JP4879651B2 - Soil disinfection equipment - Google Patents

Description

  The present invention relates to a soil disinfecting apparatus for disinfecting soil by pumping disinfecting liquid in a disinfecting liquid tank and spraying the disinfecting liquid on the soil from a spraying unit.

  A soil disinfection device that disinfects soil in fields, etc., and eliminates pathogens and pests in the soil is a point injection type that intermittently injects a disinfectant solution into the soil, and a continuous injection of disinfectant solution into the soil. There are known an injection type and an admixing type in which an antiseptic solution is mixed into the soil by an admixing rotary after spraying the antiseptic solution on the soil surface.

  As a spot-type soil disinfecting device, a plurality of disinfecting liquid tanks containing disinfecting liquids, a liquid outflow confirmation meter connected to each of the disinfecting liquid tanks, and an inlet for each of the liquid outflow confirmation meters Two pumps connected to each other and a plurality of liquid injection claws connected to the discharge passage of the pump are mounted on the tow truck, and the tractor pulls the tow truck. Check whether the disinfecting liquid remains in the disinfecting liquid tank by visually checking the liquid outflow confirmation meter connected to each tank and confirming that the disinfecting liquid in the disinfecting liquid tank has flowed out. This can be done (see, for example, Patent Document 1).

In addition to the disinfectant tank and pump, the continuous injection type soil disinfecting apparatus includes a guide claw that has its tip pierced into the soil, and a nozzle disposed along the guide claw.
In addition, the mixing type soil disinfecting apparatus includes a nozzle and a mixing rotary for spraying the disinfecting liquid on the soil surface in addition to the disinfecting liquid tank and the pump.

  In addition, a dilution type in which the soil disinfectant is diluted with water and sprayed, and a stock solution type in which the stock solution is sprayed without dilution are known. The stock solution type soil disinfectant is contained in a relatively small liquid tank.

Moreover, when the remaining amount of the disinfecting liquid in the disinfecting liquid tank connected to the pump is reduced, the soil disinfecting work can be continued by replacing it with the auxiliary disinfecting liquid tank. A soil disinfecting device configured as described above is also known.
JP 2001-161247 A

  However, since the conventional soil disinfecting apparatus is provided with a pump corresponding to one disinfecting liquid tank as described in Patent Document 1, a relatively large disinfecting is required to lengthen the continuous disinfecting operation time. There is a problem that it is necessary to mount a liquid tank, the transportation and mounting workability of the disinfecting liquid tank is poor, and the entire soil disinfecting apparatus becomes large.

  In addition, if a configuration with a relatively small disinfectant tank is installed in consideration of this problem, the time for continuous disinfection is shortened and the disinfectant tank needs to be replaced in a relatively short time. There is a problem that the nature is bad.

  In addition, in a soil disinfection device that can be replaced with a spare disinfectant tank so that the disinfection work can be continued, it is difficult to know when to replace the spare disinfectant tank, so the replacement is too early. In addition, since outside air enters the suction pipe connected to the pump suction port during replacement, extra air venting work is required, and the number of air venting operations per unit spraying time is large. There was a problem that disinfection workability was bad.

  The present invention has been made in view of the circumstances as described above, and a main object thereof is a first suction pipe having one end connected to a suction port of a pump and the other end opened to a lower portion in the disinfectant tank, and one end. Is provided with a second suction pipe to be opened in the upper part of the disinfectant tank, so that the continuous spraying operation time can be increased by using a relatively small disinfectant tank, and the unit spraying time An object of the present invention is to provide a soil disinfecting apparatus that can reduce the number of times of air venting per hit.

  Another purpose is to provide a tube holder fitted with an inlet / outlet opened in the upper part of the disinfectant tank and having two through-holes. An object of the present invention is to provide a soil disinfecting apparatus that can remove a lid attached and fit a pipe holder to the inlet / outlet to easily attach the first suction pipe and the second suction pipe.

A soil disinfecting apparatus according to a first aspect of the present invention includes a disinfecting liquid tank that contains a disinfecting liquid, a pump that sucks and discharges the disinfecting liquid in the disinfecting liquid tank, and a spraying unit that disperses the disinfecting liquid discharged from the pump. in the soil disinfecting device comprising bets one end connected to the suction port of the pump, a first suction line and the other end should open in the lower portion of the disinfectant solution tank, one end opening at the top of the disinfectant solution tank And the other end is provided with the 2nd suction pipe which should open to the lower part in the disinfection liquid tank separate from the said disinfection liquid tank .

  In the first invention, the first disinfecting liquid tank in which the other end of the first suction pipe and the one end of the second suction pipe are opened inside, and the second end in which the other end of the second suction pipe is opened inside. When the pump is driven using the disinfectant tank, the disinfectant liquid in the first disinfectant tank is sucked into the pump through the first suction pipe, and the upper part in the first disinfectant tank is negative pressure. By this negative pressure, the disinfecting liquid in the second disinfecting liquid tank flows into the first disinfecting liquid tank through the second suction pipe, and the disinfecting liquid in the second disinfecting liquid tank disappears with time. Subsequently, the disinfecting liquid in the first disinfecting liquid tank is sucked into the pump through the first suction pipe. Therefore, the soil disinfection can be continuously performed until the disinfecting liquid in the first and second disinfecting liquid tanks is exhausted, and the continuous disinfecting operation time can be extended by the relatively small disinfecting liquid tank. Further, during the continuous disinfection operation time, no operation and no control can be performed, so that disinfection workability can be improved. Further, since the disinfecting liquid in the plurality of disinfecting liquid tanks can be sprayed without exchanging the disinfecting liquid tank, the number of air venting operations per unit spraying time can be reduced.

  The soil disinfecting apparatus according to a second aspect of the present invention is characterized in that the disinfecting liquid tank has an inlet / outlet at an upper portion thereof, and includes a pipe holder fitted into the inlet / outlet and having two through holes. To do.

  In the second invention, the pipe holder can be fitted to the inlet / outlet by removing the lid attached to the inlet / outlet of the commercially available disinfectant tank. The first suction pipe can be inserted into the through hole, and the second suction pipe can be inserted into the other through hole.

  According to the first invention, the other end of the first suction pipe and one end of the second suction pipe are opened inside, and the other end of the second suction pipe is opened inside. When the pump is driven using the disinfectant tank, the disinfectant in the first disinfectant tank is sucked into the pump through the first suction pipe, and the upper part in the first disinfectant tank becomes negative pressure. By this negative pressure, the disinfecting liquid in the second disinfecting liquid tank flows into the first disinfecting liquid tank through the second suction pipe, and the disinfecting liquid in the second disinfecting liquid tank disappears with time, Subsequently, the disinfectant in the first disinfectant tank is sucked into the pump. Therefore, the soil disinfection can be continuously performed until the disinfecting liquid in the first and second disinfecting liquid tanks is exhausted, and the continuous spraying operation time can be extended by the relatively small disinfecting liquid tank. Moreover, since it can be made non-operation and non-control during the continuous spraying work time, soil disinfection workability can be improved. In addition, since the disinfecting liquid in the plurality of disinfecting liquid tanks can be sprayed without exchanging the disinfecting liquid tank, the number of air venting operations per unit time can be reduced.

  According to the second aspect of the present invention, the pipe holder can be fitted to the inlet / outlet by removing the lid attached to the inlet / outlet of the commercially available disinfectant tank, and one of the pipe holders is penetrated. The first suction pipe can be inserted into the hole, and the second suction pipe can be inserted into the other through hole.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a schematic front view showing a configuration of a soil disinfecting apparatus according to the present invention, and FIG. 2 is a simplified diagram showing a configuration of a main part.

  This soil disinfecting apparatus has a driver's seat 1a and is supported by front and rear wheels 1b and 1c, and first and second disinfecting liquid tanks 2 and 2a mounted on the front of the body 1. A support base 3 mounted on the rear part of the machine body 1, a pump 5 mounted on the support base 3 and sucking the disinfectant liquid in the first disinfectant liquid tank 2 through the first suction pipe 4, and the pump 5 is provided with a plurality of spraying units 7 (nozzles) that are connected to a discharge path 5 by a liquid feeding pipe 6 and spray a disinfectant liquid on soil such as a farm field. Further, the support 3 is cultivated on the soil sprayed with the disinfecting liquid from the spraying section 7 and mixed with the mixing rotary 8 for mixing the disinfecting liquid into the soil, and the height of the mixing soil section mixed with the mixing rotary 8. A pair of left and right gauge rings 9, 9 that support the support base 3, a multi-sheet roll 10 that covers the cultivated soil portion between the gauge rings 9, 9, and both sides in the width direction of the multi-sheet drawn from the roll 10 A pair of left and right sheet presser wheels 11, 11 that hold the part, and a pair of left and right earthen ring wheels 12, 12 that lie down on both sides of the multi-sheet pressed by the sheet presser wheels 11, 11 in this order. They are arranged sequentially from the front in the direction of travel.

  The first and second disinfectant tanks 2 and 2a have entrances and exits 2b and 2b on the top wall of the upper part, and have a sealed cylindrical shape with a lid that closes the entrances and exits 2b and 2b. Contains a stock solution of soil disinfectant consisting of carbam sodium salt developed as an alternative to methyl bromide. And it arrange | positions at the left-right direction both sides of the body 1. As shown in FIG. Moreover, when connecting to the suction port of the pump 5, the said cover body is removed and the tube holders 13 and 13 are fitted by each of the entrance / exit 2b, 2b. In addition, there are air reservoirs a and a in the upper portions of the first and second disinfectant tanks 2 and 2a.

  The tube holder 13 is formed in a truncated cone shape from a flexible material such as rubber or synthetic resin, and has first and second through holes 13a and 13b penetrating at both ends. The small diameter side of the tube holder 13 is fitted into the inlet / outlet 2b, 2b, and the first and second through holes 13a, 13b are opened up and down.

  In the tube holder 13 of the first disinfectant tank 2, the first suction pipe 4 is inserted through the first through hole 13a, and the second suction pipe 14 is inserted through the second through hole 13b. The pipe holder 13 of the second disinfectant tank 2a has an intake pipe 15 through which the other end of the second suction pipe 14 is inserted into the first through hole 13a and the second through hole 13b is opened to the atmosphere. Is inserted.

  The 1st suction pipe 4 and the 2nd suction pipe 14 consist of rubber hoses, a metal pipe, etc. One end of the first suction pipe 4 is connected to the suction port of the pump 5, and the other end opens to the lower part in the first disinfectant tank 2. One end of the second suction pipe 14 opens to the upper air reservoir a in the first disinfectant tank 2, and the other end opens to the lower part of the second disinfectant tank 2a.

  A plurality of spraying sections 7 are arranged in front of the mixing rotary 8 in the traveling direction of the machine body 1 and spaced apart in the left-right direction of the machine body 1.

  In addition, an engine for driving the rear wheels 1c, 1c is mounted on the airframe 1, and the pump 5 and the mixing rotary 8 are interlocked and connected to the output shaft of the engine via a clutch.

  The soil disinfecting apparatus configured as described above is equipped with relatively small commercial disinfecting liquid tanks 2 and 2a in which 20 liters of undiluted liquid is accommodated on both sides in the left-right direction at the front of the body 1. Since the commercially available disinfectant tanks 2 and 2a have lids attached to the inlet / outlet 2b and have a sealed structure, the lid is removed and the tube holder 13 is fitted into the inlet / outlet 2b in place of the lid. To wear. And the other end side of the 1st suction pipe 4 is inserted in the 1st through-hole 13a of the pipe holder 13 of the 1st disinfection liquid tank 2, and the one end side of the 2nd suction pipe 14 is inserted in the 2nd through-hole 13b. Is inserted. Further, the other end side of the second suction pipe 14 is inserted into the first through hole 13a of the pipe holder 13 of the second disinfectant tank 2a, and the intake pipe 15 is inserted into the second through hole 13b.

  After this work preparation, the wheels 1b, 1b, the pump 5 and the mixing rotary 8 are driven by the engine, and an operator who has boarded the driver's seat 1a sprays the disinfectant liquid from the spraying unit 7 while traveling the airframe 1, thereby causing the soil. Perform disinfection work.

  FIG. 3 is an explanatory diagram showing a situation during soil disinfection work. As the pump 5 is driven, the disinfecting liquid in the first disinfecting liquid tank 2 is sucked into the pump 5 through the first suction pipe 4, and the upper air reservoir a in the first disinfecting liquid tank 2 becomes negative pressure. A differential pressure is generated between the first and second disinfecting liquid tanks 2 and 2 a, and the disinfecting liquid in the second disinfecting liquid tank 2 a passes through the second suction pipe 14 due to this differential pressure (suction action due to negative pressure). The first disinfectant tank 2 flows into the first disinfectant tank 2 and the disinfectant liquid in the second disinfectant tank 2a disappears with time (see FIG. 3), and then the disinfectant in the first disinfectant tank 2 is first. Soil disinfection can be carried out continuously until it is sucked into the pump 5 through the suction pipe 4 and the disinfecting liquid in the first disinfecting liquid tank 2 runs out. Since the soil disinfection can be performed continuously until the disinfecting liquid in the first and second disinfecting liquid tanks 2 and 2a runs out without exchanging the disinfecting liquid tanks 2 and 2a in the middle as described above, continuous disinfection is possible. The working time can be extended, and since the suction can be continuously performed between the first and second disinfectant tanks 2 and 2a without being interrupted, air is sucked into the pump 5 in the middle. Since there is no need to exchange the disinfectant tanks 2 and 2a between the two disinfectant tanks 2 and 2a, there is no need to pay attention to the time when the disinfectant tanks 2 and 2a are replaced. Workability can be improved.

  Moreover, the time for which the disinfectant solution in one disinfectant tank is consumed, that is, the spraying operation time, can be roughly estimated from the spraying amount sprayed per unit time from the spraying unit 7 and the traveling speed of the aircraft. Therefore, when disinfecting liquid that exceeds the liquid capacity of the two disinfecting liquid tanks is continuously sprayed, air is supplied to the pump 5 when the dispersing work time in which the disinfecting liquid in the second disinfecting liquid tank 2a is consumed has elapsed. The second disinfectant tank 2a can be replaced without being sucked. When performing such a continuous spraying operation, the other end side of the spare second suction pipe 14 is inserted into the first through hole 13a of the spare pipe holder 13, and the spare intake pipe 15 is inserted into the second through hole 13b. One or a plurality of suction units through which are inserted are prepared. Then, when the disinfecting liquid in the second disinfecting liquid tank 2a is consumed, the second through hole 13b of the tube holder 13 fitted to the inlet / outlet 2b of the first disinfecting liquid tank 2 is used for the second operation. One end side of the suction pipe 14 is extracted, the second disinfecting liquid tank 2 is replaced with an unused disinfecting liquid tank together with the pipe holder 13 fitted to the inlet / outlet 2b of the second disinfecting liquid tank 2, A pipe holder 13 of the suction unit is fitted into the inlet / outlet 2b of the disinfectant tank, and one end side of the second suction pipe 14 of the suction unit is connected to the first of the pipe holder 13 of the first disinfectant tank 2. The second through hole 13b is inserted. At this time, one end of the second suction pipe 14 opens into the upper air reservoir a in the first disinfecting liquid tank 2, so that the second disinfecting liquid tank 2a does not suck air into the pump 5 as described above. Can be exchanged, and air venting is unnecessary. Further, if the second disinfectant tank 2a is replaced within a spraying operation time enough to run out of the disinfectant liquid in the second disinfectant tank 2a and start to consume the disinfectant liquid in the first disinfectant tank 2, The disinfecting liquid in the second disinfecting liquid tank 2a can be used up completely, and the waste of the disinfecting liquid can be minimized.

  In the embodiment described above, the first and second disinfectant tanks 2 and 2a are provided. However, the number of disinfectant tanks is not particularly limited. In this case, the second disinfecting liquid tank 2 a other than the first disinfecting liquid tank 2 is communicated with the second suction pipe 14. The intake pipe 15 is inserted and held in the second through hole 13b of the pipe holder 13 of the second disinfectant tank 2a. In addition, the intake pipe 15 is eliminated and the second through hole 13b is exposed to the atmosphere. It is good also as a structure open | released.

  The soil disinfecting apparatus according to the present invention may be a walking type in which an operator walks and performs work in addition to a traveling type in which an operator gets on and works. In the case of the walking type, a configuration including the mixing rotary 8, the gauge wheel 9, the roll 10, the sheet presser wheel 11, and the earthen wheel 12 may be adopted.

  Further, the soil disinfecting apparatus according to the present invention is a mixing type in which the disinfecting liquid is mixed with the soil by a mixing rotary after spraying the disinfecting liquid on the soil surface as shown in FIG. It may be a continuous injection type that injects into the soil, or a point injection type that intermittently injects a disinfectant solution into the soil, and the spraying form is not particularly limited.

  Further, the soil disinfecting apparatus according to the present invention has a configuration in which the disinfecting liquid tanks 2, 2 a and the pump 5 are separately mounted, and the disinfecting liquid tanks 2, 2 a and the pump 5 are mounted on the support base 3. It is good also as a structure mounted in a traveling type body or a walking type body. Further, the mixing rotary 8, the gauge wheel 9, the roll 10, the sheet presser wheel 11, and the earthen wheel 12 are not necessarily required.

It is a schematic front view which shows the structure of the soil disinfection apparatus which concerns on this invention. It is a simplification figure showing the composition of the principal part of the soil disinfection device concerning the present invention. It is explanatory drawing which shows the condition in the middle of the soil disinfection operation | work which concerns on this invention.

Explanation of symbols

2,2a Disinfectant tank 2b Inlet / outlet 4 First suction pipe 5 Pump 7 Spreading part 13 Tube holder 13a, 13b Through hole 14 Second suction pipe

Claims (2)

In a soil disinfecting apparatus comprising a disinfecting liquid tank that contains a disinfecting liquid, a pump that sucks and discharges the disinfecting liquid in the disinfecting liquid tank, and a spraying unit that disperses the disinfecting liquid discharged from the pump. is connected to the suction port of the pump, a first suction pipe to be opened in the lower portion of the other end the disinfectant solution tank, one end opening at the top of the disinfectant solution tank, said disinfectant tank and the other end And a second suction pipe to be opened at the lower part in a separate disinfectant tank .   The soil disinfecting apparatus according to claim 1, further comprising an inlet / outlet at an upper portion of the disinfecting liquid tank, and a pipe holder fitted into the inlet / outlet and having two through holes.

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