JP6021793B2 - Filling valve - Google Patents

Description

  The present invention relates to a filling valve that fills containers with liquids having different viscosities such as liquid beverages and seasonings.

  Conventionally, for filling valves that fill containers with liquids of different viscosities, the opening of the liquid valve is selected from the maximum and minimum two types, and each opening is in a certain range corresponding to the characteristics of the liquid The technique of adjusting independently is disclosed (patent document 1).

JP 2010-52780 A (FIG. 1)

  According to Patent Document 1, a small-diameter piston whose stroke is regulated by a large-diameter piston is provided in an air cylinder, and a valve rod connected to the small-diameter piston is adjusted by adjusting a stopper that regulates the operation individually. The two strokes are arbitrarily adjusted to select the maximum and minimum two stages of the liquid valve opening.

  However, in the technique of Patent Document 1, when two or more types of liquids having different liquid properties are used, particularly when it is necessary to change the opening degree in more than two stages, the opening degree is different for each liquid type. Adjustment is necessary, and in a filling apparatus having a large number of filling valves, adjustment must be made for all the filling valves each time, and there is a risk that much time will be spent on the adjustment.

  In view of the circumstances described above, the present invention can easily change the opening of the liquid valve in multiple stages, and can arbitrarily adjust the opening in each of the multiple opening degrees. It is an object of the present invention to provide a filling valve that can switch multi-stage opening patterns with one or several common pressure air supply switching means for all filling valves in a plurality of filling devices.

The present invention solves the above problems by the following means.
(1) The filling valve of the first means is a liquid valve composed of a movable valve body for opening and closing a filling liquid passage and a fixed valve seat, and is disposed in a cylinder body and connected to the movable valve body to connect the movable valve. A third piston for reciprocating the body, a movable shaft body movable in the axial direction for restricting the movement position of the third piston, and a first piston disposed in the cylinder body for restricting the movement position of the movable shaft body. Two pistons, a first piston disposed in the cylinder body and restricting a movement position of the second piston, and provided in the cylinder body, the first piston, the second piston, and the third piston. A pressure port to be actuated, and the stroke of the movable valve body is switched in multiple stages by selecting a movement position restriction of the first piston, the second piston, the third piston, and the movable shaft body. Te, wherein the opening degree of the liquid valve is configured to be switched in multiple stages.

  (2) The filling valve of the second means is attached to a portion of the filling valve of the first means protruding from the cylinder body of the first piston and abuts on the first position restricting portion of the cylinder body. Accordingly, the first stopper for restricting the movement position of the first piston and the second piston penetrating through the hollow hole of the first piston are attached to a portion of the first piston protruding from the first piston. A second stopper for restricting the movement position of the second piston by abutting the two-position restricting portion; and a portion protruding from the second piston of the movable shaft passing through the hollow hole of the second piston. And a third stopper for restricting the protruding position of the movable shaft body from the second piston, and a portion protruding from the cylinder body of the third piston. A fourth stopper for restricting the movement position of the third piston by contact with the fourth position regulating portion of the serial cylinder body, characterized by comprising a.

  (3) The filling valve of the third means includes a first adjustment mechanism for adjusting a relative position between the first piston and the first stopper, a filling valve of the second means, the second piston, A second adjustment mechanism that adjusts a relative position of the second stopper; a third adjustment mechanism that adjusts a relative position of the movable shaft body and the third stopper; and a relative relationship between the third piston and the fourth stopper. A fourth adjusting mechanism for adjusting the position, and by adjusting each of the multi-stage strokes of the movable valve body by each adjusting mechanism, the opening degree of the liquid valve can be adjusted in multiple stages. It is characterized in that it can be adjusted arbitrarily.

  (4) The filling valve of the fourth means is the filling valve of the first to third means. One or a small number of each of the pressure ports of all the filling valves of the filling apparatus provided with a plurality of filling valves. It is connected to the common pressure air supply switching means, and the multi-stage opening degree switching of the liquid valve can be centrally controlled by the common pressure air supply switching means for all the filling valves.

(5) The filling valve of the fifth means enables the common pressure supply switching means to centrally control the liquid valve opening degree of all the filling valves in a pattern such as large and small, sub-large and sub-small. It is characterized by that.

  The filling valve of the first means is a filling valve having a liquid valve comprising a movable valve body that opens and closes a filling liquid passage and a fixed valve seat, and is disposed in the cylinder body and connected to the movable valve body to A third piston for reciprocating movement, a movable shaft body movable in the axial direction for restricting the movement position of the third piston, a second piston disposed in the cylinder body for restricting the movement position of the movable shaft body, and the cylinder body The first piston, which is disposed within the first piston and restricts the movement position of the second piston, and the pressure port provided in the cylinder body for operating the first piston, the second piston, and the third piston. Since the movable valve body can be switched in multiple stages by selecting the movement position restriction of the third piston and the movable shaft body, the liquid valve can be opened. Can be set in multiple stages, that is, the movable valve body can be set in multiple stages such as large stroke, small stroke, sub-large stroke, sub-small stroke, and has the effect of being able to handle many types of filling liquids with different viscosities. .

  The filling valve of the second and third means is the first filling valve in the first means, and is attached to a portion protruding from the cylinder body of the first piston, and abuts against the first position restricting portion of the cylinder body. The first stopper for restricting the movement position of the first piston and the second stopper penetrating from the first piston of the second piston penetrating the hollow hole of the first piston are attached to the second piston by contacting the second position restricting portion of the first piston. A second stopper for restricting the moving position of the piston, and a second stopper for restricting the protruding position of the movable shaft body from the second piston, which is attached to a portion protruding from the second piston of the movable shaft body that passes through the hollow hole of the second piston. The third piston is attached to a portion of the third piston protruding from the cylinder body, and is brought into contact with the fourth position restricting portion of the cylinder body to move the third piston. A first adjustment mechanism that adjusts the relative position between the first piston and the first stopper, a second adjustment mechanism that adjusts the relative position between the second piston and the second stopper, and a movable A third adjusting mechanism that adjusts the relative position of the shaft body and the third stopper; and a fourth adjusting mechanism that adjusts the relative position of the third piston and the fourth stopper. By arbitrarily adjusting each of the multi-stage strokes, the opening of the liquid valve can be arbitrarily adjusted in each of the multi-stages, that is, the movable valve body can be adjusted to a large stroke, a small stroke, a sub-large stroke, The sub-stroke can be adjusted in multiple steps within a certain range, and the flow rate can be adjusted flexibly for many types of filling liquids having different viscosities.

  The filling valves of the fourth means and the fifth means are the filling valves in the first means to the third means. One or a few of the pressure ports of all the filling valves of the filling device provided with a plurality of filling valves are provided. Connected to a single common pressure supply switching means, the multi-stage switching of the liquid valve can be centrally controlled by the common pressure supply switching means for all the filling valves, and the common pressure supply switching means By using the common pressure air supply switching means that can centrally control the liquid valve opening degree of the large and small, the quasi-large and the quasi-small, the switching operability is greatly improved.

It is front sectional drawing of the filling valve concerning embodiment of this invention, and has shown the case where the opening degree of a liquid valve is large. The case where the opening degree of the liquid valve of the filling valve of FIG. 1 is small is shown. The case where the opening degree of the liquid valve of the filling valve in FIG. The case where the opening degree of the liquid valve of the filling valve in FIG. The case where the liquid valve of the filling valve of FIG. 1 is closed is shown. FIG. 6 is a partially enlarged view of FIGS. 1 to 5.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

(Embodiment of the present invention)
An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a front sectional view of a filling valve according to an embodiment of the present invention, and shows a case where the opening degree of a liquid valve is large.
FIG. 2 shows a case where the opening degree of the liquid valve of the filling valve in FIG. 1 is small.
FIG. 3 shows a case where the opening degree of the liquid valve of the filling valve in FIG.
FIG. 4 shows a case where the opening degree of the liquid valve of the filling valve in FIG.
FIG. 5 shows a case where the liquid valve of the filling valve in FIG. 1 is closed.
FIG. 6 is a partially enlarged view of FIGS. 1 to 5.
2 to 6, the symbols having the same structure as in FIG. 1 are partially omitted.

In FIG. 1, a filling valve 1 according to an embodiment of the present invention is mainly composed of a liquid valve 4 and an air cylinder 20.
As the liquid valve 4 moves upward in the direction of the arrow 6F of the movable valve body 6, a gap S1 is formed between the seal packing 6S of the movable valve body 6 and the fixed valve seat 5S of the valve body 5, and the liquid valve 4 Is opened, and the filling liquid supplied from the filling liquid supply hole 5H provided in the valve body 5 in the direction of arrow F passes through the liquid passage 5R formed between the movable valve body 6 and the inner diameter side of the valve body 5. Then, the filling liquid is filled in a container (not shown) below the liquid valve 4 in the direction of arrow L, and the movable valve body 6 is moved downward in the direction of arrow 6F, based on FIG. As will be described later, the liquid valve 4 is closed by the liquid-tight seal between the seal packing 6S and the fixed valve seat 5S, and the liquid filling is stopped.
The gap S1 shown in FIG. 1 is a gap S2 in FIG. 2, a gap S3 in FIG. 3, a gap S4 in FIG. 4, and a gap S5 in FIG. ) Is displayed.

The liquid valve 4 is formed with a throttle C1 between the inclined seat 5C of the valve body 5 and the tapered portion 6C of the movable valve body 6, and is supplied from the filling liquid supply hole 5H. When the filling liquid passes through the throttle C1 of the filling liquid passage (hereinafter also simply referred to as a liquid passage) 5R, the speed of the filling liquid is appropriately reduced.
The throttle C1 shown in FIG. 1 is the throttle C2 in FIG. 2, the throttle C3 in FIG. 3, the throttle C4 in FIG. 4, and the throttle C5 in FIG. 5, depending on the opening of the liquid valve. Is displayed.
Further, a guide cylinder 7 for guiding the reciprocating motion of the movable valve body 6 is provided at the upper part of the valve body 5, and between the guide cylinder 7 and the inner diameter side of the valve body 5 and the guide cylinder 7. The sliding portion of the movable valve body 6 has a liquid-tight structure so that the filling liquid does not leak to the outside.

As shown in the partially enlarged view of FIG. 5, the air cylinder 20 connects the first cylinder body 21, the second cylinder body 22, the first cylinder body 21 and the second cylinder body 22, and will be described later. A connecting cylinder 23 having two piston guide holes, an upper lid 21H of the first cylinder body 21, a lower lid 24 of the second cylinder body 22, the first piston 11 in the first cylinder body 21, and the second cylinder It is mainly configured by the second piston 12 and the third piston 13 in the main body 22 and the movable shaft body 10 to be described later, and is fixed to a frame (not shown).
The lower surface of the lower lid 24 and the upper surface of the valve body 5 are connected by a frame 9.

A pressure port P1 and a pressure port P2 for supplying air A for moving the first piston 11 up and down to the first cylinder body 21 are provided, and the second piston 12 is moved up and down on the second cylinder body 22. A pressure port P3 and a pressure port P4 for supplying air A to be moved, and a pressure port P5 for driving the third piston 13 upward are provided.
The pressurized air port P4 has both a function of driving the second piston 12 upward and a function of driving the third piston 13 downward.

A plurality of the filling valves 1 are provided in a circumferentially equal manner in a filling device (not shown), and the respective pressure ports P1 to P5 of all the filling valves 1 are respectively connected to one common pressure supply switching means 30 of the filling device. It is configured to be connected to.
In addition, although it is good also as a structure connected to the common pressure air supply switching means (not shown) for every few groups by grouping all the filling valves, it demonstrates as one common pressure air supply switching means 30 here.

Here, the lower part of the third piston 13 is connected to the upper part of the movable valve body 6 by a connecting fitting 8.
That is, the reciprocating motion of the movable valve body 6 is performed by the reciprocating motion of the third piston 13.

  The first piston 11 protrudes upward from the upper surface of the upper lid 21H, that is, the first position restricting portion ST1, and the first piston 11 and the first piston 11 are connected to the first piston 11 by a first stopper N11 that is screwed with an external screw at the protruding portion. 1 The upper and lower relative positions of the stopper N11 (the illustrated distance H1) can be adjusted, and after the position adjustment, the position is fixed by the non-rotating nut N12, and the position adjustment mechanism is adjusted first. It will be called a mechanism.

  The second piston 12 passes through an inner diameter hole, which is a hollow hole of the first piston 11, and protrudes upward from the upper end of the first piston 11, that is, the second position restricting portion ST2. The upper and lower relative positions (the distance H2 shown in the drawing) of the second piston 12 and the second stopper N21 can be adjusted by the second stopper N21 that is screwed together, and the position is fixed by the non-rotating nut N22 after the position adjustment. The position adjusting mechanism will be referred to as a second adjusting mechanism.

  The movable shaft 10 passes through the inner diameter hole of the second piston 12, protrudes upward from the upper end of the second piston 12, that is, the third position restricting portion ST3, and is screwed with an external screw at the protruding portion. The upper and lower relative positions (the distance H3 in the figure) of the movable stopper 10 and the third stopper N3 in the axial direction can be adjusted by the third stopper N3, and the second piston 12 of the third stopper N3 is adjusted. The position is fixed by tightening to the upper end surface, and the position adjusting mechanism is referred to as a third adjusting mechanism.

The third piston 13 protrudes downward from the lower surface of the lower lid 24, that is, the fourth position restricting portion ST4. The third piston 13 and the third piston 13 are connected to the third piston 13 by a fourth stopper N41 that is screwed with an external screw at the protruding portion. The upper and lower relative positions of the 4 stopper N41, that is, the distance between the position 13E of the third piston 13 and the lower surface of the fourth stopper N41 (the distance H4 shown in the figure) can be adjusted. The position adjusting mechanism will be referred to as a fourth adjusting mechanism.
Here, the head of the third piston 13 can be brought into contact with and separated from the lower surface of the movable shaft body 10, so that the upward movement of the third piston 13 is regulated by the movable shaft body 10. It has become.
As described above, the third piston 13 has four stages according to the position restriction of the movable shaft body 10 and the movement position restrictions of the second piston 12 and the first piston 11 via the movable shaft body 10. The stroke can be selected.
That is, the movable valve body 6 can select the same four-stage stroke as the third piston 13.

Next, the operation of the filling valve 1 according to the embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, when air is not supplied to the pressure port P1, the pressure port P3, and the pressure port P4 of the air cylinder 20, and the air A is supplied to the pressure port P2 and the pressure port P5, the first piston 11 and the third piston 13 rises.
As the first piston 11 rises, the positioning restriction by the movable shaft body 10 via the second piston 12 is released, and the third piston 13 that rises has the upper surface of the fourth stopper N41 at the fourth position restriction portion ST4. The movable valve body 6 is moved upward by a distance corresponding to the ascending amount of the third piston 13 and the clearance between the seal packing 6S and the fixed valve seat 5S is regulated. The liquid passage 5R is opened through the formation of S1, and the filling liquid in the liquid passage 5R is filled in the direction of the arrow L into a container (not shown).
In this state, the distance between the fourth position restricting portion ST4 and the lower surface of the fourth stopper N41 is illustrated as H41.
Here, the stroke of the movable valve body 6 in the state of FIG. 1 is referred to as a large stroke as will be described later, and the large stroke is the maximum region.

At the end of filling, as shown in FIG. 5, when the air is not supplied to the pressure port P3 and the pressure port P5 of the air cylinder 20 and the air A is supplied to the pressure port P4, the third piston 13 is moved to the lower lid 24. , The movable valve body 6 is lowered, the seal packing 6S comes into contact with the fixed valve seat 5S, and the downward movement is stopped, and the seal packing 6S and the fixed valve seat are stopped. The gap S5 between the 5S and the 5S is closed, and the filling of the filling liquid is completed.
In this case, air A may or may not be supplied to the pressure port P1 and the pressure port P2.
In this state, the distance between the fourth position restricting portion ST4 and the lower surface of the fourth stopper N41 is illustrated as H45.
Here, the large stroke is the amount obtained by subtracting the distance H41 from the distance H45, and the filling with the large stroke is referred to as a large flow rate filling.

Next, as shown in FIG. 2, when air is not supplied to the pressure port P1 and the pressure port P4 of the air cylinder 20, and air A is supplied to the pressure port P3 in addition to the pressure port P2 and the pressure port P5, When the second piston 12 is lowered and the lower surface of the second stopper N21 comes into contact with the second position restricting portion ST2 to restrict the lowered position, the movable shaft body 10 is lowered by the amount of the lowering of the second piston 12. Accordingly, the position of the third piston 13 is regulated by the movable shaft body 10 along with this, and a gap S2 between the seal packing 6S and the fixed valve seat 5S is formed, and the filling liquid in the liquid passage 5R is a gap. A container (not shown) is filled in the direction of arrow L at the opening of S2.
In this state, the distance between the fourth position restricting portion ST4 and the lower surface of the fourth stopper N41 is illustrated as H42 (H41 <H42).
Here, when the stroke of the movable valve body 6 in the state of FIG. 2 is referred to as a small stroke, the small stroke is the amount obtained by subtracting the distance H42 from the distance H45, and the small stroke is compared with the large stroke. Small and small stroke filling is referred to as small flow rate filling.

Next, as shown in FIG. 3, when the air is not supplied to the pressure port P2, the pressure port P3, and the pressure port P4 of the air cylinder 20, and the air A is supplied to the pressure port P1 and the pressure port P5, the first piston 11 is lowered until the lower surface of the first stopper N41 comes into contact with the first position restricting portion ST1, and the lower end of the first piston 11 is pushed down to the stepped portion T3 of the second piston 12, and the second piston 12 is pushed down. Along with this, the position of the third piston 13 is regulated via the movable shaft 10 to form a gap S3 between the seal packing 6S and the fixed valve seat 5S, and the filling liquid in the liquid passage 5R opens the gap S3. The container is filled in the direction of the arrow L at a degree.
In this state, the distance between the fourth position restricting portion ST4 and the lower surface of the fourth stopper N41 is illustrated as H43 (H41 <H43).
Here, when the stroke of the movable valve body 6 in the state of FIG. 3 is referred to as a secondary large stroke, the secondary large stroke is the amount obtained by subtracting the distance H43 from the distance H45. In contrast, filling with a quasi-large stroke is referred to as quasi-large flow rate filling.

Next, as shown in FIG. 4, when air is not supplied to the pressure port P2 and the pressure port P4 of the air cylinder 20, and air A is supplied to the pressure port P3 in addition to the pressure port P1 and the pressure port P5, The second piston 12 is lowered and positioned until it comes into contact with the step portion T4 of the second cylinder body 22.
Along with this, the position of the movable shaft body 10 is restricted, and when the third piston 13 is raised, a gap S4 is formed between the seal packing 6S and the fixed valve seat 5S, and the filling liquid in the liquid passage 5R is filled in the gap S4. A container (not shown) is filled in the direction of arrow L at the opening.
In this state, the distance between the fourth position restricting portion ST4 and the lower surface of the fourth stopper N41 is shown as H44. (H43 <H44)
Here, when the stroke of the movable valve body 6 in the state of FIG. 4 is referred to as a sub-small stroke, the sub-small stroke is the amount obtained by subtracting the distance H44 from the distance H45, and the sub-small stroke is the sub-large stroke. In contrast to this, filling with a small sub-stroke is referred to as sub-small flow filling.

  As described above, large strokes, small strokes, quasi-large strokes and quasi-small strokes are raised, and the liquid valve is closed when the air pressure to the pressure port P1, the pressure port P2, the pressure port P3, the pressure port P4, and the pressure port P5 is increased. Although a combination of supply and stop is performed, when a plurality of filling valves 1 are provided in a filling device (not shown), piping from the pressure ports P1 to P5 of all the plurality of filling valves 1 is respectively connected. When the air is supplied or stopped by switching operation of the common pressure air supply switching means 30 by connecting to one common pressure air supply switching means 30 of the filling device in one place, each filling valve 1 The workability of supplying or stopping the air to the pressure port P1 to the pressure port P5 is greatly improved.

Here, a pattern in which the air supply and stop of the pressure ports of the plurality of all filling valves 1 are collectively performed will be described.
The above-described large stroke (large flow rate filling), small stroke (small flow rate filling), and liquid valve closing as the first pattern, the above-described sub large stroke (quasi large flow rate filling), sub small stroke (quasi small flow rate filling) Assuming that the liquid valve is closed in the second pattern, in the first pattern, the pressure port P2 is constantly supplied with air, the supply of air to the pressure port P5 and the pressure port P4 is switched, and the presence or absence of air supply to the pressure port P3 The small flow rate filling can be switched, and the second pattern can be switched between the quasi high flow rate filling and the quasi small flow rate filling by changing the air supply from the pressure port P2 to the pressure port P1 with respect to the first pattern. The filling can be easily switched at the liquid valve opening corresponding to the filling liquid type by changing the pattern.

Next, position adjustment of the first stopper N11, the second stopper N21, the third stopper N3, and the fourth stopper N41 will be described.
First, the position adjustment mechanism (fourth adjustment mechanism) related to the fourth stopper N41 will be described. The rotation stop nut N42 is loosened to appropriately adjust the distance H4 between the fourth stopper N41 and the third piston 13, and the rotation stop nut. By fixing the position at N42, the vertical position of the third piston 13 can be adjusted, and the rising position of the movable valve body 6 changes accordingly, and the filling amount of the large flow rate filling is slightly increased or decreased within a certain range. Can be adjusted.
That is, the adjustment can be performed as a range in which the filling of the large flow rate filling has a width.

  Next, the position adjustment mechanism (second adjustment mechanism) related to the second stopper N21 will be described. The rotation stopper nut N22 is loosened and the distance H2 between the second stopper N21 and the second piston 12 is adjusted appropriately to prevent the rotation. By fixing the position with the nut N22, the vertical position of the second piston is changed, and accordingly, the vertical restricting position of the third piston is changed through the change of the vertical position of the movable shaft body 10, and the movable valve body 6 is changed. The ascending position is changed (the distance H42 shown in FIG. 2 is changed), and it is possible to adjust the filling amount of the small flow rate filling to be slightly larger or smaller within a certain range.

  Next, the position adjustment mechanism (first adjustment mechanism) related to the first stopper N11 will be described. The rotation stopper nut N12 is loosened to adjust the distance H1 between the first stopper N11 and the first piston 11 as appropriate. By fixing the position with the nut N12, the vertical position of the first piston is changed, and accordingly, the upper and lower restricting positions of the third piston are changed through the change of the vertical position of the second piston and further the movable shaft body 10. Then, the rising position of the movable valve body 6 is changed (the distance H43 shown in FIG. 3 is changed), so that the amount of filling of the sub-large flow rate filling can be adjusted to be slightly larger or smaller within a certain range.

  Further, the position adjusting mechanism (third adjusting mechanism) related to the third stopper N3 will be described. By adjusting the distance H3 between the third stopper N3 and the head of the movable shaft body 10 by loosening the third stopper N3. The vertical position of the movable shaft body 10 changes, and accordingly, the vertical restriction position of the third piston changes, and the rising position of the movable valve body 6 changes (the distance H44 shown in FIG. 4 changes). It is possible to adjust the filling amount of the small flow rate filling to be slightly larger or smaller within a certain range.

  As described above, the filling valve 1 according to the embodiment of the present invention can centrally control the air supply to each of the pressure ports P1 to P5 and the switching of the stop. It is possible to easily switch to filling, sub-low flow filling, and filling stop, and by adjusting with the first adjustment mechanism, the second adjustment mechanism, the third adjustment mechanism, and the fourth adjustment mechanism, large flow filling and small flow rate In each of filling, quasi-large flow rate filling, and quasi-low flow rate filling, it is possible to perform filling with a wide flow rate within a certain range, that is, filling suitable for the viscosity of the filling liquid type.

DESCRIPTION OF SYMBOLS 1 Filling valve 4 Liquid valve 5 Valve body 5R Filling liquid flow path 5S Fixed valve seat 6 Movable valve body 6S Seal packing 8 Connecting metal fitting 10 Movable shaft body 11 1st piston 12 2nd piston 13 3rd piston 20 Cylinder 21 1st cylinder Main body 22 Second cylinder main body Connecting cylinder N11 First stopper N21 Second stopper N3 Third stopper N41 Fourth stopper P1, P2, P3, P4, P5 Pressure port ST1 First position restricting portion ST2 Second position restricting portion ST3 3 position restriction part ST4 4th position restriction part

Claims (5)

A liquid valve comprising a movable valve body for opening and closing the filling liquid passage and a fixed valve seat;
A third piston disposed in the cylinder body and connected to the movable valve body to reciprocate the movable valve body;
A movable shaft body movable in the axial direction for restricting the movement position of the third piston;
A second piston disposed in the cylinder body and restricting the movement position of the movable shaft body;
A first piston disposed in the cylinder body for restricting a movement position of the second piston;
A pressure port provided in the cylinder body for operating the first piston, the second piston, and the third piston;
The stroke of the movable valve body is switched in multiple stages by selecting the movement position restriction of the first piston, the second piston, the third piston, and the movable shaft body, and the opening degree of the liquid valve is multistage. A filling valve characterized in that it can be switched to. The filling valve according to claim 1,
A first stopper that is attached to a portion of the first piston that protrudes from the cylinder body and that abuts against a first position restricting portion of the cylinder body to restrict the movement position of the first piston;
The moving position of the second piston is adjusted by being attached to a portion protruding from the first piston of the second piston penetrating through the hollow hole of the first piston and contacting the second position restricting portion of the first piston. A second stopper to regulate,
A third stopper that is attached to a portion of the movable shaft body that protrudes from the second piston and that passes through the hollow hole of the second piston and restricts the protruding position of the movable shaft body from the second piston;
A fourth stopper that is attached to a portion of the third piston protruding from the cylinder body and that abuts against a fourth position restricting portion of the cylinder body to restrict the movement position of the third piston. Characteristic filling valve. The filling valve according to claim 2,
A first adjustment mechanism for adjusting a relative position between the first piston and the first stopper;
A second adjustment mechanism for adjusting a relative position between the second piston and the second stopper;
A third adjustment mechanism for adjusting a relative position between the movable shaft body and the third stopper;
A fourth adjusting mechanism for adjusting a relative position between the third piston and the fourth stopper;
The opening of the liquid valve can be arbitrarily adjusted in each of multiple stages by arbitrarily adjusting each of the multi-stage strokes of the movable valve body by each of the adjusting mechanisms. Filling valve. The filling valve according to any one of claims 1 to 3,
The pressure ports of all the filling valves of a filling apparatus provided with a plurality of filling valves are connected to one or a few common pressure supply switching means, and the opening degree of the liquid valve is switched in multiple stages for all the filling valves. Can be centrally controlled by the common pressure air supply switching means. The filling valve according to claim 4,
The filling valve characterized in that the common pressure air supply switching means can centrally control the liquid valve opening degree of all the filling valves in a pattern such as large and small, sub-large and sub-small.

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