JPH0574422B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides powder and
Concerning liquid power spreader.

(Prior Art) As this type of powder/liquid power spreader, for example, the one described in Japanese Utility Model Publication No. 58-27785 is known. This power spreader can be used for powder and liquid by replacing the valve installed at the bottom of the tank with one for powder and one for liquid.

(Problems to be solved by the invention) In the above-mentioned conventional powder/liquid power spreader,
When replacing valves for powder and liquid, the entire valve shaft must be replaced, and the chemical tank and wind turbine chamber must be separated each time, making the replacement work extremely troublesome.

Furthermore, when changing the type of medicine, the inside of the tank must be washed with water, but the conventional type has a structure that makes it difficult to wash with water.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a powder/liquid power spreader that can be easily switched between powder and liquid use and can also be washed with water.

(Means for solving the problems) In order to achieve the above object, the present invention takes the following measures. That is, the present invention is characterized in that a liquid outlet is provided at the bottom of a powder/liquid tank having a lid that can be opened and closed at the top, and a recess with an upward opening and a circular periphery is provided at the bottom. A powder outlet is formed in the recess, and a cylindrical body is provided in the center of the recess, projecting upward from a circular periphery of the recess, and the cylinder communicates between the wind turbine chamber and the inside of the tank. A valve shaft is provided at the axial center of the cylinder so as to be movable up and down, and the valve shaft abuts the upper end of the valve shaft so as to be able to come into contact with and separate from the inner surface that covers the upper part of the cylinder with a predetermined gap and the circular periphery of the recess. A powder valve having a tapered outer surface, a cap body that covers and seals the upper opening of the cylinder body and the recess opening, and a conduit connected to the cap body and guiding compressed air from the cylinder body to the top of the tank. The liquid cap and the cleaning stopper that seals the upper opening of the cylinder can be attached interchangeably.

(Function) According to the present invention, by opening the lid at the top of the tank, the powder valve, liquid cap, and cleaning stopper can be replaced from the opening at the top of the tank.
This replacement is carried out by simply attaching and removing one of the above three to the upper end of the valve shaft.

When a powder valve is installed, the tank stores powdered medicine. Compressed air from the wind turbine chamber passes through the cylinder and is supplied into the tank from the top of the cylinder. At this time, since the upper part of the cylinder is covered with a powder valve, the compressed air is dispersed vertically and horizontally through the gap between the outer peripheral surface of the cylinder and the inner surface of the valve, and is guided into the tank. A part of the air flow is used for stirring the medicine in the tank, and another part is used for transporting the medicine from the powder outlet in the recess.
The medicine discharged from the powder outlet merges with the air blown from the wind turbine chamber and is ejected from the nozzle.

When a liquid cap is attached in place of the powder valve, liquid medicine is stored in the tank. In this case, the concave portion and the cylindrical portion are completely sealed by the cap, so that the drug will not enter these portions. The compressed air in the wind turbine room is led through a conduit to the top of the tank, creating high pressure inside the tank. By opening the liquid outlet, the chemical liquid in the tank is pumped and sprayed from the nozzle at the tip.

Next, when washing the tank with water, a washing stopper is attached to the valve shaft and the upper opening of the cylinder is sealed. The inside of the tank can be cleaned by filling the tank with water and discharging the water from the recess to the outside through the powder outlet.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 6, the powder/liquid power spreader 1 according to the present invention is a shoulder-carrying type, and is mainly composed of a wind turbine casing 2, an engine 3, a powder/liquid tank 4, a blow pipe 5, etc. .

As shown in the details of the power spreader 1 in FIG. 1, the wind turbine casing 2 is formed in a spiral shape, the inside of which is a wind turbine chamber 6, and a wind turbine 7 is rotatably installed in the wind turbine chamber 6. It is provided. This windmill 7
is rotationally driven by the engine 3.

An opening 8 communicating with the wind turbine chamber 6 is provided on one side of the wind turbine casing 2, and the blower pipe 5 is detachably attached to the opening 8. Further, an opening 9 communicating with the wind turbine chamber 6 is also provided in the upper part of the wind turbine casing 2, and a valve seat body 10 is attached to the opening 9. On the upper surface of this valve seat body 10, the lower end portion of the powder/liquid tank 4 is mounted and fixed to form a tank bottom portion 11.

A drug inlet 1 with an upward opening is provided at the top of the tank 4.
2 is opened, and the inlet 12 is covered with a lid 13 so as to be openable and closable. The lower end of the tank 4 is formed into a cylindrical shape, and a liquid outlet 14 is formed on one side thereof, and the outlet 14 is covered with a cap 15 which can be opened and closed. The lower part of this tank 4 and the valve seat body 10
The wind turbine casing 2 and the wind turbine casing 2 are fastened together with bolts 16.

A recess 17 with an upward opening is formed in the center of the valve seat body 10 constituting the tank bottom 11, and a powder outlet 18 is formed within the recess 17. A powder guide tube 19 is detachably attached to the end of the powder outlet 18, and the tip of the powder guide tube 19 enters the blower tube 5 and merges with the blower passage in the blower tube 5. . A spray device 20 is provided at the tip of this blow pipe 5 (see FIG. 6).

The opening periphery of the recess 17 of the valve seat body 10 is formed into a circular periphery 21, and a cylindrical body 22 is disposed at the center of the circular periphery. The lower part of this cylinder 22 is a recess 17
The upper part of the cylindrical body 22 protrudes upwardly from the circular periphery 21 through the bottom of the cylindrical body 22 . Thus, the upper tank 4 and the lower wind turbine chamber 6 are communicated with each other by the cylinder body 22, and the wind generated by the wind turbine 7 passes through the cylinder body 22 and into the tank 4.
supplied within. A notch 23 that opens upwind is formed at the lower end of the cylinder 22 so that the generated wind can be smoothly introduced into the cylinder 22.

As shown in FIG. 3, a slit 24 is provided at the upper end of the cylindrical body 22, and the slit 24 is surrounded by a cylindrical peripheral surface 25 at the lower end of the tank 4 at a predetermined interval.

A valve shaft 26 having vertically lower axes is provided at the axial center of the cylindrical body 22 so as to be movable in the vertical direction. The lower end of this valve shaft 26 is connected to the lever body 2.
7, and by swinging the lever body 27 from the outside, the valve shaft 26 moves up and down. This lever body 26 faces the wind turbine chamber 6 and is isolated from the inside of the tank 4 by the valve seat body 10.

The upper end of the valve shaft 26 projects upward from the upper end surface of the cylindrical body 22, and a screw 28 is formed in the projection. A powder valve 29 is detachably fixed to the upper end of the valve shaft 26 via a nut 30.

The powder valve 29 has an inner surface 3 that covers the upper outer peripheral surface and the upper end surface of the cylinder 22 with a predetermined gap.
1, and a tapered outer surface 32 that abuts the circular periphery 21 of the recess 17 so as to be able to move toward and away from it.

As shown in FIG. 1, when the valve shaft 26 is moved upward, the lower end edge of the powder valve 29
The compressed air from the wind turbine chamber 6 is supplied into the tank 4 from the upper end opening of the cylinder body 22 and the slit 24 through the cylinder body 22. At this time, the upper end of the cylinder body 22 The compressed air from the opening is regulated by the inner surface of the powder valve 29, diverts its flow downward, becomes a downward flow, and is discharged to the bottom of the tank. The powder is transferred to the powder outlet 18 in the
The medicine 33 is pushed out from the inside.

On the other hand, the compressed air discharged from the slit 24 collides with the cylindrical circumferential surface 25 at the bottom of the tank 4, changes its direction in the circumferential direction and upward/downward directions, and agitates the medicine 33 in the tank 4.

As mentioned above, the powder valve 29 divides the compressed air into two parts, one for transporting the powder and the other for agitating the powder.
3 to the powder introduction pipe 19.

On the other hand, when the valve shaft 26 is moved downward, the gap between the tapered outer surface 32 and the circular peripheral edge 21 becomes gradually smaller, and the amount of the drug 33 supplied to the powder introduction tube 19 is reduced.

As shown in FIG. 2, when the powder valve 29 is positioned at the lowest position, the tapered outer surface 32 and the circular peripheral edge 2
1 are in contact with each other, the inside of the tank 4 and the inside of the recess 17 are completely isolated, and the compressed air supplied from the cylindrical body 22 is discharged to the powder introduction pipe 19 without being supplied into the tank 4, and the inside of the tank 4 is completely isolated. The drug will no longer be sprayed.

In the closed state of the valve shown in FIG. 2, the tapered outer surface 32 and the circular peripheral edge 21 are in line contact, so compared to surface contact, even if the powder of the drug 33 is large or fine, Complete sealing is possible.

In the case shown in FIG. 4, a liquid medicine 34 is used instead of the powder medicine 33, and the powder valve 29 is removed from the valve shaft 26, and a liquid cap is used instead. 35 is attached.

This liquid cap 35 includes a cap body 36 that is detachably attached to the valve shaft 26 via a nut 30, and a conduit 37 that is connected to the cap body 36 and guides compressed air from the cylinder body 22 to the top of the tank 4. It consists of

The cap body 36 covers the upper part of the cylindrical body 22, and its lower end periphery abuts the upper end surface of the valve seat body 10, sealing the recess 17 and the cylindrical body 22. The recess 17 is sealed by a packing 38. A check valve 39 is attached to the upper end of the conduit 37 to prevent the medicine 34 inside from flowing back out from the tip of the conduit 37 when the tank 4 is tilted.

In the case of chemical liquid spraying, cap 1 of the liquid outlet 14
5 and attach the hose 40 to the outlet 14. The tip of this hose 40 is connected to the spray device 20. The compressed air in the wind turbine chamber 6 is thus supplied through the cylinder 22 into the cap 36 and further through the conduit 37 to the top of the tank 4 to pressurize the tank 4. The drug 34 in the pressurized tank 4 is supplied from the liquid outlet 14 through the hose 40 to the spray device and sprayed.

The case shown in FIG. 5 is for cleaning, in which the powder valve 29 or the liquid cap 35 is removed from the valve shaft 26, and a cleaning plug 41 is attached in its place. This plug 41 seals the opening at the upper end of the cylinder 22 and the slit 24. When the tank 4 is washed with water, a cap 15 is attached to the liquid outlet 14, and the tip of the powder guide pipe 19 is connected to the blower pipe 5.
The liquid is removed from the tank, supplied into the tank 4, and the tank 4 is washed with water.

In addition, the above-mentioned powder valve 29 and liquid cap 3
5 and the cleaning stopper 41 are replaced through the drug inlet 12 at the top of the tank 4.

7 to 12 are other embodiments of the present invention, in which the structure of the powder valve is different from the above-described embodiment. That is, in this embodiment, a ventilation hole 43 is provided at the top of the powder valve 42, and the ventilation hole 43 can be opened and closed by an auxiliary valve 44. This auxiliary valve 44 is made of a spring steel plate and has three legs 4 as shown in FIG.
5, and the leg 45 abuts against the top surface of the powder valve 42 and is prevented from coming off by a nut 30.

As shown in FIG. 7, when the valve is open, the auxiliary valve 44 opens the vent hole 43 and supplies compressed air to the vent hole 43.
The powder is ejected upward from the top to effectively stir the powder. In the closed state, the vent hole 43 is completely closed as shown in FIG.

In addition, in these FIGS. 7-11, the slit is not provided in the upper part of the cylinder 22.

Incidentally, FIG. 12 shows the flushing plug 46 fitted into the opening of the cylinder 22.

Note that the present invention is not limited to the above embodiments.

(Effects of the Invention) According to the present invention, since the powder valve, liquid cap, or cleaning stopper can be freely replaced on the valve shaft, powder/liquid conversion can be performed extremely easily.

[Brief explanation of the drawing]

Fig. 1 is a sectional view for powder showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is a perspective view showing compressed air flow, and Fig. 4 is a sectional view for liquid. , FIG. 5 is a sectional view for cleaning, FIG. 6 is a schematic diagram showing the overall configuration, FIG. 7 is a sectional view for powder showing another embodiment of the present invention, and FIG. 8 is a sectional view of the same in the closed state. A sectional view showing,
FIG. 9 is an enlarged sectional view of the same essential parts, FIG. 10 is a plan view of the auxiliary valve, FIG. 11 is a sectional view taken along the line XI--XI of FIG. 7, and FIG. 12 is a sectional view for cleaning. 1...Power spreader, 4...Powder/liquid tank,
13... Lid, 14... Liquid outlet, 17... Recess, 18... Powder outlet, 21... Circular periphery, 22
... cylinder body, 26 ... valve shaft, 29 ... valve for powder, 35 ... cap for liquid, 41 ... plug for cleaning.

Claims (1)

[Claims] 1. A liquid outlet is provided at the bottom of a powder/liquid tank that has a cover that can be opened and closed at the top, and a recess with a circular periphery and an upward opening is provided at the bottom, and a powder outlet is formed in the recess. A cylindrical body is provided in the center of the concave portion and protrudes upward from the circular periphery of the concave portion, the cylindrical body communicates between the wind turbine chamber and the inside of the tank, and a valve shaft is provided at the axial center of the cylindrical body. A powder valve is provided that is movable up and down, and has an inner surface that covers the upper part of the cylindrical body with a predetermined gap at the upper end of the valve shaft, and a tapered outer surface that contacts the circular periphery of the recess so as to be able to come into contact with and separate from it. , a liquid cap consisting of a cap body that covers and seals the upper opening of the cylinder and the recess opening, and a conduit connected to the cap body that guides compressed air from the cylinder to the top of the tank; and an upper opening of the cylinder. A power spreader for both powder and liquid use, characterized in that a cleaning stopper for sealing the water can be attached replaceably.