JPH09236183A - Liquid fixed quantity feed device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the repeated, high-precise, and automatic fixed quantity feed of liquid. SOLUTION: A liquid fixed quantity feed device comprises a storage tank 1 to store liquid 2; and a feed line 4 extending downward from the storage tank 1 and causing the flow of the liquid 2 in the storage tank 1 to an object 25 to be fed through a feed port at a lower end. A metering pipe 7 having opening closing valves 5 and 6 individually opened and closed and situated upper stream and downstream is located midway of a feed line 4. A capacity fine adjusting means 8 to effect fine adjustment of capacity is arranged in the metering pipe 7 between the opening closing valve 5 and 6, and the capacity of the metering pipe 7 is set by a capacity regulating means 8 so that an actual feed amount is adjusted to a necessary feed amount. The metering pipe 7 is filled with the liquid 2 in the storage tank 1 through proper opening closing of the opening closing valves 5 and 6 and the liquid 2 with which the metering pipe 7 is filled is fed through a feed port.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid constant quantity supply device, for example, for automatically supplying a constant amount of water to a pot for cooking rice in a batch system or automatically supplying drinking water to bottles or bags for commercial use. The present invention relates to a liquid quantitative supply device for quantitatively quantitatively filling.

[0002]

2. Description of the Related Art Conventionally, in order to supply a fixed amount of liquid, the flow rate per unit time of the liquid supply path is kept constant, and the time from when the valve provided in this supply path is opened until it is closed. Is controlled automatically.

[0003]

However, even if the flow rate in the supply path is set constant and the opening time of the supply path is automatically controlled, there is still a fluctuation of about 1%, and there is no method for eliminating this. Not provided.

For this reason, in cooking rice, water cannot be set accurately because water is automatically supplied, and delicious rice cannot be cooked completely, and it is necessary to manually adjust the amount of water to cook delicious rice.

In addition, when the bottle for commercial use is filled with drinking water, the actual filling amount is set to an amount in which the fluctuation range of about 1% is added, so that the fluctuation of 1% is net. This prevents the problem of distribution due to lack of capacity.

Therefore, there is a demand for an apparatus that can automatically and accurately supply a fixed amount of liquid repeatedly.

An object of the present invention is to provide a liquid constant quantity supply device which can meet such requirements.

[0008]

According to a first aspect of the present invention, a storage tank for storing a liquid, and a liquid that extends downward from the storage tank and is stored in the storage tank are supplied from a lower end supply port to a supply target such as a container. A supply pipe is provided, and a metering pipe having an on-off valve that is individually opened and closed on the upstream side and the downstream side is provided in the middle of this supply pipe, and the capacity between the on-off valves is finely adjusted for this metering pipe. It is characterized in that a capacity adjusting means is provided.

In such a structure, the capacity of the measuring pipe between the on-off valves is constant, including the state of fine adjustment by the capacity adjusting means. Therefore, when the upstream and downstream open valves are opened from the state where the upstream and downstream open and close valves are closed, the liquid in the storage tank flows into the metering pipe, which is in the constant capacity state, and is filled with the storage tank in a connected state. . When the on-off valve on the upstream side is closed in this state, the liquid in the measuring pipe is partitioned from the upstream side. When the open / close valve on the downstream side is opened in this state, the liquid filled in the metering pipe having a constant capacity flows to the supply port, flows out, and is supplied to the supply target.

Here, the liquid is actually supplied by the above-mentioned operation, and the capacity of the measuring pipe is finely adjusted by the capacity adjusting means so that the amount of liquid supplied once becomes a predetermined amount. The supply amount of each time is well stabilized to a predetermined amount, and the repeatability is remarkably improved.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the measuring pipe further has a connection portion which can be replaced with the supply pipe line.

With such a construction, in addition to the invention of claim 1, it is possible to cope with various supply amounts by replacing the measuring pipe with one having a different capacity.

According to a third aspect of the present invention, in addition to the second aspect, the connecting portion is between the measuring pipe and each on-off valve.

With such a construction, in addition to the invention of claim 2, it is possible to cope with the change of the supply amount by only replacing one of the measuring pipes.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, further, the measuring pipe is made of a thin metal plate, and the capacity adjusting means sandwiches the measuring pipe from both sides. It is provided with a sandwiching member and an interval adjusting member for adjusting an interval of sandwiching by the sandwiching member.

In such a construction, in addition to any one of the inventions of claims 1 to 3, the measuring pipe is made of a thin metal plate and can be flattened with a restoring force to the pipe form. If you adjust the spacing of each sandwiching member that is sandwiched by the spacing adjustment member, you can easily finely adjust the capacity of the measuring pipe by flattening the measuring pipe at the sandwiching degree corresponding to the adjusted spacing, and The supply amount required for supply can be obtained accurately.

According to a fifth aspect of the present invention, in addition to the fourth aspect, the gap adjusting member is a screw threaded from one sandwiching member to the other sandwiching member and screwed into the other sandwiching member.

With such a construction, in addition to the invention of claim 4, in order to finely adjust the flatness of the measuring pipe by adjusting the interval between the sandwiching members, the lead of the screw is used for finer adjustment. Easy and accurate.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects of the present invention, the storage tank has a negative pressure.

In such a construction, in addition to any one of the inventions of claims 1 to 5, when the liquid in the storage tank flows into the measuring pipe when the opening / closing valve on the upstream side is opened, Since the air in the measuring pipe is sucked up by the negative pressure of, the replacement of the air in the measuring pipe with the liquid in the storage tank is promoted, the filling speed of the liquid in the measuring pipe is increased, and a fixed amount of liquid is supplied. The tact time can be shortened and work efficiency can be improved.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the invention, the measuring pipe is provided with a combination of a plurality of measuring pipes having different capacities.

In such a structure, in addition to any one of the inventions of claims 1 to 6, a plurality of measuring pipes are further selected and used according to a required supply amount, thereby providing various supply amounts. It is possible to easily realize the supply of the liquid satisfying the above condition.

The invention of claim 8 is any one of the inventions of claims 1 to 7, further having a nozzle shape in which a supply port is inserted into a mouth of a filling object which is a narrow mouth container, An air vent pipe is provided that protrudes from the inside to the outside of the filling target through the inside of the supply port.

In such a construction, in addition to any one of the inventions of claims 1 to 7, further, a liquid is supplied by inserting a nozzle-shaped supply port into the mouth of the narrow-mouthed container to be supplied. However, even if there is little or no gap between the mouth of the narrow mouth and the supply port inserted into it, the inside of the narrow mouth container to be supplied is connected to the outside of the narrow mouth container through the air vent pipe passing through the inside of the supply opening. Therefore, when the liquid is supplied to the narrow mouth container, the air in the narrow mouth container is easily expelled to the outside through the air vent pipe, so that the supply and filling of the liquid for the narrow mouth container can be reliably and smoothly performed. Can be achieved in time.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One representative embodiment of the present invention will be described below in detail with reference to the drawings.

The present embodiment is a liquid supply device having a convenient form and structure when a narrow mouth container is a liquid supply target. Therefore, depending on the application, such as a case where a fixed amount of liquid is supplied to a pot that cooks rice in batches, or a form or structure suitable for each may be adopted.

As shown in the main structure in FIG. 1, a suitable storage tank 1 for storing a liquid, and a liquid 2 in the storage tank 1 extending downward from the storage tank 1 from a supply port 3 at the lower end. It is provided with a supply conduit 4 which is poured into a supply target such as a narrow mouth container 25. In addition, a metering pipe 7 having on-off valves 5 and 6 that are individually opened and closed on the upstream side and the downstream side is provided in the middle of the supply pipe line 4, and the capacity between the on-off valves 5 and 6 is provided on the metering pipe 7. There is provided a capacity adjusting means 8 for finely adjusting.

In this embodiment, the supply pipeline 4 is the storage tank 1.
, But it may extend downward so as to incline. Further, the on-off valves 5 and 6 may be curved or bent in the middle and may be connected to the measuring pipe 7 to measure the liquid.
The portion other than the space may be a flexible conduit. It is advantageous not to make the measuring pipe portion between the on-off valves 5 and 6 for measuring the liquid flexible so that the set volume does not change.

The measuring pipe 7 has replaceable connecting parts 11, 12 between the measuring pipe 7 and the supply pipe 4, and the connecting parts 11, 12 are screwed parts between the measuring pipe 7 and the respective on-off valves 5, 6. For this connection, metal bushes 13 having threaded portions for connecting to the on-off valves 5 and 6 are attached to the upper and lower ends of the measuring pipe 7. However, such a connection structure can be designed in various ways.

Further, in the present embodiment, the measuring pipe 7 is made of a thin metal plate, and the capacity adjusting means 8 holds a pair of sandwiching members 21 and 22 for sandwiching the middle of the measuring pipe 7 from both sides, and the sandwiching member 21. , 22 to adjust the sandwiching interval. As a material of the measuring pipe 7, a stainless steel plate having a thickness of, for example, about 1 mm is suitable in view of the restoring force and hygiene. But,
It is not limited to this. Further, it is preferable to use a tube having a circular cross section for the restoring force. However, this may also have various cross-sectional shapes according to various circumstances.

The space adjusting member 23 is one of the sandwiching members 2
The screw 23 a is threaded from the other pinching member 22 through the other pinching member 22. The supply port 3 has a nozzle shape that is inserted into the mouth portion 25a of the filling target that is the narrow mouth container 25, and the air vent pipe that projects from the inside of the filling target through the supply port 3 to the outside of the narrow mouth container 25 that is the filling target. 26 is provided. Each of the sandwiching members 21 and 22 may be pivotally attached to one end side thereof so that the other end side can be opened and closed, and the other end side may be adjusted with the screw 23a, and in this case, the operation is performed to adjust the interval. The number of screws 23a to be used is one, which is convenient for operation.

The capacity of the measuring pipe 7 between the on-off valves 5 and 6 is constant, including the state of fine adjustment by the capacity adjusting means 8.
Therefore, as shown in FIG. 1A, each of the on-off valves 5 on the downstream side,
When the upstream side opening / closing valve 5 is opened as shown in FIG. 2 from the state in which 6 is closed, the state in which the liquid 2 in the storage tank 1 flows into the measuring pipe 7 in the above-mentioned fixed capacity state and is connected to the storage tank 1 Filled with.

In this state, when the on-off valve 5 on the upstream side is closed as shown in FIG. 3, the liquid in the measuring pipe 7 is partitioned from the upstream side. When the on-off valve 6 on the downstream side is opened in this state, the liquid 2 filled in the metering pipe 7 having a constant capacity flows to the supply port 3 as shown in FIG. It is supplied to the container 25.

Here, the liquid 2 is obtained by the above-mentioned operation.
When the capacity of the measuring pipe 7 is finely adjusted by the capacity adjusting means 8 so that the amount of liquid supplied once becomes a predetermined amount, the amount of liquid supplied each time thereafter is well stabilized at the predetermined amount. , The repeatability is remarkably improved. According to the experiment by the present inventor, the fluctuation of the supply amount each time is about 0.1%, which is 10% of the conventional value.
It is twice as accurate. This indicates that all the liquid in the measuring pipe 7 is always in a constant outflow state. In other words, there is no fluctuation such that one or two water drops remain or do not remain. However, this degree of variation is allowed depending on the required accuracy. Therefore,
The capacity adjusting means 8 may be spliced so that the length of the measuring pipe 7 can be adjusted, and the capacity can be finely adjusted by adjusting the length.

In this case, the measuring pipe 7 has a thick wall and is not deformed. Also, the measuring pipe 6 shall not be deformed,
It is also possible to provide a capacity adjuster inside of this so as to project and retract, and finely adjust the degree of protrusion. But,
Also in these cases, it is preferable that the liquid flowing down in the measuring pipe 7 is hard to be caught, and fine adjustment is conveniently performed with a screw.

The amount of the liquid 2 stored in the storage tank 1 is
It may be set so as to exceed the supply amount once, and it is preferable that a constant liquid amount is always maintained when the liquid is poured into the measuring pipe 7. In addition, the liquid 2 as described above
In order to automatically perform a fixed amount of supply, the opening / closing valves 5 and 6 may be electromagnetic valves whose timing and order of opening / closing are controlled by a microcomputer or the like, and the storage amount of the liquid 2 in the storage tank 1 is as shown in FIG. It is preferable to replenish as needed while detecting the liquid amount by the liquid amount sensor 31 as shown in FIG. The output of the liquid amount sensor 31 is input to, for example, the water supply control means 32, and the liquid supply pipe 3 is supplied in accordance with the output.
It is performed by opening and closing the solenoid valve 33 of 0. Also,
A suction pipe 34 from a vacuum suction source is used to make the storage tank 1 a negative pressure.
Is connected.

Further, as in the present embodiment, the connecting portion 11,
By using 12 to replace the metering pipe 7 with one having a different capacity, various supply amounts can be dealt with. Moreover, since the connecting portions 11 and 12 are located between the measuring pipe 7 and the respective on-off valves 5 and 6, the supply amount can be changed only by replacing the measuring pipe 7 alone.

Further, the measuring pipe 7 of the present embodiment is made of a thin metal plate such as stainless steel, and is shown in FIGS. 1 (a) and 1 (b).
Each clamping member 2 that can be flattened with a restoring force to a tube shape having a circular cross section as shown in FIG.
When the space between Nos. 1 and 22 is adjusted by the space adjusting member 23, the measuring pipe 7 has a pinching degree corresponding to the space thus adjusted.
1 is flattened to the limit shown in FIG. 1 (c) to easily finely adjust the capacity of the measuring pipe 7, and the supply amount required for one supply can be accurately obtained. In the present embodiment, the fine adjustment of about 34% can be performed by the capacity adjustment width between (b) and (c) of FIG. Therefore, in this range, not only fine adjustment for obtaining the required supply amount but also capacity change when changing the required supply amount can be dealt with.

Particularly in the present embodiment, each sandwiching member 2
The flatness of the measuring pipe 7 can be finely adjusted by adjusting the interval between Nos. 1 and 22. The lead of the screw 23a can be used for finer, easier and appropriate adjustment.

When the storage tank 1 is kept at a negative pressure, the opening / closing valve 5 on the upstream side is opened and the liquid 2 in the storage tank 1 is changed from the state of FIG. 1 (a) to the measuring pipe 7 as shown in FIG. When flowing into the storage tank 1, the negative pressure in the storage tank 1 sucks up the air contained in the measurement tube 7, so that the replacement of the air in the measurement tube 7 with the liquid in the storage tank 1 is promoted, and the measurement tube 7 It is possible to increase the filling speed of the liquid 2 inside, shorten the tact time for supplying a fixed amount of the liquid 2, and improve the work efficiency.

When the metering pipe 7 is replaced to cope with the required change in the supply amount, it is preferable to combine a plurality of pipes having different capacities from the beginning. In this way, by selecting and using a plurality of measuring pipes 7 according to the required supply amount, it is possible to easily realize the supply of liquid satisfying various supply amounts.

Further, in the present embodiment, since the supply target is the narrow mouth container 25, the nozzle-shaped supply port 3 is provided with the mouth portion 25a of the narrow mouth container 25 as shown in FIGS.
Although the liquid is supplied by inserting into the narrow mouth container 25a, even if there is little or no gap between the mouth portion 25a of the narrow mouth and the supply port 3 inserted therein, as shown in the figure, Since air communicates with the outside of the narrow mouth container 25 through the air vent pipe 26 passing through the mouth 3, when the liquid is supplied into the narrow mouth container 25, the air in the narrow mouth container 25 is easily expelled to the outside through the air vent pipe 26. It is possible to reliably and smoothly achieve the supply and filling of the liquid 2 with the narrow mouth container 25 as the supply target.

[0043]

According to the first aspect of the invention, when the liquid is actually supplied and the capacity of the measuring pipe is finely adjusted by the capacity adjusting means so that the amount of liquid supplied once becomes a predetermined amount, The supply amount of each time thereafter is well stabilized at a predetermined amount, and the repeatability is remarkably improved.

According to the invention of claim 2, in addition to the invention of claim 1, it is possible to cope with various supply amounts by replacing the measuring pipe with one having a different capacity.

According to the invention of claim 3, in addition to the invention of claim 2, the supply amount can be changed only by replacing one of the measuring pipes.

According to the invention of claim 4, in addition to any one of the inventions of claims 1 to 3, the degree of pinching corresponding to the adjustment of the interval of each pinching member which pinches the measuring pipe. The flattening of the metering tube makes it possible to easily finely adjust the capacity of the metering tube, and the supply amount required for one supply can be accurately obtained.

According to the invention of claim 5, in addition to the invention of claim 4, the lead of the screw is utilized for finely adjusting the flatness of the measuring pipe by adjusting the interval between the sandwiching members. It can be done more finely, easily and accurately.

According to the invention of claim 6, in addition to any one of the inventions of claims 1-5, when the liquid in the storage tank flows into the measuring tube, the inside of the measuring tube is caused by the negative pressure in the storage tank. It sucks up the air contained in it and promotes the replacement of the air in the measuring pipe with the liquid in the storage tank, increasing the filling speed of the liquid in the measuring pipe and shortening the tact time for supplying a fixed amount of liquid to improve work efficiency. Can be improved.

According to the invention of claim 7, in addition to any one of the inventions of claims 1 to 6, further, a plurality of measuring pipes are selected and used according to a required supply amount.
It is possible to easily realize the supply of liquid that satisfies various supply amounts.

According to the invention of claim 8, in addition to any one of the inventions of claims 1-7, there is little or no gap between the mouth of the narrow mouth and the supply port inserted therein. Even in such a case, when the liquid is supplied into the narrow-mouthed container, the air in the narrow-mouthed container is easily expelled to the outside through the air vent pipe.
Filling can be achieved reliably and smoothly in a short time.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a liquid constant quantity supply device according to an embodiment of the present invention, and a horizontal cross-sectional view showing a non-adjusted state and a maximum adjusted state of a capacity adjusting means.

FIG. 2 is a vertical sectional view showing an initial state of liquid measurement of the apparatus of FIG.

3 is a vertical cross-sectional view showing a completed state of liquid metering of the apparatus of FIG.

FIG. 4 is a vertical cross-sectional view showing a fixed amount liquid supply state of the apparatus of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage tank 2 Liquid 3 Supply port 4 Supply pipeline 5, 6 Open / close valve 7 Measuring pipe 8 Capacity adjusting means 11, 12 Connection part 21, 22 Clamping member 23 Interval adjusting member 23a Screw 25 Narrow mouth container 25a Mouth portion 26 Air vent pipe 30 Liquid supply pipe 34 Suction pipe

Claims (8)

[Claims] 1. A storage tank for storing a liquid, and a supply pipeline extending downward from the storage tank for flowing the liquid in the storage tank from a lower end supply port to a supply target such as a container. A metering pipe having an on-off valve that is individually opened and closed on the upstream side and the downstream side is provided in the middle of the, and a capacity adjusting means for finely adjusting the capacity between the on-off valves is provided on this metering pipe. Liquid constant quantity supply device. 2. The liquid constant quantity supply device according to claim 1, wherein the measuring pipe has a replaceable connecting portion between the measuring pipe and the supply pipe line. 3. The liquid constant quantity supply device according to claim 2, wherein the connecting portion is between the measuring pipe and each on-off valve. 4. The measuring pipe is made of a thin metal plate, and the capacity adjusting means includes a pair of sandwiching members for sandwiching the middle of the measuring pipe from both sides, and an interval adjusting member for adjusting the sandwiching interval by the sandwiching members. The liquid quantitative supply device according to any one of claims 1 to 3, which is provided. 5. The liquid constant quantity supply device according to claim 4, wherein the space adjusting member is a screw threaded from one sandwiching member through the other sandwiching member and screwed into the other sandwiching member. 6. The storage tank is set to a negative pressure.
The liquid quantitative supply device according to any one of 1. 7. The liquid quantitative supply device according to claim 1, wherein a plurality of measuring tubes having different capacities are combined and provided. 8. The supply port has a nozzle shape to be inserted into a mouth of a filling target, which is a narrow-mouthed container, and is provided with an air vent pipe protruding from inside the filling target to outside the filling target through the supply port. The liquid constant quantity supply device according to claim 7.