Anti-blocking device for inclined plate sedimentation tank of sewage

Abstract

The utility model discloses a kind of sewage inclined plate sedimentation tank anti-blocking devices, including, cladding shell, sewage inclined plate sedimentation structure is installed on the cladding shell;The utility model relates to the technical field of sewage treatment equipment, while realizing efficient anti-blocking, continuous operation, the frequency of manual cleaning and operation and maintenance cost are greatly reduced, effectively improve sewage treatment efficiency and effluent quality, provide reliable technical support for long-term stable operation of inclined plate sedimentation tank, with significant economic benefits and environmental benefits.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, specifically to an anti-clogging device for a sewage inclined plate sedimentation tank. Background Technology

[0002] Traditional inclined plate sedimentation tanks for wastewater treatment have four major drawbacks: First, dense sludge layers easily accumulate on and inside the inclined plates, leading to a reduced flow cross-section, decreased treatment efficiency, frequent manual cleaning, high maintenance costs, and impact on continuous treatment capacity. Second, conventional inclined plates lack flow guiding structures, resulting in turbulent wastewater flow, insufficient flocculation, and difficulty in effective sedimentation or sliding to the sludge discharge zone. Fine flocs are easily discharged with the clean water, affecting effluent quality. Third, air flushing anti-clogging systems often use single-point jetting or non-directional airflow, resulting in uneven sludge removal and the creation of blind spots. Gas pipelines are susceptible to backflow contamination from sewage, leading to valve failure or pipeline corrosion. Fourth, the structural design of the sludge collection tank and the clear water release pipe lacks synergistic optimization. During sludge discharge, the settled flocs are easily disturbed, causing secondary turbidity. Meanwhile, the inlet filter of the clear water pipe is prone to clogging and requires frequent replacement, affecting the stability of the system. This patent effectively solves the above problems by innovatively designing spiral guide ribs, elastic buffer layers, one-way check valves, and graded filter components, combined with a dual mechanism of pneumatic sludge removal and gravity sedimentation. In view of this, in-depth research was conducted on the above problems, resulting in this case. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a sewage inclined plate sedimentation tank anti-clogging device, comprising: a casing, on which a sewage inclined plate sedimentation structure is installed; the sewage inclined plate sedimentation structure includes: an inlet connecting pipe installed on the casing; a clear water release pipe installed on the casing; a gas connecting pipe installed on the casing via a bracket; an electromagnetic regulating valve installed on the gas connecting pipe; the electromagnetic regulating valve connected to a gas tank connecting pipe; a sludge discharge pipe installed on the casing; a sludge collection groove opened inside the casing; several inclined sedimentation pipes installed inside the casing; high-pressure anti-blockage components installed on the inclined sedimentation pipes; and the inclined sedimentation pipes connected to the gas connecting pipe.

[0004] Preferably, the high-pressure anti-blocking component includes a plurality of attached gas collecting pipes, which are respectively installed inside the encapsulated housing. The attached gas collecting pipes are connected to the inclined sedimentation pipes. A sludge interception frame is provided inside the encapsulated housing and is connected to the inclined sedimentation pipes. A plurality of gas nozzles are inserted into the inclined sedimentation pipes and are connected to the attached gas collecting pipes. Preferably, the inner wall of the inclined sedimentation pipe is provided with a spiral guiding ridge. The spiral guiding ridge extends along the axial direction of the pipe and is integrally formed with the inner wall of the pipe. The spiral guiding ridge is used to guide the sewage to form a spiral flow path in the pipe, thereby enhancing the flocculation and sedimentation effect. Preferably, the bottom of the sludge interception frame is provided with an elastic buffer layer, which is made of a high-molecular composite material. The elastic buffer layer forms a flexible contact surface with the end of the inclined sedimentation pipe to reduce the impact damage when the sludge slides down. Preferably, a one-way check valve is added between the gas connection pipe and the electromagnetic regulating valve. The opening direction of the one-way check valve is consistent with the gas flow direction. The one-way check valve is used to prevent sewage from backflowing into the gas pipeline system. Preferably, an adjustable pore size filter assembly is provided at the inlet of the water release pipe. The filter assembly is detachably connected to the pipe body via a threaded connection structure. The pore density of the filter assembly gradually increases from the inlet to the outlet of the pipe body, forming a graded filtration structure.

[0005] Beneficial effects This utility model provides an anti-clogging device for inclined plate sedimentation tanks in wastewater. It offers the following advantages compared to existing technologies: The device employs spiral guide ridges to guide wastewater into a spiral flow path, significantly enhancing flocculation and sedimentation effects and reducing the discharge of fine flocs with the clean water; the elastic buffer layer and the end of the inclined sedimentation pipe form a flexible contact surface, reducing impact damage from sludge sliding and extending equipment lifespan; the addition of a one-way check valve effectively prevents wastewater backflow into the gas pipeline system, avoiding valve failure and pipeline corrosion, and improving system reliability; the graded filter assembly in the clean water release pipe achieves graded filtration through adjustable apertures, reducing filter clogging frequency and ensuring stable effluent quality. Combining the dual mechanisms of pneumatic sludge removal and gravity sedimentation, this device achieves efficient anti-clogging and continuous operation while significantly reducing manual cleaning frequency and maintenance costs, effectively improving wastewater treatment efficiency and effluent quality. It provides reliable technical support for the long-term stable operation of inclined plate sedimentation tanks, demonstrating significant economic and environmental benefits. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the front sectional view of the anti-clogging device for a sewage inclined plate sedimentation tank according to the present invention.

[0007] Figure 2 for Figure 1 A magnified view of the letter "A" in the diagram.

[0008] In the diagram: 1. Encased shell; 2. Water inlet connection pipe; 3. Clean water release pipe; 4. Gas connection pipe; 5. Electromagnetic regulating valve; 6. Gas tank connection pipe; 7. Sludge discharge pipe; 8. Sludge collection trough; 9. Inclined sedimentation pipe; 10. Attached gas collection pipe; 11. Gas nozzle; 12. Sludge interception frame. Detailed Implementation

[0009] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0010] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further. Example

[0011] Please see Figure 1-2 Traditional inclined plate sedimentation tanks for wastewater often face the following technical bottlenecks during operation: The problem of easy clogging is prominent: the surface and interior of the inclined plate are prone to the accumulation of flocculent sediments, forming a dense sludge layer, which leads to a reduction in the water flow cross-section and a sharp drop in treatment efficiency. Frequent shutdowns for manual cleaning are required, which increases operation and maintenance costs and affects continuous treatment capacity. Limited sedimentation effect: Conventional inclined plate design lacks a flow guiding structure, the sewage flow path is disordered, the flocculation reaction is insufficient, the flocs are difficult to effectively settle or slide to the sludge discharge area, and some fine flocs are discharged with the clear water, affecting the quality of the effluent. Defects of air flushing anti-clogging: Existing air flushing systems mostly use single-point injection or non-directional airflow, which makes it difficult to evenly cover the entire inclined plate, easily creating blind spots for sludge removal, and the gas pipeline is easily contaminated by sewage backflow, leading to valve failure or pipeline corrosion. The contradiction between sludge discharge and clear water separation: The structural design of the sludge collection tank and the clear water release pipe lacks synergistic optimization. During sludge discharge, the settled flocs are easily disturbed, leading to secondary turbidity. Meanwhile, the filter screen at the inlet of the clear water pipe is easily clogged and needs to be replaced frequently, affecting the stability of the system.

[0012] This patent addresses the aforementioned issues by innovatively designing a spiral guide ridge on the inner wall of the inclined sedimentation pipe, an elastic buffer layer for the sludge interception frame, a one-way check valve for the gas pipeline, and a graded filter assembly for the clear water pipe. By combining the dual mechanisms of pneumatic sludge removal and gravity sedimentation, it achieves efficient anti-clogging, continuous operation, and improved effluent quality in the inclined plate sedimentation tank, effectively solving the core pain points of frequent clogging, high maintenance costs, and low treatment efficiency in traditional technologies. Therefore, this application protects a sewage inclined plate sedimentation tank anti-clogging device. A sewage pipe is connected to an inlet pipe 2. Sewage flows into a covered shell 1 through the inlet pipe 2. A dosing port is provided at the top of the covered shell 1. After adding flocculant, the sewage and flocculant undergo a flocculation reaction in the tank. The resulting flocculent precipitate gradually settles in multiple inclined inclined plate sedimentation pipes 9. Under gravity, most of the flocculent material eventually slides down to the sludge interception frame 12. As subsequent flocculent material continues to settle, the bottom flocculent material is gradually squeezed into the sludge collection trough 8, while clean water flows upward and is discharged through the gaps between the inclined plates. When the sludge collection trough 8 is full of sludge, it is discharged through the sludge discharge pipe 7, and the system immediately returns to its initial state and continues. To prevent clogging of the inclined plates, the equipment is designed with an air-pump anti-clogging function. During operation, the high-pressure air tank is connected to the air tank connecting pipe 6, and the air intake is controlled by the electromagnetic regulating air valve 5 to make the air evenly fill the multiple attached air collection pipes 10. Then, the high-pressure air is injected at high speed into the inclined sedimentation pipes 9 through multiple gas nozzles 11, impacting the residual sludge attached to the inclined sedimentation pipes 9, causing it to fall off and slide into the sludge collection trough 8, and finally be discharged with the sludge discharge pipe. This design, through the dual action of gravity sedimentation and pneumatic sludge removal, not only ensures the effective treatment of sewage, but also realizes the regular cleaning and maintenance of the inclined plates. The entire process adopts automated cyclic operation, which not only improves the treatment efficiency, but also reduces the frequency of manual cleaning, effectively solving the problem of easy clogging in traditional inclined plate sedimentation tanks.

[0013] In summary, after wastewater enters the encased shell 1 through the inlet pipe 2, the top dosing system automatically injects flocculant. The wastewater and flocculant react fully through agitation or gravity mixing to generate flocculent precipitates. The spiral guide ridges on the inner wall of the inclined sedimentation pipe 9 guide the wastewater to form a spiral flow path, extending the hydraulic residence time and enhancing the flocculation effect, promoting floc deposition on the inner wall of the pipe. The deposited flocs slide down the pipe under gravity to the sludge interception frame 12. The bottom elastic buffer layer, made of high-molecular composite material, absorbs the impact of sludge and reduces equipment wear, while preventing the settled flocs from being resuspended due to impact. After continuous accumulation, the sludge is squeezed into the sludge collection tank 8. When the sludge concentration in the tank reaches a preset threshold (monitored by a level sensor or pressure sensor), the electromagnetic regulating valve 5 automatically opens. High-pressure gas enters the gas connection pipe 4 through the gas tank connection pipe 6. A one-way check valve prevents sewage backflow. The gas is distributed to each gas nozzle 11 through the attached gas collection pipe 10, forming a high-speed airflow that impacts the residual sludge attached to the inner wall of the inclined sedimentation pipe 9, causing it to detach and be discharged with the sludge discharge pipe. Clean water rises through the gaps between the inclined plates and passes through the graded filter assembly (the filter pore density increases from the inlet to the outlet) at the inlet of the clean water release pipe 3 to achieve multi-stage filtration, reducing the escape of fine flocs. The entire system uses a PLC control unit to realize the sequential linkage of chemical dosing, sludge discharge, and air flushing. Combined with online monitoring equipment such as flow meters and turbidity meters, it forms a closed-loop control, ensuring both efficient sedimentation and anti-clogging self-cleaning. Compared to traditional inclined plate sedimentation tanks, this device enhances sedimentation efficiency through spiral flow guidance, extends equipment lifespan through elastic buffering, ensures system safety through one-way check flow, and improves effluent quality through staged filtration. Combined with a timed / on-demand triggering mechanism for pneumatic sludge removal, it achieves a significant breakthrough in treatment efficiency, a substantial reduction in manual cleaning frequency, and stable effluent turbidity compliance, resulting in significant economic and environmental benefits.

[0014] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing clogging in a wastewater inclined plate sedimentation tank, comprising a casing, wherein a wastewater inclined plate sedimentation structure is installed on the casing, characterized in that, The wastewater inclined plate sedimentation structure includes an inlet connecting pipe installed on the encasing shell, a clear water release pipe installed on the encasing shell, a gas connecting pipe installed on the encasing shell via a bracket, an electromagnetic regulating gas valve installed on the gas connecting pipe and connected to a gas tank connecting pipe, a sludge discharge pipe installed on the encasing shell, a sludge collection groove opened inside the encasing shell, several inclined sedimentation pipes installed inside the encasing shell, high-pressure anti-blocking components installed on the inclined sedimentation pipes, and the inclined sedimentation pipes connected to the gas connecting pipe.

2. The anti-clogging device for a wastewater inclined plate sedimentation tank according to claim 1, characterized in that, The high-pressure anti-blocking component includes several attached gas collecting pipes, which are respectively installed inside the encapsulated housing. The attached gas collecting pipes are connected to the inclined sedimentation pipes. A sludge interception frame is provided inside the encapsulated housing and is connected to the inclined sedimentation pipes. Several gas nozzles are inserted into the inclined sedimentation pipes and are connected to the attached gas collecting pipes.

3. The anti-clogging device for a wastewater inclined plate sedimentation tank according to claim 2, characterized in that, The inner wall of the inclined sedimentation pipe is provided with a spiral guiding ridge. The spiral guiding ridge extends along the axial direction of the pipe and is integrally formed with the inner wall of the pipe. The spiral guiding ridge is used to guide the sewage to form a spiral flow path in the pipe, thereby enhancing the flocculation and sedimentation effect.

4. The anti-clogging device for a wastewater inclined plate sedimentation tank according to claim 3, characterized in that, The bottom of the sludge interception frame is provided with an elastic buffer layer, which is made of high polymer composite material. The elastic buffer layer forms a flexible contact surface with the end of the inclined sedimentation pipe to reduce the impact damage when the sludge slides down.

5. The anti-clogging device for a wastewater inclined plate sedimentation tank according to claim 4, characterized in that, A one-way check valve is added between the gas connection pipe and the electromagnetic regulating valve. The opening direction of the one-way check valve is consistent with the gas flow direction. The one-way check valve is used to prevent sewage from backflowing into the gas pipeline system.

6. The anti-clogging device for a wastewater inclined plate sedimentation tank according to claim 5, characterized in that, An adjustable-pore-diameter filter assembly is installed at the inlet of the water release pipe. The filter assembly is detachably connected to the pipe via a threaded connection structure. The pore density of the filter assembly gradually increases from the inlet to the outlet of the pipe, forming a graded filtration structure.

Images