JP5317887B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning apparatus for cleaning fine metal powder, metal particles, and the like using a cleaning liquid containing bubbles. This is mainly related to degreasing and cleaning of cutting scraps, but is not limited to this. For example, removal and cleaning of oil and grease adhering to fine metal workpieces such as small bearing balls, small screws and small setting materials. It can also be applied to.

  In the past, in the field of industrial cleaning, chlorofluorocarbon solvents, organic solvents, and other hydrocarbon cleaning agents have been used. As a result, it has been clarified that it induces environmental problems such as ozone layer destruction and groundwater, river, and ocean pollution. Therefore, development of a cleaning method and a cleaning apparatus that do not use these cleaning agents is being promoted for the purpose of reducing the environmental burden. In addition, not only parts and products, including metal workpieces, but also scraps generated during these processes are being disposed or reused in consideration of environmental impacts as the objects to be cleaned. There has been a demand for an apparatus capable of efficiently cleaning a body / granular object to be cleaned.

  As a method for cleaning metal powder such as cutting waste and metal particles, a method of degreasing by washing with isopropyl alcohol or acetone has been proposed (for example, see Patent Document 1). However, in this method, organic solvents such as isopropyl alcohol and acetone are used as cleaning solvents, and it is clear that these organic solvents induce environmental problems such as destruction of the ozone layer, groundwater, rivers, and ocean pollution. In recent years, cleaning methods and apparatuses that do not use these cleaning agents are desirable for the purpose of reducing environmental impact.

  From these viewpoints, as a technique for removing oils and fats adhering to the object to be cleaned by water and fine bubbles, the object container containing the object to be cleaned is immersed in the cleaning liquid, and the bubbles are rotated while rotating the object container to be cleaned. There has been proposed an apparatus for removing oils and fats adhering to an object to be cleaned by bringing a mixture of fine bubbles ejected from the generating part and the cleaning liquid into contact with the object to be cleaned (see, for example, Patent Document 2).

  However, in the apparatus disclosed in Patent Document 2, the object to be cleaned must be accommodated in the object to be cleaned and cleaned. There is a problem that the mesh of the container becomes fine, the speed at which the fine bubbles and the cleaning liquid come into contact with the object to be cleaned is hindered, and the cleaning ability is lowered. Further, in this type of apparatus, it is necessary to pull up and carry out the cleaning object container after cleaning, and there is a problem of redeposition due to contact with bubbles containing oil and fat floating on the upper part of the cleaning liquid. Furthermore, since a certain amount of the object to be cleaned is put into the object to be cleaned and cleaned, the cleaning process becomes a batch process, and there is a problem that manpower is required to put in and out the object to be cleaned.

  As a device that enables continuous processing and automates it, a cleaning basket containing cutting waste is attached to an inclined endless chain conveyor, and this is moved intermittently to sequentially process the steps of immersion in inorganic aqueous solution, sprinkling cleaning, and dehydration. An apparatus has been proposed (see, for example, Patent Document 3).

JP 2003-057883 A JP 2005-296786 A JP 07-258874 A

  Since the conventional cleaning apparatus is configured as described above, an apparatus that is automated to enable continuous processing requires a water tank facility for each processing stage in order to sequentially perform multi-stage processing, and the entire equipment becomes large. There was a problem.

  The present invention has been made to solve the above-described problems, and effectively performs cleaning by bringing fine bubbles into direct contact with the object to be cleaned, and is separated from the object to be cleaned and mixed with the cleaning liquid. It is an object of the present invention to obtain a cleaning device capable of separating the cleaning solution and the like quickly to ensure the cleanliness of the cleaning solution and capable of continuous automatic operation without human intervention.

Cleaning apparatus according to the present invention includes a cleaning tank having a pivot shaped flow path portion formed by the partition member, to generate a stream by mixing fine bubbles and the cleaning liquid in the flow path of the handed circular, the handed circular comprising a cleaning means for cleaning the object to be cleaned with the passage portion, the oil-water separating means for separating the oils and fats and foreign matter from the washing liquid after rinsing, a mixing tank for mixing the object to be cleaned and the cleaning liquid, mixing tank, There is an object throwing means that communicates with the upper side of the swirling channel in the cleaning tank, and the object throwing means passes through the swirling channel and enters the inner peripheral wall of the washing tank. The cleaning tank has a negative pressure generating means on the inner peripheral wall in the vicinity of the object to be cleaned input port, and the mixture of the object to be cleaned and the cleaning liquid is brought into the cleaning tank by the negative pressure generated by the negative pressure generating means. It is characterized by sucking in .

According to the present invention, the cleaning tank having the swirl-shaped channel portion formed by the partition member, and the swirl-shaped channel portion generates a flow by mixing the fine bubbles and the cleaning liquid. A cleaning means for cleaning an object to be cleaned, an oil / water separation means for separating oil and fat and foreign matter from the cleaning liquid after cleaning, and a mixing tank for mixing the object to be cleaned and the cleaning liquid. The object to be cleaned is connected to the upper side of the channel-shaped flow path part, and the object to be cleaned is inserted into the swirl-shaped channel part to form an object input port on the inner peripheral wall of the cleaning tank, The cleaning tank has negative pressure generating means on the inner peripheral wall in the vicinity of the object to be cleaned so that the mixture of the object to be cleaned and the cleaning liquid is sucked into the cleaning tank by the negative pressure generated by the negative pressure generating means. Since it is configured, it is necessary to provide special stirring means, acceleration means, and holding means for holding the object to be cleaned. No it can be cleaned efficiently and continuously to be washed with a simple construction.

It is sectional drawing which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a fragmentary sectional view which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the washing tank which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the negative pressure generation means which concerns on Embodiment 1 of this invention. It is a figure which shows the flow of the fine bubble and swirl | vortex flow of the washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 4 of this invention. It is a figure which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 5 of this invention. It is sectional drawing which shows the structure of the washing | cleaning apparatus which concerns on Embodiment 6 of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing the configuration of the cleaning apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a partial cross-sectional view showing the configuration of the cleaning apparatus according to Embodiment 1 of the present invention. In the following, an embodiment that is optimal for cleaning mainly using metal cutting waste or the like is shown, but the object to be cleaned is not limited to this.

  The cleaning apparatus according to the first embodiment includes a cleaning tank 10 having a cylindrical shape for cleaning an object to be cleaned, a gas-liquid mixing ejector (cleaning means) 20, a mixing tank 30 for mixing an object to be cleaned and a cleaning liquid, and a cleaning tank 10. An overflow tank 40 disposed on the upper outer side, an oil / water separation tank (oil / water separation means) 50 for separating the washed liquid after washing, and a draining tank 60 for draining an object to be washed. The cleaning tank 10 has a first partition 11 and a second partition 12 having an opening at the center near the axial center of the cylindrical shape. By providing the first partition 11 and the second partition 12 inside the cleaning tank 10, a swirl-shaped flow path portion 14 through which the object to be cleaned passes while swirling is formed. A plate-like fine mesh member 15 having fine mesh-like holes is installed in the upper part of the washing tank 10 to prevent the object to be washed from rising together with the fine bubbles and flowing out of the washing tank 10. .

  Here, the fine bubbles are fine bubbles that are spherical. A normal large bubble different from a fine bubble has a distorted shape instead of a spherical shape due to a drag from the water that is received when it floats in the water. On the other hand, it is widely known that fine bubbles are spherical without distortion due to water drag due to high pressure inside the bubbles. Specifically, when the bubble diameter d is 1 mm or less, the bubbles are spherical. Furthermore, additives such as alcohol compounds and surfactants having an effect of stably maintaining fine bubbles are added to the cleaning liquid. For example, specific examples of the additive include a substance having a carboxyl group and an amino group in the molecule, the molecular weight divided by the number of carboxyl groups being 94 to 280, a molecule having a plurality of hydroxyl groups, and a molecular weight of the hydroxyl group. A substance divided by the number of 38 to 73 or less, having an ester group in the molecule, and a substance having a molecular weight divided by the number of ester groups of 47 to 140 or having a sulfonic acid group in the molecule And a substance having a molecular weight divided by the number of sulfonic acid groups of 47 or more and 140 or less. By adding a small amount of these additives into the cleaning liquid (0.001 mol / L or more and 1 mol / L or less), the effect of stably maintaining fine bubbles is exhibited.

  The area of the opening of the first partition 11 is formed to be larger than the area of the opening of the second partition 12. Thereby, the swirling of the cleaning liquid on the upper side of the swirling flow path portion 14 can be intense, and the swirling of the lower cleaning liquid can be gently configured. Further, the second partition 12 has a recess that forms a plurality of outer peripheral openings 13 between the outer peripheral surface and the inner peripheral wall of the cleaning tank 10.

  The gas-liquid mixing ejector 20 is disposed so as to be inserted from the outside of the cleaning tank 10 in a direction along the inner peripheral wall. The gas-liquid mixing ejector 20 has openings at both ends, and one opening is located in the cleaning tank 10. The opening located outside the other washing tank 10 is connected to a water pump 22 via a compressed water introduction pipe 21 and to an air pump 24 via a compressed air introduction pipe 23. By using the water pump 22 and the air pump 24, the gas-liquid mixture is ejected into the swirling flow path portion 14 of the cleaning tank 10 to form a swirling flow. Further, a clogging detection unit 25 that automatically detects clogging when a minute object to be cleaned is clogged is provided near the connection port between the bubble mixing ejector 20 and the compressed water introduction pipe 21. . Further, a check valve 26 for preventing the backflow of the cleaning liquid is provided in the vicinity of the connection port between the bubble mixing ejector 20 and the compressed air introduction pipe 23.

  FIG. 3 is a diagram showing the configuration of the cleaning tank according to Embodiment 1 of the present invention. One or more gas-liquid mixing ejectors 20 are arranged. In the example of FIG. 3, the gas-liquid mixing ejectors 20 are provided at four locations at regular intervals with respect to the outer periphery of the cleaning tank 10, and all the openings located inside the cleaning tank 10 are arranged in the counterclockwise direction. . With this arrangement, when the gas-liquid mixture is ejected using the water pump 22 and the air pump 24, a counterclockwise swirling flow indicated by an arrow A is formed. The air supplied to the gas-liquid mixing ejector 20 may be a method using natural intake due to the effect of the throttle structure of the gas-liquid mixing ejector 20 in addition to the compressed air by the air pump 24. Four outer peripheral openings 13 of the second partition 12 are provided at equal intervals on the outer peripheral portion.

  The mixing tank 30 is a tank that mixes an object to be cleaned and a cleaning liquid introduced from above. The mixing tank 30 has a mixing tank communication pipe 31 that communicates with the upper part of the first partition 11 of the cleaning tank 10, and the cleaning liquid in the cleaning tank 10 is taken into the mixing tank 30 through the mixing tank communication pipe 31. . Further, a cleaning object input pipe (object to be cleaned input means) 32 extending from the lower part of the mixing tank 30 communicates with the swirling flow path portion 14 in the cleaning tank 10. A negative pressure generating means 33 is provided at an opening (object to be cleaned input port) located in the cleaning tank 10 of the object charging pipe 32.

  FIG. 4 is a diagram showing the configuration of the negative pressure generating means according to Embodiment 1 of the present invention. The negative pressure generating means 33a shown in FIG. 4 (a) is a streamlined cover, and is disposed so as to cover the tip opening of the cleaning object charging pipe 32 inserted into the cleaning tank 10, and has a swirling shape. An opening is provided on the downstream side of the swirling flow A of the flow path section 14. Further, the negative pressure generating means 33b shown in FIG. 4 (b) is a recess provided in the inner peripheral wall of the cleaning tank 10 in the vicinity of the opening of the tip of the cleaning object input pipe 32. When the swirling flow A passes through this recess, the swirling flow velocity is locally reduced, and negative pressure is generated. Thus, the negative pressure generating means 33 can be appropriately changed as long as it is configured to generate a negative pressure in the swirling flow path portion 14.

  The overflow tank 40 is disposed outside the upper part of the cleaning tank 10 and has a cylindrical shape like the cleaning tank 10. The overflow tank 40 receives the cleaning liquid overflowing from the upper end of the cleaning tank 10 and discharges the received cleaning liquid to the oil / water separation tank 50 via the liquid feeding pipe 41.

  The oil / water separation tank 50 is configured to be separated into at least three tanks of a first separation tank 53, a second separation tank 54, and a third separation tank 55 by a first partition plate 51 and a second partition plate 52. The 1st partition plate 51 is joined to the bottom part of the oil-water separation tank 50, and the 1st separation tank 53 and the 2nd separation tank 54 are connected by the upper part. The second partition plate 52 is not joined to the bottom of the oil / water separation tank 50, and the second separation 54 and the third separation tank 55 communicate with each other at the lower part. With these configurations, the oil and fat remains in the upper part of the first separation tank 53 and the second separation tank 54, and a cleaning liquid that does not contain the oil and fat can be stored in the third separation tank 55. A discharge pipe 56 connected to the water pump 22 is inserted in the vicinity of the center of the third separation tank 55, and the cleaning liquid that does not contain oil and fat in the third separation tank 55 can be circulated into the cleaning tank 10. Moreover, the horizontal partition plate 57 is installed in the 2nd separation tank 54, and bubble entrainment is prevented.

  The lower part of the cleaning tank 10 is constricted in a conical shape, and a cleaning object reservoir 16 formed in a substantially L shape at the conical tip portion, and a carry-out amount adjusting throttle 17a is provided at the leading end portion of the cleaning object reservoir 16. In addition, a carry-out port 17 is formed for carrying out the washed object together with the washing liquid to the outside of the washing tank 10. The carry-out amount adjusting throttle 17 a is a throttle for adjusting the carry-out amount based on the amount of the object to be cleaned put into the cleaning tank 10 and the amount of the cleaning liquid flowing from the gas-liquid mixing ejector 20.

  Below the carry-out port 17, a draining tank 60 having a filter 61 for filtering out the object to be cleaned from the mixture of the object to be cleaned and the cleaning liquid is disposed. A vibration applying unit 62 is attached to the filter 61. Thereby, draining by the filter 61 is promoted. Further, the draining layer 60 is provided with a rinsing water supply part 63 for the case where water washing is necessary, and a drying blower 64 for improving the drying property of the object to be washed. Further, a discharge pipe 65 is inserted near the bottom of the draining tank 60. The cleaning liquid drained and collected by the filter 61 is introduced into the first separation tank 53 of the oil / water separation tank 50 through the discharge pipe 65 and the circulation pump 66 to which the discharge pipe 65 is connected.

  Next, the operation of the cleaning apparatus according to the first embodiment will be described. As shown in FIG. 3, the gas-liquid mixing ejector 20 is attached at four locations along the inner periphery of the cylindrical cleaning tank 10, so that the cleaning liquid ejected from the gas-liquid mixing ejector 20 is mixed with fine bubbles. The body becomes a gas-liquid mixed fluid that swirls vigorously in the swirl-shaped flow path portion 14. On the other hand, when an object to be cleaned is input from the upper part of the mixing tank 30, the object to be cleaned input pipe 32 communicating with the swirling flow path portion 14 and the negative pressure generating means 33 provided in the swirling flow path portion 14. Due to the generated negative pressure effect, the mixture of the object to be cleaned and the cleaning liquid in the mixing tank 30 is sucked into the cleaning tank 10 and introduced into the swirling channel portion 14. In addition, the cleaning liquid flows into the mixing tank 30 through the mixing tank communication pipe 31, and the cleaning liquid and the object to be cleaned are mixed inside the mixing tank 30.

The object to be cleaned put into the swirl-shaped flow path portion 14 violently collides with the high-speed cleaning liquid and fine bubbles supplied from the gas-liquid mixing ejector 20, and the attached oil and fat are separated and adsorbed by the fine bubbles. To go. As a result, the object to be cleaned can be efficiently cleaned in a short time without providing any special stirring means or acceleration means.
In order to further enhance the cleaning effect, it is preferable that the angle of the swirling channel portion 14 can be changed as appropriate. This is to improve the contact probability between the fine bubbles and the object to be cleaned. Further, a member for disturbing the flow, such as a flat plate, may be installed in the swirling channel portion 14 at an angle of several tens of degrees or more and 90 degrees or less. As a result, in addition to disturbing the flow as described above, the object to be cleaned is temporarily blocked by the flat plate, and the fine bubbles come into contact therewith, leading to the effect of increasing the cleaning power.

  In the swirl-shaped flow path section 14, as the cleaning liquid, fine bubbles, and the object to be cleaned are swirled, the fine bubbles that have adsorbed oil and fat accumulate in the central portion of the swirl flow due to the effect of the specific gravity difference with water. Ascending from the central opening of the first partition 11 provided on the upper side of the swirling flow path portion 14 toward the upper portion of the cleaning tank 10.

  On the other hand, the cleaning object swirling in the swirling flow path portion 14 swirls around the outer periphery of the swirling flow path portion 14 due to the effect of the specific gravity difference with water. It sinks toward the lower part of the washing tank 10 from the outer periphery opening part 13 of the 2nd partition 12 provided in the lower side. In this way, the object to be cleaned is cleaned while swirling the swirl-shaped flow path part 14, bubbles containing oil and fat are moved to the upper side of the swirl-shaped flow path part 14, and the cleaned object to be cleaned is swirl-shaped flow path. Separation to the lower side of the portion 14 can suppress the reattachment of fats and oils to the object to be cleaned after cleaning.

  Next, the movement of the fine bubbles and the swirling flow that have moved to the upper side of the swirling flow path portion 14 will be described. FIG. 5 is a diagram showing the flow of fine bubbles and a swirling flow in the cleaning apparatus according to Embodiment 1 of the present invention. In the upper part of the cleaning tank 10, a swirling flow is generated along with the high-speed swirling flow of the swirling flow path portion 14 through the central opening of the first partition 11 located above the swirling flow path portion 14. As shown in FIG. 4, since this swirl flow is a gas-liquid two-layer flow in which the cleaning liquid is distributed outside the swirl and the gas is distributed in the central part of the swirl, fine bubbles containing oil and fat are accumulated in the central part. To rise. The fine bubbles that have reached the swirling water surface ride on the flow of water toward the outer periphery of the upper end of the cleaning tank 10 and flow out of the upper end of the cleaning tank 10 into the overflow tank 40 as an overflow flow. In this way, since the fine bubbles containing the oil and fat move quickly to the overflow tank 40, the oil and fat can be effectively discharged, and the cleaning liquid can always be kept clean.

  The cleaning liquid that has flowed into the overflow tank 40 is introduced into the oil / water separation tank 50 via the liquid supply pipe 41. In the first separation tank 53, the cleaning liquid flowing in is strong and the cleaning liquid is stirred. Since the 1st separation tank 53 and the 2nd separation tank 54 are partitioned off by the 1st partition plate 51, the washing | cleaning liquid in the 2nd separation tank 54 will be in the state left still, and the oil-fat content and oil-fat content which are contained in a washing | cleaning liquid The bubbles adsorbed on the surface float on the surface of the second separation tank 54.

  On the other hand, the purified cleaning liquid at the bottom of the second separation tank 54 flows into the third separation tank 55 through the lower part of the second partition plate 52. In the third separation tank 55 from which air bubbles containing floating oil and fat components have been removed, it is taken out of the oil / water separation tank 50 by a discharge pipe 56 inserted near its center and circulated to the gas-liquid mixing ejector 20 by the water pump 22. Is done. Thereby, the cleaning liquid ejected from the gas-liquid mixing ejector 20 is always kept clean. In addition, the fats and oils floating on the upper surfaces of the first separation tank 53 and the second separation tank 54 of the oil / water separation tank 50 can be recovered by a known method such as an oil skimmer or an oil film layer discharge path.

  Next, the carrying-out operation of the cleaning object moved to the lower side of the cleaning tank 10 will be described. The object to be cleaned that has moved to the lower side of the cleaning tank 10 through the outer peripheral opening 13 provided in the second partition 12 positioned below the swirling flow path portion 14 is washed while gently swirling. It settles in the object pool 16 at the bottom of the tank 10. The object to be cleaned that has settled flows out from the carry-out port 17 to the draining tank 60 together with the cleaning liquid by the carry-out amount adjusting throttle 17a. The carry-out amount adjusting throttle 17a adjusts to an outflow amount that is at least smaller than the inflow amount of the cleaning liquid from the gas-liquid mixing ejector 20. Further, it is desirable to adjust the amount of the object to be cleaned to the cleaning tank 10 so that the object to be cleaned does not stagnate in the object reservoir 16.

  The object to be cleaned that has flowed into the draining tank 60 is drained by a filter 61 provided at the top of the draining tank 60. Further, the cleaning liquid accumulated in the lower part of the draining tank 60 is discharged from the discharge pipe 65 and is circulated to the first separation tank 53 of the oil / water separation tank 50 via the circulation pump 66. In addition, a partition plate may be provided inside the discharge pipe 65 of the draining tank 60, and the partition plate allows the cleaning liquid containing dirt and small foreign matters to be circulated to the oil / water separation tank 50 via the circulation pump 66. Can be prevented. Moreover, you may comprise by the method of flowing naturally by the height difference of the installation position of the draining tank 60 and the oil-water separation tank 50, without providing the circulation pump 66. FIG.

  As described above, according to the first embodiment, at least two or more partitions 11, 12 are provided in the cleaning tank 10, and the covered channel portion 14 formed by the partitions 11, 12 is covered. The cleaning liquid and fine bubbles that are swirled in the swirl-shaped flow path portion 14 after directing the cleaning material are brought into direct contact with each other, and a swirling flow is generated by the flow velocity of the gas-liquid mixture ejected from the gas-liquid mixing ejector 20. Since the object to be cleaned is configured to come into intense contact, the object to be cleaned can be efficiently cleaned with a simple configuration without providing any special stirring means or acceleration means.

  Further, according to the first embodiment, since the opening is provided in the center of the first partition 11 and the gas-liquid two-layer flow is generated on the upper side of the swirling flow path portion 14, The fine bubbles adsorbing the water gather in the central portion of the cleaning tank 10 and rise, and when they reach the water surface of the cleaning tank 10, they move on the water flow toward the outer periphery of the upper end of the cleaning tank 10 and can quickly overflow. As a result, the cleaning liquid in the swirling channel portion 14 that contributes to cleaning can always be kept clean.

  Furthermore, according to the first embodiment, the opening at the center of the first partition 11 located on the upper side of the swirling flow path portion 14 is arranged on the second side located on the lower side of the swirling flow path portion 14. Since it is configured so as to be larger than the opening at the center of the partition 12, it is possible to vigorously swirl the cleaning liquid on the upper side of the swirling flow path portion 14 and to gently swirl the lower cleaning liquid, and to peel off the object to be cleaned. While promoting the rise and discharge of the oils and fats that have been performed, the object to be cleaned tends to settle.

  Further, according to the first embodiment, an opening is provided at the center of the first partition 11 and the second partition 12, and an outer periphery opening 13 is provided at the outer periphery of the second partition 12, so that the swivel shape On the upper side of the flow path portion 14, the gas bubbles containing oil and fat rise in the gas-liquid two-phase flow, and the opening of the first partition 11 rises, and the outer peripheral portion in the swirling flow path portion 14 is cleaned by centrifugal force. Since the object is configured to sink from the outer peripheral opening 13 while turning the outer peripheral part, it is possible to avoid reattachment of the oil and fat to the object to be cleaned and to effectively separate the oil and fat and the object to be cleaned. .

  Furthermore, according to the first embodiment, the oil / water separation tank 50 is divided into at least three to form the first to third separation tanks 53, 54, and 55, and the cleaning liquid flowing from the overflow tank 40 is temporarily supplied to the first. Since it is configured to be received by the separation tank 53, the stirring of the cleaning liquid generated when the cleaning liquid is received can be kept in the first separation tank 53, and the second separation tank 54 performs stable floating separation of fats and oils. Can do.

  Furthermore, according to the first embodiment, since the second separation tank 54 and the third separation tank 55 are configured to communicate with each other at the bottom of the tank, the oil and fat components float in the second separation tank 54, Since only the clean cleaning liquid located at the bottom of the two separation tanks 54 flows out to the third separation tank 55, the clean cleaning liquid can be circulated in the cleaning tank 10.

  Furthermore, according to the first embodiment, the mixing tank 30 that mixes the object to be cleaned and the cleaning liquid outside the cleaning tank 10, and the cleaning tank 10 of the cleaning object input pipe 32 that connects the mixing tank 30 and the cleaning tank 10. Since the negative pressure generating means 33 is provided in the vicinity of the side opening so that the mixture of the object to be cleaned and the cleaning liquid is sucked into the cleaning tank 10, the object to be cleaned can be cleaned without using a special charging mechanism. 10 into the swirl-shaped flow path portion 14.

  Furthermore, according to the first embodiment, the lower portion of the cleaning tank 10 is conically or pyramid-shaped, the cleaning object reservoir 16 is formed at the lower end, and the outlet 17 that protrudes from the cleaning object reservoir 16 to the outside of the cleaning tank 10 is provided. Since the carry-out amount adjusting throttle 17a for adjusting the outflow amount is provided and the mixture of the cleaning liquid and the object to be cleaned is carried out, the washing apparatus can be automatically operated with a simple configuration without providing a special carry-out mechanism. it can.

  Furthermore, according to the first embodiment, the draining tank 60 for receiving the object to be cleaned that is carried out together with the cleaning liquid is provided, and the filter 61 is disposed in the draining tank 60. The water adhering to the cleaning object can be removed.

Embodiment 2. FIG.
FIG. 6 is a cross-sectional view showing a configuration of a cleaning apparatus according to Embodiment 2 of the present invention. In the following, the same components as those of the cleaning device according to the first embodiment are denoted by the same reference numerals as those used in the first embodiment, and the description thereof is omitted or simplified.
In the cleaning apparatus according to the second embodiment, the object to be cleaned is continuously fed into the mixing tank 30 by, for example, a screw-type carry-in mechanism 70. Further, the object to be cleaned collected in the object to be cleaned reservoir 16 is continuously collected by, for example, a screw-type unloading mechanism 18.

  The carry-in mechanism 70 is provided at the top of the mixing tank 30, has a screw 72 driven by a motor 71 at the bottom, and continuously feeds objects to be cleaned introduced from the top into the mixing tank 30 by driving the screw 72. To do. By adjusting the rotational speed of the screw 72, the amount of the object to be cleaned put into the mixing tank 30 can be controlled, and the water flow rate in the swirling channel portion 14 and the ratio of the object to be cleaned can be kept optimal. The maximum cleaning capacity can be extracted. A blowing port 34 for newly blowing compressed air is provided at the bottom of the mixing tank 30. By blowing compressed air from the blowing port 34, the cleaning liquid in the mixing tank 30 and the object to be cleaned are constantly stirred, and the object to be cleaned can be quickly introduced into the object to be cleaned input pipe 32.

  The carry-out mechanism 18 is configured by providing a screw 18 b that is driven by a motor 18 a at the substantially L-shaped bottom portion of the cleaning object reservoir 16. As a result, the objects to be cleaned in the objects to be cleaned 16 can be continuously collected. Furthermore, the water flow speed in the swirl-shaped flow path portion 14 and the ratio of the object to be cleaned can be maintained optimally in conjunction with the carry-in mechanism 70 provided in the mixing tank 30.

  As described above, according to the second embodiment, since the carry-in mechanism 70 for continuously feeding the objects to be cleaned is provided in the upper part of the mixing tank 30, the objects to be cleaned to be input to the mixing tank 30 are provided. The amount can be controlled. Thereby, the water flow velocity of the swirl-shaped flow path part 14 and the ratio of the to-be-cleaned object to be thrown in can be kept optimal, and the maximum cleaning capability can be drawn out. Furthermore, an automated operation in which objects to be cleaned are continuously put into the cleaning tank 10 without human intervention is possible.

  Moreover, according to this Embodiment 2, since it comprised so that the blowing port 34 which blows in compressed air in the bottom part of the mixing tank 30 might be provided, it will be in the state by which the washing | cleaning liquid and to-be-cleaned thing in the mixing tank 30 are always stirred, The object to be cleaned can be promptly guided to the swirling flow path portion 14 of the cleaning tank 10.

  Further, according to the second embodiment, the lower part of the cleaning tank 10 is conically or pyramid-shaped, the cleaning object reservoir 16 is provided at the lower end, and the cleaning object is sent out from the cleaning object reservoir 16 to the outside. Since the unloading mechanism 18 is provided, the object to be cleaned after cleaning can be continuously collected. Further, by synchronizing with the carry-in mechanism 70 provided in the mixing tank 30, it is possible to control the input amount and the carry-out amount so that the cleaning effect is optimal.

Embodiment 3 FIG.
FIG. 7 is a cross-sectional view showing a configuration of a cleaning apparatus according to Embodiment 3 of the present invention. In the third embodiment, the draining tank 60 shown in the first and second embodiments is replaced with a draining mechanism. In the following, the same components as those of the cleaning apparatus according to the first and second embodiments are denoted by the same reference numerals as those used in the first embodiment, and the description thereof is omitted or simplified.

  The draining mechanism according to the third embodiment is disposed below the carry-out mechanism 18 and includes a conveyor 80, a water receiver 81, a water storage tank 82, a recovery box 83, and a drying blower 84. The conveyor 80 is a conveyor with a filter having a draining function. The conveyor 80 receives an object to be cleaned carried out by the carry-out mechanism 18, and drains the attached cleaning liquid while dropping the object to be cleaned to the collection box 83. The drying blower 84 is provided above the conveyor 80 and blows hot air sent from a hot air generator (not shown) on the object to be cleaned conveyed to the collection box 83 to dry the object.

  The water receiver 81 is provided below the conveyor 80, receives the cleaning liquid dripped from the object to be cleaned, and guides it to the water storage tank 82. The water storage tank 82 stores the cleaning liquid introduced from the water receiver 81 and circulates it to the first separation tank 53 of the oil / water separation tank 50 via the discharge pipe 65 and the circulation pump 66.

  As described above, according to the third embodiment, the filter-equipped conveyor 80 that drains the cleaning liquid from the object to be cleaned carried out together with the cleaning liquid, and the drying that blows hot air on the object to be cleaned on the conveyor 80. Since the blower 84 is provided, it is possible to drain and dry the object to be cleaned without requiring manual work.

Embodiment 4 FIG.
FIG. 8 is a cross-sectional view showing a configuration of a cleaning device according to Embodiment 4 of the present invention. In the fourth embodiment, a third partition 12 ′ is additionally provided in the cleaning tank 10 shown in the first embodiment. In the following, the same components as those of the cleaning device according to the first embodiment are denoted by the same reference numerals as those used in the first embodiment, and the description thereof is omitted or simplified. In addition, the configuration of the fourth embodiment can be applied in combination with the configuration shown in the other embodiments.

  A first partition 11, a second partition 12, and a third partition 12 ′ having an opening at the center are disposed in the cleaning tank 10, and the first partition 11 and the second partition 12 provide the first partition 11. 1 swirl-like channel part 14a is formed, and the second swirl-like channel part 14b is formed by the second partition 12 and the third partition 12 '. Further, the second partition 12 and the third partition 12 ′ have outer peripheral openings 13 and 13 ′ for allowing an object to be cleaned to settle below the cleaning tank 10 on the outer peripheral portion.

  Furthermore, gas-liquid mixing ejectors 20, 20 ′ that eject a gas-liquid mixture along the inner peripheral wall of the cleaning tank 10 are provided in the first swirling channel portion 14 a and the second swirling channel portion 14 b. Are attached to each. In addition, a cleaning object charging pipe 32 is inserted into the first swirl-shaped flow path part 14a located in the upper part, and a negative pressure generating means is provided in the opening part of the cleaning object charging pipe 32 located in the cleaning tank 10. 33 is provided.

  Next, the movement of the object to be cleaned and the cleaning liquid will be described. The object to be cleaned that has been input into the cleaning tank 10 from the object input pipe 32 is first cleaned while swirling in the first swirling flow path portion 14a and provided on the outer periphery of the second partition 12. It is introduced from the outer peripheral opening 13 into the second swirling channel portion 14b. The object to be cleaned introduced into the second swirl-shaped flow path portion 14b is further washed while swirling in the second swirl-shaped flow path portion 14b, and provided on the outer peripheral portion of the third partition 12 '. It sinks downward from the outer peripheral opening 13 ′ to the cleaning tank 10. In this way, the object to be cleaned swirls in the first swirling channel portion 14a and the second swirling channel portion 14b, so that the object to be cleaned is in contact with the cleaning liquid and the fine bubbles for a long time. Can be increased.

  As described above, according to the fourth embodiment, at least three or more partitions 11, 12, 12 ′ are arranged to form a plurality of swirl-shaped flow passage portions 14 a, 14 b, Since the gas-liquid mixing ejectors 20 and 20 'are provided in the flow path portions 14a and 14b to inject the mixture of fine bubbles and water, a long contact time between the cleaning liquid and the fine bubbles of the object to be cleaned is ensured. And the degree of cleaning of the object to be cleaned can be increased.

  In the fourth embodiment described above, the three partitions 11, 12, 12 ′ are provided to form the two swirling flow path portions 14a, 14b, but the number of partitions is further increased. You may comprise a multistage swirl | flux-like flow path part. In addition, the gas-liquid mixing ejectors 20 and 20 ′ are not necessarily provided in the swirling flow path portions 14 a and 14 b, for example, the gas-liquid mixing ejector 20 only in the uppermost first swirling flow path portion 14 a. In the lower second swirl-shaped flow path portion 14b, a swirl flow generated by the swirl flow in the first swirl-shaped flow path portion 14a may be used. Further, a gas-liquid mixing ejector 20 'is provided in the lowermost second swirl-shaped flow path portion 14b, and the upper first swirl-shaped flow path portion 14a swirls in the second swirl-shaped flow path portion 14b. A swirl flow generated by the flow may be used.

Embodiment 5 FIG.
FIG. 9 is a diagram showing a configuration of a cleaning device according to Embodiment 5 of the present invention. FIG. 9A is a sectional view of the cleaning device, and FIG. 9B is a perspective view of the inside of the cleaning device. In the fifth embodiment, a spiral partition 19 is additionally provided in addition to the first partition 11 and the second partition 12 of the cleaning tank 10 shown in the first embodiment. In the following, the same components as those of the cleaning device according to the first embodiment are denoted by the same reference numerals as those used in the first embodiment, and the description thereof is omitted or simplified. In addition, the configuration of the fifth embodiment can be applied in combination with the configuration shown in the other embodiments.

  The spiral partition 19 is a partition having a spiral shape disposed along the inner peripheral wall of the cleaning tank 10, and is configured such that a central portion is opened when the spiral partition 19 is disposed. A first partition 11 and a second partition 12 are provided at the upper and lower portions of the spiral partition 19. An outer peripheral opening 13 is formed in the outer peripheral portion of the second partition 12. The gas-liquid mixing ejector 20 and the cleaning object introducing pipe 32 are inserted into a space formed between the first partition 11 and the uppermost part of the spiral partition 19.

  Next, the movement of the object to be cleaned and the cleaning liquid will be described. The cleaning liquid and fine bubbles are ejected from the gas-liquid mixing ejector 20, and the object to be cleaned is input into the cleaning tank 10 from the object input pipe 32. The thrown object to be cleaned moves from the top to the bottom of the spiral flow path of the spiral partition 19, and is cleaned while coming into contact with the cleaning liquid and fine bubbles during this movement. When the object to be cleaned moves and moves to the second partition 12 portion, it settles from the outer peripheral opening 13 to the lower part of the cleaning tank 10.

  As described above, according to the fifth embodiment, since the spiral partition 19 is provided between the first partition 11 and the second partition 12, the cleaning liquid and fine bubbles of the object to be cleaned A long contact time can be ensured, and the degree of cleaning of the object to be cleaned can be increased.

Embodiment 6 FIG.
FIG. 10 is a cross-sectional view showing a configuration of a cleaning device according to Embodiment 6 of the present invention. In the sixth embodiment, a crusher 90 is additionally provided in the cleaning device shown in the second embodiment. Hereinafter, the same parts as those of the cleaning device according to the second embodiment are denoted by the same reference numerals as those used in the second embodiment, and the description thereof is omitted or simplified. In addition, the configuration of the sixth embodiment can be applied in combination with the configuration shown in the other embodiments. In the following, an example that is optimal for cleaning using mainly metal cutting scraps having various shapes as an object to be cleaned will be described, but also for cleaning other objects to be cleaned in combination with the configuration shown in the other embodiments. Can be applied.

  The pulverizing apparatus 90 is a general pulverizing apparatus for pulverizing cutting scraps of various shapes into sizes suitable for cleaning with the cleaning apparatus. The article to be cleaned pulverized by the pulverizing apparatus 90 is received by a charging hopper 91 provided below. Under the charging hopper 91, for example, a screw-type charging mechanism 92 provided so as to penetrate the swirling flow path portion 14 of the cleaning tank 10 is disposed. The object to be cleaned, which has been pulverized by using the charging mechanism 92, is continuously and directly fed into the swirl-shaped channel portion 14.

  In this configuration, an object to be cleaned such as cutting scraps pulverized to an appropriate size by the pulverizer 90 is continuously and directly fed into the swirling flow path portion 14 by the charging mechanism 92 and cleaned. The object to be cleaned is cleaned in the swirling flow path part 14 and separated from the fine bubbles containing oil and fat from the object reservoir 16 provided at the bottom of the cleaning tank 10 by, for example, a discharge tank 18 by a screw 18b. 10 to the outside.

  As described above, according to the sixth embodiment, an object to be cleaned such as cutting waste provided by penetrating the input mechanism 92 at the position of the swirling flow path portion 14 of the cleaning tank 10 and pulverized by the pulverizer 90. Is directly fed into the swirl-shaped flow path section 14, so that it can cope with a cleaning process of not only powdered cutting waste but also various types of cutting waste, and continuously recovers the cutting waste after cleaning. As a result, unmanned automatic operation of the cleaning device becomes possible.

  In the sixth embodiment, the structure for draining the object to be washed after being carried out, the structure for performing drying, or the structure of the swirl-shaped flow path section are similarly applied by the methods described in the other embodiments. It can be implemented.

  DESCRIPTION OF SYMBOLS 10 Washing tank, 11 1st partition, 12 2nd partition, 12 '3rd partition, 13, 13' Outer periphery opening part, 14 Swirling flow path part, 14a 1st swirling flow path part, 14b 2nd swirling flow path part, 15 fine mesh member, 16 to-be-cleaned object reservoir, 17 carry-out port, 17a carry-out amount adjustment throttle, 18 carry-out mechanism, 18a motor, 18b screw, 19 spiral partition, 20, 20 ′ Gas-liquid mixing ejector (cleaning means), 21 Compressed water introduction pipe, 22 Water pump, 23 Compressed air introduction pipe, 24 Air pump, 25 Clogging detector, 26 Check valve, 30 Mixing tank, 31 Mixing tank communication pipe, 32 To-be-washed object input pipe (object to be cleaned input means), 33, 33a, 33b Negative pressure generating means, 34 Blowing port, 40 Overflow tank, 41 Liquid feed pipe, 50 Oil / water separation tank (oil / water separation hand) ), 51 first partition plate, 52 second partition plate, 53 first separation tank, 54 second separation tank, 55 third separation tank, 56 discharge pipe, 57 horizontal partition plate, 60 draining tank, 61 Filter, 62 Vibration application unit, 63 Rinsing water supply unit, 64 Drying blower, 65 Discharge pipe, 66 Circulation pump, 70 Carrying mechanism, 71 Motor, 72 Screw, 80 Conveyor, 81 Water receiver, 82 Water tank, 83 Collection box, 84 Drying blower, 90 pulverizer, 91 charging hopper, 92 charging mechanism, A swirling flow.

Claims (9)

A cleaning tank having a swirling channel portion formed by a partition member;
A cleaning means for generating a flow by mixing fine bubbles and a cleaning liquid in the swirl-shaped flow path section, and for washing an object to be cleaned in the swirl-shaped flow path;
An oil / water separation means for separating oil and fats and foreign matters from the washing liquid after washing ;
A mixing tank for mixing the object to be cleaned and the cleaning liquid;
The mixing tank has an object charging means communicating with an upper side of the swirling flow path portion in the cleaning tank, and the object charging means penetrates the swirl flow path section and passes through the swirling flow path section. Form a workpiece input port on the inner wall of the cleaning tank,
The cleaning tank has a negative pressure generating means on the inner peripheral wall in the vicinity of the workpiece input port,
A cleaning apparatus, wherein the mixture of the object to be cleaned and the cleaning liquid is sucked into the cleaning tank by the negative pressure generated by the negative pressure generating means.   The cleaning means is a gas-liquid mixing ejector that penetrates from the outside of the cleaning tank to the swirling flow passage portion in the cleaning tank and ejects a mixture of fine bubbles and cleaning liquid along the inner periphery of the cleaning tank. The cleaning apparatus according to claim 1. The oil / water separation means comprises an oil / water separation tank and at least three or more partition plates that divide the oil / water separation tank,
The oil / water separation tank includes a first separation tank that contains the cleaning liquid overflowed from the washing tank, a second separation tank that communicates with the first separation tank at the upper part, and the second separation tank and the lower part. Partitioned into a third separation tank that communicates,
The cleaning apparatus according to claim 1, wherein the cleaning liquid in the third separation tank is circulated to the cleaning means.   The swirling channel portion is formed by at least two or more partition members having an opening in the center, and the area of the opening of the partition member located above the swirling channel portion is the swirling shape. The cleaning apparatus according to claim 1, wherein the cleaning device is larger than an area of the opening of the partition member positioned below the flow path. The swirling channel portion is formed by at least two or more partition members having an opening at the center,
2. The cleaning apparatus according to claim 1, wherein the partition member located below the swirl-shaped flow path portion has an outer peripheral opening through which an object to be cleaned passes on the outer peripheral portion. A plurality of swirling flow path portions are formed by at least three or more partition members having an opening at the center,
The cleaning apparatus according to claim 1, wherein the cleaning means is disposed in each of the plurality of swirl-shaped flow path portions.   The swirling flow path portion is formed by first and second partition members, and a spiral partition member disposed between the first partition member and the second partition member and forming an opening in the center. The cleaning apparatus according to claim 1. Negative pressure generating means is a covering of streamlined shape which is formed on the inner peripheral wall of the cleaning tank cleaning object inlet vicinity, washed according to claim 1, wherein the downstream side of the swirling flow, characterized in that the open apparatus. The negative pressure generating means is a recess formed in the inner peripheral wall of the cleaning tank in the vicinity of the workpiece inlet, and the swirling flow velocity is locally reduced when the swirling flow passes through the recess. Item 2. A cleaning apparatus according to Item 1 .

Images