Energy-adjustable sludge filter pressing device

Abstract

The utility model discloses an energy-adjustable sludge filter pressing device in the field of sludge treatment, which comprises a filter press, a sludge inlet of the filter press is connected with an outlet of a screw sludge inlet pump through a pipeline I, the pipeline I is respectively provided with a pump outlet valve I and a sensor I, an inlet of the screw sludge inlet pump is connected with a sludge homogenizing tank through a pipeline II, and the pump outlet valve I is connected with a pump outlet valve II. A first pump inlet valve is arranged on the second pipeline, the first sensor is connected with the screw sludge inlet pump through a screw sludge inlet pump frequency converter, a water inlet of the filter press is connected with an outlet of the squeezing water pump through a third pipeline, a second pump outlet valve and a second sensor are arranged on the third pipeline, and an inlet of the squeezing water pump is connected with the water tank through a fourth pipeline. A second pump inlet valve is arranged on the fourth pipeline, and the second sensor is connected with the squeezing water pump through a squeezing water pump frequency converter. The sludge dewatering device is simple and convenient to operate and can efficiently realize sludge dewatering of the sewage station in an energy-saving manner.

Description

Technical Field

[0001] This utility model belongs to the field of sludge treatment, and specifically relates to an adjustable-energy sludge filter press. Background Technology

[0002] In current technology, most factory wastewater treatment systems use simple, fully manually operated sludge filter presses. The entire sludge feeding process of a diaphragm plate and frame filter press involves gradually decreasing the sludge flow rate and gradually increasing the sludge pressure until the pressure reaches the filter press's allowable pressure, at which point the feeding process ends. The screw sludge pump operates at industrial frequency, and overpressure may occur in the later stages of the feeding process. Previously, manual valves were installed on the inlet and outlet pipes of the sludge pump to regulate the sludge flow rate and pressure by manually opening and closing these valves in real time. After sludge feeding, a pressing pump is activated to dewater the sludge. The pressing process also follows this pattern: initially, the pressing pressure is low, resulting in a large amount of sludge filtration; later, the pressing pressure is high, resulting in a small amount of sludge filtration, until the sludge filtration is very small, at which point the pressing process ends. Again, the pressing pump operates at industrial frequency, and overpressure may occur in the later stages of water pressing. Manual valves are also required on the inlet and outlet pipes of the sludge pump to regulate the pressing pressure by manually opening and closing these valves in real time.

[0003] Current sludge treatment equipment cannot be automatically adjusted and controlled, resulting in wasted manpower and excessive energy consumption. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable-energy sludge dewatering device that is easier to operate and more energy-efficient in achieving sludge dewatering in wastewater treatment plants, thereby saving energy.

[0005] The purpose of this utility model is achieved as follows: An adjustable-energy sludge filter press includes a filter press. The sludge inlet of the filter press is connected to the outlet of a screw sludge pump via a first pipe. A pump outlet valve and a sensor are respectively installed on the first pipe. The inlet of the screw sludge pump is connected to a sludge homogenization tank via a second pipe. A pump inlet valve is installed on the second pipe. The sensor is connected to the screw sludge pump via a frequency converter. The water inlet of the filter press is connected to the outlet of a pressing water pump via a third pipe. A pump outlet valve and a sensor are respectively installed on the third pipe. The inlet of the pressing water pump is connected to a water tank via a fourth pipe. A pump inlet valve is installed on the fourth pipe. The sensor is connected to the pressing water pump via a frequency converter.

[0006] The frequency converters of the pressing water pump and the screw feed pump of this utility model meet the operating requirements. The pressure values ​​detected by the sludge pressure sensor and the pressing pressure sensor are fed back to the frequency converters of the screw feed pump and the pressing water pump, thereby adjusting the speed of the screw feed pump and the pressing water pump to complete the sludge dewatering work. This utility model is a sludge filtration device for sewage treatment. Through the frequency conversion speed regulation of the screw feed pump and the pressing pump, the automatic control of sludge feeding and pressing in the sludge filtration process is realized. Compared with the prior art, the beneficial effects of this utility model are: (1) the sludge feeding and pressing pressure of sludge filtration is controllable; (2) the sludge feeding and pressing time of sludge filtration is controllable; (3) the sludge filtration equipment has a longer service life. This device realizes automatic sludge feeding and automatic pressing, which not only shortens the sludge feeding and pressing time, but also reduces the power lost due to the opening of the bypass valve during the sludge feeding and pressing process, effectively saving electricity and making the operation simpler.

[0007] As a further improvement of this utility model, the filter press is a diaphragm plate and frame filter press.

[0008] As a further improvement of this utility model, sensor one is a mud inlet pressure sensor, and sensor two is a pressing pressure sensor. The working conditions of the mud inlet pump and the pressing water pump are detected by the mud inlet pressure and the pressing pressure.

[0009] As a further improvement of this utility model, a fifth pipe is provided between the first pipe and the second pipe, and a bypass valve first is provided on the fifth pipe. A sixth pipe is provided between the third pipe and the fourth pipe, and a bypass valve second is provided on the sixth pipe. Sludge can directly enter the first pump outlet valve through the first pump inlet valve and the first bypass valve, and water can directly enter the second pump outlet valve through the second pump inlet valve and the second bypass valve.

[0010] As a further improvement of this utility model, a mud inlet valve is provided on the first pipe near the mud inlet of the filter press, and a pressing water inlet valve is provided on the third pipe near the water inlet of the filter press. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] The components are as follows: 1. Filter press; 2. Pipeline 1; 3. Screw feed pump; 4. Pump outlet valve 1; 5. Sensor 1; 6. Pipeline 2; 7. Sludge homogenizing tank; 8. Pump inlet valve 1; 9. Screw feed pump frequency converter; 10. Pipeline 3; 11. Press water pump; 12. Pump outlet valve 2; 13. Sensor 2; 14. Pipeline 4; 15. Pump inlet valve 2; 16. Press water pump frequency converter; 17. Pipeline 5; 18. Bypass valve 1; 19. Pipeline 6; 20. Bypass valve 2; 21. Sludge inlet valve; 22. Press water inlet valve; 23. Water tank. Detailed Implementation

[0013] like Figure 1 As shown, an adjustable-energy sludge filter press device includes a filter press 1, which is a diaphragm plate and frame filter press 1. The sludge inlet of the filter press 1 is connected to the outlet of the screw sludge pump 3 via a pipe 1 2. A pump outlet valve 1 4 and a sensor 1 5 are respectively installed on the pipe 1 2. The inlet of the screw sludge pump 3 is connected to the sludge homogenization tank 7 via a pipe 2 6. A pump inlet valve 1 8 is installed on the pipe 2 6. The sensor 1 5 is connected to the screw sludge pump 3 via a frequency converter. The water inlet of the filter press 1 is connected to the outlet of the pressing water pump 11 via a pipe 3 10. A pump outlet valve 2 12 and a sensor 2 13 are respectively installed on the pipe 3 10. The inlet of the pressing water pump 11 is connected to the water tank 23 via a pipe 4 14. A pump inlet valve 2 15 is installed on the pipe 4 14. The sensor 2 13 is connected to the pressing water pump 11 via a frequency converter. Sensor 5 is a mud inlet pressure sensor, and sensor 13 is a pressing pressure sensor. The working conditions of the mud inlet pump and the pressing water pump 11 are detected by the mud inlet pressure and the pressing pressure.

[0014] Pipeline 17 is installed between pipeline 1 (2) and pipeline 2 (6), and bypass valve 18 is installed on pipeline 5 (17). Pipeline 19 is installed between pipeline 3 (10) and pipeline 4 (14), and bypass valve 20 is installed on pipeline 6 (19). Sludge can directly enter pump outlet valve 4 through pump inlet valve 1 (8) and bypass valve 1 (18), and water can directly enter pump outlet valve 2 (12) through pump inlet valve 2 (15) and bypass valve 2 (20).

[0015] A mud inlet valve 21 is installed on pipe 12 near the mud inlet of filter press 1, and a pressing water inlet valve 22 is installed on pipe 310 near the water inlet of filter press 1.

[0016] The frequency converters of the pressing water pump 11 and the screw sludge feed pump 3 in this invention meet the operational requirements. The pressure values ​​detected by the sludge feed pressure sensor and the pressing pressure sensor are fed back to the frequency converters of the screw sludge feed pump 3 and the pressing water pump 11, thereby adjusting the speed of the screw sludge feed pump 3 and the pressing water pump 11 to complete the sludge dewatering process. This sludge dewatering device for wastewater treatment achieves automatic control of sludge feeding and pressing during the sludge dewatering process through frequency conversion speed regulation of the screw sludge feed pump 3 and the pressing pump.

[0017] This utility model discloses an adjustable and energy-saving sludge filter press. Through a control loop consisting of pipeline pressure, a frequency converter, and a screw feed pump 3 motor, the screw feed pump 3 achieves variable frequency speed regulation, allowing the sludge to be fed into the diaphragm plate and frame filter press 1 according to a filtration curve where the feed volume decreases and the feed pressure increases. After the filter press 1 finishes feeding, another control loop consisting of pipeline pressure, a frequency converter, and a press pump motor ensures that the sludge is pressed and dewatered under stable water pressure, achieving the required moisture content. The mud enters the subsequent processing steps. This device effectively solves the equipment damage caused by overpressure mud feeding and overpressure pressing. At the same time, it makes operation simpler. During the mud feeding and pressing process, it is no longer necessary to manually adjust the opening of the bypass valve between the inlet and outlet of the screw mud feeding pump 3 and the pressing pump. It is only necessary to set the pressure value of each control circuit according to the mud feeding curve and the pressing curve to realize automatic mud feeding and automatic pressing. This not only shortens the mud feeding and pressing time, but also reduces the power loss due to the opening of the bypass valve during the mud feeding and pressing process, effectively saving electricity and energy.

[0018] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. An adjustable-energy sludge filter press, comprising a filter press, characterized in that, The filter press's inlet is connected to the outlet of the screw feed pump via pipe one. Pipe one is equipped with a pump outlet valve one and a sensor one. The screw feed pump's inlet is connected to the sludge homogenization tank via pipe two. Pipe two is equipped with a pump inlet valve one. The sensor one is connected to the screw feed pump via a screw feed pump frequency converter. The filter press's water inlet is connected to the outlet of the press water pump via pipe three. Pipe three is equipped with a pump outlet valve two and a sensor two. The press water pump's inlet is connected to the water tank via pipe four. Pipe four is equipped with a pump inlet valve two. The sensor two is connected to the press water pump via a press water pump frequency converter.

2. The adjustable-energy sludge filter press according to claim 1, characterized in that, The filter press is a diaphragm plate and frame filter press.

3. The adjustable-energy sludge filter press according to claim 1 or 2, characterized in that, The first sensor is a mud inlet pressure sensor, and the second sensor is a pressing pressure sensor.

4. An adjustable-energy sludge filter press according to claim 1 or 2, characterized in that, Pipeline 5 is installed between pipeline 1 and pipeline 2, and bypass valve 1 is installed on pipeline 5. Pipeline 6 is installed between pipeline 3 and pipeline 4, and bypass valve 2 is installed on pipeline 6.

5. An adjustable-energy sludge filter press according to claim 1 or 2, characterized in that, A mud inlet valve is installed on pipe one near the mud inlet of the filter press, and a pressing water inlet valve is installed on pipe three near the water inlet of the filter press.

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