JP2010132328A - Weighing and filling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure in which a sealing force applied to the mouth of a container and a load caused by a counter pressure are collectively considered as an internal force between a filling valve and a container holding means, and both the sealing force and the load are collectively regarded as an integrated force so as to have a weight applied to a load cell. <P>SOLUTION: A weighing and filling apparatus 10 is so constituted as to include a filling valve 1 having a fluid passage 1g in its interior, a fluid valve 1e that opens and closes the fluid passage 1g, and a fluid valve drive section 1d, connecting pipes 7 and 8 for filling fluid and fluid valve drive, provided between the filling valve 1 and a structural body of a rotary filling machine for filling fluid and fluid valve drive, and a load cell 4 installed in the structural body, wherein the filling valve 1 is fixed to a load applying portion 4b of the load cell 4 with a container sealing means 1f for tightly sealing a container 6 onto the filling valve 1 and a gas passage 1h for pressurizing and/or decompressing the container 6, a pipe 9 for impressed gas cum return gas is added to the connecting pipes 7 and 8 so that all of the connecting pipes have flexibility, and the amount of a fluid filled under pressure is measured by the load cell 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apparatus for filling a liquid such as a bottle, a PET bottle, or a can while measuring the filling weight, and more specifically, affected by the gas pressure and sealing force of a gas-containing liquid such as a carbonated beverage. The present invention relates to a liquid filling apparatus that can obtain a filling weight with high accuracy.

Soft drinks include non-gas beverages such as coffee, black tea, green tea and natural fruit juices, and gas-containing beverages such as cider and cola. When filling a container with gas-containing liquid, supply of gas-containing liquid The means and the liquid injection part of the container are in close contact with each other and shielded from the outside, and it is necessary to pressurize at a pressure higher than the saturation pressure of the dissolved gas. This is a condition necessary for the dissolved gas in the filling liquid to flow into the container without foaming in the container.
Therefore, in the gas-filled liquid filling device provided with the gas-filled liquid supply means (liquid supply piping and filling valve) and the container support or gripping means, the filling valve and the container port are brought into close contact with each other and shut off from the outside. Since a sealing force is applied to the container and a pressure (counter pressure) higher than the saturation pressure of the dissolved gas acts on the container, a vertical external force is applied to the container, so the filling amount (filling) is measured based on the weight. And it was difficult to control.

For this reason, in the prior art, a turbine-type flow meter, an ultrasonic vortex flow meter (see Patent Document 1) or an electromagnetic flow meter is installed in the liquid supply pipe portion of the gas-containing liquid, and the flow rate is integrated, The method of measuring and controlling the current was common.
Since the flow meter such as the turbine type, ultrasonic vortex type, or electromagnetic flow meter is calculated as the filling amount by integrating the flow rate of the liquid passing through the measurement unit of the liquid supply pipe, the measurement accuracy is It cannot be said that it is good.

On the other hand, a non-gas beverage filling device that does not need to tightly seal the filling liquid supply means (filling valve) and the container mouth is provided with a weighing means (load cell) below or in the vicinity of or near the holding means of the container. In addition, a weight-measuring type filling device with good filling accuracy is used.
Patent Document 2 introduces a configuration outline and problems of a weight-measuring filling device for non-gas beverages, and a solution.
That is, a load cell installed so as to detect a load in the vertical direction, a load application unit that protrudes horizontally from the load cell, and a load application unit that is attached to the load application unit and is opposite to the direction in which the load application unit protrudes from the load cell. Grip means for elastically gripping the neck of the container pushed in from the direction, and a filling nozzle for filling the liquid held in the container held by the grip means, and gripping the grip means while detecting the load by the load cell This is a weight filler that fills a predetermined amount of liquid in a container.

This patent document introduces a structure that avoids excessive horizontal force due to the horizontal force applied to the grip means. However, the filling valve unique to the gas-filled liquid filling apparatus and the container mouth are brought into close contact with each other. The problem of the vertical external force applied to the container such as the sealing force and the counter pressure is not mentioned at all, and the influence of the vertical force applied to the container such as the sealing force and the counter pressure is within the investigation range of the parties including the present inventor. No known technique of a gravimetric filling device that eliminates the above could be found.
Japanese Patent No. 3540428 (FIGS. 1, 3, and 4) JP 2001-39493 A (FIG. 2)

In the conventional technique (Patent Document 2), in the case of gravimetric filling of a non-gas beverage, the liquid is filled into the container at atmospheric pressure, via the load cell connected to the support or gripping means of the filling container. A method has been proposed in which the total weight including the filling liquid in the container is measured and filling is stopped when the weight reaches a predetermined value. That is, the value obtained by subtracting the empty container weight (tare) from the total weight is the weight of the filled non-gas liquid.
In the case of filling a gas-containing beverage, a load due to the sealing force of the container mouth and the counter pressure is added to the total weight, and the total weight including the weight is larger than the weight of the container including the filling liquid. In many cases, it also changes due to fluctuations in counter pressure, fluctuations in sealing force, etc., and it is difficult to construct a stable weight-measuring type filling apparatus. Therefore, it is necessary to invent a configuration in which the sealing force of the container mouth and the load due to the counter pressure are used as the internal force between the filling valve and the container holding means, and the both are integrated and only the weight thereof can be added to the load cell. is there.

In response to the above problems, the present invention aims to solve the problems by the following means.
(1) A weight-measuring type filling device as a first means includes a liquid passage inside, a filling valve having a liquid valve and a liquid valve driving unit for opening and closing the liquid passage, the filling valve and a rotary filling machine. In a weight-measuring-type filling device comprising a connecting pipe for filling liquid and liquid valve driving installed between the structures, and a load cell installed in the structure, a container seal for sealing the container to the filling valve Means and a gas passage for pressurizing and depressurizing the same container, the filling valve is fixed to the load application portion of the load cell, and a pipe for pressurized gas and return gas is added to the connection pipe to all the connection pipes. The liquid filling amount is measured with a load cell under pressure filling with flexibility.

  (2) The weight measurement type filling device of the second means is the weight measurement type filling device of the first means, wherein the container sealing means is attached to a container lifting / lowering means having a container gripping device and below the filling valve. It is comprised from the biasing means for pressing a container sealing member and the said container against a container sealing member, It is characterized by the above-mentioned.

  (3) The weight metering filling device of the third means is the weight metering filling device of the first means, a centering bell that can be moved up and down in the vertical direction while the container sealing means keeps sealing with the filling valve, The bell is composed of lifting means, a container seal member attached below the bell, and a container gripping device or a container holding device fixed to the load application portion of the load cell.

  The effect of the present invention is that the load in the vertical direction acting on the container when the container is sealed and when the counter pressure is applied is absorbed as the internal force of the filling valve independent of the structure, and the filling valve including the container sealing means and the pressure increasing / decreasing passage In addition, regarding the gas piping and liquid piping connected to the filling valve, it is possible to measure only the weight of the container and the filling liquid, etc. By keeping the external force acting from the filling liquid constant and considering it as a constant bias to the weight, the measured weight during filling with the load cell adds the measured weight before filling the liquid to the target filling weight. In addition, weight measurement is performed by measuring the liquid filling amount with a load cell under pressure filling by a method of stopping filling when the value obtained by subtracting the head amount is reached. It is effective to provide a filling device.

The effect of claim 2 is that the structure of the filling valve is relatively simple and has good cleaning properties because the container is sealed and opened as the container sealing means.
The effect of claim 3 is that the centering bell is opened and closed as the container sealing means to open and seal, so that a self-sealing structure is possible, and the urging means may be a small force. This container has the effect of providing a filling device with little liquid spillage by only horizontal movement.

(First embodiment)
A first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view showing a state in which a filling valve and a container mouth of a weight-measuring filling device are in close contact with each other and liquid filling is possible, and FIG. 2 is a view of the filling valve and the container mouth of FIG. It is side surface sectional drawing which shows the state open | released and enabling delivery of a container. FIG. 3 shows a rotary filling machine in which a plurality of filling apparatuses according to the present invention are arranged around a swivel (not shown) that rotates in a horizontal plane around a vertical axis (not shown). It is a schematic function explanatory drawing which filled up the filling process in the model plane layout drawing including the entrance / exit device.
In FIG. 3, a plurality of weight metering filling devices 10 (FIG. 3) are arranged around the swivel of the rotary filling machine F from the arrow S direction to the container gripping device (not shown) of the inlet star wheel I. 1 and 2), the container is introduced.

In FIG. 1, a load cell 4 fixed to a structure B integrated with a turntable (not shown) of the rotary filling machine F is composed of a load cell fixing portion 4a and a load cell load applying portion 4b at the other end extending horizontally. Bending stoppers 4c are provided above and below the load application unit 4b as protection means when an excessive load in the vertical direction is applied.
A filling valve 1 is fixed to an extension end of the load cell load application portion 4b. The weight-measuring filling device 10 includes a valve holding member 1b for fixing to the load cell load application unit 4b, a valve body 1a having a liquid passage 1g and a gas passage 1h therein, a liquid valve 1e for opening and closing the liquid passage 1g, and a liquid valve It comprises a drive part 1d, a filling valve 1 comprising a container seal member 1f attached to the lower part of the valve body 1a, a container lifting / lowering means 2 and a biasing means 3 such as a compression spring.

The container lifting / lowering means 2 is guided by a rod guide 1c integrated with the valve body 1a, and moves up and down in parallel to the valve body 1a, a gripping device mounting member 2c provided at the lower end of the rod 2a, and The container holding device 5 is configured. The gripping device attachment member 2c has a through hole 2d that can be moved up and down with respect to the valve body 1a. The gripping device attaching member 2c may have a split structure. The mouth of the container 6 such as a bag or can is in close contact with the lower end of the container sealing member 1f, or can be opened / confronted. The container gripping device 5 includes a known gripper (for example, Japanese Patent No. 3881662) including a pair of gripping arms that open and close. The upper end portion of the rod 2a of the container lifting / lowering means 2 is a horizontally extending flat plate portion 2e, and the upper surface thereof is adjusted to a position where it can face or contact the rod presser 12a. A receiving seat 2b at the upper end of the biasing means 3 is provided on the lower surface. The lower end portion of the urging means 3 is supported by a receiving seat provided at the upper end portion of the valve body 1a.
Therefore, as shown in FIG. 1, when the rod presser 12a faces the flat plate portion 2e and there is a gap between them, the extension force of the biasing means 3 pushes up the rod 2a, and the rod 2a By pulling up the gripping device attachment member 2 c at the lower end and the container gripping device 5, the mouth of the container 6 comes into close contact with the container seal member 1 f at the lower end of the filling valve 1.

Further, in FIG. 1, a filling liquid supply pipe P, a gas pipe, a stop valve D, and a liquid valve driving pipe A are fixed in the structure B.
Further, the filling valve 1 and the structure B are connected to a filling liquid supply pipe 8, a gas line pipe 9, and a liquid valve driving air pipe 7, which are connection pipes having flexible portions, respectively.
When examining the load applied to the load cell load application section 4b in the state of FIG. 1, the adhesion force between the mouth of the container 6 and the container seal member 1f at the lower end of the filling valve 1 is an internal force generated by the biasing means 3. It can be seen that it cannot be a load on the load cell. Therefore, the weights of the filling valve 1, the weight of the container 6 (including the filling liquid, if any), and a part of the weight of each of the pipes 7, 8, 9 (almost half are constant) Amount). The weight of the filling valve 1 and the weight of the filling liquid supply pipe 8 are always filled with liquid during operation of the rotary filling machine F, so it is necessary to add a predetermined ratio of the full liquid weight. is there.
In addition, as the load applied to the load cell load application unit 4b, the liquid pressure and gas pressure of the filling liquid, the counter pressure, and the like can be considered, but these are within the closed space formed by the filling valve 1 and the container 6 in close contact therewith. And cannot be a vertical load applied to the load cell load application unit 4b. It is the vertical force due to the bending rigidity of the pipes 7, 8, and 9 that the various pressures can become the vertical load applied to the load cell load application unit 4b. It does not change.

From the examination of the load in the vertical direction applied to the load cell load application unit 4b, in order to grasp the filling amount of the gas-containing liquid by measuring the weight of the load cell 4,
Measured weight during liquid filling = weight of filling valve 1 + weight of liquid in filling valve 1 + partial weight of each pipe 7, 8, 9 + partial weight of liquid in filling liquid supply pipe 8 + each pipe 7,8 , 9 vertical force due to bending stiffness
+ From the weight of the container 6 + the weight of the filling liquid in the container 6,
Measured weight before filling liquid = weight of filling valve 1 + weight of liquid in filling valve 1 + partial weight of each pipe 7, 8, 9 + partial weight of liquid in filling liquid supply pipe 8 + each pipe 7,8 , 9 vertical force due to bending stiffness
+ The weight of the container 6 can be subtracted.

In FIG. 3, a plurality of containers 6 supplied from the direction of arrow S to the container gripping device (not shown) of the inlet star wheel I are arranged around the swivel of the rotary filling machine F. The action of the cam C that is received by the container gripping device 5 (see FIG. 2) and that pushes the cam follower 12c downward as the swivel rotates in the clockwise direction and proceeds from the container introduction to the container sealing step [1]. Is released, and the rod presser 12a that moves up and down integrally with the cam follower 12c is raised to tightly seal and seal the container port to the container seal member 1f at the lower end of the valve. (See FIG. 1) The rod presser 12a can be raised and lowered by a guide 12b fixed to the structure B.
Next, the container 6 is conveyed to the counter pressurization step [2] along with the swivel of the swivel, and the inside of the container 6 is pressurized by the operation of the gas pipe and the shutoff valve D (see FIG. 1). Enter the weight measurement step [3] (before liquid filling). In this step [3], the weight signal emitted from the load cell 4 is stored in the control device (not shown) of the filling valve 1.

The swivel of the rotary filling machine F further turns clockwise, and when the filling process [4] starts, the control device (not shown) of the filling valve 1 sends a command to the electromagnetic valve in the structure B. 11 is operated, the air in the liquid valve drive unit 1d composed of the piston and the liquid valve drive air pipe 7 is removed, the liquid valve 1e is raised and opened to fill the liquid, and then the control of the filling valve 1 is performed. A state in which an immediate response can be made to a liquid valve closing command from a device (not shown) is maintained.
On the other hand, the control device (not shown) of the filling valve 1 receives and stores the weight signal emitted from the load cell 4 in the weight measurement step [3] of the empty container 6 (before liquid filling). The weight signal generated by the load cell 4 is continuously monitored, and when the value of the signal becomes equal to the following limit value, a command is sent to operate the electromagnetic valve 11 and through the liquid valve driving air pipe 7. The liquid valve driving air is sent to the liquid valve driving unit 1d, and the liquid valve 1e is closed.
Limit value = predetermined filling liquid weight-drop amount + measured weight before liquid filling

Next, the hold step [5] is stationary for suppressing the waving and foaming of the filling liquid, and the filled container 6 is conveyed while the filling is stopped.
In the sniffing step [6], the counter pressure is released, and the gas in the container 6 is discharged and returned to the atmospheric pressure by the operation of the gas pipe and the closing valve D (see FIG. 1).
In the next weight measurement step [7], the measured weight data of the load cell 4 is transmitted again to a quality control computer (not shown), which in the weight measurement step [3] of the empty container before the liquid filling. Subtract the measured weight and subtract.
The state of the filling device in steps [2] to [7] is as shown in FIG. 1. The final step of the swivel of the rotary filling machine F is to open the container immediately before the outlet star wheel O. It is a container discharge process [8]. At this time, as shown in FIG. 2, the rod presser 12a that moves up and down integrally with the cam follower 12c is pushed by the cam C against the extension force of the biasing means 3, and the upper end of the rod 2a. Since the gripping device attaching member 2c and the container gripping device 5 are pushed down through the horizontally extending flat plate portion 2e formed in the part, the container 6 is released from the close contact with the lower end of the filling valve and is lowered. Thereafter, the container 6 is transferred to a gripping device (not shown) of the outlet star wheel O and is conveyed to a sealing device provided in the T direction.
(Second Embodiment)

The configuration of the second embodiment differs from the configuration of the first embodiment in that the container gripping device 25 and the container 26 do not move up and down, and the centering bell 22c attached to the filling valve 21 moves up and down. That is, the mouth of the container 26 such as a bag or can is opened from the valve 21 or connected to the lower end. Functionally the same.
The second embodiment will be described below with reference to the drawings. FIG. 4 is a side cross-sectional view showing a state in which the container seal member 22f below the filling valve of the weight metering type filling device 20 and the container port are in close contact with each other, and filling of gas-containing liquid is possible, and FIG. It is side surface sectional drawing which shows the state by which the container sealing member 22f and container opening of the lower part of this filling valve are isolate | separated and open | released and the delivery of the container 26 is possible. FIG. 3 shows a rotary filling machine in which a plurality of filling devices of the present invention are arranged around a swivel (not shown) that rotates in a horizontal plane around a vertical axis (not shown) (not shown). FIG. 5 is a schematic functional explanatory diagram in which a filling process is written in a schematic plan layout diagram including the entrance / exit device, and can also be cited when explaining the relationship between the operation of the second embodiment and the filling process.

In FIG. 4, the load cell 24 fixed to the structure B integral with the swivel base (not shown) of the rotary filling machine F is composed of a load cell fixing part (not shown) and a load cell load application part 24b at the other end extending horizontally. In addition, a deflection stopper (not shown) is provided above and below the load application unit 24b as protection means when an excessive load in the vertical direction is applied.
A filling valve 21 is fixed to the extension end of the load cell load application section 24b. The weight measurement type filling device 20 includes a valve holding member 21b for fixing to the load cell load application unit 24b, a liquid main body 21a having a liquid passage 21g and a gas passage 21h therein, a liquid valve 21e for opening and closing the liquid passage 21g, and a liquid valve A filling valve 21 comprising a container sealing member 22f attached to a lower portion of a centering bell 22c that can be moved up and down while being sealed by a drive portion 21d, a valve main body 21a, and a bell seal member 22g, and a container gripping device 25 attached to a valve holding member 21b. And a bell lifting means 22 and a biasing means 23 such as a compression spring.

The bell elevating means 22 includes a rod 22a guided by a rod guide 21c and elevating in parallel with the valve body 21a and a bell mounting member 22j. The centering bell 22c is attached to the rod 22a by the bell mounting member 22j. ing.
An engaging member 22b that engages with a hook provided below a lifting member 32a integral with the cam follower 32c is provided at the upper end of the rod 22a, and projects horizontally from the intermediate portion of the rod 22a. The rod side urging means receiving seat 22h is provided, and the urging means 23 sandwiched between the valve end urging means receiving seat 21i provided on the valve end member 21f extending above the valve main body 21a. The centering bell 22c attached to the rod 22a and the lower end is biased downward by the extension force of. The elevating member 32a is movable up and down by a guide 32b fixed to the structure B.
On the other hand, the container 26 filled with the liquid is held by the container gripping device 25 attached to the lower surface of the valve holding member 21b so that the gripping center is horizontal and coincides with the center of the filling valve 21. The centering bell 22c biased downward is in close contact with the mouth of the container 26 and seals the container by the action of the container seal member 22f.

When examining the load applied to the load cell load application unit 24b in the state of FIG. 4, the adhesion force between the container mouth and the centering bell 22c is an internal force generated by the urging means 23 and can be a load of the load cell 24. It turns out that there is no. Accordingly, the load and the liquid filling amount (weight basis) are the same as those in the first embodiment.
The state of FIG. 5 is the one in the container introduction to container sealing step [1] and container opening to container discharge step [8] in FIG.
That is, the cam C acts to push up the cam follower 32c, and the hook provided below the cam follower 32c engages and lifts the engagement member 22b provided at the upper end of the rod 22a. 22c is separated from the container mouth, and the container 26 can be delivered to the container gripping device 25, or can be separated from the container gripping device 25 and taken over.
(Third embodiment)

The configuration of the third embodiment is different from the configuration of the second embodiment in that there is no container gripping device, and the container 56 such as a basket or can is formed from the inlet star wheel I (see FIG. 3). It is sent in and it is directly mounted on the lower part of the valve holding member 51b. Functionally the same.
The third embodiment will be described below with reference to the drawings. FIG. 6 is a side cross-sectional view showing a state in which the container seal member 52f below the filling valve of the weight metering type filling device 30 and the container port are in close contact with each other and the filling of the gas-containing liquid is possible, and FIG. 6 is a side cross-sectional view showing a state in which the container seal member 52f and the container port at the lower part of the filling valve are separated and opened, and the container 56 can be delivered. FIG. FIG. 3 is a schematic functional explanatory diagram in which a filling process is written in a schematic plan view including a gate device of a rotary filling machine in which a plurality of filling devices according to the present invention are arranged around a swivel base, and FIG. It can also be cited when explaining the relationship between the operation of the embodiment and the filling step.

In FIG. 6, the load cell 54 fixed to the structure B integral with the swivel base (not shown) of the rotary filling machine F is composed of a load cell fixing part (not shown) and a load cell load application part 54b at the other end extending horizontally. In addition, a deflection stopper (not shown) is provided above and below the load application unit 54b as protection means when an excessive load in the vertical direction is applied.
A filling valve 51 is fixed to the extended end of the load cell load application portion 54b. The weight-measuring filling device 30 includes a valve holding member 51b for fixing to the load cell load application unit 54b, a liquid passage 51g, a valve main body 51a having a gas passage 51h, a liquid valve 51e for opening and closing the liquid passage 51g, and a liquid Centering bell 52c that can be moved up and down while keeping hermetic seal by valve driving portion 51d, valve main body 51a and bell seal member 52g, container seal member 52f attached below the valve, and valve holding member 51b, for example, Japanese Patent No. 3521816 , The filling valve 51 including the acceleration arm 55 and the like, the centering bell raising / lowering means 52 and the urging means 53.

The centering bell lifting / lowering means 52 includes a rod 52a that is guided by a rod guide 51c and moves up and down in parallel with the valve body 51a and a centering bell mounting member 52j. The centering bell mounting member 52j causes the centering bell 52c to move to the rod 52a. Is attached. An engaging member 52b that engages with a hook provided at the lower end of the elevating member 62a integral with the cam follower 62c is provided at the upper end portion of the rod 52a, and projects horizontally from the intermediate portion of the rod 52a. The rod side urging means receiving seat 52h is provided, and the urging means 53 sandwiched between the valve end urging means receiving seat 51i provided on the valve end member 51f extending above the valve body 51a. The centering bell 52c attached to the rod 52a and the lower end is biased downward by the extension force of. The elevating member 62a is movable up and down by a guide 62b fixed to the structure B.
On the other hand, since the container 56 filled with the liquid is placed horizontally below the valve holding member 51b so that the center of the container coincides with the center of the valve 51, the centering is biased downward. The bell 52c is in close contact with the mouth of the container 56, and seals the can by the action of the container seal member 52f.

When examining the load applied to the load cell load application unit 54b in the state of FIG. 6, the adhesion force between the container mouth and the centering bell 52c is an internal force generated by the urging means 53 and can be a load of the load cell 54. It turns out that there is no. Accordingly, the load and the liquid filling amount (weight basis) are the same as those in the first embodiment.
The state of FIG. 7 is the one in the container introduction to container sealing step [1] and the container opening to container discharge step [8] in FIG.
That is, the cam C acts to push up the cam follower 62c, and the hook provided below the cam follower 62c engages and lifts the engagement member 52b provided at the upper end of the rod 52a. 52c is separated from the container port, and the container 56 can be delivered to a container transport device (not shown), or can be separated from the container transport device and taken over.

In the configuration of the first and second embodiments, a pneumatic cylinder for manual switching valve control may be used in place of the cam C as means for causing the cam followers 12c and 32c to function. The structure for fixing the load cells 4 and 24 is not limited to the structure B of the rotary filling machine, but may be replaced with a stand provided with the gas-filled liquid filling device set of the present invention.
Further, as a means for causing the cam followers 12c and 32c to function, it is possible to include the use of a manual pushing lever that can be directly pressed down or locked by the operator.

It is side surface sectional drawing which shows the state at the time of filling of the weight measurement type filling apparatus which concerns on the 1st Embodiment of this invention. It is side surface sectional drawing which shows the state at the time of the container introduction or container discharge | emission of the weight measuring type filling apparatus which concerns on the 1st Embodiment of this invention. It is a schematic function explanatory view showing the filling process of the rotary filling machine. It is side surface sectional drawing which shows the state at the time of filling of the weight metering type filling apparatus which concerns on the 2nd Embodiment of this invention. It is side surface sectional drawing which shows the state at the time of the container introduction or container discharge | emission of the weight measurement type filling apparatus which concerns on the 2nd Embodiment of this invention. It is side surface sectional drawing which shows the state at the time of filling of the weight metering type filling apparatus which concerns on the 3rd Embodiment of this invention. It is side surface sectional drawing which shows the state at the time of the container introduction or container discharge | emission of the weight measuring type filling apparatus which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

1, 21, 51 Filling valve 1a, 21a, 51a Valve body 1b, 21b, 51b Valve holding member 1d, 21d, 51d Liquid valve driving unit 1e, 21e, 51e Liquid valve 1f, 22f, 52f Container seal member 1g, 21g, 51g Liquid passage 1h, 21h, 51h Gas passage 2 Container lifting / lowering means 2a, 22a, 52a Rod 2c Gripping device attaching member 3, 23, 53 Biasing means 4, 24, 54 Load cell 4b, 24b, 54b Load cell load application section 5, 25 Container gripping device 6, 26, 56 Container 7, 27 Liquid valve drive air piping 8, 28 Filling liquid supply piping 9, 29 Gas line piping 10, 20, 30 Weight metering filling device 12c, 32c, 62c Cam follower 21b, 51b Valve holding member 22, 52 Centering bell lifting means 22g, 52g Bell seal Wood 22j, 52j bell mounting member 55 acceleration arm
A Liquid valve driving pipe B Structure C Cam D Gas pipe and shutoff valve F Rotary filling machine I Inlet star wheel O Outlet star wheel P Filling liquid supply pipe [1] Container introduction to container sealing process [2] Counter pressurization Process [3] Empty container weight measuring process [4] Filling process [5] Holding process [6] Sniffing process [7] Weight measuring process [8] Container opening to container discharging process

Claims (3)

  A filling valve having a liquid passage inside, a liquid valve for opening and closing the liquid passage and a liquid valve driving section, and for filling liquid and driving a liquid valve installed between the filling valve and the structure of the rotary filling machine In the weight metering type filling apparatus constituted by the connecting pipe and the load cell installed in the same structure, a container sealing means for sealing the container and a gas passage for pressurizing and depressurizing the container are added to the filling valve. The filling valve is fixed to the load application part of the load cell, and the piping for pressurized gas and return gas is added to the connecting pipe so that all the connecting pipes are flexible. A weight-measuring filling device, characterized in that the amount is measured by a load cell.   The container sealing means includes a container lifting / lowering means having a container gripping device, a container sealing member attached below the filling valve, and an urging means for pressing the container against the container sealing member. The weight measurement type filling device according to claim 1.   A centering bell that can move up and down in the vertical direction while the container sealing means keeps sealing with the filling valve, a lifting means for the bell, a container sealing member attached below the bell, and a load application portion of the load cell. The weight-measuring filling device according to claim 1, wherein the weight-measuring filling device is constituted by a fixed container holding device or a container holding device.

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