JP5709296B2 - Roll and cleaning equipment - Google Patents

Description

  The present invention is equipped with a roll for removing, squeezing, and cleaning liquids such as moisture, oil, or chemical components adhering to a steel plate, non-ferrous metal plate, resin plate, or film-like surface to be cleaned, and the roll. The present invention relates to a cleaning device.

  For this type of conventional roll, a nonwoven fabric roll, a rubber roll, etc. are generally used. For example, for a nonwoven fabric roll, a polymer elastic body is porous in a void of a nonwoven fabric in which ultrafine fibers are sterically entangled. There is a liquid-absorbing roll (Patent Document 1) in which a large number of disk-shaped materials made of a fibrous sheet filled with a structure are superimposed.

  Since the liquid absorption roll of patent document 1 is not equipped with the external device required in order to attract | suck a liquid, the roll part which consists of a nonwoven fabric layer will be in a liquid absorption saturated state gradually. The liquid removal function in a roll that does not include an external device necessary for sucking the liquid is a roll that is rotating while applying a certain pressure such as air pressure or hydraulic pressure via a compressor or the like. In the compression zone where the cleaning surface comes into contact with the surface to be cleaned and the pressure is compressed by pressure while contacting the surface to be cleaned while the roll is rotating In the open zone where the absorbed liquid is once released to the surface to be cleaned, and then the roll is released from compression by pressure, the liquid on the surface to be cleaned is sucked into the roll by the capillary action of the fibers forming the nonwoven fabric, and the roll And an intake / exhaust function composed of a mechanism that is discharged into the gap of the part. The dam function is a function expressed in a rubber roll or the like, but the suction / exhaust function is a function specific to the nonwoven fabric roll. That is, since the elastic polymer filled in the nonwoven fabric is elastically deformed, the porosity of the roll portion becomes 0% in the compression zone and is restored to the original porosity in the open zone. However, when the liquid is repeatedly absorbed and discharged from the gap of the roll part, the polymer elastic body comes into contact with the liquid and gradually swells to lower the elastic modulus, and the open zone Thus, the original porosity cannot be restored. For this reason, the entire volume of liquid sucked up by the capillary action of the fibers cannot be released into the gap portion of the roll portion where the porosity is reduced, and the roll portion becomes saturated with liquid absorption, and the liquid removal function is long. It had the problem of not lasting for a period. As for the relationship between the elastic modulus and swelling degree of the polymer elastic body, Flory's theory of rubber elasticity is known in which the elastic modulus is inversely proportional to the third power of the swelling degree.

  In order to solve the above problem, a cylindrical shaft body having a hollow portion opened in the axial direction of one of the main bodies and a plurality of through holes communicating with the hollow portion on the peripheral surface of the main body and bearing portions at both ends. And a blowing or suction means provided at the opening of the shaft main body, and a roll body provided with a large number of nonwoven fabrics having an appropriate density superimposed on the shaft main body in a pressure-bonding manner. Non-woven roll used for textile processing that is configured to blow out fluid such as water and treatment liquid and suck fluid such as water and treatment liquid to the shaft body through the roll body by a suction means (Patent Document 2) There is.

  Also, a delivery / absorption system comprising a shaft body having a liquid-absorbing function, a nonwoven fabric roll composed of a nonwoven fabric sheet crimped and superimposed on the shaft body, and a vacuum pump communicated with the nonwoven fabric roll via a pipe. A liquid-absorbing method using a nonwoven fabric roll having a liquid function, wherein the liquid-absorbing method is intended to enhance the vacuum value due to suction resistance and the function of the capillary tube, and the nonwoven fabric portion is in a wet liquid-absorbing state. In this state of use, through the through holes formed in the shaft main body in a staggered manner, etc., the inside of the non-woven fabric portion in the liquid absorption state is almost tilted toward the outer surface of the non-woven fabric roll. The liquid suction and liquid feeding capillary portions effective for the conical shape are allowed to act and a part of the vacuum suction force is configured to be superimposed on the outer surface of the nonwoven fabric roll, whereby the vacuum suction force is Non-woven A liquid absorption method using a nonwoven fabric roll has a structure to uniformly act on the outer surface of the roll, the liquid absorbing roll apparatus used in the liquid-absorbing method (Patent Document 3) has been devised.

Japanese Patent Application Laid-Open No. 61-262586 JP 59-53764 A JP-A-7-120145

  In the nonwoven fabric roll of Patent Document 2, in addition to the dam function and the suction / discharge function of the nonwoven fabric roll, the liquid absorbed by the roll body is discharged to the outside of the nonwoven fabric roll by the blowing or suction means, and is necessary for liquid absorption. Compared with the nonwoven fabric roll not provided with an external device, the liquid absorption saturation state of the roll body is suppressed, and the liquid removal function is maintained for a long period of time. However, depending on how the nonwoven fabric roll is manufactured, the inner diameter of the nonwoven fabric superimposed on the outer periphery of the shaft body and the outer diameter of the shaft body are substantially the same, and the adhesion between the inner periphery of the nonwoven fabric and the outer periphery of the shaft body is improved. Inferior, a gap is generated during the rotation of the roll, and blowout leakage or suction leakage tends to occur from the gap portion, resulting in poor liquid blowing performance or suction performance. Therefore, particularly when sucking the liquid, a high suction force is required, and there is a problem that a load is applied to the suction device.

  Moreover, in the liquid absorption roll apparatus of patent document 3, the vacuum pump is used for attracting | sucking a liquid from a nonwoven fabric layer. Since the vacuum pump is expensive, a large capital investment is required. Furthermore, since the vacuum pump requires electricity to operate, there is a problem that a large amount of electricity is spent and the running cost increases.

  An object of the present invention is to solve the above-described conventional problems, and to provide a roll that efficiently and surely sucks liquid at a low negative pressure, and a cleaning device having the roll and the liquid suction device at low cost. It is said.

In order to solve the conventional problem, the roll of the invention of claim 1 removes liquid such as moisture, oil, or chemical components adhering to a steel plate, non-ferrous metal plate, resin plate, or film-like surface to be cleaned. In order to squeeze and wash, a roll mounted on a suction device for sucking a liquid , the roll has a roll part, a pedestal, and a stopper, and the pedestal has a body part in which an opening is formed, and the A joint part A and a joint part B connected to both ends of the main body part, the joint part A and / or the joint part B is formed with a hollow part, and the hollow part is communicated with the opening; the outer periphery of the main body and communicating with said opening, the bore fluid introduction portion is formed in a funnel shape are opened in the tip, the roll portion is formed, the roll unit consists of a nonwoven fabric, The hole formed in the center and the outside And a plurality of generally annular roll pieces having side edges formed on each other, and at least one end of the roll pieces is fixed by the stopper, and the inner diameter of the roll piece is the outer diameter of the main body. It is formed in a smaller size, the adhesion between the inner periphery of the roll piece and the outer periphery of the main body is increased, and the air tightness of the roll is improved. When the roll is connected to a liquid suction device, suction leakage can be prevented, and the liquid absorbed by the roll part passes through the hole part in the order of the opening part and the hollow part by the suction force, and then goes out of the roll. Discharged. Therefore, it is possible to provide a roll that can reliably suck liquid from the roll portion and can suck liquid at a low negative pressure. In addition, the fluid introduction part is formed in a funnel shape at the tip of the hole, and when the roll is connected to a liquid suction device, the suction force is greater than that of the straight hole in which the fluid introduction part is not formed. Can be made to act uniformly in a substantially conical shape. As a result, the number of holes formed in the outer periphery of the main body or the opening area can be reduced as compared with the straight hole, so that the liquid can be reliably sucked from the roll part with a low negative pressure. Moreover, since the external stress with respect to a roll can be disperse | distributed, the intensity | strength of a roll improves.

  The roll of the invention of claim 2 is the roll of claim 1 in particular, wherein at least one end portion of the pedestal is formed with a threaded portion, and a fastener is screwed to the pedestal with respect to the threaded portion. Since it is fastened, the adhesiveness between the end of the roll part and the stopper is increased, and the airtightness of the roll is further improved. Therefore, if the roll is connected to a liquid suction device, suction leakage can be prevented, and the liquid can be sucked efficiently and reliably with a lower negative pressure.

A cleaning device according to a third aspect of the present invention is the cleaning apparatus according to the first or second aspect , a driving means for rotationally driving the roll, and generating a negative pressure by allowing a compressed fluid to flow in from the outside. The suction device that has a suction device that sucks the liquid from the roll and generates a negative pressure by flowing a compressed fluid is less expensive than a vacuum pump that mechanically generates a negative pressure using electricity It is. Therefore, it is possible to provide a cleaning device at a reduced cost.

  In addition, the liquid suction device of the cleaning device of the present invention has a suction force weaker than that of the vacuum pump, but the roll of the present invention prevents suction leakage and can suck the liquid even at a low negative pressure. It has become. Therefore, the cleaning device can reliably suck the liquid from the roll.

  In the liquid suction device, the conduit of the flow pipe into which the compressed fluid flows is formed in a tapered shape. The law of conservation of energy holds that the sum of the potential energy, kinetic energy, and pressure energy of the compressed fluid that has flowed into the tapered pipe is always constant at any arbitrary position in the pipe. The law of conservation of energy in the pipeline as described above is generally called Bernoulli's theorem. Since the potential energy of the compressed fluid only passes through the pipe in the same horizontal direction, it is the same at any position in the pipe. In addition, the kinetic energy of the compressed fluid is maximized because the flow velocity is the fastest at the throttle portion where the cross-sectional area of the pipeline is the smallest, and is minimal because the flow velocity is slowest at the open portion where the cross-sectional area of the pipeline is the largest. It becomes. Therefore, the pressure energy is minimum at the throttle portion where the kinetic energy is maximum, and is maximum at the open portion where the kinetic energy is minimum. Since the pressure energy is minimized at the constricted portion of the pipe line formed in a tapered shape, the pressure in the vicinity of the constricted portion is smaller than that in the atmosphere, that is, a negative pressure is generated. Therefore, when the compressed fluid is caused to flow into the suction device, a negative pressure is generated and the liquid is sucked from the roll.

The roll according to the first aspect of the present invention can prevent suction leakage, reliably suck liquid from the roll portion, and suck with low negative pressure. Moreover, the strength of the roll can be improved.

  The roll according to the second aspect of the present invention prevents suction leakage and can efficiently and reliably suck the liquid from the roll portion with a lower negative pressure.

The cleaning device according to the third aspect of the invention can reliably provide the liquid from the roll, and can be provided at a low cost while suppressing the cost.

It is a front view of the roll of this invention. It is sectional drawing of FIG. (A) The top view of a roll piece, (b) It is AA sectional drawing of a main-body part. (A) The front view of a base, (b) The perspective view which looked at the plate from the front side, (c) The perspective view which looked at the fastener from the front side. It is AA sectional drawing of FIG. It is explanatory drawing of the washing | cleaning apparatus carrying the roll of this invention. It is explanatory drawing inside a suction device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

  The roll of Example 1 is demonstrated using FIGS. 1-5.

  1 and 2, the roll 1 includes a pedestal 3, a stopper 5, a plate 6, and a roll portion 2 including a plurality of roll pieces 4. The pedestal 3 is made of a metal material such as iron, SUS, and aluminum. The pedestal 3 is formed with a roll part 2 on the outer periphery, and is connected to the main body part 7 having the opening 10 and one end of the main body part 7 and is hollow. The joint portion A8 having the portion 11 and the solid joint portion B9 connected to the other end of the main body portion 7 are formed. The roll part 2 is formed by laminating a plurality of roll pieces 4 on the outer periphery of the main body part 7 constituting the pedestal 3, and overlapping the roll part 2, and is sandwiched between the stopper 5 and the plate 6 from both sides. It is formed. The fastener 5 is a screw-fastened lock nut. In this embodiment, the joint portion A8 is hollow and the joint portion B9 is solid. However, both the joint portion A8 and the joint portion B9 may be hollow.

  In FIG. 2, FIG. 3 (b), FIG. 4 (a), and FIG. 5, a groove portion 21 is formed at two equal portions on the outer periphery of the main body portion 7 constituting the base 3, and a plurality of circular shapes are formed. Are formed in a zigzag pattern. The hole portion 14 communicates with the opening portion 10 of the main body portion 7, and a fluid introduction portion 20 is formed in a funnel shape at an end portion on the roll piece 4 side. The joint portion A8 is provided with a hollow portion 11, and at one end portion thereof is formed with a screw portion A12 to which a rotary joint (not shown) is connected, and the other is a portion of the main body portion 7. It is connected with the edge part via the junction part 15 by welding. The joint portion B9 is solid, and one end portion is connected to the end portion of the main body portion 7 via a joining portion 15 by welding.

  Further, a gradually changing portion 13 having an inclined surface is formed in the vicinity of the joint portion 15 between the main body portion 7 and the joint portion A8. Accordingly, in the vicinity of the joint 15 between the main body 7 and the joint A8, the opening area of the opening 10 is smaller than the opening area of the substantially central portion of the main body 7. Since the gradually changing portion 13 is formed, when the roll 1 is connected to a liquid suction device, the liquid absorbed by the roll portion 2 is opened through the hole portion 14 as indicated by a two-dot chain line arrow by the suction force. It flows into the part 10, passes through the hollow part 11 without staying in the vicinity of the joint part 15, and is discharged to the outside of the roll 1.

  The plate 6 fixed to both ends of the roll portion 2 and the stopper 5 are made of a metal material such as iron, SUS, or aluminum, and are formed in an approximately annular shape as shown in FIGS. 4 (b) and 4 (c). The screw portion C23 formed on the inner periphery of the stopper 5 is fitted and fixed to the screw portion B22 formed on the outer periphery of the joint portion A8 and the joint portion B9.

  In FIG. 3A, the roll piece 4 is composed of a substantially annular nonwoven fabric 16 having a hole 17 at the center and a side edge 18 at the outer periphery. Convex portions 19 are provided at two locations on the inner circumference of the roll piece 4, and the convex portions 19 are inserted into grooves 21 formed at two locations on the outer circumference of the main body portion 7 as shown in FIG. Thus, it becomes a detent when the roll 1 rotates. The roll unit 2 is formed from the total number of roll pieces 4 used for the roll 1. Although not particularly illustrated, as another method for preventing the rotation deviation of the roll piece 4 with respect to the pedestal 3, a concave groove is formed on the inner periphery of the roll piece 4, and the longitudinal direction of the main body portion 7 constituting the pedestal 3 is formed. The roll piece 4 may be laminated on the outer periphery of the main body 7 by attaching a convex key to the outer periphery of the main body 7 and fitting and inserting the concave groove into the convex key.

Further, as shown in FIGS. 3A and 3B, the inner diameter D ₁ of the roll piece 4 is set smaller than the outer diameter D ₂ of the main body portion 7. Since the roll piece 4 is formed of the nonwoven fabric 16, there is a gap between the fibers constituting the nonwoven fabric 16, and it has elasticity, so that the inner diameter D ₁ is larger than the outer diameter D _{2 of the} main body portion 7. Even if it is made smaller, it can be laminated on the outer periphery of the main body 7. D ₁ is preferably set to about 99.9 to 95.0% of D ₂ . If it is larger than 99.9%, a gap is likely to be generated between the inner periphery of the roll piece 4 and the outer periphery of the main body part 7, and if it is smaller than 95.0%, it is difficult to stack the roll piece 4 on the outer periphery of the main body part 7, Workability at the time of manufacturing the roll 1 is deteriorated. Incidentally, hardly a gap on the outer periphery of the inner and main body portion 7 of the roll pieces 4, and when considering the workability of roll 1 production, and more preferably D ₁ of the D ₂ 99.5-97.0 It is good to set to about%.

  Next, a manufacturing method of the roll 1 will be described.

  First, a substantially cylindrical main body 7 having a hole 14 and a groove 21 on the outer periphery and having an opening 10 is prepared. Next, the hollow joint portion A8 having the hollow portion 11 in which the gradually changing portion 13 is formed and the solid joint portion B9 are inserted into both ends of the main body portion 7, and are press-fitted or shrinked. The main body part 7, the joint part A8, and the joint part B9 are integrated through the joint part 15 by welding to form the base 3. As long as the strength of the pedestal 3 is maintained, the connecting method of the main body 7, the joint A8, and the joint B9 may be a method such as screwing or bolting.

  Next, a flat nonwoven fabric 16 having a plurality of fibers is prepared, and the convex portion 19 is formed on the nonwoven fabric 16 by using a Thomson type or a laser cutter. Punching into a generally annular roll piece 4 having an edge 18. Next, a plurality of the roll pieces 4 are overlapped, the hole portion 17 is penetrated through the base 3, and the convex portion 19 is fitted and inserted into the groove portions 21 formed at two equal portions on the outer periphery of the main body portion 7. . And after compressing only predetermined length with the press machine from the longitudinal direction of the base 3, the several roll piece 4 is pinched | interposed and fixed with the metal fitting 5 and the plate 6. FIG. At that time, the screw portion C23 formed on the inner periphery of the stopper metal 5 is fitted and fixed to the screw portion B22 formed on the outer periphery of the joint portion A8 and the joint portion B9. Next, by leaving it to stand for a predetermined time, the internal stress of the plurality of roll pieces 4 overlapped is made uniform, the side edge 18 is cut and polished, and the roll is rolled on the outer periphery of the main body 7 constituting the base 3. The part 1 is formed and the roll 1 is manufactured.

  The hardness of the surface portion of the roll portion 2 is desirably set to about 40 ° to 95 °. When the hardness is less than 40 °, the hardness is too low, and the roll part 2 is worn early when the end face of the surface to be cleaned repeatedly contacts the roll part 2. On the other hand, if the hardness exceeds 95 °, the hardness is too high, the elasticity of the roll 1 is inferior, and it becomes difficult to effectively exhibit the dam function and the suction / discharge function. In addition, hardness represents the hardness of a substance and is the hardness measured by the durometer hardness test described in the hardness test method of JISK6253 vulcanized rubber and thermoplastic rubber.

  The diameter of the hole 14 is not particularly limited. For example, the diameter of the hole 14 is preferably set to about 1 to 8 mm. When the diameter of the hole 14 is less than 1 mm, the diameter is too small to efficiently flow the liquid into the opening 10, and when the diameter exceeds 8 mm, the diameter is too large to suck the liquid per hole. Becomes weaker. The fluid introduction part 20 is preferably formed in a funnel shape with an angle of 30 ° to 60 ° with respect to the hole part 14. If it is less than 30 °, it becomes close to a straight hole, and it becomes difficult to suck liquid efficiently and reliably from the roll part 2, and if it exceeds 60 °, it becomes almost parallel to the outer periphery of the main body part 7, and again the roll part It becomes difficult to aspirate liquid efficiently and reliably from 2.

  Next, several methods for manufacturing the nonwoven fabric 16 constituting the roll piece 4 will be described.

  In the first method, a plurality of fibers are accumulated in a flat plate shape to form a cloth-like body, a plurality of the cloth-like bodies are overlapped, and then a special needle is pierced to entangle in three dimensions. The obtained nonwoven fabric 16 is obtained. The above manufacturing method is generally called needle punching. The cloth-like body is called a web. The obtained nonwoven fabric 16 is impregnated in a polyurethane solution, and the nonwoven fabric 16 is filled with polyurethane. Next, the nonwoven fabric 16 filled with polyurethane is immersed in water, carbon dioxide is injected into the water, and carbonic acid foaming is performed. Form a double structure. For the fibers forming the nonwoven fabric 16, polyester fibers, nylon fibers, spandex fibers also called urethane elastic yarns, etc. are used alone or in combination.

  In the second method, a plurality of fibers are accumulated in a flat plate shape to form a web that becomes a cloth-like body, and the nonwoven fabric 16 entangled three-dimensionally by needle punching is obtained. The obtained nonwoven fabric 16 is bonded with a polymer elastic body containing a crosslinking agent by a method such as spraying, dipping, impregnation, and the like, and the fibers forming the nonwoven fabric 16 are bonded by heating. The nonwoven fabric 16 obtained by the manufacturing method is generally called a chemical bond method nonwoven fabric. In addition, as a fiber which forms the nonwoven fabric 16, natural fibers, such as cotton, rayon, and cellulose, and synthetic fibers, such as polyester, nylon, and acryl, are used alone or in combination. In addition, nitrile rubber, acrylic rubber, styrene rubber, urethane rubber, acrylic resin, urethane resin and the like are used alone or in combination for the polymer elastic body. The crosslinking agent is blended for the purpose of forming a bridge structure between the molecules of the polymer elastic body and imparting further excellent elasticity to the polymer elastic body. Trimethylolmelamine, hexamethylol Melamine resins such as melamine, isocyanate resins such as blocked isocyanate, and epoxy resins such as aliphatic epoxy can be used alone or in combination.

  The third method involves melt spinning a synthetic resin such as a polyamide resin, a polyester resin, a polyethylene resin, or a polypropylene resin and injecting a high-pressure water stream of about 100 to 150 kgf to the obtained synthetic fiber to entangle the fibers. Let Next, the elastic polymer blended with the crosslinking agent is attached to the fiber using a method such as spraying, dipping, or impregnation, and the nonwoven fabric 16 is formed by heating to form the nonwoven fabric 16. Is generally referred to as hydroentangled nonwoven fabric.

  The manufacturing method of the nonwoven fabric 16 shown above is a representative example. In addition to the above, for example, a hot melted synthetic resin is continuously spun to form fibers, and the fibers are stretched on the collection net. Spunbond method in which fibers are combined to form a nonwoven fabric 16 by pressurizing with a hot roll, and when hot melted synthetic resin is discharged from the spinneret, it is spun with high-temperature air and heated on a collection net The melt-blown method for bonding the formed fibers to form the nonwoven fabric 16; the synthetic resin is dissolved in a low-boiling solvent such as methylene chloride and chlorofluorocarbon; and the fiber is spun in a heated and pressurized state at the same time as the low-boiling point The flash spinning method in which the solvent is volatilized, the fibers are collected on a collection net, and pressed with a hot roll to bond the fibers to form the nonwoven fabric 16. The one with a higher melting point by melting a plurality of synthetic resins having different melting points Synthetic tree A nonwoven fabric 16 produced by a fiber bond method, a thermal bond method, or the like, in which a nonwoven fabric 16 is formed by adhering fibers using a molten synthetic resin having a lower melting point as a binder, is used. I do not care. When the nonwoven fabric 16 is formed on the roll 1, it is strong against repeated contact of the surface to be cleaned and the fibers are not easily frayed. Compared to the case where other fabrics such as woven fabric and knitted fabric are used for the roll 1, This leads to improvement in durability of the roll 1.

  The selection of the nonwoven fabric 16 used for the roll piece 4 is appropriately determined in consideration of the ambient temperature in which the roll 1 is used, the use conditions such as the properties of the liquid to be removed, the cost, and the like.

  The operation and action of the roll 1 configured as described above are as follows.

The roll 1 includes a roll portion 2, a pedestal 3, a stopper 5, and a plate 6. The pedestal 3 includes a main body portion 7 in which an opening 10 is formed, and a joint portion A8 and a joint that are connected to both ends of the main body portion 7. A hollow portion 11 is formed in the joint portion A8, and the hollow portion 11 is communicated with the opening portion 10, and a hole portion 14 communicating with the opening portion 10 is formed on the outer periphery of the main body portion 7. At the same time, the roll part 2 is formed, and the roll part 2 is formed by laminating a plurality of substantially annular roll pieces 4 made of nonwoven fabric 16, and both ends are fixed by fasteners 5 and plates 6. the inner diameter D ₁ of the 4 because that is formed smaller than the outer diameter D ₂ of the main body portion 7, increasing adhesion to the outer periphery of the inner periphery and the main body portion 7 of the roll piece 4, to improve the airtightness of the roll 1 . When the roll 1 is connected to a liquid suction device, suction leakage can be prevented, and the liquid absorbed by the roll portion 2 is opened through the hole portion 14 as shown by a two-dot chain line arrow in FIG. It passes through the part 10 and the hollow part 11 in this order and is discharged to the outside of the roll 1. Therefore, the liquid can be reliably sucked from the roll unit 2 and the liquid can be sucked with a low negative pressure.

  The stopper 5 is fastened to the pedestal 3 with a screw-fastened lock nut. The adhesion between the end of the roll part 2 and the plate 6 and the stopper 5 is increased, and the airtightness of the roll 1 is further improved. Therefore, when the roll 1 is connected to a liquid suction device, suction leakage can be prevented, and the liquid can be sucked efficiently and reliably with a lower negative pressure.

  Since the funnel-shaped fluid introduction portion 20 is formed at the tip of the hole portion 14, when the roll 1 is connected to a liquid suction device, the suction force is increased as compared with a straight hole in which the fluid introduction portion 20 is not formed. On the outer periphery of the roll part 2, it can be made to act uniformly in a substantially conical shape as indicated by a two-dot chain line shown in FIG. Therefore, the number or the opening area of the holes 14 formed on the outer periphery of the main body 7 can be reduced as compared with the straight hole, so that the liquid can be reliably sucked from the roll unit 2 with a low negative pressure. it can.

  Moreover, since the fluid introduction part 20 is formed in the hole part 14, since the stress from the outside with respect to the roll 1 can be disperse | distributed, the intensity | strength of the roll 1 improves.

  A cleaning apparatus according to the second embodiment will be described with reference to FIGS. 6 and 7. In addition, in order to make description of a structure easy, suppose that illustration and description of the bearing part of each component and a support component are abbreviate | omitted. Further, the roll is used for removing oil adhering to the steel plate.

  In FIG. 6, rolls 31 a and 31 b are installed in a pair on the cleaning device 30, and a constant pressure is applied to both ends of the pedestal 33 of the roll 31 a located at the upper part, that is, the joint part A 38 and the joint part B 39. A piece-shaped steel plate 43 having oil (not shown) attached on both sides is sent in the direction of the white arrow between the upper roll 31a and the lower roll 31b. ing. A rotary joint 37 is inserted into the end portion of the joint portion A38, and is connected to the suction device 40 via a pipe A35 and a T-shaped pipe joint A44. The upper roll 31 a removes oil from the surface of the steel plate 43, and the lower roll 31 b removes oil from the back surface of the steel plate 43. The steel plate 43 to which the oil component has adhered comes into contact with the roll portion 32, and the oil component is sucked up by the roll portion 32 and discharged into the gap of the roll portion 32 due to the capillary action of the fibers of the nonwoven fabric constituting the roll portion 32. The rolls 31a and 31b are the same as the roll 1 of the first embodiment described above.

  In the state of the rolls 31a and 31b as described above, when the compressed fluid is introduced from the pipe B36 toward the pipe joint B45 connected to the flow pipe 41 of the suction device 40 and the suction force is applied to the suction device 40, the roll Oil that is negatively applied to the part 32 and absorbed by the roll part 32 flows into the opening through the hole, passes through the pipe A35 from the hollow part formed in the joint A38, and flows from the pipe joint A44 to the distribution pipe. The liquid flows to 41 and is sucked into the liquid container. Therefore, since the liquid absorption saturation state of the roll part 32 is eliminated and the suction / discharge function is maintained, the rolls 31a and 31b can reliably remove the oil adhering to the steel plate 43 over a long period of time.

  Next, the suction mechanism of the suction device 40 included in the cleaning device 30 of the present invention will be described with reference to FIG.

  In the suction device 40, a pipe line 47 of the flow pipe 41 into which the compressed fluid B flows through the pipe joint B45 is formed in a taper shape. The law of conservation of energy holds that the sum of the potential energy, kinetic energy, and pressure energy of the compressed fluid B that has flowed into the tapered pipe 47 is always constant at any arbitrary position in the pipe 47. . The law of energy conservation in the pipe 47 as described above is generally called Bernoulli's theorem. Since the potential energy of the compressed fluid B only passes through the pipe 47 in the same horizontal direction, it is the same at any position in the pipe 47. Further, the kinetic energy of the compressed fluid B is maximized because the flow velocity is the fastest at the throttle portion 48 having the smallest pipe cross-sectional area, and the flow velocity is the slowest at the open portion 49 where the cross-sectional area of the pipe 47 is largest. Therefore, it is minimized. Therefore, the pressure energy is minimized at the throttle portion 48 where the kinetic energy is maximized, and is maximized at the open portion 49 where the kinetic energy is minimized. Since the pressure energy is minimized at the throttle portion 48 of the pipe line 47 formed in a tapered shape, the pressure in the vicinity of the throttle portion 48 is smaller than that in the atmosphere, that is, a negative pressure is generated. Therefore, when the compressed fluid B is introduced into the suction device 40, a negative pressure is generated, and the oil C is sucked from the pipe joint A44 into the conduit 47 from the rolls 31a and 31b.

  The oil C sucked into the pipe line 47 hits the wall body 50 together with the compressed fluid B as indicated by a two-dot chain line arrow, is discharged into the liquid container 42, and accumulates in the liquid container 42. The compressed fluid B is liquid The oil is separated from the oil C in the container 42, passes through the pipe 47, and is discharged to the outside from an exhaust port 46 formed at the other end of the flow pipe 41. The oil C accumulated in the liquid container 42 is returned to a liquid tank (not shown) provided in the cleaning device when the interior of the liquid container 42 is full.

  The operation and action of the cleaning device 30 configured as described above are as follows.

  The cleaning device 30 generates rolls 31a and 31b, drive means 34 for rotating the rolls 31a and 31b, and a compressed fluid B from the outside to generate negative pressure, and oil C from the rolls 31a and 31b by negative pressure. The suction device 40 having the suction device 40 that sucks the suction fluid and generating the negative pressure by flowing the compressed fluid B is less expensive than the vacuum pump that mechanically generates the negative pressure using electricity. is there. Therefore, the cleaning device 30 can be provided at a reduced cost.

  Further, the suction device 40 for the oil C included in the cleaning device 30 of the present invention has a weak suction force as compared with the vacuum pump. However, the rolls 31a and 31b of the present invention prevent the leakage of suction, and the oil content C even at a low negative pressure. It is a structure that can suck. Therefore, the cleaning device 30 can reliably suck the oil C from the rolls 31a and 31b.

  The roll of the present invention is mainly used for the purpose of removing, squeezing, and cleaning liquids such as moisture, oil, or chemical components adhering to the steel plate, non-ferrous metal plate, resin plate, or film-like surface to be cleaned. As a roll that requires high liquid removal performance, it can be used widely and suitably.

DESCRIPTION OF SYMBOLS 1, 31a, 31b Roll 2, 32 Roll part 3, 33 Base 4 Roll piece 5 Fastening metal plate 6 Plate 7 Main body part 8, 38 Joint part A
9, 39 Joint B
10 Opening portion 11 Hollow portion 12 Screw portion A
13 Gradual change part 14 Hole part 15 Joint part 16 Nonwoven fabric 17 Hole part 18 Side edge part 19 Convex part 20 Fluid introduction part 21 Groove part 22 Screw part B
23 Screw part C
30 Cleaning device 34 Drive means 35 Pipe A
36 Piping B
37 Rotary joint 40 Suction device 41 Flow pipe 42 Liquid container 43 Steel plate 44 Piping joint A
45 Piping joint B
46 Exhaust port 47 Pipe line 48 Restricted part 49 Open part 50 Wall body

Claims (3)

Roll mounted on a suction device that sucks liquid to remove, squeeze, and wash liquids such as moisture, oil, or chemical components adhering to a steel plate, non-ferrous metal plate, resin plate, or film-like surface to be cleaned The roll has a roll part, a pedestal, and a fastener, and the pedestal has a main body part in which an opening is formed, and a joint part A and a joint part B connected to both ends of the main body part, the joint portion a and / or the joint portion B has a hollow portion is formed, the hollow portion is Yes in communication with the opening, the outer periphery of the main body portion in communication with the opening, a funnel-shaped at the distal end A hole in which a fluid introduction part is formed is opened, the roll part is formed, the roll part is made of a nonwoven fabric, a hole part formed in the center part, and a side edge part formed on the outer periphery, A plurality of generally annular roll pieces having With the layers, at least one end portion is fixed by the fasteners, rolls, characterized in that the inner diameter of the roll pieces are formed at smaller than the outer diameter of the body portion.   2. The roll having the structure according to claim 1, wherein a screw portion is formed on at least one end portion of the pedestal, and a fastener for the screw portion is fastened to the pedestal by screwing. And roll. The roll according to claim 1 or 2 , driving means for rotationally driving the roll, and a suction device that generates a negative pressure by flowing a compressed fluid from outside and sucks a liquid from the roll by the negative pressure. Having a cleaning device.

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