BACKGROUND OF THE INVENTION
Field of the Invention

The present invention relates to a material guiding device.

Description of the Prior Art

Generally, when a large amount of material is transported, pneumatic means is used to transport the material to the target position through a tubular conveying passage. However, if the conventional conveying passage has a bent portion turning in a different direction, material accumulation often occurs and is retained in the bent portion of the pipeline. For transporting particle type materials, the material may even change its properties or qualities due to friction and collision of the pipe wall.

The present invention is, therefore, arisen to obviate or at least mitigate the above-mentioned disadvantages.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a material guiding device which provides smooth guiding effect.

To achieve the above and other objects, the present invention provides a material guiding device, including: a main body, including a first portion and a second portion which are coupled with each other, the first portion and the second portion defining a channel, the channel including an inlet portion and an outlet portion which commuted are with each other and a concave portion which is commuted between the inlet portion and the outlet portion, the inlet portion and the outlet portion extending respectively in a first extending direction and a second extending direction; in the first extending direction the concave portion being outwardly protrusive beyond the outlet portion, the concave portion being connected with the outlet portion and including a projection extending toward the first extending direction.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a stereogram of a preferable embodiment of the present invention;

FIG. 2 is a breakdown drawing of a preferable embodiment of the present invention;

FIG. 3 is a cross-sectional view of a preferable embodiment of the present invention;

FIG. 4 is a cross-sectional view, in use, of a preferable embodiment of the present invention;

FIG. 5 is a stereogram of a second preferable embodiment of the present invention; and

FIG. 6 is a cross-sectional view of the second preferable embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIGS. 1 to 4 for a preferable embodiment of the present invention. A material guiding device 1 of the present invention includes main body 1.

The main body 1 includes a first portion 11 and a second portion 12 which are coupled with each other, and the first portion 11 and the second portion 12 defines a channel 13. The channel 13 includes an inlet portion 14 and an outlet portion 15 which are commuted with each other and a concave portion 16 which is commuted between the inlet portion 14 and the outlet portion 15. The inlet portion 14 and the outlet portion 15 extend respectively in a first extending direction A and a second extending direction B extending. In the first extending direction A, the concave portion 16 is outwardly protrusive beyond the outlet portion 15. The concave portion 16 is connected with the outlet portion 15 and includes a projection 17 extending toward the first extending direction A. Whereby, the material guiding device can provide smooth guiding effect for material therein.

In a direction from the outlet portion 15 toward the inlet portion 14, an inner wall 131 of the channel 13 is tubularly curved along the projection 17. A caliber of the concave portion 16 is less than or equal to a caliber of the inlet portion 14 so that the material can move with air flow into the concave portion 16 and turns without direct impact to the inner wall 131. Preferably, the concave portion 16 is formed as a part of a sphere and entirely located between the outlet portion 15 and the first extending direction A, thus resistance against the inlet portion 14. A diametric dimension of the inlet portion 14 is larger than a diametric dimension of the concave portion 16 so that part of the material can be guided along the channel 13 to the gradually-expanding section 151 and is then discharged out, and part of the material comes into the concave portion 16 and follows the air flow to move to the outlet portion 15, thus preventing material accumulation, blocking or degradation of properties and qualities.

The outlet portion 15 and the projection 17 are connected and extend continuously and smoothly, and define a gradually-expanding section 151 extending toward the first extending direction. A caliber of the gradually-expanding section 151 is larger than a caliber of the concave portion 16, and the gradually-expanding section 151 and the inlet portion 14 partially overlap with each other so that part of the material can be directly discharged out and part of the material can be buffered in the concave portion 16 so as to stabilize the discharge flow of the material and is not easily stuck.

Specifically, each of the outlet portion 15 and the inlet portion 14 includes a coupling flange 18 at their respective peripheries, for connection to an opening 2, wherein each said coupling flange 18 includes a plurality of through holes 181 for fixation to the opening 2. Each of the first portion 11 and the second portion 12 includes a connection portion 111, 121 projecting at their respective peripheries, and the connection portion 111 of the first portion 11 and the connection portion 121 of the second portion 12 are detachably connected. Each said connection portion 111, 121 includes a plurality of a plurality of connection holes 112, and a plurality of fasteners 113 are disposed through the plurality of connection holes 112, thus tightly coupling the first portion 11 and the second portion 12. However, the first portion and the second portion may be coupled by riveting, screwing or the like. Preferably, a bridge portion 19 is connected between the inlet portion 14 and the outlet portion 15, a bridge portion 19 is connected between the concave portion 16 and the outlet portion 15, and each said bridge portion 19 is penetrated by at least one of the plurality of fasteners 113, thus having tight coupling. Preferably, each of the first portion 11 and the second portion 12 is integrally formed of one piece, thus preventing leakage.

As shown in FIGS. 5 and 6, in this embodiment, opening directions of the inlet portion 14a and the outlet portion 15a are perpendicular to each other, and the gradually-expanding section 151a is much more curved. However, the opening direction of the outlet portion and the curvature of the gradually-expanding section may be optional according to various requirements.

Preferably, the main body 1 is made of aluminum alloy, and the main body 1 includes a ceramic oxide layer formed by micro-arc oxidation treatment. The ceramic oxide layer may be partially or entirely formed on the inner wall 111 of the main body 1, thus being corrosion resistant and wear resistant. However, the ceramic oxide layer may be partially or entirely formed on the outer wall of the main body 1.

Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.