JP2006122848A - Water treatment equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water treatment apparatus for effectively removing swarf which is produced in a machining unit and has a wide particle size distribution, from non-treated water containing the swarf. <P>SOLUTION: This water treatment apparatus is provide with: an introduction system 20 for introducing the non-treated water containing the swarf produced in the machining unit 10, into a centrifugal separator 30; the centrifugal separator 30 which is provided with a water-permeable rotor 31, a swarf filter with a bottom 32 arranged detachably along the inside surface of the rotor 31 and a casing 34 for housing the rotor 31, and is used for separating swarf from the non-treated water introduced into the centrifugal separator and containing swarf; and a discharge system 40 for discharging the treated water from which the swarf is separated by the centrifugal separator 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water treatment device that separates processing waste and the like from untreated water containing processing waste generated in the processing device.

  In the spectacle lens processing, a forced dewatering device for spectacle lens processing, characterized in that cooling water containing grinding scrap is forcibly dehydrated by a dehydrator such as a centrifuge connected to the grinder. It is known (see Patent Document 1). The forced dehydration device for spectacle lens ball processing scraps described in Patent Document 1 is a centrifugal device in FIG. 1 in which plastic scraps generated by grinding are washed away together with cooling water and transmitted through the inside of a grinder 4. It is introduced into the rotating rotor 6 of the separator 5. The rotating rotor 6 is rotated at high speed by a pulley 7, a belt 8 and a motor 9. The inside of the rotary rotor 6 is a taper type with a conical taper. When the rotary rotor rotates, water in the grinding scraps moves upward along the taper, and when reaching the upper end of the rotary rotor 6, the centrifugal separator 5. It is the structure drained from the drain outlet 11 along the inner wall of the.

  There is also known a grinding water treatment apparatus provided with a one-pass treatment means for filtering grinding dust and the like by passing the grinding water once (see Patent Document 2). The grinding water treatment apparatus of the lens grinding apparatus described in Patent Document 2 in FIG. 1 filters grinding scraps by passing grinding water through the grinding water treatment apparatus (7, 27) once. One-pass processing means (grinding waste separation filter 10) is provided. The grinding waste separation filter 10 is a natural drop filter, but when the grinding waste separation filter 10 is clogged and the grinding water in the grinding waste separation filter 10 is difficult to flow down, the air compressor 19 is turned off. By operating, compressed air is supplied to the upper part of the grinding waste separation filter 10 via the air hose 21 and the three-way switching valve 17. Thereby, the grinding water retained on the upper part of the grinding waste of the grinding waste separation filter 10 passes through the grinding waste and the grinding waste separation filter 10 by the pressure of the air and flows down into the grinding water storage container 8 from the drain port 16. It is configured as follows.

Further, in Patent Document 2, in FIG. 9, the odor generated in the lens grinding apparatus 1 is sucked into the upper space of the grinding water chamber 3a of the grinding water tank 3 through the drainage hose 19, and the odor is introduced into the air hose 46a. 69, a deodorizing apparatus configured to be sucked into the deodorizing apparatus main body 52 through the filter 64 and the activated carbon 63 and then exhausted from the blower 53 is described. As a result, when the processing chamber 1c of the lens grinding apparatus 1 is opened, odors do not leak from the processing chamber 1c to the outside.
JP 2003-156718 A JP 2003-266307 A

  However, when grinding plastics lens, the grinding scrap generated at that time has a particle size distribution in a wide range from 0.1 μm to several μm, and a large amount of bubbles mixed with fine grinding scraps are generated. At the same time, filtration is difficult due to the high solid content ratio in the grinding water, and it takes time to filter with conventional devices, and it is necessary to frequently remove grinding waste from the filter and clean it. It was.

  For example, in the forced dehydration device for spectacle lens slabs described in Patent Document 1, the inner side of the rotating rotor 6 is tapered in a conical shape, and the taper portion of the rotating roller 6 is caused by the centrifugal force of water. Since it scoops up and is drained to the outside, the removal rate of bubbles generated by processing tends to be low.

  In addition, since the opening diameter of the rotating rotor is increased, the centrifuge is not only increased in diameter for the capacity, but the rotating rotor is detachable in order to discharge the grinding waste accumulated in the rotating rotor. It is difficult to configure a rotating rotor that rotates at a high speed so as not to cause lateral vibration during rotation, and it is difficult to make the operation easier, and the work of discharging grinding waste becomes troublesome. There is a problem.

  On the other hand, in the grinding water treatment apparatus of the lens grinding apparatus described in Patent Document 2, since the grinding waste separation filter 10 is a natural drop filter, it takes time to separate the grinding waste, and the filter is clogged. When an air compressor occurs, an air compressor is required to apply a pneumatic pressure to the filter to forcibly perform a dehydrating action, and there is a problem that the structure becomes complicated.

  Moreover, although the deodorizing apparatus of the lens grinding processing apparatus described in patent document 2 can deodorize in the lens grinding processing apparatus, when the grinding water processing apparatus 7 is opened, the odor which stays in the inside is outside. There is a problem of leaking. That is, deodorization in the grinding water treatment apparatus cannot be performed.

  An object of this invention is to provide the water treatment apparatus which removes a processing waste effectively from the untreated water containing the processing waste etc. in which the particle size distribution which generate | occur | produced in the processing apparatus has a wide range.

  The present invention also provides a water treatment device capable of removing processing waste from untreated water containing grinding waste generated in the eyeglass lens processing device and capable of deodorizing the inside of the processing device and the water treatment device. For other purposes.

    A water treatment device according to a first aspect of the present invention is an introduction system for introducing untreated water containing processing waste generated in the processing device into the centrifuge; a rotating water-permeable rotor; A centrifuge having a bottomed filter having a lower water permeability than the rotor detachably disposed along the inner surface and a casing for housing the rotor, and in which untreated water is introduced into the filter from the introduction system; And a discharge system that discharges treated water from which processing waste and the like have been separated by centrifugation.

  The introduction system has one end connected to the processing device and the other end connected to the centrifuge, and introduces untreated water containing processing waste generated in the processing device into the filter of the centrifuge. .

  The centrifuge includes a water-permeable rotor, and dewatering is performed by allowing untreated water to pass through a filter and a rotor described later. Therefore, the rotor is configured to have a water permeability function at the same time as a mechanical strength that can withstand high-speed rotation. The water permeable functional portion of the rotor can be formed using, for example, a metal punching structure material, a metal lath structure material, porous plastics having continuous pores with an average pore diameter of about 10 to 100 μm, and the like.

  An openable / closable rotor lid can be attached to the opening end of the rotor. The openable / closable rotor lid includes a state in which the rotor lid is removable from the rotor. By attaching the rotor lid, it is possible to prevent untreated water from overflowing from the opening end of the rotor without passing through the rotor, for example, because a filter described later is clogged. In addition, an opening end of a filter described later can be sandwiched between the opening end of the rotor and the rotor lid as desired.

  The filter is disposed so as to be lined, for example, along the inner surface side of the rotor, and is detachable from the rotor. Moreover, since the filter is bottomed and has a lower water permeability than the rotor, the processing waste is retained inside. The filter having such a configuration can be obtained by forming it into a bag shape using, for example, a water-permeable woven fabric or non-woven fabric. Furthermore, the filter may have shape retention so as to have a shape along the inner surface of the rotor, or may not have shape retention like the above-described bag shape. In the former case, it is preferable to have a shape that substantially contacts the inner surface of the rotor. In the case of not having shape retention, when the centrifugal force during rotation of the rotor acts on the filter, the filter has a shape along the inner surface of the rotor.

  A motor can be arranged to rotate the rotor so that the required centrifugal force acts. The required centrifugal force is preferably in the range of about 500 to 2000G. When the centrifugal force is less than 500 G, the centrifugal separation action is reduced, so that the filter is clogged and the untreated water easily overflows from the rotor even though the processing amount of the processing apparatus is not so large. Further, when the centrifugal force exceeds 2000 G, the processing waste in the filter is densely solidified and pressed against the inner surface of the rotor with the filter interposed therebetween, making it difficult to remove the filter from the rotor. The rotor and the motor are directly connected to each other, or are connected through an appropriate means among various known rotational force transmitting means such as a belt and pulley mechanism and a gear mechanism. The motor may be disposed inside a casing, which will be described later, or may be disposed outside.

  The casing accommodates at least the rotor in a rotatable manner, collects treated water that has permeated the rotor under the action of centrifugal force and came out of the casing, and supplies the collected water to a treated water discharge system described later. The casing is connected to an untreated water introduction system to introduce untreated water containing processing waste and the like into the centrifuge. Furthermore, the casing is preferably provided with a rotor lid in order to take out the processing waste separated from the untreated water to the outside. The rotor lid can be formed with an opening for connection of an untreated water introduction system, which will be described later.

  One end of the discharge system is connected to the centrifugal separation, and the other end is connected to the processing water circulation system or the waste water system. In addition, a circulation system is a system for reusing as processing water with a processing apparatus. The waste water system is a system for discarding treated water into sewage. If desired, a circulation system and a waste water system can be switched using a three-way valve or the like.

  In addition, in the above, the connection means not only that it is mechanically coupled but also means that it may not be mechanically coupled as long as the grinding water can be moved in the path. It has been.

  Then, in the water treatment apparatus of the present invention, the processing waste generated when desired processing is performed while applying the processing water in the processing apparatus is mixed with the processing water and flowed as untreated water, It is introduced into the centrifuge via an untreated water introduction system.

  The untreated water introduced into the centrifuge falls into the inside from the opening of the filter. Since the filter rotates together with the rotor while forming a cylindrical shape on the inner surface of the rotor, when untreated water falls inside, the centrifugal force acts to compete upward along the inner surface of the filter. In the process, some of the moisture permeates through the filter and rotor and scatters into the casing. On the other hand, processing wastes and bubbles are trapped on the inner surface of the filter.

  The treated water, which is removed when the processing waste or the like remains in the filter and scatters into the casing, is cleaned, gathers in the casing, and is supplied to the discharge system. The treated water discharged from the discharge system can be returned to the processing water tank or the like for reuse, or discarded into sewage if desired.

  On the other hand, the processing debris accumulated in the filter disposed in the centrifuge rotor can be removed by removing the filter in the rotor after stopping the rotation of the centrifuge. it can. The filter may be disposable, or may be reused by taking out processing waste from the inside and washing it with water. Depending on the capacity of the centrifuge and the filter, when the processing device is a spectacle lens processing device, even if the centrifuge is smaller than the spectacle lens processing device, the processing waste inside the filter is not discharged, and about 100 to About 200 eyeglass lenses can be processed.

  Even if fine machining waste passes through the filter without being captured, the amount of the machining waste is a little, but due to the auxiliary filter action of the rotor, the water-permeable functional part of the rotor (especially when the rotor is porous plastics) It is deposited and captured on the inner surface. Further, the accumulated processing waste forms an intermediate layer between the inner surface of the rotor and the filter. By forming this intermediate layer, finer processing scraps are easily captured.

  On the other hand, when the intermediate layer is formed, it will eventually be necessary to remove this intermediate layer, but since most of the processing waste is captured by the filter, the maintenance cycle for removing this is very long. Become. Therefore, although some maintenance is required, the maintenance is relatively easy and the water treatment apparatus has a high purification effect.

  Therefore, the rotor has an auxiliary filter function for preventing extremely fine machining waste from leaking from a grinding dust filter, which will be described later, when the water-permeable functional portion is formed of porous plastics having open cells. And a lightweight rotor can be configured, and is particularly suitable for the present invention.

    A water treatment device according to a second aspect of the present invention is the water treatment device according to the first aspect, wherein the introduction system introduces untreated water containing processing waste generated in the processing device into the centrifuge. The centrifuge is provided with a deodorizing device that sucks the air inside and deodorizes the processing device and the centrifuge so that air can move between the processing device and the centrifuge. Yes.

  In the present invention, the centrifuge may have any configuration as long as the processing waste in the untreated water is separated by the rotation of the rotor. However, the configuration according to the first aspect of the invention is preferable.

  The deodorizing apparatus can include deodorizing means and negative pressure generating means for the above-described configuration. The deodorizing means is means for removing odors in the sucked air, and known deodorizing substances such as a photocatalyst and activated carbon can be used. The negative pressure generating means may have any configuration as long as the air in the centrifuge can be sucked. For example, an air blower, an air pump, or the like can be employed as appropriate.

  Thus, in the present invention, the air containing the odor in the processing apparatus is sucked into the centrifuge together with the untreated water via the introduction system, and further the air containing the odor generated in the centrifuge Together, it is sucked into the deodorizing device and deodorized. For this reason, not only odors such as odors containing sulfur, which are generated in the processing apparatus, are deodorized, but similar odors generated in the centrifuge are also deodorized at the same time.

    The water treatment device according to a third aspect of the present invention is the water treatment device according to the first or second aspect, wherein the centrifugal separator has a water permeable functional portion made of porous plastics.

  In the present invention, even if fine machining waste is permeated through the filter without being captured, the machining waste is deposited on the inner surface of the water-permeable functional portion of the rotor by the auxiliary filter action of the rotor, although the amount is small. Be captured. Further, the accumulated processing waste forms an intermediate layer between the inner surface of the rotor and the filter. By forming this intermediate layer, finer processing scraps are easily captured by the intermediate layer.

  On the other hand, when the intermediate layer is formed, it is necessary to remove this intermediate layer. However, since most of the processing waste is captured by the filter in advance, the maintenance cycle for removing the intermediate layer is very It will be long. Therefore, although some maintenance is required, the maintenance is relatively easy, and a water treatment device having a high purification effect can be obtained even if it is not large.

  Therefore, when the water permeable functional part is formed of porous plastics having open cells, the rotor exhibits an auxiliary filter function that prevents this when fine grinding chips leak from the grinding chip filter. In addition, a lightweight rotor can be configured, which is effective.

  According to the first aspect of the present invention, the processing waste is effectively separated from the untreated water containing the processing waste having a wide particle size distribution generated in the processing apparatus, and the separated processing waste is easily separated. A removable water treatment apparatus can be provided.

  According to invention of Claim 2, while removing a processing waste from the untreated water containing the processing waste etc. which generate | occur | produced in the processing apparatus, the water treatment apparatus which can deodorize in a processing apparatus and a water treatment apparatus is provided. can do.

  According to the invention of claim 3, since the water-permeable functional part of the rotor is formed of porous plastics, a minute amount of fine processing waste that has leaked the filter is well captured on the inner surface of the rotor. It is possible to provide a water treatment device having a higher purification effect.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

    1 to 3 show a first embodiment for carrying out a grinding water treatment apparatus of an eyeglass lens processing apparatus according to the present invention. FIG. 1 is a schematic diagram of a centrifuge and a processing system, and FIG. FIG. 3 is a schematic cross-sectional view of a centrifuge showing a state in which grinding scraps are accumulated. In each figure, 10 is a processing apparatus, 20 is an introduction system, 30 is a centrifuge, 40 is a discharge system, 50 is a processing water tank, and 60 is a processing water supply system.

  The processing device 10, for example, a spectacle lens processing device is shown as a block in FIG. 1, but is a device that performs processing such as grinding a workpiece, for example, a spectacle lens into a desired shape and surface state. It is allowed to be a thing. And in the case of the spectacle lens processing apparatus, a mechanism for holding and rotating the spectacle lens to grind the spectacle lens, a grinding mechanism having a rotating grindstone for grinding the outer periphery of the spectacle lens, a contact portion between the rotating grindstone and the spectacle lens And a processing water nozzle for flowing the processing water to the surface, and an untreated water collecting section for collecting untreated water containing processing waste after processing. Further, the processing apparatus 10 includes a transparent protective cover that can be freely opened and closed, and the protective cover is placed on a predetermined position of the processing apparatus 10 during a processing operation.

  The introduction system 20 is preferably made of a flexible hose made of transparent plastics, etc., and connects the processing device 10 and the centrifuge to collect the processing waste collected in the processing water collecting portion of the processing device 10. The untreated water contained is introduced into a centrifuge 30 described later.

  The centrifuge 30 includes at least a water-permeable rotor 31, a filter 32, a motor 33, and a casing 34. The centrifuge 30 can be controlled to start and end simultaneously with the processing apparatus 1. The rotor 31 can be forcibly stopped using a brake at the end of the operation. However, when the natural stop is to be performed, the rotor 31 passes after about 1-2 minutes after the power of the motor 33 is stopped. It is recommended that the grinding scraps be taken out after completely stopping.

  The water-permeable rotor 31 has a bottomed cylindrical shape including a cylindrical water-permeable functional portion 31a, and the rotation center of the bottom surface is coupled to the rotation shaft 31b. And the water-permeable functional part 31a consists of porous polyethylene which has a continuous pore. Moreover, the water-permeable rotor 31 is equipped with the rotor lid | cover 31c so that attachment or detachment is possible at the opening end. The rotor lid 31c has an untreated water inlet 31c1 at the center thereof. The untreated water introduction port 31 c 1 acts so as to introduce untreated water into the filter 32 from there. Further, as shown in FIG. 2, the untreated water introduction port 31 c 1 is further turned back to the inner side of the rotor 31, and the filter 32 described later is clogged, and the untreated water exceeds the opening end of the rotor 31. Acts so as to be folded back into the rotor 31.

  The filter 32 has a bottom and is made of a flexible fibrous material such as a woven fabric or a non-woven fabric, and has a bag shape, for example. Then, it rotates along with the rotor 31 in contact with the inner surface of the rotor 31. Moreover, when attaching the rotor lid | cover 31c to the rotor 31, the peripheral part of the opening end of the filter 32 is clamped between the end surface of the rotor 31 and the rotor lid | cover 31c. The rotor lid 31c and the rotor 31 can be fixed using, for example, stud bolts and nuts, or using clamp fittings (both are not shown). In the former case, a stud bolt is planted at the opening end of the rotor 31, and an insertion hole formed in the peripheral edge portion of the opening end of the filter 32 is inserted into this stud bolt, and then formed in the peripheral portion of the rotor lid 31c. Insert the through-holes or cutouts, and finally screw in the nuts to fix the three.

  The motor 33 is an electric motor and is directly connected to the rotary shaft 31b. And the motor 33 is arrange | positioned under the casing 34 mentioned later.

  The casing 34 accommodates the rotor 31 rotatably. In this embodiment, the casing 34 also houses the motor 33. The casing 34 includes a partition wall 34a, a treated water discharge hole 34b, and an open / close lid 34c. The partition wall 34 a is disposed so as to collect treated water that has permeated the rotor 31 and scattered in the casing 34. The rotating shaft 31b of the rotor 31 penetrates the partition wall 34a in a watertight and rotatable manner. The treated water discharge hole 34b is a hole for discharging the treated water gathered by the partition wall 34a. The open / close lid 34 c is disposed on the upper surface of the casing 34. The casing main body 34d is watertight and can be opened and closed. When the open / close lid 34c is opened, the upper surface of the rotor 31 is visible, so that the rotor lid 31c can be attached and detached and the filter 32 can be attached and detached. In addition, an opening 34c1 is formed in the opening / closing lid 34c, and the discharge end portion of the introduction system 2 is inserted.

  The discharge system 40 communicates so that the treated water flows from the treated water discharge hole 34b of the casing 34 to the processed water tank 5 described later. Although not shown in FIG. 1, if desired, a three-way valve or the like may be interposed in the middle so that the treated water can be switched to flow into a movable container such as sewage or a bucket.

  The processing water tank 50 is disposed, for example, in a mounting table of the processing apparatus 10 so as to store clean processing water therein and supply it to the processing apparatus 10.

  The processing water supply system 60 supplies a required amount of processing water from the processing water tank 50 to the processing apparatus 10 using a pump or the like.

The outer diameter of the rotor 31 of the centrifuge is 30 cm, the thickness of the water permeable functional portion 31a is 8 mm, the average diameter of continuous pores is 50 μm, and the rotational speed is 3000 rpm (about 1000 G).
Even after 150 glasses lenses were processed, the processing waste could be centrifuged. In FIG. 3, the code | symbol S has shown the processing waste centrifuged. The processing waste S is solidified and accumulated in a cylindrical shape along the inner surface of the filter 32. In addition, in a slight gap g formed between the inner surface of the cylindrical water-permeable functional portion 31a of the rotor 31 and the filter 32, a minute amount of fine processing waste that has leaked from the filter 32 accumulates in the middle. Form a layer. And the said intermediate | middle layer contributes to supplementing the trace amount minute processing waste which leaked the filter 32. FIG.

    FIG. 4 is a schematic diagram of a centrifuge and a treatment system showing a second embodiment for carrying out the water treatment apparatus of the present invention. In the figure, the same parts as those in FIG. This embodiment is different from the first embodiment in that a deodorizing device 70 that mainly deodorizes by sucking air in the centrifuge 30 is added to the centrifuge 30.

  The deodorizing device 70 includes a deodorizer body 71, an air suction port 72, and an air blowing port 73.

  The deodorizer main body 71 includes deodorizing means and air suction means inside. The deodorizing means is mainly composed of a photocatalyst, its photoactivation lamp, and a mechanical filter.

  The air inlet 72 is connected to the casing 34 of the centrifuge 30 to introduce the air in the casing 34 into the deodorizer body 71.

  The air outlet 73 blows out the air deodorized in the deodorizer body 71 to the outside.

  On the other hand, the introduction system 20 introduces untreated water containing processing waste generated in the processing apparatus 10 into the centrifuge 30, and air moves between the processing apparatus 10 and the centrifuge 30. It is constructed using a flexible hose made of transparent plastics with a large inner diameter so as to communicate with each other.

  Then, when the processing apparatus 10 is turned on and simultaneously the centrifuge 30 and the deodorizing apparatus 70 are turned on to perform processing, a strong odor containing processing waste, bubbles, and sulfur is generated. The processing waste is contained in the processing water, introduced into the centrifuge 30 via the introduction system 20, and centrifuged in the filter 32. The treated water returns to the processed water tank 50 via the discharge system 40 and is reused. The above operation is the same as in the first embodiment.

  On the other hand, in the deodorizing device 70, the air suction port 72 sucks air inside the centrifuge 30. Since the air in the processing device 10 flows into the inside of the centrifuge 30 through the introduction system 20, the air in the processing device 10 and the air in the centrifuge 30 are eventually removed from the air suction port 72. It will be sucked into 71. The air sucked into the deodorizing machine main body 71 is deodorized by the deodorizing means, and is discharged from the air outlet 73 to the outside.

  Therefore, the deodorization inside the processing device 10 and the centrifuge 30 is performed by the deodorization device 70. Therefore, even if the protective cover of the processing device 10 is opened, the opening / closing lid 34c of the casing 34 of the centrifuge 30 is opened. However, it does not feel odor or becomes difficult to feel.

1 shows a first embodiment for carrying out a water treatment apparatus of the present invention, and FIG. 1 is a schematic diagram of a centrifuge and a treatment system. Similarly, a schematic cross-sectional view showing the main part of the centrifuge Schematic cross-sectional view of the centrifuge showing the state where the processing waste remains Schematic diagram of centrifuge and treatment system showing a second embodiment for carrying out the water treatment apparatus of the present invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Processing apparatus, 20 ... Introduction system, 30 ... Centrifuge, 31 ... Rotor, 31a ... Water-permeable functional part, 31c ... Rotor lid, 31c1 ... Opening, 32 ... Filter, 33 ... Motor, 34 ... Casing, 34a ... Septum 34b ... treated water discharge port, 34c ... open / close lid, 34c1 ... opening, 34d ... casing body, 40 ... discharge system, 50 ... processed water tank, 60 ... processed water supply system

Claims (3)

An introduction system for introducing untreated water containing processing waste generated in the processing apparatus into the centrifuge;
A rotating water-permeable rotor, a bottomed filter having a lower water permeability than a rotor detachably disposed along the inner surface of the rotor, and a casing for housing the rotor, and untreated water from the introduction system to the inside of the filter A centrifuge into which is introduced;
A discharge system for discharging treated water from which processing waste and the like have been separated by centrifugation;
The water treatment apparatus characterized by comprising. The introduction system introduces untreated water containing processing waste generated in the processing apparatus to the centrifuge, and is provided so that air can move between the processing apparatus and the centrifuge. There;
The centrifuge is equipped with a deodorizing device for sucking and deodorizing the air inside it;
The water treatment apparatus according to claim 1. The water treatment apparatus according to claim 1 or 2, wherein the water-permeable functional part of the rotor of the centrifuge is made of porous plastics.

Images