JPH05116734A - Screw conveyor device - Google Patents

Abstract

PURPOSE:To provide a labor-saving and economical screw conveyor device by stirring, mixing and drying a conveyed body on the way of conveyance. CONSTITUTION:A screw 13 is constituted of a spiral blade 15, having a hollow part 14 in a central part thereof and freely rotatable around an axis 13A passing through the hollow part 14, and claws 16 provided on the blade 15 for scraping up a conveyed body inside a transport pipe 10, and air for drying is to be supplied to the hollow part 14 of the blade 15. With this constitution, inside the transport pipe 10 the claws 16 scrape up and drop the conveyed body to stir and mix the body, and the scraped up and dropped body is brought into contact with the air for drying during passing the hollow part 14. Thus, the conveyed body is stirred, mixed and at the same time dried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device for continuously conveying powdery substances such as compost.

[0002]

2. Description of the Related Art For example, conventionally, a screw conveyor device has been used as a device for continuously transferring the compost (object to be transferred) produced in a fermentation tank of a stirring and conveying device to the outside. As shown in FIG. 4, this screw conveyor device includes, for example, a linear transport pipe 1 whose one end side is connected to a fermentation tank (not shown) of a stirring and transporting device, and a shaft 2A provided in the transport pipe 1. The screw 2 is rotatably provided around the center of the transport pipe, and the drive device 3 for driving the screw 2 is provided. The drive device 3 rotates the screw 2 in one direction, whereby the transport pipe 1 The fertilizer is continuously conveyed from one end side (the inlet indicated by the reference numeral 1A) to the other end (the outlet indicated by the reference numeral 1B), and the fertilizer is further conveyed from the other end side outlet 1B of the transport pipe 1. ing.

[0003]

By the way, in the above-mentioned screw conveyor device, since the inside of the transport pipe 1 is in a hermetically sealed state, when the transported body contains water and needs to be dried, the transported body is conveyed. It is necessary to separately add a step of drying the transported object after carrying out the product to the outside, resulting in a high equipment cost. On the other hand, since this screw conveyor device is only for continuously conveying the conveyed body in one direction, when the conveyed body is agitated and mixed to make the components uniform, the conveyed body is carried out to the outside. After that, it is necessary to separately add a step of stirring and mixing the transported object, and also in this respect, there is a problem that high equipment cost is required.

The present invention has been made in view of the above circumstances, and provides an economical screw conveyor device in which the object to be conveyed is agitated and mixed and dried during the conveyance, thereby saving labor. The purpose is to do.

[0005]

In order to achieve the above object, the present invention conveys a transportation pipe into which a transported body is fed, and a transported body which is disposed in the transportation pipe and fed into the transportation pipe. And a drive means for rotating the screw, the screw having a hollow portion along the length direction at the center thereof and rotatably provided around an axis passing through the hollow portion. A spiral blade, and a scraping member that is provided on the blade to scrape and drop the transported object in the transport pipe to an upper position of the transport pipe, and the transport pipe has a hollow portion of the blade. On the other hand, a drying air supply means for supplying drying air for drying the transported object is provided.

[0006]

According to these inventions, when the screw is rotated by the driving device, the transported object located at the bottom of the transport pipe is moved to the upper part of the transport pipe by the scraping member provided on the blade of the screw. It is scraped up to a position and then dropped at a position above the transport pipe. At this time, since the transported object dropped at the upper position of the transport pipe passes through the hollow portion of the blade, when the hollow portion is dropped,
The mixture is stirred and mixed, and dried by the drying air supplied to the hollow portion. On the other hand, since the scraping member that scrapes up the transported object is provided on the blade formed in a spiral shape, the spiraled blade causes the transported object scraped up in the longitudinal direction of the transport pipe. Sequentially sent, whereby the transported object is continuously transported in the transport pipe.

[0007]

Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing the whole of a screw conveyor device. In this figure, a reference numeral 10 is a transport pipe formed in a straight line, and one end side of the transport pipe 10 has, for example, a stirring transport device. Is provided with an input port 11 for receiving a transported object which is compost discharged from the fermenter (not shown), and the transported object transported in the transport tube 10 is discharged to the other end side of the transport tube 10. A discharge port 12 is provided. Further, inside the transport pipe 10, a screw 13 is provided for transporting the transported object sent into the transport pipe 10 in the direction of arrow A along the axis of the transport pipe 10.

The screw 13 has a hollow portion 1 at the center thereof.
And an axis 13 passing through the center of the hollow portion 14 thereof.
A spiral blade 15 that is rotatable around A, and blade 1
5 and a plurality of claws 16 provided on the transport pipe 10 to scrape up the transported object in the transport pipe 10.
The end portion 15A on the arrow A direction side of is fixed to a pipe-shaped shaft 17 (rotating around the axis 13A) rotatably supported with respect to the transport pipe 10, and thereby the blade is integrated with the shaft 17. 15 is designed to rotate. Further, the end portions 15A of the blades 15 are fixed to the peripheral surface of the shaft 17 over a constant length (indicated by reference symbol L), and the range indicated by the reference symbol L is the screw conveyor shown in FIG. It has the same configuration as the device. The axis 13A provided at the center of rotation of the screw 13 is provided along the length direction of the screw 13 and is also provided so as to coincide with the center line of the transport pipe 10.

On the other hand, the claw 16 has a blade 1 as shown in FIG.
5 and the blade 15 are arranged in a positional relationship parallel to the axis 13A, and a plurality of claws 16 are arranged so as to be displaced by a constant distance along the direction of the arrow A. The claw 16 is designed to rotate integrally with the axis 13A of the transport pipe 10 as a center. By the operation of the claw 16 as described above, the transported object located at the bottom of the transport pipe 10 is scraped up to the upper position of the transport pipe 10 by the claw 16 and further dropped at the upper position of the transport pipe 10. Be done. Further, since the claw 16 is provided on the blade 15 formed in a spiral shape, the spiral blade 15 allows the conveyed object scraped up to be continuously conveyed in the transport pipe 10 in the direction of arrow A. It has become.

On the other hand, the shaft 17 to which the end portion 15A of the blade 15 is fixed is driven by a driving device 18. The drive device 18 includes a sprocket 19 fixed to a shaft 17, a motor 20 as a drive source, and the motor 20.
It is composed of a sprocket 22 fixed to the output shaft 21 and a chain 23 for connecting the sprocket 19 and the sprocket 22 and transmitting the driving force of the motor 20 to the shaft 17.

On the other hand, the shaft 17 to which the blade 15 is fixed is formed in a pipe shape, and the pipe portion 1 of the shaft 17 is formed.
Hot air (air for drying) is supplied to the hollow portion 14 of the blade 13 via 7A. This hot air is supplied from a hot air supply source (not shown), so that the transported object falling in the hollow portion 14 (which is scraped up by the claw 16 to the upper portion of the transport pipe 10 and dropped) is dried. I have to. In this example, the hot air is blown from the pipe portion 17A of the shaft 17, but the present invention is not limited to this, and dry air (drying air) may be blown instead of the hot air.

Next, the operation of the screw conveyor device constructed as described above will be described. (1) When the motor 20 is turned on, the shaft 17 is rotated in the direction of arrow B (see FIG. 3) via the output shaft 21, the sprocket 22, the chain 23, and the sprocket 19 sequentially. By such rotation of the shaft 17 in the direction of the arrow B, the transported object located at the bottom of the transport pipe 10 is moved to the upper position of the transport pipe 10 by the claws 16 provided on the blades 15 of the screw 13. It is scraped up to the upper position of the transport pipe 10 and dropped. Further, since the claw 16 that scrapes up the transported object is provided on the blade 15 that is formed in a spiral shape, by rotating integrally with the spiral blade 15, the transported object that is scraped up and dropped. Body is a transport tube 1
The transferred object is sequentially sent in the direction of arrow A within 0, and the transferred object is continuously conveyed in the arrow A direction by repeating such scraping and dropping of the transferred object.

(2) At this time, the transported object dropped at the upper position of the transport pipe 10 is the hollow portion 1 of the blade 15.
When passing through the hollow portion 14, the hot air supplied from the pipe portion 17A of the shaft 17 is received and the transported object is dried by the hot air when passing through the hollow portion 14. (3) Further, the rotation of the shaft 17 in the direction of the arrow B repeatedly scrapes and drops the transported object,
As a result, the transported body is agitated and mixed, and as a result, the components of the transported body are made uniform.

According to the screw conveyor device as described above, the object to be conveyed is picked up by the pawls 16 in the conveying pipe 10 and dropped to be sequentially conveyed in the direction of arrow A. The transported object is efficiently agitated and mixed as it is transported, and on the other hand, when the transported object that has been scraped up and dropped passes through the hollow portion 14, it is exposed to hot air, so that the transported object is agitated and mixed. It will be dried at the same time. That is, according to the screw conveyor device, during the transportation of the transported object, the transported object can be agitated and mixed and dried.
It is not necessary to add a device such as a drying device, and this has the effect of simplifying and streamlining the structure of the device.

In the present invention, the spiral blade 15 is provided with the hollow portion 14 at the center of rotation of the blade 15. However, the hollow portion 14 is not provided at this center, but the hollow portion 14 is provided at the center of rotation of the blade 15. Instead of providing the shaft 17, the shaft 17 may be continuously arranged along the blade 15 as shown in FIG. 4, and a large number of holes may be formed in the shaft 17 so that hot air is blown into the transport pipe 10 through the holes. ..

[0016]

According to the screw conveyor device as described above, the object to be conveyed is sequentially conveyed while the object to be conveyed is picked up and dropped by the scraping member inside the tube. The transported body is efficiently agitated and mixed as the body is transported, while the transported body that has been scraped up and dropped falls on the drying air when passing through the hollow portion. It will be dried simultaneously with stirring and mixing. That is, according to the screw conveyor device, since it is possible to stir and mix and dry the transported object during the transportation of the transported object, it is not necessary to separately add a device such as a stirring device and a drying device. The effect that the structure of the device can be simplified and rationalized can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing the entire screw conveyor device.

FIG. 2 is a perspective view showing a screw portion of a screw conveyor device.

FIG. 3 is an explanatory diagram for explaining a scraping operation of a transported object by a screw conveyor device.

FIG. 4 is a vertical cross-sectional view showing a conventional screw conveyor device.

[Explanation of symbols]

 10 Transport Pipe 13 Screw 14 Hollow Part 15 Blade 16 Claw (Scraping Member) 18 Drive Device 17 Shaft 17A Shaft Pipe Part (Drying Air Supply Means)

Claims (1)

[Claims] 1. A transport pipe into which a transported body is fed, a screw arranged in the transport pipe for transporting the transported body fed into the transport pipe, and a driving means for rotating the screw. The screw includes a spiral blade provided with a hollow portion along the length direction at the center thereof and rotatably provided around an axis passing through the hollow portion, and the screw provided on the blade. Scrape the transported object in the pipe to the upper position of the transport pipe,
And a scooping member for dropping the scooping member, wherein the transport pipe is provided with a drying air supply unit for supplying drying air for drying the transported object to the hollow portion of the blade. A screw conveyor device.