JPH07165217A - Water-injecting device - Google Patents

Abstract

PURPOSE:To prevent color change from occurring to seal members of a bag by preventing waterdrops from dripping onto the seal members during and after injection of water. CONSTITUTION:A water-injecting nozzle 30 is moved downward into a bag during injection of water by operation of an ascending/descending mechanism 40, and water is supplied from a water tank 10 into the bag through the water-injecting nozzle 30. Filling substances are added into the bag and residual water in the water-injecting nozzle 30 is blown away by compressed air after finishing of the injection, and the water-injecting nozzle 30 is lifted up to a retreat position by the ascending/descending mechanism 40. As water is not sprayed over seal members provided in extension to a place near the upper opening of the bag during the injection, or waterdrops are not sprayed from the water-injecting nozzle 30 over the seal member provided in extension to the place near the upper opening of the bag after the injection, color change be prevented from occurring to the seal members. As a water-retaining part, warped approximately in U shape, is provided to the lower end of the water-injecting nozzle for retaining the residual water in the water-injecting nozzle, the residual water that is not blown away by compressed air after the injection can be prevented from dropping from the water-injecting nozzle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water injection device for adding water to a packing packed in a bag or the like. The filler is, for example, a powder or granular material such as a resin powder or granular material.

[0002]

2. Description of the Related Art As a conventional water injection device, water is generally supplied into a bag through a water supply pipe and a water injection nozzle, and water is added to a filling material in the bag.
Water is added to the filling in an amount of about 1 to 1.3 L. The reason for adding water is to prevent the filling from blocking spontaneously solidifying. Further, a sealing member is extended around the upper opening of the bag.

[0003]

However, in such a conventional water injection device, there is a problem that the seal member of the bag is discolored by water droplets dripping from the water injection nozzle after the water injection is completed. The present invention has been made in view of such a conventional problem, during water injection, the water injection nozzle is advanced into the bag to prevent the seal member from being exposed to water, and after the water injection, compressed air is used. An object of the present invention is to provide a water injection device capable of preventing discoloration of a seal member by spouting water in a water injection nozzle so that water droplets do not drip from the water injection nozzle.

[0004]

Means for Solving the Problems The gist of the present invention for achieving such an object is to: 1 In a water injection device for adding water to a filling material packed in a bag or the like, A water injection nozzle (30) for injecting water, and the water injection nozzle (30) is moved up and down so that the tip end portion of the water injection nozzle (30) is in an advanced position where it has advanced into the bag and a retracted position where it has been retracted upward from the bag. An elevating mechanism (40) capable of moving forward and backward, a water supply source (10) for supplying water to the water injection nozzle (30), and an air supply source (10) for supplying compressed air to the water injection nozzle (30). 20) and a switching mechanism (19, 26) capable of switching the water supply source (10) and the air supply source (20) and connecting to the water injection nozzle (30). apparatus.

2 At the tip of the water injection nozzle (30),
The water injection device according to claim 1, characterized in that the water injection device (30) is curved in a substantially U shape to form a water reservoir (35) capable of accumulating residual water in the water injection nozzle (30).

[0006]

In the water injection, the water injection nozzle (30) is advanced to the inside of the bag by the elevating mechanism (40), and the water injection nozzle (30) is moved by the switching mechanism (19, 26). The water supply source (10) is in a connectable state.

Water supply nozzle (30) from water supply source (10)
Through, the water is supplied to the bag and added to the filling material in the bag. At this time, water does not splash on the seal member extending around the upper opening of the bag.

After completion of water injection, a switching mechanism (19, 26)
By this, the air supply source (20) can be connected to the water injection nozzle (30), and the water remaining in the water injection nozzle (30) becomes
Blow away with compressed air. After this, the lifting mechanism (4
When the water injection nozzle (30) is raised to the retracted position by (0), water does not drip from the water injection nozzle (30) and water drops do not drip on the seal member.

At the lower end of the water injection nozzle (30), approximately U
In the case where the water reservoir (35) capable of storing the residual water in the water injection nozzle (30) is formed by curving in a character shape, the residual water remaining in the water injection nozzle (30) without being blown away by the compressed air after the water injection. However, since it collects in the water pool portion (35) and does not drip from the water injection nozzle (30), no water droplets drip on the seal member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention. As shown in the drawing, the water injection device according to the present embodiment is for adding water to the filling material in the bag after filling the filling material in the bag.

This water injection device is provided with a water injection tank 10 as a water supply source and a compressor 20 as an air supply source for supplying compressed air. Water injection tank 10
Is connected to a water supply source (not shown) via a filter 12, a stop valve 14, and a water supply solenoid valve 16. A solenoid valve 18 is connected to the outlet of the water injection tank 10, and one end of a solenoid valve 19 for water injection is connected to the solenoid valve 18. The water injection tank 10 is provided with a float switch 11 for confirming a fixed amount of water injection. Water injection tank 10
The amount accumulated in is set to about 1 to 1.3L. A stop valve 22 is connected to the compressor 20, and the stop valve 22 is connected to the upper space side of the water injection tank 10 via a pressure reducing valve 23 and a solenoid valve 24 for pressurized air. Similarly, the stop valve 22 includes a pressure reducing valve 25.
Also, it is connected to the other end of the electromagnetic valve 19 for water injection through the electromagnetic valve 26 for air blow. The solenoid valve 19 for water injection and the solenoid valve 26 for air blow constitute a switching mechanism.

A water injection nozzle 30 for injecting water into the bag is connected to the other end of the water injection solenoid valve 19 via a flexible tube member 31. The water injection nozzle 30 is incorporated in the chute body 50. A lower opening 52 is opened at the lower end of the chute body 50.
A pair of open / close chute members 55 for opening and closing the lower opening 52 are provided on the peripheral edge portion of the lower opening 52 by widening and narrowing the mutual intervals by the retracting operation of the output rod 57 of the air cylinder 56. A pipe for supplying compressed air of the air cylinder 56 is connected to the stop valve 22 via a solenoid valve 58. An auto switch 59 is provided for detecting the retracting operation of the output rod 57 of the air cylinder 56.

Inside the chute body 50, the water injection nozzle 30
Is moved up and down to move the tip end 32 of the water injection nozzle 30 into the bag through the lower opening 52 and the retracted position where the tip 32 is retracted from the bag into the chute body 50 through the lower opening 52. It is provided. The pipe for supplying compressed air of the lifting cylinder 42 of the lifting mechanism 40 has a stop valve 2 via an electromagnetic valve 44 for lifting the nozzle.
Connected to 2. A proximity switch 45 is provided for detecting the lifting operation of the lifting cylinder 42. As shown in FIG. 2, at the lower end portion 32 of the water injection nozzle 30, a water pool portion 35 that is curved in a substantially U shape and can store the residual water in the water injection nozzle 30 is formed, and the water pool portion 35.
The discharge portion 36 is formed so as to be curved in an inverted U-shape continuously, and the lower end discharge port 37 thereof faces downward.

Next, the operation will be described with reference to FIG. Before filling and before water injection, open the stop valve 14,
Set the water injection operation select switch (not shown) to "ON".
Next, when the solenoid valve 16 for water supply is turned on, water is supplied to the water injection tank 10. When the amount of water in the water injection tank 10 becomes a fixed amount, the float switch 11 is turned on, and it is detected that the amount of injected water has become a fixed amount, whereby the solenoid valve 16 for water supply is turned off.

Next, it is confirmed by the auto switch 59 that the pair of open / close chute members 55 are open,
When the nozzle lift solenoid valve 44 is turned on, the lift cylinder 42 operates to lower the water injection nozzle 30 to the advanced position, and the lower end 32 of the water injection nozzle 30 advances into the bag through the lower opening 52. . Next, when the solenoid valve 24 for pressurized air is turned on, pressure is applied to the water injection tank 10, and the filling is discharged into the bag for a certain period of time through the lower opening 52 of the chute body 50. After a lapse of time, the solenoid valve 19 for water injection is turned on. As a result, the water injection tank 1
From 0, through the water injection solenoid valve 19 and the tube member 31, through the water injection nozzle 30, water is supplied into the bag,
It is added to the filling in the bag. At this time, the water injection nozzle 30
Since it has advanced into the bag, water is not splashed on the seal member extending around the upper opening of the bag.

When the solenoid valve 19 for water injection is also turned off after the solenoid valve 24 for pressurized air is turned off, the solenoid valve 26 for air blow is turned on and the air supply source 20 can be connected to the water injection nozzle 30. The residual water in the water injection nozzle 30 is blown off by the compressed air. After this, the solenoid valve 44 for raising and lowering the nozzle
When is turned off and the water injection nozzle 30 is raised to the retracted position by the elevating mechanism 40, water does not drip from the lower end discharge port 37 of the water injection nozzle 30 and water drops do not drip on the seal member. Further, even if some residual water is present in the water injection nozzle 30, the residual water remains as it is at the lower end outlet 37.
Since it collects in the water pool portion 35 without dripping from it, it does not hang down on the seal member as well.

When the water injection nozzle 30 moves backward, the solenoid valve 44 for raising and lowering the nozzle is turned on, and it is confirmed that the water injection nozzle 30 has moved to the retracted position. Next, the chute main body 50 rises for a certain period of time, and after a certain time, the air cylinder 56 operates to close the pair of open / close chute members 55 and close the lower opening 52 of the chute main body 50.

[0018]

According to the water injection device of the present invention, during water injection, the water injection nozzle is advanced to the inside of the bag by the elevating mechanism, and the water is injected from the water supply source into the bag. Water is supplied to the filling material in the bag, and after the water injection is completed, the residual water in the water injection nozzle is blown off by compressed air, and then the elevating mechanism is used to raise the water injection nozzle to the retracted position. Therefore, water does not splash on the sealing member extending around the upper opening of the bag during water injection, and water drops do not drip from the water injection nozzle onto the sealing member after water injection, preventing discoloration of the sealing member. You can

Further, since a water pool portion is formed at the lower end of the water injection nozzle so as to be able to store the residual water in the water injection nozzle in a substantially U-shape, the water is not blown away by the compressed air after the water injection and enters the water injection nozzle. The remaining residual water accumulates in the water reservoir and does not drip from the water injection nozzle, so that no water droplets drip on the seal member, and from this point also, discoloration of the seal member can be prevented.

[Brief description of drawings]

FIG. 1 is an overall conceptual diagram of a water injection device showing an embodiment of the present invention.

FIG. 2 is a front view of a water injection nozzle showing an embodiment of the present invention.

FIG. 3 is a flowchart showing an embodiment of the present invention.

[Explanation of symbols]

 10 ... Water injection tank (water supply source) 14, 22 ... Stop valve 16 ... Water supply solenoid valve 19 ... Water injection solenoid valve (switching mechanism) 20 ... Compressor (air supply source) 23, 25 ... Pressure reducing valve 24 ... Solenoid valve for pressurized air 26 ... Solenoid valve for air blow (switching mechanism) 30 ... Water injection nozzle 32 ... Lower end of water injection nozzle 35 ... Water pool 40 ... Lifting mechanism 42 ... Lifting cylinder 44 ... Solenoid valve for lifting nozzle 50 ... Shoot main body

Claims (2)

[Claims] 1. A water injection device for adding water to a filling filled in a bag or the like, in which a water injection nozzle for injecting water into the bag, and the water injection nozzle are moved up and down, and the tip of the water injection nozzle is moved. The elevating mechanism capable of advancing and retracting to the advancing position where the part has advanced into the bag and the retracting position retracting upward from the bag, a water supply source for supplying water to the water injection nozzle, and compressed air to the water injection nozzle. A water injection device comprising: an air supply source for supplying the water; and a switching mechanism that switches between the water supply source and the air supply source and is connectable to the water injection nozzle. 2. The water injection device according to claim 1, wherein a water pool portion is formed at a lower end portion of the water injection nozzle so as to be curved in a substantially U shape so as to store residual water in the water injection nozzle.