JPS5812981A - Duster for drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust removal device for discharging to the outside of the machine dust generated during conveyance in a circulation am dryer that dries the circulated and dried material in a conveyance path with hot air.

A circulating type drying machine is known as a type of drying machine used for drying paddy etc.), and the structure and operation of the conventional Hashiha dryer (Ditti is explained using drying of paddy as an example) as follows. In other words, spiral conveyors whose conveying directions are opposite to each other are installed at the top and bottom of the tank for storing paddy, and one end of these is connected to the top and bottom by an elevator installed outside the tank. The nine paddy stored in the tank falls from a hopper installed in the middle part of the tank onto a spiral conveyor at the bottom, is conveyed, is lifted up by an elevator, and is transported by a spiral conveyor at the top. The paddy is transported and circulated through a path in which it falls from the discharge port onto the storage layer.The paddy circulation path from the hochaka to the spiral conveyor at the bottom includes a path from outside the tank to inside the tank. A hot air chamber is provided with burners and suction fans facing each other at both ends.9 When the paddy falls from the hopper,
It is dried by hot air flowing from the burner towards the suction fan. When installing this dryer on-site, due to the layout and the need to install it on the burner side, it is either a cocoon elevator type where the elevator is placed above the burner, or it is placed on the suction fan side. After that, it will be decided at the site whether to use an elevator type.

On the other hand, when drying paddy etc. with this type of dryer, a lot of dust is generated, so it is necessary to discharge it outside the machine (Ih1).When installing this dust removal device, it is necessary to simplify the structure and improve efficiency. In order to achieve good results, it is preferable that the drying suction fan also be used as the dust removal fan. However, as mentioned above, the relative position of the elevator and the suction fan differs depending on the model, so it is necessary to adapt the structure of the dust removal device to this.

The present invention has been made in consideration of the above-mentioned points, and the dust suction port that opens toward the conveyance path of the material to be dried at the bottom of the tank is located close to the elevator that lifts and conveys the material to be dried from the conveyance path. At the same time, a pair of long and short dust exhaust paths are provided to connect the dust suction port and a hot air suction fan that faces the burner and can be selectively exchanged with each other and its position, facing the falling path of the object to be dried O, By selecting one of these depending on the position of the suction fan and configuring it to remove dust, the existing hot air suction fan and the elevator's agitation effect on the dried material can be skillfully used to remove dust. The present invention provides a dryer i dust evacuation device that improves efficiency and makes it easy to change the dust evacuation path in response to changing the position of the suction fan.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

1 to 3 show one embodiment of the dust removal device according to the present invention, FIG. 12 is a partially cutaway front view of a dryer implementing this, FIG. The figure is also an exploded perspective view of the lower half. In these figures, dryer 1
0 main body is removably joined and has an upper part 2 of 9 upper and lower parts,
The inside of the upper part 2 is formed by a middle part 3 and a lower part 4, and the inside of the upper part 2 contains the material to be dried (in this embodiment, the material to be dried is paddy, hereinafter referred to as paddy).

This is a storage chamber 5 that stores . Also, middle section 3
In the upper half, a plurality of hoppers 6 are provided which are shaped like a funnel and allow the paddy stored in the storage chamber 5 to fall from the lower end opening.

Furthermore, in the lower half of the middle section 3, two drying chambers 8, a hot air chamber 9 between them, and air exhaust from both sides are provided by four partition plates connected to the lower end opening of the hopper 6 and suspended from wire mesh Tf:fX. Room 1
0 are separated from each other. Reference numeral 11 denotes a lid for opening and closing the inspection window of the ventilation chamber 10. Further, as shown in FIG. 3, the side plates 12 and 13 at both ends in the longitudinal direction of the middle section 3 are removably provided with respect to the side plates in the width direction and the partition plate covered with the wire mesh 7. A burner 15 that generates hot air and sends it into the hot air chamber 9 is provided in a box 14 attached to the center of the side plate 12. Further, the other drawing board 13 is integrally formed with a wind cylinder 16 that communicates only with the ventilation chambers 10 on both sides and extends over the entire width of the side plate 13, and a box integrally formed in the center thereof has a wind exhaust chamber 16. From room 10 to wind barrel 16
A suction fan 17 that sucks hot air through the burner 15 is provided opposite the burner 15. 18 and 19 are bars that connect and reinforce the wire meshes 7 and the side plates.

Further, in the lower part 4, a conveyance passage 20 having an inverted triangular shape on the surface that communicates with the drying chamber 8 is provided over the entire length of the lower part 4. A pair of rotary valves 21 that regulate the amount of paddy that falls
The drying chamber 8 is connected to the drying chamber 8 by a shaft extending over its entire length.

Further, at the bottom of the conveyance passage 20, a spiral conveyor 22 for conveying the paddy inside the conveyance passage 20 to the side plate 12 side as shown by arrow A in FIG. A blade 24 is installed at the tip of the box to scrape the transported paddy toward the opening of the box 23, which opens toward the back side of the paper in FIG. 1. has been done. Reference numeral 25 designates a square tube-shaped lead-off shaft that communicates with the opening of the box 23, and stands vertically along the side plate 12 at the rear of the box 14 for the burner 15. The section communicates with a rectangular cylindrical conveyance passage 26 extending in the longitudinal direction at the top of the dryer main body. Elevator 2 is equipped with a solid chain in which a large number of packets 27 are arranged at regular intervals in the 112 sending cylinder 25, and lifts and transports the paddy using a bucket 27 that rotates together with the chain.
In addition, a spiral conveyor 29 for conveying paddy in the opposite direction to the spiral conveyor 22 is mounted on a shaft within the conveyance path 26. 30 rotates horizontally,
This is a diffusion plate that spreads the paddy falling from the conveyance path 26 evenly in a circular shape. 9 and 31 are transport casters attached to the bottom plate.

5-゛ On the other hand, a rectangular dust suction port 3°2 is opened in the bottom plate of the hot air chamber 9 in the vicinity of the elevator 28111, and a rectangular cylindrical dust suction tube 33 is conveyed into the dust suction port 32. It hangs down into the passageway 20. Further, on the bottom plate of the hot air l[9, there is a removable dust exhaust passage 35 which is formed in a U-shaped cross section and connects the dust suction port 32 and the nine exhaust tray 34 that is opened at the center of the lower end of the side plate 13. It is freely screwed on. The O dust exhaust path 35 is formed by a short dust exhaust path 35a and a long dust exhaust path 35b connecting the dust suction port 32km and the dust exhaust port 34. As shown in FIG. 3, this dryer 1 is constructed so that the positions of the burner 15 and the suction fan 1T can be changed by attaching and detaching the side plates 12 and 13 of the middle section 3 and changing their positions. ing.

Figure 4 shows the burner 5 and suction fan 17 in Figure 1.
FIG. 4 is a partially cutaway front view showing the state after exchanging the positions with the elevator 28, corresponding to FIG. It is on the same side. In this case, the position of the dust suction port 32 is the same as in the case of FIG.
A is joined to the dust exhaust port 34 whose position has been changed by being reversed.

The operation of the dryer 1 configured as above will be explained. When the paddy from which moisture has been drained is put into the storage W chamber 5 and the hopper 6 and the prime mover is started to burn the burner 5, the rotary pulp 21 rotates and the paddy is transferred from the lower end opening of the hopper 6 to the drying chamber. 8 through 9, rotary pad, 1.
11' While the amount is regulated by the lubricant 21, an appropriate amount falls onto the conveyance path 20. Then, on the spiral conveyor 22
□ It is transported in the direction of the arrow, and is pulled up inside the box 23 by the blade 24 at the end of the transport toward the elevator 28t411. As the packet 27 of the elevator 28 comes around, the paddy is scooped up by the packet 27, lifted up and conveyed as the chain runs, and then taken over and conveyed by the spiral conveyor 29. The transported paddy falls from the opening of the transport path 26 onto the rotating diffusion plate 30, is evenly distributed in a circular shape to the upper layer of paddy in the storage chamber 5, and is then circulated by repeating the above operation. .

On the other hand, the hot air sent into the hot air chamber 9 by the burner 15 passes through the wire mesh 7 into the exhaust chambers 10 on both sides due to the suction force of the suction fan 17, flows in the longitudinal direction, and enters the wind barrel 16. It is ejected from the aircraft.

In this way, the hot air passes through the drying chamber 8, which is the path through which the paddy falls, so that the paddy is completely dried by the hot air while the circulation is repeated.

A lot of dust is generated when paddy is dried in this way, and this dust is removed by the hot air suction fan 17 into the conveyance path 20.
The dust is sucked through the dust suction pipe 33 that opens into the air, enters the wind cylinder 16 through the dust suction port 32, the dust exhaust path 35, and the dust exhaust port 34, and is then discharged out of the machine together with hot air. In this case, the hot air suction fan 17 is also used as the dust removal fan, so
It is efficient and has a structure that is easy to use, and the dust suction cylinder 3.
3 is disposed close to the elevator 28, the dust thrown up by the stirring of the paddy by the packet 27 and the blade i24 is easily absorbed into the dust i! 1133, the evacuation r1 efficiency is extremely high.

When this dryer 1 is installed on site,
The elevator is transported divided into three stages, upper and lower, and assembled on site, and at this time it is determined whether the elevator will be the front elevator or the rear elevator, as described above, depending on the layout and the position of the operating section. This determines the position of the burner 15 and the suction fan 17, and the side plates 12.13 are joined accordingly with the longitudinal side plates and the partition plate covered with wire mesh T. At the same time, the dust exhaust path 35 is selected depending on the position of the suction fan 17, and as shown in FIG.
When on the opposite side to 8, both long and short dust exhaust paths 35
a and 35b are joined and attached to the bottom plate of the hot air chamber 9. In addition, as shown in FIG. 4, the suction fan 17 is
When it is on the side, only the short dust exhaust path 35a is reversed and installed. In this way, the dust exhaust path can be made compatible with the change in the position of the suction fan 17, and even if the dust exhaust path is changed, the dust suction pipe 33 is always close to the elevator 28, so the dust exhaust efficiency is improved. Always in very good condition.

In addition, in this embodiment, when the dust exhaust path 35 is lengthened,
Although an example is shown in which two long and short dust exhaust paths 35a and 35b are joined together, one dust exhaust path having the same length as the two dust exhaust paths 35m and 35b joined together may be prepared and used.

As is clear from the above description, according to the present invention, the conveyance passages provided above and below the tank are connected by an elevator outside the tank to circulate the dried material, and the falling path is □ from outside the tank. Opposing burner and suction fan, ・1′, ・:,.

In a dryer that is equipped with an elevator to dry falling objects to be dried, a dust suction port that opens toward the conveyance path at the bottom of the tank is located close to the elevator, and this dust suction port and drying suction The fan is connected with a dust exhaust path to remove dust from the tank, and a pair of long and short dust exhaust paths are provided so that one of these can be selected depending on the position of the suction fan. As a result, the existing drying suction fan can also be used as a dust suction fan, resulting in good efficiency and a simple structure, and by placing the dust suction port close to the elevator, it is possible to reduce the amount of drying at the connection between the conveyance path and the elevator. Since the dust thrown up by the stirring of the material can be easily sucked up, the dust removal efficiency is extremely high. In addition, it is possible to change the position of the suction fan by selecting and installing one of a pair of long and short dust exhaust paths, which is extremely simple. Easier to use.

[Brief explanation of the drawing]

Figures 1 to 4 show the exhaust of the dryer according to the present invention.
ljl')Ill,:1.1 An example of a dust device is shown in Figure 1.
1. . Figure 2 is a partially cutaway front view of the dryer, and Figure 2 is a side sectional view.
FIG. 3 is an exploded perspective view of the lower half, and FIG. 4 is a partially cutaway front view of the dryer, corresponding to FIG. 1, in which the suction fan is placed on the same side as the elevator. 1... Dryer, 8... Drying chamber, 15... Burner, 17... Suction fan, 20-... Conveyance path, 2B... Conveyance path, 28... ...Elevator, 3
2...Dust suction port, 35° 35a, 35b...Dust exhaust path. Patent applicant: Iseki Agricultural Machinery Co., Ltd. Agent: Masaki Yamakawa (and one other person) Figure 1

Claims (1)

[Claims] An elevator connects the transport passages for the dried material arranged above and below the tank outside the tank and lifts and transports the dried material, and an elevator connects the transport passages for the dried material arranged above and below the tank, and an elevator is provided from outside the tank toward the fall path of the dried material to the lower transport passage. In a dryer equipped with a burner and a suction fan that face each other and whose positions can be selectively exchanged, a dust suction port opening toward the lower conveyance passage is disposed close to the elevator, and the dust suction A dust evacuation device for a dryer, characterized in that a pair of long and short dust evacuation paths that can be selectively connected between the mouth and the suction fan on either side are detachably provided.