JP3493366B2 - Connection structure of cartridge type chemical liquid container used for chemical liquid sprayer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a sprayer used for spraying a chemical solution such as an insecticide, a bactericide, a herbicide, a growth regulator and a chemical solution container. . 2. Description of the Related Art Conventionally, a chemical liquid container of a spraying machine is provided integrally with a spraying machine. Each time a chemical liquid runs out, a medicine and water are poured directly from an injection port, and the mixture is diluted and blended. It is meant to be used. [0003] However, in the case of the above-mentioned conventional drug solution container, when the drug and water are poured from the inlet, the drug is easily spilled. It is easy to impair safety by attaching to the body or clothes such as. In addition, in the dilution preparation by pouring the medicine and water directly from the injection port, the dilution amount is easily mistaken, and the useful plants may be damaged. Therefore, there is a problem that preparation for spraying is troublesome and lacks certainty. Further, when cleaning a sprayer to use different types of chemicals, it is difficult to remove and store the previously used chemicals even if they remain. Each time, it is necessary to use up more than necessary and spray out more than necessary, or to wash away the remaining chemicals, causing environmental pollution and wasteful consumption of chemicals. [0005] The present invention has been made in view of such problems of the conventional chemical solution container, and makes it possible to easily and reliably prepare for spraying without causing any adverse effects due to spillage of the drug or dilution error. Another object of the present invention is to prevent the adverse effects of excessive spraying and careless disposal by reducing the amount of remaining chemicals, thereby reducing the burden on aging farmers. [0006] [0007] In order to achieve the above object, the hand that has been taken for this purpose
Referring to FIG. 1 showing an embodiment of the present invention,
A socket B of a main body A of the machine , and a plug C of a chemical solution container D which can be inserted into and extracted from the socket B and serves as an outlet for a chemical solution . Pushing and pulling back is possible,
A sliding valve element 1 that is opened when pushed in, closed when pulled back, and has a locking projection 2a protruding on the inner peripheral side is provided. In the socket B, when a plug C is inserted into the socket B, with plug C is fitted with attachment extensions 3 for opening Nde push the slide valve body 1 is provided, in the connecting protrusions 3, the sliding when inserting the plug C to the socket B Prior to opening the valve 1
The sliding valve body 1 engages with the locking projection 2a of the sliding valve body 1 and pulls back the sliding valve body 1 when the plug C is pulled out from the socket B.
A locking projection 2b is formed so that the engagement with the locking projection 2a of the sliding valve element 1 is released after the sliding valve element 1 is closed. Chemical container D
An air passage 5 connected to the air hole 4 at a position communicating with the inside;
Chemical solution and the chemical path 7 leading to the chemical supply port 6 is open
This is a connection structure of a cartridge type chemical solution container D used for a sprayer . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.
An example will be described. In FIG. 1, A is a main body of the sprayer, B is a socket, C is a plug, and D is a chemical container. As shown in FIG. 2, a chemical solution container D is connected to a main body A in an inverted state, and a plug C is provided at a portion serving as an outlet for the chemical solution. It is preferable that the installation position of the plug C be the lowest part when the chemical solution container D is inverted so that the chemical solution in the chemical solution container D can be used without leaving it. The illustrated main body A is of a shoulder type, but may be of a shoulder type, a hand-held type, or a stationary type. As the chemical liquid container D, a tank-shaped container made of blow-molded synthetic resin is suitable. However, a PET bottle-shaped thin stretch blow-molded container, a bag made of synthetic resin sheet, and a bag made of synthetic resin are used. Is stored in a paper (for example, cardboard) box, a so-called BIB (bag-in-box) can be used as the drug solution container D. It is preferable that the remaining amount of the chemical solution is visible from the outside of the chemical solution container D, and it is more convenient to attach a scale indicating the remaining amount. The plug C portion is similar in appearance to the mouth portion of a general synthetic resin tank, and is usually threaded on its outer periphery, and a cap (not shown) screwed thereto. After being removed, it is connected to the main body A. The plug C has an opening / closing mechanism inside. The opening / closing mechanism will be described below with reference to FIGS. 1, 3 and 4. The inner wall surface of the plug C is formed by a plug inner cylinder 8, and the upper end of the plug inner cylinder 8 has a chemical solution container D
Has been extended into. Notches 9 are formed at appropriate intervals in the upper end portion of the plug inner cylinder 8 projecting into the chemical solution container. At the upper end of the plug inner cylinder 8, a stopper 10 protruding inward is formed. This stopper 1
Numeral 0 is for preventing a sliding valve element 1 described later from being excessively pushed in and falling into the chemical solution container D. The plug C is connected to a socket B of a main body A described later.
The plug C is provided with a sliding valve body 1 in the plug C, which can be pushed and pulled back in a direction of inserting and pulling out the plug C with respect to the socket B (hereinafter, referred to as “vertical direction”). ing. The packing 11 seals between the sliding valve body 1 and the inner wall surface of the plug C (the inner wall surface of the plug inner cylinder 8). At the upper end of the sliding valve element 1, there is formed a flange portion 12 protruding to the outer peripheral side, and this flange portion 12 projects into a cutout 9 formed at the upper end portion of the plug inner cylinder 8. . Therefore, the sliding valve element 1 is slidable up and down within a range restricted by the lower end of the notch 9 and the stopper 10. On the inner peripheral side of the lower end of the sliding valve element 1, a locking projection 2a protrudes. The locking projection 2a is engaged with a locking projection 2b of a connecting projection 3 provided on the socket B described later. Also, slightly above the locking projection 2a,
The receiving projection 13 protrudes downward. At the center of the socket B, the lower end is sealed by a packing 14 so that the connecting projection 3 is directed upward.
Is formed. A packing 15 is provided on the outer periphery of the connection protruding portion 3, and the above-described plug C is fitted in a sealed state by this. The center of the connecting projection 3 projects further upward, and at the upper end thereof is formed a locking projection 2b which engages with the above-described locking projection 2a on the plug C side. At least one of the locking projections 2a and 2b is preferably made of a flexible material such as rubber in order to adjust the engagement and release of the two to an appropriate strength. An air hole 4 and a chemical solution supply port 6 are formed on the lower surface of the socket B, and an air path 5 connected to the air hole 4 and a chemical solution path connected to the chemical solution supply port 6 are formed in the connecting protrusion 3. 7 are formed respectively. The air passage 5 and the chemical solution passage 7 are each opened upward from the connecting projection 3. At the opening of the air passage 5, a check valve 16 in the form of a pipe mouth is provided. Next, the attachment / detachment of the chemical solution container D by the plug C and the socket B will be described. In the state shown in FIG. 1, the two are separated from each other, and the plug C is inserted into the socket B from this state. The state shown in FIG. 3 is a state in which the plug C is almost half inserted into the socket B. Plug C
And the connecting protrusion 3 of the socket B are fitted via the packing 15, and the upper end of the connecting protrusion 3 is
3 is in contact. In this state, the sliding valve element 1 provided in the plug C is not slid and is at the initial position. Next, the plug C is further connected to the socket B.
As shown in FIG. 4, the plug C is further deeply fitted into the connecting projection 3 and the sliding valve body 1 in which the receiving projection 13 is in contact with the upper end of the connecting projection 3 moves upward. When pushed, it slides upward in the plug C. In the present embodiment, the sliding valve element 1 is pushed in by bringing the receiving projection 13 into contact with the upper end of the connecting projection 3. May be brought into contact with the shoulder 20 of the connecting projection 3. When the sliding valve body 1 is slid upward, that is, when the sliding valve body 1 is pushed in, the upper end of the sliding valve body 1
It is performed until it comes into contact with 0. Then, the packing 11, which has sealed between the sliding valve element 1 and the plug C, rises to a position corresponding to the notch 9 at the upper end of the plug inner cylinder 8, and the sliding valve element 1 and the plug C
The seal between them is released, and the sliding valve body 1 is opened. When the sliding valve element 1 is opened, the air from the air hole 4 passes through the gap between the locking projections 2a and 2b from the air path 5 via the check valve 16, and is sealed by the packing 11. It flows into the drug solution container D from the notch 9 that has not been cut. Along with this, the chemical solution in the chemical solution container D flows out of the chemical solution supply port 6 through the notch 9 through the chemical solution path 7, and is used for spraying by the sprayer as the main body A. At this time, if the check valve 16 is provided, it is possible to prevent the chemical liquid from entering the air passage 5 side. On the other hand, the removal of the chemical solution container D is performed by pulling out the plug C from the socket B from the state shown in FIG. When the plug C is half pulled out from the socket B, the state shown in FIG. 3 is obtained. That is, as the plug C is pulled out from the connecting protrusion 3 of the socket B, the locking protrusion 2a of the sliding valve body 1 engages with the locking protrusion 2b of the connecting protrusion 3, so that the sliding valve body 1 It is gradually returned to its original position. Then, the sliding valve element 1 and the plug C again
The space is sealed with a packing 11. When the plug C is further pulled out of the socket B, the sliding valve element 1 is in a state where the flange 12 abuts on the lower end of the notch 9 and cannot slide. Without being moved, the engagement between the locking projections 2a and 2b is released, and the plug C is pulled out from the connecting projection 3 to be in the state shown in FIG. Next, a second embodiment of the present invention will be described with reference to FIGS. In the plug C, a sliding valve element 1 in the form of a prone container is provided.
However, it is slidable in the up and down direction, and is fitted in a state where the space between the plug C and the plug C is sealed. The sliding valve element 1 has a window 17 on the peripheral surface, and a locking projection 2a is formed on the inner peripheral side at the lower end.
In addition, cuts 18 are formed at appropriate intervals from the lower end of the sliding valve element 1 to the middle part. This cut 18
Is for changing the diameter of the opening at the lower end of the sliding valve element 1. A flange 12 is formed on the outer periphery of the upper part of the sliding valve element 1 and is in contact with the inner peripheral surface of the plug C. This flange portion 12 may be continuous or intermittent in the circumferential direction as long as it protrudes outward from the inner diameter of the plug C. Further, by making the diameter of the upper outer periphery of the sliding valve element 1 larger than the inner diameter of the plug C, the flange 12 can be used instead. A projecting portion 2 is provided on the outer peripheral side of the lower end portion of the sliding valve body 1.
1 is meshed with a step portion 22 formed on the inner peripheral surface of the plug C. The socket B is substantially the same as that of the first embodiment described above, but seals around the opening of the socket B between the outer periphery of the plug C when the plug C is inserted. A state in which an annular packing 23 is provided, a point in which a shoulder 20 is formed to be inclined from above in the center direction, and a state in which an air passage 5 and a chemical solution passage 7 penetrate the bottom of a socket B and stand a pipe. The main difference is that the upper end of the chemical liquid path 7 is covered with a filter 19. 2b is a locking projection, 16 is a check valve, 15
Is a packing, 4 is an air hole, and 6 is a chemical solution supply port, which have the same functions as those in the first embodiment. The connection in this embodiment is performed by inserting the plug C into the socket B from the state shown in FIG. FIG. 6 shows a state in which the plug C is half inserted into the socket B. The plug C is inserted into the annular packing 23, and is fitted to the connecting projection 3 via the packing 15. In addition, the sliding valve element 1
Is in contact with the shoulder 20 of the connecting projection 3. In this state, the sliding valve element 1 has not yet been slid, and is at the initial position. FIG. 7 shows a state where the plug C is further inserted and the sliding valve element 1 is slid and pushed. That is, when the plug C is further inserted from the state shown in FIG. 6, the lower end of the sliding valve body 1 is pushed toward the center along the inclination of the shoulder portion 20 to reduce its diameter. The protruding portion 21 on the outer peripheral end of the lower end of the plug C is disengaged from the step 22 on the inner peripheral surface of the plug C, and the plug C is fitted further deeply with the connecting protrusion 3, and the sliding valve is fitted to the locking protrusion 2 a of the connecting protrusion 3 The locking projections 2a of the body 1 mesh with each other. Along with this, the sliding valve element 1 whose lower end abuts on the bottom of the shoulder portion 20 of the connecting projection 3 slides upward and is pushed in. Projecting portion 2 on outer peripheral side of lower end portion of sliding valve element 1
The engagement of the step 1 with the step 22 on the inner peripheral surface of the plug C provides a response when released as described above.
It is preferable to provide them, since the insertion state can be understood by responding. When the sliding valve element 1 is pushed in, its window 1
7 protrudes from the plug C into the chemical solution container D, and the sliding valve element 1
Is released. When the sliding valve body 1 is opened, the air hole 4
Air flows into the chemical solution container D via the air passage 5, the check valve 16 and the window 17. Along with this, the drug solution in the drug solution container D flows out of the drug solution supply port 6 via the window 17, the filter 19 and the drug solution channel 7. On the other hand, removal is performed by pulling out the plug C from the socket B from the state shown in FIG. When the plug C is half pulled out from the socket B, the state shown in FIG. 6 is obtained. That is, as the plug C is pulled out from the connecting projection 3 of the socket B, the locking projection 2a of the sliding valve element 1 is engaged with the locking projection 2a of the connecting projection 3, so that the sliding valve element 1 It is gradually returned to its original position. Then, the window portion 17 of the sliding valve body 1 is again
Is stored in the plug C, the sliding valve element 1 is closed, and the flange 12 on the upper outer periphery of the sliding valve element 1 contacts the inner peripheral surface of the plug C. When the plug C is further pulled out from the socket B, the sliding valve element 1 is in a state in which the flange 12 abuts against the inner peripheral surface of the plug C and cannot slide.
Does not slide, the engagement between the locking projections 2a and 2b is released, and the plug C is pulled out of the connecting projection 3 to be in the state shown in FIG. The present invention is as described above, and has the following effects. (1) It is possible to prepare for spraying simply by replacing the chemical solution container D containing the diluted and prepared chemical solution with the main body A. Therefore, in preparation for spraying, not only do not spill the chemical solution to pollute the surrounding environment or harm the human body, but also do not mistakenly dilute the amount and damage useful plants, and easily and reliably prepare for spraying be able to. (2) The chemical solution container D is automatically opened when connected to the main body and automatically closed when removed.
When different types of chemicals are used, the chemical liquid container D is removed, the main body A is washed, and then a new chemical liquid container D is set, so that spraying can be performed immediately, and the chemical liquid remaining in the removed chemical liquid container D Can also be used by setting the drug solution container D at the time of the next spraying.
Therefore, there is no need to use up the chemical solution every time it is used, and it is possible to prevent environmental pollution and waste of the chemical solution due to excessive spraying for exhausting the chemical solution and washing away the remaining chemical solution for exchanging the chemical solution. (3) The burden of the application of the chemical solution is greatly reduced and the operation error is prevented, which is a great help for agricultural workers who are aging.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a state of a plug and a socket before connection in a first embodiment of the present invention. FIG. 2 is a perspective view of a main body and a chemical solution container according to the first embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing a state of a plug and a socket in the middle of connection according to the first embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing a state of a plug and a socket after connection is completed in the first embodiment of the present invention. FIG. 5 is a longitudinal sectional view showing a state of a plug and a socket before connection according to a second embodiment of the present invention. FIG. 6 is a longitudinal sectional view showing a state of a plug and a socket in the middle of connection according to a second embodiment of the present invention. FIG. 7 is a longitudinal sectional view showing a state of a plug and a socket after connection is completed according to a second embodiment of the present invention. [Description of Signs] A Body B Socket C Plug D Chemical liquid body 1 Sliding valve body 2a, 2b Locking projection 3 Connecting protrusion 4 Air hole 5 Air path 6 Chemical liquid supply port 7 Chemical liquid path 8 Plug inner cylinder 9 Notch 10 Stopper 11 Packing 12 Flange 13 Receiving protrusion 14 Packing 15 Packing 16 Check valve 17 Window 18 Notch 19 Filter 20 Shoulder 21 Projection 22 Step 23 Packing

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Fukaya 201-11-8 Tokumaru, Itabashi-ku, Tokyo 201 (56) References JP-A-3-264013 (JP, A) JP-A-5-270592 (JP, A) JP-A 50-151415 (JP, U) JP-B 60-58804 (JP, B1) JP-B 63-18608 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) B67D 3/02 A01M 7/00 B05B 9/03 B05C 11/10

Claims (1)

(57) [Claims] [Claim 1] It comprises a socket of a main body of a sprayer , and a plug of a chemical solution container which can be inserted into and extracted from the socket and which serves as an outlet for a chemical solution. The plug is capable of being pushed in and pulled out in the plug insertion / removal direction , and is provided with a sliding valve body that is opened at the time of being pushed in, closed at the time of withdrawal, and has a locking projection protruding on the inner peripheral side. , when plugged into the socket, the plug is fitted with attachment extensions for opening Nde push the sliding valve body is provided, in the connecting protrusions, inserting the plug into the socket Kakaritome突of sometimes engages with the locking projection of the slide valve body prior to the opening of the sliding valve body, moreover slide valve body after closing pull back the sliding valve when pulling the plug from the socket A locking projection for releasing the engagement with the liquid medicine container is formed. Further, the connecting projection has an air passage leading to an air hole at a position communicating with the inside of the liquid medicine container when the sliding valve body is opened, and a liquid medicine. A connecting structure for a cartridge type chemical solution container used for a chemical solution spraying machine, characterized in that a chemical solution path leading to a supply port is opened.