JPH0949686A - Dust removal apparatus in circulating grain drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectually suck and remove dust flying around a suction inlet by disposing a dust suction box and providing a hole gap in a machine wall, and connecting a suction cylinder part of a dust suction/removal blower mounted on a machine body with the dust suction box through a dust suction pipe. SOLUTION: There is kept at negative pressure the inside of a dust suction box 6 disposed at a location of a conveyor 15 on a final end side or a start end side in the conveyance direction of the conveyor 15 on the side of a falling flow passage (y) where grains fall from a rotary shutter 14 onto the lower conveyor 15 with the aid of suction pressure of a dust suction/removal blower 5 mounted on a machine body 1. There are sucked into the dust suction box 6 dust separated from grains discharged from the rotary shutter 14 and flowing down along the falling flow passage (y) and dust separated from grains carried on the conveyor 15 through innumerable hole gaps provided in a machine wall facing the falling flow passage (y) of the dust suction box 6. The dust is removed to the outside of a working house with the dust suction/removal blower 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention discharges a grain stuck in a storage portion of the grain inside the fuselage to the outside of the fuselage through a drying section below the storage portion by a conveyor at the bottom of the fuselage. , A circulation type in which the grains are circulated by being lifted up and down by an elevator installed on the outer surface of the machine and returned to the storage section in the machine again, and the dry air generated by the hot air generator in the drying section is applied to this grain. In the grain dryer of (1), the present invention relates to an improvement of a dust removing device that sucks and removes dust that is separated from flowing grains and scattered on four sides.

[0002]

2. Description of the Related Art A circulating-type grain dryer A puts grains fed by an elevator into a storage section in a fuselage using an operation in which a bucket of a bucket conveyor of the elevator releases the grains. A specific description will be given of the loose-type circulation type grain dryer A, as shown in FIGS. 1 to 4, in the upper half side of the rectangular box-shaped machine body 1, the machine body 1 A storage part "a" into which grain is stretched is formed by four machine walls, and a hot air guide path 11 and a grain flow path 12 partitioned by a breathable partition wall 10 are provided on the lower half side of the machine body 1. The wind guide passage 1 is provided on both sides of the grain flow-down passage 12 and the air discharge passage 13 that guides the exhaust air blown out from the wind guide passage 11 and passed through the grain flow-down passage 12.
1 and the exhaust path 13 are arranged in parallel so that the drying section b is formed and below the drying section b, the grain is regulated to a predetermined flow rate from the lower end of the grain flow path 12 and discharged. A rotary shutter 14 is provided, and at the bottom of the inner cavity of the machine body 1 located below the rotary shutter 14, a carry-out conveyor 15 for carrying out the grains fed from the rotary shutter 14 to the outside of the machine body 1 is provided. The terminal side in the carry-out direction is connected to and communicates with the bottom of the grain-lifting tower 20 of the elevator 2 which is erected on the front side of the machine body 1. The wind guide path 11 has the front surface of the machine body 1 as shown in FIG. Of the hot air generator 3 including the burner device 30 installed on the side of the hot air generator 31 is connected to and communicates with the hot air outlet 31 via the duct 16, and the exhaust path 13 is mounted on the machine wall 1b on the rear surface side of the machine body 1. Elevator 2 which connects the suction ports 40 of 4 and communicates with each other, and stands on the front side of the machine body 1.
Is a bucket conveyor 2 that can be stored in its fried tower 20.
The bucket 210 of No. 1 is arranged such that the descending stroke side faces the machine wall 1a on the front side of the machine body 1, and
The discharge port 22 at the upper end of the machine wall 1 on the front side of the machine body 1
It is configured by connecting to a receiving port 17 opened at the upper end of a through a connecting gutter 23.

As a result, while the operation of the rotary shutter 14 is stopped, the grain is charged from the tension hopper 18 which is provided at the lower part of the side surface of the machine body 1 so as to be openable and closable,
By operating the carry-out conveyor 15 and the elevator 2, a predetermined amount of grain is stretched in the storage portion a in the machine body 1, and from this state, the rotary shutter 14, the carry-out conveyor 15 and the elevator 2 are operated to store the inside of the storage portion a. By circulating and flowing the grains, and at the same time, operating the hot air generating device 3 and the air exhauster 4 to apply hot air (dry air) to the circulating and flowing grains in the grain flow path 12 of the drying section b. , The grains are allowed to dry.

However, in the circulation type grain drying apparatus, by circulating and flowing the grains, a large amount of dust dispersed in the grains is separated from the grains and floats in the air. Therefore, a large amount of dust is generated in the grain circulation channel and the grain storage portion a.

Therefore, the circulation type grain dryer is usually
Suction of dust suction blower mounted on the outer surface of the machine body 1 at the lower end of the lifting tower 20 of the elevator 2 at the connection site with the carry-out conveyor 15 or at the connection site with the stake conveyor at the top of the lifting tower 20. By connecting the mouth, the dust particles in the circulated grain are separated and removed.

[0006]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention A dust removing device in a circulation type grain dryer is a suction dust removing blower for sucking and removing dust that separates from flowing grains and scatters on four rounds and becomes floating. However, there is a problem in that the work environment around the grain dryer is impaired by being installed on the outer surface of the lifting column of the elevator or the outer surface of the machine body.

Prior to the drying operation of the grain, in order to load the grain to be dried into the storage portion a in the machine body 1, the tensioning hopper 18 provided on the side surface of the machine body 1 is opened, and Therefore, even when the suction dust blower is operated when the grains are charged toward the conveyor 15 at the bottom of the machine body 1, the suction pressure acting on the upper part or the lower part of the lifting tower 20 of the elevator 2 is increased. Due to the shortage, it is not possible to effectively suck and remove the dust that floats around the sloping hopper 18 that separates and opens from the grain that is poured into the machine body 1, and the dust can enter this grain loading operation. There is a problem that has to be done inside.

The present invention is intended to solve the above-mentioned problems that occur in the conventional circulation type grain dryer, and to remove the dust which is separated from the flowing grain and scattered and scattered in four rounds. The suction and dust blower to remove the suction
The dead space in the inside of the machine 1 can be effectively used so that the dead pacing can be installed and installed on the outer surface of the machine body 1 without protruding. A new means is provided for effectively sucking and removing the dust that rises around the stake port w that is opened by the opening operation of the stake hopper 18 during the stake-in work that is poured into the conveyor 15. The purpose is to provide.

[0009]

In the present invention, as means for achieving the above-mentioned object, the rotary shutter 14 of the drying section b in the machine body 1 and the conveyor 15 for discharging grain at the bottom are provided. At the side of the fall path y of the grain between
At least one of the parts corresponding to the inside of the sleeve walls 19 ...
A dust collection box 6 is provided at a location, and a myriad of holes 64 for dust collection are formed in at least the machine wall 60 facing the drop passage y.
The dust collecting box 6 is provided with the suction cylinder part 50 of the suction dust collecting blower 5 mounted on the machine body 1 and connected through the dust collecting pipe 7 to the dust collecting device in the circulation type grain dryer. It is something to raise.

[0010]

The dust removing device in the circulation type grain dryer according to the present invention configured as described above is provided with the conveyor at the side of the drop passage y where the grains fall from the rotary shutter 14 to the conveyor 15 therebelow. The inside of the dust collection box 6 disposed at the end side or the start end side of the conveyance direction of 15 is held at a negative pressure by the suction pressure of the suction dust discharge blower 5 mounted on the machine body 1,
Innumerable holes 64 provided in the machine wall 60 facing the drop flow path y of the dust collection box 6 are separated from the grains discharged from the rotary shutter 14 and flowing down the drop flow path y, and the conveyor. Dust separated from the grains conveyed by 15 is sucked into the dust collection box 6, and is sucked out of the work building by the suction dust blower 5.

Then, at the side of the falling flow path y in which the dust collection box 6 is disposed and at the end side or the start side in the carrying direction of the conveyor 15, the tension hoppers 18 can be freely opened and closed on the left and right side surfaces of the machine body 1. It is a part located inside the sleeve walls 19 provided before and after the extension hopper 18 in order to provide the same. Since it is a dead space that does not flow in, the dust suction box 6 can be assembled by utilizing the dead space in the machine body 1 without protruding to the outer surface of the machine body 1.

Then, the dust collection box 6 is used as the squeeze hopper 1.
Sleeve wall 19 before and after the opening w that is opened by the opening operation of 8.
-Since it is located inside 19, when the suction and dust blower 5 is actuated to keep the inside at a negative pressure, it sucks the air around the suction port w, A flow of air sucked inside the machine body 1 is created around the mouth w, and the grain is fed from the inlet w to the conveyor 15 at the bottom of the machine body 1.
Dust that will rise when pouring toward
As a result of suctioning into the machine body 1, it becomes possible to maintain a good working environment around the loading port w when the grain is loaded.

[0013]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 5 is a partially broken perspective view of a circulation type grain dryer A for carrying out the means of the present invention. In FIG. 5, 1 is a box-shaped machine body and 2 is a front side of the machine body 1. Elevator standing on the front of the machine wall 1a, a is a storage part installed in the machine body 1, b is a drying part installed below the storage part a, 14 is a rotary shutter, and 15 is a conveyor for discharging grain. , 151 is a grain flow board connected to the left and right side edges of the transport gutter 150 of the conveyor 15, 6 is a dust collecting box, and 5 is a suction and dust blower.

The machine body 1 has the same structure as the conventional loose-type circulating grain dryer A. The upper half side of the machine body 1 is filled with the grains to be dried and stored. Part a is formed, and on the lower half side, as shown in FIGS. 6 and 7,
Hot air duct 11 partitioned by breathable partition walls 10 ...
11 is provided with a drying section b which is configured by arranging the grain flow-down passages 12 and 12 and the exhaust air passages 13 and 13 in parallel.

A rotary shutter 14 is mounted on the lower ends of the grain flow-down paths 12 and 12, and a carry-out conveyor 15 is installed below the rotary shutter 14. The extension hopper 18 is installed so as to be openable and closable.

The elevator 2 is an ordinary one in which a bucket conveyor 21 is housed in the grain elevator 20, and the descending stroke side of the bucket conveyor 21 is the machine wall 1a on the front side of the machine body 1.
The discharge port 22 opened at the upper end of the fried tower 20 is connected to the receiving port 17 opened at the upper part of the machine wall 1a on the front side of the machine body 1 through the connection gutter 23. hand,
The grains to be pumped are thrown directly into the storage section a in the machine body 1 and are put therein.

The hot air generator 3 is a normal one using the burner device 30, and its air outlet 31 is located in front of the airframe 1 with respect to the hot air guide passages 11 of the drying section b in the airframe 1. It is connected via a duct 16 provided on the front surface of the side machine wall 1a.

On the outer surface side of the machine wall 1b on the rear surface side of the machine body 1, an exhaust fan 4 having an intake port 40 connected to and communicating with the exhaust path 13 of the drying section b is installed and supported.

The tension hopper 18 is a part of the left and right machine walls 1c, 1c of the machine body 1, which is located below the machine wall 1c.
The front and rear widths are formed long so as to open and close between the sleeve walls 19 and 19 in a range where the narrow width sleeve walls 19 and 19 are left at the front and rear ends of 1c. When the opening operation is performed, a squeeze port w having a width extending substantially forward and backward on the side surface of the machine body 1 is opened between the front and rear sleeve walls 19.

As shown in FIG. 9, the dust-collecting box 5 is formed in a duct shape which is a substantially rectangular prismatic shape and vertically extends out of the four machine walls 60, 61, 62, 63. , A drop path y of the grain between the rotary shutter 14 and the conveyor 15
The machine wall 60 on the side facing to is formed as a perforated plate having a large number of pores 64 ....

The dust collection box 6 conveys, at the bottom of the machine body 1, the grains fed from the above-mentioned loading port w to the conveyor 15.
Of the partition wall 10 for partitioning the upper surface of the grain flow board 151 provided so as to be guided into the transport gutter 150 of the above, and the grain flow path 12 and the hot air guide path 11 located above the grain flow board 151. Between the lower surface and the above-mentioned front and rear sleeve walls 19 and 19, it is arranged at a portion located inside the front sleeve wall 19, and the opening on the upper surface side of the sleeve wall 19 is formed in the partition wall 10. By joining and closing the lower surface and joining and closing the opening on the lower surface side to the upper surface of the grain sink plate 151, the inner cavity forms the dust collecting chamber z.

Further, a communication port 65 is provided in the grain sink plate 151 corresponding to the opening on the lower surface side of the dust collection box 6, and the communication port 65 is arranged below the grain flow plate 151. By connecting and communicating with the suction cylinder portion 50 of the suction / dust suction blower 5 mounted and supported on the bottom of the machine body 1 via the dust suction pipe 7, the suction dust suction blower 5 operates to move the inside of the dust suction chamber z. While being kept at a negative pressure, dust separated from the grains falling in the drop passage y is sucked from the pores 64 provided in the machine wall 60 facing the grain drop passage y. is there.

In the illustrated embodiment, the dust collection boxes 6 are arranged symmetrically in a pair on the left and right sides of the grain dropping flow path y. It may be installed only on the side. Further, in the case where the grains are arranged on both sides of the falling channel y so as to be symmetrical to each other, the suction / dust blower 5 connected to the grain branches the dust suction pipe 7 communicating with the suction cylinder portion 50 thereof. Each dust collection box 6, 6 through a pipe
The suction / dust blower 5 may be commonly used.

Further, the dust collection box 6 is installed in a portion located inside the sleeve wall 19 on the rear end side of the machine body 1 as a structure similar to the case where it is arranged inside the front sleeve wall 19 described above. If you do
Further, it may be installed both on the inside of the front sleeve wall 19 and on the inside of the rear sleeve wall 19.

As shown in FIG. 10, the suction / dust blower 5 for communicating the suction cylinder portion 50 with the dust collection box 6 has a disk-shaped casing 5a, and a rotary shaft arranged at its axial center portion. The rotary blade 5b which rotates by means of the storage shaft is installed, and its rotary shaft is conducted to the output shaft of the motor M mounted on the outer surface of one side surface of the casing 5a, and is transferred to the shaft center portion of the other side surface of the casing 5a. This is a normal suction blower in which the suction cylinder portion 50 is provided and the discharge cylinder portion 51 is provided on the peripheral portion of the casing 5a.

The suction and dust blower 5 is mounted on a mounting seat 52 formed in the shape of a shaft cylinder so that the casing 5a can freely swivel around the suction cylinder portion 50, and the mounting seat 52 is mounted. Is fixed to the machine body 1 by being arranged below the grain flow board 151 and supported by the mounting base 53 assembled to the machine body 1. Further, on the outer end side of the above-mentioned shaft-cylindrical assembly seat 52, the connection cylinder portion 54 communicating with the suction cylinder portion 50 is also provided.
Is provided and the base end side of the dust suction pipe 7 is connected to this, and the pipe 7 is provided with the communication port 65 provided on the grain flow board 151.
The air in the dust collection box 6 is sucked by connecting to the.

When the suction and dust blower 5 is mounted on the outer surface of the machine body 1 by utilizing the space below the duct 16 on the outer surface of the machine wall 1a on the front side of the machine body 1 which is a dead space. There is also. In this case, the communication port 65 is opened on the front wall 62 of the dust collection box 6, and the machine wall 1a on the front side of the machine body 1 is opened.
Also, the communication port 65 of the dust collection box 6 and the suction cylinder part 50 of the suction / exhaust dust blower 5 can be communicated with each other.

Further, in the embodiment means shown in the figure, 8 is a machine wall 61 on the inner end side of the dust collection box 6 in order to prevent the grains fed from the overhanging port w from flowing into the back side of the dust collection box 6. And a side wall of the machine body 1 between the machine wall 1c and a partition wall, and 9 is a dust pipe connected to the discharge cylinder portion 51 of the suction dust discharge blower 5.

[0030]

As described above, the dust removing device in the circulation type grain dryer according to the present invention includes the dust collecting box 6 for sucking and removing the dust separated from the flowing grain.
At the side of the grain drop path y where the grains fall from the rotary shutter 14 located at the lower end of the grain flow down path 12 of the drying section b toward the conveyer 15 for discharging the grain therebelow, the machine body 1 It is arranged by utilizing the portion corresponding to the inner side of the sleeve wall 19, 19 of the stake port w on the side surface of the suction port, and the suction and dust blower 5 is connected to this through the dust suction pipe 7 so that it flows. It is possible to efficiently suck and remove the dust separated from the grain and scattered on the four circumferences. In addition, the dead space inside and around the machine body 1 can be effectively utilized without causing the suction and dust discharge blower 5 that holds the dust collection box 6 and the dust collection chamber z therein to be negative pressure. And will be assembled. Moreover, when the dust collection box 6 releases the sticking port w and pours the grain to be dried toward the conveyor 15 for discharging the grain at the bottom of the machine body 1, the dust collecting box 6 separates the grain from the grain and feeds it. Mouth w
The dust that floats up around the suction port is sucked into the machine body 1 from the periphery of the suction port w and is removed to the outside of the work building by the suction dust blower 5. Maintains a good working environment in the surrounding area.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional circulation type grain dryer.

FIG. 2 is a partially broken side view of the grain dryer.

FIG. 3 is a vertical sectional front view of the grain dryer.

FIG. 4 is a cross-sectional plan view of the same grain dryer.

FIG. 5 is a partially cutaway perspective view of a circulation type grain dryer according to the present invention.

FIG. 6 is a partially cutaway side view of the same grain dryer.

FIG. 7 is a vertical sectional front view of the same grain dryer.

FIG. 8 is a cross-sectional plan view of the same grain dryer.

FIG. 9 is a perspective view of a main part of the same grain dryer.

FIG. 10 is a vertical sectional front view of a main part of the same.

[Explanation of symbols]

A ... Grain dryer, a ... Storage section, b ... Drying section, w ... Tightening port, y ... Fall channel, z ... Dust collection chamber, M ... Motor, 1 ... Machine, 1a, 1b, 1c ... Machine wall DESCRIPTION OF SYMBOLS 10 ... Partition wall, 11 ... Wind guide path, 12 ... Downflow path, 13 ... Exhaust path, 14 ... Rotating shutter, 15 ... Outgoing conveyor, 150 ... Conveyor gutter, 151 ... Grain flow board, 16 ... Duct, 17 ... Inlet, 18 ... Saddle hopper, 19 ... Sleeve wall, 2 ... Elevator, 20 ... Grain tower, 21
... Bucket conveyor, 210 ... Bucket, 22 ... Discharge port, 23 ... Connection gutter, 3 ... Hot air generating device, 30 ... Burner device, 31 ... Exhaust port, 4 ... Exhaust device, 40 ... Suction port, 5 ...
Suction and dust blower, 5a ... Casing, 5b ... Rotor blade,
50 ... Suction cylinder part, 51 ... Discharge cylinder part, 52 ... Assembly seat, 53
... Mounting stand, 54 ... Connecting cylinder part, 6 ... Dust collection box, 60.61.
62/63 ... Machine wall, 64 ... Pore, 65 ... Communication port, 7 ... Dust suction pipe, 8 ... Partition wall, 9 ... Dust exhaust pipe.

Claims (1)

[Claims] 1. A rotary shutter 14 of a drying section b in the machine body 1.
The sleeve walls 19 located on the side of the grain falling flow path y between the bottom and the bottom grain discharging conveyor 15 and before and after the extension port w to be opened in the machine wall 1c on the side surface of the machine body 1 ... At least one of the parts corresponding to the inner side of the dust collecting box 6 is disposed, and at least the machine wall 60 facing the drop flow path y is provided with innumerable pores 64 for absorbing dust, and the dust collecting box 6 is provided. A dust removing device for a circulation type grain dryer, in which a suction cylinder portion 50 of a suction dust removing blower 5 mounted on the machine body 1 is connected to the box 6 via a dust suction pipe 7.