JPS5826055Y2 - Chemical water supply device for agricultural spraying equipment - Google Patents

Description

[Detailed description of the invention] This invention uses a jet pump operated by a jet of pressurized water to feed water to be diluted into the chemical liquid tank of a spraying device that sprays chemical liquid from a pump to a nozzle. This relates to improvements to water supply devices that pump water from ponds and other sources.

The purpose of the present invention is to pump diluted water from an aquarium, river, pond, etc. to a chemical tank of a chemical spraying device using the water supply device described above, and after supplying a predetermined amount of water to the chemical tank, When the supply of pressurized water to the nozzle of the jet pump is stopped, dilution water in the chemical tank flows from the chemical tank side toward the jet pump, and at this time, the chemical solution that has been injected into the chemical tank in advance is diluted. The purpose is to solve the problem of dilution with water and backflow into aquariums, rivers, ponds, etc.

Further, the water supply device in the chemical spraying device according to the present invention, which is related to this purpose, has an elbow-shaped nozzle tip to which the nozzle tip of the nozzle is assembled on the bottom surface of the main body of the jet pump that surrounds the nozzle that communicates with the high-pressure pump. A suction port is provided at the lower part of the bottom of the mounting portion, and a foot valve for opening and closing the suction port is interposed between the suction port and the bottom of the nozzle tip mounting portion so as to be able to move up and down. The valve is characterized in that it is equipped with a guide that is always in sliding contact with the suction port and regulates the direction of the vertical movement of the valve.

Next, an example of implementation will be explained in detail according to the drawings.
In the figure, 1 is a chemical liquid tank mounted on the body of a chemical liquid spraying device A such as a speed sprayer that is movable by running wheels 10, B is a water supply source such as a water tank or waterway, and C is a chemical liquid from the water source B. This is a feeding device that feeds dilution water to the tank 1.

The device C is shown in an unfolded state for explanation purposes in FIG. 11, a high pressure pump 3 for supplying high pressure water to the jet pump a, and a water spout of the pump 3 to supply pressure water to the jet pump a. The jet pump a sucks water from the water source B from its water intake port and sends it to the water supply hose 2 by a jet of pressure water supplied from the high-pressure pump 3. Tights that use jet pump a.

belongs to.

The jet pump a, as shown in FIG.
The nozzle 5 has a nozzle tip 50 connected to the nozzle 5. An elbow-shaped nozzle tip mounting member 51 for screwing is arranged in the inner cavity of the main body 6 and integrally molded with the main body 6 by means of brass casting, which is a member forming the main body 6. The nozzle tip 50 is screwed onto the nozzle tip 50, and the horizontal portion of the nozzle tip attachment member 51 connected to the main body 6 is made to protrude from the outer surface of the main body 6 in the shape of a nipple, and the protruding portion 52 is provided with a high pressure. One end of the water supply hose 4 is connected to the water discharge pipe of the pump 3, and the other end of the water supply hose 4 is connected to the water discharge pipe of the pump 3.

Further, the water suction port 8 provided at the bottom of the main body 6 of the jet pump a connects the main body 6 to the nozzle tip mounting member 51.
It is formed of a body part 60 integrally formed with a body part 60, and a hem part 61 that is screwed to the lower end of the body part 60 and extends the main body 6 downward, and a bottom plate provided on the hem part 61, By arranging and opening to face the bottom surface of the nozzle tip mounting member 51, a foot valve 9, which will be described later, is activated in a region from below the bottom surface of the nozzle chip mounting member 51 to the water intake port 8 in the inner cavity of the main body 6. A space W is formed, and a valve seat 80 is formed on the upper surface of the mouth edge of the water intake port 8.
In addition, a guide tube 81 extending downward in a cylindrical shape is provided on the lower surface of the mouth edge.
is equipped.

Reference numeral 9 designates a foot valve that is inserted into the working space W formed at the bottom of the inner cavity of the main body 6 to close the water intake port 8, and has a valve seat 80 on the periphery of the bottom surface. A corresponding gasket 90 is provided, and a comb-shaped guide 91 that is slidably fitted inside the aforementioned guide tube 81 is provided at a portion closer to the inside of the gasket 90. It is installed at such a length that it cannot be removed from the guide tube 81 when its top surface and the bottom surface of the tip mounting member 51 abut each other.

In the illustrated embodiment, 30 is a cock provided on the water discharge pipe of the high-pressure pump 3, 31 is a hose connected to the water suction pipe of the pump 3, and b is a strainer provided to surround the water suction port 8 of the jet pump a. It is.

Next, to explain the function and effect, the water supply device in the pesticide spraying device according to the present invention uses an appropriate high-pressure pump 3 such as the high-pressure pump installed in the body of the pesticide spraying device a or the high-pressure pump of a power sprayer. , its water discharge pipe is connected to the jet pump a through a water supply hose 4, and a hose 31 connected to the water suction pipe of the pump 3 is connected to the chemical tank 1 so as to suck out the remaining liquid in the chemical tank 1. The jet pump a is connected to the water source B, and the water supply hose 2 connected to the spout of the jet pump a is connected to the water inlet 11 of the chemical tank 1. When replenishing dilution water into the jet pump a, pressure water is ejected from the nozzle tip 50 by the operation of the high-pressure pump 3, which causes the main body 6 of the jet pump a to
When the water from the water source B flows into the body from the water inlet 8 and is sent to the tiff user 7, a foot valve 9 is installed at the bottom of the inner cavity of the main body 6 as shown in FIG. , the nozzle tip mounting member 51 is pushed up by the water flow.
When the water supply to the chemical tank 1 reaches a predetermined amount, the operation of the high-pressure pump 3 is stopped or the cock 30 is turned off. When it is closed and the supply of pressure water to the nozzle 5 of the jet pump a is stopped, the inflow of water from the water intake port 8 is stopped, and the foot valve 9 is caused to flow downward from its own weight and from the side of the chemical tank 1. It descends due to the pressure of the coming water,
As shown in FIG. 5, since the water intake port 8 is blocked, the problem of agricultural chemicals flowing back into the water source B from the chemical tank 1 side can be effectively solved. An operating space W is formed below the bottom surface of the nozzle tip mounting member 51 at the bottom of the inner cavity of the nozzle tip mounting member 51, and the valve 9 is accommodated therein, so that the bottom surface of the nozzle tip mounting member 51 holds the valve 9 in the open position. Because of this, the mechanism is simple and installation is easy.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of an embodiment of the device of the present invention, Fig. 2 is a longitudinal cross-sectional side view of the main parts of the same device, Fig. 3 is a partially cutaway front view of the main parts of the same, Figs. The figure is an explanatory diagram of the action. 1... Chemical tank, B... Water source, C.
...Water supply device, a...Jet pump,
2... Water supply hose, 3... High pressure pump, 4... Water supply hose, 5... Nozzle,
50...Nozzle tip, 51...Nozzle tip mounting member, 6...Main body, 7...
・Tiff user, 8...Water intake, W...
... Working space, 9... Foot valve.

Claims (1)

[Scope of utility model registration request] A suction port is provided at the lower part of the bottom of the elbow-shaped nozzle chip attachment part to which the nozzle tip of the nozzle is assembled on the bottom surface of the main body surrounding the nozzle that communicates with the high-pressure pump of the jet pump, and the suction port and the nozzle tip are connected to each other. A foot valve that opens and closes the suction port is interposed between the bottom of the mounting portion and the foot valve is movable up and down, and the foot valve is provided with a guide that constantly slides into contact with the suction port and regulates the direction of the vertical movement of the valve. A chemical water supply device for agricultural spraying equipment that is characterized by: