JP6970635B2 - Filtration drying device - Google Patents

Description

The present invention relates to a filtration drying device capable of processing a plurality of steps such as filtration, cake washing, and drying.

For example, in the manufacturing process of chemical products, pharmaceuticals, electronic materials, etc., there are processes such as filtration, cake cleaning, and drying. From the viewpoints of simplification of equipment, space saving, reduction of contamination, ease of cleaning, etc., it is required to process these plurality of processes in a closed tank body. Therefore, a filtration / drying device capable of processing a plurality of steps has been proposed (for example, Patent Document 1). The cake means a solid component before drying including water after separating, dehydrating, and filtering the slurry.

The filtration / drying device disclosed in Patent Document 1 includes a tank body having a slurry supply port, a lower lid provided at the bottom of the tank body and having a filtrate discharge port, which supports a filter cloth, and the inside of the tank body. It is equipped with a stirring blade provided in. The outer circumference of the side portion of the tank body is covered with a heating jacket. In the above-described configuration, the filtration / drying apparatus disclosed in Patent Document 1 can perform filtration, cake cleaning, drying, and the like of the raw material slurry supplied from the slurry supply port.

Further, a filtration / drying device capable of easily discharging the powder or the like after the filtration / drying treatment from the inside of the tank body has also been proposed (for example, Patent Document 2).

The filtration / drying device disclosed in Patent Document 2 includes a tilting means for tilting the tank body (container) together with a stirring blade and a vibration generating means for vibrating the filter cloth, and when discharging powder or the like in the tank body. The tank body is tilted by the tilting means, and the filter cloth is vibrated by the vibration generating means. With this configuration, the filtration drying device disclosed in Patent Document 2 can easily move the cake on the filter cloth and the dried product (powder) of the cake up and down by vibration and move along the inclined surface. The cake and its dried matter accumulated on the filter cloth in the tank body can be discharged.

Japanese Unexamined Patent Publication No. 08-155216 Japanese Patent No. 4090844

In the above-mentioned prior art, in a configuration in which the tank body is tilted while vibrating the filter cloth to discharge the cake or the dried product thereof, the filter cloth and the dried product thereof can be appropriately discharged. The mounting structure of the diaphragm provided at the bottom of the is not sufficiently examined.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a filtration drying device capable of appropriately arranging a filter cloth.

In order to solve the above-mentioned problems, the filtration drying device according to one aspect of the present invention is deposited on the tank body to which the liquid to be treated is supplied, the filter cloth for filtering the liquid to be treated, and the filter cloth. A discharge portion provided on the side portion of the tank body, an inclined drive portion for tilting the tank body toward the discharge portion, and the filter cloth arranged on the main surface for discharging the cake or its dried matter. Along with vibrating, an opening is formed in the center, and the vibrating plate bent so that the edge of the opening is located below the main surface of the tank body and the vibration from the bottom side of the tank body. A vibrating shaft that extends toward the opening of the plate and is provided with a vibrating plate attachment portion at the tip of the vibrating plate to attach the edge of the opening of the vibrating plate, and the vibrating plate via the vibrating shaft. A vibration generator for vibrating is provided, and the end surface of the tip end portion of the vibration plate mounting portion is formed on the same surface as the main surface of the vibration plate.

According to the above configuration, the cake or the dried product thereof deposited on the filter cloth can be discharged to the discharge section in a state where the tank body is tilted because the tilt drive section is provided. Further, since the vibration generator and the vibration shaft provided with the diaphragm attachment portion are provided, the vibration plate attached via the diaphragm attachment portion is vibrated when the cake or its dried product is discharged to the discharge portion. be able to. Therefore, the cake or the dried product thereof deposited on the filter cloth can be easily discharged to the discharge portion.

Further, the edge of the opening of the diaphragm is bent so as to be located below the main surface of the tank body, and the edge of the opening is attached to the diaphragm mounting portion. Therefore, the mounting position of the diaphragm can be positioned downward as compared with the case where the edge portion of the opening of the diaphragm is not bent, and thus the arrangement of the diaphragm mounting portion can be lowered.

Since the arrangement of the diaphragm mounting portion can be lowered in this way, it is possible to prevent the end surface of the tip end portion of the diaphragm mounting portion from becoming higher than the main surface of the diaphragm. Furthermore, since the diaphragm mounting portion is arranged so that the end surface of the tip end portion of the diaphragm mounting portion is formed on the same surface as the main surface of the diaphragm, the space between the diaphragm and the diaphragm mounting portion is provided. It is possible to prevent wrinkles from occurring when the filter cloth is placed on the diaphragm without causing a step.

Therefore, the filtration drying device according to one aspect of the present invention has an effect that the filter cloth can be appropriately arranged.

Further, in the filtration drying device according to another aspect of the present invention, in the above-described configuration, the tip portion of the diaphragm mounting portion has a flange portion protruding in the radial direction of the vibration shaft, and the flange portion is provided. The upper surface of the portion is formed on the same surface as the end surface of the tip portion, and the lower surface of the flange portion is configured to have a mounting surface for mounting the edge portion of the opening of the diaphragm. It may have been done.

According to the above configuration, since the upper surface of the flange portion is formed on the same surface as the tip surface, no step is generated on the main surface, the tip surface, and the flange portion of the diaphragm. Therefore, it is possible to prevent wrinkles from occurring when the filter cloth is arranged on the diaphragm.

Further, since the attachment surface is provided on the lower surface of the flange portion, the edge portion of the opening of the diaphragm can be attached to the lower surface side of the flange portion.

Further, in the above-described configuration, the filtration / drying device according to another aspect of the present invention has a rotary shaft extended along the central axis of the tank body, a stirring blade fixed to the rotary shaft, and the rotary shaft. It may be configured to include a drive unit for rotating and moving up and down.

According to the above configuration, since the rotating shaft, the stirring blade, and the drive unit are provided, the stirring blade is appropriately rotated in various steps (for example, spreading step, drying step, cleaning step, discharging step, etc.) in the filtration drying device. Each process can be carried out.

Further, in the above-described configuration, the filtration / drying device according to another aspect of the present invention closes the bottom surface of the tank body, and has a lower lid arranged below the vibrating plate and a side of the bottom surface side of the tank body. Around the portion, a flange portion on the tank body side that protrudes so as to be parallel to the lower lid, a fastening portion that fastens the lower lid and the flange portion on the tank body side, and a flange portion on the lower lid and the tank body side. The lower lid and the flange portion on the tank body side are fastened to each other by the fastening portion, and the compressive force acts on the outer peripheral edge of the vibrating plate and the outer peripheral edge of the filter cloth. It may be configured to include a fixed portion for fixing the portion.

According to the above configuration, since the lower lid, the flange portion on the tank body side, and the fastening portion are provided, the lower lid and the tank body can be firmly fastened by the fastening portion. In addition, since the fixing part is arranged between the lower lid and the flange on the tank body side, the diaphragm and the filter cloth should be fixed by using the compressive force acting between the lower lid and the flange on the tank body side. Can be done. Therefore, the diaphragm and the filter cloth can be removed only by releasing the fastening by the fastening portion, and the diaphragm and the filter cloth can be easily replaced.

The filtration thin film apparatus according to the present invention is configured as described above, and has an effect that the filter cloth can be appropriately arranged.

It is a side sectional view which shows an example of the schematic structure of the filtration drying apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the posture of the filtration drying apparatus shown in FIG. 1 at the time of carrying out a discharge process. It is a partial cross-sectional view which shows an example of the attachment structure of the filter cloth and the diaphragm in the filtration drying apparatus which concerns on embodiment of this invention.

Hereinafter, a specific configuration example of the filtration drying device 100 according to the embodiment of the present invention will be described with reference to the drawings. In the following, the same or corresponding elements are designated by the same reference numerals throughout all the drawings, and the overlapping description thereof will be omitted.

(Structure of filtration drying device)
The configuration of the filtration drying device 100 will be described with reference to FIGS. 1 and 2. FIG. 1 is a side sectional view showing an example of a schematic configuration of a filtration drying device 100 according to an embodiment of the present invention. In FIG. 1, the upper side of the paper surface is referred to as the upper side of the filtration / drying device 100, the lower side of the paper surface is referred to as the lower side, and the vertical direction of the filtration / drying device 100 is a vertical direction. FIG. 2 is a diagram showing an example of the posture of the filtration / drying device 100 shown in FIG. 1 when the discharge process is performed.

The filtration / drying device 100 according to the embodiment of the present invention is an device capable of performing a plurality of steps such as filtration, cake washing, and drying in the manufacturing process of, for example, chemical products, pharmaceuticals, electronic materials, and the like. As shown in FIG. 1, the filtration / drying device 100 includes a tank body 10, a stirring blade 20, a heating jacket 30, a discharge unit 40, a vibration unit 50, and an inclined drive unit 60.

The tank body 10 is a container to which the liquid to be treated (the liquid to be treated) is supplied, and has, for example, a bell-shaped housing shape or a cylindrical shape. Examples of the liquid to be treated include a slurry and the like. A supply port 11 for charging the liquid to be treated, a rotary drive unit 13 for rotating the stirring blade 20, and an elevating cylinder 14 for raising and lowering the stirring blade 20 are provided on the upper part of the tank body 10. The drive unit of the present invention is realized by the rotary drive unit 13 and the elevating cylinder 14. In addition to the supply port 11, the rotary drive unit 13, and the elevating cylinder 14, a conduit (not shown) for supplying gas for pressurizing the inside of the tank body 10 is located on the upper part of the tank body 10. An inspection hatch (not shown), which is an inspection window, may be further provided.

Further, a cleaning liquid pipe (not shown) for guiding the cleaning liquid for performing cake cleaning is further provided in the upper part of the tank main body 10. On the other hand, a disk-shaped lower lid 12 that closes the bottom surface of the tank body 10 is provided in the lower part of the tank body 10, and above the lower lid 12, for example, a liquid to be treated, which is formed of synthetic fibers. A filter cloth 15 for filtering the cloth and a diaphragm 16 formed of a perforated metal plate are arranged. Further, in the center of the lower lid 12, an insertion hole 22 is provided through which a tubular filtrate discharge pipe 17 projecting downward from the filtration drying device 100 is inserted. As shown in FIG. 1, the filtrate discharge pipe 17 inserted through the insertion hole 22 extends downward from the center of the lower lid 12 by a predetermined length and has a shape bent to the left side of the paper surface.

Further, a discharge portion 40 for discharging the cake and its dried matter deposited on the filter cloth 15 is provided on the side portion of the tank body 10. Although not particularly shown in FIG. 1, a communication port is formed on the side portion on the bottom side of the tank body 10, and the inside of the tank body 10 and the discharge portion 40 are configured to communicate with each other.

A rotating shaft 5 for rotating the stirring blade 20 extending along the central axis of the tank body 10 is arranged in the tank body 10, and the upper end of the rotating shaft 5 is a rotation drive unit 13 and an elevating cylinder 14. Is linked to. Therefore, the rotary shaft 5 can be raised and lowered by the elevating cylinder 14, and can be rotated by the rotary drive unit 13. Further, the stirring blade 20 is fixed to the lower end of the rotating shaft 5, and the stirring blade 20 can be rotated according to the rotation of the rotating shaft 5.

A heating jacket 30 is provided on the outer periphery of the side portion of the tank body 10. The heating jacket 30 heats the inside of the tank body 10 by utilizing the heat possessed by the heat medium circulating inside the heating jacket 30, and is heated by the heat medium so as to be equal to or higher than the evaporation temperature of the solvent in the liquid to be treated. It has been warmed up. A distribution path (not shown) through which the heat medium flows is formed in the heating jacket 30, and the heat medium flowing in from the heat medium inflow port (not shown) circulates in the distribution path in the heating jacket 30 and is a heat medium. The liquid to be treated in the tank body 10 can be heated by being discharged from the outlet (not shown). As the heat medium, for example, steam, hot water, or the like can be used.

As shown in FIG. 1, the vibrating portion 50 includes a vibrating shaft 51, a vibration generating device 52, a sealing portion 53, and a diaphragm 16. That is, the vibration shaft 51 inserts the insertion hole 22 formed in the center of the lower lid 12 from below the tank body 10 and faces the opening 21 formed in the center of the diaphragm 16 (see FIG. 3 described later). It is a rod-shaped member that has been stretched. A vibrating shaft tip portion 51a, which is an upper end of the vibrating shaft 51, is provided with a vibrating plate mounting portion 54 (see FIG. 3 described later) described later, and the vibrating plate 16 is provided via the vibrating plate mounting portion 54. Can be attached to the vibration shaft 51. On the other hand, a vibration generator 52 such as an air vibrator that generates vibration is connected to the vibration shaft base end portion 51b, which is the lower end portion of the vibration shaft 51.

In the filtration drying device 100 according to the embodiment of the present invention, as shown in FIG. 1, the vibration shaft 51 is arranged inside the filtrate discharge pipe 17, and the vibration generator 52 is arranged outside the filtrate discharge pipe 17. It has a structure of That is, the vibration shaft 51 protrudes from the inside of the filtrate discharge pipe 17 to the outside at the bent portion of the filtrate discharge pipe 17, and the vibration shaft base end portion 51b is connected to the vibration generator 52.

The portion of the vibration shaft 51 protruding from the inside of the filtrate discharge pipe 17 to the outside is sealed by a sealing portion 53 so as to prevent the filtrate from leaking from the filtrate discharge pipe 17 through the vibration shaft 51. .. Examples of the sealing portion 53 include a diaphragm, a bellows, a V ring, an O-ring, and the like. Further, below the sealing portion 53, a bearing portion (not shown) that slidably supports the vibrating shaft 51 that moves periodically in the filtrate discharge pipe 17 is provided.

The tilting drive unit 60 tilts the tank body 10 toward the discharge unit 40 provided on the side of the tank body 10, and includes a support portion 61, an inclined leg portion 62, a hydraulic cylinder 63, and a shaft 64. It is a structure to prepare for.

The support portion 61 is a member fixed to the side portion of the tank body 10 and projecting horizontally from the side portion, and abuts on the inclined leg portion 62. The inclined leg portion 62 is a rod-shaped member extended in the vertical direction that supports the tank body 10 together with the leg portion 68 that supports the tank body 10 from below. As shown in FIG. 1, the leg portion 68 is provided directly below the tank main body 10, but the inclined leg portion 62 is provided on the side of the tank main body 10.

Further, a hydraulic cylinder 63 is fixed to the side peripheral surface of the inclined leg portion 62, and the shaft 64 moves upward from the hydraulic cylinder 63 toward the support portion 61 along the extending direction of the inclined leg portion 62. It is extended. The lower end of the shaft 64 is fixed to a piston (not shown) provided in the hydraulic cylinder 63, and the upper end is fixed to the tip of the support portion 61. It is possible to move in the direction. Then, as shown in FIG. 2, when the shaft 64 moves upward, the support portion 61 is lifted from the inclined leg portion 62, and the support portion 61 protruding in the horizontal direction is inclined toward the discharge portion 40. Since the support portion 61 can be tilted by moving the shaft 64 upward in this way, the tank body 10 fixed to the support portion 61 can also be tilted toward the discharge portion 40.

The number of the other leg portions 68 excluding the inclined leg portions 62 that support the tank body 10 is not limited to one, and a plurality of the other leg portions 68 may be provided. Further, the legs 68 are attached to the tank body 10 by pin joining or the like so that the tank body 10 can swing.

Further, each pipe (not shown) connected to the tank body 10 can absorb the change in posture even if the tank body 10 is tilted within the tilting movable range of the tilting drive unit 60. For example, the configuration may be connected by using a flexible joint.

The filtration / drying device 100 having the above configuration can carry out a filtration step, a spreading step, a drying step, a washing step, and a drying step as follows. In this specification, the filtration step, the spreading step, and the drying step take as an example the case where the solid particles (powder and granular material) in the slurry are taken out by using the filtration drying device 100 according to the embodiment of the present invention. , Cleaning process, and drying process will be described.

[Filtration process]
In the filtration / drying device 100, when the slurry is supplied into the tank body 10 from the supply port 11, gas is supplied from the gas supply unit (not shown) via a conduit (not shown) to pressurize the inside of the tank body 10. .. Alternatively, the inside of the tank body 10 may be sucked toward the filtrate discharge pipe 17 to reduce the pressure. In this way, the filtration / drying device 100 applies pressure to the slurry to perform filtration. At this time, the filtrate filtered through the filter cloth 15 is discharged to the outside of the tank body 10 from the filtrate discharge pipe 17 provided in the lower part of the tank body 10. In the filtration drying device 100, when pressure is applied to the slurry, the stirring blade 20 is moved above the slurry (above the tank body 10) by the elevating cylinder 14.

When the filtration step is carried out as described above, the solid content (cake) of the wet slurry remains and is deposited on the filter cloth 15 in the tank body 10.

[Expansion process]
In the above-mentioned filtration step, cracks may occur that penetrate from the cake surface to the filtration surface, and the pressurized gas or the like may short-pass and the filtration may not proceed properly. In such a case, it is necessary to perform a process (spreading step) of smoothing the cake surface using the stirring blade 20.

Specifically, after the filtration step for a certain period of time, the stirring blade 20 that has moved upward in the tank body 10 is lowered by the elevating cylinder 14, and is placed in the cake layer deposited on the filter cloth 15. Invade the stirring blade 20. Then, the rotary drive unit 13 rotates the rotary shaft 5 at a constant speed to rotate the stirring blade 20 connected to the rotary shaft 5 at a constant speed. By operating the stirring blade 20 in this way, the cracks described above can be extinguished, and more water contained in the cake layer can be squeezed out.

[Washing process]
Next, it is necessary to carry out a washing step in order to remove foreign substances (impurities such as unreacted substances in the residual mother liquor) existing in the cake. Here, the cleaning step includes replacement cleaning and stirring cleaning, and these are performed selectively or in combination depending on the properties of the liquid to be treated and the like.

When performing replacement cleaning, in the filtration drying device 100, the cleaning liquid is sprayed from a nozzle portion (not shown) provided at the tip of the cleaning liquid pipe to clean the cake. As a result, the foreign matter in the cake is discharged from the filtrate discharge pipe 17 together with the cleaning liquid. When performing replacement cleaning, the stirring blade 20 is fixed while being positioned at the upper surface position of the cake.

On the other hand, when performing stirring cleaning, the cleaning liquid is sprayed from the nozzle portion of the cleaning liquid pipe, and the cleaning liquid is stored in the tank body 10 until the amount reaches a predetermined amount. When the cleaning liquid is stored up to a predetermined amount, the rotation drive unit 13 is operated to rotate the stirring blade 20 to make the cake into a slurry again. The stirring blade 20 is arranged at a predetermined position in the stored cleaning liquid and is rotationally driven at a predetermined speed. Then, the above-mentioned filtration step is performed again.

[Drying process]
Next, a drying step of drying the cake washed by the above-mentioned washing step will be described. First, in the filtration drying device 100, the inside of the tank body 10 is depressurized, the heat medium is supplied into the heating jacket 30 from the heat medium inflow port, and the side wall of the tank body 10 is heated by the heat of the heat medium. Further, in the tank body 10, the stirring blade 20 is moved up and down while rotating at a predetermined speed. By carrying out the drying step by the filtration drying device 100 in this way, the powder (dried cake) deposited on the filter cloth 15 is stirred and mixed by the stirring blade 20, and the side wall of the tank body 10 is used. It will receive the heat of the heat medium transferred through. Then, as the drying of the cake progresses, the stirring blade 20 is rotated at a constant height position from the cake layer to further dry the cake. After that, the inside of the tank body 10 is returned to atmospheric pressure, the supply of the heat medium to the heating jacket 30 is stopped, and the drying step is completed.

By vibrating the diaphragm 16 in the drying step, the cake or powder adhering to the filter cloth 15 can be made to flow to promote the drying.

[Discharge process]
Next, the discharge process of the dried cake (powder) dried by the above-mentioned drying step will be described with reference to FIG. As shown in FIG. 2, the filtration / drying device 100 discharges powder from the discharging section 40 by vibrating the diaphragm 16 in the filtering / drying device 100 with the tank body 10 tilted toward the discharging section 40 by a predetermined angle. It is configured to discharge. The angle at which the filtration drying device 100 is tilted can be, for example, 5 degrees with respect to the horizontal direction of the diaphragm 16. The tilting angle is not limited to 5 degrees, but is an angle that facilitates discharge of the powder deposited on the filter cloth 15 from the discharge port, and is a range of angles that allow the filtration / drying device 100 to be tilted (the tilting angle is not limited to 5 degrees). Although not particularly limited, it is appropriately set, for example, in the range of 0 ° to 30 °, preferably 0 ° to 15 °).

When the drying step is completed, in the filtration drying device 100, as shown in FIG. 2, the shaft 64 in the hydraulic cylinder 63 is operated so as to move upward, so that the tank body 10 is moved via the support portion 61. It can be tilted toward the discharge unit 40 side. With the tank body 10 tilted in this way, the vibration generator 52 is operated to vibrate the diaphragm 16 via the vibration shaft 51, and the rotary drive unit 13 is operated to rotate the stirring blade 20. The stirring blade 20 is arranged so that a gap having a predetermined interval (for example, 5 mm to 10 mm) is formed between the rotating stirring blade 20 and the surface of the filter cloth 15.

In this discharge step, with the tank body 10 tilted, the vibration generator 52 is operated to vibrate the vibration plate 16 via the vibration shaft 51, and the rotation drive unit 13 is operated to rotate the stirring blade 20. However, the rotation of the stirring blade 20 is not essential, and the vibration generator 52 is operated with the tank body 10 tilted to vibrate the vibration plate 16 via the vibration shaft 51. If the powder can be discharged only by itself, it is not necessary to rotate the stirring blade 20.

(Mounting structure of filter cloth and diaphragm)
By the way, in order to properly carry out the above-mentioned filtration step, spreading step, drying step, cleaning step, and drying step, the surface of the filter cloth 15 arranged on the diaphragm 16 should be uniformly flat. Is preferable. Therefore, the attachment structure of the filter cloth 15 and the diaphragm 16 in the filtration drying device 100 according to the embodiment of the present invention will be described with reference to FIG. FIG. 3 is a partial cross-sectional view showing an example of the mounting structure of the filter cloth 15 and the diaphragm 16 in the filtration drying device 100 according to the embodiment of the present invention. In FIG. 3, the structure in the range from the center of the lower lid 12 to the right end portion is illustrated, and the structure from the center of the lower lid 12 to the left end portion is omitted.

The diaphragm 16 is a perforated plate that vibrates the filter cloth 15 arranged on the main surface, and has an annular shape having dimensions corresponding to the inner peripheral shape of the tank body 10. The diaphragm 16 can be made of, for example, a metal such as stainless steel and Hastelloy. That is, the filter cloth 15 covers the main surface of the diaphragm 16, and the filter cloth 15 can be vibrated by the vibration of the diaphragm 16. As shown in FIG. 3, the diaphragm 16 is attached to the vibration shaft 51 via the diaphragm attachment portion 54. That is, an opening 21 for inserting the diaphragm mounting portion 54 is formed in the center of the diaphragm 16, and the edge portion 16a of the opening 21 is on the lower side of the tank body 10 than the main surface of the diaphragm 16. It has a bent shape so as to be located at. Then, as shown in FIG. 3, the diaphragm 16 can be mounted on the vibration shaft 51 by fixing the edge portion 16a of the opening 21 with the diaphragm mounting portion 54.

(Structure of vibrating plate mounting part)
The vibrating plate mounting portion 54 is a member that protrudes upward along the stretching direction of the vibrating shaft 51, and is an annular shape that protrudes horizontally (in the radial direction of the vibrating shaft 51) at the tip of the vibrating plate mounting portion 54. Has a flange portion 54a of the above.

An annular lower holding portion 54b formed by Hastelloy is provided below the flange portion 54a, and the diaphragm mounting portion 54 is an opening of the diaphragm 16 between the lower surface of the flange portion 54a and the lower holding portion 54b. The edge portion 16a of 21 is sandwiched, and the diaphragm 16 is attached to the vibration shaft 51. A pressing ring (bearing nut) 55 is provided below the lower pressing portion 54b, and the lower pressing portion 54b can be fixed by narrowing the pressing ring 55.

Here, as described above, the diaphragm 16 has an opening 21 formed in the center, and the edge portion 16a of the opening 21 is located below the main surface of the diaphragm 16 on the lower side of the tank body 10. It is bent. The diaphragm mounting portion 54 sandwiches the edge portion 16a of the opening 21 of the diaphragm 16 between the flange portion 54a and the lower holding portion 54b with respect to the diaphragm 16 having such a shape. Is attached to the diaphragm mounting portion 54. Therefore, the diaphragm mounting portion 54 can position the mounting position of the diaphragm 16 downward as compared with the case where the edge portion 16a of the opening 21 of the diaphragm 16 is not bent. The arrangement of the entire landing portion 54 can be lowered.

Since the arrangement of the entire diaphragm mounting portion 54 can be lowered in this way, it is possible to prevent the end surface of the tip portion of the diaphragm mounting portion 54 and the upper surface of the flange portion 54a from becoming higher than the main surface of the diaphragm portion 16. The arrangement of the diaphragm mounting portion 54 can be adjusted so that the end surface of the tip end portion of the diaphragm mounting portion 54 and the upper surface of the flange portion 54a are on the same surface as the main surface of the diaphragm portion 16. Therefore, since a step is not formed between the diaphragm 16 and the diaphragm mounting portion 54, the filter cloth 15 can be uniformly flat without wrinkles when placed on the diaphragm 16. By eliminating the wrinkles, it is possible to prevent the object to be treated from accumulating in the wrinkled portion, so that it is possible to surely perform cleaning and the like, and it is possible to prevent the object to be treated from remaining at the time of discharge. It also facilitates cleaning of the filter cloth. Further, since the step is not formed, it is possible to suppress the concentration of force on a part of the filter cloth during stirring by the stirring blade, and it is possible to suppress the breakage of the filter cloth.

In the filtration / drying device 100 according to the embodiment of the present invention, the diaphragm mounting portion 54 is configured to hold the diaphragm 16 so as to be sandwiched between the flange portion 54a and the lower holding portion 54b. However, the configuration for holding the diaphragm 16 is not limited to this as long as the vibration generated by the vibration generator 52 can be appropriately transmitted to the diaphragm 16 via the vibration shaft 51. For example, a bolt may be used instead of the lower holding portion 54b, and the edge portion 16a of the opening portion 21 of the diaphragm 16 may be fixed to the lower surface of the flange portion 54a by the bolt. In this way, the flange portion 54a functions as a mounting surface for mounting the edge portion 16a of the opening 21 of the diaphragm 16.

On the other hand, as shown in FIG. 3, the edge portion on the outer peripheral side of the diaphragm 16 and the edge portion on the outer peripheral side of the filter cloth 15 exert a compressive force acting between the lower lid 12 and the flange portion 10a on the tank body side. It is used and fixed by the fixing portion 19. Specifically, a ring-shaped flange portion 10a on the tank body side is provided around the side portion of the tank body 10 on the bottom surface side so as to be parallel to the lower lid 12. The lower lid 12 and the flange portion 10a on the tank body side are fastened by a fastening portion composed of a bolt 70 and a nut 71. The fastening portion is not limited to the configuration including the bolt 70 and the nut 71, and may be any one that fastens the lower lid 12 and the flange portion 10a on the tank body side and exerts a compressive force between them. Further, the fixing portion 19 is sandwiched between the flange portion 10a on the tank body side and the lower lid 12.

That is, on the upper surface of the lower lid 12, an annular fixing portion 19 formed of, for example, a synthetic resin such as a fluororesin is provided along the outer periphery of the lower lid 12, and the flange portion 10a on the tank body side is provided. The fixing portion 19 is sandwiched between the flange portion 10a on the tank body side and the lower lid 12 by the compressive force acting by fastening the bolt 70 and the nut 71 provided at the outer peripheral end portion and the outer peripheral end portion of the lower lid 12. It has become. Further, in order to allow the fixing portion 19 to be arranged at a predetermined position, the predetermined region on the inner peripheral side of the flange portion 10a on the tank body side is cut out upward. Further, the lower lid 12 has a shape cut downward so as to form a step at a position where an end portion on the inner peripheral side of the fixing portion 19 is arranged. Then, the fixing portion 19 is housed in the region cut in each of the flange portion 10a on the tank body side and the lower lid 12.

A first sealing portion 32 is provided between the fixing portion 19 and the lower lid 12, and the first sealing portion 32 seals the space between the fixing portion 19 and the lower lid 12 in a watertight and airtight manner. .. Further, the upper surface of the fixing portion 19 and the flange portion 10a on the tank body side sandwich the outer peripheral edges of the filter cloth 15 and the diaphragm 16 so as to fix both. Further, in order to hold the filter cloth 15 in a state where the horizontal surface is maintained by applying a certain amount of tension, the edge portion of the filter cloth 15 is folded into the recess formed on the upper surface of the fixing portion 19 and fitted into the recess. It is fixed by the fitting portion 33.

Further, as shown in FIG. 3, a second sealing portion 34 is provided on the outer peripheral side of the fixing portion 19 at a portion where the upper surface of the fixing portion 19 and the lower surface of the flange portion 10a on the tank body side come into contact with each other. The second sealing portion 34 seals the space between the fixing portion 19 and the flange portion 10a on the tank body side in a watertight and airtight manner.

As described above, the filter cloth 15 and the diaphragm 16 utilize the compressive force acting between the lower lid 12 and the tank body side flange portion 10a between the tank body side flange portion 10a and the fixing portion 19. It is configured to be sandwiched and fixed by. Therefore, the filter cloth 15 and the diaphragm 16 can be removed only by releasing the fastening of the fastening portion, so that the filter cloth 15 and the diaphragm 16 can be easily replaced.

Further, for example, a resin mesh portion (not shown) may be arranged between the diaphragm 16 and the lower lid 12 in which a plurality of sheets are laminated. When the mesh portion is arranged between the diaphragm 16 and the lower lid 12 in this way, the diaphragm 16 can also be supported by the surface of the lower lid 12 via the mesh portion.

From the above description, many improvements and other embodiments of the present invention will be apparent to those skilled in the art. Therefore, the above description should be construed as an example only and is provided for the purpose of teaching those skilled in the art the best aspects of carrying out the present invention. The details of its structure and / or function can be substantially changed without departing from the spirit of the present invention.

INDUSTRIAL APPLICABILITY The present invention is widely used when arranging a filter cloth on a diaphragm in an apparatus for processing a plurality of processes such as filtration, cake cleaning, and drying performed in the manufacturing process of chemical products, pharmaceuticals, electronic materials, and the like. Can be done.

5 Rotating shaft 10 Tank body 10a Flange part on the tank body side 11 Supply port 12 Lower lid 13 Rotating drive part (drive part)
14 Elevating cylinder (drive unit)
15 Filter cloth 16 Vibration plate 16a Edge 19 Fixed part 20 Stirring blade 21 Opening 22 Insertion hole 40 Discharge part 50 Vibration part 51 Vibration shaft 51a Vibration shaft tip 52 Vibration generator 54 Vibration plate attachment part 54a Flange part 54b Lower holder Part 60 Tilt drive part 70 Bolt (fastening part)
71 Nut (fastening part)
100 Filtration drying device

Claims (4)

The tank body to which the liquid to be treated is supplied and
A filter cloth for filtering the liquid to be treated and
A discharge section provided on the side of the tank body for discharging the cake or its dried matter deposited on the filter cloth, and a discharge section thereof.
An inclined drive unit that tilts the tank body toward the discharge unit,
A diaphragm that vibrates the filter cloth arranged on the main surface and has an opening formed in the center, and is bent so that the edge of the opening is located below the main surface of the tank body. When,
A vibrating shaft extending from the bottom side of the tank body toward the opening of the diaphragm and having a diaphragm mounting portion at the tip of the tank body for mounting the edge of the opening of the diaphragm.
A vibration generator that vibrates the diaphragm via the vibration axis is provided.
A filtration / drying device in which the end surface of the tip end portion of the diaphragm mounting portion is formed on the same surface as the main surface of the diaphragm. The tip portion of the vibrating plate mounting portion has a flange portion protruding in the radial direction of the vibrating shaft.
The upper surface of the flange portion is formed on the same surface as the end surface of the tip portion, and the lower surface of the flange portion has a mounting surface for mounting the edge portion of the opening portion of the diaphragm portion. Item 1. The filtration / drying device according to item 1. A rotating shaft extending along the central axis of the tank body and
The stirring blade fixed to the rotating shaft and
The filtration / drying device according to claim 1 or 2, further comprising a drive unit for rotating and moving the rotating shaft up and down. The lower lid arranged below the diaphragm while closing the bottom surface of the tank body,
Around the side portion on the bottom surface side of the tank body, the flange portion on the tank body side protruding so as to be parallel to the lower lid,
A fastening portion for fastening the lower lid and the flange portion on the tank body side, and a fastening portion.
It is arranged between the lower lid and the flange portion on the tank body side, and the compressive force acting by fastening the lower lid and the flange portion on the tank body side by the fastening portion causes the outer periphery of the diaphragm. The filtration drying device according to any one of claims 1 to 3, further comprising a flange portion and a fixing portion for fixing the peripheral edge portion of the filter cloth.

Images