JP6489498B2 - Dry dust collector at cereal drying preparation facility - Google Patents

Description

The present invention belongs to the technical field of a dry dust collector that collects dust contained in exhaust air generated in a grain drying preparation facility such as a rice center or a country elevator, and in particular, transport of removed dust. And emissions.

Conventionally, harvested cereals such as rice are subjected to processing such as drying at a cereal drying preparation facility and stored in a silo. In this cereal drying preparation facility, a large amount of exhaust air containing fine dust is generated when the treatment is performed, and thus, for example, a dry dust collector as described in Patent Document 1 is used. This dry dust collector removes dust by passing exhaust air through a filter attached to the outer peripheral surface of a cylindrical drum. During this removal, the dust adhering to the filter is sucked by the suction nozzle and collected by the concentration collection device (cyclone), and the dust falling below the cylindrical drum without adhering to the filter is removed from the cylindrical drum. It accumulates on the floor surface of the sedimentation chamber provided below, and is collected in the accumulated state. Therefore, the dry dust collector is configured to collect dust at two locations, the concentrated collection device and the sedimentation chamber.

For this reason, the dry dust collector must collect dust that does not need to be collected separately at two locations, so that the efficiency of the recovery operation is poor and the dust accumulated on the floor in the sedimentation chamber must be collected manually. There was a problem that had to be done.

JP 2014-233705 A

In view of the above problems, it is a technical object of the present invention to provide a dry dust collector capable of efficiently collecting the removed dust.

In order to achieve the above object, the present invention provides:
A rotating hollow cylindrical drum with a filter attached to the outer peripheral surface to remove dust,
A purified air outlet for discharging purified air that has passed through the filter of the cylindrical drum;
A suction nozzle for sucking dust adhering to the filter;
A dust removing device for removing dust sucked by the suction nozzle;
A dust collection hopper that collects dust falling below the cylindrical drum;
An exhaust inlet for introducing exhaust into the dust collecting hopper;
A transport device for transporting dust collected by the dust collection hopper;
In a dry dust collector of a cereal drying preparation facility composed of:
The conveying apparatus the endless chain and without providing the above-up piece at regular intervals scrapes, provided with a collecting outlet discharging side increased to discharge the dust of the conveying device, the dust removing system in該回acquisition outlet A recovery body for collecting dust is disposed below the discharge side of the transport device, and an opening of the recovery body is directly attached to the recovery outlet. Measures were taken.

In the dry dust collector according to the first aspect of the present invention, since the discharge outlet for connecting the dust remover is connected to the conveying device, the dust discharged from the outlet for connecting and falling into the conveying device is collected in a dust collecting hopper. It is discharged to the outside from the recovery outlet together with the dust that has fallen into the container and transported by the transport device. For this reason, since the location which discharges dust should just be provided in one location of the above-mentioned collection outlet, the dust collector can be miniaturized and can be manufactured at low cost. In addition, since the discharged dust may be collected only at the collection outlet, the collection operation can be performed efficiently. Furthermore, since dust does not leak out from the connection outlet of the dust remover, the dust remover and its surroundings are not contaminated with dust and can be kept clean.

Further, the dry dust collector of the present invention is provided with a recovery outlet for discharging dust and a connection outlet of the dust removing apparatus on the discharge side of the transport device, so that Since there is almost no distance for transporting the dust that has fallen into the transport device from the connection discharge port by the transport device, there is no transport load on the transport device due to the dust and transport. There is no need to increase the carrying capacity of the device.

Further, in the dry dust collector of the present invention , the transport device is an endless chain provided with fisting pieces at equal intervals, and a recovery discharge port for discharging dust by raising the discharge side of the transport device is provided, A collection body that collects dust is arranged below the discharge side, and the opening of the collection body is directly attached to the collection outlet, so that dust does not scatter and scatter, and dry dust collection. It is easy to keep the environment around the device hygienic.

It is a mimetic diagram for explaining a grain dry preparation facility. It is an A-A 'line schematic sectional drawing of FIG. It is a schematic sectional side view of the dry dust collector of this invention. It is a perspective view which shows an example of the dry-type dust collector of this invention.

Hereinafter, it will be described in detail with reference to the drawings. FIG. 1 is a schematic view for explaining the configuration of a country elevator 50 which is a cereal drying preparation facility in which the dry dust collector 28 of the present invention is arranged, and FIG. 2 is a schematic sectional view for explaining the structure (FIG. 1). AA ′). The country elevator 50 includes a building 1, a silo group (7 </ b> A to 7 </ b> F), and a dry dust collector 28.

In the building 1, a stretch hopper 2 is embedded in the floor and a coarse selection device 3 is arranged, and a cerealing machine 4 connected to these is erected. In addition, a rice huller / refiner 5 and a refined tank 6 adjacent to the rough selector 3 are arranged.
A silo group is provided on one side of the building 1. That is, the silos 7A to 7C and 7D to 7F are arranged in a two-row configuration, and the gap silo 8A is located at the upper center surrounded by the silo 7A, silo 7B, silo 7D, and silo 7E, and the silo 7B, silo 7C, A gap silo 8B is provided at each of the center upper portions surrounded by the silo 7E and the silo 7F.

On the roof of the silo group, a loading belt conveyor (not shown) connected to the loading ports of all the silos 7A to 7F, the gap silo 8A and the gap silo 8B is provided side by side, and the conveying start end side of the belt conveyor The silo cerealing machine 10 to be connected to is erected. On the other hand, take-out belt conveyors 12A to 12D connected to discharge ports of the silo group are disposed below the silo group. Further, the takeout belt conveyor 12A extending to the inside of the building 1 is connected to the cerealing machine 13, and the upper discharge side of the pulverizing machine 13 is branched so that the silo cerealing machine 10 side and the rice huller / selector device are separated. 5 is connected.

Next, the gap silo 8A and the gap silo 8B will be described. Since each gap silo 8A and 8B has the same structure, only one gap silo 8A will be described. A gap silo 8A is installed at the upper part of the center surrounded by the silo 7A, silo 7B, silo 7D and silo 7E, and the drying unit 20 is installed at the lower part of the center. A square cylindrical partition wall 14 inscribed in the inner wall of the clearance silo is provided below the clearance silo 8A, and one of the spaces formed by the partition wall 14 and the inner wall of the clearance silo is provided in the blower cylinder 15 and the blower cylinder. A so-called LSU type in which spaces opposite to 15 are formed in the wind exhaust drum 16, the inside of the partition wall 14 is the drying chamber 20, the lower end is opened in the drying chamber 20 and the upper end is mountain-shaped. Many air passages 17 are installed in the same direction. The air passage 17 is composed of an air passage having an opening on the air drum 15 side end and an air exhaust passage having an opening on the air exhaust drum 16 side, and the air drum 15 generates hot air including a burner and a blower. A blower fan 30 for sucking the exhaust air and sending it to the dry dust collector 28 is connected to the exhaust duct 16 and the apparatus 18. Also, an exhaust duct 31 for sending exhaust air from the blower fan 30 and a general dust collection duct 32 for sending exhaust air from the coarse selection device 3 and the hulling / selection device, etc. are arranged, respectively. The duct is connected to the exhaust air introduction port 33 of the dry dust collector 28 by a concentrated pipe.

In addition, a funnel-shaped inclined surface 21 is provided connected to the upper end of the partition wall 14, and a mountain-shaped flow restricting body is horizontally placed inside the inclined surface 21, while at the bottom of the drying chamber 20. A plurality of rotary valves are provided in a continuous manner, and a grain hopper and a discharge screw conveyor are provided below the rotary valves.

Furthermore, the gap silo above the drying unit composed of the drying chamber 20, the blower drum 15, the exhaust drum 16 and the like is not used as a storage unit (the storage unit 26 may be provided with an appropriate flow regulating body) and stored. The feeding part at the upper end of the part 26 and the branch part of the discharge path from the discharge screw conveyor 25 to the take-out belt conveyor 12C are connected by a masher 27A. Further, the grain feeding path from the cerealing machine 27 </ b> A to the supply unit of the storage unit 26 is branched and communicated to the charging belt conveyor 9.

The dry dust collector 28 will be described. FIG. 3 is a schematic sectional side view of the dry dust collector 28. The dry dust collector 28 is covered with an outer wall 34, and a rotating hollow cylindrical drum 35 is provided in the outer wall 34. A filter 36 through which air passes but dust cannot pass is attached to the outer peripheral surface of the cylindrical drum 35. The filter 36 can be a nonwoven fabric or a raised cloth. The cylindrical drum 35 is rotated by a rotating shaft 37 connected to a motor 38. The cylindrical drum 35 may be rotated by another means without providing the rotating shaft 37. One end of the cylindrical drum 35 on the side where the motor 38 is located is provided with an opening 39 so that the exhausted air that has passed through the filter 36 can pass through as purified air. The purified air is discharged from the purified air discharge port 51. Further, a sealing elastic body 54 is provided in the gap between the cylindrical drum 35 and the side wall 55 so that the exhausted air does not pass through the filter 36 and is not discharged outside the apparatus. The material of the sealing elastic body 54 is an elastic body such as rubber, and is in contact with the cylindrical drum 35 to the extent that the rotation of the cylindrical drum 35 is not prevented, so that air cannot be exhausted from the gap. . On the other hand, the other end of the cylindrical drum 35 is sealed by the side wall 40 so that the exhausted air cannot pass through.

A suction nozzle 41 that sucks dust adhering to the surface of the filter 36 is provided adjacent to the outer peripheral surface of the cylindrical drum 35. The suction nozzle 41 is connected to a dust removal device 43 by a dust removal exhaust pipe 42. As the dust removing device 43, a centrifugal separation method can be used, and a cyclone is used in the present invention. A suction fan 52 is connected to the dust removing device 43, and the suction nozzle 41 sucks dust adhering to the surface of the filter 36 by the suction force of the blower fan.

A dust collection hopper 44 is provided below the cylindrical drum 35, and dust that has fallen on the dust collection hopper 44 without passing through the filter 36 of the cylindrical drum 35 is disposed below the dust collection hopper 44. It is conveyed by the device 45 and discharged out of the machine. The dust collection hopper 44 is provided with the exhaust air introduction port 33.

The transport device 45 discharges the removed dust to the outside of the machine, and transports the dust that has dropped from the discharge port formed at the lower end of the dust collection hopper 44. In the present invention, a chain conveyor is used for the conveying device 45, but a belt conveyor, a screw conveyor, or the like can also be used. The conveying device 45 is provided with the conveying start end on the exhaust air introduction port 33 side (the right side in FIG. 3) in the same direction as the rotating shaft 37 of the cylindrical drum 35, and further on the discharge side which is the conveying end side. A discharge port 46 is provided. The recovery outlet 46 extends in the dust discharge direction, and this portion serves as the attachment portion 58 of the recovery body 47. The chain conveyor which is the transport device 45 includes an annular endless chain, a pulley on the transport start end side, a pulley on the transport end side, and a conveyor drive device (not shown) incorporating a motor for driving these pulleys. It is composed. The endless chain is provided with scraping pieces 57 for scraping off wrinkles and scraps at equal intervals.

Below the collection outlet 46, a collection body 47 such as a flexible container is disposed as dust collection means, and the collection body 47 collects dust. As shown in FIG. 3, the collection body 47 directly attaches the opening to the collection outlet 46. By attaching in this way, the dust is not scattered and scattered when the dust is discharged, and the environment around the dry dust collector 28 can be kept hygienic. Further, it is possible to prevent the exhaust air pressure-fed into the dry dust collector 28 from the exhaust air inlet 33 by the blower fan from exiting from the recovery outlet 46 of the transport device 45. The collection body 47 may be a bag-like one, but a container may be used. In the present invention, the recovery outlet 46 is provided at a high position in order to secure a space for arranging the recovery body 47.

By the way, in the present invention, a connection discharge port 48 of the dust removing device 43 is connected to the transport device 45. FIG. 3 shows an example in which the transfer device 45 is connected to a position above the recovery discharge port 46. By connecting to this position, it is possible to reduce the distance that the dust removed by the dust removing device 43 is transported by the transport device 45, so that there is an advantage that the burden on the transport of the transport device can be reduced. A rotary valve 49 is provided above the connection discharge port 48. The rotary valve 49 also serves to prevent dust from flowing back from the conveying device 45 to the dust removing device 43.

Hereinafter, the operation of the above configuration will be described. First, exhaust air containing dust generated when processing the grain by the country elevator 50 is pumped by a blower fan, and exhausted from the dry dust collector 28 via the exhaust air duct 31 and the general dust collection duct 32. The air is introduced into the dust collection hopper 44 from the wind introduction port 33. At this point, relatively large dust such as soot and straw waste contained in the exhausted air falls to a transport device 45 provided below the dust collection hopper 44, and is transported by the transport device 45. It is discharged outside. If the conveying device 45 is a chain conveyor, dust falling from above can be reliably conveyed without clogging. It is also possible to easily convey the dust to a high position.

Since the exhaust air introduced into the dust collection hopper 44 is pumped, the dust collection hopper 44 is in a pressurized state, and therefore passes through the filter 36 of the cylindrical drum 35 that serves as a vent for exhaust air. Since the filter 36 is made of a material that allows air to pass through but does not allow dust to pass through, the exhaust air that has passed through the filter 36 is purified at this time to become purified air. By the way, it is preferable to provide means for sealing the dust collecting hopper 44 in the transport device 45 so that the exhausted air is not discharged from the recovery outlet 46 of the transport device 45.

The purified air that has passed through the filter 36 passes through the opening 39 of the cylindrical drum 35 and is discharged from the purified air discharge port 51 to the outside of the dry dust collector 28. Note that a suction fan may be provided at the opening 39 or the purified air discharge port 51 so that the exhaust air can easily pass through the filter 36.

Part of the dust that could not pass through the filter 36 falls and is transported to the outside by the transport device 45, and the remaining dust adheres to the filter 36. The adhering dust is sucked by the suction action of the suction nozzle 41. Since the cylindrical drum 35 is rotated by the rotating action of the motor 38, the film 36 attached to the outer peripheral surface of the cylindrical drum 35 is sucked by the suction nozzle 41 without unevenness. The cylindrical drum 35 may be fixed and the suction nozzle 41 may be moved along the outer peripheral surface of the cylindrical drum 35.

The dust sucked by the suction nozzle 41 is sent to the dust removal device 43 through the dust removal exhaust pipe 42 and the suction fan 52. Since the dust removing device 43 is a cyclone, the dust is separated from the air by the cyclone, and is discharged into the conveying device 45 through the rotary valve 49 and the connection discharge port 48 provided below the cyclone. At this time, dust does not leak from the connection discharge port 48, so that the dust removing device 43 and its surroundings are not contaminated by dust and can be kept clean.

The dust discharged from the connection discharge port 48 is directly discharged from the recovery discharge port 46 of the transport device 45 or is transported by the transport device 45 and discharged from the recovery discharge port 46. The dust discharged from the recovery outlet 46 is recovered by the recovery body 47 together with the dust transported from the dust collection hopper 44. The air separated from the dust is discharged from the discharge port 56 as purified air. For this reason, the dust collection location is only one location of the collection outlet 46, and the collection operation is facilitated. Further, since it is not necessary to provide a device for collecting dust in the dust removing device 43, the device can be miniaturized and the equipment cost can be reduced. Furthermore, since the dust discharged from the discharge port of the dust collecting hopper 44 is discharged to the outside of the dry dust collecting device 28 by the transport device 45, it is not necessary to manually collect the dust, and the dust collecting operation is easy. Productivity is improved.

In the dust collecting and drying device 28 of the embodiment of the present invention, the dust removing device 43 is connected to the end portion side of the transport device 45 where the recovery outlet 46 is provided, but the connecting position is limited to this position. For example, it may be connected to the conveying device 45 on the side where the exhaust air introduction port 33 is located.

It goes without saying that the configuration of the present invention can be changed as appropriate without departing from the scope of the invention.

The dry dust collector 28 of the present invention is not limited to use in a cereal drying preparation facility, but can be used in other facilities and factories as long as dust can be conveyed by air. It is.

DESCRIPTION OF SYMBOLS 1 Building 2 Tension hopper 3 Coarse-selection device 5 Rice hulling and fine-selection device 6 Fine tank 7 Silo 8 Gap silo 10 Silo graining machine 12 Extraction belt conveyor 13 Graining machine 14 Bulkhead 15 Air blow drum 16 Wind exhaust drum 17 Wind Path 18 Hot-air generator 20 Drying chamber 21 Inclined surface 26 Reservoir 28 Dry-type dust collector 30 Blower fan 31 Exhaust duct 32 General dust-collection duct 33 Exhaust air inlet 34 Outer wall 35 Cylindrical drum 36 Filter 37 Rotating shaft 38 Motor 39 Opening 40 Side wall 41 Suction nozzle 42 Dust removal exhaust pipe 43 Dust removal device 44 Dust collection hopper 45 Conveying device 46 Recovery discharge port 47 Recovery body 48 Connection discharge port 49 Rotary valve 50 Country elevator 51 Purified air discharge port 52 Suction fan 53 Dust 54 Sealing elastic body 55 Side wall 56 Discharge port 57 Scooping piece 58 Mounting portion

Claims (1)

A rotating hollow cylindrical drum with a filter attached to the outer peripheral surface to remove dust,
A purified air outlet for discharging purified air that has passed through the filter of the cylindrical drum;
A suction nozzle for sucking dust adhering to the filter;
A dust removing device for removing dust sucked by the suction nozzle;
A dust collection hopper that collects dust falling below the cylindrical drum;
An exhaust inlet for introducing exhaust into the dust collecting hopper;
A transport device for transporting dust collected by the dust collection hopper;
In a dry dust collector of a cereal drying preparation facility composed of:
The conveying apparatus the endless chain and without providing the above-up piece at regular intervals scrapes, provided with a collecting outlet discharging side increased to discharge the dust of the conveying device, the dust removing system in該回acquisition outlet A recovery body for recovering dust is disposed below the discharge side of the transport device, and an opening of the recovery body is directly attached to the recovery outlet. A dry dust collector of a cereal drying preparation facility.

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