KR900006378Y1 - Filter press type dryer - Google Patents

Abstract

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Description

Filter plate of filter press type dehydrator

1 is a side view showing the structure of the dehydrator using the filter plate of the dehydrator of the present invention.

2 (a) is a front view showing the structure of the conventional filter plate and the support ring,

Figure 2 (b) is an enlarged cross-sectional view of the recess portion.

Figure 3 is a front view showing the structure of the filter plate and the support ring constructed in accordance with the present invention.

4 is a partially enlarged cross-sectional view taken along line A-A of FIG.

* Explanation of symbols for main parts of the drawings

6: filter plate support rail 8: pressure plate

9: hydraulic cylinder 10: cylinder rod

11: filtrate 12: filtrate drainage pipe

13: filter plate conveying conveyor 22,32: filtration protrusion

25,35 drainage passage 35a drainage passage

26,36: support plate for filter plate 27,37: support bracket

28,38: support roller 29,39: transfer plate

30: coupling protrusion 30a: coupling groove

The present invention relates to an improvement in the filter plate structure of the dehydrator, such as the filter plate of the filter press type dehydrator, more specifically, for industrial and wastewater treatment.

A dehydrator of the type commonly called a filter press is a series of filter cloths covered with filter cloth, and sludge is introduced and pressurized to produce a cake composed of solid components of sludge from which the filtrate is discharged. It is of the form to discharge.

However, in the conventional dehydrator, the shape of the filter plate was complicated and not only difficult to manufacture, but also required a large number of filter plates due to the small filtration volume. The shape of the filtration protrusions was rectangular in cross section, which resulted in poor circulation efficiency of the sludge. Since the ring was formed in the center, there was a problem that the asymmetrical movement during separation of the filter plate prevented the operation of the dehydrator, and the filtrate could not be accumulated due to its structure, so that the filtered filtrate was discharged directly under the breaker.

Accordingly, an object of the present invention is to provide a filter plate of the filter press type dehydrator which solves all of the above-mentioned conventional problems.

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

1 is a side view showing the structure of a filter press type dehydrator, which is identical in appearance to a conventional dehydrator except for a filter plate and a structural change.

The sludge introduced into the dehydrator through the sludge pump P from the settling tank (not shown) is filtered by being repeatedly pressurized by the pressure tank T.

The filter press type dehydrator has an outer shape consisting of a first end plate 1 and a second end plate 2 and a first frame 3 and a second frame 4 connecting therebetween, The support part 5 is fixed.

A filter plate support rail 6 is provided on the upper part of the first frame 3 so that a plurality of filter plates F are slid and suspended, and a sludge introduction pipe 7 for introducing sludge into the dehydrator is provided on the first end plate 1 side. ) Is connected to the second end plate (2) side is provided with a pressure plate (8) for adhering each filter plate (F) in close contact with each other, and an inlet cylinder (9) and a cylinder rod (10) providing pressure thereto.

The filtrate channel 11 and the filtrate drainage pipe 12 for discharging the filtered filtrate are integrally provided below the filter plate F, and are driven by the drive motor 14 at the upper side to separate the filter plate F. The filter plate conveying conveyor 13 which transfers the filter plate F at predetermined intervals is provided.

Each filter plate F is surrounded by a filter cloth (not shown) and is integrally pressed by the pressure plate 8, and each filter plate F has a sludge passage described later to form one filtering volume as a whole. do.

After the pressurized tank (T) is repeatedly pressurized and the filtrate is discharged, only a cake consisting of solid components remains in the filtration volume.

Then, the hydraulic cylinder 9 is retracted to retract the pressure plate 8, and then the driving motor 14 is driven. When the filter plate conveying conveyor 13 rotates, each filter plate F is fixed by a hook (not shown). Separated by intervals.

Next, the cake between the respective filter plates F is dropped below the dehydrator and taken out.

FIG. 2 (a) is a front view showing the structure of the conventional filter plate F, and FIG. 2 (b) is an enlarged sectional view of the main part.

The filter plate is a press-molded synthetic rubber having strong chemical durability on both sides of the reinforcing iron plate 21, and the conventional filter plate F includes a plurality of filter projections 22 having a rectangular cross section on both sides, and adjacent filter plates are in close contact with each other. Coupling protrusion 30 and the coupling groove (30a) was formed was composed of a filter cloth not shown.

The sludge passage 23 is provided in the filter plate F so that the sludge introduced from the sludge introduction pipe 7 flows into the filtration volume formed by the respective filter plates F, and a plurality of support blocks 24 are formed to closely contact each other. And it was made to maintain the space | interval of the filter volume between each filter plate F at the time of pressurization.

The sludge passage 23 is provided in the filter plate F so that the sludge introduced from the sludge introduction pipe 7 flows into the filtration volume formed by the respective filter plates F, and a plurality of support blocks 24 are formed to closely contact each other. And it was made to maintain the space | interval of the filter volume between each filter plate F at the time of pressurization.

The lower portion of the filter plate (F) is provided with one or a plurality of drainage paths 25 are formed so that the filtrate of the sludge is discharged when pressurized.

The support ring 26 is coupled to the upper portion of the filter plate (F) by a screw or the like to suspend the filter plate (F) by hanging on the filter plate support rail (26).

The filter plate support ring 26 has two support ring brackets 27, each of which has a lower portion screwed to the filter plate F, and a support roller attached to an upper end thereof and in sliding contact with the filter plate support rail 6; ) And the above-mentioned support ring brackets 27 are hooked to the hook 13a of the filter plate conveying conveyor 13 to separate each filter plate F by a predetermined interval when separating the filter plate F. Consists of a feed pin (29).

The conventional filter plate described above has various problems as follows.

First, since the coupling protrusion 30 and the coupling groove 30a are provided in order for the cross section of the filter plate F to be in close contact with the adjacent filter plate F, the shape is complicated and difficult to manufacture and handle, and the coupling protrusion 30 is well formed. It is broken.

Second, when the filtration projection 22 has a rectangular cross section and the sludge is introduced and pressurized, the solid component of the sludge blocks the filtration projections 22, thereby lowering the filtration efficiency.

Third, since the drainage passage 25 is directly connected to the lower side of the filter plate (F), it is not possible to provide a filtrate channel that can accumulate the filtrate after the separation of the filter plate (F) due to the problem of the discharge of the cake, to provide this filter plate (F) If only one side of the drainage 25 is installed, the filtrate discharge is reduced, so that the filtration time is consumed for a long time.

Fourth, since the support ring 26 is configured and coupled to the filter plate (F) separately, it is complicated to manufacture, and since only one feed pin 29 is provided in the center, the traction force of the hook 13a is unbalanced when the filter plate is separated from the support roller ( 28 is caught by the filter plate support rail 6, so that the filter plate transfer may be jammed.

3 and 4 are views showing the filter plate structure of the present invention for solving the conventional problems as described above, Figure 3 is a front view, Figure 4 is a partially enlarged cross-sectional view.

In the drawings, members similar to those of the conventional configuration are used by adding 10 to the member number (that is, 30 units), and a separate description except for features is omitted.

The characteristics of the filter plate F 'of the present invention are characterized by the shape of the filtration protrusion 32, the two support rings 36, the curved protrusion R of the rim of the filter plate F', the drain passage 35a and the drain pipe. 40 is provided.

The filtration protrusion 32 of the present invention has a high filtration efficiency because the solid component of the sludge is not blocked by a circular shape.

The support ring 36 of the present invention includes a support bracket 37 formed integrally with the reinforcing steel plate 31, a roller block 38a welded or screwed thereto, a support roller 38, and a transfer pin. It is composed of (39), the production and assembly of the filter plate, as well as the guide plate of the filter plate (F ') and when the separation of the filter plate (F) is towed to both sides in a balanced manner, the transfer of the filter plate (F') as usual It will not be possible.

As shown in the enlarged cross-sectional view of the lower part of FIG. 4, a curved protrusion R having a predetermined thickness t is formed on the edge of the filter plate F ′ of the present invention, and when the pressing plate 8 is pressed. Compression between adjacent filter plates F 'provides reliable sealing.

The present invention drainage passage 35 is provided on both sides of the filter plate (F '), is integrated in the drain passage 35a and discharged to the drain pipe 40 on one side of the filter plate (F'), so the discharge efficiency is high and the filtration time is high. Not only is it shortened, irrespective of the cake removal operation, the filtrate can be collectively discharged to the filtrate drain pipe 12 through the filtrate channel 11 on one side of the dehydrator.

Other advantages according to the present invention will be readily apparent from the above description and drawings even if not specified.

In addition, the above description is not intended to limit the scope of the present invention, but merely for the purpose of illustration of the embodiment is not intended to limit the present invention.

That is, any one of the configurations of the circular filter projection, the structure of the support ring on both sides, the configuration of the drain passage and the drain pipe, or the configuration of providing a seal using the curved protrusion, or the respective configurations Addition or modification to other means known in the art is naturally included within the scope of the present invention.

Claims (3)

In the filter plate press-molded synthetic rubber so that the plurality of filter protrusions 32 and the support block 34 are provided on both sides of the reinforcing iron plate 31 through which the sludge passage 23 is drilled, the edge of the filter plate has a predetermined thickness (t). A curved protrusion R is provided, and a plurality of drainage passages 35 are provided on both sides of the lower part of the filter plate, and a drainage passage 35a is provided to communicate with the plurality of drainage passages 35, and one side of the drainage passage 35a. The filter plate of the filter press type dehydrator, characterized in that by connecting the drain pipe 40 to the end. The filter plate of the filter press type dehydrator according to claim 1, wherein the filter protrusion (32) has a circular cross section. According to claim 1, wherein both sides of the filter plate, the support bracket 37 is formed integrally with the reinforcing iron plate 31, the support bracket 37 is provided with a roller block 38a, the roller block 38a is a roller block ( The filter plate of the filter press-type dehydrator, characterized in that the support ring (36) which is assembled by the support roller 38 and the transfer pin (39) so as to be rotatable in 38a).