JPS5952114B2 - Liquid supply device for charging valve chamber of reverse pressure liquid filling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a filling valve chamber liquid supply device for a counter pressure type liquid filling machine.

In a counter-pressure liquid filling machine, in which the filling valve chamber is moved up and down with an elevating mechanism relative to the fixed filling head of the filling device, and the filling valve chamber descends into contact with the filling container to fill the container, the filling liquid is liquid. Since the filling liquid flows into the filling valve chamber from the supply tube at a high flow rate, the filling liquid is violently disturbed in the filling valve chamber, and especially for liquids containing carbon dioxide, cold filling must be performed by lowering the liquid temperature and the filling valve chamber The seal and connection mechanism of the liquid supply tube that supplies filling liquid to the valve chamber is deformed and damaged by the vertical movement of the filling valve chamber, resulting in defects that make it unsustainable for long-term use.

The present invention is an attempt to improve these deficiencies by providing a filling valve chamber in a fixed filling head of a filling device so that it can be raised and lowered by an elevating mechanism, and filling the container by lowering the filling valve chamber into contact with the filling container. In the reverse pressure type liquid filling machine, a filling liquid supply hole is provided in the upper tangential direction of the cylindrical filling valve chamber, and the filling liquid supply hole and the liquid distributor are connected by a liquid supply tube having a flexible joint at both ends. This is a summary of what was done.

An embodiment of the present invention will be described with reference to the drawings. A shaft cylinder 2 fitted into the upper and lower fixed tubes 1 and 1 and rotated by an appropriate rotation mechanism (not shown) has an inner portion inside the fixed tubes 1, 1. An annular liquid distributor 3 having a circular cross section and communicating with the inside to form a fluid passage a and provided around the shaft cylinder 2 integrally therewith.
The liquid distributor 3 is connected to the fluid passage a through branch pipes 4 extending tangentially to the vertical cross section thereof and radially provided in the shaft tube 2.

The lower part of the lower fixed pipe 1 is connected to a filling liquid tank 8 via a pressure pump 6 and a liquid supply valve 7 controlled by the differential pressure control device 5, and the upper part of the upper fixed pipe 1 is connected to the differential pressure control device 5. The upper part of the liquid distributor 3 is connected to a pressurized gas supply device (not shown) via a pressurized gas control valve 9 that operates in conjunction with It is connected to the passage a by a pressurized gas supply pipe 10, and under the control of the differential pressure control device 5, a filled liquid storage layer that occupies most of the inside of the liquid distributor 3, and a small amount of pressurized gas storage layer C above the filled liquid storage layer. is formed.

Further, a pressurized air chamber 11 connected to a pressurized air supply device (not shown) and a vacuum chamber 13 connected to a vacuum pump 12 are fixed around the upper fixed pipe 1, and a filling device is attached to the shaft cylinder 2. 14 holding disks] 5 are attached so as to rotate together.

The filling device 14 is roughly divided into a filling head 16 fixed to a holding disk 15, a cylindrical filling valve chamber 17 that can be raised and lowered relative to the filling head 16, and an elevating mechanism 18 that raises and lowers the filling valve chamber 17. It is composed of

The filling head 16 is provided with a stepped through hole 19 for supplying pressurized gas, and a sealed cylinder 21 in which a piston 20 is fitted in the lower part of the stepped through hole 19, and the upper end of the through hole 19 is divided into two to supply pressurized gas. One of the gas switching valves 22 communicates with an annular pressurized gas distributor 23 and the other with an annular snift chamber 24, and a deaeration switching valve 25 is provided in the middle of the through hole 19. The through hole 19 is formed to be switchable with the annular suction air container 26.

Thus, the pressurized gas distributor 23 is connected to the pressurized gas supply pipe 10, and the suction air container 26 is connected to the vacuum chamber 13.
The snift chamber 24 is connected to a snift introduction chamber 29 provided around the lower fixed pipe 1 through a pipe 30, and the snift introduction chamber 29 is connected to the atmosphere through a pipe 31. are doing.

The lower part of the cylinder 21 is switchably connected to the upper part of the cylinder 21 and the atmosphere via a switching valve 32, and the upper part of the cylinder 21 is connected to the pressurized air chamber 11 via a pipe 33.

It is fixed to the piston 20 and has an upper end connected to the stepped through hole 1.
A filling valve chamber 17 is fixed to the lower end of the piston rod 34 which is fitted to the piston rod 9 so as to be slidable up and down.
The piston rod 34 is formed to be vertically movable by a lifting mechanism 18 provided in the filling head 16.

That is, the lifting mechanism 18 is a support frame 3 fixed to the filling head 16.
6, a lifting lever 37 that supports a piston rod 34 that is pivotally supported by the support frame 36, and a bending lever 38 whose bent portion is pivoted to the support frame 36, and the bending lever 38 is rotated clockwise by a spring 39. The energized roller 40 provided at the end of the long arm is regulated by a cam track 41, and the roller 42 at the end of the short arm fits into an arcuate guide hole 43 drilled in the lift lever 37. .

Accordingly, the filling head 16 rotates and the roller 40 of the bending lever 38 is vertically restricted by the cam track 41, so that the screw I/rod 34 can be raised and lowered.

A filling liquid supply hole 44 is provided in the surface line direction of the upper inner wall of the filling valve chamber 17 , and the filling liquid supply hole 44 is connected to the lower part of the liquid distributor 3 by a liquid supply tube 46 .

In a second aspect of the present invention, connecting portions of the liquid supply tube 46 to the filling supply hole 44 and the liquid distributor 3 are formed as flexible joints 45, 45, respectively, as connection means for the liquid supply tube 46, and the filling valve chamber 17 is Smooth vertical movement.

Further, inside the filling valve chamber 17, a flow valve 48 for opening and closing the filling hole 47 is provided with a spring 49 so as to maintain an open state at all times.
A vent tube 50 communicating with the vent tube 50 is provided so as to be biased downward by a spring 51.

Cams 5J3 and 53 provided on a double operating rod 52 are respectively formed in front of the flow valve 48 and the vent tube 50 so as to be able to engage with each other. When the vent tube 50 is engaged, the flow valve 48 is closed and the vent tube 50 is held in the raised position, and when the engagement is released, the flow valve 48 is opened by the spring 49 and the vent tube 50 is projected downward by the spring 51. do.

In the figure, 54 is a seal pad which is provided at the lower edge of the filling valve chamber 17 and comes into contact with the mouth edge of the filling container A, 55 is an operating device for the pressurized gas switching valve 22, and 56 is a guide for the pressurized gas switching valve 22. 57 is an operating cam of the deaeration switching valve 25, 58 is an operating device for the switching valve 32, 59 is a guide rail for the switching valve 32, 60 is an operating device for the double operating rod 52, and 61 is a guide rail for the double operating rod 52. It is.

) Since the embodiment of the present invention can be configured as described above, the lifting mechanism 18 is regulated by the cam track 41 and supported by the lifting lever 37 while the upper and lower parts of the piston 20 of the cylinder 21 are in communication with the switching valve 32. The seal pad 54 of the filling valve chamber 17 is lowered by lowering the piston rod 34
When the gas comes into contact with the mouth edge of the filling container A, the deaeration switching valve 25 is actuated by the operating cam 57 to connect the stepped through hole ]9 to the suction air container 26, and the inside of the filling container A is opened to the air container 26. The air in the filling container A is connected to the vacuum pump 1.
2, vent tube 50, through hole 35, stepped through hole 19, suction air container 26, pipe 28 and vacuum chamber 13
Degassed through.

Next, when the deaeration switching valve 25 returns to its original state, the pressurized gas switching valve 22 is actuated by the actuating device 55 to communicate the stepped through hole 19 with the pressurized gas distributor 23, thereby opening the pipe 27 and the pressurized gas supply pipe 10. At the same time, the switching valve 32 pressurizes the inside of the filling container A to the same pressure as the inside of the liquid distributor 3 via the actuating device 5.
8, the lower part of the piston of the cylinder 21 is communicated with the atmosphere, and the piston 20 is pressurized by pressurized air in the upper part of the piston, thereby pressurizing the filling valve chamber 17 into the filling container A via the piston rod 34.

Next, the double actuating rod 52 is actuated by the actuating device 60, and its cams 53, 53 release the lock of the vent tube 50 and the flow valve 48, causing the vent tube 50 to protrude into the filling container A, and at the same time cause the flow to flow. The valve 50 is opened and the liquid in the filling valve chamber 17 is poured into the filling container A from the filling hole 47.
Fill it.

When filling is performed and the liquid level in the filling container A is reached, the vent tube 50 is closed and the gas pressure and liquid pressure at the top of the filling container A are balanced and the liquid level rises to the liquid level in the liquid distributor 3 and the liquid stops flowing down. , the double operating rod 52 returns to raise the vent tube 50, and the flow valve 48 closes, allowing the liquid in the vent tube 50 to fall naturally into the filling container A.

Thereafter, the pressurized gas switching valve 22 is switched to connect the stepped through hole 19 to the atmosphere via the sniff l-chamber 24, pipe 30, sniff introduction chamber 29, and pipe 31, bringing the filling container A to normal pressure, and switching. The valve 32 is also switched to connect the upper and lower parts of the piston 20 of the cylinder 21 to the filling valve chamber 17.
After releasing the pressurizing action on the filling container A, the lifting mechanism 18 raises the re-piston rod 34 to open the filling valve chamber 1.
7 is separated from the filling container A to complete the filling operation.

Thus, the supply of filling liquid to the filling valve chamber 17 is fed from the filling liquid tank 8 through the lower fixed pipe 1 and the branch pipe 4 to the liquid distributor 3 without being rectified in the tangential direction, and further to the liquid distributor. 3 from the liquid supply tube 46 from the upper tangential direction of the filling valve chamber 17 as rectification in a fixed direction. In this case, the differential pressure control device 5 controls the pressurization control valve 9 to This is to control and maintain the water head pressure at a constant pressurized state.

The first invention is a counter-pressure liquid filling machine that lifts and lowers a filling valve chamber to contact and fill a filling container, and a filling liquid supply hole is provided in an upper tangential direction of the filling valve chamber, and a liquid supply tube is connected to the filling valve chamber. Since the inflowing filling liquid becomes a rotating flow in a fixed direction, it is gradually decelerated downward and transferred to the flow valve at the bottom, so foaming is reliably prevented without the violent turbulence caused by jet flow as in conventional systems. The liquid containing carbon dioxide gas or the like can be filled efficiently and at high speed without being limited to cold filling as in the conventional method.

In addition, in the second invention, since the liquid supply tube is configured to feed the filling liquid from the liquid distributor to the filling valve chamber through the flexible joints at both ends, the seal portion and the The connection part is not deformed or damaged, and can operate smoothly and maintain sufficient durability.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of an embodiment of the present invention, FIG. 2 is a side view of the same main part, and FIG. 3 is a cross-sectional plan view of the same main part. 14... Filling device, 16... Filling head, 17... Filling valve chamber, 18... Lifting mechanism, 44... Filling Liquid supply hole, 45...
...Universal joint, 46...Liquid supply tube,
A filled container.

Claims (1)

[Claims] 1. A reverse pressure liquid filling machine in which a filling valve chamber is provided in a fixed filling head of a filling device so that it can be raised and lowered by an elevating mechanism, and the filling valve chamber descends into contact with a filling container to fill the container. In the filling valve chamber liquid supply device, a filling liquid supply hole is provided in the tangential direction of the upper inner wall surface of the cylindrical filling valve chamber, and the filling liquid supply hole is connected to a liquid distributor containing pressurized liquid by a liquid supply tube. . 2. In a counter-pressure liquid filling machine in which a filling valve chamber is provided in a fixed filling head of the filling device so as to be movable up and down by an elevating mechanism, and the filling valve chamber is brought into downward contact with a filling container for filling, a cylindrical filling valve is used. A filling valve chamber supply in which a filling liquid supply hole is provided in the tangential direction of the upper inner wall surface of the chamber, and the filling liquid supply hole and a liquid distributor containing pressurized liquid are connected by a liquid supply tube having a flexible joint at both ends. liquid equipment.