JP2009148733A - Improved conveyance machine of sludge soil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance efficiency of carry-in and carry-out conveyance by integrating agitation treatment for soil improvement and conveyance of sludge soil to the latter part into one unit apparatus. <P>SOLUTION: A rotary shaft 20 subjected to motor drive via a chain belt 22 is arranged inside a cover case 11 including an introduction opening 14 of the sludge soil on one end part and a discharge opening 17 of improved soil on the other end part, and also an agitation projection cluster 27 arranging a spiral blade plate 24 and a plurality of non-spiral projections V are mutually disposed on this rotary shaft. The sludge soil is transferred to the latter stage by the spiral blade plate 24 and agitated by the agitation projection cluster 27 of the next stage. Apparatuses necessary to be sufficiently agitated during transfer and for soil improvement are integrated into one. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for improving sludge soil containing a large amount of water into a soil that is easy to carry.

  In the construction of rivers, dams, lakes, beaches, etc., it is necessary to treat sludge soil containing a large amount of water. The contents of the processing at this time are roughly divided into two. One is a technology for purifying the moisture of sludge soil and returning it to rivers, etc., and the other is to improve the soil quality of sludge using treatment materials.

  The present invention relates to an apparatus for improving the soil quality of sludge using a treatment material. Conventionally, chemicals such as water-absorbing polymers have been known as treatment materials for improving sludge soil. Recently, however, it has been improved by using soil improvement materials that do not use chemical substances, such as natural ore-based treatment materials. Attempts have been made, for example, to disperse the applied soil over a field. The improved soil using natural ore-based treatment materials (such as lime) does not have an adverse effect on the fields and neighboring soils. Rather, the high organic components contained in the sludge are considered to have a favorable effect on the growth of crops.

  Such a natural ore-based soil conditioner absorbs moisture contained in sludge soil and expands. Therefore, if this is mixed with the sludge soil, the sludge soil that has been muddled by a large amount of water changes to a soil quality that is easy to handle, and transport processing and the like become easy.

  FIG. 4 illustrates a configuration of a conventional soil improvement apparatus using such a natural ore-based treatment material. 1 is a hopper for introducing sludge soil, 2 is a transport device (for example, a belt conveyor) for transferring the sludge soil to the subsequent stage, and 3 is a natural ore-based treatment material (powder-like) for the sludge soil flowing through the transport device 2. (4) is a stirrer that stirs sludge soil mixed with natural ore-based processing material, and 5 is the improved soil discharged from the lower opening of the stirrer 4 to the subsequent stage. It is a transfer device (for example, a belt conveyor) for transferring.

The improved soil transported by the transport device 5 at the final stage is mounted on, for example, the truck 6 and transported to an appropriate place. The improved soil loaded in the truck 6 has been modified to a soil quality that is easy to handle with less apparent moisture as a result of mixing the treatment materials. In addition, there exists the following patent document 1 as a technique using a natural ore type processing material.
JP 2006-187695 A

  The problem is the number of devices that are brought into the work site and installed for the treatment of sludge soil. If the number of devices is large, the burden of transportation by truck will increase, and not only will the time required for installation work increase, but also normal removal after the completion of work and evacuation and removal work in an emergency such as a flood will be complicated This is because it causes trouble.

  Therefore, an object of the present invention is to improve the work efficiency of loading and unloading by realizing stirring processing for soil improvement and transport of sludge soil to the subsequent stage with a single unit device.

  In order to achieve the above-mentioned object and to solve the problem, the improved sludge soil transporter according to the present invention is provided with a sludge soil inlet opening at one end and an improved soil discharge opening at the other end. A rotation shaft driven by a motor via a chain belt is arranged inside the cover case, and a spiral blade and a group of stirring projections each having a plurality of non-spiral projections are alternately arranged on the rotation shaft. (Claim 1). In some cases, a spiral blade is provided at each of the start point of the rotary shaft that is the most upstream and the end point of the rotary shaft that is the most downstream (claim 2).

  According to such a configuration, since the rotation shaft in which the spiral blades and the non-spiral stirring protrusions are alternately arranged is provided in the internal space covered by the cover case, the rotation shaft is connected via the chain belt. When the motor is driven to rotate, the sludge soil that has entered the interior space through the sludge soil input opening is transferred to the subsequent stage by the spiral blade and is stirred by the next-stage stirring projection group.

  Since the rotating blades are alternately arranged with spiral blades and stirring protrusions, the sludge soil stirred by the stirring protrusions is transferred to the subsequent stage by the next-stage spiral blades, and this is repeatedly covered. Improved soil is discharged to the outside through the discharge opening of the case.

  The protrusions constituting the non-spiral stirring protrusion group may use a V-shaped channel material (claim 3). By arranging multiple pyramid surfaces of the channel material in the direction of rotation of the rotation axis, it is easy to propel regardless of the viscosity of the soil, and the resistance during stirring can be reduced, just like the tip of a boat. It is.

  According to the improved sludge soil transporter according to the present invention, the agitation for soil improvement and the transfer of the sludge soil to the subsequent stage can be realized by one unit device, so the number of necessary devices can be reduced. , Transportation efficiency will be improved. Moreover, since assembly and disassembly become easy, work efficiency at the time of carrying in / out is also improved.

  FIG. 1 shows an embodiment of the entire processing apparatus including an improved conveyor 10 for sludge soil according to the present invention.

  This processing apparatus is similar to the conventional apparatus in that a hopper 1 for feeding sludge soil, a conveyor device 2 such as a belt conveyor for transferring the sludge soil to the subsequent stage, and a natural ore system treatment for sludge soil flowing through the conveyor apparatus 2 are used. A processing material feeder 3 for dropping a material (powder or granular) is provided. And the one end part (sludge soil input opening part) of the improved conveyance machine 10 of the sludge soil which concerns on this invention which improves and transfers the transferred sludge soil is arrange | positioned at the terminal part of the conveying apparatus 2. FIG.

  The improved sludge soil transporting machine 10 includes a single rotating shaft 20 inside a cover case 11 having a substantially cylindrical shape. The rotating shaft 20 is arranged along the longitudinal direction inside the cover case 11 and supports both ends on the upstream side and the downstream side by bearing materials (not shown). For example, the rotary shaft 20 and the chain belt 22 are engaged with each other so that the downstream end can be rotationally driven via the motor 21 and the chain belt 22. Of course, the motor 21 and the chain belt 22 may be arranged on the upstream side of the rotary shaft 20. Reference numeral 23 denotes a rotating shaft of the motor 21, and 28 denotes a rotating wheel on which the chain belt 22 is hung.

  At one end (uppermost stream side) of the cover case 11, a sludge soil charging opening 14 is provided, and at the other end (most downstream side) of the cover case 11, an improved soil discharge opening 17 is provided. is there.

  The input opening 14 is disposed so as to be positioned below the terminal of the transport device 2 so that the sludge soil flowing through the transport device 2 sequentially flows into the improved transport machine 10. It is desirable to provide a hood cover 15 having an appropriate shape above the input opening 14 so that the sludge soil does not diffuse. The discharge opening 17 is provided with a discharge guide slope 18 inclined downward as required. This is because the improved soil is guided when the improved soil is loaded onto the truck 6.

  On the rotating shaft 20, spiral blades 24 and agitation protrusion groups 27 provided with a plurality of non-spiral protrusions V are alternately arranged. The spiral blade 24 is a means for forcibly transferring the sludge soil to the subsequent stage, and the non-spiral stirring projection group 27 is a means for forcibly mixing the sludge soil and the treatment material. The outer diameter of the spiral blade 24 and the height of the protrusions constituting the stirring protrusion group 27 are both slightly smaller than the inner diameter of the cover case 11, and do not contact the inner surface of the cover case 11, but there is an excess gap. It is desirable not to occur.

  It is desirable that the mixing treatment of the sludge soil and the treatment material is performed a plurality of times while being transferred. For this reason, in this embodiment, the stirring protrusion group 27 is provided in three places of the rotating shaft 20 so that mixing can be performed three times during the transfer.

  In addition, in order to quickly transfer the sludge soil that has entered from the input opening 14 to the subsequent stage and to quickly discharge the improved soil from the discharge opening 17, spiral blades 24 are provided on the uppermost stream and the most downstream side of the rotary shaft 20. When the stirring protrusion group 27 is provided at three places as in the present embodiment, the number of the spiral blade plates 24 provided alternately is four.

  The spiral blade 24 and the stirring projection group 27 can be provided so as to divide the longitudinal dimension of the rotary shaft 20 substantially evenly, but at the start point (near the opening 14) and the end point (near the outlet 17), the soil Have different viscosities. For this reason, in order to make the soil transfer speed substantially uniform as a whole, it is desirable to increase the number of turns of the spiral blade plate 24 as the viscosity is closer to the starting point (near the charging opening 14). In addition, it is desirable to rapidly mix with the processing material at the uppermost stream near the starting point (near the charging opening 14). For this reason, it is preferable to increase the size of the protrusions 27 on the upstream side, particularly in the uppermost stream, so that the number of protrusions V is increased from the downstream side.

  Specifically, for example, it is as follows. As in this embodiment, when there are four spiral blades 24 and three stirring protrusions 27, if the longitudinal dimension of the rotary shaft 20 is W, the average value of the longitudinal dimension occupied by each one is 1 / 7W. When the length of the rotating shaft 20 is 5.6 m, for example, this is a value at which one location is about 80 cm. However, when the longitudinal dimension of the upstream spiral blade 24 and the stirring projection group 27 is large, the rotational speed of the upstream spiral blade 24 is 6 and the longitudinal dimension to be used is 1 m. While the longitudinal dimension of the stirring projection group 27 is 1.2 m, the longitudinal dimension used by the most downstream spiral blade 24 and the stirring projection group 27 is 50 cm, for example, the longitudinal dimension (use By changing the length of the area, it becomes possible to improve the soil efficiently.

  In the case where the pitch of the spiral blades 24 (blade plate separation dimension) is the same, the number of turns decreases as the longitudinal dimension used decreases. It is desirable to design by selecting whether to prioritize the pitch or the number of turns according to the nature of the soil. When giving priority to the number of turns, a configuration may be adopted in which the same number of turns is used for a large longitudinal dimension and a small longitudinal dimension.

  The same applies to the stirring protrusion group 27. The larger the longitudinal dimension, the larger the number of protrusions V can be installed. However, the number of protrusions per longitudinal dimension may be changed between the upstream side and the downstream side according to the soil quality.

  The stirring protrusion group 27 is constituted by a plurality of protrusions V (non-spiral ones). As shown in FIG. 2, each protrusion V uses, for example, a V-shaped channel material. If the pyramid surface of the channel material is arranged in the direction of rotation of the rotary shaft 20 (arrow X), the ridge line P of the channel material moves forward through the soil, and the sludge soil and the treatment material are mixed with little resistance. As shown in FIG. 3, the protrusions V are erected with the base ends thereof being fixed evenly and evenly on the outer periphery of the rotating shaft 20 to form a stirring protrusion group 27. FIG. 3 shows an example of the arrangement of the protrusions V arranged around the rotation axis 20. In order to show the direction of the ridge line P of the protrusion V when the channel material is used, the rotation axis 20 shown in cross section is shown. The projection V displayed in a perspective view is shown. In FIG. 3, the protrusions V are indicated by using thick lines and thin lines. However, the protrusions V indicated by the thick lines and the protrusions V indicated by the thin lines have different arrangement positions (of the rotating shaft 20). This means that the position in the longitudinal direction moves back and forth.

  Therefore, according to such a configuration, the sludge soil that has entered through the charging opening 14 is sequentially transferred to the subsequent stage by the uppermost spiral blade plate 24 immediately below, and is transferred to the uppermost stirring protrusion group 27, where it is stirred. Is done. The soil stirred by the most upstream stirring projection group 27 is transferred to the subsequent stage by the subsequent spiral blade 24 while being pressed in the subsequent direction by the soil fed from the uppermost spiral blade 24. It moves to the stirring protrusion group 27 and is stirred there. This continues, and finally, it is transported by the most downstream spiral blade 24 and becomes good improved soil sufficiently mixed with the treatment material, and is discharged to the outside through the discharge opening 17.

  Since this apparatus simultaneously transfers and agitates sludge soil, the apparatus configuration can be integrated as a single unit apparatus. For this reason, the work efficiency in each stage of conveyance, carrying in, installation, and removal of the apparatus is reliably increased. Moreover, since the spiral blades 24 dispersed in a plurality function as a screw conveyor, even if tilted upward, the sludge soil can be transferred to the subsequent stage.

  The apparatus according to the present invention is not limited to the one in this embodiment. For example, in the above-described embodiment, the protrusion V constituting the stirring protrusion group 27 has been described as a V-shaped channel material, but the protrusion forming the stirring protrusion group 27 is accompanied by the rotation of the rotation shaft. It is sufficient if the sludge and the treatment material can be stirred. Accordingly, a simple protrusion such as a flat plate, a round tube or a square tube may be used. The rod may be provided with protrusions on the outer surface, or may have a mesh shape. The protrusions constituting the stirring protrusion group need not all have the same shape.

  It is desirable that the outer diameter of the spiral blade 24 be substantially uniform. In addition, it is desirable that the length (height) of the protrusions constituting each stirring protrusion group is substantially uniform. In order to maintain strength, it is desirable to use a metal such as iron for the spiral blade 24 and each protrusion.

  The outer shape of the cover case 11 is not limited to a substantially cylindrical shape. As long as the sludge soil moving inside does not leak to the outside, it may be a cylindrical body having a polygonal cross section such as a hexagon. The inner diameter of the cover case 11 is desirably substantially uniform. The cover case 11 is preferably formed of metal.

It is a figure which illustrates the improved conveyance machine of sludge soil concerning an embodiment. It is a figure which illustrates the projection concerning an embodiment. It is a figure which shows the example of arrangement | positioning the protrusion which concerns on embodiment. It is a figure which shows the conventional apparatuses which improve sludge soil.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hopper 2 Conveying device 3 Processing material supply machine 10 Sludge soil improvement conveyance machine 11 Cover case 14 Sludge soil input opening 17 Improved soil discharge opening 15 Hood cover 18 Guide slope 20 Rotating shaft 21 Motor 22 Chain belt 23 (Motor 21 ) Rotating shaft 24 Spiral blade 27 Stirring projection group 28 Rotating wheel V

Claims (3)

While arranging a rotating shaft driven by a motor via a chain belt inside a cover case having a sludge soil charging opening at one end and a drain opening for improving soil at the other end,
An improved conveying machine for sludge soil, characterized in that a spiral blade and a group of stirring protrusions provided with a plurality of non-spiral protrusions are alternately disposed on the rotating shaft.   2. The improved sludge soil conveying machine according to claim 1, wherein a spiral blade is provided at each of a starting point of a rotating shaft that is the most upstream and an ending point of the rotating shaft that is the most downstream.   The improved conveying machine for sludge soil according to claim 1 or 2, wherein the protrusions constituting the non-spiral stirring protrusion group are configured using a V-shaped channel material.

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