JPH11192016A - Dust-collecting equipment in facility for grain drying preparation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust-collecting equipment simplified in constitution, reducible in investment cost and also improved in drying and operating efficiency, by connecting a dust-collecting port to the respective suction sides of suction discharge fans via a dust-collecting duct. SOLUTION: This dust-collecting equipment is so designed that a receiving hopper 2 is provided with a dust-collecting port 2C for collecting dust produced in the hopper 2C, and the port 2C is connected to the respective suction sides of suction discharge fans 22A, 22B having dust discharge ducts 26A, 26B on the discharge side, respectively, via a dust-collecting duct 24 provided with openable valves 30A, 30B; wherein it is preferable that the discharge side of the suction discharge fans 22A, 22B is connected, via the dust discharge ducts 26A, 26B, to a dust treatment apparatus 27 for recovering and treating dust produced in the subject facility.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting facility in a receiving facility of a joint drying and preparing facility.

[0002]

2. Description of the Related Art Conventionally, this type of co-drying preparation facility has been provided with processes such as receiving, roughing, drying, hulling / selection, and shipping.
For example, raw rice is preliminarily dried and stored, and after the completion of the harvesting period, the stored raw rice is subjected to finish drying, hulling / selection, and then shipped as brown rice.

[0003] In the co-drying preparation facility, the receiving step 110, the roughing step 120, the drying step 130,
In order to remove dust generated in each step such as the fine selection step 140, a dust collecting facility 170 including a dust collecting duct 160 provided with a suction / discharge fan 150 in the middle is provided. The dust collecting equipment 170 includes the receiving step 110, the roughing step 120, the drying step 130, and the hulling / selecting step 14.
0 (the suction / discharge fan 150 is not provided in the dust collecting facility 170 connected to the drying step 130).
One end of the dust collection duct 160 is connected to each step, and dust is collected by the suction force of the suction and discharge fan 150. The other end of the dust collection duct 160 is connected to a dust treatment device (such as a wet dust collector) 180 provided in the co-drying preparation facility, and the dust is collected by the dust treatment device 180 (see FIG. 5). .

[0004]

SUMMARY OF THE INVENTION The present inventor has made it a technical object to simplify the dust collecting facility provided in the co-drying preparation facility and reduce the facility cost.

[0005]

According to the present invention, in order to solve the above-mentioned problems, an invention according to claim 1 of the present application (hereinafter, referred to as a "first invention") is provided in the receiving hopper. The technical means is that a dust collecting port for collecting dust to be collected is provided, and the dust collecting port and the suction side of the suction / discharge fan are connected by a dust collecting duct. Therefore, the first invention has the following operation. The dust generated in the receiving hopper is once taken into the suction / discharge fan via the dust collection duct by the suction force of the suction / discharge fan of the drying unit, and then discharged to the dust discharge duct.

The invention according to claim 2 of the present application (hereinafter referred to as “second
In addition to the first aspect, the invention has a technical means that an on-off valve is provided in the dust collection duct. Therefore, the second invention has the following operation in addition to the operation of the first invention. The on-off valve can open and close a flow path in the dust collection duct.

The invention according to claim 3 of the present application (hereinafter referred to as “third
Invention ") is the first invention and the second invention,
A plurality of the drying equipment is provided, and the dust collection duct is connected to each suction / discharge fan and provided with an opening / closing valve, and a detection unit for detecting an amount of grain stuck in the storage unit is provided, and the detection unit and A technical means is provided in which a control means for connecting to the on-off valve, each suction / discharge fan and the transfer means is provided. Therefore, in the third invention, the control means controls the switching of the transport means so as to stick the grain into the storage part of another drying facility based on the signal of the detection means, and controls the on-off valve. Switching control is performed in correspondence with the opening and closing of the valve and the operation of the suction / discharge fan.

The invention according to claim 4 of the present application (hereinafter referred to as “fourth
In addition to the first to third aspects of the present invention, the discharge side of the suction discharge fan is connected to a dust treatment device that collects and treats dust generated in the grain drying preparation facility by a dust discharge duct. The technical means of taking. Therefore, the fourth invention has the following operation. Dust generated in the receiving hopper 2 is sent to a dust processing device via a suction / discharge fan and a dust discharge duct of the drying unit, and is processed.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG.

In the building 1, a load receiving hopper 2 is buried on the floor. The receiving hopper 2 includes a pit 2e buried under the floor, and a lattice portion 2a formed in a lattice at an opening of the pit 2e.
And a wall 2b erected around the lattice 2a. A roughing device 3 is provided near the receiving hopper 2, and the lower part of the pit 2 e and the roughing device 3 are connected by a graining machine 4. In addition, a hulling (fine milling) / selection device 5 and a refined product tank 6 are arranged adjacent to the rough selection device 3.

A silo group is provided on one side of the building 1 adjacent to the building 1. The silos are provided with silos 7A to 7F and silos 8A and 8B, and the silos 7A to 7C and silos 7D to 7F are arranged in two rows and a silo 8A is silos 7A. , 7B,
Surrounded by 7D and 7E, the same silo 8B is used for the interval silo 8B.
B, 7C, 7E, 7F.

On the roof of the silo group, a belt conveyor 9 for charging is connected to all of the main silos 7A to 7F and the padding portions of the silos 8A and 8B. The charging belt conveyor 9 is in communication with a silo graining machine 10 erected between the building 1 and the silo group. The silo fryer 1
Numeral 0 communicates with the roughing device 3 by a horizontal conveyor (not shown), and transports the paddy discharged from the roughing device 3 to the charging belt conveyor 9 provided on the roof of the silo group.

On the other hand, a scar provided below the silo group is provided.
The take-out belt conveyors 11A to 11D that communicate with the discharge units provided below each of the silos are laterally provided in the inside of the belt unit. The take-out belt conveyors denoted by reference numerals 11B to 11C communicate with the take-out belt conveyors denoted by reference numeral 11A. The take-out belt conveyor 11 </ b> A extends to the inside of the building 1, and communicates with a fryer 12 provided in the building 1. The discharge side of the graining machine 12 is branched, and communicates with the silo graining machine 10 and the hulling / selection device 5.

Next, the interval silos 8A and 8B (drying equipment) will be described. Since each of the interval silos 8A and 8B has the same configuration, only one interval silo 8A will be described. The interval silo 8A constitutes a drying unit 17A (drying step) at the lower part and a storage part 18A at the upper part. A full sensor (not shown) is provided above the inside of the storage section 18A, and the full sensor is connected to a control means 31 described later. The drying section 17A includes a hot air generator 21A, a blower drum 15A, a drying room 170A, an air discharge drum 16A, and a suction / discharge fan 22A. A space is formed between the peripheral wall 8a forming the outer periphery of the interval silo 8A and the drying chamber 170A in the shape of a square tube, and one of the spaces is used as a blower drum 15A and a space opposed to the blower drum 15A. Is formed on the exhaust drum 16A. A hot air generator 21A that generates hot air and blows hot air to the blower drum 15A is provided below the blower drum 15A, and hot air is sucked below the exhaust silencer 8A to the outside of the interval silo 8A below the exhaust blower 16A. A suction / discharge fan 22A for discharging is provided (see FIG. 4).

The paddy input section above the storage section 18A and the discharge section 19A provided below the drying section 17A are connected by a graining machine 20A adjacent to the silo 8A. The discharge side of the grain raising machine 20A is branched, and one of the branches is stored in the storage unit 1A.
8A, and the other is connected to the charging belt conveyor 9.

Next, the dust collecting facility will be described with reference to FIGS. Dust collection ducts 23 and 25 for collecting dust are connected to the roughing device 3 (roughing process) and the hulling / cleaning device 5 (hulling / cleaning process) in the building 1, respectively. . The other end of each of the dust collection ducts 23 and 25 is provided with a dust treatment device 2 provided adjacent to the silo group for collecting dust.
7 is connected. In the middle of the dust collection ducts 23 and 25,
Suction discharge fans 28 and 29 for sucking dust and discharging the dust to the dust treatment device 27 are provided.

Further, the receiving hopper 2 (receiving step).
The wall 2b is provided with a dust collection port 2c for taking in dust,
Also, a grid-like net (not shown) is attached to the dust collection port 2c. A dust collection duct 24 that sucks dust is connected to the dust collection port 2c. The dust collection duct 24 is divided into two branch ducts 24A and 24B in the middle.
Each of the branch ducts 24A, 24B is connected to suction / discharge fans 22A, 22B provided in the drying sections 17A, 17B of the silos 8A, 8B. Each of the branch ducts 24A and 24B is provided with the branch duct 24.
Opening / closing valves 30A and 30B for opening and closing the flow paths in A and 24B are provided. Dust ducts 26A and 26B are connected to the suction / discharge fans 22A and 22B, respectively.
6A and 26B are connected to the dust treatment device 27.

In the vicinity of the load receiving hopper 2, there is provided a switch 2d which is pressed when starting the load receiving. And
A control device 31 is connected to the switch 2d, the open / close valves 30A and 30B, the suction / discharge fans 22A and 22B, and the charging belt conveyor 9.

Next, the operation of the embodiment of the present invention will be described.

First, it is confirmed that there is no grain in the interval silo into which the harvested raw material grains, for example, raw rice, is charged (in this description, it is assumed that both the interval silos 8A and 8B contain no raw rice). explain.). Then, the switch 2d provided near the load receiving hopper 2 is pressed.

The control means 31 controls the on-off valve 30A of the branch duct 24A based on the signal from the switch 2d.
Is opened, and the suction / discharge fan 22A of the interval silo 8A is operated. At this time, the branch duct 24
The valve of the on-off valve 30B of B is closed, and the suction / discharge fan 22B of the interval silo 8B is stopped.

A truck on which a large amount of raw rice is loaded on the loading platform is placed side by side on the receiving hopper 2, and the raw rice loaded on the loading platform is simultaneously transferred to the grid portion 2 a of the receiving hopper 2. At this time, dust is generated in the receiving hopper 2. The raw rice transferred to the lattice portion 2a of the receiving hopper 2 is sent to the roughing device 3 via the pit 2e and the graining machine 4, and is roughly sorted and weighed, and then the silo graining machine. 10 and a storage unit 1 of a silo 8A via an input belt conveyor 9
It is thrown into (attached to) 8A.

In the interval silo (drying equipment), a suction discharge fan is provided to prevent dust from flying in the drying section and accumulating on the hot air generator when the raw rice is stuck in the storage section. It is necessary to operate and collect dust.

The dust generated in the receiving hopper-2 is
The air is once taken into the suction / discharge fan 22A from the dust collection port 2c through the dust collection duct 24 and the branch duct 24A by the suction force of the suction / discharge fan 22A, and then discharged to the dust discharge duct 26A. And it is sent to the said dust processing apparatus 27 (refer FIG. 4).

When the raw rice reaches the storage section 18A of the interval silo 8A to the full capacity, the full sensor (not shown) senses and sends a signal to the control means 31. The control means 31 sends a signal to the feeding belt conveyor 9 to switch the filling of the raw rice from the interval silo 8A to the interval silo 8B. At the same time, the control means 31 simultaneously stops the suction / discharge fan 22A of the interval silo 8A, closes the valve of the on-off valve 30A, activates the suction / discharge fan 22B of the interval silo 8B, and opens and closes the on-off valve 30B.
Open the valve.

As a result, the dust generated when the raw rice is continuously transferred by the receiving hopper 2 is temporarily transferred to the suction / discharge fan 22B via the dust collection duct 24 and the branch duct 24B by the suction force of the suction / discharge fan 22B. After being taken in, it is discharged to the dust discharge duct 26B. And it is sent to the said dust processing apparatus 27. When the raw rice is filled to the storage section 18B of the interval silo 8B to the full amount, the storage section 18B
A full sensor (not shown) provided therein senses and sends a signal to the control means 31. In the control means 31, a lamp (not shown) for notifying that the storage units 18A and 18B are full is turned on based on a signal from the full sensor. When this lamp is turned on, the transfer of the raw rice to the receiving hopper-2 is stopped. The control means 31 closes the valve of the on-off valve 30B,
B is stopped, and the charging belt conveyor 9 is stopped from sticking the raw rice into the storage unit 18.

In each of the interval silos 8A and 8B, when the filling of the raw rice is completed, the suction / discharge fan 22
A, 22B and the hot air generators 21A, 21B are operated to start drying. At this time, the branch duct 24A,
Since the on-off valves 30A and 30B provided in 24B both close the valves, the dust collection duct 24 and the branch ducts 24A and 24B are closed.
To prevent the air on the side of the load receiving hopper 2 from being sucked (see FIG. 4).

The hot air generated by the hot air generators 21A and 21B is supplied to the blower drums 15A and 15B and the drying room 17A.
0A, 170B, and then pass through the air discharge tunnels 16A, 16B, are once sucked by the suction and discharge fans 22A, 22B, and then discharged to the dust collection device 27 through the dust discharge ducts 26A, 26B. At this time, each of the drying sections 17A, 17A
The dust generated in B is discharged together with the hot air into the dust discharge ducts 26A and 26A.
6B (see FIG. 4).

The raw rice in the storage units 18A and 18B passes through the drying rooms 170A and 170B, and then is discharged into the rice discharge unit 19A.
A, 19B, through the fryers 20A, 20B, the storage unit 18
A, 18B. And the raw rice repeats self-circulation, the moisture content of raw rice is 17-18% (preliminary drying is completed)
At the time when the paddy discharging units 19A and 19B
It is transferred to appropriate main silos 7A to 7F via the conveyor belts 0A and 20B and the charging belt conveyor 9.

When all of the preliminary drying is completed, finish drying is performed. A paddy with a moisture content of 17 to 18% is taken out from any silo, divided into two silos 8A and 8B, thrown in, and self-circulated by the fryers 20A and 20B to finish-dry to a moisture content of about 15%. I do. Then, the dried paddy that has been finished and dried is returned to the original main silo. Finished and dried paddy is taken out from the silo and taken out of the conveyors 11A to 11D.
The rice is then conveyed to the rice hulling / selection device 5 through the milling machine 12, where the rice hulling and selection are performed, and then stored in the refined product tank 6 in preparation for shipment (see FIGS. 1 and 2).

Dust is also generated in the roughing device 3 and the hulling / selecting device 5 during operation, and the dust is generated by the suction force of the suction and discharge fans 28 and 29 and the dust collection ducts 23 and 2.
After being taken into the suction / discharge fans 28 and 29 once through the filter 5, they are discharged to the dust collection ducts 23 and 25. And it is sent to the said dust processing apparatus 27 (refer FIG. 3).

The above-mentioned interval silos have been described in two parts.
Or two or more.

In the above description, the interval silos 8A, 8B
Although it was explained that raw paddy did not enter into both of them, even in a state where raw paddy did not enter only one of the interval silos, the control device 31 appropriately controlled the load and generated it by the receiving hopper 2. Dust that can be collected.

[0034]

According to the first aspect of the present invention, the load receiving hopper is provided with a dust collecting port for collecting dust generated in the load receiving hopper, and the dust collecting port and the suction side of the suction / discharge fan are provided. Are connected by a dust collection duct, so that dust generated in the receiving hopper is once taken into the suction discharge fan through the dust collection duct by the suction force of the suction discharge fan of the drying unit, and then discharged to the dust discharge duct. You.

Accordingly, it is not necessary to provide a dedicated suction / discharge fan for collecting dust generated in the load receiving hopper as in the prior art, so that the dust collection equipment can be simplified and the equipment cost can be reduced, and the running cost can be reduced. Costs can also be reduced.

According to the second aspect of the present invention, in addition to the first aspect, the on-off valve is provided on the dust collection duct, so that the on-off valve can open and close the flow path in the dust collection duct. it can.

The on-off valve can be opened only when the drying equipment is in a stuck state. Therefore, the suction force of the suction / discharge fan for sucking the hot air during the drying process of the drying equipment does not decrease, so that the hot air flows well in the drying unit.

According to the third invention of the present application, in addition to the first invention and the second invention, a plurality of the drying facilities are provided,
Each of the dust collection ducts is connected to each suction / discharge fan and provided with an on-off valve, and provided with detection means for detecting the amount of grain stuck in the storage section, wherein the detection means, each on-off valve, and each suction / discharge fan are provided. Since the control means connected to the transport means is provided, the control means, based on the signal of the detection means, controls the switching of the transport means so as to stick the grain into the storage unit of another drying equipment, The switching of the opening / closing valve is controlled in correspondence with the operation of the suction / discharge fan.

Therefore, even if the amount of the grain stuck in one interval silo becomes full, the stitching is switched to the other interval silo, so that the grain can be continuously transferred in the receiving hopper. Dust generated in the receiving hopper can also be collected.

According to a fourth aspect of the present invention, in addition to the first to third aspects, a discharge side of the suction discharge fan and a dust treatment apparatus for collecting and treating dust generated in a grain drying and preparing facility are provided. Are connected by a dust discharge duct, the dust generated in the load receiving hopper 2 is sent to the dust treatment device via the suction discharge fan of the drying section and the dust discharge duct, and is processed.

The size (scale) of the dust treatment device is selected according to the amount of air sent (the higher the scale, the higher the price of the dust treatment device). In the present invention, since a dedicated suction / discharge fan for collecting dust generated in the receiving hopper is not required, the amount of air sent to the dust treatment device is reduced. Therefore, the dust processing apparatus can be smaller in size than the conventional one, and therefore can be used at a lower price than the conventional one.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a grain drying preparation facility of the present invention.

FIG. 2 is a cross-sectional view of the above.

FIG. 3 is a schematic diagram showing a dust collecting facility of the grain drying and preparing facility of the present invention.

FIG. 4 is a schematic diagram showing a dust collecting facility of the grain drying and preparing facility of the present invention.

FIG. 5 is a schematic diagram showing a dust collecting facility of a conventional grain drying and preparing facility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Receiving hopper 2a Grid part 2b Wall part 2c Intake opening 2d Switch (communication means) 2e Pit 3 Rough selection device 4 Graining machine 5 Hulling / selection device 6 Fine tank 7A Main silo 7B Main silo 7C Main silo 7D Silo 7E Main silo 7F Main silo 8A Interval silo (drying equipment) 8B Interval silo (drying equipment) 8a Perimeter wall 8b Perimeter wall 9 Feeding belt conveyor 10 Silo fryer 11A Removal belt conveyor 11B Removal belt conveyor 11C Removal belt Conveyor 11D Belt conveyor for take-out 12 Graining machine 15 Blower drum 16 Exhaust drum 17A Drying section 17B Drying section 18A Storage section 18B Storage section 19A Discharge section 19B Discharge section 20A Flourizer 20B Flourer 21A Hot air generator 21B Hot air generator Device 22A Suction discharge fan 22B Suction discharge Fan 23 dust collecting duct 24 the dust collecting duct 24A branch duct 24B branch duct 25 dust collecting duct 26A dust-exhaust duct 26B dust-exhaust duct 27 Dust processor 28 suction and discharge fan 29 suction exhaust fan 30A-off valve 30B off valve 31 control device

Claims (4)

[Claims] 1. A drying facility comprising a receiving hopper, a grain storage unit and a drying unit for drying the grain, and conveying means for conveying the grain received by the receiving hopper to a storage unit of the drying facility. In the grain drying preparation facility provided with a suction discharge fan having a dust discharge duct on the discharge side, the drying unit is provided with a dust collection port for collecting dust generated in the load receiving hopper. A dust collection facility, wherein the dust collection port and the suction side of the suction / discharge fan are connected by a dust collection duct. 2. The dust collecting facility of a grain drying and preparing facility according to claim 1, wherein an open / close valve is provided in the dust collecting duct. 3. A plurality of the drying facilities are provided, and each of the dust collecting ducts is connected to each suction / discharge fan, provided with an on-off valve, and provided with a detecting means for detecting an amount of grain stuck into the storage section, The dust collecting facility of a grain drying and preparing facility according to claim 1 or 2, further comprising control means connected to the detection means, each of the on-off valves, each of the suction / discharge fans, and the transport means. 4. The grain drying apparatus according to claim 1, wherein a discharge side of the suction / discharge fan is connected to a dust treatment device that collects and treats dust generated in the grain drying preparation facility by a dust discharge duct. Dust collection equipment at the preparation facility.