JPS5852915B2 - liquid automatic injection nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that automatically supplies a certain amount of soy sauce to a soy sauce bottle, for example, and in particular, to a device that can quickly remove air and residual liquid in the bottle and device and smoothly inject the liquid. This is an improvement on the nozzle.

Conventionally, this type of device has a nozzle body that is connected to a liquid tank, and an air vent tube whose upper end is open to the outside air coaxially with the tube, so that its lower end can be positioned inside the bottle. Liquid injection and blocking are performed by a valve body provided at the end.

However, with this conventional nozzle, the liquid is injected into the bottle through a relatively narrow passage, which results in excessive injection time and intrusion of the injected liquid or liquid with air bubbles into the air vent tube, which causes air in the bottle to be injected into the bottle. This obstructs the discharge of the liquid and prevents smooth injection work.

This invention eliminates such drawbacks, and includes an outer cylinder fixed to a liquid tank, a large diameter part provided above the outer cylinder, and a small diameter part provided below, and the liquid in the tank is constantly pumped through the large diameter part. A window is drilled in the outer cylinder to allow the liquid to infiltrate into the outer cylinder, a stepped part inside the outer cylinder is formed by providing the large diameter part and the small diameter part, and the liquid in the large diameter part is always in contact with the surface of this stepped part. a valve body for preventing the valve body from facing toward the small diameter part; an inner cylinder fixed to the lower surface of the valve body and fitted above the small diameter part in the outer cylinder so as to be able to move up and down;
A window is bored in the inner cylinder to guide the liquid inside the large diameter part when the inner cylinder rises, and this inner cylinder is fitted below the small diameter part with an appropriate interval. a piston cylinder that can touch the cylinder and push it up; a flange provided at the lower end of the piston cylinder that can come into contact with the upper side of the bottle spout into which liquid is to be injected; A liquid introduction pipe that can be inserted into the piston cylinder and guide the liquid from the piston cylinder and inject it into the bottle, and a liquid introduction pipe that is fixed to the upper end of the outer cylinder, the upper end of which is open above the liquid tank, and the lower end of which is connected to the outer cylinder, inner cylinder, and piston cylinder. , an air vent pipe that penetrates the center of the liquid introduction pipe and is located below the liquid introduction pipe;
An air vent hole is provided near the end of the air vent pipe in contact with the liquid introduction pipe, and is opened into the bottle when the iron pipe rises. This invention relates to an automatic liquid injection nozzle characterized by comprising an on-off valve that prevents liquid from flowing out of the pipe.

The liquid introduction pipe is inserted into the mouth of the bottle into which the liquid is to be injected, and the upper side of the mouth is in contact with the lower side of the flange.

When the bottle is raised by an appropriate device, the piston cylinder and liquid introduction pipe rise through the flange, the iron pipe is no longer in contact with the on-off valve provided at the end of the air vent pipe, and the end of the liquid introduction pipe is removed from the inside of the bottle. It will be released in

At this time, the piston cylinder moves up within the small diameter portion of the outer cylinder, but because of the space provided between it and the inner cylinder, it does not come into contact with the inner cylinder, thereby increasing the internal air pressure.

Further, as the piston cylinder rises, it pushes up the inner cylinder, so that the valve body provided at the upper end of the inner cylinder is not in contact with the step inside the outer cylinder, and the window bored in the inner cylinder is the same as that of the outer cylinder. Since it is located in the diameter part, the liquid in the large diameter part flows forcefully from the window of the inner cylinder to the inner cylinder, through the piston cylinder, and into the bottle from the liquid introduction pipe due to the high internal pressure, This injection work can be performed quickly and smoothly.

At this time, the air in the bottle rises through the air vent tube because the air vent hole in the air vent tube is opened inside the bottle due to the rise of the liquid introduction tube, so the air rises through the air vent tube and is discharged to the outside air above the tank.

When the above-mentioned liquid is forcefully injected into the bottle, the air inside the bottle is also forcefully discharged, so even if there is residual liquid in the air vent pipe, it can be quickly returned to the tank. be.

The present invention has an inner cylinder and a piston cylinder installed in the large and small diameter parts of the outer cylinder, making the entire structure more compact.It also has fewer parts compared to conventional systems, and is therefore less expensive with no risk of failure. Can be mass produced.

Next, one embodiment of the present invention will be briefly explained with reference to the drawings.
is an outer cylinder whose outer center portion is attached to the bottom surface of the liquid tank a.

The inside of the outer cylinder 1 has a large diameter part 3 in the upper half and a small diameter part 3 in the lower half, and there is a window 4 in the wall of the large diameter part 2 through which the liquid in the tank a can enter.

Reference numeral 5 denotes an inner cylinder fitted above the small diameter part 3 so as to be able to move up and down, the upper end of which is connected to a stepped part 6 formed by the small diameter part 3 and the large diameter part 2 of the outer cylinder 1. The valve body 7 is capable of abutting against the upper surface of the valve body 7, and the lower part thereof is in contact with the inner surface of the small diameter portion 3 of the outer cylinder 1, and there is a liquid infiltration window 8.

Further, there is a coil spring 10 between the upper surface of the valve body 7 and the cap 9 at the upper end of the outer cylinder 1, and the valve body 7 normally abuts against the stepped portion 6.

11 is a piston cylinder, the upper part of which is in contact with the inner surface of the outer cylinder 1,
Although its upper end is provided with a gap from the end of the inner cylinder 5, the piston cylinder 11 is placed in a position where they can abut each other when the piston cylinder 11 rises.

The lower end of this piston cylinder 11 is located below the end of the outer cylinder 1 and has a horizontal flange part 12.
The bottom surface of the bottle can meet the mouth of the bottle.

Further, there is a coil spring 13' between the upper surface of this flange portion 12 and a protrusion 13 provided at an appropriate position on the outer cylinder 1, which presses the flange portion 12 downward.

Furthermore, there is a liquid introduction pipe 14 suspended from the center of the lower surface of this flange part 12, and the lower part of the pipe can penetrate into the bottle a little, and the end thereof is open.

Reference numeral 15 denotes an air vent pipe that passes through the cap 9 at the upper end of the outer cylinder 1 and is fixed thereto.The upper end thereof is opened into the tank a above the water level of the liquid in the tank a, and the lower part thereof is the air vent pipe that is fixed to the cap 9 at the upper end of the outer cylinder 1. , the valve body 7, the piston cylinder 11, and the liquid introduction pipe 15, and are provided with an on-off valve 16 at the end thereof, which passes through the center axis of each of the valve body 7, the piston cylinder 11, and the liquid introduction pipe 15, and whose upper surface blocks the end of the introduction pipe 15.

Further, below the air vent pipe 15, as shown in FIG. 2, an auxiliary introduction pipe 18 with a gap on the outside of the iron pipe 15 and a closed end is provided in contact with the inner surface of the air vent pipe 15.
A vertically elongated liquid outflow hole 19 is bored on one side thereof.

Furthermore, an air vent hole 17 is provided below the air vent pipe 15 at a position opposite to the hole 19, and the crest hole 17 passes through the auxiliary introduction pipe 18 through a gap between the air vent pipe 15 and the auxiliary introduction pipe 18. ing.

At this time, the vent hole 17 does not communicate with the gap between the air vent pipe 15 and the auxiliary introduction pipe 18.

In the figure, the liquid in the tank is flowing through the inlet window 4 of the outer cylinder 1.
A valve body 7 located within the larger diameter portion 2 prevents entry into the smaller diameter portion 3.

With an appropriate device (not shown), when the bottle into which liquid is to be injected rises, its mouth part contacts the flange part 12 with the respring 1.
As a result of pushing up against the pressing force of 3/, the piston cylinder 11 and the liquid introduction pipe 14 rise.

At this point in the illustrated embodiment, even though the iron pipe 14 is raised, the holes 17 and 19 of the air vent pipe 15 and the auxiliary introduction pipe 18 are closed, so the small diameter part of the outer cylinder 1 The pressure inside is compressed and increases.

When the piston cylinder 11 further rises, the upper end of the cylinder 11
Since the end of the inner cylinder 5 abuts against each other and raises the inner cylinder 5 against the pressing force of the spring 10, the valve body 7 is interlocked.

As a result, the liquid that was in the large diameter part 2 of the outer cylinder 1 flows forcefully into the small diameter part 3 through the window 8 of the inner cylinder 5 because the pressure in the small diameter part 3 of the outer cylinder 1 is high as described above. At this time, the liquid outflow hole 19 is already open in the bottle mouth, so the liquid passes from the piston cylinder 11 through the auxiliary liquid introduction pipe 18.
The water is rapidly poured into the bottle through the outflow hole 19.

In addition, since the liquid flows out into the bottle rapidly, the air inside the bottle also rapidly enters the air vent pipe 15 through the air vent hole 17, and even if a small amount of liquid has accumulated in this pipe 15, the air will The force of the discharge causes it to rise and return the exhaust gas or liquid to the upper part of the tank a.

When the liquid in the bottle reaches a certain level, the bottle is lowered by a suitable device, each member performs the opposite action to the above and returns to its old position, and this operation is repeated in sequence.

As described in detail above, in this invention, an inner cylinder and a piston cylinder that can abut against the inner cylinder with a gap are provided in the large and small diameter parts of the outer cylinder that is attached to the tank. Compressed air can be created within the piston cylinder and inner cylinder, so that liquid can be vigorously injected into the bottle at the time of inflow.

In addition, a small amount of liquid or liquid mixed with air bubbles may remain in the air vent tube, but as mentioned above, the force of the liquid flowing forcefully into the bottle increases the pressure of the air inside the bottle. As a result, the remaining liquid can be returned to the tank vigorously, which has a significant effect on smoothly pouring the liquid into the bottle.

In the embodiment of the present invention, the liquid inlet hole 19 and the air vent hole 17 are provided in one direction opposite to each other, so that there is almost no possibility that the liquid will be sucked in from the discharge hole 17 side. .

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention, and FIG. 1 is an explanatory cross-sectional view of the whole
Fig. 2 is an explanatory cross-sectional view taken along the line ■-■ in Fig. 1. 1...Outer cylinder, 5...Inner cylinder, 7...
... Valve body, 11 ... Piston cylinder, 12 ...
...Flange part, 14...Liquid introduction pipe, 15.
...Air vent pipe.

Claims (1)

[Claims] 1. An outer cylinder fixed to the liquid tank, a large diameter part provided above and a small diameter part provided below, and a hole bored in the outer cylinder to allow the liquid in the tank to constantly infiltrate into the large diameter part. A window, a stepped portion in the outer cylinder formed by providing the large-diameter portion and the small-diameter portion, and a valve that is in contact with the surface of the stepped portion and normally prevents liquid from the large-diameter portion from flowing toward the small-diameter portion. an inner cylinder fixed to the lower surface of the valve body and fitted above the small diameter part in the outer cylinder so as to be able to move up and down, and when the inner cylinder rises, the liquid in the large diameter part is directed inward of the inner cylinder A window is formed in the inner cylinder for guiding the inner cylinder, a piston cylinder is fitted below the small diameter part with an appropriate interval between the inner cylinder, and the piston cylinder is able to touch and push up the inner cylinder when rising. a flange portion provided at the lower end and capable of contacting the upper side of the bottle mouth into which liquid is to be injected; and a flange portion provided hanging down from the piston cylinder and capable of being inserted into the bottle mouth and capable of guiding the liquid from the piston cylinder and injecting it into the bottle. The introduction pipe is fixed to the upper end of the outer cylinder, the upper end of which is opened above the liquid tank, and the lower end passes through the center of the outer cylinder, inner cylinder, piston cylinder, and liquid introduction pipe and extends below the liquid introduction pipe. an air vent hole which is provided near the end of the air vent pipe in contact with the liquid introduction pipe and opens into the bottle when the pipe rises; and an air vent hole which is provided at the end of the air vent pipe and is normally in contact with the liquid introduction pipe. An automatic liquid injection nozzle comprising an on-off valve that is in contact with the periphery of the end of the tube and prevents the liquid inside the tube from flowing out of the tube.