Construction method of a filter tank and air distribution structure of the filter tank

Abstract

The present application discloses a construction method of a filter tank and a gas distribution structure of the filter tank. The construction method includes: arranging the bottom plate and vertical walls of the filter tank to form a bottom space of the filter tank; welding and fixing the vertical walls and a steel plate integrated with a gas distribution pipe; constructing the formwork of the filter tank in the bottom space of the filter tank; wherein, air distribution holes are formed in the formwork, and the position of the gas distribution pipe corresponds to the position of the air distribution holes; connecting the air distribution holes and the gas distribution pipe; and pouring concrete for the bottom plate, vertical walls and formwork. According to the technical solution of the present application, the position of the gas distribution pipe can be effectively stabilized, the accuracy of the air distribution holes can be ensured to meet the design specifications, and the situation of re-opening the air distribution holes due to insufficient accuracy can be avoided. Since the high accuracy of the gas distribution pipe is improved, the gas distribution uniformity and backwashing effect of the filter tank can also be improved.

Description

Technical Field

[0001] This application relates to the technical field of filter tank construction, and particularly relates to a construction method for a filter tank and a gas distribution structure for the filter tank. Background Art

[0002] As a water treatment facility, the V-type filter tank is widely used in fields such as urban sewage treatment, industrial wastewater treatment, and drinking water treatment. In the V-type filter tank, the setting and layout of the gas distribution pipe and the gas distribution holes play a crucial role in the operation effect and stability of the filter tank.

[0003] Currently, the existing technology mainly opens gas distribution holes in the formwork and fixes a single gas distribution pipe on the formwork. The construction accuracy of the gas distribution pipe is affected by the hole-opening accuracy of the formwork and the stability of the formwork. Once a large deviation occurs during the construction process, it is necessary to block the reserved gas distribution holes, and after the blocking is completed, construction starts again. This not only increases the project cost and prolongs the construction period, but also there are risks such as cutting off steel bars during re-opening of holes, resulting in a decrease in the strength of the structure.

[0004] Therefore, how to design a construction plan for a filter tank and a gas distribution structure for the filter tank, which can effectively stabilize the position of the gas distribution pipe and ensure that the accuracy of the gas distribution holes meets the design specifications, has become a problem to be solved in this field. Summary of the Invention

[0005] In view of this, in the first aspect, this application proposes a construction method for a filter tank, including:

[0006] Lay out the bottom slab and vertical wall of the filter tank to form the bottom space of the filter tank;

[0007] Weld and fix the vertical wall and the steel plate integrated with the gas distribution pipe;

[0008] Construct the formwork of the filter tank in the bottom space of the filter tank; wherein, the formwork is provided with gas distribution holes, and the position of the gas distribution pipe corresponds to the position of the gas distribution holes;

[0009] Connect the gas distribution holes and the gas distribution pipe;

[0010] Pour concrete for the bottom slab, vertical wall and the formwork.

[0011] Preferably, the formwork of the filter tank includes: an upper formwork and a lower formwork; after welding and fixing the vertical wall and the steel plate integrated with the gas distribution pipe, the method further includes:

[0012] Construct the lower formwork in the bottom space of the filter tank; wherein, the lower formwork is provided with the gas distribution holes, and the position of the gas distribution pipe corresponds to the position of the gas distribution holes;

[0013] Pour concrete for the bottom slab and vertical wall;

[0014] Construct the upper formwork on the lower formwork;

[0015] Conduct concrete pouring for the completed upper and lower formworks.

[0016] Further preferably, the concrete pouring for the bottom plate and the vertical wall includes:

[0017] Conduct concrete pouring for the bottom plate and the vertical wall to a set position.

[0018] Further preferably, after the concrete pouring for the bottom plate and the vertical wall, the method further includes:

[0019] Roughen the concrete surface at the set position.

[0020] Preferably, a plurality of air distribution pipes are integrated in the steel plate, and the method further includes:

[0021] Set the integrated positions of the respective air distribution pipes in the steel plate and the pore diameters of the air distribution pipes according to the design specifications of the air distribution holes.

[0022] Further preferably, the welding and fixing of the vertical wall and the steel plate integrated with the air distribution pipes includes:

[0023] Weld and fix the vertical wall and the steel plate integrated with the air distribution pipes according to the design specifications of the air distribution holes so that the positions of the air distribution pipes correspond to the positions of the air distribution holes.

[0024] Further preferably, the welding and fixing of the vertical wall and the steel plate integrated with the air distribution pipes includes;

[0025] Weld and fix the steel bars of the vertical wall and the steel plate integrated with the air distribution pipes to fix the steel plate and the vertical wall.

[0026] Further preferably, the steel plate is a water stop steel plate.

[0027] Further preferably, the air distribution pipes are anti-corrosion steel pipes.

[0028] In a second aspect, the present application further provides an air distribution structure for a filter tank. The structure is constructed by using the construction method of the filter tank as described in the first aspect, and includes: a bottom plate, a vertical wall, an air distribution channel, and a steel plate;

[0029] The bottom plate is welded and fixed to both ends of the bottom of the vertical wall to form a bottom space of the filter tank;

[0030] The air distribution channel is arranged in the bottom space of the filter tank, and air distribution holes are formed in the air distribution channel;

[0031] The steel plate is welded and fixed at both ends of the vertical wall, located above the bottom plate, and a gas distribution pipe corresponding to the position of the air distribution holes is passed through the steel plate;

[0032] One end of the gas distribution pipe is connected to the air distribution holes in a mating manner, and the other end is connected to a gas source device, so that gas is transported from the gas source device to the air distribution channels through the gas distribution pipe.

[0033] A construction method of a filter tank provided in this application, by setting a steel plate integrated with a gas distribution pipe, welding and fixing the steel plate in a vertical wall, making the position of the gas distribution pipe in the steel plate correspond to the position of the air distribution holes, and then constructing the formwork of the filter tank in the bottom space of the filter tank, and pouring concrete for the bottom plate, vertical wall and formwork, can effectively stabilize the position of the gas distribution pipe, ensure that the accuracy of the air distribution holes meets the design specifications, avoid the situation of re-opening the air distribution holes due to insufficient accuracy, and improve the air distribution uniformity and backwashing effect of the filter tank due to the improvement of the high precision of the gas distribution pipe.

[0034] Other features and advantages of this application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings constituting a part of this application are used to provide a further understanding of this application, and the schematic embodiments and descriptions thereof are used to explain this application. In the drawings:

[0036] Figure 1 is a schematic flow chart of the construction method of the filter tank of the preferred embodiment of this application;

[0037] Figure 2 is a schematic cross-sectional view of the positional relationship between the filter tank and the air distribution holes of the preferred embodiment of this application;

[0038] Figure 3 is a schematic cross-sectional view of the positional relationship between the filter tank and the gas distribution pipe of the preferred embodiment of this application;

[0039] Figure 4 is a schematic cross-sectional view of the positional relationship between the steel plate and the gas distribution pipe in the filter tank of the preferred embodiment of this application.

[0040] Reference numerals in the drawings: 1-bottom plate; 2-vertical wall; 3-steel plate; 4-air distribution holes; 5-gas distribution pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The technical solutions of this application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] First, some noun concepts in this application are explained.

[0043] Construction formwork: It can be understood as implementing formwork engineering, which refers to the project of formwork support and protection for processes such as concrete pouring and steel bar binding of building structures at the construction site according to architectural design requirements and standards.

[0044] Air distribution holes and air distribution pipes of V-shaped filter: One of the core technologies of V-shaped filter is its backwashing water and air distribution system, which can ensure that the backwashing water and air are evenly distributed into the filter media layer and the filtered water is evenly collected. The air distribution holes and air distribution pipes are important components of the air distribution system of V-shaped filter. Among them, the air distribution holes are usually set on the air distribution channels on one side or both sides of the filter, and they are connected to the air distribution pipes to form a complete air distribution network. As the gas transmission channel, the air distribution pipes transport compressed air from the air compressor or other gas source equipment to the air distribution channels of the filter, and then evenly distribute it into the filter media layer through the air distribution holes. Therefore, the precise construction of the air distribution holes and air distribution pipes can ensure that the gas is evenly distributed throughout the filter media layer, improving the air distribution uniformity and backwashing effect of the filter.

[0045] Based on this, as Figure 1 and combined with Figures 2 to 4 shown, the present application provides a construction method for a filter in the first aspect to effectively improve the construction accuracy of the air distribution holes and air distribution pipes of the filter, including steps 110-150:

[0046] Step 110, arrange the bottom plate and vertical walls of the filter to form the bottom space of the filter;

[0047] Specifically, in the present application, the bottom plate can be understood as the bottom plate of the filter, and the vertical walls can be understood as the walls on the front and back sides of the filter. Bind the steel bars of the bottom plate and the vertical walls to fix the bottom plate and the vertical walls to form the bottom space of the filter.

[0048] Step 120, weld and fix the vertical wall and the steel plate integrated with the air distribution pipe;

[0049] Specifically, in the present application, the air distribution pipes are not directly opened in the formwork of the filter, but are integrated in a steel plate. And this integration process can be directly processed according to the design requirements in the factory, without on-site threading and installation, which can effectively ensure the accuracy of the air distribution pipes.

[0050] Combined with Figures 2 to 4 shown, multiple air distribution pipes are integrally arranged in the steel plate, and the integration positions of each air distribution pipe in the steel plate and the aperture of the air distribution pipe are set according to the design specifications of the air distribution holes. When welding and fixing the vertical wall and the steel plate, the vertical wall and the steel plate integrated with the air distribution pipe are also welded and fixed according to the design specifications of the air distribution holes, so that the positions of the air distribution pipes correspond to the positions of the air distribution holes.

[0051] In a specific embodiment, the design specifications of the air distribution holes include "the air distribution holes are located 800 mm above the bottom plate, there are 80 air distribution holes in total, the aperture of each air distribution hole is 30 mm, and the spacing is 150 mm". Then, the air distribution pipes in the steel plate also need to be "located 800 mm above the bottom plate", and the welding and fixing positions of the steel plate and the vertical wall are set accordingly. Moreover, the arrangement of the air distribution pipes in the steel plate is "80 in total, the aperture of each air distribution pipe is 30 mm, and the spacing is 150 mm".

[0052] When welding and fixing the vertical wall and the steel plate, the steel bars of the steel plate and the vertical wall can be welded to fix the steel plate and the vertical wall.

[0053] In a more optimal embodiment, the steel plate is a water stop steel plate with a width of 300 mm and a thickness of 3 to 5 mm. The air distribution pipes are anti-corrosion steel pipes.

[0054] Step 130, construct the formwork of the filter tank in the bottom space of the filter tank;

[0055] Specifically, the formwork of the filter tank in this application includes an upper formwork and a lower formwork. That is, when constructing the formwork project of the filter tank, the formwork of the filter tank is not completed all at once. Instead, the lower formwork of the filter tank is first constructed in the bottom space of the filter tank, and then the upper formwork is constructed on the lower formwork. Moreover, air distribution holes are opened in the lower formwork so that the positions of the air distribution pipes correspond to the positions of the air distribution holes. Among them, the air distribution holes can be opened in advance in the lower formwork according to the design specifications of the air distribution holes, or can be opened in the formwork according to the positions of the air distribution pipes that have been welded and fixed in the above step 120. This application does not make a limitation, and those skilled in the art can choose the opening method of the air distribution holes according to actual construction needs.

[0056] Step 140, connect the air distribution holes and the air distribution pipes;

[0057] Specifically, connect the air distribution holes opened in the lower formwork and the air distribution pipes integrated in the steel plate one by one so that the air distribution pipes and the air distribution holes form a smooth air distribution channel.

[0058] In the above steps 110 - 140, this application stabilizes the position of the air distribution pipes in the filter tank to the greatest extent by adding a steel plate that is welded and fixed to the vertical wall of the filter tank and has air distribution pipes integrated in advance. That is, the position of the air distribution pipes in this application does not change with the change of the position of the air distribution holes in the filter tank formwork, but depends on how they are integrated in the steel plate, and how the air distribution pipes are integrated in the steel plate is set according to the design requirements. This can avoid the position deviation of the air distribution pipes caused by the concrete buoyancy and vibration during the subsequent concrete pouring to the greatest extent, as well as the influence of the technical level and proficiency of the construction personnel, and improve the construction accuracy of the air distribution pipes and even the air distribution holes.

[0059] Step 150, pour concrete into the bottom plate, the vertical wall and the formwork;

[0060] Specifically, to ensure the structural stability, when pouring concrete in this application, it includes steps 151 - 153:

[0061] Step 151, pour concrete for the bottom plate and the vertical wall;

[0062] Specifically, when pouring concrete for the bottom plate and the vertical wall, and the pouring height is at the set position to ensure there is space for subsequent construction of other projects.

[0063] In a specific embodiment, the set position is at a position 100 mm higher than the gas distribution pipe.

[0064] In a more optimal embodiment, after pouring concrete for the bottom plate and the vertical wall, it is necessary to roughen the concrete surface at the set position. Roughening is a construction technique used to treat the concrete surface, which can enhance the bond strength between new and old concrete.

[0065] Step 152, construct the upper formwork on the lower formwork;

[0066] Specifically, after constructing the lower formwork and pouring concrete for the bottom plate and the vertical wall to form a stable chassis, construct the upper formwork of the filter tank.

[0067] Step 153, pour concrete for the completed upper formwork and lower formwork.

[0068] Specifically, after all the upper formwork and lower formwork are constructed, pour concrete for the upper formwork and lower formwork. If in step 151, only pour concrete for the bottom plate and the vertical wall to the set position, then it is also necessary to pour concrete for the remaining parts of the bottom plate and the vertical wall.

[0069] In the process of steps 151 - 153 of this application, the construction and concrete pouring of the bottom plate, vertical wall, upper formwork, and lower formwork are separated according to specific steps, realizing the optimization of the construction process. The construction accuracy can be controlled in each step, which is beneficial to improving the overall construction accuracy.

[0070] A construction method of a filter tank provided by this application can effectively stabilize the position of the gas distribution pipe, ensure that the accuracy of the gas distribution holes meets the design specifications, and avoid the situation of re-opening the gas distribution holes due to insufficient accuracy. By setting a steel plate integrated with a gas distribution pipe, welding and fixing the steel plate in the vertical wall, making the position of the gas distribution pipe in the steel plate correspond to the position of the gas distribution holes, then constructing the formwork of the filter tank in the bottom space of the filter tank, and pouring concrete for the bottom plate, vertical wall, and formwork. Due to the improvement of the high precision of the gas distribution pipe, the gas distribution uniformity and backwashing effect of the filter tank can also be improved.

[0071] In a second aspect, combined with Figures 2 to 4 as shown, the present application also provides an air distribution structure for a filter tank, which is constructed by using the construction method of the filter tank described in the first aspect above, and includes: a bottom plate 1, vertical walls 2, an air distribution channel (not shown in the figure), and a steel plate 3.

[0072] Among them, the bottom plate 1 is welded and fixed at both ends of the bottom of the vertical wall 2 to form the bottom space of the filter tank. The air distribution channel is arranged in the bottom space of the filter tank, and air distribution holes 4 are provided in the air distribution channel. The steel plate 3 is also welded and fixed at both ends of the vertical wall 2 and is located above the bottom plate 1, and a gas distribution pipe 5 corresponding to the position of the air distribution hole 4 is provided through the steel plate 3. One end of the gas distribution pipe 5 is connected to the air distribution hole 4, and the other end is connected to a gas source device (not shown in the figure), so that gas is transported from the gas source device to the air distribution channel through the gas distribution pipe.

[0073] The other preferred embodiments, the technical problems that can be solved, and the technical effects that can be achieved in the second aspect of the present application are the same as those in the first aspect, and will not be described in detail here.

[0074] The preferred embodiments of the present application have been described in detail above. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application.

[0075] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any appropriate manner. To avoid unnecessary repetition, the present application will not separately describe various possible combination methods.

[0076] In addition, any combination can be made between various different embodiments of the present application as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed in the present invention.

Claims

1. A method for constructing a filter tank, characterized in that: The method comprises: Arrange the bottom plate and vertical walls of the filter tank to form the bottom space of the filter tank; Welding and fixing the vertical wall and the steel plate integrated with the gas distribution pipe; The lower template of the filter tank is constructed in the bottom space of the filter tank; wherein the lower template is provided with an air distribution hole, and the position of the air distribution pipe corresponds to the position of the air distribution hole; Connecting the gas distribution hole and the gas distribution pipe; The upper formwork of the filter tank is constructed on the lower formwork, and concrete is poured on the bottom plate, vertical wall, upper formwork and lower formwork.

2. The construction method according to claim 1, characterized in that: The upper formwork of the filter tank is constructed on the lower formwork, and concrete is poured on the bottom plate, vertical wall, upper formwork and lower formwork, including: Concrete pouring is performed on the base plate and the vertical wall; constructing the upper formwork on the lower formwork; Pour concrete on the completed upper and lower formwork.

3. The construction method according to claim 2, characterized in that: The pouring of concrete on the bottom plate and the vertical wall comprises: Concrete is poured on the bottom plate and the vertical wall to the set position.

4. The construction method according to claim 3, characterized in that: After pouring concrete on the bottom plate and the vertical wall, the method further comprises: The concrete structure surface is roughened at the set position.

5. The construction method according to claim 1, characterized in that: A plurality of gas distribution pipes are integrated in the steel plate, and the method further comprises: The integrated position of each gas distribution pipe in the steel plate and the aperture of the gas distribution pipe are set according to the design specifications of the gas distribution hole.

6. The construction method according to claim 5, characterized in that: The welding and fixing of the vertical wall and the steel plate integrated with the gas distribution pipe comprises: The vertical wall and the steel plate integrated with the air distribution pipe are welded and fixed according to the design specifications of the air distribution hole, so that the position of the air distribution pipe corresponds to the position of the air distribution hole.

7. The construction method according to claim 6, characterized in that: The welding and fixing of the vertical wall and the steel plate integrated with the gas distribution pipe includes: The steel bars of the vertical wall and the steel plate integrated with the gas distribution pipe are fixed by welding to fix the steel plate and the vertical wall.

8. The construction method according to any one of claims 1 to 7, characterized in that: The steel plate is a water-stopping steel plate.

9. The construction method according to any one of claims 1 to 7, characterized in that: The gas distribution pipe is an anti-corrosion steel pipe.

10. A filter tank air distribution structure, characterized in that: The structure is constructed using the filter tank construction method according to any one of claims 1 to 9, and comprises: a bottom plate, a vertical wall, a gas distribution channel and a steel plate; The bottom plate is welded and fixed to the two ends of the bottom of the vertical wall to form the bottom space of the filter tank; The air distribution channel is arranged in the bottom space of the filter tank, and an air distribution hole is opened in the air distribution channel; The steel plate is welded and fixed to the two ends of the vertical wall and is located above the bottom plate, and the steel plate is penetrated by the gas distribution pipe corresponding to the position of the gas distribution hole; One end of the gas distribution pipe is connected to the gas distribution hole, and the other end is connected to the gas source equipment, so that the gas is transported from the gas source equipment to the gas distribution channel through the gas distribution pipe.

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