Sewage treatment plant pipeline monitoring and pneumatic dredging device

Abstract

The utility model discloses a sewage treatment plant pipeline monitoring and pneumatic desilting device which comprises a desilting device body, the desilting device body is provided with a sewage pipeline connector, an external air source connector, a PLC control system, a pneumatic desilting assembly and a pressure relay, and the sewage pipeline connector is provided with an electric valve. The external gas source interface is respectively connected with a plant station aeration fan and the PLC control system, the PLC control system is connected with the pneumatic desilting assembly and the pressure relay, the pneumatic desilting assembly comprises a desilting assembly valve and a valve actuator, the desilting assembly valve comprises a valve core and a valve seat, and the flow of an external gas medium is controlled by adjusting the sectional area between the valve core and the valve seat. The pressure relay is provided with a pressure monitoring assembly, and the pressure monitoring assembly monitors pipeline air pressure in real time and feeds back the pipeline air pressure to the PLC control system through the pressure relay. A pneumatic mode is adopted, an air source can be externally connected to an existing aeration fan in a sewage plant nearby, investment cost is saved, and the sludge yield can be effectively reduced in the desilting process.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline desilting, in particular to a pipeline monitoring and pneumatic desilting device for a sewage treatment plant. Background Art

[0002] Currently, domestic sewage treatment plants primarily rely on biological treatment methods, with activated sludge treatment being the most widely used technology for municipal wastewater treatment. Depending on the process design and operating conditions, this involves both sludge and mixed liquor return, particularly when the sedimentation tank discharge pipes contain high solids (primary sedimentation tank sludge has a moisture content of 95-97% and secondary sedimentation tank sludge has a moisture content of 98-99%).

[0003] Increased sludge solids content increases friction between sludge particles and flocs. Friction between the pipe wall and sludge particles also increases significantly, reducing sludge turbulence and impairing fluidity. Maintaining flow requires greater applied pressure, increasing conveying power consumption and overloading equipment. This increases the risk of pipeline blockage after prolonged operation or shutdowns.

[0004] Existing methods for pipeline desilting mainly include: (1) cleaning the inner wall of the pipeline with a pressurized water source; (2) cleaning with robots or small equipment; and (3) manual desilting using some simple tools. However, in addition to the need to consider the collection and treatment of mud and water mixtures, these methods cannot achieve daily continuous monitoring and cleaning, and the pipeline maintenance cost is high. This utility model proposes a sewage treatment plant pipeline monitoring and pneumatic desilting device to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a sewage treatment plant pipeline monitoring and pneumatic silt removal device in view of the shortcomings of the above-mentioned existing pipeline silt removal methods.

[0006] The specific technical solutions adopted in this utility model are as follows:

[0007] A sewage treatment plant pipeline monitoring and pneumatic dredging device is provided, which includes a dredging device body, the dredging device body is equipped with a sewage pipe interface, an external air source interface, a PLC control system, a pneumatic dredging component and a pressure relay, the sewage pipe interface is installed with an electric valve, the external air source interface is connected to the PLC control system, the PLC control system is connected to the pneumatic dredging component and the pressure relay, the pneumatic dredging component includes a dredging component valve and a valve actuator, the dredging component valve includes a valve core and a valve seat, and the pressure relay is equipped with a pressure monitoring component.

[0008] Preferably, the sewage pipe interface is connected to a water pump.

[0009] Preferably, the PLC control system is equipped with a communication function and a control box manual control panel.

[0010] Preferably, the pressure relay converts the pressure value into an electrical signal.

[0011] Preferably, the external air source interface is connected to the aeration fan in the sewage treatment plant, the external air source interface is equipped with an external air source valve, the external air source valve is installed with a flange, and the flange is equipped with a rubber asbestos gasket of corresponding size.

[0012] Preferably, the pressure monitoring component monitors the pipeline pressure value P and the pressure relay action value P1 in real time.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model adopts a pneumatic mode, and the air source can be connected to the existing aeration fan in the sewage treatment plant nearby, which saves investment costs and does not produce mud-water mixture and other by-products during the dredging process.

[0015] 2. The feedback execution system of the present invention can realize online monitoring and automatically perform dredging actions, which can effectively save manpower.

[0016] 3. The utility model adopts air source desilting, which can effectively reduce the amount of sludge generated by pressure water source desilting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the utility model;

[0018] The accompanying drawings in the figure are marked as: dredging device main body 1, sewage pipe interface 2, external air source interface 3, PLC control system 4, pneumatic dredging component 5, pressure relay 6, electric valve 7, dredging component valve 8, valve actuator 9, valve core 10, valve seat 11, pressure monitoring component 12, water pump 13, external air source valve 14, flange 15, rubber asbestos gasket 16. DETAILED DESCRIPTION

[0019] Example 1

[0020] Reference Figure 1, is a structural schematic diagram of Example 1 of the present utility model: a sewage treatment plant pipeline monitoring and pneumatic silting device, including a silting device body 1, the silting device body 1 is equipped with a sewage pipe interface 2, an external air source interface 3, a PLC control system 4, a pneumatic silting component 5 and a pressure relay 6, the sewage pipe interface 2 is installed with an electric valve 7 and connected to a water pump 13, the external air source interface 3 is connected to the aeration fan in the sewage plant area, and the external air source interface 3 is equipped with an external air source valve 14, and the gas is transmitted to the sewage pipe by controlling the external air source valve 14. The external air source valve 14 is installed with a flange 15, and the flange 15 is equipped with a rubber asbestos gasket 16 of corresponding size to prevent gas leakage. The external air source interface 3 is connected to the PLC control system 4, and the PLC control system 4 is connected to the pneumatic silting component 5 and the pressure relay 6, and is equipped with a communication function and a control box manual control panel for controlling the electric valve 7, the pneumatic silting component 5 and the pressure relay 6 to execute instructions. The pneumatic desilting assembly 5 includes a desilting assembly valve 8 and a valve actuator 9. The desilting assembly valve 8 includes a valve core 10 and a valve seat 11. The flow rate of the external gas medium is controlled by adjusting the cross-sectional area between the valve core 10 and the valve seat 11. The pressure relay 6 is equipped with a pressure monitoring assembly 12. The pressure monitoring assembly 12 monitors the pipeline pressure value P in real time. The pressure relay 6 activates the value P1. When P>P1, it indicates that the pipeline is clogged. The pressure relay 6 converts the pressure value into an electrical signal and transmits it to the PLC control system 4, which issues a desilting action command.

[0021] During use, the pressure monitoring assembly 12 can monitor the pipeline pressure in real time and feed it back to the PLC control system 4 through the pressure relay 6. The action value P1 of the pressure relay 6 is set to reflect the pipeline flow rate. When clogging occurs in the pipeline, the pressure monitoring assembly 12 monitors the pipeline pressure P>P1, the pressure relay 6 converts the pressure value into an electrical signal and feeds it back to the PLC control system 4. The PLC control system 4 shuts down the water pump 13, and the valve actuator 9 of the pneumatic dredging assembly 5 closes, forming a semi-enclosed space with one side open in the pipeline. The external air source valve 14 opens, and the PLC control system 4 adjusts the cross-sectional area between the valve core 10 and the valve seat 11 according to the P value to control the air flow rate. Positive pressure is generated in the pipeline to purge impurities such as residual sludge on the pipe wall. The purge continues until the pressure P monitored by the pressure monitoring assembly 12 is less than P1. The clogging in the pipeline is then relieved, and the PLC control system 4 controls the dredging assembly valve 8 and valve actuator 9 to execute a closing command, close the electric valve 7, and start the water pump 13 and other medium transmission power equipment to restore to their original operating state. The medium transmission in the pipeline returns to normal, and the pressure relay 6 resumes pressure monitoring.

[0022] The above-described embodiment is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Persons skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any technical solution obtained by equivalent substitution or equivalent transformation falls within the scope of protection of the present invention.

Claims

1. A sewage treatment plant pipeline monitoring and pneumatic dredging device, comprising: The dredging device body (1) is characterized in that the dredging device body (1) is equipped with a sewage pipe interface (2), an external air source interface (3), a PLC control system (4), a pneumatic dredging component (5) and a pressure relay (6); the sewage pipe interface (2) is installed with an electric valve (7); the external air source interface (3) is connected to the PLC control system (4); the PLC control system (4) is connected to the pneumatic dredging component (5) and the pressure relay (6); the pneumatic dredging component (5) includes a dredging component valve (8) and a valve actuator (9); the dredging component valve (8) includes a valve core (10) and a valve seat (11); and the pressure relay (6) is equipped with a pressure monitoring component (12).

2. A sewage treatment plant pipeline monitoring and pneumatic dredging device according to claim 1, characterized in that: The sewage pipe interface (2) is connected to the water pump (13).

3. A sewage treatment plant pipeline monitoring and pneumatic dredging device according to claim 1, characterized in that: The PLC control system (4) is equipped with a communication function and a control box manual control panel.

4. A sewage treatment plant pipeline monitoring and pneumatic dredging device according to claim 1, characterized in that: The pressure relay (6) converts the pressure value into an electrical signal.

5. A sewage treatment plant pipeline monitoring and pneumatic dredging device according to claim 1, characterized in that: The external air source interface (3) is connected to an aeration fan in the sewage treatment plant. The external air source interface (3) is equipped with an external air source valve (14). The external air source valve (14) is installed with a flange (15). The flange (15) is equipped with a rubber asbestos gasket (16) of corresponding size.

6. A sewage treatment plant pipeline monitoring and pneumatic dredging device according to claim 1, characterized in that: The pressure monitoring component (12) monitors the pipeline pressure value P in real time, and the pressure relay (6) operates at the value P1.

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