Large-volume soil-killing device and large-volume soil-killing method

Abstract

To more efficiently exterminate harmful organisms mixed in soil, sand, and stones. [Solution] Large-volume soil insecticide device M is a device that uses chemicals, steam or fumigants to exterminate harmful organisms attached to or mixed in soil and stone used in civil engineering and construction work, and is equipped with a cylindrical shell (outer shell 2), a screw conveyor SC that transports the soil and stone inside the shell, a nozzle 4 that supplies the chemicals, steam or fumigants into the shell by spraying or scattering, and a plate (spatula steel plate 81) that rotates together with the screw conveyor SC. The screw conveyor SC has a main shaft 8 and screw-type blades 1 that are spirally attached to the main shaft 8. The plate lifts and loosens the soil and stone, bringing harmful organisms mixed in the soil and stone into contact with the chemicals, steam or fumigants supplied from the nozzle.

Description

[Technical field]

[0001] The present invention relates to a large-volume soil pest control device and a large-volume soil pest control method that use chemicals, steam, or fumigants to sterilize, disinfect, exterminate, and control harmful organisms that have attached to or become mixed into soil, stone, etc. used in civil engineering and architectural construction work. [Background technology]

[0002] It is known that insects (living pests) that harm human life such as mosquitoes and ants, foreign organisms, and harmful microorganisms (harmful organisms) such as E. coli and bacteria that attach to and breed on living materials in people's living spaces can be sterilized, disinfected, exterminated, and controlled by spraying or scattering chemicals such as chemicals, steam, or fumigants onto them. When using this method to kill insects, if the target object is soil, stone, or the like (hereinafter referred to as "soil and stone") collected from a quarry or borrow pit, and living pests or harmful insects attach to or are mixed into the soil and stone, a device for sterilizing, disinfecting, exterminating, and controlling these harmful organisms has been known for some time (see Patent Document 1).

[0003] Specifically, in this device, during the process of transporting soil and stones using a screw blade, a chemical is sprayed from a spray nozzle to eliminate harmful organisms that have become mixed in with the soil and stones. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3200633 Summary of the Invention [Problem to be solved by the invention]

[0005] There is a demand for more efficient methods of eliminating harmful organisms that have become mixed in with soil, sand, and stone.

[0006] Therefore, an object of the present invention is to more efficiently exterminate harmful organisms that have become mixed in with soil, sand, and stones. [Means for solving the problem]

[0007] In order to solve the above problems, the large-scale soil pest control device of the present invention is a large-scale soil pest control device that uses chemicals, steam or fumigants to exterminate harmful organisms attached to or mixed into soil, sand or stone used in civil engineering and construction work, and is equipped with a cylindrical shell, a screw conveyor for transporting the soil, sand or stone inside the shell, a nozzle for supplying the chemicals, steam or fumigants into the shell by spraying or scattering, and a plate that rotates together with the screw conveyor. The screw conveyor has a main shaft and screw-type blades spirally provided on the main shaft. The board lifts and loosens the soil and stones, exposing pests entrained in the soil and stones to chemicals, steam or fumigants delivered from a nozzle.

[0008] According to this configuration, by lifting and loosening the soil and stones with the board, harmful organisms mixed in the soil and stones come into contact with the chemicals, steam or fumigants, so that harmful organisms mixed in the soil and stones can be exterminated more efficiently. In particular, by lifting and loosening the soil and stones with the board, the chemicals and the like can be effective not only on the surface of the soil and stones that are transported in a state of being accumulated at the bottom of the shell, but also on the insects that are between the particles that make up the soil and stones. Insect killing can also be promoted by the physical pressure or shear force when the board moves through the soil and stones.

[0009] Alternatively, the nozzle may be located inside the shell and above the main axis, and the plate may be located below the nozzle.

[0010] The plate may also raise the soil and stone material above the main axis.

[0011] With this configuration, the soil, sand, and stones being lifted by the board can be brought closer to the nozzle located above the main shaft, making it possible to more efficiently exterminate harmful organisms that have become mixed in with the soil, sand, and stones.

[0012] The plate may also have a first surface for lifting soil and rock material, the first surface being parallel to the axis of rotation of the screw conveyor.

[0013] According to this configuration, a larger amount of soil, sand, and stones can be lifted by the board, so that harmful organisms mixed in the soil, sand, and stones can be brought into contact with chemicals, etc. more efficiently.

[0014] Furthermore, at least a tip end portion of the first surface may be inclined so as to be positioned downstream in the rotation direction of the screw conveyor as it moves radially outward of the screw conveyor.

[0015] With this configuration, a large amount of soil and stone can be scooped up by the first surface.

[0016] The large-volume soil-killing device may also include a rib connecting a second surface of the plate opposite the first surface to the main shaft.

[0017] With this configuration, when the board is used to lift soil or stones, the force applied to the board from the soil or stones can be received by the ribs, thereby preventing damage to the board.

[0018] The plate may also be separate from the screw-type flight.

[0019] In addition, the large-scale soil and stone extermination method of the present invention is a large-scale soil and stone extermination method for exterminating harmful organisms attached to or mixed in soil and stone used in civil engineering and construction work using chemicals, steam or fumigants, and is characterized in that the soil and stone inside a cylindrical shell is transported by a screw conveyor, chemicals, steam or fumigants are supplied into the shell, the soil and stone inside the shell is lifted and loosened by a plate rotating together with the screw conveyor, and the harmful organisms mixed in the soil and stone are brought into contact with the chemicals, steam or fumigants.

[0020] According to this method, by lifting and loosening the soil and stones with a board, harmful organisms mixed in the soil and stones come into contact with the chemicals, steam or fumigants, so that harmful organisms mixed in the soil and stones can be more efficiently exterminated.

[0021] Additionally, a plate may be used to lift the soil and rocks above the main shaft of the screw conveyor.

[0022] In addition, the time taken from when the soil, sand, and stones are poured into the shell until when they are discharged from the shell may be set to one minute or more.

[0023] In addition, the time taken from when the soil, sand, and stone are put into the shell until when they are discharged from the shell may be set to 2 minutes or more. Effect of the Invention

[0024] According to the present invention, harmful organisms that have become mixed in with soil, sand, and stones can be more efficiently exterminated. [Brief description of the drawings]

[0025] [Figure 1] FIG. 2 is a side view of a large-volume soil insect killing device installed on the ground. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. [Diagram 3] This is a schematic diagram of the process of loading soil and stones onto a soil transport ship using a large-volume soil killing device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] The large-volume soil insect killing device used in this embodiment is shown in FIG. The large-volume soil insecticidal device M is a device that uses chemicals, steam or fumigants to exterminate harmful organisms that have attached to or become mixed into soil and stone used in civil engineering and construction work.

[0027] The large-volume soil insecticide device includes an outer shell 2 as an example of a shell, a screw conveyor SC, a liquid distribution pipe 3, a nozzle 4, a hopper 11, a chemical tank 5, and a main shaft motor 6. The screw conveyor SC, the liquid distribution pipe 3, and the nozzle 4 are installed inside the outer shell 2.

[0028] The outer shell 2 is a cylindrical member. More specifically, as shown in Fig. 2, the lower part of the outer shell 2 is semi-cylindrical, and the upper part is shaped like half of a rectangular cylinder.

[0029] The screw conveyor SC is a member that transports soil, sand, and stone materials within the outer shell 2. The screw conveyor SC has a main shaft 8, a screw-type blade 1 that is spirally provided on the main shaft 8, and a spatula steel plate 81 as an example of a plate.

[0030] The screw-type blade 1 is helical. The main shaft 8 is rotated in a direction indicated by a rotation direction 9 by a main shaft motor 6. The outer shell 2 is supported by a stand 7 installed on the ground, and the liquid distribution pipe 3 is connected to a liquid tank that contains a drug. The drug is pumped by a high-pressure pump or the like.

[0031] In this embodiment, a chemical agent is used to kill insects, but it is also possible to kill insects by steam or a fumigant. When killing insects by steam, the chemical tank 5 can be replaced with a steam generator that generates high-temperature steam. When killing insects by a fumigant, the chemical tank 5 can be replaced with a fumigation device that generates smoke.

[0032] The spatula steel plate 81 is a "L"-shaped spatula-shaped steel plate. The spatula steel plate 81 is separated from the screw-type blade 1. More specifically, the spatula steel plate 81 is fixed to the main shaft 8 between the peaks of the spiral of the screw-type blade 1, and the spatula steel plate 81 also rotates as the main shaft 8 rotates. The spatula steel plate 81 is located below the nozzle 4.

[0033] As shown in Fig. 2, the spatula steel plate 81 has a first surface F1 for lifting soil and stones. The first surface F1 is parallel to the rotation axis of the screw conveyor SC. The first surface F1 extends from the main shaft 8 to the radially outer side of the screw conveyor SC, and then inclines toward the radially outer side of the screw conveyor SC so as to be located downstream in the rotation direction of the screw conveyor SC.

[0034] A rib 82 is provided on a second surface F2 opposite to the first surface F1 of the spatula steel plate 81. The rib 82 connects the second surface F2 and the main shaft 8.

[0035] The liquid distribution pipe 3 is located above the screw conveyor SC between the soil / sand inlet 10 at one end of the outer shell 2 and the other end of the outer shell 2, which is the soil / sand / stone discharge outlet. The liquid distribution pipe 3 is installed inside the outer shell 2 as an integral part of the approximately cylindrical outer shell 2.

[0036] The nozzle 4 is a nozzle that supplies the medicine by spraying into the outer shell 2. A plurality of nozzles 4 are installed at equal intervals in the liquid distribution pipe 3. The nozzles 4 are located inside the outer shell 2 and above the main axis 8.

[0037] The hopper 11 is installed on one end side of the outer shell 2. The hopper 11 guides the input soil and stone materials to the soil input port 10 of the outer shell 2.

[0038] The soil and stones are fed from a hopper 11 located above the soil inlet 10, which is an opening at one end of the outer shell 2, and drop from the soil inlet 10, which is an opening at one end of the outer shell 2, and move in the direction indicated by the moving direction 13 while being stirred by the rotation of the screw-type blades. At the same time, the soil and stones are continuously shoveled away by the rotation of the spatula steel plate 81, and are stirred up and down. In addition, as the soil and stones move, they are sprayed with chemicals from the nozzles 4 above. Since multiple nozzles 4 are installed at equal intervals, the soil and stones are sprayed with chemicals from both the front and back as they move. When the soil and stones reach the soil discharge outlet 12 at one end of the outer shell 2 while being sprayed with chemicals, they are expelled to the outside (lower side) of the outer shell 2.

[0039] Specifically, the soil and stones transported in the moving direction 13 by the screw-type blades are located below the main shaft 8. The spatula steel plate 81 lifts the soil and stones located below the main shaft 8 above the main shaft 8. The soil and stones on the spatula steel plate 81 gradually crumble and become loose, exposing harmful organisms mixed in the soil and stones. This allows the liquid agent from the nozzle 4 to come into contact with the exposed harmful organisms, allowing the harmful organisms to be efficiently exterminated. Furthermore, the physical pressure or shear force applied when the spatula steel plate 81 moves the soil and stones can also promote insect killing.

[0040] The time taken from when the soil and rocks are poured into the shell 2 until when they are discharged out of the shell 2 is preferably 1 minute or more, and more preferably 2 minutes or more.

[0041] Fig. 3 shows an embodiment in which soil and stones are sterilized, disinfected, and insect-controlled and pest-controlled using the large-volume soil and insect-killing device M shown in Fig. 1, and then loaded onto a soil-carrying ship at sea from land. The soil and stones sterilized in the large-volume soil and insect-killing device M are continuously transported from the soil discharge port 12 to the hold of a soil-carrying ship 15 floating on the water surface 16, which is docked at a quay 17 connected to a belt conveyor 14.

[0042] As described above, the following effects can be obtained in this embodiment. By using the large-volume soil insecticide device M, continuous large-volume processing is possible because a continuous transport means such as a screw conveyor SC is used. In addition, the continuous transport means is a screw conveyor, and a spatula-shaped steel plate is placed on the rotating shaft of the screw conveyor, so the soil and stone are moved and processed while being stirred up and down, so that the insecticide can be effective not only on the surface but also on the insects between the particles that make up the soil and stone. In other words, by lifting and loosening the soil and stone with the spatula steel plate 81, harmful organisms mixed in the soil and stone come into contact with the insecticide, so that harmful organisms mixed in the soil and stone can be more efficiently exterminated. In addition, the physical pressure or shear force when the spatula steel plate 81 moves the soil and stone can also promote insect killing.

[0043] Since the nozzles 4 are provided at equal intervals on the distribution pipe 3 of the chemicals in the direction of transport of the soil and stones, the chemicals are applied to the soil and stones from the front and back of the moving soil and stones without any shielding areas, so that the chemicals can be used evenly. Since the screw conveyor SC, distribution pipe 3 and nozzles 4 are provided inside the outer shell 2 into which they are inserted, the chemicals used do not scatter to the outside, so that it is safe for workers and has no adverse effect on the external natural environment. The treated soil and stones can be continuously loaded onto a soil transport ship 15 via a belt conveyor 14 from the soil and stones discharge port of the screw conveyor SC, so that the soil and stones can be transported seamlessly from areas contaminated by harmful organisms (land) to non-contaminated areas (soil transport ship).

[0044] The soil, sand and rocks are stirred up and down by the rotating steel spatula 81, and are also stirred by the resistance caused by the rotation of the screw conveyor SC as they move toward the discharge outlet, and at the same time, the front and back are sprayed with chemicals from the multiple nozzles 4 at the front and back, and the stirring effect allows the chemicals to have an effect not only on the surface of the soil, sand and rocks, but also on the internal voids. Also, because the chemical distribution pipes 3 and nozzles 4 are inside the closed shell, there is no risk of the worker inhaling the chemicals, and the chemicals will not scatter to the surrounding area.

[0045] This will enable the transportation and supply of large quantities of soil, sand, and stone materials, which are used in construction projects, without causing any adverse effects on the environment of the destination area, contributing to the effective and efficient industrial use of resources across regions.

[0046] Furthermore, even if the soil and stones come from a contaminated area or the input port is in a contaminated zone, by transporting them seamlessly from the soil discharge port to, for example, a warehouse on a non-contaminated soil transport ship, it is possible to transport the soil and stones after sterilization and other treatments without causing recontamination.

[0047] The spatula steel plate 81 lifts the soil, sand and stones above the main shaft 8, so that the soil, sand and stones lifted by the spatula steel plate 81 can be brought close to the nozzle 4 positioned above the main shaft 8, and harmful organisms mixed in the soil, sand and stones can be more efficiently exterminated.

[0048] By making the first surface F1 of the spatula steel plate 81, which lifts the soil and stones, parallel to the rotation axis of the screw conveyor SC, the amount of soil and stones lifted by the spatula steel plate 81 can be increased, so that harmful organisms mixed in the soil and stones can be brought into contact with the chemicals more efficiently.

[0049] The tip portion of the first surface F1 is inclined so as to be positioned downstream in the rotation direction of the screw conveyor SC as it moves radially outward of the screw conveyor SC, so that a large amount of soil, sand, and stone can be scooped up by the first surface F1.

[0050] By configuring the spatula steel plate 81 to have a rib 82 connecting the second surface F2 and the main shaft 8, when the spatula steel plate 81 is used to lift soil or stones, the force applied to the spatula steel plate 81 from the soil or stones can be received by the rib 82, thereby preventing damage to the spatula steel plate 81.

[0051] The present invention is not limited to the above-described embodiment, but can be used in various forms as exemplified below. The first surface F1 may be flat instead of being L-shaped. Also, the entire first surface F1 may be inclined so as to be located downstream in the rotation direction of the screw conveyor as it moves radially outward of the screw conveyor.

[0052] The plate may be rotated by a device separate from the screw conveyor.

[0053] The elements described in the above-mentioned embodiment and modified examples may be implemented in any combination. [Explanation of symbols]

[0054] 1 Screw-type blade 2. Outer shell 4 Nozzles 8 spindle 81 Spatula Steel Plate M Large-volume soil insecticide device SC Screw Conveyor

Claims

1. A large-volume soil pest control device that uses chemicals, steam or fumigants to eliminate harmful organisms attached to or mixed in soil and stone used in civil engineering and construction work. A cylindrical shell and A screw conveyor for transporting soil, sand and stone in the shell, The main axis and a screw conveyor having a screw-type blade spirally provided on the main shaft; A nozzle for spraying or dispersing a chemical, vapor or fumigant into the shell; a plate that rotates together with the screw conveyor and lifts and breaks up the soil and stones, thereby bringing harmful organisms mixed in the soil and stones into contact with the chemical, steam or fumigant supplied from the nozzle; The plate has a first surface for lifting soil and stones; A large-volume soil insect killing device characterized in that at least the tip portion of the first surface is inclined so as to be located downstream in the direction of rotation of the screw conveyor as it moves radially outward of the screw conveyor.

2. A large-volume soil insect killing device as described in claim 1, characterized in that the first surface extends from the main shaft radially outward of the screw conveyor, and then inclines so as to be positioned downstream in the direction of rotation of the screw conveyor as it moves radially outward of the screw conveyor.

3. The nozzle is located inside the shell and above the main axis, 2. The large-volume soil-killing device according to claim 1, wherein the plate is located below the nozzle.

4. 4. A large amount of soil and insect killing device according to claim 3, wherein said plate raises soil and stones above said main shaft.

5. A large-volume soil and insect killing device as described in claim 1, characterized in that a second surface of the plate opposite the first surface is provided with a rib connecting the second surface and the main shaft.

6. A large-volume soil pest control device that uses chemicals, steam or fumigants to eliminate harmful organisms attached to or mixed in soil and stone used in civil engineering and construction work. A cylindrical shell and A screw conveyor for transporting soil, sand and stone in the shell, The main axis and a screw conveyor having a screw-type blade spirally provided on the main shaft; A nozzle for spraying or dispersing a chemical, vapor or fumigant into the shell; a plate that rotates together with the screw conveyor and lifts and breaks up the soil and stones, thereby bringing harmful organisms mixed in the soil and stones into contact with the chemical, steam or fumigant supplied from the nozzle; The plate is The first step is to lift the soil and stones. a second surface opposite the first surface, A large-volume soil-killing device for killing insects, characterized in that a rib is provided on the second surface to connect the second surface to the main shaft.

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