JPS6323977Y2 - - Google Patents

Description

[Detailed description of the invention] This invention always displays a scale line at the water inlet above the chemical tank of the spray machine, and
This sprayer can safely and accurately dilute the stock solution to a predetermined concentration of chemical solution by communicating or blocking the switch that moves up and down inside the water inlet to the strainer side, and can also function as a water inlet. This relates to a chemical liquid measuring device.

Conventionally, when spraying a chemical solution on rice, wheat, seedlings, etc. using a manual sprayer, a backpack-powered sprayer, etc., when diluting the stock solution to a predetermined concentration in the chemical tank of the sprayer, (a) the lid of the stock solution bottle was used; (b) Measure the appropriate value based on the scale on the label affixed to the stock solution bottle and inject the stock solution into the tank. There is. However, in the former case (a), the lid of the stock solution bottle is usually small compared to the size of the bottle, so when measuring, a small amount of the stock solution may spill onto your hands and cause unexpected injury. However, in order to obtain the required amount, it is necessary to measure the solution several times, which is both cumbersome and inefficient. Since the drug is directly injected into the chemical tank, even if there is a scale, it is difficult to avoid situations where the amount of injection is excessive or insufficient, making it difficult to properly dilute the undiluted solution to a drug solution of a predetermined concentration. . As mentioned above, it is difficult to say that the conventional method of diluting the stock solution is an appropriate and safe method. Therefore, with the intention of correcting the above-mentioned drawbacks, this invention uses a water inlet that is always set above the chemical liquid tank and a lifting rod that moves up and down inside this water inlet to properly distribute the stock liquid. This is intended to provide a chemical liquid measuring device for a sprayer that can be diluted to a specific concentration, and a switch is formed at the lower end of a lifting rod that rises and lowers inside a water inlet with a scale line set above the chemical tank. It opens and closes to the opening of the strainer held in the chemical solution tank.

Referring to the drawings below, we will describe a case in which an embodiment of this invention is applied to a backpack-type manual sprayer in which a pump equipped with a lever is attached to a chemical solution tank. The water inlet 1 and the discharge part 2 at the upper end of the pump P are fitted into the cover plate C attached to the upper end, and the support 3 is screwed onto the lower inner peripheral edge of the water inlet 1 via the screw a.
A plate panel 4 is sandwiched between the water inlet 1 and the water inlet 1, and a space v having a U-shaped cross section is communicated with a through hole h drilled below the support body 3. A reduced-diameter lifting rod 6 is formed above the switch 5 with a buckle e, and a pair of gripping pieces i and j attached to the middle of the rod hold the plate panel 4, and the plate panel 4 is flattened in the drawing. When firing and energizing in a U-shape,
The opening 7 of the strainer S inserted into the through hole h can be closed with the opening/closing element 5, and the lifting rod 6 is lifted from the position shown in the figure to spring and urge the plate panel 4 into a flattened U-shape. When the switch 5 is opened, the opening 7 can be opened, and a ventilation hole k is provided inside the lifting rod 6, the lower end of which communicates with the opening 7, and the upper end of which communicates with the atmosphere.
is provided. Further, a strainer S is suspended from the lower inner side of the support 3 through a flange f at the periphery of the opening 7, and a mesh n is stretched around the periphery, and several scale lines b are provided at the water inlet 1. Set parallel to the bottom,
The stock solution d to be diluted to a predetermined concentration can be injected up to an appropriate scale line b. This scale line b is water inlet 1
A line may be drawn on the inner peripheral edge (the outer peripheral edge is also acceptable if it is transparent), or a small recess or protrusion may be provided parallel to the bottom. In the figure, g is a bucket, 8 is a hose, 9 is a lever attached to the pump P, 10 is an undiluted solution bottle, and 11
is the handle.

Since this device has the above-mentioned configuration, when diluting the stock solution in the chemical tank T, the handle 11 is pushed down to the position shown in the figure, and the strainer S is moved by the opening/closing element 5 along with the downward elastic force of the plate panel 4. After closing the opening 7 of the undiluted solution bottle 10, the undiluted solution d from the undiluted solution bottle 10 is injected toward the water inlet 1 until it is filled up to the scale line b corresponding to the concentration desired for dilution. Next, the handle 11 is pulled up from the position shown in the figure against the elastic force of the plate panel 4, and the opening 7 is held open by the opening/closing member 5 through the upward elastic force of the plate panel 4. The stock solution d in the inlet 1 passes through the cavity v, passes through the opening 7 of the strainer S, and falls through the mesh n, so it is transferred from the water inlet 1 to the chemical tank T in advance.
The stock solution d is diluted by the water that has flowed in and been stored in the tank to obtain a chemical solution with a predetermined concentration. In this way, it is extremely easy to measure the stock solution to be diluted accurately, and there is no danger of the stock solution spilling on the body, especially on the hands, resulting in serious injury, and there is no risk of injecting too much or too little stock solution. Accurate measurement of stock solution is possible by displaying a scale line at the water inlet and setting a lift rod with a switch to communicate or shut off the water inlet and strainer as necessary. As a result, there is no need to use the lid of the stock solution bottle to measure the stock solution as in the past, and there is no need to prepare a separate measuring device in advance, and there is no fear of losing it. It is possible to eliminate all defects that were difficult to predict accuracy and could even lead to injury, and there is no risk of significantly altering the structure of the chemical tank as a whole, so the price will not increase and the user It has practical benefits such as being extremely convenient and efficient.

Although the above embodiments are applied to a backpack-type manual sprayer, it goes without saying that the present invention can also be applied to other types of sprayers such as a backpack-powered sprayer, a shoulder-mounted sprayer, and a ladle sprayer.

[Brief explanation of the drawing]

The drawing is a longitudinal cross-sectional view of a partially cutaway chemical tank showing the state of use of the product. 1... Water inlet, 5... Opener, 6... Lifting rod,
7...opening, S...strainer, T...chemical tank, b...scale line.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A switch is formed at the lower end of a lifting rod that moves up and down inside the water inlet with a scale line set above the chemical tank, and the switch is connected to a strainer held in the tank. A chemical liquid measuring device for a sprayer that can be opened and closed from the opening. (2) A chemical liquid metering device for a sprayer according to claim 1 of the utility model registration claim, wherein the opening/closing member maintains the opening of the strainer in either a closed or open state.