JPS596921Y2 - Chemical solution continuous mixing and diluting device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device that continuously dilutes and mixes agricultural chemicals such as pesticides and fertilizers to a predetermined concentration, and is particularly suitable for automatic chemical spraying or automatic irrigation systems in farms. This invention relates to a chemical liquid mixing and diluting device that can be easily installed and used.

Recently, a method has become popular in which pipelines are installed in farmland and irrigation, fertilization, pest control, etc. are automatically carried out by this pipeline. However, it is extremely important for crop growth to uniformly dilute and mix the correct concentration before spraying.

Furthermore, it is desirable that the dilution and mixing can be carried out efficiently without requiring manual labor.

In response to such demands, various methods and devices have been developed to automate and save labor in the mixing and dilution operation.

For example, as shown in Fig. 1, a chemical injection device 2 and a flowmeter 3 are installed in a liquid supply pipe 1 laid from a water source A to a field B, and each time a certain flow rate passes through, the The total 3 detects this and issues a signal, and this signal activates the drug injection device 2 to inject a certain amount of drug 4 from the drug injection tube 5 into the liquid delivery line 1, and sends this drug solution. This is a method of spraying from a branch pipe 6 using a sprayer 7.

However, in this example, if the pipe line 1 after the drug injection device 2 is long, the medicine 4 and the liquid being fed are mixed well, but if it is short, the mixture is not uniform as shown in a-e in Fig. 1. is not being done enough.

The present invention is effective when used in conjunction with such a device that intermittently supplies drugs, etc. into the liquid feeding pipe, and is effective in eliminating unevenness in drug concentration that tends to occur in the direction of flow and achieving uniform mixing and dilution. It is a suitable device.

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

FIG. 2 shows an embodiment of the present invention, in which an opening 81 of a chemical liquid supply pipe 8 is provided in the liquid sending pipe line 1 facing downstream, and a plurality of chemical liquid supply pipes are provided on the side wall of the chemical liquid supply pipe 8. Liquid guide holes 82 are bored at appropriate intervals, and the chemical liquid supply pipe 8 gradually widens toward the opening 81.

Further, at the upper end of the chemical liquid supply pipe 8, a chemical liquid injection pipe 5 shown in FIG.
It is connected to the.

Now, when the drug solution supply tube 8 is filled with one dose of the drug solution 4 from the injection tube 5, the diluted liquid in the liquid supply pipe line 1 flows into the drug solution supply tube 8 through each liquid guide hole 82, and the drug solution 4 is sequentially filled. It flows out of the tube while being diluted.

Eventually, when most of the chemical liquid 4 in the chemical liquid supply pipe 8 has flowed out, the chemical liquid 4 is again supplied from the chemical liquid injection device 2 through the injection pipe 5 into the supply pipe 8, and the same process is repeated thereafter.

Here, the liquid introduction hole 82 formed in the chemical liquid supply pipe 8 needs to be positioned and shaped so as to enhance the dilution effect of the diluent such as water flowing through the liquid introduction hole 82 and to reduce energy loss. However, it is particularly preferable to arrange them in a staggered manner, for example, from the upstream side to the downstream side of the drug solution supply pipe 8, and to provide the diluting solution in a spiral manner.

In this embodiment, the chemical liquid supply pipe 8 gradually widens toward the opening 81, so that the diluent can easily enter into the chemical liquid supply pipe 8 through the liquid guide hole 82.

In addition, the liquid guide holes 82 are provided at a distance in the flow direction, and the chemical solution 4 is gradually diluted by the diluting liquid that sequentially flows in, so that uniform mixing and dilution can be performed.

In the embodiment shown in FIG. 2 of the present application, the chemical liquid supply pipe 8 gradually widens toward the opening 81, but this is not necessarily necessary and the diameter may remain the same.

Further, the introduction hole 82 may naturally be formed in the upstream bent side wall of the chemical liquid supply pipe 8.

FIG. 3 shows another embodiment of the present invention, in which the chemical supply pipe 9 provided in the liquid supply pipe 1 is sequentially bent, and a liquid guide {L92 is provided on the side wall facing the upstream side of each bent part. Each hole was drilled.

FIG. 4 is a view taken along the line IV-IV.

In this embodiment, when the first stage 93 of the chemical supply pipe 9 is filled with the chemical 4, the diluted liquid in the liquid supply pipe 1 is transferred to the first stage 93.
The chemical liquid 4 flows into the liquid guide hole 92 formed on the upstream side of the chemical liquid 4, and flows to the second stage 94 of the chemical liquid supply pipe while diluting the chemical liquid 4.

In this second stage 94, the chemical solution 4 is diluted by the diluent flowing in from the liquid introducing holes 92 and flows to the third stage. It comes out of Section 91.

At this time, the flow direction changes for each stage, and each liquid introducing hole 9
Since the diluent flows in from 2, the chemical solution 4 is sufficiently mixed and diluted.

Since the present invention is a continuous drug solution mixing and diluting device having the structure as described above, by using this device, even if the drug is intermittently injected by the drug injection device, uneven mixing will not occur as in the conventional method. Uniform mixing and dilution is possible.

Furthermore, this device has various advantages such as an extremely simple structure and low manufacturing cost.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a chemical liquid spraying device, Fig. 2 is an embodiment of the chemical liquid continuous mixing and diluting device of the present invention, Fig. 3 is another embodiment of the chemical liquid continuous mixing and diluting device of the present invention, and Fig. 4 is a third embodiment of the chemical liquid continuous mixing and diluting device of the present invention. Diagram IV-IV
It is an arrow view. 1...Liquid feeding pipe, 8, 9...Medical solution supply pipe, 81.91...Opening, 82.92...
...Liquid guide hole.

Claims (1)

[Scope of claim for utility model registration] 1. A continuous mixing and diluting device for chemical liquids, in which an opening of a chemical liquid supply pipe is provided in a liquid sending pipeline so as to face downstream, and a plurality of liquid introducing holes are bored at appropriate intervals in a side wall of the chemical liquid supply pipe. 2. The chemical liquid continuous mixing and diluting device according to claim 1, wherein the chemical liquid supply pipe has a shape that gradually expands toward the opening. 3. 2. The continuous mixing and diluting device for chemical liquids according to claim 1, wherein the chemical liquid supply pipe is bent in various ways, and liquid guide holes are formed in the side wall facing upstream of each bent part.