft. 10. The rotating roller is formed in an elliptical shape when viewed from a direction perpendicular to the diameter thereof, and the rotating roller is substantially circular when viewed in a roll axis direction. The roll screen according to any one of the above. 11. The roll screen according to claim 7, wherein a rubber layer is formed on a surface of the rotating roller. 12. The sieving roll provided with the rotating roller and the sieving roll not provided with the rotating roller are alternately arranged. The roll screen according to the item. 13. The sieving roll having the rotating roller is disposed such that the upper end of the rotating roller and the upper surface of the outer peripheral surface of the sieving roll not having the rotating roller are located in the same plane. The roll screen according to claim 12, wherein the roll screen is formed. 14. A plurality of said sieving rolls are arranged in an inclined manner so as to rise forward toward the flow direction of the raw material, and the peripheral speed of the sieving roll is gradually increased toward the flow direction side of the raw material. 14. A roll driving mechanism for increasing the speed is provided.
The roll screen according to any one of the above.