JPH0219036Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a soil in which a piston rod is housed in a cylinder that can penetrate a chemical tank so that it can be raised and lowered, and the piston rod is pressed and lowered by an operating rod. The present invention relates to a discharge device for a soil disinfection machine which quickly and reliably sterilizes and kills insects in deep and shallow parts of the soil over the entire surface of cultivated soil by providing a plurality of discharge holes below the cylinder in the disinfection machine, and which has a simple structure. It is something.

[Prior Art] A soil disinfection machine that discharges a chemical solution from a discharge hole set below a piston rod that can be lowered by pressing an operating rod when sterilizing or killing insects in soil is, for example, as shown in Figure 4. , an operation in which a handle 3 is attached perpendicularly to the upper end of a long cylinder 2 that penetrates and is fixed to the top and bottom of the chemical solution tank 1, and the tip is pivoted to a support shaft 4 implanted on one side of the handle 3. The piston rod 6 moving up and down inside the cylinder 2 is brought into contact with the upper end of the integral covering piece 7, while the piston rod 6
A piston packing 8 attached to the lower end is slidably fitted to the inner peripheral wall of the cylinder 2, and a ball-shaped discharge valve 10 is installed halfway inside the connecting piece 9 fixed to the lower end of the cylinder 2. A nozzle pipe 11 which is always elastically propelled and urged upward by a projectile body such as the above, and whose upper end is fixed to this connecting piece 9.
A nozzle 14 having a discharge hole 12 (usually four radially arranged) and a check valve 13 is fixed to the lower end of the piston rod 6. The piston seal 8 slides into the cylinder 2 and descends, and the pressure of the chemical liquid pushes the discharge valve 10 against the elastic force of the elastic body.
After being released, the chemical liquid further descends in the nozzle pipe 11 and releases the check valve 13, and then is discharged from the discharge hole 12 toward the soil, thereby sterilizing and killing insects.

However, when it comes to soil disinfection machines of this type,
One lower end of one nozzle pipe 1 (discharge hole is 4
However, for crops that require disinfection deep into the soil, the nozzle pipe 11 must be inserted deep into the soil to discharge the chemical solution. In the case of crops where disinfection is not sufficient, or where disinfection is sufficient in shallow areas, the chemical solution will only be discharged near the ground surface and disinfection below that cannot be performed, so the nozzle pipe 11 should be placed near the ground surface. It is necessary to gradually insert the chemical to a deeper position, but in such a case, the amount of discharged chemical solution increases, resulting in gas spouting and scattering on the ground surface, causing workers to inhale the gas and causing unexpected disasters. In addition, there is a risk of phytotoxicity occurring on the ground surface of crops, and it is hard to avoid feeling that the disinfection work is inefficient.

Therefore, in order to kill and sterilize insects by uniformly spraying a chemical solution over a wide area in the soil, injection holes are provided at appropriate intervals along the longitudinal direction of the long rod, and the chemical solution is sprayed from each injection hole. A soil disinfection machine has been proposed. (For example, as an example,
(Refer to Publication No. 40-21803) [Problems to be solved by the invention] The soil disinfection machine described in the above-mentioned publication is capable of uniformly dispersing chemical solution over a wide area; As the number of dispensing tubes increases and the diameter of the rods increases, pushing them into the soil requires a lot of effort and creates large holes in the soil, making it difficult to kill insects and sterilize by spraying chemical solutions. In addition, since the rod is formed from a single pipe, the position of the injection hole cannot be adjusted freely, so the chemical solution is constantly in the soil.
If it is sprayed at regular intervals, there is a tendency for the chemical solution to be dispersed locally, and to avoid this, the rod itself has to move up and down, which is unnecessary. The disadvantage is that it requires a lot of effort. This idea was proposed with a focus on the problems mentioned above, and its purpose is to
It is an object of the present invention to provide a discharge device for a soil disinfection machine that can quickly and reliably sterilize and kill insects over the entire surface of desired cultivated soil, thereby increasing the efficiency of soil disinfection and improving the disinfection effect.

[Means to solve the problem]

In order to achieve the above-mentioned object, the discharge device of the soil disinfection machine in this invention houses a piston rod movably up and down in a cylinder that can penetrate the chemical solution tank, and when the piston rod is pressed and lowered by the operation rod, the cylinder In a soil disinfection machine equipped with a nozzle pipe connected to a lower end and having a plurality of discharge holes formed in the vertical direction, a lower part of a first nozzle pipe connected to the lower end of the cylinder and a space communicating with the first nozzle pipe. While connecting the first discharge hole radially with the upper part of the nipple, which is parallel to the empty space and has side passage holes penetrating vertically, upper connecting fittings are screwed and covered respectively, and the lower part of the nipple and the upper part of the nipple are screwed and covered. A lower connecting fitting is screwed onto and covered with the upper part of the second nozzle pipe, which has a second discharge hole radially provided at the lower end, and the first nozzle pipe and the second nozzle pipe are connected through the side passage hole. It is made by communicating with each other.

〔Example〕

An embodiment of this invention will be described with reference to FIGS. 1, 2, and 3. A handle 21 is attached perpendicularly to the upper end of a long cylinder C that is penetrated and fixed along the top and bottom of the chemical tank T. The intermediate lower edge of the operating rod 22, the tip of which is pivoted to a support shaft a implanted near one end (the left end in FIG. 1) of the handle 21, is covered integrally with the piston rod 23 that moves up and down within the cylinder C. The piston packing P attached to the lower end of the piston rod 23 is brought into contact with the upper end of the piece 24, while the piston packing P is attached to the cylinder C.
A ball-shaped discharge valve 26 is connected to a coil-shaped discharge valve 26 in a first nozzle pipe 28, which is slidably fitted into the inner peripheral wall of the cylinder C, and whose upper end is screwed onto the inside part of the connecting piece 25 fixed to the lower end of the cylinder C. A holding piece that is always resiliently biased in a closed state by a spring 27 to prevent the chemical solution d from falling unexpectedly, and further has a depth confirmation plate 29 attached to the outer periphery of the first nozzle pipe 28. k is fixed with a fixing device j such as a set screw, so that the insertion depth of the second nozzle N ₂ from the ground surface f, which will be described later, can be confirmed. Further, a nipple 30 is fitted and fixed approximately in the center of the upper connecting fitting _b1 screwed and fixed to the lower end of the first nozzle pipe 28.
A ball-shaped check valve v ₁ is always urged and biased upward by a coiled spring s ₁ in a space g in the inner space, while a first discharge hole e ₁ that communicates with this space g is set. Several (four in this case) are set radially, and a side passage hole h is bored in the vertical direction between these first discharge holes _e1 , and communicates with the upper end of a second nozzle pipe 31, which will be described later. I've let it happen. (See Figures 2 and 3) The first nozzle includes the upper connecting fitting b ₁ , the nipple 30, the check valve v ₁ , the spring s ₁ , the first discharge hole e ₁ , and the side passage hole h.
It is called _N1 .

Lower connection fitting b ₂ screwed onto the nipple 30
A second nozzle N2 having a conical cross section is attached to the lower end of the second nozzle pipe 31 whose upper part is screwed and fitted into the lower _end of the pipe, and a ball-shaped check valve v is installed in the space i in the second nozzle _N2 . ₂ is always urged and biased in a closed state by a coiled spring s ₂ , while an appropriate number (four in this case) of second discharge holes e ₂ are set radially to communicate with the cavity i. There is. In addition, a capacity scale m is provided vertically on the outer surface of the chemical solution tank T, which can be used to check the capacity of the chemical solution d, while an injection adjustment knob 32 is attached to the other end of the handle 21 (the right end in FIG. 1). There is. Therefore, the first nozzle pipe 28 and the second nozzle pipe 31 are collectively referred to as a nozzle pipe Q. 3 in the diagram
3 is a chemical solution inlet.

[Effect]

In this invention, after fixing the depth confirmation plate 29 at a desired position of the first nozzle pipe 28 according to the sterilization area in the soil, grasp the handle 21 and insert the lower end of the second nozzle _N2 into the soil to the specified depth. When the confirmation plate 29 contacts the ground surface f, when the operating rod 22 is pressed downward with the support shaft a as a fulcrum, the piston packing P slides against the inner circumferential wall of the cylinder C as the piston rod 23 descends via the covering piece 24. As the chemical solution d descends while contacting the pipe, the chemical solution d is pressed downward and presses and releases the discharge valve 26 against the elastic force of the spring 27, so it falls and flows into the first nozzle pipe 28, and then the connection at the upper part. Metal fittings
After the flow into b ₁ , the check valve v ₁ in the nipple 30 is closed by the spring.
It is pressed and released against the elastic force of s ₁ , flows into the cavity g, and is ejected from the four first discharge holes e ₁ toward the surroundings of the soil, sterilizing the soil near the nipple 30. ,
Kill insects. On the other hand, the chemical solution d that has passed through the side hole h of the nipple 30 falls inside the second nozzle pipe 31, and presses and releases the check valve _v2 in the second nozzle _N2 against the elastic force of the spring _s2 . Then, it is ejected from the second discharge hole e ₂ to the surrounding area of the soil, and sterilizes near the second nozzle N ₂ .
Kill insects. The chemical solution d is sprayed onto the soil from the first nozzle N ₁ and the second nozzle N ₂ respectively set at the upper and lower ends of the second nozzle pipe 31 inserted into the soil, thereby disinfecting the soil.

〔effect〕

According to this invention, the first and second nozzle pipes are connected to the middle and lower ends of the nozzle pipe, respectively, which are communicated with the lower end of the cylinder and are vertically connected through the upper and lower connecting fittings and nipples with side passage holes. Since the second discharge hole is provided, the disinfection range can be expanded compared to the conventional method in which the chemical solution was ejected only from the lower end of the nozzle pipe, and the disinfection range can be expanded to cover the entire surface of the desired cultivated soil. In addition, by connecting the desired number of nozzle pipes vertically through the connecting fittings and nipples, it is possible to set any number of discharge holes, allowing immediate disinfection of the disinfection area in a short time. , and can be carried out reliably,
Since the connecting fitting and nipple are simply attached to the middle of the conventional nozzle pipe, the overall structure does not become significantly complicated or the operation becomes complicated, so it can be manufactured robustly and inexpensively. It is expected that the efficiency of disinfection work and the disinfection effect will be significantly improved.

The above is an explanation of an embodiment in which discharge holes are set in each of the first and second nozzles, but the desired discharge can be achieved by interposing a connecting fitting or a nipple in the middle of the nozzle pipe in the vertical direction. You can set holes.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway vertical cross-sectional view of the essential parts of an embodiment of a soil disinfection machine equipped with this product, Figure 2 is an enlarged view of the part in Figure 1, and Figure 3 is a cross-sectional view taken along the - line in Figure 2. FIG. 4 is a vertical cross-sectional view of the main part of a conventional soil disinfection machine, with a portion cut away. C... Cylinder, Q... Nozzle pipe, T... Chemical tank, b ₁ ... Upper connection fitting, b ₂ ... Lower connection fitting,
e ₁ ...first discharge hole, _e2 ...second discharge hole, g...vacancy, h
... Side passage hole, 22... Operation stick, 23... Piston stick, 2
8...First nozzle pipe, 30...Nipple, 31...
Second nozzle pipe.

Claims (1)

[Scope of utility model registration request] A soil disinfection system that houses a piston rod that can be raised and lowered in a cylinder that can penetrate through a chemical tank, and that is moved up and down by the pressure of an operating rod.It is connected to the lower end of this cylinder and is equipped with a nozzle pipe that has multiple discharge holes formed in the vertical direction. In the machine, the first discharge hole e1 is radially communicated with the lower part of the first nozzle pipe 28 communicating with the lower end of the cylinder c and the cavity g communicating with the first nozzle pipe 28, while the first discharge hole _e1 is connected in parallel with the cavity g. and screwing and covering the upper connecting fittings _b1 to the upper part of the nipple 30, which is provided with a side passage hole h passing through the upper and lower parts,
A lower connecting fitting _b2 is screwed onto and covered with the lower part of the nipple 30 and the upper part of the second nozzle pipe 31 having the second discharge hole _e2 provided radially on the lower side.
A discharge device for a soil disinfection machine, in which a first nozzle pipe 28 and a second nozzle pipe 30 are communicated with each other via the side passage hole h.