JP5100358B2 - Filter cleaning device and filter cleaning method - Google Patents

Description

  The present invention relates to a cleaning technique for a filter attached to a powder processing apparatus, and more particularly to a cleaning process for a cartridge filter having a pleated structure.

  In the fields of pharmaceuticals, cosmetics, foods, etc., various products are manufactured by subjecting fine substances such as powders and granules to processing such as granulation, coating, mixing, and drying. In such a process, a granular material processing apparatus such as a fluidized bed granulation coating apparatus that performs processing such as granulation by fluidizing a fine substance by a gas flow is used. In such a granular material processing apparatus, a gas is supplied for fluidizing the granular material, and a filter for separating the granular material from the exhaust gas is provided. The granular material fluidized by the gas flow is filtered by this filter, and only the gas is separated and discharged to the outside of the granular material processing apparatus.

As a filter used for a powder processing apparatus, in order to increase a filtration area, what formed the filter cloth in the shape of a pleat is used in many cases. However, in such a filter, when clogging occurs in the filter medium, the gas flow is hindered, the fluidization of the granular material is hindered, and the processing efficiency is lowered. For this reason, in order to prevent clogging of the filter medium, the fine powder adhering to the filter medium is appropriately removed. The fine powder removal is also called “backwashing”, and is performed by supplying pulsed air in the direction opposite to the fluidized gas flow. For example, when a fluidized gas flow flows from the outside to the inside of the filter, a pulse jet nozzle is arranged inside the filter, and pulse air is ejected from the inside of the filter to the outside. Thereby, the fine powder of the granular material adhering to the collection surface (here outer surface) of a filter is removed, and maintenance of a filter function is achieved.
JP-A-6-262015 Japanese Patent Laid-Open No. 10-235168 Japanese Patent Application No. 2005-290669 Japanese Patent Application No. 2006-189529 JP 2004-97936 JP

  However, the powder adhering to the filter cannot be completely removed even by such a backwashing process, and the powder gradually accumulates to increase the air flow resistance. For this reason, when granulation or the like is performed, it is necessary to separately perform a filter cleaning process when the process is performed for a predetermined time or more. In particular, in the case of a pleated filter, fine powder adhering to the back of the pleat is likely to aggregate, and backwash air is difficult to pass through the back of the pleat, so it is difficult to sufficiently remove the fine powder at the back of the pleat. In particular, if the folds are deeply folded, it is very difficult to remove the fine powder accumulated in the back of the pleats. If there are a large number of pleats per filter, each piece of pleats even if a cleaning nozzle is installed. It was difficult to clean the back.

  The objective of this invention is providing the filter washing | cleaning apparatus and washing | cleaning method which can wash | clean the cartridge filter used with a fluid bed granulation apparatus etc. efficiently.

  The filter cleaning apparatus of the present invention is formed so as to be able to hold a cleaning liquid, and is capable of rotatably storing a filter used in a granular material processing apparatus in a state where the cleaning liquid is injected and held, and the processing container And a nozzle device that jets a bubble flow or a liquid containing bubbles to the filter immersed in the cleaning liquid and cleans the filter while rotating the filter in the cleaning liquid. To do.

  In the present invention, the filter is immersed in the processing container storing the cleaning liquid, and the cleaning process is performed while rotating the filter with the bubble flow or the liquid containing bubbles ejected from the nozzle device attached to the processing container. . In the filter cleaning apparatus, when the filter rotates during the cleaning process, the fine powder accumulated in the back of the filter is discharged out of the filter together with the cleaning liquid by the centrifugal force accompanying the rotation, and an efficient cleaning process is performed.

  Further, another filter cleaning apparatus of the present invention is formed so as to be able to hold a cleaning liquid, and in a state in which the cleaning liquid is injected and held, a processing container capable of rotatably storing a filter used in the powder processing apparatus. And a nozzle device that is attached to the processing container and sprays a liquid flow onto the filter in a state immersed in the cleaning liquid and cleans the filter while rotating the filter in the cleaning liquid. To do.

  In the present invention, the filter is immersed in the processing container in which the cleaning liquid is stored, and the cleaning process is performed while rotating the filter by the liquid flow ejected from the nozzle device attached to the processing container. In the filter cleaning apparatus, when the filter rotates during the cleaning process, the fine powder accumulated in the back of the filter is discharged out of the filter together with the cleaning liquid by the centrifugal force accompanying the rotation, and an efficient cleaning process is performed.

  The filter cleaning apparatus may further include an ultrasonic cleaning apparatus that applies ultrasonic vibration to the filter immersed in the cleaning liquid and cleans the filter in the cleaning liquid. good. Accordingly, the filter is rotated by the nozzle device, and the cleaning liquid is vibrated by the high frequency ultrasonic waves emitted from the ultrasonic cleaning device. Therefore, in addition to rotational cleaning, the filter in the cleaning liquid is cleaned by cavitation, minute vibration of the cleaning liquid, or the like.

  A retainer inserted into the filter and fixed to the filter is connected to the processing container; the retainer is connected to the retainer via a rotary joint; the retainer is rotatably attached; and the filter is attached to the processing container. And a support roller unit including a roller attached to the retainer and disposed on the inner side of the filter and in contact with an inner peripheral surface of the filter. Accordingly, the filter is supported from the inner peripheral side by the support roller unit, and the rotation operation of the filter is stabilized.

  Furthermore, a support column provided at the bottom of the processing container, a filter guide rotatably mounted on the support column and inserted with the filter, and an outer peripheral part of the filter guide. You may provide the guide piece contact | abutted to the internal peripheral surface of the said filter at the time of extrapolation. Thereby, the filter is supported from the inner peripheral side by the filter guide and the guide piece, and the rotation operation of the filter is stabilized.

On the other hand, the filter is disposed in the processing container so as to be rotatable about a substantially horizontal rotation axis, the nozzle device is disposed below the filter, and the filter is operated by a bubble flow ejected from the nozzle device. Or you may make it rotate by the jetting pressure and rising pressure of the liquid containing a bubble . Thereby, rotational pressure can be applied to the filter from the lateral direction while using the upward pressure increase of the bubbles, and the filter can be rotated more satisfactorily. In this case, the filter cleaning device is disposed in the processing container and is disposed at the bottom of the processing container, and a filter support member that rotatably supports a rotating shaft attached to the center of the filter. You may provide the nozzle apparatus which injects a bubble flow with respect to the said filter from the downward direction.

  The filter cleaning method of the present invention is a filter cleaning method for cleaning a filter used in a powder processing apparatus by storing the filter in a processing container storing a cleaning liquid, and rotating the filter into the processing container. The nozzle device installed in the processing vessel is jetted, a bubble flow or a liquid containing bubbles is ejected along the tangential direction to the filter, and the filter is rotated by the bubble flow or the liquid containing bubbles. A filter cleaning method, wherein the filter is cleaned while the filter is cleaned.

  In the present invention, the filter is immersed in the processing container storing the cleaning liquid, and the cleaning process is performed while rotating the filter with the bubble flow or the liquid containing bubbles ejected from the nozzle device attached to the processing container. . In the filter cleaning apparatus, when the filter rotates during the cleaning process, the fine powder accumulated in the back of the filter is discharged out of the filter together with the cleaning liquid by the centrifugal force accompanying the rotation, and an efficient cleaning process is performed. .

  Another filter cleaning method of the present invention is a filter cleaning method for storing and cleaning a filter used in a granular material processing apparatus in a processing container storing a cleaning liquid, wherein the filter is stored in the processing container. A cleaning liquid is sprayed along a tangential direction to the filter from a nozzle device installed in the processing vessel, and the filter is cleaned while rotating the filter with the cleaning liquid. Features.

  In the present invention, the filter is immersed in the processing container in which the cleaning liquid is stored, and the cleaning process is performed while rotating the filter by the liquid flow ejected from the nozzle device attached to the processing container. In the filter cleaning apparatus, when the filter rotates during the cleaning process, the fine powder accumulated in the back of the filter is discharged out of the filter together with the cleaning liquid by the centrifugal force accompanying the rotation, and an efficient cleaning process is performed. .

  In addition, ultrasonic vibration may be applied to the filter immersed in the cleaning liquid, and the filter may be cleaned with the ultrasonic waves. Accordingly, the filter rotates due to the bubble flow from the nozzle device, and the cleaning liquid vibrates due to the high frequency ultrasonic waves emitted from the ultrasonic cleaning device. Therefore, in addition to rotational cleaning, the filter in the cleaning liquid is cleaned by cavitation, minute vibration of the cleaning liquid, or the like.

Further, the filter is disposed so as to be rotatable about a substantially horizontal rotation axis , and the bubble flow or a liquid containing bubbles is ejected from a nozzle device installed below the filter in the processing container, and the bubbles The filter may be cleaned while the filter is rotated by a jet pressure and a rising pressure of a liquid containing a flow or bubbles . Thereby, rotational pressure can be applied to the filter from the lateral direction while using the upward pressure increase of the bubbles, and the filter can be rotated more satisfactorily.

  According to the filter cleaning apparatus of the present invention, the filter is immersed in the processing container storing the cleaning liquid, and the cleaning process is performed while rotating the filter with the bubble flow or the liquid containing bubbles ejected from the nozzle device attached to the processing container. Therefore, the fine powder collected in the back of the filter can be discharged together with the cleaning liquid to the outside of the filter, and an efficient cleaning process can be performed.

  Further, according to another filter cleaning apparatus of the present invention, the filter is immersed in a processing container in which the cleaning liquid is stored, and the cleaning process is performed while rotating the filter by the liquid flow ejected from the nozzle device attached to the processing container. Since it implements, the fine powder collected in the back of the filter can be discharged | emitted out of a filter with a washing | cleaning liquid, and it becomes possible to perform an efficient washing process.

  Furthermore, according to the filter cleaning device of the present invention, by further providing an ultrasonic cleaning device that applies ultrasonic vibrations to the filter, a high-frequency supersonic wave emitted from the ultrasonic cleaning device can be obtained along with the rotational cleaning of the filter by the nozzle device. Cleaning with sonic waves becomes possible. Therefore, in addition to rotational cleaning, the filter in the cleaning liquid can be cleaned by cavitation, minute vibration of the cleaning liquid, etc., and the cleaning efficiency can be further increased.

  In addition, according to the filter cleaning device of the present invention, the filter is disposed so as to be rotatable about a substantially horizontal rotation axis, and the nozzle device is disposed below the filter, thereby utilizing the upward pressure increase of the bubbles. Rotational pressure can be applied to the filter from the lateral direction. For this reason, the filter can be rotated more favorably, and the cleaning efficiency can be improved.

  According to the filter cleaning method of the present invention, the filter is immersed in the processing container storing the cleaning liquid, and the cleaning process is performed while the filter is rotated by the bubble flow or the liquid containing bubbles ejected from the nozzle device attached to the processing container. Therefore, the fine powder collected in the back of the filter can be discharged together with the cleaning liquid to the outside of the filter, and an efficient cleaning process can be performed.

  Further, according to another filter cleaning method of the present invention, the filter is immersed in a processing container storing a cleaning liquid, and the cleaning process is performed while rotating the filter by a liquid flow ejected from a nozzle device attached to the processing container. Since it implements, the fine powder collected in the back of the filter can be discharged | emitted out of a filter with a washing | cleaning liquid, and it becomes possible to perform an efficient washing process.

  Furthermore, according to the filter cleaning method of the present invention, since the ultrasonic vibration is further applied to the filter immersed in the cleaning liquid and the filter is cleaned by this ultrasonic wave, along with the rotational cleaning of the filter by the nozzle device, Cleaning with high-frequency ultrasonic waves emitted from the ultrasonic cleaning apparatus is possible. Therefore, in addition to rotational cleaning, the filter in the cleaning liquid can be cleaned by cavitation, minute vibration of the cleaning liquid, etc., and the cleaning efficiency can be further increased.

  In addition, according to the filter cleaning method of the present invention, the filter is disposed so as to be rotatable about a substantially horizontal rotation axis, and the bubble flow is ejected from below the filter by the nozzle device. Meanwhile, rotational pressure can be applied to the filter. For this reason, the filter can be rotated more favorably, and the cleaning efficiency can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing a configuration of a filter cleaning apparatus that is Embodiment 1 of the present invention, FIG. 2 is an explanatory view showing a state of the filter cleaning apparatus of FIG. 1 viewed from the right direction, and FIG. It is explanatory drawing which shows the state seen from the direction. The filter cleaning apparatus 1 in FIG. 1 is a cartridge filter cleaning apparatus used in a powder processing apparatus such as a fluidized bed granulation coating apparatus, and is formed separately from the powder processing apparatus. The filter cleaning device 1 is a cleaning device dedicated to the cartridge filter, and the cartridge filter removed from the particle processing device is cleaned in the filter cleaning device 1.

  As shown in FIGS. 1-3, the filter washing | cleaning apparatus 1 is provided with the box-shaped processing container 2 by which the cross section became a substantially oval shape. The processing container 2 is filled with the cleaning liquid 10. In the filter cleaning apparatus 1, the cartridge filter 3 (hereinafter abbreviated as “filter 3”) is immersed in the cleaning liquid 10, and the cleaning process is performed while being rotated by a bubbling jet or the like. Do. The processing container 2 is formed of acrylic resin so as to be transparent, and the inside state, that is, the filter cleaning state can be observed from outside the apparatus. An upper lid 4 is attached to the upper portion of the processing container 2 and a bottom plate 5 is attached to the lower portion thereof. The upper lid 4 and the bottom plate 5 are made of metal such as stainless steel. The upper lid 4 can be attached to and detached from the processing container 2, and a filter 3 is attached to the processing container 2 side of the upper lid 4. A caster 6 is attached to the lower surface side of the bottom plate 5, and the filter cleaning device 1 can be moved as appropriate.

  A filter 3 is rotatably attached to the upper lid 4. The filter 3 is constituted by a filter medium obtained by forming a filter cloth made of a polyester nonwoven fabric into a cylindrical shape. On the outer periphery of the filter 3, a pleat portion 3a (see FIG. 5) formed by bending a filter cloth into a bowl shape is provided. The longitudinal dimension of the filter 3 is 130 to 550 mm for a small device, about 220 to 1200 mm for a large device, and the outer diameter of the filter 3 is about 75 to 120 mm for a small device and about 200 to 325 mm for a large device. It is formed. The pleat portion 3a is formed to have a size of 13 to 25 mm in a small device and about 45 to 55 mm in a large device.

  As shown in FIG. 1, a retainer 7 for supporting the filter 3 is provided below the upper lid 4. The retainer 7 is formed in a rod shape, and a rotary joint 8 is attached to an upper end portion thereof. The retainer 7 is rotatable with respect to the upper lid 4 via a rotary joint 8 disposed above the liquid level S of the cleaning liquid 10. A filter fixing knob 11 is attached to the lower end portion of the retainer 7, and the filter 3 is fixed to the retainer 7 by tightening the filter fixing knob 11. In this way, the filter 3 is suspended in a freely rotatable state below the upper lid 4 by the retainer 7, the rotary joint 8 and the filter fixing knob 11.

  The retainer 7 is also provided with a support roller unit 12 for rotatably supporting the filter 3 from the inside. FIG. 4 is an explanatory diagram showing the configuration of the support roller unit 12. As shown in FIG. 4, the support roller unit 12 includes a metal retainer mounting portion 13 formed in a cylindrical shape, and is formed so as to be able to be externally inserted into the retainer 7. On the outer periphery of the retainer mounting portion 13, three rollers 14 that are rotatably supported are equally divided. The retainer mounting portion 13 is also formed with three equal bolt holes 15. The bolt hole 15 is provided so as to penetrate the retainer mounting portion 13 along the radial direction, and a screw is cut on the inner surface thereof. The support roller unit 12 is fixed to the outer peripheral portion of the retainer 7 by screwing a bolt 16 into the bolt hole 15.

  When such a support roller unit 12 is attached to the retainer 7, the rollers 23 arranged in three directions come into contact with the inner peripheral surface 3 b of the filter 3. That is, the filter 3 is supported from the inner peripheral side by the support roller unit 12. For this reason, blurring of the filter 3 during rotation is reduced, and a smooth and stable rotation operation is possible. In addition to the position indicated by the solid line in FIG. 1, the support roller unit 12 may be further arranged at the position indicated by the broken line to further stabilize the filter rotation.

  On the other hand, an air cylinder 32 is connected above the retainer 7 via a support arm 31. The air cylinder 32 is fixed to the side of the upper lid 4 by a bracket 33. The retainer 7 can be moved in the vertical direction by the air cylinder 32. That is, the filter 3 is attached so as to be movable in the vertical direction within the processing container 2. Note that the air cylinder 32 is not necessarily provided, and may be omitted to simplify the apparatus configuration and reduce the product cost.

  Further, a bubbling cleaning unit 35 is attached to the center of the upper lid 4 so as to be movable in the vertical direction. The bubbling cleaning unit 35 includes a bubbling jet nozzle (nozzle device) 36, a liquid supply pipe 37, and an intake pipe 38. The liquid supply pipe 37 is connected to the cleaning liquid tank 41 via a pump 39, and the cleaning liquid 10 in the cleaning liquid tank 41 is pressurized and supplied to the liquid supply pipe 37 by the pump 39. The upper end of the intake pipe 38 is open to the atmosphere, and the bubbling jet nozzle 36 communicates with the atmosphere via the intake pipe 38. The liquid supply pipe 37 and the intake pipe 38 can be fixed at an arbitrary position in the vertical direction by a fixing screw 40. On the other hand, a drain pipe 42 is attached to the bottom plate 5. The drain pipe 42 is connected to the cleaning liquid tank 41 via the valve 43, and the cleaning liquid 10 supplied into the processing container 2 by the bubbling jet nozzle 36 is discharged from the drain pipe 42 and returns to the cleaning liquid tank 41 for circulation. used.

  Since a large amount of powder adheres to the filter 3 after the granulation coating process, in the initial stage of the cleaning process, the waste liquid of the cleaning liquid 10 is discarded without being circulated, and the cleaning liquid 10 is cleaned from the cleaning liquid tank 41. May be supplied in a flowing state, whereby the filter 3 can be efficiently cleaned. Then, at the stage where the deposits on the filter 3 are removed to some extent, the cleaning liquid 10 is circulated and used in the liquid circulation system of FIG. As described above, by appropriately changing the supply form of the cleaning liquid 10 according to the cleaning stage, it is possible to reduce the amount of the cleaning liquid used while improving the cleaning efficiency. When the cleaning liquid 10 is circulated and used, as shown in FIG. 1, not only the cleaning liquid 10 is circulated via the cleaning liquid tank 41, but also the processing container 2 itself is regarded as a liquid tank and directly from the valve 43. The cleaning liquid 10 may be sent to the pump 39 to circulate the cleaning liquid.

  The cleaning liquid 10 is pressurized and supplied from a liquid supply pipe 37 to the bubbling jet nozzle 36. The bubbling jet nozzle 36 sucks outside air from the intake pipe 38 by this liquid flow, mixes the outside air into the cleaning liquid 10 to form a bubble flow, and jets it into the cleaning liquid 10 in the processing container 2. FIG. 5 is an explanatory view showing a state of jet injection by the bubbling jet nozzle 36. As shown in FIG. 5, a jet jet 44 is blown to the filter 3 in the processing container 2 from a substantially tangential direction. The jet jet 44 hits the pleat portion 3a of the filter 3 that is rotatably arranged, and the filter 3 is rotated in the direction of the arrow by the jet jet 44. In the filter cleaning apparatus 1, the bubbling jet nozzle 36 is arranged so that the filter 3 rotates in the same direction, and a liquid flow as indicated by a broken-line arrow is generated in the processing container 2.

  In such a filter cleaning apparatus 1, the filter 3 is cleaned as follows. First, the filter 3 to which fine powder has adhered is removed from the fluidized bed granulator or the like and attached to the filter cleaning device 1. That is, the filter 3 is attached to the outside of the retainer 7, and the filter fixing knob 11 is tightened to fix the filter 3 to the upper lid 4. Thereafter, the upper lid 4 is attached to the upper portion of the processing container 2 while the filter 3 is immersed in the processing container 2 in which the cleaning liquid 10 is stored. After the filter 3 is accommodated in the filter cleaning device 1 in this way, the pump 39 is operated, and a jet jet 44 is ejected from the bubbling jet nozzle 36 at a discharge rate of, for example, about 10 L / min.

  As described above, in the filter 3 formed in a pleated shape, the backwash airflow is difficult to pass through the back of the pleated portion 3a, and if fine powder adheres to the pleated portion 3a, there is a possibility that it cannot be sufficiently removed. Therefore, in the filter cleaning apparatus 1, the cleaning liquid 10 is sprayed from the bubbling jet nozzle 36 onto the filter 3, and the fine powder adhering to the back of the pleat portion 3 a is washed away. At this time, a jet jet 44 is injected from the tangential direction to the filter 3 as shown in FIG. 5, and the filter 3 is pivotally supported by the rotary joint 8 and is like a water wheel around the retainer 7 by the jet jet 44. Rotate to. When the filter 3 rotates, the fine powder accumulated in the back of the pleat portion 3a is sent to the outer peripheral side together with the cleaning liquid 10 by the centrifugal force accompanying the rotation. That is, the cleaning liquid 10 sprayed to the pleat part 3a reaches the back part of the pleat and is discharged from the filter 3 together with the fine powder by centrifugal force.

  In the filter cleaning device 1, the jet 3 is ejected and the filter 3 is moved up and down by the air cylinder 32. As a result, the filter 3 and the cleaning liquid 10 rub against each other in the vertical direction, and the cleaning effect is further improved. Further, as shown in FIG. 1, the bubbling jet nozzle 36 is disposed and the lower portion of the filter 3 is washed, and then the bubbling washing unit 35 is moved upward to wash the filter 3 in order from the bottom to the top. At this time, the bubbling cleaning unit 35 manually lifts the filter 3 from the outside of the transparent processing container 2 while checking the cleaning state of the filter 3 and fixes it with a fixing screw 40 at an appropriate position. Note that driving means such as an air cylinder may be connected to the bubbling cleaning unit 35 so that the vertical movement is mechanically driven.

  In this way, in the filter cleaning device 1, the cleaning liquid 10 is sprayed from the tangential direction to the filter 3 and cleaning is performed while rotating the filter 3 by the bubbling jet nozzle 36. Therefore, the back of the pleat that cannot be cleaned only by backwashing. Part of the fine powder can also be sufficiently cleaned by the rotational cleaning process using centrifugal force. In addition, the filter cleaning device 1 does not have a complicated drive device for rotating the filter 3, and the filter 3 can be precisely cleaned with an inexpensive device configuration. Furthermore, by using the filter cleaning device 1 as a dedicated device for the cartridge filter, the device configuration can be simplified and the product price can be reduced.

  In the filter cleaning apparatus 1 shown in FIG. 1, the configuration in which the bubbling jet nozzle 36 is provided in the center of the apparatus is shown. However, as shown in FIG. 6, the bubbling jet nozzle 36 may be arranged on the wall surface 2 a of the processing container 2. good. Further, instead of the bubbling jet nozzle 36, a liquid flow generation nozzle (nozzle device) 45 through which the cleaning liquid 10 is injected under pressure may be used. Also in this case, as shown in FIG. May be disposed on the processing vessel wall surface 2a.

  Next, as Example 2 of the present invention, a filter cleaning apparatus using ultrasonic cleaning together will be described. In the first embodiment, an example in which the bubbling jet nozzle 36 or the liquid flow generation nozzle 45 is used in the filter cleaning device 1 has been described. However, in order to further improve the cleaning effect, an ultrasonic cleaner may be further used. FIG. 8 is an explanatory diagram showing a configuration of a filter cleaning device 50 that is Embodiment 2 of the present invention. In the following embodiments, the same members and portions as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 8, in the filter cleaning device 50, an ultrasonic cleaning device 51 is attached to the wall surface 2 a of the processing container 2 together with the liquid flow generation nozzle 45. The ultrasonic cleaning device 51 includes an ultrasonic vibrator and is connected to a transmitter 52 provided outside the device. As the ultrasonic vibrator, a vibrator that converts electrical input into mechanical vibration, for example, a piezoelectric ceramic element that is one of electro-mechanical conversion elements is used. A high frequency signal of about 15 to 50 kHz is input from the transmitter 52 to the ultrasonic vibrator, and this electrical vibration is converted into mechanical vibration and output.

  In the filter cleaning device 50, the hybrid cleaning is performed in which the rotational cleaning by the liquid flow generating nozzle 45 and the ultrasonic cleaning by the ultrasonic cleaning device 51 are performed in parallel as in the first embodiment. That is, when the cleaning liquid 10 is injected into the processing container 2 and the liquid flow generation nozzle 45 and the ultrasonic cleaning device 51 are operated, the filter 3 is rotated by the jet flow from the liquid flow generation nozzle 45, and the ultrasonic cleaning device 51. The cleaning liquid is vibrated by high-frequency ultrasonic waves emitted from. In addition to the above-described rotational cleaning, the filter 3 in the cleaning liquid 10 is cleaned by cavitation, minute vibration of the cleaning liquid, or the like. In particular, a complicated shape such as the pleated filter 3 can be effectively cleaned to the back of the ridge by this ultrasonic cleaning, and a more effective cleaning process can be performed. Note that the liquid flow generation nozzle 45 and the ultrasonic cleaning device 51 are not necessarily operated simultaneously, and it is also possible to perform the cleaning process by appropriately operating each of them.

  On the other hand, in the filter cleaning device 50, the ultrasonic cleaning device 51 is disposed on the wall surface 2 a of the processing container 2, but the ultrasonic cleaning device 51 may be disposed on the bottom plate 5. FIG. 9 is an explanatory view showing a modified example (ultrasonic cleaning device 55) in which the ultrasonic cleaning device 51 is arranged on the bottom plate 5. As shown in FIG. 9, in the ultrasonic cleaning device 55, the liquid flow generating nozzle 45 is provided in the approximate center of the processing vessel wall surface 2 a, and the ultrasonic cleaning device 51 is placed on the upper surface 5 a of the bottom plate 5 that contacts the bottom surface of the processing vessel 2. Is installed. In the ultrasonic cleaning device 55, the filter 3 is rotated by the liquid flow generating nozzle 45, and vibration is applied to the cleaning liquid 10 by the ultrasonic cleaning device 55 from the filter bottom surface side to perform hybrid cleaning of the filter 3.

  FIG. 10 is an explanatory diagram showing the configuration of a filter cleaning device 60 that is Embodiment 3 of the present invention. In the above-described embodiment, the configuration in which two filters 3 can be accommodated in the processing container 2 has been shown. However, the number of filters accommodated is not limited to two, and can be appropriately changed by one or three or more. Therefore, the filter cleaning device 60 according to the third embodiment is a large device that can accommodate four filters 3. In the filter cleaning device 60, four liquid flow generation nozzles 45 are installed on the wall surface 2 a of the processing container 2, and the filter 3 is rotated in the same direction by a jet flow from each liquid flow generation nozzle 45. . In such a large apparatus, the number of filters that can be processed at a time is increased, and the efficiency of the cleaning process is increased accordingly.

  FIG. 11 is an explanatory diagram showing a configuration of a filter cleaning device 70 that is Embodiment 4 of the present invention. In the filter cleaning device 70 according to the fourth embodiment, an air cylinder 71 for moving the filter 3 up and down is disposed in the processing container 2 so that the device can be made compact.

  As shown in FIG. 11, also in the filter cleaning device 70, an air cylinder 71 for supporting the filter 3 is provided below the upper lid 4. The air cylinder 71 is formed in a cylindrical shape and is connected to a compressor (not shown) provided outside the apparatus. A rotary joint 73 is attached to the lower end of the piston rod 72 of the air cylinder 71. A filter rotation shaft 74 is attached to the rotation joint 73, and the filter rotation shaft 74 is rotatable with respect to the air cylinder 71 via the rotation joint 73. A filter fixing knob 75 is attached to the lower end portion of the filter rotating shaft 74, and the filter 3 is fixed to the filter rotating shaft 74 by tightening the filter fixing knob 75.

  As described above, in the filter cleaning device 70 according to the fourth embodiment, the filter 3 is suspended from the air cylinder 71, the rotary joint 73, the filter rotation shaft 74, and the filter fixing knob 75 so as to be rotatable below the upper lid 4. . Further, the filter 3 can be moved in the vertical direction by the air cylinder 71, and can be rotated and cleaned by the jet jet 44 while swinging in the cleaning liquid 10 in the vertical direction.

  As with the filter cleaning device of the first embodiment, the air cylinder 71 is provided with a support roller unit 21 for rotatably supporting the filter 3 from the inside. FIG. 12 is an explanatory diagram showing the configuration of the support roller unit 21. As shown in FIG. 4, the support roller unit 21 has a configuration in which three rollers 23 are equally divided on the outer periphery of a metal mounting plate 22. A bolt hole 24 and a rotation shaft hole 25 are formed in the attachment plate 22, and the attachment plate 22 is attached to the lower surface of the rotary joint 73 by a bolt 26. At that time, the filter rotation shaft 74 is inserted into the rotation shaft hole 25 in a loosely fitted state. The roller 23 is in contact with the inner peripheral surface 3b of the filter 3, and the filter 3 is supported from the inner peripheral side by the support roller unit 21 so that a stable rotation operation is possible.

  In addition, if the filter 3 supports both a lower end and an upper end with the roller 23, the blur at the time of rotation will reduce and smooth rotation will be attained. However, when the support roller unit 21 is arranged based on a filter having a large filter size, the distance between the upper and lower rollers 23 increases. Then, when cleaning a small size filter, the filter 3 is fixed to the lower end of the filter rotation shaft 74 by the filter fixing knob 75, so that the upper roller 23 may come off from the filter 3. Therefore, in order to perform stable rotational cleaning regardless of the size of the filter, the roller 23 is preferably installed at a slightly lower eye position as shown in FIG.

  In addition to the position indicated by the solid line in FIG. 11, the support roller unit 21 may be further disposed at the position indicated by the broken line (support roller unit 76) to further stabilize the filter rotation. . The support roller unit 76 has the same configuration as the support roller unit 12 shown in FIG. 4 and is bolted to the outside of the air cylinder 71. In the support roller unit 76, the inner diameter of the retainer mounting portion 13 is formed larger than that of the support roller unit 12 in accordance with the diameter of the mounting target (the retainer 7 in the first embodiment and the air cylinder 71 in the fourth embodiment). .

  FIG. 13 is an explanatory diagram showing a configuration of a filter cleaning device 80 that is Embodiment 5 of the present invention, and FIG. 14 is an explanatory diagram showing a state of the filter cleaning device 80 of FIG. 13 as viewed from above. In the filter cleaning device 80 of the fifth embodiment, the filter 3 is supported on the bottom of the processing container 2.

  As shown in FIG. 13, a support column 81 for supporting the filter 3 is provided on the bottom surface 2 b of the processing container 2. The support column 81 is formed of stainless steel, and is erected on a disk-shaped base plate 82 that is also formed of stainless steel. The base plate 82 has a two-stage configuration with different diameters. The lower step portion 82a is fixed to the bottom surface 2b, and the support column 81 is fixed to the center of the upper step portion 82b. A cylindrical filter guide 83 formed of stainless steel is externally attached to the outside of the column 81 so as to be freely rotatable. Three guide pieces 84 formed of synthetic resin are equally attached to the lower outer periphery of the filter guide 83. The outer peripheral dimension of the guide piece 84 is formed to be approximately the same dimension (slightly smaller) as the inner peripheral dimension of the filter 3.

  The dimension of the filter guide 83 in the height direction is smaller than the height of the support column 81. For this reason, when the filter guide 83 is attached to the column 81, the tip of the column 81 protrudes from the upper end of the filter guide 83. A rotation cap 85 made of synthetic resin is attached to the end of the column protruding from the filter guide 83. The rotation cap 85 has a cylindrical shape with the same outer diameter as the filter guide 83, and a column insertion hole 87 is formed at the lower end. The rotation cap 85 is attached above the filter guide 83 in such a manner that the tip end portion of the support column 81 is inserted into the support column insertion hole 87. A filter support shaft 86 projects from the upper end portion of the rotation cap 85. The filter support shaft 86 is formed to have a slightly smaller diameter than the shaft hole 3 d formed at the center of the bottom plate 3 c of the filter 3.

  In the filter cleaning apparatus 80, the filter 3 is attached in the processing container 2 as follows. FIG. 15 is an explanatory diagram showing a process of attaching the filter 3. Here, first, as shown in FIG. 15B, the filter guide 83 and the rotation cap 85 are attached to the support column 81 fixed to the bottom surface 2b of the processing container 2 in the form as shown in FIG. . In this case, the filter guide 83 and the rotation cap 85 are loosely fitted to the support column 81, and both are rotatably attached to the support column 81. After the filter guide 83 and the like are attached to the support column 81, the filter 3 is attached so as to cover the filter guide 83 and the like from above. In this case, the filter 3 is mounted upside down, and the filter support shaft 86 is inserted into the shaft hole 3d of the filter bottom plate 3c as shown in FIG.

  On the other hand, when the filter 3 is mounted outside the filter guide 83, the outer end of the guide piece 84 comes into contact with the inner peripheral surface 3b of the filter 3 as shown in FIG. The inner peripheral surface 3 b of the filter 3 is formed of a metal punching member or a mesh member, and the filter 3 is supported from the inside by three guide pieces 84. That is, the upper end side of the filter 3 is supported by the filter support shaft 86 and the lower end side thereof is supported by the guide piece 84. At this time, since the filter guide 83 and the rotation cap 85 are rotatably attached to the support column 81, the filter 3 is also supported in a rotatable state with respect to the support column 81.

  Also in such a filter cleaning device 80, a bubbling cleaning unit 88 is attached to the central portion of the processing container 2. The bubbling cleaning unit 88 is provided with a bubbling jet nozzle (nozzle device) 89, and the cleaning liquid is pressurized and supplied through a liquid supply pipe 90 by a pump (not shown). As shown in FIG. 14, a jet jet 44 is blown from the bubbling jet nozzle 89 along the substantially tangential direction to the filter 3 in the processing container 2. Thereby, the filter 3 rotatably supported by the support | pillar 81 rotates in the arrow direction of FIG. Therefore, fine powder at the back of the pleats that could not be cleaned only by backwashing can be sufficiently cleaned by the rotary cleaning process using centrifugal force. Also, the filter cleaning device 80 does not have a complicated drive device for rotating the filter 3, and the filter 3 can be precisely cleaned with an inexpensive device configuration.

  In the filter cleaning device 80 of FIG. 13 as well, the bubbling jet nozzle 89 may be arranged on the wall surface of the processing vessel 2 as described above. Instead of the bubbling jet nozzle 89, the liquid flow in which the cleaning liquid 10 is jetted under pressure is used. A generating nozzle may be used. It is also possible to use the bubbling jet nozzle 89 and an ultrasonic cleaner together.

  On the other hand, in the above-described embodiment, the filter 3 is placed vertically in the processing container 2 (with the rotation axis arranged in the vertical direction), and bubble flow or water / bubble flow is applied to the filter 3 from the horizontal direction (horizontal direction). The filter is configured to spray and rotate and clean the filter. However, since the bubble flow or the like injected from the lateral direction rises in the atmospheric direction after the injection, the bubble flow or the like does not hit the filter 3 from the side, and an efficient cleaning process cannot be performed only by the bubble flow or the like. There is a case.

  Therefore, the present inventors have devised a system in which the filter 3 is placed horizontally (in a state where the rotation shaft is disposed in the horizontal direction) and a bubble flow is ejected from below in order to solve the above-described problems. 16 and 17 are explanatory views showing the configuration of the filter cleaning device 100 according to the sixth embodiment of the present invention. FIG. 16 is a cross-sectional view of the filter cleaning device 100 as viewed from the side, and FIG. It is sectional drawing which looked at from the front direction.

  As shown in FIGS. 16 and 17, in the filter cleaning apparatus 100, the filter 3 is placed horizontally in the processing container 2, unlike the above-described embodiment. Filter support plates (filter support members) 101a and 101b are erected on the bottom plate 5 of the processing container 2, and the filter 3 is rotatably attached to the upper end portion thereof. A rotating shaft 102 is attached to the filter 3 during the cleaning process, and the rotating shaft 102 is rotatably supported by the filter support plates 101a and 101b. That is, the filter 3 is installed in the processing container 2 so as to be rotatable about a substantially horizontal rotation axis O.

  An air nozzle 103 for supplying a bubble flow is disposed at the bottom of the processing container 2. An air supply pipe 104 is connected to the air nozzle 103, and compressed air is supplied to the air nozzle 103 from an external compressor (not shown) through the air supply pipe 104. As shown in FIG. 17, two air nozzles 103 are arranged in the longitudinal direction of the apparatus. Further, a drain 105 is attached to the lower surface side of the bottom plate 5 so that the cleaning liquid 10 in the processing container 2 can be discharged out of the container.

  In such a filter cleaning device 100, when compressed air is supplied to the air nozzle 103 via the air supply pipe 104, a bubble flow is jetted from the air nozzle 103 toward the upper filter 3. A bubble flow from the air nozzle 103 is jetted onto the filter 3 from the tangential direction, and the filter 3 rotates about the rotation shaft 102 by this bubble flow. At this time, in addition to the ejection pressure, the bubble flow ejected from the air nozzle 103 is subjected to pressure (buoyancy) that causes the bubbles to rise from the water to the atmosphere. Thereby, the filter 3 rotates efficiently by the synergistic effect of the ejection pressure + the rising pressure.

  Thus, in the filter cleaning apparatus 100 of the embodiment, the filter 3 is placed horizontally in the processing apparatus 2 and a bubble flow is supplied to the filter 3 from below, so that the filter 3 A rotational pressure can be applied to 3 from the side. For this reason, the energy which a bubble has can be utilized efficiently, and it becomes possible to rotate the filter 3 more favorably. Therefore, an efficient cleaning process is possible.

  In addition, in the filter cleaning apparatus 100, a sufficient cleaning effect can be obtained with only the bubbly flow without using a water flow together with the improvement of the cleaning efficiency. This eliminates the need for the cleaning liquid circulation path as described above. Further, it is sufficient that the processing container 2 is provided with a drain 105 for drainage, and the apparatus configuration itself is simplified. 16 and 17 can be used in combination with an ultrasonic cleaner.

  Instead of the air nozzle 103, the above-described bubbling jet nozzle can be used. Further, the number of the air nozzles 103 is not limited to two, and can be appropriately changed depending on the size of the filter 3. Further, in FIGS. 16 and 17, the liquid level S of the cleaning liquid 10 in the processing container 2 is lower than the upper end position of the filter 3, and the filter 3 is not completely submerged in the processing liquid 10. The position of can be set as appropriate.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  For example, in the filter cleaning apparatus 1 according to the first embodiment, the support roller unit 12 including three rollers 14 is used. However, the number of rollers 14 is not limited to this, and it is sufficient that there are at least two or more. However, from the viewpoint of stable support of the filter 3, it is preferable that there are three or more rollers 14. Accordingly, in consideration of cost and support effect, a configuration in which the rollers 14 are arranged equally is particularly preferable.

  Further, it is of course possible to use the bubbling jet nozzle 36 in the filter cleaning devices 50 and 55 of the second embodiment as in the first embodiment. Further, in the second embodiment, it has been described that the rotational cleaning by the liquid flow generating nozzle 45 and the ultrasonic cleaning by the ultrasonic cleaning device 51 are performed simultaneously, but each can be performed independently.

  On the other hand, in the configuration in which the liquid flow generation nozzle 45 and the bubbling jet nozzle 36 are installed on the processing vessel wall surface 2a, when the nozzle is moved up and down, the apparatus configuration becomes complicated. It may be arranged individually. As a result, the entire filter 3 can be cleaned without moving the nozzle up and down. In the first embodiment, it is of course possible to arrange a plurality of bubbling jet nozzles 36 vertically.

  In addition, in the above-described embodiment, the configuration in which the pump 39 is disposed outside the filter cleaning apparatus is shown. However, a pump for supplying liquid may be disposed in the processing container 2. As a result, the entire filter cleaning system can be reduced in size, and the space of the apparatus can be saved.

It is explanatory drawing which shows the structure of the filter washing | cleaning apparatus which is Example 1 of this invention. It is explanatory drawing which shows the state which looked at the filter washing | cleaning apparatus of FIG. 1 from the right direction. It is explanatory drawing which shows the state which looked at the filter washing | cleaning apparatus of FIG. 1 from upper direction. It is explanatory drawing which shows the structure of a support roller unit. It is explanatory drawing which shows the mode of jet injection by a bubbling jet nozzle. It is explanatory drawing which shows a structure at the time of arrange | positioning a bubbling jet nozzle on the wall surface of a processing container. It is explanatory drawing which shows the structure at the time of using the liquid flow generation | occurrence | production nozzle instead of a bubbling jet nozzle, and arrange | positioning on the wall surface of a processing container. It is explanatory drawing which shows the structure of the filter washing | cleaning apparatus which is Example 2 of this invention. It is explanatory drawing which shows the modification which has arrange | positioned the ultrasonic cleaning apparatus on the baseplate. It is explanatory drawing which shows the structure of the filter washing | cleaning apparatus which is Example 3 of this invention. It is explanatory drawing which shows the structure of the filter washing | cleaning apparatus which is Example 4 of this invention. It is explanatory drawing which shows the structure of the support roller unit used with the filter washing | cleaning apparatus of FIG. It is explanatory drawing which shows the structure of the filter washing | cleaning apparatus which is Example 5 of this invention. It is explanatory drawing which shows the state which looked at the filter washing | cleaning apparatus of FIG. 13 from upper direction. It is explanatory drawing which shows the set method of the filter in the filter washing | cleaning apparatus of FIG. It is explanatory drawing which shows the structure of the filter washing | cleaning apparatus which is Example 6 of this invention, and is sectional drawing which looked at the apparatus from the side surface direction. It is sectional drawing which looked at the filter washing | cleaning apparatus of FIG. 16 from the front direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter washing | cleaning apparatus 2 Processing container 2a Wall surface 2b Bottom surface 3 Cartridge filter 3a Pleated part 3b Inner peripheral surface 3c Bottom plate 3d Shaft hole 4 Top lid 5 Bottom plate 5a Top surface 6 Caster 7 Retainer 8 Rotating joint 10 Cleaning liquid 11 Filter fixing knob 12 Support roller unit 13 Retainer mounting portion 14 Roller 15 Bolt hole 16 Bolt 21 Support roller unit 22 Mounting plate 23 Roller 24 Bolt hole 25 Rotating shaft hole 26 Bolt 31 Support arm 32 Air cylinder 33 Bracket 35 Bubbling cleaning unit 36 Bubbling jet nozzle 37 Supply pipe 38 Intake Pipe 39 Pump 40 Fixing screw 41 Cleaning liquid tank 42 Drain pipe 43 Valve 44 Jet jet 45 Liquid flow generating nozzle 50 Filter cleaning device 51 Ultrasonic cleaning device 52 Transmitter 55 Ultrasonic cleaning device 60 Fill Cleaning device 70 Filter cleaning device 71 Air cylinder 72 Piston rod 73 Rotary joint 74 Filter rotation shaft 75 Filter fixing knob 76 Support roller unit 80 Filter cleaning device 81 Support column 82 Base plate 82a Lower step portion 82b Upper step portion 83 Filter guide 84 Guide piece 85 Rotating cap 86 Filter support shaft 87 Column insertion hole 88 Bubbling cleaning unit 89 Bubbling jet nozzle 90 Supply pipe 100 Filter cleaning devices 101a and 101b Filter support plates (filter support members)
102 Rotating shaft 103 Air nozzle 104 Air supply pipe 105 Drain O Rotating axis S Liquid level

Claims (3)

A processing container that is formed so as to be able to hold a cleaning liquid, and in which the cleaning liquid is poured and held, and a filter used in the powder processing apparatus can be rotatably accommodated,
Attached to the processing vessel, the washing liquid the filter of the submerged state in respect to jet a liquid containing bubble flow or bubble, have a nozzle apparatus for cleaning while rotating the filter in the in the cleaning liquid A filter cleaning device comprising:
The filter is disposed in the processing container so as to be rotatable around a substantially horizontal rotation axis, and the nozzle device is disposed below the filter.
The filter cleaning device according to claim 1, wherein the filter is rotated by a jet flow and a rising pressure of a bubble flow or a bubble-containing liquid jetted from the nozzle device. The filter cleaning apparatus according to claim 1, wherein the processing container is
A filter support member installed in the processing container and rotatably supporting a rotation shaft attached to the center of the filter;
A filter cleaning apparatus , comprising: a nozzle device that is disposed at a bottom portion of the processing container and injects a bubble flow toward the filter from below the filter. A filter cleaning method for cleaning a filter used in a powder processing apparatus by storing it in a processing container storing a cleaning liquid,
The filter is rotatably installed in the processing vessel around a substantially horizontal rotation axis,
From the nozzle device installed below the filter in the processing container, a bubble flow or a liquid containing bubbles is ejected along the tangential direction to the filter, and an ejection pressure and an upper pressure of the liquid containing the bubble flow or bubbles are increased. A filter cleaning method, wherein the filter is cleaned while rotating the filter by boosting.

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