Automatic normal pressure water-air mixed flushing system for sludge pump

Abstract

The utility model discloses a sludge pump automatic normal pressure water gas mixed flushing system relates to sludge treatment technical field, and this system includes sludge pump body, and sludge pump body input end is linked with the bottom of sedimentation tank through the sludge pipeline, and sludge pump body output end is connected sludge pipeline, and sludge pipeline sludge mouth position is equipped with sludge valve, and sludge valve is connected with linkage control unit electrically, sludge pipeline is connected normal pressure waterway unit and normal pressure gas path unit on the sludge pipeline, and normal pressure waterway unit is the normal pressure water source that provides sludge pump body flushing. The utility model discloses through time relay cumulative sludge pump's operation time, and automatic trigger flush process, and strictly take the idle state of sludge pump as the starting premise, avoided the conflict of flushing and sludge pump operation, and the safety and automation degree of operation have been improved greatly, this design does not need manual attendance, and the human cost is reduced significantly and the work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically an automatic atmospheric pressure water-air mixing flushing system for sludge pumps. Background Technology

[0002] In the field of sludge treatment, sludge pumps are key equipment widely used in wastewater treatment scenarios to transport high-viscosity sludge. However, during long-term operation, sludge easily adheres to the pump chamber and the inner walls of the pipeline, leading to a significant reduction in transport efficiency and potentially causing equipment damage, affecting the stable operation of the entire wastewater treatment system. Therefore, regular flushing and maintenance of sludge pumps is particularly important.

[0003] Most existing systems rely on manual judgment of when to flush, and cannot automatically trigger the flushing process based on the actual running time and working status of the sludge pump. This operating method not only increases labor costs, but may also lead to untimely or excessive flushing due to human negligence, affecting equipment lifespan and processing efficiency.

[0004] Based on this, an automatic atmospheric pressure water-air mixing flushing system for sludge pumps is now provided, which can eliminate the drawbacks of existing systems. Utility Model Content

[0005] The purpose of this invention is to provide an automatic atmospheric pressure water-air mixing flushing system for sludge pumps to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automatic atmospheric pressure water-air mixing flushing system for a sludge pump includes a sludge pump body. The input end of the sludge pump body is connected to the bottom of a sedimentation tank via a sludge pumping pipe. The output end of the sludge pump body is connected to a sludge discharge pipe. A sludge discharge valve is installed at the sludge discharge port of the sludge discharge pipe, and the sludge discharge valve is electrically connected to a linkage control unit. An atmospheric pressure water circuit unit and an atmospheric pressure air circuit unit are connected to the sludge pumping pipe. The atmospheric pressure water circuit unit provides an atmospheric pressure water source for flushing the sludge pump body, and the atmospheric pressure air circuit unit provides an atmospheric pressure air source for flushing the sludge pump body. The sludge pump body and the sludge discharge pipe are electrically connected to a monitoring unit, which is used to monitor and collect the operating status of the sludge pump body. The monitoring unit is also electrically connected to the linkage control unit, which is used to control the flushing of the sludge pump body.

[0007] Preferably, the atmospheric pressure water circuit unit includes a tap water connection pipe, the inlet end of which is connected to the main tap water pipeline, and the outlet end of which is connected to the sludge pumping pipeline. A water circuit filter, a water circuit solenoid valve, a water circuit check valve, and a manual shut-off valve are installed sequentially on the tap water connection pipe from the inlet end to the outlet end. The water circuit solenoid valve is connected to the linkage control unit.

[0008] Preferably, the atmospheric pressure air circuit unit includes a compressed air connection pipe, the air inlet end of which is connected to a compressed air branch pipe, and the air outlet end of which is connected to a sludge pumping pipe. A manual shut-off valve, an air circuit pressure reducing valve, an air circuit solenoid valve, and a gas flow meter are sequentially installed on the compressed air connection pipe from the air inlet end to the air outlet end. The gas flow meter and the air circuit solenoid valve are connected to the linkage control unit.

[0009] Preferably, the monitoring unit includes an outlet remote pressure gauge and a sludge pump operating status sensor. The outlet remote pressure gauge is installed at the sludge discharge end of the sludge discharge pipe. The sludge pump operating status sensor is a current transformer. The sludge pump operating status sensor is connected in series with the motor control circuit of the sludge pump body. The outlet remote pressure gauge and the sludge pump operating status sensor are electrically connected to the linkage control unit.

[0010] Preferably, the linkage control unit includes a time relay, which is electrically connected to a PLC controller. The PLC controller is electrically connected to a water solenoid valve, a gas flow meter, a gas solenoid valve, an outlet remote pressure gauge, and a sludge pump operating status sensor. The PLC controller is connected to an operating terminal, which is equipped with an alarm module.

[0011] Preferably, the alarm module includes an audible and visual alarm and a fault indicator light, wherein the audible and visual alarm is electrically connected to the fault indicator light, and the fault indicator light is electrically connected to the operating terminal.

[0012] Preferably, the sludge discharge pipe is connected to a wastewater pipe, and a flushing and drain valve is installed on the wastewater pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a time relay to accumulate the running time of the sludge pump and automatically triggers the flushing process. At the same time, it strictly takes the idle state of the sludge pump as the premise for starting, avoiding the conflict between flushing and sludge pump operation, and greatly improving the safety and automation of operation. This design does not require manual operation, significantly reducing labor costs and improving work efficiency.

[0014] 2. This utility model system is directly connected to the factory's tap water pipeline and compressed air system, eliminating the need for additional equipment such as water storage tanks and special air pumps, thereby reducing equipment costs and installation space requirements. This feature makes the system particularly suitable for small and medium-sized sewage treatment plants and industrial enterprises, and it is effectively adapted to the existing infrastructure of the factory.

[0015] 3. This utility model system incorporates the signal from the outlet remote pressure gauge, which can initiate flushing in advance or extend the flushing time when the sludge pump outlet pressure is abnormal. This pressure interlock control mechanism is more in line with the actual blockage of the pump body than the single time triggering method, making the flushing process more targeted and effective.

[0016] 4. During the rinsing process, the system simultaneously opens the rinsing drain valve to quickly discharge the rinsed wastewater, avoiding the problem of wastewater flowing back into the pump chamber. This design effectively maintains the cleanliness and efficient operation of the sludge pump, extends the service life of the equipment, and improves the processing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure Labels and Annotations: 1. Sludge Pump Body; 11. Sludge Pumping Pipe; 12. Sludge Discharge Pipe; 121. Sludge Discharge Valve; 13. Wastewater Pipe; 2. Atmospheric Pressure Water Circuit Unit; 21. Tap Water Connection Pipe; 22. Water Circuit Filter; 23. Water Circuit Solenoid Valve; 24. Water Circuit Check Valve; 3. Atmospheric Pressure Air Circuit Unit; 31. Compressed Air Connection Pipe; 32. Gas Flow Meter; 33. Air Circuit Solenoid Valve; 34. Air Circuit Pressure Reducing Valve; 4. Linkage Control Unit; 41. Time Relay; 42. PLC Controller; 43. Operation Terminal; 44. Alarm Module; 441. Audible and Visual Alarm; 442. Fault Indicator Light; 5. Monitoring Unit; 51. Outlet Remote Pressure Gauge; 52. Sludge Pump Operating Status Sensor; 61. Manual Shut-off Valve I; 62. Manual Shut-off Valve II; 7. Flushing and Drainage Valve. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] In one embodiment, such as Figure 1As shown, an automatic atmospheric pressure water-air mixing flushing system for a sludge pump includes a sludge pump body 1. The input end of the sludge pump body 1 is connected to the bottom of a sedimentation tank via a sludge pumping pipe 11. The output end of the sludge pump body 1 is connected to a sludge discharge pipe 12. A sludge discharge valve 121 is installed at the sludge discharge port of the sludge discharge pipe 12, and the sludge discharge valve 121 is electrically connected to a linkage control unit 4. An atmospheric pressure water circuit unit 2 and an atmospheric pressure air circuit unit 3 are connected to the sludge pumping pipe 11. The atmospheric pressure water circuit unit 2 provides an atmospheric pressure water source for flushing the sludge pump body 1, and the atmospheric pressure air circuit unit 3 provides an atmospheric pressure air source for flushing the sludge pump body 1. The sludge pump body 1 and the sludge discharge pipe 12 are electrically connected to a monitoring unit 5, which is used to monitor and collect the operating status of the sludge pump body 1. The monitoring unit 5 is also electrically connected to the linkage control unit 4, which is used to control the flushing of the sludge pump body 1.

[0021] In this embodiment, the atmospheric pressure water circuit unit 2 draws water from the plant's tap water pipeline, filters it, and then transports it to the inlet of the sludge pump body 1 through the sludge pumping pipeline 11; the atmospheric pressure air circuit unit 3 draws air from the compressed air system, reduces pressure, filters it, and then simultaneously transports it to the inlet of the sludge pump body 1 through the sludge pumping pipeline 11, forming a water-air mixed flushing flow. The monitoring unit 5 collects the operating status (current signal) and outlet pressure of the sludge pump body 1 in real time, and the linkage control unit 4 judges the flushing conditions according to preset logic, automatically opening or closing the water circuit and air circuit solenoid valves to complete the flushing process.

[0022] In an optional embodiment, the atmospheric pressure water circuit unit 2 includes a tap water connection pipe 21, the inlet end of which is connected to the tap water main pipeline, and the outlet end of which is connected to the sludge pumping pipe 11. A water circuit filter 22, a water circuit solenoid valve 23, a water circuit check valve 24, and a manual shut-off valve 61 are installed sequentially on the tap water connection pipe 21 from the inlet end to the outlet end. The water circuit solenoid valve 23 is connected to the linkage control unit 4.

[0023] It should be noted that the water filter 22 is a Y-type filter with a filtration accuracy of 100μm, which removes impurities from tap water to prevent pipe blockage; the water solenoid valve 23 has a working pressure of 0.1-0.6MPa, which is suitable for the normal pressure range of tap water; the water check valve 24 prevents sludge from flowing back and contaminating the tap water pipes; and the manual shut-off valve 61 is convenient for closing the normal pressure water circuit unit 2 during maintenance.

[0024] In an optional embodiment, the atmospheric pressure air circuit unit 3 includes a compressed air connection pipe 31. The air inlet end of the compressed air connection pipe 31 is connected to a compressed air branch pipe, and the air outlet end of the compressed air connection pipe 31 is connected to the sludge pumping pipe 11. A manual shut-off valve 62, an air circuit pressure reducing valve 34, an air circuit solenoid valve 33, and a gas flow meter 32 are installed sequentially on the compressed air connection pipe 31 from the air inlet end to the air outlet end. The gas flow meter 32 and the air circuit solenoid valve 33 are connected to the linkage control unit 4.

[0025] It should be noted that the air pressure reducing valve 34 stabilizes the compressed air pressure in the plant area within the normal pressure range of 0.2-0.3MPa, which is suitable for flushing requirements; the gas flow meter 32 monitors the air flow in real time and feeds it back to the PLC controller; the air solenoid valve 33 and the water solenoid valve 23 are of the same model to ensure synchronous operation.

[0026] In an optional embodiment, the monitoring unit 5 includes an outlet remote pressure gauge 51 and a sludge pump operating status sensor 52. The outlet remote pressure gauge 51 is installed at the sludge discharge end of the sludge discharge pipe 12. The sludge pump operating status sensor 52 is a current transformer. The sludge pump operating status sensor 52 is connected in series with the motor control circuit of the sludge pump body 1. The outlet remote pressure gauge 51 and the sludge pump operating status sensor 52 are electrically connected to the linkage control unit 4.

[0027] It should be noted that the outlet remote pressure gauge 51 is an electric contact pressure gauge with a range of 0-1MPa and a set pressure threshold. When the outlet pressure of the sludge pump is abnormal, it sends a signal to the linkage control unit 4. The sludge pump body 1 operating status sensor 52 is a current transformer connected in series in the sludge pump motor control circuit. It determines whether the sludge pump is in the running (current present) or idle (no current present) state by detecting the motor current, thus providing the prerequisite for flushing start-up.

[0028] In an optional embodiment, the linkage control unit 4 includes a time relay 41, which is electrically connected to a PLC controller 42. The PLC controller 42 is electrically connected to a water solenoid valve 23, a gas flow meter 32, a gas solenoid valve 33, an outlet remote pressure gauge 51, and a sludge pump operating status sensor 52. The PLC controller 42 is connected to an operation terminal 43, which is equipped with an alarm module 44.

[0029] It should be noted that the time relay 41 can be set with a flushing trigger duration (such as 8 hours, 12 hours, etc.) via the operation terminal 43, and the sludge pump running time is accumulated in real time and transmitted to the PLC controller 42; the PLC controller 42 processes various signals and outputs control commands; the operation terminal 43 supports setting parameters such as running time threshold, fixed flushing time (such as 15s, 30s, etc.), and pressure alarm threshold, and displays information such as equipment running status, accumulated time, and number of flushes.

[0030] In an optional embodiment, the alarm module 44 includes an audible and visual alarm 441 and a fault indicator light 442, wherein the audible and visual alarm 441 is electrically connected to the fault indicator light 442, and the fault indicator light 442 is electrically connected to the operation terminal 43.

[0031] It should be noted that the audible and visual alarm 441 of the alarm module 44 will issue an audible and visual alarm when there is an abnormal flushing (such as a solenoid valve failure or insufficient air flow) or when the sludge pump outlet pressure exceeds the standard; the fault indicator light 442 corresponds to different fault types (water circuit failure, air circuit failure, and pressure abnormality) to facilitate quick troubleshooting.

[0032] In an optional embodiment, the sludge discharge pipe 12 is connected to a wastewater pipe 13, and a flushing and drain valve 7 is installed on the wastewater pipe 13.

[0033] It should be noted that the flushing drain valve 7 opens simultaneously during flushing to quickly discharge the flushed wastewater and prevent wastewater from flowing back into the pump chamber.

[0034] The above embodiment discloses an automatic atmospheric pressure water-air mixing flushing system for sludge pumps. The time relay 41 can be set to flushing trigger duration (e.g., 8 hours, 12 hours, etc.) via the operation terminal 43, accumulating the sludge pump's running time in real time and transmitting it to the PLC controller 42. The PLC controller 42 processes various signals from the monitoring unit 5 (outlet remote pressure gauge 51 and sludge pump running status sensor 52), gas flow meter 32, etc., and determines flushing conditions based on preset logic. When flushing conditions are met, the sludge discharge valve (121) is automatically closed, and the water circuit solenoid valve 23 and the air circuit solenoid valve 33 are automatically opened, allowing atmospheric pressure water and air to be transported to the inlet end of the sludge pump body 1 through the sludge pumping pipe 11 for flushing. During flushing, the flushing drain valve 7 is opened simultaneously to quickly discharge the flushed wastewater, preventing wastewater from flowing back into the pump chamber. When the set rinsing time (such as 15s, 30s, etc.) is reached or the rinsing conditions are not met, the water circuit solenoid valve 23 and the air circuit solenoid valve 33 are automatically closed to complete the rinsing process.

[0035] When flushing is abnormal (such as solenoid valve failure or insufficient air flow) or the sludge pump outlet pressure exceeds the standard, the audible and visual alarm 441 will issue an audible and visual alarm; the fault indicator light 442 corresponds to different fault types (water circuit fault, air circuit fault, pressure abnormality) to facilitate quick troubleshooting.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automatic atmospheric pressure water-air mixing flushing system for sludge pumps, characterized in that, The system includes a sludge pump body (1), the input end of which is connected to the bottom of the sedimentation tank via a sludge pumping pipe (11), and the output end of which is connected to a sludge discharge pipe (12). A sludge discharge valve (121) is installed at the sludge discharge port of the sludge discharge pipe (12), and the sludge discharge valve (121) is electrically connected to a linkage control unit (4). An atmospheric pressure water circuit unit (2) and an atmospheric pressure air circuit unit (3) are connected to the sludge pumping pipe (11). (2) Provide atmospheric pressure water source for flushing sludge pump body (1), and atmospheric pressure air circuit unit (3) provides atmospheric pressure air source for flushing sludge pump body (1). The sludge pump body (1) and sludge discharge pipe (12) are electrically connected to monitoring unit (5). The monitoring unit (5) is used to monitor and collect the operating status of sludge pump body (1). The monitoring unit (5) is electrically connected to linkage control unit (4). The linkage control unit (4) is used to control the flushing of sludge pump body (1).

2. The automatic atmospheric pressure water-air mixing flushing system for a sludge pump according to claim 1, characterized in that, The atmospheric pressure water circuit unit (2) includes a tap water connection pipe (21). The inlet end of the tap water connection pipe (21) is connected to the tap water main pipeline, and the outlet end of the tap water connection pipe (21) is connected to the sludge pumping pipe (11). A water circuit filter (22), a water circuit solenoid valve (23), a water circuit check valve (24), and a manual shut-off valve (61) are installed on the tap water connection pipe (21) from the inlet end to the outlet end in sequence. The water circuit solenoid valve (23) is connected to the linkage control unit (4).

3. The automatic atmospheric pressure water-air mixing flushing system for sludge pumps according to claim 1, characterized in that, The atmospheric pressure air circuit unit (3) includes a compressed air connection pipe (31). The air inlet end of the compressed air connection pipe (31) is connected to a compressed air branch pipe, and the air outlet end of the compressed air connection pipe (31) is connected to a mud pumping pipe (11). The compressed air connection pipe (31) is equipped with a manual shut-off valve (62), an air circuit pressure reducing valve (34), an air circuit solenoid valve (33), and a gas flow meter (32) in sequence from the air inlet end to the air outlet end. The gas flow meter (32) and the air circuit solenoid valve (33) are connected to the linkage control unit (4).

4. The automatic atmospheric pressure water-air mixing flushing system for sludge pumps according to claim 1, characterized in that, The monitoring unit (5) includes an outlet remote pressure gauge (51) and a sludge pump operation status sensor (52). The outlet remote pressure gauge (51) is installed at the sludge discharge end of the sludge discharge pipe (12). The sludge pump operation status sensor (52) is a current transformer. The sludge pump operation status sensor (52) is connected in series with the motor control circuit of the sludge pump body (1). The outlet remote pressure gauge (51) and the sludge pump operation status sensor (52) are electrically connected to the linkage control unit (4).

5. An automatic atmospheric pressure water-air mixing flushing system for sludge pumps according to any one of claims 1 to 4, characterized in that, The linkage control unit (4) includes a time relay (41), which is electrically connected to a PLC controller (42). The PLC controller (42) is electrically connected to a water solenoid valve (23), a gas flow meter (32), a gas solenoid valve (33), an outlet remote pressure gauge (51), and a sludge pump operating status sensor (52). The PLC controller (42) is connected to an operating terminal (43), which is equipped with an alarm module (44).

6. The automatic atmospheric pressure water-air mixing flushing system for a sludge pump according to claim 5, characterized in that, The alarm module (44) includes an audible and visual alarm (441) and a fault indicator (442). The audible and visual alarm (441) is electrically connected to the fault indicator (442), and the fault indicator (442) is electrically connected to the operation terminal (43).

7. The automatic atmospheric pressure water-air mixing flushing system for sludge pumps according to claim 1, characterized in that, The sludge discharge pipe (12) is connected to the wastewater pipe (13), and the wastewater pipe (13) is equipped with a flushing and drain valve (7).

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