Anti-blocking co-current flow inclined plate sedimentation tank and water collecting system

Abstract

The system comprises a plurality of water collecting main pipes and a plurality of water collecting branch pipes, and a mounting groove is formed in the top of each water collecting main pipe in the length direction; and each water collecting branch pipe is a square pipe, is pre-assembled into a branch pipe integral module through bonding, is inserted into the mounting groove in a manner of inclining relative to the horizontal plane, and is used for fixing the branch pipe integral module through a bonding agent and a connecting clamp arranged at an opening of the mounting groove. The water collecting main pipe and the branch pipe are integrally inserted and matched in a module mode, a traditional multi-round-hole drilling technology is replaced, a welding heat affected zone is eliminated, the roughness of the inner wall can be reduced to Ra3.2 micrometers from Ra12.5 micrometers, and flocculates are prevented from being hooked by carbonized protrusions from the source. The branch pipe overall module is obliquely inserted into the mounting groove, and the assembling efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more specifically to an anti-clogging type co-current inclined plate sedimentation tank and water collection system. Background Technology

[0002] Due to the highly efficient separation characteristics of co-current flow in inclined plate sedimentation tanks, the theoretical surface loading of co-current flow sedimentation tanks can reach 3–5 times that of counter-current flow. However, existing technologies (such as patent document CN108325241A) still have two major bottlenecks:

[0003] 1. Structural design flaws: Traditional water collection holes are located on the center line of circular water collection branch pipes, making it easy for flocculent matter to be sucked in. The back-mounted design of the water collection branch pipes (located on the back of the inclined plate) causes interference at the mud-water interface, exacerbating the floating of flocculent matter.

[0004] 2. Assembly Process Defects: Traditionally, each main water collection pipe requires numerous branch pipes, necessitating the creation of corresponding mounting holes on the main pipe followed by welding. This connection method results in a water- and mud-blocking surface at the junction of the branch pipes and the main pipe, leading to a reduction in the flow cross-section of the mounting holes over time, eventually causing blockage. The traditional method requires individual drilling of circular holes on the main pipe to connect to the branch pipes, using plastic welding, which is cumbersome and inefficient. Furthermore, the high welding temperatures cause carbon loss in the pipe wall, forming hard compounds such as tungsten carbide (hardness HV≥1200), which protrude into the branch pipes and form microscopic rough peaks on the inner wall, becoming anchoring points for flocculants. These carbonized protrusions disrupt laminar flow, creating vortex zones with localized flow velocity reductions of ≥40%, promoting sludge deposition. Defects such as weld beads and undercut cause flow separation, forming low-pressure stagnation zones that easily capture tiny flocculants. Welding each branch pipe individually is inefficient, and the accumulated welding heat causes deformation of the main pipe, requiring secondary straightening and increasing manufacturing costs.

[0005] Therefore, how to provide a clog-resistant, co-current flow inclined plate water collection system is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art.

[0007] Therefore, one objective of this invention is to provide a clog-resistant co-current inclined plate sedimentation tank water collection system, solving the problems caused by welding the traditional main and branch water collection pipes. Another objective is to address the problem of flocculants easily being sucked into the branch water collection pipes, causing blockages.

[0008] The technical solution of this invention is a water collection system for an anti-clogging type co-current inclined plate sedimentation tank, comprising:

[0009] Multiple water collection pipes, each of which has an installation groove along its length at the top;

[0010] Multiple water collection branch pipes, each of which is a square pipe, are pre-assembled into a branch pipe module by bonding. The module is inserted into the mounting groove at an angle relative to the horizontal plane and fixed by adhesive and connecting clips located at the opening of the mounting groove.

[0011] According to the water collection system of the present invention, the mounting groove is a rectangular groove, the connecting clip has a vertical part, the top of the vertical part has a snap-fit ​​part whose bottom surface fits against the outer wall of the main water collection pipe, and the bottom has a horizontal part perpendicular to it and facing the inside of the mounting groove.

[0012] According to the water collection system of the present invention, each of the water collection branch pipes has multiple water collection holes, which are located above the center line of the water collection branch pipe.

[0013] According to the water collection system of the present invention, each of the water collection branch pipes has nine water collection holes, the five water collection holes at the bottom are equally spaced with a spacing of L1, and the four water collection holes at the top are equally spaced with a spacing of L2, and L2 = (1.5-3)L1.

[0014] According to the water collection system of the present invention, the center of the water collection hole is located 10-13 mm above the center line of the water collection branch pipe.

[0015] According to the water collection system of the present invention, the insertion end of each of the water collection branch pipes is inclined. According to the water collection system of the present invention, the branch pipe module is inserted into the mounting groove at an angle of 35°-45° relative to the horizontal plane.

[0016] The present invention also provides a clog-resistant co-current inclined plate sedimentation tank, comprising:

[0017] Pool body;

[0018] As described above, the water collection system is located inside the pool, and each water collection branch pipe in the water collection system has an anti-detachment groove on its outer wall along the length direction.

[0019] The inclined plate system includes multiple semi-hexagonal inclined plates, each of which has anti-slip hooks on both sides that are adapted to the anti-detachment groove.

[0020] According to the sedimentation tank of the present invention, each of the semi-hexagonal inclined plates includes an inclined plate body and two side plates located on both sides of the inclined plate body, the included angle between the inclined plate body and the side plates being 130°-150°; each side plate extends horizontally outward at one end away from the inclined plate body and bends inward at the end to form the anti-slip hook; so that the water collection branch pipe is located on both sides of the semi-hexagonal inclined plate.

[0021] According to the sedimentation tank of the present invention, the anti-detachment groove is located on the connection surface of the water collection branch pipe and the semi-hexagonal inclined plate. The middle surface of the connection surface protrudes upward and is higher than the base surfaces on both sides. Two inner inclined grooves that cooperate with the anti-slip hook are formed between the middle surface and the two base surfaces. Each water collection branch pipe has a sealing cap at the end away from the main water collection pipe.

[0022] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention uses an installation groove to insert the main water collection pipe and branch pipe into a single module, replacing the traditional multi-hole drilling process. This eliminates the heat-affected zone from welding, reducing the inner wall roughness from Ra12.5μm to Ra3.2μm, and preventing carbonized protrusions from hooking onto flocculants at the source. The branch pipe module is inserted into the installation groove at an angle, improving assembly efficiency by 6 to 7 times, increasing the assembly efficiency of the co-current flow sedimentation tank by a factor of 6.

[0024] 2. The vertical part of the connecting card of the present invention is used for limiting and locking, and the locking part is attached to the outer wall of the water collection main pipe and can be fixed by adhesive. The horizontal part can resist the impact of water flow, which solves the problem of insufficient strength and loosening of branch pipe caused by traditional welding deformation.

[0025] This invention features an offset water collection hole to prevent clogging. The center of the water collection hole is moved upward by 10–13 mm, allowing flocculent material to settle and detach by gravity, reducing the volume of flocculent material entering the hole by 90%. This invention uses a gradient spacing to optimize the flow field. The large spacing between the three upper holes reduces negative pressure suction, preventing the intake of flocculent material in high-concentration areas; the small spacing between the six lower holes enhances water collection efficiency, enabling the collection of optimally purified water within the water collection branch pipe.

[0026] 4. The inclined insertion end has an angle of 35°–45° to guide the water flow smoothly into the main water collection pipe.

[0027] 5. The anti-detachment groove and anti-slip hook of this invention are interlocked, and the semi-hexagonal inclined plate and the branch pipe form a self-locking structure, which can resist water flow impact force ≥200N and increase the service life by 3 times. It is easy to assemble and greatly improves construction efficiency.

[0028] In summary, this invention achieves synergistic effects in anti-clogging, assembly, and flow field: it eliminates blockage at the junction of the water collection branch pipe and the main water collection pipe; the offset water collection holes reduce the intake of flocculants from the source, and combined with modular non-welded assembly, it completely eliminates deposition nuclei caused by carbonized rough surfaces; it can dynamically self-clean, the gradient hole spacing matches changes in mud and water concentration, and the superimposed flow field optimization of inclined plate insertion reduces the clogging rate by 98%; it improves engineering friendliness, the semi-hexagonal inclined plate snap-fit ​​and rectangular groove modular assembly greatly shorten the construction cycle of large-scale water purification plants and also reduce maintenance costs caused by clogging. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 A schematic diagram of the water collection system of an anti-clogging co-current inclined plate sedimentation tank provided by the present invention;

[0031] Figure 2 The diagram illustrates the connection between the main water collection pipe and the connecting card;

[0032] Figure 3 The diagram illustrates the installation of the branch pipe module, the main water collection pipe, and the connecting clips.

[0033] Figure 4 The diagram illustrates the structure of the connector card;

[0034] Figure 5 A schematic diagram illustrating a single water collection branch pipe is shown;

[0035] Figure 6 The cross-sectional view of the water collection branch pipe is shown;

[0036] Figure 7 The diagram illustrates the structure of the sealing cap;

[0037] Figure 8 The diagram illustrates the structure of the semi-hexagonal inclined plate.

[0038] Figure 9 The cross-sectional view of the semi-hexagonal inclined plate is shown;

[0039] Figure 10 A schematic diagram illustrating the installation of the main water collection pipe, branch water collection pipes, and semi-hexagonal inclined plate is shown.

[0040] Figure 11 The diagram illustrates the installation of the semi-hexagonal inclined plate and the water collection branch pipe. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Traditionally, each main water collection pipe requires numerous branch pipes, necessitating the creation of corresponding mounting holes on the main pipe before welding. This traditional method not only requires drilling holes individually on the main pipe but also results in mounting holes on the main pipe being smaller than the inner diameter of the branch pipes. This leads to the formation of sludge rings at the junction of the branch pipes and the main pipe, easily causing blockages. Furthermore, the junction of the branch pipes and the main pipe requires plastic welding, which is inefficient. The high welding temperatures cause carbon loss from the pipe wall, forming hard compounds such as tungsten carbide. These protrusions into the pipe wall create microscopic rough peaks, acting as anchor points for flocculants. These carbonized protrusions disrupt laminar flow, creating vortex zones with localized flow velocity reductions of ≥40%, promoting sludge deposition. Defects such as weld beads and undercuts cause flow separation, forming low-pressure stagnation zones that easily attract tiny flocculants. Welding each branch pipe individually is inefficient, and the accumulated welding heat causes deformation of the main water collection pipe, requiring secondary straightening and increasing manufacturing costs.

[0044] Therefore, the technical solution of the present invention is a water collection system for an anti-clogging type co-current inclined plate sedimentation tank, see appendix. Figure 1-11 It includes multiple main water collection pipes 1 and multiple branch water collection pipes 2; each of the main water collection pipes 1 has an installation groove 11 along its length at the top; each of the branch water collection pipes 2 is a square tube, which is pre-assembled into a branch pipe module by bonding, and inserted into the installation groove 11 in an inclined manner relative to the horizontal plane, and the branch pipe module is fixed by adhesive and a connecting card 12 located at the opening of the installation groove 11.

[0045] Advantageously, see appendix. Figure 1-4 The mounting groove 11 is a rectangular groove, and the connecting card 12 has a vertical part 121. The top of the vertical part 121 has a snap-fit ​​part 122 whose bottom surface fits against the outer wall of the water collection main pipe 1, and the bottom has a horizontal part 123 that is perpendicular to it and faces the inside of the rectangular groove.

[0046] Because traditional water collection holes are located on the center line of circular water collection branch pipes, directly facing the water flow area, flocculent matter is easily drawn in. See appendix. Figure 5 Each of the water collection branch pipes 2 has multiple water collection holes 21, and the center of each water collection hole 21 is arranged above the center line of the water collection branch pipe 2.

[0047] In a preferred embodiment of the present invention, each of the water collection branch pipes 2 has nine water collection holes 21. The five water collection holes 21 at the bottom are equally spaced with a spacing of L1, and the four water collection holes 21 at the top are equally spaced with a spacing of L2, and L2 = (1.5-3)L1.

[0048] More advantageously, the center of the water collection hole 21 is offset from the center line of the water collection branch pipe 2 by 10-13 mm.

[0049] In one embodiment of the present invention, the insertion end 23 of each of the water collection branch pipes 2 is an inclined surface. The entire branch pipe module is inclined at 35°-45° relative to the horizontal plane. Figure 1 It is inserted into the mounting slot 11 at the medium angle (A).

[0050] This invention also provides a clog-resistant co-current inclined plate sedimentation tank, comprising a tank body, the aforementioned water collection system, and an inclined plate system, as well as facilities and equipment for water inlet, water outlet, sludge collection, sludge discharge, and venting (these utilize existing technology and will not be described in detail here); the water collection system is located within the tank body, see attached figure. Figure 6-11 Each of the water collection branch pipes 2 in the water collection system has an anti-detachment groove 22 on its outer wall along the length direction; the inclined plate system includes multiple semi-hexagonal inclined plates 3, and each of the semi-hexagonal inclined plates 3 has an anti-slip hook 31 on both sides that is adapted to the anti-detachment groove 22.

[0051] The back-mounted design of the water collection branch pipe (located on the back of the inclined plate) causes interference at the mud-water interface, exacerbating the floating of flocculants. See Appendix for details. Figure 8 and 9 Each of the semi-hexagonal inclined plates 3 includes an inclined plate body 32 and two side plates 33 located on both sides of the inclined plate body 32. The included angle between the inclined plate body 32 and the side plates 33 is 130°-150°. Each side plate 33 extends horizontally outward from the end away from the inclined plate body 32 and bends inward at the end to form the anti-slip hook 31. This allows the water collection branch pipe 2 to be located on both sides of the semi-hexagonal inclined plate 3.

[0052] See appendix Figure 6 and 11 The anti-detachment groove 22 is located on the connection surface between the water collection branch pipe 2 and the semi-hexagonal inclined plate 3. The middle surface 25 of the connection surface protrudes upward and is higher than the two base surfaces 26. Two inner inclined grooves that cooperate with the anti-slip hook 31 are formed between the middle surface 25 and the two base surfaces 26. Each end of the water collection branch pipe 2 away from the main water collection pipe 1 is sealed with a sealing cap 24. See the attached document for the sealing cap 24. Figure 7 Its inner shape is adapted to the shape of the end of the water collection branch pipe 2 that is away from the main water collection pipe 1.

[0053] In embodiments of the present invention, the main water collection pipe 1 can be made of ABS, PVC, or SUS304 stainless steel, with a diameter of 120-150mm. A rectangular mounting groove 11 is opened at the top, with a width of 42mm and a depth of 15mm. The branch water collection pipe 2 can be a square pipe (outer diameter 40×40mm, wall thickness 2.5mm), with the inner wall polished to Ra3.2μm. The square pipe material can be ABS, PVC, or stainless steel. The connecting clip 12 can be an elastic stainless steel spring with a clip depth of 5mm and a pre-tightening force ≥50N. The semi-hexagonal inclined plate 3 can be made of ABS, PVC, or SUS304 stainless steel. The angle between the inclined plate body 32 and the side plate 33 can be 140°, and the anti-slip hook 31 height can be 3mm.

[0054] The assembly steps of the present invention include:

[0055] Step 1: Process the water collection branch pipes. Process 9 water collection holes 21 on each water collection branch pipe. The diameter of the water collection holes 21 is 8-10mm; the center line of the hole position is shifted 10-13mm; the spacing: the spacing of the five holes at the bottom L1 = 50mm, and the spacing of the four holes at the top L2 = 100-150mm. Pre-assemble the branch pipe module by bonding multiple water collection branch pipes 21 together using ABS or PVC special adhesive / welding stainless steel pipes into an integral module using laser or argon arc welding.

[0056] Step 2: Connecting the inclined plate to the branch pipe: Press the anti-slip hooks 31 on both sides of the semi-hexagonal inclined plate 3 into the anti-detachment grooves 22 of the water collection branch pipe to form a self-locking mechanism; cover the end of the water collection branch pipe 2 away from the main water collection pipe with a cap 24 (which can be glued with adhesive), the cap 24 having small vent holes (in... Figure 11 (Not shown in the text).

[0057] Step 3: Modular installation. Insert the beveled insertion end 23 of the branch pipe module into the rectangular groove of the main pipe at a 40° angle. Attach the branch pipe to the main pipe using ABS or PVC special adhesive, or weld the stainless steel pipe to the connecting clip 12 using laser or argon arc welding, and attach it to the outer wall of the main pipe.

[0058] Step 4: Insert the anti-slip hooks on both sides of the semi-hexagonal inclined plate into the anti-detachment grooves of the water collection branch pipe from top to bottom. This forms the water collection inclined plate unit. Then, install it into the pool according to the layout requirements of the usage scenario.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] The working process of this invention:

[0061] In the sludge-water separation stage, this invention achieves efficient separation. The flocculated mixture flows into the semi-hexagonal inclined plate 3, and the sludge slides down along the front; the supernatant flows along the side to the collection hole 21. The 140° angle of the inclined plate increases the probability of collision for the downward-moving sludge, increasing the sludge sliding speed. The supernatant enters the collection branch pipe from the offset collection hole 21; the position of the collection hole 21 is 10-13 mm higher than the center of the collection branch pipe, and the flocculent settles back due to gravity; the gradient spacing L2 = (1.5-3)L1, with a large spacing in the upper low-concentration zone to reduce suction, and a small spacing in the lower high-concentration zone to maintain flow. The intake of micro-flocculated particles is reduced by 90%, and no blockage was observed during 6 months of experimental operation.

[0062] The present invention optimizes the dynamic flow field. The inclined insertion end 23 and the 40° inclination angle guide the water flow smoothly into the main water collection pipe and avoid vortices. The semi-hexagonal inclined plate design increases the probability of sludge collision and slides down the inclined plate 3 to the sludge area at the lower end of the inclined plate (not shown in the figure).

[0063] This invention features modular assembly, reducing installation time from seven days to one day with the addition of N-pipes; the non-welded structure extends the lifespan of the water collection system to 5-7 years.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A kind of anti-blocking type of same direction flow inclined plate sedimentation tank's water collection system, it is characterized in that, The utility model relates to a water collecting system, including: a plurality of water collecting main pipes (1), each of the water collecting main pipes (1) is provided with an installation groove (11) on the top along the length direction; a plurality of water collecting branch pipes (2), each of the water collecting branch pipes (2) is a square tube, and the water collecting branch pipes (2) are pre-assembled into a branch pipe integral module by bonding, are inserted into the installation groove (11) in an inclined manner relative to the horizontal plane, and the branch pipe integral module is fixed by bonding agent and a connecting clamp (12) provided at the opening of the installation groove (11).

2. The anti-blocking type of parallel flow inclined plate sedimentation tank water collecting system according to claim 1, characterized in that, The installation groove (11) is a rectangular groove, and the connecting clamp (12) has a vertical part (121), the vertical part (121) is provided with a clamping part (122) on the top, the clamping part (122) has a bottom surface that is attached to the outer wall of the water collecting main pipe (1), and the bottom is provided with a horizontal part (123) perpendicular to the vertical part (121) and faces the inside of the rectangular groove.

3. The anti-blocking type of parallel flow inclined plate sedimentation tank water collecting system according to claim 1, characterized in that, Each of the water collecting branch pipes (2) is provided with a plurality of water collecting holes (21), and the water collecting holes (21) are located above the center line of the water collecting branch pipe (2).

4. The anti-blocking type parallel flow inclined plate sedimentation tank water collecting system according to claim 3, characterized in that, Each of the water collecting branch pipes (2) is provided with nine water collecting holes (21), five of which are distributed at equal intervals at the lower part, the interval is L1, four of which are distributed at equal intervals at the upper part, the interval is L2, and L2=(1.5-3)L1.

5. The anti-blocking type parallel flow inclined plate sedimentation tank water collecting system according to claim 3, characterized in that, The center of the water collecting hole (21) is located 10-13 mm above the center line of the water collecting branch pipe (2).

6. The anti-blocking type parallel flow inclined plate sedimentation tank water collecting system according to claim 3, characterized in that, The insertion end (23) of each of the water collecting branch pipes (2) is inclined.

7. The anti-blocking type parallel flow inclined plate sedimentation tank water collecting system according to claim 6, characterized in that, The branch pipe integral module is inserted into the installation groove (11) in an inclined manner relative to the horizontal plane by 35°-45°.

8. A clogging-preventing type parallel-flow inclined plate sedimentation tank, characterized by The utility model relates to a water collecting system, including: a pool body; the water collecting system as claimed in any one of claims 1-7 is arranged in the pool body, and each of the water collecting branch pipes (2) in the water collecting system is provided with an anti-disengagement groove (22) along the length direction on the outer wall; an inclined plate system including a plurality of half-hexagonal inclined plates (3), each of the half-hexagonal inclined plates (3) is provided with an anti-slip disengagement hook (31) on both sides that is adapted to the anti-disengagement groove (22).

9. The anti-clogging type parallel flow inclined plate sedimentation tank according to claim 8, characterized by Each of the half-hexagonal inclined plates (3) includes an inclined plate body (32), two side plates (33) located on both sides of the inclined plate body (32), and the included angle between the inclined plate body (32) and the side plate (33) is 130°-150°; each of the side plates (33) is horizontally extended outward from one end away from the inclined plate body (32) and is bent inward at the end to form the anti-slip disengagement hook (31); and the water collecting branch pipe (2) is located on both sides of the half-hexagonal inclined plate (3).

10. The anti-clogging type parallel flow inclined plate sedimentation tank according to claim 9, characterized by The anti-disengagement groove (22) is located on the connecting surface of the water collecting branch pipe (2) and the half-hexagonal inclined plate (3), the middle surface (25) of the connecting surface is protruded upward and is higher than the two side surfaces (26), two inner inclined grooves that are matched with the anti-slip disengagement hook (31) are formed between the middle surface (25) and the two side surfaces (26); and each of the water collecting branch pipes (2) is sealed and covered with a plugging cover (24) away from the water collecting main pipe (1).

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