JP4739109B2 - roll - Google Patents

Description

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

  Various improvements have been made to rolls for removing, squeezing, and cleaning liquids such as moisture, oil, or chemical components adhering to the surface to be cleaned made of steel plates, non-ferrous metal plates, resin plates, or films. , A liquid absorbing roll formed by superposing a large number of disk-like materials made of a fibrous sheet in which a polymer elastic body is filled with a porous structure in a void of a nonwoven fabric in which ultrafine fibers are three-dimensionally entangled, This is disclosed in Japanese Patent Publication No. 61-262586.

  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 this liquid absorption method, are disclosed in Japanese Patent Laid-Open No. 7-120145.

  Also, a shaft body provided with a through hole and a cavity, a roll body having a number of porous holes for capillary action and water absorption provided in the shaft body, and a vacuum connection piping system provided in the communication hole of the shaft body In a draining method for sucking and draining the fluid of the object to be processed by vacuum suction using a liquid suction roll comprising: a water film formed on the inner wall surface of the cavity, a layered water film, a water wall, etc. The drainage function of the high-speed liquid-absorbing roll is designed to restore the drainage function by vacuum suction by breaking the basin with accelerated suction by intermittent forced introduction of external gas and opening the inner wall through-hole. A recovery method and its drainage device are disclosed in Japanese Patent No. 3224461.

Japanese Patent Application Laid-Open No. 61-262586 JP-A-7-120145 Japanese Patent No. 3224461

  For example, the conventional roll has disclosed a technique having the above-described characteristics, but the technique disclosed in Japanese Patent Application Laid-Open No. 61-262586 does not include an external device necessary for liquid absorption. For this reason, the roll part which consists of a nonwoven fabric layer will be in a liquid absorption saturated state gradually. The liquid removal function for rolls that do not have external devices necessary for liquid absorption consists of a dam function that causes liquid to flow away from both ends of the surface to be cleaned by rotating while the roll is under constant pressure, and the roll rotates. In the compression zone compressed by pressure, the liquid absorbed in the gap of the roll part is once discharged to the surface to be cleaned, and then in the open zone where the roll is released from the compression by pressure, the fibrous material forming the nonwoven fabric It is composed of a suction / exhaust function in which the liquid on the surface to be cleaned is sucked up into the roll part by capillary action and released into the gap part of the roll part. The absorption / exhaustion function is manifested by elastic deformation of the polymer elastic body filled in the nonwoven fabric, so that 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, all of the liquid sucked up by the capillary action of the fibers cannot be discharged 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 over a period of time. 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 the technique disclosed in Japanese Patent Laid-Open No. 7-120145, the liquid absorbed in the roll part is discharged to the outside of the nonwoven fabric roll through the through hole, the cavity part, and the through hole by the suction pump. Although the discharged liquid is prevented from flowing into the suction pump device by a filter or the like, a part of the discharged liquid passes through the filter or the like and flows into the suction pump device, and the vacuum suction force gradually decreases. For this reason, it has the subject that it is difficult to maintain a liquid absorption function over a long period of time.

  In the technique disclosed in Japanese Patent No. 3224461, it is necessary to separately provide a spacer and a spacer core in the cavity of the liquid absorption roll, which makes the roll configuration complicated and necessary for sucking the liquid. This requires a suction pump and an air supply machine necessary for introducing the external gas, which increases the capital investment cost and is unsuitable for industrial uses such as rolls.

  The present invention solves the above-mentioned conventional problems, and provides a roll that can quickly and reliably remove, extract, and clean the liquid on the surface to be cleaned over a long period of time, and suppresses the capital investment cost. The purpose is to do.

  In order to solve the above-mentioned conventional problems, the roll of the present invention removes and squeezes liquid such as moisture, oil, or chemical components adhering to the surface to be cleaned made of a steel plate, non-ferrous metal plate, resin plate, or film. In the roll for cleaning, the roll has a roll part and a pedestal, the pedestal has a main body part on which the roll part is formed on an outer peripheral surface, and a joint part A connected to both ends of the main body part, and There is a joint portion B, and an opening portion whose opening area changes from small to large as it approaches the joint portion B side from the joint portion A side so that the fluid penetrates in the direction from the joint portion A to the joint portion B. And a hole communicating with the opening is formed on the outer peripheral surface of the main body. The cross-sectional area of the opening is the smallest on the joint A side and the largest on the joint B side. Configure to be They are are. When fluid is passed through the opening from the joint portion A to the joint portion B as described above, a roll portion is formed on the outer peripheral surface of the main body portion of the pedestal. Since no loss is incurred from the outside, the law of conservation of energy holds that the sum of the potential energy, kinetic energy, and pressure energy of the fluid is always constant at any arbitrary position of the opening. The law of fluid energy conservation in a pipe line such as the opening is generally called Bernoulli's theorem. In the case of the roll, the fluid only penetrates in the horizontal direction from the joint A to the joint B at the opening, and the opening is not formed so that the fluid flows from the upper part to the lower part or from the lower part to the upper part. The potential energy of the fluid is the same at any position of the opening. In addition, the kinetic energy of the fluid is maximized because the flow velocity of the fluid is fastest on the side of the joint A where the sectional area of the opening is the smallest, and the flow velocity of the fluid is large on the side of the joint B where the sectional area of the opening is the largest. It is the smallest because it is the slowest. Therefore, the pressure energy is minimum on the joint portion A side where the kinetic energy is maximum, and is maximum on the joint portion B side where the kinetic energy is minimum. Therefore, when the fluid is passed through from the joint A to the joint B, a negative pressure is generated due to a change in the cross-sectional area in the opening, so that the liquid absorbed in the roll moves from the higher pressure to the lower pressure. Therefore, it will be drawn to the main body of the pedestal, discharged to the opening through the hole formed in the outer peripheral surface of the main body, and together with the fluid passing through the opening from the joint B side to the outside of the roll Released. For this reason, the liquid absorbed in the roll part is always discharged to the outside of the roll, so that the roll part does not become saturated with liquid, and the liquid on the surface to be cleaned can be quickly and reliably over a long period of time. Removed. As described above, a mechanism in which a negative pressure is generated due to a change in cross-sectional area by penetrating a fluid is generally called a Venturi effect.

  Further, in the present invention, in addition to the roll, an external device such as an air supply machine for introducing fluid from the joint part A side is required. However, the liquid absorbed in the roll part is the joint part B as described above. Since the liquid is discharged to the outside of the roll together with the fluid from the side, the liquid does not flow into the external device installed on the joint part A side, and a stable fluid can be supplied. Can be removed.

  Furthermore, the necessary external device is only an air supply device that introduces fluid from the joint portion A side, and it is not necessary to prepare a plurality of external devices, so that the capital investment cost is low.

  The roll of the present invention is formed so that the cross-sectional area of the opening formed in the pedestal changes from small to large as it approaches the joint part B side from the joint part A side, and is installed on the joint part A side. When fluid was passed through from the joint A to the joint B using an external device such as a certain air supply machine, the fluid was absorbed by the roll due to the venturi effect associated with the generation of negative pressure due to the change in the cross-sectional area of the opening. Since the liquid moves from the higher pressure side to the lower pressure side, it will be attracted to the main body portion of the pedestal, and is discharged to the opening portion through the hole formed in the outer peripheral surface of the main body portion, and the opening portion is It is always discharged from the joint B side to the outside of the roll together with the passing fluid. Therefore, the roll part does not become saturated with liquid absorption, and the liquid on the surface to be cleaned can be removed quickly and reliably stably over a long period of time.

  In addition, since the liquid absorbed in the roll part is discharged from the joint part B side to the outside of the roll together with the fluid as described above, the liquid does not flow into the external device installed on the joint part A side. Since the fluid can be stably supplied, the liquid can be removed stably over a long period of time, and the required external device is only an air supply machine that introduces fluid from the joint portion A side. Since there is no need to prepare an external device, the capital investment cost can be reduced.

  The first invention is a roll for removing, squeezing and cleaning liquids such as moisture, oil, or chemical components adhering to a surface to be cleaned comprising a steel plate, a non-ferrous metal plate, a resin plate, or a film. Has a roll part and a pedestal, and the pedestal has a main body part in which the roll part is formed on an outer peripheral surface, a joint part A and a joint part B connected to both ends of the main body part, and the joint part An opening whose opening area changes from small to large as it approaches the joint B side from the joint A so that the fluid penetrates from A to the joint B is formed in the main body. A hole communicating with the opening is formed on the outer peripheral surface of the main body. When fluid is passed through from the joint A to the joint B, negative pressure is generated due to a change in the cross-sectional area of the opening. Venturi effect Since the liquid absorbed in the roll part moves from the higher pressure side to the lower side, it will be attracted to the main body part of the pedestal and opened through the hole formed in the outer peripheral surface of the main body part. It is discharged to the part and is always discharged to the outside of the roll from the joint part B side together with the fluid passing through the opening. Therefore, the roll part does not become saturated with liquid absorption, and the liquid on the surface to be cleaned can be removed quickly and reliably stably over a long period of time.

  Further, in the present invention, in addition to the roll, an external device such as an air supply machine for introducing fluid from the joint part A side is required. However, the liquid absorbed in the roll part is the joint part B as described above. Since the liquid is discharged from the side to the outside of the roll, the liquid does not flow into the external device installed on the joint A side, and the fluid can be stably supplied. Liquid can be removed.

  Furthermore, since the necessary external device is only an air supply machine that introduces fluid from the joint portion A side, it is not necessary to prepare a plurality of external devices, so that the capital investment cost can be suppressed.

  In particular, in the roll of the first invention, the second invention is a diaphragm opening whose opening area changes from large to small as the end of the joint A approaches the end of the opening on the joint A side. Is formed in the joint portion A, and the aperture opening is formed so as to communicate with the aperture, and the kinetic energy of the fluid is maximized at the position where the aperture opening and the aperture are connected. , Pressure energy can be minimized. Therefore, the kinetic energy of the fluid can be gradually increased and the pressure energy can be gradually decreased at the aperture opening, so that the aperture opening and the aperture are connected to each other as compared with the case where the aperture opening is not formed. It is possible to further increase the kinetic energy of the fluid, further reduce the pressure energy, and further increase the negative pressure at the opening. The function of removing the absorbed liquid is greatly improved.

  Even if the kinetic energy of the first fluid is small, the kinetic energy of the fluid can be maximized at the position where the aperture opening and the opening are connected. Since it is not necessary to set the energy to the maximum and eject the fluid, the load on the external device can be reduced.

  According to a third aspect of the invention, in particular, in the rolls of the first and second aspects, a flow passage having an area equal to or larger than the maximum opening area of the opening is formed outside the end of the main body on the joint B side. Therefore, the pressure energy of the fluid outside the end portion of the main body portion on the joint B side does not become lower than the pressure energy in the opening. Therefore, the fluid and the liquid discharged from the outside of the end of the main body on the joint part B side to the outside of the roll are not attracted to the opening, and can be prevented from flowing back to the opening.

  In the fourth invention, in particular, in the rolls of the first to third inventions, at least a part of the flow passage is formed outward in the rotation direction of the roll, and is discharged to the outside of the roll. The fluid and the liquid can be prevented from flowing back to the opening, and the fluid and the liquid can be easily discharged to the outside of the roll.

  The fifth aspect of the invention is the roll of the first to fourth aspects of the invention, in particular, the smaller the ratio of the cross-sectional area of the hole to the area of the wall surface of the opening closer to the joint B side of the opening. Since the negative pressure at the opening gradually increases as it approaches the joint B side of the opening where the pressure energy of the fluid gradually increases, the Venturi effect gradually decreases to the roll part. It is difficult to draw the absorbed liquid to the main body of the pedestal. Therefore, it is difficult for the liquid absorbed by the roll part to be discharged from the hole formed in the outer peripheral surface of the main body part, but the ratio of the cross-sectional area of the hole part to the area of the wall surface of the opening part is determined by the joint of the opening part. By setting it to be larger as it gets closer to the part B side, the liquid that has been actively and effectively absorbed into the roll part on the joint part B side of the opening part where the venturi effect is lowered is opened through the hole part. Can be discharged. For this reason, the function of removing the liquid absorbed in the roll portion is greatly improved.

  According to a sixth invention, in particular, in the rolls of the first to fifth inventions, weight correction means is formed on the roll, and the joint portion B side having a larger sectional area of the opening portion is the joint portion. Since it becomes lighter than the A side, the balance during rotation of the roll can be maintained by performing weight correction on the roll, and the roll can maintain stable rotation over a long period of time.

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

(Example 1)
1 is a front view of a form in which the roll of the present invention is used for removing oil from the surface of a steel sheet, FIG. 2 is a perspective view of the roll piece seen from the front side, FIG. 3 is a cross-sectional view of FIG. FIG. 5 is a side view of FIG. 1, and FIG. 5 is a cross-sectional view of a form in which a roll according to another embodiment of the present invention is used for removing oil from the steel sheet surface.

  1 and 3, the roll 1 includes a pedestal 3, a stopper 4, a plate 5, and a roll portion 2 formed from a plurality of roll pieces 6. The pedestal 3 has a substantially cylindrical shape made of a metal material such as iron, a main body portion 7 on which the roll portion 2 is formed on the outer peripheral surface, a joint portion A8 connected to both ends of the main body portion 7 with bolts 15; There is a joint portion B9, and a balance weight 14 made of a metal material such as iron or lead is attached to the joint portion B9 by welding for the purpose of maintaining the balance when the roll 1 rotates, and the joint portion B side of the roll 1 The weight of is corrected. Further, the roll part 2 is formed by overlapping a plurality of roll pieces 6, and is mounted by being sandwiched by a stopper 4 and a plate 5 from both sides. A snap ring is used for the fastener 4. The main body 7, the joint A8 and the joint B9 can be connected by a method such as welding in addition to the bolt 15 tightening. Further, as a method of attaching the balance weight 14 to the joint portion B9, a method such as bolting may be used in addition to the welding. Furthermore, the weight correction for the roll 1 may be performed by not attaching the balance weight 14 to the joint portion B9 but providing a hole in the joint portion A8 to reduce the weight of the roll 1 on the joint portion A8 side.

  In FIG. 2, the roll piece 6 is formed in a substantially disk-like flat plate shape, a hole portion 21 is formed in the center portion, and an edge portion 22 is formed in the outer peripheral portion. In addition, the roll part 2 is formed from the total number of roll pieces 6 used for the roll 1.

  In FIG. 3, the pedestal 3 has a plurality of hole portions 11 whose hole diameters change from small to large as they approach the joint portion B9 side from the joint portion A8 side on the outer peripheral surface of the main body portion 7, and from the joint portion A8 side. The opening area changes from small to large as it approaches the joint B9 side, and the opening area changes from large to small as the distance from the end of the joint A8 approaches the end of the opening 10 on the joint A8 side. A diaphragm opening 12 is formed, and the diaphragm opening 12 and the opening 10 are formed to communicate with each other. On the other hand, as shown in FIGS. 3 and 4, a flow passage 13 having an area larger than the maximum opening area of the opening 10 is formed on the side of the joint B9 on the outer side of the end of the main body 7 and on the joint B9. In addition, a part of the flow passage 13 is formed outward in the rotation direction of the roll 1, and the joint portion A8 is used by using an air supply machine (not shown) installed on the joint portion A8 side. The fluid penetrates in the direction of the arrow A of the joint portion B9 from the end portion.

  Next, a manufacturing method of the roll 1 will be described. First, the roll piece 6 is punched into a generally disc-like flat plate shape. Next, a plurality of roll pieces 6 punched into a substantially disk-like flat plate shape are overlapped to penetrate the hole 21 through the base 3. And after compressing only the predetermined length with the press machine from the longitudinal direction of the base 3, it clamps with the metal fitting 4 and the plate 5, and is fixed. Next, by leaving it to stand for a predetermined time, the internal stress of the plurality of roll pieces 6 superimposed is made uniform, the edge portion 22 is cut and polished, and the roll portion is formed on the outer peripheral surface of the main body portion 7 of the base 3. 2 is formed.

Next, some methods for manufacturing the material of the roll piece 6 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. To obtain a non-woven fabric. The above manufacturing method is generally called needle punching. The cloth-like body is called a web. The obtained nonwoven fabric is impregnated in a polyurethane solution, and the nonwoven fabric is filled with polyurethane. Next, the non-woven fabric filled with polyurethane is immersed in water, carbon dioxide is injected into the water, and carbonic acid foaming is performed, so that the non-woven fabric and a flat polyurethane made of porous polyurethane having extremely fine bubbles are formed. A double structure is formed, punched into a generally disc shape, and used as a roll piece 6. For the fibers forming the nonwoven fabric, 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 a nonwoven fabric entangled three-dimensionally by needle punching is obtained. To the obtained nonwoven fabric, a polymer elastic body blended with a crosslinking agent is attached using a method such as spraying, dipping, or impregnation, and heated to bond the fibers forming the nonwoven fabric into a flat plate shape. Punched into a shape and used as a roll piece 6. The above manufacturing method is generally called a chemical bond method. For the fibers forming the nonwoven fabric, natural fibers such as cotton, rayon and cellulose, and synthetic resin fibers such as polyester, nylon and acrylic are used alone or in combination. In addition, nitrile rubber, acrylic rubber, styrene rubber, urethane rubber or the like is 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.

  Next, operation | movement and an effect | action of the roll 1 of this invention are demonstrated.

  Rolls 1 are installed in a pair of upper and lower boxes on a box-shaped steel plate washer (not shown), and are driven to rotate by applying a constant pressure such as air pressure or hydraulic pressure by a cylinder or the like. A steel plate with oil on the surface passes through it. At that time, the steel sheet comes into contact with the roll part 2, and the oil content on the steel sheet surface is sucked up by the roll part 2 and released into the gap part of the roll part 2 due to the capillary action of the fibers of the roll piece 6 constituting the roll part 2. Is done.

  In the pedestal 3, a piping system (not shown) is connected to an end of the joint portion A8 from an air supply device installed on the joint portion A8 side, and fluid is ejected in the direction of arrow A by the air supply device. The fluid passes through the aperture opening 12 provided in the joint portion A8, passes through the opening 10 provided in the main body portion 7, and passes outward from the end portion of the main body portion 7 on the joint portion B9 side and to the joint portion B9. It flows out of the roll 1 through the provided flow path 13. The fluid has the maximum kinetic energy and the minimum pressure energy at the position where the throttle opening 12 and the opening 10 communicate with each other, and the kinetic energy gradually decreases as the fluid advances toward the joint B9. Gradually rises. Therefore, the oil component absorbed by the roll part 2 moves from the higher pressure side to the lower side due to the venturi effect accompanying the generation of the negative pressure due to the change in the cross-sectional area of the opening 10. And is discharged to the opening 10 through the hole 11 formed in the outer peripheral surface of the main body 7, and the end portion of the main body 7 on the side of the joint B 9, together with the fluid passing through the opening 10, and the joint It is discharged to the outside of the roll 1 through the flow passage 13 provided in the part B9. The discharged oil is circulated inside the steel plate washer. Therefore, since the oil component absorbed by the roll part 2 is always discharged into the steel plate washing machine outside the roll 1, the roll part 2 is not saturated with liquid absorption, and the oil content on the steel sheet surface for a long period of time. Is removed quickly and reliably.

  The oil absorbed by the roll part 2 is discharged into the steel plate washer outside the roll 1 together with the fluid from the end part of the body part 7 on the joint part B9 side outside and the flow passage 13 provided in the joint part B9. Therefore, oil does not flow into the air supply machine installed on the joint A8 side, and a stable fluid can be supplied, so that oil can be removed stably over a long period of time. .

  Further, the necessary external device is only an air supply machine that introduces fluid from the joint portion A8 side, and it is not necessary to prepare a plurality of external devices, so that the capital investment cost can be suppressed.

  Further, by providing the throttle opening 12 at the joint A8, the kinetic energy of the fluid can be maximized and the pressure energy can be minimized at the position where the throttle opening 12 and the opening 10 are connected. Therefore, the kinetic energy of the fluid can be gradually increased and the pressure energy can be gradually decreased in the diaphragm opening 12, and the diaphragm opening 12 and the opening can be compared with the case where the diaphragm opening 12 is not formed. Since the kinetic energy of the fluid can be further increased at the position where the 10 is connected, the pressure energy can be further decreased and the negative pressure at the opening 10 can be further increased, a further excellent Venturi effect can be expressed. The function of removing the oil absorbed by the roll unit 2 is greatly improved.

  Further, by providing the throttle opening 12 in the joint A8, even if the kinetic energy of the initial fluid is small, the kinetic energy of the fluid can be maximized at the position where the throttle opening 12 and the opening 10 are connected. Therefore, it is not necessary to set the kinetic energy of the fluid to the maximum with the air supply machine and eject the fluid, so that the load on the air supply machine is reduced.

  Further, by forming a flow passage 13 having an area larger than the maximum opening area of the opening 10 in the outer end of the main body 7 on the side of the joint B9 and in the joint B9, the joint B9 of the main body 7 is formed. The pressure energy of the fluid outside the end on the side does not become lower than the pressure energy in the opening 10. Therefore, the fluid and oil released from the outside of the end portion of the main body portion 7 on the side of the joint portion B9 to the outside of the roll 1 are not attracted to the opening portion 10 and are prevented from flowing back to the opening portion 10. can do.

  Furthermore, by forming a part of the flow passage 13 outward in the rotation direction of the roll 1, it is possible to prevent the fluid discharged to the outside of the roll 1 and the oil from flowing backward to the opening 10. In addition, the fluid and oil are easily discharged to the outside of the roll 1.

  Further, the pressure energy of the fluid gradually increases by forming a plurality of hole portions 11 whose hole diameters change from small to large as they approach the joint portion B9 side from the joint portion A8 side on the outer peripheral surface of the main body portion 7. Even on the joint B9 side of the opening 10 where the Venturi effect is reduced, the oil absorbed by the roll 2 is positively and effectively discharged into the opening 10 through the hole 11.

  Further, by attaching the balance weight 14 to the joint portion B9, the weight of the joint portion B9 can be corrected so that the sectional area of the opening is large and the weight is lighter than that of the joint portion A8. Balance can be maintained.

  Next, a roll according to another embodiment of the present invention will be described with reference to FIG.

  In FIG. 5, a roll 31 has a roll portion 32 and a pedestal 33 made of a metal material such as iron, and the roll portion 32 is a roll piece made of a plurality of non-woven fabrics on the outer peripheral surface of the main body portion 37 of the pedestal 33. 36 are laminated, and both end portions are formed by being clamped by a metal fitting 34 and a plate 35. The pedestal 33 has a substantially cylindrical shape, the roll portion 32 is formed on the outer peripheral surface, a main body portion 37 having a plurality of hole portions 41, and a joint portion connected to both ends of the main body portion 37 by bolts 45 tightening. It is comprised from A38 and the joint part B39. Further, the opening 40 has an opening area that changes from small to large as it approaches the joint B39 from the joint A38 side, and the opening closes from the end of the joint A38 toward the end of the opening 40 on the joint A38 side. A diaphragm opening 42 whose area changes from large to small is formed, and the diaphragm opening 42 and the opening 40 are formed to communicate with each other. On the other hand, on the side of the joint portion B39, a flow passage 43 having an area equal to or larger than the maximum opening area of the opening 40 is formed on the outer side of the end portion of the main body portion 37 and on the joint portion B39. A part of the roll 31 is formed on the outer side in the rotation direction, and an arrow from the end of the joint A38 to the arrow of the joint B39 using an air supply machine (not shown) installed on the joint A38 side. The fluid penetrates in the direction B. In addition, a balance weight 44 made of a metal material such as iron or lead is attached to the joint portion B39 by welding in order to maintain a balance when the roll 31 rotates.

  The roll 31 has a hole 41 formed on the outer peripheral surface of the main body 37 of the pedestal 33 such that the hole diameter approaches the joint B9 side from the joint A8 side, as the hole 11 of the roll 1 decreases. In other words, the hole diameters of the hole portions 41 are all the same, but the smaller the ratio of the cross-sectional area of the hole portion 41 to the area of the wall surface of the opening portion 40 the closer to the joint portion B39 side of the opening portion 40 is. The set number of the hole portions 41 is configured to increase as the distance from the joint portion B39 increases.

  The operation and action of the roll 31 in another embodiment of the present invention are as follows.

  The roll 31 has an air supply machine installed on the joint part A38 side, and fluid is ejected in the direction of arrow B, so that the oil absorbed in the roll part 32 is moved to the main body part 37 side due to the venturi effect. Pulled, discharged to the opening 40 through the hole 41, and together with the fluid passing through the opening 40, the outer side of the end of the main body 37 and the outside of the roll 31 from the flow passage 43 formed in the joint B 39. Always released. Therefore, the roll part 32 is not saturated with liquid absorption, and oil on the surface of the steel sheet can be removed quickly and reliably stably over a long period of time.

  Further, the ratio of the cross-sectional area of the hole 41 to the area of the wall surface of the opening 40 changes from small to large as it approaches the joint B39 side of the opening 40, so that the pressure energy of the fluid gradually increases, and the venturi Even on the joint portion B39 side of the opening 40 where the effect is reduced, the oil absorbed by the roll portion 32 can be positively and effectively discharged to the opening 40 through the hole 41.

  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 surface to be cleaned made of a steel plate, non-ferrous metal plate, resin plate, or film. It can be used widely and suitably as a roll that requires high durability.

The front view of the form which used the roll of the present invention for oil removal of the steel plate surface A perspective view of the roll piece seen from the front side Sectional view of FIG. Side view of FIG. Sectional drawing of the form which used the roll in other embodiment of this invention for the oil content removal for the steel plate surface

Explanation of symbols

1, 31 Roll 2, 32 Roll part 3, 33 Base 4, 34 Fastener 5, 35 Plate 6, 36 Roll piece 7, 37 Main body part 8, 38 Joint part A
9, 39 Joint B
10, 40 Opening portion 11, 41 Hole portion 12, 42 Restriction opening portion 13, 43 Flow passage 14, 44 Balance weight 15, 45 Bolt 21 Hole portion 22 Edge portion

Claims (6)

  In a roll for removing, squeezing, and cleaning liquids such as moisture, oil, or chemical components adhering to the surface to be cleaned made of a steel plate, non-ferrous metal plate, resin plate, or film, the roll has a roll portion and a pedestal. The pedestal includes a main body portion on which an outer peripheral surface is formed with the roll portion, a joint portion A and a joint portion B connected to both ends of the main body portion, and the joint portion A to the joint portion B. An opening whose opening area changes from small to large as it approaches the joint B side from the joint A side is formed in the main body so as to penetrate the fluid in the direction of, and communicates with the opening The roll characterized by the hole part being formed in the outer peripheral surface of the said main-body part.   The roll having the configuration according to claim 1, wherein the aperture portion whose opening area changes from large to small as the end portion of the joint portion A approaches the end portion of the opening portion on the joint portion A side is the joint portion A. And the aperture opening is formed to communicate with the opening.   The roll having the configuration according to claim 1 or 2, wherein a flow passage having an area equal to or larger than a maximum opening area of the opening portion is formed outside the end portion of the main body portion on the joint portion B side. And roll.   The roll which consists of a structure of any one of Claim 1 to 3 WHEREIN: At least one part of the said flow path is formed in the outward of the rotation direction of the said roll, The roll characterized by the above-mentioned.   The roll which consists of a structure of any one of Claim 1 to 4 WHEREIN: The ratio of the cross-sectional area of the said hole part with respect to the area of the wall surface of the said opening part is so small that it approaches the joint part B side of the said opening part. A roll characterized by significant changes.   The roll which consists of a structure of any one of Claim 1 to 5 WHEREIN: The weight correction | amendment means is formed with respect to the said roll, The roll characterized by the above-mentioned.

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