JP4858960B2 - Insolubilizer - Google Patents

Description

  The present invention relates to an insolubilization treatment apparatus, and more particularly, to an improvement of an insolubilization treatment apparatus that enables insolubilization treatment, which is a treatment for preventing elution of substances harmful to human bodies contained in contaminated soil to be backfilled into underground water. .

  For example, the earth and sand excavated during the construction of a building is used for backfilling in recent years, but as soil quality improvement devices that improve the soil quality such as supplementing the strength of the backfilled sand and sand, For example, various proposals have been made so far, such as that described in Patent Document 1.

  On the other hand, in a broad sense, it can be said that the soil quality is improved, but when the soil to be backfilled does not have insufficient strength and contains harmful substances such as heavy metals that are harmful to the human body, that is, if it is contaminated soil After refilling, it is necessary to prevent toxic substances from leaching from the contaminated soil into the ground water.

Therefore, by using soil improvement devices such as those disclosed in Patent Document 1 above, the harmful substances contained in the contaminated soil are solidified in the contaminated soil so that the harmful substances do not elute into the ground water. It can be said that the treatment to be performed, that is, the insolubilization treatment may be performed.
JP-A-11-140904 (paragraphs 0001, 0017, 0020, FIGS. 1, 2, and 3 in the specification)

  However, in the case of insolubilization treatment for solidifying harmful substances contained in the contaminated soil into the contaminated soil, it may be pointed out that diversion of soil improvement devices such as that disclosed in Patent Document 1 is not preferable. is there.

  That is, when diverting soil quality improvement devices such as those disclosed in Patent Document 1 described above to insolubilization processing of contaminated soil, since it is not originally configured for insolubilization processing, efficient insolubilization processing is realized. Therefore, there is a risk that harmful substances that are not insolubilized in the contaminated soil to be backfilled and are eluted in the ground water will remain.

  This is because the soil improvement devices proposed so far are not originally configured for insolubilization, so when diverting them, reliable insolubilization can not be realized, and there will be few. However, there is a risk that contaminated soil that has not been insolubilized will be discharged, that is, contaminated soil that is not insolubilized and that leaves harmful substances that are eluted in underground water will be discharged.

  When the soil improvement devices so far are repeatedly used for insolubilization, there is a risk that the nuisance of harmful substances during use of the soil improvement devices cannot be prevented.

The present invention was devised in view of such a current situation, and the object of the present invention is to provide an insolubilization apparatus capable of widely and efficiently realizing insolubilization of harmful substances contained in contaminated soil to be backfilled. Is to provide.

To achieve the above object, the configuration of the insolubilization treatment device according to the present invention, basically, a base, a supply means to accept contaminated soil is disposed on the base, on the base in insolubilization treatment device in which a is disposed insolubilized treating contaminated soil from said supply means and processing means for discharging to the outside of the base, the
Includes a hopper for introducing contaminated soil the supply means to remove obstacles, and a supply unit conveyor for conveying the polluted soil in the hopper towards said processing means,
Said processing means crushing and processing unit conveyor for conveying out the polluted soil of the base from the feed section conveyor, is disposed above the processing part conveyor polluted soil on the processing unit conveyor and grinding mechanism, this is arranged above the processing unit conveyor while series grinding mechanism, the polluted soil on the processor conveyor by receiving supply of the drug from the drug supply source disposed on the base A treatment mechanism for insolubilization treatment,
End side of the supply portion conveyor is positioned above the starting end side of the processing section conveyor, the conveying direction of the contaminated soil due to the transport direction and the processing unit conveyor of the contaminated soil by the supply unit conveyor of the L-shape in plan view Present,
Endless belt is rotationally driven by an appropriate driving source constitute the processing unit conveyor, at a site which is positioned in the region for arranging the above-described processing mechanisms above, the high on both sides along the traveling direction of the endless belt of the, while higher than the height of the central portion along the traveling direction of the endless belt is brought into contact with the lower end portion of the seal member to the both sides,
The sealing member is held by the frame body constituting the processing unit conveyor, or to become held by the other portion of the frame body neighborhood.

Therefore, in the present invention, the insolubilization apparatus is configured for the purpose of insolubilization of harmful substances contained in the contaminated soil to be backfilled, so that efficient insolubilization of harmful substances can be enabled. become.
And in this invention, the termination | terminus side of the supply part conveyor in a supply means is positioned above the start end side of the process part conveyor in a process means, and the conveyance direction of the contaminated soil by the supply part conveyor in a supply means, and the process in a process means Since the conveying direction of the contaminated soil by the partial conveyor is supposed to be L-shaped in plan view, the conveying direction of the contaminated soil by the supply conveyor and the processing conveyor is U-shaped or linear. As compared with the case, it is possible to prevent the insolubilization processing apparatus from being tampered with, and to improve the transportability and installation of the insolubilization processing apparatus.

In the present invention, the endless belt that is configured to constitute the processing section conveyor and is rotationally driven by an appropriate driving source is positioned in a region where the processing mechanism is disposed above the endless belt in the traveling direction of the endless belt. Since the height of both sides along the same direction is made higher than the height of the central portion along the direction of travel of the infinite belt, at least when contaminated soil is insolubilized by the processing mechanism, the contaminated soil is exposed from the processing section conveyor to the outside. It is possible to reliably prevent leakage by using the seal member in combination.
At this time, according to the present invention, the lower end portion of the seal member is brought into contact with both side portions along the traveling direction of the infinite belt , and the seal member is held by the frame body constituting the processing unit conveyor, or the frame Since it is held in the other part in the vicinity of the body, leakage of the sprayed medicine is prevented.

  As a result, according to the present invention, the insolubilization processing of the contaminated soil by the processing mechanism can be completed completely, and the surrounding contamination due to leakage of the contaminated soil in the region of the processing mechanism to the outside is not feared.

Hereinafter, the present invention will be described based on the illustrated embodiment. However, the insolubilizing apparatus according to the present invention is assumed to be mounted on a truck and transportable.

  Therefore, in this insolubilization apparatus, when a truck having a load weight of 4 tons is selected as the truck, for example, a road width of 4 meters narrower than a road width of 6 meters is selected from the specification. It is possible to travel along the roadway, and the movement range of the insolubilizing apparatus, that is, the conveyance destination can be widened.

  And this insolubilization processing apparatus is arrange | positioned on this base B which consists of the base B which consists of a loading platform connected so that it may mount on the rear frame of a truck, as shown in FIG.1, FIG.2 and FIG.3. Supply means S that accepts the excavated contaminated soil, and processing means D that is also disposed on the base B and insolubilizes the contaminated soil supplied from the supply means S and discharges it out of the base B It is said that it has.

  Here, the contaminated soil will be explained. In many cases, harmful substances such as heavy metals that are harmful to the human body are usually contained in soil or soil mixed with sand. The term "contaminated soil" refers to soil mixed with soil or sand, and is not limited to so-called "soil".

When the insolubilizing apparatus of the present invention is mounted on a truck and set to a portable type as in the illustrated embodiment, the base B is fixedly connected to the rear frame of the truck. However, in the case where the base B is detachably connected to the rear frame of the truck, the base B is separated from the rear frame of the truck, that is, is lowered and moved to an appropriate flat ground or the like. By doing so, the insolubilization apparatus of this invention can be changed from a portable type to an installation type.

In addition, when implementing the insolubilization treatment apparatus of the present invention, when the base B selects a so-called retrofitted setting to the rear frame of the truck, even if no truck is prepared, It is possible to dispose the supply means S and the processing means D. Therefore, not only the productivity is improved, but also various operations in the insolubilization processing apparatus of the present invention do not depend on the drive source of the truck. Selection of the setting, that is, for example, so-called all-electricalization of the insolubilization processing apparatus of the present invention, that is, all-electricalization can be made possible.

  In view of the above, the base B is made of a so-called single piece of a frame structure using a steel plate or a steel plate so as to have a predetermined mechanical strength, and is formed so as to be able to be lifted by a crane, for example. Is preferred.

  Next, as shown in FIG. 4, the supply means S includes a hopper 1 for introducing the contaminated soil from which obstacles have been removed, and a supply unit conveyor 2 that conveys the contaminated soil in the hopper 1 toward the processing means D. Furthermore, in the figure, it is assumed that a quantifier 3 that enables quantification of contaminated soil supplied to the processing means D by the supply unit conveyor 2 is provided.

  At this time, the contaminated soil thrown into the hopper 1 is a contaminated soil containing a substance harmful to the human body, for example, heavy metal, and an obstacle other than the harmful substance, for example, large stones, reinforcing bar scraps or concrete. The lump is said to have been removed beforehand.

  Various measures may be selected for the removal of large stones, rebar scraps or concrete blocks as obstacles, but preferably a skeleton bucket of a so-called sieve structure possessed by an excavator when excavating the ground etc. Should be used.

  That is, in the case of this skeleton bucket, when the contaminated soil excavated by the skeleton bucket is deposited in the deposition site, it is possible to remove large stones, rebar scraps or concrete blocks as obstacles by so-called sieving work.

  And in the case of this skeleton bucket, the skeleton bucket having the excavated contaminated soil is moved above the hopper 1 and the skeleton bucket is vibrated under the condition to realize the sieving operation, so that the obstacle is excavated. The contaminated soil from which the substances have been removed can be directly put into the hopper 1, and the insolubilization apparatus according to the present invention can be used even when there is no space for depositing the contaminated soil excavated in the so-called work area. Will get.

  Of course, there are various sizes of so-called sieves in the skeleton bucket, and a skeleton bucket having a sieve size that is optimal for the operation of the insolubilizing apparatus of the present invention is selected. Although not shown, a so-called sieve is disposed so as to close the inlet of the top of the hopper 1, so that the obstacle can be further removed by the sieve and the insolubilization treatment of the present invention is performed. Of course, it is also possible to obtain contaminated soil having a size that is optimal for the operation of the apparatus, that is, an optimal particle size.

  And although the sieve arrange | positioned so that the insertion port of the hopper 1 may be blocked | closed is also not illustrated, obstructions, such as a stone and a concrete lump which may be left on it, can fall naturally out of the base B. In this way, it is preferable that the so-called sieve surface is disposed obliquely.

  By the way, the hopper 1 is disposed on the base B, and in FIG. 2, the longitudinal direction thereof is disposed in a direction crossing the front-rear direction of the track along the width direction of the track. As compared with the case where the hopper 1 is arranged along the axial direction which is the front-rear direction of the truck, it is possible to avoid the overall length of the base B and the insolubilizing apparatus.

  In addition, in this way, the hopper 1 is arranged in the so-called lateral direction slightly on the right side of the base B, and the medicine supply source T described later is arranged on the rear side of the hopper 1. It becomes possible to make the load of the contaminated soil thrown into the hopper 1 act near the center in the front-rear direction of the truck having the base B.

  Further, in this case, the weight of the processing means D on the left side of the base B is set in the truck having this base B with the weight of the soil, the chemical supply source T and the chemical charged in the hopper 1 and the hopper 1. By preventing the load distribution from being biased to the so-called side, it is possible to eliminate the need to provide an anti-swing structure or a support structure for the base B during the insolubilization process (see FIG. 2).

Of course, when the hopper 1 is positioned so that the supply section conveyor 2 below the hopper 1 is arranged in parallel with the processing section conveyor 4 in the processing means D described later, the hopper 1 is placed closer to the center of the base B. Since positioning becomes possible, it can be said that it is optimal to prevent the load distribution in the track described above from being biased.

However, in this case, the hopper 1, that is, the supply means S is arranged in parallel with the processing means D. As a result, when the insolubilization processing apparatus of the present invention is implemented, the supply means S is provided. The disadvantage that it is required to provide a new communication means that connects the processing means D, the arrangement position of the medicine supply source T is restricted, or the medicine capacity is reduced due to the restriction of the arrangement position of the medicine supply source T. Then there is a disadvantage that causes disadvantages.

  In view of the above, in the insolubilization apparatus of the present invention, the hopper 1 is preferably arranged on the base B in a direction crossing the front-rear direction of the truck. Assuming that it is arranged so as to be adjacent to the generator G arranged immediately afterward, it is preferable that no dead space appears on the base B (see FIG. 1).

  On the other hand, the supply section conveyor 2 conveys the contaminated soil thrown into the hopper 1 toward the processing means D, and the infinite belt 22 moves in the direction of the arrow shown in the figure by driving the built-in electric motor 21. The contaminated soil thrown into the hopper 1 is moved so as to be lifted from the low-side start end side on the right side in the drawing to the high-side end side on the left side in the drawing.

  In order to quantify the flow rate of the contaminated soil to be discharged toward the processing means D by the supply unit conveyor 2, the feeder unit 2 has a quantifier 3, which enables predetermined quantification. Any configuration may be selected as long as it is obtained.

  By the way, this quantifier 3 stabilizes the thickness of the contaminated soil on the terminal side of the supply section conveyor 2 by a rotor that rotates in a direction indicated by an arrow in the figure by driving an electric motor (not shown). Accordingly, the amount of contaminated soil supplied to the processing means D is made uniform.

  By the way, as for the above-mentioned supply means S, basically, it is sufficient that the contaminated soil put into the hopper 1 is formed so as to be supplied to the processing means D by the supply section conveyor 2. It is important to prevent the leakage of contaminated soil between the lower end of the hopper 1 and the supply section conveyor 2.

  Therefore, in the illustrated embodiment, as shown in FIG. 4, it is assumed that the hopper 1 has a seal member 11 on the inner periphery of the lower end portion, and the seal member 11 extends so-called horizontally long. It is formed in a band shape, and the lower end is brought into contact with the upper surface of the infinite belt 22 while the upper end is connected to the inner periphery of the hopper 1. It is supposed to prevent leaking outside.

The supply unit conveyor 2 is mainly intended to efficiently supply the contaminated soil introduced into the hopper 1 to the processing means D. Therefore, the supply unit conveyor 2 has a free configuration as long as this efficient conveyance of the contaminated soil can be practiced. Good to be.

At this time, the plurality of rollers 23 in the supply unit conveyor 2 that support the endless belt 22 from below have a V-shaped cross section or a concave shape when viewed from the width direction, which is a direction crossing the moving direction of the endless belt 22. and it may become, may be made is configured so as to facilitate unity of the contaminated soil on the endless belt 22.

  Whereas the supply means S is formed as described above, the processing means D receives the contaminated soil conveyed from the supply section conveyor 2 as shown in FIG. 2)), a crushing mechanism 5 disposed above the processing unit conveyor 4 for crushing contaminated soil on the processing unit conveyor 4, and in series with the crushing mechanism 5. On the processing unit conveyor 4 while receiving the supply of the medicine from the medicine supply source T (see FIG. 1, FIG. 2 and FIG. 3) which is also disposed above the processing unit conveyor 4 and disposed on the base B. And a processing mechanism 6 for insolubilizing the contaminated soil.

5, in the processing means D, the crushing mechanism 5 is positioned closer to the starting end side on the left side in the drawing of the processing unit conveyor 4 than the processing mechanism 6, that is, in front of the processing mechanism 6. as formed by, trying to achieve the insolubilization treatment by the supply of the drug at the processing mechanism 6 established a granularity in the supplied polluted soil from the supply means S in the grinding mechanism 5.

Thus, in the processing means D, the crushing mechanism 5 is positioned in front of the processing mechanism 6, that is, the crushing mechanism 5 and the processing mechanism 6 are positioned in a directly connected state. This can contribute to the overall compactness of the apparatus. In particular, when considering that the supply unit conveyor 2 and the processing unit conveyor 4 which will be described later are arranged in an L shape in plan view, This greatly contributes to the overall downsizing of the insolubilizing apparatus.

  Further, in this processing means D, the crushing mechanism 5 and the processing mechanism 6 are basically located above the processing unit conveyor 4 and are not perfect, but are covered by the cover body 7 and are contaminated by the crushing mechanism 5. It is assumed that the period between the earth crushing and the insolubilization process is terminated by the processing mechanism 6 is cut off from the atmosphere.

  As a result, assuming a situation where the insolubilization treatment apparatus of the present invention is used, it is extremely significant in particular to avoid scattering of harmful substances contained in the contaminated soil when the crushing mechanism 5 is operated. Contributes to the prevention of the scattering of harmful substances.

  At this time, the cover body 7 is formed in a tunnel shape having an inverted U-shaped cross-section that opens the lower end, and is supported by being placed on both sides of the processing unit conveyor 4 that is below. Alternatively, when the cover body 7 or the upper surface portion of the cover body 7 is removed from the disposed position, assuming that the cover body 7 is held by an appropriate support structure disposed on the base B, the crushing mechanism 5 and the processing mechanism 6 may be exposed, and for example, inspection of the crushing mechanism 5 and the processing mechanism 6 may be enabled.

  In addition, in the cover body 7 described above, an opening 7a is provided at a portion covering a so-called merged portion of the supply unit conveyor 2 in the supply unit S and the processing unit conveyor 4 in the processing unit D, as shown in FIG. It is said that it is possible to check the situation of the above-mentioned joining portion from above so-called through the opening 7a.

  Incidentally, since the opening 7a is on the upstream side of the crushing mechanism 5, it can be said that there is a low possibility that harmful substances are scattered in the atmosphere through the opening 7a. Although not shown, for example, a blower that blows air toward the processing mechanism 6 is installed upstream of the crushing mechanism 5, or is installed between the crushing mechanism 5 and the processing mechanism 6, and harmful substances are introduced. It may be considered not to flow backward to the opening 7a side.

  Further, although not shown, it is of course possible to provide a partition between a pulverizing rotor 51 (described later) at the left end in FIG. 5 and the supply section conveyor 2 to prevent the scattering and protect the supply section conveyor 2. It is.

As will be described below, first, in the figure, the flow direction of the contaminated soil in the processing means D is orthogonal to the flow direction of the contaminated soil in the supply means S on the base B. Therefore, according to the present invention. In the insolubilization processing apparatus, the conveying direction of the contaminated soil by the supply unit conveyor 2 and the processing unit conveyor 4 is L-shaped in plan view (see FIG. 2).

That is, the terminal side of the supply unit conveyor 2 which is the lower end side in FIG. 2 is positioned above the start side of the processing unit conveyor 4 which is also the left end side in FIG. Are assumed to have an L shape in plan view.

  Therefore, in this kind of insolubilization processing apparatus, on the base B, the conveying direction of the contaminated soil by the supply unit conveyor 2 and the processing unit conveyor 4 may be U-shaped or linear. Compared to a certain case, in the insolubilization processing apparatus of the present invention, it is possible to prevent the base B from being unnecessarily long, and it is possible to improve transportability and installability in the insolubilization processing apparatus.

In addition, as described above, the supply unit S and the processing unit D are arranged so as to have an L shape in a plan view, and the hopper 1 is placed at the center of the base B. By arranging so-called sideways, it becomes possible to cause the load of the contaminated soil introduced into the hopper 1 in the supply means S to act closer to the center of the base B. There is no need to provide an outrigger or the like.

  Next, in the insolubilization processing apparatus according to the present invention, the contaminated soil supplied from the supply means S to the processing means D is continuous as described above, because the supply means S includes the quantifier 3. Will be supplied evenly.

At this time, as described above, in the insolubilization treatment apparatus according to the present invention, the flow direction of the contaminated soil in the supply means S is orthogonal to the flow direction of the contaminated soil in the treatment means D. In the case where the end of the conveyor 2 is positioned at the center on the start end side of the processing unit conveyor 4, contaminated soil is deposited on the central portion of the processing unit conveyor 4 as shown by a broken line hatching diagram in FIG. 2. Become so.

  Therefore, it is possible to effectively prevent the contaminated soil supplied from the supply unit conveyor 2 from leaking to the outside at the start end side portion of the processing unit conveyor 4, and when the crushing mechanism 5 is operated after dredging. The grinding efficiency can be improved.

  By the way, the processing section conveyor 4 basically has a well-known configuration in which the endless belt 42 is supported by a plurality of rollers 41, and the endless belt 42 in the supply means S described above is illustrated. It is assumed that it is driven by a built-in electric motor 43 similarly to the supply unit conveyor 2.

  Further, the upper surface of both end portions and the start end portion of the endless belt 42 is in contact with the lower end portion of the seal member 71 that prevents the contaminated soil from leaking outside through the lower end of the cover body 7, Regarding the holding of the seal member 71, the upper end portion is connected to the cover body 7 in the drawing, but instead of this, the frame that the sealing member 71 constitutes the processing unit conveyor 4 is not shown. Of course, it may be held by the body 45 (see FIG. 6).

  As for the roller 41, as described above, on the start end side of the processing unit conveyor 4, a state in which contaminated soil is accumulated in the central portion of the infinite belt 42 is expressed. What is necessary is just a structure which enables 42 to transfer the contaminated soil to the processing mechanism 5 with the state maintained.

  Incidentally, the endless belt 42 in the processing unit conveyor 4 is in a so-called flat belt state in the drawing, but as long as there is no problem in the operation of the crushing mechanism 5 described later, for example, the endless belt 42 is used. A measure may be selected that makes the contaminated soil on the endless belt 42 easy to be gathered by making the cross-section V-shaped or concave when viewed from the width direction, which is a direction crossing the moving direction of the.

  On the other hand, the crushing mechanism 5 includes a plurality of crushing rotors 51, 52, 53 driven by the respective electric motors 50. The crushing rotors 51, 52, 53 are located above the processing unit conveyor 4. 5 is arranged in the extending direction of the processing unit conveyor 4 which is in the right direction in FIG.

  At this time, each crushing rotor 51, 52, 53 is formed by connecting a large number of blades 51 b, 52 b, 53 b to rotating shafts 51 a, 52 a, 53 a arranged in the width direction of the processing unit conveyor 4. The blades 51b, 52b, and 53b rotate in the axial direction of the processing unit conveyor 4 in the left-right direction in FIG. 5 so that the contaminated soil on the processing unit conveyor 4 is crushed to a predetermined particle size.

  At this time, the lower ends of the blades 51b, 52b, 53b in the grinding rotors 51, 52, 53 are opposed to the upper surface of the infinite belt 42 in the lower processing unit conveyor 4 with an appropriate interval. The passage of contaminated soil that is less than this interval is allowed.

  At this time, the disposing positions of the rotating shafts 51a, 52a, 53a in the respective crushing rotors 51, 52, 53 are so-called eccentric with respect to the disposing positions of the rollers 41 that support the infinite belt 42 from below. As a result, a situation in which contaminated soil is sandwiched between the lower ends of the blades 51b, 52b, and 53b and the upper surface of the infinite belt 42 is not expressed.

  In this crushing mechanism 5, the rotation direction of each crushing rotor 51, 52, 53 is a so-called scraping direction with respect to the so-called traveling direction of the processing unit conveyor 4 as indicated by an arrow in the figure. However, instead of this, the rotation directions of the respective crushing rotors 51, 52, 53 may all be reversed, and any selected rotation direction may be reversed. Of course it is also good.

  Furthermore, the rotational speeds of the respective grinding rotors 51, 52, and 53 are different from each other, and it is assumed that problems caused in so-called agitation are avoided when the rotational speeds are the same.

  In addition, as shown in the figure, the blades 51b, 52b, 53b of the crushing rotors 51, 52, 53 are made of an angle material that is a mold having an L-shaped cross section, but as long as the desired crushing can be realized. Of course, any configuration of shapes may be selected.

  As for the pulverization mechanism 5 described above, the present invention aims to pulverize the contaminated soil. From the viewpoint of its function, it can be said that the contaminated soil is being stirred while being crushed. Of course, it may be referred to as “stirring mechanism” or simply “stirring mechanism”.

  The processing unit conveyor 4 formed as described above conveys the contaminated soil pulverized by the pulverizing mechanism 5 toward the processing mechanism 6. In this case, however, the contamination on the processing unit conveyor 4 is illustrated. It is assumed that the thickness is adjusted by the leveling means 72 before the soil enters the so-called area of the processing mechanism 6.

  As for the leveling means 72, since a very strong structure may cause so-called clogging, it is preferable to select a structure having the same thickness without difficulty. .

  Further, as for the leveling means 72, as a result of the operation of the crushing mechanism 5 upstream thereof, the contaminated soil on the processing unit conveyor 4 has a uniform thickness, that is, the contaminated soil has a uniform thickness. However, the arrangement may be omitted.

  Whereas the processing unit conveyor 4 and the crushing mechanism 5 are configured as described above, the processing mechanism 6 is located above the processing unit conveyor 4 in series and is connected in series to the so-called downstream side of the crushing mechanism 5. It is assumed that the contaminated soil on the processing unit conveyor 4 is insolubilized by receiving the supply of the medicine from the medicine supply source T (see FIG. 2) arranged on the base B.

  By the way, the processing mechanism 6 may be referred to as a “medical spraying mechanism” or a “medical spraying processing mechanism” because it is supposed that the contaminated soil is insolubilized by spraying a drug as an insolubilizing agent. Then, it will be simply referred to as “processing mechanism”.

  At this time, in the illustrated embodiment, since the contaminated soil contains heavy metals as harmful substances, a mineral insolubilizing agent or the like, which is a treatment agent that enables insolubilization of the heavy metals, is selected as the agent.

  In many cases, the mineral insolubilizing agent is supplied from a so-called manufacturer in a state where the mineral insolubilizing agent is accommodated in a polyethylene tank or the like. Although it is held on a holding base having a frame structure erected at a place, it may be supplied to a so-called dedicated tank for transshipment provided on the base B instead.

  And in the processing mechanism 6, it is supposed that the chemical | medical agent which added water and was made into the slurry form will be sprayed to the contaminated soil which exists on the process part conveyor 4 with the injector 61, At this time, the chemical | medical agent from the injector 61 will be injected. In order not to diffuse unnecessarily, the shape in which the medicine is sprayed is not conical, but is infinitely fan-shaped. In addition, in the area of the processing mechanism 6, the transport unit of the processing unit conveyor 4 covers the cover described above. The body 7 is shielded from the outside.

  As a result, since the contaminated soil is thinly spread and finely crushed on the conveying section of the processing unit conveyor 4, it is made into a slurry that easily penetrates into the contaminated soil in this state. The drug can be concentrated and sprayed, and the contaminated soil can be effectively insolubilized with a small amount of drug.

  Incidentally, the injector 61 is held so as to be separable from the cover body 7 described above, and when it is separated from the cover body 7, it is of course possible to allow inspection and maintenance. Furthermore, it is possible to swing in the width direction of the processing unit conveyor 4 in a state of being held by the cover body 7 so that the spraying efficiency of the drug against the contaminated soil can be increased.

  At this time, as described above and as shown in FIG. 6, the seal member 71 is held at the lower end portion of the cover body 7, and the front ends of the seal member 71 are located on both sides of the processing unit conveyor 4. It is preferable that leakage of the sprayed medicine is prevented by contact with.

Further, in the area of the processing mechanism 6, the contaminated soil on the processing unit conveyor 4 does not diffuse on both sides of the processing unit conveyor 4, and the chemical sprayed from the injector 61 is surely made into the contaminated soil. The roller 44 that supports the endless belt 42 from below in the area of the processing mechanism 6 in order to be sprayed has a V-shaped cross section when viewed from the width direction, which is a direction crossing the moving direction of the endless belt 42. It is formed to be concave or concave.

  That is, in the area of the processing mechanism 6, the rollers 44 are formed as shown in FIG. 6, and as shown in FIG. It is assumed that it is formed so as to be higher than the so-called center portion of the infinite belt 42.

  For the roller 44 positioned at the end of the area of the processing mechanism 6, the endless belt 42 may be folded back so that a load is not applied to the endless belt 42 (B in FIG. 6). ), The infinite belt 42 is formed in a cylindrical roller shape so as to be a flat belt.

  Of course, a plurality of rollers 44 are used, but the number of the rollers 44 arranged and the interval between the rollers 44, that is, the interval in the moving direction of the infinite belt 42 are arbitrary. good.

  Incidentally, with regard to the realization of the roller 44, for example, there is a method of aligning so-called divided parts on the same axis, and a frustoconical cylinder that is a so-called raised body is fitted to the core roller. Although there is a measure to be worn, the point is that it is only necessary to realize that the cross section in the width direction of the infinite belt 42 is V-shaped or concave.

  As described above, in the processing unit conveyor 4 in the area of the processing mechanism 6, the height of both end portions of the infinite belt 42 is higher than the height of the central portion, and therefore, It is possible to easily collect some contaminated soil at the center of the infinite belt 2, and effectively prevent the contaminated soil from leaking outside by crossing the lower end of the cover body 7 on both sides of the infinite belt 42. .

  Therefore, in the processing mechanism 6 described above, when the contaminated soil used for backfilling contains substances that are harmful to the human body, for example, heavy metals, it is possible to enable insolubilization of heavy metals using chemicals. Thus, it becomes possible to discharge the contaminated soil after the insolubilization of the heavy metal, that is, out of the base B.

In addition, although arbitrary measures can be employ | adopted about discharge | emission outside the base B which is the exterior of the contaminated soil which the insolubilization process was complete | finished, for example, as shown in a virtual diagram in FIG. When the equipped truck is set to convey the belt conveyor 8 at the same time, as shown in FIG. 3, the belt conveyor 8 is used to backfill or deposit the treated contaminated soil at a predetermined position. Etc. can be easily made possible.

  In addition, about using the said belt conveyor 8, this is installed along the width direction of a track as shown in FIG. 3, and although not shown in figure, it is along the front-back direction of a track behind the base B. Of course, it may be installed.

  At this time, the driving of the belt conveyor 8 is also driven by using a power generator G described later, and it is a matter of course that the driving is controlled by the control panel C.

As described above, in the insolubilization apparatus according to the present invention, when it is mounted on a vehicle that is small compared to a 4-ton truck or the like and can be moved, it is of course a narrow house It can be moved to the ground, and its range of action can be widened.

  And since the insolubilization processing apparatus by this invention is comprised for the purpose of insolubilization processing, the insolubilization processing of the harmful substance contained in the contaminated soil to be backfilled can be efficiently realized.

  By the way, in the processing means D described above, the processing mechanism 6 is arranged in series on the downstream side of the crushing mechanism 5, but in view of the properties of the drug used in the present invention, Such a design change can be made.

  That is, as described above, it is possible to assume that a drug that insolubilizes heavy metals, for example, a mineral insolubilizer, reacts by being added to water, so that it does not react until it is added. It can be said that the contaminated soil may be pulverized by the pulverizing mechanism 5 after the powdered chemical is added to the soil.

Therefore, although not shown, the pretreatment unit in the processing means D in which the treatment mechanism 6 spreads the medicine from the medicine tank on the base B to the contaminated soil on the treatment part conveyor 4, and the contamination to which this medicine is added. And an end treatment unit that injects water from the water tank on the base B to the soil. At this time, the crushing mechanism 5 is positioned between the preliminary treatment unit and the end treatment unit. It is supposed to be.

  Therefore, in the case of this embodiment, since it is not necessary to connect the medicine tank for storing the medicine and the water tank in the medicine supply source T, the spraying of the medicine and the watering operation are made independent. In addition to being advantageous in terms of operability, it is possible to cope with complex contamination in the case of setting to spray other chemicals instead of water.

  At this time, for example, since the above-described preliminary processing section is provided with the opening 7a in the cover body 7 described above, the preliminary processing section is preferably provided so as to close the opening 7a from above. It would be advantageous in that no tampering design changes are required to provide the processing unit.

  The above is the main feature of the insolubilization treatment apparatus according to the present invention. In addition, in the insolubilization treatment apparatus according to the present invention, the following consideration is made.

  First, in the insolubilization apparatus according to the present invention, in addition to the supply section conveyor 2 in the supply means S, the processing section conveyor 4 and the crushing mechanism 5 in the processing means D, which are the main driving devices, the quantifier 3 in the supply means S Etc. are driven by the electric motors 21, 43, 50. Therefore, the generator G is arranged on the base B. By using the generator G as a power source, the present invention can be used. The insolubilization treatment apparatus can be easily all-electrically driven, that is, all electrified easily.

  Incidentally, in the insolubilizing apparatus of the present invention, the generator G is arranged on the base B immediately after the driver's seat of the truck because the base B is connected to the rear frame of the truck. In addition, it is assumed that, like the hopper 1 in the supply means S described above, a dead space does not appear unnecessarily on the base B so that its longitudinal direction is along the width direction of the base B.

  As a result, the insolubilization apparatus according to the present invention can be used in a so-called ecological idea, for example, by eliminating the need for hydraulic pressure as compared with a case where main driving equipment is operated with a truck running engine as an output source. It becomes possible to follow.

  In the insolubilization apparatus according to the present invention, the driving of the supply unit conveyor 2, the processing unit conveyor 4 and the crushing mechanism 5 which are main driving devices is controlled by the control panel C provided on the base B. It is going to be done.

  At this time, the control panel C is located at a position away from the hopper 1 in the supply means S described above, that is, from the hopper 1 so that the medicine supply source T is disposed between the control panel C and the hopper 1 in the drawing. Separately, it is considered that the construction machine when the contaminated soil is put into the hopper 1 cannot interfere with the control panel C.

  Furthermore, in the insolubilization treatment apparatus according to the present invention, a plurality of emergency stop buttons S1, S2, S3 are arranged at arbitrary positions on the base B as shown by x in FIG. At the same time, when any one of the emergency stop buttons S1, S2, S3 is turned on, the supply means S, that is, the supply section conveyor 2 and the processing means D in the supply means S, that is, the processing section conveyor 4 in the processing means D The driving can be stopped so that a so-called emergency situation can be dealt with.

  Incidentally, when the emergency stop buttons S1, S2, S3 are turned on, it goes without saying that a warning light may be turned on or an alarm sound may be emitted.

1 is a schematic elevation view of a side surface of a truck equipped with an insolubilization apparatus according to the present invention. FIG. 2 is a schematic plan view of the track of FIG. 1. FIG. 2 is a schematic elevation view of a rear side of the track of FIG. 1. It is a longitudinal cross-sectional view of the supply means seen from the back side of a track. It is the longitudinal cross-sectional view of the processing means seen from the side of the track. It is a figure which shows the roller in the process part conveyor in the area of a process mechanism with an infinite belt.

Explanation of symbols

B base C control panel D processing means G generator S supply means S1, S2, S3 emergency stop button T drug supply source 1 hopper 2 supply section conveyor 3 meter 4 processing section conveyor 5 grinding mechanism 6 processing mechanism 7 other parts Cover body 42 Infinite belt 43 Electric motor as drive source 45 Frame body 71 Seal member

Claims (7)

Discharging a base, a supply means to accept contaminated soil is disposed on the base, outside the contaminated soil insolubilizing treatment to the base after being disposed on said base said supply means Insolubilization processing apparatus comprising processing means for
Includes a hopper for introducing contaminated soil the supply means to remove obstacles, and a supply unit conveyor for conveying the polluted soil in the hopper towards said processing means,
Said processing means crushing and processing unit conveyor for conveying out the polluted soil of the base from the feed section conveyor, is disposed above the processing part conveyor polluted soil on the processing unit conveyor and grinding mechanism, this is arranged above the processing unit conveyor while series grinding mechanism, the polluted soil on the processor conveyor by receiving supply of the drug from the drug supply source disposed on the base A treatment mechanism for insolubilization treatment,
End side of the supply portion conveyor is positioned above the starting end side of the processing section conveyor, the conveying direction of the contaminated soil due to the transport direction and the processing unit conveyor of the contaminated soil by the supply unit conveyor of the L-shape in plan view Present,
Endless belt is rotationally driven by an appropriate driving source constitute the processing unit conveyor, at a site which is positioned in the region for arranging the above-described processing mechanisms above, the high on both sides along the traveling direction of the endless belt of the, while higher than the height of the central portion along the traveling direction of the endless belt is brought into contact with the lower end portion of the seal member to the both sides,
The sealing member is held by the frame body constituting the processing unit conveyor, or insolubilization apparatus characterized by comprising stored in a different portion of the frame body neighborhood. While the processing mechanism is being positioned to the rear of the grinding mechanism, with the drug supplied from the agent supply source is an insolubilizing agent, the processing mechanism is slurried milled already contaminated soil by the grinding mechanism The insolubilization apparatus according to claim 1, wherein the insolubilizing agent is sprayed. A pretreatment unit for the processing mechanism spraying the agent to contaminated soil on the processing unit conveyor, water and other drugs together with and a sewage treatment unit for injecting the polluted soil on the processing unit conveyor, the pre-treatment The insolubilization processing apparatus of Claim 1 or Claim 2 by which the said crushing mechanism is positioned between a part and a terminal treatment part. The insolubilization processing apparatus according to claim 1, wherein the base is a loading platform connected to a rear frame of the truck. Claim 1 formed by an electric type in which the supply means and the processing means to power the generator disposed on the base, according to claim 2, insolubilization processing apparatus according to claim 3 or claim 4. Claim 1, the drive is controlled by the control board disposed on the base of said supply means and said processing means, according to claim 2, claim 3, insolubilization processing apparatus according to claim 4 or claim 5 . A plurality of emergency stop button on the base is disposed, the emergency stop button at the on-operation to the driving of the supply means and the processing means formed by a stoppable claim 1, claim 2, wherein The insolubilization processing apparatus according to claim 3, claim 4, claim 5 or claim 6.

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