JPH0411169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates primarily to a chemical liquid injection container for injecting a chemical liquid into the body of a pine tree.

PRIOR TECHNOLOGY The occurrence of pine nematode disease, which is caused by the invasion and proliferation of pine nematode, has become a problem for pine trees.
For example, injecting a chemical solution such as morantel tartrate solution (trade name ``Green Guard'', manufactured by Taito Phizer Co., Ltd.) or levamisole hydrochloride (trade name ``Centyuly'', manufactured by Hodogaya Chemical Industry Co., Ltd.) into the tree. is effective (Japanese Unexamined Patent Publication No. 198338/1983).

When injecting such chemical solutions, it is effective to apply a certain pressure to the chemical solution in order to prevent the injection efficiency from deteriorating due to sap (pine resin), and an injection device for this purpose has already been proposed. (the same bulletin). This product has an air inlet with a check valve in the container body that stores the chemical solution,
For example,
Connect a pressurizing device such as a commercially available air pump to the air inlet to pressurize the space inside the container body containing the chemical solution to a predetermined pressure, and then insert the injection nozzle connected to the chemical solution outlet into the tree. By inserting the chemical liquid into the chemical liquid injection hole formed in the container body, the chemical liquid can be pressurized and injected into the tree body by the pressurizing force of the pressurized air inside the container main body.

Problems to be Solved by the Invention According to such prior art, the pressurizing force that can be used when injecting the drug solution depends only on the pressurized air sealed in the space inside the container body.
As the chemical liquid injection progresses, the amount of chemical liquid inside the container body decreases and the space volume increases, and the effective pressurizing force also decreases accordingly, making it difficult to maintain a good injection efficiency of the chemical liquid. It was inevitable. In addition, when injecting a medicinal solution, a pressurizing device such as an air pump must be connected and a pressurizing operation must be performed, making the work extremely complicated.

Therefore, in view of the problems of the prior art, an object of the present invention is to maintain the pressurizing force almost constant even as the chemical liquid injection progresses by using a gas cylinder installed in the container body as a pressurizing source. It is an object of the present invention to provide a new chemical liquid injection container that can be used in a variety of applications and has extremely good workability.

Means for Solving the Problems The configuration of the present invention for achieving the object includes a container body, a cylinder holder, and an operation nozzle, and the container body has an injection nozzle at its tip,
The cylinder holder detachably holds the gas cylinder by inserting it into the container body, and the operation knob operates the tip part of the gas cylinder from the outside of the container body through a flexible membrane part that forms a part of the cylinder holder. The gist is that it can be switched between the gas ejection position and the stop position.

Note that the cylinder holder and the operation knob may be detachable from the container body via the intermediate lid.
In addition, at this time, the container body may be provided with a bellows container for storing the gas cylinder held in the cylinder holder, and the bellows container may expand and contract toward the inside of the container body and can be sealed with an intermediate lid. .

Furthermore, the container body may be provided with a double scale in the opposite direction to indicate the amount of the medicinal liquid contained therein.

With this configuration, after storing a predetermined amount of chemical in the container body and inserting the injection nozzle into the chemical injection hole drilled in the tree, the gas cylinder can be opened by operating the operation knob. The gas from the container body fills the space inside the container body and can apply a predetermined pressurizing force to the chemical solution, so that pressurized injection of the drug solution can proceed.

At this time, even if the amount of the chemical solution inside the container body decreases as the chemical solution injection progresses, the gas is continuously replenished from the gas cylinder, so the reduction in the pressurizing force is extremely small.

If an intermediate lid is provided to allow the cylinder holder and the operation knob to be attached to and removed from the container body, the cylinder holder and the operation knob can be separated from the container body through the intermediate lid, so that the connection to the container body can be made easier. It is convenient for replenishing storage and replenishment of chemical liquids, and replacing gas cylinders in case of failure to inject chemical liquids.

Also, when installing a bellows container inside the container body,
Since the bellows container is expanded by the gas from the gas cylinder and the chemical solution can be pressurized indirectly through the bellows container, there is no risk of an unexpected reaction occurring between the drug solution and the gas.

When the container body is equipped with double scales in the opposite direction,
The amount of the chemical solution stored in the container body can be easily visually confirmed not only in the normal posture but also while injecting the chemical solution into the tree body in the inverted posture.

It works as described above.

Example Examples will be described below with reference to the drawings.

The chemical liquid injection container includes a container body 10, a cylinder holder 20, and an operation knob 30 as main members (FIGS. 1 and 2).

The container body 10 is a container made of hard or semi-hard plastic such as polypropylene, and has an injection nozzle 11 screwed onto its tip. That is, the tip of the container body 10 is formed with an opening 10b with a male thread 10a, while the base of the injection nozzle 11 is formed with a female thread 11.
a and a knurl 11b (Fig. 3), and the opening 10b has a skirt-like part 11c inside the injection nozzle 11 and an annular protrusion 1.
1d. Injection nozzle 11
A sleeve 12 made of an elastic rubber material is attached to the distal end portion (FIG. 2).

A scale 10c is formed on the circumferential side of the container body 10, and the scale 10c allows the amount of the drug solution stored inside to be read both in its normal position and in its inverted position. It is a double scale in the opposite direction. An opening with a large diameter male threaded portion 10d is formed at the rear of the container body 10 (FIG. 1).

The cylinder holder 20 is integrally molded from, for example, low-density polyethylene, and has a flange portion 21.
, a membrane portion 22 , and a circumferential side portion 23 .

The flange portion 21 is formed on one end side of a cylindrical peripheral side portion 23, while the peripheral side portion 23 forms an inner cylinder portion 23b with a deep annular groove 23a from the side where the flange portion 21 is formed. A male thread 23c is formed on the outer periphery of the inner cylindrical portion 23b. The membrane portion 22 is formed to close the inner cylinder portion 23b. The membrane portion 22 has a thinner central portion and is flexible as a whole, and small-diameter guide tubes 22a and 22b protrude from the center toward the outside and inside. There is. Each inlet end of the guide tubes 22a, 22b is chamfered toward the inner surface, and a groove 22c is formed in the bottom of the inner guide tube 22b (FIG. 4).

Inside the circumferential side part 23, a large number of plate-shaped guide ribs 24, 24... are formed in the generatrix direction (first
), a concave portion 24a and a convex portion 24b are formed on the inner edge of each guide rib 24 (FIG. 5), and is removably engaged with the annular protrusion B1 on the upper part of the gas cylinder B. shall be. That is, the cylinder holder 20, via the guide ribs 24, 24...
Gas cylinder B can be held detachably,
At this time, it is assumed that the tip portion B2 of the gas cylinder B is inserted into the guide tube 22b at its leading end.

The operating knob 30 is a cap-shaped member with a closed top surface (FIG. 1), and has a knurl 30a formed on its upper outer periphery. A small diameter cylindrical pressing portion 32 is formed on its axis. Also, on the outside, in the circumferential direction, there are four hooks 33, 33...
are arranged downward at equal intervals.

An intermediate lid 40 is used to assemble the cylinder holder 20 and the operating knob 30 together.

The intermediate lid 40 is a stepped double cylindrical member formed concentrically with a small-diameter cylindrical portion 41, an intermediate-diameter inner cylindrical portion 42, and a large-diameter outer cylindrical portion 43. 41 has a hook 33 of the operation knob 30,
Approximately triangular protrusions 44, 44... that engage with 33...
are formed at equal intervals. However, the protrusions 44, 4
4... is set to be somewhat narrower than the maximum width of the hook 33 of the operating knob 30. In addition, the inner cylindrical portion 42 and the outer cylindrical portion 43 each have a male thread 23c on their inner surfaces.
Female threads 42a and 43a are formed which are screwed into the male thread 10d of the container body 10. Outer cylinder part 4
A knurl 43b is formed on the outer surface of 3 (FIG. 5).

When using such a drug solution injection container, first,
Gas cylinder B is attached to cylinder holder 20. The gas cylinder B is filled with a stable aerosol gas such as chlorofluorocarbon butane that easily liquefies at room temperature at a predetermined pressure, and the gas can be ejected by pushing down the tip part B2. , it is assumed that the blowout of gas can be stopped by removing the force applied to the tip portion B2. Place gas cylinder B in cylinder holder 2
0, the tip portion B2 is inserted into the guide cylinder 22b, but its tip does not come into contact with the cylinder holder 20, and there is no space between the tip portion B2 and the inner surface of the guide cylinder 22b. It is assumed that sufficient voids exist (Figure 5).

Subsequently, the cylinder holder 20 is screwed onto the inside of the intermediate lid 40. At this time, the former male thread 23c and the latter female thread 42a are screwed together, the flange part 21 of the former is inserted into the intermediate part of the inner cylinder part 42 and the outer cylinder part 43 of the latter, and 42 shall be fitted into the former annular groove 23a.

Next, the operating knob 30 is attached to the intermediate lid 40. At this time, the hooks 33, 33 of the operation knob 30
... is positioned between the protrusions 44, 44... of the intermediate lid 40, and when a light pressing force is applied to the upper surface of the operating knob 30 (arrow K1 in FIG. 5), the small protrusions on both sides of each hook 33 The portions 33a, 33a are pushed between the adjacent protrusions 44, 44 of the intermediate lid 40 and pass downward, so that the operating knob 30 and the intermediate lid 40 are not separated inadvertently. Further, in this state, the tip of the pressing portion 32 of the operation knob 30 is inserted into the guide tube 22a outside the cylinder holder 20,
It is assumed that the upper surface of the cylinder holder 20 is substantially in contact with the upper surface of the cylinder holder 20.

Next, the injection nozzle 11 is temporarily sealed,
A predetermined amount of liquid medicine is stored in the container body 10. The chemical solution can be dispensed from the large diameter opening with the male thread 10d at the rear, and the amount of the stored drug solution at this time can be measured by the numbers graduated from the injection nozzle 11 side of the scale 10c. After storing the chemical solution, attach the intermediate lid 4 through a suitable ring packing P.
0 onto the container body 10, the cylinder holder 2
The gas cylinder B held by the container body 10 is now housed inside the container body 10. (Figure 2).

At the site, after opening the injection nozzle 11, insert the injection nozzle 11 into the chemical injection hole drilled in the tree.
Insert the tip of the gas cylinder B, and then operate the operation knob 30 to blow out gas from the gas cylinder B. That is, when the operating knob 30 is pushed in the direction of arrow K1 in FIG. Gas can be ejected. By twisting the operation knob 30 in the direction of arrow K2 in the figure, the hooks 33, 33... can be engaged with the protrusions 44, 44... of the intermediate lid 40 (see the two points in the figure). (dashed line), hereinafter gas cylinder B
It is possible to continue blowing out gas from the

Further, in this way, the operation knob 30 holding the tip portion B2 at the gas ejection position is moved by the arrow K
By twisting in the opposite direction of 2 and disengaging the hooks 33, 33... and the protrusions 44, 44..., the tip portion B2 can be returned to the original gas stop position.

The ejected gas flows through the concave groove 22c on the back side of the membrane portion 22, the tip portion B2, and the guide tube 22b.
Since the inside of the container main body 10 is filled through the gap between the container main body 10 and the container main body 10, pressure can be applied to the drug solution in the container main body 10, and the drug solution can be injected under pressure.

The pressure applied to the chemical solution as described above is
It is determined by the nature and amount of gas sealed in gas cylinder B. In other words, the type of gas is butane, whose saturated vapor pressure at room temperature is about 2 to 3 atm, which is suitable as a pressurizing pressure during pressurized injection.
Isobutane Freon (Freon gas product name) R
-21, R-114, etc. can be used, and if the amount is set so that the internal volume of the container body 10 can be sufficiently filled with the saturated vapor of the gas, the chemical liquid will flow as the chemical liquid injection progresses. Even if the amount decreases, the pressing force can be kept almost constant.

Once a predetermined amount of chemical liquid has been injected into the chemical liquid injection container, the tip portion B2 of gas cylinder B is returned to the gas stop position, the chemical liquid injection container is recovered, the chemical liquid is stored therein, and the chemical liquid injection container can be reused. It can be replaced as appropriate.

Other Embodiments A bellows container 50 can be housed inside the container body 10 (FIGS. 6 and 7). The bellows container 50 is
The ring packing P and the flange portion 21 of the cylinder holder 20 are attached to the rear opening of the container body 10.
The flange portion 5 is attached by sandwiching it between the two sides.
1 and a main body part 52 that expands and contracts toward the inside of the container body 10, and the tip of the main body part 52 is sealed by a head 53 that matches the tapered internal shape of the container main body 10. has been done. Further, in the fully assembled state, the gas cylinder B held by the cylinder holder 20 is stored in the bellows container 50 (dotted line in FIG. 6).

Now, when gas is ejected from the gas cylinder B according to the above-mentioned procedure, the ejected gas is transferred to the bellows container 5.
It fills up inside 0. Therefore, the bellows container 50, which had initially contracted short, expands due to the pressurizing force of the gas.
Since the internal volume of the container body 10 is reduced, the medicinal solution in the container body 10 can be indirectly pressurized via the bellows container 50. By preventing direct contact between the gas and the chemical solution, there is no risk of the chemical solution being inadvertently altered.

Note that since the bellows container 50 simply extends inside the container body 10 to reduce its internal volume, its specific shape may be any shape other than that shown. However, in order to increase the amount of change in the internal volume of the container body 10 between when it is retracted and when it is extended, it is preferable to use a type that can maintain its shape when it is retracted.

Effects of the Invention As explained above, according to the present invention, it is possible to switch the container body and the tip portion of the gas cylinder housed in the container body between the gas ejection position and the gas stop position from the outside of the container body. By providing an operating knob that can be used to inject a chemical solution under pressure, it is sufficient to simply operate the operating knob when injecting a chemical solution under pressure, resulting in extremely good workability. Even as the chemical liquid injection progresses, it can be maintained at a substantially constant value determined by the properties of the gas from the gas cylinder, so there is an excellent effect that the chemical liquid injection efficiency can be maintained at a good level.

[Brief explanation of drawings]

1 to 5 show an embodiment, FIG. 1 is an exploded perspective view of the entire structure, FIG. 2 is a partially cutaway overall assembly view,
3 is an enlarged view of the main part of FIG. 2, FIG. 4 is an enlarged perspective view of the main part of the cylinder holder, and FIG. 5 is an enlarged sectional view of the main part. 6 and 7 show other embodiments, FIG. 6 is a view corresponding to FIG. 2, and FIG. 7 is an enlarged sectional view of a main part corresponding to FIG. 5. B...Gas cylinder, B2...Tip part, 10...Container body, 10c...Scale, 11...Injection nozzle, 2
0...Cylinder holder, 22...Membrane part, 30...
Operation knob, 40... intermediate lid, 50... bellows container.

Claims (1)

[Scope of Claims] 1. A container body having an injection nozzle at its tip, a cylinder holder that detachably holds a gas cylinder by inserting it into the container body from the rear of the container body, and a part of the cylinder holder. From the outside of the container body through a flexible membrane portion formed,
A chemical liquid injection container comprising an operation knob that can switch the tip of a gas cylinder between a gas ejection position and a gas stop position. 2. The drug solution injection container according to claim 1, wherein the cylinder holder and the operation knob are detachably attached to the container body via an intermediate lid. 3 A bellows container for storing the gas cylinder held in the cylinder holder is installed inside the container body,
3. The drug solution injection container according to claim 2, wherein the bellows container expands and contracts toward the inside of the container body and can be sealed by the intermediate lid. 4. The drug solution injection container according to any one of claims 1 to 3, wherein the container body is provided with a double scale in an opposite direction to indicate the amount of the drug solution stored.