JP2009298535A - Continuous suction type pneumatic transport apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous suction type pneumatic transport apparatus having batch-type suction-type pneumatic transporters for transporting fragile pieces such as fruits without no damage or safely. <P>SOLUTION: A distributor 22 is disposed between one common pneumatic transport pipe 20 and the two batch-type suction-type pneumatic transporters 24. The distributor 22 has a cyclone chamber with a cylindrical inner circumferential surface and a concave bottom face and has two outlet pipes 50 connected to inlet pipes 60 of the two pneumatic transporters 24, respectively. Fruits coming into the cyclone chamber of the distributor 22 are collected at the bottom face while rolling on the cylindrical inner circumferential surface, so that the fruits are not damaged. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an improvement of a continuous suction type air transport apparatus including two batch type suction air transport machines that operate alternately, and more particularly, a fragile material such as a fruit that is not damaged or is safe. The present invention relates to a pneumatic transport device that can be transported to a vehicle.

Japanese Patent No. 4060662 (Japanese Patent Application Laid-Open No. 2004-131189) discloses an air transport apparatus including two batch suction air transport machines that operate alternately. According to this apparatus, a granular material can be pneumatically transported continuously in a high concentration transport mode.

  FIG. 1 shows an outline of this apparatus, which is configured to pneumatically transport the granular material contained in the first container 1 to the second container 2, and is common to the suction nozzle 3. Air transport pipe 4 and two batch suction air transport machines 5.

  In this apparatus, the inlet pipes 6 of the two batch suction type air transporters 5 are connected to the air transport pipe 4 via the Y-shaped pipes 7, and the two batch suction type pneumatic transporters 5 are connected to each other. By operating alternately, a suction air flow for conveyance is continuously maintained in the pneumatic transport pipe 4.

However, since the Y-shaped tube 7 is used to connect the air transport pipe 4 to the two batch suction air transport machines 5, the air transport pipe 4 is sent from the air transport pipe 4 on the carrier air flow. The object collides with the branch portion 8 of the Y-shaped tube 7.
As a result, when an object to be transported is easily damaged such as fruit, it is damaged by colliding with the branching portion 8, and the commercial value is reduced.

  An object of the present invention is to provide a continuous suction type air transport device capable of transporting easily damaged roses such as fruit without being damaged.

The present invention provides for the supply of bulk material by connecting the inlet tubes of two batch suction air transporters operating alternately to a common pneumatic transport tube that extends from the source of the bulk material. In a pneumatic transport device that has been continuously pneumatically transported from one to the destination:
A cyclone chamber defined by a substantially cylindrical inner peripheral surface, an upper end surface, and a substantially concave bottom surface; an inlet pipe opening in a tangential direction to the cyclone chamber; A distribution means having two outlet pipes extending downward to the vicinity,
The inlet pipe of the distribution means is connected to the downstream end of the pneumatic transport pipe, and the two outlet pipes are connected to the inlet pipes of the two pneumatic transport machines, respectively.

When in use, the two batch-type pneumatic transporters operate alternately to establish a continuous suction air flow in the air transport pipe, and the bulk material to be transported rides on the suction air flow first to the cyclone chamber of the distribution means. Be transported. Loose material that enters the cyclone chamber from the tangentially open inlet pipe rolls along the cylindrical inner peripheral surface and then the concave bottom surface of the cyclone chamber, and gradually loses its speed. Draw a trace and drop and accumulate on the bottom of the cyclone chamber.
In this way, the loose materials gather on the bottom of the cyclone chamber while rolling on the cylindrical inner peripheral surface and the concave bottom surface of the cyclone chamber, so that even fragile objects such as fruits can be damaged. There is no.
As the two batch pneumatic transporters operate alternately, the roses accumulated on the bottom of the cyclone chamber are alternately sucked from the two outlet pipes that extend to the vicinity of the bottom of the cyclone chamber. Distributed to transport aircraft.

  FIG. 2 shows an embodiment of the pneumatic transport device of the present invention. Referring to FIG. 2, the pneumatic transport device 10 pneumatically transports a fragile fruit-like material 14 contained in a first container 12 to a second container (for example, a transport destination hopper) 16. It is configured accordingly.

  This pneumatic transport device 10 includes a suction nozzle 18 for sucking the fruit 14 contained in the container 12, an air transport pipe 20 extending from the suction nozzle 18, and a distributor 22 connected to the end of the air transport pipe 20. , Two batch type suction type pneumatic transport machines 24 installed on the transport destination hopper 16, a vacuum source 26 such as a blower, and a control device 28.

Preferably, each batch pneumatic transporter 24 has a configuration as disclosed in Japanese Patent Application Laid-Open No. 2003-104550. The pneumatic transport machine 24 discharges the shut-off valve 30 arranged at the outlet to control the transmission of the negative pressure from the vacuum source 26 and the bulk material sucked into the pneumatic transport machine 24 toward the transport destination hopper 16. A damper device 32 is provided. Since the above publication can be referred to for the configuration of the pneumatic transport device 24, a detailed description thereof will be omitted.
The outlet with the shut-off valve 30 of each pneumatic transporter 24 is connected to a vacuum source 26 by a vacuum pipe 34.
The controller 28 is programmed to alternately operate the two pneumatic transporters 24 by alternately opening and closing the shut-off valves 30 of the two pneumatic transporters 24.

FIG. 3 is an enlarged view of the distributor 22 shown in FIG. Referring to FIG. 3, the distributor 22 can be composed of a main body 36 and a lid 38 formed of stainless steel plate or the like, and the main body 36 and the lid 38 have a plurality of buckle devices for the convenience of internal cleaning. 40 are separably coupled.
A main body 36 of the distributor 22 has a cylindrical inner peripheral surface 42 and a concave bottom surface 44, and a cyclone chamber 46 is formed inside the main body 36.

The main body 36 of the distributor 22 is provided with an inlet pipe 48 that opens in a tangential direction with respect to the cyclone chamber 46.
Two outlet pipes 50 that pass through the top plate and extend to the vicinity of the bottom surface 44 are fixed to the lid 38 of the distributor 22 by welding or the like.
The distributor 22 is supported by, for example, four legs 52 welded to the main body 36. The main body 36 is provided with a drain outlet 56 having a manual valve 54.

As shown in FIG. 2, the inlet pipe 48 of the distributor 22 is connected to a pneumatic transport pipe 20 extending from the suction nozzle 18.
The two outlet pipes 50 of the distributor 22 are connected to the inlet pipe 60 of the pneumatic transport machine 24 by pneumatic transport branch pipes 58, respectively.

Next, the mode of operation of this pneumatic transport device 10 will be described.
When the blower 26 as a vacuum source is operated and the shutoff valves 30 of the two pneumatic transporters 24 are alternately opened, the two pneumatic transporters 24 are alternately operated. As a result, the conveying air is alternately sucked into the two air transporters 24 via the suction nozzle 18, the air transport pipe 20, the distributor 22, and the air transport branch pipe 58. By slightly overlapping the switching timings of the shutoff valves 30 of the two air transporters 24, a continuous conveying suction air flow is established in the air transport pipe 20.

  When the operator inserts the tip of the suction nozzle 18 into the container 12 as shown in FIG. 2, the fruit 14 in the container rides on the suction air flow for conveyance, and the air transport pipe 20, the distributor 22, and the air transport machine. It is conveyed toward 24. As described above, since a continuous conveying suction air flow is established in the pneumatic transport pipe 20, the fruit to be transported does not fall and settle in the vertical portion of the pneumatic transport pipe 20 to the distributor 22. Is sucked smoothly. Therefore, the length of the vertical portion of the pneumatic transport pipe 20 can be, for example, about 10 m or more, and the fruit can be reliably conveyed to the distributor 22 installed at a sufficient height from the ground.

The fruit that has entered the cyclone chamber 46 in the cyclone chamber 46 from the inlet pipe 48 of the distributor 22 while riding on the conveying suction air flow rolls along the cylindrical inner peripheral surface 42 of the cyclone chamber, and the arrow in FIG. It falls while drawing a spiral trajectory shown in FIG. 1, and reaches the concave bottom 44 while gradually losing speed.
The fruit then stalls further while rolling on the concave bottom surface 44 and collects in the center of the concave bottom surface 44.
As described above, the fruits 14 sent to the distributor 22 gather on the bottom of the cyclone chamber while rolling on the cylindrical inner peripheral surface 42 and the concave bottom surface 44 of the cyclone chamber 46, so that damage to the fruits is minimized. It is suppressed.
As a result of testing this apparatus, it was possible to transport the plums for plum wine to a sufficiently high height while maintaining the commercial value to a satisfactory level.

  The fruits gathered on the bottom surface 44 of the distributor 22 are alternately sucked into the air transporter 24 from the two outlet pipes 50 of the distributor 22 as the two air transporters 24 operate alternately. Thus, the distributor 22 serves as a branch pipe that distributes the fruit sent through one common pneumatic transport pipe 20 to the two batch type pneumatic transport machines 24.

  Further, the fruits are sucked into the air transport machine 24 through the outlet pipe 50, the air transport branch pipe 58, and the inlet pipe 60 of the distributor 22 by riding on the suction air flow for conveyance, and are fixed in the air transport machine 24. The gas is separated and stored on the damper of the damper device 32. By periodically releasing the damper, the fruit is discharged to the destination hopper 16.

  As described above, according to the present invention, it is possible to pneumatically transport an easily damaged loose material such as fruit intact or safely using two batch suction air transporters that operate alternately.

  Although specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various changes and modifications can be made. For example, a hopper is exemplified as a transportation destination or destination of the bulk material, but the transportation destination may be a belt conveyor. In addition, various types of vacuum conveyors can be used as the batch-type suction pneumatic transporter. The shape of the bottom surface of the distributor can be a partial sphere or a hemisphere.

It is a schematic diagram of the conventional pneumatic transport apparatus. It is a schematic diagram of the pneumatic transport apparatus of the present invention. It is an enlarged view of the divider | distributor of the pneumatic transport apparatus of this invention shown in FIG. 2, (A) is a side view, (B) is a horizontal sectional view.

Explanation of symbols

10: Pneumatic transport device 12: Supply source 14: Bulk material 16: Destination hopper (destination)
20: Pneumatic transport pipe 22: Distributing means (distributor)
24: Batch suction air transporter 26: Vacuum source 42: Cylindrical inner peripheral surface of the distributor 44: Concave bottom surface of the distributor 46: Cyclone chamber of the distributor 48: Inlet pipe of the distributor 50: Outlet pipe 60: Pneumatic transport machine inlet pipe

Patent Applicant YMS Co., Ltd. Inventor Takeshi Arai Agent Patent Attorney Hiroshi Ito

Claims (2)

By connecting the inlet pipes of two batch suction air transporters that operate alternately to a common air transport pipe that extends from the source of the bulk material, the bulk material is supplied from the source to the destination. In a pneumatic transport device that is now in continuous pneumatic transport:
A cyclone chamber defined by a substantially cylindrical inner peripheral surface, an upper end surface, and a substantially concave bottom surface; an inlet pipe opening in a tangential direction to the cyclone chamber; A distribution means having two outlet pipes extending downward to the vicinity,
An air transporting apparatus characterized in that the inlet pipe of the distribution means is connected to the downstream end of the pneumatic transport pipe, and the two outlet pipes are connected to the inlet pipes of the two pneumatic transporters. 2. The pneumatic transport device according to claim 1, wherein the bulk material to be conveyed is a fruit.

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