Water distribution device of anaerobic reactor

Abstract

The utility model provides an anaerobic reactor water distribution device which comprises a first flow channel layer, a second flow channel layer, a water inlet channel and an internal circulation backflow pipeline, the first flow channel layer and the second flow channel layer are isolated through a middle plate, the top of the internal circulation backflow pipeline is provided with an internal circulation backflow port, and the bottom of the internal circulation backflow pipeline is communicated with the first flow channel layer. The bottom of the water inlet channel is communicated with the second flow channel layer; a trumpet-shaped water outlet pipe is arranged below the internal circulation backflow pipeline, and a reflection cone plate is fixedly arranged in the first flow channel layer; the water inlet is connected with a water inlet nozzle through a water inlet pipe; a plurality of water flow channels are arranged in the two flow channel layers, a closed area is arranged between every two adjacent water flow channels, the water flow channels of the two flow channel layers are arranged in an up-down staggered mode, the water flow channels are in a vortex shape, and water flows out of the water flow channels to form rotational flow. According to the device, water distribution is more uniform, flowing dead zones are reduced, on-way resistance loss of water distribution can be reduced, water flow at the water outlet forms rotational flow, and sludge at the bottom is not easy to deposit.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a water distribution device for an anaerobic reactor. Background Art

[0002] Anaerobic biological treatment technology is a sewage treatment method in which organic matter in sewage is decomposed, metabolized and digested by anaerobic bacteria under anaerobic conditions, which greatly reduces the organic matter content in sewage and produces biogas. As a high-efficiency and low-energy sewage treatment process, anaerobic treatment is widely used in the treatment of high-concentration organic sewage and high-suspended solids sewage in food, fermentation, alcohol, chemical, pharmaceutical, and aquaculture.

[0003] In an anaerobic treatment device, a water distributor is a key component, which can not only distribute water, but also has a stirring function. Common anaerobic water distributors include point-type water distributors, branch-type water distributors, and spiral-type water distributors. However, single-point water distribution can only distribute water evenly within a small range, and short-flow and deviation flow phenomena often occur. Branch-type water distribution has the problem of uneven water distribution, dead zones at the bottom of the reactor, and uneven mixing of sludge and wastewater. The spiral water distributor is composed of multiple fan blades. The structure of this water distributor has many dead angles. Therefore, after long-term operation, sludge accumulation causes the water distribution holes to be blocked, and the water distribution resistance is large. Based on this, the utility model provides an anaerobic reactor water distribution device to solve the above problems. Summary of the invention

[0004] The utility model provides a high-efficiency anaerobic reactor water distribution device to solve the technical problems that the existing water distributor has a large number of flow dead zones, is easy to accumulate mud and has large flow channel resistance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a water distribution device for an anaerobic reactor, comprising a first flow channel layer, a second flow channel layer, a water inlet channel and an internal circulation return pipe; a plurality of water flow channels are respectively arranged in the first flow channel layer and the second flow channel layer; an internal circulation return port is arranged at the top of the internal circulation return pipe, and the bottom is communicated with the first flow channel layer; a water inlet is arranged at the top of the water inlet channel, and the bottom is communicated with the second flow channel layer.

[0007] Furthermore, the first flow channel layer and the second flow channel layer are integrated into one, and the first flow channel layer is distributed below the second flow channel layer, and the first flow channel layer and the second flow channel layer are isolated by an intermediate plate.

[0008] Furthermore, a trumpet-shaped water outlet pipe is arranged below the inner circulation return pipe; a through hole adapted to the water outlet size of the trumpet-shaped water outlet pipe is arranged on the middle plate, the trumpet-shaped water outlet pipe is fixed above the middle plate, the outer edge of the trumpet mouth of the trumpet-shaped water outlet pipe is fixedly connected to the middle plate, and the return water of the inner circulation return pipe enters the first flow channel layer through the through hole.

[0009] Furthermore, a reflective cone plate is arranged in the first flow channel layer; the reflective cone plate is fixed above the bottom plate of the first flow channel layer.

[0010] Furthermore, the trumpet-shaped water outlet pipe is fixed at the center of the middle plate, and the reflective cone plate is fixed at the center of the bottom plate.

[0011] Furthermore, the water inlet channel is fixedly installed above the second flow channel layer, and the water inlet channel is sleeved on the inner circulation return pipe and fixedly connected to the outer wall of the inner circulation return pipe, and the water inlet channel coincides with the central axis of the inner circulation return pipe; the outer shell of the water inlet channel is fixedly connected to the upper plate of the second flow channel layer.

[0012] Furthermore, a plurality of groups of water inlets are fixedly arranged on the water inlet channel, and the water inlets are connected to water inlet nozzles via water inlet pipes, and the water inlet nozzles are distributed inside the water inlet channel.

[0013] Furthermore, the water inlets are evenly distributed along the circumferential direction on the outer shell of the water inlet channel; and the spray angle of the water inlet nozzle is 45°.

[0014] Furthermore, a plurality of water flow channels are arranged inside the first flow channel layer and the second flow channel layer, the number of the water flow channels is determined by the water distribution volume and the service area, and a closed area is arranged between two adjacent water flow channels, that is, the water flow channels and the closed area are spaced apart.

[0015] Furthermore, the water flow channels of the first flow channel layer and the water flow channels of the second flow channel layer are arranged alternately up and down; the water flow channels of the first flow channel layer and the second flow channel layer are vortex-shaped, so that water flowing out of the water flow channels forms a vortex.

[0016] The beneficial effects of the present invention are:

[0017] (1) The high-efficiency anaerobic reactor water distribution device of the utility model is provided with upper and lower independent water distribution channels. The upper channel is connected to the anaerobic reactor water inlet, and the anaerobic water flows out in a spiral in the upper channel. The lower channel is connected to the internal circulation pipeline, and the circulating water flows out in a spiral in the lower channel and intersects with the upper channel, which can dilute the anaerobic water inlet and make the mixing more uniform.

[0018] (2) In the present invention, by providing a reflective cone plate and a trumpet-shaped water outlet pipe, water distribution can be made more uniform and dead zones can be reduced;

[0019] (3) In the utility model, both the upper and lower flow channels are arranged in a vortex shape, and the flow channel cross-section is relatively large, which reduces the resistance loss along the water distribution and makes the water flow at the outlet form a vortex, making it difficult for the sludge at the bottom to settle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the water distribution device of the anaerobic reactor of the utility model;

[0021] Figure 2 for Figure 1 sectional view of

[0022] Figure 3 is a schematic diagram of the first flow channel layer;

[0023] Figure 4 is a schematic diagram of the second flow channel layer;

[0024] The reference numerals in the accompanying drawings are:

[0025] 1. Internal circulation return port; 2. Water inlet; 3. First flow channel layer; 4. Second flow channel layer; 5. Trumpet-shaped water outlet pipe; 6. Reflection cone plate; 7. Water inlet nozzle; 8. Enclosed area; 9. Bottom plate; 10. Middle plate; 11. Upper plate; 12. Outer shell; 13. Internal circulation return pipe; 14. Water inlet channel. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in combination with the embodiment of the utility model and the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] Reference Figures 1-2 The embodiment of the utility model provides a water distribution device for an anaerobic reactor, comprising a first flow channel layer 3, a second flow channel layer 4, a water inlet channel 14 and an internal circulation return pipe 13; a plurality of water flow channels are respectively arranged in the first flow channel layer 3 and the second flow channel layer 4; an internal circulation return port 1 is arranged at the top of the internal circulation return pipe 13, and the bottom is connected with the first flow channel layer 3; a water inlet 2 is arranged at the top of the water inlet channel 14, and the bottom is connected with the second flow channel layer 4.

[0029] In this embodiment, the first flow channel layer 3 and the second flow channel layer 4 are integrated into one, and the first flow channel layer 3 is distributed below the second flow channel layer 4 , and the first flow channel layer 3 and the second flow channel layer 4 are isolated by an intermediate plate 10 .

[0030] When in use, the internal reflow water of the anaerobic reactor enters the internal circulation reflow pipe 13 through the internal circulation reflow port 1, then enters the first flow channel layer 3 and is discharged through the water flow channel. The inlet water of the anaerobic reactor enters the water inlet channel 14 through the water inlet port 2, then enters the second flow channel layer 4 and is discharged through the water flow channel.

[0031] Example 2

[0032] The main structure of this embodiment is the same as that of embodiment 1, except that:

[0033] In this embodiment, a trumpet-shaped water outlet pipe 5 and a reflective cone plate 6 are also provided.

[0034] Specifically, refer to Figures 2 to 4 In this embodiment, the trumpet-shaped water outlet pipe 5 is fixedly connected to the bottom of the inner circulation return pipe 13, and the angle of the bell mouth 4 is preferably 25° to 45°. The middle plate 10 is provided with a through hole adapted to the water outlet size of the trumpet-shaped water outlet pipe 5, and the trumpet-shaped water outlet pipe 5 is welded and fixed to the center of the upper surface of the middle plate 10, and the outer edge of the bell mouth of the trumpet-shaped water outlet pipe 5 is fixedly connected to the middle plate 10, and the return water of the inner circulation return pipe 13 enters the first flow channel layer 3 through the through hole.

[0035] In this embodiment, the reflective cone plate 6 is arranged in the first flow channel layer 3, and the reflective cone plate 6 is welded and fixed to the center position of the upper surface of the bottom plate 9 of the first flow channel layer 3, and the inclined angle of the reflective cone plate 6 is preferably 25° to 45°. The arrangement of the reflective cone plate 6 can reduce the impact of the water flow on the bottom plate 9 and reduce the flow dead zone.

[0036] Example 3

[0037] The main structure of this embodiment is the same as that of Embodiment 2, except that the structure of the water inlet channel 14 is limited in this embodiment.

[0038] Specifically, refer to Figures 2 to 4 In this embodiment, the water inlet channel 14 is fixedly installed above the second flow channel layer 4, and the water inlet channel 14 is sleeved on the inner circulation return pipe 13 and fixedly connected to the outer wall of the inner circulation return pipe 13. The water inlet channel 14 coincides with the central axis of the inner circulation return pipe 13, and the outer shell 12 of the water inlet channel 14 is welded and fixedly connected to the upper plate 11 of the second flow channel layer 4.

[0039] In this embodiment, three groups of water inlets 2 are fixedly arranged on the water inlet channel 14, and a water inlet pipe (90° elbow) is welded at the water inlet 2. A water inlet nozzle 7 is fixedly installed at the end of the water inlet pipe, and the water inlet nozzle 7 is distributed inside the water inlet channel 14. Among them, the water inlet 2 is evenly distributed along the circumferential direction on the shell 12 of the water inlet channel 14, and the injection angle of the water inlet nozzle 7 is 45°, so that the incoming water can be injected into the second flow channel layer 4 by swirl flow. The nozzle diameter is determined according to the size of the water distribution surface, the amount of water distribution and the nozzle flow rate.

[0040] Example 4

[0041] The main structure of this embodiment is the same as that of Embodiment 3, except that: the interior of the first flow channel layer 3 and the second flow channel layer 4 are described in this embodiment.

[0042] Specifically, refer to Figures 3-4 In this embodiment, six groups of water flow channels are respectively arranged inside the first flow channel layer 3 and the second flow channel layer 4, and a closed area 8 is arranged between two adjacent water flow channels, that is, the water flow channels and the closed area 8 are arranged alternately. The water flow channels of the first flow channel layer 3 and the water flow channels of the second flow channel layer 4 are arranged vertically and alternately; the water flow channels are vortex-shaped, so that the water outflowing from the water flow channels forms a vortex.

[0043] Example 5

[0044] This embodiment provides an application method of the anaerobic reactor water distribution device described in Embodiment 4, specifically:

[0045] The internal recirculation water of a certain anaerobic reactor enters the first flow channel layer 3 through the internal circulation recirculation port 1, is guided by the trumpet-shaped outlet pipe 5, and reaches the first flow channel layer 3 evenly. There is a reflective cone plate 6 at the bottom of the first flow channel layer 3, which can reduce the impact of water flow on the bottom plate 9 and reduce the flow dead zone, so that the internal recirculation water evenly enters the 6 vortex water flow channels and finally flows out tangentially from the outlet to form a vortex.

[0046] The inlet water of a certain anaerobic reactor flows in through the water inlet 2 of the water inlet channel 14, flows out from the water inlet nozzle 7, and enters the second flow channel layer 4. There are three water inlet components, which enter the second flow channel layer 4 tangentially to make the water distribution more uniform, and then reach the bottom of the second flow channel layer 4. At the same time, the setting of the trumpet-shaped outlet pipe 5 can guide the water flow of the second flow channel layer 4, reduce the flow dead zone, and make the inlet water evenly enter the 6 vortex-shaped water flow channels, and finally flow out tangentially from the outlet to form a vortex. The water flow channel of the first flow channel layer 3 and the water flow channel of the second flow channel layer 4 are staggered up and down, and the two inlet waters of the upper and lower layers evenly stir the fluid at the bottom of the anaerobic reactor, making it difficult for sludge to settle.

[0047] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. An anaerobic reactor water distribution device, characterized in that: It comprises a first flow channel layer (3), a second flow channel layer (4), a water inlet channel (14) and an internal circulation return pipe (13); The first flow channel layer (3) and the second flow channel layer (4) are respectively provided with a plurality of groups of water flow channels; The top of the internal circulation reflux pipe (13) is provided with an internal circulation reflux port (1), and the bottom is connected with the first flow channel layer (3); The water inlet channel (14) is provided with a water inlet (2) at the top, and is connected to the second flow channel layer (4) at the bottom.

2. The anaerobic reactor water distribution device according to claim 1, characterized in that: The first flow channel layer (3) and the second flow channel layer (4) are integrated into one, and the first flow channel layer (3) is distributed below the second flow channel layer (4), and the first flow channel layer (3) and the second flow channel layer (4) are isolated by an intermediate plate (10).

3. The anaerobic reactor water distribution device according to claim 2, characterized in that: A trumpet-shaped water outlet pipe (5) is provided below the inner circulation return pipe (13); The middle plate (10) is provided with a through hole that matches the size of the water outlet of the trumpet-shaped water outlet pipe (5); the trumpet-shaped water outlet pipe (5) is fixed above the middle plate (10); the outer edge of the trumpet mouth of the trumpet-shaped water outlet pipe (5) is fixedly connected to the middle plate (10); and the return water of the internal circulation return pipe (13) enters the first flow channel layer (3) through the through hole.

4. The anaerobic reactor water distribution device according to claim 3, characterized in that: A reflective cone plate (6) is arranged in the first flow channel layer (3); The reflective cone plate (6) is fixed above the bottom plate (9) of the first flow channel layer (3).

5. The anaerobic reactor water distribution device according to claim 4, characterized in that: The trumpet-shaped water outlet pipe (5) is fixed at the center position of the middle plate (10), and the reflective cone plate (6) is fixed at the center position of the bottom plate (9).

6. The anaerobic reactor water distribution device according to claim 2, characterized in that: The water inlet channel (14) is fixedly installed above the second flow channel layer (4), and the water inlet channel (14) is sleeved on the inner circulation return pipe (13) and fixedly connected to the outer wall of the inner circulation return pipe (13), and the central axis of the water inlet channel (14) coincides with the central axis of the inner circulation return pipe (13); The outer shell (12) of the water inlet channel (14) is fixedly connected to the upper plate (11) of the second flow channel layer (4).

7. The anaerobic reactor water distribution device according to claim 6, characterized in that: A plurality of groups of water inlets (2) are fixedly arranged on the water inlet channel (14); the water inlets (2) are connected to water inlet nozzles (7) via water inlet pipes; and the water inlet nozzles (7) are distributed inside the water inlet channel (14).

8. The anaerobic reactor water distribution device according to claim 7, characterized in that: The water inlets (2) are evenly distributed along the circumferential direction on the outer shell (12) of the water inlet channel (14); The spray angle of the water inlet nozzle (7) is 45°.

9. The anaerobic reactor water distribution device according to claim 1, characterized in that: A plurality of groups of water flow channels are arranged inside the first flow channel layer (3) and the second flow channel layer (4), and a closed area (8) is arranged between two adjacent water flow channels.

10. The anaerobic reactor water distribution device according to claim 9, characterized in that: The water flow channels of the first flow channel layer (3) and the water flow channels of the second flow channel layer (4) are arranged vertically and alternately; The water flow channel is in a vortex shape.

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