JP4094115B2 - Tapping machine filtration device and grinding dust removal device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a filtration device and a grinding dust removing device for a ball grinder that remove grinding dust generated when grinding a spectacle lens.
[0002]
[Prior art]
Examples of a method for treating grinding water discharged by a conventional spectacle lens grinding apparatus (ball grinder) include a centrifugal separator, a squeezing machine, a multistage precipitation method, and a filtration method.
[0003]
In a processing apparatus using a centrifugal separator, suspended particles contained in a liquid are efficiently separated using centrifugal force.
[0004]
In the processing device using the press, the grinding water discharged from the lens grinding device is filtered, then dewatered, and the debris after dewatering is collected, so that the grinding dust becomes powdery and can be easily discarded.
[0005]
In the multistage precipitation type processing apparatus, the grinding waste is separated and separated through multiple stages of grinding water tanks, and then the supernatant liquid is drained.
[0006]
However, in a processing apparatus using a centrifugal separator or a squeezer, maintenance is cumbersome, time and labor is required, the cost of the apparatus and maintenance is great, and the processing apparatus itself is large, so it is placed in a spectacle store. It was difficult to do.
[0007]
In addition, the multi-stage precipitation type processing apparatus cannot process efficiently because the grinding scraps settle slowly.
[0008]
Accordingly, a filtration type processing apparatus that can reduce the time and labor required for maintenance, reduce the size of the processing apparatus itself, and efficiently remove grinding debris has been used in the lens grinding apparatus.
[0009]
[Problems to be solved by the invention]
However, the conventional grinding scrap removal device of the lens grinding device has a problem that the life of the filter for filtration is short even if the drainage tank is frequently maintained.
[0010]
When using a circulating processing device that uses the water in the drainage tank (grinding water tank) as grinding water, filters it, and reuses it as grinding water again, the more the lens is ground, the more suspended the wastewater, The amount of increases. If the waste water became dirty to some extent, the grinding water in the waste water tank had to be replaced, and at that time, the suspension was discharged to the outside as it was.
[0011]
However, if a suspension containing a large amount of grinding waste is discharged to the outside as it is, there is a risk that the drain pipe containing a large amount of solid matter will clog the pipe for the sewage pipe, especially at stores in buildings. Could be bigger.
[0012]
Further, in the case of a filtration type processing apparatus, the amount of grinding waste in the waste water is large, and therefore the filter is likely to be clogged. As a result, the amount of grinding water is drastically reduced due to clogging. Furthermore, cleaning of the housing (filter device container) when replacing the filter is troublesome, and there is a possibility that clothes and the like may be soiled.
[0013]
Furthermore, since waste water containing a large amount of grinding debris was used as grinding water, grinding debris, etc. could adhere to the lens surface after grinding, or the lens itself could be damaged by solid matter in the waste water. There was a risk of it.
[0014]
Therefore, an object of the present invention is to provide a filtering device and a grinding dust removing device for a ball grinder that hardly cause clogging of a filter even when a large amount of grinding dust is contained in the waste water.
[0015]
[Means for Solving the Problems]
  In order to solve the above-described problem, the ball grinder filtration device of the invention of claim 1A cylindrical container with a bottom and a transparent shape, a lid that closes the upper opening end of the cylindrical container, and an upper end portion disposed in the cylindrical container and having an upper end portion between the cylindrical container and the lid A transparent grinding waste collection bag held in between, a cylindrical filter disposed concentrically in the cylindrical container and having an upper end held by the lid and closed at the lower end, and the cylinder An air pump for supplying backwashing air into the cylindrical filter, supplying grinding water containing grinding waste between the grinding waste recovery bag and the cylindrical filter, and supplying the grinding water to the cylindrical filter The grinding water is filtered by the cylindrical filter by allowing it to pass through, and the grinding waste collected on the outer peripheral surface of the cylindrical filter is deposited in the grinding waste collection bag.It is characterized by that.
[0018]
  Claim2The grinding scrap removing device of the ball grinder of the invention is provided with a grinding water storage container for storing grinding water used when processing the spectacle lens,The grinding water in the grinding water storage container is filtered by the filtration device according to claim 1 and returned to the grinding water storage container.It is characterized by that.
[0019]
  Claim3The grinding dust removing device of the ball grinder of the invention of3. A grinding water removing apparatus for a ball grinder according to claim 2, wherein a slant is provided on a bottom surface of a grinding water storage container for storing grinding water, and suction of a grinding water pipe for sending grinding water containing grinding waste to the filtering device. The mouth was opened at the lower end of the bottom slope.It is characterized by.
[0020]
  According to a fourth aspect of the present invention, there is provided a bottomed cylindrical and transparent cylindrical container, a lid for closing an upper opening end of the cylindrical container, and an upper end portion disposed in the cylindrical container. A transparent grinding waste collection bag held between the cylindrical container and the lid, and is disposed concentrically in the cylindrical container and has an upper end held by the lid and a lower end closed. And an air pump for supplying backwashing air into the cylindrical filter, and supplying grinding water containing grinding waste between the grinding waste recovery bag and the cylindrical filter, The grinding water is permeated into the cylindrical filter so that the grinding water is filtered by the cylindrical filter and the grinding waste collected on the outer peripheral surface of the cylindrical filter is collected in the grinding waste recovery bag. A filtration device for a ball grinder that deposits and accumulates on the surface of the lid, and operates to vertically penetrate the central portion of the lid. A shaft and an upper end of the cylindrical filter are held between the free ends, and are used for holding a filter that is rotatably supported by the lid so that the free ends are opened by a pressing operation of the operating shaft. A link-type holding mechanism having a pair of links is provided, and the support link is opened by pushing down the operation shaft, and the filter is a ball grinder that drops the cylindrical filter into the grinding waste collection bag. To do.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
<First embodiment>
In FIG. 1, 1 is a lens grinding device (ball grinder), 2 is a processing chamber of the lens grinding device 1, 3 is a lens rotating shaft disposed in the processing chamber 2, and 4 is held by the lens rotating shaft 3. The processing lens 5 is a grinding wheel for grinding the periphery of the processing lens 4. Note that a known ball grinder is used as the lens grinding apparatus 1, but in this embodiment, only the minimum components necessary for the present invention are schematically shown for convenience of explanation.
[0024]
In this lens grinding apparatus 1, when the grinding wheel 5 is used to grind the periphery of a processed lens (unprocessed spectacle lens) 4 that is a dough lens, the grinding portion 6 of the processed lens 4 by the grinding wheel 5 is used for cooling. Grinding water is sprayed from the nozzle 7 for cooling.
[0025]
In addition, the lens grinding device 1 is connected to a lens grinding waste removal device 10 that removes grinding waste from the grinding water used for the cooling and circulates the grinding water from which the grinding waste has been removed for cooling again. ing.
[0026]
The lens grinding debris removal device 10 has a drain tank (grinding water storage container) 11 disposed below the lens grinding device 1, an upper end connected to the bottom of the ball grinder main body 2, and a lower end of the drain tank 11. It has a drain hose 12 inserted into one end. The upper end of the drainage hose 12 is disposed so that the grinding water sprayed from the nozzle 7 to the grinding part 6 can be recovered. Further, the upper surface (bottom surface) of the bottom wall (bottom portion) 11a of the drain tank 11 is inclined downward from one end portion (left end portion in the figure) toward the other end portion (right end portion in the figure), and the lower end portion of the inclination Grinding waste is accumulated on the top. Reference numeral 13 denotes waste liquid (grinding water) stored in the drainage tank 11. Note that the lower end of the drainage hose 11 is disposed at the approximate center of the waste liquid 13 in the vertical direction.
[0027]
In addition, the lens grinding waste removal device 10 has a filtration device 14 that filters the waste liquid 13 and returns it to the drainage tank 11, a pumping pump 15 that supplies the wastewater 13 of the drainage tank 11 to the filtration device 14, and a relatively dirty upper portion. A pumping pump 16 is provided for sending the waste liquid 13 in a portion not present to the nozzle 7 of the lens grinding apparatus 1 as grinding water. The pumping pump 15 is placed on the bottom wall 11 a so as to be positioned at the right end of the drainage tank 11. The pumping pump 16 is disposed at the upper part on the right end side of the drainage tank 11, and the suction side is inserted into the upper part of the waste liquid 13. The discharge side of the pumping pump 16 is connected to the nozzle 7 via a hose 16a. Reference numeral 15 a denotes a suction port of the pumping pump 15. The suction port 15 a is disposed at the bottommost part of the drainage tank 11.
[0028]
As shown in FIG. 2, the filtering device 14 includes a bottomed cylindrical and transparent cylindrical container 17, and a bottomed cylindrical and transparent grinding waste collecting bag 18 disposed along the inner wall surface of the cylindrical container 17. A lid body (lid portion) 19 for closing the upper opening end of the cylindrical container 17 and a cartridge-type cylindrical filter (filtering portion) 20 disposed concentrically in the upper portion of the cylindrical container 17 are provided. A space 18a as a grinding dust settling portion is formed below the center of the grinding scrap collection bag 18. By providing the space 18a, the life of the cylindrical filter 20 can be extended. The cylindrical filter 20 is open at both ends as shown in FIGS. 2, 3 and 5A. Reference numeral 17 a denotes an outer flange provided at the upper end of the cylindrical container 17.
[0029]
As shown in FIGS. 2 and 3, the lid 19 includes a lid main body 19a having a circular back surface, a bottom wall 19b provided at the lower portion of the lid main body 19a, and a double inner / outer connection to the bottom wall 19b. The cylindrical portions 19c and 19d, the outer flange 19e provided at the lower end of the cylindrical portion 19d, the connecting cylinder portions 19f and 19g formed on the lid main body 19a, and one end at the center of the lid main body 19a. It has a fixed filter fixing shaft 21. In addition, the connecting cylinder part 19f has an internal passage 19f 'located between the cylindrical parts 19c and 19d and opened on the lower surface of the bottom wall 19b.
[0030]
Moreover, the connection cylinder part 19g is connected in the cylindrical part 19c via space 19a 'in the lid main body 19a. The upper end portion of the grinding waste collection bag 18 is folded outward from the upper end of the cylindrical container 17, and the outer flange 19 e of the lid 19 is collected on the outer flange 17 a of the cylindrical container 17. They are aligned via the folded portion of the bag 18. In addition, the outer flanges 19e and 17a have a U-shaped cross section and are detachably fixed by the fastening band 22, and sandwich the folded portion of the grinding waste collection bag 18. The fastening band 22 is formed by dividing a circular band into two parts and fastening the split end parts so as to be detachable with bolts and nuts not shown.
[0031]
The tubular filter 20 is detachably attached to the lid body 19 through a filter fixing shaft 21, a bottom cap 23 with a flange, and a wing nut 24. That is, by inserting the cylindrical portion 19c of the lid 19 into the upper end portion of the cylindrical filter 20 from the state of FIG. 2 and 3 are fitted to the outer periphery of the cylinder 19c, and a bottom cap 23 with a flange is fitted into the lower end of the cylindrical filter 20 as shown in FIGS. The cylindrical filter 20 is closed as shown in FIG. 5 (b) by screwing a wing nut 24 onto the screw portion 21a of the filter fixing shaft 21 that passes through the bottom cap 23 as shown in FIGS. 19 is detachably attached.
[0032]
A space 25 is formed between the grinding waste collection bag 18 and the cylindrical filter 20, and a passage 19 f ′ of the connecting cylinder portion 19 f is opened in this space 25. Further, one end of a waste liquid guide hose 26 is connected to a discharge port (not shown) of the pumping pump 15, and the other end of the waste liquid guide hose 26 is connected to a connecting cylinder portion 19 f of the lid 19.
[0033]
Further, one end of a hose 27 is connected to the connecting cylinder 19g of the lid 19, and the other end of the hose 27 is a valve of a three-way switching valve (flow path switching means) 28 as shown in FIG. It is connected to a first connection port 29 provided on the main body 28a. Further, the second and third connection ports 30 and 31 of the valve body 28a are respectively provided with one end portions of an air discharge hose 33 and a clean grinding water return hose (clean grinding water pipe) 34 of a manual air pump (back washing means) 32. It is connected.
[0034]
A clean grinding water spray nozzle (spraying member) 34a is attached to the other end of the clean grinding water return hose 34 as spraying means. The clean grinding water spray nozzle 34 a is disposed above the liquid level of the waste liquid 13 at the approximate center of the drainage tank 11. Moreover, the connection ports 30 and 31 of the three-way switching valve 28 are provided so as to be opened and closed by the rotary valves 35 and 36, respectively. The rotary valves 35 and 36 are provided to be opened and closed by operation knobs 37 and 38, respectively. The rotary valves 35 and 36 may be formed in a cylindrical shape by providing a passage b in a spherical body (valve body) a as shown in FIG. The opening and closing of the valve bodies 35 and 36 having this structure is as shown in FIGS. 4 (c) and 4 (d). That is, in the case of FIG. 4C, the passage b communicates with the connection port 30 (or 31) and the rotary valve 35 (or 36) is opened. In the case of FIG. 4D, the connection port 30 (or 31) is closed with respect to the passage b, and the rotary valve 35 (or 36) is closed.
[0035]
Further, in the present embodiment, the connection port 30 is illustrated in a state of facing downward due to the arrangement of the air pump 32 and the illustrated relationship. However, in practice, the connection port 30 is directed upward so that when the connection port 30 is opened by the rotary valve 35, the clean grinding water in the three-way switching valve 28 flows into the air pump 32 side. It is good to prevent.
[0036]
Next, processing of the grinding water and grinding waste of the ball grinder having such a configuration will be described.
[0037]
Since the technique of grinding the periphery of the lens 4 to be processed by the lens grinding device (ball grinder) 1 is well known, the description of the detailed processing is omitted. When grinding into a target lens shape with the grinding wheel 5 of the lens grinding apparatus 1, the pumping pump 16 is operated to supply cooling water to the grinding part 6 by the grinding wheel 5 of the lens 4 to be processed. Spray from 7 to cool.
[0038]
When this grinding water cools down the grinding part 6, the grinding waste of the to-be-processed lens 4 ground with the grinding wheel 5 is washed away, and it flows below the to-be-processed lens 4. FIG. The flowing grinding water is drained into the drain tank 11 via the drain hose 12. During this drainage, bubbles 13 a of the grinding water are generated on the surface of the drainage tank 11. Accordingly, an antifoaming agent is mixed in advance in the waste liquid 13 in the drain tank 11 at an appropriate ratio.
[0039]
The grinding water flowing into the drain tank 11 becomes the waste liquid 13 and is sucked from the suction port 15a of the pumping pump 15. At this time, grinding scraps flowing into the drain tank 11 partially settle on the bottom of the drain tank 11, that is, the bottom wall 11 a, and follow the inclination of the bottom wall 11 a by the suction action of the pumping pump 15. Move from left to right.
[0040]
The pumping pump 15 flows the sucked waste liquid (grinding water) 13 into the filtration device 14 via the waste liquid guide hose 26. The inflowing waste liquid is filtered by the cylindrical filter 20 and flows into the inside. At this time, the grinding waste in the waste liquid is collected on the outer peripheral surface of the cylindrical filter 20 and becomes a lump (sludge) A and flows down to the bottom, and accumulates on the bottom of the grinding waste collection bag 18 for grinding. A grinding waste layer B is formed at the bottom of the waste collection bag 18.
[0041]
Thus, by providing the space 18a as a settling portion so that a grinding waste layer B is formed at the bottom of the grinding waste collection bag 18, the amount of grinding waste (lumps A) attached to the cylindrical filter 20 is reduced. Can do.
[0042]
As a result of this action, the clean grinding water cleaned by the cylindrical filter 20 is guided to the clean grinding water spray nozzle 34a via the hose 27, the three-way switching valve 28, and the clean grinding water return hose 34, and clean grinding water. It sprays toward the waste liquid 13 surface of the drain tank 11 from the spray nozzle 34a. At this time, when the foam 13a of the grinding liquid is generated on the waste liquid 13, the foam 13a is caused by the mist-like clean grinding water sprayed from the clean grinding water spray nozzle 34a and the defoaming agent contained in the clean grinding water. Defoamed.
[0043]
In order to remove the grinding waste, first, the operation of the pumping pump 16 is stopped, while the operation knobs 37 and 38 of the three-way switching valve 28 are rotated to move the rotary valves 35 and 36 from the position of the solid line. The connection port 30 of the three-way switching valve 28 is opened by the rotary valve 35 and the connection port 31 is closed by the rotary valve 36 by rotating to the position of the wavy line.
[0044]
Next, in this state, by operating the operating handle 32a of the manual air pump 32 up and down, outside air is taken into the air pump 32 and compressed, and the compressed air is supplied to the hose 33, the three-way switching valve 28, and the hose 27. And back flow into the cylindrical portion 19c of the lid body 19. The air that has flowed back into the cylindrical portion 19c flows out from the inside to the outside inside the cylindrical filter 20, and the grinding scraps a adhering to the outer surface of the cylindrical filter 20 are peeled off from the outer surface and precipitated downward. The removal of the grinding waste by such a backflow of air is performed until the separation of the grinding waste from the outer surface of the cylindrical filter 20 is reduced.
[0045]
Thereafter, by rotating the operation knobs 37, 38 of the three-way switching valve 28, the rotary valves 35, 36 are rotated back from the wavy line position to the solid line position, and the connection port 30 of the three-way switching valve 28 is returned. Is closed by the rotary valve 35, and the connection port 31 is opened by the rotary valve 36. When the pumps 15 and 16 are operated in this state, the grinding water is circulated again as described above, and the grinding waste in the waste liquid (grinding water) is removed again by the cylindrical filter 20 so that clean grinding water is obtained. It is used again as cooling water for cooling.
[0046]
Then, the clean grinding water on the upper portion of the waste liquid 13 is sucked by the pumping pump 16 and is introduced from the pumping pump 16, and then sprayed from the nozzle 7 to the grinding unit 6 again through the hose 16a and circulates. By using the two pumps 15 and 16 in this way, the maintenance of the drainage tank 11 is facilitated.
[0047]
In such a circulation of the grinding water, when a certain amount of grinding waste has accumulated on the bottom of the grinding waste collection bag 18 of the filtration device 14, the fastening band 22 is removed, and the lid 19 is attached to the cylindrical container 17 as shown in FIG. After removing from the upper end, the grinding waste collection bag 18 is extracted from the cylindrical container 17, and the grinding waste is collected together with the grinding waste collection bag 18 and discarded. The accumulated amount of grinding waste can be visually recognized from the outside because the cylindrical container 17 and the grinding waste collection bag 18 are transparent. In addition, by providing the grinding waste collection bag 18 in this way, grinding waste can be collected and discarded without soiling the hands.
[0048]
In the grinding water circulation cycle as described above, when grinding dust adheres to the outer surface of the cylindrical filter 20 and the cylindrical filter 20 is clogged, the grinding dust adhered to the outer surface of the cylindrical filter 20. By removing, the cylindrical filter 20 can be used again.
[0049]
Further, after the fastening band 22 is removed and the lid 19 is removed from the upper end portion of the cylindrical container 17 as shown in FIG. 7, the grinding waste collection bag 18 is removed from the cylindrical container 17, and the wing nut 24 is attached to the filter fixing shaft. The cylindrical filter 20 can be removed from the cylindrical portion 19 c of the lid body 19 by removing from the cylindrical body 21. Therefore, when the clogged state cannot be eliminated even by removing the grinding waste of the cylindrical filter 20 by such air backflow, the clogged cylindrical filter 20 is removed from the lid 19 and replaced with a new one. To do.
[0050]
In addition, the lifetime of a cylindrical filter can also be extended by preparing another cylindrical filter and using it alternately.
[0051]
<Second embodiment>
Although the air pump 32 is a manual type, an electric air pump using a motor or a solenoid may be used. In addition, an air pump that turns ON / OFF the power of the pumps 15 and 16 using a clutch is used, and the compressed air of the air pump is accumulated in the compressed air tank at a predetermined pressure (set pressure) during the grinding water circulation. This pressure may be used to remove grinding debris from the cylindrical filter 20. In this case, the pressure in the compressed air tank is detected by a pressure sensor, and when the pressure reaches a set value, the clutch is disengaged and the compression by the air pump is stopped.
[0052]
In addition, by using the electric air pump as described above, when the pumping pumps 15 and 16 are stopped, the electric air pump is operated for a predetermined time so that the compressed air flows back into the cylindrical filter 20 as described above. Alternatively, it is also possible to automatically remove grinding dust adhering to the outer peripheral surface of the cylindrical filter 20 by allowing the air in the compressed air tank to flow backward into the cylindrical filter 20 as described above. In this case, the connection ports 30 and 31 of the three-way switching valve 38 required for the backflow of air as described above are opened and closed by a solenoid rather than manually. That is, when the pumps 15 and 16 are stopped, the solenoid is controlled first, and the rotary valves 35 and 36 are controlled to rotate by this solenoid, so that the connection of the three-way switching valve 38 necessary for the backflow of air as described above is established. After the ports 30 and 31 are opened and closed, the electric air pump is operated for a predetermined time to cause the compressed air to flow backward into the cylindrical filter 20 as described above, or the compressed air tank air is formed into a cylindrical shape as described above. It is advisable to reversely flow into the filter 20. This control is performed by a control circuit (not shown) of the lens grinding apparatus 1. Thus, since the grinding waste on the outer peripheral surface of the cylindrical filter 20 is always removed when the pumps 15 and 16 are turned off, the user looks only at the amount of grinding waste accumulated in the grinding waste collection bag 18. It can be used without much concern about clogging of the tubular filter 20.
[0053]
<Third embodiment>
Further, in the embodiment described above, the bottom wall 11a of the drain tank 11 is inclined, and the suction port 15a of the pumping pump 15 is disposed at the lowest inclined position, so that the grinding settles on the bottom wall 11a. Although scraps can be collected and sucked, grinding scraps can be collected well without necessarily inclining the bottom wall 11a. That is, for example, as shown in FIG. 8, the suction port 15a is flat and has a large area, so that grinding scraps on the bottom wall 11a of the drain tank 11 can be sucked into the suction port 15a from the entire bottom wall 11a. It becomes. Further, the suction port 15a has a peripheral edge portion 15c that is widened toward the end. The suction port 15a is connected to a pumping pump (not shown) via a grinding water pipe 15b, and this pumping pump is disposed outside the drainage tank 11. In this case, since the grinding waste can be sucked by the wide-mouthed suction port 15a, the collective suction processing of the grinding waste sinking to the bottom of the drainage tank 11 can be easily performed. In addition, since the pump is disposed outside the drain tank 11, maintenance of the drain tank 11 and the pump is facilitated.
[0054]
<Fourth embodiment>
In the above-described embodiment, after the waste liquid 13 in the drain tank 11 is cleaned by the filtration device 14, the clean grinding water is returned to the upper part of the drain tank 11, and the waste liquid in the upper part of the drain tank 11 is used as the grinding water. Although it is made to circulate to the nozzle 7, it does not necessarily need to be constituted in this way. For example, as shown in FIG. 9, a clean grinding water tank 40 is provided separately from the drainage tank 11, and clean grinding water cleaned by the filtering device 14 is stored in the clean grinding water tank 40. The pumping pump 16 may be disposed on the clean grinding water 41 in the tank 40 so that only the clean grinding water is circulated through the nozzle 7 purely. Further, a partition wall 42 is provided in the drain tank 11, and the waste tank 11 is partitioned into a waste liquid chamber 43 and a clean grinding water chamber 44 partitioned by the partition wall 42. The grinding water is drained, the waste liquid in the waste liquid chamber 43 is supplied to the filtration device 14 by the pumping pump 115, and the clean grinding water cleaned by the filtration device 14 is stored in the clean grinding water chamber 43. The clean grinding water stored in the water chamber 43 may be pumped up and circulated to the nozzle 7 by the pump 16. In these cases, since the clean grinding water is not mixed with the waste liquid, the preferred grinding water from which the grinding waste has been removed can be circulated to the nozzle 7.
[0055]
<Fifth embodiment>
Further, in the embodiment described above, the waste water of the grinding water from the lens grinding apparatus 1 is temporarily stored in the drainage tank 11, and then the stored waste liquid is filtered with a filtration device to obtain clean grinding water. However, it is not necessarily limited to this configuration. For example, as shown in FIG. 11, a filter (filtering unit) 45 is provided at the lower end of the drainage hose 12, and the wastewater of grinding water drained from the lens grinding apparatus 1 through the drainage sill 12 is directly filtered by the filter 45. The filtered and cleaned clean grinding water 11 is discharged to the clean grinding water tank 46, and the clean grinding water 47 in the clean grinding water tank 46 is pumped up and supplied directly to the nozzle 7 by the pump 16. May be. In this case, the pumping pump 15 and the filtering device 14 are not necessary, and the configuration is simplified. Further, the grinding scraps may be sucked directly from the filter 45 by a pump.
[0056]
<Sixth embodiment>
Further, in the above-described embodiment, the tubular filter 20 must be held by the tubular portion 19c of the lid 19 using the filter fixing shaft 21 and the wing nut 24 and mounted in such a manner that it can be forced. However, it is not necessarily limited to this. For example, as shown in FIGS. 12 to 14, a link type holding mechanism 50 may be provided on the lid body 19, and the lid body 19 may be held on the lid body 19 by the link type holding mechanism 50.
[0057]
The link type holding mechanism 50 includes a coil spring (having an flange 51a provided at the upper end and penetrating the central portion of the lid body 19a, and a flange disposed between the flange 51a and the upper surface of the lid body 19a. Elastic member) 52 and a seal ring (seal member) 53 held by the lid body 19a and interposed between the outer periphery of the operation shaft 51 and the lid body 19a.
[0058]
Further, the link holding mechanism 50 includes a pair of filter holding links 54 and 54 provided with holding claws 54a and 54a at their free ends and disposed in the lid main body 19a, and base ends of the links 54 and 54, respectively. Is supported at the lower end portion of the operation shaft 51, a pair of support links 55, 55 disposed in the lid main body 19a corresponding to the links 54, 54, and a support link 55. , 55 are rotatably supported on the lid main body 19a by the support shafts 56, 56, and the lower ends of the support links 55, 55 are pivoted to the free end portions of the links 54, 54. It has the coupling shafts 57 and 57 which hold | maintain coupling | bonding.
[0059]
The cylindrical filter 20 held by the lid body 19 using the link type holding mechanism 50 having such a configuration has an outer flange 20a for claw engagement at the upper end. The bottom cap 22 may be fixed to the lower end portion of the cylindrical filter 20 by adhesive bonding, or may be screwed into the lower end portion of the cylindrical filter 20 and fixed.
[0060]
In order to hold the cylindrical filter 20 on the lid 19 using the link type holding mechanism 50 having such a configuration, the operating shaft 51 is pushed down against the spring force of the coil spring 52 as shown in FIG. With the holding claws 54a, 54a of 54 opened, the upper end of the tubular filter 20 is fitted to the outer periphery of the tubular portion 19c of the lid body 19a, and then the pressing force is released from the operation shaft 51. By releasing the pressing force, the operating shaft 51 is displaced upward by the spring force of the coil spring 52, and the interval between the free ends of the links 54, 54 is narrowed by the action of the support links 55, 55. As shown in FIG. 13, the holding claws 54 a and 54 a of 54 are engaged with the lower surface of the outer flange 20 a of the cylindrical filter 20, so that the cylindrical filter 20 is held by the lid body 19.
[0061]
Further, when the used cylindrical filter 20 is removed from the lid 19 and discarded, the operation shaft 51 is pushed down from the state of FIG. 13 against the spring force of the coil spring 52 as shown in FIG. After the holding claws 54a and 54a of the 54 and 54 are opened by the action of the support links 55 and 55, the lid 19 is subjected to a slight vibration or a light impact force so that the cylindrical filter 20 is closed by the vibration or the impact force. It is detached from the cylindrical portion 19c of the main body 19a and dropped downward as shown in FIG. Thereafter, the lid 19 is removed from the cylindrical container 17 as described above, and the grinding waste collection bag 18 containing the cylindrical filter 20 is removed from the cylindrical container 17 and discarded as shown in FIG.
[0062]
In this case, the operator does not directly touch the cylindrical filter 20 that is soiled with the grinding scraps, so that the hand is not soiled. Moreover, maintenance of the filtration device or the like is facilitated.
[0063]
<Others>
In the embodiment shown in FIG. 1, the bottom surface 11a of the drainage tank 11 is configured to be inclined downward from the drainage hose 12 side toward the pumping pump 15 side, but is not necessarily limited to this configuration.
[0064]
For example, when the bottom wall 11a of the drain tank 11 shown in FIG. 1 is viewed in a cross-section in a direction perpendicular to the paper surface, the bottom wall 11a is formed in a V shape from the inclined bottom wall portions 11b and 11c, Grinding waste settled below the tank 11 is collected at the center of the bottom wall 11a by the action of the inclined bottom wall portions 11b and 11c, so that the grinding waste can be efficiently sucked by the pumping pump 15. May be.
[0065]
【The invention's effect】
  Explained aboveAccording to the invention of claim 1,When the grinding waste accumulates in the sedimentation portion, the life of the filtration portion can be extended.
[0066]
  Also,By separating the grinding debris adhering to the upstream surface of the filtration unit by backwashing means and depositing it on the sedimentation unit, the filtration unit can be used again to remove the grinding debris, and the life of the filtration unit can be further extended. (A longer life of the filtration unit can be achieved).
[0067]
  Claim2InventionAccording toBy separating the grinding debris adhering to the upstream surface of the filtration unit by backwashing means and depositing it on the sedimentation unit, the filtration unit can be used again to remove the grinding debris, and the life of the filtration unit can be further extended. (A longer life of the filtration unit can be achieved).
[0069]
  Claim3InventionAccording to the present invention, grinding scraps sinking to the bottom of the grinding water storage container can be collected along the slope at the bottom of the slope and supplied to the filtration device..
[0070]
According to the invention of claim 4, in addition to the effect of claim 1, the operator does not directly touch the cylindrical filter 20 that is soiled with grinding scraps, so that the hand is not soiled. Moreover, maintenance of the filtration device or the like is facilitated.
[0071]
  still,Grinding water in the grinding water storage container is sent to the filtration device.IfSince the grinding waste can be sucked by the wide-mouthed suction port with the wide mouth, it is possible to easily perform the batch suction processing of the grinding waste sinking to the bottom of the grinding water storage container.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view of a grinding dust removing apparatus for a ball grinder according to the present invention.
FIG. 2 is a cross-sectional view of the filtration device shown in FIG.
FIG. 3 is an explanatory diagram of the grinding dust removing action of the filtration device shown in FIG. 2;
4A is a cross-sectional view of the three-way switching valve shown in FIG. 1, FIG. 4B is an explanatory view showing another example of a valve body used in the three-way switching valve, and FIGS. It is action | operation explanatory drawing of the valve which has a valve body of the structure shown in FIG.
5A is a perspective view of the cylindrical filter shown in FIG. 2, and FIG. 5B is a perspective view in which a bottom cap is attached to the lower part of the cylindrical filter of FIG.
6A is an exploded perspective view showing the relationship between the upper portion of the cylindrical filter and the cylindrical portion of the lid body, and FIG. 6B is a view of attaching the cylindrical filter of FIG. It is explanatory drawing.
FIG. 7 is a schematic explanatory diagram when a grinding waste collection bag is taken out from the filtration device.
FIG. 8 is an explanatory view showing another example of the drain tank and the suction port of the pumping pump shown in FIG. 1;
FIG. 9 is a schematic explanatory view showing another example of a grinding dust removing device for a ball grinder according to the present invention.
FIG. 10 is a schematic explanatory view showing another example of the drainage tank shown in FIG.
FIG. 11 is an explanatory view showing another example of a grinding dust removing device for a ball grinder according to the present invention.
12 is a cross-sectional view showing another example of the filtration device shown in FIGS. 1 to 3; FIG.
13 is a cross-sectional view taken along the line CC of FIG.
14 is an operation explanatory diagram of FIG. 13. FIG.
15A is a schematic explanatory diagram of a state where the cylindrical filter is attached to the lid (the state of FIG. 12), FIG. 15B is a schematic explanatory diagram of a state where the cylindrical filter is removed from the lid, and FIG. () Is explanatory drawing of the state which removed the cylindrical filter from the cylindrical container with the grinding waste collection bag.
16 is an explanatory view showing another example of the drain tank shown in FIG. 1. FIG.
[Explanation of symbols]
4 ... Processing lens (eyeglass lens)
11 ... Drain tank
11a ... bottom wall
14 ... Filtration device
15b ... Grinding water pipe
15c ... Suction port
17 ... Cylindrical container
18 ... Grinding waste collection bag
18a ... space (precipitation part)
19 ... Lid (lid)
20 ... cylindrical filter (filtering part)
28 ... Three-way switching valve (channel switching means)
32 ... Air pump (back washing means)

Claims (4)

A cylindrical container with a bottom and a transparent shape, a lid that closes the upper opening end of the cylindrical container, and an upper end portion disposed in the cylindrical container and having an upper end portion between the cylindrical container and the lid A transparent grinding waste collection bag held in between, a cylindrical filter disposed concentrically in the cylindrical container and having an upper end held by the lid and closed at the lower end, and the cylinder An air pump for supplying backwashing air into the cylindrical filter, supplying grinding water containing grinding waste between the grinding waste recovery bag and the cylindrical filter, and supplying the grinding water to the cylindrical filter The grinding water is filtered by the cylindrical filter by allowing it to pass through, and the grinding waste collected on the outer peripheral surface of the cylindrical filter is deposited and accumulated in the grinding waste collection bag. Tamashiri's filtration device. A grinding water storage container for storing grinding water used when processing the spectacle lens is provided, and the grinding water in the grinding water storage container is filtered by the filtering device according to claim 1 and returned to the grinding water storage container. An apparatus for removing grinding debris of a ball grinder characterized in that it is configured as described above . 3. A grinding water removing apparatus for a ball grinder according to claim 2, wherein a slant is provided on a bottom surface of a grinding water storage container for storing grinding water, and suction of a grinding water pipe for sending grinding water containing grinding waste to the filtering device. A grinding dust removing device for a ball grinder characterized in that a mouth is opened at the lower end of the inclined bottom surface . A cylindrical container with a bottom and a transparent shape, a lid that closes an upper opening end of the cylindrical container, and an upper end portion disposed in the cylindrical container and having an upper end portion between the cylindrical container and the lid A transparent grinding waste collection bag held in between, a cylindrical filter disposed concentrically in the cylindrical container and having an upper end held by the lid and closed at the lower end; and the cylinder An air pump for supplying backwashing air into the cylindrical filter, supplying grinding water containing grinding waste between the grinding waste collection bag and the cylindrical filter, and supplying the grinding water to the cylindrical filter By filtering the grinding water through the cylindrical filter and allowing the grinding dust collected on the outer peripheral surface of the cylindrical filter to settle and accumulate in the grinding scrap collection bag A device,
  The operation shaft penetrating vertically through the central portion of the lid body, and the lid body so that the upper end portion of the cylindrical filter is held between the free end portions and the free end portions are opened by a push-down operation of the operation shaft. A link-type holding mechanism having a pair of links for holding the filter rotatably supported by
  A filtration apparatus for a ball grinder, wherein the support link is opened by depressing the operation shaft, and the cylindrical filter is dropped into a grinding waste collection bag.

Images