Pressure flow annular water distribution device

Abstract

The utility model discloses a pressure flow annular water distribution device, and belongs to the technical field of sewage treatment. The water distribution mixer is a sewage uniform distribution device; the sewage uniform distribution device comprises a water distribution main pipe, water distribution branch pipes and branch pipe water distribution caps; a water outlet, a raw water inlet and a circulating water inlet are formed in the top of the water distribution mixer; the water distribution main pipe comprises a second pipe section clung to the inner wall of the reaction tank, a first pipe section parallel to the bottom of the reaction tank and a third pipe section; the first pipe section, the second pipe section and the third pipe section are sequentially connected end to end through the pipeline reducing piece; the water outlet is connected with the other port of the first pipe section; the other port of the third pipe section is connected with the opening end of a branch pipe water diversion cap which is vertically downward through a pipeline reducing piece, and the other end of the branch pipe water diversion cap is connected with the upper part of a supporting and fixing embedded part; connecting holes are formed in the periphery of the side face of the branch pipe water distribution cap and connected with water distribution branch pipes. The device can solve the problems that the water distribution branch pipes fall off due to weight increment caused by blockage, water distribution is not uniform, and sewage mixing is not sufficient.

Description

Technical Field

[0001] The present application belongs to the technical field of sewage treatment and relates to a pressure flow annular water distribution device. Background Art

[0002] ‌Water distribution technology for hydrolysis acidification tanks and UASB anaerobic reaction tanks‌ is a key technology in the field of sewage treatment. It uses a specific water distribution device to evenly distribute sewage to the bottom of the tank, so that the sewage is fully in contact with microorganisms for sewage treatment. Currently, there are two types of water distribution forms on the market for hydrolysis acidification tanks and UASB anaerobic reaction tanks that use flocculent bacteria: "point water distribution" and "tube water distribution".

[0003] "Point-type water distribution" uses a steel hose as a water distribution branch pipe, and the upper and lower ends of the water distribution branch pipe are fixed with clamps. The upper manifold relies on the water level difference to distribute the gravity flow to the water distribution riser at each point of the pool body. The service area of ​​each point is 1m 2 The "pipe type water distribution" adopts the bottom water inlet form. The connection method between the water distribution main pipe and the water distribution branch pipe is similar to the "comb" structure. The water distribution branch pipe is similar to the "comb teeth", and the water distribution main pipe is similar to the "comb handle". Each branch pipe corresponds to a water distribution point.

[0004] Disadvantages of the two water distribution structures: "Point-type water distribution" relies on the gravity flow of water level difference to distribute sewage. When the operating load is reduced, the sewage flow rate decreases, the flow rate of the water distribution branch pipe decreases, and the water distribution branch pipe is prone to blockage. When the water distribution branch pipe is blocked, the deadweight of the pipe increases, the clamp connecting the top water distributor is subjected to increased force, the clamp is prone to loosening, and the water distribution branch pipe is at risk of falling off. "Pipe-type water distribution" increases the consumables of water distribution pipes because each branch pipe corresponds to a water distribution point. The water distribution branch pipe and the main pipe are generally fixed by welding, which makes cleaning and maintenance difficult. In order to save consumables of water distribution pipes, the aperture of the opening of the water distribution branch pipe is enlarged, resulting in the service area of ​​the pores may not be enough to cover the entire area, and the sewage fluidity is reduced, resulting in uneven water distribution. The disturbance force of the sewage is not enough, which forms a dead corner in the reactor and reduces the system treatment efficiency.

[0005] In view of the above two water distribution problems, a pressure flow annular cyclone water distribution device is proposed for use in hydrolysis acidification tanks or UASB anaerobic reaction tanks operating with flocculent bacteria. Utility Model Content

[0006] In order to solve the above problems, the present application proposes a pressure flow annular water distribution device. The water distribution device can effectively solve the technical problems of the current water distribution device, such as the blockage, weight gain and shedding of the water distribution branch pipe, the inconvenience of cleaning and maintenance of the water distribution branch pipe, the inability to achieve uniform water distribution of sewage in the reaction tank due to the opening of the water distribution branch pipe, and the inability to fully mix the sewage in the reactor to form dead corners.

[0007] The specific technical solutions of this application are as follows:

[0008] A pressure flow annular water distribution device, characterized in that it comprises: a water distribution mixer, a sewage uniform distribution device; the sewage uniform distribution device comprises a water distribution main pipe, a water distribution branch pipe, and a branch pipe water distribution vent;

[0009] The top of the water distributor mixer is provided with a water outlet, a raw water inlet, and a circulating water inlet;

[0010] The water distribution main pipe includes a second pipe section close to the inner wall of the reaction tank, a first pipe section parallel to the bottom of the reaction tank, and a third pipe section; the first pipe section, the second pipe section, and the third pipe section are connected end to end in sequence through a pipe reducer; the water outlet is connected to the other end of the first pipe section; the other end of the third pipe section is connected to the open end of a branch pipe water distribution cap extending vertically downward through a pipe reducer, and the other end of the branch pipe water distribution cap is connected to the upper part of the supporting fixed embedded part;

[0011] The side of the branch pipe water distribution vent is provided with connection holes around it, and the connection holes are connected to the water distribution branch pipes. The various water distribution branch pipes are connected into one body through the branch pipe water distribution vent to evenly distribute the branch pipe water flow; the water distribution branch pipes are arranged in a ring shape below the water distribution main pipe; the bottom of the water distribution branch pipe is evenly spaced and provided with a plurality of openings;

[0012] A fluid mixing component is arranged inside the water distribution mixer; the fluid mixing component includes a shaft, a plurality of unit blades, and an axis plate; one side of the axis plate is connected to the end of the shaft, and the other side is connected to one end of the water distribution mixer; the unit blades are evenly spaced on the outer wall of the shaft.

[0013] Optionally, the bottom of the water distribution branch pipe is opened at an angle of 30-65 degrees downward, the hole diameter is 18-22 mm, the holes are arranged in a staggered manner, and the service area of ​​a single hole is ≤1.5m 2 .

[0014] Optionally, the number of the water outlets is ≥2, and the number of the sewage distribution devices is set to match the number of the water outlets.

[0015] Optionally, a fluid mixing component is provided inside the water distributor mixer;

[0016] The fluid mixing assembly includes a shaft, a plurality of unit blades, and a shaft plate; one side of the shaft plate is connected to the end of the shaft, and the other side is connected to one end of a water distributor mixer; the unit blades are evenly spaced on the outer wall of the shaft.

[0017] Preferably, the fluid mixing assembly is detachable; the unit blades are composed of two semicircular metal plates, which are folded at an angle of 35-75° to each other and alternately overlapped and connected to the shaft; the connection method includes welding.

[0018] Optionally, water holes are evenly and spaced apart at the bottom of the third pipe section of the water distribution main pipe, and the water holes are connected to the open ends of the branch pipe water distribution caps extending vertically downward, and the other ends of the branch pipe water distribution caps are connected to the supporting fixed embedded parts;

[0019] The side surfaces of the branch pipe water distribution cap are provided with openings around them, and the openings are connected to the water distribution branch pipes, and the various water distribution branch pipes are connected into one body through the branch pipe water distribution cap.

[0020] Optionally, an anti-corrosion layer is provided inside the water distribution mixer; the thickness of the anti-corrosion layer is ≥280 μm; and the anti-corrosion layer includes an epoxy coal tar paint anti-corrosion layer.

[0021] Optionally, the water distribution main support adopts angle steel with U-shaped plastic-coated pipe clamp.

[0022] Optionally, the water distribution main pipe and the water distribution branch pipe are both made of stainless steel; and the water distribution mixer is made of carbon steel.

[0023] Optionally, the opening of the branch pipe water diversion vent is a hole opened by a saddle hole cutting machine.

[0024] The beneficial effects of this application include but are not limited to:

[0025] 1. The water distribution main pipe of the present application comprises a second pipe section close to the inner wall of the reaction tank, a first pipe section parallel to the bottom of the reaction tank, and a third pipe section; when sewage passes through the second pipe section, under the influence of gravity, the speed is fast and the impact is large, which helps the sewage to enter the third pipe section in large quantities and quickly, and the pipe reducer is a two-way pipe (a pipe reducer used to connect the second pipe section and the third pipe section, one end of which is connected to the second pipe section in the vertical direction, and the other end is connected to the third pipe section in the horizontal direction), so it has stronger impact resistance and will not be disconnected under gravity.

[0026] The water distributor mixer of the present application is provided with a fluid mixing component inside. The sewage fluid enters the mixer under the action of its own kinetic energy and is forced to produce cutting, twisting, separation and mixing effects under the action of the unit blades of the fluid mixing component, so that the two streams of sewage are fully mixed in the water distributor mixer. The bottom of the water distribution branch pipe is evenly spaced with a plurality of openings; the sewage enters the pool through the openings of the water distribution branch pipe, and the circular arrangement of the water branch pipes ensures uniform water distribution.

[0027] 2. The bottom of the water distribution branch pipe of this application is opened at an angle of 30-65 degrees downward, the hole diameter is 18-22mm, the holes are arranged in a staggered manner, and the service area of ​​a single hole is ≤1.5m 2 More preferably, the bottom of the water distribution branch pipe has a hole inclined downward at 45°, the hole diameter is 20mm, the holes are arranged in a staggered manner, and the service area of ​​a single hole is ≤1.5m 2 The aperture specifications and arrangement further improve the uniformity of water distribution and achieve water distribution without dead corners.

[0028] 3. The unit blades of the present application are composed of two semicircular metal plates, which are folded at an angle of 35-75° (preferably 45°) and alternately overlapped and connected to the shaft; the unit blades of this structure can separate and cut the sewage entering the water distribution mixer more fully, and mix it more fully and evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 This is a top view of the pressure flow annular water distribution device of this application;

[0031] Figure 2 This is a schematic diagram of the vertical cross-sectional structure of the pressure flow annular water distribution device of the present application;

[0032] Figure 3 It is a structural schematic diagram of a local component water distribution mixer;

[0033] Figure 4 It is a schematic diagram of the structure of a local component fluid mixing assembly.

[0034] List of parts and reference numerals:

[0035] 1 water outlet, 2 raw water inlet, 3 circulating water inlet, 4 water pump interface, 5 fluid mixing component, 501 shaft, 502 shaft plate, 503 unit blade, 6 water distribution mixer, 7 reaction tank, 8 water distribution main valve, 9 water distribution main support, 10 water distribution main embedded casing, 11 water distribution main, 1101 first pipe section, 1102 second pipe section, 1103 third pipe section, 12 branch pipe water distribution cap, 13 support fixing embedded parts, 14 water distribution branch pipe support, 15 opening, 16 water distribution mixer support, 17 U-shaped plastic-coated pipe clamp, 18 water distribution branch pipe, 19 pipe reducer. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0039] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0043] As a specific implementation method, Figure 1-4As shown, a pressure flow annular water distribution device includes: a water distribution mixer 6, a sewage uniform distribution device; the sewage uniform distribution device includes a water distribution main pipe 11, a water distribution branch pipe 18, a supporting fixed embedded part 13, and a branch pipe water distribution vent 12;

[0044] The top of the water distributor mixer 6 is provided with a water outlet 1, a raw water inlet 2, and a circulating water inlet 3 in sequence;

[0045] The water distribution main pipe 11 includes a second pipe section 1102 close to the inner wall of the reaction tank 7, a first pipe section 1101 parallel to the bottom of the reaction tank 7, and a third pipe section 1103; the first pipe section 1101, the second pipe section 1102, and the third pipe section 1103 are connected end to end in sequence through a pipe reducer 19; the water outlet 1 is connected to another port of the first pipe section 1101 (i.e., an end port of the first pipe section 1101 away from the second pipe section 1102); another port of the third pipe section 1103 (a port not connected to the second pipe section 1102, i.e., an end port away from the second pipe section 1102) is connected to an open end of a vertically downward branch pipe water distribution buoy 12 through a pipe reducer 19, and the other end (bottom) of the branch pipe water distribution buoy 12 is connected to the upper part of the support and fixed embedded part 13, and the bottom of the support and fixed embedded part 13 is connected to the bottom of the reaction tank 7 (in this embodiment, it is a full welding connection);

[0046] The side surfaces (front, rear, left and right) of the branch pipe water dividing cap 12 are provided with connection holes, to which the water distribution branch pipes 18 are respectively connected. The water distribution branch pipes 18 are connected into one through the branch pipe water dividing cap 12 to evenly distribute the branch pipe water flow; the water distribution branch pipes 18 are arranged in a ring shape below the water distribution main pipe 11, and the ring bends are connected through pipe reducers 19.

[0047] A fluid mixing component 5 is arranged inside the water distribution mixer 6; the fluid mixing component 5 includes a shaft 501, a plurality of unit blades 503, and an axis plate 502; one side of the axis plate 502 is connected to the end of the shaft 501, and the other side is connected to one end of the water distribution mixer 6; the unit blades 503 are evenly spaced on the outer wall of the shaft 501.

[0048] like Figure 1As shown, this embodiment is provided with two water outlets 1, and each water outlet 1 corresponds to a ring-shaped sewage uniform distribution device; the raw water inlet 2 and the circulating water inlet 3 are located between the two water outlets 1. In this embodiment, the material of the water distributor 6 is carbon steel, and the water distribution branch pipe 18 and the water distribution main pipe 11 are 304 stainless steel pipes; in fact, the material of the water distributor 6, the water distribution main pipe 11, and the water distribution branch pipe 18 can be selected according to the corrosiveness of the sewage, and the specific material of the water distributor 6 is within the protection scope of this application. An on-site pressure gauge is provided on the outside of one end of the water distributor 6. Practitioners can understand the internal pressure changes of the water distributor 6 based on the pressure gauge, and then grasp the mixing degree / working state of the internal liquid.

[0049] The first section of the pipe crosses the inside of the hydrolysis acidification tank or the anaerobic reaction tank 7 , and a pre-buried casing 10 of a water distribution main pipe is provided at the crossing position and sleeved on the outside of the water distribution main pipe 11 .

[0050] A water pump is connected to one side of the water distributor 6 (a water distributor support 16 for supporting the water distributor 6 is provided below the water distributor 6) to provide power. The supporting fixed embedded part 13 is made of 300mm×300mm×14mm carbon steel plate, which is integrally formed with the building and consists of a steel plate and anchor bars fixed on one side of the steel plate. An epoxy coal tar paint anti-corrosion layer is provided on the surface of the supporting fixed embedded part 13, and the thickness of the anti-corrosion layer is ≥280μm. A water distribution main valve 8 is provided at the first pipe section 1101 near the water outlet 1. One side of the second pipe section 1102, the third pipe section 1103 and the water distribution branch pipe 18 of the water distribution main pipe 11 is provided with a water distribution main pipe support 9 and a water distribution branch pipe support 14 for supporting the pipes; the water distribution main pipe support 9 / water distribution branch pipe support 14 is composed of an angle steel and a U-shaped plastic-coated pipe clamp 17 fixedly connected to the upper end of the angle steel for fixing the water distribution main pipe 11 / water distribution branch pipe 18 (that is, the angle steel contains the U-shaped plastic-coated pipe clamp 17), and the bottom of the angle steel is fixedly connected to the reaction tank 7 building.

[0051] Specifically, during use, the water pump interface 4 connected to the water distribution mixer 6 is opened, and the sewage to be treated and the hydrolysis acidification tank (or the circulating sewage of the anaerobic reaction tank 7) are first respectively introduced into the water distribution mixer 6 through the raw water inlet 2 and the circulating water inlet 3. The sewage fluid enters the mixer under the action of its own kinetic energy and is forced to produce cutting, twisting, separation and mixing effects under the action of the unit blades 503, so that the two streams of sewage are fully mixed in the water distribution mixer 6 without dead angles; the water distribution main valve 8 is opened, and the mixed sewage begins to enter the water distribution main 11, and flows through the first pipe section 1101, the second pipe section 1102 and the third pipe section 1103 respectively. In the pipeline of the third pipe section 1103, the sewage is evenly distributed to each water distribution branch pipe 18 through the branch pipe water distribution 12. The sewage enters the pool through the opening 15 of the water distribution branch pipe 18. The annular arrangement of the water distribution branch pipe 18 combined with the setting of the opening 15 ensures uniform water distribution.

[0052] When the sewage passes through the second pipe section 1102, under the influence of gravity, the speed is fast and the impact is large, which helps the sewage to enter the third pipe section 1103 in large quantities and quickly. In addition, the pipe reducer 19 is a two-way pipe for changing lanes (the pipe reducer 19 used to connect the second pipe section 1102 and the third pipe section 1103, one end of which is connected to the second pipe section 1102 in the vertical direction, and the other end is connected to the third pipe section 1103 in the horizontal direction), so it has stronger impact resistance (the buffering effect of changing lanes on gravity is large), and there will be no disconnection under gravity. In addition, the third pipe section 1103 is parallel to the bottom of the pool, and impurities will not be blocked at the water distribution branch pipe 18, resulting in a break due to excessive self-weight; the water distribution mixer 6 is used to stabilize the water pressure and ensure the stability of the water flow and uniform mixing. The water distribution main pipe 11 is used for the sewage to enter the treatment system evenly and stably. The water distribution branch pipe 18 is used to evenly distribute the branch water flow and ensure uniform distribution of the water flow. The supporting and fixing embedded parts 13 are used to connect the structure of the building, support and fix the water distribution pipes, and prevent the water distribution pipes from being displaced or damaged due to external pressure or vibration. The water distribution support adopts an angle steel with a U-shaped plastic-coated pipe clamp 17, which is used to bear weight, prevent deformation, and constrain the pipe. The branch pipe water distribution cap 12 is used to evenly distribute the water flow of the water distribution main pipe 11 to the water distribution branch pipe 18, and the branch pipe water distribution cap 12 can be removed during maintenance and cleaning to improve the convenience and efficiency of cleaning the water distribution branch pipe 18.

[0053] As a preferred embodiment, the bottom of the water distribution branch pipe 18 has a hole 15 inclined downward at 30-65 degrees, the hole 15 has a diameter of 18-22 mm, the holes 15 are arranged in a staggered manner, and the service area of ​​a single hole is ≤1.5m 2 More preferably, the bottom of the water distribution branch pipe 18 has a hole 15 inclined downward at 45°, the hole 15 has a diameter of 20 mm, the holes 15 are staggered, and the service area of ​​a single hole is ≤1.5m 2The aperture specifications and arrangement further improve the uniformity of water distribution and achieve water distribution without dead corners.

[0054] As a preferred embodiment, the number of water outlets 1 is ≥ 2, and the number of the sewage distribution devices is set in coordination with the number of the water outlets 1. The number of water outlets 1 and the number of sewage distribution devices can be specifically adjusted according to the size of the reaction tank 7, all within the protection scope of this application.

[0055] As a preferred embodiment, the fluid mixing assembly 5 is detachable, and the unit blade 503 is composed of two semicircular metal plates, which are folded at 35-75 degrees (such as Figure 4 The two members are alternately overlapped and connected to the shaft rod 501 at an angle a, preferably 45°; the connection method includes welding.

[0056] The unit blades 503 of this structure can separate and cut the sewage entering the water distributor 6 more fully, and mix it more fully and evenly.

[0057] Furthermore, a smooth layer is provided on the arc side of the unit blade 503. The material of the smooth layer is the same as that of the unit blade 503, and the outer end surface of the shaft plate 502 is made of carbon steel lined with plastic or rubber. The provision of the smooth layer can reduce separation resistance, promote the flow of liquid, and also prevent sewage impurities from being retained on the surface of the blade unit.

[0058] As a preferred embodiment, both ends of the water distributor and mixer 6 are sealed with flanges; the shaft plate 502 and one end of the water distributor and mixer 6 (such as Figure 4 As shown, it is connected to the right end of the water distributor mixer 6) and is located outside the end, and its diameter is consistent with the diameter of the sealing flanges at both ends of the water distributor mixer 6; in this way, when installing, the fluid mixing component 5 is pushed into the cylinder of the water distributor mixer 6, and the flange and gasket are used to fix the shaft plate 502 and the sealed mixer cylinder (the specific flange sealing process is well known in the art, a flange is fixed to the port at one end of the water distributor mixer 6, the shaft plate 502 is extended out of the port at one end of the water distributor mixer 6 and fits the flange, the gasket and the other flange are fit to the shaft plate 502 in turn, and the flange is fixed with screws and nuts). The flanges at both ends can be disassembled during maintenance, and the fluid mixing component 5 can be pulled out for replacement or repair, which can extend the service life of the equipment.

[0059] As a preferred embodiment, the water distributor 6 is provided with an anti-corrosion layer inside; the thickness of the anti-corrosion layer is ≥280 μm; the anti-corrosion layer is an epoxy coal tar paint anti-corrosion layer. This can extend the adaptability life of the equipment. A channel steel is provided at the bottom of the water distributor 6 to support the water distributor 6.

[0060] As a preferred embodiment, the water distribution main pipe 11 is supported by angle steel with U-shaped plastic-coated pipe clamp 17, which is used to bear weight, prevent deformation, and constrain the pipeline.

[0061] As a preferred implementation, the water distribution main pipe 11 and the water distribution branch pipe 18 are both 304 stainless steel pipes.

[0062] As a preferred embodiment, the opening 15 of the branch pipe water diversion buoy 12 is a hole 15 made by a saddle hole cutting machine, which makes the connection between the branch pipe water diversion buoy 12 and the water distribution branch pipe 18 more firmly.

[0063] As a preferred embodiment, water holes are evenly and spaced apart at the bottom of the third pipe section 1103 of the water distribution main pipe 11, and the water holes are also connected to the open end of the branch pipe water distribution buoy 12 extending vertically downward, and the other end of the branch pipe water distribution buoy 12 is connected to the supporting fixed embedded part 13;

[0064] The side of the branch pipe water distribution vent 12 is provided with openings 15, which are connected to the water distribution branch pipes 18. The water distribution branch pipes 18 are connected into one body through the branch pipe water distribution vent 12 to evenly distribute the branch pipe water flow, so that the water distribution is more sufficient and rapid.

[0065] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0066] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A pressure flow annular water distribution device, characterized in that: include: A water distribution mixer and a sewage uniform distribution device; the sewage uniform distribution device comprises a water distribution main pipe, a water distribution branch pipe, and a branch pipe water distribution head; The top of the water distributor mixer is provided with a water outlet, a raw water inlet, and a circulating water inlet; The water distribution main pipe includes a second pipe section close to the inner wall of the reaction tank, a first pipe section parallel to the bottom of the reaction tank, and a third pipe section; the first pipe section, the second pipe section, and the third pipe section are connected end to end in sequence through a pipe reducer; the water outlet is connected to the other end of the first pipe section; the other end of the third pipe section is connected to the open end of a branch pipe water distribution cap extending vertically downward through a pipe reducer, and the other end of the branch pipe water distribution cap is connected to the upper part of the supporting fixed embedded part; The side of the branch pipe water distribution vent is provided with connection holes around it, and the connection holes are connected to the water distribution branch pipes. The various water distribution branch pipes are connected into one body through the branch pipe water distribution vent to evenly distribute the branch pipe water flow; the water distribution branch pipes are arranged in a ring shape below the water distribution main pipe; the bottom of the water distribution branch pipe is evenly spaced and provided with a plurality of openings; A fluid mixing component is arranged inside the water distribution mixer; the fluid mixing component includes a shaft, a plurality of unit blades, and an axis plate; one side of the axis plate is connected to the end of the shaft, and the other side is connected to one end of the water distribution mixer; the unit blades are evenly spaced on the outer wall of the shaft.

2. The pressure flow annular water distribution device according to claim 1, characterized in that: The openings at the bottom of the water distribution branch pipe are inclined downward at 30-65 degrees, with a hole diameter of 18-22 mm. The openings are arranged in a staggered manner, and the service area of ​​a single hole is ≤1.5m 2 .

3. The pressure flow annular water distribution device according to claim 1, characterized in that: The number of the water outlets is ≥2, and the number of the sewage distribution devices is set in coordination with the number of the water outlets.

4. The pressure flow annular water distribution device according to claim 1, characterized in that: The fluid mixing component is detachable; the unit blades are composed of two semicircular metal plates, which are folded at an angle of 35-75 degrees and alternately overlapped and connected to the shaft; the connection method includes welding.

5. The pressure flow annular water distribution device according to claim 1, characterized in that: The arc side surface of the unit blade is provided with a smooth layer.

6. The pressure flow annular water distribution device according to claim 1, characterized in that: The bottom of the third pipe section of the water distribution main pipe is evenly and spaced apart with water holes; the water holes are connected to the open ends of the branch pipe water distribution caps extending vertically downward, and the other ends of the branch pipe water distribution caps are connected to the supporting fixed embedded parts; The side surfaces of the branch pipe water distribution cap are provided with openings around them, and the openings are connected to the water distribution branch pipes, and the various water distribution branch pipes are connected into one body through the branch pipe water distribution cap.

7. The pressure flow annular water distribution device according to claim 1, characterized in that: An anti-corrosion layer is arranged inside the water distribution mixer; the thickness of the anti-corrosion layer is ≥280 μm; and the anti-corrosion layer includes an epoxy coal tar paint anti-corrosion layer.

8. The pressure flow annular water distribution device according to claim 1, characterized in that: The water distribution main pipe support adopts angle steel including U-shaped plastic-coated pipe clamp.

9. The pressure flow annular water distribution device according to claim 1, characterized in that: The water distribution main pipe and the water distribution branch pipe are both made of stainless steel; the water distribution mixer is made of carbon steel.

10. The pressure flow annular water distribution device according to claim 1, characterized in that: The opening of the branch pipe water distribution head is a hole opened by a saddle hole cutting machine.

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