JP5927632B2 - Horizontal screw silo - Google Patents

Description

  The present invention relates to a horizontal screw silo for loading cargo in the form of fine particles, lumps or pellets.

  In recent years, silos have been proposed in which cargoes such as powders, fine particles, lumps, and high moisture content are efficiently loaded and loaded with high cargo handling efficiency (Patent Documents 1 and 2). Such a silo is installed on land, for example, and can load cargo in a bulky state in, for example, a cylindrical cargo hold.

  However, if you do not want to excessively refine the cargo that has the property of being crushed by impact, the silo with the structure as described in Patent Documents 1 and 2 will drop the cargo especially when the drop of cargo at the time of loading is large. Therefore, it is expected that the impact when the vehicle collides with the cargo below is increased, and the cargo is cracked due to the impact, resulting in finer particles. Such a problem is a type of silo that has a horizontal screw for horizontally transporting cargo in the cargo hold and lowers and discharges the cargo in a center column provided at the center of the cargo hold. This is also a significant problem in horizontal screw silos. In other words, the normal center column has a structure in which the cargo is allowed to freely fall inside thereof, so that the cargo as described above is easily made fine by impact.

Japanese Patent Laid-Open No. 7-172586 Japanese Utility Model Publication No.57-52059

  It is an object of the present invention to provide a horizontal screw silo that can prevent excessively fine cargo that descends in a center column with a simple configuration.

  The horizontal screw silo according to the present invention has a cargo supply port in the upper part, a cargo hold having a cylindrical wall surface inside which accommodates fine, lump or pellet-like cargo, and is fixed to the center of the cargo hold. A center column that is arranged and configured to be movable below the cargo hold when the cargo falls, and is arranged at an upper position inside the cargo hold and is pivotally driven with the central axis of the cargo hold as a pivot axis And a revolving frame whose front end extends toward the wall surface, and a swivel movement with the central axis as a revolving axis, suspended from the revolving frame via a suspension wire, following the revolving motion of the revolving frame. The suspension wire is moved up and down by the winding or unwinding operation, and the cargo is transported horizontally between the central portion of the cargo hold and the wall surface to be spread and collected. A horizontal screw silo that discharges the raw material collected by the horizontal conveyance device to the outside of the cargo hold, wherein the center column is formed from a plate-like member having an opening in the center. A plurality of annular portions arranged in multiple stages along the up-down direction, and a plurality of supports arranged to extend along the up-down direction inside the opening to support the plurality of annular portions A plate and a plurality of receiving portions formed between the plurality of annular portions for carrying the cargo into the center column, wherein the plurality of support plates are arranged in the vertical direction inside the opening. It arrange | positions so that it may become a spiral shape.

  In one embodiment of the present invention, the plurality of support plates are provided with protrusions that come into contact with the cargo on the contact surface with the cargo falling in the opening.

Further, another horizontal screw silo according to the present invention includes a cargo hold having a cargo supply port at an upper portion thereof and having a cylindrical wall surface inside which accommodates a granular, lump or pellet-like cargo, and the cargo hold A center column that is fixedly arranged at the center of the cargo space and is configured to be movable below the cargo hold when the cargo falls, and a central column of the cargo hold that is arranged at an upper position inside the cargo hold. A swivel frame that is pivotally driven as an axis and has a tip extending toward the wall surface side, and is suspended from the swivel frame via a suspension wire with the central axis as a swivel axis, following the swivel operation of the swivel frame The swivel moves, moves up and down by winding or unwinding the hanging wire, transports the cargo horizontally between the center of the cargo hold and the wall surface, And a horizontal conveying device of the screw type which performs a load in the horizontal screw silo for discharging the cargo has been picked up by the horizontal conveyor unit outside the cargo hold, the center column, a plate having a central opening A plurality of annular portions arranged in multiple stages along the vertical direction, and arranged to extend along the vertical direction inside the opening to support the plurality of annular portions. A plurality of support plates, a cylindrical central member disposed in the center of the openings of the plurality of annular portions, the plurality of support plates and an outer peripheral surface being joined and extending in the vertical direction, and the plurality of annular portions And a plurality of receiving portions for carrying the cargo into the center column, and the central member is arranged at predetermined intervals in the vertical direction on an outer peripheral surface located between the plurality of receiving portions. Set in A plurality of cargo contact annular plates that come into contact with cargo falling in the opening, and among the plurality of annular portions, a predetermined one of those arranged on the upper side with respect to each cargo contact annular plate The annular portion has an extension cone having a conical section formed so as to extend obliquely downward toward the cargo contact annular plate on the opening side, and the cargo contact annular plate and the extension cone are The cargo falling in the opening is arranged so as to alternately contact in the dropping process.

  ADVANTAGE OF THE INVENTION According to this invention, the excessive refinement | miniaturization of the cargo which falls in the center column can be prevented with a simple structure.

It is sectional drawing which shows the horizontal screw type silo which concerns on the 1st Embodiment of this invention. It is A-A 'sectional drawing of FIG. It is a side perspective view which shows the center column of the horizontal screw type silo. FIG. 3 is a B-B ′ sectional view of FIG. 2. It is C-C 'expanded sectional drawing of FIG. FIG. 2 is an enlarged top view of D-D ′ in FIG. 1. FIG. 7 is an enlarged view of E-E ′ in FIG. 6. It is sectional drawing which shows a part of center column of the horizontal screw type silo which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows a part of center column of the horizontal screw type silo which concerns on the 3rd Embodiment of this invention. FIG. 10 is a cross-sectional view taken along the line F-F ′ in FIG. 9.

  Hereinafter, a horizontal screw silo according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a cross-sectional view showing a horizontal screw silo according to a first embodiment of the present invention. 2 is a cross-sectional view taken along line AA ′ of FIG. 1, FIG. 3 is a side perspective view showing a center column of a horizontal screw silo, FIG. 4 is a cross-sectional view taken along line BB ′ of FIG. It is CC 'expanded sectional view of. 6 is an enlarged top view taken along the line DD ′ of FIG. 1, and FIG. 7 is an enlarged view taken along the line EE ′ of FIG. As shown in FIG. 1, the horizontal screw silo 10 is a silo capable of loading cargo C having a property of being crushed by impact such as fine particles, lumps, pellets, etc., and is formed in a cylindrical shape, for example.

  As shown in FIG. 1, the horizontal screw silo 10 includes a cylindrical cargo hold 20 having a cylindrical shape, for example. A center column 100 that extends in the vertical direction is fixed to the center of the cargo hold 20, and a swivel cylinder 11 that extends to the center of the upper portion of the cargo hold 20 is provided on the center column 100. At the upper position inside the cargo hold 20, there is provided a turning frame 30 that turns together with the turning cylinder 11 and whose tip extends to the inner wall surface of the cargo hold 20.

  A horizontal transfer device 40 is suspended from the revolving frame 30. The horizontal transfer device 40 is controlled in the vertical position by controlling the amount of suspension from the swivel frame 30 according to the height of the upper surface of the cargo C in the cargo hold 20 and moves in the cargo hold 20 together with the swivel frame 30. Turn.

  A supply chute 11c for loading cargo C from above is provided at the upper end of the swivel cylinder 11. A horizontal screw conveyor 12 is disposed below the supply chute 11c, and a telescopic chute 13 that expands and contracts in the vertical direction is disposed at the discharge portion of the horizontal screw conveyor 12. The discharge port of the telescopic chute 13 is located on the end of the horizontal conveyance device 40 on the turning center side.

  The horizontal conveyance device 40 conveys the cargo C received through the supply chute 11c, the horizontal screw conveyor 12, and the telescopic chute 13 toward the outside in the radial direction, and in the process, the cargo C is dispersed in the radial direction on average. . Further, the horizontal conveyance device 40 spreads the cargo C uniformly in the circumferential direction by the turning operation by the turning frame 30. Further, the horizontal transport device 40 scrapes and transports the cargo C to the inside in the radial direction, and pays it out to the center lower end of the cargo hold 20 via the center column 100.

  The cargo C paid out from the cargo hold 20 is discharged to the outside through a discharge conveyor 18 disposed below the horizontal screw silo 10. In addition, when handling the cargo C with low adhesiveness, it is also possible to replace the supply chute 11c and the horizontal screw conveyor 12 with an inclined chute (not shown).

Next, the detail of each part is demonstrated.
The cargo hold 20 includes a cylindrical side wall portion 20a, a bottom surface portion 20b that closes the lower end of the cylindrical side wall portion 20a, and an upper surface portion 20c that closes the upper end of the cylindrical side wall portion 20a. The inner surface of the cylindrical side wall portion 20a forms a cylindrical wall surface 20d. The bottom surface portion 20b and the top surface portion 20c are made of a planar disk-shaped member. The bottom surface portion 20b can be formed horizontally as shown in the figure, but when considering drainage from the cargo hold 20, it is formed so as to have a structure that descends from the outer peripheral side toward the central side. Also good.

  A hole for receiving cargo is formed in the upper surface portion 20c of the horizontal screw silo 10, and the upper end of the swivel cylinder 11 is rotatably attached to the hole portion via the swivel bearing 11a. In the center of the swivel cylinder 11, a supply chute 11c that turns together with the swivel cylinder 11 continuing from the fixed cargo supply port 11b is arranged.

  As shown in FIGS. 1 to 3, the center column 100 is connected to the lower end portion of the swivel cylinder 11 via a bearing 11 d. The center column 100 extends from the lower end portion of the swivel cylinder 11 to the bottom surface portion 20b through the center of the cargo hold 20, and is fixed to the bottom surface portion 20b. Here, the center column 100 has the following structure, for example.

  That is, the center column 100 is made of a plate-like member having an opening 111 in the center, and has a plurality of annular portions 110 arranged in multiple stages along the vertical direction, and openings for supporting the plurality of annular portions 110. 111 and a plurality of support plates 120 arranged so as to extend in the vertical direction.

  The center column 100 is disposed at the center of the openings 111 of the plurality of annular portions 110, and has a cylindrical central member 130 that extends in the vertical direction with the plurality of support plates 120 and the outer peripheral surface 131 joined to each other. A plurality of receiving portions for carrying cargo C, which is formed in a plurality of stages and arranged in the vertical direction between the annular portions 110, and is transported from a horizontal transport device 40, which will be described later, into the opening 111 of the center column 100. 112. Thus, the center column 100 is formed in a state where the receiving portion 112 is opened over substantially the entire circumference.

  As shown in FIG. 2, the plurality of annular portions 110 are opened by the support plates 120 arranged radially from the outer peripheral surface 131 of the central member 130 toward the circumferential direction of the annular portion 110 in a partial cross section, for example. It is supported at at least three locations on the 111 side. Further, as shown in FIG. 3 together with this, the plurality of support plates 120 are arranged so as to be spiral in the vertical direction inside the opening 111. Thus, the support plate 120 supports the annular portion 110 at a plurality of connection points.

  In addition, the plurality of annular portions 110 are arranged in the horizontal direction in consideration of the shape, size, angle of repose, etc. of the cargo C so that the cargo C does not inadvertently flow into the opening 111 during cargo handling. A width as a length, an inclination angle between the outer peripheral side and the inner peripheral side, and the like are set. In FIG. 3, the inclination angle is 0. In addition, the central member 130 may have a cross-sectional shape that is circular or square.

  As shown in FIG. 1, a cable passage 14c through which various cables such as a power cable and a signal cable are passed is provided inside the central member 130, and the various cables passing through the cable passage 14c are connected to the center column 100. It is electrically connected to a cable 14a drawn out to the side of the swivel cylinder 11 via a rotating brush 14b provided on the upper part, and has a structure capable of supplying electric power to various devices.

  In the center column 100 configured as described above, the cargo C is indicated by an arrow on the contact surface 121 of the support plate 120 when falling in the opening 111 as shown in FIGS. 4 and 5. And slides in the tangential direction of the outer circumferential circle formed in the horizontal direction of the support plate 120 by the inertial force, and falls to the lower outlet 29 while contacting the annular portion 110 and the cargo C thereon.

  For this reason, friction with these occurs during the descent, and the speed when the cargo C descends is suppressed. As a result, the impact force of the collision acting on the cargo C compared to the case where it falls freely in a straight line is as follows. Since it is weakened, it is possible to effectively prevent the cargo C from being broken and excessively finely divided.

  In particular, soda ash (anhydrous sodium carbonate) as cargo C, granulated products such as chemical fertilizers (granular products formed into granules to improve handling), livestock blended feed, wood pellets, hydrate pellets Applying the center column 100 having the structure according to the present embodiment to the horizontal screw silo 10 on which the etc. are loaded is useful for preventing excessive fine particles.

  A rail receiving portion 20f protruding intermittently or continuously from the cylindrical wall surface 20d is formed on the upper portion of the cylindrical wall surface 20d of the cylindrical side wall portion 20a. On the upper surface of the rail receiving portion 20f, a rail portion 20e is provided along the cylindrical wall surface 20d. The turning frame 30 is supported by the turning cylinder 11 at the center, and the end on the cylindrical wall surface 20d side is supported on the rail portion 20e of the cylindrical wall surface 20d via a traveling wheel 31. The swivel frame 30 is swiveled together with the swivel cylinder 11. In the configuration shown in FIG. 1, the rail portion 20e is provided on the rail receiving portion 20f of the cylindrical wall surface 20d, but may be provided on the rail receiving portion 20f provided on the upper surface portion 20c, for example.

  The traveling wheel 31 is provided with a drive device 32 having a speed reducer and a drive unit directly connected to drive the traveling wheel 31, for example. The driving device 32 is supported by a wheel shaft, and the driving device 32 and the turning frame 30 are directly connected (not shown) so that the driving device 32 does not fall down due to a driving reaction force. The traveling wheel 31 is provided on the turning frame 30 so as to be able to roll by a driving device 32 while supporting a part of the load of the turning frame 30.

  Further, a winch 35 and a wire sheave 36 for winding the suspension wire 34 are provided on the upper part of the revolving frame 30. The horizontal transfer device 40 is connected to the suspension wire 34 at a plurality of connection points 34 a and 34 b (see FIG. 6) while maintaining a horizontal state on the revolving frame 30, and is suspended by the suspension wire 34. The swivel frame 30 supports the entire horizontal conveyance device 40 so that it can move up and down by winding or unwinding the suspension wire 34 via the wire sheave 36 on the swivel frame 30 by the winch 35.

  As shown in FIGS. 6 and 7, the horizontal conveyance device 40 is swung and moved up and down in the cargo hold 20 via, for example, a swiveling roller unit 45 disposed around the center column 100 and the suspension wire 34. It is attached as possible. The horizontal conveyance device 40 conveys and collects the cargo C in the cargo hold 20 in the horizontal direction between the center of the cargo hold 20 (here, the center column 100) and the cylindrical wall surface 20d. is there. In this example, the turning roller unit 45 is configured to support only the force applied in the horizontal direction with respect to the center column 100, and is thus configured to move freely in the vertical direction.

  The horizontal conveyance device 40 includes a screw frame portion 48 that extends in the radial direction from the central axis of the cargo hold 20 toward the cylindrical wall surface 20d. The screw frame part 48 is integrally joined to the turning roller unit 45, for example. The screw frame portion 48 supports a pair of horizontal screws 41 and 42 that extend in the longitudinal direction of the horizontal conveying device 40 and are juxtaposed in the short direction for conveying the cargo C in the cargo hold 20 in the horizontal direction. To do.

  Moreover, the screw frame part 48 equips the edge part by the side of the cylindrical wall surface 20d with the drive machines 43 and 44 for driving the horizontal screws 41 and 42. FIG. The driving machines 43 and 44 are further attached to the screw shafts of the horizontal screws 41 and 42, respectively, whereby the screw frame portion 48 receives and drives the overturn reaction force generated when the driving machines 43 and 44 are operated. The machines 43 and 44 are configured not to fall.

  In addition, as shown in FIG. 6, the connection points 34a and 34b are provided at two locations in the short direction at two locations on both ends in the longitudinal direction of the horizontal transport device 40, respectively. Specifically, the connection point 34 a is provided at the end of the screw frame portion 48 on the cylindrical wall surface 20 d side, and the connection point 34 b is provided at the end of the screw frame portion 48 on the center column 100 side.

  As shown in FIG. 7, the horizontal screw 41 is disposed on the leading side (front side) of the turning direction T of the horizontal conveyance device 40 indicated by the arrow in the drawing, and the horizontal screw 42 is located on the trailing side (rear side). Is arranged. Each horizontal screw 41, 42 is configured to have a different screw outer diameter so that the screw outer diameter of the horizontal screw 41 is smaller than the screw outer diameter of the horizontal screw 42 in this example. The cargo C is disposed so as to be scraped by a predetermined amount from the upper surface CS (see FIG. 7) of the C. By forming the outer diameters of the screws to be different from each other as described above, the cargo C is scraped deeper by the horizontal screw 42 than the cargo C scraped by the horizontal screw 41, for example, and reaches the predetermined depth. It is configured to be able to. In addition, even if it equips with the horizontal screws 41 and 42 which have the screw outer diameter of the same diameter and adjusts the attachment height of a shaft center, it is possible to obtain an equivalent effect.

  The horizontal screws 41 and 42 of the horizontal conveyance device 40 convey the cargo C in the horizontal direction between the center column 100 at the center of the cargo hold 20 and the cylindrical wall surface 20d, and perform spreading, dispersion, collection and collection. is there. These are driven by the driving machines 43 and 44 so as to rotate in opposite directions. The horizontal screws 41 and 42 are configured such that, for example, the cargo C moves to the cylindrical wall surface 20d side in the forward rotation, and the cargo C moves to the center column 100 side in the reverse rotation.

  The telescopic chute 13 supplies the cargo C from the horizontal screw conveyor 12 to the horizontal conveying device 40 by free fall (lowering) of the cargo C, and expands and contracts as the horizontal conveying device 40 moves up and down. It is configured as follows. The horizontal screw conveyor 12 turns with the turning of the turning frame 30, and one end side of the horizontal screw conveyor 12 is arranged below the supply chute 11 c and the other end side is arranged above the telescopic chute 13.

  The lower end of the telescopic chute 13 is disposed in the vicinity of the center column 100 between the horizontal screws 41 and 42. Therefore, the telescopic chute 13 plays the role of a feeder for reliably dropping the cargo C onto the horizontal transport device 40 that turns the cargo C during loading.

  Further, as shown in FIG. 1, as a payment / shipping facility outside the horizontal screw silo 10, a discharge conveyor 18 that performs horizontal conveyance is provided with one end side disposed below the discharge port 29 of the center column 100. Although not shown in the drawings, the paying / shipping facility includes an upward conveying device connected to the discharge conveyor 18 and a connecting conveying device connected to other cargo handling facilities.

  The discharge conveyor 18 is configured by, for example, a screw conveyor or a belt conveyor. The connecting transport device is a device that transports the cargo C transported by the discharge conveyor 18 and the upward transport device to another cargo handling facility via the connecting portion. On the other hand, although the loading and unloading equipment outside the horizontal screw silo 10 is not shown or described in detail, the cargo C transported from other loading equipment is appropriately supplied to the horizontal screw silo 10.

  Here, cargo handling using the horizontal screw silo 10 will be described. The cargo handling is performed by loading the cargo C into other cargo handling equipment, a transport device for connection, a transport device to the horizontal screw silo 10, a cargo supply port 11b, a supply chute 11c, a horizontal screw conveyor 12, a telescopic chute 13, and a horizontal transport device 40. It is a cargo handling to be accommodated in the cargo hold 20 via.

  That is, first, cargo C transported from another cargo handling facility is supplied to the upper part of the cargo hold 20 of the horizontal screw silo 10 via a connecting transport device or a transport device to the horizontal screw silo 10. Supply to the mouth 11b.

  The cargo C supplied to the cargo supply port 11 b falls from the supply chute 11 c to the horizontal screw conveyor 12, is transported in the horizontal direction, and is supplied to the telescopic chute 13. The cargo C supplied to the telescopic chute 13 is conveyed to the center column 100 side of the horizontal conveying device 40 by free-falling or the like inside the telescopic chute 13.

  The horizontal conveyance device 40 is configured such that the cargo C conveyed to the horizontal conveyance device 40 rotates, for example, the horizontal screws 41 and 42 respectively in the normal direction so that the center wall 100d side of the horizontal conveyance device 40 is from the center column 100 side. It is comprised so that it may be conveyed horizontally. In addition, prior to the start of loading, the horizontal transfer device 40 sets the lower limit position level in the cargo hold 20 of the horizontal transfer device 40 set in advance (or if a certain load C is already in the hold 20). The upper limit level of the cargo C) is moved to a position that maintains a predetermined height.

  The cargo C transported to the horizontal transport device 40 in such a state is transported horizontally and horizontally transported from the center column 100 side to the cylindrical wall surface 20d side in the vicinity of the horizontal screws 41 and 42 and in the lower space. It is accommodated sequentially along the device 40. Thus, the cargo C is scattered in the centrifugal direction (radial direction) of the cargo hold 20.

  Then, when the cargo C is leveled and accommodated in the whole area in the centrifugal direction, the swivel frame 30 is swung by a predetermined angle so that the horizontal transport device 40 is moved in the circumferential direction (the swivel direction T ′ during loading), FIG. (See the middle arrow), and further, the cargo C is evenly accommodated in the centrifugal direction. When this process is repeated or continuously performed and the horizontal transport device 40 is rotated 360 ° around the central axis P to make one round, the leveling and loading of the cargo C at that height is completed. In the loading / unloading, the cargo C is evenly dispersed and accommodated in the circumferential direction of the cargo hold 20 by such turning of the horizontal conveyance device 40.

  Then, after the leveling and accommodation of the cargo C for one round in the cylindrical cargo hold 20 is completed, the suspension wire 34 that suspends the horizontal transfer device 40 is wound up by the winch 35 provided on the revolving frame 30. The height of the horizontal transfer device 40 is increased by a predetermined amount. Thereafter, when the leveling and accommodation of the cargo C for one round at this height is completed, the height of the horizontal conveying device 40 is further increased by a predetermined amount.

  By repeating such processing, the cargo C is leveled and accommodated from the position directly above the bottom surface portion 20b to a desired position or fully loaded, so that the cargo C is loaded into the cargo hold 20 and the loading operation is completed.

  Next, a payment / shipping combination using the horizontal screw silo 10 will be described. The payer / shipper receives the cargo C loaded in the cargo hold 20 of the horizontal screw silo 10 via the horizontal conveying device 40, the center column 100, the discharge conveyor 18, the upward conveying device, the connecting conveying device, etc. It is a cargo handling to be paid out to other cargo handling equipment.

  That is, first, another cargo handling facility and a connection transport device are connected by a connection portion (not shown). Next, the horizontal screws 41 and 42 of the horizontal conveying device 40 are rotated in the reverse direction to the cargo handling, and then the hanging wire 34 that suspends the horizontal conveying device 40 from the turning frame 30 is drawn out by the winch 35, The horizontal conveyance device 40 is moved so as to have a predetermined relative height with respect to the upper surface CS of the cargo C on which the height is mounted.

  Next, the cargo frame C is turned from the cylindrical wall surface 20d side of the horizontal transfer device 40 by turning the turning frame 30 at a predetermined turning speed and turning the horizontal transfer device 40 in the turning direction T opposite to that for loading. Transport horizontally while scraping to the center column 100 side. By this horizontal conveyance, the cargo C is carried into the center column 100 through the receiving portion 112 of the center column 100 from the discharge end of the horizontal conveyance device 40 whose height coincides with the upper surface of the annular portion 110, and inside. As described above, it falls and reaches the lower part of the center column 100.

  Then, when the turning frame 30 is continuously turned and the horizontal transfer device 40 is turned 360 ° around the central axis P, the transfer of the cargo C to the center column 100 at that height is completed. In the unloading work, the cargo C is collected from the cargo hold 20 to the center column 100 by such turning of the horizontal conveying device 40. Note that the amount of payout per time can be controlled by controlling the turning speed of the turning frame 30.

  Then, when the collection of the cargo C for one round in the cylindrical cargo hold 20 is completed, the hanging wire 34 that suspends the horizontal conveyance device 40 from the revolving frame 30 is fed out, and the height of the horizontal conveyance device 40 is determined. Lower quantitative. Thereafter, when the collection of the cargo C for one round at this height is completed, the height of the horizontal conveying device 40 is further lowered by a predetermined amount.

  By repeating such processing, the cargo C is collected from the upper surface CS of the cargo C loaded in the cargo hold 20 to a desired position or directly above the bottom surface portion 20b, so that the cargo C in the cargo hold 20 is center column. Collect in 100. The cargo C descending to the lower part of the center column 100 and discharged from the discharge port 29 is conveyed in the horizontal direction by the discharge conveyor 18 disposed below the horizontal screw silo 10.

  Then, the cargo C transported by the discharge conveyor 18 is transported to another cargo handling facility via an upward transport device, a connection transport device, a connection portion, and the like. This completes the payment / shipment of the horizontal screw silo 10.

  As described above, in the horizontal screw silo 10 according to the first embodiment of the present invention, since the support plate 120 of the center column 100 is spirally arranged, the cargo C that descends in the center column 100 with a simple configuration can be obtained. Since the speed can be suppressed, it is possible to prevent the cargo C from being excessively finely divided.

[Second Embodiment]
FIG. 8 is a cross-sectional view showing a part of the center column of the horizontal screw silo according to the second embodiment of the present invention. In the following description, the same reference numerals are assigned to portions that overlap the already described portions, and description thereof is omitted.

  As shown in FIG. 8, in the horizontal screw silo according to the second embodiment, the center column 100A of the support plate 120 employed in the center column 100 of the horizontal screw silo 10 according to the first embodiment is used. The point provided with the projection part 122 which contacts the cargo C falling in the opening part 111 on the contact surface 121 is different from the horizontal screw type silo 10 which concerns on 1st Embodiment. Since the protrusion 122 can cause the cargo C sliding on the contact surface 121 to stay, it is possible to suppress the speed when the cargo C descends and to achieve the same effect as described above.

[Third Embodiment]
FIG. 9 is a cross-sectional view showing a part of the center column of the horizontal screw silo according to the third embodiment of the present invention. FIG. 10 is a cross-sectional view taken along the line FF ′ of FIG. As shown in FIGS. 9 and 10, the horizontal screw silo according to the third embodiment is different from the horizontal screw silo according to the first embodiment in that the center column 100B is as follows. Yes.

  That is, the center column 100B is provided on the outer peripheral surface 131 positioned between the plurality of receiving portions 112 of the central member 130 at predetermined intervals in the vertical direction, and is in contact with the cargo C falling in the opening 111. A plurality of annular plates 132 are provided. In addition, among the plurality of annular portions 110, a predetermined annular portion (another annular portion in FIG. 10) 110 disposed on the upper side with respect to each cargo contact annular plate 132 is an opening portion. An extension cone 113 having a conical section is formed on the 111 side so as to extend obliquely downward toward the cargo contact annular plate 132. The extension cones 113 may be provided on all the annular portions 110 according to the arrangement interval of the annular portions 110, or may be provided at further intervals. The plurality of support plates 120 are linearly arranged in the vertical direction.

  In the center column 100B configured as described above, as shown in FIG. 10, the cargo C that is carried in from the receiving portion 112 and falls in the opening 111 is relatively placed on the cargo contact annular plate 132 of the central member 130. Fall through a short fall distance. Then, the cargo C dropped on the cargo contact annular plate 132 falls after the angle of repose is formed, and falls toward the extension cone 113 as indicated by an arrow in the figure. Further, the cargo C sliding down from the extension cone 133 falls toward the cargo contact annular plate 132.

  Thus, since the cargo C falls to the discharge port 29 so as to alternately contact the cargo contact annular plate 132 and the extension cone 113 in the dropping process, the above-mentioned first screw silo according to the present embodiment also has the above-described first. The same effects as those according to the first and second embodiments can be obtained.

  In the above-described embodiment, a case where the cargo hold 20 is cylindrical has been described as a preferable example. However, the cylinder in the present invention includes a cylinder, an elliptic cylinder, a polygonal cylinder, and the like.

  Moreover, the center part (position of a central axis) of the cargo hold 20 in the present invention indicates a virtual circle inside the cargo hold 20 and indicates the center of the virtual circle. The preferred center position is the center of a circle when the cargo hold 20 is cylindrical, and is as follows when the cargo hold 20 is other than a cylindrical shape (in the case of a polygon or an ellipse). That is, when the shape of the cargo hold 20 is other than the cylindrical shape (a) the shape of the cargo hold 20 is a rectangular shape or a polygonal cylindrical shape whose opposite sides are parallel to each other, the intersection of the lines connecting each side and the midpoint of the opposite side The center. In addition, when the shape of the cargo hold 20 is other than the cylindrical shape and other than the above (a), a circle having the maximum diameter that is inscribed in at least two places on the cylindrical wall surface and does not intersect with the wall surface is assumed. The center is the center of the cargo hold 20. Note that when a plurality of circles are hypothesized depending on conditions, any one of them may be selected, and the center of the selected virtual circle may be the center of the cargo hold 20.

DESCRIPTION OF SYMBOLS 10 Horizontal screw type silo 11 Rotating cylinder 12 Horizontal screw conveyor 13 Telescopic chute 20 Cargo hold 30 Rotating frame 34 Hanging wire 40 Horizontal conveyance device 41, 42 Horizontal screw 43, 44 Driver 45 Rotating roller unit 48 Screw frame part 100 Center column DESCRIPTION OF SYMBOLS 110 Annular part 111 Opening part 112 Receiving part 113 Extension cone 120 Support plate 121 Contact surface 122 Protrusion part 130 Central member 131 Outer peripheral surface 132 Cargo contact | abutting annular plate

Claims (1)

A cargo hold having a cargo supply port at the top and a cylindrical wall surface inside which accommodates fine, lump or pellet shaped cargo;
A center column that is fixedly arranged at the center of the cargo hold and configured to be movable below the cargo hold when the cargo falls;
A swivel frame disposed at an upper position inside the cargo hold and driven to swivel with a central axis of the cargo hold as a turning axis, and a tip extending toward the wall surface;
The central axis is the pivot axis and is suspended from the pivot frame via a suspension wire, and is pivoted by following the pivoting motion of the pivot frame, and is moved up and down by the winding wire winding or feeding operation. A screw-type horizontal conveying device that conveys and collects the cargo in a horizontal direction between the center of the cargo hold and the wall surface,
In a horizontal screw silo that discharges the cargo collected by the horizontal conveying device to the outside of the cargo hold,
The center column is
A plate-shaped member having an opening in the center, and a plurality of annular portions arranged in multiple stages along the vertical direction,
A plurality of support plates arranged to extend along the vertical direction inside the opening to support the plurality of annular portions;
A cylindrical central member disposed in the center of the openings of the plurality of annular portions, the plurality of support plates and an outer peripheral surface being joined and extending in the up-down direction;
A plurality of receiving portions formed between the plurality of annular portions for carrying the cargo into the center column;
The central member includes a plurality of cargo contact annular plates that are provided at predetermined intervals in the vertical direction on an outer peripheral surface located between the plurality of receiving portions, and that contact a cargo falling in the opening.
Among the plurality of annular portions, a predetermined annular portion among those disposed on the upper side with respect to each cargo contact annular plate extends obliquely downward toward the cargo contact annular plate on the opening side. Having an extension cone with a conical section formed as follows:
The horizontal screw silo, wherein the cargo contact annular plate and the extension cone are arranged so that cargo falling in the opening alternately contacts in the dropping process.

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