JP4948779B2 - Air transfer device - Google Patents

Description

  Conventionally, when powdered grain like rice is transported by air as a transported object by suction or blast, the air transport apparatus is provided with an air transport path for air transporting the transported object supplied from the transported object supply unit. In addition, the end portion of the air conveyance path is inserted into the conveyance object recovery unit that receives and collects the conveyed object that has been conveyed, and the conveyance object flows directly into the conveyance object recovery unit from the terminal part of the air conveyance path. It was.

  In this way, when the conveyed product flows directly into the conveyed product recovery unit from the end of the air conveyance path, the conveyed product flows into the conveyed product recovery unit in the conveying direction during air conveyance, and is conveyed from the time of air conveyance. The speed was not slowed down. Therefore, the conveyed product collided with the inner wall surface or the like of the conveyed product recovery portion while maintaining the momentum during air conveyance, and the conveyed item was damaged.

Therefore, by arranging a guide at the end of the air conveyance path and changing the conveyance direction of the conveyed object with the guide, the conveyance speed of the conveyed object gradually decreases, and the conveyed object is contained in the conveyance object collecting unit. There has also been proposed an air conveyance device that prevents collision with a wall surface. In such an air conveyance device, the guide is formed in a substantially inverted L shape in which a flat plate is curved, and the conveyance object is moved vertically along the guide by moving the conveyance object along the guide vertically. It changed to the direction and the conveyance speed of the conveyed product was decelerated (for example, refer patent document 1).
Japanese Patent Laid-Open No. 7-157083

  However, since the conventional guide described above has a shape in which the flat plate is curved, only one guide surface for guiding the conveyed product is formed, and the guiding force of the conveyed product is poor.

  Therefore, even if a guide is provided, the transported material that has flowed into the transported material collection unit will scatter in the left-right direction without the guide, and the transported product will collide with the inner wall surface of the transported material recovery unit and the guide itself, resulting in damage. It was.

  Moreover, since the said guide changes the conveyance direction of a conveyed product so that it may take in in a conveyed product collection | recovery part, it was difficult to provide multiple conveyance collection | recovery parts which raise | generate this guide function in an air conveyance path. On the other hand, in the market, it is also required to store a transported object in a plurality of transported object recovery units while sharing a transported object supply unit. Of course, in this case as well, damage to the transported object can be prevented. Is required.

Accordingly, in the present invention as set forth in claim 1, the air transport device is provided with an air transport path for transporting the transported object by airflow from the transported object supply unit to the transported object recovery unit , wherein the transported object recovery unit is an air transport path. The receiving hopper communicates with the receiving hopper, and the receiving hopper contains an air guide that guides and collects the conveyed material flowing into the receiving hopper from the inlet of the air conveying path toward the lower outlet. In the transfer device, the side wall of the receiving hopper connected to the air transfer path is inclined toward the lower outlet, and the guide is integrally connected to the end of the air transfer path connected to the receiving hopper. Then, the distal end side is bent downward from the proximal end portion attached to the air conveyance path to the distal end portion located immediately above the outlet, and the opening of the communicating portion where the distal end portion communicates with the receiving hopper Transport by placing within the range The guide path can be changed to a substantially right angle, and the guide opens downward from a guide wall that changes the transport direction of the transported object and a pair of side walls that extend along the transport direction and are arranged on the guide wall. The side wall of the receiving hopper having an inclined shape is disposed below the opened guide, and the end portion of the air conveyance path and the base end portion of the guide that is connected to and connected to the inside of the receiving hopper Is characterized in that it has become an enlarged part whose cross-sectional area is enlarged in the conveying direction .

According to a second aspect of the present invention, in the air conveyance device according to the first aspect, the conveyed product collection unit includes an exhaust port above the guide.

According to a third aspect of the present invention, in the air conveyance device according to the first or second aspect , a plurality of conveyance object recovery units are provided in the air conveyance path, and the upstream and downstream air conveyance units are provided in the conveyance object recovery units. A first guide that is formed to form a connection port with the path, and is provided with a guide at a connection port that communicates with a terminal portion of the upstream air conveyance path; and the guide is curved to change the conveyance direction. And a cylindrical second guide comprising a straight pipe, and the connection between the first guide and the second guide can be selectively switched between the first guide and the second guide. It is characterized by that.

According to a fourth aspect of the present invention, in the air conveyance device according to the third aspect , the downstream side air is interlocked with a switching operation for connecting the first guide to a terminal portion of the upstream side air conveyance path. The connection port of the transport path can be closed.

(1) According to the first aspect of the present invention, when the air conveyance is started, the conveyance collection unit at the air conveyance destination conveys the air from the inlet of the air conveyance path through the guide to the inside of the receiving hopper. Things flow in. At this time, the terminal end portion of the air conveyance path and the base end portion of the guide continuous to the terminal end portion are enlarged portions having a larger cross-sectional area than other portions. The speed is decelerated, and the decelerated conveyed product moves along the guide. Therefore, friction with the guide when the conveyed product moves along the guide can be reduced.
In addition, when the conveyed product moves along the guide in this way, the guide includes side walls at both ends of the guide wall as well as a guide wall that changes the conveying direction of the conveyed product from the horizontal direction to the vertical direction. Therefore, it is possible to stably guide the conveyed object downward without scattering, and to prevent the scattered conveyed object from colliding with the inner wall surface of the receiving hopper or the guide itself and damaging the conveyed object. it can.
Furthermore, since the guide is opened downward from the guide wall and the side wall, when the conveyed product moves from the air conveyance path to the guide, the air that has moved together with the conveyed product is removed from the open portion of the guide in the air conveyance path. To the outside and exhausted to the outside of the receiving hopper.
Thus, in the guide, air is exhausted outward without flowing along with the conveyed product, so that the flow velocity of the conveyed product decelerated in the air conveyance path and the enlarged portion of the guide can be further reduced.

Further, when the conveyed product that has moved along the guide reaches the tip of the guide, it is discharged from the guide, falls downward, and accumulates in the lower portion of the receiving hopper. At this time, since the conveyed object falling from the guide is sufficiently decelerated, the conveyed object does not collide with the inner wall surface of the receiving hopper and be damaged.
Also, the transported material deposited in the lower part of the receiving hopper in this way is taken out from the receiving port to the outside of the receiving hopper as appropriate, but the leading end of the guide is located directly above the transporting material outlet. When the conveyed product is deposited on the lower portion of the receiving hopper, the conveyed product is deposited in order from directly above the outlet.
In addition, the side wall of the receiving hopper that is inclined obliquely toward the take-out port is disposed below the guide, and it is assumed that a part of the conveyed product has dropped from the guide and dropped downward before reaching the tip of the guide. In addition, the conveyed product can be slid down along the inclined surface of the side wall to the outlet.
As described above, in the transported article collection unit, the transported articles that have flowed into the receiving hopper can be efficiently collected just above the take-out port, and the transported articles can be easily taken out from the receiving hopper.

The receiving hopper can also store the received transported object. Even in that case, since the guide is composed of the guide wall and the side wall and the lower part is opened, it is possible to deposit the transported object to the inside of the guide, and to store more transported object in the receiving hopper. Can do. Even when air conveyance is started again from such a storage state, if the conveyed item is taken out from the receiving hopper, the conveyed item clogged inside the guide is moved to the outside of the guide. Air transport can be started promptly without the transported material remaining inside being clogged.

( 2 ) According to the second aspect of the present invention, since the transported object recovery unit includes the exhaust port above the guide, the air flowing into the transported object recovery unit from the air transport path and the transported object Among them, the air is exhausted from above, while the conveyed product is collected downward, and the flow of air and the conveyed product can be reversed in the direction toward the outlet of the conveyed product collection unit. Therefore, air and a conveyed product can be reliably separated in the conveyed product recovery unit.

( 3 ) According to the present invention as set forth in claim 3 , a plurality of transported object recovery sections are provided in the air transport path, and connection ports for the upstream and downstream air transport paths are provided in the transported object recovery sections, respectively. The guide is provided at the connection port formed and communicated with the terminal end of the upstream air conveyance path, and the guide is a first guide curved to change the conveyance direction, and a cylinder made of a straight pipe And the connection between the first guide and the second guide can be selectively switched between the first guide and the second guide. While sharing, the transported object can be accommodated in the desired transported object recovery unit while preventing the damage.

( 4 ) According to the present invention as set forth in claim 4 , the connection port of the downstream air conveyance path is interlocked with the switching operation for connecting the first guide to the terminal portion of the upstream air conveyance path. Since the air that sucks the transported material does not leak into another transported product recovery unit located downstream when one transported product recovery unit is selected, efficient air transport is possible. It can be accommodated.

  The present invention is an air conveying apparatus suitable for air-conveying powdered grains such as rice, and in particular, conveys a conveyed product from a conveyed product supply unit to a conveyed product recovery unit by an air flow generated by suction. An air conveyance path is provided. And the guide which changes the conveyance direction of a conveyed product is provided in the terminal part of the air conveyance path toward the exit of the conveyed product collection part, and the guide is provided in the guide wall which changes the conveyance direction of the conveyed product It has a configuration in which a pair of side walls extended along the transport direction are disposed.

  Therefore, the conveyance object that spreads and scatters to the side only by the guide wall is guided by the side wall, and the conveyance object that scatters to the side is prevented from colliding with the inner wall surface or the like of the conveyance object recovery unit and being damaged. be able to. In addition, since the conveyed product can be guided not only by the guide wall but also by the side wall in this way, the guide force of the guide that guides the conveyed product in a predetermined direction can be improved, and the conveyed product can be reliably guided in the predetermined direction. it can.

  In addition, the cross-sectional area of the base end portion of the guide can be enlarged in the conveyance direction. In this case, the conveyance object is moved to the distal end side of the guide after the conveyance speed of the conveyance object is once reduced by the enlargement unit. Therefore, the friction generated between the guide and the transported object when the transport direction of the transported object is changed can be reduced. In addition, since the conveyance speed of the conveyance object decelerated by the enlargement unit can be further decelerated by changing the conveyance direction of the conveyance object with the guide as described above, the conveyance object after sufficiently decelerating is guided. It is possible to discharge from the container, and it is possible to more reliably prevent damage to the conveyed product.

  Also, if the tip of the guide is positioned directly above the outlet, the conveyed product can be deposited in order from directly above the outlet, so that it is easy to take out the conveyed product from the conveyed product recovery unit. it can.

  In addition, if an exhaust port is provided above the guide in the transported object recovery unit, air is exhausted from above among the air and the transported object that have flowed into the transported object recovery unit from the air transport path. Since the air and the flow of the conveyed product can be reversed in the direction toward the outlet of the conveyed product recovery unit, the air and the conveyed product can be reliably separated in the conveyed product recovery unit. it can.

  In particular, the guide of the air conveyance device according to the present invention can guide the conveyance object in a predetermined direction without scattering the conveyance object. Even if the velocity of the airflow flowing to the outside is high, it is possible to prevent the conveyed product from flowing out together with the air from the exhaust port.

  The exhaust port may be provided with an outflow prevention filter for preventing the conveyed product from flowing out of the conveyed product recovery unit from the exhaust port. With such a configuration, the air and the conveyed product are more reliably provided. And the recovery rate of the conveyed product can be further improved.

  In addition, a plurality of transported object recovery units are provided in the air transport path, and connection ports to the upstream and downstream air transport paths are formed in the transported object recovery units, respectively, and an end part of the upstream air transport path The guide is provided at a connection port communicating with the first guide, and the guide includes a first guide curved to change the transport direction and a cylindrical second guide made of a straight pipe. The connection with the terminal portion of the air conveyance path can be selectively switched between the first guide and the second guide.

  In other words, each of the transported material collection units is provided with the first guide and the second guide for guiding the transported material flowing in from the air transport path to the next air transport path, and these two types can be switched. By switching the guides, the transport object collection unit that actually receives and recovers the transported object is changed among the plurality of transported object recovery units while sharing the transported object supply unit, and the transported object is changed to a different location. It is possible to selectively carry air. Moreover, in this case as well, it is possible to prevent damage to the conveyed product.

  Further, in this case, it is preferable that the connection port of the downstream air conveyance path can be closed in conjunction with the switching operation for connecting the first guide to the terminal portion of the upstream air conveyance path. That is, when one transported object collection unit is selected, the air for sucking the transported product does not leak into another transported product recovery unit located on the downstream side of the transported product recovery unit, so that efficient storage by air transport can be performed.

  Hereinafter, specific embodiments of the air conveyance device according to the present invention will be described with reference to the drawings. In the drawings used below, white arrows indicate the flow of the conveyed product, and black arrows indicate the flow of the air.

  FIG. 1 is an overall explanatory view of an air transfer device A1 which is an embodiment of an air transfer device according to the present invention. As shown in the figure, an air conveyance device A1 of the present embodiment includes a conveyance object supply unit 1, an air conveyance path 2 that conveys a conveyance object a supplied from the conveyance object supply unit 1, and an air conveyance path 2 A suction mechanism 16 for generating an air flow therein, an air supply unit 3 for supplying air to the air transport path 2, and a transported object recovery for receiving and recovering a transported object a transported by air through the air transport path 2 Part 4.

  The conveyed product supply unit 1 is provided with a supply hopper 5 for supplying the accommodated conveyed product a to the air conveyance path 2, and the lower end of the supply hopper 5 is the starting end of the air conveyance path 2 formed in a cylindrical shape. It communicates with the top wall of part 2a. This communicating portion serves as a conveyed product supply port 6 for supplying the conveyed product a to the air conveyance path 2, and a shutter 7 for opening and closing the conveyed product supply port 6 is slidable in the conveyed product supply port 6. It is attached to.

  The shutter 7 is a flat plate having an opening at the center. When the shutter 7 slides toward the start end 2a side of the air conveyance path 2, the opening overlaps the conveyed product supply port 6 vertically. The conveyed product supply port 6 is opened. On the other hand, when the shutter 7 slides toward the end portion 2b of the air conveyance path 2 and the opening does not overlap the conveyance object supply port 6, the conveyance object supply port 6 is closed. Thus, the opening width of the conveyed product supply port 6 is adjusted by the shutter 7.

  The air conveyance path 2 is formed in a cylindrical shape having openings at both ends, and an end opening on the start end 2a side becomes an entrance / exit 8 of an air supply pipe 10 to be described later, while an end opening on the end 2b side is The conveyed product a that has been conveyed by air becomes the inlet 9 into which the conveyed product collection unit 4 flows. In the following description, the start end 2a side of the air conveyance path 2 is referred to as upstream, and the end 2b side is referred to as downstream.

  The air supply unit 3 includes an air supply pipe 10 capable of moving forward and backward through the inlet / outlet 8 of the air transfer path 2 and moving in and out of the air transfer path 2 and a cylinder 11 that drives the air supply pipe 10 to move forward and backward. The air supply pipe 10 is formed in a cylindrical shape with a tip opening, and the opening becomes an air supply port 12. Further, the cylinder 11 is attached to the base end portion of the air supply pipe 10, an outside air intake port 13 is provided on the peripheral wall of the air supply pipe 10, and a suction pump or the like of the suction mechanism 16 is driven, for example. Thus, outside air can be taken in and air flow can be generated in the air conveyance path 2. When the air supply pipe 10 enters the inside of the air conveyance path 2, the air supply pipe 10 enters from the front end side provided with the air supply port 12, while when it retreats, the air supply path 10 is completely up to the front end part. I am trying to leave outside of No.2.

  Further, an interlocking piece 7a extended from the shutter 7 is attached to the air supply pipe 10, and when the air supply pipe 10 advances in the direction of the end portion 2b of the air conveyance path 2, the shutter 7 also conveys the air in conjunction therewith. It slides in the direction of the terminal end 2b of the path 2, and the opening overlaps the conveyed product supply port 6 as described above. On the other hand, when the air supply pipe 10 is retracted in the direction of the start end 2a of the air conveyance path 2, the shutter 7 is also slid in the direction of the start end 2a of the air conveyance path 2, and its opening is the conveyed product supply port 6 And move away from the overlapping position. As described above, in this embodiment, the air supply pipe 10 and the shutter 7 are interlocked and connected so that the air supply pipe 10 moves forward and backward just below the conveyed product supply port 6 as the shutter 7 is opened and closed. Yes.

  The conveyed product collection unit 4 includes a receiving hopper 14 in communication with the terminal end 2b of the air conveying path 2, and the receiving hopper 14 has an inlet 9 in the air conveying path 2 connected to the receiving hopper 14 inside. A collection guide 15 that guides and collects the conveyed product a that has flowed into the interior is stored. In addition, a suction mechanism 16 for sucking air inside the air conveyance path 2 and the receiving hopper 14 is communicated and connected to the ceiling portion that forms the upper end of the receiving hopper 14 above the collection guide 15 via the exhaust pipe 18. ing. On the other hand, the lower end portion of the receiving hopper 14 is provided with an outlet for the conveyed product a from the receiving hopper 14 to the outside, and a rotary valve 17 is provided at the outlet.

  The transported article collection unit 4 is a configuration that also serves as a gist of the present invention, and will be described in further detail with reference to FIGS. 2 and 3. 2A and 2B are explanatory views of the conveyed product collection unit 4 in the air transfer device A1, wherein FIG. 2A is an explanatory view in front sectional view, and FIG. 2B is an explanatory view in side sectional view. FIG. 3 is a perspective view of the collection guide 15 in the air conveyance device A1.

  As shown in FIG. 2 (a), the receiving hopper 14 is connected to the air conveying path 2 at the upper position of the side wall, and the side wall 21 below the communicating portion of the air conveying path 2 is connected to the receiving hopper 14. Inclined toward the rotary valve 17 provided at the lower end portion of 14. Further, an exhaust port 19 communicating with the exhaust pipe 18 is provided at the upper end portion of the receiving hopper 14, and an outflow prevention filter 20 that prevents the conveyed product a from flowing out from the exhaust port 19 is provided inside the receiving hopper 14. The air conveying path 2 is disposed above the communicating portion. In the following, the inclined side wall of the receiving hopper 14 on the side where the air conveyance path 2 is communicated is referred to as the downstream side wall 21, and the vertical side wall facing the downstream side wall 21 is referred to as the upstream side wall 22. In FIG. 2B, reference numeral 31 denotes a motor for driving the rotary valve 17.

  The collection guide 15 according to the present embodiment is integrally connected to a terminal portion of the air conveyance path 2 that communicates with the receiving hopper 14, and is connected to the rotary valve 17 from a base end portion attached to the air conveyance path 2. The leading end side is curved downward to the leading end located immediately above, so that the transport path of the transported object a can be changed to a substantially right angle. That is, as shown in FIG. 2, the collection guide 15 has a distal end portion disposed in the opening range of the communication portion 17 a where the rotary valve 17 serving as an outlet communicates with the receiving hopper 14. A downstream side wall 21 of the receiving hopper 14 inclined obliquely toward the valve 17 is disposed.

  The collection guide 15 has a substantially bay-shaped guide wall 15a that changes the conveyance direction of the conveyed product a from the horizontal direction to the vertical direction, and extends in an arc shape from both ends of the guide wall 15a. From the pair of side walls 15b, 15b having a predetermined height extending in a cross-section, it is formed in a substantially bowl shape having an arc shape in cross section.

  The collection guide 15 can be formed by a simple process of bending the circular tube and notching the inner portion thereof, or notching the inner portion of the circular tube and then bending the circular tube. Therefore, although it is the collection guide 15 including not only the guide wall 15a but also the side walls 15b and 15b formed in an ear shape, it can be produced at low cost without taking time and effort. Further, if the collection guide 15 is created by notching the circular tube in this way, an arcuate guide surface in which the guide surface of the guide wall 15a and the guide surfaces of the side walls 15b and 15b are continuous is formed. The conveyed product a guided by 15b and 15b can be naturally moved toward the guide wall 15a along the guide surface, and the conveyed product a can be guided more smoothly.

  The guide wall 15a and the side walls 15b and 15b can be formed not only in a circular arc shape continuous with each other as described above but also in a flat plate shape.

  Further, in the collection guide 15 of the present embodiment, the width of the guide wall 15a is constant, and the side walls 15b and 15b connected to both ends of the guide wall 15a are also substantially parallel to each other. The width of the wall 15a is widened in the transport direction, and both side walls 15b, 15b are gradually separated in the transport direction, or conversely, the width of the guide wall 15a is narrowed in the transport direction. Alternatively, the side walls 15b and 15b may be structured so as to gradually approach in the transport direction.

  Further, as described above, the collection guide 15 is positioned within the opening range of the communication portion 17a between the rotary valve 17 serving as the outlet and the receiving hopper 14 as described above, but in this embodiment, the collection guide 15 The communication portion 17a is located on the downstream side of the center line t that bisects the communication portion 17a into an upstream side and a downstream side (right side and left side in FIG. 2). This corresponds to the fact that the conveyed product a released from the tip of the collection guide 15 moves to the upstream side (the right side in FIG. 2) with respect to the collection guide 15 while falling. The object a can be evenly deposited on the upstream side and the downstream side around the center line t.

  On the other hand, the base end portion of the collection guide 15 is an enlarged portion 23 whose cross-sectional area is enlarged in the transport direction.

  In the present embodiment, after the conveying speed of the conveyed product a is once reduced by the enlargement unit 23, the conveyed product a is moved along the collection guide 15 to change the conveying direction of the conveyed product a. .

  Therefore, by enlarging the cross-sectional area of the base end portion of the guide wall 15a in the conveyance direction, the conveyance speed of the conveyance object a is reduced at this expansion part and released from the collection guide 15, so that damage to the conveyance object a is caused. Can be prevented. Furthermore, in this embodiment, after the speed is reduced by the enlargement portion, the collection guide 15 further changes the transport direction of the transported object a, so that the transport speed of the transported object a is sufficiently reduced. Damage can be prevented more reliably.

  In the present embodiment, not only the base end portion of the collection guide 15 but also the terminal portion 2b of the air conveyance path 2 connecting the collection guide 15 is an enlarged portion 23 having an enlarged sectional area. In this way, the conveyed product a is decelerated more reliably.

  The air conveyance device A1 of the present embodiment has the above-described configuration, and the operation of the air conveyance device A1 will be described with reference to FIGS. 1, 4, and 5. FIG. 4 and 5 are explanatory diagrams showing the flow of the conveyed product a and the air in the conveyed product collection unit 4.

  When the conveyed product a is conveyed by air, it operates as follows.

  When air is not being transported, the air supply pipe 10 is drawn out of the air transport path 2 by the cylinder 11, and the shutter 7 linked to the air supply pipe 10 is also moved to the start end 2a side of the air transport path 2. The conveyed product supply port 6 is closed.

  As shown in FIG. 1, when the cylinder 11 is driven and the air supply pipe 10 is made to enter the inside of the air conveyance path 2, the shutter 7 is also slid and conveyed toward the end portion 2b of the air conveyance path 2 at the same time. The object supply port 6 is opened. Accordingly, the conveyed product a is supplied to the air conveying path 2 from the receiving hopper 14 through the conveyed product supply port 6.

  Furthermore, when the suction mechanism 16 is driven to supply air from the air supply pipe 10 to the inside of the air conveyance path 2 and an airflow is generated toward the end portion 2b of the air conveyance path 2, the conveyance object a It is supplied to the inside of the air conveyance path 2 as needed, and the conveyed product a is conveyed in the direction of the terminal end 2b of the air conveyance path 2.

  On the other hand, in the conveyed product collection unit 4 at the air conveyance destination, when the air conveyance is started, as shown in FIG. 4, the inlet 9 of the air conveyance path 2 passes through the collection guide 15 and enters the inside of the receiving hopper 14. The conveyed product a flows in. At this time, the terminal end 2b of the air conveyance path 2 and the base end of the collection guide 15 continuous to the terminal end 2b are the enlarged portions 23 having a larger cross-sectional area than other portions as described above. When passing through the enlarged portion 23, the transport speed of the transported object a is decelerated, and the decelerated transported object a moves along the collection guide 15. Therefore, friction with the collection guide 15 when the conveyed product a moves along the collection guide 15 can be reduced.

  Moreover, when the conveyed product a moves along the collection guide 15 as described above, the collection guide 15 not only has the guide wall 15a that changes the conveyance direction of the conveyed product a from the horizontal direction to the vertical direction as described above. Since the side walls 15b and 15b are provided at both ends of the guide wall 15a, the conveyed product a can be stably guided without being scattered, and the scattered conveyed product a is the inner wall surface of the receiving hopper 14. It is possible to prevent the conveyed product a from being damaged by colliding with the recovery guide 15 itself.

  Further, as described above, the collection guide 15 is opened from the guide wall 15a and the side walls 15b and 15b in an arc shape when viewed in cross section so that the lower part is opened. In the air conveyance path 2, the air that has moved together with the conveyed product a flows out from the open portion of the collection guide 15 and is sucked by the suction mechanism 16 from the exhaust port 19 at the upper end of the receiving hopper 14. Exhaust to the outside of the receiving hopper 14.

  Thus, in the collection guide 15, air is exhausted outward without flowing along with the conveyed product a, so the flow rate of the conveyed product a decelerated by the air conveyance path 2 and the enlarged portion 23 of the collection guide 15 is increased. Furthermore, it can decelerate.

  In addition, in this embodiment, since the outflow prevention filter 20 for preventing the outflow of the conveyed product a is provided at the exhaust port 19, when the air flows out from the exhaust port 19, the air is exhausted to the conveyed product a together with the air. Flowing out of the mouth 19 can be prevented.

  Further, when the conveyed product a that has moved along the collection guide 15 reaches the tip of the collection guide 15, it is discharged from the collection guide 15, falls downward, and accumulates under the receiving hopper 14. At this time, since the conveyed product a falling from the collection guide 15 is sufficiently decelerated, the conveyed product a does not collide with the inner wall surface of the receiving hopper 14 and be damaged.

  In addition, the conveyed product a deposited in the lower part of the receiving hopper 14 in this way is appropriately taken out of the receiving hopper 14 through the rotary valve 17, but in this embodiment, the tip of the collection guide 15 is conveyed. Since it is located directly above the rotary valve 17 serving as an outlet for the object a, when the conveyed object a is deposited on the lower portion of the receiving hopper 14, the conveyed object a is deposited in order from directly above the rotary valve 17. It will be.

  Moreover, a downstream side wall 21 of the receiving hopper 14 that is inclined obliquely toward the rotary valve 17 is disposed below the collection guide 15, and before a part of the conveyed product a reaches the front end of the collection guide 15. Even if it is separated from the collection guide 15 and falls downward, the conveyed product a can be slid down to the rotary valve 17 along the inclined surface of the downstream side wall 21.

  Thus, in the conveyed product collection part 4 of this embodiment, the conveyed product a which flowed into the inside of the receiving hopper 14 is efficiently collected just above the rotary valve 17 and the conveyed product a can be easily taken out from the receiving hopper 14. Can do.

  Further, as shown in FIG. 5A, the receiving hopper 14 can store the received transported object a. Even in this case, the collection guide 15 is composed of the guide wall 15a and the side walls 15b and 15b, and the lower part is opened. Therefore, the conveyed product a can be accumulated up to the inside of the collection guide 15, and more conveyed items can be accumulated. a can be stored in the receiving hopper 14. Even when air conveyance is started again from such a storage state, as shown in FIG. 5B, if the conveyed product a is taken out from the receiving hopper 14, it is clogged inside the collection guide 15 accordingly. Since the conveyed product a moves to the outside of the collection guide 15, the conveyed product a does not remain inside the collection guide 15 while being clogged, and air conveyance can be started promptly. In the present embodiment, since the collection guide 15 is formed in an arc shape when viewed in cross section, the conveyed product a on the portion extending substantially horizontally does not slide and does not remain.

  In the air transport apparatus A1 described above, the transported object recovery unit 4 is provided only at one end part 2b of the air transport path 2, but the transported object recovery part 4 is provided only at the end part 2b of the air transport path 2. Alternatively, it can be provided in the middle of the air conveyance path 2. That is, a plurality of transported object collection units 4 and 4 ′ are provided in the air transport path 2, and a connection port to each of the upstream and downstream air transport paths 2 is formed in each transported object recovery unit 4 (4 ′). The guide can be provided at a connection port that communicates with a terminal portion of the upstream air conveyance path 2.

  An air conveyance device A2 according to another embodiment in which a conveyed product recovery unit 4 ′ is also provided in the middle of the air conveyance path 2 will be described with reference to FIGS. The air transport device A2 has the same configuration as the air transport device A1 shown in FIGS. 1 to 5 except that a transported material collection unit 4 ′ is provided in the middle part of the air transport path 2, so that air transport is performed. The description of the same configuration as that of the device A1 is omitted.

  FIG. 6 is a front sectional view of an air conveying apparatus A2 as another embodiment, FIG. 7 is an explanatory view of a side sectional view of the air conveying apparatus A2 as another embodiment, and FIG. 8 is another embodiment. FIG. 10 is an explanatory view of a guide in the air conveyance device A2 in perspective.

  As shown in FIG. 6, an air conveyance device A2 as another embodiment is provided with a plurality of conveyance object recovery units 4 ′ in the middle of the air conveyance path 2, and the air conveyance path is formed by the conveyance object recovery unit 4 ′. 2 is divided into a plurality.

  Each transported object recovery unit 4 ′ is provided with a receiving hopper 14, similar to the transported material recovery part 4 provided at the terminal end 2 b of the air transport path 2, and is located above the downstream side wall 21 of the receiving hopper 14. The downstream air conveyance path 2 communicates with the upstream side wall 22, and the upstream air conveyance path 2 communicates with the upper portion of the upstream side wall 22. The opening of the air conveyance path 2 communicating with the downstream side wall 21 of the receiving hopper 14 serves as an inlet 9 for the conveyed product a from the air conveyance path 2 to the receiving hopper 14, and communicates with the upstream side wall 22 of the receiving hopper 14. The opening portion of the air conveyance path 2 becomes the outlet 24 of the conveyed product a from the receiving hopper 14 to the air conveyance path 2.

  In the conveyed product collection unit 4 ′, the collection guide 15 is provided as a single unit separated from the air conveyance path 2, and the tip of the collection guide 15 is rotatably inserted into the upstream side wall 22 of the receiving hopper 14. The recovery guide 15 as the first guide is rotated with the rotary shaft 25 as a fulcrum.

  Moreover, the collection guide 15 is provided with a cylindrical passage guide 26 as a second guide comprising a straight pipe that guides the conveyed product a flowing in from the downstream air conveyance path 2 to the subsequent upstream air conveyance path 2. The passage guide 26 is also rotated by rotating the collection guide 15 via the connecting rod 27, and the guide connected to the air conveyance path 2 is between the two types of guides 15 and 26. I try to switch.

  That is, if the proximal end opening of the collection guide 15 is made to face the opening of the downstream air conveyance path 2 of the air conveyance path 2 communicating with the reception hopper 14, that is, the inlet 9 to the reception hopper 14, If the collection guide 15 is connected to the air conveyance path 2 and conversely the base end opening of the passage guide 26 is opposed to the inlet 9, the opening of the upstream air conveyance path 2, that is, the receiving hopper 14 is simultaneously provided. The end opening of the passage guide 26 faces the outlet 24 from the air passage 24 so that the passage guide 26 is connected to the air conveyance path 2.

  As described above, in this embodiment, the collection guide 15 is attached to the receiving hopper 14 through the rotation shaft 25 so as to be rotatable using the curved shape of the collection guide 15, and the passage guide 26 is further attached to the collection guide 15. Since it is attached, it is not necessary to provide a member for supporting the collection guide 15 and the passage guide 26 in addition to the rotary shaft 25, and the support structure for both the guides 15 and 26 can be simplified.

  By the way, in order to switch between the two types of guides 15 and 26, an operation lever 28 is attached to an end portion of the rotating shaft 25 to which the collection guide 15 is attached and which protrudes to the outside of the receiving hopper 14. By rotating the lever 28, the rotary shaft 25 is rotated so that the guides 15 and 26 connected to the air conveyance path 2 can be easily switched. The operation lever 28 is manually operated in the present embodiment, but may be operated electrically.

  Further, in the present embodiment, the exhaust pipe 18 extending from the exhaust port 19 of each of the transported article collection units 4 and 4 ′ is joined together with the main exhaust pipe 29 having the suction mechanism 16 connected to the terminal portion. The exhaust pipe 18 is provided with a switching valve 30 for switching whether to allow air to flow to the main exhaust pipe 29, respectively. With such a configuration, the switching valve 30 for the exhaust pipe 18 of the transported material recovery unit downstream of the transported material recovery unit that is actually the transport destination of the transported product a among the transported product recovery units 4 and 4 ′. Is closed, and the switching valve 30 for the exhaust pipe 18 of the upstream-side transported material recovery unit is opened, the transported product recovery unit downstream of the transported product recovery unit serving as the transport destination has the receiving hopper 14 While it is possible to prevent the air inside from being sucked, the air inside the receiving hopper 14 is sucked in the transported material recovery unit serving as the transport destination and the transported material recovery unit upstream of the transported material recovery unit. Can be.

  The air conveying apparatus A2 of the present embodiment has the above-described configuration. When the conveyed product a is conveyed by air, first, which of the plurality of conveyed product recovery units 4 and 4 ' It is determined whether or not the transfer destination is to be selected, and the guides 15 and 26 of each transported article collection unit are switched accordingly, and the switching valve 30 of the exhaust pipe 18 is opened and closed.

  For example, in FIG. 6, of the two transported object collection units 4 ′ and 4 ′ shown in the drawing, the transported object collection unit 4 ′ on the right side is the transport destination of the transported object a, and the transported object that is the transport destination In the recovery unit 4 ′, the recovery guide 15 of the two types of guides 15 and 26 is connected to the air conveyance path 2, and the switching valve 30 of the exhaust pipe 18 is opened. Although not shown, the switching valve 30 of the exhaust pipe 18 is also opened in the transported material collection units 4 ′ and 4 upstream from the transported product recovery unit 4 ′ serving as the transport destination.

  On the other hand, in the left-side transported object recovery unit 4 ′ that is downstream of the transported object recovery unit 4 ′ that is the transport destination, the passage guide 26 of the two types of guides is connected to the air transport path 2 and the exhaust pipe The 18 switching valves 30 are closed. Here, only one transported object recovery unit 4 ′ downstream from the transported material recovery unit 4 ′ serving as the transport destination is illustrated, but downstream of the transported material recovery unit 4 ′ serving as the transport destination. Each of the transported material collection units 4 ′ has the guides 15 and 26 and the switching valve 30 switched as in the transported product collection unit 4 ′ shown on the left side of FIG.

  1 to 5, when the cylinder 11 is driven to cause the air supply pipe 10 to enter the inside of the air conveyance path 2, the shutter 7 is also at the end of the air conveyance path 2. 2b is slid, the conveyed product supply port 6 is opened, and the conveyed product a is supplied from the supply hopper 5 to the air conveying path 2. When the suction mechanism 16 is driven to generate an air flow toward the end portion 2b of the air conveyance path 2, the conveyed product a is conveyed along with the air flow toward the end portion 2b of the air conveyance path 2.

  On the other hand, the conveyed product a conveyed on the air conveyance path 2 passes through the other conveyed product collection unit 4 ′ provided in the middle thereof until reaching the conveyed product collection unit 4 ′ serving as the conveyance destination. At this time, in the transported object recovery unit 4 ′ provided downstream of the transported object recovery unit 4 ′ that is the transport destination, like the transported object recovery unit 4 ′ on the left side of FIG. Since the passage guide 26 is connected to the air conveyance path 2 and the switching valve 30 of the exhaust pipe 18 is closed, the air inside the conveyed product collection unit 4 ′ is not exhausted from the exhaust pipe 18. The air that has flowed into the receiving hopper 14 from the air conveyance path 2 flows into the upstream air conveyance path 2 through the passage guide 26, and along with this air flow, the conveyed product a also passes from the downstream air conveyance path 2 to the passage guide. 26 flows into the upstream air conveyance path 2.

  Further, when the transported object a reaches the transported object recovery unit 4 ′ serving as the transport destination, the recovery guide 15 in the transported object recovery unit 4 ′ has the air guide like the transported object recovery unit 4 ′ on the right side of FIG. Since the switching valve 30 of the exhaust pipe 18 is connected to the transport path 2 and the air inside the transported material collection unit 4 ′ is exhausted from the exhaust pipe 18, the downstream air transport path 2 is connected. The air that has flowed into the receiving hopper 14 from the exhaust pipe 18 is exhausted from the exhaust pipe 18, and the conveyed product a that has flowed into the receiving hopper 14 together with the air descends along the collection guide 15 to the rotary valve 17. Will fall and be recovered.

  Thus, in this embodiment, in addition to the conveyed product recovery unit 4 provided at the terminal end 2b of the air conveyance path 2, a plurality of conveyed product recovery units 4 ′ are provided in the middle of the air conveyance path 2, and the plural Since the transported object a can be received and recovered by any of the transported object collection units 4 and 4 ', the transport destination of the transported object a can be appropriately changed according to the situation. In addition, when the receiving hopper 14 is filled with the transported material a received by the first transported material recovery unit, the transport destination of the transporting destination a is changed and the second transported material recovery unit again The conveyed product a can be sequentially stored in a plurality of receiving hoppers 14 by receiving the conveyed product a, and the storage capacity of the conveyed product a in the entire air conveying apparatus A2 can be increased.

  As still another embodiment, the guide may be configured as shown in FIGS. 9 and 10, the same components as those shown in FIGS. 1 to 8 are denoted by the same reference numerals, and description thereof is omitted here.

  As described above, the guide according to the present embodiment is a first guide curved to change the transport direction of the transported object a, that is, a collection guide 15 and a cylindrical second guide made of a straight pipe, That is, a passage guide 26 is provided, and the connection between the collection guide 15 and the passage guide 26 can be selectively switched between the end portion 2b of the air conveyance path 2 and the conveyance object supply portion 1 is shared. In the desired transported object recovery unit 4 (4 ′), the transported object a can be selectively accommodated while preventing the damage, and the recovery guide 15 is connected to the upstream air transport path. The connection port of the downstream air conveyance path 2 can be closed in conjunction with the switching operation for connection with the second terminal portion 2b. Here, the connection port is an opening of the air conveyance path 2 communicating with the upstream side wall 22 of the receiving hopper 14, and the flow of the conveyed product a from the receiving hopper 14 to the air conveying path 2 as described above. The outlet 24 is indicated.

  More specifically, as shown in FIG. 9, one end of a closing plate 40 having a region where the outlet 24 can be closed is connected to the terminal opening 26a of the passage guide 26. When the air conveyance path 2 and the collection guide 15 are in communication, the closing plate 40 closes the outlet 24 as shown in FIG. Therefore, for example, when the guide according to the present embodiment is disposed in the conveyed product collection unit 4 ′ shown in FIG. 6, when the suction mechanism 16 is operated in a state where the closing plate 40 closes the outlet 24, Air in the receiving hopper 14 does not leak outside through the outlet 24, the suction efficiency through the exhaust pipe 18 is improved, and the conveyed product a can be smoothly sucked and transferred into the receiving hopper 14. It becomes.

  Also in this case, since the conveyed product a is sufficiently decelerated by the collection guide 15, the conveyed product a does not collide with the inner wall surface of the receiving hopper 14 and be damaged.

  On the other hand, when the operation lever 28 is operated to connect the passage guide 26 to the upstream air conveyance path 2 as shown in FIG. 9B, the closing plate 40 is separated from the outlet 24 and the passage guide 26 is removed. Thus, the upstream air conveyance path 2 and the downstream air conveyance path 2 communicate with each other.

  As a modification of the present embodiment, the configuration shown in FIG.

  This is because the collection guide 15 and the passage guide 26 are connected in parallel by the connecting rod 27, but the upper half portion of the substantially fan-shaped connection plate 41 gradually widened from the base portion to the upper portion. Two openings 42, 43 are formed side by side, and the collection guide 15 is connected to the opening 43 on one side (right side in the figure), and each base end opening of the passage guide 26 is connected to the opening 42 on the other side (left side in the figure). is doing. A fan-shaped closing plate 44 having an opening through which the terminal opening 26a of the passage guide 26 communicates is connected. The fan-shaped closing plate 44 is substantially the same shape as the connecting plate 41, and the area surface facing the collection guide 15 is a flat plate shape so as to cover the downstream outlet 24 and be closed. Reference numeral 45 denotes a rotating shaft provided at the approximate center of the lower half of the connecting plate 41 and the fan-shaped closing plate 44, and is connected to an operating lever (not shown).

  With this configuration, as shown in FIG. 10 (a), when the upstream air conveyance path 2 and the collection guide 15 are in communication, the fan-shaped closing plate 44 closes the outlet 24. Similarly to the configuration, since the fan-shaped closing plate 44 closes the outlet 24, when the suction mechanism 16 is operated, the air in the receiving hopper 14 does not leak to the outside from the outlet 24, and passes through the exhaust pipe 18. The suction efficiency is improved, and the conveyed product a can be smoothly sucked and conveyed into the receiving hopper 14.

  In this case as well, since the conveyed product a is sufficiently decelerated by the collection guide 15, the conveyed product a does not collide with the inner wall surface of the receiving hopper 14 and be damaged.

  On the other hand, when the operation lever is operated to connect the passage guide 26 to the upstream air conveyance path 2 as shown in FIG. 10B, the fan-shaped closing plate 44 is separated from the outlet 24 and the passage guide 26 The upstream side air conveyance path 2 and the downstream side air conveyance path 2 communicate with each other via the pipe, and the conveyed product a passes through the receiving hopper 14 having this guide and receives the receiving hopper 14 of the downstream conveyed product collection unit 4. It will be conveyed to.

  When the guide structure shown in FIG. 9 or FIG. 10 is adopted, an air transfer device A3 as shown in FIG. 11 can be obtained.

  That is, in the previous embodiment, as shown in FIG. 6, the main exhaust pipe 29 in which the exhaust pipe 18 is extended from the exhaust port 19 of each transported article collection section 4 ′ and the suction mechanism 16 is continuously provided at the end portion. All of them are joined together and each exhaust pipe 18 is provided with a switching valve 30. However, here, as shown in FIG. 11, the main exhaust pipe 29 is abolished, and the exhaust port of each conveyed product collection section 4 ′ is removed. The downstream end of the exhaust pipe 18 'extended from 19 is connected to the air transport path 2' on the downstream side of the transported object recovery unit 4 ', and is provided in the transported material recovery part 4' at the final end. The suction mechanism 16 is connected to the air conveyance path 2 ′ on the side through the chamber 100. Reference numeral 101 denotes a connecting pipe that communicates the chamber 100 and the suction mechanism 16, and reference numeral 200 denotes a conveyed product storage tank that is attached to the outside of the receiving hopper 14 via a rotary valve 17.

  For example, in FIG. 11, the left-hand conveyed object collection unit 4 ′ is the first conveyed object collection unit 4 ′-1, and the downstream-side air conveyance path 2 ′ connected thereto is the first downstream-side air conveyance path 2 ′. −1, the central transported object recovery unit 4 ′ is the second transported object recovery unit 4′-2, and the downstream air transport path 2 ′ connected thereto is the second downstream air transport path 2′-2. The right end transported material recovery unit 4 ′ is the third transported material recovery unit 4′-3, and the downstream air transport path 2 ′ connected thereto is the third downstream air transport path 2′−. 2. Further, the exhaust pipe 18 'of each transported material collection unit 4' is defined as a first exhaust pipe 18'-1, a second exhaust pipe 18'-2, and a third exhaust pipe 18'-3.

  Then, the outlet 24 is closed by the guide closing plate 40 (or the fan-shaped closing plate 44) in the transported material recovery section 4 ′ to accommodate the transported material a, and the recovery guide 15 is connected to the upstream air transport path 2. On the other hand, the passage guides 26 are respectively connected to the upstream air conveyance path 2 in the other conveyed product collection section 4 ′.

  For example, when the conveyed product a is accommodated in the first conveyed product recovery unit 4 ′, the closing plate 40 (or the fan-shaped closed plate 44) of the guide provided in the first conveyed product recovery unit 4′-1. Since the outlet 24 is closed and the guides in the second transported product recovery unit 4′-2 and the third transported product recovery unit 4′-3 connect the passage guides 26 to the upstream air transport path 2, respectively. is there. When the suction mechanism 16 is operated in such a state, the air flows from the upstream air conveyance path 2 to the collection guide 15 (see FIG. 6) in the first conveyance object collection unit 4′-1 → the exhaust port 19 → 1st exhaust pipe 18'-1-> 1st downstream air conveyance path 2'-1-> passage guide 26 (refer to Drawing 6) in 2nd conveyance thing recovery part 4'-2-> 2nd downstream side Air conveyance path 2′-2 → passing guide 26 (see FIG. 6) in the third conveyance object collection unit 4′-3 → third downstream air conveyance path 2′-3 → chamber 100 → communication pipe 101 As the air is sucked, the conveyed product a is accommodated in the first conveyed product collection unit 4′-1 from the collection guide 15 in the first conveyed product collection unit 4′-1. Become.

  Further, when the transported object a is accommodated in the second transported object recovery unit 4′-2, the guide closing plate 40 (or the fan-shaped closing plate) provided in the second transported object recovery unit 4′-2. 44), the outlet 24 is closed, and the guides in the first transported article collection unit 4′-1 and the third transported product collection unit 4′-3 pass the passage guide 26 on the upstream side air transport path 2 ′. Keep connected. When the suction mechanism 16 is operated in such a state, the air flows from the upstream air conveyance path 2 to the passage guide 26 (see FIG. 6) in the first conveyance object collection unit 4′-1 to the first downstream. Side air conveyance path 2′-1 → collection guide 15 (see FIG. 6) in the second conveyed product collection unit 4′-2 → exhaust port 19 → second exhaust pipe 18′-2 → second downstream side Air conveyance path 2′-2 → passing guide 26 (see FIG. 6) in the third conveyance object collection unit 4′-3 → third downstream air conveyance path 2′-3 → chamber 100 → communication pipe 101 As the air is sucked, the conveyed product a is accommodated in the second conveyed product collection unit 4′-2 from the collection guide 15 in the second conveyed product collection unit 4′-2. Become. The same procedure may be used when the conveyed product a is accommodated in the third conveyed product recovery unit 4'-3.

  As described above, when the guide structure in which the connection between the collection guide 15 and the passage guide 26 is selectively switchable with the terminal portion 2b of the air conveyance path 2 is employed, the suction is performed with the air conveyance path 2 ′. By directly connecting to the mechanism 16, the exhaust pipe 29 is unnecessary and the switching valve 30 is also unnecessary, so that the configuration of the air transport device A3 can be simplified. In addition, according to the example mentioned above, if each downstream air conveyance path 2 'connected to the upstream conveyance thing collection | recovery part 4' is considered from the downstream conveyance thing collection | recovery part 4 ', the upstream air conveyance path 2'. It becomes.

  Further, if the conveyed product collection unit 4 ′ is configured as a unit as shown in FIG. 12, it can be freely connected in a desired number. Further, after the construction as the air transport device A3, it is easy to add the transported object collection unit 4 '.

  As described above, according to the present embodiment, the transported object collection unit 4 ′ is connected to the upstream air transport path 2 and the downstream air transport path 2 ′ through the connection ports, respectively, and the transported object. The tip of the exhaust pipe 18 ′ extended from the exhaust port 19 formed in the recovery part 4 ′ is connected to the downstream air conveyance path 2 ′ and connected to the terminal end of the upstream air conveyance path 2. A guide provided with a first guide (for example, a collection guide 15) curved to change the transport direction and a cylindrical second guide (for example, a passage guide 26) made of a straight pipe at a connection port that communicates. The transported material recovery unit (for example, the transported material recovery unit 4 ') is configured to connect the units to each other, and the suction mechanism 16 communicates with the downstream air transport path 2' provided in the final end unit. Connected, between the first guide and the second guide An air conveyance device A3 that can selectively switch the connection with the terminal portion of the upstream air conveyance path 2 and that can block the connection port of the downstream air conveyance path 2 'in conjunction with the switching operation. Can be realized.

  As mentioned above, although this invention has been demonstrated through each embodiment, this invention is not limited to each said embodiment, In the range which does not deviate from a claim, it can change suitably.

1 is an overall explanatory diagram of an embodiment of an air conveyance device according to the present invention. It is explanatory drawing of the conveyed product collection | recovery part in the embodiment, (a) is explanatory drawing by front sectional view, (b) is explanatory drawing by side sectional view. It is explanatory drawing by the isometric view of the guide in the embodiment. It is explanatory drawing which shows the conveyed product and the flow of air in the conveyed product collection | recovery part of the embodiment. It is explanatory drawing which shows the conveyed product and the flow of air in the conveyed product collection | recovery part of the embodiment. It is explanatory drawing by front sectional view of the air conveying apparatus as other embodiment. It is explanatory drawing by the side surface sectional view of the air conveying apparatus as other embodiment. It is explanatory drawing by the perspective view of the guide in the air conveying apparatus as other embodiment. It is explanatory drawing of the guide in the air conveying apparatus as further another embodiment. It is explanatory drawing of the guide which concerns on the modification of the said other embodiment. It is explanatory drawing which shows an example of the air conveying apparatus which concerns on other embodiment. It is explanatory drawing of 1 unit which comprises the said air conveying apparatus.

Explanation of symbols

A1 to A3 Air conveyance device a Conveyed object 1 Conveyed object supply unit 2, 2 'Air conveyance path 3 Air supply unit 4, 4' Conveyed object recovery unit 9 Inlet
14 Receiving hopper
15 Collection guide
15a guide wall
15b side wall
17 Rotary valve
19 Exhaust port
23 Enlarged part
40 Blocking plate
41 Connecting plate
44 Fan-shaped closing plate

Claims (4)

An air conveyance device having an air conveyance path for conveying a conveyance object by an air current from a conveyance object supply unit to a conveyance object recovery unit ,
The conveyed product collection unit communicates the terminal end of the air conveyance path to the receiving hopper, and guides the conveyed product flowing into the receiving hopper from the inlet of the air conveying path toward the lower outlet in the receiving hopper. In the air transfer device that contains the guide to be recovered
The side wall of the receiving hopper connected to the air conveyance path is inclined toward the lower outlet,
The guide is integrally connected to the terminal end portion of the air conveyance path communicating with the receiving hopper, and the distal end side is lowered from the base end portion attached to the air conveyance path to the distal end portion located immediately above the outlet. And by disposing the tip portion within the opening range of the communication portion where the outlet communicates with the receiving hopper, the conveyance path of the conveyed product can be changed to a substantially right angle,
In addition, the guide is formed by opening the lower side from the guide wall that changes the conveyance direction of the conveyed product and the pair of side walls that are extended along the conveyance direction and disposed on the guide wall, and below the opened guide. In the side wall of the receiving hopper that is inclined,
An air conveyance device characterized in that a terminal end portion of an air conveyance path and a base end portion of a guide that is connected to the terminal portion and accommodated in the receiving hopper are enlarged portions whose cross-sectional area is enlarged in the conveyance direction . The conveyed object collecting unit, the guide air conveying device according to claim 1 Symbol mounting, characterized in that it comprises an upper exhaust port than. The air conveyance path is provided with a plurality of conveyance object collection sections, each of the conveyance object collection sections is formed with a connection port with each of the upstream and downstream air conveyance paths, and communicated with the terminal end of the upstream air conveyance path. The guide is provided at the connection port, and the guide includes a first guide curved to change the conveyance direction, and a cylindrical second guide made of a straight pipe. 3. The air transfer device according to claim 1, wherein the connection between the guide and the second guide is selectively switchable with a terminal portion of the air transfer path. 4. Said first guide linking with switching operation of connecting the terminal end portion of the air conveying path of the upstream, according to claim 3, characterized in that to allow closing the connection port of the downstream air transport path Air transfer device.

Images