JPS5926550B2 - Filling nozzle for filling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a filling nozzle used in a filling machine for filling containers with liquid.

Conventional technology FIG. 1 shows a filling machine with a conventional filling nozzle.

The drawbacks of the conventional product will now be explained with reference to the same figure.

The filling machine includes a filling liquid tank 1, a filling cylinder 2 connected vertically to the bottom of the tank 1 so as to communicate with a discharge port raised at the bottom, and provided with check valves 3 and 4 at the top and bottom. A metering cylinder 6 which is connected to an intermediate communicating short cylinder section provided horizontally in the middle of the height of the filling cylinder 2 through an inverted U-shaped connecting pipe 8 and has a built-in piston 7, and a filling cylinder 2. The filling nozzle 5 is detachably connected to the lower end of the filling nozzle 5.

A wire mesh 9 is provided at the lower end opening of the nozzle body 5A of the filling nozzle 5.
is installed, and the liquid in the filling nozzle 5 is prevented from flowing down due to its surface tension.

During filling, an empty container B is positioned directly below the filling nozzle 5, and the filling nozzle 5 is pushed up so as to be inserted into the container B by the lifting rod 30 that receives the bottom of the empty container B.

Next, when the piston 1 in the raised position is lowered as shown in the figure, the upper check valve 3 opens and the liquid in the tank 1 flows down into the filling cylinder 2 and flows into the metering cylinder 6 through the connecting pipe 8. do.

When the metering cylinder 6 is filled with liquid, the piston 1 is raised.

Then, the lower check valve 4 opens and the liquid in the filling nozzle 5 passes through the wire mesh 90 and is discharged into the container B.

At this time, the lifting rod 30 is lowered corresponding to the rise of the piston γ, and the filling nozzle 5 is removed from the container B, while filling the container B with liquid.

By the way, the conventional filling nozzle 5 has no problem with liquids with good fluidity such as milk, but if the liquid contains pulp or fibrous substances, the presence of the wire mesh 9 slows down the discharge and causes the liquid to flow. Not only is it difficult to cut, but the pulp and the like clog the wire mesh 9.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a filling nozzle for a filling machine that is capable of high-speed filling in a normal interliquid-like manner without any problems even when liquids are mixed with pulp or fibrous substances.

Structure of the Invention In order to achieve the above object, the filling nozzle for a filling machine according to the present invention includes a cylindrical nozzle body, a damper attached to the lower end of the nozzle body so as to be movable in the vertical direction, and a damper attached to the upper end of the nozzle body. A spring hanging member whose arrangement is fixed, a coil spring suspended from the spring hanging member, a connecting member connecting the lower end of the coil spring and the free end of the damper, and a coil fixed to the connecting member. A resistor against flowing liquid is provided below the spring.

Examples and effects This invention will be explained below with reference to FIG.

A filling nozzle 10 for a filling machine according to the present invention includes a cylindrical nozzle body 11, a damper 12 attached to the lower end of the nozzle body 11 so as to be movable in the vertical direction, and a spring suspension arranged and fixed at the upper part of the nozzle body 11. A hanging member 19, a coil spring 13 suspended from the spring hanging member 19, a connecting member 14 connecting the lower end of the coil spring 13 and the free end of the damper 12, and a connecting member 14 fixed to the connecting member 14. Coil spring 13
Resistance element 15 for flowing liquid located below
It becomes more.

An annular nut 16 is fitted into the large-diameter upper end portion 11A of the nozzle body 11, and the annular nut 16 is screwed and fixed to the male threaded portion provided at the lower end of the filling cylinder 2. It receives a flange 1γ provided at the upper end.

The hanging member 19 has a Y-shape when viewed from above,
Liquid is designed to pass between each arm 19A.

A U-shaped spring hook 1 is attached to the center of the bottom of the hanging member 19.
8 is attached to which the upper end of the coil spring 13 is latched.

A male threaded portion 20 is provided at the lower end of the nozzle body 11, to which a female threaded portion 22 of a damper mounting cylinder 21 is screwed.

The damper 12 is a double door type with a V-shaped longitudinal section and a pair of opening/closing plates 12A and 12B.

A horizontal pin hole 2 is provided in the base 24 of the opening/closing plates 12A and 12B.
5 is bored, and both ends of the pin 26 inserted through the hole are received in the holes of the hanging ears 23 provided at the lower end of the damper mounting cylinder 21.

The connecting member 14 includes one relatively long lower rod 14A and two relatively long lower rods.
It consists of relatively short lower rods 14B and 14C of the book.

The upper and lower ends of the lower rod 14A are both bent into an annular shape, and the upper annular portion is hooked to the lower end hook portion of the coil spring 13, and the lower annular portion is hooked to the upper end hooks of the two lower rods 14B and 14C. The part is latched.

The lower ends of both lower bars 14B and 14C are connected to a pair of opening/closing plates 12A.
, 12B are inserted into holes in upwardly protruding ears 27 provided at the center of the upper surface of the free ends of each of them and latched thereon.

The resistor 15 is made of a plastic sphere, and a lower rod 14A is inserted through a through hole in the center thereof, and the resistor 15 is fixed near the upper end of the lower rod 14A.

The material of the resistor is not limited to plastic, and its form can be changed as appropriate.

In the above, it is assumed that the resistor 15 does not exist.

By the way, the spring force of the coil spring 13 must be able to keep the damper 12 in the closed state against the gravity of the liquid in the damper 12 and the filling nozzle 10.

Therefore, when the filling operation is performed in the same way as the conventional product, the damper 12 is opened by the hydraulic pressure that resists the force of the coil spring 13, but the degree of opening is small because of the spring force. Discharge cross-sectional area is small.

Therefore, the flow rate of the liquid poured into the container B from the lower end discharge port of the nozzle 10 becomes faster.

If the flow rate is high, the liquid will violently collide with the bottom of the container B and agitate the liquid, resulting in the generation of air bubbles, which will cause an unfavorable phenomenon in terms of liquid filling.

The only way to slow down the flow rate of the liquid is to slow down the quantitative filling rate.

When the damper 12 is used instead of the wire mesh 90 in the conventional product, the problem of clogging does not occur as with the wire mesh even if pulp and fibrous substances are mixed in the liquid, but there is a drawback that high-speed filling is not possible. be.

However, in the filling device according to the present invention, since the resistor 15 is present, the above problem does not occur.

That is, when the lower check valve 4 opens and liquid is sent from the filling cylinder 2 to the filling nozzle 10, it hits the resistor 15.

As a result, the flowing liquid pressure applied to the resistor 15 is applied to the connecting member 1
4 as a force to push the damper 12 open against the coil spring 13, the opening degree of the damper 12 increases and the discharge cross-sectional area becomes a dog.

As the discharge cross-sectional area becomes larger, the flow rate of the discharged liquid inevitably becomes slower, and the generation of air bubbles as described above does not occur.

When the quantitative filling is completed, the hydraulic pressure applied to the damper 12 and the resistor 15 is removed, so the damper 12 is automatically closed by the force of the coil spring 13.

Incidentally, the filling nozzle according to the present invention can of course be used for filling a liquid that is not mixed with fruit pulp or the like.

Effects of the Invention The filling nozzle for a filling machine of the present invention has a cylindrical nozzle body 11.
, a damper 12 attached to the lower end of the nozzle body 11 so as to be movable in the vertical direction, a spring hanging member 19 arranged and fixed at the upper part of the nozzle body 11 , and a spring hanging member 19 .
a connecting member 14 connecting the lower end of the coil spring 13 and the free end of the damper 12; and a connecting member 14 fixed to the connecting member 14 and positioned below the coil spring 13. Since the nozzle 15 is equipped with a resistor 15 against the flowing liquid, even if the liquid is mixed with pulp or fibrous substances, it will not be clogged during filling unlike the conventional filling nozzle 5 equipped with a wire mesh 9. There is no problem.

Moreover, since the presence of the resistor 15 allows a large opening degree of the damper 12 to be obtained, the discharge speed can be slowed down, and since air bubbles are not generated, high-speed filling is possible.

[Brief explanation of drawings]

Figure 1 is a longitudinal sectional view of a filling machine equipped with a conventional filling nozzle;
FIG. 2 is an enlarged longitudinal sectional view of a filling nozzle according to the invention. 10... Filling nozzle, 11... Cylindrical nozzle body, 12... Damper, 13...
Coil spring, 14... Connection member, 15...
...Resistor, 19... Spring hanging member.

Claims (1)

[Claims] 1 A cylindrical nozzle body 11, a damper 12 attached to the lower end of the nozzle body 11 so as to be movable in the vertical direction, and a spring hanging member 19 arranged and fixed at the upper part of the nozzle body 11.
and a coil spring 13 suspended from a spring suspension member 19.
, a connecting member 14 connecting the lower end of the coil spring 13 and the free end of the damper 12 , and a resistor 15 against flowing liquid fixed to the connecting member 14 and positioned below the coil spring 13 . Equipped with a filling nozzle for filling machines.