JP2009150069A - Mixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing apparatus capable of mixing excavated wastes and conditioning materials with the occurrence of dust minimized regardless of the shape of lumps contained in the excavated wastes at the pretreatment of the sorting of buried wastes. <P>SOLUTION: The mixing apparatus 1 is provided with both an agitating means 1a comprising both a cylindrical member 11 and a plurality of vane members 12 fixed to an inner surface of the cylindrical member 11 at an angle to its center axis in such a way as to form space at a center part of the cylindrical member 11 and a transfer means 1b connected to one end of the cylindrical member 11 for supplying excavated wastes for the agitating means 1a. By the rotation of the cylindrical member 11 on its center axis, excavated wastes thrown in from one end are mixed with conditioning materials in the agitating means 1a and discharged from the other end of the cylindrical member 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mixing apparatus that mixes excavation waste and an improved material.

  In construction work, you may encounter buried waste or illegally dumped waste. In many cases, such waste contains reusable materials such as metal fragments and crushed stones. By recovering these reusable materials, waste volume reduction and resources can be recovered. Can be used effectively. In addition, reusable materials may be collected during excavation work of waste associated with proper closure of the final disposal site.

  In the case of reusing excavated waste (hereinafter sometimes referred to simply as “excavated waste”), the buried waste often has a high moisture content. In many cases, it is difficult to separate into other substances. For this reason, it is common for excavation waste having a high water content ratio to be subjected to pretreatment for reducing the water content ratio by mixing an improving material such as lime or cement and then to separation.

As a pretreatment construction method, a method of mixing excavation waste and improving material on the ground using a backhoe or the like is generally employed. In addition, for example, a method in which excavation waste and an improving material are introduced into a contaminated soil treatment apparatus including a mixing device including a screw conveyor as shown in Patent Document 1 and mechanically stirred and mixed may be employed. is there.
JP 2003-336283 A

  However, the former method of mixing the excavation waste and the improved material using the backhoe or the like is difficult to mix uniformly and is inefficient. Moreover, since there is a possibility that a large amount of dust may be generated during mixing, there is a problem in that it takes time to take measures for dust prevention such as watering or enclosing the work site by a dustproof sheet.

  In addition, the latter method using the contaminated soil treatment apparatus can suppress the generation of dust due to the agitation and mixing in the apparatus, but the agitation and mixing by the mixing apparatus constituted by the screw conveyor is not suitable for large concrete When the improvement material is agitated in excavation waste in which reinforcing bars and the like are mixed, there is a problem that these contaminants may get entangled in the apparatus or the apparatus may be damaged.

  It is an object of the present invention to solve the above-mentioned problems, and it is possible to generate dust without being influenced by the shape of the lump contained in the excavation waste during the pretreatment of the waste disposal. It is an object of the present invention to propose a mixing device that enables mixing of excavation waste and improved material in a state where the amount of waste is minimized.

  In order to solve the above problems, the invention according to claim 1 is fixed to the inner surface of the cylindrical member obliquely with respect to the central axis so that a space is formed in the central portion of the cylindrical member and the cylindrical member. A stirring device comprising: stirring means having a plurality of blade members; and transporting means connected to one end of the cylindrical member and supplying excavation waste to the stirring means, wherein the cylindrical member is a central axis By rotating around, the excavation waste introduced from the one end is mixed with the improving material in the stirring means and discharged from the other end of the cylindrical member.

Such a mixing device agitates the drilling waste and the improving material inside the cylindrical member, so that it is possible to reduce the moisture content of the drilling waste while minimizing the generation of dust.
In addition, the cylindrical member has a space for inserting excavation waste and the like in the middle portion, and the entire apparatus has a simple structure, so that it is easy to increase the strength. Therefore, even when the excavation waste includes large concrete glass and reinforcing bars, the apparatus can be configured such that the apparatus is not damaged and the excavation waste is not entangled with the apparatus.

  In the mixing apparatus, if the stirring means is inclined with respect to a horizontal axis within a range of 5 ° to 10 ° so that the one end of the stirring means is higher than the other end, excavation is performed. It is preferable because the waste is slowly moved to the other end side by gravity while being stirred.

Further, in the mixing apparatus, the excavation waste and the improvement material can be obtained by performing at a rotational speed N <29.9 / r ^0.5 (rpm) of the agitation means at the time of agitation and mixing of the excavation waste and the improvement material It is good also as a structure which aims at homogenization of mixing. Here, r is the inner diameter of the cylindrical member.

  Further, in the mixing device, the plurality of blade members include a feed blade that feeds the drilling waste charged into the stirring unit to the other end side, and a stirring blade that scrapes up the drilling waste. Thus, it may be configured to homogenize the mixing of the drilling waste and the improvement material.

  According to the mixing apparatus of the present invention, in the pretreatment for the reuse of buried waste, the generation of dust is minimized without being influenced by the shape of the contaminants contained in the excavation waste. In addition, mixing of drilling waste and improved material becomes possible.

Preferred embodiments of the present invention will be described with reference to the drawings. In the description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.
This embodiment demonstrates the case where the mixing apparatus which concerns on this invention comprises some excavation waste separation facilities.

  As shown in FIGS. 1 and 2, the excavation waste separation facility according to the present embodiment includes a mixing device 1 that performs pretreatment of excavation waste, and the excavation waste subjected to the pretreatment into concrete rags, reinforcing bars, and the like. Of separation device 2 for separating (separating) into a large shape material and a small shape material such as earth and sand, silo 3 for storing an improving agent to be input during pretreatment of excavation waste, It comprises a carry-out conveyor 4 that conveys small-shaped objects to a material storage area, and a support base 5 that supports the mixing device 1 and the separation device 2.

  As shown in FIG. 1 and FIG. 2, the mixing apparatus 1 is disposed on a support base 5, and includes a stirring means 1a for stirring and mixing the drilling waste and the improving material, and a drilling waste in the stirring means 1a. And a conveying means 1b for supplying the improved material.

  As shown in FIGS. 3 and 4, the agitation means 1 a includes a cylindrical member 11 and a plurality of blade members 12 and 12 fixed to the inner surface of the cylindrical member 11 so that a space is formed at the center of the cylindrical member 11. ...

  As shown in FIG. 3, the cylindrical member 11 is a cylindrical steel pipe having a circular cross-section with both ends open, and a belt conveyor 13 is connected to one end (input port 11 a), and the other The end (discharge port 11b) is connected to the separation device 2 (see FIGS. 1 and 2).

The cylindrical member 11 is disposed on the support base 5 so as to be able to rotate around the central axis of the cylindrical member 11. The rotation of the cylindrical member 11 is rotated within a range of a rotational speed N <29.9 / r ^0.5 (rpm) by power applied by a rotating means (not shown). Note that r is the inner diameter of the cylindrical member 11. The rotation direction of the cylindrical member 11 is not limited, and may be clockwise or counterclockwise.

  As shown in FIG. 2, the cylindrical member 11 has a central axis inclined in accordance with the inclination of the support base 5 within the range of the inclination angle θ of 5 ° to 10 °, and stirring of the excavated sediment and the improvement material is performed. Along with the mixing, the excavation waste flows down in the direction of the discharge port 11b due to gravity.

  In addition, the shape dimension of the cylindrical member 11, the material which comprises the cylindrical member 11, etc. are not limited, It is possible to set suitably. Moreover, the cylindrical member 11 does not necessarily need to incline, and the range of the inclination angle θ is not limited to the above range. Further, the rotational speed of the cylindrical member 11 is not limited to the above speed.

  As shown in FIGS. 4A and 4B, the blade members 12, 12,... Are plate-like members, and have five rows in the central axis direction on the inner surface of the cylindrical member 11, and the circumferential direction in each row. 4 sheets are fixed in total, 20 sheets in total. As shown in FIG. 4B, each blade member 12 is fixed in a state where the plate surface is inclined with respect to the central axis of the cylindrical member 11.

  In the present embodiment, as the blade member 12, the feed blade 12 a that feeds the drilling waste charged into the cylindrical member 11 from the input port 11 a toward the discharge port 11 b, and the stirring blade that scrapes the drilling waste inside the cylindrical member 11 12b, 12c.

  The feed blade 12a is a blade member 12 for feeding the excavated waste and the improved material, which are input to the cylindrical member 13 by the belt conveyor 13, in the direction of the discharge port 11b. As shown in FIG. Compared to the blades 12b and 12c, it is formed in a larger shape. In the present embodiment, the inclination angle φa of the feed blade 12a with respect to the central axis of the cylindrical member 11 is about 35 °. The inclination angle φa and the inclination direction of the feed blade 12a are appropriately set according to the processing capacity of the excavation waste by the cylindrical member 11, the rotation direction of the cylindrical member 11, and the like.

  The agitation blades 12b and 12c agitate the excavation waste and the improvement material by scraping the excavation waste and the improvement material fed into the cylindrical member 13 with the rotation of the cylindrical member 11 by the feed blade 12a. Promote. In this embodiment, as shown in FIG. 4B, the stirring blades 12b and 12c are formed in a smaller shape than the feed blade 12a. Further, the inclination angles φb and φc of the stirring blades 12b and 12c with respect to the central axis of the cylindrical member 11 are set to about 45 °. In addition, the stirring blade 12c disposed closest to the discharge port 11b is inclined in the opposite direction to the other stirring blades 12b in order to improve the stirring efficiency of the excavated waste and the improved material.

  The shape, the number, the arrangement, and the inclination angles φa, φb, and φc of the blade member 12 are not limited to the above contents and can be set as appropriate. Further, the direction of inclination of the stirring blades 12b and 12c is not limited and can be set as appropriate. For example, the stirring blades 12b and 12c having different inclination directions may be arranged in order.

  As shown in FIG. 3, the conveying means 1b is connected to one end of the cylindrical member 11, and conveys the excavated waste to the agitating means, and one end side of the belt conveyor 13 (opposite to the cylindrical member 11 side). And a hopper 14 disposed above the side), and the excavation waste is put into the hopper 14 by a backhoe or the like so that the excavation waste is conveyed to the cylindrical member 11 by the belt conveyor 13. Has been.

  The hopper 14 according to this embodiment includes a skirt portion 14a formed of a rubber plate or the like at a lower portion, and a window 14b is formed in the skirt portion 14a. The skirt portion 14 a is in close contact with the belt conveyor 13, and spillage when the excavation waste put into the hopper 14 is supplied to the belt conveyor 13 is prevented. The excavation waste thrown into the hopper 14 is quantitatively supplied by limiting the amount (height) supplied to the belt conveyor 13 by the window 14b.

  The width and extension of the belt conveyor 13 are not limited, and may be appropriately set according to the processing capacity of the cylindrical member 11, the amount of excavation waste, the scale of the excavation waste separation facility, It is desirable to let the tip end enter the cylindrical member 11. Moreover, what is necessary is just to set the shape of the hopper 14, etc. suitably. Further, the means for quantitatively supplying the excavated waste is not limited to that by the window 14b formed in the hopper 14, and can be set as appropriate.

  The silo 3 stores the improved material to be thrown into the drilling waste. As shown in FIG. 1 and FIG. 2, in this embodiment, two types of improvement materials are thrown into excavation waste, and two silos 3 are arranged. These silos 3 include a silo body 31 that stores the improved material, and a screw conveyor 32 that extends from the silo body 31 to above the belt conveyor 13 and conveys the improved material to the belt conveyor 13. ing.

  Although the improving agent mixed with the drilling waste is not limited, lime, cement, gypsum, bentonite and the like can be suitably used. Moreover, although this embodiment demonstrates the case where two types of improvement materials are mixed, the number of improvement materials is not limited, For example, 1 type may be sufficient and 3 or more types may be sufficient. Moreover, it is not necessary to use two types of improvement materials simultaneously, and according to the state of excavation waste, you may use one type each. Moreover, the shape of the silo body 31 and the method for supplying the improving material from the silo body 31 to the belt conveyor 13 are not limited and can be set as appropriate.

  Separation device 2 separates excavation waste whose water content ratio has been reduced by mixing device 1 into a large shape object such as concrete glass or reinforcing bar and a small shape material such as earth and sand. Do.

  As shown in FIG. 2, the separation device 2 according to the present embodiment includes a trommel 21 that is a cylindrical rotary sieve, and a scattering prevention metal fitting that is fixed to a discharge port of the trommel 21 and prevents scattering of a large object. 22, a belt conveyor 23 disposed below the trommel 21 and transporting a small shape discharged from the sieve of the trommel 21 to the carry-out conveyor 4, and installed at the end of the belt conveyor 23. The anti-scattering metal fitting 24 for preventing the scattering of objects is provided.

  Although the form of the trommel 21 is not limited, in the present embodiment, a steel rod having steel rods arranged at equal intervals along the rotation axis direction is used. The trommel 21 rotates in synchronization with the cylindrical member 11, and the steel bar is configured to vibrate with rotation. Note that the mesh size (interval between the steel bars) of the trommel 21 is not limited, and can be set freely, for example, 120, 240, 260 mm or the like.

Further, the trommel 21 is inclined at the same inclination angle θ as that of the cylindrical member 11, and the excavation waste thrown from the cylindrical member 11 is configured to move toward the scattering prevention metal fitting 22.
In addition, the shape etc. of the scattering prevention metal fittings 22 and 24 are not limited, What is necessary is just to set suitably.

  The belt conveyor 23 conveys waste (earth and sand) that has passed through the mesh of the trommel 21 (between steel bars) and dropped, and is disposed below the trommel 21. A scattering prevention metal fitting 24 is installed at the conveyance direction and the end point (the left end portion in FIG. 2) of the belt conveyor 23 to prevent the earth and sand from scattering when the earth and sand are transferred to the carry-out conveyor 4. A member for preventing the excavation waste from spilling down may be disposed on the starting side of the belt conveyor 23 (the right end portion in FIG. 2).

  The carry-out conveyor 4 is a belt conveyor that carries out small-sized objects out of excavated waste separated by the separation device 2 to a material storage area. As shown in FIGS. 1 and 2, the carry-out conveyor 4 is disposed at a position corresponding to the end point (the anti-scattering hardware 24) of the belt conveyor 23.

  In this embodiment, as shown in FIG. 1, the material storage is arranged on the side of the support 5, and each carry-out conveyor 4 is arranged in a direction orthogonal to the central axis of the cylindrical member and the trommel 21. Yes. Note that the direction of the carry-out conveyor 4 is not limited and can be set as appropriate. Moreover, it is good also as a structure which arrange | positions the carrying-out conveyor 4 continuously several belt conveyors according to the distance to a material storage place. Moreover, the carrying-out method of a small-shaped thing is not limited, It is possible to use a well-known carrying-out means suitably.

  The support 5 supports the mixing device 1 and the separation device 2 and is used as a scaffold for workers who operate the mixing device 1 and the separation device 2. The support 5 is made of a steel plate or the like, and an opening 51 is formed at a location corresponding to the lower side of the trommel 21 as shown in FIGS. Through this opening 51, the small-shaped object separated by the trommel 21 falls directly onto the belt conveyor 23. The support 5 is also formed with an opening 52 at a location corresponding to the anti-scattering metal fitting 22 disposed at the outlet of the trommel 21, and the large-sized object carrying-out conveyor 4 separated by the trommel 21. It is configured to be able to supply to.

  The cylindrical member 11 and the trommel 21 disposed on the upper surface of the support base 5 are rotatably supported via a support tool 53. In the drawings, reference numeral 54 denotes a handrail installed for the purpose of ensuring the safety of workers.

  Further, below the opening 52 (scattering prevention metal fitting 22) formed in the support base 5, a clot holder 55 for accommodating a large-sized object among the excavated waste separated by the separating device 2 is disposed. The large-sized object dropped from the opening 52 can be temporarily stored. The large-sized object stored in the clot holder 55 is appropriately transported to the material storage site by unloading means such as an excavator dozer. In addition, although the structure of the earth lump receptacle 55 is not limited, in this embodiment, what was formed in the box shape with the steel plate is used. Moreover, the carrying-out method of a large shape thing is not limited, It can convey using a well-known carrying-out means suitably.

  Next, a procedure for separating excavation waste by the excavation waste separation facility S according to the present embodiment will be described.

  First, the drilling waste is put into the hopper 14 using a backhoe or the like. The excavation waste thrown into the hopper 14 is gradually dropped onto the belt conveyor 13 by the hopper 14 whose discharge port has a reduced diameter, and is quantitatively conveyed to the cylindrical member 11 via the belt conveyor 13.

  Along with the conveyance of excavation waste by the belt conveyor 13, two kinds of improvement materials are taken out from the silos 3 and 3 by the screw conveyor 32 and supplied onto the belt conveyor before the stirring means 1 a. In this embodiment, it is assumed that the total of the two types of improvement material is within a range of 0 to 50% with respect to the soil contaminated with excavation waste. It is not limited to.

The excavation waste is put into the cylindrical member 11 together with the improved material supplied before the stirring means 1a.
Here, in this embodiment, the introduction of the improved material is detected by the detector 15 installed above the belt conveyor 13 and the presence or absence of the excavation waste conveyed by the belt conveyor 13 is detected. In such a case, the improvement material is supplied, and when it is not detected, the screw conveyor 32 is controlled so as not to supply the improvement material. Note that the configuration of the detector 15 is not limited, and may be appropriately selected from known detectors such as a detector including a rotary switch and an encoder, a proximity sensor, and a load meter. Furthermore, it is good also as a structure which detects the quantity of excavation waste with the detector 15, and determines the supply amount of an improved material.

  The cylindrical member rotates around the central axis of the cylindrical member 11 to mix and agitate the excavation waste and the improved material. The excavation waste and the improved material thrown into the cylindrical member 11 are uniformly fed by being repeatedly fed up by the stirring blades 12b and 12c and dropped by the weight after being fed into the cylindrical member 11 by the feed blade 12a. Mixed.

Further, since the cylindrical member 11 is inclined within the range of the inclination angle θ of 5 ° to 10 °, the cylindrical member 11 gradually moves toward the discharge port 11b due to the synergistic effect of the pushing force by the stirring blades 12b and 12c and gravity. To do. Here, the cylindrical member 11 is sufficiently mixed and stirred until the excavation waste reaches the discharge port 11b by rotating at a rotation speed N of less than 29.9 / r ^0.5 (rpm). It is configured as configured.

  The excavation waste in which the improved material is uniformly mixed by the mixing device 1 is put into the separation device 2 directly connected to the discharge port 11b.

  The excavation waste thrown into the separation device 2 is sieved into a large shape and a small shape by the trommel 21, the large shape is stored in the earth block 55, and the small shape is transferred to the material storage site by the carry-out conveyor 4. Be transported.

  As described above, according to the mixing apparatus of the present embodiment, the cylindrical member 11 that performs agitation and mixing of the excavation waste and the improvement material has the blade member 12 on the inner surface of the cylindrical member 11 so that a large space is formed at the center. Therefore, even if a large concrete glass or a long object such as a reinforcing bar is mixed in the excavation waste, it is possible to perform stirring and mixing without catching these materials.

  Moreover, since the mixing device 1 has a simple structure and can easily increase the strength, the mixing device 1 can be configured to have a high strength according to the shape of the mixture such as concrete glass. For this reason, it is possible to prevent the mixture from being damaged.

  In addition, since the excavation waste and the improvement material are mixed in the cylindrical member 11, the improvement material does not rise due to wind or the like, and it is possible to suppress the generation of dust. Therefore, the trouble of covering the entire facility with dust-proof means can be omitted.

  By configuring the cylindrical member 11 in a large shape, it is possible to level the inside of the cylindrical member 11 without strictly controlling the supply amount of the drilling waste, and the mixing of the drilling waste and the improvement material is uniform. Can be done.

As mentioned above, although the example of suitable embodiment was demonstrated about this invention, this invention is not limited to the said embodiment, A design change is possible suitably in the range which does not deviate from the meaning of this invention.
For example, in the above-described embodiment, by connecting the cylindrical member and the trommel, the excavation waste in which the improvement material is mixed by the mixing device and the water content ratio is adjusted to decrease is directly input to the separation device. It may be carried out and loaded outside, or it may be carried out by a dump truck or the like, and the mixing device and the separating device are not necessarily connected.

  Moreover, in the said embodiment, although the improvement material stored in the silo shall be mechanically supplied via a screw conveyor, the supply method of an improvement material is not limited, For example, human power by an operator You may supply with.

Moreover, in the said embodiment, although the mixing apparatus and the separation apparatus shall be arrange | positioned on a support stand, the installation location of a mixing apparatus and a separation apparatus is not limited.
Moreover, in the said embodiment, although it was set as the structure which inclines the support stand itself, a support stand is good also as a horizontal.

  Further, in the above embodiment, the case where the improvement material is automatically input using the detector has been described. However, a configuration in which the worker grasps the amount of excavation waste visually and supplies the improvement material manually. It is good.

FIG. 5 shows a specific example in which the trommel 21 can be sorted into three sizes of large shape, medium shape, and small shape, and attached excavation waste can be sorted by removing the deposit. FIG. In the trommel 21, a rotary drum 23 is rotatably supported on the machine frame 100, and a main body portion of the rotary drum 23 is formed by a plurality of inner rods 24. A sieving gap t ₁ (see FIG. 6) is formed between the plurality of rods 24. Further, the first cylindrical portion 25, the second cylindrical portion 26, and the third cylindrical portion 27 are sequentially provided at regular intervals from the raw material inlet side of the rotating drum 23 to the end thereof, and the first to the first cylindrical portion 25, the second cylindrical portion 26, and the third cylindrical portion 27 are sequentially provided. A first rod mounting member 28, a second rod mounting member 29, and a third rod mounting member 30 having an annular shape are fixed to the outer periphery of each third cylindrical portion 25-27. One end of the inner rod 24 is attached to the inner side of the first rod attachment member 28, and the other end is attached to the inner side of the third rod attachment member 30 through the second rod attachment member 29. A main frame 40 constituting the skeleton of the rotary drum 23 is attached between the first rod attachment member 28 and the third rod attachment member 30 with a predetermined distance from the inner rod 24. The main frame 40 also passes through the second rod attachment member 29. Further, the main frame 40 is arranged on the circumference so that 4 to 8 cylindrical objects are equally spaced. Further, an outer rod 41 constituting the outermost periphery is attached between the first rod attachment member 28 and the second rod attachment member 29. A predetermined interval is also provided between the outer rod 41 and the main frame 40 so that the gap between the outer rods 41 (screening gap t ₂ ) is narrower than the gap between the main frames 40. It is arranged on the circumference.

  In the illustrated embodiment, the innermost inner rod 24 and the outermost outer rod 41 are configured to be movable in the radial direction and to rotate. Forced movable plates 42 and 43 are brought into contact with both ends of the inner rod 24 and the outer rod 41, respectively. These forced movable plates 42 and 43 are attached to the machine frame 100 via attachment members 42 ′ and 43 ′, and are provided along an arc at a position below the rotary drum 23. As shown in FIG. 6, the forcible movable plates 42 and 43 are formed in the corrugated portion W at the portions contacting the both ends of the rods 24 and 41, and both ends of the rods 24 and 41 are rotated so as to trace the corrugated portion W. As the drum 23 rotates, it is forcibly moved one after another.

  In FIG. 6, long-diameter bearing holes 44 that are long in the radial direction are respectively provided where the first to third rod mounting members 28 to 30 support both end sides of the inner rod 24 and the outer rod 41. Is formed. Both end sides of each rod 24, 41 are movable in the bearing hole 44. When the rods 24 and 41 are positioned at the locations where the forced movable plates 42 and 43 are installed by the rotation of the rotary drum 23, the rods 24 and 41 move up and down in the radial direction as shown in FIG. (Vibrates) and then rotates. It is preferable that the forcible movable plates 42 and 43 are installed such that the corrugated portion W continues from a short time before the rotating drum 23 is directly below to a position where it is raised about 1/3 from directly below. The forcible movable plates 42 and 43 preferably occupy 2/3 to 3/4 of the lower half arc of the rotary drum 23, and more preferably 3/4.

  FIG. 7 shows another trommel 21, which is not provided with the forced movable plates 42 and 43 like the trommel 21 shown in FIGS. 5 and 6, and such a trommel 21 is shown in FIGS. This embodiment is applied to the embodiment shown in FIG. The main body portion of the rotary drum 23 that is rotatably supported is formed by a plurality of lots 101 interposing a sieving gap in a direction substantially parallel to the center line, and both ends of these rods 101 are movably supported in the bearing holes 44. is doing. The rotating drum 23 is rotatably supported by the support roller 102, and when the rotating drum 23 rotates in the direction of the arrow, the rotating drum 23 passes from just before reaching the directly below position to just before reaching the horizontal position through the immediately below position. The motion generating means 103 is provided. The rolling generation means 103 is configured by arranging a plurality of rotating rollers 104 at equal intervals on an arc that is approximately a quarter of the rotation locus of the rotating drum 23. In other words, the means 103 is provided so as to occupy approximately one half of the lower half arc of the rotating drum 23. In the illustrated example, the rolling generation means 103 is configured by arranging a plurality of rotating rollers 104 at equal intervals. The bearing hole 44 is formed in an elliptical or rectangular shape that is long in the radial direction of the rotary drum 23, and the lateral width is slightly larger than the diameter of the rod 101 that fits in the bearing hole 44, and the radial length is the length of the rod 101. The rod 101 is slightly longer than twice the diameter, and the rod 101 rolls in the bearing hole 44. In order to increase the amount of vibration by increasing the amount of movement of the rod 101 in the radial direction, the radial length of the bearing hole 44 may be further increased and the diameter of the rotating roller 104 may be increased. Further, the support roller 102 and the rolling generation means 103 are attached to the machine frame 100.

It is a top view which shows the outline of the excavation waste separation facility which concerns on suitable embodiment of this invention. It is a longitudinal cross-sectional view which shows the excavation waste separation facility shown in FIG. It is a perspective view which shows the outline of the mixing apparatus which concerns on suitable embodiment of this invention. It is a figure which shows the cylindrical member of the mixing apparatus shown in FIG. 3, Comprising: (a) is a cross-sectional view, (b) is a longitudinal cross-sectional view. A simplified side sectional view of the trommel. Enlarged part where a forced movable plate is provided. A simplified cross-sectional view of another trommel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mixing apparatus 1a Stirring means 1b Conveying means 11 Cylindrical member 12 Blade | wing member 12a Feeding blade 12b, 12c Stirring blade 13 Belt conveyor 2 Separating device 21 Trommel S Drilling waste separation facility θ Inclination angle

Claims (4)

Stirring means having a cylindrical member and a plurality of blade members fixed obliquely with respect to the central axis on the inner surface of the cylindrical member so that a space is formed in the central portion of the cylindrical member, and at one end of the cylindrical member A mixing device that is connected and comprises conveying means for supplying excavation waste to the stirring means,
When the cylindrical member rotates around the central axis, the excavation waste introduced from the one end is mixed with the improving material in the stirring means and discharged from the other end of the cylindrical member. Features mixing device.   The said stirring means is inclined with respect to a horizontal axis within a range of 5 ° to 10 ° so that the one end of the stirring means is higher than the other end. Mixing equipment. The mixing apparatus according to claim 1 or 2, wherein the stirring means rotates at a rotational speed of N <29.9 / r ^0.5 (rpm).   The plurality of blade members include a feed blade that feeds the excavation waste put into the agitation means to the other end side, and an agitation blade that scrapes up the excavation waste. The mixing apparatus according to any one of claims 1 to 3.

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