JP2005059882A - Chemicals liquid charger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent damages of each component caused by connection and disconnection of a gas cylinder. <P>SOLUTION: A chemicals liquid charger comprises a chemical container 1 with chemicals liquid stored therein, a nozzle 2 provided on a tip part of the chemicals liquid container 1 and connected to a chemicals liquid feeding object with the chemicals liquid fed therein, a chemicals liquid charging port 3 which is provided in a rear end part of the chemicals liquid container 1 to charge the chemicals liquid inside the chemicals liquid container 1, attachments 4 and 7 connected to the chemicals liquid charging port 3, a check valve 5 built in the attachments 4 and 7 to prevent a pressure drop in the chemicals liquid container 1, and a gas cylinder 6 connected to the attachments 4 and 7 to open the check valve 5 filled with gas to pressurize the chemicals liquid stored in the chemicals liquid container 1. The attachments 4 and 7 comprise the chemicals liquid charging port side attachment 4 having a fitting structure 43 to the chemicals liquid charging port 3 with the check valve 5 built therein, and the gas cylinder side attachment 7 having a fitting structure 71 to the gas cylinder 6. The chemicals liquid charging port side attachment 4 and the gas cylinder side attachment 7 are attachable/detachable to/from each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

    The present invention belongs to a technical field related to a chemical solution injection apparatus that injects a chemical solution (insect repellent, insecticide, nutrient, activator, etc.) into a chemical solution injection target made of a tree or the like under pressure.

  As a chemical solution injection device that pressurizes and injects a chemical solution to an object to be injected with a chemical solution, there is an apparatus configured to accommodate a chemical pressure source in a chemical solution container that stores the chemical solution in order to simplify the exterior structure ( For example, refer to Japanese Patent Publication No. 4-11169. However, continuous injection is required in order to sufficiently exert the medicinal effect of the chemical solution, and the chemical solution container is required to have a volume capable of sufficiently storing the chemical solution. For this reason, attempts have been made to arrange the pressurized source of the chemical solution outside the chemical solution container.

2. Description of the Related Art Conventionally, as a chemical solution injection device in which a chemical solution pressurization source is disposed outside a chemical solution container, for example, the following devices are known.
Japanese Patent Laid-Open No. 2000-125664 discloses a chemical solution container in which a chemical solution is stored, a nozzle provided at a tip portion of the chemical solution container and connected to a chemical solution injection target into which the chemical solution is injected, and a chemical solution container A chemical solution inlet that is provided at the end for supplying a chemical solution into the chemical solution container, an attachment that is connected to the chemical solution input port, a check valve that is built into the attachment and prevents pressure decay in the chemical solution container, and a chemical solution container A chemical injection device is described that includes a gas cylinder that is filled with a gas that pressurizes a stored chemical and is connected to an attachment to open a check valve.

  In the chemical injection device according to Patent Document 1, a gas cylinder having a built-in on-off valve that is widely used as an aerosol can is used, and the gas cylinder is connected to an attachment so that the on-off valve built in the gas cylinder The check valve built in the attachment is opened, and the chemical solution that is introduced from the chemical solution inlet and stored in the chemical solution container is pressurized with gas, and pressurized and injected into the chemical injection target from the nozzle. . When the gas cylinder is detached from the attachment, the check valve built in the attachment is closed, and leakage of the gas pressurizing the chemical stored in the chemical container is prevented.

  In the chemical injection device according to Patent Document 1, the attachment is formed in a cylindrical shape with a long shaft length that is fitted to the barrel of the gas cylinder, and the gas cylinder and the attachment are connected by inserting and removing the gas cylinder with a long span with respect to the attachment. Will be withdrawn. For this reason, if there is even a slight mistake in the insertion / removal direction of the gas cylinder, there is a problem that the check valve built in the discharge port (stem) of the gas cylinder or the attachment is damaged. Further, when the gas cylinder is inserted / removed with respect to the attachment in a state where the nozzle is connected to the chemical injection target, there is a problem that the stress of the insertion / removal of the gas cylinder is applied to the nozzle as it is and the nozzle is damaged.

  The present invention has been made in consideration of such problems, and an object of the present invention is to provide a chemical injection device that can prevent damage to each part associated with connection and disconnection of a gas cylinder.

  In order to solve the above-described problems, the chemical liquid injector according to the present invention employs means described in each of the claims.

  That is, according to the first aspect, the chemical solution container in which the chemical solution is stored, the nozzle provided at the tip portion of the chemical solution container and connected to the chemical solution injection target into which the chemical solution is injected, and the chemical solution provided at the rear end portion of the chemical solution container A chemical solution inlet for introducing a chemical solution into the container, an attachment connected to the chemical solution inlet, a check valve built in the attachment to prevent pressure decay in the chemical solution container, and a chemical solution stored in the chemical solution container are added. In a chemical injection device equipped with a gas cylinder filled with gas to be pressurized and connected to the attachment to open the check valve, the attachment has a built-in check valve and a mounting structure for the chemical injection port is provided. It is divided into an attachment and a gas cylinder side attachment that is provided with a gas cylinder mounting structure. The chemical solution inlet side attachment and the gas cylinder side attachment are removable. And wherein the Rukoto.

  In this means, connection and disconnection of the gas cylinder are performed by attaching and detaching the chemical liquid inlet side attachment attached to the chemical liquid inlet and the gas cylinder side attachment attached to the gas cylinder.

  According to a second aspect of the present invention, in the chemical liquid injector of the first aspect, the chemical liquid inlet side attachment and the gas cylinder side attachment are detachable by an engagement structure in which an engagement piece engages and disengages. And

  In this means, the chemical solution inlet side attachment and the gas cylinder side attachment are attached and detached by engagement and disengagement.

  According to a third aspect of the present invention, in the chemical liquid injector according to the second aspect, the engagement structure is engaged and disengaged by abutting the chemical liquid container and the gas cylinder in the axial direction and rotating in the circumferential direction. It is characterized by.

  In this means, engagement and disengagement of the chemical solution inlet side attachment and the gas cylinder side attachment are abutted and rotated.

  Moreover, in Claim 4, in the chemical injection device according to any one of claims 1 to 3, the attachment structure of the chemical liquid inlet side attachment to the chemical liquid inlet is a screwed structure, and the attachment structure of the gas cylinder side attachment to the gas cylinder Is a fitting structure.

  In this means, the chemical liquid inlet side attachment is screwed and attached to the chemical liquid inlet, and the gas cylinder side attachment is fitted and attached to the gas cylinder.

  In the chemical injection device according to the present invention, the connection and disconnection of the gas cylinder are performed by attaching and detaching the chemical liquid inlet side attachment attached to the chemical liquid inlet and the gas cylinder side attachment attached to the gas cylinder, and the gas cylinder is attached to and detached from the attachment. Therefore, there is an effect that it is possible to prevent damage to each part due to connection and disconnection of the gas cylinder.

  Further, as the second aspect, since the chemical liquid inlet side attachment and the gas cylinder side attachment are attached and detached by engagement and disengagement, the chemical liquid inlet side attachment and the gas cylinder side attachment are detachable with a simple mechanical configuration. .

  Further, as claimed in claim 3, since the engagement and disengagement of the chemical solution inlet side attachment and the gas cylinder side attachment are made by abutting and turning, the connecting and releasing are made by the abutting, and the connection is held and released by the turning. There is an effect that can be set to do.

  According to a fourth aspect of the present invention, the chemical liquid inlet side attachment is screwed and attached to the chemical liquid inlet, and the gas cylinder side attachment is fitted and attached to the gas cylinder, so that the chemical liquid inlet side attachment is highly airtight and watertight. A simple one-touch attachment is made with the gas cylinder side attachment.

  Hereinafter, the best mode for carrying out a chemical liquid injector according to the present invention will be described with reference to the drawings.

  In this embodiment, a chemical solution injection target T made of a tree is injected with a chemical solution W made of an insecticide and an insecticide.

  As shown in FIG. 1, this embodiment is composed of each part of a chemical liquid container 1, a nozzle 2, a chemical liquid inlet 3, a chemical inlet side attachment 4, a check valve 5, a gas cylinder 6, and a gas cylinder side attachment 7.

  The chemical solution container 1 stores a chemical solution W, and a nozzle mounting portion for watertightly attaching the nozzle 2 to a lower end portion of a deformed container body provided with a protruding portion 11 bulging in a spherical shape in the lower half. 12 is provided. The overhanging portion 11 enlarges the amount of the chemical solution W stored to enable the long-term injection of the chemical solution W, and lowers the storage center of the chemical solution W to enable the injection of the chemical solution W in a stable posture. In addition, the overhang part 11 contributes also to pressure reduction near the lower end part of the chemical liquid W. The nozzle mounting portion 12 enables the nozzle 2 to be replaced.

  The nozzle 2 is connected to a chemical liquid injection target T into which the chemical liquid W is injected, and includes a tapered tube. This nozzle 2 is connected to the chemical injection target T by being inserted into, for example, a connection hole formed in the chemical injection target T, and a plurality of nozzles having different lengths, diameters, etc. It is prepared and used as appropriate.

  The chemical solution inlet 3 is used for supplying the chemical solution W into the chemical solution container 1, and is integrally molded or fixed to the rear end portion of the chemical solution container 1, and a screw portion 32 of a male screw is formed on the outer peripheral surface of the wide-diameter cylindrical portion 31. Is engraved.

  The chemical liquid inlet side attachment 4 is connected to the chemical liquid inlet 3, and a relatively small diameter main body portion 42 is coaxially integrated with a relatively large diameter cap-shaped connection portion 41. The connecting portion 41 is provided with a female screw portion 43 serving as a mounting structure in a screwed structure to the screw portion 32 of the chemical liquid inlet 3 on the inner peripheral surface, and a cylindrical portion of the chemical inlet 3 on the end surface. A packing 44 is provided to ensure airtightness and watertightness with respect to 31. The main body portion 42 is provided with a stem receiver 45 that receives and slides a discharge pipe (stem) 63 (to be described later) of the gas cylinder 6 at the center of the shaft, and two trapezoidal engagement pieces with an angle of 180 degrees on the outer peripheral surface. 46 protrudes and is provided oppositely.

  The check valve 5 prevents pressure decay in the chemical solution container 1, and is built in the main body portion 42 of the chemical solution inlet side attachment 4, connected to the stem receiver 45, and protrudes into the connection portion 41. The check valve 5 is composed of a slide valve that is elastically biased in the closing direction (in the direction of the stem receiver 45 of the chemical solution inlet side attachment 4) by a coil spring, for example, by a discharge pipe (stem) 63 of the gas cylinder 6. It is opened in response to the pressing of the stem receiver 45 of the chemical solution inlet side attachment 4.

  The gas cylinder 6 is filled with a gas for pressurizing the chemical solution W stored in the chemical solution container 1, and an open / close valve (not shown) is provided on a pressure-resistant mount on one end side of the body portion 61 that forms a gas filling section. A discharge pipe (stem) 63 projects from the center of a cover flange 62 that is built in and closes the pressure-resistant mount. As the gas filled in the gas cylinder 6, an inert gas that does not react with air or the chemical liquid W is selected.

  The gas cylinder side attachment 7 is connected to the gas cylinder 6 and is attached to and detached from the chemical solution inlet side attachment 4. The ring serving as an attachment structure with a fitting structure to the gas cylinder 6 on the inner peripheral surface of one end of the cylindrical shape. The projections 71 are provided, and two U-shaped first engagement grooves 72 that allow the engagement pieces 46 of the chemical solution inlet side attachment 4 to pass through each other are provided at the other end of the cylindrical shape. As shown in detail in FIGS. 3 and 4, the first engagement groove 72 is a second engagement groove that guides the engagement piece 46 of the chemical solution inlet side attachment 4 that has passed therethrough in the cylindrical axial direction as it is. 73 and the 3rd engaging groove 74 which guides to the circumferential direction of a cylinder shape are provided continuously. The second engaging groove 73 also constitutes a terminal end of the engaging piece 46 of the chemical liquid inlet side attachment 4 in the circumferential direction of the cylinder, and is opposite to the engaging piece 46 of the chemical liquid inlet side attachment 4. Extraction from the first engagement groove 72 is prevented. Further, the second engagement groove 73 abuts against the cover flange 62 of the gas cylinder 6 to be connected, and prevents unnecessary intrusion of the gas cylinder 6. The third engagement groove 74 is slightly inclined to allow the chemical solution inlet side attachment 4 and the gas cylinder side attachment 7 to be tightened. In addition, about the engagement structure comprised with the engagement piece 46 of the above-mentioned chemical | medical solution inlet side attachment 4 can be implement | achieved by the simple mechanical structure formed by integral molding etc. by a synthetic resin material etc.

  According to this embodiment, after the chemical liquid W is introduced into the chemical liquid container 1, the chemical liquid inlet side attachment 4 is connected to the chemical liquid inlet 3 by screwing, and the gas cylinder side attachment 7 is connected to the gas cylinder 6 by fitting. Accordingly, a high degree of airtightness and watertightness are ensured on the chemical liquid container 1 side, and the gas cylinder side attachment 7 is easily connected with one touch on the gas cylinder 6 side.

  Then, as shown in FIG. 2, the entire connection is completed by causing the chemical liquid inlet side attachment 4 and the gas cylinder side attachment 7 to abut and rotate in a state where the nozzle 2 is connected to the chemical injection target T. Moreover, it can isolate | separate by rotation and separation of the chemical | medical solution inlet side attachment 4 and the gas cylinder side attachment 7 of reverse. Therefore, the engagement piece 46 of the chemical solution inlet side attachment 4 constituting the engagement structure and the first engagement groove 72, the second engagement groove 73, and the third engagement groove 74 of the gas cylinder side attachment 7 are precise. The alignment is performed, and the check valve 5 built in the discharge port (stem) 63 of the gas cylinder 6 and the chemical solution inlet side attachment 4 is not damaged. Further, since the gas cylinder-side attachment 7 is not abutted or pulled apart over a long span, the nozzle 2 is not damaged by applying the stress of the gas cylinder 6 to the nozzle 2 as it is.

  As described above, in addition to the illustrated embodiment, it is also possible to incorporate an opening / closing valve in the gas cylinder side attachment 7 by using a type that does not incorporate an opening / closing valve as the gas cylinder 6. About this structure, since the chemical | medical solution inlet side attachment 4 and the gas cylinder side attachment 7 which incorporated the non-return valve are isolate | separated, it can implement | achieve easily.

  The chemical solution injection device according to the present invention can also be applied to a case where an insect repellent, an insecticide, a preservative or the like is injected under pressure to a wooden material of a building, etc., outside a tree that is a living tree.

It is a front view of the decomposition | disassembly state which the best form for implementing the chemical | medical solution injection device which concerns on this invention shows. FIG. 2 shows the use state of FIG. 1, (A) shows a state before connection of the gas cylinder, and (B) shows a connection completion state of the gas cylinder. It is an expansion perspective view of the principal part of FIG. 2 is an enlarged cross-sectional view of the main part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chemical solution container 2 Nozzle 3 Chemical solution inlet 4 Chemical solution inlet side attachment 43 Screw part (mounting structure)
46 Engaging projection 5 Check valve 6 Gas cylinder 7 Gas cylinder side attachment 71 Ring-shaped projection (mounting structure)
72 engaging groove (first)
73 engaging groove (second)
74 Engagement groove (third)
T trees (subjects for chemical injection)
W chemical

Claims (4)

  A chemical container that stores chemicals, a nozzle that is provided at the tip of the chemical container and that is connected to the chemical injection target to which chemicals are injected, and a chemical liquid that is provided at the rear end of the chemical container is placed inside the chemical container. A chemical inlet, an attachment connected to the chemical inlet, a check valve built in the attachment to prevent pressure decay in the chemical container, and a gas that pressurizes the chemical stored in the chemical container is filled into the attachment. In the chemical injection device provided with a gas cylinder that is connected and opens the check valve, the attachment is equipped with a check valve and a structure for mounting to the chemical liquid inlet, and a structure for mounting to the chemical liquid inlet side and the gas cylinder The gas cylinder side attachment and the gas cylinder side attachment are detachable. Liquid injection device.   2. The chemical solution injector according to claim 1, wherein the chemical solution inlet side attachment and the gas cylinder side attachment are detachable by an engagement structure in which an engagement piece and an engagement groove are engaged and disengaged.   3. The chemical injection device according to claim 2, wherein the engagement structure is engaged and disengaged by abutting in the axial direction and rotating in the circumferential direction of the chemical container and the gas cylinder. .   The chemical liquid injector according to any one of claims 1 to 3, wherein the structure for attaching the chemical liquid inlet side attachment to the chemical liquid inlet is a screwed structure, and the structure for attaching the gas cylinder side attachment to the gas cylinder is a fitting structure. A chemical injection device characterized by the above.

Images