JP7236128B2 - Granular material collecting device and granular material collecting method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a particulate material collection device and a particulate material collection method for collecting particulate material to be transported.

BACKGROUND ART Conventionally, a collector is known in which pneumatically transported particulate material is separated from transported air by a filter in a collector body and collected. In such a collector, if the filter is clogged, the transportation efficiency is lowered, so the filter needs to be cleaned regularly.
For example, Patent Literature 1 below discloses a collector that sucks and collects powder generated in a powder generator through a filter. This collector has a pipe line provided above the filter for injecting gas from the gas supply source to the filter in a direction opposite to the direction of suction when collecting powder. there is

JP-A-3-86232

However, in the collector described in Patent Document 1, it is necessary to provide a mechanism for injecting gas back into the filter, and further improvement is desired. In addition, since the powder adhering to the filter falls into the collector due to the reverse injection, it is conceivable that the powder adheres to the filter again when switching to the suction side.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and provides a collection apparatus for a particulate material and a collection apparatus for a particulate material that can improve maintainability of a filter while allowing a simple structure. The purpose is to provide a collection method.

In order to achieve the above object, the collecting device for particulate material according to the present invention comprises a collector body for collecting pneumatically transported particulate material, and a collector body accommodated in the collector body. and a filter that separates the particulate material from the transport air, and the collector body holds the held portion provided on the filter, and the filter is attached to the A first posture in which the first surface side faces the upstream side in the passage direction of the conveyed air in the collector main body and a second posture in which the first surface side faces the downstream side in the passage direction of the conveyed air. It is characterized in that a holding portion is provided to hold each posture reversibly .

In order to achieve the above object, a method for collecting powdery or granular material according to the present invention is a method for collecting powdery or granular material using the apparatus for collecting powdery or granular material according to the present invention, comprising: It is characterized by notifying when it is time to reverse the filter.

The apparatus for collecting powdery or granular material according to the present invention and the method for collecting powdery or granular material using the apparatus are configured as described above. Filter maintainability can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially broken schematic front view schematically showing an example of a particulate material collecting device according to an embodiment of the present invention. (a), (b) is a schematic perspective view which shows typically an example of the filter with which the same collection apparatus is equipped. (a) is a schematic plan view of the same filter, and (b) is a partially broken schematic exploded vertical cross-sectional view schematically showing an example of a collector body provided in the same collection device. (a), (b) is a partially broken schematic vertical cross-sectional view of the same collection apparatus. (a), (b) is a schematic perspective view which shows typically the example of a changed completely type of the filter applied to the collection apparatus. (a) is a schematic plan view of the same filter, and (b) is a schematic longitudinal sectional view of the same filter. (a) is a schematic control block diagram of a modified example of the same collection device, and (b) is a powder particle according to one embodiment of the present invention as an example of basic operations executed using the same collection device. 1 is a schematic flow chart schematically showing an example of a body material collection method.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
In the following embodiments, directions such as the vertical direction will be described on the basis of the state in which the collecting device for powdery or granular material according to the present embodiment is installed. Moreover, in each figure, illustration of the through-hole of the filter of each example is omitted or simplified.
FIGS. 1 to 7 schematically show an example and a modification of a particulate material collecting apparatus according to the present embodiment, and an example of a particulate material collecting method performed using the same collecting apparatus. FIG. 4 is a diagram showing;

As shown in FIG. 1, a collecting apparatus 1 for powdery or granular material according to the present embodiment includes a collector body 10 for collecting pneumatically transported powdery or granular material, and a collector body 10 in which a filter 30 provided to separate the particulate material from the transport air.
Here, the powdery or granular materials refer to materials in the form of powder or granules, but include materials in the form of microflakes, short fiber flakes, sliver-like materials, and the like.
Moreover, as the above material, any kind of material such as synthetic resin materials such as resin pellets and resin fiber pieces, metal materials, semiconductor materials, wood materials, chemical materials, and food materials may be used.
Examples of the powdery material include natural material (virgin material), pulverized material, masterbatch material, various additives, and the like in the case of molding a synthetic resin molded product. Moreover, it is good also as a structure containing reinforcing fibers, such as a glass fiber and a carbon fiber.

In the present embodiment, the collection device 1 is connected to a suction source 2 and a transportation source (material source) 4 of the powdery or granular material, and collects the powdery or granular material from the transportation source 4 which is pneumatically transported by suction air. It is configured to be separated from the sucked air and collected.
The suction source 2 may be an air suction source such as a suction blower connected via an air suction pipe 3 . Such a suction source 2 is not limited to the one dedicated to the collection device 1. For example, a mode in which transportation to the collection device 1 and transportation to another device are switched by a switching valve or the like. It can be a thing. A dust collector equipped with an appropriate filter such as a bag filter or a cyclone filter is provided on the upstream side of the suction source 2 .

The transportation source 4 includes a material tank connected via a material transportation pipe 5, a drying hopper, a weighing hopper for weighing the granular materials, and a blending hopper for blending a plurality of types of granular materials at a predetermined ratio. There may be. Also, a temporary storage section provided downstream of these various hoppers may be used as the transportation source 4 . Further, the collecting device 1 is not limited to a mode in which the material transport pipe 5 connected to the collecting device 1 is connected to a single transportation source 4 to collect a kind of granular material in the collecting device 1 . For example, a material transport pipe 5 connected to the collection device 1 is connected to a plurality of transport sources 4 that respectively store different powder materials, and a plurality of types of powder particles from these multiple transport sources 4 are collected. The material may be collected in the collection device 1 concerned.

Further, the supply destination of the collecting device 1 may be a storage tank, a storage hopper, or the like that temporarily stores the granular material collected by the collecting device 1. A drying hopper that dries the powdery material may be used as the supply destination. Further, for example, a molding machine such as an injection molding machine may be the supply destination of the collecting device 1 . In this case, the collecting device 1 may be installed directly on the molding machine. The molding machine to be supplied is not limited to an injection molding machine for molding synthetic resin molded products, and may be an injection molding machine for other materials, or an extrusion molding machine or compression molding machine for various materials. It is good also as the aspect which makes another molding machine the supply destination. Further, the supply destination of the particulate material collected by the collection device 1 is not limited to a single supply destination, and may be a plurality of supply destinations.

The collector main body 10 is provided with a suction connecting pipe 22 connected to the suction source 2 via the air suction pipe 3 and a material introduction pipe 15 connected to the transport source 4 via the material transport pipe 5. It is Further, the collector main body 10 is provided with a holding portion 25 for holding a held portion 33 of the filter 30 described later.
In this embodiment, the collector main body 10 includes a hopper portion 11 having a substantially cylindrical upper portion and a substantially inverted cone-shaped lower portion, and covers the upper end opening of the hopper portion 11 so as to be openable and closable. A lid body 20 is provided. The collector main body 10 may have a substantially rectangular tube shape, but in this embodiment, it has a substantially cylindrical shape. The collector main body 10 is not limited to a hopper shape, and may be a tank shape or a drum shape. Further, the collector main body 10 may be configured such that a main body portion having a larger capacity than the collecting portion provided at the upper end portion is provided below the collecting portion.

At the lower end of the hopper portion 11, a discharge pipe 14 forming a discharge portion and a valve body 18 for opening and closing a discharge port 17 at the lower end of the discharge pipe 14 are provided. In this embodiment, a material introduction pipe 15 is connected to the discharge pipe 14 . The material introduction pipe 15 is connected to the side peripheral portion of the discharge pipe 14 and is configured such that the introduction port 16 is opened on the inner peripheral side of the discharge pipe 14 . Although the drawing shows an example in which the material introduction pipe 15 is provided substantially horizontally, instead of such an aspect, the material introduction pipe 15 may be inclined upward or downward toward the discharge pipe 14. It is good also as the aspect etc. which were provided. Further, instead of connecting the material introduction pipe 15 to the discharge pipe 14, it may be connected to a substantially inverted cone-shaped portion or a substantially cylindrical portion of the hopper portion 11. A configuration or the like in which the introduction pipe 15 is introduced into the hopper portion 11 may be employed.

Also, the lower end surface of the discharge pipe 14 is formed as an inclined surface that is inclined with respect to the axial direction.
A valve body 18 for opening and closing the discharge port 17 at the lower end of the discharge pipe 14 is supported by a support member 19 so as to be swingable. In this embodiment, the valve body 18 is configured to close the discharge port 17 by the action of the suction force of the suction source 2 and to open it by the load of the falling (flowing down) granular material. Further, in the illustrated example, a gap is formed between the exhaust pipe 14 and the inclined lower end surface of the discharge pipe 14 at the standby position where the suction force of the suction source 2 and the load of the powdery material are not acting on the valve body 18 . It is configured to be The figure shows an example in which the support member 19 has an arm shape with one end connected to the upper end side of the valve body 18 and the other end rotatably held with respect to the collector main body 10 . However, a string-like (wire-like), chain-like, or link-like one may also be used.

Further, the valve body 18 for opening and closing the discharge port 17 is not limited to the one configured to be closed by the suction force of the suction source 2 and opened by the load of the granular material as described above. Both or one of the movement to the closing side and the opening side may be performed by an appropriate valve body driving section. Further, the lower end surface of the discharge pipe 14 may be a surface that is substantially orthogonal to the axial direction instead of being an inclined surface. In this case, the valve body 18 and the support member 19 that supports the valve body 18 may be appropriately deformed. Further, the valve body 18 is not limited to one that swings (rotates) with respect to the discharge pipe 14 to open and close. It may be opened and closed by being slid in a direction substantially orthogonal to the axial direction, and other various modes may be employed.

As shown in FIG. 3(b), the lid 20 is in the shape of a bottomed cylinder that opens toward the hopper part 11 and has a bottom at its upper end. The lid body 20 has substantially the same diameter as the substantially cylindrical portion of the hopper portion 11 . In the illustrated example, the lid body 20 has a slightly tapered shape toward the upper end side.
Further, in the present embodiment, a suction connecting tube 22 is connected to the lid 20 . The suction connection pipe 22 is connected to the side circumference of the lid 20 and has a structure in which a suction port 23 is opened on the inner circumference side of the lid 20 . The suction connection pipe 22 is not limited to one connected substantially orthogonally to the side circumference of the lid 20, and is connected to the inner circumference of the lid 20 such that the suction port 23 is opened substantially tangentially to the inner circumference of the lid 20. may be connected to Further, although the drawing shows an example in which the suction connection pipe 22 is provided in a substantially horizontal shape, it may be provided in an upward or downward slope as in the above case. Also, instead of connecting the suction connecting tube 22 to the side peripheral portion of the lid 20, it may be connected to the upper end portion that constitutes the bottom portion.

A flange portion 21 placed on the upper end portion of the hopper portion 11 is provided along the entire periphery of the lower end of the lid body 20 so as to protrude radially outward. . In the illustrated example, the flange portion 21 is positioned at the lower end portion of the lid body 20 so that an upwardly opening annular groove forming an engaging recess for hooking a fastener metal fitting provided on the hopper portion 11 side (not shown) is formed. An example of bending is shown. In addition, an example is shown in which the flange portion 21 is provided with a cylindrical portion that hangs downward on the outer peripheral side of the annular groove and surrounds the outer peripheral side of the upper end portion of the hopper portion 11 . The mode in which the lid body 20 can be freely opened and closed with respect to the upper end opening of the hopper portion 11 is not limited to the mode in which the cover body 20 is detachable as shown in the figure, but the mode in which the cover body 20 is connected to the upper end opening of the hopper portion 11 so as to be freely openable and closable by a rotary connecting member such as a hinge. etc., and other various modifications are possible.

The filter 30 is configured to be positioned between the introduction port 16 and the suction port 23 in the collector main body 10 .
As shown in FIGS. 2 and 4, the filter 30 has a first posture in which the first surface 31 side faces the upstream side in the passage direction of transported air, and a first posture in which the first surface 31 side faces the downstream side in the passage direction of transported air. A held portion 33 is provided which is held by the holding portion 25 of the collector main body 10 in each of the postures including the second posture directed toward . That is, as shown in FIG. 4(a), the filter 30 has the first surface 31 facing downward in the air passage direction, and the second surface 32 facing downstream in the air passage direction. and a first posture in which the first surface 31 side faces upward and the second surface 32 side faces downward as shown in FIG. 4(b). It is configured to be held by the collector main body 10 in each of two postures.

The filter 30 has a shape corresponding to the inner peripheral shape of the collector main body 10 when viewed in the passing direction (vertical direction) of transport air, that is, when viewed from above. That is, in this embodiment, as shown in FIG. 3A, the filter 30 has a substantially circular shape in plan view.
Moreover, in this embodiment, the held portion 33 of the filter 30 is provided at the outer peripheral edge portion. Further, the held portion 33 is provided on the outer peripheral edge portion of the filter 30 over the entire circumference. In the present embodiment, the held portion 33 is in the shape of an annular plate arranged with its thickness direction along the passing direction (vertical direction) of transport air. The held portion 33 may be configured so as to prevent air from flowing therethrough.

Further, in the present embodiment, the filter 30 includes a first tubular portion 34 provided so as to extend from the inner peripheral side of the held portion 33 in a first direction along the passage direction of the transport air, A second tubular portion 36 is provided so as to extend from the inner peripheral side of the distal end portion of the first tubular portion 34 toward the side opposite to the first direction. That is, the filter 30 includes a first cylindrical portion 34 extending from the inner peripheral side of the held portion 33 toward one side in the vertical direction, and a tip portion of the first cylindrical portion 34 extending from the inner peripheral side to the other side in the vertical direction. and a second cylindrical portion 36 extending toward. In addition, in this embodiment, the filter 30 further includes a third tubular portion 38 that extends in the first direction from the inner peripheral side of the distal end portion of the second tubular portion 36 . That is, the filter 30 includes the third tubular portion 38 extending from the inner peripheral side of the distal end portion of the second tubular portion 36 toward one side in the vertical direction.

As shown in FIG. 4(a), the dimension along the passage direction (vertical direction) of transport air from the held portion 33 to the tip end portions of the first tubular portion 34 and the third tubular portion 38 is as shown in FIG. With the filter 30 installed with the tip portions of the tubular portion 34 and the third tubular portion 38 directed upward (first posture), the tips of the first tubular portion 34 and the third tubular portion 38 are The dimensions are set appropriately so that the portion does not interfere with the lid body 20 . In the illustrated example, the first tubular portion 34 and the third tubular portion 38 are arranged in a state in which the filter 30 is installed with the tip portions of the first tubular portion 34 and the third tubular portion 38 facing upward. A gap is formed between the tip portion and the inner ceiling surface of the lid body 20 facing downward.
In addition, the dimension along the passage direction (vertical direction) of transport air from the held portion 33 to the tip of the second tubular portion 36 is, as shown in FIG. The tip portion of the second cylindrical portion 36 has an appropriate size so that it does not interfere with the lid body 20 when the filter 30 is installed with the portion facing upward (second posture). In the illustrated example, the filter 30 is installed with the tip of the second tubular portion 36 facing upward, as in the case described above, and the tip of the second tubular portion 36 and the lid 20 face downward. It is configured such that a gap is formed between it and the inner top surface.

In other words, a space for receiving a portion of the collector body 10 that is arranged to extend upward from the tubular portions 34, 36, and 38 above the holding portion 25 that holds the held portion 33. It is configured with In addition, cylindrical portions 34, 36, and 38 are arranged so as to extend downward from the holding portion 25 that holds the held portion 33 so that the upper limit of the storage level of the granular material in the collector main body 10 is reached. It may be set to a level at which the granular material does not come into contact with. In other words, the storable capacity of the collector main body 10 may be a capacity that takes into consideration the storage spaces of the cylindrical portions 34 , 36 , 38 .
Further, in the present embodiment, as shown in FIG. 4, the dimension along the passage direction (vertical direction) of transport air from the held portion 33 to the tip of the first cylindrical portion 34 and the distance from the held portion 33 to the first cylindrical portion 34 2 and the dimension along the same direction up to the tip of the cylindrical portion 36 are set to be approximately the same dimension. Also, the dimension along the same direction from the held portion 33 to the tip of the first tubular portion 34 and the dimension along the same direction from the held portion 33 to the tip of the third tubular portion 38 are substantially the same. and That is, when the filter 30 is installed, the tip of the first tubular portion 34 and the tip of the third tubular portion 38 are positioned at approximately the same height.

Further, in the present embodiment, each of the first tubular portion 34, the second tubular portion 36 and the third tubular portion 38 is configured to have a diameter that decreases toward the distal end side. That is, in the present embodiment, the first tubular portion 34, the second tubular portion 36, and the third tubular portion 38 are substantially truncated cone-shaped tubular portions. Further, the first cylindrical portion 34, the second cylindrical portion 36, and the third cylindrical portion 38 are provided substantially concentrically (substantially coaxially) with the held portion 33, which has an annular plate shape. .
The inclination angles of the first cylindrical portion 34, the second cylindrical portion 36, and the third cylindrical portion 38 are selected from the viewpoints of increasing the filtration area, improving the contact efficiency of the powdery or granular material, and cleanability. may be set at an appropriate angle. For example, in a side view (longitudinal cross-sectional view), the angle formed by the facing peripheral wall portions of the first cylindrical portion 34, the second cylindrical portion 36, and the third cylindrical portion 38 is 5 degrees to It may be about 45 degrees, and the example in the figure shows an example of about 25 degrees.

Further, in this embodiment, as shown in FIGS. 2(a) and 3(a), the distal end portion of the first cylindrical portion 34 and the proximal end portion of the second cylindrical portion 36 are separated from each other by the transport air. It is configured to be connected via an annular plate-shaped portion 35 arranged along the thickness direction in the direction (vertical direction). 2(b) and 3(a), the distal end portion of the second cylindrical portion 36 and the proximal end portion of the third cylindrical portion 38 are aligned with each other in the air passage direction (vertical direction). are connected via an annular plate-shaped portion 37 arranged along the thickness direction. Further, these annular plate-shaped portions 35 and 37 are used as sealing portions that block air circulation. In other words, these annular plate-shaped portions 35 and 37 are configured so that air cannot flow.
In addition, a disk-shaped portion 39 is provided at the tip of the third cylindrical portion 38, which is the innermost peripheral side, so that the thickness direction is along the passage direction (vertical direction) of the conveyed air. . Further, the disc-shaped portion 39 is used as a sealing portion that blocks air flow.

The first tubular portion 34, the second tubular portion 36, and the third tubular portion 38 described above constitute a filter portion, which allows passage of dust in addition to conveying air, while allowing passage of powdered or granular material as a raw material. is configured to prevent In the drawing, the first tubular portion 34, the second tubular portion 36, and the third tubular portion 38 are shown as punching metal having a large number of through holes. It may have a shape (mesh) or any porous shape that allows air to flow. The hole diameter and opening ratio of the through-holes of the first cylindrical portion 34, the second cylindrical portion 36 and the third cylindrical portion 38 may be appropriately determined according to the particulate material to be collected, the application, and the like. good. The annular plate-shaped portions 35 and 37 are formed by connecting annular plate-shaped bodies through which air cannot flow by welding or the like so as to connect the individually formed tubular portions 34, 36, and 38. Alternatively, it may be formed by welding or the like so as to seal the porous portions between the tubular portions 34, 36, and 38 formed integrally, and the like. , may be formed by various aspects.

The holding portion 25 that reversibly holds the filter 30 configured as described above is provided at the upper end portion of the hopper portion 11 as shown in FIG. In this embodiment, the holding portion 25 is provided in a packing 24 that is attached to the upper end portion of the hopper portion 11 and seals between the hopper portion 11 and the lid body 20 . The packing 24 is annularly provided on the upper end portion of the hopper portion 11 over the entire circumference. As shown in FIGS. 3B and 4, the upper end portion of the hopper portion 11 is provided with a flange portion 11a as an attachment portion to which the packing 24 is attached so as to protrude radially outward. there is The packing 24 is provided with a receiving groove 24a that opens radially inward for receiving the flange portion 11a.
Further, the holding portion 25 provided in the packing 24 is formed in a recessed step shape so as to open radially inward and upward. The holding portion 25 is partitioned by a flat mounting portion 25a facing upward on which the held portion 33 of the filter 30 is mounted, and a stepped wall portion 25b facing radially inward. . The stepped wall portion 25 b is configured to contact or be adjacent to the outer peripheral end surface of the held portion 33 of the filter 30 . That is, the inner diameter of the stepped wall portion 25 b is set to correspond to the outer diameter of the held portion 33 of the filter 30 . With such a configuration, displacement of the filter 30 in the horizontal direction can be suppressed.

The held portion 33 of the filter 30 described above is held so as to be sandwiched between the mounting portion 25a of the holding portion 25 and the facing portion 21a of the flange portion 21 of the lid 20 facing the mounting portion 25a. It is configured.
Note that the holding portion 25 provided in the collector main body 10 is not limited to the one provided between the hopper portion 11 and the lid body 20 as described above. For example, a projecting piece or an inward brim-like portion that protrudes radially inward and holds the held portion 33 of the filter 30 may be provided as the holding portion 25 on the inner peripheral surface of the hopper portion 11 . In this case, a pressing portion may be provided to press the upper side of the held portion 33 . Further, instead of providing the holding portion 25 on the hopper portion 11 side, the holding portion 25 may be provided on the lid body 20 side.

Further, the held portion 33 of the filter 30 is not limited to being provided over the entire circumference, and may be a plurality of projecting pieces provided at intervals in the circumferential direction. Further, the held portion 33 is not limited to a plate-like member having a thickness direction along the vertical direction, and may be configured such that projecting pieces protruding on both sides in the vertical direction are provided. Anything is fine. In this case, the holding portion 25 of the collector main body 10 may be provided with receiving grooves for receiving the upper and lower projecting pieces. Furthermore, the held portion 33 is not limited to being provided at the outer peripheral portion of the filter 30, and may be provided at an appropriate location such as the central portion in plan view. In this case, the holding portion 25 of the collector main body 10 may be appropriately deformed. Various other modifications are possible for the held portion 33 of the filter 30 and the holding portion 25 for reversibly holding the held portion 33 .

In addition, in this embodiment, as shown in FIG. 1, the collection device 1 includes a notification unit 13 that notifies when the filter 30 is to be reversed. The method of collecting the particulate material using the collecting device 1 is configured to notify when it is time to turn over the filter 30 .
The notification part 13 is a scale provided in the window part 12 provided in the collector main body 10 in this embodiment. The window 12 is elongated in the up-down direction, and allows visual confirmation of the storage level of the granular material collected in the collector main body 10 . The notification part 13 is provided so as to point to a relatively low position of the window part 12 . The position indicated by the notification unit 13 may be, for example, a position of 1/2 or less of the capacity of the collector body 10 (capacity that can be stored). An example provided so as to point to the location is shown.

Such an informing unit 13 is effective when the collection device 1 executes pneumatic transportation by batch transportation in which the transportation time is predetermined and constant.
That is, when the collection device 1 is operated and the suction source 2 is driven until a predetermined transportation time elapses, the valve body 18 is closed and the inside of the collector main body 10 becomes negative pressure, and the suction action causes the transportation source From 4, the powder material is pneumatically transported (one batch transport). The pneumatically transported granular material is separated from the transported air in the filter 30 and collected in the collector main body 10 . If such transportation is repeated, the filter 30 will gradually become clogged, and the transportation efficiency, that is, the transportation amount of the powdery or granular material per batch transportation, will gradually decrease. When the transport amount of the powdery or granular material in one batch transport decreases in this manner and drops to the position indicated by the notification unit 13, it is time for the filter 30 to turn over. When the reversal time comes, the lid 20 is opened and the filter 30 is reversed from the first posture to the second posture or from the second posture to the first posture.

The particulate material collection device 1 according to the present embodiment is configured as described above, so that it is possible to have a simple structure, and at the same time, it is possible to improve the maintainability of the filter 30. .
That is, the filter 30 has a first orientation in which the first surface 31 side faces the upstream side in the air passage direction, and a second orientation in which the first surface 31 side faces the downstream side in the air passage direction. It is configured to have a held portion 33 that is held by the holding portion 25 of the collector main body 10 in the posture. Therefore, if the filter 30 used in the first posture and to which fine powder or powder adheres or is clogged on the first surface 31 side is turned over to assume the second posture, fine powder adhered or clogged on the first surface 31 side is removed. and powder can be removed by conveying air. As a result, there is no need to provide a reverse injection mechanism or the like, and the need to periodically remove and clean the filter 30 can be reduced, and the maintainability of the filter 30 is improved in spite of its simple structure. be able to. In other words, the function of the filter 30 can be restored by inverting the filter 30 . Further, the fine powder and powder removed in this way can be discharged out of the collector main body 10 via the downstream side in the passage direction of the conveying air, so reattachment can be suppressed. .

In addition, in the present embodiment, the filter 30 includes a first tubular portion 34 extending in the first direction from the inner peripheral side of the held portion 33 of the outer peripheral edge portion, and a tip end portion of the first tubular portion 34. A second tubular portion 36 extending from the inner peripheral side toward the opposite side to the first direction is provided. Therefore, the filtering area of the filter 30 is effectively increased by the first tubular portion 34 and the second tubular portion 36 compared to a flat plate-shaped filter or a tubular portion extending only on one side. can be used, and the frequency of maintenance can be reduced.
Further, in the present embodiment, a third tubular portion 38 extending in the first direction from the inner peripheral side of the distal end portion of the second tubular portion 36 is further provided. Therefore, the filtration area of the filter 30 can be increased, and maintenance frequency can be reduced. In addition to the configuration in which the three tubular portions 34, 36, and 38 are folded up and down in this way, four or more tubular portions may be folded up and down.

In addition, in the present embodiment, the dimension from the held portion 33 to the tip of the first tubular portion 34 (and the third tubular portion 38) along the passage direction of the transport air, and the dimension from the held portion 33 to the second tubular portion The dimension along the same direction up to the tip of the shaped portion 36 is substantially the same dimension. Therefore, the tubular portions 34 (, 38) and 36 are provided so as to extend on both sides (both upper and lower sides) of the held portion 33 in the passage direction of the transport air. As a result, compared to a structure in which a tubular portion is provided so as to extend from the held portion 33 to only one side, the filtration area of the filter 30 is effectively increased while maintaining the first posture and the second posture. The space inside the collector body 10 can be effectively used in any of the postures. Further, when attaching and detaching the filter 30 to and from the collector main body 10, it is also possible to attach and detach by gripping the cylindrical portions 34 (, 38) and 36 extending on both sides of the held portion 33. There is no need to provide a grip portion, and the structure can be simplified.

Further, in the present embodiment, the first tubular portion 34 (and the third tubular portion 38) and the second tubular portion 36 are configured so that their diameters are reduced toward the distal end side. Therefore, the contact between the cylindrical portions 34 (, 38), 36 and the granular material is more effective than when the cylindrical portions 34 (, 38), 36 are straight cylindrical. Dust and the like adhering to the granular material can be effectively removed. In addition, it is possible to improve the cleanability when cleaning the filter 30 when changing materials or the like.

Further, in the present embodiment, the distance between the distal end portion of the first tubular portion 34 and the proximal end portion of the second tubular portion 36 (and the distal portion of the second tubular portion 36 and the proximal portion of the third tubular portion 38) end) is provided with an annular plate-shaped portion 35 (37) that constitutes a sealing portion that blocks the flow of air. Therefore, between the distal end portion of the first tubular portion 34 and the proximal end portion of the second tubular portion 36 (and the distal portion of the second tubular portion 36 and the proximal end portion of the third tubular portion 38), which is difficult to clean, It is possible to suppress adhesion and clogging of fine powder and powder in between), and it is possible to improve cleanability.
In addition, in this embodiment, a disk-shaped portion 39 that constitutes a sealing portion that blocks the flow of air is provided at the distal end portion of the third cylindrical portion 38 that is the innermost peripheral side. Therefore, even when three or more cylindrical portions 34, 36, 38 are provided in a folded-back manner and the disk-shaped portion 39 constituting the tip portion on the innermost peripheral side has a small diameter and becomes difficult to clean, It is possible to suppress adhesion and clogging of fine powder and powder at the site, and improve cleanability.

Further, in the present embodiment, a notification unit 13 for notifying the inversion time of the filter 30 is provided. Therefore, the user can be made aware of the inversion time of the filter 30 by the notification unit 13 . According to the collection method using such a collection device 1, it is possible to notify the inversion timing of the filter 30, so that the maintainability can be further improved.

Next, a modified example of the filter of the collecting device 1 having the above configuration will be described with reference to FIGS. 5 and 6. FIG.
Differences from the above example will be mainly described, and similar configurations will be given the same reference numerals, and their description will be omitted or simplified. In addition, descriptions of operations, functions, and the like similar to those of the above examples will be omitted or will be briefly described.

In this modified example, as shown in FIGS. 5 and 6, the filter 30A mainly differs from the above-described example in that the third cylindrical portion 38 is not provided.
That is, in this modified example, the filter 30A is configured to include the first tubular portion 34 and the second tubular portion 36 . In addition, in this modified example, the disk-shaped portion 37A at the tip of the second cylindrical portion 36, which is the innermost peripheral side, is used as a filter portion through which air can flow. With such a configuration, although it is possible to have a simple structure having two cylindrical portions 34 and 36 that are folded vertically, the diameter tends to be larger than that of the above-described structure. A disk-shaped portion 37A that constitutes a tip portion on the innermost peripheral side can also function as a filter portion.
In addition, the collection device 1 having such a filter 30A also has the same effect as the above-described example.

It should be noted that the disc-shaped portion 37A of the filter 30A in this modified example may be used as a sealing portion that prevents air from flowing in the same manner as described above. Further, at least one of the annular plate-shaped portion 35 of the filter 30A in this modification and the annular plate-shaped portions 35 and 37 of the filter 30 described above may be a filter portion through which air can flow.
In the above example, each of the cylindrical portions 34, 36, and 38 has a substantially truncated cone shape. A truncated pyramid may also be used. Further, in the above example, the annular plate-shaped portions 35, 37 are provided between the respective cylindrical portions 34, 36, 38, but such annular plate-shaped portions 35, 37 are It may be formed in a folded shape without being provided. Further, in the above example, the disk-shaped portions 39 and 37A are provided at the innermost peripheral tip portion. It is good also as the aspect which carried out.

Further, instead of having the diameters of the cylindrical portions 34, 36, and 38 gradually decrease toward the distal end side, at least one of them may have a substantially straight cylindrical shape. In addition, instead of the configuration in which the cylindrical portions 34, 36, and 38 are arranged in a fold-up manner in a plan view and arranged substantially concentrically, they are arranged in parallel or arranged in a grid pattern. etc. Further, the filters 30 and 30A are not limited to the filters 30 and 30A having portions protruding from the held portion 33 in both or one direction, and the filter portion may be substantially flat throughout. Various other modifications are possible for the filters 30 and 30A provided in the collecting apparatus 1 for particulate material according to the present embodiment.

Next, a modified example of the collecting device for particulate material according to the present embodiment will be described with reference to FIG.
Differences from the above example will be mainly described, and similar configurations will be given the same reference numerals, and their description will be omitted or simplified. In addition, descriptions of operations, functions, and the like similar to those of the above examples will be omitted or will be briefly described. Moreover, below, although 1 A of collection apparatuses provided with the above-described filter 30 are demonstrated, it is also possible to use the filter 30A which concerns on a modification.

As shown in FIG. 7, the powdery or granular material collecting device 1A according to the present embodiment includes a reversal time detection unit 29 for detecting a reversal time of the filter 30, and a reversal timing detection unit 29 that detects the reversal time. For example, a control unit 27 that executes control to notify the notification unit 13A. Also in the method of collecting the particulate material using the collecting device 1A, as shown in FIG. 7B, when it is time to turn over the filter 30, it is configured to notify.
Such a control unit 27 is composed of a CPU or the like, and may be provided in a control panel 26 installed at a proper place or a spaced place of the collection device 1A. The control panel 26 is connected to the control unit 27 via a signal line or the like, and stores various programs such as a control program for executing each operation described later, various preset operating conditions, various data tables, and the like. A storage unit 28 is provided, which stores the data and is configured from various memories and the like. In addition, the control panel 26 is further provided with a display operation unit which is connected to the control unit 27 via a signal line or the like and constitutes a display unit and an operation unit for setting, inputting, and displaying various settings. may be configured as follows.

Further, the suction source 2, the notification section 13A and the reversing timing detection section 29 are connected to the control panel 26 via signal lines and the like.
The notification unit 13A may be a lamp, a display unit, an acoustic output unit, or the like configured to notify by lighting, display, ringing, etc., instead of a scale capable of determining a decrease in the storage level as described above. good.
Further, the reversal timing detection unit 29 may be a level meter that detects that the one-batch transport amount collected in the collector main body 10 has decreased to a predetermined level. That is, in the same manner as described above, if transportation is repeated, the filter 30 is gradually clogged, and the transportation amount of the powdery or granular material in one batch transportation decreases. When the storage level of the powdery or granular material transported by one batch transport is lowered to a predetermined level, the controller 27 may determine that it is time to turn over and notify the annunciator 13A.

Further, as the reversal timing detection unit 29, a pressure gauge that detects the pressure in the pipelines 5, 3 from the transportation source 4 to the suction source 2 and the collector main body 10 may be used. In other words, in substantially the same manner as described above, if the transportation is repeated, the filter 30 is gradually clogged, so the pressure in the system fluctuates for each batch of transportation. If this pressure exceeds a predetermined threshold value, the control section 27 may determine that it is time to reverse, and may notify the notification section 13A.
In addition, instead of the pneumatic transportation mode in which the transportation time for each batch transportation is predetermined and constant as described above, the collector main body 10 is provided with an upper limit level meter for detecting the full level, and is reversed. The timing detection unit 29 may be a time measurement unit (clock unit) that measures the transportation time required to reach the full level. In other words, in substantially the same manner as described above, repeated transportation gradually clogs the filter 30, which lengthens the time required for one batch of transportation to reach the full level. If the time required for each batch of transportation exceeds a predetermined time, the control unit 27 may determine that it is time to reverse and notify the notification unit 13A.

Further, the reversal timing detection unit 29 may be a timer unit that measures the total operating time of the suction source 2 that is driven when pneumatically transporting the particulate material to the collector main body 10 . In other words, when the total operation time of the suction source 2 exceeds a predetermined time, the control unit 27 may determine that it is time to reverse and notify the notification unit 13A.
Further, as the reversal timing detection unit 29, a counting unit (counter unit) that counts the number of transportations to the collector body 10 may be used. In other words, when the number of transportations to the collector main body 10 exceeds a predetermined number of times, the control section 27 may determine that it is time to reverse and notify the notification section 13A. In these cases, the total operating time counted and the number of transports counted may be reset when a predetermined period of time elapses after notification by the notification unit 13A, or when an appropriate reset operation is performed. .

In addition, it is good also as the aspect provided with more than one of the above-described inversion time detection parts 29. FIG. Further, the inversion timing detection unit 29 for detecting the inversion timing of the filter 30 is not limited to the one described above. , or may have various other configurations.
Further, in the above example, the mode of pneumatic transportation by the suction action of the suction source 2 is shown. may be provided for pumping. In this case, an exhaust pipe, a dust collector for trapping dust and the like may be provided downstream of the filters 30 and 30A of the collector main body 10, or the like. In this case, the valve body 18 and the opening/closing mechanism for opening and closing the valve body 18 may be appropriately modified as necessary. The specific configuration of each member included in the collection devices 1 and 1A according to the present embodiment and the collection method executed using the same are not limited to the configuration described above, and various other modifications are possible.

REFERENCE SIGNS LIST 1, 1A Granule material collecting device 10 Collector main body 13, 13A Reporting part 25 Holding part 30, 30A Filter 31 First surface 33 To be held 34 First cylindrical part 35 Annular plate-like part (sealing stop)
36 second tubular portion

Claims (7)

It comprises a collector body for collecting pneumatically conveyed powdery or granular material, and a filter provided to be accommodated in the collector body for separating the powdery or granular material from the conveying air. ,
The collector main body holds a portion to be held provided on the filter, and the first surface side of the filter faces the upstream side in the passage direction of the transport air in the collector main body. A powder or granular material characterized by comprising a holding part for reversibly holding each of a first posture and a second posture in which the first surface side faces the downstream side in the passage direction of the conveying air. Material collector. In claim 1,
The filter includes a first tubular portion provided so as to extend in a first direction along the passage direction of the transport air from the inner peripheral side of the held portion provided on the outer peripheral edge portion; a second tubular portion provided to extend from the inner peripheral side of the distal end portion of the tubular portion in a direction opposite to the first direction. collection device. In claim 2,
a dimension along the passage direction of the transport air from the held portion to the tip of the first tubular portion, a dimension along the same direction from the held portion to the tip of the second tubular portion; are of substantially the same size. In claim 2 or 3,
A particulate material collecting device, wherein the diameters of the first cylindrical portion and the second cylindrical portion are tapered toward the distal ends thereof. In any one of claims 2 to 4,
A granular material characterized in that a sealing portion for blocking air circulation is provided in an annular shape between the distal end portion of the first cylindrical portion and the proximal end portion of the second cylindrical portion. Material collector. In any one of claims 1 to 5,
A collecting device for particulate material, comprising: a notification unit for notifying when the filter is to be reversed. A method for collecting a granular material using the collecting device for a granular material according to claim 6,
A method for collecting a particulate material, wherein a notification is given when it is time to turn over the filter.

Images