JP2010179270A - Washing device of oil mist electric precipitator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a structure for making the inside of the washing device of an oil mist electric precipitator watertight is required in order to wash the pole plate of the oil mist electric precipitator and the amount of a waste solution after washing is increased because a much washing solution is required in order to fill the inside of the washing device made watertight. <P>SOLUTION: The washing device of the oil mist electric precipitator is provided with a washing means constituted of a rotary hub 4 rotated centering around washing piping 5, a plurality of the hollow arms 6 radially provided to the outer peripheral part of the rotary hub 4 and at least one spray nozzle 7 provided to each of the hollow arms 6. By the washing means, the washing solution fed from the washing piping 5 is passed through the rotary hub 4 and the hollow arms 6, the rotary hub 4 can be rotated by utilizing the driving force of the washing solution ejected from the spray nozzle 7 and the washing and removing capacity of the floating particles adsorbed on the pole plate 3 is enhanced. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is an electrostatic precipitator that collects suspended particles such as dust or oil mist used in machine factories and foundries, etc., as a cleaning means for an electrode plate or a filter in an apparatus to which the suspended particles adhere. The present invention relates to a structure for performing cleaning by spraying a cleaning liquid or the like from a cleaning nozzle and an injection unit.

  Conventionally, this type of electrostatic precipitator electrode plate cleaning method is a method in which the interior of the electrostatic precipitator unit composed of a charging unit and a precipitator unit is washed with a liquid that can be opened and closed by water-tightly closing the front and rear of the ventilation port. A structure having a structure cleaning liquid discharge means for cleaning the electrode plate by vibrating or flowing the cleaning liquid and discharging the waste liquid after cleaning is well known (see, for example, Patent Document 1).

Further, in the method of arranging the spray nozzle and cleaning the electrode plate, a plurality of vertical water pipes are arranged at intervals along the transverse direction of the gas flow path so as to face the side edge of the dust collecting electrode unit. There is also a method of cleaning by attaching a rotary sprayer to the water pipe. (For example, refer to Patent Document 2).
JP-A-6-15197 Japanese Patent Laid-Open No. 10-165840

  In such a conventional plate cleaning method for an electrostatic precipitator, it is necessary to keep the airtightness around the ventilation port in order to clean the electrostatic precipitator unit, but it maintains a structure that does not cause water leakage. There are challenges. In addition, there is a problem that it is necessary to use a lot of water to fill the interior with water in order to clean the electrostatic precipitator unit, and it has a simple structure that is unlikely to cause water leakage and has a high cleaning ability. Therefore, it is also required to be a cleaning method that reduces the amount of water used from the viewpoint of environment and economy. Further, in the method of cleaning by attaching a rotary sprayer to the vertical water pipe, the vertical water pipe is arranged at intervals along the transverse direction of the gas flow channel so as to face the side edge of the dust collecting electrode unit. Since the vertical water pipe and the rotary sprayer are arranged in the gas flow path, the pressure loss in the flow path increases, and because the rotary sprayer is placed in the gas flow path, the adhesion of suspended particles and the like increases. There is a problem, and reduction of pressure loss in the flow path and improvement of maintainability are required.

  The present invention solves such a conventional problem, can provide a cleaning method that secures high cleaning ability and reduces the amount of water used for cleaning, and as a cleaning means. The purpose is to provide an electrostatic precipitator cleaning device that can reduce the pressure loss in the flow path and improve the maintainability by arranging the spray nozzles together on the upper plate of the electrostatic precipitator. It is said.

  In order to achieve the above object, the cleaning device for an electrostatic precipitator of the present invention electrically adsorbs floating particles charged in the band electrode unit, which is charged with floating particles such as dust or oil mist. A dust collecting pole part to be collected, a cleaning means for cleaning the suspended electrode adsorbed on the electrode plate of the band electrode part or / and the dust collecting pole part, and a transport means for transporting a cleaning liquid used for cleaning. In the electric dust collector, the cleaning means includes a rotating hub that rotates around a pipe provided in a cleaning pipe that conveys the cleaning liquid, and a plurality of hollow holes provided radially on the outer periphery of the rotating hub. An arm and at least one spray nozzle provided on the hollow arm, the rotation surface of the rotary hub is provided so as to be orthogonal to the electrode plate surface, and the spray direction of the spray nozzle is: The rotation The circumferential direction around the rotation axis of the hollow arm, using the thrust injected from the spray nozzle toward the electrode plate to be cleaned with respect to the rotating surface formed when the hollow arm rotates The rotating hub rotates.

  By this means, the propulsive force generated when spraying the cleaning liquid from the spray nozzle can be used as the rotational force for rotating the rotating hub, and the cleaning of floating particles adhering to the electrode plate etc. can be cleaned with a single spray nozzle. A cleaning device for an electrostatic precipitator that can provide cleaning means that can be provided is obtained.

  Another means is that the cleaning means includes a rotating hub that rotates around a pipe provided in a cleaning pipe that conveys the cleaning liquid, and a plurality of hollow arms that are provided radially on the outer periphery of the rotating hub, It is composed of at least one spray nozzle provided on the hollow arm, and the rotation surface of the rotary hub is provided so as to be orthogonal to the electrode plate surface, and the spray direction of the spray nozzle is the rotation hub The rotating hub has a circumferential direction around the rotation axis, and is directed toward the electrode plate side to be cleaned with respect to the rotating surface formed when the hollow arm rotates, and on the upper side, the lower side, or both sides of the rotating hub. One or a plurality of cleaning liquid injection holes are provided in the cleaning pipe so that an impeller having a single blade is fixed so as to rotate synchronously with the rotating hub, and the blade of the impeller receives the cleaning liquid and rotates. Providing the times Hub is obtained is characterized in that the structure to rotate.

  By this means, in addition to the propulsive force generated by spraying the cleaning liquid from the spray nozzle, the rotational force received by the impeller can also be applied to the rotating hub, so that cleaning of suspended particles adhering to the electrode plate etc. can be performed in a larger range with one spray nozzle. In addition, the cleaning device of the electric dust collector can provide a cleaning means that can improve the cleaning performance when the cleaning liquid or the like sprayed from the spray nozzle strongly hits the electrode plate or the like due to an increase in rotational force. Is obtained.

  Another means is that the cleaning means includes a rotating hub that rotates around a pipe provided in a cleaning pipe that conveys the cleaning liquid, and a plurality of hollow arms that are provided radially on the outer periphery of the rotating hub, It is composed of at least one spray nozzle provided on the hollow arm, and the rotation surface of the rotary hub is provided so as to be orthogonal to the electrode plate surface, and the spray direction of the spray nozzle is the rotation hub A plurality of blades on the outer peripheral portion inside the rotating hub toward the electrode plate side to be cleaned with respect to the rotating surface formed when the hollow arm rotates. The cleaning liquid conveyed from the cleaning pipe hits the blades inside the rotary hub to rotate the rotary hub, and then passes through the hollow arm and sprays from the spray nozzle. It is obtained by it said.

  By this means, in addition to the propulsive force generated by spraying the cleaning liquid from the spray nozzle, the force received by the impeller provided inside the rotary hub can also be used as the rotational force. It is possible to provide a cleaning means that can clean a larger range, and that can improve the cleaning ability when the cleaning liquid or the like sprayed from the spray nozzle strongly hits the electrode plate or the like by increasing the rotational force. A dust collector cleaning device is obtained.

  Another means is characterized in that the spray nozzle has an injection port directed toward the rotation direction of the rotary hub.

  This means that the cleaning liquid sprayed from the spray nozzle is rotated in the same direction as that of the cleaning liquid, so that the collision speed of the cleaning liquid hitting the electrode plate or the like is increased and the cleaning means capable of improving the cleaning effect can be provided. A duster cleaning device is obtained.

  According to another aspect of the invention, the rotating hub is disposed above the band electrode part and / or the dust collecting pole part and rotates horizontally, and the spray nozzle directs the injection direction obliquely downward. It is characterized by.

  By this means, it is possible to arrange the rotating hub at a position that suppresses an increase in pressure loss in the gas flow path, and since the cleaning liquid or the like is sprayed obliquely downward from the spray nozzle, it collides with the electrode plate surface. A cleaning device for an electrostatic precipitator capable of providing a cleaning means that can efficiently remove the adhering suspended particles and the like by increasing the cleaning liquid and the like can be obtained.

  Another means is that the rotary hub is provided with a through hole in the center and is rotatably inserted into the cleaning pipe, and the diameter of the lower through hole is larger than the diameter of the upper through hole. It is characterized by.

  By this means, foreign substances that enter the cleaning hub inserted into the cleaning pipe and cause contamination of the pipe can be ejected out of the pipe from the gap on the large hole diameter side. Therefore, it is possible to obtain a cleaning device for an electrostatic precipitator that can provide a cleaning means that can reduce the occurrence of maintenance and reduce the frequency of maintenance.

  According to another means, the rotating hub is provided with a through hole in a central portion thereof and is rotatably inserted into the cleaning pipe, the hole diameter of the upper through hole is made equal to the hole diameter of the lower through hole, and the rotation hub is rotated. A drain hole is provided at the end of the cleaning pipe on the lower surface of the hub.

  By this means, foreign substances that enter the cleaning hub inserted into the cleaning pipe and cause clogging of the pipe can be ejected out of the pipe through one or more holes provided on the lower surface of the rotary hub. By doing so, it is possible to obtain a cleaning device for an electrostatic precipitator that can provide a cleaning means that suppresses the occurrence of clogging due to foreign substances and the like and enables the maintenance frequency to be reduced.

  Another means is that the rotating hub is slidable in the direction of the rotation axis.

  When the rotary hub performs rotary cleaning by this means, the rotary hub can be lifted from the holding member by the spraying force from the spray nozzle, and the frictional force generated by the rotary hub and the holding member during rotation is reduced. Thus, a cleaning device for an electrostatic precipitator capable of providing a cleaning means that can be provided is obtained.

  Further, the other means is provided with a disc-shaped holding member for the rotating hub in the cleaning pipe, and holds the rotating hub on the upper side of the holding member, and the contact surface between the rotating hub and the holding member is provided. It is characterized by having a concavo-convex shape on one side or both sides.

  By this means, it is possible to reduce the contact area between the rotating hub and the holding member, and it is possible to suppress the rotation failure of the rotating hub due to occurrence of sticking or the like on the contact surface before the next cleaning operation is performed. Thus, a cleaning device for an electrostatic precipitator capable of providing a cleaning means is obtained.

  Another means is that a plurality of the spray nozzles are attached at different angles in one hollow arm.

  By changing the angle of the spray nozzle attached to the hollow arm by this means according to the attachment position from the rotation axis, and adjusting the relative speed of the cleaning liquid or the like that collides with the electrode plate or the like by the rotation, the cleaning effect varies. Thus, a cleaning device for an electrostatic precipitator that can provide a cleaning means that can suppress the above is obtained.

  Another means is characterized in that a plurality of the rotating hubs are provided in the cleaning pipe.

  Provided with this means is a cleaning means capable of cleaning and removing suspended particles adsorbed on the electrode plate even when the electrostatic precipitator units are arranged in multiple stages on a large apparatus with a large processing air volume. An electrostatic precipitator cleaning device that can be obtained is obtained.

  According to the present invention, there is provided a rotary hub capable of rotating around a pipe as a cleaning side terminal portion of a cleaning pipe for transporting a cleaning liquid as a cleaning means for cleaning a plurality of electrode plates constituting a band electrode section or a collecting pole section. Provided, a plurality of hollow arms are arranged on the outer periphery of the rotating hub, spray nozzles are attached to the hollow arms, and the rotating hub rotates using the thrust sprayed from the spray nozzle. Therefore, the propulsive force generated when spraying the cleaning liquid from the spray nozzle can be used as the rotational force for rotating the rotating hub, and the cleaning of floating particles adhering to the electrode plate etc. can be performed in a larger range with one spray nozzle. It is possible to provide a cleaning device for an electrostatic precipitator that has an effect of cleaning.

  In addition, by providing an impeller with a plurality of blades on the upper side, lower side or both sides of the rotating hub, or by providing blades inside the rotating hub, the rotating hub can be rotated when the cleaning liquid hits the blades. A single spray nozzle can cover a larger cleaning range for cleaning suspended particles adhering to the electrode plate from the spray nozzle attached to the hollow arm provided on the outer periphery of the rotating hub. It is possible to provide a cleaning device for an electrostatic precipitator that has an effect of improving the cleaning capability because the cleaning liquid or the like sprayed from the nozzle strongly hits the electrode plate or the like.

  In addition, by providing a clearance or a hole that allows the cleaning liquid to be discharged at the fitting part of the cleaning pipe and the rotating hub or the lower surface of the rotating hub, foreign substances in the cleaning pipe can be ejected out of the pipe. It is possible to provide a cleaning device for an electrostatic precipitator that is effective in reducing the amount of waste.

  In addition, the rotating hub can be cleaned by rotating the fitting dimension on the cleaning pipe side longer than the fitting dimension on the rotating hub side so that the rotating hub can slide in the direction of the rotation axis. Providing a cleaning device for an electrostatic precipitator that can float from the holding member due to the spraying force from the spray nozzle during the operation, and can reduce the frictional force during rotation between the rotating hub and the holding member. it can.

  In addition, by providing the contact surface between the rotating hub and the holding member with an uneven shape, it is possible to reduce the contact area between the rotating hub and the holding member, such as fixing on the contact surface when the cleaning interval is increased. It is possible to provide a cleaning device for an electrostatic precipitator that is effective in suppressing generation.

  In addition, by changing the angle of the spray nozzle attached to the hollow arm for each attachment position from the rotation axis, it becomes possible to adjust the relative speed of the cleaning liquid that collides with the electrode plate etc. in a well-balanced manner, resulting in variations in the cleaning effect. Therefore, it is possible to provide a cleaning device for an electrostatic precipitator having an effect of suppressing the above.

  In addition, the spray nozzle attached to the hollow arm is directed to the rotation direction of the rotary hub, the spray nozzle is attached to the hollow arm, and a plurality of hollow arms with the spray nozzle attached to the outer periphery of the rotary hub. With this arrangement, since the rotation direction is the same as the cleaning liquid sprayed from the spray nozzle, the collision speed of the cleaning liquid hitting the electrode plate can be increased, and the cleaning effect can be improved. A cleaning device for a dust collector can be provided.

  In addition, by providing a plurality of rotating hubs equipped with spray nozzles and hollow arms in the cleaning pipe, it is possible to provide a cleaning device for an electrostatic precipitator that can be used for a large amount of processing air.

  Hereinafter, embodiments of a cleaning device for an oil mist electrostatic precipitator according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view schematically showing the structure of an oil mist electrostatic precipitator cleaning device according to an embodiment of the present invention. FIG. 2 is an oil mist electrostatic precipitator cleaning device according to a second embodiment of the present invention. FIG. 3 is a front view of the cleaning structure of the oil mist electrostatic precipitator showing the mounting angle of the spray nozzle, and FIG. 3 shows the impeller on the rotating hub of the cleaning device of the oil mist electrostatic precipitator according to the third embodiment of the present invention. FIG. 4 is a partial perspective view of the cleaning device of the oil mist electrostatic precipitator showing the arrangement, and FIG. 4 includes an impeller inside the rotating hub of the cleaning device of the oil mist electrostatic precipitator according to the fourth embodiment of the present invention. 5 is a partial cross-sectional view of the rotating hub structure of the oil mist electrostatic precipitator, FIG. 5 is a partial cross-sectional view showing the structure of the rotating hub of the cleaning apparatus for the oil mist electrostatic precipitator according to the second embodiment of the present invention, Is the oil of the fifth embodiment of the present invention FIG. 7 is a partial perspective view showing the outline of the structure of the cleaning device of the oil mist electrostatic precipitator showing the spray nozzle arrangement of the cleaning device of the strike electrostatic precipitator, and FIG. 7 is an oil mist collector according to the sixth embodiment of the present invention. It is a perspective view which shows the outline | summary of the washing | cleaning structure of the oil mist electric dust collector which loaded the dust machine in multiple stages.

(Embodiment 1)
As shown in FIG. 1, the oil mist electrostatic precipitator according to the first embodiment of the present invention is charged by a band electrode unit 1 that charges floating particles such as dust and oil mist, and the band electrode unit 1. It consists of a dust collection pole part 2 that adsorbs and collects suspended particles. The dust collecting pole portion 2 may be composed of a plurality of stages. The band electrode part 1 and the dust collecting pole part 2 are composed of a plurality of electrode plates 3. A rotating hub 4 for injecting cleaning liquid or water / warm water is provided at the upper part of the band electrode portion 1 and the dust collecting pole portion 2 so that the end portion of the cleaning pipe 5 can rotate around the pipe. A plurality of hollow arms 6 are arranged radially from the outer periphery of the rotating hub 4, and a plurality of spray nozzles 7 are attached to the hollow arms 6, and cleaning liquid or water / hot water is supplied from the spray nozzles 7. Be injected. In the lower part of the apparatus, there is provided a water storage tank 8 for storing a cleaning liquid used for cleaning or water / hot water. A pipe is connected to the water storage tank 8 and is connected to a valve 10 for controlling the cleaning liquid flowing through the pipe via a pump 9 and then connected to the rotating hub 4.

  As shown in FIG. 2, the rotary hub 4 is provided with a through hole (not shown in FIG. 2) at the center, and is inserted into the cleaning pipe 5 from the end of the pipe. The cleaning pipe 5 is provided with a disk-like holding member 11 on the lower side of the rotating hub 4 so as to prevent the rotating hub 4 from dropping and dropping. Further, a plurality of hollow arms 6 (two in the present embodiment) are attached to the rotating hub 4 radially with the cleaning pipe 5 as a central axis. A spray nozzle 7 is attached to the hollow arm 6, and the fluid ejection port is disposed so as to spray toward the electrode plate 3 constituting the band electrode portion 1 and the dust collecting pole portion 2. The fluid to be ejected is ejected in a state having a predetermined angle. The spray nozzle 7 is mounted such that the angle α between the rotation surface formed when the hollow arm 6 rotates and the fluid ejection port center of the spray nozzle 7 is 20 to 70 °. This attachment angle can be adjusted, whereby the range in which the fluid ejected by the spray nozzle 7 cleans the electrode plate 3 can be arbitrarily changed. In the present embodiment, the spray shape of the spray nozzle 7 is a full cone type, but the same effect can be obtained even if another type is used.

  When the electrostatic precipitator having such a configuration is operated, suspended particles adhere to the electrode plate 3. Since the dust collection efficiency decreases when the suspended particles adhere, cleaning is necessary. When cleaning, the pump 9 is operated, and the cleaning liquid (or water / warm water) in the water storage tank 8 is sent to the rotating hub 4. The sent cleaning liquid (or water / warm water) is rotated around the cleaning pipe 5 by the thrust force sprayed from the spray nozzle 7 toward the electrode plate 3, and the suspended particles adhering to the electrode plate 3 are removed. It will be washed away. The spray nozzle 7 can also be used as an air blow for blowing off the water droplets adhering to the electrode plate after spraying the cleaning liquid (or water / warm water). Further, the cleaning liquid (or water / warm water) sprayed from the spray nozzle 7 flows down while cleaning the electrode plate 3, is stored again in the water storage tank 8, and is recirculated by the pump 9.

  According to the above configuration, since the cleaning liquid (or water / warm water) stored in the water storage tank 8 is reused by being circulated by the pump 9, the amount of waste liquid generated by cleaning the electrode plate 3 can be reduced. effective.

  In addition, since the cleaning liquid (or water / warm water) sprayed from the spray nozzle 7 is sprayed while rotating from above the electrode plate 3, the cleaning range per spray nozzle 7 can be widened, so that the spray nozzle 7 can be used in less quantity, and cleaning can be performed efficiently.

(Embodiment 2)
As shown in FIG. 3, the electrostatic precipitator of the second embodiment is fixed so that an impeller 13 having a plurality of blades 12 arranged in the circumferential direction on the upper portion of the rotating hub 4 rotates synchronously. The cleaning liquid (or water / hot water) is arranged to be jetted toward the impeller 13 from one or a plurality of injection holes 14 provided on the outer peripheral portion of the cleaning pipe 5. With this configuration, the cleaning hub (or water / warm water) is sprayed from the spray nozzle 7 while the rotating hub 4 rotates, and the cleaning range per spray nozzle 7 can be widened, thereby reducing the number of spray nozzles 7 used. In this state, the electrode plate 3 can be efficiently cleaned.

  In FIG. 4, the impeller 13 is not attached to the rotating hub 4, but a plurality of blades 12 are arranged in the circumferential direction on the outer peripheral portion inside the rotating hub 4, so that the inside of the rotating hub 4 and the cleaning pipe 5 are arranged. The cleaning liquid (or water / warm water) sprayed from one or a plurality of spray holes 14 provided on the outer periphery of the nozzle is disposed so as to hit the blades 12. With this configuration, the rotating hub 4 rotates, and after passing through the hollow pipe provided on the outer periphery thereof, the electrode plate 3 is washed from the spray nozzle 7 so that the impeller 13 is attached to the rotating hub 4. It is also possible to reduce the size of the apparatus by providing blades inside the rotating hub 4.

  Further, as shown in FIG. 5, the rotating hub 4 is configured such that the diameter of the lower through hole 16 is larger than the upper through hole 15 in the fitting portion between the cleaning pipe 5 and the rotating hub 4. With this configuration, foreign matter or the like mixed into the cleaning agent (or water / warm water) flowing through the cleaning pipe 5 and causing clogging of the pipe can be ejected from the gap on the large hole diameter side, that is, the lower through hole 16 to the outside of the pipe. As a result, the occurrence of clogging due to foreign matter or the like is suppressed, and the maintenance frequency can be reduced.

  Further, a drain hole 17 is provided on the lower surface of the rotating hub 4 so that the cleaning liquid can be discharged in a contact surface with the holding member 11 attached to the terminal portion of the cleaning pipe 5. The drain hole 17 allows foreign matters mixed in the cleaning agent flowing inside the rotary hub 4 to be ejected from the drain hole 17 to the outside of the pipe.

  Further, the size of the fitting portion of the cleaning pipe 5 is made longer than the size of the fitting portion of the rotating hub 4 in the direction of the rotation axis so that the rotation hub 4 can slide in the direction of the rotation axis. With this configuration, when the rotating hub 4 performs rotational cleaning, the rotating hub 4 can be lifted from the holding member 11 by the spraying force from the spray nozzle 7, and is generated at the time of rotation due to the contact between the rotating hub 4 and the holding member 11. It is possible to reduce the friction force.

  In addition, the surface where the holding member 11 comes into contact with the rotating hub 4 is provided with a concavo-convex shape 18 made up of a plurality of concentric circles around the rotation axis. With this configuration, the contact area between the rotating hub 4 and the holding member 11 is reduced, sticking that occurs on the contact surface until the next cleaning operation is suppressed, and cleaning performance is deteriorated due to rotation failure of the rotating hub 4. Can be suppressed. In the present embodiment, the concave / convex shape 18 is provided in the holding member 11, but the same effect can be obtained even if it is provided in the rotary hub 4 side or both members.

(Embodiment 3)
In the electric dust collector of the third embodiment, as shown in FIG. 6, a plurality of spray nozzles 7 are formed on the hollow arm 6 when the hollow arm 6 rotates at any position from the rotation axis. The angle between the rotation surface and the fluid ejection port center of the spray nozzle 7 is arranged so as to be β1, β2 (β1 <β2) from a position close to the rotation axis. With this configuration, the relative speed of the cleaning liquid (or water / warm water) that collides with the electrode plate 3 can be adjusted in a well-balanced manner, and the effect of suppressing variation in the cleaning effect can be obtained.

  In the present embodiment, the number of spray nozzles 7 attached to one hollow arm 6 is two, but the same effect can be obtained even if three or more spray nozzles 7 are attached.

  In this embodiment, the spray nozzle 7 attached to the hollow arm 6 is attached with the fluid nozzle of the spray nozzle 7 directed toward the rotation direction of the rotary hub 4, and the spray nozzle 7 is attached to the hollow arm 6 at an arbitrary angle. The hollow arm 6 to which the spray nozzle 7 is attached is provided on the outer peripheral portion of the rotating hub 4. According to such a configuration, the cleaning liquid sprayed from the spray nozzle 7 and the rotation direction are the same direction, so that the collision speed of the cleaning liquid impinging on the electrode plate 3 can be increased, and the cleaning effect can be improved. Is obtained.

(Embodiment 4)
As shown in FIG. 7, the electrostatic precipitator of the fourth embodiment has the spray electrode 7 provided in the belt electrode portion 1, the dust collecting pole portion 2, and the rotating hub 4 arranged in two upper and lower stages. The band electrode part 1 and the dust collecting pole part 2 arranged in the upper stage are cleaned by the spray nozzle 7 provided on the upper side of the upper stage, and the band electrode part 1 and the dust collecting pole part 2 arranged in the lower stage are sprayed on the upper side of the lower stage. By cleaning with the nozzle 7, the effect of cleaning each electrode plate 3 can be obtained even in a large apparatus having a large amount of dust or oil mist.

  In the present invention, as the electrode cleaning method of the electrostatic precipitator, the fluid sprayed from the spray nozzle is water or warm water for washing away the washing liquid and the washing liquid. it can.

The perspective view which shows the outline | summary of the washing | cleaning apparatus structure of the oil mist electric dust collector of Embodiment 1 of this invention The front view which showed the attachment angle of the spray nozzle of the washing | cleaning apparatus of the oil mist electric dust collector of Embodiment 1 of this invention The partial perspective view of the rotation hub structure which showed arrangement | positioning of an impeller on the rotation hub of the washing apparatus of the oil mist electric dust collector of Embodiment 2 of this invention The fragmentary sectional view of the rotation hub structure which provided the impeller inside the rotation hub of the washing | cleaning apparatus of the oil mist electric dust collector of Embodiment 2 of this invention The fragmentary sectional view which shows the structure of the rotation hub of the washing | cleaning apparatus of the oil mist electric dust collector of Embodiment 2 of this invention The partial perspective view which showed the spray nozzle arrangement | positioning of the washing | cleaning apparatus of the oil mist electric dust collector of Embodiment 3 of this invention The perspective view which loaded the oil mist electric dust collector of Embodiment 4 of this invention in multiple stages

DESCRIPTION OF SYMBOLS 1 Band electrode part 2 Dust collecting pole part 3 Electrode plate 4 Rotating hub 4a Rotating hub 5 Washing piping 6 Hollow arm 7 Spray nozzle 8 Water tank 9 Pump 10 Valve 11 Holding member 12 Blade 13 Impeller 14 Injection hole 15 Upper through-hole 16 Lower through hole 17 Drain hole 18 Uneven shape

Claims (11)

A band electrode portion for charging floating particles such as dust or oil mist, a dust collecting electrode portion for electrically adsorbing and collecting floating particles charged in the band electrode portion, and the band electrode portion, and / or In the electric dust collector comprising a cleaning means for cleaning the suspended particles adsorbed on the electrode plate of the dust collecting pole portion and a transport means for transporting a cleaning liquid used for cleaning, the cleaning means is a cleaning for transporting the cleaning liquid. A rotary hub that rotates around a pipe provided in the pipe, a plurality of hollow arms provided radially on the outer periphery of the rotary hub, and at least one spray nozzle provided in the hollow arm A rotating surface of the rotating hub is provided so as to be orthogonal to the electrode plate surface, and an injection direction of the spray nozzle is a circumferential direction around a rotating shaft of the rotating hub, and the hollow arm Rotate An electrostatic precipitator having a structure in which the rotating hub rotates using a thrust sprayed from the spray nozzle toward the electrode plate to be cleaned with respect to the rotating surface formed at the time Cleaning device. A band electrode portion for charging floating particles such as dust or oil mist, a dust collecting electrode portion for electrically adsorbing and collecting floating particles charged in the band electrode portion, and the band electrode portion, and / or In the electric dust collector comprising a cleaning means for cleaning the suspended particles adsorbed on the electrode plate of the dust collecting pole portion and a transport means for transporting a cleaning liquid used for cleaning, the cleaning means is a cleaning for transporting the cleaning liquid. A rotary hub that rotates around a pipe provided in the pipe, a plurality of hollow arms provided radially on the outer periphery of the rotary hub, and at least one spray nozzle provided in the hollow arm A rotating surface of the rotating hub is provided so as to be orthogonal to the electrode plate surface, and an injection direction of the spray nozzle is a circumferential direction around a rotating shaft of the rotating hub, and the hollow arm Rotate An impeller having a plurality of blades on the upper side, the lower side, or both sides of the rotating hub is rotated synchronously with the rotating hub toward the electrode plate to be cleaned with respect to the rotating surface formed at the time Electricity characterized in that one or a plurality of cleaning liquid injection holes are provided in the cleaning pipe so that the blades of the impeller rotate by receiving the cleaning liquid, and the rotating hub rotates. Dust collector cleaning device. A band electrode portion for charging floating particles such as dust or oil mist, a dust collecting electrode portion for electrically adsorbing and collecting floating particles charged in the band electrode portion, and the band electrode portion, and / or In the electric dust collector comprising a cleaning means for cleaning the suspended particles adsorbed on the electrode plate of the dust collecting pole portion and a transport means for transporting a cleaning liquid used for cleaning, the cleaning means is a cleaning for transporting the cleaning liquid. A rotary hub that rotates around a pipe provided in the pipe, a plurality of hollow arms provided radially on the outer periphery of the rotary hub, and at least one spray nozzle provided in the hollow arm A rotating surface of the rotating hub is provided so as to be orthogonal to the electrode plate surface, and an injection direction of the spray nozzle is a circumferential direction around a rotating shaft of the rotating hub, and the hollow arm Rotate A plurality of blades are arranged on the outer peripheral portion inside the rotating hub toward the electrode plate side to be cleaned with respect to the rotating surface formed at the time, and the cleaning liquid conveyed from the cleaning pipe is disposed inside the rotating hub. A cleaning device for an electrostatic precipitator, wherein the rotating hub is rotated by hitting the blades, and then passes through the hollow arm and sprays from the spray nozzle. 4. The cleaning device for an electrostatic precipitator according to claim 2, wherein the spray nozzle has an injection port directed toward the rotation direction of the rotary hub. The rotating hub is disposed above the band electrode part and / or the dust collecting pole part and rotates horizontally, and the spray nozzle directs the spraying direction obliquely downward. The washing | cleaning apparatus of the electric dust collector as described in any one of 1-4. 2. The rotating hub is characterized in that a through hole is provided at the center and is rotatably inserted into a cleaning pipe, and the diameter of the lower through hole is larger than the diameter of the upper through hole. The cleaning device for an electrostatic precipitator according to any one of -5. The rotating hub is provided with a through hole at the center and is rotatably inserted into the cleaning pipe. The diameter of the upper through hole is equal to the diameter of the lower through hole. The apparatus for cleaning an electrostatic precipitator according to any one of claims 1 to 5, wherein the part is provided with a drain hole. The cleaning device for an electrostatic precipitator according to any one of claims 1 to 7, wherein the rotary hub is slidable in a rotation axis direction. The cleaning pipe is provided with a disk-shaped holding member for the rotating hub, and is held so that the rotating hub is placed on the upper side of the holding member, and a concavo-convex shape is formed on one side or both sides of the contact surface of the rotating hub and the holding member. The cleaning device for an electrostatic precipitator according to any one of claims 1 to 8, wherein the cleaning device is applied. The apparatus for cleaning an electrostatic precipitator according to any one of claims 1 to 9, wherein a plurality of the spray nozzles are attached at different angles in one hollow arm. The cleaning device for an electrostatic precipitator according to claim 1, wherein a plurality of the rotating hubs are provided in the cleaning pipe.

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