JPS6338178Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pneumatic transport device, and more particularly to a pneumatic transport device capable of transporting powder while rotating it in a spiral manner.

Most powders are transported by air flow, and various pneumatic transport devices have been proposed.

Conventional pneumatic conveying devices of this type have a structure in which the powder is fluidized by blowing air into it, and the powder is conveyed through a pipe to a target position in a large air flow.

For this reason, in most cases only linear force acts on the powder, and the powder is mostly transported in a straight line.

When transported under a linear force, it ends up being pushed out, so
In some cases, there was a problem that clogging occurred.

The present invention was developed in view of the above circumstances, and aims to provide a pneumatic transport device configured to transport powder extremely efficiently by imparting spiral motion to the powder. The purpose is

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

1 to 4 are diagrams for explaining an embodiment of the present invention. In the drawings, reference numeral 1 denotes a compressor. This compressor 1 includes pipes 2,
3 is connected to Bessels 4 and 5.

The upper portions of the vessels 4 and 5 are formed into a cylindrical shape, and the lower portions thereof are formed into a cone shape.

Powder is alternately supplied to the vessels 4 and 5, and a ring pipe 6 having a structure as described later is arranged below the cylindrical portion of each vessel.

Further, the lower portions of the vessels 4 and 5 are constricted into a funnel shape, and the pipes 2 and 3 are connected not only to the ring pipe 6 but also to the cone portion 4 at the bottom of the vessels 4 and 5.
It is also connected to the lower end portions of a and 5a.

The cone portions 4a and 5a are connected to pipes 7 and 8, respectively, and these pipes 7 and 8 are for transporting the powder to a destination.

Further, the outlet ends of the ring pipe 6 are connected to pipes 7 and 8, respectively.

By the way, the ring pipe 6 has a structure as shown in FIGS. 2 to 4.

That is, on the lower surface of the ring pipe 6, as shown in FIG. 3, a plurality of notches 6a, which are long holes forming part of a spiral, are formed at a predetermined pitch. That is, the notch 6a, which is a long hole, is formed so that its longitudinal direction is inclined in a certain direction with respect to the axis of the ring pipe 6.

These notches 6a are not formed so that the cross section intersecting the longitudinal direction of the elongated hole is oriented vertically downward as shown in the enlarged view in FIG. It faces toward the center of the portion 5a.

Since this embodiment is configured as described above,
Compressed air from compressor 1 is delivered to ring pipe 6
When the air is supplied to the helix, air is ejected from the notch 6a formed as part of the spiral. This air flow is accompanied by a spiral rotational movement as a whole, and an intense spiral air flow is generated within the cone portions 4a and 5a, giving a spiral rotation to the powder while cone portion 4a , 5a, and then in the direction of pipes 7 and 8.

As described above, in the present invention, the ejection ports are composed of elongated holes, and the jet ports themselves are inclined with respect to the axial direction of the ring pipe, and are provided in large numbers at predetermined pitches along the axial line of the ring pipe. Because there are
A wide band of air is ejected evenly around the entire circumference toward the bottom of the Betsu cell as a swirling flow, and this ejected flow becomes a spiral flow toward the center of the cone, ensuring that the powder inside the Betsu cell is removed. It can be transported downward and fed into the subsequent transport pipes 7 and 8 as it is.

Since the air flow supplied from the pipes 2 and 3 is supplied to the pipes 7 and 8 from the lower ends of the cone portions 4a and 5a, the powder is moving in a spiral motion on this air flow. can be transported.

Because the powder moves in a spiral motion, it is not only transported in a straight line with force applied to it as in the past, but also transported while being reliably fluidized without clogging, etc. as in the past. transport efficiency can be significantly increased.

As is clear from the above explanation, since the present invention has the configuration as described in the claims of the utility model registration, a wide belt-shaped air is ejected from the ring pipe evenly all around the bottom of the Betsu cell, forming a swirling flow. Furthermore, since this ejected flow becomes a spiral flow toward the center of the cone, the powder inside the Betsu cell can be reliably transferred downward and sent directly into the subsequent transport pipes 7 and 8. can. That is, it is possible to apply a spiral rotational motion to the powder in the vessel or in the subsequent transportation piping, thereby promoting fluidization of the powder and achieving extremely efficient pneumatic transport.

[Brief explanation of the drawing]

The figure is for explaining one embodiment of the present invention.
The figures are schematic configuration diagrams for explaining the overall structure, FIG. 2 is a vertical cross-sectional side view of the ring pipe, FIG. 3 is a partially enlarged bottom view of the ring pipe, and FIG. 4 is a partial vertical cross-sectional view of the ring pipe. 1... Compressor, 2, 3, 7, 8... Piping, 4, 5... Betsu cell, 6... Ring pipe,
6a...notch.

Claims (1)

[Scope of utility model registration request] It is formed by a cylindrical part and a cone part connected to the lower part, and blows out air to fluidize the powder stored in the betsu cell downward into the betsu cell that constitutes a part of the air transport device. In a pneumatic transport device equipped with a ring pipe, the lower surface of the ring pipe has a longitudinal center line inclined in a certain direction with respect to the axis of the ring pipe, and
A pneumatic transport device characterized in that a plurality of notches each consisting of a long hole whose cross section is inclined at a certain angle toward the center of the cone portion of the betsu cell are provided at a predetermined pitch along the axis of the ring pipe.