JP3197823U - Plant chemical injection device - Google Patents

Abstract

Disclosed is a plant chemical solution injection device capable of quantitatively injecting a chemical solution into the body of a plant and into the soil in which the plant grows. [MEANS FOR SOLVING PROBLEMS] A cylinder (2) including a nozzle connecting portion (2B) capable of containing a chemical solution (13) and discharging the chemical solution (13) at one end thereof, and one end surface thereof being located inside the cylinder (2) along the axial direction of the cylinder (2). And a grip member 3 that supports the other end of the cylinder 2 and a part of the piston 4 that protrudes to the outside of the cylinder 2. The cylinder 2 has a piston adjusting screw portion 2D capable of displacing the piston 4 in the axial direction in an initial state where no gripping force is applied to the grip member 3, and a gripping force applied to the grip member 3 from the initial state. And an injection amount display unit for displaying the amount of the chemical solution 13 discharged from the nozzle connecting portion 2B until the discharge state in which the piston 4 moves forward. [Selection] Figure 1

Description

  The present invention relates to a plant chemical solution injection device, and more particularly to a plant chemical solution injection device capable of quantitatively injecting a chemical solution into the body of a plant and into the soil in which the plant grows.

  In the field of agriculture and horticulture, spraying chemicals using a sprayer or a radio control helicopter is widely performed on plants and plant-growing soil for the purpose of supplying nutrients to plants and controlling pests. Yes. However, spraying chemicals may adversely affect human and livestock health. For example, there is a risk that an operator who sprays a chemical using a sprayer will accidentally suck a mist-like chemical. There is also a risk that chemical substances contained in the chemical solution will accumulate in crops, air, groundwater, rivers, soil, and the like. The chemical spraying operation needs to be carried out with great care so as to minimize these risks.

  In addition, it is known that there are pests that are difficult to control depending on the spraying of the chemical solution. Examples of pests that are difficult to control include pine wood nematode that kills pine, and rape fungus (Raffaelea quercivora) that kills oaks. Control of these pests is carried out by controlling the pine wood beetle, the host of the pinewood nematode, and the oak beetle, the host of the oak fungus, by chemical spraying. However, it is necessary to spray a high-concentration chemical solution in order to control the pine beetle beetle and the oak beetle. In farmland where residential areas exist in the vicinity, it is difficult to spray high-concentration chemicals from the viewpoint of preventing the occurrence of health damage to humans, and it is difficult to control pine wood nematode and oak fungus .

  In order to reduce adverse effects on humans, livestock, and the surrounding environment, a chemical solution injection method may be used instead of chemical solution spraying. As an example of the chemical solution injection method, there is a method in which a hole is formed on the outer surface of a plant body such as a tree using a drill or the like, a chemical solution injection nozzle is inserted into the hole, and the chemical solution is injected into the body of the plant. Another example of the chemical solution injection method is a method of digging a thin hole in the soil where the plant grows, inserting a chemical solution injection nozzle into the hole, and injecting the chemical solution into the soil.

  Patent document 1 is mentioned as a specific example of the prior art document described about the said chemical | medical solution injection | pouring method. Patent Document 1 states that “a cylinder portion, a thin tubular nozzle communicating with the cylinder portion, a piston that slides in the cylinder, a drain plug that can discharge residual liquid in the cylinder, and a stretchability. And a sealed chemical solution tank that is attached so that the sealed chemical solution tank communicates with the cylinder portion, and discloses a chemical solution injection device for a plant or plant surrounding soil (claim 1). 1).

  Further, Patent Document 1 states that “the stroke adjusting screw 20 is provided at the rear end portion of the gun-shaped main body 2 and when the stroke adjusting screw 20 is rotated, the protruding amount of the screw in the gun-shaped main body 2 changes. As described above, the adjusting screw 20 regulates the extension of the piston, and adjusting the stroke adjusting screw 20 determines the volume of the space 52 for sucking the chemical solution. (See paragraph No. 0045 of Document 1). However, Patent Document 1 does not clearly disclose the correspondence between the stroke adjusting screw 20 and the space 52. Therefore, the chemical injection device disclosed in Patent Document 1 cannot perform a quantitative chemical injection operation that strictly controls the injection amount of the chemical. Chemical solutions injected into plants and soil generally contain high-concentration active ingredients, and slight differences in the amount of injected chemical solution can greatly affect the growth of plants and pests. is there. For example, when the injection amount of the chemical solution is slightly larger than the predetermined amount, the plant may suffer from phytotoxicity and cause poor growth of the plant, or the injection amount of the chemical solution is slightly less than the predetermined amount. Depending on the condition, the pest control may fail. As described above, by using a chemical solution injection device that cannot perform quantitative injection, an error occurs in the chemical solution injection amount, which may cause various problems. Conventionally, there has not been known a plant chemical solution injection device for a plant or a plant-growing soil that can quantitatively inject a chemical solution.

  In addition, in the chemical liquid injector disclosed in Patent Document 1, “the sealed chemical liquid tank is attached on the barrel portion” (see claim 1 of Patent Document 1, FIG. 1 and the like). In a chemical injection device in which a chemical tank is provided on the barrel, if a large-capacity chemical tank is attached to the barrel, the burden on the operator's arm is increased when performing the chemical injection, and work efficiency is improved. There is a problem of falling. In a chemical injection device that has a chemical tank on the barrel, the capacity of the chemical tank cannot be increased, and when performing a large amount of chemical injection, the chemical tank must be desorbed many times. There is a problem that the operation becomes complicated.

Japanese Patent No. 5386194

  This invention is providing the chemical | medical solution injection device for plants which can inject | pour a chemical | medical solution quantitatively into the plant body and the soil which a plant grows.

The means of the present invention are:
(1) A cylinder that contains a chemical solution inside and has a nozzle connection part that can discharge the chemical solution at one end thereof, and a piston that has one end face located inside the cylinder and can reciprocate along the axial direction of the cylinder And a gripping member that supports the other end of the cylinder and a part of the piston protruding outside the cylinder,
In the initial state where the gripping force is not applied to the grip member, the cylinder has a piston adjusting screw portion that can displace the piston in the axial direction, and the gripping force is applied to the grip member from the initial state. A plant chemical solution injection device, comprising: an injection amount display unit that displays an amount of the chemical solution discharged from the nozzle connection portion until a discharge state in which the piston moves forward;
(2) The plant chemical solution injection device according to claim 1, wherein the cylinder is provided with a chemical solution communicating portion communicating with a chemical solution bottle on an outer surface thereof.
(3) The plant chemical solution injection device according to claim 1 or 2, wherein the nozzle connection portion is formed so that the injection nozzle is detachable.

  The plant chemical solution injection device according to the present invention is provided with an injection amount display unit for displaying the amount of the chemical solution discharged by applying a gripping force to the grip member. While adjusting the injection amount by rotating the piston adjustment screw while looking at the injection amount display part, the amount of chemical liquid displayed on the injection amount display part is discharged by gripping the grip member and applying a gripping force. The Therefore, a chemical | medical solution can be inject | poured quantitatively by using the chemical | medical solution injection device for plants in this invention.

  When injecting a chemical solution into a plant body such as a tree, it is preferable to use a soft plastic tube as an injection nozzle. On the other hand, when injecting a chemical solution into soil, a hard injection tube that is a rod shape as an injection nozzle. It is preferable to use a body. The nozzle connection part of the plant chemical injection device according to the present invention is detachable from the injection nozzle, making it ideal for injecting chemical into the plant body and injecting chemical into the soil. Various injection nozzles can be properly used.

FIG. 1 is an explanatory view showing an example of a plant chemical solution injector according to the present invention. 2A and 2B are enlarged views of the chemical solution storage tube portion 2A in the plant chemical solution injection device of FIG. 1, wherein FIG. 2A shows a state before the chemical solution is discharged, and FIG. 2B shows a state after the chemical solution is discharged. Show. FIG. 3 is a right side view showing another example of the plant chemical solution injector according to the present invention. FIG. 4 is an enlarged plan view showing a part of the plant chemical liquid injector of FIG. 3. FIG. 5 is an explanatory view showing an example of a discharge nozzle that is attached to and detached from a nozzle connection portion of the plant chemical liquid injector according to the present invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  A plant chemical solution injector 1 of the present invention includes a cylinder 2, a grip member 3, and a piston 4.

  The cylinder 2 includes a chemical solution storage tube portion 2A, a nozzle connection portion 2B, a chemical solution storage tube holding portion 2C, and a piston adjustment screw portion 2D. The chemical liquid storage tube portion 2A is formed in a cylindrical body that is long in the axial direction. A chemical solution is accommodated in the inner space of the chemical solution storage tube portion 2A. A nozzle connection portion 2B is provided at one end of the cylinder 2 in the discharge direction, that is, the end on the discharge direction A side indicated by the left-pointing arrow in FIG. The nozzle connection portion 2B opens at the end thereof, and the inner diameter of the nozzle connection portion 2B is smaller than the inner diameter of the chemical solution storage tube portion 2A. As will be described later, when the piston 4 moves forward, the chemical liquid accommodated in the cylinder 2 is discharged to the outside through the nozzle connecting portion 2B and the injection nozzle connected to the nozzle connecting portion 2B.

  A chemical solution storage tube holding portion 2C is provided at the other end portion on the opposite side to the discharge direction of the chemical solution storage tube portion 2A, that is, the end portion on the grip direction B side indicated by the right-pointing arrow in FIG. The other opening end surface of the chemical liquid storage tube portion 2A is in contact with the end surface of the chemical liquid storage tube holder 2C in the discharge direction A. This prevents the chemical liquid stored in the chemical liquid storage tube portion 2A from flowing out to the grip direction B side beyond the end surface of the chemical liquid storage tube portion 2A on the grip direction B side. 2 C of chemical | medical solution accommodation pipe | tube holding parts have a substantially truncated cone shape, and a side surface has a taper shape so that the outer diameter of the end surface in the discharge direction A may become smaller than the outer diameter of the end surface in the grip direction B. The chemical solution storage tube holding part 2C is provided with a through hole penetrating between the two end faces, and the piston 4 is inserted into the through hole. The piston 4 can be reciprocated along the axial direction of the piston itself in the through hole of the chemical solution storage tube holding portion 2C, but is supported on the surface perpendicular to the axial direction so as not to be displaced. 2 C of chemical | medical solution storage pipe holding parts contact | abut with the end surface of the chemical | medical solution storage pipe | tube part 2A in the end surface in the discharge direction A, and contact | abut with a part of grip member 3 in the end surface by the side of the grip direction B.

  The grip member 3 has a cylinder support portion 3A and a handle portion 3B. The cylinder support portion 3A and the handle portion 3B extend substantially parallel to each other at a distance from each other substantially perpendicular to the axial direction of the cylinder 2. 3 C of cylinder support parts and the handle | steering-wheel part 3B support the piston 4 which protrudes from the edge part in the grip direction B of the cylinder 2, and the cylinder 2 in the one end vicinity, and the bridge | crosslinking part 3C is provided in the other end. A negative biasing member such as a spring is provided inside the bridging portion 3C. In an initial state in which no gripping force is applied to the grip member 3 by the negative biasing force of the negative biasing member, the cylinder support portion 3A and the handle portion 3B Exists at a certain distance. When gripping force is applied by gripping the grip member 3, the negative force member provided inside the bridging portion 3C is deformed, and the contact portion of the bridging portion 3C with the handle portion 3B is substantially parallel to the axial direction of the handle portion 3B. , The gap between the end of the handle portion 3B that supports the piston 4 and the cylinder 2 is narrowed, and the piston 4 moves forward in the discharge direction A. On the other hand, when the gripping force applied to the grip member 3 is released, the bridging portion 3C gradually returns to the initial state shown in FIG. As the distance between the end and the end of the cylinder 2 increases, the piston 4 moves backward in the grip direction B.

  The piston 4 has one end face (hereinafter, sometimes referred to as “pressing end face”) positioned inside the cylinder 2. More specifically, the pressing end surface 4A of the piston 4 is located in the inner space of the chemical liquid storage tube portion 2A. The outer peripheral surface of the piston on the pressing end surface 4A and the inner wall surface of the chemical solution storage tube portion 2A are in liquid-tight contact. Therefore, in the example shown in FIG. 1, the chemical solution existing in the inner space of the chemical solution storage tube portion 2 </ b> A is prevented from flowing toward the grip direction B from the pressing surface 4 </ b> A. When a gripping force is applied to the grip member 3, the piston 4 moves forward in the discharge direction A while maintaining a liquid-tight state on the pressing surface 4A. Due to the forward movement of the piston 4, a pressing force is applied to the chemical solution in the chemical solution storage tube portion 2 </ b> A, and the chemical solution is discharged from the nozzle connection portion 2 </ b> B and the discharge nozzle connected to the nozzle connection portion 2 </ b> B.

  In the chemical solution injection device for plants in FIG. 1, an injection amount display unit 15 is provided in the chemical solution storage tube portion 2A as shown in FIG. The injection amount display unit 15 displays a scale and a numerical value corresponding to the scale. The injection amount display unit 15 may be formed on the outer wall surface of the chemical solution storage tube portion 2A, or may be formed on the inner wall surface of the chemical solution storage tube portion 2A. The chemical solution storage tube portion 2A is preferably formed to be transparent so that the injection amount display portion 15, the chemical solution 13 stored inside, and the piston 4 can be easily seen from the outside. In FIG. 2, the numerical value displayed on the injection amount display unit 15 becomes a smaller value as it goes in the ejection direction A, and becomes a larger value as it goes in the grip direction B. The unit of the numerical value is not particularly limited, but in the example shown in FIG. 2, the unit is “ml”. The minimum value of the injection amount display unit 15 indicates “0.0 ml”, the maximum value indicates “2.0 ml”, and a scale is provided every 0.2 ml.

  When a gripping force is applied to the grip member 3, the piston 4 moves forward in the discharge direction A. More specifically, the piston 4 that moves forward in synchronism with the grip member 3 to which the gripping force is applied stops the forward movement when the pressing end surface 4A is at the scale of “0.0 ml” in the injection amount display section 15. To do. In the example of FIG. 2A, the pressing end surface 4A in the initial state is located on a scale corresponding to a numerical value of “1.0 ml”. When a gripping force is applied to the grip member 3, as shown in FIG. 2B, the pressing end surface A is displaced to the position of the scale corresponding to the numerical value “0.0 ml”. Therefore, a chemical solution of “1.0 ml” is discharged by one discharge operation.

  The piston adjusting screw portion 2D is provided between the cylinder support portion 3A and the handle portion 3B, and is formed in a substantially circular shape in plan view. In the vicinity of the center portion of the piston adjusting screw portion 2D, a female screw that is screwed with a male screw provided on the outer surface of the piston 4 is provided. When the piston adjusting screw portion 2D is rotated in the circumferential direction, the piston 4 moves forward or backward along the axial direction while rotating in the circumferential direction by screwing of the female screw and the male screw. By rotating the piston adjusting screw portion 2D, the position of the pressing end surface 4A in the axial direction in the initial state where the gripping force is not applied to the grip member 3 can be displaced. Specifically, when 1.0 ml of chemical liquid is intended to be injected by one injection operation, the pressing surface 4A of the piston 4 is positioned at the scale of “1.0” in the injection amount display section 15. The piston adjustment screw B2D can be rotated while looking at the injection amount display section 15 provided in the chemical solution storage pipe section 2A so as to be displaced to the maximum.

  In addition, the numerical value in the injection amount display part, the interval at which the scale is provided, the unit of the numerical value, and the like can be appropriately changed according to the size of the chemical solution storage pipe part 2A.

  Moreover, the injection amount display part may be provided in the piston adjustment screw part instead of the chemical solution storage pipe part. In the example shown in FIG. 4, a numerical value display portion 45 </ b> B on which a plurality of different numerical values are described in the order of increasing or decreasing along the circumferential direction is provided on the outer peripheral surface of the piston adjusting screw portion 42 </ b> D. A display window 45A for displaying one numerical value in the numerical value display portion 45B is provided on a part of the outer peripheral surface of the piston screw portion 42D. In the piston adjustment screw portion 42D, the member provided with the display window 45A and the member provided with the numerical value display portion 45B have a double tube structure. When the piston adjustment screw portion 42D is rotated, the display window 45A does not rotate along the circumferential direction, but the numerical value display portion 45B rotates along the circumferential direction. When the piston adjusting screw portion 42D is rotated, the numerical value in the numerical value display portion 45B displayed on the display window 45A can be increased or decreased. The numerical value displayed in the display window 45A corresponds to a single injection amount performed by applying a grip force to the grip member. When the piston adjustment screw portion 42D is rotated, the piston 44 is displaced along the axial direction to a position corresponding to the injection amount displayed on the display window 45A. In the example of FIG. 4, “1.0” is indicated on the display window, and the piston is displaced to a position where the amount of one injection is 1.0 ml.

  The cylinder is preferably provided with a chemical communication part in a part thereof. In FIG. 1, the chemical solution communication portion 5 protrudes from the outer surface of the chemical solution storage tube portion 2 </ b> A in the cylinder 2 and is formed in a tubular shape. A seal member 9 and a tray 10 for preventing leakage of the chemical liquid are provided on the end surface of the chemical liquid communicating portion 5 opposite to the piston 4. The needle tube 11 passes through the inside of the chemical solution communicating portion 5, the seal member 9, and the saucer 10, and a sharp tip protrudes from the dish surface inside the saucer 10. A chemical solution bottle 12 is installed inside the tray 10. A typical example of the chemical solution bottle 12 is a vial. By passing the needle tube 11 through the upper lid surface of the drug solution bottle 12, the drug solution 13 flows into the cylinder 2 through the needle tube 11, and the inside of the cylinder 2 is filled with the drug solution.

  As shown in FIG. 1, in the example in which the chemical solution bottle 12 is provided at the upper part of the cylinder 2, the user must support the weight of the chemical solution bottle 12 and the chemical solution 13 accommodated inside the chemical solution bottle 12 during operation. I must. In the example in which the chemical solution bottle 12 is provided on the upper part of the cylinder 2, the capacity of the chemical solution bottle 12 is preferably about 20 ml to 100 ml so that the user can easily perform the injection operation.

  In the plant chemical solution injector 41 shown in FIG. 3, the chemical solution communicating portion is not provided on the outer surface of the cylinder. In the plant chemical solution injector 41, the piston 44 is formed in a hollow shape, and the opening end 44 </ b> B of the piston 44 located outside the cylinder 42 is connected to the chemical solution suction pipe 55. As the chemical liquid suction tube 55, a soft plastic tube can be used. The open end 44 </ b> B is connected to one end of the chemical liquid suction tube 55. The other end of the chemical liquid suction pipe 55 is immersed in the chemical liquid 53 accommodated inside the chemical liquid tank 52. Although not shown in FIG. 3, a check valve may be provided in a part of the chemical liquid suction pipe 55 in order to prevent the chemical liquid from flowing back from the cylinder 42 to the chemical liquid tank 52.

  The piston 44 has a hole in at least a part of its pressing end surface 44A. This hole communicates with the inner space of the piston 44. The chemical liquid 53 sucked up from the opening end portion 44B passes through the inner space of the piston 44 and moves from the hole provided in the pressing end surface 44A to the chemical liquid storage tube portion 42A.

  In the plant chemical solution injector 41, the chemical solution tank 52 is not installed above the cylinder 42. Therefore, even if the capacity of the chemical liquid tank 52 is increased, the chemical liquid tank does not have to be supported by hand during the injection operation, and the injection operation can be performed stably. Specifically, the chemical liquid can be injected by operating the grip member 43 while the chemical liquid tank 52 is placed on the ground. Also, a belt is attached to the outer peripheral surface of the chemical liquid tank 52, and the user can hang the belt from the neck or carry the chemical liquid tank 52 on the back using a belt like a rucksack without supporting the chemical liquid tank 52 by hand. The injection operation can be performed while moving the chemical liquid tank 52.

  As the chemical solution tank 52, for example, a tank that stores a chemical solution of 1000 ml to 5000 ml can be used.

  The chemical | medical solution used for this invention should just be the liquid body inject | poured into the plant body and the soil which a plant grows. Examples of the chemical solution include various agricultural chemicals and liquid fertilizers. Examples of various agricultural chemicals include insecticides, fungicides, insecticide fungicides, herbicides, plant regulators, and the like.

  The object to which the plant chemical injection device according to the present invention is used is a plant and soil on which the plant grows. Typical examples of the plant include pine, such as red pine, black pine, spruce, tomato, larch, and spruce, cedars such as cedar, sawara and hinoki, and woody plants such as cherry.

  Next, various injection nozzles that are connected to the nozzle connection part and used for chemical injection will be described.

  An example of the injection nozzle is a soft plastic tube. A soft plastic tube is preferably used particularly when a chemical solution is injected into a plant body such as a tree. For example, a chemical solution can be injected into a tree by opening a hole reaching the vascular bundle using a drill on the side of the tree and passing a plastic tube through the hole. Preferable examples of the plastic tube include a vinyl chloride tube, a polyethylene tube, a polypropylene tube, and a urethane tube. The nozzle connection portion and the injection nozzle can be connected by a luer lock method.

As another example of the injection nozzle, there is a soil injection pipe 51 shown in FIG. The soil injection pipe 51 includes an injection pipe body 51A and a soft tube 51B. The injection tube 51A is
By being pierced into the soil, the chemical solution can be injected deep into the ground. The injection tube body 51A can be formed to have a length of about 0.5 m to 2.0 m, for example.
As the injection tube body 51A, a hard tube material is used so that the injection tube body 51A is erected without falling when pierced into the soil. A typical example of the injection tube body 51A is a hard vinyl chloride tube. The injection tube body 51A does not open at both end faces, and has an injection opening 54 on the side surface in the vicinity of one end thereof. The injection tube body 51A
In the vicinity of the other end, it communicates with the soft tube 51B. The opening end portion of the soft tube 51B is connected to a nozzle connection portion in the plant chemical liquid injector. The soft tube and the nozzle connection portion can be connected by a luer lock method. When a gripping force is applied to the handle portion, the chemical liquid squeezed out from the plant chemical liquid injector passes through the soft tube 51B and the injection tube body 51A and is discharged from the injection opening 54.

  Next, the operation of the plant chemical solution injector according to the present invention will be described.

  First, the effect | action of the chemical | medical solution injection device 1 for plants is demonstrated using FIG. When using the plant chemical solution injection device 1, the injection amount is adjusted by rotating the piston adjustment screw portion 2 </ b> D and adjusting the position of the piston 4. Specifically, the position of the pressing end surface 4A is adjusted while looking at the injection amount display portion 15 on the side surface of the chemical solution storage tube portion 2A. Next, an injection nozzle is attached to the nozzle connection portion 2B. In an example of injecting a chemical into a plant body such as a tree, a soft plastic tube is attached to the nozzle connection portion 2B.

  Further, the needle tube 11 is pierced into the lid surface of the vial containing the drug solution inside while the tip of the needle tube 11 is directed vertically downward. Further, while twisting the vial, the needle tube 11 is deeply screwed into the inside of the drug solution bottle 12. Next, when the tip of the needle tube 11 is directed vertically upward, the drug solution 13 flows from the tip of the needle tube 11 through the drug solution communicating portion 5 into the drug solution storage tube portion 2A.

  Next, the outer surface of the tree is cut using a drill or the like, and a hole reaching the vascular bundle of the tree is opened. As a specific example, a hole having a hole diameter of about 5 mm, an angle formed by a tree axis and a hole axis of about 45 °, and a length in the axis direction of the hole of about 4 cm may be mentioned. A plastic tube is inserted into the hole opened by the drill, and a gripping force is applied by grasping the grip member. When a gripping force is applied to the grip member, the piston 4 moves forward in the discharge direction A, and a pressing force is applied to the chemical liquid in the chemical liquid storage tube portion 2A on the pressing surface 4A. Thereby, the chemical | medical solution 13 in 2A of chemical | medical solution accommodation pipe parts is inject | poured into the body of a tree through a plastic tube.

  In the medicinal-solution injection device 1 according to the present invention, discharge is performed by the pressing end surface 4A of the piston 4 from the initial state where the gripping force is not applied to the grip member 3 to the pressing state where the gripping force is applied to the grip member 3. The volume of the chemical liquid to be applied corresponds to the numerical value on the scale of the injection amount display unit 15 where the pressing end surface 4A of the piston 4 is located in the initial state. Specifically, the pressing surface 4A located on the scale of the numerical value “1.0” in the initial state moves forward to the position of the scale of the numerical value “0.0” after the forward movement. Therefore, a chemical solution of “1.0 ml”, which is the volume of the pressing surface 4A moved forward, is injected into the plant body from the injection nozzle. In the plant chemical injection device according to the present invention, by adjusting the position of the pressing surface 4A in advance while looking at the injection amount display unit 15, it is possible to inject a fixed amount of chemical solution indicated by the injection amount display unit 15. .

  After the injection of the chemical solution, the plastic tube is taken out of the tree while holding the grip member 3 without releasing the gripping force of the grip member 3. At this time, it is preferable to keep the plant chemical solution injector 1 as horizontal as possible so that no dripping occurs from the tip of the nozzle. Next, the cylinder 2 is turned upside down so that the drug solution bottle 12 faces the lower part of the cylinder 2, the receiving tray 10 and the drug solution bottle 12 are gripped, and the needle tube 11 is removed from the drug solution bottle 12. Thereafter, the tip of the plastic tube is inserted into the waste liquid bottle, and a chemical solution in the cylinder 2 is applied by applying a gripping force to the grip member 3 several times while the nozzle connecting portion 2B of the plant chemical solution injector 1 is directed downward. Can be extracted.

  Next, the operation of the plant chemical solution injector 41 of FIG. 3 will be described. When using the plant chemical solution injector 41, first, the piston adjustment screw portion 42D is rotated to adjust the injection amount. Specifically, the piston adjusting screw portion 42D is rotated while looking at the display window 45A. Since the numerical value displayed on the display window 45A indicates the volume of the chemical liquid to be injected by one discharge, the piston adjustment screw portion 42D is rotated until the desired numerical value of the injection amount is displayed on the display window 45A. Next, an injection nozzle is attached to the nozzle connection portion 42B. Further, a chemical liquid suction pipe 55 is connected to the opening end 44 </ b> B of the piston 44.

  While the nozzle connection portion 42B is directed vertically upward, the tip of the injection nozzle is immersed in the chemical solution in the chemical solution tank, and the grip member 43 is gripped several times. When the gripping force applied to the grip member 43 is released, the negative pressure is generated inside the chemical solution storage tube portion 42A due to the backward movement of the piston 44A, and the chemical solution flows into the chemical solution storage tube portion 42A. Further, since the nozzle connecting portion 42B is vertically upward and the piston adjusting screw portion 42D is vertically downward, the chemical liquid flows into the inner space of the piston according to gravity, and the chemical liquid suction pipe 55 is also filled with the chemical liquid.

  When injecting a chemical into a tree, a plastic tube is inserted into a hole opened in the tree by a drill, and a gripping force is applied by grasping the grip member 43. When a gripping force is applied to the grip member 43, the piston 44 moves forward, and a pressing force is applied to the chemical solution in the chemical solution storage tube portion 42A at the pressing end surface 44A. Thereby, the chemical | medical solution in 42A of chemical | medical solution accommodation pipe parts is inject | poured into the body of a tree through an injection | pouring nozzle.

  In the plant chemical injection device 41 according to the present invention, the discharge is performed by the pressing end surface 44A of the piston 44 from the initial state where the gripping force is not applied to the grip member 43 to the pressing state where the gripping force is applied to the grip member 43. The volume of the chemical liquid to be applied matches the numerical value displayed on the display window 45A. Specifically, when a value of “1.0” is displayed on the display window 45A, the chemical solution for “1.0 ml” is discharged from the injection nozzle by the forward movement of the piston 44. In the plant chemical solution injector according to the present invention, a fixed amount of chemical solution displayed in the display window 45A can be injected by rotating the piston adjustment screw portion 42D in advance and adjusting the numerical value of the display window 45A.

  After the injection of the chemical solution, the plastic tube is taken out of the tree while holding the grip member 43 without releasing the gripping force of the grip member 43. At this time, it is preferable to keep the plant chemical solution injector 41 as horizontal as possible so that no dripping occurs from the tip of the nozzle. Thereafter, by inserting the tip of the injection nozzle into the waste liquid bottle and applying the gripping force to the injection grip 43 several times while the nozzle connection portion 42B is directed downward, the chemical solution remaining in the chemical solution storage tube portion 42A can be extracted. it can.

1, 41 Plant chemical injection device 2, 42 Cylinder 2A, 42A Chemical solution storage tube 2B, 42B Nozzle connection 2C, 42C Chemical solution storage tube holder 2D, 42D Piston adjustment screw 3, 43 Grip member 3A, 43A Cylinder support Portions 3B, 43B Handle portions 3C, 43C Bridging portions 4, 44 Pistons 4A, 44A Pressing end surface 5 Chemical solution communicating portion 9 Sealing member 10 Sauce pan 11 Needle tube 12 Chemical solution bottles 13, 53 Chemical solutions 15, 45 Injection amount display portion 44B Open end portion 45A Display window 45B Numerical display 51 Soil injection pipe 51A Injection pipe body 51B Soft tube 52 Chemical liquid tank 54 Injection opening 55 Chemical liquid suction pipe A Discharge direction B Grip direction

Claims (3)

A cylinder containing a chemical solution inside and having a nozzle connection part capable of discharging the chemical solution at one end thereof;
A piston having one end face located inside the cylinder and capable of reciprocating along the axial direction of the cylinder;
A gripping member for supporting the other end of the cylinder and a part of the piston protruding outside the cylinder,
In the cylinder,
In an initial state where grip force is not applied to the grip member, a piston adjusting screw portion capable of displacing the piston in the axial direction;
An injection amount display unit that displays the amount of the chemical solution discharged from the nozzle connection unit from the initial state to a discharge state in which the piston moves forward when a gripping force is applied to the grip member is provided. A medicinal solution injection device for plants.   The plant chemical solution injection device according to claim 1, wherein the cylinder is provided with a chemical solution communicating portion communicating with a chemical solution bottle on an outer surface thereof.   The said chemical | medical agent liquid injection apparatus of Claim 1 or 2 with which the said nozzle connection part is formed so that an injection | pouring nozzle can be attached or detached.

Images