JP2960202B2 - Packed bed filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration device using an aggregate of long fiber bundles as a packed bed, and more particularly, to a support comprising a mesh plate or the like on which long fiber bundles are mounted, and a filter installed in a filtration tower body. The present invention relates to a packed bed type filtration device which can be taken out independently of a body part and facilitates replacement of long fiber bundles.

[0002]

2. Description of the Related Art The present applicant has previously described Japanese Patent Application Laid-Open No. 63-3151.
No. 10 and Japanese Unexamined Patent Publication No. 2-149305, tap water for industrial works, sewage, river water, lake water, coagulated sedimentation supernatant water, intermediate water for various processes, treated water of biological treatment equipment or liquid containing valuables, sake, oil, etc. A filtration tower using a long fiber bundle capable of removing suspended substances contained in the stock solution at a high flow rate was disclosed.

[0003] As shown in FIG. 7, the filtration tower using the long fiber bundle has a perforated plate 32 to which the lower end of the long fiber bundle 31 is attached at the lower portion inside the filtration tower main body 30. It has a structure in which the upper end is a free end, and a long fiber bundle 31 is erected on the whole inside of the filtration tower main body 30. When filtering a stock solution containing suspended substances, the stock solution is filtered from the stock solution inlet pipe 33 into the filtration tower. After flowing into the main body 30, the undiluted solution passes through the long fiber bundle 31 in a downward flow, the suspended matter in the undiluted solution is captured in the gap of the long fiber bundle 31, and the filtrate is discharged from the filtrate outflow pipe 34. It is intended to be taken out.

[0004] In the case of the packed bed type filtration tower using the long fiber bundle 31, the pressure loss is not so large, the suspended substance can be captured at a high flow rate, and the lower end of the long fiber bundle 31 can be viewed at the lower end. Since it is fixed to the plate 32, even if compressed air or backwash water is caused to flow into the filter tower main body 30 at the time of backwashing with a high flow rate ascending flow, the long fiber bundle 31 is like a kind of blow down. Since the long-fiber bundle 31 oscillates due to the backwashing flow without flowing out of the filtration tower only by extending, it has a great advantage that trapped suspended matter can be effectively removed. It can be played.

On the other hand, in the case of this packed bed type filtration tower, when it is necessary to replace the long fiber bundle, the steps are performed as shown in FIGS. That is, first, the upper end plate 35 forming the filtration tower main body 30 is removed from the body 36 using a chain block or the like (FIG. 8).
Is fixed to the torso 3 using set bolts.
After being fixed to the flange at the lower end of 6, the body 36 is lifted and moved together with the eye plate 32 by a chain block or the like (FIG. 9). Then, the body 36 forming the filtration tower main body 30 is turned upside down using an auxiliary rope or the like (FIG. 10), so that the long fiber bundle 31 does not hang downward. The plate 32 is separated, and only the eye plate 32 is lifted and moved. Then, the perforated plate 32 is mounted on the filter medium replacement work stand 37 and replaced with a new long fiber bundle 31 (FIG. 11), and after replacement, is incorporated into the main body of the filtration tower in the reverse process.

[0006]

As described above, in order to replace a long fiber bundle that has been used in the past, it is necessary to remove a face plate together with a body forming a filtration tower. Therefore, there is a problem that the time required for the replacement is considerably required. In particular, the lifting of a relatively heavy trunk may even be dangerous. In addition, in the case of a conventional filtering device using a long fiber bundle, the end of the long fiber bundle is eccentric to a flame of a candle during the filtration because a partition or the like that partitions the inside of the filtration tower is not provided. There is
There was a risk of affecting the filtration performance.

Accordingly, the present invention solves the disadvantages of the conventional packed bed type filtration apparatus using a long fiber bundle, and the support having the long fiber bundle attached from the inside of the filtration tower body is independent of the body. It can be detached, eliminating the problems associated with the conventional detachment with the body, and by attaching a vertical partition plate radially to the outer periphery of the long sleeve fixed to the support. It is an object of the present invention to provide a packed bed filtration device in which the inside of a filtration tower is divided into a plurality of compartments to prevent the tip of a long fiber bundle from being eccentric.

[0008]

In order to achieve the above object, the structure of the filtration device of the present invention is described in detail. The invention according to claim 1 is characterized in that a long fiber bundle is provided on a support provided at a lower portion in a filtration tower. In a packed bed type filter device in which the lower end of the filter is attached relatively densely to form a packed bed with an aggregate of the long fiber bundles, a guide post vertically vertically fixed to a substantially central portion in the main body of the filtration tower. A long sleeve is loosely fitted to an outer peripheral portion of the long sleeve so as to be vertically movable, and a lower end portion of the long sleeve is fixed to a substantially central portion of the support, and a lifting bracket protruding from an upper portion of the long sleeve. A packed bed type filtration apparatus characterized in that a support having a long fiber bundle attached thereto can be taken out of the main body of the filtration tower together with a long sleeve by using the above method.

The invention according to claim 2 is characterized in that a vertical partition plate for dividing the inside of the main body of the filtration tower is radially provided on the outer peripheral portion of the long sleeve. Device, and the invention according to claim 3 is:
3. The packed bed type filtration apparatus according to claim 1, wherein a lower end of the guide post is fixed to a top plate of a baffle plate attached to a lower part in the main body of the filtration tower.

According to the filtration device of the present invention, it is not necessary to separate the body constituting the main body of the filtration tower when exchanging the filter medium composed of the long fiber bundle, and the support on which the long fiber bundle is attached is independent of the body. As a result, the work of replacing the filter medium is greatly reduced, and the time required for replacement can be reduced. Further, when a vertical partition plate is attached to the outer peripheral portion of the long sleeve as in claim 2,
The eccentricity of the long fiber bundle can be prevented, and the filtration performance is improved as compared with the related art.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a packed bed type filtration apparatus according to the present invention. FIG. 1 is a schematic cross-sectional view showing an embodiment of the apparatus of the present invention, FIG. 2 is a partial plan view showing an example of a support for mounting a long fiber bundle, and FIGS. It is explanatory drawing which shows an example of the exchange operation | work of a bundle.

In FIG. 1, reference numeral 1 denotes an upper head plate 2, a body 3, and a lower head plate 4.
The upper end plate 2 has a stock solution inlet nozzle 5, a backwash air exhaust nozzle 6, and spare nozzles 7 and 8.
Are arranged respectively. A filtrate outlet nozzle 9 is provided on the lower surface of the lower head plate 4. Reference numeral 10 denotes a guide post, which is vertically set up and fixed substantially at the center of the inside of the filtration tower main body 1, and a male screw is screwed on the outer peripheral portion of the upper end of the guide post 10. In the illustrated embodiment, the lower end of the guide post 10 is made to penetrate the top plate 12 of the baffle plate 11 attached to the lower end plate 4 and is fixed with the nut 13. For example, several angle plates (not shown) for fixing the guide posts are mounted in the lower end plate 4, and the guide posts 10 are vertically set at substantially the center of the inside of the filtration tower main body 1 using the angle plates. It may be provided.

Reference numeral 14 denotes a long sleeve having a diameter capable of loosely fitting on the outer peripheral portion of the guide post 10, and reference numeral 15 denotes an eye which fixes the vicinity of the lower end of the long sleeve 14 by means such as welding. 1 shows a support made of a plate. That is, in the apparatus of the present invention, the support 15 is not structured to be sandwiched between the body 3 and the lower end plate 4 as in the conventional case, but is a length that is loosely fitted to the outer peripheral portion of the guide post 10 so as to be vertically movable. It is structured to be fixed to the outer periphery of the lower end of the measuring sleeve 14. Therefore, in order to support the support 15 in the main body 1 of the filtration tower, a ring-shaped receiving seat 16 is provided near the lower end of the body 4. In order to support the support 15 in the filter tower main body 1, besides the method using the receiving seat 16, for example, a ring-shaped stopper (not shown) is protruded near the lower end of the guide post 10. If this is done, the lower end of the long sleeve 14 is locked by the stopper, so that the support 15 is also supported in the filtration tower main body 1. Also, the stopper 16 and the stopper may be used together.

Reference numeral 17 denotes a long fiber bundle whose lower end is fixed by the support body 15 and whose upper end is a free end. The aggregate of the long fiber bundles 17 constitutes a packed bed in the filtration tower body 1. You. Reference numeral 18 denotes a lifting bracket protruding from the upper portion of the long sleeve 14, which hooks the tip of the chain block when lifting the support 15 from the inside of the filtration tower main body 1. Reference numeral 19 denotes a nut which is screwed into the male screw threaded on the outer peripheral portion of the distal end of the guide post 10. The elongated sleeve 14 provided with the support 15 is loosely fitted on the outer peripheral portion of the guide post 10. By tightening the nut 19, the support 15 is fixed in the filtration tower main body 1.

Reference numeral 20 denotes an outer peripheral portion of the long sleeve 14,
Shows a vertical partition plate attached radially by means such as welding,
The filtration chamber in the filtration tower main body 1 is divided into a plurality by the vertical partition plate 20. In the illustrated embodiment, the vertical partition plate 20 is shifted in phase by 60 degrees with respect to the long sleeve 14 so as to project a total of six sheets. May be shifted so that twelve vertical partition plates 20 are radially attached to the outer peripheral portion of the long sleeve 14.

In addition, reference numeral 21 in the figure denotes an upper head plate 2 and a trunk 3
The upper end plate 2 is removed from the body 3 by removing a bolt fixing the flange 21.
Can be pulled apart. In the illustrated embodiment, the flange between the lower end plate 4 and the body 3 is not shown. However, according to the apparatus of the present invention, it is not necessary to remove the body 3 when replacing the filter medium. This is because the body 3 and the lower end plate 4 can be made as an integral body. In this limit, a flange portion is provided between the upper and lower end plates 4 and the body 3 of the filter tower main body 1. Of course, it is good.

The packed bed type filtration apparatus of the present invention has the above-described configuration. Hereinafter, a process for replacing an old long fiber bundle will be described. First, as shown in FIG. 3, a flange portion 2 fixing the upper end plate 2 and the body portion 3 is formed.
1 and remove the upper head plate 2 from the chain block 22.
To lift and move.

Next, after removing the nut 19 screwed to the tip of the guide post 10, the chain block 22 is moved to the upper part of the trunk 3 which has been opened, and is protruded from the upper part of the long sleeve 14. The leading end of the chain block 22 is hooked to the lifting metal fitting 18. Thereafter, the chain block 22 is raised to lift the long sleeve 14 and the support 15 fixed thereto. Long fiber bundle 1
Since the lower end of 7 is attached to the support 15 as described above, the assembly of the long fiber bundle 17 is also pulled up with the lifting of the long sleeve 14 (FIG. 4).

During the lifting operation, the guide post 10 located substantially at the center of the filtration tower main body 1 acts as a kind of guide, so that the support 15 is prevented from swinging when it is lifted. It can be smoothly lowered even when it is set again.

Then, after the lower end of the long sleeve 14 is lifted up to the upper part of the body 3 forming the filtration tower main body 1, the lower sleeve is moved in the horizontal direction, and a rope 23 is tied up to a proper position of the support 15 and pulled up. The measuring sleeve 14 is turned upside down (FIG. 5). Next, the support 15 is placed on a filter medium replacement work stand 24 prepared in advance and replaced with a new long fiber bundle 17 (FIG. 6). It is to be incorporated into.

[0021]

The packed bed filtration apparatus of the present invention has the above construction and operation, and it is not necessary to disassemble and lift up the body constituting the main body of a relatively heavy filtration tower as in the prior art. The time required for replacement can be significantly reduced, and the time required for replacement can be significantly reduced. Further, when a vertical partition plate for dividing the inside of the filtration tower body is attached to the long sleeve, it is possible to prevent the tip of the long fiber bundle from being eccentric, and to improve the filtration performance of the long fiber bundle compared to the conventional one. It is possible to provide a packed bed type filtration device using the same.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing one embodiment of a packed bed type filtration device of the present invention.

FIG. 2 is a partial plan view of a support.

FIG. 3 is an explanatory view when an upper head plate is lifted upward by a chain block.

FIG. 4 is an explanatory diagram when a long sleeve is lifted from a trunk having an upper surface opening.

FIG. 5 is an explanatory diagram when the long sleeve pulled out from the trunk is inverted.

FIG. 6 is an explanatory diagram when a support is placed on a filter medium replacement work base.

FIG. 7 is a schematic sectional view showing an example of a conventional filtering device using a long fiber bundle.

FIG. 8 is a work process diagram when a long fiber bundle is replaced in a conventional filtration device.

FIG. 9 is a work process diagram when a long fiber bundle is replaced in a conventional filtration device.

FIG. 10 is a work process diagram when a long fiber bundle is replaced in a conventional filtration device.

FIG. 11 is a work process diagram when a long fiber bundle is replaced in a conventional filtration device.

[Explanation of symbols]

1: Filtration tower main body 2: Upper end plate 3: Body 4: Lower end plate 5: Stock solution inlet nozzle 6: Backwash air exhaust nozzle 7: Spare nozzle 8: Spare nozzle 9: Filtrate outlet nozzle 10: Guide post 11: Baffle plate 12: Top plate 13: Nut 14: Long sleeve 15: Support body 16: Receiving seat 17: Long fiber bundle 18: Lifting bracket 19: Nut 20: Vertical partition plate 21: Flange

──────────────────────────────────────────────────の Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) B01D 24/00-24/48 B01D 39/02-39/06 B01D 41/02 C02F 3/02-3 / Ten

Claims (3)

(57) [Claims] 1. A packed bed type filtration apparatus in which a lower end of a long fiber bundle is relatively densely attached to a support provided at a lower portion in a filtration tower, and a packed bed is formed by an aggregate of the long fiber bundle. A long sleeve is freely and vertically movably fitted to the outer peripheral portion of a guide post that is vertically set up and fixed substantially at the center of the filtration tower body, and the vicinity of the lower end portion of the long sleeve is substantially supported by the support. It is configured to be able to be taken out of the main body of the filtration tower together with the long sleeve together with the long fiber bundle by using a lifting bracket protruding from the upper part of the long sleeve, fixed to the central portion. Characterized packed bed type filtration device. 2. The packed bed type filtration device according to claim 1, wherein a vertical partition plate for dividing the inside of the filtration tower main body is radially provided on an outer peripheral portion of the long sleeve. 3. The packed bed type filtration device according to claim 1, wherein a lower end of the guide post is fixed to a top plate of a baffle plate attached to a lower portion in the main body of the filtration tower.