JPH0333596B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in counterpressure liquid fill valves.

Recently, as containers have become more diverse, the frequency of replacing filling valves has increased.

By the way, the parts that must be changed when the container is changed are the diameter of the container sealing member, the cross-sectional diameter of the liquid passage hole, and the cross-sectional diameter of the pressure chamber formed between the sliding cylinder and the filling valve cylinder. Conventionally, the entire filling valve has been replaced each time, although other parts can be shared. Therefore, it is necessary to perform troublesome and extra work such as attaching and detaching the operating lever on the top of the filling valve and attaching and detaching the lifting device of the sliding tube, and it is difficult to perform such replacement work for each filling valve of the filling machine. Not only does this significantly reduce efficiency, but it is also economically undesirable to replace parts that can be shared.

The present invention is an attempt to improve such defects, and involves fitting a sliding tube that can be slid freely using an up/down lever into the filling valve tube fixed to the tank, and touching the lower end of the sliding tube to the rim of the container. In the counter-pressure liquid filling valve which opens and closes the flow valve to fill a container with the liquid in the tank, the filling valve cylinder is fixed to the tank and includes a valve base cylinder having a flow valve and the valve base cylinder. A valve outer cylinder which is removably attached to the outside of the valve outer cylinder and has a liquid conduction hole, and a sliding cylinder having a pressure chamber formed between the outer side of the valve outer cylinder and the tip thereof is slidable. The gist of the present invention is that an engagement recess into which the elevating lever engages is formed on both sides of the sliding tube, and an attachment/detachment notch is formed in series with the engagement recess.

An embodiment of the present invention will be described with reference to the drawings. At the bottom of a high-pressure annular tank 1 containing liquid, valve base cylinders 2 are fixed with stud bolts 3 at regular intervals, and at the lower end of the valve base cylinder 2 are flow valves. A valve outer cylinder 8 is provided with a liquid flow hole 5 which is opened and closed by the valve base cylinder 2, and further has a liquid flow hole 7 provided in a small diameter cylinder part 6 at the tip on the outside of the valve base cylinder 2, which communicates with the liquid flow hole 5. is removably fitted.

The attachment/detachment mechanism includes a mounting piece 10 having a notch 9 on both sides of the upper end of the valve outer cylinder 8, and a clamping piece 11, respectively. Piece 11
It is installed by clamping and fixing it with a fixing piece 13 that is tightened with a lock nut 12, and when removing it, loosen the lock nut 12 and rotate the valve outer cylinder 8 a little using the notch 9. It is constructed so that it can be separated from the two.

A sliding cylinder 15 having a container sealing member 14 at the lower peripheral edge is fitted into the lower outer side of the valve outer cylinder 8, and an engagement recess 17 having notched surfaces 16 formed on both outer sides of the sliding cylinder 15. The elevating lever 18 is engaged with the elevating lever 18, and the elongated guide hole 1 bored in the elevating lever 18
8' a flexing lever 20 actuated by a cam track 19;
The roller 20' at the tip is fitted to form the lifting lever 18 so as to be able to move up and down, and the container sealing member 14 of the sliding tube 15 is formed.
It is configured such that it can be pressed against the rim of the container A.

Further, the valve outer cylinder 8 is provided with a counter conduction hole 21 and a snift conduction hole 22, and the upper end of the counter conduction hole 21 allows carbon dioxide gas to flow through the counter conduction holes 21' and 21'' in the valve base cylinder 2 and the bottom of the tank 1, respectively. It communicates with the chamber 23, and its lower end opens at the lower surface of the small diameter cylinder part 6 of the valve outer cylinder 8, and the upper end of the snift passage hole 22 communicates with the snift passage hole 22', 22 of the valve base cylinder 2 and the bottom of the tank, respectively. The pressure chamber 25 is connected to the snift chamber 24 through a pressure chamber 25 at its lower end, which is formed by the sliding tube 15 and the narrow cylinder portion 6.
The counter conduction hole 2
A counter valve 26 and a snift valve 27 are provided in the snift passage hole 22'' and the snift passage hole 22'', respectively, and the actuating parts 26' and 27' thereof are opened and closed by controlling a control plate 29 operated by a control device 28. ing.

In the figure, 30 is a vent stem having a vent passage 31 fixed to the center of the valve base cylinder 2;
is a vent pipe having a float valve 33 provided at the lower end of the vent stem 30, 34 is a holding arm of the vent pipe 32, and 35 is a container table that rotates in synchronization with the filling valve.

Since the embodiment of the present invention is constructed as described above, when changing the size of the container A, the lock nut 12 is loosened and the valve outer cylinder 8 is slightly rotated to release its fixed part. As a result of the operation, the lifting lever 18 is disengaged from the engagement recess 17 of the sliding tube 15 using the notch surface 16 for attachment and detachment, and is separated from the valve base tube 2, creating a valve outer tube adapted to the new container. 8 is fitted into the valve base cylinder 2 and the filling operation is performed again.

In the present invention, a filling valve cylinder is formed of a valve base cylinder having a flow valve fixed to a tank, and a valve outer cylinder detachably fitted on the outside of the valve base cylinder and having a liquid passage hole 7. The elevating lever is removably formed by using the engagement recesses formed on both sides of the sliding tube fitted into the valve outer cylinder and the attachment/detachment notch connected to the engagement recesses, so that it can be easily attached and removed when replacing the container. It is possible to replace only the valve outer cylinder and sliding cylinder, which have or form the container seal, liquid passage hole, and pressure chamber, respectively, without having to replace the entire filling valve each time, and the entire filling valve can be replaced. There is no need to attach or remove extra parts during replacement, which shortens the replacement work and improves work efficiency, and the parts that can be shared, such as the flow valve and vent stem, are kept to a minimum by leaving them in the valve base. It has excellent features such as being able to use only a limited number of replacement parts, simplifying the structure, and being extremely economically effective.

[Brief explanation of the drawing]

Fig. 1 is a partially cut-away longitudinal sectional front view of the present invention, Figs. 2 and 3 are cross-sectional bottom views of the same main parts, Fig. 4 is a front view of the main parts, and Fig. 5 is a front view of the main parts. FIG. DESCRIPTION OF SYMBOLS 1... Tank, 2... Valve base cylinder, 4... Flow valve, 7... Liquid conduction hole, 8... Valve outer cylinder, 15... Sliding cylinder, 16... Notch surface, 17...
Engagement recess, 18... Lifting lever, 25... Pressure chamber.

Claims (1)

[Claims] 1 Fit a sliding tube that can be slid freely using a lift lever into the filling valve tube fixed to the tank, and open and close the flow valve by touching the lower end of the sliding tube to the rim of the container to fill the container with the liquid in the tank. In the counter pressure type liquid filling valve, the filling valve cylinder is fixed to the tank and is removably superimposed on a valve base cylinder having a flow valve and the outside of the valve base cylinder, and has a liquid conduction hole. A sliding cylinder is formed with a valve outer cylinder having a valve outer cylinder and a pressure chamber is formed on the outside of the valve outer cylinder and a pressure chamber between the tip thereof, and is slidably fitted thereinto, and the elevating and lowering cylinders are mounted on both sides of the sliding cylinder. A reverse pressure type liquid filling valve that has an engagement recess that engages with a lever and an attachment/detachment notch that is connected to the engagement recess.