JPH0619519Y2 - Filling valve opening / closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a device for opening and closing a filling valve of a gas filling filling machine for filling carbonated beverages and the like in a container.

[Prior Art] A conventional device for opening and closing a filling valve of a gas filling and filling machine is
An inner lever that engages the protruding end of the filling valve installed at the bottom of the filler bowl into the filler bowl, and a shaft that is integral with this lever and that protrudes outward through the side wall of the filler bowl. An outer lever fitted to the outer protruding end of the shaft to rotate integrally with the shaft. The outer lever comes into contact with the cam and rotates between the open position and the closed position. When the outer lever is in the open position, the inner lever rotates upward to move the filling valve. The charging valve body is pushed upward by the spring to fill it, and when the outer lever is in the closed position, the inner lever rotates downward and pushes down the valve body against the spring to shut off the gas passage. Has become (actual public Sho 60-1
No. 119).

[Problems to be Solved by the Invention] In such a conventional opening / closing device, the outer lever keeps the opening / closing position by the frictional force of the spring in the thrust direction. Therefore, when the liquid to be filled in the container is a carbonated beverage or the like, the high pressure gas is stored together with the liquid in the filler bowl, so the liquid valve is completely sealed by the internal pressure, but the same filling machine is used. In the case of also being used for so-called non-pressure filling in which the high pressure gas is not filled, there is a fear that the seal of the liquid valve may be incomplete.

The present invention has been made in view of the above-mentioned drawbacks, and an object thereof is to provide an opening / closing device for a filling valve capable of reliably sealing a liquid valve without the internal pressure of the filler bowl.

[Means for Solving the Problems] An opening / closing device for a filling valve according to the present invention is a filling valve provided at a bottom portion of a filler bowl, a rotary shaft penetrating a side wall of the filler bowl, and a filler bowl of the rotary shaft. A shift lever provided on the inner side and engageable with the filling valve and an outer side of the rotation shaft on the filler bowl are opened and closed by rotating the shift lever through a predetermined angle through the rotation shaft. The operating lever is provided with a tension spring that is stretched between the filler bowl side and the operating lever side and that holds the shift lever in the open position and the closed position of the filling valve. Relative to the operating lever, and the intermediate plate is interposed between the operating lever and the filler bowl to fix it to the rotating shaft and A protrusion is fitted to one of the plates, and the other is fitted with this protrusion to form a guide path that can move relatively by a predetermined angle, and a stopper that restricts the rotation of the filling valve of the intermediate plate above the angle It is provided.

[Operation] In the filling valve opening / closing device according to the present invention, the rotation of the actuating lever is transmitted to the intermediate plate via the projection and the guide path by an amount exceeding the length of the guide path, and the rotation of the intermediate plate is Stopped by a stopper. The shift lever is
The filling valve is opened and closed by being rotated by the rotation angle of the intermediate plate, and when the valve is closed, the force of the spring acts in the direction of closing the valve.

[Embodiment] The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a longitudinal sectional view of a filling valve opening / closing device according to an embodiment of the present invention, and FIG. 2 is a front view. In the figure, (2) is a side wall of the filler bowl (1), and a hole (2a) penetrating the side wall.
A bush (4) is fitted in the bush (4), and a shaft (6) is rotatably supported in the bush (4). The bush (4) has a boss (4a) formed on the outer surface side of the filler bowl side wall (2), and is fixed to the filler bowl side wall by a pin (8) at this portion.
A nut (10) is screwed onto the outer circumference on the inner surface side.
The wall surface is sandwiched between the (10) and the boss (4a) and fixed to the side wall of the filler bowl (1). In addition, the seal member
The airtightness inside and outside the filler bowl is maintained by (12), (14) and (16).

A shift lever (inner lever) (18) that engages with the upper surface of the charging valve body at the upper end of the filling valve (not shown) is integrally provided at the end of the shaft (6) on the inner side of the filler bowl. An intermediate plate (22) is fitted to the end of the coaxial (6) on the outer side of the filler bowl via a washer (20), and an actuating lever (26) is fitted to the outside thereof via a washer (24). . The actuating lever (26) is configured to rotate freely with respect to the shaft (6), while the intermediate plate (22) is connected to the shaft (6) by a key (28) so as to rotate integrally. It has become.

The intermediate plate (22) is formed with an arc-shaped elongated hole (30),
In addition, the surface of the operating lever (26) facing the intermediate plate (22)
The protrusion (32) is attached to the (26a), and the tip end of the protrusion is fitted into the elongated hole (30). Furthermore, the intermediate plate (22)
Another arcuate hole (34) is formed in this, and the projection (36) provided on the surface (4b) of the boss (4a) on the side of the intermediate plate (22) is fitted therein. Therefore, the intermediate plate (22) has an angle (α) at which the protrusion (36) can move in the hole (34) with respect to the bush (4) fixed to the filler bowl (1) and its wall surface (2). It is designed to be able to rotate only relative to
In the case of (26), the protrusion (32) has a long hole (3
0) (that is, the guide path of the protrusion (32)) can be relatively rotated by an angle (β) capable of moving.

The bush (4) has a flange (4c) on a part of the boss (4a).
Is formed on the flange (4c), and the fixing pin (38) is mounted on the flange (4c), while the similar pin (40) is also mounted on the outwardly enlarged portion (26b) of the operating lever (26). A coil spring (42) is arranged between the pins (38) and (40). Both of these pins (38), (40) are located in a substantially symmetrical position with respect to the shaft (6), so that the actuating lever (26) is acted upon by the pulling force of the spring (42) and the fixing pin (38). (6)
Rotation in both directions is given to the line (l) connecting and.

The operation of the opening / closing device having the above configuration will be described. FIG. 2 shows the operating lever (26) when the filling valve is opened,
This shows the position of the shift lever (18), etc., and when the operating lever (26) is rotated in this direction in the direction to close the valve (counterclockwise direction), it is attached to the operating lever (26). The protrusion (32) moves counterclockwise in the elongated hole (30) of the intermediate plate (22). Meanwhile, the intermediate plate (22) and the shaft (6) and the shift lever (18) do not rotate. The actuating lever (26) and the protrusion (32) rotate further, and the protrusion (32) becomes the slot (30).
When hitting the front end face (30a) in the rotation direction of the, the rotational force of the protrusion (32) is transmitted to the intermediate plate (22), and the intermediate plate (22)
Rotates with the actuating lever (26). When the intermediate plate (22) is rotated in this manner, the hole (34) of the intermediate plate (22) into which the protrusion (36) of the boss (4a) is fitted is counterclockwise with respect to the protrusion (36). When moving in the rotation direction and the rear end surface (34a) of the hole (34) in the rotational direction hits the protrusion (36), the intermediate plate (22) and the operating lever (26) stop. The rotation of the intermediate plate (22) by the above-mentioned angle (α) is performed by the shift lever via the shaft (6).
(18), the valve body (not shown) is pushed down to close the filling valve. At this time, the shift lever (18)
The force of the spring (42) acts in the direction of closing the filling valve via the shaft (6), the intermediate plate (22) and the actuating lever (26).

When the filling valve is opened, the actuating lever (26) is rotated clockwise from the position shown by the phantom line in FIG. This rotation is transmitted to the intermediate plate (22) by the engagement between the protrusion (32) and the slot (30) after the actuation lever (26) rotates by the angle (β), and then the intermediate plate (22). Is rotated by an angle (α) to stop when the hole (34) engages with the protrusion (36) and returns to the state of FIG. As described above, according to the present embodiment, even in the case of pressureless filling, the force of the spring acts on the shift lever when the filling valve is closed, so that the sealing performance of the liquid valve can be improved. .

Also, if the actuating lever is rotated by the amount of rotation of the shift lever required to open and close the filling valve without providing an intermediate plate, the amount of rotation will be small, so the spring will cause the operating lever to move to the open position of the filling lever. Also, it was difficult to stably hold the valve in the closed position and there was a risk of malfunction.However, as in the above embodiment, the rotation angle of the shift lever required to open and close the filling valve with the intermediate plate interposed. I gave the operating lever a lot more rotation than
The filling valve can be stably held at the open position and the closed position, and reliable switching can be performed.

The long hole (30) and the hole formed in the intermediate plate (22)
The length of (34) is not limited to that shown in the figure. Hole (3
The length of 4) is determined by the angle of rotation required for the shift lever (18) to open and close the fill valve, and the slot (30) has an actuating lever (26) to allow the snap action of the spring (42). And the shift lever (18)
It suffices to have a length necessary to absorb the difference from the rotation angle for operating the. Also, the protrusion (36) and hole (34) of the boss (4a)
The rotation of the intermediate plate (22) was stopped by the engagement with the
It is also possible to restrict rotation of (22) beyond a predetermined angle. Further, the one fixing position of the spring (42) is not limited to the flange (4c) of the bush (4), and may be the wall surface of the filler bowl or the like. In addition, the protrusion (32) has an intermediate plate (22).
And an elongated hole (30) may be formed in the actuating lever (26). However, in this case, it goes without saying that the position of the protrusion in the elongated hole in the state of FIG. 2 is on the opposite end side in the elongated hole.

[Effects of the Invention] As described above, according to the present invention, the operating lever is made rotatable relative to the rotary shaft, and the intermediate plate is interposed between the operating lever and the filler bowl and fixed to the rotary shaft. In addition, a projection is formed on one of the actuating lever and the intermediate plate, and the projection is fitted on the other to form a guide path that is relatively movable by a predetermined angle, and the opening angle of the filling valve of the intermediate plate is not less than the angle. By providing a stopper that restricts the rotation of the filling valve, it is possible to give the operating lever a rotation that is larger than the rotation angle of the shift lever required to open and close the filling valve, and to stabilize the filling valve in the open and closed positions. It is possible to hold and perform reliable switching.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a filling valve opening / closing device according to an embodiment of the present invention, and FIG. 2 is a front view. (1) …… Filler bowl, (2) …… Filler bowl side wall, (6) …… Shaft, (18) …… Shift lever, (22) …… Intermediate plate, (26) …… Actuating lever, ( 30) …… Oval hole (guide way), (32) …… Projection, (36) …… Stopper (projection), (42) …… Spring.

Claims (1)

[Scope of utility model registration request] 1. A filling valve provided at a bottom portion of a filler bowl, a rotary shaft penetrating a side wall of the filler bowl, and a shift lever provided inside the filler bowl of the rotary shaft and engageable with the filling valve. And an operating lever that is provided on the outside of the filler bowl of the rotating shaft and that opens and closes the filling valve by rotating the shift lever through a predetermined angle via the rotating shaft. In a filling valve opening / closing device provided with a tension spring for holding a shift lever in an open position and a closed position of a filling valve, the operating lever is relatively rotatable with respect to a rotating shaft, and the operating lever and the filler are provided. An intermediate plate is interposed between the bowl and the bowl to fix it to the rotating shaft, and a protrusion is provided on either one of the actuating lever and the intermediate plate. Opening and closing of the filling valve, characterized in that the projection is fitted to form a guide path that can be relatively moved by a predetermined angle, and that a stopper that restricts rotation of the intermediate plate above an angle for opening and closing the filling valve is provided. apparatus.