JP2023083902A - Liquid filling system and liquid filling nozzle - Google Patents

Abstract

To provide a liquid filling system capable of performing from a small amount filling to a large amount filling for every filling portion, and setting a different filling amount.SOLUTION: In a liquid filling system 1, a stock solution is sucked from a stock solution tank 2 by a feeding pump 3, and the sucked stock solution is distributed to filling parts 5 in branching part units 4 so as to be filled into respective container S through the respective filling parts 5. A storage tank 15 temporally storing the stock solution and a pressurizing pump 6 pressurizing and feeding the stock solution when filling are provided between the feeding pump 3 and the branching part units 4. The branching part units 4 are connected to the storage tank 15 via a relief valve 7, and surplus stock solution is returned to the storage tank 15. Each of the filling parts 5 has a flow meter 5a, an electromagnetic on-off valve 5b and a liquid filling nozzle 5c. Filling by the respective filling parts 5 is controlled by filling control means 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a liquid-filling system and a liquid-filling nozzle for raw liquids having a low specific gravity, such as alcohol (eg, water-repellent liquid).

Various types of liquid filling systems are known in the past, which make it possible to easily save labor in the liquid filling process, eliminate measurement variations, and ensure the safety of filling operations without the complication of having to control the amount by the operator. There has been proposed a liquid cleaning agent filling device that has improved performance and improved reliability (see, for example, Patent Document 1).

JP-A-2000-62704

In such a filling system system, there is a demand to provide a plurality of filling points, to set a different filling amount for each filling point, that is, for each container to be filled, and to enable filling from a small amount to a large amount.

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid filling system and a liquid filling nozzle capable of performing filling from a small amount to a large amount at each filling point, and different filling amounts for each container to be filled.

According to the present invention, the undiluted solution for filling is sent to a branching unit having a plurality of filling parts by a feed pump through a pipe passage from a undiluted solution tank in which the undiluted solution for filling is stored to a branching unit, , a liquid filling system for filling each of a plurality of containers through the plurality of filling units, wherein each of the filling units is capable of moving up and down, a flow meter, an electromagnetic on-off valve, and a liquid filling nozzle inserted into the container. and are provided in order, and at the filling position where the tip of the liquid filling nozzle of the filling unit is inserted into the container, the electromagnetic on-off valve of the filling unit is opened to start filling, and the flow meter and filling control means for controlling the operation of closing the electromagnetic on-off valve and stopping filling for each of the filling sections when passage of the set filling amount is confirmed based on the signal of .

In this way, the filling amount can be independently controlled for each filling section of the branch unit, and a different filling amount can be set for each filling section. Therefore, it is possible to change the filling amount from a small amount to a large amount for each container to be filled.

In this case, the filling control means includes, for each filling part, filling start means for lowering the filling part from the standby position to the filling position, filling amount setting means for setting a set filling amount for filling the container, and A flow rate detecting means for receiving a signal from a flow meter and detecting that the passing flow rate passing through the flow meter and the set filling amount are equal; a position detecting means for detecting that the filling position has been reached; a signal from the position detecting means is received to open the electromagnetic on-off valve, and a signal from the flow rate detecting means is received so that the passing flow rate reaches the set filling amount. opening/closing control means for closing the electromagnetic opening/closing valve when they are equal to each other.

A storage tank for temporarily storing the undiluted solution and a pressure pump for pressurizing the undiluted solution in a filling direction are provided between the feed pump and the branch unit,

Preferably, the branch unit is connected to the storage tank through a return passage having a relief valve.

Further, it is desirable that the branch unit including the plurality of filling units be attachable to and detachable from a pipe passage downstream of the feed pump. As a result, the total number of containers that can be filled at the same time can be changed according to the installation location.

The stock solution tank stores a stock solution with a low specific gravity, the container has a small filling port into which the tip of the liquid filling nozzle is inserted, and the liquid filling nozzle A structure may be employed in which the diameter of the passage of the distal end portion inserted into the container is larger than the diameter of the passage of the portion connected to the branch unit.

In this way, since the filling speed is lowered at the tip of the liquid filling nozzle, even when the stock solution having a low specific gravity is filled, the stock solution is prevented from being spouted from the filling port.

The present invention provides a liquid filling nozzle used in the liquid filling system according to any one of claims 1 to 5, which comprises a connecting portion connected to the tube passage, and a tip portion inserted into the container. and the passage diameter of the tip portion is larger than the passage diameter of the connecting portion.

By doing so, it is possible to reduce the filling speed and prevent the stock solution from being spouted from the filling port of the container.

The connection portion has a lower end pipe, and a tip pipe forming the tip portion is welded all around to the lower end pipe, and the passage diameter of the tip pipe is larger than the passage diameter of the lower end pipe. can do.

According to the present invention, the filling amount can be managed for each filling section, and the filling amount can be changed from a small amount to a large amount for each container to be filled.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall explanatory diagram showing one embodiment of a liquid filling system according to the present invention; FIG. 3 is a block diagram showing the essential parts of the control system of the filling section in the liquid filling system according to the present invention; 1(a) is a perspective view of a container according to the present invention, and FIG. 1(b) is a plan view of the container. 1 is an explanatory diagram showing an embodiment of a liquid filling nozzle according to the present invention; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is an overall explanatory diagram showing one embodiment of a liquid filling system according to the present invention.

As shown in FIG. 1, a liquid filling system 1 has a liquid tank 2, from which liquid is sucked by a feed pump 3, and the sucked liquid is supplied to a plurality of filling sections 5 in a branch unit 4. , and a set filling amount is filled into each of the plurality of containers S through each of the plurality of filling units 5 . The stock solution tank 2 stores a stock solution having a low specific gravity, such as alcohol (for example, water-repellent liquid).

Between the feed pump 3 and the branch unit 4, a storage tank 15 for temporarily storing the stock solution and a pressurization pump 6 for pressurizing and sending the stock solution at the time of filling are provided. The filling speed can be increased or decreased by the pressure pump 6, and the filling speed can be adjusted. Since the storage tank 15 is provided separately from the stock solution tank 2, the stock solution tank 2 can be easily replaced.

A pipe passage on the downstream side of each branch unit 4 is connected to a storage tank 15 via a relief valve 7 so that surplus stock solution is returned to the storage tank 15 . When the supply pressure exceeds the set value by the relief valve 7, the undiluted solution is returned to the storage tank 15 to avoid unnecessary pressurization.

Check valves 8a and 8b are provided downstream of the feed pump 3 and the pressure pump 6, and liquid level gauges 9a and 9b are provided in the undiluted solution tank 2 and the storage tank 15, respectively.

Each filling unit 5 has a flow meter 5a capable of measuring the flow rate, an electromagnetic on-off valve 5b, and a liquid filling nozzle 5c inserted into the filling port Sa of the container S, and the filling unit 5 stands by. A well-known elevating mechanism can move up and down between the standby position where the container is set and the filling position where the container is set. Filling of the container S by each filling unit 5 is independently controlled by the filling control means 11 for each filling unit 5 (that is, for each container S).

When the tip of the liquid filling nozzle 5c is inserted into the container S and the container S is at the filling position where filling is performed, the filling control means 11 opens the electromagnetic on-off valve 5b to start filling, and the signal from the flow meter 5a When it is confirmed that the undiluted solution of the set filling amount has passed, the operation of closing the electromagnetic on-off valve 5b and stopping the filling is controlled for each filling section 5.

More specifically, as shown in FIG. 2, filling starting means for lowering the filling section from the standby position to the filling position and filling amount setting for setting the set filling amount to be filled into the container are provided for each filling section 5 . means 12, flow rate detecting means 13 for receiving a signal from the flow meter 5a and detecting that the passing flow rate passing through the flow meter 5a is equal to the set filling amount, and the tip portion of the liquid filling nozzle 5c of the filling section 5. A limit switch 10 (position detection means) for detecting that the is inserted into the container S has reached the filling position, and a signal from the limit switch 10 is received to open the electromagnetic on-off valve 5b, while a signal from the flow rate detection means 13 is received. An opening/closing control means 14 is provided for closing the electromagnetic opening/closing valve 5b when the received flow rate becomes equal to the set filling amount.

As shown in FIGS. 3A and 3B, the container S has a small filling port Sa, and the liquid filling nozzle 5c has a passage diameter (for example, an inner diameter of 5 mm) of the tip portion 5ca inserted into the container S. It is larger than the passage diameter (for example, the inner diameter of 4 mm) of the portion 5cb connected to the partial unit 4. As shown in FIG. As a result, the filling speed is reduced at the tip of the liquid filling nozzle 5c, so even if the stock solution has a low specific gravity, the stock solution is prevented from blowing out from the filling port Sa during filling. A liquid filling nozzle 5c with a nozzle outer diameter of 5.98 mm is used for the opening diameter of the injection port Sa of the container S of 6.2 mm, so that the tip of the nozzle is immersed in the liquid and foaming on the surface is reduced. It has become.

As shown in FIG. 4, the liquid filling nozzle 5c has a portion 5cb connected to the upstream side of the electromagnetic on-off valve 5b, which has a lower end pipe 5cc, and a tip pipe 5ca forming a tip portion with respect to the lower end pipe 5cc. It is welded all around (see part A in FIG. 4). The passage diameter of the tip pipe 5ca is larger than the passage diameter of the lower end pipe 5cc.

When the container S is set, the start switch (not shown) of the filling section 5 corresponding to the filling position is pushed, and the filling section 5 descends to the tip of the liquid filling nozzle 5c. The limit switch 10 senses that the part is inserted into the container S through the filling port Sa and that the filling part 5 is in the filling position where filling takes place.

The opening/closing control means 14 opens the electromagnetic opening/closing valve 5b for the filling section 5 in which the container S detected by the limit switch 10 is set. This initiates filling. When the flow rate of the filled liquid is detected through the flow meter 5a and a predetermined amount (set filling amount) of the undiluted solution is confirmed (flow rate detection means 13), the electromagnetic on-off valve 5b is closed and the filling is completed. be stopped. As a result, the container S is filled with a predetermined amount of the stock solution.

Then, the liquid filling nozzle 5c is lifted and returned to the initial position to enter the standby state.

Therefore, the filling amount can be managed for each filling part, and filling can be performed by changing the filling amount from a small amount to a large amount for each container to be filled. Therefore, it is also possible to fill a plurality of types of containers.

As described above, preferred embodiments of the present invention have been described with reference to the drawings, but various additions, changes, or deletions can be made without departing from the scope of the present invention.

For example, by using a hydraulic/water pressure block manifold or the like, the branching section unit 4 including a plurality of filling sections 5 can be attached to and detached from a pipe that is a pipe passage. Therefore, it is possible to add more if necessary. That is, in the above-described embodiment, the two branch units 4 are provided, and each branch unit 4 has three filling portions 5. However, in order to increase the number of filling portions, for example, three By detachably providing the branch unit 4 having two filling portions 5, the total number of filling portions can be increased. In this way, the number of containers that can be filled can be increased and the filling throughput can be increased.

1 liquid filling system 2 undiluted solution tank 3 feeding pump 4 branching unit 5 filling section 5a flow meter 5b electromagnetic on-off valve 5c liquid filling nozzle 5ca tip section 5cb section 5cc lower end pipe 6 pressure pump 7 relief valves 8a, 8b check valve 9a, 9b Liquid level gauge 10 Limit switch (position detection means)
11 Filling control means 12 Filling amount setting means 13 Flow rate detecting means 14 Opening/closing control means 15 Storage tank S Container Sa Filling port

Claims (7)

The undiluted solution for filling is sent from the undiluted solution tank in which the undiluted solution for filling is stored to the branching unit through a pipe passage to a branching unit having a plurality of filling parts by a feed pump, and in the branching unit, the plurality of A liquid filling system for filling each of a plurality of containers through a filling unit,
Each filling unit can be raised and lowered, and is provided with a flow meter, an electromagnetic on-off valve, and a liquid filling nozzle inserted into the container in this order,
At the filling position where the tip of the liquid filling nozzle of the filling section is inserted into the container, the electromagnetic on-off valve of the filling section is opened to start filling, and the set filling amount is passed based on the signal from the flow meter. A liquid filling system according to claim 1, comprising filling control means for controlling an operation of closing said electromagnetic on-off valve and stopping filling when confirmed, for each of said filling sections. The filling control means includes, for each filling part, filling start means for lowering the filling part from a standby position to a filling position, filling amount setting means for setting a set filling amount to be filled into the container, and and a filling position where the tip of the liquid filling nozzle of the filling section is inserted into the container. and a position detection means for detecting that the flow rate is equal to the set filling amount upon receiving a signal from the position detection means and opening the electromagnetic shut-off valve while receiving a signal from the flow rate detection means and receiving a signal from the flow rate detection means. 2. The liquid filling system according to claim 1, further comprising opening/closing control means for closing said electromagnetic opening/closing valve. A storage tank for temporarily storing the undiluted solution and a pressure pump for pressurizing the undiluted solution in a filling direction are provided between the feed pump and the branch unit,
the branch unit is connected to the storage tank through a return passage having a relief valve;
3. A liquid filling system according to claim 1 or 2. 5. The liquid filling system according to any one of claims 1 to 4, wherein the branch unit including the plurality of filling parts is attachable to and detachable from a pipe passage downstream of the feed pump. The stock solution tank stores a stock solution with a low specific gravity,
The container has a small filling port into which the tip of the liquid filling nozzle is inserted,
5. The liquid according to any one of claims 1 to 4, wherein the liquid filling nozzle has a passage diameter of a tip portion inserted into the container larger than a passage diameter of a portion connected to the branch unit. filling system. A liquid filling nozzle used in the liquid filling system according to any one of claims 1 to 5,
having a connecting portion connected to the tube passage and a tip portion to be inserted into the container;
A liquid filling nozzle used in a liquid filling system, wherein the passage diameter of the tip portion is larger than the passage diameter of the connecting portion. The connecting portion has a lower end pipe,
7. A liquid filling nozzle used in a liquid filling system according to claim 6, wherein a tip pipe forming said tip portion is welded all around to said lower end pipe, and said tip pipe has a passage diameter larger than that of said lower end pipe. .

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