JP4730781B2 - Transported material separation device - Google Patents

Description

  The present invention relates to a conveyed product separating apparatus for separating a conveyed product sucked together with gas.

2. Description of the Related Art Conventionally, machine tools have a dust collector that collects cutting waste and dust generated during drilling. This dust collector includes a cyclone main body having a bellows-shaped peripheral surface portion along the circumferential direction, and a discharge pipe is connected to the peripheral surface portion of the cyclone main body, and a gas exhaust pipe perpendicular to the upper portion of the cyclone main body. Has been inserted. Then, the fluid discharged from the discharge pipe into the cyclone main body is swirled in the cyclone main body, and cutting waste and dust are separated at the bellows-shaped peripheral surface portion of the cyclone main body. In addition, a configuration is known in which cutting waste and dust separated by the cyclone main body are dropped to a dust collecting portion attached to the lower end side of the cyclone main end to collect the dust (for example, Patent Documents). 1).
JP 2001-88119 A (page 3-4, FIG. 3)

  However, in the dust collector of the above-described punching device, the fluid introduced into the cyclone main body is discharged to the gas discharge pipe without being decelerated, so that cutting waste and dust are discharged together with the fluid to the gas discharge pipe. There is a fear, and there is a problem that it is not easy to efficiently separate cutting waste and dust in the cyclone body.

  This invention is made | formed in view of such a point, and it aims at providing the conveyed product separation apparatus which can isolate | separate a conveyed product efficiently.

Invention 請 Motomeko 1 described, the conveyance object sucked together with the gas a conveying object separating device for separating from the gas, and the enlarged diameter portion whose inner diameter is enlarged upward, provided on the lower portion of the enlarged diameter portion A suction port for sucking gas and a conveyed product, a separation part provided at the upper part of the enlarged diameter part, a reduced diameter part provided at the upper part of the separation part and having an inner diameter decreasing upward, and a smaller diameter side of the reduced diameter part The suction port is provided to exhaust the sucked gas, the filter mechanism is provided in the upper part of the separation part to capture the transported material that has not been separated in the separation part, and the diameter-reduced part is opened with respect to the separation part for separation. It is a conveyed product separation apparatus equipped with the open mechanism which open | releases the upper part of a part.

According to the second aspect of the present invention, the intake port portion in the conveyed product separating apparatus according to the first aspect is provided in a state of being decentered from the center position toward the outer peripheral side at the lower portion of the enlarged diameter portion.

According to the invention 請 Motomeko 1 wherein the flow rate of the gas, so gradually decreases brought from the intake port side of the enlarged diameter portion to proceed to the separation portion side, the mass from the gas a large conveyance object, most flow rate It is possible to efficiently separate at the separation portion in which the gas is reduced, and only gas can be sucked and exhausted from the reduced diameter portion and the exhaust port. Further, the transported object that has not been separated in the separation part can be captured and removed by the filter mechanism, and the upper part of the separation part can be opened by the opening mechanism to facilitate maintenance of the filter mechanism.

According to the second aspect of the present invention, since the intake port portion is provided in an eccentric state on the outer peripheral side, a swirling upward flow is generated inside the enlarged diameter portion, and the mass of the gas is larger than that of the gas. The conveyed product can be efficiently separated by the centrifugal separation action.

  Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.

  The conveyed product separating apparatus 11 is a cyclone type dust collecting apparatus, and as shown in FIGS. 1 and 2, a suction tank that is a recovery unit having an elongated cylindrical inner peripheral surface having an axial direction along the vertical direction. It has twelve.

  As shown in FIGS. 1 to 3, a cylindrical swivel portion 13 is provided on the lower end side that is one end side in the axial direction of the suction tank 12. On the outer peripheral surface of the swivel portion 13, a tubular intake port portion 14 for sucking a conveyed product such as chips together with gas is integrally connected. An intake port 15 serving as an introduction port is provided at the distal end of the intake port unit 14, and the intake port 15 is connected to a conduit for collecting the conveyed product.

  The intake port portion 14 is eccentric to a position shifted from the center of the swivel portion 13 of the suction tank 12 so that the axial direction of the intake port portion 14 is along the tangential direction of the outer peripheral surface of the swivel portion 13. In other words, they are attached with an offset. In addition, the intake port portion 14 is attached in a state where the axial direction of the intake port portion 14 is aligned in the horizontal direction while being orthogonal to the axial direction of the suction tank 12. Therefore, the intake port portion 14 causes the intake air sucked from the intake port portion 14 into the turning portion 13 to flow along the inner peripheral surface of the turning portion 13, and the vertical direction in the turning portion 13 Is swirled in a spiral shape having an axial direction along the axis to form a swirling wind in a cyclone state.

  A housing 16 of an opening / closing device (not shown) having a conveyed product discharge port that can be opened and closed by a shutter (not shown) is connected to the lower side of the swivel unit 13 and is temporarily accumulated in the housing 16. The conveyed product can be discharged.

  On the upper side of the swivel portion 13, a diameter-expanded portion 17 whose inner diameter is increased in a tapered shape upward is concentrically connected. The diameter-expanded portion 17 has a tapered inner peripheral surface that expands outward from the upper end edge of the swivel portion 13 in the direction inclined by, for example, an angle of about 30 °. The intake port portion 14 is provided in a state where the lower portion of the enlarged diameter portion 17 is offset from the center position to the outer peripheral side.

  A cylindrical separation portion 18 is connected to the upper portion of the enlarged diameter portion 17. The separating portion 18 has an inner diameter dimension equal to the inner diameter dimension of the upper end edge of the enlarged diameter portion 17, and is formed in a cylindrical shape having an inner peripheral surface having a height dimension larger than the height dimension of the enlarged diameter portion 17. Has been. That is, the separation unit 18 draws the conveyed product from the swirling air sucked into the suction tank 12 and swirled by the swivel unit 13 and the swirl speed is reduced by the diameter expanding unit 17 to the lower end side of the suction tank 12. It is a part for axially separating toward.

  Further, an opening 19 is provided at the upper end portion of the separation portion 18. In addition, a filter mechanism 20 shown in FIGS. 4 and 5 is provided in the upper part of the separation unit 18 to capture the conveyed product that has not been separated in the separation unit 18.

  As shown in FIGS. 4 and 5, the filter mechanism 20 is attached in a state where a plurality of disk-like, for example, three filter bodies 21 are sandwiched between a pair of mesh bodies 22. These filter bodies 21 physically separate the conveyed matter such as fine chips that cannot be separated by centrifugal separation in the suction tank 12 from the suction air. Further, the pair of mesh bodies 22 are formed in a disk shape in plan view by welding linear steel frames in a state orthogonal to a lattice shape. One of the pair of mesh bodies 22 is inserted into the separation part 18 from the opening 19 of the suction tank 12 and is locked at a position below the opening 19. Further, the other of the pair of mesh bodies 22 is stacked and attached on the filter body 21 in a state where the filter body 21 is stacked on the one mesh body 22.

  The opening portion 19 of the separation portion 18 of the suction tank 12 has a peripheral surface portion 23 whose diameter is reduced by inclining inwardly from an upper end edge, which is one end side in the axial direction, of the separation portion 18 toward the upper side. A reduced diameter portion 24 having a concentric shape is attached so as to be openable and closable. The reduced diameter portion 24 is bolted to the opening 19 of the separation portion 18 of the suction tank 12 and is detachably attached. That is, the reduced diameter portion 24 is detachably attached to the opening portion 19 of the separating portion 18 to close the opening portion 19.

  The peripheral surface portion 23 of the reduced diameter portion 24 is formed in a tapered shape concentrically reduced from the upper end edge of the separation portion 18 of the suction tank 12 upward. Specifically, as shown in FIG. 4, the peripheral surface portion 23 of the reduced diameter portion 24 is reduced in diameter in a direction inclined at an angle of, for example, about 30 ° from the upper end edge of the separating portion 18 to the inside in the vertical direction. A tapered inner peripheral surface 25 is provided. That is, the inner peripheral surface 25 is a rectifying means that squeezes and rectifies the swirling air whose turning speed has been reduced by the separation unit 18 to rectify the turbulent flow of the swirling air in the reduced diameter portion 24.

  Further, a disk-like flat surface portion 26 is provided on the upper end side which is the small diameter side of the reduced diameter portion 24, and an exhaust port 27 is formed in the center of the flat surface portion 26. The exhaust port 27 communicates with a suction port of a blower fan (not shown) as suction means via an exhaust pipe, and the exhaust port of the blower fan is opened to the atmosphere via the exhaust pipe.

  An opening mechanism 31 that opens the reduced diameter portion 24 with respect to the separation portion 18 and opens the upper portion of the separation portion 18 is provided between the separation portion 18 and the reduced diameter portion 24. In the opening mechanism 31, a plurality of bolt mounting brackets 32 project radially from the outer peripheral surface along the upper opening edge of the separating portion 18 over the entire circumference, and the lower ends of the bolts 34 are connected to these bolt mounting brackets 32 by shafts 33. On the other hand, the flange portion 35 provided integrally with the lower portion of the reduced diameter portion 24 is provided with a fitting groove 36 for fitting with each bolt 34, respectively. Nuts 37 for fixing the fitting state are respectively screwed onto the upper portions of the respective bolts 34 fitted in the fitting grooves 36.

  A pair of attachment plates 38 are attached to the outer surface of the lower portion of the separating portion 18 and are reinforced by ribs 39. With this mounting plate 38, the suction tank 12 of the conveyed product separating apparatus 11 is installed at a predetermined height position where the collected conveyed product can be discharged.

  Next, the function and effect of the embodiment will be described.

  Conveyed materials such as chips discharged from a machine tool or the like are sucked from the intake port 14 connected to the swivel unit 13 in an offset state by the suction action of a blower fan (not shown) connected to the exhaust port 27. At the same time, the air is sucked into the swivel unit 13, and the suction air rises into the enlarged diameter portion 17 while swirling in the swirl unit 13. At this time, a centrifugal force corresponding to the mass acts on the swirling transported material, and heavy objects such as a transported material such as chips are centrifuged on the inner wall side of the swiveling portion 13 and the enlarged diameter portion 17. The

  In the enlarged diameter portion 17, the transported object moving along the inner wall of the enlarged diameter portion 17 is less affected by the air flow having a higher rising speed toward the central portion, and suction is performed as the cross-sectional area gradually increases. Since the wind rising speed itself gradually decreases, the force to raise the conveyed product together with the suction air decreases, and furthermore, the swirling speed of the conveyed material decreases due to contact with the inner wall of the enlarged diameter portion 17. The influence of the own weight acting on the conveyed product becomes large, and many conveyed items fall by the own weight and accumulate in the housing 16 of the switchgear (not shown).

  In the separation unit 18, the action of dropping the transported object continues along the inner wall surface, and the transported object is separated downward and the air is separated upward. When air passes through each filter body 21 attached to the upper end side of the separation unit 18, the fine transported material that could not be centrifuged is physically filtered and captured by the filter body 21 and separated from the air. After being squeezed and rectified gradually at the inner peripheral surface 25 of the reduced diameter portion 24, the reduced diameter portion 24 is discharged from the exhaust port 27 into the exhaust pipe portion 28.

  On the other hand, the transported object temporarily accumulated in the housing 16 is discharged downward from its discharge port by opening a shutter (not shown) of an opening / closing device (not shown).

  Also, when performing maintenance work such as eliminating clogging of the filter body 21, the nuts 37 of the opening mechanism 31 are loosened by rotating them, and the bolts 34 are tilted around the shaft 33 as a fulcrum to reduce the diameter. The flanges 35 of the part 24 are removed from the respective fitting grooves 36, and the reduced diameter part 24 is removed from the separation part 18, so that the upper end of the separation part 18 is opened and the filter body 21 and the mesh body 22 are detached.

  As described above, according to the above-described embodiment, the intake port portion 14 that sucks air into the suction tank 12 is attached to the offset position that is offset from the center of the swivel portion 13. While the air sucked from the air swirls along the inner peripheral surface of the swivel unit 13, a swirling upflow that rises along the inner wall surface of the enlarged diameter portion 17 is generated. Since the speed is reduced while turning along the inner wall surfaces of the turning portion 13 and the enlarged diameter portion 17 due to the action, the air flow can be efficiently separated from the rising and falling air flow due to its own weight.

  In particular, since the inner diameter of the inner peripheral surface of the enlarged diameter portion 17 gradually increases upward, the rising speed gradually decreases as the suction air advances upward in the enlarged diameter portion 17 and is sufficiently Since the reduced suction air is sent into the separation unit 18 where the flow velocity is the lowest, the conveyed product can be more reliably separated in the axial direction within the separation unit 18, and the conveyance sucked in with the air into the suction tank 12 Separation and collection of materials can be performed more efficiently.

  Further, by attaching the filter body 21 to the upper side of the separation part 18 of the suction tank 12, the fine parts that could not be separated in the suction air after the conveyed product was separated by the enlarged diameter part 17 and the separation part 18 Can be removed by physically filtering it with the filter body 21. Therefore, it is possible to prevent discharge of the conveyed product from the exhaust port 27 of the suction tank 12, and to reliably prevent adhesion or damage of the conveyed product to the fins or inner peripheral surface of the blower fan (not shown). .

  Further, by attaching a reduced diameter portion 24 having a peripheral surface portion 23 concentrically reduced in the upward direction to the upper opening portion 19 of the separation portion 18 of the suction tank 12, the wind passing through the filter body 21 can be obtained. The exhaust pipe portion 28 is gradually squeezed and rectified at the inner peripheral surface 25 of the peripheral surface portion 23 of the reduced diameter portion 24 and discharged into the exhaust pipe portion 28 while being suppressed from becoming a turbulent flow. The burden of the blower fan (not shown) attached to the can be reduced.

  Furthermore, the upper part of the separation part 18 is opened by the opening mechanism 31, and the maintenance of the filter mechanism 20 can be easily performed. At this time, the diameter-reduced portion 24 can be easily detached by simply rotating the nut 37 and moving the bolt 34 around the shaft 33 as a fulcrum.

  In the above embodiment, the gas sucked into the suction tank 12 of the conveyed product separating apparatus 11 is air, but the gas sucked into the suction tank 12 is a gas such as an inert gas other than air. It can also be. Moreover, although the conveyed product discharged | emitted from the automatic machine tool 2 was set as the structure conveyed with the suction | inhalation wind by a blower fan (not shown), solid conveyed items other than the conveyed product discharged | emitted from this automatic machine tool 2 or Even liquids can be used facing each other.

It is a front view which shows one Embodiment of the conveyed product separation apparatus which concerns on this invention. It is a side view which shows a separation apparatus same as the above. It is a top view which shows a part of separation apparatus same as the above. It is the front view which notched a part of separator same as the above. It is a top view which shows a part of separation apparatus same as the above.

11 Conveyance separator
14 Air inlet
17 Expanded part
18 Separation part
20 Filter mechanism
24 Reduced diameter section
27 Exhaust vent
31 Opening mechanism

Claims (2)

A transport object separating apparatus for separating a transport object sucked together with a gas from the gas,
An enlarged diameter part whose inner diameter is enlarged upward;
An intake port provided at the lower portion of the expanded diameter portion for sucking gas and a conveyed product;
A separation part provided at the upper part of the enlarged diameter part;
A reduced diameter portion provided at an upper portion of the separation portion, the inner diameter of which is reduced upward;
An exhaust port provided on the small-diameter side of the reduced-diameter portion and from which the sucked gas is exhausted;
A filter mechanism that is provided in the upper part of the separation unit and captures a transported object that has not been separated in the separation unit;
Conveyance object separating device you characterized by comprising a release mechanism for releasing the upper portion of the separating portion opens a reduced diameter portion relative to the separation unit. The intake port portion is provided in a state of being decentered from the center position to the outer peripheral side at the lower portion of the enlarged diameter portion.
The conveyed product separation apparatus of Claim 1 characterized by the above-mentioned.

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