JPH0443513Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a nozzle used for injecting and filling containers with liquids for consumption such as milk, juice, soy sauce, and sauces, and particularly for liquids containing fibrous materials. It is also effective for

[Conventional technology]

A filling nozzle used in a machine that automatically fills containers with liquid has a mesh layered over the injection port.

This is aimed at rectifying the liquid injected and ejected from the nozzle, softening the injection and ejection force, and especially draining water after a certain amount has been injected.

[Problem that the invention attempts to solve]

By layering several nets around the inlet, liquid is retained and drained between the nets and by the mesh.

That is, the liquid is passed from the tank to the nozzle via the pressure-feeding section and the connecting pipe, and a check valve is interposed between the tank and the pressure-feeding section and between the connecting pipe and the nozzle, and a piston installed in the pressure-feeding section transfers the liquid from the pressure-feeding section to the nozzle. The check valve connected to the nozzle is pushed open to force the liquid to fall into the container below the nozzle.

When the pressure on the piston is reduced, the check valve leading to the nozzle closes, and at the same time, the forced drop of liquid stops, but the remaining liquid that fills the nozzle tends to fall as water droplets due to its own weight.

Therefore, by draining the water using the net, the injection time can be specified, unnecessary liquid can be prevented from falling, and a fixed amount of liquid can be injected.

The reason why the inside of the nozzle is always filled with liquid is to keep the injection amount constant depending on the opening time of the check valve.

However, since the residual liquid that fills the nozzle is retained by using the surface tension between the mesh bodies and the mesh to prevent water droplets from falling, it is possible to prevent water droplets from falling. The sauce, etc., swells larger than between the meshes and binds to each other, resulting in a state similar to that of surface tension occurring across the entire injection port, causing water droplets to grow larger and fall, making it impossible to achieve the intended purpose.

In addition, in the case of liquids containing fibers such as di-use, the fibers get caught in the mesh and block the mesh, reducing the injection speed and not matching the transfer speed of the container, making it necessary to clean or replace the nozzle. .

On the other hand, it has also been confirmed that water droplets are generated when liquid adhering to the lower end surface of the nozzle connects and coagulates.

In view of this, the present invention aims to provide a nozzle that can reliably flow down and drain even adhesive liquids and liquids containing fibers.

[Means for solving problems]

In order to achieve the above object, the present invention has an injection port formed by a series of many thin tubes with gaps between them, the lower ends of the thin tubes hanging down from the lower end surface of the nozzle body, and the upper end surfaces rising from the bottom surface inside the nozzle. It is characterized by an upward slope.

[Effect]

Next, to explain the operation, since the injection port of the nozzle is composed of a large number of thin tubes, the liquid passes through each thin tube, is rectified from the entire injection hole, and is ejected in a shower shape.

Since the liquid is sucked into each capillary, the fibrous contents are also sucked and ejected without being caught at the capillary entrance.

Next, when the pressure on the piston is reduced and the check valve closes, the flow of liquid stops, and the liquid remains inside the nozzle, creating surface tension at the outlet of each capillary of the inlet and retaining the liquid. The capillary has a length, and each capillary is independent with a gap between each other, so each water droplet does not connect and aggregate, and the small inner diameter of the capillary strengthens the liquid retention force due to surface tension. The area of the end face is small and the water draining effect can be reliably achieved.

On the other hand, if the injection liquid contains fibrous substances, the substances remaining in the nozzle will fall when not injected, but since the upper end of the capillary is located above the bottom surface of the nozzle, the upper end of the capillary The lower residual liquid contents settle to the bottom of the nozzle.

In addition, since the amount of residual liquid above the upper end of the capillary is small, its contents do not block the upper end.

〔Example〕

The drawing shows an embodiment of the present invention, in which a nozzle 10 is attached to the tip of a connecting pipe 2, a valve seat 3 is interposed between the connecting pipe 2 and the nozzle 10, and a check valve 4 is fitted with a spring. 5 is pressed upward and locked, and normally prevents liquid from flowing down to the nozzle 10.

A support plate 12 is fitted to the injection port 11 of the nozzle 10, and the thin tubes 1 are inserted into a large number of through holes formed in the support plate 12.
3, 13... are inserted to form a forest of thin tubes 13, 13...
The injection port 11 is formed by the thin tubes 13, and the thin tubes 13 are positioned with a gap between them, and the lower end surface 1 of each thin tube 13 is
3a hangs down from the lower end surface 10a of the nozzle body,
Further, the upper end 13b stands up from the bottom surface 10b inside the nozzle and is in an upper position.

Therefore, the liquid flowing down into the nozzle 10 passes through each of the thin tubes 13, 13, and is ejected.

Each thin tube 13 has a certain length, and the length and the inner diameter of the thin tube 13 are appropriately selected depending on the viscosity of the liquid, the fiber content, etc.

14 is a rectifying plate installed horizontally within the nozzle 10;
A large number of through holes 15 are drilled to lower the check valve 4,
It rectifies the unevenly flowing liquid into an even flow.

[Effect of idea]

As described above, in this invention, the injection port of the nozzle is formed by a series of thin tubes, so that the liquid flows down with a rectifying effect so that it is sucked into each thin tube, and the liquid containing fibrous contents is also caught. It can be poured into a container without any trouble.

Since each capillary injects liquid in an independent state with a gap between each other, each capillary is not influenced by other capillaries when not injected, and each capillary hangs down from the lower end surface of the nozzle body. Surface tension is generated at the lower end of the capillary, and because the inner diameter and lower end have a small area and length, the cohesive force of liquid molecules acts strongly, and the water draining effect is exerted.

Furthermore, since the upper end of each capillary is located above the bottom surface of the nozzle, it is possible to prevent the upper end port from being clogged due to sinking of fibrous substances in the residual liquid during non-injection.

Therefore, even with highly adhesive liquids and liquids containing fibrous substances, draining and quantitative injection can be performed without any problem.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional side view showing an embodiment of the present invention. 10 is the nozzle, 10a is the lower end surface of the nozzle body, 10b is the bottom surface inside the nozzle, 11 is the injection port,
13 is a thin tube, 13a is a lower end, and 13b is an upper end.

Claims (1)

[Scope of utility model registration request] A liquid characterized in that the injection port is formed by a number of thin tubes standing together with gaps between them, the lower ends of the thin tubes hang down from the lower end surface of the nozzle body, and the upper end surfaces rise from the bottom surface within the nozzle. filling nozzle.