JPH0333677Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a liquid filling nozzle that is installed in a filling machine that fills a container with a liquid such as juice.

Prior Art and its Problems Conventionally, a wire mesh liquid filling nozzle has been known as this type of nozzle. This conventional nozzle has a wire mesh attached to the tip opening of the nozzle.
After liquid filling is completed, the liquid remaining in the nozzle is prevented from dripping due to the surface tension of the wire mesh portion. Conventional wire mesh liquid filling nozzles like this are used to keep the filling amount constant and accurate when filling relatively low viscosity liquids with good fluidity and good drainage when filling is completed, such as milk. , and can be filled at high speed. However, when filling relatively high viscosity liquids that contain substances such as fruit pulp and fibers, the wire mesh acts as resistance and the liquid flows slowly.
It was difficult to drain the liquid and it was not possible to perform high-speed filling. Therefore, in the past, the filling machine was operated at a reduced filling speed, which caused the problem that the efficiency of the entire filling machine was extremely poor.

In order to solve such problems, the applicant
First, a cylindrical nozzle body, a damper attached to the lower end of the nozzle body so as to be movable in the vertical direction, a spring suspension member arranged and fixed at the upper part of the nozzle body, and a coil suspended from the spring suspension member. For a filling machine, comprising a spring, a connecting member connecting the lower end of the coil spring and the free end of the damper, and a resistor against flowing liquid fixed to the connecting member and positioned below the coil spring. A filling nozzle was proposed (see Japanese Patent Application Laid-Open No. 1689-1989).

However, in the liquid filling nozzle proposed above, a damper opening/closing mechanism consisting of a spring hanging member, a coil spring, a connecting member, and a resistor is installed inside the nozzle body, so all of these components serve as resistance to the flowing liquid. As a result, the flow of the highly viscous liquid became slow, making it impossible to perform satisfactory high-speed filling.

The purpose of this invention is to be able to fill a specified container at high speed even when the liquid contains substances such as fruit pulp and fibers and has a relatively high viscosity. To provide a liquid filling nozzle which is kept watertight when closed and is equipped with a gate opening/closing mechanism which allows the nozzle body to be put in and taken out from a container during filling without any trouble.

Means for Solving the Problems In order to achieve the above-mentioned purpose, the liquid filling nozzle according to this invention has a recess in the shape of The upper extension of the rubber plate gate, which obliquely closes the opening and has a reinforcing plate attached to the outer surface, is attached to the inner surface of the upward slope of the recess, and the outer surface of the bottom of the recess is A long first lever is provided with a horizontal rotation shaft, and extends diagonally downward inward and outward from the inside and outside of the nozzle body through a vertical slit made in the downward slope of the recess on the rotation shaft. The upper ends of short second levers extending outward diagonally downward are fixed on the outside, the lower ends of the first levers are connected to the reinforcing plate of the gate, and the lower ends of the second levers are connected to one side wall of the nozzle body. The lower end of a lifting rod that extends from above to below in close proximity to the gate and is raised and lowered by an opening/closing actuator is connected with a pin, and the gate is configured to be in a nearly vertical position at the lifting limit of the lifting rod. It is.

Operation During filling, the main body of the filling nozzle according to this invention is inserted into a container, and the opening/closing actuator is operated to open to raise the lifting rod. Then, the second lever connected by a pin to the lower end of the second lever is pulled upward, the rotation shaft rotates, and the first lever swings outward. As a result, the lower end of the first lever pulls the reinforcing plate outward, opening the gate to which the reinforcing plate is affixed. Since the gate is made of rubber plate, it can swing without hinges. When filling is completed, the opening/closing actuator is operated to close and the lifting rod is lowered. Then, the first
The lever and the second lever swing in the opposite direction to close the gate.

A depression in the form of There is nothing inside the nozzle body that acts as a resistance to the flowing liquid. When the gate is closed, it is slanted, and when opening the gate, it is only necessary to make it almost vertical, so it can be opened and closed with a small amplitude.

Since the gate is made of a rubber plate, the opening is tightly closed. Although it is made of a rubber plate, a reinforcing plate is attached to the outer surface of the gate, so it maintains its gate shape. A horizontal rotation shaft is disposed on the outer surface of the bottom of the recess, and a long first shaft extends inward and diagonally downward from the inside and outside of the nozzle body through a vertically long slit bored in the downward slope of the recess. The upper ends of the short second levers extending diagonally downward outward from the outside of the lever and the nozzle body are fixed, and the lower ends of the first levers are connected to the reinforcing plate of the gate, and the lower ends of the second levers are connected to the reinforcing plate of the gate. The gate opening/closing mechanism cannot be seen from the outside of the nozzle body because the lower end of the lifting rod that extends from above to below along one side wall of the nozzle body and is raised and lowered by the opening/closing actuator is connected with a pin. ,
Moreover, there is no problem in putting the nozzle body in and out of the container during filling.

When the gate is opened to a substantially vertical position, the reinforcing plate that is integral with the gate also swings outward. In this case, the reinforcing plate can escape into the space formed by the lower slope of the recess.

Since the first lever and the second lever are relatively short, the presence of the second lever, together with the recess, does not interfere with the insertion and removal of the nozzle body into the container during filling, and the former That is, since the first lever is relatively long, the gate is closed obliquely, and the gate can be opened and closed by a slight vertical movement of the elevator rod.

Since the gate is in a nearly vertical position at the lifting limit of the lifting rod, the opening is completely opened and the liquid mixed with substances such as pulp and fibers from the nozzle body can be smoothly poured into the container. It flows down and fills this.

Embodiment An embodiment of this invention will be described below based on the drawings.

In the drawing, a filling machine 1 includes a liquid storage tank 2 that contains a liquid mixed with substances such as fruit pulp and fibers, and a liquid filling cylinder 3 that is connected to the bottom wall of this tank in a hanging manner. , a liquid metering supply cylinder 4 connected to the center of the height via a connecting pipe 6, and a liquid filling nozzle 5 according to this invention detachably attached to the lower end of the liquid filling cylinder 3.
It is equipped with Below the liquid filling nozzle 5,
A vertically elongated cardboard container 8 held by a container holding member 7 that can be raised and lowered is positioned in an empty state.

An outward convex portion 13 is provided at the upper end of the rectangular cylindrical nozzle body 10.
On the other hand, an inward protrusion 15 is provided at the lower end of an annular tightening fitting 14 screwed onto the lower end of the liquid filling cylinder 3, and by tightening this fitting 14, the inner protrusion 15 and the outer convex portion 13 are engaged, and the nozzle body 10 is connected to the liquid filling cylinder 3.
It is removably attached to the lower end of the.

At the lower end of one side wall 10a of the square tubular nozzle body 10, a depression 18 in the shape of The upper extension part 11a of the rubber plate gate 11, which is affixed thereto, is attached, and the horizontal rotation shaft 22 is received by the bearing 21 fixed to the outer surface of the bottom 18c of the recess 18. A long first lever 23 extends diagonally downward inward from the inside and outside of the nozzle body 10 through a vertically long slit 25 bored in the lower inclined portion 18b of the nozzle body 10, and a short lever 23 extends diagonally downward outward from the outside of the nozzle body 10. Second lever 2
4, the lower ends of the first levers 23 are connected to the reinforcing plate 19 of the gate 11, and the lower ends of the second levers 24 are connected to one side wall 10a of the nozzle body 10 in close proximity to each other. The lower end of the lifting rod 20 extending downward from above is connected with a pin. An air cylinder 29, which is an opening/closing actuating device, is connected with a downward pin to a bracket 27 provided at the upper end of the nozzle body 10. Air cylinder 29 piston rod 29
A substantially L-shaped connecting member 28 is fixed to the tip of a, and the upper end of the lifting rod 20 is connected with a pin to the lower end of the connecting member 28. When the gate 11 is closed, the inner surface of its lower end portion is in close contact with the lower edge of the other side wall 10b of the nozzle body 10. At the upper limit of the lift bar 20,
The gate 11 is opened in a substantially vertical state.

A check valve 30 is provided at the upper end of the liquid filling cylinder 3 near the tank 2 . Check valve 3
0 is equipped with a disk-shaped valve body 31 having a valve stem 32 in an upright shape. A spring receiver 3 is attached to the upper end of the valve stem 32.
3 is installed. A valve seat 34 is provided on the inner wall of the cylinder body 3.
However, near the upper side of this, a valve stem elevation guide member 35 is provided. The valve stem 32 is inserted into the hole in the center of the guide member 35, and the upper end of the coil spring 36 fitted over the valve stem 32 is received by the spring receiver 33, and the lower end of the coil spring 36 is received by the valve stem elevation guide member 35. By being received, the valve body 31 is always urged upward by the elastic force of the coil spring 36,
It is brought into contact with the valve seat 34 from below.

The liquid constant supply cylinder 4 has a cylinder body 37.
, a piston 38 slidably fitted in a cylinder body 37, and a piston rod 39. The piston rod 39 passes through the bottom wall of the cylinder body 37 and projects downward, and is raised and lowered with a constant stroke by means not shown.
When the piston 38 descends together with the piston rod 39, liquid flows from the tank 2 through the liquid filling cylinder 3 and into the metered supply cylinder 4 side.
As the piston 38 rises, it is discharged from the cylinder 4.

In the above, to fill the container 8 with liquid,
First, the container holding member 7 is pushed upward to raise the container 8, and the container 8 is fitted onto the main body 10 of the liquid filling nozzle 5 from below, as shown by the dashed line in FIG. In other words, the nozzle body 10 is inserted into the container 8. When the piston 38 of the liquid quantitative supply cylinder 4 is lowered, the inside of the supply cylinder 4 becomes negative pressure, so the check valve 30 opens against the elastic force of the coil spring 36, and the liquid is filled from the liquid storage tank 2. Liquid is introduced into the cylinder 4 through the cylinder 3 and the connecting pipe 6. At this time, the gate 11 remains closed, so no liquid flows out from the nozzle body 10. Next, the piston 38 of the supply cylinder 4 is raised, and the air cylinder 2
Activate 9 to open gate 11. Then, liquid is injected into the container 8 through the opening 16 at the lower end of the nozzle body 10. As the amount of liquid in the container 8 increases, the container holding member 7 is gradually retracted downward and the container 8 is lowered.

In the above embodiment, the air cylinder 29 is used as the opening/closing device for the gate 11, but the air cylinder 29 is not limited to this. An actuating device or the like may also be used.

Effects of the invention According to the liquid-filling nozzle of this invention, there is nothing inside the nozzle body that acts as a resistance to the flowing liquid. Even if it has a particularly high viscosity, it can be smoothly filled into a container at high speed.

In addition, since the gate is made of a rubber plate, the gate can be closed diagonally inside the nozzle body by adhering its upward extension to the inner surface of the upwardly sloping part of the shaped recess. Coupled with the fact that it is made of a rubber plate, it is possible to maintain a watertight state without dripping, and when the gate is opened, the gate hangs vertically from the nozzle body, so the gate opening/closing mechanism can be arranged as described above. Coupled with this, there is no problem at all when putting the nozzle body into and taking it out of the container during filling.

[Brief explanation of drawings]

The drawings show an embodiment of this invention. Fig. 1 is a longitudinal sectional view of a filling machine with a liquid filling nozzle attached, Fig. 2 is an enlarged sectional view of the liquid filling nozzle with some parts omitted, and Fig. 3 is a right side view of the filling machine. 4 are sectional views corresponding to FIG. 2 when the gate is opened. 5...Liquid filling nozzle, 8...Container, 10...
Nozzle body, 10a... one side wall, 11... gate, 11a... upper part of gate, 16... opening,
18... recess, 18a... upper slope of recess,
18b...Downward slope of the depression, 18c...Bottom of the depression, 19...Reinforcement plate, 20...Elevating bar, 22
...Rotation axis, 23...First lever, 24...Second
Lever, 29...Air cylinder (opening/closing operating device).

Claims (1)

[Claims for Utility Model Registration] A depression 18 in the shape of The upper extension part 11a of the rubber plate gate 11, in which the opening part 16 is obliquely closed inside the nozzle body 10 and the reinforcing plate 19 is attached to the outer surface, is stuck to the inner surface of the recess 18a, and the bottom part 18c of the recess 18 is attached.
A horizontal rotation axis 22 is disposed on the outer surface, and the rotation axis 22
A long first lever 23 extends diagonally downward inwardly from the inside and outside of the nozzle body 10 through a vertically long slit 25 formed in the downwardly inclined portion 18b of the recess 18, and a long first lever 23 extends diagonally downwardly outward from the outside of the nozzle body 10. The upper end of each of the extending short second levers 24 is fixed, and the first lever 23
The lower end of the nozzle body 1 is connected to the reinforcing plate 19 of the gate 11, and the lower end of the second lever 24 is connected to the reinforcing plate 19 of the gate 11.
The lower end of a lifting rod 20 that extends from above to below along one side wall 10a of 0 and is raised and lowered by an opening/closing actuator 29 is connected with a pin, and the gate 11 is approximately vertical at the upper limit of the lifting rod 20. Liquid filling nozzle that is made to be in condition.