JPH07251912A - Screw conveyor - Google Patents

Abstract

PURPOSE:To provide a screw conveyor which allows transportation of a substance despite in a paste form without risk of sticking to the blade of the screw. CONSTITUTION:A screw 7 of such a structure that a continuous blade 6 is formed spirally on the periphery of a rotary shaft 5, is installed within a transport path 3, and thus a screw conveyor is formed, wherein scratch rods 10 which protrudes from the inner wall of the transport path 3 toward the rotary shaft 5 of the screw 7 and is inserted so as to be positioned between blade segments 6, are installed in such an arrangement as laid alongside the rotary shaft 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw conveyor provided with a screw in a conveying path, and more particularly to a screw conveyor used for conveying a paste-like substance which tends to stick to the blades of the screw.

[0002]

2. Description of the Related Art When a paste-like substance such as activated carbon for casting or kneaded food is conveyed by using a screw conveyor, the paste-like substance sticks to the blades of the screw in the conveying path, and the substance is conveyed. There was a problem that it interfered with.

Therefore, the present invention is intended to provide a screw conveyor which prevents sticking of the screw to the blade when the paste-like substance is conveyed.

[0004]

In order to solve the above problems, the present invention provides a screw conveyor in which a screw having spiral blades formed on the outer periphery of a rotary shaft is installed in a conveyor path. The scraping rods protruding from the inner wall toward the rotation axis of the screw and inserted so as to be located between the blades of the screw are provided so as to be lined up along the rotation axis of the screw.

[0005]

Operation: Even if the object to be conveyed adheres to the surface of the blade of the screw, the scraping rod is inserted between the blades of the screw. Therefore, when the screw rotates in the conveying path, the scraping rod causes the screw to rotate. The object to be conveyed on the surface of the blade of is scraped off, and the object to be conveyed is prevented from adhering to the surface of the blade of the screw.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The screw conveyor 1 is provided along the bottom of a hopper 2 for receiving an object to be conveyed, and a tube-shaped conveyance path 3 projects laterally of the hopper 2, and on the lower surface of the projecting conveyance path 3, The discharge port 4 is formed.

A screw 7 having a blade 6 formed in a spiral shape on the outer circumference of a rotary shaft 5 is installed in the conveying path 3. The screw 7 is connected to a motor 9 via a speed reducer 8 so as to rotate in the transport path 3.

On the side wall of the conveying path 3 provided along the bottom of the hopper 2, a scraping rod 10 made by bending spring steel into a U-shape is provided from the inner wall of the conveying path 3 to the rotary shaft 5 of the screw 7.
And is inserted so as to be located between the blades 6 of the screw 7 and between the blades 6. The scraping rod 1
Reference numeral 0 denotes a reinforcing plate 11 arranged along the rotary shaft 5 of the screw 7 at a constant interval and fixed to the outer wall surface of the transport path 3 by welding or the like, and a presser foot fixed to the reinforcing plate 11 by a bolt 12. It is held by the plate 13.
In addition, when the liquid to be transferred is contained in the hopper 2, the pressing plate 13 and the reinforcing plate 11 are combined so that the liquid does not leak from between the pressing plate 13 and the reinforcing plate 11. Put packing in between.

When the object to be conveyed is loaded into the hopper 2 and the motor 9 is driven to rotate the screw 7, the object to be conveyed is conveyed by the blades 6 of the screw 7 to the side of the hopper 2 of the conveying path 3. It is pushed toward one end and discharged from the discharge port 4 at one end of the transport path 3.

Even if the material to be conveyed is pasty and adheres to the blade 6 of the screw 7, when the screw 7 rotates, the scraping rod 10 inserted between the blade 6 of the screw 7 and the blade 6 covers the object. Since the transported object is scraped off, the transported object is discharged from the discharge port 4 in a fixed amount without sticking to the blade 6 of the screw 7.

[0012]

As described above, the screw conveyor of the present invention has an effect that even a paste-like object can be carried without any trouble.

[Brief description of drawings]

1A is a plan view showing an example of a screw conveyor according to the present invention, and FIG. 1B is a side view.

FIG. 2 is a partially enlarged transverse plan view of the same as above.

FIG. 3 is a partially enlarged vertical front view of the above.

[Explanation of symbols]

 1 Screw Conveyor 2 Hopper 3 Conveying Path 4 Discharge Port 5 Rotating Shaft 6 Blades 7 Screw 8 Reducer 9 Motor 10 Scraping Rod 11 Reinforcing Plate 12 Bolt 13 Holding Plate

Claims (2)

[Claims] 1. In a screw conveyor in which a screw having spiral blades is installed on the outer circumference of a rotary shaft in a transport path, the screw conveyor protrudes from the inner wall of the transport path toward the rotary shaft of the screw, and A screw conveyor, wherein scraping rods inserted so as to be located between them are provided so as to be lined up along a rotation axis of the screw. 2. The screw conveyor according to claim 1, wherein the scraping rod is made of spring steel.