JP5582897B2 - Foreign matter filter and hose for bulk car - Google Patents

Description

  The present invention relates to a foreign matter filter for removing foreign matter in a granular material for food and a hose for a bulk vehicle equipped with the foreign matter filter.

  Conventionally, when transporting granular materials such as durum semolina and wheat flour to the user's factory, the granular materials are packed and transported, or the granular materials are left in the bulk car tank as they are. A method of loading and transporting is used. When unloading powder from a bulk vehicle in this bulk vehicle transport method, one end of the bulk vehicle hose is connected to the bulk vehicle, and the other end of the bulk vehicle hose is attached to the destination silo. After connecting to the receiving port, the tank of the bulk car is tilted, compressed air is sent into the tank, and the granular material is conveyed to the silo via the hose for the bulk car.

  By the way, when transporting granular materials using a hose for bulk vehicles, in the unlikely event that foreign matter gets in the bulk vehicle tank, the foreign material will not be sent into the destination silo. There is a foreign matter removing device arranged at the inlet of a hose for a bulk vehicle to be connected (see, for example, Patent Document 1). The foreign matter removing apparatus includes an outer frame in which a cylindrical space is formed, and a partition that partitions the space formed by the outer frame in a lattice shape in the flow direction of the flow path. Has been removed.

  In addition, there is a filter in which through holes of square pillars are formed in a lattice shape as a filter installed in an edible powder particle transport hose (see, for example, Patent Document 2).

JP 2006-82961 A JP 2009-18936 A

  However, in the foreign matter removing apparatus described above, when conveying a granular material having a relatively large particle size such as durum semolina, the inner peripheral edge of the outer frame on the side into which the granular material flows or the connecting portion between the outer frame and the partition wall In such cases, the resistance when the granular material passes through becomes large, and the granular material does not pass smoothly and may adhere to the partition wall and cause clogging.

  An object of the present invention is to provide a foreign matter filter having low resistance and high strength when a granular material for food passes, even when conveying a granular material having a relatively large particle diameter such as durum semolina. To provide a hose for a bulk vehicle provided with the foreign matter filter.

The foreign matter filter of the present invention is a foreign matter filter that is disposed in a flow path of an air conveyance pipe for conveying a granular material for food and removes the foreign matter contained in the granular material that passes through the flow path. A ring-shaped outer frame having a planar portion with a predetermined width on the inflow side and the outflow side of the granular material, and a partition that partitions a space formed by the outer frame in a lattice shape, The inner peripheral edge of the planar portion on the inflow side of the granular material has a predetermined curved shape, the outer peripheral edge of the planar portion on the inflow side of the granular material, and the outflow of the granular material The edge on the inner peripheral side and the edge on the outer peripheral side of the flat portion on the side are substantially perpendicular, and the width of the partition in the flow direction of the granular material is the width of the outer frame in the flow direction of the granular material The partition wall has predetermined curved surfaces on the inflow side and outflow side of the granular material, and the inflow side and outflow side of the granular material In the position of the top of the curved surface of the partition wall is located inward in the flow direction of the powder or granular material from the position of the flat portion of the outer frame, the end of the inner circumferential surface of the outer frame bulkhead The connecting portion with the portion is a predetermined concave curved surface .

  In the foreign matter filter according to the present invention, the width of the partition in the flow direction of the granular material needs to be equal to or larger than the width of the partition in the direction perpendicular to the flow direction of the granular material. Is preferred to be larger.

  The foreign matter filter according to the present invention is formed by integrally molding a metal disk member and machining the outer frame and the partition wall.

  The bulk vehicle hose of the present invention is a bulk vehicle hose having a joint part that is detachably connected to a tank of a bulk car that conveys the granular material, and is used for an inlet of the joint part. The cross section includes the foreign matter filter of the present invention.

  According to the present invention, even when a granular material having a relatively large particle size, such as durum semolina, is conveyed, a low-resistance and high-strength foreign matter filter when the granular material for food passes and A bulk vehicle hose provided with the foreign matter filter can be provided. That is, even when conveying a granular material having a relatively large particle size, such as durum semolina, at the inner peripheral edge of the outer frame on the side into which the granular material flows or the connecting portion between the outer frame and the partition wall, etc. The resistance when the powder particles pass increases, and the powder particles do not pass smoothly and do not cause clogging due to adhesion to the partition walls.

It is a perspective view of the joint part of the hose for bulk vehicles concerning an embodiment. It is sectional drawing of the joint part of the hose for bulk vehicles which concerns on embodiment. It is the figure which looked at the foreign material filter concerning an embodiment from the inflow side of a granular material. It is the figure which looked at the foreign material filter concerning an embodiment from the outflow side of a granular material. It is AA sectional drawing in FIG. 3 of the foreign material filter which concerns on embodiment. It is an enlarged view of the D section in Drawing 5 of a foreign substance filter concerning an embodiment. It is BB sectional drawing in FIG. 3 of the foreign material filter which concerns on embodiment. It is an enlarged view of the C section in Drawing 3 of a foreign substance filter concerning an embodiment. It is a figure which shows the other cross-sectional shape figure of the partition of the foreign material filter which concerns on embodiment. It is a figure which shows the other cross-sectional shape figure of the partition of the foreign material filter which concerns on embodiment.

  Hereinafter, a foreign matter filter and a bulk vehicle hose according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a joint portion of a bulk vehicle hose according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the joint portion of the bulk vehicle hose according to the embodiment of the present invention.

  In the case of using the pneumatic feeding method when discharging the granular material of durum semolina loaded in the tank of the bulk car into the silo, the hose 2 for the bulk car is between the tank outlet 30 of the bulk car and the silo. The tank of the bulk car is tilted, and compressed air from the compressor or blower is sent into the tank of the bulk car, and the tank is pressurized to a predetermined pressure. Is pumped and discharged out of the bulk vehicle at an air speed of about 10 to 30 m / sec. The discharged granular material is conveyed through the hose 2 for bulk vehicles, and is thrown into the silo.

  As shown in FIGS. 1 and 2, the joint part between the tank outlet 30 of the bulk car and the hose 2 for the bulk car includes the trumpet part 4 of the hose 2 for the bulk car and the trumpet part 4 of the cylindrical shape. The coupling 8 is connected to the tank outlet 30 of the bulk vehicle via the rubber packing 6. Here, the coupling 8 is a bisected ring in which the ring is halved, and its cross section has a mountain shape as shown in FIG. When connecting the tank discharge port 30 of the bulk vehicle and the trumpet-shaped portion 4 of the bulk vehicle hose 2 via the rubber packing 6, one end of the rubber packing 6 is a trumpet-shaped portion of the bulk vehicle hose 2. 4 and the other end is inserted into the extended portion of the tank outlet 30. And the expansion part of the trumpet-shaped part 4 of the hose 2 for bulk vehicles and the expansion part of the tank discharge port 30 are faced | matched inside the coupling 8, and a split ring is fastened and both are connected. A rubber hose portion 10 having a diameter of about 100 to 120 mm is connected to the trumpet-shaped portion 4. The other end of the rubber hose portion 10 is provided with a coupling (not shown) for connecting to a pipe attached to a silo for receiving a granular material of durum semolina.

  A metal foreign matter filter 12 described later is installed in the flow path of the trumpet-shaped portion 4 of the bulk vehicle hose 2. That is, the inner wall of the trumpet-shaped portion 4 is formed with a ring-shaped flange portion 4a having a flat portion, and the flange portion 4a has a flat portion 14d on the discharge side of the powder fluid of the outer frame 14 of the foreign matter filter 12 ( 4) is pressed and installed.

  Next, the foreign matter filter 12 will be described with reference to FIGS. 3 is a view of the foreign matter filter 12 as viewed from the inflow side of the granular material, FIG. 4 is a view of the foreign matter filter 12 as viewed from the outflow side of the granular material, and FIG. FIG. 6 is an enlarged view of a portion D of FIG. 5 of the foreign matter filter 12, FIG. 7 is a sectional view taken along the line BB of FIG. 3 of the partition wall 16 of the foreign matter filter 12, and FIG. It is an expansion perspective view of a part.

  As shown in FIGS. 3, 4, and 6, the foreign matter filter 12 includes an annular outer frame 14 and a partition wall 16 that partitions a space formed by the outer frame 14 into a lattice shape. A planar portion 14a having a predetermined width (4.0 mm to 5.0 mm) is formed on the inflow side of the granular material of the outer frame 14, and an edge portion 14b on the inner peripheral side of the planar portion 14a is a predetermined curved surface. The edge portion 14c on the outer peripheral side of the flat surface portion 14a has a substantially right-angle shape. Further, a flat surface portion 14d having a predetermined width (5.0 mm to 6.0 mm) is formed on the outflow side of the granular material of the outer frame 14, and an edge portion 14e and an outer periphery on the inner peripheral side of the flat surface portion 14d. The side edge portion 14f has a substantially right-angle shape.

  As shown in FIGS. 5 and 7, the width X (3.0 mm to 6.0 mm) of the partition wall 16 in the flow direction of the granular material is equal to the width Y (9 mm to 12 mm) of the outer frame 14 in the flow direction of the granular material. ). In addition, the partition wall 16 has a width X in the flow direction of the granular material larger than a width Z (2.0 mm to 3.0 mm) in a direction perpendicular to the flow direction of the granular material. The predetermined curved surface 16a is formed on the inflow side and the outflow side of the rectangular granular material having long sides in the flow direction. Note that the cross section of the partition wall 16 may have a spindle shape in which the flow direction of the granular material is the longitudinal direction.

  As shown in FIGS. 5 and 8, the partition wall 16 has an outer frame 14 in which the top portion of the curved surface 16 a of the partition wall 16 is located on the inflow side and outflow side of the granular material rather than the positions of the flat portions 14 a and 14 d of the outer frame 14. It is located inside in the flow direction of the granular material. Further, the end portions of the partition wall 16 are connected to the inner peripheral surface of the outer frame 14 respectively, but a predetermined concave curved surface (R1 mm) is formed at the connection portion between the end portion of the partition wall 16 and the inner peripheral surface of the outer frame 14. Is formed.

  The foreign matter filter 12 is formed by integrally molding a single metal disc member and machining it into the outer frame 14 and the partition wall 16.

  The granular material of durum semolina discharged from the tank discharge port 30 of the bulk vehicle is put into the silo via the hose 2 for the bulk vehicle. Here, in the unlikely event that foreign matter is mixed into the granular material of durum semolina, the foreign matter is removed by the foreign matter filter 12 installed in the flow path of the trumpet-like portion 4 of the bulk vehicle hose 2.

  According to the present invention, even when a granular material having a relatively large particle size, such as durum semolina, is conveyed, a low-resistance and high-strength foreign matter filter when the granular material for food passes and A bulk vehicle hose provided with the foreign matter filter can be provided. That is, the outer frame 14 has a predetermined curved surface shape on the inner peripheral side edge 14b of the flat surface portion 14a on the inflow side of the granular material, thereby reducing the resistance when the granular material passes. Can do. Further, since the partition wall 16 has a shape in which a predetermined curved surface 16a is formed on the inflow side and the outflow side of the granular material, the resistance when the granular material passes through the partition wall 16 can be reduced.

  Further, the width X of the partition wall 16 in the flow direction of the granular material is formed smaller than the width Y of the outer frame 14 in the flow direction of the granular material, and the top of the curved surface 16a on the inflow side and outflow side of the granular material. Since the position is located on the inner side of the positions of the flat surface portion 14a and the flat surface portion 14d of the outer frame 14, the width X in the flow direction of the granular material of the partition wall 16 is reduced at the connection portion between the outer frame 14 and the partition wall 16. And a predetermined concave curved surface can be formed. Therefore, the resistance when the granular material passes through the foreign matter filter 12 can be reduced without reducing the strength of the foreign matter filter 12.

  Therefore, even when a granular material having a relatively large particle diameter, such as durum semolina, is transported, the inner peripheral edge of the outer frame on the side into which the granular material flows or the connecting portion between the outer frame and the partition wall, etc. The resistance when the powder particles pass increases, and the powder particles do not pass smoothly and do not cause clogging due to adhesion to the partition walls.

  Further, in the cross section of the partition wall 16, since the width X in the flow direction of the granular material is larger than the width Z in the direction perpendicular to the flow direction of the granular material, the high-strength foreign matter filter 12 can be realized.

  Further, the outer frame 14 has an outer peripheral edge portion 14e and an outer peripheral edge portion 14f of the flat surface portion 14d on the outflow side of the granular material, and has a substantially right-angle shape. The contact area with the flange portion 4a of the trumpet-shaped portion 4 of the hose 2 can be increased, and the foreign matter filter 12 can be reliably fixed to the flange portion 4a.

  In addition, in the above-mentioned embodiment, although the case where the granular material of durum semolina is discharged from a bulk car to a silo has been described as an example, when discharging the granular material for other foods such as wheat flour, The foreign matter filter 12 and the bulk vehicle hose 2 of the invention may be used.

  Moreover, in the above-mentioned embodiment, as shown in FIG. 7, in the cross section of the partition wall 16, the width X in the flow direction of the granular material is larger than the width Z in the direction perpendicular to the flow direction of the granular material. Although the case has been described as an example, as shown in FIG. 9, in the cross section of the partition wall 16, the width X in the flow direction of the granular material and the width Z in the direction perpendicular to the flow direction of the granular material are substantially the same circular shape. There may be. In addition, as shown in FIG. 10, in the cross section of the partition wall 16, the width X in the flow direction of the powder and the width Z in the direction perpendicular to the flow direction of the powder are substantially quadrangular with rounded corners. There may be.

  Moreover, in the above-mentioned embodiment, although the case where the foreign material filter 12 was installed in the flow path of the hose 2 for bulk vehicles was demonstrated, it installed not only in the hose 2 for bulk vehicles but in other air conveyance piping. Also good.

  DESCRIPTION OF SYMBOLS 2 ... Bulk car hose, 4 ... Trumpet-like part, 6 ... Rubber packing, 8 ... Coupling, 10 ... Rubber hose part, 12 ... Foreign matter filter, 14 ... Outer frame, 14a ... Flat part, 14b ... Edge part, 14c ... Edge, 14d ... plane, 14e ... edge, 14f ... edge, 16 ... partition, 16a ... curved surface, 30 ... tank outlet

Claims (4)

A foreign matter filter that removes foreign matters contained in the granular material that is disposed in a flow path of an air conveyance pipe for conveying a granular material for food and that passes through the flow path,
An annular outer frame having a plane portion of a predetermined width on the inflow side and the outflow side of the granular material;
A partition that partitions the space formed by the outer frame into a lattice shape,
The outer frame has a predetermined curved surface shape at an inner peripheral side edge of the inflow side flat part of the granular material, an outer peripheral edge of the inflow side flat part of the granular material, and the granular material The edge part on the inner peripheral side and the edge part on the outer peripheral side of the plane part on the outflow side of the body have a substantially right-angle shape,
The width of the partition wall in the flow direction of the granular material is smaller than the width of the outer frame in the flow direction of the granular material,
The partition wall has predetermined curved surfaces on the inflow side and the outflow side of the granular material, and the position of the top of the curved surface of the partition wall is the plane of the outer frame on the inflow side and outflow side of the granular material. The foreign matter is located on the inner side in the flow direction of the granular material than the position of the portion, and the connecting portion between the inner peripheral surface of the outer frame and the end of the partition wall is a predetermined concave curved surface filter. Width of the partition wall in the flow direction of the granular body, the foreign matter filter according to claim 1, wherein the same, or greater than, the width of the vertical direction of the partition wall in the flow direction of the powder or granular material . 3. The foreign matter filter according to claim 1 , wherein the foreign matter filter is formed by integrally molding a metal disk member and machining the outer frame and the partition wall. 4. A bulk car hose having a joint part that is detachably connected to a tank of a bulk car that transports the granular material,
A hose for a bulk vehicle, comprising the foreign matter filter according to any one of claims 1 to 3 in a cross-section of an inlet of the joint portion.

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