JP2011156446A - Gypsum board breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gypsum board breaker which can separate a broken gypsum which is obtained by efficiently crushing and finely breaking the gypsum board from broken paper pieces under a simple constitution with a reduced number of components, and also, can realize the curtailing of an initial cost and a running cost, with the inhibition of generation of noise and dust and the resultant avoiding of worsening of operating environments. <P>SOLUTION: The gypsum board crusher includes one of the crushing/breaking roll 3 which crushes and breaks the gypsum board starting with its face, with the outer circumferential surface of the roll 3 shaped like a hand drum, and the other crushing/breaking roll 4 which crushes and breaks the gypsum board starting with its back, with the outer circumferential surface shaped like a hand drum. In addition, the crushing/breaking rolls 3 and 4 are arranged opposite to each other through an arcked gap 13 formed and sandwiched between the outer circumferential surfaces of the crushing/breaking rolls 3 and 4 on the first surface 12 spanning the axes C1 and C2 by shortest distance. Further, the gypsum board is sent into the arcked gap 13 along the third surface 15 which inclines to the other crushing/breaking roll 4 side at a sharp angle θ2 with the second surface 14 which is orthogonal with the first surface 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gypsum board crushing apparatus, and more specifically, crushing gypsum board that can be efficiently crushed and separated into finely crushed gypsum and paper fragments by a simplified structure. Relates to the device.

  Conventionally, gypsum boards used for building interior construction and the like have been normally landfilled as industrial waste because the remaining materials and scrap cannot be diverted to others. However, recently, the law has been revised, and the “Construction Recycling Law for Recycling Materials Related to Construction Work” has complicated the procedure for treating industrial waste, and there has been a requirement for separate disposal. It has become necessary to recycle waste gypsum board and other resources.

As this type of gypsum board crushing apparatus, for example, a gypsum board pulverizing and sorting apparatus described in Patent Document 1 has already been proposed. This device consists of a pair of crushing rolls that compress both sides of the gypsum board with a hardened plate-like gypsum as a core material and paper attached to the front and back, and from one end to the other end of the peripheral surface. A crushing roll having a pair of separating rolls having a pin that is spirally planted at a predetermined interval and crushing the gypsum board from both the front and back sides, and separating means for separating the crushed material of the gypsum board into paper and crushed gypsum Is configured to send the gypsum board toward the separation roll, and the separation roll is configured to send the crushed material toward the separation means, and further includes a first sieve, a second sieve, a funnel body, a shield body, and a rotating spiral body. Etc.

  According to the gypsum board pulverization separation processing device having the above-described configuration, when the gypsum board is fed between a pair of crushing rolls, the gypsum board is compressed from both the front and back sides, and the core material portion is broken and relatively finely crushed. Peeling from the part is promoted. On the other hand, the paper portion is not torn and is fed toward the pair of separation rolls while maintaining a continuous shape. Also, the gypsum board fed between the pair of separation rolls is torn and torn by the pins, and both the gypsum crushed material and the paper fragments fall on the first sieve, where Is further crushed, torn, and stirred, and the gypsum crushed material is shattered and sent over the first sieve toward the dropping port, during which the gypsum powder passes through the sieve hole of the first sieve, Fall towards the body. At that time, the gypsum powder is blocked from entering the second sieve by the shield.

  On the other hand, the crushed material mainly made of paper that has advanced on the first sieve while separating the gypsum powder enters the second sieve from the dropping port, and is further stirred by the rotating spiral body. It proceeds on the second sieve while separating, and most of it becomes a piece of paper and is discharged and collected from the discharge port to the container. Meanwhile, the gypsum powder separated through the sieve hole of the second sieve falls into the funnel and is sent to another discharge port by the rotating spiral together with the gypsum powder dropped from the first sieve, which is suitable for recycling. It is discharged and collected as a gypsum powder in a separate container. As a result, the gypsum board is said to be a device that can pulverize and separate the gypsum board in compliance with the Construction Recycling Law concerning the recycling of materials related to construction work.

JP 2001-137726 A

  By the way, in the gypsum board pulverization separation processing apparatus described in Patent Document 1, only the gypsum part is destroyed by a pair of crushing rolls to promote separation from the paper part, and the paper part is sent without tearing. By receiving the first step and the crushed gypsum part and the paper part sent out from the pair of crushing rolls with a pair of separation rolls, and piercing and tearing the gypsum part and the paper part with the pins of the separation roll The gypsum board is pulverized by passing through a second step of separating the crushed gypsum and paper fragments.

  As described above, the conventional gypsum board pulverization / separation processing apparatus requires the first and second steps for pulverizing and separating the gypsum board, so that the pulverization and separation efficiency is poor. In addition, since a pair of crushing rolls and a pair of separation rolls for carrying out these steps are required, the number of components increases and the apparatus becomes large. Therefore, not only the initial cost of the apparatus becomes high, but also a high output motor that drives the pair of crushing rolls and the pair of separation rolls individually and simultaneously is necessary. Thereby, since power consumption becomes large and energy saving operation is hindered, there is a problem that the running cost of the apparatus becomes high. Moreover, in the second step, when the gypsum part and the paper part are pierced and torn by the pin of the separation roll and separated into the gypsum crushed material and the paper piece, a relatively high noise and dust are generated, and the working environment It also has problems that adversely affect the system.

  The present invention solves such a problem, and its object is to reduce the number of parts, reduce the size and simplify the structure, and crush the gypsum board efficiently to make it finely crushed. Providing a gypsum board crushing device that can be separated into crushed gypsum and paper fragments, reduces initial costs and running costs with low power, and suppresses noise and dust generation to avoid deterioration of the work environment. There is to do.

  In order to achieve the above object, a gypsum board crushing apparatus according to the invention of claim 1 comprises a pair of crushing rolls for crushing and crushing the gypsum board from both the front and back surfaces, and the outer peripheral surface of one crushing crushing roll is It is formed in a drum shape that is reduced in diameter with a predetermined curvature from the axial center to both ends thereof, and the outer peripheral surface of the other crushing roll is formed in a drum shape that is expanded in diameter from the axial center to both ends thereof The crushing rolls are arranged opposite to each other via an arc-shaped gap formed between the outer peripheral surfaces of the crushing crushing rolls on the first surface connecting the respective axes at the shortest distance. The gypsum board is fed into the arc-shaped gap along a third surface inclined at an acute angle with respect to the second surface orthogonal to the first surface toward the other crushing and crushing roll. Made up of It is characterized in.

  According to this, when the gypsum board is fed into the arc-shaped gap formed on the first surface by the outer peripheral surfaces of the pair of crushing and crushing rolls, the thickness of the gypsum is somewhat larger than the gap between the arc-shaped gaps. The board is subjected to a compressive force in the thickness direction by the outer peripheral surface of each crushing and crushing roll, and a bending force for bending the arc into an arc corresponding to the arc-shaped gap. In one crushing roll, the compressive force in the thickness direction acts in a direction perpendicular to the tangent of the curvature forming the outer peripheral surface thereof, that is, in a direction spreading outward toward the other crushing roll side. The second crushing roll is dispersed in the compression force of 1 and acts in the direction perpendicular to the tangent of the curvature forming the outer peripheral surface thereof, that is, in the direction narrowing inward toward the one crushing roll side. It is converged by the compression force. In addition, a bending force to bend the gypsum board in an arc shape corresponding to the arc-shaped gap acts on the gypsum board from the center line in the thickness direction to the region on the one crushing roll side. A third compressive force acts, and a tensile force acts from the center line in the thickness direction to the other crushing roll side region.

  Further, since the gypsum board is fed into the arc-shaped gap along the third surface inclined at an acute angle with respect to the second surface orthogonal to the first surface toward the other crushing roll, the arc-shaped gap Bending force acts on the boundary between the portion fed into the arc and the portion immediately before being fed into the arc-shaped gap, and resistance occurs in feeding the gypsum board 2 into the arc-shaped gap 13.

  The hardened plaster gypsum that forms the core material of gypsum board has low elasticity, low tensile strength, compression strength, bending strength, etc., and is bonded to the front and back of the core material. Paper has the property of low tensile strength. Accordingly, the cured plate-like gypsum and paper are subjected to a bending force and a moment including a compressive force in the thickness direction including the first and second compressive forces and a third compressive force and a tensile force. The resistance caused by the combination of the two will act simultaneously, and the gypsum board is efficiently crushed from both the front and back sides, and the gypsum part that is the core material is crushed finely, and the gypsum that is the core material As the portion is finely crushed, it can be easily separated into a piece of paper in which the paper portion has been torn.

  In this way, the gypsum board crushing apparatus according to the invention of claim 1 is a pair of crushing and crushing rolls including one crushing and crushing roll whose outer peripheral surface is drum-shaped and the other crushing and crushing roll whose outer peripheral surface is drum-shaped. In other words, the crushing rolls face each other through an arc-shaped gap on the first surface while having a simplified structure with a reduced number of parts compared to a conventional device. And placing the gypsum board into the arc-shaped gap along the third surface inclined toward the other crushing and crushing roll at an acute angle with respect to the second surface orthogonal to the first surface. The board can be efficiently crushed and separated into finely crushed gypsum and paper pieces. Moreover, as a drive source for the pair of crushing and crushing rolls, a low-output electric motor can be applied, so that the initial cost and the running cost of the device can be reduced, and the generation of noise and dust can be suppressed. Deterioration can be avoided.

  The gypsum board crushing device according to the invention of claim 5 is a pair of crushing rolls for crushing and crushing the gypsum board from both the front and back surfaces, and a pair of crushing crushing rolls disposed below the pair of crushing rolls. Separating and collecting gypsum board crushing material that is crushed by a roll and separating it into paper fragments and crushing gypsum, and separately transferring and collecting the separated paper fragments and crushing gypsum. It is characterized by becoming.

  According to this, the crushed material of the gypsum board sent out from the pair of crushing and crushing rolls is received by the separation and transfer means and separated into the paper pieces and the crushed gypsum, and they are individually transferred to be separated. Can be recovered. As a result, it becomes possible to crush and separate the gypsum board in compliance with the Construction Recycling Law related to the recycling of materials related to construction work.

  According to the gypsum board crushing apparatus according to the present invention, the gypsum board is efficiently crushed by crushing gypsum board and finely crushed gypsum and paper fragments while having a reduced size and simplified structure. Can be separated. In addition, the simplified structure and the low-power motor can be applied as a drive source for the pair of crushing rolls, thereby reducing the initial cost and running cost, and reducing the generation of noise and dust and the work environment. Can be avoided.

1 is a front view showing an embodiment of a gypsum board crusher according to the present invention. It is a left view of FIG. It is a right view of FIG. It is an enlarged front view showing one embodiment of a pair of crushing crushing rolls. It is a perspective view which shows typically the relationship between the 1st surface which connects the axis line of each crushing roll by the shortest distance, the 3rd surface which guides the approach of a gypsum board, and a 1st surface, and a horizontal surface. It is an enlarged plan view showing one embodiment of a pair of upper rotating spirals. It is explanatory drawing which expands and shows typically the load form to the gypsum board sent into the circular arc-shaped clearance gap. It is sectional drawing which expands and shows the boundary of the part sent in the arc-shaped clearance gap of the gypsum board, and the part immediately before sending.

  Hereinafter, a gypsum board crushing apparatus according to the present invention will be described with reference to the drawings. 1 is a front view showing an embodiment of a gypsum board crusher according to the present invention, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a right side view of FIG. 1, and FIG. FIG. 5 is an enlarged front view showing an embodiment of the present invention, and FIG. 5 shows a first surface that connects the axes of the crushing rolls with the shortest distance, a third surface that guides the entry of the gypsum board, and the first surface and the horizontal surface. FIG. 6 is an enlarged plan view showing an embodiment of a pair of upper rotating spiral bodies.

  1 to 6, the gypsum board crusher 1 includes one crushing roll 3 and the other crushing crushing roll 4 for crushing and crushing the gypsum board 2 from both the front and back surfaces, and a separate transfer recovery means 5. The separating and collecting means 5 includes a bowl-shaped sieve 6, a pair of upper rotating spirals 7 and 8 including one upper rotating spiral 7 and the other upper rotating spiral 8, and one lower rotating spiral 9. And a reed 10 and one rotating helix 11.

  As shown in FIG. 4, the outer peripheral surface of one of the crushing and crushing rolls 3 has a curvature R with a curvature radius r that can set the outer diameter reduction ratio from the center 3a in the direction of the axis C1 to both ends 3b and 3b to 6%. Is formed in a drum shape, and the outer peripheral surface of the other crushing and crushing roll 4 has a curvature radius r that can set the outer diameter expansion rate from the center 4a in the direction of the axis C2 to both ends 4b and 4b to 6%. It is formed in a drum shape by R. In the present embodiment, the length between both ends 3b, 3b of the one crushing roll 3 in the direction of the axis C1 is about 680 mm, the radius of curvature r is about 19,600 mm, the outer diameter D of the center 3a is 100 mm, both ends The outer diameter D1 of each of 3b and 3b is 94 mm, the length between both ends 3b and 3b in the direction of the axis C2 of one crushing roll 4 is about 680 mm, the radius of curvature r is about 19,600 mm, and the outer diameter D of the center 4a Is 94 mm, and the outer diameters D1 of both ends 4b and 4b are 100 mm.

  As shown in FIG. 5, the first surface 12 connecting the horizontal axes C1 and C2 of the crushing and crushing rolls 3 and 4 with the shortest distance is inclined backward with respect to the horizontal surface 12a at an inclination angle θ1 = 30 °. The crushing rolls 3 and 4 are arranged to face each other via an arcuate gap 13 formed on the first surface 12 between the outer peripheral surfaces of the crushing crushing rolls 3 and 4. Has been. The crushing and crushing rolls 3 and 4 may be variable so that the interval of the gap 13 can be changed according to the thickness of the gypsum board 2, or may be fixed so that the interval cannot be changed. In addition, the third surface 15 is inclined toward the other crushing and crushing roll 4 at an inclination angle θ2 = 15 ° with respect to the second surface 14 orthogonal to the first surface 12, and along the third surface 15. A feeding guide 16 for feeding the gypsum board 2 into the arc-shaped gap 13 is provided.

  The bowl-shaped sieve 6 in the sorting and collecting means 5 is made of punched metal in which a large number of through holes (not shown) are formed in a staggered pattern at predetermined intervals, and is attached to and stored in the apparatus frame 18 via a drop guide plate 17. The crushing and crushing rolls 3 and 4 are disposed below. And the upper side inside the bowl-shaped sieve 6 has a second axis C3 parallel to the first axis (C1, C2) of the pair of crushing and crushing rolls 3, 4 in front view, The rotating spiral body 7 and the other upper rotating spiral body 8 are arranged adjacent to each other in the front-rear direction (the horizontal direction of FIGS. 2 and 3 in the paper surface direction of FIG. 1) on the same plane. It is comprised by the right-handed screw shaft, and the other upper side rotation spiral body 8 is comprised by the left-handed screw shaft. In addition, the inner lower portion of the bowl-shaped sieve 6 has a third axis C4 positioned immediately below the pair of upper rotating spiral bodies 7 and 8 and parallel to the second axis C3 of the pair of upper rotating spiral bodies 7 and 8. One lower rotating spiral 9 is arranged, and the lower rotating spiral 9 is constituted by a left-handed screw shaft.

  The gutter 10 is for receiving all of the crushed gypsum described later that has passed through a large number of through holes (not shown) of the gutter-shaped sieve 6. Placed in. At the bottom of the flange 10, there is disposed a single rotating spiral 11 having a fourth axis C5 parallel to the third axis C4 of the lower rotating spiral 9, and the rotating spiral 11 is formed by a right-handed screw shaft. It is configured.

  One crushing and crushing roll 3 is hung by a first electric motor 19 on a sprocket 19a fixed to the output shaft of the first electric motor 19, a sprocket 19b fixed to the roll shaft of the one crushing and crushing roll 3, and the sprockets 19a and 19b. The other crushing and crushing roll 4 is rotationally driven in the direction of arrow R1 through a power transmission system composed of the passed chain 19c, and the other crushing roll 4 is fixed to the output shaft of the second electric motor 20 by the second electric motor 20, and the other Is driven to rotate in the direction of arrow R2 through a power transmission system including a sprocket 20b fixed to the roll shaft of the crushing and crushing roll 4 and a chain 20c hung on each of the sprockets 20a and 20b.

  One upper rotating spiral 7 is hung on the sprocket 21a fixed to the output shaft of the third motor 21 by the third motor 21, the sprocket 21b fixed to the roll shaft of the one upper rotating spiral 7, and the sprockets 21a and 21b. It is rotationally driven in the direction of arrow R2 through a power transmission system composed of the passed chain 21c, and one gear 7a is fixed to the roll shaft on the opposite side of one upper rotating spiral body 7, and this gear 7a is fixed to the other upper side. By meshing with the other gear 8a fixed to the roll shaft of the rotating spiral 8, the other upper rotating spiral 7 is driven to rotate simultaneously in the direction of the arrow R3 as one upper rotating spiral 7 rotates.

  A sprocket 7b is fixed to the roll shaft of one upper rotating spiral 7 adjacent to the sprocket 21b, and a chain 9b is hung on the sprocket 7b and a sprocket 9a fixed to the roll shaft of the lower rotating spiral 9. By passing, the lower rotating spiral body 9 is simultaneously driven to rotate in the direction of the arrow R4 as the pair of upper rotating spiral bodies 7 and 8 rotate. Further, a sprocket 21 d is fixed adjacent to the sprocket 21 a fixed to the output shaft of the third electric motor 21, and the chain 11 b is spanned between the sprocket 21 d and the sprocket 11 a fixed to the roll shaft of the rotating spiral body 11. Thus, the rotating spiral body 11 is rotationally driven in the direction of the arrow R5 by the third electric motor 21.

  According to the gypsum board crushing device having the above-described configuration, the gypsum board 2 is formed on the outer peripheral surface of the pair of crushing crushing rolls 3 and 4 along the third surface 15 with the drop guide plate 17 as a guide. When fed into the arc-shaped gap 13 on the surface 12 (see FIG. 7), the gypsum board 2 having a thickness T2 (see FIG. 1 and FIG. 2) somewhat larger than the interval T1 of the arc-shaped gap 13 is A compressive force P1 in the thickness direction and a bending force P2 that attempts to bend in an arc shape corresponding to an arc-shaped gap act on the outer peripheral surfaces of the crushing and crushing rolls 3 and 4. The compressive force P1 in the thickness direction of the one crushing roll 3 is indicated by a broken line in the direction perpendicular to the tangent S of the curvature R forming the outer peripheral surface thereof, that is, toward the other crushing roll 4 side. In the other crushing and crushing roll 4, which is dispersed in the first compressive force p1 acting in the direction of spreading outward, the direction perpendicular to the tangent S of the curvature R forming the outer peripheral surface, that is, one crushing crushing As indicated by the one-dot chain line toward the roll 3, the second compressive force p2 acting in the direction narrowing inward is converged. In addition, a bending force P2 for bending the gypsum board 2 in an arc shape corresponding to the arc-shaped gap 13 acts, so that one crushing and crushing roll is applied to the gypsum board 2 from the center line Cx in the thickness direction. The third compressive force p3 acts on the region on the 3 side, and the tensile force f1 acts on the region on the other crushing and crushing roll 4 side from the center line Cx in the thickness direction.

  Further, as shown in FIG. 8, the gypsum board 2 has a third surface inclined to the other crushing roll 4 side at an inclination angle θ2 of 15 ° with respect to the second surface 14 orthogonal to the first surface 12. 15, the bending force acts on the boundary 22 between the portion fed into the arc-shaped gap 13 and the portion immediately before being fed into the arc-shaped gap 13. Resistance occurs in feeding the gypsum board 2 into the arc-shaped gap 13.

  The hardened plaster gypsum that forms the core of the gypsum board 2 has low elasticity, low tensile strength, compression strength, bending strength, etc., and is bonded to the front and back of the core. Paper has a characteristic of low tensile strength. Therefore, the cured plate-like gypsum and paper have the above-mentioned first. The compressive force P1 in the thickness direction including the second compressive forces p1 and p2, the bending force P2 including the third compressive force p3 and the tensile force f1, the resistance generated by the action of the moment M, and the like are simultaneously combined. The gypsum board 2 is effectively crushed from both the front and back surfaces, and the gypsum part that is the core material is finely crushed and the gypsum part that is the core material is finely crushed. Accordingly, the paper portion can be easily separated into pieces of paper that have been torn.

  Thus, the structure provided with only one pair of crushing and crushing rolls 3 and 4 consisting of one crushing and crushing roll 3 whose outer peripheral surface is a drum shape and the other crushing and crushing roll 4 whose outer peripheral surface is a drum shape, that is, conventional The crushing and crushing rolls 3 and 4 are arranged to face each other through an arcuate gap 13 on the first surface 12 while having a simplified structure with a reduced number of parts compared to the apparatus of FIG. The gypsum board 2 is moved along the arcuate gap 13 along the third surface 15 inclined to the other crushing roll 4 side at an inclination angle θ2 of 15 ° with respect to the second surface 14 orthogonal to the first surface 12. , The gypsum board 2 can be efficiently crushed and separated into finely crushed gypsum and paper fragments. In addition, since the two low-power electric motors 19 and 20 can be applied as the driving source for the pair of crushing and crushing rolls 3 and 4, the initial cost and the running cost of the apparatus can be reduced, and the generation of noise and dust can be suppressed. Work environment can be avoided.

  Since the inclination angle θ2 of the third surface 15 with respect to the second surface 14 is set to 15 °, a portion sent into the arc-shaped gap 13 and a portion immediately before being fed into the arc-shaped gap 13 Conditions for increasing the crushing and crushing efficiency to be applied to the gypsum board 2 immediately before crushing by causing an appropriate bending force to act on the boundary 22 and causing resistance to the feeding of the gypsum board 2 into the arc-shaped gap 13 Is ready. This facilitates the separation of the crushed gypsum that has been efficiently crushed and finely crushed, and the pieces of paper. On the other hand, when the inclination angle θ2 is less than 5 °, the bending force acting on the boundary 22 is reduced, and the feeding of the gypsum board 2 into the arc-shaped gap 13 is performed relatively smoothly. The conditions for improving the crushing and crushing efficiency of the gypsum board 2 immediately before crushing are impaired. Therefore, the ability to efficiently crush the gypsum board 2 and separate it into finely crushed gypsum and paper fragments is reduced. On the other hand, if the inclination angle θ2 exceeds 20 °, the bending force acting on the boundary 22 becomes too large, and the feeding resistance to the arc-shaped gap 13 of the gypsum board 2 becomes excessive. Conditions for increasing the crushing and crushing efficiency of the board 2 are impaired. Therefore, the ability to efficiently crush the gypsum board 2 and separate it into finely crushed gypsum and paper fragments is reduced.

  The inclination angle θ1 of the first surface 12 connecting the axes C1 and C2 of the pair of crushing fracture rolls 3 and 4 with respect to the horizontal surface 12a is set to 30 °, so that the gypsum board 2 is moved to the third by its own weight. 1 and 2, the gypsum board 2 can be thrown in from obliquely upward as shown in FIGS. 1 and 2, reducing the burden of the gypsum board 2 feeding work by the operator. Is done. On the other hand, if the rearward inclination angle θ1 is less than 25 °, the gypsum board 2 cannot be expected to be fed into the arc-shaped gap 13 due to its own weight, and the gypsum board 2 cannot be fed by the operator. On the other hand, when the rearward rising inclination angle θ1 increases and the second surface 14 approaches the third surface 15, the feeding of the gypsum board 2 into the arc-shaped gap 13 is increased, and the operator While the burden of sending the gypsum board 2 is reduced, the crushing force of the gypsum board 2 is weakened. However, when the rearward tilt angle θ1 exceeds 35 °, setting the gypsum board 2 becomes difficult.

  By setting the reduction ratio of the outer diameter of one crushing and crushing roll 3 and the expansion ratio of the outer diameter of the other crushing and crushing roll 4 to 6%, respectively, the arc-shaped gap 13 is formed with respect to the gypsum board 2. A bending force P2 suitable for bending in a corresponding arc shape and a compressive force toward the outside and the inside can be applied. Thereby, the function which crushes the gypsum board 2 efficiently and isolate | separates into the crushed gypsum finely crushed and a paper piece is improved. On the other hand, when the outer diameter reduction ratio and the outer diameter expansion ratio are each less than 3%, the bending force P2 for bending the gypsum board 2 into an arc shape corresponding to the arc-shaped gap 13 becomes extremely small. The function of efficiently crushing the gypsum board 2 and separating it into finely crushed gypsum and paper pieces is reduced. On the other hand, when the reduction ratio of the outer diameter and the expansion ratio of the outer diameter each exceed 8%, the flat gypsum board 2 becomes difficult to enter the arc-shaped gap 13 and the efficiency of the crushing operation is lowered.

  The gypsum board 2 is crushed and finely crushed by a pair of crushing and crushing rolls 3 and 4 each having a drum-shaped outer crushing roll 3 and a drum-shaped crushing crushing roll 4 having an outer peripheral surface. It is sent out as crushed material consisting of crushed plaster and paper fragments and falls. The crushed gypsum therein passes through the pair of upper rotating spiral bodies 7 and 8, the lower rotating spiral body 9 and the bowl-shaped sieve 6, and is received by the bowl 10 arranged below the bowl-shaped sieve 6. It is. On the other hand, the paper pieces sent out from the pair of crushing and crushing rolls 3 and 4 and dropped are received by the pair of upper rotating spiral bodies 7 and 8 and stirred by the upper rotating spiral bodies 7 and 8 to remove the adhering crushing gypsum. While being separated, the ink is transferred toward one F1 in the direction of the second axis C3 and discharged from one end thereof (the right end in FIG. 1). A piece of paper ejected and dropped from one end of the pair of upper rotating spiral bodies 7, 8 falls by interfering with a baffle plate 18 a attached to the inner surface of the apparatus frame 18 and is received by the bowl-shaped sieve 6. Then, it is stirred again by the lower rotating spiral 9 and transferred to the other F2 in the direction of the third axis C4 while separating the crushed gypsum still adhering. From the left end) and collected in the container 23. In this way, the pieces of paper sent out from the pair of crushing and crushing rolls 3 and 4 are first transported by the pair of upper rotating spiral bodies 7 and 8 toward one F1 in the direction of the second axis C3, and then the lower part. Since the transfer distance is extended by being transferred toward the other F2 in the direction of the third axis C4 by the side rotating helix 9, the adhered crushed gypsum is reliably separated in the extended transfer process, and almost Only pieces of paper can be discharged from the other end of the lower rotating spiral 9 and collected in the container 23.

  The crushed gypsum separated from the paper fragments in the process of being transferred by the pair of upper rotating spirals 7 and 8 and the lower rotating spiral 9 passes through the bowl-shaped sieve 6 and is received by the bowl 10. That is, the crushed gypsum fed from the pair of crushing and crushing rolls 3 and 4 and passing through the pair of upper rotating spiral bodies 7 and 8, the lower rotating spiral body 9 and the bowl-shaped sieve 8, and the pair of upper rotating spiral bodies 7 and 8 All the crushed gypsum together with the crushed gypsum separated from the paper debris in the process of being transferred by the lower rotating helix 9 is received by the cage 10. The crushed gypsum received by the ridge 10 is transferred toward one F1 in the direction of the fourth axis C5 by the rotating spiral body 11, and can be discharged from one end (right end in FIG. 1) and collected in the container 24. As a result, it becomes possible to crush and separate the gypsum board in compliance with the Construction Recycling Law related to the recycling of materials related to construction work.

  Gypsum board scrap generated during the manufacture of gypsum board, or waste gypsum board generated as building waste can be reused as resources in compliance with the Construction Recycling Law concerning the recycling of materials related to construction work. Separated into gypsum and paper and collected.

DESCRIPTION OF SYMBOLS 1 Crusher of gypsum board 2 Gypsum board 3 One crushing crushing roll 3a Axis center of one crushing crushing roll 3b Both ends of one crushing crushing roll in the axial direction C1 Axis of one crushing crushing roll 4 The other crushing crushing Roll 4a Axial center of the other crushing roll 4b Both ends of the other crushing roll in the axial direction C2 Axis of the other crushing roll 5 Sorting and collecting means 6 Sponge-shaped sieve 7 One upper rotating spiral C3 One Axis of upper rotating helix 8 Other upper rotating helix C3 Axis of other upper rotating helix 9 Lower rotating helix C4 Axis of lower rotating helix 10 １１ 11 Rotating helix C5 Axis of rotating helix 12 First surface 12a Horizontal plane 13 Circle Arc-shaped gap 14 Second surface 15 Third surface θ1 Tilt angle of rearward rise of first surface with respect to horizontal surface θ2 Third surface Inclination angle with respect to the second face of

Claims (6)

  It includes a pair of crushing and crushing rolls that crush and crush the plaster board from both the front and back surfaces, and the outer peripheral surface of one crushing and crushing roll is formed in a drum shape that is reduced in diameter with a predetermined curvature from the center in the axial direction to both ends thereof. The outer peripheral surface of the other crushing roll is formed in a drum shape whose diameter is expanded from the center in the axial direction to both ends thereof, and each crushing roll has a first surface that connects each axis with the shortest distance. It is disposed opposite to each other via an arc-shaped gap formed between the outer peripheral surfaces of the crushing and crushing rolls at an acute angle with respect to the second surface orthogonal to the first surface. The gypsum board crushing apparatus, wherein the gypsum board is fed into the arc-shaped gap along a third surface inclined toward the other crushing crushing roll. The gypsum board crushing apparatus according to claim 1, wherein an inclination angle of the third surface with respect to the second surface is set in a range of 5 ° to 20 °, preferably 15 °. 3. The gypsum board crushing apparatus according to claim 1, wherein the first surface connecting the axes of the crushing and crushing rolls is in a range of 25 ° to 35 °, preferably 30 ° with respect to a horizontal plane. A crusher for gypsum board that slopes backward. The gypsum board crushing device according to claim 1, claim 2, or claim 3, wherein the outer peripheral surface of the one crushing roll has an outer diameter from the axial center to the both axial ends of the one crushing roll. The diameter reduction ratio is formed by a curvature having a radius of curvature that can be set in a range of 3% to 8%, preferably 6%, and the outer peripheral surface of the other crushing roll is an axis from the axial center of the other crushing roll. An apparatus for crushing a gypsum board formed by a curvature having a radius of curvature capable of setting an expansion ratio of an outer diameter to both ends in a direction in a range of 3% to 8%, desirably 6%.   A pair of crushing and crushing rolls for crushing and crushing a gypsum board from both the front and back sides, and a piece of gypsum board that is disposed below the pair of crushing and crushing rolls and crushed and dropped by the pair of crushing and crushing rolls A gypsum board crushing apparatus, comprising: a separating and collecting means for separating and separating the separated paper pieces and the crushed gypsum separately and separately. The gypsum board crushing apparatus according to claim 5, wherein the separation transfer recovery means is disposed below the pair of crushing crushing rolls to allow passage of the crushing gypsum, and Arranged inside the sieve with a second axis parallel to the first axis of the pair of crushing and crushing rolls, transporting the paper waste in one direction of the second axis, and allowing the crushing gypsum to fall A pair of upper rotating spirals and a third axis parallel to the second axis below the pair of upper rotating spirals and being discharged from one end of the pair of upper rotating spirals and falling A lower rotating spiral body for receiving and transferring paper waste toward the other side in the third axial direction on the bowl-shaped sieve, and discharging and collecting the paper waste from the other end; and the lower side of the bowl-like sieve Receive all of the crushed gypsum that has been placed in the bowl-shaped sieve And the crushed gypsum received by the scissors arranged at the bottom of the scissors having a fourth axis parallel to the third axis, and transferred toward one side in the fourth axis direction, and from one end A gypsum board crushing device comprising a rotating spiral body that discharges and collects crushing gypsum.