JP5061053B2 - Dry cleaning apparatus, dry cleaning method, cleaning product cleaned by the dry cleaning apparatus, and method of manufacturing the regenerator - Google Patents

Description

  The present invention, for example, dust or foreign matter adhering to or fixed to various cleaning objects such as relatively complex parts to which toner used in an electrophotographic image forming apparatus such as a copying machine or a laser printer is attached, The present invention relates to a dry cleaning apparatus and a cleaning method that are removed by using a solid cleaning medium, and a manufacturing method of a cleaning object and a regenerator that are cleaned thereby, and more particularly, to efficiently cleaning a substantially planar object to be cleaned.

  Office equipment manufacturers such as copiers, facsimiles, and printers disassemble, clean, and reassemble used products and various units from users to realize a resource recycling society, and reuse them as parts. Recycling activities are actively carried out. In order to reuse the parts used in these products and various units, it is necessary to remove and clean the disassembled parts and toner that is fine particle powder adhering to the units. Reducing the cost and environmental burden required for cleaning is a major issue.

  For example, Patent Document 1 discloses a wet cleaning apparatus that uses water or a solvent to remove dirt such as toner adhering to the parts and units. The cleaning apparatus disclosed in Patent Document 1 fixes an object to be cleaned inside a cleaning rod having a large opening, and the belt is conveyed along a moving path along which a cleaning agent such as cleaning spray water is sprayed on the cleaning rod. The cleaning material is transported by transporting means such as, and the flow of the cleaning agent sprayed on or from the side of the cleaning rod in the moving path passes through the opening and the mesh of the cleaning rod and collides with the cleaning target to clean the cleaning target. Yes. Then, the object to be cleaned is continuously cleaned by continuously feeding the cleaning rod with the object to be cleaned to the conveying means.

  If such a wet cleaning device is used to clean toner or other parts or units that are contaminated with toner, the energy consumption and environmental burden in the treatment of waste liquid containing toner, etc. and the drying process after washing are large, resulting in high costs. There is a problem that.

  In addition, when using a dry cleaning method by air blow, cleaning capability is not sufficient for toners with strong adhesion, and post-processing such as manual wiping is necessary. This is one of the bottleneck processes.

  In order to solve these problems, the dry cleaning apparatus disclosed in Patent Document 1 causes a high-speed air flow to flow in a cleaning tank and causes a cleaning medium made of a lightweight and easy-to-fly solid to fly at high speed in the cleaning tank. The cleaning medium is continuously brought into contact with the object to be cleaned to separate dust and powder adhering to the object to be cleaned. In particular, by using a flaky cleaning medium having flexibility, a cleaning ability equivalent to or higher than that of ultrasonic cleaning can be exhibited with a small amount of the cleaning medium used.

  However, in the method in which the cleaning object is introduced into the cleaning tank and the cleaning medium collides, a cleaning tank volume larger than the size of the cleaning object is required, and a larger cleaning tank is required when the cleaning object becomes large. . Further, when the cleaning tank is increased in size, it is necessary to use a larger amount of cleaning medium, and the airflow in the cleaning tank is weakened and the cleaning medium is likely to stay.

  Also, devices that clean a large area using a solid cleaning medium are disclosed in Patent Document 2, Patent Document 3, Patent Document 4, and the like. In the cleaning apparatus disclosed in Patent Document 2, a flying object made of a sponge or a hollow rubber sphere having a diameter of about 10 mm to 30 mm is caused to fly by using compressed air in a cone-shaped casing. The cleaning is performed by colliding with the spot area. However, in this cleaning method, since the inside of the casing becomes a positive pressure, it is difficult to prevent leakage of a small and flexible flying object. There is also a problem that the removed deposits are scattered around.

The cleaning devices shown in Patent Document 3 and Patent Document 4 attach a net to an opening where a flying body of an annular circuit that travels a flying body made of a sponge or a hollow rubber sphere contacts the object to be cleaned. Thus, the object to be cleaned is cleaned while circulating the flying object. However, it is difficult to prevent leakage when the flexible flying body is small, and there is a disadvantage that sufficient cleaning ability cannot be obtained when the mesh of the net is made fine to prevent leakage.
JP 2007-29945 A Utility Model Registration No. 2515833 JP-A-4-83567 JP 7-88446 A

  In order to prevent leakage of the cleaning medium and the removed dirt, it is conceivable to suck the inside of the cleaning tank with a negative pressure. However, when the inside of the washing tank is maintained at a negative pressure and is in close contact with the object to be washed, when washing the washing tank while moving along the object to be washed while washing, the washing tank is difficult to move and the working time is reduced. There is a problem that the efficiency of the cleaning operation cannot be improved.

  Further, a method is also conceivable in which a predetermined amount of gap is maintained without being in close contact with the object to be cleaned, and an inflow air flow is generated by sucking (pushing back) the cleaning medium by an internal negative pressure to prevent leakage from the gap. . However, as a side effect of the push-back airflow, there are cases where the circulating airflow in the cleaning tank is disturbed and the staying place of the cleaning medium is generated in the cleaning tank, or the airflow toward the object to be cleaned is weakened. In addition, it has been clarified that there is a case where the amount of the cleaning medium in the cleaning tank may not be maintained because leakage of the cleaning medium cannot be completely prevented only by the pushing-back airflow.

  In the dry cleaning method, the number of collisions and the collision speed of the cleaning medium have a great influence on the cleaning performance. Therefore, the cleaning medium is prevented from staying and leaking outside the cleaning tank, and the amount of cleaning medium flying in the cleaning tank It is necessary to increase the cleaning efficiency and to maintain a higher air flow rate toward the object to be cleaned.

  The present invention satisfies such demands, reliably prevents leakage and retention of the cleaning medium, effectively utilizes the energy of the airflow, and exhibits a high cleaning capability and a dry cleaning method and It is an object of the present invention to provide a method for producing a washed product and a recycling apparatus.

  The dry cleaning apparatus of the present invention is a dry cleaning apparatus for cleaning by causing a cleaning medium flowing by an air current to collide with an object to be cleaned, and having a cleaning tank body having an opening on one side and an opening of the cleaning tank body A cleaning tank outer edge disposed with a predetermined gap with respect to the object to be cleaned, and a part of the wall surface of the cleaning tank body, allowing gas and dust to pass through, but allowing the cleaning medium to pass through. A cleaning tank having a cleaning medium separation means having no opening, a cleaning medium acceleration means for accelerating the cleaning medium by jetting a high-speed air flow in the direction of the opening of the cleaning tank body, and the cleaning through the cleaning medium separation means A suction means for sucking air in the tank body and transporting the sucked air and dust to the outside of the cleaning tank; and provided in the vicinity of the cleaning tank outer edge of the opening of the cleaning tank body, and the object to be cleaned And the outer edge of the washing tank The airflow flowing into the gap through the cleaning tank main body, characterized in that a separating means for forming a bypass passage for flowing into the cleaning tank body without passing through the opening.

  The separating means is configured to cause an airflow flowing into the cleaning tank body from the bypass channel to flow along an inner wall of the cleaning tank body.

  Further, the separating means causes the airflow flowing into the cleaning tank main body from the bypass flow path to flow in so as to merge with the airflow circulated in the cleaning tank main body from the cleaning medium acceleration means. And

  Further, the cleaning medium accelerating means protrudes from the inner wall surface of the cleaning tank body.

  Further, the separation means has a seal member that is in sliding contact with the object to be cleaned.

  The dry cleaning apparatus includes a cleaning object holding unit that holds the cleaning object, and the cleaning object holding unit includes a second seal member that is in sliding contact with the outer edge of the cleaning tank. It is characterized by.

  Further, the outer edge of the cleaning tank has a seal member that is in sliding contact with the object to be cleaned.

  In addition, the driving device includes a driving unit that opens and closes the bypass flow path so that the separation unit contacts and separates from the cleaning target, and the driving unit opens the bypass flow channel when the separation unit is separated from the cleaning target. It is characterized by closing. Furthermore, it is preferable to provide a cleaning medium detection means in the bypass flow path.

  The dry cleaning method of the present invention is a dry cleaning method for causing a cleaning medium flowing by an air current to collide with an object to be cleaned and cleaning the outer edge of the cleaning tank disposed with a predetermined gap with respect to the object to be cleaned. The cleaning tank body is provided in a state where the dust sucked through the cleaning medium separating means having an opening through which the cleaning medium cannot pass through is conveyed to the outside of the cleaning tank. When cleaning the object to be cleaned by jetting a high-speed airflow in the direction of the opening, bypass the airflow flowing into the cleaning tank body through the gap between the object to be cleaned and the outer edge of the cleaning tank without passing through the opening. It is made to flow in a washing tank main body through a flow path.

  An airflow flowing into the cleaning tank main body from the bypass channel is caused to flow along the inner wall of the cleaning tank main body.

  In addition, the airflow flowing into the cleaning tank main body from the bypass flow path is caused to flow so as to be merged with the airflow that is ejected to the cleaning tank main body and circulates in the cleaning tank main body.

  The washed product of the present invention is washed by the dry washing method.

  The method for manufacturing a regenerator according to the present invention is characterized in that, by the dry cleaning method, the parts of the apparatus that have been used and recovered and disassembled are cleaned, and the cleaned parts are reassembled to restore the apparatus.

  The present invention accelerates the cleaning medium by sucking the air in the cleaning tank body and ejecting a high-speed air flow in the direction of the opening of the cleaning tank body while conveying the air and dust in the cleaning tank body to the outside. When cleaning an object to be cleaned, an airflow flowing into the cleaning tank body through the gap between the cleaning object and the outer edge of the cleaning tank is allowed to flow into the cleaning tank body through the bypass channel without passing through the opening. Thus, it is possible to prevent the airflow that causes the cleaning medium from being disturbed or weakened by the airflow flowing through the gap between the object to be cleaned and the outer edge of the cleaning tank, and to improve and stabilize the cleaning performance.

  In addition, the flow of air flowing into the cleaning tank from the bypass channel can be made to flow along the inner wall of the cleaning tank body, whereby the circulating air flow along the inner wall of the cleaning tank body can be strengthened, and the inner wall of the cleaning tank body can be cleaned. The retention of the medium can be prevented, and the cleaning capability can be enhanced by effectively using the cleaning medium.

  Furthermore, the air flow that flows into the cleaning tank main body from the bypass channel is injected into the cleaning tank main body so as to join the air flow circulating in the cleaning tank main body, thereby strengthening the air flow that accelerates the cleaning medium to fly. More cleaning media can be accelerated and fly at higher speed, and the cleaning ability can be improved.

  In addition, the cleaning medium acceleration means for ejecting a high-speed air flow to the cleaning tank main body projects from the inner wall surface of the cleaning tank main body, so that the loop-shaped circulating air flow generated in the cleaning tank main body is ejected from the cleaning medium acceleration means. The airflow can be merged with the airflow, and the jetted high-speed airflow can be further strengthened to obtain a higher cleaning ability.

  In addition, since the separating means that forms the bypass flow path has the seal member that is in sliding contact with the object to be cleaned, the cleaning medium that leaks from the gap between the opening of the cleaning tank body and the object to be cleaned can be blocked. Further, the cleaning medium leaked without being blocked by the seal member can be carried back by the airflow flowing through the bypass channel and returned into the cleaning tank body, and the cleaning medium can be effectively used.

  In addition, a second seal member that slides against the outer edge of the cleaning tank is provided on the cleaning object holding means that holds the object to be cleaned of the dry cleaning apparatus, or a seal that slides on the outer edge of the cleaning tank against the object to be cleaned. By providing the member, it is possible to prevent the cleaning medium leaking into the gap between the cleaning object and the outer edge of the cleaning tank from leaking to the outside and return it to the cleaning tank body through the bypass flow path. The amount can be kept stable and a high cleaning ability can be maintained.

  In addition, the separation means is cleaned by closing the bypass flow path when the separation means is separated from the cleaning object by providing the drive means for opening and closing the bypass flow path by contacting and separating the separation means from the cleaning target. The cleaning medium that has flowed out of the flow path formed away from the object can be stored in the bypass flow path, and the amount of the cleaning medium that circulates and circulates in the main body of the cleaning tank is reduced, so that the cleaning medium that adheres to the cleaning object is removed. It can be removed efficiently.

  By detecting the amount of the cleaning medium accumulated in the bypass flow path when the bypass flow path is closed, it is possible to detect that the cleaning medium is discharged due to consumption and less than a predetermined amount, and there is insufficient cleaning medium. It is possible to prevent a decrease in cleaning ability due to the above and maintain a high cleaning ability.

  Moreover, the washing | cleaning material wash | cleaned with the washing | cleaning method of this invention is wash | cleaned reliably, and can be reused stably.

  Furthermore, a stable regeneration apparatus can be obtained by cleaning the parts of the apparatus that has been used, recovered and disassembled by the cleaning method of the present invention, and reassembling the cleaned parts to restore the apparatus.

1 and 2 show the configuration of a dry cleaning apparatus according to the present invention. FIG. 1 is a perspective view, FIG. 2 (a) is a front sectional view, and (b) is a side view. The dry cleaning apparatus 1 has a cleaning tank unit 2 and a cleaning object holding means 3, and as shown in the partially enlarged sectional view of FIG. 3, the dust attached to the cleaning object 4 held by the cleaning object holding means 3 Dirt and the like are removed by the cleaning medium 5 flying with a high-speed air stream without using a liquid such as water or a solvent.

  A cleaning medium 5 used in the dry cleaning apparatus 1 is made of a material such as metal, ceramics, synthetic resin, sponge, cloth, and the like, and is formed from a solid in the form of particles, rods, cylinders, fibers, or flakes. As a flaky solid, for example, it consists of a resin film piece, cloth piece, paper piece, metal piece with an area of 1-1000 mm2 and a thickness of 1-500 μm, rectangular, circular, elliptical, triangular, polygonal, and other irregular shapes And flexible. The material, size, and thickness of the cleaning medium 5 may be appropriately selected according to the characteristics such as the shape and material of the cleaning object 4 and the adhesion strength of the adhered substance that adheres to the cleaning object 4. For example, if the cleaning object 4 is easily damaged, if a soft material such as a resin film and a thin material is used, the thin object flexes flexibly so that the cleaning object 4 is not damaged. Moreover, when the deposit | attachment adhering to the washing | cleaning target object 4 needs strong removal power like a coating film etc., a strong removal effect | action can be acquired if a metal flake etc. are used. Further, even when the surface to be cleaned 4 has an uneven portion on the surface to be cleaned, it can be cleaned by appropriately selecting the size of the cleaning medium 5.

  In this way, when the lamellar cleaning medium 5 is used, when the collision with the object 4 to be cleaned from the end portion, the contact force concentrates on the edge of the cleaning medium 5, so that the adhering matter can be removed even though the mass is small. The necessary power can be obtained. Further, since the force is released by bending when the contact force with respect to the object 4 to be cleaned is increased, an excessive force may be applied to the object 4 to be cleaned, unlike a general blast shot material or an abrasive for barrel processing. There is no need to damage the object 4 to be cleaned. Further, when the flaky cleaning medium 5 collides with the object 4 to be cleaned, the viscous resistance received from the air acts greatly and becomes an inelastic collision, so that it does not easily rebound. In particular, in the case of an oblique collision, it moves while contacting the wide area of the object 5 to be cleaned in a single collision, so that a more excellent cleaning effect can be exhibited.

  The cleaning tank unit 2 includes a cleaning tank 6, a cleaning medium acceleration unit 7, a suction unit 8, and a separation unit 9. The cleaning tank 6 includes a cleaning tank main body 10, a cleaning tank outer edge portion 11, and a cleaning medium separating unit 12. The cleaning tank main body 10 is formed in a pyramid shape or a semi-cylindrical shape having an opening in the upper part, has an opening 13 on both wall surfaces sandwiching the upper opening, and has a nozzle fixing part 14 in the bottom. The nozzle fixing portion 14 is formed in a pyramid shape with a protruding central portion, and both surfaces from the central portion to the openings 13 on both wall surfaces are formed with smooth curved surfaces. The cleaning tank outer edge portion 11 has an upper opening of the cleaning tank main body 10 at the center, and guide members 15 that guide the movement of the cleaning object holding means 3 by holding a gap with the cleaning object holding means 3 on both side walls. Have The cleaning medium separating means 12 is made of, for example, a porous member such as a wire net, a plastic net, a mesh, a punch metal, or a slit plate, and the inner surface of the cleaning tank main body 10 is formed in openings 13 provided on both wall surfaces of the cleaning tank main body 10. The attached matter removed from the cleaning medium 5 and the cleaning object 4 is separated.

  The cleaning medium accelerating means 7 includes a cleaning medium accelerating nozzle 16 having a plurality of ejection ports and a compressed air supply device 17 made of, for example, a compressor. The cleaning medium accelerating nozzle 16 is fixed to the nozzle fixing portion 14 with a plurality of ejection openings arranged in a straight line along the center of the bottom of the cleaning tank body 10. The cleaning medium accelerating nozzle 16 is supplied with compressed air from the compressed air supply device 17 through an air supply pipe 19 having a control valve 18 and sprayed into the cleaning tank body 10 to cause the cleaning medium 5 to fly at high speed. Instead of compressed air supplied to the cleaning medium acceleration nozzle 16, an inert gas such as nitrogen gas or argon gas may be supplied.

  The suction means 8 has a suction hood 20 and a suction device 21. The suction hood 20 is formed in, for example, a semi-cylindrical shape, covers the openings 13 on both wall surfaces of the cleaning tank body 10, and forms a suction duct 22 between the cleaning medium separating means 12. The suction device 21 sucks air in the cleaning tank main body 10 through a suction pipe 23 connected to the suction hood 20, and removes air, dust and the like sucked into the suction duct 22 through the cleaning medium separating means 12. Transport outside.

  The separating means 9 has two sets of partition members 24 and a first seal member 25. The partition member 24 is formed in, for example, a triangular prism shape having a vertex at the lower portion, and is provided to protrude into the cleaning tank body 10 at a predetermined interval from both ends of the upper opening of the cleaning tank body 10. The first seal member 25 is composed of, for example, a brush seal in which a large number of bristles are dense, and is placed on the upper portion of the partition wall member 24 so as to press the tip portion against the cleaning surface of the cleaning object 4 held by the cleaning object holding means 3. Is provided. The two sets of partition members 24 and the first seal member 25 dam the airflow and the cleaning medium 5 flowing along the cleaning target object 4 held by the cleaning target object holding means 3, and the cleaning medium 5 is cleaned by the cleaning tank body 10. Confine inside. Further, the airflow flowing into the cleaning tank main body 10 along the object to be cleaned 4 is blocked, and a bypass flow path 26 is formed between the cleaning tank main body 10 and the side wall.

  The cleaning object holding means 3 has a cleaning object holding part 27 for holding the substantially flat cleaning object 4 at the substantially central part, and the cleaning object holding part 27 is a lower surface of the cleaning object 4. The cleaning target object 4 is held so that the target surface is substantially flush with the lower surface of the cleaning target object holding means 3 and moves along the outer edge 11 of the cleaning tank. The cleaning object holding means 3 has second seal members 28 on both sides in the moving direction separated from the cleaning object holding part 27 by a predetermined distance. Since the second seal member 28 moves while being in sliding contact with the outer edge 11 of the cleaning tank, it is desirable to use a brush-like seal in terms of ensuring air permeability and reducing friction with the outer edge 11 of the cleaning tank. Alternatively, a sealing member made of sponge, rubber, or resin film may be used. The relative movement means for moving the cleaning object holding means 3 is detachably attached to drive means such as a translation actuator (not shown) such as a linear motor, an air cylinder, or a wire drive means. It moves along the cleaning tank outer edge portion 11 in parallel with the operation of the cleaning tank unit 2 by the control signal.

  An operation of removing powder, dust, and the like attached to the cleaning object 4 with the dry cleaning apparatus 1 will be described.

  First, an appropriate amount of the cleaning medium 5 is put into the cleaning tank body 10, the cleaning target object 4 is held by the cleaning target object holding means 3, and the cleaning target surface of the cleaning target object 4 is set to the cleaning tank unit 2 side. The holding means 3 is placed on the cleaning tank unit 2 and connected to a driving means (not shown), and the cleaning object 4 is moved onto the cleaning tank body 10 as shown in FIG. When a control device (not shown) is operated in this state, the control device first drives the suction device 21 to suck the air in the cleaning tank body 10 to make it a negative pressure. Due to the suction of the air in the cleaning tank body 10, a differential pressure with the outside air is generated, the gap 29 between the cleaning tank outer edge portion 11 and the cleaning object holding means 3 becomes a flow path, and the air flow toward the cleaning tank body 10 is generated. appear. This airflow causes the outside air to flow into the cleaning tank body 10 through the second seal member 28 and the bypass flow path 26.

  In this state, the compressed air supply device 17 is driven to open the control valve 18 to supply compressed air to the cleaning medium acceleration nozzle 16 to generate a high-speed air flow in the vertical upward direction from the cleaning medium acceleration nozzle 16 into the cleaning tank body 10. Let As shown in FIG. 3, the high-speed airflow collides with the cleaning object 4, then flows along the cleaning object 4 and the cleaning object holding unit 3, and is further directed by the first seal member 25 and the partition wall member 24. Is bent, flows along the inner wall of the cleaning tank body 10, returns to the cleaning medium acceleration nozzle 16 again, and a loop-shaped circulating airflow A is generated in the cleaning tank body 10. When the circulating airflow A of the loop is generated, the nozzle fixing portion 14 protrudes from the bottom portion of the cleaning tank body 10 and the side surface is formed with a smooth curved surface, and the cleaning medium acceleration nozzle 16 is ejected to the tip portion of the nozzle fixing portion 14. Since the opening is provided, the loop-shaped circulating airflow A generated in the cleaning tank main body 10 flows along the smooth curved surface of the nozzle fixing portion 14, the ejection direction of the cleaning medium acceleration nozzle 16 and the flow of the circulating airflow A. The directions can be matched. Therefore, the airflow ejected from the cleaning medium acceleration nozzle 16 is not disturbed or weakened by the loop-shaped circulating airflow A generated in the cleaning tank body 10, and the airflow ejected from the cleaning medium acceleration nozzle 16 is further reduced. The cleaning medium 5 can be made to fly efficiently.

  The cleaning medium 5 flies at a high speed by this high-speed air flow, collides with the cleaning object 4, and efficiently removes dirt, dust and the like adhering to the surface of the cleaning object 4. The cleaning medium 5 that has collided with the object to be cleaned 4 falls due to the flow of the loop-shaped circulating airflow A and gravity, and slides down in the vicinity of the cleaning medium acceleration nozzle 16 while being sucked on the cleaning medium separating means 12. At the same time, dirt or the like attached to the cleaning medium 5 is separated and sucked. The dirt dust and the like separated by the cleaning medium separating means 12 is collected by the suction device 21 through the intake duct 22 and the suction pipe 23. Further, the dropped cleaning medium 5 is again sent to the vicinity of the ejection port of the cleaning medium acceleration nozzle 16 by the loop-shaped circulating air flow A, and flies vertically upward by the high-speed air current ejected by the cleaning medium acceleration nozzle 16. By repeating this operation, dirt, dust and the like on the surface of the cleaning object 4 are removed.

  When the cleaning object 4 is cleaned by the flying cleaning medium 5, the gap 29 between the cleaning tank outer edge portion 11 and the cleaning object holding means 3 becomes a flow path, and an air flow toward the cleaning tank body 10 is generated. To do. This airflow causes the outside air to flow into the cleaning tank body 10 through the second seal member 28 and the bypass flow path 26. This inflow airflow B merges with the airflow flowing along the cleaning medium separation means 12 of the loop-shaped circulation airflow A that circulates in the cleaning tank body 10 through the bypass flow path 26. Accordingly, the cleaning medium 5 stays in the cleaning tank main body 10 because the air flow B entering from the gap 29 weakens the high-speed air flow ejected from the cleaning medium acceleration nozzle 16 or disturbs the loop-shaped circulating air flow A circulating in the cleaning tank main body 10. It is possible to prevent the cleaning medium 5 from entering the gap 29 from being pushed back and discharged from the cleaning tank 6. Further, even if the cleaning medium 5 slightly enters the gap 29, the flying speed of the cleaning medium 5 is attenuated by the airflow B flowing into the gap 29. Therefore, the cleaning medium 5 is decelerated without leaking outside the apparatus, and finally the first 2 is blocked by the second sealing member 28 and falls onto the outer edge 11 of the cleaning tank. Further, the air flow B flowing into the cleaning tank main body 10 through the bypass channel 26 joins the air flow flowing along the cleaning medium separating means 12 of the loop-shaped circulating air flow A circulating in the cleaning tank main body 10 and loops. The circular circulating airflow A can be further strengthened, and the cleaning ability can be enhanced.

  When cleaning the cleaning object 4 by causing the cleaning medium 5 to fly by the cleaning medium acceleration nozzle 16, the control valve 18 is intermittently driven to hold the cleaning object while repeatedly ejecting and stopping the high-speed air current from the cleaning medium acceleration nozzle 16. The means 3 is reciprocated back and forth along the cleaning tank outer edge 11 of the cleaning tank unit 2 to the front and rear of the cleaning tank body 10 to clean the entire surface of the cleaning object 4. When the cleaning object holding means 3 is reciprocated, the cleaning medium 5 that has entered the gap 29 between the cleaning object holding means 3 and the cleaning tank outer edge part 11 or the cleaning medium 5 that has dropped onto the cleaning tank outer edge part 11 is The two sealing members 28 can be collected in the cleaning tank body 10. Therefore, the cleaning medium 5 can be used effectively, and a small amount of the cleaning medium 5 can be used for efficient cleaning. After the cleaning object holding means 3 is reciprocated at least once, if necessary, several times, the controller stops driving the compressed air supply device 17 and the suction device 21 to complete a series of cleaning operations. Instead of reciprocating the cleaning object holding means 3, the cleaning object holding means 3 may be fixed and the cleaning tank unit 2 may be reciprocated.

  In the above description, the case where the separating means 9 having the partition member 24 and the first seal member 25 is fixed so that the front end portion of the first seal member 25 is in contact with the cleaning object holding means 3 and the cleaning object 4 will be described. However, as shown in the partial cross-sectional view of FIG. 4A, an elastic seal member moving means 30 such as a bellows is provided between the partition wall member 24 and the first seal member 25, and the bypass flow passage 26 is provided. May be provided with a bypass flow path opening / closing valve 31.

  In this case, during the cleaning of the cleaning object 4, the tip of the first seal member 25 is brought into contact with the cleaning object holding means 3 and the cleaning object 4, the bypass channel opening / closing valve 31 is opened, and the cleaning tank Before the cleaning object 4 is taken out after generating the loop-shaped circulating airflow A in the main body 10 and the cleaning object 4 is taken out, as shown in FIG. By driving, the first seal member 25 is separated from the cleaning object holding means 3 and the cleaning object 4 to form the flow path 32, and the bypass flow path opening / closing valve 31 closes the bypass flow path 26. When the bypass flow path 26 is closed and the flow path 32 is formed between the cleaning object holding means 3 or the cleaning object 4 and the first seal member 25 in this way, the circulating airflow circulating in the cleaning tank body 10 is obtained. A part of the cleaning medium 5 flows into the flow path 32, and a part of the cleaning medium 5 flows into the cleaning object holding means 3 and the gap 29 between the cleaning target object 4 and the cleaning tank outer edge 11 by the flowing air and flows in from the outside. Is stopped by decelerating by the airflow B. When the cleaning object holding means 3 is reciprocated in this state, the cleaning medium 5 that has flowed into the gap 29 is swept back by the second seal member 28 and enters the bypass channel 26, and is bypassed by the bypass channel opening / closing valve 31. 26. By repeating this operation for a predetermined time, it is possible to reduce the cleaning medium 5 flying to the cleaning tank body 10 and to blow away the cleaning medium 5 attached to the cleaning object 4 and remove it. After this operation is repeated for a predetermined time, the driving of the compressed air supply device 17 and the suction device 21 is stopped to complete a series of cleaning operations. Thereafter, the cleaning object holding means 3 is removed from the cleaning tank unit 2 and the cleaning operation of the next cleaning object 4 is started. When the cleaning medium holding means 2 holding the next cleaning object 4 is set in the cleaning tank unit 2, as shown in FIG. 4A, the tip of the first seal member 25 is moved to the cleaning object holding means 3 or The object to be cleaned 4 is brought into contact, and the bypass channel opening / closing valve 31 is opened to start cleaning of the object to be cleaned 4.

  The bypass flow path 26 may be provided with a cleaning medium detection means for detecting the amount of the cleaning medium 5 deposited. As the cleaning medium detection means, known detection means such as a mechanical type, an optical type, and a capacitance type can be used according to the material of the cleaning medium 5. In this case, by detecting the amount of the cleaning medium 5 that has accumulated in the bypass flow path 26 when the bypass flow path opening / closing valve 31 is closed, the cleaning medium 5 is discharged due to wear and is less than a predetermined amount. Therefore, it is possible to prevent a decrease in cleaning ability due to an insufficient amount of the cleaning medium 5, and it is possible to maintain a high cleaning ability.

  Further, instead of providing the seal member moving means 30 and the bypass flow path opening / closing valve 31, as shown in the partial sectional views of FIGS. 5 (a) and 5 (b), the separation member having the partition wall member 24 and the first seal member 25 is provided. A driving mechanism for rotating or moving the means 9 is provided, and the separation means 9 is rotated or moved by the driving mechanism to provide the flow path 32 between the cleaning object holding means 3 or the cleaning object 4 and the first seal member 25. At the same time, the bypass channel 26 may be closed.

  The dry cleaning apparatus 1 has been described with respect to the case where the substantially flat cleaning target 4 is held horizontally and the cleaning target surface on the lower surface thereof is cleaned. Next, the vertical cleaning target surface of the cleaning target 4 is set. The second dry cleaning apparatus 1a to be cleaned will be described.

  As shown in the sectional view of FIG. 6A and the perspective view of FIG. 6B, the cleaning tank 6a of the second dry cleaning apparatus 1a has a cleaning tank body 10a and a cleaning tank outer edge portion 11. The washing tank body 10a is formed in a semi-cylindrical shape having an opening in the lateral direction, and is made of a porous member such as a wire net, a plastic net, a mesh, a punch metal, or a slit plate between a portion facing the opening and the lower part. The cleaning medium accelerating nozzle 16 of the cleaning medium accelerating means 7 is obliquely attached to the lower portion so that the jet outlet faces the opening of the cleaning tank body 10a. The cleaning tank outer edge portion 11 is provided above and below the opening of the cleaning tank main body 10a, gap maintaining means 40 such as rollers and rollers is provided at the outer edge end portion, and the cleaning tank main body 10a of the lower cleaning tank outer edge portion 11 is provided. A seal member 42 that is in sliding contact with the surface to be cleaned 41 of the object to be cleaned 4 is provided at the end on the opening side. The side seals 43 as shown in FIG. 6B are provided at both end portions of the cleaning tank outer edge portion 11 to prevent the cleaning medium 5 from leaking out.

  The suction hood 20 of the suction means 8 is formed, for example, in a semi-cylindrical shape, covers the cleaning medium separating means 12 of the cleaning tank body 10 a, and forms a suction duct 22 between the cleaning medium separating means 12. The suction device 21 sucks air in the cleaning tank body 10a through the suction pipe 23 connected to the suction hood 20, and removes air, dust, etc. sucked into the suction duct 22 through the cleaning medium separating means 12 in the cleaning tank 6a. Transport outside.

  The separating means 9 a includes a partition member 24 a and a first seal member 25. The partition member 24a is formed in an arc shape, and is provided in the cleaning tank body 10a at a predetermined interval from a wall surface extending from the upper part of the cleaning tank body 10a to a portion facing the opening. The first seal member 25 is made of, for example, a brush seal in which a large number of hairs are dense, and is attached to the partition wall member 24 a so that the tip portion slides on the surface to be cleaned 41 of the object to be cleaned 4. A bypass channel 26 is formed between the separating means 9a and the wall surface of the cleaning tank body 10a.

  An appropriate amount of the cleaning medium 5 is put into the cleaning tank main body 10a of the dry cleaning apparatus 1a, the opening of the cleaning tank main body 10a is directed toward the vertical cleaning target surface 41 of the cleaning target 4, and the gap between the cleaning tank outer edge 11 In the state where the maintenance means 40 is pressed against the surface 41 to be cleaned and the dry cleaning apparatus 1a is set, the air in the cleaning tank body 10a is sucked by the suction means 8 to make a negative pressure. Due to the suction of the air in the cleaning tank main body 10a, a differential pressure with the outside air is generated, the gap 29 between the cleaning tank outer edge portion 11 and the surface to be cleaned 41 becomes a flow path, and an air flow B directed into the cleaning tank main body 10a is generated. To do. The airflow B flowing into the gap 29 between the upper part of the outer edge 11 of the cleaning tank and the surface 41 to be cleaned passes through the upper wall surface of the cleaning tank body 10a and the bypass channel 26 formed by the separating means 9a in the lower direction of the cleaning tank body 10a. Flowing. In addition, the air flow B flowing in the gap 29 between the lower portion of the cleaning tank outer edge portion 11 and the surface to be cleaned 41 flows upward along the surface to be cleaned 41 along the surface to be cleaned 41, which is the direction of the separating means 9.

  In this state, the compressed air supply device 17 is driven to open the control valve 18 to supply compressed air to the cleaning medium accelerating nozzle 16, and at a high speed obliquely upward from the cleaning medium accelerating nozzle 16 toward the opening of the cleaning tank body 10 a. Blows an air current. The jetted high-speed airflow and the flying cleaning medium 5 obliquely collide with the surface to be cleaned 41, flow upward along the surface to be cleaned 41, and along the first seal member 25 and the partition wall member 24a, the cleaning tank body 10a. A loop-shaped circulating airflow A is generated inside. This loop-shaped circulating airflow flows into the cleaning tank body 10a through the bypass channel 26 from the gap 29 between the cleaning tank outer edge 11 and the surface 41 to be cleaned, the lower part of the cleaning tank outer edge 11 and the object to be cleaned. The airflow B flowing in the gap 29 of the surface 41 joins to strengthen the loop-shaped circulating airflow A. Therefore, the cleaning medium 5 in the cleaning tank main body 10 a flies in a circulating air flow without staying, repeatedly collides with the surface to be cleaned 41 and is carried to the cleaning medium acceleration nozzle 16. Further, the cleaning medium 5 leaking into the gap 29 between the upper portion of the cleaning tank outer edge 11 and the surface to be cleaned 41 can be returned to the cleaning tank body 10 a by the air flow B passing through the bypass channel 26. Therefore, a high cleaning ability can be maintained in order to stably maintain the amount of the cleaning medium 5 used for cleaning.

  In this state, the dry cleaning apparatus 1a is moved along the cleaning target surface 41 to clean the entire surface of the cleaning target surface 41. When the dry cleaning apparatus 1a is moved, the cleaning medium 5 adhering to the surface to be cleaned 41 can be collected in the cleaning tank body 10a by the seal member 42 and the first seal member 25, and the cleaning medium 5 is effectively used. be able to.

  Next, the third dry cleaning apparatus 1b for cleaning the upper surface of the cleaning object 4 will be described. As shown in the sectional view of FIG. 7, the cleaning tank 6 b of the third dry cleaning apparatus 1 b includes a cleaning tank body 10 b and a cleaning tank outer edge portion 11. The cleaning tank main body 10b has a semi-cylindrical shape having an opening in the downward direction, and is formed with a recessed upper central portion. A cleaning medium accelerating nozzle 16 of the cleaning medium accelerating means 7 is attached to the upper central portion downward so that the ejection port faces the opening of the cleaning tank body 10b. The cleaning tank outer edge portion 11 is provided above and below the opening of the cleaning tank main body 10b, gap maintaining means 40 such as rollers and rollers is provided at the outer edge end portion, and the opening portion side end of the cleaning tank main body 10a is provided. Has a sealing member 42 made of, for example, a rotating brush, which is in sliding contact with the surface 41 to be cleaned. Side seals 43 are provided at both end portions of the cleaning tank outer edge 11 to prevent the cleaning medium 5 from leaking out.

  The separating means 9 b includes a partition member 24 b and a first seal member 25. The partition member 24b is provided in the cleaning tank body 10b at a predetermined interval from each of the upper and lower wall surfaces forming the opening of the cleaning tank body 10b, and the first seal member 25, for example, densely binds a large number of hairs. The tip part is attached to the lower surface of the partition member 24b so that the tip part slides on the surface 41 to be cleaned of the object 4 to be cleaned.

  The cleaning medium separating means 12 made of a porous member and the suction hood 20 of the suction means 8 are formed in an arc shape, one end is connected to each other, and the other end is fixed to the upper surface of the partition wall member 24 to perform cleaning. A suction duct 22 is configured between the medium separating means 12 and the suction hood 20, and a bypass flow path 26 is formed between the suction hood 20 and the wall surface of the cleaning tank body 10b. The suction hood 20 is connected to the suction pipe 23 on the side surface, sucks air in the cleaning tank body 10b, and transports air, dust, etc. sucked into the suction duct 22 through the cleaning medium separating means 12 to the outside of the cleaning tank 6b. To do.

  When the cleaning target surface 41 that is the upper surface of the cleaning target object 4 is cleaned by the dry cleaning apparatus 1b, an appropriate amount of the cleaning medium 5 is placed on the cleaning target surface 41, and the cleaning tank body is placed at the position of the placed cleaning medium 5 In the state where the opening 10a is arranged and the gap maintaining means 40 of the outer edge 11 of the cleaning tank is pressed against the surface 41 to be cleaned and the dry cleaning apparatus 1b is set, the suction means 8 sucks the air in the cleaning tank body 10b. To negative pressure. In this state, the compressed air supply device 17 is driven to open the control valve 18 to supply compressed air to the cleaning medium accelerating nozzle 16, and a high-speed air flow downward from the cleaning medium accelerating nozzle 16 toward the opening of the cleaning tank body 10 a. Erupt. The jetted high-speed air current collides with the surface to be cleaned 41, flows upward along the surface to be cleaned 9 b toward the separating unit 9 b, and moves upward along the separating unit 9 b and the cleaning medium separating unit 12. A loop-shaped circulating airflow A is generated on both sides of the center to cause the cleaning medium 5 to fly and collide with the object to be cleaned 41. On the other hand, the airflow B flowing from the gap 29 between the cleaning tank outer edge portion 11 and the surface to be cleaned 41 passes through the bypass flow path 26 and joins the loop-shaped circulating airflow A and is guided to the cleaning medium acceleration nozzle 16 side. Since the air flow B flows into the cleaning tank main body 10b along the acceleration direction of the cleaning medium acceleration nozzle 16, an effect of further strengthening the high-speed air current ejected by the cleaning medium acceleration nozzle 16 is obtained. Therefore, the speed of the cleaning medium 5 that collides with the object to be cleaned 41 and the collision frequency can be increased, and higher cleaning ability can be obtained. This cleaning operation is performed while reciprocating the dry cleaning apparatus 1b along the surface 41 to be cleaned.

  When reciprocating the dry cleaning apparatus 1b, when the flaky cleaning medium 5 adheres to the surface to be cleaned 41, only the action of the airflow flowing from the gap 29 between the cleaning tank outer edge portion 11 and the surface to be cleaned 41 is obtained. In some cases, the cleaning tank body 10a cannot be returned to the cleaning tank body. However, by using a rotating brush as the seal member 42, the cleaning medium 5 attached to the surface to be cleaned 41 is swung up and placed on the airflow flowing from the gap 29. It can return to the main body 10b, and the cleaning medium 5 can be used effectively.

It is a perspective view which shows the dry-type cleaning apparatus of this invention. It is a block diagram of a dry-type cleaning apparatus. It is a partial expanded sectional view which shows the structure of a dry-type cleaning apparatus. It is a partial expanded sectional view which shows the 2nd structure of a dry-type cleaning apparatus. It is a partial expanded sectional view which shows the 3rd structure of a dry-type cleaning apparatus. It is a block diagram of the 2nd dry cleaning apparatus. It is sectional drawing which shows the structure of a 3rd dry cleaning apparatus.

Explanation of symbols

1; dry cleaning device, 2; cleaning tank unit, 3;
4; cleaning object, 5; cleaning medium, 6; cleaning tank, 7; cleaning medium acceleration means,
8; suction means, 9; separation means, 10; washing tank body, 11; washing tank outer edge,
12; Cleaning medium separating means; 13; Opening portion; 14; Nozzle fixing portion; 15; Guide member;
16; cleaning medium acceleration nozzle; 17; compressed air supply device; 18; control valve;
20; suction hood, 21; suction device, 22; suction duct, 24; partition member,
25; first seal member, 26; bypass flow path, 28; second seal member,
30: Seal member moving means, 31: Bypass flow path opening / closing valve.

Claims (14)

A dry cleaning apparatus for cleaning by causing a cleaning medium flowing by an air current to collide with an object to be cleaned,
A cleaning tank main body having an opening on one side, an outer edge of the cleaning tank having an opening of the cleaning tank main body and spaced from the object to be cleaned, and a wall surface of the cleaning tank main body A cleaning tank having a cleaning medium separating means provided in a part of the cleaning medium separation means having an opening through which gas and dust can pass but the cleaning medium cannot pass through;
Cleaning medium acceleration means for accelerating the cleaning medium by ejecting a high-speed air flow toward the opening of the cleaning tank body;
Suction means for sucking air in the cleaning tank body through the cleaning medium separating means, and transporting sucked air and dust to the outside of the cleaning tank;
The air flow that is provided in the vicinity of the cleaning tank outer edge of the opening of the cleaning tank main body and passes through the gap between the object to be cleaned and the outer edge of the cleaning tank does not pass through the opening. And a separating means for forming a bypass passage for flowing into the cleaning tank body.   2. The dry cleaning apparatus according to claim 1, wherein the separation unit causes an airflow flowing into the cleaning tank body from the bypass flow path to flow along an inner wall of the cleaning tank body.   The separation unit is configured to cause the airflow flowing into the cleaning tank main body from the bypass flow path to flow into the cleaning medium acceleration unit so as to merge with the airflow circulating in the cleaning tank main body. The dry cleaning apparatus according to claim 1 or 2.   4. The dry cleaning apparatus according to claim 3, wherein the cleaning medium accelerating means protrudes from an inner wall surface of the cleaning tank body.   The dry cleaning apparatus according to claim 1, wherein the separation unit includes a seal member that is in sliding contact with the object to be cleaned.   The cleaning object holding means for holding the cleaning object is provided, and the cleaning object holding means has a second seal member that is in sliding contact with the outer edge of the cleaning tank. The dry cleaning apparatus according to any one of 5.   The dry cleaning apparatus according to any one of claims 1 to 5, wherein a sealing member that is in sliding contact with the object to be cleaned is provided at the outer edge of the cleaning tank.   Drive means for opening and closing the bypass flow path by bringing the separation means into and out of contact with the object to be cleaned, and the drive means closes the bypass flow path when the separation means is separated from the object to be cleaned. A dry cleaning apparatus according to any one of claims 1 to 7.   The dry cleaning apparatus according to claim 8, wherein the bypass flow path is provided with a cleaning medium detection unit. A dry cleaning method in which a cleaning medium flowing by an air current collides with an object to be cleaned and is cleaned,
Through a cleaning medium separation means provided on a part of the wall surface of the cleaning tank main body having an opening at the outer edge of the cleaning tank arranged with a predetermined gap with respect to the object to be cleaned, and having an opening through which the cleaning medium cannot pass. When cleaning the object to be cleaned by jetting high-speed airflow in the direction of the opening of the main body of the cleaning tank while transporting the sucked dust to the outside of the cleaning tank, it passes through the gap between the cleaning object and the outer edge of the cleaning tank. A dry cleaning method, wherein an airflow flowing into a cleaning tank body is allowed to flow into a cleaning tank body through a bypass channel without passing through the opening.   The dry cleaning method according to claim 10, wherein an airflow flowing into the cleaning tank main body from the bypass channel is caused to flow along an inner wall of the cleaning tank main body.   The dry cleaning according to claim 10 or 11, wherein an airflow flowing into the cleaning tank main body from the bypass channel is caused to flow into the cleaning tank main body so as to merge with an airflow circulating in the cleaning tank main body. Method.   A washed object, which is washed by the dry washing method according to any one of claims 10 to 12.   13. A recycling apparatus according to claim 10, wherein the parts of the apparatus that has been used, recovered and disassembled are cleaned, and the apparatus is restored by reassembling the cleaned parts. Production method.

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