JPS6220118B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field to which the present invention pertains] 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 quickly removes air inside the bottle to smoothly supply a certain amount of soy sauce to a soy sauce bottle. This invention relates to the improvement of a nozzle that can inject liquids such as soy sauce.

[Prior art and its drawbacks] Conventionally, this type of nozzle has a nozzle body connected to a liquid tank for soy sauce, etc., and an air vent pipe whose upper end is open to the outside air coaxially installed, and this nozzle body is connected to a tank of liquid such as soy sauce. Insert inside. After that, when the liquid is injected into the bottle, the air inside the bottle is released to the outside air through the air vent tube. However, when the liquid in the bottle reaches a certain amount, the surface of the liquid closes the end of the air vent tube, making it impossible to exhaust air from the bottle and stopping the injection of liquid.

In this conventional device, as described above, the injection of liquid and the evacuation of air are performed at atmospheric pressure, so the operation is slow. In addition, during the above-mentioned air purge operation, a so-called backflow phenomenon occurs in which the liquid is guided toward the air purge pipe.
This caused the liquid to accumulate in the air vent pipe, thereby hindering smooth injection of liquid.

[Object of this invention] This invention enables the operation of pouring a fixed amount of liquid such as soy sauce into a bottle to be performed much faster and more smoothly than with conventional devices, and also to make it possible to pour liquid into an air vent pipe. The purpose is to prevent backflow.

[Features of the Invention] The features of the present invention include an outer cylinder whose approximately central portion is fixed to the bottom of the liquid tank, whose upper part is suspended within the tank and whose lower part is suspended below the tank, and which is fitted below the outer cylinder. an inner cylinder through which the liquid can flow and which can move up and down; a valve body that is in contact with the inner cylinder within the outer cylinder and does not normally close the flow of liquid between the inner and outer cylinders and receives back pressure from a first spring; A piston cylinder is fitted below within this inner cylinder to allow the circulation of the liquid and is movable up and down, and the lower end can be inserted into a bottle into which liquid is injected. a second spring that is weaker than the first spring; and a second spring that is fixed to the outer cylinder and whose upper end is opened above the liquid in the tank;
An air vent pipe whose lower part penetrates the inner cylinder and the piston cylinder with a space between them and the respective inner walls, and whose distal end is located below the piston cylinder, and the outer periphery of the distal end of this air vent pipe protrudes. a liquid dispersion member which forms a peak and a valley by forming a peak and a valley, and the peak comes in contact with the lower inner surface of the piston cylinder; a hole bored below the peak of the air vent pipe to guide the air inside the bottle into the air vent pipe; A flange portion provided on the piston cylinder and capable of contacting the mouth of the bottle into which the liquid is injected, and fixed to the outer cylinder with a space provided between the outer cylinder and the air vent pipe; The outer cylinder is provided with a guide tube whose upper end is closed and whose lower end is watertightly fitted into the central hole of the valve body, and an auxiliary air vent pipe whose upper end is open to the outside air and whose end is open to the upper part of the guide tube. It's about becoming.

[Operation of the Invention] Even though the outer cylinder is filled with the liquid in the tank, the liquid in the tank is prevented from entering the inner cylinder by the valve body. In this state, the bottle into which liquid is injected is automatically raised by another suitable device, and when this rises, the lower part of the piston is inserted into the bottle, and at the same time the mouth of the bottle is lifted up. contacts the flange portion of the piston cylinder and raises the piston cylinder against the pressing force of the second spring.

At this time, the first part of the valve body that closes the communication between the inner and outer cylinders is
The back pressure of the second spring is stronger than the back pressure of the second spring, so the valve body remains closed.

Therefore, the pressure inside the inner cylinder and the piston cylinder increases compared to the atmospheric pressure, and as the bottle further rises thereafter, the inner cylinder resists the pressing force of the second spring and causes the valve body to rise. At the same time, the connection between the lower inner surface of the piston cylinder and the mountain part of the air vent tube becomes detached due to the rise of the piston cylinder, and as a result, the liquid in the outer cylinder passes through the inner cylinder and the piston cylinder with force, and flows around the outer end of the air vent tube. It is injected into the bottle in a radial manner at the protruding peaks. At this time, the air in the bottle is discharged from above the liquid in the tank to the outside air through the hole in the air vent pipe.

Further, when the injection of a certain amount of liquid is completed, the bottle is automatically lowered, and the respective springs cause the members to return to their old positions and wait for the arrival of the next bottle.

Note that during the liquid injection operation, the liquid itself may enter the nozzle body along with air, and air may accumulate in the inner cylinder, piston cylinder, etc. due to repeated use. This air moves up the distance between the guide tube and the air vent tube within the guide tube provided in the outer cylinder, and is discharged to the outside air through the auxiliary air vent tube.

[Effects of the Invention] As described above, in the present invention, when liquid is injected into the bottle, the pressure inside the inner cylinder and the piston cylinder is compared with the atmospheric pressure to generate a high internal pressure in advance.
Thereafter, the valve body opens and the liquid is guided toward the bottle through the inner cylinder and the piston cylinder, and the liquid is rapidly accelerated, so that the injection operation becomes quick.

In addition, the liquid injected into the bottle from the piston cylinder is radially injected into the bottle at the peaks protruding from the outer periphery of the end of the air vent tube, and at this time, the air in the bottle is injected into the bottle above the air vent tube. The liquid in the tank is discharged from the upper part of the tank to the outside air through the air vent pipe from the hole at the bottom of the mountain, so the liquid injection route and the air discharge route are different to prevent the liquid from flowing back into the air vent pipe. Made it possible to prevent it.

Furthermore, during the liquid injection process, air may accumulate in the inner cylinder and piston cylinder due to repeated use, such as when the liquid itself enters the nozzle body with air. is released into the outside air from the auxiliary air vent pipe, so
This eliminates the drawback that air accumulates in the nozzle and liquid injection cannot be carried out quickly.

[Description of Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is an outer cylinder, the upper half of which is a small diameter portion 2 the lower half is a large diameter portion 3; Packing 5 is wrapped around the stepped portion 4 thus formed. Above this packing 5 is a threaded portion 6 carved in the small diameter portion.
This is screwed into a female screw part b provided on the bottom of a liquid tank a such as soy sauce, and the outer cylinder 1 is attached to the tank a.
At the same time, the small diameter portion 2 is located inside the tank. Further, around this small diameter portion 2, there are a large number of liquid introduction windows 8 in the vertical direction.

The large diameter portion 3 of the outer cylinder is suspended below the tank a, and the inner cylinder 7 is vertically slidable.
A valve body 10 having a larger diameter than the inner cylinder 7 is formed at the upper end thereof. Therefore, the above outer cylinder 1
The inside of the large diameter portion 3 has a large diameter at the top and a small diameter at the bottom, and the valve body 10 is located within the large diameter, and the inner surface step 11 of the outer cylinder 1 and the bottom surface of the valve body 10 9
is in contact with.

There are many liquid introduction windows 12 around the inner cylinder 7 directly below the valve body 10, the lower part of the inner cylinder 7 is located below the outer cylinder 1, and the upper part of the piston cylinder 13 is fitted. A flange portion 14 is provided approximately at the center of the piston cylinder 13, and a second spring 15 is wound around the inner cylinder 7 between the upper surface of the flange portion 14 and the lower surface of the outer cylinder 1. Incidentally, a device for setting a bottle filled with liquid in the correct position is usually attached to the lower surface of the flange portion 14, but these devices are omitted.

The lower part of the piston cylinder 13 is inserted into the bottle, and inside the piston cylinder 13, the upper part is fixed to the cap 16 at the upper end of the outer cylinder 1, and the upper end is opened to the outside air by passing through this. An air vent pipe 17 is provided with a gap between it and the inner surface of the piston cylinder 13. An inverted triangular valve 18 is provided at the end of the air vent pipe 17, and its upper surface is in contact with the lower end surface of the piston cylinder 13. Directly above this valve 18 is a liquid dispersion member 19 having peaks and valleys like an abacus bead, and the peaks 20 are in contact with the inner surface of the piston cylinder 13.
Directly below the air intake hole 9 is an air intake hole 21 that communicates with the air vent pipe 17.

In the outer cylinder 1, a guide tube 22 coaxial with the air vent pipe 17 is provided outside the air vent pipe 17 with a gap between the guide pipe 22 and the air vent pipe 17, and its upper end is fixed to the cap 16 of the outer cylinder 1. The lower end portion is fitted into the central hole 23 of the valve body 10 of the inner cylinder 7 in a watertight manner.

Also, between the upper surface of the valve body 10 and the cap 16 is a first spring 24 which is wound around a guide tube 22 and which constantly presses the valve body 10 downward and has a stronger force than the second spring 15. be. Reference numeral 25 denotes an auxiliary air vent pipe, the end of which is fixed to the cap 16 of the outer cylinder 1, and is inserted into the hole 26 of the cap 16.
Through the guide tube 22, the opening communicates with the gap between the air vent tube 17 in a narrow state, and the upper end communicates with the outside air above the liquid in the tank a.

Next, to explain the function of this nozzle, the liquid in the tank a now enters the outer cylinder 1 through the introduction window 8, but due to the joining of the step part 11 in the outer cylinder 1 and the valve body 10, Intrusion into the inner cylinder 7 is prevented.

Although not shown, the bottle into which the liquid is injected is located directly below these nozzles, is raised by a suitable lifting device, and the lower part of the piston cylinder 13 enters the mouth of the bottle.
The upper surface of the bottle mouth contacts the lower surface of the flange portion 14.

When the bottle further rises, the piston cylinder 13 moves to the second position.
As a result, the pressure inside the piston cylinder 13 and the inner cylinder 7 rises against the pressing force of the spring 15.

That is, the second spring 13
The valve body 1 is weaker than the spring 24 of
0 remains closed. When the bottle further rises, the upper surface of the flange portion 14 and the lower surface of the inner cylinder 7 come into contact with each other and push up the inner cylinder 7 against the pressing force of the first spring 24. 11 is removed, and the liquid inside the outer cylinder enters into the inner cylinder 7. At this time, as mentioned above, the internal pressure inside the inner cylinder 7 has increased, so the liquid enters the inner cylinder 7 quickly.At the same time as this liquid enters the inner cylinder 7, the piston cylinder 13 rises, causing the air to bleed out. tube 17
Since the peak 20 of the liquid dispersing member 19 at the end of the piston cylinder 13 is disengaged from the lower inner surface of the piston cylinder 13,
The liquid passes through the piston cylinder 13 and reaches the member 19.
It hits the peak 20 of the bottle and is poured into the bottle in a state where it is scattered around. On the other hand, the air inside the bottle rises inside the air vent pipe through a hole 21 provided at the end of the air vent pipe 17 and is discharged to the outside air above the tank a.

At this time, the liquid dispersing member 19 is formed of peaks and valleys like an abacus bead, and the peaks 20 cause the liquid to be discharged outward and poured into the bottle, so that air can be removed. This prevents the liquid from entering the air vent tube 17 without being directed toward the hole 21 of the tube 17, and thus being guided by the air released from the hole 21.

In addition, air may accumulate in the guide tube 22 in the outer cylinder 1 and the inner cylinder 7 when the nozzle is started to be used or due to the piston action again, and this causes a delay in the liquid injection operation. However, in this embodiment, an auxiliary air vent pipe 25 was provided that communicated between the guide pipe 22 and the vent pipe 17, and the air was discharged to the outside air, so that the injection work was easy. became even faster.

When a certain amount of liquid has been injected into the bottle, the bottle automatically descends, and each member performs an operation completely opposite to that described above, returning to the state shown in the figure.

As described in detail above, the present invention generates internal pressure in the nozzle in advance when injecting liquid into the bottle, so that the liquid can be injected quickly, and the liquid is injected into the bottle when it is injected. By discharging the air around the outside of the nozzle, we prevented backflow toward the air vent pipe inside the bottle, and we also made it possible to release the air inside the outer cylinder to the outside air through the auxiliary air vent pipe. This means that the injection process can now be performed even more quickly.

[Brief explanation of the drawing]

The figure is an explanatory cross-sectional view showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 2... Small diameter part, 3... Large diameter part, 7... Inner cylinder, 10... Valve body, 13... Piston cylinder, 17... Air vent pipe, 19... Spreading member, a... Tank.

Claims (1)

[Claims] 1. An outer cylinder whose approximately central part is fixed to the bottom of the liquid tank, and whose upper part is suspended within the tank and whose lower part is suspended below the tank, and which is fitted below the outer cylinder to allow the circulation of the liquid and to move vertically. a valve body that is in contact with the inner cylinder in the outer cylinder and receives back pressure from a first spring that normally closes the flow of liquid between the inner and outer cylinders; a piston cylinder that is capable of flowing and can move up and down, and whose lower end can be inserted into a bottle into which liquid is injected; a second spring that normally presses the piston cylinder downward but is weaker than the first spring; It is fixed to the outer cylinder, the upper end is open above the liquid in the tank, the lower part penetrates the inner cylinder and the piston cylinder with a gap between them and the respective inner walls, and the end part is located below the piston cylinder. a liquid dispersion member in which the outer periphery of the distal end of the air vent tube is protruded to form a peak and a valley, and the peak is in contact with the lower inner surface of the piston cylinder; a hole bored downward to guide the air inside the bottle into the air vent pipe; a flange provided on the piston cylinder and capable of contacting the mouth of the bottle into which the liquid is injected; The guide tube is fixed to the outer cylinder with a space between it and the air vent pipe, the upper end is closed and the lower part is fitted watertightly into the central hole of the valve body, and the upper end is open to the outside air and the end is closed. An automatic liquid injection nozzle characterized in that an auxiliary air vent pipe is provided in the outer cylinder and is opened at the upper part of the guide pipe.