KR100572352B1 - Improvement repair structure and method of lower water collecting system - Google Patents

Abstract

The present invention is a filter block installed in the upper portion of the bottom of the filter paper, the strainer fixture embedded in the filter block, the non-shrink mortar treated joint between the filter block, and fastened / assembled to the strainer fixture An improved maintenance structure and method of a lower collecting device for improving / repairing a lower collecting device including a strainer and a filtration layer formed on an upper surface of the filtering block; A breakage and separation prevention member for supporting the filtration block and the next wedge strainer on an upper surface of the filtration block in a state where the filtration layer and the conventional strainer are removed, and for supporting strength of the filtration block and subsequent reinforcing treatment parts; A wedge type strainer having a double structure for fastening / fixing to the strainer fixing body in the filtration block and horizontally adjusting at the time of fastening and for improving the equal distribution of water and air during backwashing; It is formed by the non-shrink mortar treatment on the upper surface of the filter block formed with the breakage and separation prevention member, and seamlessly integrated to complement the joint and support the filter block and the wedge-shaped strainer to reinforce the damage or separation prevention Including a reinforcement treatment to form a single structure of the.

Lower collecting device, filtration block, wedge strainer, reinforcement part, backwashing, equal distribution

Description

IMPROVEMENT REPAIR STRUCTURE AND METHOD OF LOWER WATER COLLECTING SYSTEM             

1 is a cross-sectional view showing a strainer type lower collecting device according to the prior art.

Figure 2 is a perspective view showing a strainer fixture embedded in the filtration block in the conventional lower collecting device.

3 is a perspective view showing a strainer in a conventional lower collecting device.

Figure 4 is a cross-sectional view showing a lower collecting device to which the improved repair structure according to the present invention is applied.

Figure 5 is a perspective view showing a strainer in the lower collecting device to which the improved repair structure of the present invention is applied.

FIG. 6 is a cross-sectional view illustrating the A-A cross section of FIG. 5. FIG.

Figure 7 is a process diagram shown to explain the improved repair method of the lower collecting device according to the present invention.

Explanation of symbols on the main parts of the drawings

10: strainer fixture 20: filter block

30: joint 40: breakage and separation prevention member

50: wedge strainer 51: height adjustment

52: water / air equalizing part 52a: jet pipe

52a-1: Slit 52b: Uniform distribution pipe

52b-1: slot 60: reinforcement part

70: filtration layer

The present invention relates to a lower collecting device for equally distributing the collected water and the backwash water in the filter paper, and more specifically, to problems such as loss head due to breakage and leakage of the non-condensation mortar treated joint and the filter block. Improved repair structure and improvement of the lower collecting device to prevent strain and breakage of the strainer, but to improve the filtration and backwashing efficiency by improving the equal distribution function of air and backwash water as well as perfect horizontal coupling of the strainer. It relates to a repair method.

In general, the lower collecting device is installed in a water purification plant or a sewage treatment plant to produce stable water quality, and filters the fine impurities from the purified water through filter paper so that only clean water can be supplied. It supports the filter media such as gravel and has the functions of collecting the filtered water and equally distributing the backwash water.

Such a lower collecting device has been proposed in various forms, but a strainer type in which a filtering block is arranged in parallel on a support of a bottom of a filter paper and a strainer is inserted into and fixed to the filter block is commonly used.

1 shows a strainer type lower collecting device according to the prior art, and as shown in FIG. 1, the lower collecting device according to the prior art has a plurality of filtration blocks having a parallel arrangement structure on an upper part of the support 1 of the filter paper bottom. (2), a plurality of hollow strainer fixtures (3) embedded in the plurality of filter blocks (2) arranged, and a strainer screwed to the strainer fixtures (3) embedded in the filter block (2) 4) and a filtration layer 5 formed on the filtration block 2 by a medium such as sand or gravel.

At this time, the filtration block 2 is a constitution of a water collecting block made of concrete material, and includes a joint portion 6 which is subjected to non-shrink mortar treatment between the respective filtration blocks arranged in parallel. In this case, the joint part 6 functions to connect the joints of the plurality of filtration blocks 2 arranged at the same time and to eliminate the gap.

The strainer fixing body 3 is made of a synthetic resin material, and as shown in FIG. 2, a screw thread portion 3a for fastening the strainer 4 is formed on the hollow inner surface.

The strainer 4 is formed by injection molding of a synthetic resin material such as polyethylene (PE) or polypropylene (PP), and as shown in FIG. Heavy hollow body 4a which is screwed to the stagnation 3 and an internal hollow water / air jet which is coupled to the upper end of the hollow tube 4a and has a plurality of vertical slits 4b-1 as sidewalls. It consists of the tube body 4b.

The lower collecting device according to the prior art having such a configuration has a plurality of concrete filter blocks (2) in which a plurality of strainer fixing bodies (3) are embedded, and a filtering block (2) above the support (1) of the bottom of the filter paper. Are arranged in parallel to form a non-shrink mortar joint 6 between the filtration block 2 and the filtration block 2 so as to eliminate the gap at the same time as the joint connection between each other, the collection of the filtered water and backwash water The strainer 4 having a dispensing function is fastened on the filtration block 2 to be fixed. Here, the strainer 4 matches the threaded portion 4a-1 of the hollow tube body 4a with the threaded portion 3a of the strainer fixture 3 incorporated in the filtration block 2, thereby filtering the filtration block 2. ) And the water / air jet pipe 4b of the strainer 4 is exposed on the upper surface of the filter block 2. At this time, the hollow tube (4a) of the strainer 4 is to be located in the lower portion of the lower collection chamber (8) and to be configured in connection with the pressure chamber (not shown).

When the coupling of the strainer 4 is completed, a plurality of media such as sand or gravel are stacked on the upper surface of the filtration block 2 arranged in parallel to form the filtration layer 5.

When water is supplied into the filter paper while the filter layer 5 is formed as described above, water flows from the upper part to the lower part of the filter layer 3 stacked with sand or gravel and is filled with fine impurities contained in the filter layer ( It is filtered by the filtration layer 3 while flowing down to the bottom of 3). The filtered water of clean water filtered out with impurities is drained through a plurality of strainers 4 installed on the filtration block 2, that is, a plurality of slits 4b-1 formed on the side wall of the water / air jet pipe 4b of the strainer 4. Then, the hollow tube 4a is flowed into the lower collection chamber 8 formed under the filtration block 2.

In addition, the lower collecting device needs to periodically remove the impurities filtered through the filtration layer 3 in order to improve the filtration efficiency, and the side wall slit 4b-1 of the water / air jet pipe 4b of the strainer 4 is provided. The water and air are reversely supplied to the filter layer 3 to remove impurities by washing the impurities filtered in the filter layer 3 through the reverse supply blowout pressure of the water and air. At this time, through the control of the pressure chamber (not shown) to supply water and air of a constant pressure from the lower side to the upper side of the strainer 4, the coupling of the strainer 4 exposed on the upper surface after coupling on the filter block (2) The reverse supply is achieved by causing the filter bed 3 to be injected at a high pressure through the water / air jet pipe 4b.

However, according to the conventional lower collecting device as described above, since the strainer is an injection product made by injection molding of a synthetic resin material, not only the strength is weak but also the side wall slits of the water / air jet pipe are not formed uniformly so that water and air are equal. There was a problem of reducing the efficiency of backwashing and filtration by making one dispensing discharge difficult, there was a problem that the strainer was easily broken or dislodged by the strong pressure jet of water and air during periodic washing of the filtration layer, and the strainer in the filtration block When assembling, the horizontal defect of the strainer occurs due to the horizontal imbalance of the filtration block, and it is difficult to adjust it easily, and the conventional strainer structure makes it difficult to distribute the water and air evenly during backwashing, so that the backwashing is not uniform. There was a problem.

In addition, during the periodic cleaning of the filter layer, frequent breakage of the non-shrink mortar treated joints occurs between the filter blocks due to the strong pressure jet of water and air. There was a problem that cannot be supported / maintained, and as a result, the damage is transferred to the edge of the filtration block, and a considerable obstacle is caused when water and air are supplied back for backwashing. There was a problem.

In addition, there are many inconveniences of periodically replacing or repairing the lower collecting device due to frequent breakage or detachment of the joints or strainers of the filtration block, and during the repair work, the filtration block is removed and the foundation structures such as props are changed. Due to the multiple reflections, there is a problem that the construction period is long or the maintenance cost is excessively excessive, which greatly affects the management operation such as the maintenance of the filter paper, and the overall filtration and backwashing functions of the lower collecting device are deteriorated. .

The present invention has been made to solve the above problems, the purpose is to compensate for problems such as leakage and loss caused by breakage of the non-shrink mortar treated joints, and to prevent breakage and separation of the strainer It provides an improved repair structure and improved repair method for the lower collecting device, which prevents but enables perfect horizontal coupling of the strainer, and improves the function of the equal distribution of the catchment and the backwash water.

The present invention is to improve the filtration and backwashing efficiency compared to the existing lower collecting device through the improved repair structure and improved repair method of the lower collecting device, and to effectively reduce the construction period and maintenance cost during the improved repair. have.

In addition, the present invention provides an improved maintenance structure and an improved repair method for the lower collecting device, which is structured so that almost no maintenance is required at the time of installation, either semi-permanently or permanently, so that economic efficiency and efficiency can be achieved in the management operation of the lower collecting device. .

The present invention for achieving the above object is a filter block installed in the upper portion of the bottom of the filter paper, the strainer fixed body embedded in the filter block, the non-shrink mortar treatment between the filter block, and the An improved maintenance structure of a lower collecting device for improving / repairing a lower collecting device comprising a strainer fastened / assembled to a strainer fixture and a filtration layer formed on an upper surface of the filtration block; Supporting the filtration block and the wedge-shaped strainer described below on top of the filtration block joined by the joint with the filter layer removed and the conventional strainer removed, as well as the filtration block and the reinforcement described later. Breakage and separation prevention member for supporting the strength to the processing unit; Fastening / fixing to the strainer fixing body embedded in the filtration block, it is possible to adjust the height according to the height of the installation at the time of tightening and wedge type having a dual structure for improving the equal distribution of water and air during backwashing A strainer; It is formed by the non-shrink mortar treatment on the upper surface of the filter block formed with the breakage and separation prevention member, to complement the mortar-treated joint between the filter blocks and to support the filter block and wedge strainer It is characterized by an improved maintenance structure of the lower collecting device comprising a reinforcement treatment unit to form a seamless unitary structure to reinforce the separation prevention.

In addition, the present invention is a filter block installed in the upper portion of the bottom of the filter paper, the strainer fixed body embedded in the filter block, the non-shrink mortar treated joint between the filter block, fastening / to the strainer fixed body An improved maintenance method of a lower collecting device for improving / repairing a lower collecting device including an assembled strainer and a filtration layer formed on an upper surface of the filtering block; Removing the conventional filtration layer and dismantling and removing the conventional strainer from the strainer fixture; A breakage and separation prevention member is disposed on the upper surface of the filtration block connected by the joint to support the filtration block and the wedge-shaped strainer to be assembled next, and the filtration block and the subsequent non-shrink mortar treatment are provided. Making it possible to support strength; The wedge-type strainer of the dual structure having a horizontal adjustment to the strainer fixed body embedded in the filtration block and having an equally distributed water supply and air supply capacity when backwashing is fastened / fixed to the wedge through a laser level gauge and height adjustment. Maintaining uniform horizontality between the mold strainers; Form a reinforcement treatment part by non-shrink mortar treatment on the upper surface of the filter block formed with the breakage and separation prevention member to complement the joint of the filter block and to support the filter block and the wedge-shaped strainer to reinforce prevention of breakage or separation. To form a seamless single unitary structure; Characterized by the improved maintenance method of the lower collecting device comprising the step of forming a filter layer by laminating a medium such as sand or gravel on the upper surface of the non-shrink mortar-treated reinforcement treatment.

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

4 is a cross-sectional view illustrating a lower collecting device to which the improved repair structure according to the present invention is applied, and FIG. 5 is a perspective view showing a strainer in the lower collecting device to which the improved repair structure according to the present invention is applied, and FIG. It is a cross-sectional block diagram which shows the AA cross section, and FIG. 7 is process drawing shown in order to demonstrate the improved repair method of the lower collection device which concerns on this invention.

4 to 6, the lower collecting device to which the improved repair structure according to the present invention is applied is arranged in a joint connection on the upper part of the support 1 of the bottom of the filter paper, and includes a plurality of filtrations incorporating a hollow strainer fixture 10. Block 20, the non-shrink mortar treated joint 30 for the joint connection of the filtration block 10, and disposed on the upper surface of the filtration block 20 to prevent breakage of the filtration block 20 At the same time, the breaker and separation prevention member 40 which prevents the strainer 50 from being detached when the strainer 50 is fastened to the strainer fixture 10 at the same time, and embedded in the filtration block 20. Wedge wire type strainer (50) which is fastened / fixed to the fixed strainer fixed body (10) and enables dual adjustment of the installation height at the time of fastening, as well as dual structure for equal distribution of water and air during backwashing. And, the breakage and separation prevention member 40 The filter block 20 and the wedge-shaped strainer 50 are formed on the upper surface of the formed filter block 20 and complementarily process the mortar treated joints 30 between the filter blocks 20. Filtration layer 60 formed by laminating a non-shrink mortar-reinforcement treatment unit 60 and the upper surface of the reinforcement treatment unit 60 by sand or gravel, so as to reinforce them against damage or departure through the support thereof. 70).

The breakage and separation prevention member 40 is mainly configured to reinforce the upper surface of the filtration block 20 by using reinforcing bars to filter the reinforcing bars arranged using fixing means such as block fixing washers or anchor bolts (not shown). It is necessary to fix on the block 20, press the upper surface of the filtration block 20 to support and of course the action of holding the outer portion of the strainer 50 coupled to the filtration block 20 and the water supplied during backwashing Preventing the breakage of the filtration block 20 from the strong pressure of the at the same time to prevent the breakage and separation of the strainer 50.

The wedge wire strainer (wedge wire strainer) (50) forms a screw coupling portion (51a) to the middle portion of the outer surface of the hollow tube body to adjust the height of the strainer and the horizontal adjustment between the plurality of strainers installed when fastened to the strainer fixture (10) Height adjustment unit 51 and the inner hollow water / air jet pipe body 52a coupled to the upper end of the height adjustment unit 51 and formed with a plurality of slits 52a-1 on the sidewalls and the It consists of a water / air equality ejection part 52 which is located in the center of the ejection pipe body 52a, and has the cylindrical equal distribution pipe 52b which formed the slot 52b-1 radially on the outer periphery.

Here, the wedge strainer 50 is a stainless steel structure that is mechanically molded using stainless steel, and has a structure and an improved strength that are uniformly compared with conventional synthetic resin strainers and have improved strength, and the slits 52a-1. ) Or the slot 52b-1 is formed to a certain standard.

In the wedge-shaped strainer 50, the water / air equality ejection part 52 exposed to the upper surface of the reinforcement treatment part 600 drains the filtered water filtered by the impurities through the filtration layer 70 to adjust the height of the height adjusting part 51. Through the lower collecting chamber (8) through the water and air for backwashing the filtration layer evenly distributed in the filtration layer (70) to act to perform filtration and backwashing uniformly. Here, when the filtered water is drained, the filtered water flows into the water / air jet pipe 52a through the slit 52a-1 formed on the side wall and is evenly distributed through the radial slot 52b-1 to distribute the equally distributed pipe 52b. After being introduced into the guide pipe is connected to the height adjustment unit 51 of the hollow pipe through the lower collecting chamber (8), and when backwashing the filtration layer (70) through the control of the pressure chamber (not shown) Water and air are led to the water / air equality ejection unit 52 at a constant pressure from the height adjusting unit 51 and are evenly distributed in the radial slot 52b-1 to radially radiate the water / air ejection tube 52a. Simultaneously with the outflow, backwashing is performed by allowing water and air to be fed back to the filtration layer 70 in a strong and constant manner through the side wall slits 52a-1.

The reinforcement treatment unit 60 is a non-shrink mortar structure that supports the filtration block 20 and the wedge-shaped strainer 50 from the strong supply pressure of water and air at the time of backwashing to reinforce the prevention of damage or detachment thereof. Zooming, of course, the function of supplementing the broken portion or the falling off portion of the joint portion 30 formed between the filtration block 20, the strainer fixing body by the non-shrink mortar-reinforced treatment unit 60 Including the filtration block 20 and the breakage and separation prevention member 40 with the built-in (10) to the wedge-shaped strainer 50 to have an integrated configuration. That is, it functions to structure each component into a single body.

The improved repair structure and the improved repair method of the lower collecting device according to the present invention having such a configuration and function will be described in more detail with reference to FIGS. 1 and 4 to 7 as follows.

First, the lower collecting device of the filter paper according to the prior art having the structure of the filtration block 2, the strainer fixture 3, the strainer 4, the filtration layer 5 and the joint 6 as shown in FIG. In the first step in FIG. 7, the filter medium 5 forming the filter layer 5 is removed, the synthetic resin strainer 4 is disassembled from the strainer fixture 3, and the upper surface of the filter block 2 is cleaned. As such, the filter block 20 forming the joint part 30 remains. At this time, the strainer fixture 10 is built in the filtration block 20 as it is.

On the top of the cleanly filtered filtration block 20, a breakage and separation prevention member 40 such as reinforcing bars is disposed on the filtration block 20 using fixing means (not shown) such as block fixing washers or anchor bolts. Process to achieve a stable bond. Here, the breakage and separation prevention member 30 supports and fixes the filtration block 20 and the wedge-shaped strainer 50, and serves to increase the strength of the filtration block 20 and the reinforcement treatment part 60. .

The wedge-shaped strainer 50 of the present invention in the state in which the breakage and separation prevention member 40 is disposed is fastened / assembled to the strainer fixing body 10 embedded in the filtration block 20, but the strainer 50 is fastened. The height is adjusted to make the horizontal evenly between the plurality of strainers 50 to be fastened / assembled. Here, by matching the screw thread portion (10a) of the strainer fixing body (10) and the screw coupling portion (51a) of the height adjustment unit 51 to form a mutual coupling and the screw coupling formed in the middle portion of the height adjustment unit (51) By adjusting the fastening depth of the portion 51a, it is possible to maintain a uniform level between the strainers. At this time, the horizontal state of the wedge-shaped strainer 50 that is fastened / assembled using a laser level meter (not shown) is measured / adjusted, and the water / air equality ejection portion 52 of the wedge-shaped strainer 50 is The upper surface of the filtration block 20 is exposed at a predetermined interval and the lower portion of the height adjustment unit 51 passes through the filtration block 20 is located in the lower collection chamber (8). Furthermore, a pressure chamber (not shown) is provided below the height adjusting part 51 of the wedge-shaped strainer 50 positioned in the lower collecting chamber 8 to supply water and air necessary for backwashing at a constant pressure. To be configured in conjunction with

When uniform fastening / assembly of the wedge-shaped strainer 50 is completed, the reinforcement treatment unit 60 may be subjected to non-shrink mortar treatment with an appropriate thickness on the upper surface of the filter block 20 in which the breakage and separation prevention member 40 is disposed. To form. Here, the reinforcement treatment part 60 fills the damaged part of the filter block 20 or the joint part 30 having the breakage or the dropout part by the strong supply pressure and aging of water and air to compensate for them, and at the same time, the filter block. 20 and the breakage and separation prevention member 40 and the strainer 50, including their forming thickness, including to form a single structure to achieve a seamless structure to realize a seamless structure. At this time, the reinforcement processing unit 60 has to form a thickness of at least 40mm for the function display as described above, according to the step height and the horizontal adjustment of the wedge-shaped strainer 50 of the present invention according to the height of the existing installed filter block If the difference in the height of the formation is all considered, it can be treated with a thickness of 50 ~ 100mm and if the improvement of the general lower collecting device will be treated with a thickness of 60 ~ 80mm, the thickness of the reinforcement treatment unit 60 is such It will not be particularly limited to one example.

When a seamless single structure is made through the reinforcement treatment part 60 by the non-shrink mortar treatment, the filter layer 70 is formed by stacking a media such as sand or gravel on the upper surface of the reinforcement treatment part 60.

As described above, according to the improved repair structure and the improved repair method of the lower collecting device according to the present invention, it is possible to achieve a seamless monolithic structure of the filtration block, but to reinforce the strength as well as to compensate for the breakage and dropping parts. It is useful to be able to completely compensate for the problems of leakage due to breakage of the filtration block or the joint, and the decrease in filtration and backwashing efficiency, and also effectively prevent the problem of breakage or breakage of the strainer.

The perfect horizontal balance of the strainer can be balanced to ensure consistent collection and backwash functions.

In addition, it improves the structure of the strainer which performs the function of equally distributing the filtered water and backwashing water, and also improves the strength and accuracy of the standard through the deformation of the material, and extends the life and collects, filters and backwashes. It is an improvement that can be performed. That is, in the improvement of the structure, it is possible to balance the horizontal adjustment by adjusting the height when tightening / assembling the strainer through the positional deformation of the screw coupling part, and the water / air jet pipe having a slit in the water / air jetting body and the radial By having a dual structure of the equal distribution pipe having a slot, the function of equal distribution and equal ejection is improved, thereby greatly improving the filtration and backwashing efficiency.

Furthermore, by implementing a seamless unitary structure of the filtration block, it has a semi-permanent or permanent lifespan, thus providing usefulness so that almost no maintenance is required after renovation. The cost of repair is reduced, which provides the ease and economy of management of the lower collecting system.

Claims (3)

A filtration block provided on an upper support of the bottom of the filter paper, a strainer fixing body embedded in the filtration block, a non-shrink mortar treated joint between the filtration block, a strainer fastened / assembled to the strainer fixing body, An improved maintenance structure of a lower collecting device for improving / repairing a lower collecting device including a filtration layer formed on an upper surface of the filtration block; Supporting the filtration block and the wedge-shaped strainer described below on top of the filtration block joined by the joint with the filter layer removed and the conventional strainer removed, as well as the filtration block and the reinforcement described later. Breakage and separation prevention member for supporting the strength to the processing unit; Fastening / fixing to the strainer fixing body embedded in the filtration block, it is possible to adjust the height according to the height of the installation at the time of tightening and wedge type having a dual structure for improving the equal distribution of water and air during backwashing A strainer; It is formed by the non-shrink mortar treatment on the upper surface of the filter block formed with the breakage and separation prevention member, and complements the mortar-treated joint between the filter blocks and supports the filter block and the wedge-shaped strainer to break or break away Improved repair structure of the lower collecting device, characterized in that it comprises a reinforcing treatment unit to form a seamless unitary structure to reinforce the prevention. The method of claim 1, The wedge-shaped strainer has a height adjusting portion for forming a screw coupling portion in the middle portion of the outer surface of the hollow tube body to enable the height adjustment of the strainer and horizontal adjustment between the plurality of strainers installed when fastened to the strainer fixture; Water having an internal hollow water / air jet pipe that is coupled to the top of the height adjustment part and has a plurality of slits formed on the side wall, and has a cylindrical equal distribution pipe that is placed in the center of the jet pipe but has a radially slotted periphery. Improved repair structure of the lower collecting device, characterized in that consisting of / evenly ejecting air. A filtration block provided on an upper support of the bottom of the filter paper, a strainer fixing body embedded in the filtration block, a non-shrink mortar treated joint between the filtration block, a strainer fastened / assembled to the strainer fixing body, An improved maintenance method of a lower collecting device for improving / repairing a lower collecting device including a filtration layer formed on an upper surface of the filtration block; Removing the filtration layer and dismantling and removing the conventional strainer from the strainer fixture; A breakage and separation prevention member is disposed on the upper surface of the filtration block connected by the joint to support the filtration block and the wedge-shaped strainer to be assembled next, and the filtration block and the subsequent non-shrink mortar treatment are provided. Making it possible to support strength; The wedge-type strainer of the dual structure having a horizontal adjustment to the strainer fixed body embedded in the filtration block and having an equally distributed water supply and air supply capacity when backwashing is fastened / fixed to the wedge through a laser level gauge and height adjustment. Maintaining uniform horizontality between the mold strainers; Form a reinforcement treatment part by non-shrink mortar treatment on the upper surface of the filter block formed with the breakage and separation prevention member to complement the joint of the filter block and to support the filter block and the wedge-shaped strainer to reinforce prevention of breakage or separation. To form a seamless single unitary structure; Improved repair method of the bottom collecting device, characterized in that it comprises the step of laminating the media such as sand or gravel on the upper surface of the non-shrink mortar-treated reinforcement treatment unit to form a filter layer.

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