JPS5853579B2 - Powder/liquid type spreader - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spraying machine for both powder and liquid, which facilitates handling when switching between powder and liquid spraying operations, and improves the efficiency of the spraying operation. The purpose is to

When distributing powder, the powder at the bottom of the tank is stirred by compressed air, and when spraying liquid, the tank is pressurized with compressed air and the liquid is sent. As shown in Fig. 1, this type of spreader is well-known, but conventional spreaders of this type require very complicated handling when switching between powder and liquid. However, it had the disadvantage of lacking workability.

FIG. 1 is a sectional view showing a conventional backpack-type spreader. In the figure, 1 is the main body of the spreader, 2 is a blower fan, and 3 is a fan case.

Reference numeral 4 denotes a tank for storing powder, granules, liquid, etc., which consists of an upper body 5 and a lower body 6, and is mounted on the sprayer body 1.

Reference numeral I designates a powder outlet formed in the lower body 6, which is configured to send the powder to the dust dispersion pipe 9 side by the ejector action of compressed air supplied from the blower fan 2 through the air introduction pipe 8. has been done.

Reference numeral 10 denotes an opening/closing member for opening/closing the powder/grain material removal lower part, which is supported by a rotating shaft 11 inserted into and supported by the lower main body 6, and can be opened/closed via a link 12 and a connecting rod 13.

The opening/closing member 10 is formed with an injection hole 14 on the side facing the powder extraction lower when the opening/closing member 10 is in the closed state.
This is for stirring the powder and granular material at the bottom of the tank 4 by compressed air supplied through the second blower pipe IT and the second blower pipe IT.

Note that the second blow pipe 1T is detachable from the connecting portion 18 of the opening/closing member 10.

Reference numeral 19 denotes a compressed air supply pipe that supplies compressed air for pressurization into the tank 4, which has a check valve 20, and is connected to the liquid sending pipe 21 when distributing powder and to the second blowing pipe 17 when distributing liquid. be done.

The liquid feeding pipe 21 is connected to a connector 22, and a blind plug 23 and a mist dispersion pipe (not shown) can be selectively connected to the connector 22 in a detachable manner.

Numeral 24 is a blind plug for closing the lower part of the upper body 5, and is fixed to the horizontal member 26 via bolts 25 etc. during liquid dispersion.The liquid feeding pipe 21 is connected to this blind plug 24. A connecting pipe 2T is attached to the side.

28 is a lid for sealing the tank 4.

Conventionally, the configuration is as described above, and when distributing powder or granules, the connection portion 18 of the second air pipe 17 of the opening/closing member 10 is connected as shown by the solid line.
At the same time, the liquid feed pipe 21 is connected to the compressed air supply pipe 19, and after the connector 22 is closed with a blind stopper 23, a predetermined powder or granular material is put into the tank 4.

Next, when the connecting rod 13 is operated, the opening/closing member 10 rotates around the rotating shaft 11 in the direction of the arrow a, opening the opening/closing member 10, so that the powder in the tank 4 is transferred to the powder removal lower. The dust falls and is sent to the dust dispersion pipe 9 by the compressed air from the air introduction pipe 8, and on the other hand, from the injection hole 14 of the opening/closing member 10, it passes through the first blow pipe 15, second blow pipe 17, etc. The supplied compressed air is injected to agitate the powder at the bottom of the tank 4 and prevent the bridging phenomenon from occurring.

When spraying liquid, first, as shown by the imaginary line, the liquid sending pipe 21
from the compressed air supply pipe 19 and connect it to the connecting pipe 27 of the blind plug 24.
At the same time, pull out the second blow pipe 11 from the connection part 1B of the opening/closing member 10 and connect it to the compressed air supply pipe 19. Furthermore, set the blind plug 24 at the bottom of the upper body 5 of the tank 4, and tighten it with bolts 25, etc. After fixing, a predetermined liquid is put into the tank 4, pressurized with compressed air supplied into the tank 4 from the compressed air supply pipe 19 via the second blow pipe 17, and the connecting pipe 2T is
, liquid feed pipe 21. The liquid is pumped through the connector 22 to the mist dispersion pipe, but when changing to this liquid dispersion method,
It is necessary to change the connection position of the liquid sending pipe 21 and the second blowing pipe IT and to attach the blind plug 24, which makes handling very complicated.

In particular, since the second blow pipe 17 is located in a narrow area at the bottom of the tank 4, complication is an unavoidable problem.

The present invention solves such conventional problems, and
Its features include (when dispersing rolled powder granules, the powder is stirred by compressed air supplied to the bottom of the tank via the blow pipe; when dispersing liquid, the inside of the tank is heated by compressed air supplied via the blow pipe; In a powder/liquid type sprayer that presses the pressure and sends liquid from a liquid feed pipe that opens near the bottom of the tank, an on-off valve is installed to open and close the powder outlet at the bottom of the tank. , an injection hole is formed for injecting compressed air from the blast pipe into the inside of the tank, and a check valve is provided in the blast pipe system to allow the compressed air to be supplied to the tank and prevent backflow of liquid in the tank. , the liquid sending pipe is provided so as to open near the bottom of the tank above the on-off valve.

The present invention will be described in detail below with reference to the illustrated embodiments.
Components with the same names as those shown in the figures are given the same reference numerals, and their explanations will be simplified.

In FIGS. 2 and 3, reference numeral 29 denotes an on-off valve that opens and closes the powder extraction lower, and has a valve rod 30 and a valve body 31.

The valve stem 30 is vertically movably inserted into and supported by a guide plate 32 attached to the horizontal member 26, and the engagement portion 33 and the guide plate 32
It is urged downward by a spring 34 interposed between.

The valve body 31 can move toward and away from a tapered valve seat 35 formed in the lower body 6 of the tank 4, and is normally brought into close contact with the valve seat 35 by a spring 34.

The on-off valve 29 is provided with injection holes 36 radially opening above the valve body 31, and each injection hole 36 passes through a through hole 37 in the valve stem 30 and is connected to a second injection hole 36 connected to its upper end. It communicates with the blower pipe 1T.

Further, a connecting protrusion 39 having a notch 38 is protruded from the on-off valve 29, and the liquid feeding pipe 21 is connected to the connecting protrusion 39 through the notch 38 so as to open near the inner bottom of the tank 4. .

40 is an operation link for operating the on-off valve 29, and the rotation shaft 11
The valve stem 30 is fixed to the valve rod 30 and is brought into contact with the lower surface of the engaging body 33 so as to sandwich the valve stem 30 therebetween.

41 is a check valve, which is incorporated into the connector 16;
This check valve 41 is for preventing backflow of liquid from the second blow pipe 17.

Note that the horizontal member 26 has a horizontal frame shape. According to the above configuration,
It can be used as it is for either powder or liquid dispersion.

That is, when dispersing powder and granules, the on-off valve 29 is opened and the tank 4 is
All you have to do is drop the powder inside to the powder outlet 1. In this case, when the connecting rod 13 is operated, the operation link 40 rotates in the direction of arrow b via the link 12 and rotation shaft 11. As a result, the on-off valve 29 rises in the direction of arrow C through the engaging body 33 without resisting the spring 34, and a gap is created between the valve body 31 and the valve seat 35, so that the powder and granules move upward. It falls downward through the gap.

Further, compressed air is injected from an injection hole 36 formed in the on-off valve 29, which agitates the powder near the on-off valve 29 and prevents the bridging phenomenon from occurring.

It goes without saying that the opening degree of the on-off valve 29 is adjusted using the operating lever.

When the operating lever is unlocked, the on-off valve 29 is released by the spring 34.
The valve body 31 is pressed downward by the valve seat 35, so that when spraying liquid, after closing the on-off valve 29,
All you have to do is fill tank 4 with liquid.

That is, since the injection hole 36 opens above the valve body 31 of the on-off valve 290, the inside of the tank 4 can be pressurized by the compressed air that is injected from the injection hole, and due to this pressurization, the liquid flows through the notch 38 of the connection protrusion 39. Then, the liquid is sent to the liquid sending pipe 21 side.

In the embodiment, the opening/closing valve 29 is configured to move up and down, but may be configured to rotate like the opening/closing member 10.

Further, it is sufficient that the liquid sending pipe 21 is open near the bottom of the tank 4, and it is not necessarily necessary to connect it to the on-off valve 29 side as long as it is in a position that does not interfere with the opening/closing operation of the on-off valve 29. .

As described in detail in the embodiments above, according to the present invention, when changing from powder spraying to liquid spraying, or from liquid spraying to powder spraying, the blow pipe and blower can be used as before. There is no need to change the connection position of liquid pipes or attach or detach blind plugs, making handling easier and significantly improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional example, FIG. 2 is a sectional view showing an embodiment of the present invention, and FIG. 3 is an enlarged view of the main parts thereof. 4...tank, I...powder outlet, 15.17.
...Air pipe, 16...Connector, 21...Liquid pipe, 2
9... Opening/closing valve, 31... Valve body, 36... Injection hole,
41...Check valve.

Claims (1)

[Claims] 1. When distributing powder, the powder is stirred by compressed air supplied to the bottom of the tank through the blast pipe, and when distributing liquid, the inside of the tank is pressurized by compressed air supplied through the blast pipe, and the area near the bottom of the tank is In a powder/liquid type sprayer that sends liquid from a liquid feed pipe that opens at An injection hole for injecting air into the inside of the tank is formed, a check valve is provided in the blow pipe system to allow compressed air to be supplied to the tank and prevent backflow of liquid in the tank, and the liquid feed pipe is A powder/liquid spreader characterized by having an opening above the on-off valve and near the bottom of the tank.