JPS5853352Y2 - Funnel for overflow tube - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a funnel to be attached to a liquid inlet at the upper end of an overflow.

A liquid storage tank is provided with a pipe called an overflow pipe to allow excess liquid to overflow when it is supplied into the tank.

The lower end of this pipe is outside the tank, and the upper end opens into the upper part of the tank. When the liquid level in the tank attempts to exceed the upper end of the overflow pipe, the liquid flows into the overflow pipe and exits the tank. is discharged to.

A cylinder (hereinafter referred to as a funnel) whose upper end is enlarged into a trumpet shape is attached to the upper end of the overflow pipe so that the liquid can easily flow into the overflow pipe.

The diameter of the overflow pipe is changed depending on the capacity of the tank or the ability to supply liquid into the tank.

Therefore, it was necessary to prepare funnels with various diameters to be attached to the overflow pipe.

Therefore, it was desired to be able to attach one funnel to overflow pipes of various pipe diameters.

On the other hand, the funnel is equipped with a net that closes the inside of the funnel to prevent insects and small animals from entering the tank through the overflow pipe.

Conventionally, in order to prevent the mesh from being damaged during transportation of the funnel, it has been common to attach the mesh so that the surface of the mesh is located inside the funnel.

However, when the screen is attached as described above, there is a risk that the garbage in the tank will get onto the screen, clogging the screen and causing the overflow pipe to lose its function.

Therefore, it was desired to prevent trash from clogging the mesh.

The inventor thought that the tube end of the funnel could be reduced in size with a step so that it could be cut at an appropriate thickness for use, thereby making it possible to attach it to overflow tubes of various thicknesses.

We also thought of making the mesh surface bulge outward along the axial direction of the cylinder so that even if dirt adhered to it, it would fall off naturally.

This idea was made based on this idea.

That is, this invention is a funnel in which one end of a cylinder is enlarged in a trumpet shape, and a mesh is attached to the open end of the enlarged part to close it, and the mesh surface is bulged outward along the axial direction of the cylinder. This is a funnel for an overflow pipe, which is formed by reducing the other end of a cylinder with a step.

The overflow pipe funnel according to this invention will be explained as follows based on the drawings.

1 to 4 are cross-sectional views showing an example of an overflow pipe funnel according to this invention.

FIG. 5 is a partially cutaway sectional view showing the state in which the overflow pipe funnel according to this invention is used.

In FIG. 1, one end of the cylinder 1 is enlarged into a trumpet shape, and a net 2 is attached to the open end of the enlarged portion 11 to close it.

The net surface of the net 2 bulges outward in the axial direction of the cylinder 1.

A step 12 is provided on the other end side of the cylinder 1, and the outer diameter is reduced for each step.

What is constructed in this way is the overflow pipe funnel a according to this invention.

In the funnel a, the enlarged portion 11 of the cylinder 1 may have a conical surface shape, or may have a shape in which the conical surface is depressed inwardly or outwardly.

It is desirable to provide the inner surface of the enlarged portion 11 with a protrusion 13 that is slightly curved and extends from the open end side toward the base side.

This protrusion 13 serves to cause the liquid flowing into the funnel to flow in a spiral shape without colliding within the cylinder 1.

The cylinder 1 may have an arbitrary number of steps 12 of one or more.

The width W of the step is arbitrary, but for example, if the outer diameter of the cylinder 1 is 2
00 mm, the appropriate width of the step is about 25 mm on one side, and when the outer diameter of the cylinder 1 is 80 mm, the appropriate width of the step is about 5 to 15 mm on one side.

It is desirable that the outer diameter of the original cylinder 1 and the outer diameter of the reduced portion match the inner diameter of the overflow pipe.

The net 2 may be a plate with many holes,
Alternatively, it may be a combination of filaments in the form of a woven fabric.

In the bulging shape of the mesh surface, bulging outward along the axial direction of the cylinder may be defined as protruding from the base in the axial direction, and may include a flat portion in part.

Such shapes include a spherical shape, a conical shape, a truncated conical shape, an inverted truncated conical shape, and the like.

In the illustrated example, it bulges out in a spherical shape.

The peripheral edge of the net 2 is fixed to the open end of the enlarged part 11.

When fixing, it is desirable to attach a ring 21 to the periphery of the net 2 and to fit the ring 21 into the open end of the enlarged portion 11.

When fitting, it may be fixed using an adhesive, or a thread may be provided on the fitting surface and screwed.

The cylinder 1 and the mesh 2 are suitably made of metal or synthetic resin (eg, vinyl chloride resin, polyethylene, polypropylene, etc.).

What is shown in FIG. 1 is one of the basic embodiments of the overflow pipe funnel according to this invention.

This idea also includes some modifications.

For example, in the overflow pipe funnel of this invention shown in FIG. 2, the mesh 2 bulges out from the open end of the enlarged portion 11 in a conical shape.

Further, the ring 21 is fitted on the outside of the enlarged portion 11.

In the overflow pipe funnel C of this invention shown in FIG. 3, a portion 22 of the mesh 2 is made integrally with the enlarged portion 11.

In the funnels A to C described above, when the dirt adhering to the screen 2 comes into contact with the liquid, those with a light specific gravity float to the surface, and those with a heavy specific gravity fall.

Further, on the part 22 of the net of the funnel C, the attached dust falls due to gravity.

In the overflow pipe funnel d of this invention shown in FIG. 4, the net 2 is composed of a bowl-shaped part 23 and a lid-shaped part 24, and has an inverted truncated conical shape as a whole.

As a result, the mesh surface protrudes axially from the base and bulges outward along the axial direction of the cylinder.

In this net, since the liquid passes through the bowl-shaped portion 23, the liquid passes through the bowl-shaped portion 24.
may not have holes.

In this funnel d, the dust adhering to the bowl-shaped portion 23 falls due to gravity.

The overflow pipe funnel according to this invention is used, for example, as follows.

In Figure 5, the side wall 3 of the tank is connected to the overflow pipe 4.
is penetrated.

The upper end of the overflow pipe 4 is inside the tank, and a funnel a according to the invention is attached to the upper end.

When attaching the cylinder 1, the part with the smallest diameter (indicated by the dotted line) is cut off, and the next part is inserted into the tube 4.

Note that the side wall 3 of the tank may be a single plate or may be assembled from unit plates.

In the illustrated example, it is assembled from unit plates each having a joining edge 32 provided on the periphery of a substrate 31.

A funnel for an overflow pipe according to this invention is a funnel in which one end of a cylinder is thickened in a trumpet shape, and a net is attached to the open end of the enlarged part to close the net, with the net surface extending outward along the axial direction of the cylinder. Since the mesh is bulged out, even if dirt adheres to the screen,
be washed away by liquid or fall off naturally under its own weight.

Therefore, clogging of the mesh is prevented.

Furthermore, since the other end of the cylinder is reduced in size with a step, it can be attached to overflow pipes of various thicknesses by cutting it at an appropriate thickness.

As described above, the overflow pipe funnel of this invention has excellent advantages and is of great practical value.

[Brief explanation of the drawing]

1 to 4 are sectional views showing an example of the funnel for overflow pipes of this invention, and FIG. 5 is a partially cutaway sectional view showing the use state of the funnel for overflow pipes of this invention. In each figure, a to d are the funnels of this invention, 1 is the cylinder, 2 is the mesh, 3 is the side wall of the tank, 4 is the overflow pipe,
11 is an enlarged part, 12 is a step, 13 is a protrusion, 21 is a ring, 22 is a part of the net, 23 is a bowl-shaped part, and 24 is a lid-shaped part.

Claims (1)

[Scope of utility model registration request] In a funnel in which one end of a cylinder is expanded into a trumpet shape and a net is attached to the open end of the enlarged part to close it, the net surface is expanded outward along the axial direction of the cylinder, and the other end of the cylinder is expanded. A funnel for overflow pipes, which is made by reducing the size with steps.