JP2006021188A - Apparatus for supplying viscous soil and apparatus for reforming viscous soil utilizing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus which is for treating viscous soil having a high water content like sedimentary soil of rivers, bottom deposited soil of lakes, and soil from dredging, and which is particularly used for quantitatively supplying the recovered viscous soil to a treating process such as reforming the viscous soil, and meanwhile to provide an apparatus for reforming the viscous soil using the above viscous soil supplying apparatus. <P>SOLUTION: The viscous soil supplying apparatus 1A comprises a holder 2 possessing an upper and lower openings and charged with the viscous soil A through the upper opening, a pair of rotatable pressing plates 3 forming a part of the inside wall of the holder 2 and pivotally secured at the lower end to press the viscous soil in the holder 2, and a pair of rotors 4 rotating for cutting and dropping the bottom part of the viscous soil A in the holder 2 onto a supplying conveyor C1. The viscous soil supplying apparatus can quantitatively and continuously supply the viscous soil A having the high water content to the treating process. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is an apparatus for viscous soil having a high water content ratio, such as river sediment, lake bottom soil, dredged soil, etc., and the viscosity recovered when performing such treatment as modification to such viscous soil The present invention relates to a viscous soil supply device used for quantitatively supplying soil to a treatment process, and further relates to a viscous soil reforming device using the viscous soil supply device.

  In general, viscous soils having a high water content such as river volume soil, lake bottom soil, and dredged soil have a very low supporting capacity, and of course cannot be used as it is for the ground of building structures. Therefore, in soil improvement such as improvement of soil generated by construction and soil improvement, the above-mentioned viscous soil is mixed with a modifying material such as cement and lime, and the cohesive soil is solidified to enhance the bearing capacity. ing.

  The viscous soil referred to here includes, for example, a soil structure called a honeycomb structure, and has a water content ratio (the water weight expressed as a percentage of the weight of the soil particle substantial part) of about 50 to 200%. More specifically, when loading is performed using a power shovel, even if the bucket is turned upside down, all have properties that do not easily fall.

  By the way, in order to reform the clay, it is necessary to mix a certain amount of clay soil and a certain amount of modifier so that the reforming can be performed uniformly. It is important to supply the cohesive soil quantitatively to the reforming process. On the other hand, as a conventional supply device for quantitatively supplying earth, for example, the earth thrown in from the upper side is pulled out by a belt conveyor, and an opening having a size determined by calibration (adjustment of belt speed and opening section) is used. Some of them were continuously fed quantitatively through the section.

  However, with the conventional supply device as described above, it is difficult to quantitatively supply viscous soil having a high water content ratio, although it is possible to quantitatively supply soil such as earth and sand. That is, when clay soil is introduced into a conventional supply device, the clay soil adheres to the inner wall of the device, and a certain amount of clay soil cannot be continuously dropped from the opening, and the clay soil gradually decreases. In the meantime, a phenomenon occurs in which a cavity is formed inside the viscous soil and the upper part thereof remains in an arch shape. Therefore, it is difficult to quantitatively supply the viscous soil due to the presence of the cavity.

  The present invention has been made in view of the above-described conventional situation, and an object thereof is to provide a viscous soil supply device capable of continuously and quantitatively supplying viscous soil having a high water content ratio. An object of the present invention is to provide a viscous soil reformer capable of realizing uniform reforming of a viscous soil by mixing a fixed amount of the viscous soil and a certain amount of a modifier as a viscous soil reformer using the apparatus.

  The viscous earth supply device of the present invention is an apparatus for quantitatively supplying viscous soil charged from the outside of the apparatus onto a supply conveyor, and includes a container that is opened up and down and into which viscous soil is charged from above, and a container. A pressing plate that forms a part of the inner wall of the container and rotates about the lower end side to press the viscous soil in the container, and a rotor that cuts the bottom of the viscous soil in the container onto the supply conveyor as it rotates. As a more preferred embodiment, the container includes a fixing member that forms a large number of scissor slits on its inner wall, and a pressing plate is rotatably provided in each slit. However, the reciprocating rotation causes the inside of the container to project and retract, and the rotation range of the pressing plate is such that the width of the fixing member is equal to the width of the pressing plate in the rotation direction. The rotor is within the added range, A plurality of supports disposed at predetermined intervals on the axis of the horizontal rotation shaft and rotating together with the rotation shaft, and a plurality of rods disposed at predetermined intervals in the rotation direction of each support and installed between the supports; It is characterized by having a linear cutter.

  Further, a viscous soil reforming apparatus using the viscous soil supply apparatus of the present invention includes the above-described viscous soil supply apparatus, and is an apparatus for reforming the viscous soil quantitatively supplied from the viscous soil supply apparatus, and is supplied in a fixed quantity. Reformer supply device that supplies the reformed material to the viscous soil, mixing device that mixes the viscous soil and the reformer supplied from the supply conveyor, and the viscous soil that has dropped from the mixing device is received and transferred to the outside of the device It is characterized by having an unloading conveyor.

  Furthermore, the viscous soil reforming apparatus using the viscous soil supply apparatus of the present invention is, as a more preferable embodiment, for the addition in which the reforming material supply apparatus conveys the reforming material quantitatively supplied from the reforming material supply source. A conveyor, and a supply means for supplying the reforming material from the addition conveyor to the viscous soil on the supply conveyor. Characterized in that it has a pointed head extending from the lower end of the feed conveyor in the direction opposite to the conveying direction and passing at least the upper layer portion of the viscous soil being conveyed to both sides of the cylindrical portion. A substantially horizontal rotating shaft, and a plurality of stirring members arranged at a plurality of locations along the circumferential direction and the axial direction of the rotating shaft and rotating together with the rotating shaft. It is a member that can be deformed in the rotational direction. Further, the supply conveyor, the addition conveyor, and the carry-out conveyor are arranged in a state where the respective drive shafts are parallel to each other and overlap each other, and the conveyance direction of the carry-out conveyor with respect to the mixing device and A part of the supply conveyor is opposed to one side in the counter-conveying direction, and a part of the addition conveyor is opposed to the other side and the upper side. It is characterized by having a scraper that scrapes off the cohesive soil adhering during mixing on the carry-out conveyor.

  According to the viscous soil supply device of the present invention, when the viscous soil introduced from the outside of the device is supplied onto the supply conveyor, the viscous soil in the container is periodically pressed with a pressing plate, thereby the inside of the viscous soil. Cavities can be prevented from occurring, and even if cavities occur, this can be eliminated, and the operation of continuously cutting off the bottom of the viscous soil with the rotor can be performed on the supply conveyor. The clay soil can be continuously supplied in a fixed quantity.

  Moreover, according to the viscous earth supply apparatus of this invention, since the fixing member which forms many slits of a ridge, and many press plates which rotate in each slit were employ | adopted, each press plate is inside a container. By pressing the viscous soil by protruding the cavities, it is possible to prevent the formation of cavities inside the viscous soil, and the adhesive force of the viscous soil to the inner surface of the container by projecting and retracting each pressing plate Can be reduced to promote the descent of the clay. Thereby, viscous soil is smoothly supplied to the rotor side, and more reliable quantitative supply can be realized.

  Furthermore, according to the viscous earth supply device of the present invention, since the rotation range of the pressing plate is set based on the width of the pressing plate and the fixing member, the pressing plate that reaches the protrusion limit and the immersion limit is separated from the fixing member. In such a case, it is possible to prevent a situation where the viscous soil leaks to the outside of the container.

  Furthermore, according to the viscous earth supply device of the present invention, since the rotor including the support body and the rod-shaped cutter that rotate together with the rotating shaft is adopted, the resistance when cutting the viscous earth is small, and the viscous earth can be easily and In addition to being able to be surely cut off, the rotor does not hinder the fall of the viscous soil cut by the rotor, and can contribute to the stable quantitative supply of the viscous soil.

  According to the viscous soil reforming apparatus using the viscous soil supply apparatus of the present invention, since the above-mentioned viscous soil supply apparatus, the modifier supply apparatus, the mixing apparatus, and the carry-out conveyor are adopted, a certain amount of the viscous soil and a certain amount are maintained. A uniform amount of clay can be achieved by mixing a certain amount of modifier, and the process from the recovery of clay to the removal of the clay can be performed continuously with a single device. .

  Further, according to the clay soil reforming apparatus of the present invention, the reforming material can be continuously and quantitatively supplied by the reforming material supply apparatus having the addition conveyor and the supply means. Since the supply means provided with the head is adopted, at least the upper layer portion of the viscous soil conveyed by the supply conveyor is divided into right and left, and the modifier is supplied between them. Since the left and right viscous soil that passed through falls inside and keeps the modifier in a confined state, the clay and modifier can be introduced into the mixing device while preventing the modifier from being scattered, and the mixing device Can contribute to sufficient mixing.

  Furthermore, according to the viscous soil reforming apparatus of the present invention, in the mixing device having a substantially horizontal rotating shaft and a plurality of stirring members, the continuously supplied viscous soil is finely dispersed by the stirring member that rotates in a bowl. Thus, the mixing with the modifier can be performed more uniformly.

  Furthermore, according to the viscous soil reforming apparatus of the present invention, by using a member that can be deformed in the rotational direction as the stirring member, the viscous soil and the modifying material are hit like a whip to further improve the mixing performance of both. be able to.

  Furthermore, according to the viscous soil reforming apparatus of the present invention, the supply conveyor and the addition conveyor are disposed so as to surround the rotating circumferential surface of the mixing apparatus, and the scrapers are provided on both conveyors, so that the mixture is scattered in the mixing apparatus. The viscous soil adheres to the supply conveyor and the addition conveyor, and the viscous soil can be scraped off on the carry-out conveyor and conveyed to the outside of the apparatus, so that loss of the viscous soil in the apparatus can be reduced. At the same time, it is possible to prevent a situation in which the viscous soil adhered to the supply conveyor and the addition conveyor is increased and solidified.

FIG. 1 is a view for explaining an embodiment of a viscous soil supply apparatus according to the present invention.
A viscous soil supply device 1A shown in FIGS. 1 (a) and 1 (b) supplies viscous soil A introduced from the outside of the device to a supply conveyor C1 in a fixed amount, and is opened up and down and is viscous soil from above. A container 2 into which A is inserted, a pressing plate 3 that forms a part of the inner wall of the container 2 and rotates around the lower end side to press the viscous soil A in the container 2, and with rotation And a rotor 4 for cutting off the bottom of the viscous soil A in the container 2 onto the supply conveyor C1.

  The container 2 is held by a frame 5 and has a rectangular tube-shaped main body 2a, an introduction portion 2b that is continuous with the upper portion of the main body 2a and is inclined outward, and a main body. A continuous rotor housing 2c is provided at the bottom of 2a.

  Two pressing plates 3 are used in this embodiment. Each pressing plate 3 is disposed inside the two inclined surfaces of the introduction portion 2 b to form a part of the inner wall of the container 2, and the lower end portion of the pressure plate 3 is rotated to the container 2 via the hinge 6. It is connected freely. In addition, each pressing plate 3 is connected to the back surface of each hydraulic cylinder 7 attached on the frame 5, and is rotated toward the center of the container 2 by driving the hydraulic cylinder 7 to extend, By returning the hydraulic cylinder 7 to contraction, it returns to its original position.

  Although not shown, an opening is formed in the introduction portion 2b of the container 2, and each pressing plate 3 and the hydraulic cylinder 7 are connected through the opening and the rotation of the pressing plate 3 is performed. Sometimes the upper part of the hydraulic cylinder 7 enters inward from the opening.

  Two sets of rotors 4 are used in this embodiment. As shown in FIG. 1 (c), each rotor 4 is arranged at a predetermined interval on the axis of the substantially horizontal rotation shaft 8 and rotates together with the rotation shaft 8. A plurality of rod-like cutters 10 arranged at predetermined intervals in the rotation direction and installed between the supports 9 are provided. The support 9 includes three leg pieces at intervals of 120 degrees, and supports the rod-like cutter 10 at the tip of each leg piece. The rod-shaped cutter 10 has a cutting edge on at least one side, and preferably has a flat cross-sectional shape. In this embodiment, three support bodies 9 are arranged at equal intervals on the axis of the rotary shaft 8, and three rod-shaped cutters 10 are arranged at equal intervals in the rotation direction of each support body 9.

  The two sets of rotors 4 are arranged so as to cross the inside of the container 2 so that the rotation shafts 8 thereof are parallel to each other in the same horizontal plane, and a motor provided outside the container 2 In this case, the rod-shaped cutter 10 is driven to rotate in the opposite directions so that the rod-like cutter 10 moves downward on the center side of the container 2, and the viscous soil A is alternately cut off. The phases of the rod-shaped cutters 10 are set.

  The supply conveyor C <b> 1 is a belt conveyor and is installed almost horizontally inside the frame 5, and conveys the viscous soil A cut off by the rotor 4 to the next process. In addition, the viscous soil A is a mud soil with a water content ratio of about 50 to 200%, for example.

  As shown in FIG. 2, the viscous soil supply apparatus 1 </ b> A having the above-described configuration is configured such that the viscous soil A is introduced into the container 2 using, for example, a power shovel P. The viscous soil A put into the container 2 is gradually lowered by its own weight, but when the rotor 4 is stopped, the rotor 4 suppresses the descent. Then, the viscous soil supply device 1A rotates the two sets of rotors 4 to sequentially cut off the bottom of the viscous soil A by the rod-shaped cutter 10, and simultaneously drives the supply conveyor C1 for the next process. The viscous soil A is continuously supplied in a fixed amount.

  At this time, in the viscous earth supply device 1A, since the rotor 4 is composed of a plurality of support bodies 9 and a plurality of bar-shaped cutters 10, the bar-shaped cutter 10 has a simple structure and is used when cutting the clay A. Therefore, the viscous soil A can be easily and reliably cut, and there is no concern that the rotor 4 prevents the viscous soil A from dropping.

  Moreover, when the above-described cutting of the viscous soil A proceeds and the viscous soil A in the container 2 is gradually lowered, as shown in FIG. A phenomenon may occur in which the upper part remains arched. On the other hand, in the viscous soil supply device 1A, as shown in FIG. 2B, the two pressure plates 3 are rotated by the hydraulic cylinders 7 toward the center of the container to press the viscous soil A. By dropping the arch-shaped portion and lowering the clay soil A, the fixed amount of cutting off by the rotor 4 can be continued stably.

  In addition, generation | occurrence | production of the cavity H in the viscous soil A can be indirectly detected, for example by observing the displacement of the upper surface of the viscous soil A, and when the generation of the cavity H is detected, the pressing plate 3 is moved. Although it is possible to operate, it is of course possible to periodically operate the pressing plate 3 regardless of whether or not the cavity H is generated when the constant supply is continued. Further, after the pressing of the viscous soil A by the pressing plate 3 is finished, the pressing plate 3 is returned to the original position as shown in FIG. .

  In addition, the viscous soil supply apparatus according to the present invention can use the rotor 4 having a disk-like support 49 as shown in FIG. A plurality of cutter attachment portions may be provided in the portion, and these cutter attachment portions may be selectively used so that the number of the rod-like cutters 10 can be arbitrarily changed.

  FIG. 3 is a diagram for explaining another embodiment of the viscous earth supply device according to the present invention. In addition, about the same component as the previous Example, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The viscous soil supply device 1B shown in the drawing forms a container 52 that opens up and down and into which the clay soil A is introduced from above, and forms a part of the inner wall of the container 52 and rotates around the lower end side to accommodate the container 52. A pressing plate 53 that presses the viscous soil A in the body 52 and a rotor 4 that cuts off the bottom of the viscous soil A in the container 52 on a supply conveyor (not shown) (see FIG. 1) with rotation.

  The container 52 of this embodiment has a main body part 52a in which two opposite sides are inclined outward, a rectangular tube-shaped introduction part 52b continuous to the upper part of the main body part 52a, and a lower part of the main body part 52a. A rotor storage portion 52c is provided. Further, on both sides of the main body portion 52a, fixing members 55 for forming a plurality of scissor slits are provided in comb-like shapes on the inclined inner walls, and a pressing plate 53 is rotatably provided in each slit. Yes. That is, in this embodiment, a large number of pressing plates 53 corresponding to the number of slits are provided.

  Each pressing plate 53 is adjacent to the fixing member 55 via a very small gap that allows rotation, and to the rotation shaft 56 that continuously penetrates the lower end portion of each fixing member 55. Each lower end portion is connected. These pressing plates 53 form part of the inner wall of the container 52 at the end surface on the inner side of the container, and are connected to each other by upper and lower connecting members 57 and 58 joined to the end surface on the outer side of the container. The hydraulic cylinders (see FIG. 1) that do not rotate rotate all at once, and project and retract with respect to the inside of the container 52 along with the reciprocal rotation.

  At this time, the rotation range of each pressing plate 53 is within the range obtained by adding the width W2 of the fixing member 55 to the width W1 of the pressing plate 53 in the rotation direction, and at least the upper end portion is separated from the fixing member 55. The positional relationship is not set.

  The rotor 4 of this embodiment is provided with a disk-like support 49 and three rod-like cutters 10 arranged at intervals of 120 degrees in the circumferential direction, as shown in FIG. 1 (d). And two sets are accommodated in the rotor accommodating part 52c, and as shown by the arrow in a figure, it is rotationally driven in the mutually opposite direction, and the clay soil A is cut off.

  As in the previous embodiment, the viscous soil supply device 1B having the above configuration temporarily stores the viscous soil A introduced from the upper side in the container 52 and rotates the two rotors 4 so that the rod-shaped cutter 10 By cutting off the bottom of the clay soil A sequentially and simultaneously driving a supply conveyor (not shown), the clay soil A is continuously supplied quantitatively to the next process.

  At this time, in the clay soil supply device 1B, each pressing plate 53 is reciprocally rotated to project each pressing plate 53 as shown in FIGS. 3 (a) and 3 (b), FIGS. 3 (c) and 3 (d). As shown in FIGS. 3 (e) and 3 (f), the pressing plates 53 and the fixing member 55 are connected in the same plane. By pressing each of the pressing plates 53 into the body 52 and pressing the clay soil A, it is possible to prevent the cavity H from being generated inside the clay soil A. Can be resolved.

  Further, when the viscous soil supply device 1B causes each pressing plate 53 to project and retract, the viscous soil A adheres mainly to the end surface of each pressing plate 53 in the projecting state, and mainly the fixing members 55 in the immersed state. In any state, the adhesion area of the viscous soil A to the container 52 is reduced. Thereby, the adhesive force of the viscous soil A with respect to the inner surface of the container 52 is reduced, and the lowering of the viscous soil A due to its own weight can be promoted.

  In this way, the above-mentioned viscous soil supply device 1B not only prevents the generation of the cavity H, but also can smoothly supply the viscous soil A introduced into the container 52 to the rotor 4 side, and can supply a fixed amount. Further high precision can be realized. Moreover, since the said viscous earth supply apparatus 1B set the rotation range of the press plate 53 based on the width W1, W2 of the press plate 53 and the fixing member 55, the protrusion limit shown in FIG. The pressing plate 53 that has reached the immersion limit shown in 3 (c) is not separated from the fixing member 55, and there is an advantage that the situation where the viscous soil A leaks to the outside of the container 52 can be prevented.

  Next, FIG. 4 is a diagram for explaining an embodiment of the clay soil reforming apparatus using the clay soil supply apparatus 1A (or 1B).

  The illustrated viscous soil reforming apparatus includes the viscous soil supply apparatus 1A (or 1B), and is an apparatus for reforming the viscous soil A that is quantitatively supplied from the viscous soil supply apparatus 1A (or 1B), and is supplied in a fixed quantity. A modifier supply device 21 for supplying a modifier B such as cement or lime to the clay soil A, a mixer 22 for mixing the clay A and the modifier B introduced from the supply conveyor C1, and a mixer 22 is provided with a carry-out conveyor C2 that receives the clay A that has fallen from 22 and conveys it to the outside of the apparatus, and the modifier supply apparatus 21 conveys the modifier B that is quantitatively supplied from the supply source 23. C3 is provided.

  Here, the supply conveyor C1, the carry-out conveyor C2, and the addition conveyor C3 are all belt conveyors, and are arranged so as to partially overlap each other with their drive shafts parallel to each other. Further, the supply conveyor C1 is located on the side opposite to the conveyance direction (left side in FIG. 4) of the mixing device 22 with reference to the conveyance direction of the carry-out conveyor C2 which is the right direction in FIG. C3 is located on the upper side of the mixing device 22 and the side in the transport direction (right side in FIG. 4).

  The supply conveyor C1 includes a driving wheel 24A at one end and a driven wheel 24B at the other end, and a second driven wheel 24C at the lower side, and an inclined portion Cs is formed between the driven wheels 24B and 24C. The inclined portion Cs which is a part of the supply conveyor C1 faces one side of the mixing device 22. Further, the addition conveyor C3 has a substantially T shape by providing a drive wheel 25A at one end and a driven wheel 25B at the other end, as well as a lower driven wheel 25C and a pair of holding wheels 25D and 25E. In addition, one side of the horizontal portion Ch of the addition conveyor C3 faces the upper side of the mixing device 22, and the vertical portion Cv faces the other side of the mixing device 22.

  The carry-out conveyor C2 is located below the supply conveyor C1, the addition conveyor C3, and the mixing device 22, and the carry-out side extends to the outside of the device. On the other hand, the clay soil A adhering during mixing by the mixing device 22 is scraped onto the unloading conveyor C2 at the lower portion of the supply conveyor C1 and the lower portion of the anti-mixing device side in the horizontal portion Ch of the adding conveyor C3. Scrapers 26 and 27 to be dropped are provided. As shown in the figure, when another conveyor C4 is arranged on the carry-out side of the carry-out conveyor C2, a scraper 28 can be provided also below the carry-out conveyor C2.

  As described above, the reforming material supply device 21 includes an addition conveyor C3 that conveys the reforming material B that is quantitatively supplied from the supply source 23, and a reforming material that is added from the addition conveyor C3 to the viscous soil A on the supply conveyor C1. A supply means 29 for supplying B is provided, and an end portion on the carry-out side of the addition conveyor C3 extends to the upper side of the supply conveyor C1.

  Further, as shown in FIG. 5, the supply means 29 covers the end portion on the carry-out side of the addition conveyor C <b> 3 and serves as a drop guide for the reforming material B, and the inside of the reforming material B falls. A cylindrical portion 31 serving as a passage and a pointed head 32 extending from the lower end portion of the cylindrical portion 31 in the counter-conveying direction of the supply conveyor C1 are provided.

  The cylindrical portion 31 is continuous with the lower end portion of the housing 30 and hangs down toward the supply conveyor C1 to form an appropriate gap with the upper surface of the conveyor C1. Further, a notch 33 for allowing the dropped reforming material B to pass is formed on the lower end portion of the cylindrical portion 31 on the side opposite to the conveying conveyor C1.

  In this embodiment, the pointed head 32 has a triangular pyramid shape and forms an appropriate gap with the upper surface of the supply conveyor C1, and at least the upper layer portion of the clay soil A being conveyed is divided into right and left. Then, it passes through both sides of the cylindrical portion 31. In addition, since the clay A has a high water content ratio, it does not maintain the state cut by the pointed head 32 and falls down inside after passing through the cylindrical portion 31.

  As shown in FIG. 6, the mixing device 22 is arranged at a plurality of locations along a substantially horizontal rotating shaft 35 rotatably held with respect to the frame 34, and a circumferential direction and an axial direction of the rotating shaft 35. A plurality of stirring members 36 that rotate together with the rotating shaft 35 are provided. The stirring member 36 is a member that can be deformed in the rotational direction, and an example thereof is a chain. In this embodiment, the stirring shaft 36 is arranged at eight positions at equal intervals in the circumferential direction of the rotational shaft 35. It is provided at six locations at equal intervals in the direction, for a total of 48. As described above, the agitating member 36 uses a member that can be deformed in the rotation direction, so that the cohesive soil A and the modifier B can be hit like a whip, and the mixing performance of both can be further improved. If a chain is used as described above, there is an advantage that a configuration that realizes sufficient mixing performance can be obtained at a relatively low cost.

  A motor 37 is provided on the upper portion of the frame 34, and a transmission belt 38 is wound between the motor 37 and the rotation shaft 35. The motor 36 rotates the rotation shaft 35 and each stirring member 36. To drive.

  As shown in FIG. 5, the mixing device 22 of this embodiment includes two sets of configurations including a rotation shaft 35 and a stirring member 36, and the axis of each rotation shaft 35 is parallel to the drive shaft of each conveyor C <b> 1 to C <b> 3. Are arranged in parallel with each other, and are driven to rotate in the opposite directions so that the clay soil A moves downward in the middle. Therefore, the inclined portion Cs of the supply conveyor C1 and the horizontal portion Ch and the vertical portion Cv of the addition conveyor C3 described above are arranged to face the rotating circumferential surface of the mixing device 22.

  In addition, the clay soil reforming apparatus is provided with outer walls 39 partially shown in FIG. 4 on both sides of the conveyors C1 to C3 and the mixing apparatus 22, and the mixing apparatus 22 is surrounded by the conveyors C1 to C3 and the outer wall 39. It is located in a substantially closed space. In addition to the above configuration, the viscous soil reformer is not shown in the figure, but is a control device that controls each of the conveyors C1 to C3, the viscous soil supply device 1A (or 1B), the reformer supply device 21, and the mixing device 22. The operation and speed of the drive unit can be arbitrarily set as necessary.

  The viscous soil reforming apparatus having the above-described configuration continuously supplies a quantitative amount of the viscous soil A from the viscous soil supply device 1A (or 1B) and reforms the viscous soil A being conveyed by the supply conveyor C1. The reforming material B is continuously and quantitatively supplied from the material supply device 21. At this time, the reformer supply device 21 cuts at least the upper layer portion of the viscous soil A being transported to the left and right by the pointed head 32 of the supply means 29, and passes through the tubular portion 31 between the cut pieces of the viscous soil A. A fixed amount of the reforming material B is supplied. In addition, the viscous soil A that has passed through both sides of the cylindrical portion 31 falls to the inside so that the modifier B is confined. As a result, it is possible to reliably supply a certain amount of the viscous soil A and a certain amount of the modifier B to the mixing device 22 while preventing the modifier B from being scattered.

  Next, in the mixing device 22, the rotating shaft 35 is rotated at, for example, 500 to 1000 rpm, and the viscous soil A and the modifier B that have dropped from the supply conveyor C <b> 1 are collided with the stirring member 36 that rotates at high speed. Soil A and modifier B are finely dispersed and both are mixed thoroughly.

  Here, the rotational speed of the rotary shaft 35 is not particularly limited. However, if the rotational speed is lowered to, for example, about 300 rpm, the effect of dispersing the viscous soil A is reduced, and the modifying material is placed outside the massive viscous soil A. It becomes a low quality thing to which B adhered. Further, at the low rotation, the viscous soil A easily adheres to the stirring member 36, and the amount of adhesion increases while the viscous soil A is solidified, so that the load on each component of the mixing device 22 increases.

  Therefore, in the viscous soil reforming apparatus, the rotational speed of the rotary shaft 35 is set to about 500 to 1000 rpm so that the viscous soil A is sufficiently dispersed to improve the quality after reforming, and the stirring member 36 is viscous. The overloading of the mixing device 22 is prevented by making the soil A difficult to adhere. The higher the rotational speed of the rotating shaft 35, the better the effect of preventing the adhesion of the viscous soil A to the stirring member 36. However, even if the rotational speed is increased unnecessarily, it is only necessary to increase the size of the motor or strengthen structural parts. Since there is no great difference in mixing performance, the upper limit is preferably about 1000 rpm.

  Moreover, in the mixing apparatus 22 as described above, naturally, the viscous soil A including the modifier B is unavoidably scattered during the mixing and adheres to the periphery thereof. At this time, if the mixing device 22 is simply covered with housings, the viscous soil A adhering to the inner wall of the housing increases while solidifying, so that the loss of the viscous soil A in the device occurs and the solidified viscous soil A is solidified. May interfere with the rotating stirring member 36.

  On the other hand, in the viscous soil reforming apparatus, the supply conveyor C1 and the addition conveyor C3 are disposed so as to surround the rotating circumferential surface of the mixing apparatus 22, and scrapers 26 and 27 are provided on both conveyors C1 and C3. Therefore, the viscous soil A scattered in the mixing device 22 adheres to the supply conveyor C1 and the addition conveyor C3, and the clay A is scraped off onto the unloading conveyor C2 by the scrapers 26 and 27 and conveyed to the outside of the apparatus. be able to.

  Therefore, the conveyor surface from which the clay soil A has been removed by the scrapers 26 and 27 is sequentially sent to and opposed to the mixing device 22, and the clay soil adhered to the supply conveyor C1 and the addition conveyor C3. A situation in which A and the stirring member 36 interfere with each other can be prevented, and the loss of the viscous soil A in the apparatus can be extremely reduced.

  As described above, the viscous soil reforming apparatus using the viscous soil supply apparatus 1A (or 1B) of the above embodiment sufficiently mixes a certain amount of the viscous soil A and a certain amount of the modifying material B so that the viscous soil A is mixed. The uniform reforming can be realized, and a series of steps from the recovery of the viscous soil A to the unloading of the modified viscous soil A can be continuously performed by one apparatus.

  It should be noted that the viscous soil supply device and the viscous soil reforming device using the same according to the present invention are not limited to the above-described embodiments in detail, and the specific configuration is within the scope of the present invention. Can be changed as appropriate.

  In the cohesive soil reforming apparatus, as a configuration surrounding the mixing apparatus, the supply conveyor is substantially T-shaped like the addition conveyor shown in FIG. 4, or the addition conveyor is inclined as in the supply conveyor shown in FIG. Furthermore, the stirring member of the mixing device is more preferably a member that can be deformed in the rotational direction. It is possible to use a single member having flexibility, etc. In addition, the number (number of sets) and the shape of each component are natural in both the clay soil supply device and the clay soil reforming device. It can be changed.

It is sectional drawing (a), a perspective view (b), a perspective view (c) of a rotor, and a perspective view (d) showing other examples of a rotor for explaining one example of a viscous earth supply device concerning the present invention. . In the viscous soil supply device shown in FIG. 1, a sectional view (a) showing a state where a cavity is formed in the viscous soil, a sectional view (b) showing a state where the pressing plate is rotated, and a state where the pressing plate is returned. It is sectional drawing (c). BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining one Example of the viscous soil supply apparatus concerning this invention, Comprising: Sectional drawing (a) which shows the protrusion state of a press plate, perspective view (b) of the principal part, cross section which shows the immersion state of a press plate It is sectional drawing (e) and the perspective view (f) of a principal part which show the state which a figure (c), the perspective view (d) of a principal part, and a press plate and a fixing member continue in the same plane. It is a side view explaining one Example of the viscous soil reforming apparatus using the viscous soil supply apparatus shown in FIG. It is sectional drawing (a) which shows the supply part and its circumference | surroundings of a modifier, the perspective view (b) explaining a supply means, and the side view (c) explaining a supply means. It is sectional drawing (a) and side view (b) of the axial direction of the rotating shaft explaining a mixing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS A Cohesive soil B Reformer C1 Supply conveyor C2 Unloading conveyor C3 Addition conveyor 1A Cohesive soil supply device 1B Cohesive soil supply device 2 Container 3 Pressing plate 4 Rotor 8 Rotating shaft (Rotating shaft of rotor)
DESCRIPTION OF SYMBOLS 9 Support body 10 Rod cutter 21 Reformer supply apparatus 22 Mixer 23 Reformer supply source 26 Scraper 27 Scraper 29 Supply means 31 Cylindrical part 32 Pointed head 35 Rotating shaft (Rotating shaft of mixing apparatus)
36 stirring member 49 support body 52 container 53 pressing plate 55 fixing member

Claims (9)

  An apparatus for supplying a fixed amount of viscous soil charged from outside the apparatus onto a supply conveyor, comprising a container that opens up and down and into which viscous soil is charged from above, and forms a part of the inner wall of the container; Viscous soil comprising a pressing plate that rotates about the lower end side to press the viscous soil in the container, and a rotor that cuts the bottom of the viscous soil in the container on the supply conveyor as it rotates. Feeding device. The container is provided with a fixing member that forms a number of scissors slits on the inner wall thereof, and a pressing plate is rotatably provided in each slit, and each pressing plate is placed inside the container with reciprocal rotation. The viscous soil supply device according to claim 1, wherein the device performs a projecting and retracting operation. The viscous earth supply device according to claim 2, wherein the rotation range of the pressing plate is within a range in which the width of the pressing plate is added to the width of the pressing plate in the rotation direction.   A rotor is arranged at predetermined intervals on the axis of the substantially horizontal rotating shaft and rotates together with the rotating shaft, and is arranged between the supporting members at predetermined intervals in the rotation direction of the respective supporting members. The viscous soil supply apparatus according to any one of claims 1 to 3, further comprising a plurality of rod-shaped cutters.   An apparatus for reforming viscous soil that is quantitatively supplied from the viscous soil supply apparatus, comprising the viscous soil supply apparatus according to claim 1, wherein the modifier is supplied to the viscous soil that has been quantitatively supplied. A modifying material supply device, a mixing device for mixing the viscous soil and the modifying material charged from the supply conveyor, and a carry-out conveyor for receiving the viscous soil dropped from the mixing device and conveying it to the outside of the device. Characteristic clay soil reformer.   A reformer supply device includes an addition conveyor for transporting a fixed amount of the reformed material supplied from the reformer supply source, and a supply means for supplying the reformer from the addition conveyor to the viscous soil on the supply conveyor. A cylindrical portion having a reforming material drop passage inside, and at least an upper layer portion of the viscous soil being conveyed extending from the lower end portion of the cylindrical portion in the opposite conveyance direction of the supply conveyor The cohesive soil reforming apparatus according to claim 5, further comprising a pointed head that allows the water to pass through both sides of the cylindrical portion.   6. The mixing apparatus includes a substantially horizontal rotating shaft and a plurality of stirring members disposed at a plurality of locations along a circumferential direction and an axial direction of the rotating shaft and rotating together with the rotating shaft. Or the cohesive soil reformer according to 6.   The viscous soil reforming apparatus according to claim 7, wherein the stirring member is a member that is deformable in a rotation direction.   The supply conveyor, the addition conveyor, and the carry-out conveyor are arranged in a state where the respective drive shafts are parallel to each other and overlap each other in the vertical direction. A part of the supply conveyor faces one side, and a part of the addition conveyor faces the other side and the upper side, and adheres to the supply conveyor and the addition conveyor during mixing by the mixing device. A clay soil reformer according to any one of claims 5 to 8, further comprising a scraper that scrapes off the clay soil that has been discharged onto a carry-out conveyor.

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