JP2015139754A - filter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter unit for removing powders included in a ground product.SOLUTION: The filter unit has a platy first cover material 71 and a platy second cover material 73 provided separately in a lateral direction, and a large number of generally C-shaped filter materials 75 provided at set intervals. On the second cover material 73, three mounting columns 77 are erected on an outer periphery portion separately at equal intervals in a circumferential direction, and at a center part, a guiding material 79 formed by curving a plate piece in a generally C-shape is fixed. At a center part of the second cover material 73, a generally columnar strut 83 is erected, and a screw rod-shaped mounting column 84 is formed so as to project out from a center portion of the strut 83 to a left side. In the mounting column 77, a spacer material 87 and the filter material 75 are successively fitted, and the first cover material 71 is attached. A clearance S1 is formed between the filter materials 75 and 75.

Description

  The present invention relates to a filter unit that removes powder contained in a pulverized product or the like (those having a size smaller than a set size).

  When a synthetic resin material such as plastic is injection-molded, a pellet-shaped raw material is used. This pellet-shaped raw material is an unused product and is called a virgin material (new material).

  In addition, unnecessary synthetic resin members such as plastic, for example, sprue runners may be pulverized by a pulverizer to form a pulverized product, and the pulverized product may be mixed with a virgin material and injection molded.

  By the way, when forming a pulverized material with a pulverizer, powder may be generated. When the pulverized product containing this powder is mixed with a virgin material and injection molded, the powder melts quickly and the quality of the final product may be deteriorated. In addition, the virgin material may contain powder, which may affect the quality of the final product.

  The problem to be solved by the present invention is to provide a filter unit capable of removing powder having a size smaller than a set size from a pulverized product or the like with a simple configuration.

  The present invention has been made to solve the above problems, and the invention according to claim 1 is a conveyance in which a pulverized material and / or a virgin material is passed and a curved portion or a bent portion is provided at least partially. A plurality of gaps communicating with the inside and outside of the conveyance path are formed on the outer periphery of the conveyance path by laminating plate-like filter materials at intervals, at least in the curved part or the bent part. It is a filter unit characterized by being made.

  According to a second aspect of the present invention, there is provided a cover member that is spaced apart and parallel to each other, and is provided so as to bridge between the cover members, and has a curved portion or a bent portion at least at a part thereof. 2. A guide material disposed on a peripheral side, and the filter material having a curved portion or a bent portion at least partially stacked on the outer peripheral side of the transport path with a gap therebetween. It is a filter unit as described in.

  According to a third aspect of the present invention, there is provided a cover member provided in parallel and spaced apart, an arc-shaped guide member provided so as to bridge between the cover members, and a radially outer side of the guide member, The filter unit according to claim 1, further comprising an arc-shaped filter material stacked with a gap therebetween.

  According to a fourth aspect of the present invention, the outer peripheral portion of the conveyance path is configured by laminating two types of filter materials alternately spaced apart, and each filter material has an arc shape, and one filter The material and the other filter material have the same inner diameter, and the other filter material has an outer diameter smaller than that of the one filter material in at least a part of the outer periphery. It is a filter unit of Claim 3.

  The invention according to claim 5 is a filter device including the filter unit according to any one of claims 1 to 4.

  The invention according to claim 6 includes a case having a first pipe communicating with one end of the conveyance path and a second pipe communicating with the other end of the conveyance path, and the first pipe or the first pipe The suction air source is connected to one of the two pipes, and the pulverized material and / or the virgin material is fed into the conveyance path from the other pipe and discharged from the one pipe. This is a filter device.

  Furthermore, the invention according to claim 7 is the filter device according to claim 6, wherein the other pipe is provided with a filter portion in which a gap larger than the gap is formed.

  According to the filter unit of the present invention, it is possible to remove powder having a size less than a set size from a pulverized product or the like with a simple configuration.

It is a figure which shows one Example of the filter apparatus provided with the filter unit of this invention, and is a front view which shows the state attached to the collection | recovery tool. FIG. 2 is a rear view of FIG. FIG. 2 is a left side view of FIG. 1, partially showing a cross section. It is a top view of FIG. It is the figure which looked at the filter apparatus of FIG. 1 from the left side, and has shown the state which removed the lid | cover. It is a figure which shows the state which removed the filter unit from the state of FIG. It is AA sectional drawing of FIG. It is a disassembled perspective view of the filter apparatus of FIG. It is a left view which shows a filter unit. It is the perspective view which looked at the filter unit from back. It is the perspective view which looked at the filter unit from the front. It is a disassembled perspective view of a filter unit. It is a figure which shows the usage example 1 of the filter apparatus of FIG. FIG. 14 is a partially enlarged view of FIG. 13. It is a figure which shows the usage example 2 of the filter apparatus of FIG. It is a figure which shows the modification 1 of the filter apparatus of FIG. It is a figure which shows the modification 2 of the filter apparatus of FIG.

  Hereinafter, an embodiment of the filter unit of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a view showing an embodiment of a filter device provided with the filter unit of the present invention, and is a front view showing a state attached to a recovery tool. FIG. 2 is a rear view of FIG. 1 and is shown in cross section. FIG. 3 is a left side view of FIG. 1 and a part thereof is shown in cross section.
FIG. 4 is a plan view of FIG. FIG. 5 is a view of the filter device of FIG. 1 as viewed from the left side, and shows a state in which the lid is removed. 6 is a view showing a state in which the filter unit is removed from the state of FIG. 7 is a cross-sectional view taken along the line AA in FIG. FIG. 8 is an exploded perspective view of the filter device of FIG.

  The filter device 1 of the present embodiment includes a case 3 into which the pulverized material is fed and a filter unit 5 provided in the case 3 in the main part.

  The case 3 includes a rectangular box-shaped case main body 9 that opens leftward and downward, and a lid 11 that closes the left-side opening of the case main body 9.

A rectangular plate-shaped left side wall 13 is formed at the lower left side of the case body 9 along the front-rear direction. Specifically, the left side wall 13 having a rectangular plate shape is formed so as to bridge the left end portion of the lower end portion of the front wall 15 of the case body 9 and the left end portion of the lower end portion of the rear wall 17.
In other words, the case main body 9 is a rectangular box that opens downward, and the left side wall 13 is cut away leaving the lower end portion to form an opening 13a that opens to the left. It is supposed to be configured.

The case body 9 is formed such that the lower end portion of the front wall 15 projects forward.
Specifically, as shown in FIG. 7, the front wall 15 of the case body 9 includes a front wall upper portion 21 extending vertically downward from a front end portion of the upper wall 19 and a lower end portion of the front wall upper portion 21. The front wall inclined portion 23 is formed to be inclined forward as it goes downward, and the front wall lower portion 25 is formed to extend vertically downward from the lower end portion of the front wall inclined portion 23. .

  Further, the rear end portion 31 of the upper wall 19 of the case body 9 is formed as an inclined surface that is inclined downward as it goes rearward.

As shown in FIG. 8, the case main body 9 is formed with an attachment piece 35 protruding upward and outward in the front-rear direction from the left end portion thereof.
Specifically, a mounting piece 35 is formed projecting upward from the left end side of the upper wall 19 of the case body 9, a mounting piece 35 is formed projecting forward from the left end side of the front wall 15, and the left end of the rear wall 17 is formed. A mounting piece 35 is formed protruding rearward from the side.

  Thus, the attachment piece 35 is formed in the left end part of the case main body 9 continuously along the front end part, the upper end part, and the rear end part thereof. The mounting piece 35 is continuous with the left side wall 13 of the case body 9, and the mounting piece 35 and the left side wall 13 are flush with each other.

A strip-shaped sealing material 39 is continuously attached to the left side surface of the mounting piece 35 and the left side surface of the left side wall 13 of the case body 9.
That is, the seal material 39 is provided in an annular shape at the left end portion of the case body 9.

  A mounting piece 41 is continuously formed at the lower end portion of the case body 9 so as to protrude in the form of a rectangular plate in the front-rear and left-right directions along the outer peripheral portion. That is, the attachment piece 41 is formed in an annular shape at the lower end of the case body 9.

  Pipes 47 and 49 are attached to the front wall upper portion 21 and the front wall inclined portion 23 of the case body 9 so as to protrude forward.

  The first pipe 47 attached to the front wall upper portion 21 has a straight shape, the axis is horizontally disposed, and the base end portion thereof is fixed to the front wall upper portion 21. A through hole is formed in the front wall upper portion 21 so as to communicate with the inner hole of the first pipe 47.

  The second pipe 49 connected to the front wall inclined portion 23 has a straight shape in which a distal end portion 49a extends horizontally, while a proximal end portion 49b is curved downward as it goes rearward. The end portion is fixed to the front wall inclined portion 23. A through hole is formed in the front wall inclined portion 23 so as to communicate with the inner hole of the second pipe 49.

  In the present embodiment, the first pipe 47 and the linear tip portion 49a of the second pipe 49 are arranged in parallel.

  A rectangular frame-shaped upper mounting frame 53 is provided on the inner side of the front wall upper portion 21 of the case body 9. A rectangular frame-shaped lower mounting frame 55 is provided inside the front wall inclined portion 23 of the case body 9. Each mounting frame 53, 55 is provided such that its inner hole communicates with the inner hole of each pipe 47, 49.

  The front wall inclined portion 23 of the case body 9 is provided with a plate piece 57 that protrudes inwardly at a position below the lower mounting frame 55. The plate piece 57 is attached so as to incline downward as it goes backward. In this embodiment, the plate piece 57 is provided perpendicular to the front wall inclined portion 23.

  FIG. 9 is a left side view showing the filter unit. FIG. 10 is a perspective view of the filter unit as seen from the rear. FIG. 11 is a perspective view of the filter unit as viewed from the front. FIG. 12 is an exploded perspective view of the filter unit.

The filter unit 5 is detachably attached to the case body 9.
In the present embodiment, the filter unit 5 includes a plate-like first cover material 71 and a second cover material 73 that are spaced apart from each other on the left and right (up and down in FIG. 12), and the first cover material 71 and the second cover. A large number of filter members 75 are provided between the members 73 with a set interval.

The first cover material 71 and the second cover material 73 have a shape in which a part of a disk-shaped plate piece is cut out in a triangular shape. Specifically, each of the cover members 71 and 73 is notched downward from the upper outer peripheral end portion at a position slightly forward from the center of the disk material to form front upper portions 71a and 73a, from the lower end portion of the front upper portion. The front lower portions 71b and 73b are formed by being cut out so as to incline forward as going downward.
Thereby, as for each cover material 71 and 73, the outer side is formed in a substantially C shape, and the inner side is formed in the board piece formed in the substantially square shape.

  The angle formed by the front upper portions 71a and 73a and the front lower portions 71b and 73b of the cover members 71 and 73 corresponds to the angle formed by the front wall upper portion 21 and the front wall inclined portion 23 of the case body 9.

  The second cover member 73 disposed on the right side is provided with three mounting columns 77 standing on the outer peripheral portion at regular intervals in the circumferential direction. The attachment column 77 has a round bar shape, and the tip portion is formed in a screw bar shape. Each mounting column 77 has a base end fixed to the second cover member 73 and is provided along the left-right direction (up-down direction in FIG. 12).

In addition, a guide member 79 formed by bending a plate piece into a substantially C shape is fixed to the center portion of the second cover member 73. The guide material 79 is arranged concentrically on the second cover material 73.
Both end portions 79 a and 79 a of the guide material 79 are disposed inside the front upper portion 73 a and the front lower portion 73 b of the second cover material 73.

  Furthermore, a substantially columnar column 83 is erected at the center of the second cover member 73. One end of the column 83 is fixed to the center of the second cover member 73 and is provided along the left-right direction. A screw rod-like mounting column 84 is provided so as to protrude from the center of the column 83 to the left (upward in FIG. 12).

  The filter member 75 is a substantially C-shaped plate piece, and is formed with three through-holes 85 through which the attachment pillars 77 are passed at regular intervals in the circumferential direction. In the present embodiment, the outer diameter of the filter material 75 is the same as the outer diameter of the cover materials 71 and 73.

  After the plate-like spacer material 87 is passed through each mounting column 77 fixed to the second cover material 73, the filter material 75 is fitted into the mounting column 77, and the spacer material 87 and the filter material 75 are sequentially formed. Fit into the mounting column 77.

  In this embodiment, a disc-shaped washer 87 is used as the spacer material 87.

  After the set number of filter members 75 are attached to the attachment pillar 77, the first cover member 71 is attached. In this embodiment, the 17 filter members 75 are passed through the mounting column 77 with the washer 87 interposed therebetween. Further, both end portions 75a of the filter material 75 passed through the mounting column 77 are located inside the front upper portions 71a and 73a and the front lower portions 71b and 73b of the cover materials 71 and 73.

  The first cover member 71 has three through holes 89 formed at equal intervals on the outer peripheral portion, and a through hole 91 formed at the center. The first cover member 71 is attached by passing the mounting column 77 through the through hole 89 and passing the mounting column 84 through the through hole 91.

  Then, a wing nut 95 is screwed into the threaded rod-shaped tip of the mounting column 77 and the threaded rod-shaped mounting column 84 to fix the first cover material 71, the first cover material 71, the second cover material 73, The filter unit 5 is configured by integrating the filter material 75 and the spacer material 87.

Thus, the filter unit 5 is configured by sandwiching the filter material 75 and the spacer material 87 in this order between the first cover material 71 and the second cover material 73. At this time, the filter material 75 is arranged concentrically with the guide material 79.
Then, the filter material 75 and the spacer material 87 are sequentially passed through the mounting column 77 and laminated, so that a gap S1 corresponding to the thickness of the spacer material 87 is formed between the filter materials 75 and 75, and the filter unit 5 A large number of slit-like gaps S1 that are vertically elongated are formed on the outer peripheral portion of the outer peripheral portion so as to be separated from each other in the left-right direction.

  In this embodiment, a 1.6 mm thick washer is used as the spacer material 87, and a 1.6 mm gap S <b> 1 is formed between the filter materials 75 and 75. The filter material 75 has a thickness of 0.8 mm.

In the filter unit 5, an arcuate conveyance path R is formed by the filter material 75 and the guide material 79. Specifically, the filter unit 5 is formed with a C-shaped conveyance path R in a side view surrounded by the filter materials 75, 75, the guide material 79, and the cover materials 71, 73. A large number of gaps S1 are formed on the outer periphery of R.
In the present embodiment, the space surrounded by the filter materials 75, 75, the guide material 79, and the cover materials 71, 73 is defined as the transport path R, and the guide material 79 is disposed on the inner peripheral side of the arc-shaped transport path R. Are arranged, and filter materials 75,... 75 are arranged on the outer peripheral side.
The filter unit 5 is attached to the case body 9 so that the transport path R is continuous with the pipes 47 and 49.

Specifically, the filter unit 5 is accommodated in the case main body 9 so that the upper mounting frame 53 is fitted between the upper ends of the cover members 71 and 73 and the lower mounting frame 55 is fitted between the lower ends. Is done. As described above, the mounting frames 53 and 55 are provided between the left and right cover members 71 and 73 of the filter unit 5 so that the filter unit 5 is attached to the case body 9 in the state where the filter unit 5 is mounted. 5 is connected to the first pipe 47, and the lower end r2 of the transport path R is connected to the second pipe 49.
Further, in a state where the filter unit 5 is accommodated in the case main body 9, the plate piece 57 is close to the outer peripheral surface of the lower end portion of the filter unit 5.

  In a state where the filter unit 5 is fitted in the case body 9, a bolt 97 is attached to the plate piece 99 from the boundary between the front wall upper part 21 and the front wall inclined part 23 of the case body 9 to the outer peripheral part of the column 83 of the filter unit 5. The filter unit 5 is fixed to the case main body 9 by being screwed in via the screw. A block-shaped sealing material 101 is provided between the plate piece 99 and the case body 9 to fill a gap between the shaft portion of the bolt 97 and the hole of the case body 9 through which the shaft portion passes. .

  The lid 11 is attached to the case body 9 in a state where the filter unit 5 is fixed to the case body 9. The lid 11 has a rectangular plate shape, and a lower end portion of the lid 11 projects forward corresponding to the shape of the case body 9. In a state where the lid 11 is superimposed on the left end portion of the case body 9, the lid 11 and the attachment piece 35 of the case body 9 are fixed by the bolt 103 and the nut 105, and the lid 11 is attached to the case body 9. At this time, the sealing material 39 is interposed between the outer peripheral portion of the lid 11 and the attachment piece 35 of the case body 9.

  The filter device 1 having such a configuration is used by being attached to the collection tool 121 in the present embodiment.

  The collection tool 121 includes a cylindrical collection container 123 that opens upward, and a lid-like connecting member 125 that closes the upper end of the collection container 123.

  At the upper end of the collection container 123, hook members 127 are provided at two locations separated in the radial direction. The hook member 127 has a rectangular plate shape and is fixed to the outer peripheral surface of the collection container 123, and its upper end portion 127a is bent outward and bent.

  The connecting member 125 has a lid shape that opens downward, and has an octagonal shape in plan view. A rectangular opening 129 is formed at the center of the upper wall 128 of the connecting member 125. A sealing material 131 is annularly provided on the upper surface of the upper wall 128 so as to surround the opening 129. Further, an annular sealing material 133 is provided on the lower surface of the upper wall 128.

  The connecting member 125 is provided with two lock members 135 spaced in the radial direction.

  The lock member 135 includes a handle portion 137 that is rotatably provided on the connecting member 125, and a hook portion 139 that is rotatably provided on the handle portion 137 and is formed by forming a wire rod in a frame shape.

The filter device 1 is placed on the upper wall 128 of the connecting member 125 so that the opening at the lower end of the case body 9 communicates with the opening 129 of the connecting member 125. At this time, the seal member 131 is interposed between the attachment piece 41 of the case body 9 and the connecting member 125.
Then, the attachment piece 41 of the case body 9 and the upper wall 128 of the connecting member 125 are fixed by the bolt 143 and the nut 145, and the case 3 is fixed to the connecting member 125.

The connecting member 125 to which the filter device 1 is fixed is provided so as to cover the collection container 123 so as to cover the upper opening of the collection container 123. At this time, the sealing material 133 of the connecting member 125 contacts the outer peripheral edge of the upper end portion of the collection container 123. Then, the hook part 139 of the lock member 135 is hooked on the upper end part 127 a of the hook member 127, and the handle part 137 is pulled up, so that the connecting member 125 is fixed to the collection container 123.
In the illustrated example, two windows 147 are provided on the upper wall 128 of the connecting member 125.

FIG. 13 is a diagram illustrating a first usage example of the filter device according to the present embodiment.
FIG. 14 is a partially enlarged view of FIG.

The filter device 1 of this embodiment is used by being connected to a crusher 171 and an injection molding machine 173, for example. Specifically, one end of a hose 175 is connected to the first pipe 47 of the case body 9, and the other end of the hose 175 is connected to the pulverizer 171.
The pulverizer 171 in the illustrated example is a uniaxial pulverizer, and pulverizes sprue runners and unnecessary plastic products between a sickle-shaped rotary blade and a fixed blade, and the pulverized product is at the lower end. The storage tank 177 falls. The other end of the hose 175 is connected to the storage tank 177.

  One end of a hose 181 is connected to the second pipe 49 of the case body 9, and the other end of the hose 181 is connected to a switching valve 183, and the switching valve 183 and the hopper 185 of the injection molding machine 173 Are connected by a hose 187. A blower 191 serving as a suction air source is connected to the hopper 185.

  Further, the switching valve 183 and the tank 193 in which the virgin material is stored are connected by a hose 195.

  The sprue runner and the like charged into the hopper 199 of the pulverizer 171 are pulverized, and the pulverized product is stored in the storage tank 177. Then, when the blower 191 is operated in a state where the switching valve 183 is connected to the pulverizer 171 side, the pulverized material in the storage tank 177 is conveyed to the filter device 1 through the hose 175.

The pulverized material enters the filter unit 5 from the first pipe 47, passes through the conveyance path R of the filter unit 5, and is discharged from the second pipe 49 to the outside of the filter device 1.
Then, it passes through the hose 181 and the hose 187 and is sent into the hopper 185 of the injection molding machine 173.

  Further, the switching valve 183 is connected to the tank 193 side, the blower 191 is operated, and the virgin material is sent to the hopper 185 of the injection molding machine 173 by a predetermined amount. The injection molding machine 173 performs injection molding using the virgin material and the pulverized material as raw materials.

When the pulverized material pulverized by the pulverizer passes through the conveying path R of the filter unit 5, the powder contained in the pulverized material and smaller than the gap S1 of the filter unit 5 passes through the clearance S1 and passes through the gap S1. It is discharged outside. The discharged powder is stored in the recovery container 123 through the lower end opening of the case body 9 and the opening 129 of the connecting member 125.
In this way, only the pulverized material larger than the set size is fed into the hopper 185 of the injection molding machine 173. Thereby, a high quality molded product can be manufactured.

  FIG. 15 is a diagram illustrating a usage example 2 of the filter device according to the present embodiment.

  As shown in FIG. 15, the filter device 1 may be used by being connected to a mixer 211 and an injection molding machine 173. In the illustrated example, the first connection part 213 of the mixer 211 and the tank 193 in which the virgin material is stored are connected by a hose 215, and the second connection part 217 of the mixer 211 and the storage tank 177 of the pulverizer 171 are connected by a hose. 219 is connected.

  Further, the hose 221 connected to the first connection portion 213 is connected to the blower 191 via the air valve 223. A hose 224 connected to the second connection portion 217 is connected to the hose 221 via an air valve 225. Further, a hose 227 connected to the hopper 185 of the injection molding machine 173 is connected to the hose 221 via an air valve 229.

  The first pipe 47 of the filter device 1 and the mixer 211 are connected by a hose 231. The second pipe 49 of the filter device 1 and the hopper 185 of the injection molding machine 173 are connected by a hose 233.

  In this usage example 2, the virgin material and the pulverized material are once collected in the mixer 211 by the blower 191, and the mixture is conveyed to the hopper 185 of the injection molding machine 173 via the filter device 1. At this time, the powder contained in the mixture is removed by the filter device 1 as in the first use example.

  In the present embodiment, when powder is clogged in the gap S1 between the filter materials 75, 75, it may be sucked out with a vacuum cleaner or the like. In addition, if it cannot be removed by a vacuum cleaner, the nut 95 may be loosened to widen the gap S1 and remove the powder. In the present embodiment, the filter unit 5 can be easily disassembled and assembled and can be easily cleaned.

By the way, the filter apparatus 1 of a present Example can change the width | variety of the clearance gap S1 between the filter materials 75 and 75. FIG. Specifically, by using a spacer material 87 used in this embodiment and a spacer material having a different thickness, the width of the gap S1 between the filter materials 75 and 75 can be changed, and the change is easy. is there.
Thus, by using spacer materials having different thicknesses, the gap S1 can be adjusted according to the size of the powder to be removed.

  FIG. 16 is a diagram illustrating a first modification of the filter device in FIG. 1.

Next, a first modification of the filter device of the present embodiment will be described.
The filter device of the first modification is basically the same as the filter device of the above-described embodiment. Therefore, below, it demonstrates centering on the different part of both, and attaches | subjects and demonstrates the same code | symbol to a corresponding location.

  In this modification, the configuration of the filter unit 5 is different from that of the above embodiment. In the above embodiment, the filter material 75 having the same shape is laminated while sandwiching the spacer material 87, but in this modification, two types of filter materials are used.

  Of the two types of filter materials, one filter material 75 (first filter material 75) has the same shape as in the above embodiment.

The other filter material 255 (second filter material 255) is formed so that a part of the width is smaller than that of the first filter material 75. Specifically, like the first filter material 75, the second filter material 255 is a substantially C-shaped plate material, and three holes 257 through which the mounting columns 77 are passed are formed at equal intervals in the circumferential direction. Has been.
And the periphery of this through-hole 257 is left, and the outer peripheral edge part is dented inward in the rectangular shape in two places of the circumferential direction, and the recessed part 259 is formed.

In the present modification, the spacers 87, the first filter material 75, the spacer material 87, and the second filter material 255 are sequentially fitted and stacked on the mounting column 77 in this order.
That is, the first filter material 75 and the second filter material 255 are alternately passed through the mounting pillars 77 with the spacer material 87 interposed therebetween.

  In the filter unit 5 of this modification example configured as described above, a C-shaped conveyance path R is formed as in the above-described embodiment, and a large number of gaps S1 are formed on the outer peripheral portion so as to be separated from each other on the left and right. .

  In the present modification, the concave portion 259 is formed in the outer peripheral portion of the second filter material 255, so that it is easy to remove when the powder is clogged in the gap S1.

FIG. 17 is a diagram illustrating a second modification of the filter device in FIG. 1.
Next, a second modification of the filter device of this embodiment will be described.

  The filter device of Modification 2 is basically the same as the filter device of the above embodiment. Therefore, below, it demonstrates centering on the different part of both, and attaches | subjects and demonstrates the same code | symbol to a corresponding location.

  In the said Example, although it was set as the structure which removes the powder contained in a pulverized material and smaller than a setting dimension, in this modification 2, it is set as the structure which removes pulverized material larger than a setting dimension while removing powder | flour. That is, the pulverized product is classified into three types.

  In this modification, the first pipe 47 is formed to extend forward and then bulge upward. A plate-like filter portion 313 is attached to the bulging portion 311 with an inclination. In the filter portion 313, a plurality of slit-like gaps S2 that are vertically elongated are formed to be separated from each other in the left-right direction.

  The width of the gap S <b> 2 of the filter unit 313 is set larger than the gap S <b> 1 of the filter unit 5.

  A discharge pipe 319 extending downward is connected to the first pipe 47 on the front side of the filter portion 313. And the one end part of the hose 321 is connected to the front-end | tip part of the 1st pipe 47, and the other end part of this hose 321 is connected to the grinder, for example.

With such a configuration, the pulverized material conveyed through the hose 321 first passes through the filter unit 313. At this time, the pulverized product larger than the width of the gap S <b> 2 of the filter unit 313 cannot pass through the filter unit 313 and is collected through the discharge pipe 319.
And the crushed material which passed the filter part 313 passes the filter unit 5 similarly to the said Example, and the pulverized material smaller than the clearance gap S1 of the filter unit 5 is removed. Then, a pulverized product larger than the set dimension is sent to an injection molding machine or the like through the second pipe 49.

  Thus, according to the filter device of the present modification, the pulverized product can be divided into three sizes and has a function as a sizer.

The filter unit of the present invention and the filter device including the filter unit are not limited to the configurations of the above-described embodiments, and can be appropriately changed.
For example, the number of filter members 75 attached to the filter unit 5 and the thickness of the filter member 75 can be changed as appropriate. In the above embodiment, the washer 87 is arranged between the filter members 75 and 75 to form the gap S1, but a plate piece may be fixed to the filter member 75 to form the gap. In other words, a configuration may be adopted in which members in which a washer is fixed and integrated with the filter material 75 are laminated.

  Moreover, in the said Example, the upper end part r1 of the substantially C-shaped conveyance path R of the filter unit 5 is made into the inlet into which a crushed material is sent, and the lower end part r2 of the conveyance path R is an exit from which the crushed material is discharged. However, the entrance and exit may be reversed. That is, the pulverized material may be fed from the lower end r2 of the substantially C-shaped conveyance path R of the filter unit 5 and discharged from the upper end r1 of the conveyance path R.

  Further, in the above embodiment, the filter unit 5 is used in a standing state, but it may be used in a horizontal state. That is, in the said Example, although used so that the inlet_port | entrance and exit of a pulverized material might be arrange | positioned up and down, you may use it in the state which arrange | positioned the inlet_port | entrance and the exit in the horizontal direction.

  In addition, the angle formed by the arcuate conveyance path R is 225 ° in the above embodiment, but it is needless to say that the angle is not limited thereto. For example, it may be configured to have a semicircular arc shape, that is, a conveyance path for 180 °, and the distance in the circumferential direction of the conveyance path R can be appropriately changed.

  Further, the conveyance path R is not limited to the arc shape, but may be formed in other shapes depending on circumstances, for example, a substantially L shape or a substantially U shape. At this time, the filter materials 75 and 255 and the guide material 79 may be substantially L-shaped or substantially U-shaped, and the shapes of the cover materials 71 and 73 may be changed accordingly. At this time, it is preferable that the corner portions (bent portions) of the filter members 75 and 255 and the guide member 79 are curved in an arc shape. Thereby, a pulverized material can be smoothly conveyed along the conveyance path R.

  Further, in the above embodiment, the pulverized material or a mixture of the pulverized material and the virgin material is passed through the filter unit 5 to remove the powder, but only the virgin material is passed through the filter unit 5 to remove the powder contained in the virgin material. It is good also as composition to do. At this time, for example, the first pipe 47 of the filter device 1 and the tank in which the virgin material is stored may be connected by a hose so that only the virgin material passes through the filter unit 5. In this way, the pulverized material and / or virgin material can be fed from one end of the transport path R and discharged from the other end.

DESCRIPTION OF SYMBOLS 1 Filter apparatus 3 Case 5 Filter unit 9 Case main body 71 1st cover material 73 2nd cover material 75 Filter material 79 Induction material 87 Spacer material

Claims (7)

Comprising a conveyance path through which the pulverized material and / or virgin material is passed, and at least a curved portion or a bent portion is provided;
At least in the curved portion or the bent portion, the outer peripheral portion of the conveyance path is formed by laminating plate-like filter materials at intervals, so that a large number of gaps communicating between the inside and outside of the conveyance path are formed. A filter unit characterized by A cover material provided in parallel and spaced apart;
A guide member provided so as to bridge between the cover members, having a curved portion or a bent portion at least in part, and disposed on the inner peripheral side of the transport path;
2. The filter unit according to claim 1, further comprising: the filter material that is stacked on the outer peripheral side of the conveyance path with a gap and at least partially has a curved portion or a bent portion. A cover material provided in parallel and spaced apart;
An arc-shaped induction material provided so as to bridge between the cover materials;
The filter unit according to claim 1, further comprising: an arcuate filter material that is disposed on a radially outer side of the guide material and is stacked with a gap therebetween. The outer periphery of the conveyance path is configured by laminating two types of filter materials alternately spaced.
Each filter material has an arc shape, and one filter material and the other filter material have the same inner peripheral diameter.
The filter unit according to claim 3, wherein the other filter material is formed to have an outer diameter smaller than that of the one filter material in at least a part of the outer peripheral portion.   A filter device comprising the filter unit according to any one of claims 1 to 4. A case having a first pipe communicating with one end of the transport path and a second pipe communicating with the other end of the transport path;
A suction air source is connected to one of the first pipe and the second pipe, and pulverized material and / or virgin material is fed into the transport path from the other pipe and discharged from the one pipe. The filter device according to claim 5. The filter device according to claim 6, wherein the other pipe is provided with a filter portion in which a gap larger than the gap is formed.

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