JP4897740B2 - Soil disinfection equipment - Google Patents

Description

  The present invention relates to a soil disinfecting apparatus for disinfecting soil by spraying a disinfecting solution into the soil.

  A gasified methyl bromide was used as a soil disinfectant for disinfecting soils in fields, etc., and eliminating pathogens and pests in the soil. However, because this methyl bromide is a substance that destroys the ozone layer and has been designated as a regulated subject by the Ozone Layer Protection Act, it has a relatively high medicinal effect as an alternative in recent years, and gas escape from the soil is also relatively low. Early chlorpicrin is used.

  Since chloropicrin has a relatively strong irritating odor and the stock solution is also relatively expensive, a soil disinfecting device having a diaphragm pump and a liquid injection claw for injecting the chloropicrin delivered by the diaphragm pump into the soil is used, and chlorpicrin is used. The soil is disinfected by intermittently injecting the agent into the soil (see, for example, Patent Document 1).

  However, the use of a chloropicrin agent having a relatively strong irritating odor is unfavorable for the health of the worker, and the stock solution of the chloropicrin agent is also relatively expensive. The soil disinfectant solution of carbum sodium salt solution is continuously injected into the soil with a relatively weak irritating odor, a relatively inexpensive stock solution, and a safe (human animal toxicity is normal, fish toxicity is Class A) Therefore, soil disinfection devices that disinfect the soil have been developed.

  This soil disinfecting device includes a disinfecting liquid tank mounted on a machine body towed by a walking tractor, a pump for sending the disinfecting liquid in the used poisoning liquid tank, a pushing body whose lower end is pushed into the soil, A nozzle holding pipe that is fixed to one side of the pushing body by welding and has a bottomed cylindrical shape, and a disinfecting solution that is opened laterally on one side of the lower end of the nozzle holding pipe and is supplied from the pump to the nozzle holding pipe. The nozzle which sprays in a horizontal direction in soil, and the adjustment member which adjusts the flow volume of the disinfection liquid supplied to this nozzle are provided.

The soil disinfecting apparatus configured as described above is towed by a walking tractor while the pusher and the nozzle portion are pushed into the soil, and soil disinfection is performed by being continuously injected from the nozzle into the soil. . Note that the walking tractor has a hitch on the handle side gripped by an operator, and a soil disinfecting device is connected to the hitch, so that the soil disinfecting device is arranged on the front side of the operator holding the handle. The pusher is disposed on the front side of the nozzle holding tube, and the disinfectant supplied to the nozzle holding tube is ejected rearward from the nozzle. Moreover, the pushing body prevents the nozzle from being damaged when pushed into the soil and when towing in the pushed state.
JP 2003-75462 A

  However, the soil disinfecting device nozzle that disinfects the soil by continuously injecting the soil disinfecting solution into the soil is opened laterally on one side of the lower end of the nozzle holding tube, and the disinfecting solution supplied into the nozzle holding tube Is sprayed from the nozzle to the rear (operator side), so that when the soil disinfection device is lifted to swivel in the field during the disinfection operation, the disinfectant continuously sprayed from the nozzle is There is a problem that it is sprayed on the legs of the person, which is unfavorable for health. In addition, since the adjustment member that adjusts the flow rate of the disinfectant supplied to the nozzle is provided in the nozzle holding tube, the pressing body and the nozzle are worn by repeated pressing into the soil, and the pressing body and the nozzle are replaced. In this case, the adjustment member is also replaced, and the replacement cost is increased. In addition, since the adjustment member is provided in the nozzle holding tube, there is a problem in that the pushing body becomes wide, and the progression resistance due to the pushing body when proceeding in the injection state increases.

  The present invention has been made in view of such circumstances, and a main object thereof is to provide a nozzle provided at the lower end of the tubular body attached to the side portion of the pushing body as an end surface that is not perpendicular to the axial center of the tubular body. When the soil disinfecting device is lifted to swivel in the field during the disinfection operation, the disinfecting liquid being continuously sprayed from the nozzle is applied to the operator's feet. An object of the present invention is to provide a soil disinfecting apparatus capable of preventing spraying and preventing clogging of a nozzle which is pushed into the soil together with the pushing body.

  Another object is to reduce the cost of the pusher including the nozzle by making the pipe attached to the side of the pusher into a round pipe and providing the nozzle integrally with the lower end of the round pipe. It is to provide an injection device.

  Another object of the present invention is to provide a disinfectant for supplying a nozzle to each of a plurality of supply pipes for supplying a disinfecting liquid sent out by a pump to each of the nozzles in a configuration in which a plurality of pushers and nozzles are arranged laterally apart. By providing the adjustment member which adjusts the flow volume of a liquid, while replacing | exchanging the cost of a pushing body and a nozzle, it is providing the soil disinfection apparatus which can reduce the progress resistance by the pushing body at the time of progressing in a pushing state.

The soil disinfecting apparatus according to the present invention has a columnar shape, and a tubular body is attached to the side of the pushing body whose lower end is pushed into the soil, and the disinfecting liquid in the disinfecting liquid tank is applied to the lower end of the tubular body. In the soil disinfecting apparatus provided with nozzles to be sprayed into the soil, the pusher and the nozzle are arranged at three points which are separated from each other in the lateral direction and which are apexes of a substantially triangle in plan view. Is an end surface that is not perpendicular to the axial center of the tubular body, and a sharp portion is arranged on the pusher side.

  In the first invention, since the disinfecting liquid is jetted downward from the nozzle, when the soil disinfecting device is lifted to turn in the field during the disinfecting work, the disinfecting liquid being continuously jetted from the nozzle The nozzle is an end surface that is not perpendicular to the axial center of the tube body, and the sharp part is arranged on the side of the pushing body, so when being pushed into the soil together with the pushing body, the nozzle The indentation resistance can be reduced, the soil in contact with the end face of the nozzle can be easily pushed along the end face, and the soil can hardly enter the nozzle. Therefore, clogging of the nozzle can be prevented, and the work efficiency of liquid injection into the soil can be increased.

  According to the first invention, since the disinfecting liquid is jetted downward from the nozzle, when the soil disinfecting device is lifted to turn in the field during the disinfecting work, the disinfecting liquid being continuously jetted from the nozzle is applied to the operator's foot. The nozzle can be prevented from being sprayed, and the nozzle is an end surface that is not perpendicular to the axial center of the tube, and the sharp part is arranged on the side of the pusher, so the nozzle when pushed into the soil together with the pusher The indentation resistance can be reduced, the soil in contact with the end face of the nozzle can be easily pushed along the end face, and the soil can hardly enter the nozzle. Therefore, clogging of the nozzle can be prevented, and the work efficiency of liquid injection into the soil can be increased.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a side view showing the configuration of a soil disinfection device according to the present invention, FIG. 2 is a schematic diagram showing the configuration of a soil disinfection device, FIG. 3 is an enlarged cross-sectional view showing the configuration of a pusher and a nozzle, and FIG. It is an expanded sectional view which shows the structure.

  This soil disinfecting apparatus includes a disinfecting liquid tank 2 mounted on the airframe 1 pulled by a walking tractor, a pump 3 for sending out disinfecting liquid in the disinfecting liquid tank 2, a battery 4 for driving the pump 3, A plurality of pushing bodies 5 that are arranged laterally apart from the machine body 1 and whose lower ends are injected into the soil, a plurality of pipe bodies 10 that are fixed to one side of the pushing body 5 by welding, A nozzle 6 provided at the lower end of the tube body 10, a plurality of supply pipes 7 for supplying the disinfecting liquid sent out by the pump 3 to the tube body 10 and the nozzle 6, and a pipe body arranged in the middle of the supply pipe 7. 10 and an adjustment member 8 that adjusts the flow rate of the disinfectant supplied to the nozzle 6, and a pressure reducing roller 9 that reduces the soil cultivated by the pusher 5.

  The disinfectant tank 2 has an inlet / outlet on the top ceiling wall and has a sealed cylindrical shape with a lid that closes the inlet / outlet, and is developed as an alternative to methyl bromide. Contains a soil disinfectant composed of a salt solution, specifically a stock solution of Kilper (registered trademark). This soil disinfectant contains sodium = methyldithiocarbamate as an active ingredient, its irritating odor is relatively weak, the stock solution is also relatively inexpensive, and human toxicity is normal and fish toxicity is class A Is expensive.

  The push-in body 5 is formed of a prismatic body having a parallelogram in cross section, the sharp corner is curved, and the tubular body 10 is attached to one side on the rear side in the traveling direction by welding. In addition, the pushers 5 are arranged at three locations that are the vertices of an isosceles triangle in plan view, and are configured to make the distance between the pushers 5 relatively long without increasing the distance in the horizontal direction. Moreover, the upper part of each pushing body 5 is pivotally supported by the machine body 1 by a horizontal axis, and can be turned to the upper non-pushing position. The supply of the disinfectant solution to the nozzle 6 attached by the nozzle 10 is stopped, and in the pushing position, the rotation in the opposite direction (rearward) to the aircraft moving direction is restricted. The posture at can be maintained.

  The tubular body 10 is a round pipe arranged in the vertical direction along one side of the pushing body 5, the nozzle 6 is integrally provided at the lower end of the round pipe, and the circumferential direction of the round pipe is one. The part is fixed to the pusher 5.

  The nozzle 6 has an end surface 6a that is not perpendicular to the axial center of the tube body 10, a hole 6b is disposed at the center of the end surface 6a, and a pointed portion 6c is disposed on the pusher 5 side. It is comprised so that it may inject to. In other words, the lower end of the round pipe is an end surface 6a that is cut non-perpendicularly with respect to the axial center, and the sharp portion 6c of the end surface 6a is disposed on the pusher 5 side.

  The supply pipe 7 is made of a flexible hose and is bent when the pusher 5 is rotated. The supply pipe 7 is branched into three from the middle, and an adjusting member 8 and a check valve 11 are connected to the branched supply pipe 7. A safety valve 12 and an air vent valve 13 for automatically venting air from the supply pipe 7 when the pump is started are connected to the pump 3 side of the supply pipe 7.

  The adjusting member 8 includes an orifice plate 81 having a through hole 81a having a smaller diameter than the inner diameter of the supply pipe 7, and holding pipes 82 and 83 for holding the orifice plate 81. The holding pipes 82 and 83 are the supply pipes. 7, and the flow rate is adjusted by the orifice plate 81.

  The soil disinfecting device configured as described above is connected to a hitch of a walking tractor, for example. The walk-type tractor consists of an airframe supported by two left and right traveling wheels, an engine mounted on the airframe, a handle that extends rearward from the airframe and is gripped by an operator with both hands, and a rear part of the airframe. The connecting portion of the fuselage 1 is connected to the hitch.

  In the soil disinfection work in the field, a downward pressing force is applied to the body 1 of the soil disinfection device by pushing down the handle held by the operator, and the pusher 5 and the nozzle 6 are shown in FIG. Can be pushed into the soil. At this time, the nozzle 6 provided at the lower end of the tubular body 10 becomes an end surface 6a that is not perpendicular to the axial center of the tubular body 10, and the sharp portion 6c is arranged on the pushing body 5 side. The resistance can be reduced, the soil abutting against the end surface 6a of the nozzle 6 can be easily pushed along the end surface 6a, the soil can hardly enter the nozzle 6, and clogging of the nozzle 6 can be prevented.

  The soil disinfecting device in which the pushing body 5 and the nozzle 6 are pushed is pulled and advanced by the walking tractor, and the disinfecting liquid in the disinfecting liquid tank 2 sent out from the pump 3 is adjusted in flow rate by the adjusting member 8 and in the soil. Can be sprayed downward from the hole 6b of the nozzle 6 to disinfect the soil. At this time, the soil is cultivated in a streak shape by the pushing body 5 and the nozzle 6 is arranged in a space generated immediately after the pushing body 5 in the cultivated soil. can do.

  FIG. 5 is an explanatory view showing a state in which the pusher 5 and the nozzle 6 are drawn upward from the soil surface. When turning on the farm field, the operator raises the handle of the walking tractor to apply an upward pulling force to the body 1 of the soil disinfection device, so that the pusher 5 and the nozzle 6 are moved above the soil surface. It can be pulled out and is turned by the walking tractor in this pulled out state. At this time, the nozzle 6 provided at the lower end of the tube body 10 becomes an end surface 6a that is not perpendicular to the axial center of the tube body 10, and the sharpened portion 6c is disposed on the pusher body 5 side, and sprays downward from the hole 6b. Therefore, it is possible to prevent the disinfecting liquid during continuous jetting from being sprayed on the operator's feet.

  After turning, the pusher 5 and the nozzle 6 can be pushed into the soil as shown in FIG. 1 by pushing down the handle held by the operator. At this time, the nozzle 6 provided at the lower end of the tube body 10 becomes an end surface 6a that is not perpendicular to the axial center of the tube body 10, and the sharpened portion 6c is disposed on the pusher body 5 side. The soil can hardly enter the nozzle 6 and the nozzle 6 can be prevented from being clogged.

  In soil disinfection work in the field, when the root of the crop of the previous crop is strong and the three pushers 5 have a large resistance to progress, for example, the pusher 5 arranged in the middle is rotated upward together with the nozzle 6. Although the disinfecting liquid is not supplied to the middle nozzle 6, the flow rate of the remaining two nozzles 6 is adjusted by the adjusting member 8, so that the disinfecting liquid having a constant flow rate can be ejected.

  In the embodiment described above, the tubular body 10 is fixed to the push-in body 5 by welding. However, the tubular body 10 may be fixed by a band member having a substantially Ω shape, etc. The means is not particularly limited.

  In the embodiment described above, the soil disinfection device is described as being pulled by a walking tractor. However, the soil disinfection device according to the present invention may be mounted on a riding tractor, and It is good also as a structure incorporated in the self-propelled working machine.

It is a side view which shows the structure of the soil disinfection apparatus which concerns on this invention. It is a schematic diagram which shows the structure of the soil disinfection apparatus which concerns on this invention. It is an expanded sectional view showing composition of a pushing body and a nozzle of a soil disinfection device concerning the present invention. It is an expanded sectional view which shows the structure of the adjustment member of the soil disinfection apparatus which concerns on this invention. It is explanatory drawing which shows the state by which the pushing body and nozzle of the soil disinfection apparatus which concern on this invention were pulled out upwards from the soil surface.

Explanation of symbols

2 Disinfectant tank 3 Pump 5 Pusher 6 Nozzle 6a End face 6c Sharp part 7 Supply pipe 8 Adjustment member

Claims (1)

A pipe is attached to the side of the pusher that has a pillar shape and the lower end is pushed into the soil, and a nozzle to spray the disinfectant solution in the disinfectant tank into the soil is provided at the lower end of the tube. In the soil disinfecting apparatus, the pusher and the nozzle are arranged at three points which are separated from each other in a lateral direction and are apexes of a substantially triangle in a plan view, and the nozzle has an axial center of the pipe body. A soil disinfection device characterized in that it is a non-perpendicular end face and a sharp portion is arranged on the pusher side.

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