An equal resistance anti-clogging anaerobic pool water distribution device

Abstract

The present invention discloses an equal resistance anti-clogging anaerobic tank water distribution device, which belongs to the technical field of sewage treatment, and comprises a water inlet pipe and a water storage chamber in a closed form connected to the water inlet pipe, a blind plate is arranged on one side of the water storage chamber, a plurality of pipe holes are opened on the bottom plate of the water storage chamber, a plurality of distribution pipes are arranged in the water storage chamber, a check valve is installed at the water inlet end of each distribution pipe, and the water outlet end of each distribution pipe is connected to the pipe hole corresponding to the position of the water outlet end, and each distribution pipe is also connected to a negative pressure dredging pipe extending out of the water storage chamber. The water distribution device of the present invention can realize equal resistance uniform water distribution in the anaerobic tank, and at the same time, if a local water distribution point is blocked, targeted dredging is performed without affecting the normal operation of the anaerobic tank, and can ensure uniform water distribution at each water distribution point. The purpose of not draining the anaerobic tank and dredging the pipeline can be achieved without affecting the normal operation of the anaerobic tank, and the risk of entering the anaerobic tank for maintenance is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment. Background Art

[0002] Most traditional anaerobic tanks for wastewater treatment use bottom water distribution, but the water distribution device has the following technical problems: First, the resistance between each water distribution point is quite different, resulting in uneven water discharge at each water distribution point, which leads to insufficient contact between the anaerobic microorganisms and wastewater at the bottom of the anaerobic tank, resulting in dead zones; Second, it is difficult for traditional water distributors to achieve fixed-point dredging of each water distribution point. Once the water distribution point is blocked, it is necessary to drain the sewage in the anaerobic tank and transfer the bacteria at the bottom. The maintenance work is quite cumbersome and may affect the normal production of the sewage treatment plant. At the same time, there are great personal safety hazards when entering the anaerobic tank for maintenance. When the water distribution point is blocked, the efficiency of the anaerobic tank will decrease, the anaerobic bacteria will die and be lost due to lack of nutrition, the treatment efficiency of the anaerobic tank will decrease, and it may eventually cause the anaerobic system to fail to operate normally. Summary of the invention

[0003] The invention aims to provide an anaerobic pool water distribution device with equal resistance and anti-clogging.

[0004] Based on the above purpose, the present invention adopts the following technical solutions:

[0005] A water distribution device for an anaerobic pool with equal resistance and anti-clogging comprises a water inlet pipe and a closed water storage chamber connected to the water inlet pipe, a blind plate is arranged on one side of the water storage chamber, a plurality of pipe holes are opened on the bottom plate of the water storage chamber, a plurality of distribution pipes are arranged in the water storage chamber, a check valve is installed at the water inlet end of each distribution pipe, a water outlet end of each distribution pipe is connected to the pipe hole corresponding to the position of the water outlet end, and each distribution pipe is also connected to a negative pressure dredging pipe extending out of the water storage chamber.

[0006] The water outlet ends of several distribution pipes are arranged at equal intervals along the length direction of the water storage cavity and are welded to the pipe holes corresponding to the positions of the water outlet ends. The outer side of each pipe hole is connected with a short water distribution pipe.

[0007] The water inlet end of each distribution pipe is connected with a threaded joint, and the blind plate and the water inlet end of each distribution pipe are both located on the left side of the water storage cavity.

[0008] The plurality of distribution pipes are divided into an upper group of pipes and a lower group of pipes located below the upper group of pipes. The upper group of pipes and the lower group of pipes respectively include three distribution pipes arranged in parallel.

[0009] The three distribution pipes of the upper group of pipes are arranged on the right side of the water storage chamber, and the three distribution pipes of the lower group of pipes are arranged on the left side of the water storage chamber.

[0010] A water inlet control valve is installed on the water inlet pipe, a negative pressure control valve is installed on the negative pressure dredging pipe, and the negative pressure control valve is located outside the water storage chamber.

[0011] A nut matching the water distribution short pipe is welded at each pipe hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The water distribution device of the present invention can achieve uniform water distribution with equal resistance in the anaerobic tank. At the same time, if a local water distribution point is blocked, targeted dredging can be performed without affecting the normal operation of the anaerobic tank, thereby ensuring uniform water distribution at each water distribution point. The anaerobic tank is not drained, and the purpose of dredging the pipeline can also be achieved without affecting the normal operation of the anaerobic tank, thereby avoiding the risk of entering the anaerobic tank for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 for Figure 1 Left view of;

[0016] Figure 3 for Figure 1 A partial enlarged view of the middle A part;

[0017] Figure 4 It is a partial schematic diagram of the upper group of pipes;

[0018] Figure 5 It is a partial schematic diagram of the lower group of pipes;

[0019] Among them: 1. Water inlet pipe; 2. Water inlet control valve; 3. Fastening bolts; 4. Blind plate; 5. Threaded joint; 6. Check valve; 7. Distribution pipe; 8. Water distribution short pipe; 9. Negative pressure dredging pipe; 10. Negative pressure control valve; 11. Nut; 12. Water storage chamber; 36. Flange. DETAILED DESCRIPTION

[0020] A water distribution device for an anaerobic pool with equal resistance and anti-clogging function, such as Figure 1-5As shown, it includes a water inlet pipe 1 and a closed water storage chamber 12 connected to the water inlet pipe 1, a water inlet control valve 2 is installed on the water inlet pipe 1, a blind plate 4 is arranged on one side of the water storage chamber 12, and 6 pipe holes are opened on the bottom plate of the water storage chamber 12. Six distribution pipes 7 are arranged in the water storage chamber 12, and the 6 distribution pipes 7 are divided into an upper group pipe and a lower group pipe located below the upper group pipe. The upper group pipe and the lower group pipe respectively include 3 parallel distribution pipes 7. In the upper group pipe, the length of the distribution pipe 7 located in the middle and the distribution pipes 7 on the right and left sides of the distribution pipe 7 are arranged from short to long, and the three distribution pipes 7 of the upper group pipe are arranged on the right side of the water storage chamber 12. In the lower group pipe, the length of the distribution pipe 7 located in the middle and the distribution pipes 7 on the right and left sides of the distribution pipe 7 are arranged from short to long, and the three distribution pipes 7 of the lower group pipe are arranged on the left side of the water storage chamber 12. The water inlet end of each distribution pipe 7 is connected with a threaded joint 5 and a check valve 6, the blind plate 4 and the water inlet end of each distribution pipe 7 are located on the left side of the water storage chamber 12, the water outlet end of each distribution pipe 7 is arranged at equal intervals along the length direction of the water storage chamber 12 and welded to the pipe hole corresponding to the position of the water outlet end, and the outer side of each pipe hole is connected with a nut 11 welded to match the water distribution short pipe 8, and the nut 11 is connected to the water distribution short pipe 8. Each distribution pipe 7 is also connected with a negative pressure dredging pipe 9 extending out of the water storage chamber 12, and a negative pressure control valve 10 is installed on the negative pressure dredging pipe 9, and the negative pressure control valve 10 is located outside the water storage chamber 12, and a sewage valve is arranged at the bottom of the water storage chamber 12.

[0021] Production: A stainless steel plate with a width of 250mm and a thickness of 3.5~4.5mm is used as the bottom plate of the water storage chamber 12. Holes with a diameter of 15mm~25mm are opened at equal distances (spacing of 1.5 meters or other, etc.) on the bottom plate. The 6 DN40 stainless steel equal-resistance distribution pipes 7 that have been fixed and arranged in advance are led to the corresponding bottom plate pipe holes in turn. 90° stainless steel elbows are installed at the bends. The outlet end of the distribution pipe 7 is fully welded and sealed with the bottom plate. Nuts 11 with M15~M25 internal threads that match the water distribution short pipe 8 with external threads on the upper end are welded at the outer pipe holes of the bottom plate. The dredging threaded joints 5 on the 6 equal-resistance distribution pipes 7 are made in turn from the water inlet end, the check valves 6 on the distribution pipes 7 are installed, the negative pressure dredging pipes 9 are welded, and the negative pressure control valve 10 of the negative pressure dredging pipes 9 is installed.

[0022] Another 3.5~4.5mm thick stainless steel plate is folded into a U-shaped cover plate. The U-shaped structure is 250mm wide and 250mm high, and the length is the same as the bottom plate. It is buckled on the 6 equal resistance distribution pipes 7 and the bottom plate welded components. Finally, the joint between the bottom plate and the cover plate is fully welded and sealed. The end of the cover plate is welded and sealed with a steel plate. A non-standard flange 36 with a full weld thickness of about 8mm is matched with the flange 36 reserved on the wall of the anaerobic tank.

[0023] The prepared water distribution device is installed in the anaerobic tank, fixed with a steel bracket, and the height is fixed. The water distribution short pipe 8 at the bottom is about 200mm away from the bottom of the anaerobic tank. The combination method of the water distribution device and the pool wall: the pool wall reserves a matching single flange 36 and the flange 36 on the device is sealed and connected with a nut 11.

[0024] Working process:

[0025] 1. Resistance and uniform water distribution

[0026] Open the water inlet control valve 2 on the water inlet pipe 1, and the wastewater enters the isobaric water storage chamber 12 through the water inlet pipe 1. After the water in the water storage chamber 12 is filled with water and reaches the opening pressure of the check valve 6 of the distribution pipe 7, the wastewater enters the distribution pipe 7. After the distribution pipe 7 is filled with water, the pressure of the water storage chamber 12 and the outlet pipe of the distribution pipe 7 are basically the same. The sewage in the water storage chamber 12 is evenly distributed to the six water distribution short pipes 8 through the distribution pipe 7, thereby achieving the effect of equal resistance and uniform water distribution at multiple water distribution points.

[0027] 2. Anti-blocking

[0028] Positive pressure dredging: Close the water inlet control valve 2 on the water inlet pipe 1, remove the fastening bolts 3 on the blind plate 4, and open the blind plate 4. Drain the residual sewage in the water storage chamber 12. Due to the pressure generated by the water level in the anaerobic tank, the check valves 6 on the distribution pipe 7 are all in a closed state, and the sewage in the anaerobic tank will not flow back into the water storage chamber 12. Use a high-pressure water (P≥3bar) pipe and the threaded joint 5 at the water inlet end of the distribution pipe 7 to connect them in sequence, and dredge the distribution pipes 7 one by one.

[0029] Negative pressure dredging: If high pressure dredging is not possible, negative pressure dredging is used. Close the water inlet control valve 2, open the valve on the negative pressure dredging pipe 9, connect the negative pressure vacuum pump for dredging, and after dredging, open the drain valve at the bottom of the water storage chamber 12 to remove the debris.

[0030] The water distribution device of the present invention can achieve uniform water distribution with equal resistance in the anaerobic tank. At the same time, if a local water distribution point is blocked, targeted dredging can be performed without affecting the normal operation of the anaerobic tank, thereby ensuring uniform water distribution at each water distribution point. The anaerobic tank is not drained, and the purpose of dredging the pipeline can also be achieved without affecting the normal operation of the anaerobic tank, thereby avoiding the risk of entering the anaerobic tank for maintenance.

Claims

1. An equal resistance anti-clogging anaerobic pool water distribution device, characterized in that: It comprises a water inlet pipe and a closed water storage chamber connected with the water inlet pipe, a flange is arranged on the water storage chamber, the flange matches with the flange reserved on the wall of the anaerobic tank, a blind plate is arranged on one side of the water storage chamber, a plurality of pipe holes are opened on the bottom plate of the water storage chamber, a plurality of distribution pipes are arranged in the water storage chamber, a check valve is installed on the water inlet end of each distribution pipe, a water outlet end of each distribution pipe is connected with the pipe hole corresponding to the position of the water outlet end, and a negative pressure dredging pipe extending out of the water storage chamber is also connected to each distribution pipe; the water outlet ends of the plurality of distribution pipes are arranged at equal intervals along the length direction of the water storage chamber and welded to the pipe hole corresponding to the position of the water outlet end, and a water distribution short pipe is connected to the outside of each pipe hole; the water inlet end of each distribution pipe is connected with a threaded joint, and the blind plate and the water inlet end of each distribution pipe are both located on the left side of the water storage chamber; the negative pressure dredging pipe, the blind plate and the threaded joint are all arranged on the left side of the flange, and the pipe hole is arranged on the right side of the flange.

2. The equal resistance anti-clogging anaerobic pool water distribution device according to claim 1, characterized in that: The plurality of distribution pipes are divided into an upper group of pipes and a lower group of pipes located below the upper group of pipes. The upper group of pipes and the lower group of pipes respectively include three distribution pipes arranged in parallel.

3. The equal resistance anti-clogging anaerobic pool water distribution device according to claim 2, characterized in that: The three distribution pipes of the upper group of pipes are arranged on the right side of the water storage chamber, and the three distribution pipes of the lower group of pipes are arranged on the left side of the water storage chamber.

4. The equal resistance anti-clogging anaerobic pool water distribution device according to claim 3, characterized in that: A water inlet control valve is installed on the water inlet pipe, a negative pressure control valve is installed on the negative pressure dredging pipe, and the negative pressure control valve is located outside the water storage chamber.

5. The equal resistance anti-clogging anaerobic pool water distribution device according to claim 4, characterized in that: A nut matching the water distribution short pipe is welded at each pipe hole.

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