JPS591101B2 - Liquid drug dispensing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dispensing a desired drug solution in a desired amount and at a desired location.

More specifically, it relates to a method for dispensing and dispensing an arbitrary amount of medicinal liquid from an arbitrary distribution valve in a liquid distribution pipe system formed from a plurality of branch pipes connected to a plurality of distribution valves. When spraying chemicals such as pesticides and fertilizers in the form of solutions or suspensions in fields, etc., using a piping system consisting of a group of branch pipes connected to multiple distribution valves connected to sprinklers, water is released from any distribution valve. , it is possible to spray the chemical solution with as little waste of the chemical solution as possible.

As shown in Figure 1, conventional equipment for spraying water and chemical solutions on large fields, etc. includes 1 water pump, 2 chemical tank, 3 chemical pump, and 4 chemical solution pumps.
A liquid distribution pipe system is used, including a chemical liquid meter, 5 water/chemical liquid meter, 6 main pipe, T branch pipe, 8 distribution valve, and 9 drain valve (however, 1, 4, and 5 may be missing). Spraying was carried out in each branch pipe, and there was a disadvantage that there was a large amount of chemical liquid remaining in the pipes in addition to the chemical liquid that was effectively used for spraying, resulting in a large amount of waste of chemical liquid and water.
In addition, large-scale watering and chemical spraying equipment for large fields, etc., are arranged in the most rational manner hydraulically based on the topography of the land from the economic point of view of the piping system, but due to differences in cultivation and cultivation of farmland, etc. Due to differences in usage, it is often necessary to spray chemical solutions in a separate section from the piping system. For example, at a high point on a mountain slope (X in Figure 1), 1, /f62, /f6.
8, /f6.9, /f6.13, magic 14, consideration 19, consideration 20, /$6.24, /f6.28) and low places (X),
6, /f67, A611,
The cultivator of the field of 6.1, X, 2, 3, /f6.8,
The cultivator of fields A6, 11, and A6.12 is B. This is the case when the type, amount, and timing of chemical spraying differs due to differences. In these cases, with conventional methods, it is difficult to spray chemical solutions to arbitrary sections from arbitrary distribution valves, and there is a lot of waste of chemical solution and water, sometimes making it so uneconomical that chemical spraying has to be abandoned. It was even happening.

In contrast, the present invention has the advantage that there is no waste of chemical liquid in the main pipe and branch pipes, and that so-called skipping, in which chemical liquid is sprayed from any non-adjacent distribution valve, can be carried out very easily and with little waste.

The principle of the present invention will be explained in a simplified manner based on FIG.

V in one tube.

is a drain valve provided at the downstream end, and 1, V2, and 3 are distribution valves. The pressure necessary for distributing and transporting the chemical liquid and water is applied from the upstream end of the pipe, and in this example, the chemical liquid is distributed and discharged from the distribution valves 1 and 3, and there is no line from the distribution valve V2. The valve that distributes and dispenses the medicinal solution inside the dispensing valve will hereinafter be referred to as the drug delivery valve. Further, the medicinal solution and the amount of medicinal solution delivered in portions from the drug delivery valves Vl and V3 are respectively M and M3. First, Figure 2 A
Fill the pipe with water W1 as shown below.

Next, as shown in Figure B, release valve V. is opened to drain water, and at the same time, the medicine feeding valve 1 fills and delivers the amount of medicine M1 to be distributed. In this example, it is assumed that the amount of M1 is smaller than the internal volume of the pipe between the drug delivery valve V1 and the next upstream drug delivery valve V3, and water W2 of t, which is this difference, is filled. After that, the medicine delivery valve V3 should deliver the medicine liquid amount M3 in minutes.
Fill it. After that, water W3 is filled. After the process shown in Figure C, this valve V1 is placed at the position of the most downstream drug delivery valve V1 as shown in Figure D.
When the chemical solution M to be delivered reaches the drain valve V.
, and open the most upstream drug delivery valve 3 as shown in Figure E to dispense the drug solution M3 in portions. Immediately after completing delivery of the drug solution M3 in portions, the drug delivery valve 3 is closed, and then, as shown in Figure F, the drug delivery valve V1 is opened to deliver the drug solution M1 in portions. When the delivery of the chemical solution M1 is completed, the tube is filled with water as shown in Figure G and returns to its original state, that is, the state shown in Figure A. The present invention is generally implemented in the piping system shown in FIG. 3 as follows.

That is, in Fig. 3, the branch pipes used to send the internal drug solution of the branch pipes are called drug delivery branch pipes, and depending on the order in which they are used for drug delivery, the first drug delivery branch pipe, the second drug delivery branch pipe, etc. are generally called the nth drug delivery branch pipe. The drug delivery branch pipe used in this order is referred to as the n-th drug delivery branch pipe. The dispensing valve that distributes and distributes the drug solution is called a medicine delivery valve, and the lowest medicine delivery valve of the branch pipe (first medicine delivery branch pipe) that delivers medicine in the first order among the medicine delivery valves is designated as V1, and the medicine delivery valve adjacent to this is referred to as V1. The upstream drug delivery valve is sequentially 1V2, 1V3.
..., and generally the most downstream drug delivery valve of the n-th drug delivery branch pipe is NV, and the most upstream drug delivery valve is NVmax. The amount M of the drug to be delivered by each drug delivery valve is set upstream from the portion M(NVl) of the most downstream drug delivery valve Nvl of each drug delivery branch pipe, and M(NV2), respectively for each drug delivery valve. M (NV3)...
..., M (NVm) ...M (NVmax).

For the same drug delivery branch pipe, let P(NVmnvl) be the internal volume between each drug delivery valve NVm and the most downstream drug delivery valve Nvl, and let P(NVmnvl) be the volume between each drug delivery valve NVm and the most downstream drug delivery valve Nvl. Let the intratubular volume of P(NVmax-NVl) be P(NVmax-NVl).

The branch point between the first drug delivery branch pipe and the second drug delivery branch pipe is J2, and the branch point between the nth drug delivery branch pipe and the next adjacent drug delivery branch pipe (n+1 drug delivery branch pipe) is generally NJn+. In the n drug delivery branch pipe, let P(NJn+1nV,) be the intratubal volume between the most downstream drug delivery valve n1 and the branch point NJn+1, and let P(NJn+1) be the intratubal volume between the most upstream drug delivery valve NVmax and the branch point NJn+1. .

max). The present invention is implemented by the following sequential method.

(1) Select the drug delivery valve that delivers the drug solution in portions, and determine the amount of drug solution that each drug delivery valve should deliver in portions.

Also, fill the main pipe and drug delivery branch pipe with water. (2) Assign an order to the drug delivery branch pipes and program the following operations to be performed in accordance with that order.

Step 1: The most downstream drug delivery valve 1V1 of the first drug delivery branch pipe delivers the amount of drug solution M (1V1) to be delivered.

Step 1-1...If the first drug delivery valve in the first branch,
Intratubular volume P between 1 and the upstream drug delivery valve 1V2 adjacent to the husband
If (1V2-1V,) is less than or equal to M(11), proceed directly to the next step 2 oStep 1-2
...If P(1V2-1V1) is larger than M(1V1), immediately fill the volume of water (this is called filling water, W2-) with the difference between P(,V2-1V1) and M(11). Supply water and proceed to the next step 2.

Step 2: Immediately, the second drug delivery valve, V2, sends the amount of drug solution M (1V2) to be delivered.

Step 2-1...If P(1V3-1V1) is M(1
1), 1W2-,,M (1V2), the process directly proceeds to the next step 3.

Step 2-2...If P(1V3-,V1) becomes M(1
If it is larger than the sum of V1), , W2-1, and M (1V2), the difference in filling water, W3-1, is fed and the process proceeds to step 3.

Step 3: Similar operations are performed sequentially in the upstream direction.

Step 4: By the operation in step 3, the drug liquid amount M (1Vmax
x), and immediately after that, the intratubal volume P (1J2-
1V1) of water, Wj-1, is fed and the process moves to the next step 5.

Step 5: For the second drug delivery branch pipe, perform the steps described above in Step 1.
Perform the same operations as in steps 4 to 4 and proceed to the next step 6. Step 6: From the 3rd drug delivery branch onward, in the same way, for n1 of the nth drug delivery branch, M(NV) is delivered, and then p(N
v2−Nvl)≦M(n1), then M for the next Nv2
(NV2), if P(Nv2-Nvl)〉M(NVl
), then after feeding Nw2-1, feed M (NV2),
Continue the same operation and set NVmax to M (NVmax)
After sending the liquid, reach the branch point NJ of the nth drug delivery branch pipe and the n+1th drug delivery branch pipe.
Intraluminal volume P between n+1 and Nvl (NJn+1-NV
l) amount of water Nwj-1 is sent, and the same operation is performed sequentially up to the most upstream drug delivery valve of the final drug delivery branch pipe, and then immediately inside the pipe from the most upstream drug delivery valve of the final drug delivery branch pipe to the water pump. Pump the volume of water and end the program.

(3) After setting the program, open the drain valve at the end of the first drug delivery branch pipe and send the drug solution and water according to the program.

(4) The first drug solution is the most downstream drug delivery valve 1V of the first drug delivery branch pipe.
1, the drain valve at the end of the branch pipe is closed, and the most upstream drug delivery valve of the branch pipe, Vmax (V4 in FIG. )(
In FIG. 3, M (1V4) is fed.

Immediately after feeding M (1Vmax), close the drug delivery valve 1vmax, then open the adjacent downstream drug delivery valve (V3 in Figure 3), and the amount of drug to be delivered by this valve (V3 in Figure 3). (1V3)
) is delivered. Immediately after the liquid feeding ends, close the valve, and then operate the downstream drug feeding valves in the same way, and when the drug feeding by the most downstream drug feeding valve, V, is completed, move to the second drug feeding branch pipe, and proceed to the second drug feeding branch pipe. The most upstream drug feeding valve 2vmax (V3 in FIG. 3) of the second drug feeding branch pipe is opened to feed a predetermined amount of drug liquid M (2Vmax) (M(2V3) in FIG. 3).

Thereafter, the same operation is performed, and when the most downstream drug delivery valve (2V1) completes drug delivery, the flow moves to the third drug delivery branch pipe, and the same operation is performed for the drug delivery valves sequentially downstream from the most upstream drug delivery valve. (
5) The entire operation ends when the liquid feeding by the most downstream drug feeding valve of the final drug feeding branch pipe is completed.

(6) If the branch pipe is branched from between the drug delivery valves of the drug delivery branch pipe to form the next branch pipe, for example, from between the drug delivery valves Rv4 and Rv3 of the drug delivery branch pipe r in Figure 3. In the case of branching, a predetermined amount of drug liquid M(
r1) After liquid feeding, the intraluminal volume P (RJr+
1 to r1) of water Rwj−1 is sent, and the next r+1
By moving to the drug delivery branch, the object of the present invention can be achieved.

The program of the present invention is normally set and operated by an electrical or mechanical device, but the present invention does not necessarily require these devices, and the program of the present invention can be manually operated according to the logic of the present program. The purpose is to be achieved.

[Brief explanation of the drawing]

FIG. 1 shows an example of a field irrigation piping system in which a chemical solution is sent from an arbitrary valve in a piping system consisting of a large number of branch pipes connected to a large number of valves. 1... Water pump, 2... Chemical tank, 3.
... Chemical liquid pump, 4 ... Chemical liquid measuring device, 5
...Water/chemical liquid measuring device, 6...Main pipe, 7
・・・Branch pipe (A branch pipe that sends a drug solution based on a program is called a drug delivery branch pipe), 8... Distribution valve (A distribution valve that sends a drug solution based on a program is called a drug delivery valve)
, 9...Drainage valve, the area surrounded by dotted lines or chain lines represents the difference in crop type or cultivator. FIG. 2 is a diagram showing the principle of implementing the present invention. A, B...F, G are state diagrams inside the pipe showing the state and movement of the chemical solution and water filled in the pipe, and VO is the drain valve;
1, 2, 3 are distribution valves (inner Vl, V3 are drug delivery valves), Wl,
W2 and W3 are water, and Ml and M2 are chemical solutions. Figure 3 shows the branch pipes and valves through which the medicinal solution is actually sent based on the program.
,, 1V2, 1V3, 1V4 are the valves actually used for distributing and distributing the drug solution in the first drug delivery branch pipe in order from the downstream example, and n is a general symbol for the order of the drug delivery branch pipe, m is an integer greater than 2 and is the number of the drug delivery valve counted from the most downstream drug delivery valve in the same drug delivery branch pipe, Max is a symbol indicating that it is the most upstream drug delivery valve in each drug delivery branch pipe, and J is the branch. 1J2 is the branch point between the first drug delivery branch pipe and the second drug delivery branch pipe, NJn+1 is a symbol that generally indicates the branch point between the nth drug delivery branch pipe and the n+1th drug delivery branch pipe, and RJrfl is the rth drug delivery branch pipe.
The branch point of the r+1th drug delivery branch pipe that branches from the middle of the drug delivery valves Rv4 and Rv3 of the drug delivery branch pipe is shown.

Claims (1)

[Claims] 1. In a piping system equipped with multiple distribution valves for distributing chemical solutions and a drain valve at the downstream end, the most downstream of the distributing valves for distributing chemical solutions (hereinafter referred to as "medication delivery valve") The amount of chemical liquid to be distributed by the valve is first filled from the upstream end of the piping, and after the upstream drug delivery valve is filled with the amount of chemical liquid to be distributed and distributed sequentially, the drain valve is opened to allow the liquid to flow downstream. When the chemical solution to be distributed and distributed by the drug delivery valve arrives at the most downstream drug delivery valve, the drain valve is closed, and while water or drug solution is pressurized from the upstream end of the pipe, The medicine delivery valve is opened to deliver a predetermined amount of the drug solution in portions, and then the drug delivery valve is closed, and the drug delivery valve sequentially delivers the amount of drug solution to be delivered in portions from the downstream drug delivery valve. Method of drug dispensing.