JPH0353719Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a tank device for a liquid spraying vehicle, and particularly relates to a tank device for a liquid spraying vehicle, and in particular, to the speed at which a chemical solution is stored in the tank and sprayed with a blower device while driving outdoors or on the road.・Related to tank devices for liquid dispersion vehicles such as sprayers.

BACKGROUND TECHNOLOGY A conventional tank device for a liquid spraying vehicle includes a tank body that is mounted on the vehicle body and contains liquid, a lid body that closes an opening formed at the top of the tank body, and a vent hole formed in the lid body. It is made up of.

Problems that the invention aims to solve: With the conventional tank device for liquid spraying vehicles as described above, when a relatively large amount of liquid is stored in the tank body, vibrations and shocks occur while the spraying vehicle is running. There is a problem in that the liquid inside the tank body leaks outside through the vent hole in the lid body and splashes on the machine body and the operator. The present invention has been made to solve such problems.

Means for Solving the Problems The present invention provides a tank device for a liquid spraying vehicle as described above, including a cylindrical wall with an open lower end extending downward from the inner surface of the lid so as to surround the ventilation hole; It is characterized by having an elastic membrane member disposed at the peripheral edge so as to be in sliding contact with the inner circumferential surface of the cylindrical wall.

Effect By configuring as described above, an air chamber surrounded by the lid, the cylindrical wall, and the elastic membrane member is formed,
When dispersing the liquid inside the tank body, the membrane member quickly and smoothly adjusts the air pressure inside and outside the tank body due to changes in the amount of liquid inside the tank body, and also allows the liquid inside the tank body to flow directly to the outside through the vent hole. Prevent leakage.

Embodiment The example shown in FIGS. 1 and 2 is an example in which the present invention is applied to a self-propelled speed sprayer having an internal combustion engine as a driving source, and as shown in FIG. A tank body 2 that stores a chemical solution in
is installed, and a liquid spraying device is installed behind it. The spraying device is configured to spray the chemical solution sprayed from the nozzle 4 into the surrounding area on a high-speed air flow generated by the blower 3.

A circular opening 5 formed in the upper part of the tank body 2 is closed by a lid 6 (FIG. 1). A lever 7 for opening and closing the lid body 6 is connected to the tank body 2 at one end 8.
It extends across the top of the lid 6 and is secured to the opening 5 by a locking device 10 at the other end 9.
is locked in the closed position. A support member 11 that guides and supports the lid 6 has its upper end fixed to the intermediate portion of the lever 7, and extends downward through a hole in the central portion of the lid 6. A compression spring 12 is provided around the support member 11 between the lid 6 and the lever 7 to press the lid 6 away from the lever 7, so that the lever 7 is moved into the locking device 10 as shown in FIG. When the lid 6 is locked in the closed position, the pressing force of the spring 12 presses the peripheral edge of the lid 6 against the tank body around the opening 5, thereby closing the opening 5 with the lid 6. Note that an annular sealing member 13 is attached to the peripheral edge of the lid 6 to ensure the sealing of the opening 5.

A cylindrical wall 14 is integrally provided on the inner surface of the lid 6 so as to surround the support member 11, and the cylindrical wall 14 extends downward and is open at its lower end. A circular elastic membrane member 15 is fixed to the lower end of the support member 11 by a nut 16, and the peripheral edge of the membrane member 15 is in sliding contact with the inner surface of the cylindrical wall 14. In this way, the air chamber 17 is defined by the lid 6, the cylindrical wall 14, and the elastic membrane member 15,
The air chamber 17 communicates with the atmosphere outside the lid 6 through an appropriate number of ventilation holes 18 formed in the central portion of the lid 6 near the support member 11. The central boss portion 19 of the elastic membrane member 15 also acts as a stopper to limit the downward movement of the lid 6 due to the pressing force of the spring 12, and prevents the lid 6 from separating from the support member 11. In addition, the elastic membrane member 15 deforms in response to pressure changes to create a slight gap with the cylindrical wall 14, and communicates the inside of the tank body 2 with the outside via the air chamber 17 and the ventilation hole 18. Normally, the chemical liquid in the tank body 2 does not leak to the outside through the vent hole 18. Note that when the liquid surface ripples greatly, the elastic membrane member 15 is pushed up by the waves and can close the vent hole 18, so that a large amount of the chemical solution does not flow out. It is even more preferable to provide a notch (not shown) in the peripheral edge of the elastic membrane member 15 at a position offset from the ventilation hole 18 and toward the central boss portion 19.

Effects of the Invention The present invention maintains good ventilation inside the tank body, completely prevents leakage of liquid within the tank body, has a simple structure, and is easy to maintain.

[Brief explanation of drawings]

FIG. 1 is an enlarged sectional view of essential parts of an example of a tank device for a liquid spraying vehicle according to the present invention, and FIG. 2 is a side view of the liquid dispersing vehicle. 1... Vehicle body, 2... Tank body, 5... Opening,
6...Lid body, 14...Cylindrical wall, 15...Elastic membrane member, 18...Vent hole.

Claims (1)

[Scope of utility model registration request] In a tank device for a liquid spraying vehicle, the tank body is mounted on a vehicle body and contains a liquid, a lid body that closes an opening formed in an upper part of the tank body, and a ventilation hole formed in the lid body. A cylindrical wall with an open lower end extending downward from the inner surface of the lid body so as to surround the pores, and an elastic membrane member disposed so as to be in sliding contact with the inner peripheral surface of the cylindrical wall at the peripheral edge. A tank device for a liquid spray vehicle, characterized in that it has.