EP1350598A2 - Lens grinding apparatus and apparatus for treating grinding water for use therein - Google Patents
Lens grinding apparatus and apparatus for treating grinding water for use therein Download PDFInfo
- Publication number
- EP1350598A2 EP1350598A2 EP03090060A EP03090060A EP1350598A2 EP 1350598 A2 EP1350598 A2 EP 1350598A2 EP 03090060 A EP03090060 A EP 03090060A EP 03090060 A EP03090060 A EP 03090060A EP 1350598 A2 EP1350598 A2 EP 1350598A2
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- EP
- European Patent Office
- Prior art keywords
- grinding
- grinding water
- water
- lens
- wastes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
- B24B9/146—Accessories, e.g. lens mounting devices
Definitions
- a grinding wheel (not shown) is rotated at high speed to grind a lens to be ground (unground circular glasses lens) into a glasses lens shape (globe shape).
- one end of a purified water recycle hose 31 is connected to the drain port 16 removably with use of a connector or a screw and an opposite end thereof is held in an upper portion of the purified grinding water chamber 3a in the grinding water tank 3 removably with use of a connector or a screw.
- fixing means for the connector or screw there may be used a known connector or nut used for the connection of hose.
- the lever 14 is operated to cancel the fixed state of the lid 11 to the separating vessel body 9 with fixing screws 18.
- the lid 11 is taken off from the separating vessel body 9, then the grinding wastes separating filter 10 is removed from the interior of the vessel body 9, and the grinding wastes present in the filter 10 is discarded. Thereafter, the grinding wastes separating filter 10 is returned to the separating vessel body 9 and the upper portion of the vessel body 9 is closed with the lid 11 by reversing the above operation, followed by execution of the foregoing "grinding work” and “grinding water treatment," Such a grinding water treatment is repeated.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
In a grinding water treating apparatus (27) for use in a lens grinding apparatus, comprising a grinding water treating means (27a) which filters grinding water after use in a glasses lens grinding work to separate grinding wastes and produce purified water and a deodorizing means (51) for removing an offensive smell developed within the grinding water treating means (27a) and also within a grinding water storage vessel (3), both grinding water treating means (27a) and deodorizing means (51) are disposed within the same housing (40).
Moreover, a lens grinding apparatus is provided having a grinding water storage vessel (3) for the storage of grinding water which has been used in grinding a glasses lens and a grinding water supply hose (19) which permits said grinding water to flow into said grinding water storage vessel,
wherein, an injection means (N) is attached to a tip (19a) of said grinding water supply hose, and said grinding water is injected radially by said injection means to cover the surface of grinding water already stored in said grinding water storage vessel, thereby extinguishing foams produced on the surface of said grinding water.
Description
- The present invention relates to a lens grinding apparatus having a grinding water storage vessel and an apparatus for treating grinding water for use therein, having a grinding water treating means and a deodorizing means.
- In a conventional apparatus for treatment of grinding water for use in a lens grinding apparatus, (hereinafter referred to as "grinding water treating apparatus"), a grinding water treating means which filters grinding water after used in a glasses lens grinding work to separate grinding wastes and produce purified water and a deodorizing means for removing an offensive smell developed in the grinding water treating means and also developed in a grinding water storage vessel, are disposed within different housings respectively.
- A housing which contains therein the grinding water treating means, a housing which houses therein the deodorizing means, as well as a space present above the grinding water storage vessel and a housing with the deodorizing meane disposed therein, are interconnected through hoses or pipes. In this case, an offensive smell is removed through hoses or the like which connect the housings.
- In the above grinding water treating apparatus, since the grinding water treating means and the deodorizing means are disposed in different housings, the size of the grinding water treating apparatus becomes large, thus giving rise to the problem that it is difficult to accommodate the apparatus within a limited receptacle space.
- On the other hand, when the grinding water flowing into the grinding water storage vessel mixes into the grinding water already stored in the grinding water storage vessel, there sometimes occurs a case where foams are formed.
- To extinguish foams developed on the surface of the grinding water stored in the grinding water storage vessel, there are known a lens grinding apparatus having a defoaming device which injects grinding water containing a defoaming agent toward the foams in the form of spray (shower) to remove the foams, a lens grinding apparatus having a defoaming device which injects pressurized grinding water upward from below the level of already-stored grinding water with use of an injection nozzle connected to the grinding water storage vessel, a lens grinding apparatus having a foam suction means which sucks the foams developed on the surface of grinding water, and a lens grinding apparatus wherein a foam overflow path for overflowing the foams developed on the grinding water surface is provided in the grinding water storage vessel.
- However, there sometimes has occurred a case where grinding wastes contained in grinding water which has been used in grinding a glasses lens adhere to the foams developed and harden in the form of cluster.
- Consequently, it is difficult to crush or suck the foams once clustered or cause them to flow out, with consequent occurrence of the problem that the foams cannot be extinguished to a satisfactory extent,
- The present invention has been accomplished in view of the above-mentioned problems in the conventional apparatuses and it is a first object of the invention to provide a grinding water treating apparatus for use in a lens grinding apparatus which grinding water treating apparatus permits both grinding water treating means and deodorizing means to be received within a limited receptacle space and thus permits reduction of the receptacle space.
- It is a second object of the present invention to provide a lens grinding apparatus capable of suppressing the formation of foams when grinding water flowing into a grinding water storage vessel mixes into grinding water already stored in the vessel.
- According to the present invention, for achieving the above first object, there ie provided a grinding water treating apparatus for use in a lens grinding apparatus, comprising a grinding water treating means which filters grinding water after use in grinding a glasses lens to separate grinding wastes and produce purified water and a deodorizing means for removing an offensive smell developed in the grinding water treating means and also in a grinding water storage vessel, the grinding water treating means and the deodorizing means being disposed within one and same housing.
- The grinding water treating means may be constructed so as to have a one-pass treating means which causes the grinding water to pass once therethrough to filter off grinding wastes.
- The one-pass treating means may be constructed so as to have a pressurizing means which applies a predetermined pressure to the grinding water treating means to squeeze out and filter grinding water from grinding wastes present within the grinding water treating means. thereby permitting the grinding wastes to be treated at a time.
- The grinding water treating means may be constructed such that a purified water recycle hose for returning the purified water to the grinding water storage vessel is provided, and an injection means is provided at a tip portion of the purified water recycle hose to inject the purified water, causing the purified water to mix into the grinding water flowing into the grinding water storage vessel and thereby extinguishing foams formed on the surface of the grinding water stored in the grinding water vessel.
- Moreover, the grinding water treating means may be constructed such that a purred water recycle hose for returning the purified water to the grinding water storage vessel is provided, and an injection means is provided at a tip portion of the purified water recycle hose to inject the purified water radially, allowing the purified water to cover the surface of the grinding water already stored in the grinding water storage vessel and thereby extinguishing foams formed on the surface of the grinding water stored in the grinding water storage vessel.
- Further, there may be adopted a construction wherein the portion where the grinding water flowing into the grinding water storage vessel strikes against the grinding water already stored in the grinding water storage vessel is covered with the purified water injected from the purified water recycle hose.
- According to the present invention, for achieving the foregoing second object, there is provided a lens grinding apparatus comprising a grinding water storage vessel for the storage of grinding water which has been used in grinding a glasses lens and a grinding water supply hose for allowing the grinding water to flow into the grinding water storage vessel, wherein an injection means is provided at a tip portion of the grinding water supply hose to inject the grinding water radially, thereby allowing the grinding water to cover the surface of the grinding water already stored in the grinding water storage vessel and extinguishing foams formed on the surface of the grinding water,
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- FIG. 1 is an explanatory piping diagram showing schematically a lens grinding apparatus and a grinding water treating apparatus according to a first embodiment of the present invention;
- FIG. 2 is an explanatory piping diagram showing schematically a lens grinding apparatus and a grinding water treating apparatus according to a second embodiment of the present invention
- FIG. 3 is an explanatory diagram (a left-hand side view of a support base shown in FIG. 2) showing an example of utilization of the support base illustrated in FIG. 2;
- FIG. 4 is a schematic explanatory diagram showing a lens grinding apparatus and a grinding water treating apparatus according to a modification of the second embodiment of the present invention;
- FIG. 5 is an explanatory piping diagram of the grinding water treating apparatus shown in FIG. 4;
- FIG. 6 is an exploded perspective view of a deodorizing device shown in FIG. 4;
- FIG. 7 is a diagram explanatory of operation of the deodorizing device shown in FIG. 6;
- FIG. 8(a) is a sectional view of a screw inserting cylinder portion in a deodorizing case;
- FIG. 8(b) is a sectional view of a partition wall portion in the deodorizing case;
- FIG. 8(c) is a sectional view taken along line B-B in FIG 8(b);
- FIG. 8(d) is a sectional view taken along line C-C in FIG. 8(b);
- FIG. 9 is an explanatory piping diagram of components of the lens grinding apparatus shown in FIG. 4;
- FIG. 10 is an explanatory diagram showing the flow of grinding water;
- FIGS. 11(a) to 1 are explanatory diagrams of an operating panel shown in FIG. 4;
- FIG. 12 is a diagram explanatory of a grinding water non-recycle treatment in the grinding water treating apparatus shown in FIG. 4,
- FIG. 13 is an explanatory piping diagram showing schematically a lens grinding apparatus and a grinding water treating apparatus according to a third embodiment of the present invention;
- FIG. 14 is an explanatory piping diagram of the grinding water treating apparatus shown in FIG. 13;
- FIG. 15 is an explanatory piping diagram of components of the lens grinding apparatus shown in FIG. 13;
- FIG. 16 is an explanatory diagram showing the flow of grinding water;
- FIG. 17 is an enlarged explanatory diagram of portion D shown in FIG. 15;
- Fig, 18 is a graph showing results of valuation of the grinding water treating apparatus according to the third embodiment; and
- FIG. 19 is an enlarged explanatory diagram of a lens grinding apparatus according to a fourth embodiment of the present invention,
- Fig. 20 is a sectional view showing the other example of the deodorizing case.
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- Some preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings hereinafter.
- A first embodiment of the present invention will be described below.
- In FIG. 1,
reference numeral 1 denotes a lens grinding apparatus,numeral 2 denotes an apparatus support base for supporting the lens grinding apparatus, andnumeral 3 denotes a grinding water tank (grinding water storage vessel) disposed under theapparatus support base 2. A grindingwater supply pump 4 is installed in the interior of thegrinding water tank 3.Numerals water supply pump 4. One port 6a of a three-way change-overvalve 5 is connected to thedischarge port 4b of the grindingwater supply pump 4. -
Numerals valve 5 and numeral 5d denotes a change-over lever in the three-way change-overvalve 5. By switching the change-overlever 5d in the three-way change-overvalve 5 to theport 5b side, theports 5a and 5b come into communication with each other and at the same time the communications between theports 5a, 5b and theport 5c are cut off. Further, by switching the change-overlever 5d in the three-way change-overvalve 5 to theport 5c side, theports 5a and 5c come into communication with each other and at the same time the communications between theports 5a, 5c and theport 5b are cut off - A
support base 6 as a housing is disposed sideways of theapparatus support base 2. On thesupport base 6 is mounted a grindingwater treating apparatus 7, while under thesupport base 6 is disposed a grinding water storage vessel 8 (e.g., a bucket). - The grinding
water treating apparatus 7 is provided with a grinding water treating means and a deodorizing means - A grinding water treating section (grinding water treating means) 7a has a bottomed, cylindrical, transparent (or translucent) separating vessel body (pressure-resistant vessel) 9, a bottomed, cylindrical, transparent (or translucent) grinding wastes separating filter 10 (one-pass treating means) disposed within the separating
vessel body 9, alid 11 which closes an upper-end opening of theseparating vessel body 9, apacking 12 interposed between thelid 11 and the separatingvessel body 9, fixingscrews 13 which fix thelid 11 to the separatingvessel body 9, and alever 14 for performing the fixing operation of thefixing screws 13 and for canceling the same operation. - The grinding
water treating section 7a is further provided with afeed port 15 connected to the upper end portion of theseparating vessel body 9, adrain port 16 formed in a bottom of the separatingvessel body 9, and a three-way change-overvalve 17 oneport 17a of which is connected to thefeed port 15. -
Numerals valve 17, and numeral 17d denotes a change-over lever in the three-way change-overvalve 17. - In the three-way change-over
valve 17, by switching the change-over lever 17d to theport 17b side theports ports port 17c are cut off. Further, by switching the change-over lever 17d in the three-way change-overvalve 17 to theport 17c side theports ports port 17b are cut off. - A grinding Water supply nozzle (not shown), which is disposed within the
lens grinding apparatus 1, is connected to theport 5b of the three-way change-overvalve 5 through a grindingwater supply hose 18. In thelens grinding apparatus 1, a grinding wheel (not shown) is rotated at high speed to grind a lens to be ground (unground circular glasses lens) into a glasses lens shape (globe shape). - For the grinding work, the grinding water stored in the grinding
water tank 3 is pumped up by the grindingwater supply pump 4 and is fed to the nozzle (not shown) in thelens grinding apparatus 1 through both three-way change-overvalve 5 and grindingwater supply hose 18, then is fed from the nozzle to a lens grinding section using the grinding wheel to cool the grinding section and waah away grinding wastes. For this grinding work there is used a known construction, so the details thereof will here be omitted. - The grinding water which has thus washed away the grinding wastes is allowed to flow down together with the grinding wastes through a bottom of the
lens grinding apparatus 1 and further through adrain hose 19 into the grindingwater tank 3. - Further, an air compressor (a pressurizing means, a compressed air supply means, i.e., a compressed gas supply means) 20 is connected to the
port 17b of the three-way change-overvalve 17 through anair hose 21, and theport 5c of the three-way change-overvalve 5 and theport 17 of the three-way change-overvalve 17 are connected together through a grindingwater supply hose 22. The grindingwater supply hose 22 is attached to theport 17c removably. - The deodorizing means is a deodorizing device (not shown) disposed in a space formed, for example, under the grinding
water treating section 7a and inside thesupport base 6. - The following description is now provided about the
lens grinding apparatus 1 and the grindingwater treating apparatus 7 both constructed as above. - In the above construction, first the change-over
lever 5d of the three-way change-overvalve 5 is switched to the port 6b side, allowing theports 5a and 5b to come into communication with each other and blocking the communication between theports 5a, 5b and theport 5c. In this state, the grinding wheel (not shown) in thelens grinding apparatus 1 is rotated at high speed to grind the to-be-ground lens into a glasses lens shape (globe shape). - At this time, the grinding water stored in the grinding
water tank 3 is pumped up by the grindingwater supply pump 4 and is fed to the nozzle (not shown) in thelens grinding apparatus 1 through the three way change-overvalve 5 and the grindingwater supply hose 18, then is fed from the nozzle to the lens grinding section using the grading wheel to cool the grinding section and wash away grinding wastes, The grinding water which has thus washed away the grinding wastes is allowed to flow down together with the grinding wastes from the bottom of thelens grinding apparatus 1 to the grindingwater tank 3 through thedrain hose 19. - When the grinding water stored in the grinding
water tank 3 becomes somewhat turbid due to the grinding wastes in the lens grinding work by thelens grinding apparatus 1, the work is stopped. Then, the change-overlever 5d of the three-way change-overvalve 5 is switched to theport 5c side to establish communication between theports 5a and 5c. Further, the change-over lever 17d of the three-way change-overvalve 17 is switched to theport 17c side to establish communication between theports - In this state, the grinding
water supply pump 4 is activated to supply the grinding water stored in the grindingwater tank 3, together with grinding wastes, into the grindingwastes separating filter 10 in the grindingwater treating apparatus 7 through the three-way change-overvalve 5, grindingwater supply hose 22 and three-way change-overvalve 17. As a result, the grinding water passes through the grindingwastes separating filter 10, flows down from thedrain port 16 and is stored in the grindingwater storage vessel 8. At this time, the grinding wastes contained in the grinding water are collected by the grindingwastes separating filter 10. - When the grinding wastes are collected to a certain extent within the grinding
wastes separating filter 10 and the amount of grinding water flowing down into the grindingwater storage vessel 8 decreases, thefilter 10 is clogged and hence the grinding water in the filter is difficult to flow, - As the degree of clogging of the grinding
wastes separating filter 10 becomes higher, the internal pressure of thefilter 10 tends to become higher due to the grinding water supplied. In this connection there may be adopted a construction wherein an infra-vessel sensor (not shown) is disposed in an upper portion (e.g., on a lower surface of the lid 11) within the separatingvessel body 9 to detect a clogged state of the grindingwastes separating filter 10, and when the internal pressure of thefilter 10 has become higher than a predetermined value, this state is displayed for example by an LED (not shown) on the basis of a pressure detection signal provided from the intra-vessel pressure sensor (not shown) to let a worker know this state. - In this case, therefore, after the operation of the grinding
water supply pump 5 is stopped, the change-over lever 17d of the three-way change-overvalve 17 is switched to theport 17b side to establish communication between theports ports port 17c. Thereafter, theair compressor 20 is turned ON to supply compressed air to above the grindingwastes separating filter 10 through theair hose 21 and the three-way change-overvalve 17. As a result, under the action of the air pressure, grinding water which has been staying on an upper portion of the grinding wastes in the grindingwastes separating filter 10 passes through the grinding wastes and thefilter 10 and flows down into the grindingwater storage vessel 8 through thedrain port 16. - When there is little grinding water flowing down from the
drain port 16, theair compressor 20 is turned OFF and the fixed state of thelid 11 to the separatingvessel body 9 by the fixing screws 13 is cancelled by operating thelever 14. Thereafter, thelid 11 is removed from the separatingvessel body 9, the grindingwastes separating filter 10 is taken out from the interior of the separating vessel body, and the grinding wastes present within thefilter 10 are discarded. - When the degree of turbidity is low, the grinding water present in the grinding
water storage vessel 8 is returned to the grindingwater tank 3 for use in the grinding work, while when the degree of turbidity is high, the grinding water is discarded by flowing it to sewage for example. - Turbid grinding water and grinding wastes present in the grinding
water tank 3 are treated by repeating such a process. - Although in the above embodiment the ports of the three-way change-over
valves manual operating levers 5d and 17d, this does not always constitute a limitation. - For example, there may be adopted a construction wherein a turbidity sensor for detecting the state of turbidity in the interior of the grinding
water tank 3 is provided, and when a somewhat progressed state of turbidity is detected by the turbidity sensor, the state of connection of each port in the three-way change-overvalve water treating apparatus 7. - Or there may be adopted a construction. wherein the grinding wastes separating work involving such switching of the connection condition among the ports of the three'way change-over
valves - As described above, the grinding water treating apparatus (7) according to this first embodiment is provided with the grinding water treating means (grinding
water treating section 7a) which filters grinding water having been used in the lens grinding work to separate grinding wastes and produce purified water and the deodorizing means (deodorizing device (not shown)) for removing an offensive smell present in the interior of the grinding water treating means (7a) and the grinding water storage vessel (storage tank 3), the grinding water treating means (7a) and the deodorizing means (not shown) being disposed within the same housing (support base 6). - With this construction, the grinding water treating apparatus (7) provided with both grinding water treating means (7a) and deodorizing means (not shown) can be accommodated within a limited receptacle space and hence it is possible to reduce the receptacle space,
- In the grinding water treating apparatus (7) according to this first embodiment, the grinding water treating means (7a) has a one-pass treating means (the grinding wastes separating filter 10) for passing grinding water once therethrough to filter off grinding wastes.
- According to this construction, grinding water (purified water) after the filtration does not return to the grinding water storage vessel (3), but filtered water high in clarity can be drained directly to the sewerage.
- Further, in the grinding water treating apparatus (7) according to this first embodiment, the one-pass treating means (10) has a pressurizing means (the air compressor 20) which applies a predetermined pressure to the grinding water treating means (7a) to squeeze out and filter grinding water from grinding wastes present within the grinding water treating means (7a), thereby permitting the grinding wastes to be treated at a time.
- According to this construction, even if the one-pass treating means (10) is clogged, the grinding water present therein can be separated from the grinding wastes quickly, easily and positively, permitting easy discard of only the grinding wastes.
- A second embodiment of the present invention will be described below.
- In FIG. 2, the
numeral 1 denotes a lens grinding apparatus,numeral 2 denotes an apparatus support base for supporting thelens grinding apparatus 1, and numeral 3 denotes a grinding water tank (grinding water storage vessel) disposed under theapparatus support base 2. With apartition filter 23, the interior of the grindingwater tank 3 is partitioned into a purified grinding water chamber (purified water chamber) 3a and a discharged grinding water chamber (waste water chamber) 3b. - In the purified grinding
water chamber 3a is disposed a purifiedwater recycle pump 24, while in the discharged grindingwater chamber 3b is disposed a discharged grindingwater pump 26. A discharge side of the purifiedwater recycle pump 24 and a grinding water supply nozzle (not shown) disposed within thelens grinding apparatus 1 are connected together through a purified grindingwater supply hose 26. - In the
lens grinding apparatus 1, a grinding wheel (not shown) is rotated at high speed to grind a lens to be ground (unground circular glasses lens) into a glasses lens shape (globe shape). - In this grinding work, purified water present within the purified grinding
water chamber 3a is pumped up by the purifiedwater recycle pump 24 and is fed through the purified grindingwater supply hose 26 to the nozzle (not shown) disposed within thelens grinding apparatus 1, then is fed from this nozzle to a lens grinding section using the grinding wheel to cool the grinding section and wash away grinding wastes, As a construction for such a grinding work there is used a known one, so a detailed description thereof will here be omitted. - Grinding water ("discharged grinding water" hereinafter) after thus washing away of grinding wastes is allowed to flow down together with the grinding wastes into the discharged grinding
water chamber 3b in the grindingwater tank 3 from a bottom of thelens grinding apparatus 1 through a grinding water discharge hose (grinding water supply hose) 19. - Sideways of the
apparatus support base 2 is disposed a grindinewater treating apparatus 27 which is installed on a support base (housing) 28 with caster. As will be described later, the grindingwater treating apparatus 27 is provided with a grinding water treating means which filters discharged grinding water to separate grinding wastes and produce purified grinding water ("purified water" hereinafter) and a deodorizing means for removing an offensive smell developed within the grinding water treating means, etc. - A grinding water treating section (grinding water treating means) 27a has a bottomed cylindrical separating vessel body (pressure-resistant vessel) 9 and a bottomed cylindrical grinding wastes separating filter (one-pass means) 10 disposed within the separating
vessel body 9. The grindingwater treating section 27a is also provided with alid 11 which closes an upper-end opening of the separatingvessel body 9, a packing 12 interposed between thelid 11 and the upper end of the separatingvessel body 9, fixingscrews 13 which fix thelid 11 to the separatingvessel body 9, and alever 14 for performing the fixing operation of the fixing screws 13 and canceling the same operation. - The grinding
water treating section 27a is further provided with afeed port 15 connected to the upper end portion of the separatingvessel body 9 and adrain port 16 provided in a lower portion of the separatingvessel body 9. - An opening/closing valve (not shown) is provided in each of the
feed port 15 and drainport 16. Numerals 15a and 16a denote open/close operating lever for the opening/closing valve (not shown) in thefeed port 15 and drainport 16. - One end of a grinding
water discharge hose 30 is connected to a discharge port (not shown) of the grindingwater discharge pump 25, while an opposite end of the grindingwater discharge hose 30 is connected to thefeed port 15 removably with use of a connector or a screw. - On the other hand, one end of a purified water recycle
hose 31 is connected to thedrain port 16 removably with use of a connector or a screw and an opposite end thereof is held in an upper portion of the purified grindingwater chamber 3a in the grindingwater tank 3 removably with use of a connector or a screw. As fixing means for the connector or screw there may be used a known connector or nut used for the connection of hose. - Further, the deodorizing means has a deodorizing device 32 (see FIG. 3) disposed under the separating
vessel body 9. - Next, a description will be given below of the operation of the
lens grinding apparatus 1 and the grindingwater treating apparatus 27 both constructed as above. - In the above construction, the opening/closing valves (not shown) disposed in the
feed port 15 and thedrain port 16 are opened by operating the open/clone operating levers lens grinding apparatus 1 is rotated at high speed to grind a to-be-ground lens into a glasses lens shape (globe shape). - At this time, purified water present within the purified grinding
water chamber 3a in the purifiedwater tank 3 is pumped up by the purifiedwater recycle pump 24 and is fed through the purified grindingwater supply hose 26 to the nozzle (not shown) disposed within thelens grinding apparatus 1, than is fed from the nozzle to the lens grinding section using the grinding wheel to cool the grinding section and wash away grinding wastes. - The purified water after thus washing away of grinding wastes becomes discharged grinding water and is allowed to flow down together with the grinding wastes from the bottom of the
lens grinding apparatus 1 into the discharged grindingwater chamber 3b in the grindingwater tank 3 through the grindingwater discharge hose 19. - In such a grinding work, the grinding
water discharge pump 25 sucks the discharged grinding water from the interior of the discharged grindingwater chamber 3b in the grindingwater tank 3 together with grinding wastes and supplies the discharged grinding water containing the grinding wastes into the grindingwastes separating filter 10 through the grindingwater discharge hose 30 and thefeed port 15. A single pump may be used in common to both purifiedwater recycle pump 24 and grindingwater discharge pump 25. - The discharged grinding water is separated from the grinding wastes by the grinding
wastes separating filter 10 and becomes purified water, which is returned into the purified grindingwater chamber 3a in the grindingwater tank 3 through thedrain port 16 and the purified water recyclehose 31. At this time, the grindingwastes separating filter 10 collects the grinding wastes contained in the discharged grinding water. - When the grinding wastes are collected to a certain extent by the grinding
wastes separating filter 10 and the amount of the discharged grinding water filtered by the grindingwastes separating filter 10 decreases, the purifiedwater recycle pump 24 and the grindingwater discharge pump 25 are turned OFF and thereafter thelever 14 is operated to cancel the fixed state of thelid 11 to the separatingvessel body 9 by the fixing screws 13. - Subsequently, the
lid 11 is removed from the separating vessel body. 9, the grindingwastes separating filter 10 is taken out from the interior of the separatingvessel body 9, and the grinding wastes collected in thefilter 10 are discarded. Then, thefilter 10 is returned to the separatingvessel body 9 and thevessel body 9 is closed with thelid 11 by reversing the above operation, thereafter, the foregoing "grinding work" and "grinding water treatment" are allowed to proceed. Subsequently, such a grinding water-grinding wastes separating work is performed repeatedly. - In such a grinding water treatment, if the discharged grinding water filtering capacity of the grinding
wastes separating filter 10 is deteriorated, the grinding wastes collected by the grindingwastes separating filter 10 may be discarded as described above after squeezing out purified water from the grinding wastes by the air compressor (pressurizing moans) (not shown) and subsequent drainage thereof from thedrain port 16. - If the purified water is somewhat turbid even after the application of such a grinding water treatment, there may be adopted a method involving removing the purified water recycle
hose 31 from the grindingwater tank 3, connecting thehose 31 to a sewer (not shown), and carrying out the foregoing grinding water treatment, whereby purified water free of grinding wastes can be discarded to the sewer. Alternatively, there may be adopted a method wherein the purified water recyclehose 31 is disconnected from thedrain port 16, while a drain hose (not shown) connected to the sewer is attached to thedrain pore 16, and the foregoing grinding water treatment is carried out, thereby allowing turbid purified water free of grinding wastes to be discharged to the sewer. - By allowing such a recycle type grinding water treatment to be carried out by the grinding
water treating section 27a, there is formed a apace under thesupport base 28 and therefore such a deodorizing device (deodorizing means) 82 as shown in FIG. 3 is disposed in the said space. - With the
deodorizing device 32, it is possible to remove an offensive smell (e.g., an offensive smell developed when grinding a plastic lens) developed within thelens grinding apparatus 1 and the grindingwater tank 3. - As described above, the grinding water treating apparatus (27) according to this second embodiment is provided with the grinding water treating means (grinding
water treating section 27a) which filters grinding water after used in grinding a glasses lens to separate grinding wastes and produce purified water and the deodorizing means (deodorizing device 32) for removing an offensive smell developed in both grinding water treating means (27a) and grinding water storage vessel (storage tank 3), the grinding water treating means (27a) and the deodorizing means (32) being disposed within the same housing (support base 28). - According to this construction, the grinding water treating apparatus (27) provided with both grinding water treating means (27a) and deodorizing means (not shown) can be accommodated within a limited receptacle space, thus permitting reduction of the receptacle space.
- In the grinding water treating apparatus (27) according to this second embodiment, the grinding water treating means (27a) has the one-pass treating means (grinding wastes separating filter 10) which causes grinding water to pass once therethrough to filter off grinding wastes.
- According to this construction, grinding water (purified water) after the filtration does not return to the grinding water storage vessel (3), but filtered water high in clarity can be discharged as it is to the sewer.
- A modification of the above second embodiment will be described below with reference to PIGS. 4 to 13, in which the same portions as in the second embodiment are identified by the same reference numerals as in the second embodiment.
- In FIG. 4,
numeral 1 denotes a lens grinding apparatus,numeral 2 denotes a rack like apparatus support base which supports thelens grinding apparatus 1, and numeral 3 denotes a grinding water tank (grinding water storage vessel) disposed under theapparatus support base 2. - As shown in FIGS. 5 and 9, the interior of the grinding
water tank 3 is partitioned to a purified grinding water chamber (purified water chamber) 3a and a discharged grinding water chamber (waste water chamber) 3b by means of apartition filter 23. - As the
partition filter 23 is used a 100µ filter lest grinding dust should enter a deodorizing device (to prevent the passage of grinding wastes). Through this filter the purified grindingwater chamber 3a and the discharged grindingwater chamber 3b are in communication with each other while preventing the passage of grinding wastes, and the quantities of water stored in the two are almost equal to each other. - A purified
water recycle pump 24 is disposed in the purified grindingwater chamber 3a, while a grindingwater discharge pump 25 is disposed in the discharged grindingwater chamber 3b. A discharge side of the purifiedwater recycle pump 24 and a grindingwater supply nozzle 1a disposed in thelens grinding apparatus 1 are connected with each other through a purified grindingwater supply hose 26 as shown in FIG. 8. - One end of a grinding
water discharge hose 30 is connected to a discharge port (discharge side) of the grindingwater discharge pump 26, and a connectingpipe 30a is attached to an opposite end of the grindingwater discharge hose 30. - One end of a purified water recycle
hose 31 is put in communication with the purified grindingwater chamber 3a, and a connectingpipe 31a is attached to an opposite end of the purified water recyclehose 31. - In the
lens grinding apparatus 1, as shown in FIG. 9, agrinding wheel 1b is rotated at high speed to grind a lens to be ground (unground circular glasses lens) L into a glosses lens shape (globe shape). - In the grinding work, purified water present in the purified grinding
water chamber 3a is pumped up by the purifiedwater recycle pump 24 and is fed through the purified grindingwater supply hose 26 to anozzle 1a disposed within thelens grinding apparatus 1, then is fed from thenozzle 1a to a grinding section A which is for grinding the lens L with thegrinding wheel 1b, to cool the grinding section A and wash away grinding wastes (see FIG. 9). For such a grinding work there is used a known construction, so a detailed explanation thereof will here be omitted. - Purified water after thus washing away of grinding wastes becomes discharged grinding water, which is allowed to flow down together with grinding wastes from a bottom of the
lens grinding apparatus 1 into the discharged grindingwater chamber 3b in the grindingwater tank 3 through the grindingwater discharge hose 19. - Further, sideways of the
apparatus support base 2 is disposed abody case 40 with caster as a housing corresponding to thesupport base 28 shown in FIG, 2, and a grindingwater treating apparatus 27 is disposed within the body case 40 (see FIG. 4). The grindingwater treating apparatus 27 is provided with a grinding water treating means and a deodorizing means. - At a front upper portion of the
body case 40 is formed a frontupper projection 41 which projects to the front side, while in a front lower portion of thebody case 40 is formed afront opening 42 as shown in FIGS. 4 and 6, which in closed with afront lid 43 as in FIG. 4. - A grinding water treating section (grinding water treating means) 27a has a bottomed, cylindrical, separating vessel body (pressure-resistant vessel) 9 embedded in an upper portion of the
body case 40 and a bottomed, cylindrical, grinding wastes separating filter 10 (one-pass means) disposed within the separatingvessel body 9. - As shown in FIG, 4, an upper-end opening of the separating
vessel body 9 is closed with alid 11, and a packing 12 is interposed between thelid 11 and the upper end of the separatingvessel body 9 to ensure the interior of the vessel body in a hermetically sealed state. Thelid 11 is fixed to the separatingvessel body 9 with fixing screws 13.Numeral 14 denotes a lever for performing the fixing operation of the fixing screws 13 and for canceling the same operation, - Further, a
feed port 15 is connected to the upper end portion of the separatingvessel body 9, while a drain port (lower drain port) 16 and a drain port (upper drain port) 16' are formed at different heights in a lower portion of the separatingvessel body 9. - As shown in FIG. 5, a connecting
pipe 44 for the supply of water and a connectingpipe 45 for the supply of air are attached to a vertically intermediate portion of arear wall 40a of thebody case 40, and ahose connecting pipe 46 is attached to a lower end portion of therear wall 40a. Moreover, as shown in FIGS. 4 and 5, a connectingpipe 16b for drainage is attached to a lower surface of the frontupper projection 41 of thebody case 40. - To the
feed port 16, as shown in FIG. 9, are connected not only the connectingpipe 44 through an opening/closingvalve 47 but also the connectingpipe 45 through anair regulator 48 and an opening/closingvalve 49. - Further, the
drain port 16 and the connectingpipe 16b for drainage are connected with each other through adrain pipe 16c and an opening/closingvalve 50. The opening/closingvalve 47 has an operatingshaft 47a projecting upward from an upper wall 40b of thebody case 40 and an open/close operating lever 47b which is integral with the operatingshaft 47a. The opening/closingvalve 49 has an operatingshaft 49a projecting upward from the upper wall 40b of thebody case 40 and an open/close operating lever 49b which is integral with the operatingshaft 49a. - The opening/closing
valve 50 has an operatingshaft 50a projecting from the front side of the frontupper projection 41 of thebody case 40 and an open/close operating lever 50b which is integral with the operatingshaft 50a. - One end of a
drain pipe 16d is connected to the drain port 16', one end of adrain pipe 16e is connected halfway of adrain pipe 16c, and an opening/closingvalve 90 is connected between opposite ends of thedrain pipes valve 90 has an operatingshaft 90a projecting upward from the upper wall 40b of thebody case 40 and an open/close operating lever 90b which is integral with the operatingshaft 90a. - Besides, the connecting
pipe 30a of the grindingwater discharge hose 30 is connected to the connectingpipe 44 removably and the connectingpipe 31a of the purified water recyclehose 31 is connected to the connectingpipe 16b removably. Further, theair pump 20 is disposed sideways of the grindingwater treating apparatus 27 and one end of anair hose 21 is connected to an air discharge side of theair pump 20, while a connectingpipe 21a is connected to an opposite end of theair hose 21. The connectingpipe 21a is also connected to the connectingpipe 45 removably. - The connecting
pipes pipes pipes pipe 31a. The hose hook HF is provided so that it can be engaged in a hose hook hole (hook retaining hole, retaining means) 40c formed in a side face (see FIG. 5) of thebody ease 40. - As shown in FIG. 4, a deodorizing device (deodorizing means) 51 is disposed in a lower portion within the
body case 40. As shown in FIG. 7, thedeodorizing device 51 has adeodorizing device body 52 and a small-sized blower (a motor-operated blower) 53 which exerts a negative suction pressure on thedeodorizing device body 52. - As shown in FIGS. 7 and 8(a), the
deodorizing device body 52 has adeodorizing case 64 and a holdingplate 55 attached to the bottom wall 40b of thebody case 40. - The
deodorizing case 54 has acylindrical case 56,end walls cylyndrical case 56, and ascrew inserting cylinder 59 of a small diameter fixed at both ends to theend walls end wall 57 are formed anair inlet 60 and anair outlet 61. - The
deodorizing case 54 has apartition wall 62 which partitions one end side (endwall 57 side) of the interior of thecylindrical case 66 into right and left compartments as in FIGS. 8(b) and 8(c). In this construction, the right and left portions in thecylindrical case 56 are in communication with portion located between thepartition wall 62 and the end wall 58 (see FIGS. 8(c) and 8(d)). - Besides, the
deodorizing device body 52 has activatedcharcoal 63 filled. within thedeodorizing case 54 and afilter 64 disposed within theair inlet 60. - Further, in the holding
plate 55 are formed ahose connecting port 65, a tappedhole 66, and ablower communicating port 67. Theblower 53 is attached to the holdingplate 55 and an air suction port (not shown) of theblower 3 is in communication (connection) with theblower communication port 67. - The
deodorizing device body 52 is installed within thebody case 40 by grasping a peripheral edge portion (handle portion) of theend wall 58 projecting from thecylindrical case 56 and then inserting thedeodorizing case 54 into thebody case 40 through thefront opening 42. - Thus, by disposing the
deodorizing device 51 within thebody case 40, the grindingwater treating section 27a as grinding water treating means provided on top of thebody case 40 and thedeodorizing device 51 as deodorizing means are both inserted into the same body case (housing) 40. - In this inserting operation, the
air inlet 60, thescrew inserting cylinder 59, and theair outlet 61 in thedeodorizing case 54 are brought into opposition to thehose connecting port 66, the tappedhole 66, and theblower communication port 67, respectively, which are formed in the holdingplate 55, and one end of thedeodorizing case 54 is brought into abutment against the holdingplate 55. - In this state, a fixing
screw 68 is inserted through the front lid (lid) 43 into thescrew inserting cylinder 59 and its tip portion is threadedly engaged with the tappedhole 66, whereby thedeodorizing device body 52 and the holdingplate 55 are fixed and thefront lid 43 is fixed to thebody case 40 in a closed state of thefront opening 42. Thehose connecting port 65 and thehose connecting pipe 46 are connected with each other through atransparent air hose 69. - A
window 70 for visually checking theair hose 69 is formed in the upper wall 40b of thebody case 40 and is covered with a transparent cover (window glass) 71. In FIGS. 9 and 12, thenumeral 8 denotes a grinding water storage vessel such as a bucket for example which can be installed as necessary. - An
air hose 46a is interposed between thehose connecting port 46 and an upper space of the purified grindingwater chamber 3a in the grindingwater tank 3. More specifically, one end of theair hose 46a is connected into the upper space of the purified grindingwater chamber 3a, while an opposite end of theair hose 46a is attached to the hose connecting port 46 (see FIG. 9). - Further, an operating
panel 72 is provided at a front upper portion of thesupport base 2, and as shown in FIG. 11. a push-button switch 73 for dehydration, a push-button switch 74 for deodorization, and a push-buttbn switch 75 for filtration, are installed on theoperating panel 72. The push-button switches 73-75 are connected to acontroller 76. - In FIG. 11, the numerals, 200, 201, and 202 denote "Dehydration," "Deodorizing," and "Filtration," respectively.
- The
controller 76 is adapted to control the operation of theair compressor 20 when the push-button switch 73 for dehydration is pushed ON, control the operation of theblower 53 when the push-button switch 74 for deodorizing is pushed ON, and further control the operations of the purifiedwater recycle pump 24 and the grindingwater supply pump 25 when the push-button switch 75 for filtration is pushed ON. - When the
lens grinding apparatus 1 is performing the lens grinding work, thecontroller 76 controls the operation of the purifiedwater recycle pump 24 so that purified water is fed to thenozzle 1a in accordance with a work signal provided from thelens grinding apparatus 1. - A timer T (see FIG. 4) is mounted to the upper wall 40b of the
body case 40 and control is made so that the time set by the timer T is a filtration time. - Next, reference will be made below to the operation of the
lens grinding apparatus 1 and the grindingwater treating apparatus 27 both constructed as above. - When the grinding work is to be carried out by the
lens grinding apparatus 1, first the open/close operating lever 47b is operated to open the opening/closingvalve 47, allowing the grindingwater discharge hose 30 to communicate with thefeed port 15, At the same time, the open/close the open/close operating lever 90b is operated to open the opening/closingvalve 90, allowing the purified water recyclehose 31 to communicate with thedrain ports 16 and 16'. On the other hand, the open/close operating lever 49b is operated to close the opening/closingvalve 49, causing the communication between the air discharge side of theair compressor 20 and thefeed port 16 to be cut off - Next, a control panel (not shown) of the
lens grinding apparatus 1 is operated to let thegrinding wheel 1b rotate at high speed, thereby grinding the to-be-ground lens into the glasses lens shape (globe shape). At this time, upon receipt of a grinding start signal from thelens grinding apparatus 1, thecontroller 76 causes the purifiedwater recycle pump 24 and the grindingwater supply pump 25 to operate. - As a result, the purred water present within the purified grinding
water chamber 3a in the purifiedwater tank 3 is pumped up by the purifiedwater recycle pump 24 as indicated with arrow A1 in FIG. 9 (see FIG. 10) and is fed through the purified grindingwater supply hose 26 to thenozzle 1a disposed within thelens grinding apparatus 1. - As shown in FIG. 9, the purified water is sprayed from the
nozzle 1a toward the grinding section A including thegrinding wheel 1b of the lens L to cool the grinding section A and wash away grinding wastes, The purified water after thus washing away of grinding wastes becomes discharged grinding water and is allowed to flow down together with the grinding wastes into the discharged grindingwater chamber 3b in the grindingwater tank 3 from the bottom of thelens grinding apparatus 1 through the grindingwater discharge hose 19, as indicated with arrow A2 (see FIG. 10). - On the other hand, the grinding
water discharge pump 25 sucks the grinding water present within the discharged grindingwater chamber 3b in the grindingwater tank 3 together with grinding wastes and supplies the discharged grinding water containing the grinding wastes into the grindingwastes separating filter 10 through the grindingwater discharge hose 30, opening/closingvalve 47 and feedport 15, as indicated with arrow A3 (see FIG. 10). - The discharged grinding water is filtered and separated from grinding wastes by means of the grinding
wastes separating filter 10, then flows down to the bottom side of the separatingvessel body 9. Within the separatingvessel body 9, the discharged grinding water after separation from grinding wastes becomes purified water and is conducted to the connectingpipe 16b through thedrain port 16,drain pipe 16c and opening/closingvalve 60 and also through the drain pore 16',drain pipe 16d, opening/closingvalve 90,drain pipes valve 50. As shown in FIG. 9, since thedrain ports 16 and 16' are vertically offset from each other, the drainage efficiency is improved. - The purified water conducted to the connecting
pipe 16b is returned into the discharged grindingwater chamber 3b in the grindingwater tank 3 through the purified water recyclehose 31 as indicated with arrow A4 (see FIG. 10) and is sucked in and recycled by the purifiedwater recycle pump 24. - When the grinding
wastes separating filter 10 is clogged in the grinding work, with consequent decrease in the amount of purified water which is returned into the discharged grindingwater chamber 3b in the grindingwater tank 3 through thedrain port 16 and the purified water recyclehose 31, the function of washing away grinding wastes and the function of cooling the grinding section are not affected because the discharged grinding water present within the discharged grindingwater chamber 3b passes through thepartition filter 23, flows into the purified grindingwater chamber 3a, then is discharged from the purifiedwater recycle pump 24 and is recycled. - When a slide lid 1c of the
lens grinding apparatus 1 is slid upward to open a grinding chamber 1d of theapparatus 1 and the lens L is removed from between a pair oflens rotating shafts 1e mounted within the grinding chamber 1d, there is a fear that an offensive smell developed in the grinding chamber 1d and that in the grindingwater tank 3 may leak from the same chamber and offend the worker. Therefore, when opening the grinding chamber 1d of thelens grinding apparatus 1, care should be taken to prevent leakage of the offensive smell from the grinding chamber 1d to the exterior. - More specifically, first the push-button switch (button) 74 for deodorizing is pushed ON and this ON signal is inputted to the
controller 76. Upon receipt of the ON signal by thepush button switch 74 thecontroller 76 causes theblower 53 to operate and a negative suction pressure induced by theblower 53 is exerted on the interior of the upper space in the purified grindingwater chamber 3a through thedeodorizing device body 52, theair hoses water discharge hose 19. - As a result, the offensive smell developed in the grinding chamber 1d is sucked into the upper space in the purified grinding
water chamber 3a through the grindingwater discharge hose 19. - On the other hand, the air which contains the offensive smell developed in the grinding
chamber 1 and the offensive smell in the upper space of the purified grindingwater chamber 3a is sucked into thedeodorizing device body 52 through theair hoses filter 64 and the activatedcharcoal 63 and is thereafter discharged from theblower 53. At this time, foams and grinding wastes developed on the surface of purified water contained in the air are collected by thefilter 64 and the offensive smell contained in the air which has passed through thefilter 64 is adsorbed on the activatedcharcoal 63. Thus, only the air freed from the offensive smell is discharged to the atmosphere from theblower 53. - Therefore, the offensive smell developed in the grinding chamber Id of the
lens grinding apparatus 1 does not leak to the exterior and thus there is no fear of the worker being offended by the offensive smell. - The state of the interior of the
transparent air hose 69 can be visually checked through thetransparent cover 71 applied to thewindow 70 which is formed in anupper wall 40d of thebody case 40. Therefore, even if the foams formed on the surface of the purified water in the purred grindingwater chamber 3a are sucked into theair hose 69 together with air, it is possible to check the state of the foams present within theair hose 69. Consequently, it is possible to easily determine the timing for the work of taking out thedeodorizing device body 52 and replacing thefilter 64 and the timing for the work of taking out theair hose 69 and washing the interiox thereof, whereby it is possible to prevent a bad influence on the deodorization effect which occurs when the amount of sucked foams is large. - When the purified water in the grinding
water tank 3 becomes somewhat turbid in the above grinding work and is to be replaced, the opening/closingvalve 47 is opened by operating the open/close operating lever 47b, allowing tho grindingwater discharge hose 30 to communicate with thefeed port 15. At the same time, the opening/closing valves hose 31 to communicate with thedrain ports 16 and 16', On the other hand, the opening/closingvalve 49 is closed by operating the open/close operating lever 49b to cut off the communication between the air discharge side of theair compressor 20 and thefeed port 15, - Then, the connecting
pipe 31a of the purified water recyclehose 31 is removed from the connectingpipe 16b, the hose hook HF of the connectingpipe 16 is engaged in thehose hook hole 40c formed in thebody case 40, and the grindingwater storage vessel 8 is disposed under the connectingpipe 16b, as shown in FIG. 12. - When the push-
button switch 75 for grinding water filtration is pushed ON from the state shown in FIG. 11(a) an LED (not shown) disposed within the push button of the push-button switch 75 goes ON as indicated with a white square in FIG. 11(b and an ON signal is applied to thecontroller 76. Upon receipt of the ON signal from the push-button switch 75 thecontroller 76 activates the grindingwater discharge pump 25. - The grinding
water discharge pump 25 sucks in the discharged grinding water from the interior of the discharged grindingwater chamber 3b in the grindingwater tank 3 together with grinding wastes and supplies the discharged grinding water containing the grinding wastes into the grindingwastes separating filter 10 through the grindingwater discharge hose 30, opening/closingvalve 47 and feed port 15 (see arrow A3 in FIG. 9). - The discharged grinding water is filtered and separated from the grinding wastes by the grinding
wastes separating filter 10 and flows down to the bottom side of the separatingvessel body 9. The discharged grinding water separated in the separatingvessel 9 becomes purified water and is conducted to the connectingpipe 16b through thedrain port 16,drain pipe 16c and opening/closing valvo 50 and also through the drain port 16', drain,pipe 16d, opening/closingvalve 90,drain pipes valve 50. This purified water is then allowed to flow down from the connectingpipe 16b into the grindingwater storage vessel 8 as indicated with arrow A5 in FIG. 12. In this way the purified water stored in the grindingwater storage vessel 8 is drained to the sewer or the like. - Such filtration is performed only during the time set by the timer T and upon lapse of the set time the
controller 76 makes control to turn OFF the grindingwater discharge pump 25 and also turn OFF the LED (not shown) installed within the push button of the push-button switch 75 as in FIG. 11(c). - In the case where the grinding
water storage vessel 8 is not used, a drain hose (not shown) may be connected to the connectingpipe 16b to drain purified water directly to the sewer through the said drain hose, - When grinding wastes are collected to a certain extent in the grinding
wastes separating filter 10 and the amount of discharged grinding water filtered by thefilter 10 decreases, the grindingwater discharge pump 26 is turned OFF. - Next, the opening/closing
valve 47 is closed by operating the open/close operating lever 47b to cut off communication between the grindingwater discharge hose 30 and thefeed port 15. At the same time, the opening/closing valves hose 31 communicate with thedrain ports 16 and 16'. On the other hand, the opening/closingvalve 49 is opened by operating the open/close operating lever 49b to provide communication between the air discharge side of theair compressor 20 and thefeed port 15. - At this time, the connecting pipe 81a of the purified water recycle hose 81 may be removed from the connecting
pipe 16b and the grindingwater storage vessel 8 may be disposed under the connectingpipe 16b, or a drain hose (not shown) connected to the sewer may be connected to the connectingpipe 16b. - If the
air compressor 20 is operated in this state, compressed air discharged from the air compressor flows into the grindingwastes separating filter 10 throughair hose 21,air regulator 48, opening/closingvalve 49 and feedport 15. The compressed air which has thus entered the grindingwastes separating filter 10 exerts a pressure on the discharged grinding water contained in the grinding wastes collected in thefilter 10, allowing the discharged grinding water to ooze out downward to produce purified water, which is flowed down co the bottom side of the separatingvessel body 9. - The purified water after separation in the separating
vessel body 9 is conducted to the connectingpipe 16b through thedrain port 16,drain pipe 16c and opening/closingvalve 50 and also through the drain port 16',drain pipe 16d, opening/closingvalve 90,drain pipes valve 60, then is drained from the connectingpipe 16b in the manner described above. - This purified water is returned into the purified grinding
water chamber 3a through the purified water recyclehose 31. However, in the case where the connectingpipe 31a of the purified water recyclehose 31 is removed from the connectingpipe 16b and the grindingwater storage vessel 8 is disposed under the connectingpipe 16b, the purified water flows down from the connectingpipe 16b into thevessel 8. The purified water stored in the grindingwater storage vessel 8 is discarded to the sewer or the like. Further, where a drain hose (not shown) connected to the sewer is connected to the connectingpipe 16b, the purified water discharged from the connectingpipe 16b is drained directly to the sewer through the said drain hose. - After the discharged grinding water contained in the grinding wastes present in the grinding
wastes separating filter 10 has been squeezed out, thelever 14 is operated to cancel the fixed state of thelid 11 to the separatingvessel body 9 with fixing screws 18. - Next, the
lid 11 is taken off from the separatingvessel body 9, then the grindingwastes separating filter 10 is removed from the interior of thevessel body 9, and the grinding wastes present in thefilter 10 is discarded. Thereafter, the grindingwastes separating filter 10 is returned to the separatingvessel body 9 and the upper portion of thevessel body 9 is closed with thelid 11 by reversing the above operation, followed by execution of the foregoing "grinding work" and "grinding water treatment," Such a grinding water treatment is repeated. - The opening/
closing valves controller 76 at the time of performing the foregoing grinding work, filtration of the discharged grinding water, deodorization, and dehydration of grinding wastes by theair pump 20. In FIG. 5, the numeral 80 denotes a remote controller provided with the same push-button switches as the push-button switches (buttons) 73, 74 and 75 provided on theoperating panel 72. - Although in this modification there are provided opening/
closing valves closing valves connection 15b (a branch portion frompipe 15a) between apipe 16a connected to thefeed port 15 andpipes 44a, 45a connected to the connectingpipes pipes pipes 16a and 44a communicate with each other and cut off communication between thepipes 15a and 44a when thepipes - If this three-way change-over valve is constituted by an electromagnotic three-way change-over valve, its switching operation can be done automatically, whereby the operability thereof is improved. This is also the case with the other opening/closing valves described above.
- Although the connecting
pipe 16b and the purified water recyclehose 31 are coupled and uncoupled to return the grinding water after the grinding water treatment into the purified grindingwater chamber 3a, allow it to flow down into the grindingwater storage vessel 8, or drain it to the sewer, there is not always made limitation to this construction. For example, a three-way change-over valve may be provided in the connectingpipe 16b to switch over between communication of thepipe 16b with the purified water recyclehose 31 and a pipe to the sewer and blocking of the communication. - Likewise, a three-way change-over valve may be provided in the connecting
pipe 16b to switch over between communication of thepipe 16b with the purified water recyclehose 31 and a pipe to the grindingwater storage vessel 8 side and blocking of the communication. - Also as to these three way change-over valves, each may be constituted by an electromagnetic three way valve, whereby their switching operations can be done automatically. Further, for attaining a higher efficiency there may be provided a multi-way change-over valve or an electromagnetic change-over valve which makes communication between the connecting
pipe 16b and one of the purified water recycle hose, 31, a pipe to the sever and a pipe to the grindingwater storage vessel 8 side. - As described above, the grinding water treating apparatus (27) according to this modification is provided with the grinding water treating means (grinding
water treating section 27a) which filters grinding water (discharged grinding water) after used in the glasses lens grinding work to separate grinding wastes and produce purified water and the deodorizing means (deodorizing device 51) for removing an offensive smell developed in the grinding water treating means (27a) and an offensive smell in the grinding water storage vessel (grinding water tank 3), the grinding water treating means (27a) and the deodorizing means (51) being disposed within tho same housing (body case 40). - According to this construction, the grinding water treating apparatus (27) having the grinding water treating means (27a) and the deodorizing means (52) can be accommodated in a limited receptacle space and thus it is possible to attain the reduction of the receptacle space.
- In the grinding water treating apparatus (27) according to this modification, the grinding water treating means (27a) has a one-pass treating means (the grinding wastes separating filter 10) which causes grinding water to pass once therethrough to filter off grinding wastes. filtration does not return to the grinding water storage vessel (grinding
water chamber 3a), but filtered water high in clarity can be drained directly to the sewer - Further, in the grindmg water treating apparatus (27) according to this modification, the one-pass treating means (10) has the pressurizing means (air compressor 20) which applies a predetermined pressure to the grinding water treating means (27a) to squeeze out and filter grinding water from grinding wastes in the grinding water treating means, thereby permitting the grinding wastes to be treated at a time.
- According to this construction, even if the one-pass treating means (10) is clogged, the grinding water present within the one-pass treating means (10) can bo separated from grinding wastes quickly, easily and positively and thus it is possible to facilitate the discard of only the grinding wastes.
- A third embodiment of the present invention will be described below. As to the same constructions and functions as in the first and second embodiments, explanations thereof will be omitted.
- In this third embodiment, as shown in FIGS. 13 to 17, a tip of a purified water recycle
hose 31, whose opposite end is connected to adrain port 16 through a connecting pipe, is held above a discharged grindingwater chamber 3b in a grindingwater tank 3 removably with use of a connector or a screw. - As shown in FIG. 17, an injection nozzle N as injection means which radially injects purified water flowing out from the
drain port 16, using a known means, is attached to the tip of the purified water recyclehose 31. - The tip of the purified water recycle
hose 31 is positioned near adischarge port 19a of a grindingwater discharge hose 19. In this case, the closer to thedischarge port 19a of the grindingwater discharge hose 19 the tip of the purified water recyclehose 31 is, the better. - In the grinding
water treating apparatus 27 of such a construction, purified water resulting from separation of grinding wastes by a grindingwastes separating filter 10 is returned into the discharged grindingwater chamber 3b in the grindingwater tank 3 through the purified water recyclehose 31. - At this time, this purified water is injected into the discharged grinding
water chamber 3b through the injection nozzle N which is positioned above thechamber 3b. - Since the tip of the purified water recycle
hose 31 with the injection nozzle N attached thereto is positioned near thedischarge port 19a of the grindingwater discharge hose 19, the water injected from the nozzle N blends with discharged grinding water flowing down from the grindingwater discharge hose 19 after use in the grinding work and at the same time can cover the portion where the discharged grinding water which is flowing down and the discharged grinding water which has already been stored in thechamber 3b strike against each other. - Thus, before grinding wastes contained in the discharged grinding water adhere fixedly to foams which are produced when the discharged grinding water flows out from the grinding
water discharge hose 19 down into the grindingwater tank 3, it is possible to inject (spray) purified water toward the inflow position of the discharged grinding water so that the discharged grinding water as inflow water and purified water after filtration blend each other, thus permitting extinction of the foams. - Moreover, since the injection nozzle N attached to the opposite end of the purified water recycle
hose 31 can inject purified water radially, it is possible to inject (spray) the purified water so as to cover substantially the whole surface of the discharged grinding water stored in the grindingwater tank 3. - Further, before the grinding wastes contained in the discharged grinding water adhere fixedly to the peripheries of foams which are produced when the discharged grinding water flows out from the grinding
water discharge hose 19 down into the grindingwater tank 3, it is possible to inject purified water radially and thereby extinguish the foams. - A divergence angle (see FIG. 17) of purified water injected by the injection nozzle N is in the range of 120° to 180°. The divergence angle can be adjusted to an arbitrary angle.
- As to the position of the tip of the purified water recycle
hose 31 with the injection nozzle N attached thereto, the closer to the discharge port of the grindingwater discharge hose 9, the better, because the injected purified water becomes easier to blend with the discharged grinding water flowing down from the grindingwater discharge hose 19 and hence it becomes easier to extinguish foams. - The discharged grinding
water chamber 3b to which purified water is returned and the purified grindingwater chamber 3a adjacent thereto are in communication with each other through apartition filter 23. Therefore, the grinding water (purified water) after separation from grinding wastes by thepartition filter 23 flows into the purified grindingwater chamber 3a and is sucked in and circulated by means of a purifiedwater recycle pump 24. - The results of having evaluated the grinding water treating apparatus of the third embodiment will be shown below.
- Evaluation items are the height of foam layer, i.e., the height of foams (cm), from the surface of grinding water relative to the time elapsed after filtration.
- The evaluation was made in the following manner. Thirty plastic lenses (CR-39) apt to produce a lot of foams were subjected to grinding continuously under constant filtration. The height of foams was measured at every ten lenses, and after grinding the thirty lenses, only filtration was conducted for 10 minutes continuously and the height of foams was measured in the same way,
- The results of this evaluation are as shown in the following Table 1.
100 101 102 103 104 106 0 0 0 106 0.5 2 10 107 2 3.5 15 108 3.5 8 15 109 3.5 8 15 110 1.5 8 15 111 1 8 15 - In Table 1, the numeral 100 stands for "Item," numeral 101 stands for "foam height (cm)," numeral 102 stands for "with injection nozzle," numeral 103 stands for "without injection nozzle," numeral 104 stands for "without filter," numeral 105 stands for "0 lens," numeral 106 stands for "10 lenses," numeral 107 stands for "20 lenses," numeral 108 stands for "30 lenses," numeral 109 stands for "0 minute after filtration," numeral 110 stands for "1 minute after filtration," and numeral 111 stands for "3 minutes after filtration."
- The results are graphed as in FIG. 18.
- In FIG. 18, numeral 112 stands for "change in foam height for each number of lens," numeral 118 stands for "foam height (cm)," numeral 114 stands for "number of lens under filtration," numeral 116 stands for "time of only filtration continued," numeral 116 stands for "with nozzle," numeral 117 stands for "without nozzle," numeral 118 stands for "FS not used," numeral 119 stands for "0 lens," numeral 120 stands for "10 lenses," numeral 121 stands for "20 lenses," numeral 122 stands for "30 lenses." numeral 128 stands for "0 minute," numeral 124 stands for "1 minute," numeral 125 stands for "3 minutes," numeral 126 stands for "5 minutes," numeral 127 stands for "7 minutes," and numeral 128 stands for "10 minutes."
- From the above results it turned out that the formation of foams could be decreased 66% by attaching the injection nozzle N to the tip of the purified water recycle
hose 31 to let purified water blend with discharged grinding water. It also turned out that most of produced foams could be extinguished by continuing filtration about 10 minutes after the grinding work. - In the grinding
water treating apparatus 27 of this third embodiment, as described above, in addition to the components of the grindingwater treating apparatus water treating means 27a is provided with the purified water recyclehose 31 for returning purified water to the grindingwater storage vessel 3, and the injection means (injection nozzle N) for injecting purified water to blend it with grinding water flowing into the grinding water storage vessel (grinding water tank 3) is attached to the tip of the purified water recyclehose 31, thereby extinguishing foams produced on the surface of the grinding water stored in thevessel 3. - According to this construction, before grinding wastes contained in grinding water adhere fixedly to foams which are produced when the grinding water flows into the grinding
water storage vessel 3, purified water is injected toward the grinding water influent position so that the influent grinding water and the purified water after filtration blend with each other, whereby the foams can be extinguished. - Moreover, in the grinding
water treating apparatus 27 of this third embodiment, the grindingwater treating means 27a is provided with the purified water recyclehose 31 for returning purified water to the grindingwater storage vessel 9, and the injection means (injection nozzle) is attached to the tip of the purified water recyclehose 31 which injection means injects purified water radially to cover the surface of the grinding water already stored within the grindingwater storage vessel 3, thereby extinguishing the foams formed on the surface of the grinding water stored in thevessel 3. - According to this construction, before grinding wastes contained in grinding water adhere fixedly to foams which are produced when grinding water flows into the grinding
water storage vessel 3, purified water is injected radially so as to cover the influent grinding water by the purified water after filtration, whereby the foams can be extinguished, - Further, in the grinding
water treating apparatus 27 of this third embodiment, the portion where the grinding water flowing into the grindingwater storage vessel 3 strikes against the grinding water already stored in the grindingwater storage vessel 3 is covered with purified water injected from the purified water recyclehose 31, - According to this construction, foams produced on the surface of the grinding water already stored in the grinding
water storage vessel 8 can be extinguished effectively. - As a fourth embodiment of the present invention, reference will be made below to a lens grinding apparatus 1' a principal portion of which is shown in FIG. 19.
- The lens grinding apparatus 1' is provided with a grinding apparatus body (not shown), a grinding water tank (grinding water storage vessel) 3 which stores discharged grinding water after use in a glass lens grinding work in the grinding apparatus body, and a grinding water supply hose (grinding water discharge hose) 19 for admitting the discharged grinding water into the grinding
water tank 3. - An injection nozzle N as injection means is attached to a
tip 19a of the grindingwater discharge hose 19 to inject the discharged grinding water radially. - The surface of discharged grinding water pre 'stored in a discharged grinding
water chamber 3b of the grindingwater tank 3 can be covered with the discharged grinding water which is injected through the injection nozzle N, and thus foams produced on the surface of the discharged grinding water can be extinguished. - As in the first embodiment, a divergence angle of the discharged grinding water injected by the injection nozzle N is in the range of 120° to 180°. The divergence angle can be adjusted to an arbitrary value.
- As described above, the lens grinding apparatus 1' of this fourth embodiment is provided with the grinding water storage vessel (grinding water tank 3) for the storage of grinding water (discharged grinding water) after use in the glasses lens grinding work and the grinding water supply hose (grinding water discharge hose 19) for admitting grinding water into the grinding
water storage vessel 3, further, the injection means (injection nozzle N) is attached to thetip 19a of the grindingwater supply hose 19 to inject grinding water radially, thereby covering the surface of the grinding water already stored in the grindingwater storage vessel 3 and extinguishing foams produced on the surface of the grinding water. - According to this construction, before grinding wastes contained in grinding water adhere fixedly to foams which arc produced during inflow of grinding water into the grinding
water storage vessel 3, grinding water is injected radially so as to cover the grinding water already stored in theveaael 3, whereby the foams can be extinguished,
Claims (7)
- A grinding water treating apparatus for use in a lens grinding apparatus, comprising a grinding water treating means which filters grinding water after use in grinding a glasses lens to separate grinding wastes and produce purified water and a deodorizing means for removing an offensive smell developed in said grinding water treating means and also in a grinding water storage vessel,
characterized in that said grinding water treating means and said deodorizing means are disposed within one and same housing. - A grinding water treating apparatus for use in a lens grinding apparatus as claimed in claim 1, characterized in that said grinding water treating means has a one-pass treating means which causes said grinding water to pass once therethrough to filter off grinding wastes.
- A grinding water treating apparatus for use in a lens grinding apparatus as claimed in claim 2, characterized in said one-pass treating means has a pressurizing means which applies a predetermined pressure to said grinding water treating means to squeeze out and filter grinding water from grinding wastes present within said grinding water treating means, thereby permitting the grinding wastes to be treated at a time.
- A grinding water treating apparatus for use in a lens grinding apparatus as claimed in claim 1, characterized in that said grinding water treating means is provided with a purified water recycle hose for returning said purified water to said grinding water storage vessel, and an injection means is attached to a tip of said purified water recycle hose, said injection means injecting said purified water to blend it with grinding water flowing into said grinding water storage vessel, thereby extinguishing foams produced on the surface of said grinding water already stored in said grinding water storage vessel.
- A grinding water treating apparatus for use in a lens grinding apparatus as claimed in claim 1, characterized in that said grinding water treating means is provided with a purified water recycle hose for returning said purified water to said grinding water storage vessel, and an injection means is attached to a tip of said purified water recycle hose, said injection means injecting said purified water radially to cover the surface of grinding water already stored in said grinding water storage vessel, thereby extinguishing foams produced on the surface of said grinding water stored in said grinding water storage vessel.
- A grinding water treating apparatus for use in a lens grinding apparatus as claimed in claim 4 or claim 5, characterized in that the portion where the grinding water flowing into said grinding water storage vessel strikes against the grinding water already stored in said grinding water storage vessel is covered with said purified water injected from said purified water recycle hose.
- A lens grinding apparatus having a grinding water storage vessol for the storage of grinding water which has been used in grinding a glasses lens and a grinding water supply hose which permits said grinding water to flow into said grinding water storage vessel,
characterized in that an injection means is attached to a tip of said grinding water supply hose, and said grinding water is injected radially by said injection means to cover the surface of grinding water already stored in said grinding water storage vessel, thereby extinguishing foams produced on the surface of said grinding water.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04077741A EP1495836B1 (en) | 2002-03-12 | 2003-03-12 | Lens grinding apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002066969A JP2003266307A (en) | 2002-03-12 | 2002-03-12 | Grinding water processor of lens grinding device |
JP2002066969 | 2002-03-12 | ||
JP2002362978 | 2002-12-13 | ||
JP2002362978A JP2004188569A (en) | 2002-12-13 | 2002-12-13 | Lens grinding and processing apparatus and grinding water treatment device used for apparatus |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04077741A Division EP1495836B1 (en) | 2002-03-12 | 2003-03-12 | Lens grinding apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1350598A2 true EP1350598A2 (en) | 2003-10-08 |
EP1350598A3 EP1350598A3 (en) | 2003-10-22 |
EP1350598B1 EP1350598B1 (en) | 2006-01-18 |
Family
ID=28043692
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030090060 Expired - Lifetime EP1350598B1 (en) | 2002-03-12 | 2003-03-12 | Grinding water treating apparatus |
EP04077741A Expired - Fee Related EP1495836B1 (en) | 2002-03-12 | 2003-03-12 | Lens grinding apparatus |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04077741A Expired - Fee Related EP1495836B1 (en) | 2002-03-12 | 2003-03-12 | Lens grinding apparatus |
Country Status (2)
Country | Link |
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EP (2) | EP1350598B1 (en) |
DE (2) | DE60311081T2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2105251A1 (en) * | 2008-03-26 | 2009-09-30 | Kabushiki Kaisha TOPCON | Method and device for treating grinding water of lens grinding device |
CN112077686A (en) * | 2020-09-28 | 2020-12-15 | 广州市鼎隆机电安装有限公司 | Electromechanical device safety maintenance device |
CN112454111A (en) * | 2020-11-26 | 2021-03-09 | 林新福 | Energy-concerving and environment-protective type polisher polishing cleaning equipment |
KR102344778B1 (en) * | 2021-06-09 | 2021-12-28 | 김도경 | Glasses lens polishing water filtration treatment device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104139337B (en) * | 2014-07-08 | 2016-08-31 | 湖州水平玻璃有限公司 | A kind of glass edge-grinding machine cooling water circulation utilization apparatus |
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2003
- 2003-03-12 EP EP20030090060 patent/EP1350598B1/en not_active Expired - Lifetime
- 2003-03-12 DE DE2003611081 patent/DE60311081T2/en not_active Expired - Fee Related
- 2003-03-12 DE DE2003603256 patent/DE60303256T2/en not_active Expired - Fee Related
- 2003-03-12 EP EP04077741A patent/EP1495836B1/en not_active Expired - Fee Related
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JPH06226629A (en) * | 1993-02-05 | 1994-08-16 | Nikon Corp | Deodorizing device for automatic lens edger |
DE4336824A1 (en) * | 1993-10-28 | 1995-05-04 | Duerr Dental Gmbh Co Kg | Device for conditioning a fluid which contains solid particles |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2105251A1 (en) * | 2008-03-26 | 2009-09-30 | Kabushiki Kaisha TOPCON | Method and device for treating grinding water of lens grinding device |
CN112077686A (en) * | 2020-09-28 | 2020-12-15 | 广州市鼎隆机电安装有限公司 | Electromechanical device safety maintenance device |
CN112454111A (en) * | 2020-11-26 | 2021-03-09 | 林新福 | Energy-concerving and environment-protective type polisher polishing cleaning equipment |
KR102344778B1 (en) * | 2021-06-09 | 2021-12-28 | 김도경 | Glasses lens polishing water filtration treatment device |
Also Published As
Publication number | Publication date |
---|---|
DE60303256D1 (en) | 2006-04-06 |
DE60303256T2 (en) | 2006-09-28 |
EP1350598B1 (en) | 2006-01-18 |
DE60311081D1 (en) | 2007-02-22 |
EP1495836B1 (en) | 2007-01-10 |
DE60311081T2 (en) | 2007-11-22 |
EP1495836A1 (en) | 2005-01-12 |
EP1350598A3 (en) | 2003-10-22 |
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