KR200161864Y1 - Brick for filtration of water - Google Patents

Abstract

The present invention relates to a collecting block having a function of being installed between the filtration layer of the rapid filter paper and the lower input chamber and spraying the catchment of the filtered water and backwash water. The collecting block of the present invention is a plate-shaped block body (20a), a plurality of vertical catchment discharge hole 21 formed to distribute the filtered water to the lower pressure chamber in the upper layer portion and to spray the backwash water at the time of backwashing, and this catchment A plurality of water collecting outlets 22 are formed in the middle layer of the body to correspond to each area, and collect the filtered water from the water collecting jet hole 21 to disperse the backwash water, and the lower layer in the lower layer. And a plurality of vertical outflow distribution holes 23 formed to be connected to the collecting distributor 22 so as to discharge the filtered water to the lower pressure chamber and to distribute the backwash water of the pressure chamber to each of the collecting distributor. The collection block of the present invention is easy to stack and manage the filtrate and filter filtration, the backwashing efficiency of the filtration layer is increased, and can prevent the loss of the filter yarn, as well as the It is also easy to replace, greatly reducing the overall equipment cost, maintenance and repair costs of the filter paper.

Description

Collecting block for rapid filtration paper with strainer function

1 is a longitudinal sectional view of a rapid filter paper to which the present invention is applied.

Figure 2 is a partially cutaway perspective view showing the configuration of the collecting block according to the present invention.

3 is a plan view showing the installation state of the collecting block according to the present invention.

4 is an enlarged view of a portion "A" of FIG.

5 is a cross-sectional view taken along line B-B in FIG.

Figure 6 is a schematic cross-sectional view of the filtration chamber showing a laminated structure and the filter sand according to the present invention.

Figure 7a is an exploded perspective view showing the configuration of a conventional collecting block and strainer.

Figure 7b is a longitudinal sectional view showing the installation state of the conventional strainer.

8 is a cross-sectional view of a filtration chamber showing a structure of a conventional filter sand and filter sand.

* Explanation of symbols on the main parts of the drawings

20: collecting block 20a: block body

20b: bulkhead 21: catchment spout

22: catchment distribution port 20a: inclined circumferential wall

23: outflow distribution hole

The present invention is installed between the filtration layer of the rapid filter paper and the lower pressure chamber to support the filtration layer, and to collect reversibly the outflow function of the filtered water and the spraying function of the backwash water for washing. In particular, the block is a strainer that can support the filtration layer on its own without using a separate outflow and spray mechanism such as a strainer, and efficiently perform the effluent of the filtered water and the spraying of the backwash water. It relates to a catchment block for a quick filter having a function.

In general, the treatment of tap water is carried out through the steps of injecting, admixing, forming flocs and sedimentation of the raw water supplied to the chemical sedimentation basin, followed by a weir of the chemical sedimentation cell. It is supplied to the rapid filter through the sedimentation basin collector and the sedimentation basin discharger, and is filtered through the filter bed of the rapid filter.

In conventional rapid filter paper, a strainer-type collecting block or a wheeler ball type collecting block is usually installed at the lower part of the filtration chamber and used as a lower collecting device.

1 is a longitudinal sectional view showing the configuration of a rapid filter paper to which the present invention is applied, and when the treated water precipitated in the chemical settler is supplied to the raw water collection unit 1 of the filter paper, the filtration chamber 2 through the raw water supply valve 1a. It is configured to be fed to and filtered.

In the lower part of the filtration chamber (2) is provided a collecting block assembly layer consisting of a plurality of collecting blocks (3) arranged in the longitudinal and transverse direction, the filter sand and filter sari are stacked on top of the collecting block assembly layer The filtration layer 4 is provided, and the pressure chamber 5 is formed in the lower part of the collection block assembly layer, and the two-way flow pipe 6 is connected to the pressure chamber 5.

The distribution pipe 6 is branched into a purified water discharge pipe 6a for discharging purified water and a backwash water supply pipe 6b for supplying backwash water, and these purified water discharge pipes 6a and a backwash water supply pipe 6b are provided. Is provided with a purified water discharge control valve 6c and a backwash water inlet control valve 6d for controlling the discharge and inflow of the purified water and the backwash water, respectively.

Such a rapid filter is filtered through the filtration layer (4), the bottom of the backwash water inlet control valve (6d) of the distribution pipe (6) and open the purified water discharge control valve (6c) during the discharge of the filtered water collection block (3), the lower After passing through the purified water discharge control valve 6c of the pressure chamber 5 and the distribution pipe 6, it is discharged to the collection tank 7.

On the other hand, when backwashing the filtration chamber 2, the water discharge control valve 6c of the flow pipe 6 is closed, the backwash water inflow control valve 6d is opened, and the backwash water is pressurized to supply the pressure chamber (5). The backwash water flowing into the) is ejected upward through the strainer 8 installed in each of the collecting blocks 3 to wash the filtered and stacked yarns stacked on top of the collecting block assembly layer.

The washing water washed in the filtration layer 4 is discharged through the backwash water discharge pipe 9 installed at the raw water inlet side.

After the above backwashing step of the filter paper is completed, the backwash water inflow control valve 6d of the distribution pipe 6 and the valve 9a of the backwash water discharge pipe 9 are closed, and the raw water supply valve 1a and the purified water are closed. The filtration of the raw water is resumed by opening the discharge control valve 6c.

FIG. 8 is a partial longitudinal sectional view showing an example of the filtration layer 4 laminated in the filtration chamber 2 of the conventional rapid filter paper, and is generally four kinds on the top of the collecting block assembly layer composed of a plurality of collecting blocks 3. Types of filtration gravel, that is, filtration sacks 11, 12, 13, 14 are laminated in the order of size, and filtration sand, ie, filtration sand 10, is stacked on the top thereof.

Each of the collecting blocks 3 is provided with a plurality of strainers 8, in the filtration process, only the filtered purified water flows out into the lower pressure chamber 5 without leakage of the filtration yarn 10, and at the time of backwashing. The backwash water supplied from the lower pressure chamber (5) is injected into the filtration layer (4).

The strainer 8 has been introduced to some of the typical products in Utility Model Publication No. 90-119 (name: backwashing upward strainer for filter paper), such a conventional strainer (8) is generally shown in Fig. 7a, As shown in FIG. 7B, a plurality of cylindrical water collecting pipes 8a are buried vertically and horizontally at predetermined intervals in a rectangular water collecting block 3 having a predetermined thickness, and upper ends of the respective water collecting pipes 8a. There is a structure in which a plurality of outflow holes (8c) the injection cap (8b) formed in the side wall portion is screwed.

The filter sand (10) is usually stacked with a particle diameter of about 0.3-2mm sand to a thickness of about 600-700mm, the filter sand (11, 12, 13, 14) sequentially stacked on the lower layer is made of Gravel of about 2-5 mm in diameter is laminated as a filter layer 11 of one layer about 100 mm in thickness, and the filter stalk 12 of about 5-10 mm in diameter is laminated in a 2nd layer about 100 mm in thickness, The filter layer 13 of the three layers has a particle diameter of 10-15 mm, a thickness of about 150 mm, and the fourth layer of the filter layer 14 having a particle diameter of 15-30 mm is laminated to a thickness of about 150 mm.

Therefore, in the conventional water collecting device of the lower part of the conventional rapid filtration paper, the separate strainers 8 must be provided as described above, and the plurality of strainers 8 must be attached to each collecting block 3, so that the strainer ( In addition to the factors that significantly increase the facility cost according to the acquisition and installation of 8), there was a problem such that the additional burden of the maintenance cost due to damage and replacement of the strainer (8) could not be excluded.

Moreover, since the filter layer 4 of the conventional rapid filter paper is formed by sequentially stacking various kinds of filter stools 11, 12, 13, and 14 as described above, a large amount of filter gravel is required. There is a problem in that the facility cost of the filter paper is further increased as a lot of difficulties in the step-by-step lamination of each gravel layer.

In addition, it is not easy to replace the filtrate sand and the filtration sand stacked step by step in the replacement work of the filter sand 10 and the filtration saree (11, 12, 13, 14), the replacement cost is increased due to the large loss of filtration sand, etc. There was a disadvantage.

In addition, since the backwash water sprayed from each strainer 8 during the backwashing of the filter paper is ejected upward at a predetermined inclination angle through the outlet hole of each strainer 8, as shown in FIG. The upper periphery of the strainer 8 generates a blind spot (A) that does not reach the injection force of the backwashing water, and thus the backwashing efficiency of the filtration layer 4 can not be evenly applied to the entire area of the lower gravel layer. There was a defect that is significantly reduced.

In addition, the filter filtration (11, 12, 13, 14) layer to maintain the total thickness of about 500mm, the thickness of the filtration yarn 10 layer located in the upper layer is only about 600-700mm In addition, even when the turbidity of the water quality increases, the thickness of the filter sand 10 layer cannot be increased, so there are many difficulties in improving the water quality of the filter paper.

Therefore, the main object of the present invention is to provide a lower collecting device for a rapid filter paper does not have all the problems as described above.

Another object of the present invention is to prevent the loss during filtration, uniform backwashing is possible throughout the filtration layer not only does not generate blind spots, but also has a fast strainer function to obtain a high-quality purified water with low turbidity The present invention provides a collecting block for filter paper.

Another object of the present invention is to provide a catchment block for a quick filter having a strainer function that can significantly reduce the installation cost and maintenance cost of the filter paper.

The purpose of the present invention as described above is achieved by a strainer-integrated collection block having both a filter body collecting function and a backwash water spraying function in the block body, without using a separate strainer as a conventional catchment device of a rapid filter paper. Can be.

The present invention for achieving the above object is installed between the filtration layer for filtering water and the pressure chamber to collect the filtered filtration water from the bottom of the filtration layer and the backwash water for washing from outside As a catchment block for rapid filtration paper for reversibly performing the effluent and filtration of backwash water while supporting the bed, it uses a plate-shaped block body of constant thickness that can be connected to each other, and the block body is upper part in the thickness direction. And the middle layer and the lower layer, and the upper layer has a plurality of water collecting holes for distributing the water filtered in the filtration layer toward the pressure chamber and for evenly discharging the backwash water rising from the pressure chamber to the filtration layer. It is formed to be arranged in the transverse direction, the upper layer portion is divided into a plurality of regions and the upper layer portion below each region is A plurality of catchment outlets are shared to collect the distributed backwash water and form a plurality of catchment outlets for distributing the backwash water coming from the pressure chamber to the catchment outlets, and the lower part of the block body Strainers function by forming a plurality of outflow distribution holes for discharging the collected water outlets formed in the middle layer and the filtered water collected therethrough to each of the pressure chambers, and distributing the backwash water from the pressure chambers to each of the water collecting distributors. Provided is a catchment block for a rapid filter paper having a.

Here, the plurality of catchment discharge holes formed in the upper layer portion of the block body arranged at equal intervals in the longitudinal and transverse directions, each of the cylindrical holes vertically penetrating at a diameter to the extent that the particles constituting the filter layer can not pass through To form.

In addition, each boundary portion of the plurality of regions partitioning the upper layer portion of the block body has a width larger than the interval of the plurality of ejection spaces, and a plurality of collecting distributors formed in the middle layer portion of the block body, the upper portion of which is equal to the width of the boundary portion. It is to be divided into a thick partition wall, and the lower portion is gradually narrowed to have a funnel shape having an inclined circumferential wall portion connected to the outflow distribution hole formed in the lower layer of the block body.

Hereinafter, with reference to the accompanying drawings a specific embodiment of the present invention will be described in more detail.

Figure 2 is a partially cutaway perspective view showing the configuration of the collecting block according to an embodiment of the present invention, Figure 3 is a plan view showing the installation state of the collecting block, Figure 4 is a partially enlarged view of Figure 3, Figure 5 It is AA sectional drawing of FIG. 4, and FIG. 6 is sectional drawing of the filtration chamber which showed the laminated structure of the filtration yarn and the filtration yarn by this invention.

First, referring to FIG. 3 and FIG. 6, the structure of the filtration chamber to which the present invention is applied will be described. A plurality of collecting blocks 20 according to the present invention are vertically and horizontally connected to the lower part of the filtration chamber 2. In the lower part of the collecting block assembly layer, a normal pressure chamber 5 is provided, and on the upper part of the collecting block assembly layer, the filter sand 10 and the filter sari 11 are stacked.

The collecting block 20 of the present invention is the bottom edge of the block body or one side of the block body on the support or support wall 15 installed at equal intervals on the bottom of the pressure chamber 5, the pressure chamber 5 It is installed at a certain height from the bottom surface of the catchment block 20, the corner portion of the fixed iron plate 17 and the nut 18 fastened to the upper end of the anchor bolt 16 buried in the support or support wall (15) By vertically and horizontally).

Each collection block 20 installed as described above is a square plate shape having a predetermined width, length, and thickness, as shown in FIGS. 2 to 5, and can be constructed by connecting their edges in the longitudinal direction. As the block body 20a, the block body 20a is divided into an upper layer part, an intermediate layer part and a lower layer part in the thickness direction, and the upper layer part is circulated with the water filtered in the aforementioned filtration layer toward the lower pressure chamber. A plurality of catchment ejection holes 21 for ejecting backwash water rising from the pressure chamber into the filter bed are arranged in the longitudinal and transverse directions, and a plurality of upper layer portions in which the plurality of catchment ejection holes 21 are formed. The water discharge hole 21 is collected in the upper portion below each of the divided areas, and the filtered water coming through the water collecting holes 21 is collected and the backwash water coming from the pressure chamber side is collected. And a plurality of collecting distributors 22 for distributing them into the tanks, and in the lower part of the block body, the collected water outlets 22 formed in the middle layer and the filtered water collected therein are discharged to the pressure chamber. It was configured to have a strainer function by forming a plurality of outflow distribution holes 23 for distributing the backwashed water from the pressure chamber to each collection portion.

Each of the catchment discharge holes 21 is stacked on top of the block body and has a size (diameter: less than or equal to about 2 mm) that is not allowed to pass through the filtration fern 11 or the filtration yarn 10 constituting the filtration layer. It is a circular hole of a predetermined depth formed in the vertical direction and arranged at regular intervals in the longitudinal and transverse directions throughout the upper layer portion of the block body (20a), the lower end of each of the catchment discharge hole 21 is the catchment distribution port ( 22), it has the same function as a spray nozzle that sprays a certain amount of backwash water to the upper side during backwashing.

In addition, each boundary portion of the plurality of regions partitioning the upper layer portion of the block body 20a has a width larger than the distance between the plurality of catchment discharge holes 21, and the plurality of houses formed in the middle layer portion of the block body 20a. The water volleyball 22 is distinguished by partition walls 20b formed at the upper side thereof with the same thickness as the boundary width. Each catchment distribution port 22 was formed in a funnel type having an inclined circumferential wall part 22a connected to an outlet distribution hole 23 formed in the lower layer of the block body 20a while gradually narrowing from the upper part to the lower part.

In the collection block 20 of the present invention as described above, for example, in the case of the block body 20a having a horizontal length and a vertical length of about 1m × 1m, the interval between the water collecting jet holes 21 is about 17.4mm. About 64 catchment ejection holes 21 are arranged at equal intervals for each region that is arranged laterally and laterally at intervals and corresponding to the catchment distribution outlet 22. The outlet distribution holes 23 communicating with the respective collecting distributors 22 are formed into vertical cylindrical holes having a diameter of about 13.6-16 mm, and communicate with the lower central portion of each collecting distributor 22.

In the above, the collection block 20 according to the present invention is illustrated and described as an example of being formed as a single body, but in implementing the present invention, the block body 20a is a plurality of the collection water as shown in FIG. The upper layer portion 20a of the upper layer portion only in which the blow holes 21 are formed, the intermediate layer portion in which the water collecting distributor 22 including the partition wall 20b is formed, and the lower layer portion in which the outflow distribution holes 23 are formed. The lower plate portion 20B may be formed of separate members, and the upper and lower plate portions 20A and 20B may be assembled to each other.

The water collecting block of the present invention configured as described above can smoothly perform the water collecting function of the purified water and the spraying function of the cleansing water required at the time of backwashing without using any strainer used in the conventional water collecting block at all. As a result, the resulting effects are as follows.

First, during the filtration process of the rapid filter paper, the raw water supplied from the chemical sedimentation basin is filtered while passing through the filter sand (10) and filter filter (11), and when the filtered water reaches the bottom collecting block granulation layer, It is introduced into each unit collecting distributor 22 through a plurality of collecting discharge holes 21 formed in the upper layer of each collecting block 20, and then passes through the outlet distribution hole 23 in the lower part to the pressure chamber 5. Then, it is discharged, and is discharged to the collecting tank 7 through the purified water discharge pipe 6a of the distribution pipe (6).

On the other hand, in the backwashing process of the rapid filter paper, if the backwash water or air of the strong pressure supplied through the backwash water supply pipe 6b flows into the pressure chamber 5, the pressure water and the air are collected in each of the collecting blocks 20. At the same time as flowing into the water collecting distribution port 22 through each of the outlet distribution holes 23 formed in the lower portion of the upper portion is discharged into the upper filtration chamber (2) through each of the upper water collecting discharge holes 21, laminated on the top The filtered filter layer 11 and the filtered filter layer 10 is stirred to wash.

In this process, the water collecting block 20 according to the present invention has a funnel shape in which the water collecting outlet 22 has an inclined circumferential wall portion 22a, and the upper portion of the water collecting block 20 has a function of a spray nozzle. Since the small-sized catching water outlet 21 is uniformly disposed over the entire surface, each catching block 20 while the pressure of the backwashing water acting upward by the funnel-type catching water distribution port 22 is equally dispersed. Since it is possible to spray at a uniform pressure through all the sump discharge holes 21 disposed on the entire upper surface of the upper surface of the, it is possible to perform a very even backwashing over the lower part of the filtration layer, that is, the entire area of the filter sash 11 layer. .

The present invention as described above is formed in the water collecting block 20 is evenly discharged through the small water collecting spout 21 is prevented from leaking the filter sand 10 during the filtration water purification, backwashing water at the time of back washing Since the finely divided and evenly sprayed at fine intervals of 17.5 mm in all directions, blind spots do not occur over the entire lower part of the filter layer, thereby greatly improving the backwashing efficiency of the filter layer.

Therefore, according to the water collecting block of the present invention as described above, since the loss of the filtration yarn 10 can be prevented, and the uniform filtration of the filtration yarn and the filtration yarn can be performed, the conventional filtration layer 4 shown in FIG. As shown in FIG. 6, it is possible to stack one type and one layer of filter fern 30 in a small amount (height), as shown in FIG. You can get it.

In other words, in the conventional lower collecting device using the strainer, the backwash water of the relatively thick stems ejected from the strainer is gradually subdivided by stepping between the different layers of filter gravel, and then gradually separated into the stepwise backwash water. Since the filter sand layer is to be washed by the conventional filter layer, a filter sand layer having a total thickness of about 500 mm and a total thickness of about 500 mm are required in the conventional filter layer as described above. In the apparatus, since the backwash water, which is subdivided to a small thickness, is sprayed evenly in the vertical direction by the catchment discharge hole 21 formed in the catchment block 20 itself, the first step as described above. Evenly filter layer (11) of the evenly spraying the backwash water sufficient to wash the filter yarn 10 A.

Therefore, according to the lower collecting device according to the collecting block 20 of the present invention, in the case of the rapid filter paper having the total thickness of the filtration layer of about 1,100 mm, one type of gravel, for example, the particle diameter is about 2-5 mm Of gravel can be provided to a thickness of about 150 mm to form a filter yarn 11 layer, and the filter yarn 10 layer can be laminated to a thickness of 950 mm.

By doing so, four types of gravel are laminated in the order of size as in the prior art, and the entire filter sack layer is formed to a thickness of about 500 mm, and the filter sand layer is laminated to a thickness of 600 mm. Since the thickness can be greatly increased, the filtration efficiency of the rapid filter paper can be greatly improved, and high-quality filtered water with low turbidity can be produced.

Moreover, according to the present invention, only one type and a small amount of filter cobbles are required, so that the lamination work and management of the filter sack are easy and the equipment cost of the filter paper is greatly reduced. In addition, the backwashing efficiency of the filtration layer is increased to significantly reduce the required amount of backwashing water, which not only reduces the maintenance cost of the filter paper, but also facilitates the management of the filtration layer and prevents the loss of the filtration company. The replacement of yarns and filter sacks is also easy, which can significantly reduce the overall maintenance and repair costs of the filter paper.

The present invention as described above is to fundamentally improve the concept of the existing water collecting device of the existing rapid filter paper, it can be easily applied to the existing filter system as well as the new rapid filter paper.

Claims (2)

Collects the filtered filtrate from the lower part of the filter layer and the filtered filtrate from the lower part of the filter layer, and when washing, it is installed between the pressure chambers supplied with backwash water from the outside to support the filter layer, and the filtered water outflow function and backwash water. In the catchment block for rapid filtration paper to reversibly perform the spraying function, it becomes a plate-shaped block body of a certain thickness that can be connected to each other, and the block body is divided into an upper layer, a middle layer and a lower layer in the thickness direction, and the entire upper layer. Formed vertically and vertically in the longitudinal and transverse directions and smaller in size than the particles constituting the filtration layer to distribute the filtrate downwards and to filter backwash water supplied from the pressure chamber during backwashing. A plurality of catch-up ejection holes 21 which can eject evenly to the whole floor, and the plurality of catches in the middle layer part. A plurality of blowholes are formed so as to share a predetermined number of water, and to collect the filtered water flowing through the predetermined number of catchment outlets, and to backwash water supplied from the pressure chamber to the predetermined number of catchment outlets during backwashing. The catchment distribution port 22 and the lower part are connected to the plurality of catchment distribution ports, respectively, to discharge the filtered water collected in each catchment distribution port into the pressure chamber, and during backwashing, the backwash water of the pressure chamber is discharged to each catchment distribution port. Collecting block for a rapid filter paper having a strainer function, characterized in that it comprises a plurality of outflow distribution holes (23) formed to distribute. According to claim 1, Between the upper edge of the water collecting outlets formed in the interlayer layer portion of the block body there is a partition wall 20b having a thickness greater than the interval between the plurality of water collecting outlets 21, each water collecting distributor Collecting block for a quick filter having a strainer function characterized in that the funnel type having a sloped circumferential wall connected to each outlet distribution hole formed in the lower layer of the block body gradually narrowed to the lower side.