JPS6154670B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in liquid fill valves.

[Conventional technology]

To explain the conventional liquid filling valve with reference to Figs. 1 and 2, the valve opening/closing lever (outside) 1
A valve opening/closing lever (inner) 3, which is integrated with the filler bowl 4 via a shaft 2, is rotatably attached to a side wall (not shown) of the filler bowl 4. In addition, a in FIG. 1 is a closed position, and b is an open position. Reference numeral 5 designates a charging valve, which is composed of a valve body (upper) 5a, a valve body (lower) 5b, and a gasket 6 sandwiched between them. 8 is hung between the stem 7 and the valve body (lower) 5b, so that the charging valve 5 is supported by the spring 8 in a floating state above the stem 7. 5c is a vent hole, and the charging valve 5, packing 6, and stem 7 constitute an air valve. A collar 9 is fixed to the stem 7, and the collar 9 is urged upward within a spring case 11 by a spring 10. Also, a packing 12 is built in the lower part of the stem 7, and the packing 12 and the sniff block 1 are connected to each other.
3 constitutes a main liquid valve. A sniff valve consisting of a cap nut 14, a sniff stem 15, a packing 16, and a spring 17, and a sniff orifice 18 are built into the sniff block 13. Furthermore, a centering cup (outer) 19 and a centering cup (inner) (made of rubber) 20 are provided at the bottom of the sniff block 13, and these are attached to the mounting bracket 2.
1 is attached to the filler bowl 4 via a packing 22. Furthermore, a vent tube 23 is screwed into the lower part of the stem 7.
A spretzder 24 is attached to 3, and
A vent hole 25 is located below the spreader 24.
is drilled. 26 is a bottle and air cylinder 27
By being pushed up from below, the bottle opening is pressed against the centering cup (inner) 20, so that there is no leakage between the bottle opening and the centering cup (inner) 20. 11a is a liquid passage in the spring case 11. Figure 2 shows valve opening/closing lever (outside) 1 and valve opening/closing lever (inside) 3.
shows the filling state in which the main liquid valve and the air valve are both open when the is in position b, and the vent tube 23 and stem 7 have been raised by the dimension e compared to FIG. 1, and the charging valve 5 is It has increased by the dimension d, and there is a relationship of c<d between them.

Next, the filling action of the above-mentioned filling valve will be explained. First, when the bottle 26 is pushed up by the air cylinder 27, it will be in the state shown in FIG. 1, but the main liquid has not yet entered the bottle. In Figure 1, valve opening/closing lever (outside) 1,
When the valve opening/closing lever (inner) 3 is moved from the a position to the b position, the charging valve 5 rises, and only the position of the valve 5 becomes the state shown in FIG. 2. Next, the counter pressure in the filler bowl 4 (usually 2 to 4
Kg/cmG) flows in the opposite direction of the arrows 28, 29, and 30, and the pressure inside the bottle 26 becomes the same as that inside the filler bowl 4. As a result, the spring 10 pushes up the stem 7 and the vent tube 23, resulting in the state shown in FIG.
Here, the main liquid is arrow 31, 32, 33, 34, 3
5, 36, and the gas inside the bottle 26 flows as shown by arrow 3.
0, 29, 28 and return to the filler bowl 4, whereupon filling progresses. Next, the liquid level in the bottle 37
When the arrow 30 rises and closes the vent hole 25,
The flow of gas stops. At this moment, the flow of the main liquid also stops at the upper end of the sniff block 13 at the arrow 33, but the main liquid that had been flowing at the arrows 34 and 35 reaches the bottle 26.
The liquid level inside the bottle 26 is at the position 38 in FIG. At the same time, the main liquid also enters the inside of the stem 7 and becomes the main liquid up to the position 39. Now, when the valve opening/closing levers (outer) 1 and (inner) 3 are returned to position a in Fig. 1, the state will be exactly as shown in Fig. 1, and the main liquid valve,
The air valve will be closed. In this case, there is counter pressure at the 40th position above the stem 7 and at the 41st position above the bottle, pushing the snift stem 15 toward the arrow 42.
Push in the direction of 41, 4 to open the snift valve.
The counter pressure at the 0 position is the sniff orifice 18.
It is squeezed out and released into the atmosphere. That is, due to sniffing, the pressure at positions 40 and 41 gradually returns to atmospheric pressure. The filling operation is then completed by lowering the air cylinder 27 and releasing the bottle 26 from the filling valve.

[Problem that the invention seeks to solve]

Conventional filling valves repeat the above-mentioned filling operation, but if the bottle supplied to the filling valve has poor centering or poor shape during the filling operation, the main liquid is diffused and the inner wall surface of the bottle is The spreader 24 attached to the vent tube 23 in order to cause the liquid to flow down along the bottle is eccentric from the center of the main liquid flow path within the bottle, causing unstable flow such as one-sided flow and lowering the liquid level inside the bottle. Because of this instability, the liquid level varies when the vent hole 25 is closed, and at the start of filling, bubbles are generated in the main liquid passage immediately after the main liquid valve. After blocking 25, the upper part of the spreader falls into the bottle, that is, the spreader 24, packing 12, and sniff block 13.
If air bubbles remain in the main liquid (commonly called gab) in the area surrounded by This will cause variations in the level. In addition, such variations in the liquid level are caused by
Particularly in the case of mass production, there are problems such as having a serious effect on rational main liquid production planning and being undesirable in terms of product quality control, and improvements have been desired. Furthermore, the drop of the main liquid (gub) is performed by replacing the air inside the bottle with the main liquid (gub), but since the space between the inner wall of the bottle 26 and the spreader 24 is narrowed, the time required for the drop to fall is reduced. However, this is relatively large compared to the filling time, which has been a problem in improving the filling speed.

On the other hand, Japanese Patent Publication No. 49-40677 ``Liquid filling device for containers'' does not require a diffuser or deflector in the vent pipe, and does not cause substantial interference between the liquid control valve and the liquid flowing into the container. As a means to achieve this purpose, a set of spiral blades forming a curved liquid flow path is provided above the main liquid valve, thereby imparting centrifugal motion to the main liquid. A structure is shown in which the main liquid is caused to flow downward toward the inner wall surface of the container by centrifugal force in an outward direction and in a substantially spiral flow path along the circumferential surface of the inner wall.

This filling device generates a spiral liquid flow, tends to form a homogeneous liquid film, and has the advantage of being able to fill the liquid at a high flow rate without generating too many bubbles. Since the penetration depth of the liquid film falling from above is too large, a large amount of air is brought into the liquid, resulting in the problem of easy bubbling.

[Means for solving problems]

The present invention was proposed in order to solve the above-mentioned problems, and in a liquid filling valve that fills a container loaded with liquid in a filler bowl, when opened, a counter pressure is applied to the container. A gas valve that can be opened and closed for inflow, a stem section that communicates with the gas valve and forms a passage for counter air in the container and for return air, and a stem section that is attached to the lower part of the stem and has a passage that communicates with the passage of the stem and has a lower end section. A vent tube having a vent hole, a main liquid valve that can be opened and closed to cause the liquid in the filler bowl to flow into the container when opened, a main liquid chamber provided on the upstream side of the main liquid valve, and the main liquid chamber. The lower part of the filler bowl has a flow path for controlling the flow rate of the main liquid at a constant level, a main liquid path for passing the main liquid through the same flow path, and a main liquid path for letting air bubbles generated in the main liquid chamber escape to the filler bowl. A circular protrusion is provided on the downstream side of the main liquid valve to form an annular flow path with the snift block, and the liquid film is filled along the inner wall of the container. Its purpose is to minimize the introduction of air into the filled liquid, without being affected by the shape of the container, without causing variations in the liquid level inside the container after filling. It is an object of the present invention to provide a liquid filling valve that can form and fill a homogeneous liquid film and that can improve the filling speed.

[Effect]

Since the present invention is configured as described above,
The main liquid in the filler bowl flows into the main liquid chamber with a constant flow rate controlled by the flow path, and the chamber is filled with the main liquid, and when the main liquid valve is opened during filling,
Due to the circular protrusion provided on the downstream side of the main liquid valve, the liquid forms a film along the main liquid passage and the inner wall of the container and flows down, filling the container.
There is no need for a spreader to diffuse the main liquid and make it fall along the inner wall of the container. Therefore, even if there is a centering problem in the container or if the shape of the container is different, the main liquid flowing down will not cause one-sided flow, so it will not be affected by the shape of the container and there will be no variation in the liquid level. It is possible to perform stable filling without any problems. In addition, since there is no spreader, the main liquid passage on the upstream side of the spreader is not filled with the main liquid, and the amount of so-called gobble liquid is reduced, which makes it possible to stabilize the liquid level in the container after filling, and to Since the falling speed of the liquid becomes faster, the filling speed can be improved.

Furthermore, since the air bubbles generated in the main liquid chamber are allowed to escape from the sub-flow path into the filler bowl, the main liquid chamber is always filled with only the main liquid, and therefore the air bubbles cause a difference in the amount of gulp liquid. There is no possibility of variations in the liquid level within the container.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 3 and 4.

Reference numeral 100 denotes a filler bowl into which the main liquid is supplied so that the liquid level height L is constant.
1a is provided, and an upper space 102 and a chamber 10 are provided.
1a is connected to a pipe having a three-way valve 103, and the other pipe connected to the three-way valve 103 is connected to a cleaning liquid tank (not shown).
104 is a case that is integrally attached to the filler bowl 100, and the upper space is a passage 105 that connects the chamber 10.
1a, and the lower space is connected to the holes 106 and 10.
7 communicates with the liquid chamber of the filler bowl 100. 108 is a valve opening/closing lever (outer) fixed to a shaft 110 rotatably held at the top of the case 104; 109 is a valve opening/closing lever (inner) fixed to the other end of the shaft 110; ) 108 is adapted to be rotated by known means. 111 is the valve body (top), which is connected to the stem 114 via the packing 113.
Valve body (lower) 112 slidably inserted into
The valve body (lower) 112 is provided with a small hole 112a, and the stem 114 is integrated with the valve body (lower).
A spring 115 is installed between the gas valve 20 and
It constitutes 0. 114a is a collar fixed to the stem 114, and this collar 114a and case 1
A spring 116 that biases the stem 114 upward is interposed between the filler bowl 100 and the filler bowl 100, and the spring force is such that the pressure inside the filler bowl 100 and the pressure inside the container supplied to the filling valve are the same pressure. When the stem 1
14 upward. The stem 114 is movable up and down with respect to the case 104, and a vent tube 114c having a vent hole 114b is integrally formed at the lower part thereof, and the inside thereof is a gas passage 114d. Also stem 1
14 is provided with a valve body portion 114e, and a gasket 117 is attached to this valve body portion 114e.
The main liquid valve 201 is constituted by the valve body portion 114e, the packing 117, and the sniff block 118. Further, the valve body portion 11 of the stem 114
4e is provided with a circular protrusion 114f that protrudes toward the downstream side of the gasket 117.

Snift block 118 has centering cup (outer) 120 and centering cup (outer) 12
It is fixed to the case 104 by a mounting bracket 119 through a packing 122 together with a centering cup (inner) 121 made of an elastic material that is integrally attached to the case 104, and holes 106 and 107 are formed in the lower part of the case 104.
The main liquid chamber 10 communicates with the inside of the filler bowl 100.
4a is formed. Also, Snift Block 11
8 is provided with a main liquid passage 118a through which the main liquid flows down, and a snift valve 202 which is slidably mounted with a cap nut 125 and constituted by a snift stem 123 having a packing 123a and a spring 124. Main liquid passage 118
a is communicated with through a hole 118b and an orifice 118c. Reference numeral 126 denotes a valve mounted on the case 104 so as to be able to move up and down, and is operated by a means not shown during cleaning, and allows the holes 104b and 104c provided in the case 104 to communicate with each other.
203 indicates a bottle.

Next, the filling action by the liquid filling valve will be explained.

Upper space 102 and chamber 1 of filler bowl 100
01a is in communication with the three-way valve 103, and the main liquid is supplied into the filler bowl 100 so that the liquid level L is constant. The bottle 203 is raised by a bottle stand (not shown) and sealed to the centering cup (inner) 121.

When the bottle 203 is sealed as described above, the valve opening/closing lever (outer) 108 is rotated by a known means (not shown), and at the same time, the valve opening/closing lever (inner) 109 is also rotated, and the valve body (upper) is rotated. )11
1, the valve body (lower) 112 rises due to the action of the spring 115, and the small hole 11
2a opens. In this way, the gas valve 20
0 opens, the counterpressure gas in the filler bowl 100 flows through the small hole 112a and the stem 1.
114d of gas passages in 14, vent tube 11
4c and the bottle 203 through the vent hole 114b.
The pressure inside the bottle 203 is the same as that inside the filler bowl 100. When the inside of the bottle 203 is pressurized to the same pressure as the inside of the filler bowl 100, the spring 116
The stem 114 is lifted upward, the main liquid valve 201 is opened, and filling of the main liquid is started. The main liquid flows from the filler bowl 100 to the hole 106,
107, and the flow rate is controlled to be constant to the main liquid chamber 1.
04a, the chamber 104a is filled with the main liquid, and when the main liquid valve 201 is opened during filling, the main liquid is regulated by the circular protrusion 114f protruding from the valve body 114e of the stem 114. While the main liquid passage 118a of the sniff block 118
A liquid film is formed along the inner wall of the bottle 203 and falls, filling the bottle 203. Therefore, at this time,
The vent hole 114b is blocked by the main liquid flowing down, and there is no possibility of insufficient filling.

On the other hand, the gas for counterpressure in the bottle 203 is supplied to the vent hole 114b, the vent tube 114c, the gas passage 114d of the stem 114,
It returns to the upper space 102 of the filler bowl 100 via the small hole 112a, the passage 105, the chamber 101a, and the three-way valve 103. Filling progresses in this way, and the filling liquid in the bottle 203 fills the vent hole 114b.
When the main liquid valve 201 is blocked, the gas pressure on the downstream side of the main liquid valve 201, that is, in the main liquid passage 118a and the upper space of the bottle 203 increases, and the gas pressure from the lower part of the main liquid valve 201 to the liquid level in the filler bowl 100 increases. In balance with the head, the flow of the main liquid stops at the bottom of the main liquid valve 201, and the main liquid that has already exceeded the bottom of the main liquid valve 201 flows down into the bottle 203. Then, the valve opening/closing lever (outside) 108 rotates,
The gas valve 200 and main liquid valve 201 are closed, and the snift stem 12 of the snift valve 202 is closed.
3 is connected to the spring 12 by known means (not shown).
The main liquid passage 118a and the gas in the space above the liquid level of the bottle 203 are gradually released to the atmosphere through the orifice 118c and the hole 118b. The bottle 203 is then lowered and the filling cycle ends. In addition, room 104
The hole 106 that communicates between the filler bowl 100 and the filler bowl 100 serves to release gas generated from the main liquid in the chamber 104a into the filler bowl 100.
A is always filled with the main liquid.

〔Effect of the invention〕

As described above, according to the above-mentioned filling valve, the main liquid flows down and is filled along the main liquid passage and the inner wall of the bottle, so there is no need to provide a spreader in the vent tube as in the conventional case. Therefore, the main flow does not cause one-sided flow, and reliable filling can be performed regardless of the shape of the bottle or the state of centering.The main liquid passage is not filled with the main liquid, and the so-called gulp liquid volume is reduced. Since this decreases, variations in the liquid level within the bottle after filling can be eliminated.

In addition, since the falling speed of the gob liquid can be increased, the filling speed can be improved, and other great effects can be achieved.

In addition, in the above embodiment, the filler bowl 1
The main liquid flowing into the chamber 104a from inside the filler bowl 100 may be given a swirling motion, and in this case, a buffle or the like may be provided in the passage that communicates the filler bowl 100 and the chamber 104a.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views showing a conventional liquid filling valve, FIG. 3 is a cross-sectional view showing an embodiment of the present invention, and FIG. 4 is a view taken in the direction of arrow A in FIG. 3. 100: filler bowl, 104: case, 1
04a: Main liquid chamber, 106, 107: Hole, 114:
Stem, 114e: Valve body, 114f: Circular protrusion, 117: Packing, 118: Snift block, 118a: Main liquid passage, 201: Main liquid valve,
203: Bottle.

Claims (1)

[Claims] 1. A liquid filling valve that fills a container loaded with liquid in a filler bowl, includes an openable and closable gas valve that allows counter pressure to flow into the container when opened, and a gas valve that communicates with the gas valve to supply counter and return air in the container. a vent tube that is attached to the lower part of the stem and has a passage that communicates with the passage of the stem and a vent hole at the lower end; when opened, the liquid in the filler bowl is drained into the container. A main liquid valve that can be opened and closed to allow inflow, a main liquid chamber provided on the upstream side of the main liquid valve, and a flow path that connects the main liquid chamber and the lower opening of the filler bowl to control the main liquid flow rate at a constant level. The flow path is composed of a main liquid path through which the main liquid passes, and a sub flow path formed at the upper part of the main liquid path to allow air bubbles generated in the main liquid chamber to escape to the filler bowl. A liquid filling valve characterized in that a circular protrusion forming an annular flow path with a sniff block is provided on the downstream side of the valve, and a liquid film is filled along the inner wall of the container.