JP2003103128A - Filter cleaning apparatus and powder treating apparatus provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter cleaning apparatus for cleaning a bag filter, which is used in an apparatus required to be sterilized and/or made dust-free, without generating impurities (dust) in such a state that the bag filter is installed in the main body of the apparatus without removing the bag filter from the main body. SOLUTION: This filter cleaning apparatus for cleaning off attachments stuck to the bag filter 201 by blowing a fluid against the filter 201 is provided with a cleaning nozzle 101 disposed in/fixed to the periphery of the filter 201. Fluid jetting holes are formed on the nozzle 101 for spreading the fluid all over the surface of the filter 201.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a bag filter, and more particularly to a filter cleaning apparatus provided with a bag filter in an apparatus requiring sterilization and a powder processing apparatus including the filter cleaning apparatus. .

[0002]

2. Description of the Related Art A bag filter is used as a filter for capturing fine particles floating or flowing in a granulating chamber in a granulating apparatus for producing target particles from two kinds of fluids sprayed inside. Usually, the bag filter is reused by removing the deposits on the surface, that is, by cleaning.

As a method for cleaning the bag filter, a method is generally used in which a fluid such as compressed air or a cleaning liquid is blown onto the bag filter to remove the adhered substances on the surface or to wash it off. Compressed air is mainly used for cleaning off, and a fluid such as a cleaning liquid is used for cleaning off. Conventionally, as a cleaning device, a rotary nozzle that sprays fluid while rotating is used so that the fluid spreads over the surface of the bag filter and the deposits on the surface are washed away.

[0004]

By the way, when a granulating apparatus equipped with a bag filter is used as an apparatus that requires sterilization and / or dedusting in pharmaceutical manufacturing, food manufacturing, etc., the entire apparatus can be washed. Will be needed.

However, when a rotating nozzle is used as a cleaning device for a bag filter provided in the above-mentioned granulating apparatus, impurities (dust) are generated due to friction during rotation of members constituting a rotating portion of the rotating nozzle. ) Occurs. For this reason, there arises a problem that the entire apparatus cannot be kept dust-free.

For this reason, when a bag filter is used in a device that requires sterilization and dust-free, the bag filter is removed from the main body of the device in an environment such as a clean room, not by cleaning using the rotary nozzle. It is necessary to wash and then return to the main body of the apparatus to sterilize the entire apparatus, which causes a problem that it takes a lot of time and labor.

The present invention has been made in view of the above conventional problems, and an object thereof is to remove the bag filter from the main body of the apparatus when the bag filter is used in an apparatus that requires sterilization and / or dedusting. Another object of the present invention is to provide a filter cleaning device that can be cleaned without generating impurities while being mounted on the device body, and a powder processing device including the filter cleaning device.

[0008]

In order to solve the above-mentioned problems, a filter cleaning device according to a first aspect of the present invention is a filter cleaning device in which a fluid is blown to a bag filter to wash off the deposits on the bag filter. The bag filter is characterized in that it is provided with a pipe fixedly arranged around the bag filter, and the pipe is provided with a fluid ejection port for distributing the fluid over the entire surface of the bag filter.

According to the above construction, the pipe for ejecting the fluid to the bag filter is fixedly arranged around the bag filter. Therefore, a rotary nozzle is used as a fluid ejecting mechanism as in the prior art. As in the case of use, impurities are not generated due to friction when the members are driven.

As a result, when the bag filter is used in a device that needs to be sterilized and / or dust-free, it can be cleaned without removing impurities from the device body without removing the bag filter from the device body. Therefore, the apparatus body can be sufficiently sterilized and / or dust-free.

The pipe fixedly arranged around the bag filter is not limited to a form in which the bag filter is continuously surrounded, but a plurality of divided pipes are arranged around the bag filter as a whole. It may be in a different form.

The pipes divided into a plurality of parts may be arranged symmetrically around the bag filter, but may be arranged asymmetrically by adjusting the shape of the bag filter or the ejection pressure of the fluid.

Further, the fluid ejection port may have a form in which a plurality of pores are arranged, or a form in which elongated slits are formed continuously or dispersed.

In order to solve the above-mentioned problems, the filter cleaning device according to a second aspect of the present invention is, in addition to the configuration of the first aspect, the pipe is divided into a plurality of pipes according to the number of bag filters. It is characterized in that the ejection of the fluid is controlled.

According to the above construction, in addition to the operation of the first construction, the pipe having the fluid jet outlet for jetting the fluid to the bag filter is divided into a plurality of pipes according to the number of the bag filters. By controlling the ejection of the fluid for each pipe, it is possible to appropriately control the pressure and the flow rate for ejecting the fluid to each bag filter.

With this configuration, it is possible to properly eject the fluid in consideration of the fact that the amount of the adhered matter is different for each bag filter. Therefore, it is possible to eliminate the unnecessary ejection of the fluid and more effectively perform the bag filter. Can be washed.

In order to solve the above-mentioned problems, the filter cleaning device according to a third aspect of the present invention is, in addition to the structure of the first or second aspect, a pipe is arranged on the upstream side of the bag filter in the direction of washing off the deposits. It is characterized by

According to the above construction, in addition to the function of the first or second aspect, the pipe is arranged on the upstream side of the bag filter in the direction of washing off the adhering matter, so that the fluid does not resist gravity. Can be sprayed on a bug filter.

As a result, as compared with the case where the pipe is arranged on the downstream side of the bag filter in the direction of washing off the deposits, that is, the case where the fluid is sprayed against the gravity, the ejection control of the fluid to the bag filter (ejection pressure , The ejection direction and the like) can be easily performed, so that the cleaning effect can be enhanced.

In order to solve the above-mentioned problems, the filter cleaning device according to a fourth aspect of the present invention is, in addition to the structure of the first or second aspect, that the pipes are provided at predetermined intervals along the direction in which the deposits on the bag filter are washed off. It is characterized by multiple arrangements.

According to the above construction, in addition to the effect of the first or second aspect, the plurality of pipes are arranged at a predetermined interval along the direction in which the adhering matter on the bag filter is washed off. The fluid can be effectively spread over the entire surface, and the cleaning effect can be enhanced.

In particular, when it is difficult to distribute the fluid to the entire bag filter with one pipe, as in the case where the bag filter is long in the direction of washing off the deposits, as described above, the pipe is By arranging a plurality of the filter deposits at a predetermined interval in the washing direction, the fluid can be effectively spread over the entire bag filter.

In order to solve the above-mentioned problems, a filter cleaning device according to a fifth aspect of the present invention has, in addition to the structure of any one of the first to fourth aspects, a fluid ejection port including a plurality of fine pores. It is characterized in that a plurality of types of ejection angles of the fluid with respect to the bag filter of the hole are set according to the shape of the bag filter.

According to the above structure, in addition to the operation of any one of claims 1 to 4, the ejection angle of the fluid with respect to the bag filter of the pores forming the fluid ejection port depends on the shape of the bag filter. By setting a plurality of types, it becomes possible to spread the fluid over the entire bag filter.

As a result, the bag filter is cleaned more effectively, and the entire apparatus can be sufficiently sterilized.

In order to solve the above problems, the powder processing apparatus of claim 6 is a powder processing apparatus equipped with a bag filter for filtering air containing particles and dust, and the bag filter is washed. As a cleaning device, the filter cleaning device according to any one of claims 1 to 5 is provided.

According to the above construction, the filter cleaning device according to any one of claims 1 to 5 is provided as the cleaning device for cleaning the bag filter, so that the fluid is ejected to the bag filter. Since the piping to be fixed is arranged around the bag filter, as in the case of using a rotary nozzle as a fluid ejection mechanism as in the conventional case,
Impurities due to friction between members do not occur.

As a result, when a bag filter is used in a powder processing apparatus that needs to be sterilized and / or dust-free, impurities are generated while the bag filter is attached to the apparatus body without removing it from the apparatus body. Since the cleaning can be performed without using the apparatus, the apparatus body can be sufficiently sterilized and / or dust-free.

In order to solve the above-mentioned problems, a powder processing apparatus according to a seventh aspect of the present invention is, in addition to the structure of the sixth aspect, the powder processing apparatus sprays a liquid material onto flowing or floating particles. It is characterized by being a granulating device equipped with a nozzle and a bag filter.

According to the above construction, in addition to the operation according to the construction of claim 6, the apparatus main body is used for the granulating apparatus which is often used in the manufacturing apparatus which requires sterilization and dust-free of medicines and foods. Can be sufficiently sterilized and dedusted.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION [Embodiment 1] The following will describe one embodiment of the present invention. In addition,
In the present embodiment, an example will be described in which the filter cleaning device of the present invention is applied to a granulating device equipped with a nozzle for spraying a liquid material onto flowing or floating particles and a bag filter.

As shown in FIG. 4, the granulating apparatus according to the present embodiment is provided with a substantially cylindrical granulating chamber 200, and below the granulating chamber 200, a liquid raw material as a raw material (not shown) is used. A spray nozzle for spraying is provided.

The granulation chamber 200 is provided at the bottom with the granulation chamber 2
00 is provided with an opening (not shown) for introducing flowing air, and an opening 200a for discharging the air in the granulation chamber 200 to the outside is provided at the upper part.

That is, in the granulation chamber 200, the flow air is supplied upward from the lower part to cause the liquid raw material sprayed from the spray nozzle to flow in the granulation chamber 200,
Air is discharged from the upper opening 200a.

Therefore, in the granulating apparatus having the above structure, the flowing air is blown upward into the granulating chamber 200, and the liquid material is also sprayed upward from the spray nozzle into the flowing air. While the fine particles of the liquid material are suspended inside the granulation chamber 200, the water content of the liquid material is evaporated and granulated. At this time, the fine particles are intermittently coated with the liquid material sprayed from the spray nozzle to grow. By repeating such a process, particles having a predetermined particle size are manufactured.

Further, as described above, the granulating chamber 200 has a substantially cylindrical bag for filtering the atomized liquid material and the flowing air supplied from the lower part before being discharged from the upper opening 200a. A plurality of filters 201 are provided.

This bag filter 201 is used in the granulation chamber 200.
Inside, it is attached so as to be hung from the upper side of the granulation chamber 200 such that the longitudinal direction is the vertical direction, that is, the vertical direction.

Further, the granulation chamber 200 is provided with a nozzle 202 for cleaning and sterilizing the inside after granulation so as to be located below the lower end portion of the bag filter 201. From this nozzle 202, cleaning liquid, steam,
The fluid required for cleaning and sterilization such as compressed air is the granulation chamber 200.
It is designed to blow out inside.

A filter cleaning device 100 for cleaning and sterilizing the bag filter 201 is provided at a position corresponding to the upper end of the bag filter 201. A valve 203 provided in the granulation chamber 200 is connected to the filter cleaning device 100, and a fluid required for cleaning / sterilization such as cleaning liquid, steam, compressed air is supplied through the valve 203. It has become. Details of the filter cleaning device 100 will be described later.

Further, in the upper part of the granulation chamber 200, compressed air, a cleaning liquid,
A nozzle 204 for spraying steam is provided.
After the particles and dust adhering to the bag filter 201 in the granulating process are blown off by the compressed air from the nozzle 204, a cleaning liquid is sprayed to clean the surface, and further steam is sprayed to sterilize the surface.

The bag filter 201 is shown in FIG.
As shown in (a) and (b), a substantially cylindrical punching plate 205 as a reinforcing member, and a filter plate 20 provided so as to cover the punching plate 205.
6 and 6.

A plurality of openings 205a are formed on the surface of the punching plate 205, and the surface 206a of the filter plate 206 is pleated to increase the filter surface area.

The filter plate 206 has a three-layer structure including a protection layer, a filtration layer, and a reinforcement layer from the outside, and is formed by sintering three wire nets having a mesh roughness adjusted in advance. There is. As a result, the surface 206a of the filter plate 206 is provided with innumerable small holes of about 2 μm in diameter. As the material of this wire mesh, stainless steel 316L or a material having excellent corrosion resistance against sterilizing steam such as Hastelloy is preferably used.

Since the bag filter 201 having the above-mentioned structure can capture even very fine particles, it is only necessary to blow air from the nozzle 204 provided on the upper part of the granulation chamber 200 shown in FIG. , Filter plate 206
The particles trapped by can not be completely removed. Along with this, washing and sterilization cannot be performed sufficiently.

Therefore, as shown in FIG. 4, the bag filter 201 is cleaned and sterilized using the filter cleaning device 100 provided at a position corresponding to the upper end of the bag filter 201.

As shown in FIG. 1, the filter cleaning apparatus 100 has a cleaning nozzle 101 consisting of two pipes symmetrically arranged about a straight line A passing through the center of the inner circumference of the granulation chamber 200. Then, each of the cleaning nozzles 101 is sequentially supplied with a fluid required for cleaning / sterilization such as a cleaning liquid, steam and compressed air through the valve 203 described above. Here, a granulating apparatus including four bag filters 201 will be described. Note that FIG. 1 shows a filter cleaning device 100.
FIG. 3 is a view of the above as viewed from the upper side of the granulation chamber 200. Further, in the following description, the term “fluid” means one or all of compressed air, cleaning liquid, and steam unless otherwise specified.

The cleaning nozzle 101 is used in the granulation chamber 200.
A substantially arc-shaped first pipe 101 provided along the inner circumference of the
a and the first pipe 101a, the granulation chamber 200
Two second pipes 101b extending toward the center of the
And a third pipe 101c communicating with the first pipe 101a and connected to a valve 203 provided in the granulation chamber 200.

The second pipe 101b is the first pipe 1.
It is arranged at an angle of 45 ° from the center of 01a.
That is, the two second pipes 101b are arranged at an angle of 90 ° with each other.

Therefore, the four second pipes 101b of the two cleaning nozzles 101 are arranged so as to divide the inner circumference circle of the granulation chamber 200 into four equal parts. This allows
The bag filters 201 are arranged between the second pipes 101b.

That is, the first pipe 101a and the second pipe 101b of the cleaning nozzle 101 are provided in each bag filter 2
01 fixed around four bag filters 201
Will be arranged so as to surround each.

As shown in FIG. 2, the first pipe 101a and the second pipe 101b are formed with a plurality of pores 102 ... As fluid ejection ports, so that the fluid supplied through the third pipe 101c can be supplied. It is supposed to gush out. Note that FIG. 2 is a view of the cleaning nozzle 101 as viewed from the back side.

In the first pipe 101a, as shown in FIG.
As shown in FIG. 3, the pores 102 are formed which are inclined from the center of the pipe at one side (on the side where the bag filter 201 is arranged) at a predetermined angle. In addition, in the second pipe 101b, as shown in FIG.
As shown in (b), the pores 102 are formed so as to incline toward both outer sides at a predetermined angle from the center of the pipe.

The number of the pores 102 formed, the inclination angle (spout angle), and the diameter of the pores 102 are such that when the cleaning nozzle 101 is fixed at a predetermined position, the fluid sprayed on the bag filter 201 is The size and shape of the bag filter 201 and each of the pores 10 so that the fluid spreads from each arrival point to the periphery thereof and reaches the entire surface of the bag filter 201.
It is appropriately set in consideration of the conditions such as the ejection pressure of the fluid ejected from No. 2 and the flow velocity.

In the present embodiment, the diameter of the fine holes 102 formed in the first pipe 101a and the second pipe 101b is 1 mm, but the first pipe 101a and the second pipe 101a
The pipe 101b has a diameter such that when the cleaning liquid flows in each pipe at a predetermined pressure (normally ^{2 to 3} kgf / cm ² ), the average flow velocity in the pipe is 3 m / s or more (turbulent flow causes The flow rate is set so that the adherence of the powder of can be washed off.

As described above, since the cleaning nozzle 101 is fixed, when cleaning and sterilizing the bag filter 201, there is no problem that impurities are generated due to the rotation of the cleaning nozzle as in the conventional case. Therefore, in addition to cleaning and sterilization, it is possible to keep the inside of the device dust-free.

In the above filter cleaning device 100, as shown in FIG.
As shown in FIG. 5, an example in which four bag filters 201 are cleaned and sterilized by two cleaning nozzles 101 is shown.
The present invention is not limited to this, and for example, as shown in FIG. 6, a filter cleaning device 300 including four cleaning nozzles 301 may be used.

As shown in FIG. 6, each cleaning nozzle 301 communicates with the first pipe 301a provided along the inner peripheral surface of the granulation chamber 200 and the first pipe 301a, and the granulation chamber 200 Second pipe 301b extending toward the center of the
And the ejection control of the fluid is independently possible via each valve 203.

The first pipe 301a and the second pipe 301b are provided with pores (not shown) for spraying a fluid necessary for cleaning and sterilizing the bag filter 201. Also in this case, the inclination angle and the diameter of the pores are the same as the size and shape of the bag filter 201 to be cleaned and sterilized.
Also, it is appropriately set according to the conditions such as the flow rate and the flow velocity of the compressed air and the cleaning liquid ejected from each pore.

Further, in the case of the cleaning nozzle 301 shown in FIG. 6, the distance from the valve 203 provided in the granulation chamber 200 to the end of each pipe is short, so that compressed air and cleaning liquid in each pore can be removed. There is an advantage that it is easy to control the ejection amount.

In the above-described embodiment, the filter cleaning devices 100 and 3 using the four bag filters 201 are used.
00, but in the following, the case of 6 bug filters 201 and the case of 10 bug filters 201 are described.
The following is an example of the case.

In the case of the six bag filters 201, the filter cleaning device 400 shown in FIGS. 7A and 7B is used.

The filter cleaning device 400 is shown in FIG.
As shown in (a), an annular pipe 401 is provided as a cleaning nozzle corresponding to each of the six bag filters 201 fixed in the granulation chamber 200. The annular pipe 401 is arranged along the circumferential direction of the bag filter 201 so as to surround the bag filter 201.

Although not shown, the circular pipe 401 is provided with pores for blowing compressed air, a cleaning liquid, and steam to the bag filter 201 which is enclosed. The inclination angle and the diameter of the pores are appropriately set depending on the size and shape of the bag filter 201 to be cleaned and sterilized, and the conditions such as the flow rate and flow velocity of the compressed air and the cleaning liquid ejected from each pore.

In addition, a valve 4 is provided on each of the annular pipes 401 so that the ejection of compressed air or cleaning liquid can be controlled independently.
02 is provided. The introduction side of the compressed air or the cleaning liquid of the valve 402 may be connected to a compressed air supply source or a cleaning liquid supply source corresponding to each annular pipe 401, or as shown in FIG. 7 (a). Alternatively, it may be connected to one annular pipe 403 and collectively supply compressed air or cleaning liquid to the annular pipe 401 via the valve 404.

Further, as shown in FIG. 7 (b), the annular pipes 401 may be provided in multiple stages in the direction (in this case, the longitudinal direction) for removing the deposits from the bag filter 201.
FIG. 7B shows an example of two stages. In this case, the fluid can be more effectively sprayed onto the bag filter 201.

Also, in the case of 10 bag filters 201, as in the case of 6 bag filters, that is, as shown in FIG. 8, a filter cleaning device arranged to surround each bag filter 201 by an annular pipe 501. 500 may be used.

Although not shown, the circular pipe 501 is provided with pores for blowing the fluid to the bag filter 201 that surrounds it. The inclination angle and the diameter of the pores are appropriately set depending on the size and shape of the bag filter 201 to be cleaned and sterilized, and the conditions such as the flow rate and flow velocity of the compressed air and the cleaning liquid ejected from each pore.

In the case of the above filter cleaning device 500, FIG.
The difference from the filter cleaning device 400 shown in (a) is that
One valve 50 as well as the number of circular pipes 501
The point 2 is that the ejection of the fluid in the two annular pipes 501 or the three annular pipes 501 is controlled. Also in this case, by connecting each valve 502 to the annular pipe 503 provided on the outer peripheral side of the granulation chamber 200, the valve 504 connected to the annular pipe 503 allows the fluid in each annular pipe 501 to flow. The ejection control may be collectively performed.

Further, the ejection of the fluid may be controlled individually by each valve 502.

Further, as shown in FIG. 7B, the circular pipes 501, which are the cleaning nozzles of the filter cleaning device 500, are provided in multiple stages in the washing-off direction (longitudinal direction) of the deposits on the bag filter 201. Good. Also in this case, it is possible to more effectively spray the compressed air and the cleaning liquid onto the bag filter 201.

In the above description, assuming the cylindrical bag filter shown in FIG. 9 or the cylindrical bag filter shown in FIG. 10 and having pleats formed on the surface thereof, cleaning and sterilization of the filter is performed. Described the device.

However, the present invention can be applied not only to the cylindrical bag filter but also to the envelope bag filter shown in FIG. 11 and the envelope bag filter having pleats formed on the surface shown in FIG. In the following embodiments, a filter cleaning device in which an envelope type bag filter is applied to a granulating device will be described.

[Second Embodiment] The following will describe another embodiment of the present invention. The members having the same functions as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the granulating apparatus according to the present embodiment, instead of the cylindrical bag filter 201 of the granulating apparatus shown in FIG. 4 of the first embodiment, as shown in FIG.
A filter cleaning device 6 for cleaning and sterilizing the bag filter 211 using an envelope type bag filter 211 inside
00 is provided.

The filter cleaning device 600 is provided with a cleaning pipe 601 which serves as a cleaning nozzle for spraying a fluid onto the surface of the bag filter 211. As with the first embodiment, the fluid here also indicates a fluid required for cleaning / sterilization, such as compressed air, a cleaning liquid, or steam.

As shown in FIG. 14, the bag filters 211 are vertically arranged so as to be fixed on the side wall of the granulating chamber 200, and the cleaning pipes are provided between the bag filters 211. 601 is provided. At this time, in the bag filter 211, the opening portion 211a has the granulation chamber 2
It is arranged so as to face the outer peripheral side of 00.

As a result, in the bag filter 211, air is blown to the opening portion 211a so that the adhered matter adhered to the bag filter 211 is wiped off from the inside.

Therefore, the bag filter 211 is provided inside the housing 700 as shown in FIG. 14 by providing the opening portion 211a so as to be exposed to the outside of the granulation chamber 200 toward the housing 700 side. The compressed air is supplied to the opening 211a of each bag filter 211 by the pipe 701.

Further, the casing 700 is formed with a discharge port 702 for discharging the air flowing when compressed air is supplied to the pipe 701 to the outside.

Each cleaning pipe 601 is formed with a plurality of pores as fluid ejection ports for ejecting fluid on the surface. The fine holes are formed in the cleaning pipe 601 by the bag filter 21.
It is set so that when it is fixedly arranged around 1, the fluid for washing off the deposits on the surface of the bag filter 211 is spread over the surface.

In the granulating chamber 200, a cleaning pipe 605 as a pipe is provided along the inner peripheral surface facing the position where the bag filter 211 is arranged. The cleaning pipe 605 is provided with pores for spraying fluid on the inner peripheral surface of the granulation chamber 200 and the bag filter 211. The supply control of the fluid to the cleaning pipe 605 is
This is done by the valve 606.

Further, in each cleaning pipe 601, a valve 602 for controlling the ejection of fluid is provided inside the casing 700 outside the granulation chamber 200. Each valve 602 is connected to a connection pipe 603 that communicates with an external fluid supply source. The flow rate control of the fluid by the connecting pipe 603 is performed by the valve 604.

In the above configuration, the bag filter 211
The adhered substances on the surface are completely washed off by the fluid ejected from the cleaning pipe 601.

In each of the above-described embodiments, an example in which the filter cleaning device is used in the granulating device which is one of the powder processing devices has been described, but the present invention is not limited to this, and other powders can be used. The same effect can be obtained by using it in a body treatment device, for example, a drying device, a powder treatment device for coating / powder reaction / compositing of particles, or a crushing device. As the above-mentioned drying device, for example, a drying device for spraying granules by spraying from a coffee liquid to a drying chamber such as spray drying,
A drying device for drying the input raw material fluid before granulation can be mentioned.

Further, in each of the above-described embodiments, the pores have been described as an example of the fluid ejection port, but the present invention is not limited to this, and a slit-shaped opening having continuous pores may be used. Furthermore, any shape may be used as long as the fluid can be distributed to the bag filter in a fixed state with respect to the bag filter and the piping and the opening itself can be cleaned and sterilized. .

[0086]

The filter cleaning device according to the first aspect of the invention is
As described above, with respect to the bag filter, in the filter cleaning device for spraying a fluid to wash off the adhered matter of the bag filter, a pipe fixedly arranged around the bag filter is provided, and the pipe is This is a configuration in which a fluid ejection port that distributes the fluid is formed on the entire surface of the bag filter.

Therefore, since the pipe for ejecting the fluid to the bag filter is fixedly arranged around the bag filter, a rotary nozzle is used as a fluid ejecting mechanism as in the conventional case. As described above, impurities are not generated due to friction when the members rotate.

As a result, when the bag filter is used in a device that needs to be sterilized and / or dust-free, it can be washed without removing impurities from the device body without removing the bag filter from the device body. Therefore, there is an effect that the apparatus main body can be sufficiently sterilized and / or dust-free.

As described above, in the filter cleaning device of the second aspect of the present invention, in addition to the configuration of the first aspect, the pipe is divided into a plurality of parts in accordance with the number of bag filters, and the fluid is divided by this division unit. It is a configuration in which ejection control is performed.

Therefore, in addition to the effect of the structure of claim 1, it is possible to appropriately eject the fluid in consideration of the fact that the amount of the adhered matter is different for each bag filter. There is an effect that it is possible to more effectively clean the bag filter by eliminating the spouting of.

As described above, in the filter cleaning device of the third aspect of the present invention, in addition to the configuration of the first or second aspect, the pipe is arranged on the upstream side of the bag filter in the direction of washing off the deposits. It is a composition.

Therefore, in addition to the effect according to the first or second aspect of the invention, compared with the case where the pipe is arranged on the downstream side in the direction of washing off the adhered matter of the bag filter, that is, when the fluid is sprayed against gravity. As a result, it is possible to easily control the ejection of the fluid to the bag filter (control of the ejection pressure, the ejection direction, etc.), so that the cleaning effect can be enhanced.

As described above, in the filter cleaning device of the invention of claim 4, in addition to the structure of claim 1 or 2, a plurality of pipes are arranged at a predetermined interval along the direction in which the adhering substances of the bag filter are washed off. It is a configured structure.

Therefore, in addition to the effect according to the first or second aspect of the invention, the plurality of pipes are arranged at a predetermined interval along the washing-off direction of the adhering matter on the bag filter, which is effective for the entire bag filter. As a result, it is possible to effectively spread the fluid and enhance the cleaning effect.

As described above, in the filter cleaning apparatus of the fifth aspect of the present invention, in addition to the configuration of any one of the first to fourth aspects, the fluid ejection port is composed of a plurality of pores, and The jet angle of the fluid with respect to the bag filter is set to a plurality of types according to the shape of the bag filter.

Therefore, in addition to the effect of the configuration according to any one of claims 1 to 4, the ejection angle of the fluid with respect to the bag filter of the pores forming the fluid ejection port depends on the shape of the bag filter. By setting multiple types, it becomes possible to spread the fluid over the entire bag filter.

As a result, the bag filter can be cleaned more effectively, and the entire apparatus can be sufficiently sterilized.

As described above, the powder processing apparatus according to the sixth aspect of the present invention is a powder processing apparatus equipped with a bag filter for filtering air containing particles and dust, as a cleaning device for cleaning the bag filter. The filter cleaning device according to any one of claims 1 to 5 is provided.

Therefore, when the powder processing apparatus is applied to an apparatus that needs to be sterilized and / or dust-free, impurities are generated in a state where the bag filter is attached to the apparatus body without removing it from the apparatus body. Since the cleaning can be performed without performing the cleaning, it is possible to sufficiently sterilize and / or dust-free the apparatus body.

As described above, in the powder processing apparatus according to the invention of claim 7, in addition to the configuration of claim 6, the powder processing apparatus has a nozzle for spraying a liquid material onto flowing or floating particles. And a granulating device equipped with a bag filter.

Therefore, in addition to the effect of the structure of claim 6, the main body of the apparatus can be sterilized and non-sterilized with respect to the granulating apparatus which is often used in the manufacturing apparatus which requires sterilization and dedusting of medicines and foods. The effect that dusting can be performed sufficiently is exhibited.

[Brief description of drawings]

FIG. 1 is a plan view of a filter cleaning device according to an embodiment of the present invention.

FIG. 2 is a rear view of a cleaning nozzle portion of the filter cleaning device.

3 (a) is a cross-sectional view of the first pipe of the cleaning nozzle shown in FIG. 2, taken along the line BB, and FIG. 3 (b) is a cross-sectional view of the second pipe of the cleaning nozzle shown in FIG. It is a figure.

FIG. 4 is a schematic configuration diagram of a granulating device including the filter cleaning device.

FIG. 5A is a side view of a bag filter,
(B) is a sectional view taken along line XX of (a).

FIG. 6 is a plan view showing another example of the filter cleaning device.

7 (a) and 7 (b) are schematic configuration diagrams of a filter cleaning device when six bag filters are provided.

FIG. 8 is a schematic configuration diagram of a filter cleaning device when 10 bag filters are provided.

FIG. 9 is a perspective view showing an example of a bag filter.

FIG. 10 is a perspective view showing another example of a bag filter.

FIG. 11 is a perspective view showing another example of the bag filter.

FIG. 12 is a perspective view showing another example of a bag filter.

13 is a schematic configuration diagram of a granulating apparatus using the bag filter shown in FIG.

14 is a schematic plan view of the upper side of the granulating apparatus shown in FIG.

[Explanation of symbols]

1 Granulator 100 filter cleaning device 101 Cleaning nozzle (piping) 102 pores (fluid outlet) 200 granulation chamber 201 Bug filter 211 Bug filter 300 Filter cleaning device 301 Cleaning nozzle (piping) 400 filter cleaning device 401 circular pipe (piping) 500 filter cleaning device 501 circular pipe 600 filter cleaning device 601 Cleaning pipe (piping)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenichi Yoshino             Hosokata, Hirakata, Osaka             Clon Co., Ltd. F term (reference) 4D058 JA04 JB14 JB24 JB25 JB50                       MA15 UA30                 4G004 AA02 CA01 KA01

Claims (7)

[Claims] Claim: What is claimed is: 1. A filter cleaning device for spraying a fluid to a bag filter to wash off the deposits on the bag filter, comprising a pipe fixedly arranged around the bag filter. A filter cleaning device characterized in that a fluid ejection port is formed on the entire surface of a bag filter to distribute the fluid. 2. The filter cleaning device according to claim 1, wherein the pipe is divided into a plurality of pipes according to the number of bag filters, and the ejection control of the fluid is performed in the divided units. 3. The filter cleaning device according to claim 1 or 2, wherein the pipe is arranged on an upstream side in a direction of washing off the deposits on the bag filter. 4. The filter cleaning device according to claim 1, wherein a plurality of the pipes are arranged at a predetermined interval along a direction in which the adhering matter of the bag filter is washed off. 5. The fluid jet outlet comprises a plurality of pores, and a plurality of types of jetting angles of the fluid to the bag filter of each pore are set according to the shape of the bag filter. Item 5. The filter cleaning device according to any one of items 1 to 4. 6. A powder processing apparatus equipped with a bag filter for filtering air containing particles and dust, wherein the cleaning apparatus cleans the bag filter.
6. A powder processing apparatus comprising the filter cleaning device according to any one of 1 to 5. 7. The powder processing apparatus according to claim 6, wherein the powder processing apparatus is a granulating apparatus equipped with a nozzle for spraying a liquid material onto flowing or floating particles and a bag filter. Body processing equipment.