A sludge dewatering system

Abstract

The utility model discloses a kind of sludge dewatering systems, it is related to sludge treatment technical field, including centrifugal device, sludge inlet pipe, first pump, first inlet pipe, first outlet pipe, first shunt pipe and first shunt valve, one end of sludge inlet pipe is fixedly connected with the import of centrifugal device and is communicated, one end of first inlet pipe is fixedly connected with the import of first pump and is communicated, one end of first outlet pipe is fixedly connected with the export of first pump and is communicated, the other end of first outlet pipe is fixedly connected with sludge inlet pipe and is communicated, the first end of first shunt pipe is fixedly connected with first outlet pipe and is communicated, the second end of first shunt pipe is fixedly connected with first inlet pipe and is communicated, first shunt valve is fixedly arranged on first shunt pipe;The utility model can effectively improve the safety and stability of system, prolong equipment life.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, and in particular to a sludge dewatering system. Background Technology

[0002] Sludge dewatering is a sludge treatment method that removes water from fluidized raw, concentrated, or digested sludge and transforms it into semi-solid or solid sludge blocks. After dewatering, the moisture content of the sludge can be effectively reduced.

[0003] Mechanical centrifugation is a commonly used method for sludge dewatering. It utilizes the difference in specific gravity between solid and liquid components in sludge to achieve sludge-water separation.

[0004] Traditional mechanical centrifugal sludge dewatering systems use pumps to supply sludge to centrifuges. Before the sludge leaves the pump and reaches the centrifuge, it is prone to blockage in the pipeline between the pump and the centrifuge due to its high viscosity and impurities. This causes flow fluctuations, resulting in a surge in sludge pressure inside the pump, which can lead to wear on seals or damage to the pump body. Utility Model Content

[0005] The purpose of this invention is to provide a sludge dewatering system to solve the problems existing in the prior art, effectively improve the safety and stability of the system, and extend the service life of the equipment.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a sludge dewatering system, including a centrifuge device, a sludge inlet pipe, a first pump, a first inlet pipe, a first outlet pipe, a first diversion pipe, and a first diversion valve. One end of the sludge inlet pipe is fixedly connected to and communicates with the inlet of the centrifuge device. One end of the first inlet pipe is fixedly connected to and communicates with the inlet of the first pump. One end of the first outlet pipe is fixedly connected to and communicates with the outlet of the first pump. The other end of the first outlet pipe is fixedly connected to and communicates with the sludge inlet pipe. The first end of the first diversion pipe is fixedly connected to and communicates with the first outlet pipe. The second end of the first diversion pipe is fixedly connected to and communicates with the first inlet pipe. The first diversion valve is fixedly mounted on the first diversion pipe.

[0008] Preferably, it also includes a flow meter, which is fixedly installed on the sludge inlet pipe.

[0009] Preferably, it also includes a first mud inlet pipe and a first inlet valve, wherein the first end of the first mud inlet pipe is fixedly connected to and communicates with the first inlet pipe, and the first inlet valve is fixedly disposed on the first mud inlet pipe.

[0010] Preferably, it further includes a second pump, a second inlet pipe, a second outlet pipe, a second diverter pipe, and a second diverter valve. One end of the second inlet pipe is fixedly connected to and communicates with the inlet of the second pump. One end of the second outlet pipe is fixedly connected to and communicates with the outlet of the second pump. The other end of the second outlet pipe is fixedly connected to and communicates with the sludge inlet pipe. The first end of the second diverter pipe is fixedly connected to and communicates with the second outlet pipe. The second end of the second diverter pipe is fixedly connected to and communicates with the second inlet pipe. The second diverter valve is fixedly mounted on the second diverter pipe.

[0011] Preferably, it also includes a main mud inlet pipe, a second mud inlet pipe, and a second inlet valve. The first end of the second mud inlet pipe is fixedly connected to and communicates with the second inlet pipe. The second inlet valve is fixedly installed on the second mud inlet pipe. The first ends of the first mud inlet pipe and the first ends of the second mud inlet pipe are both fixedly connected to and communicate with one end of the main mud inlet pipe.

[0012] Preferably, it further includes a main water supply pipe, a main flushing valve, a first water supply pipe, a first flushing valve, a second water supply pipe, and a second flushing valve. One end of the first water supply pipe and one end of the second water supply pipe are fixedly connected to and communicate with the outlet end of the main water supply pipe. The other end of the first water supply pipe is fixedly connected to and communicates with the first inlet pipe. The other end of the second water supply pipe is fixedly connected to and communicates with the second inlet pipe. The main flushing valve is fixedly installed on the main water supply pipe. The first flushing valve is fixedly installed on the first water supply pipe. The second flushing valve is fixedly installed on the second water supply pipe.

[0013] Preferably, the system also includes a controller, wherein the flow meter is an electronic flow meter, and the first diverter valve, the first inlet valve, the second diverter valve, the second inlet valve, and the main flushing valve are all electrically controlled valves. The controller is communicatively connected to the electronic flow meter, the first diverter valve, the first inlet valve, the second diverter valve, the second inlet valve, and the main flushing valve, and the controller is capable of controlling the operation of the first diverter valve, the first inlet valve, the second diverter valve, the second inlet valve, and the main flushing valve.

[0014] Preferably, it further includes a first check valve, a first outlet valve, a second check valve, and a second outlet valve. The first check valve and the first outlet valve are both fixedly mounted on the first outlet pipe. The first check valve is positioned between the first outlet valve and the first pump. The second check valve and the second outlet valve are both fixedly mounted on the second outlet pipe. The second check valve is positioned between the second outlet valve and the second pump. The first end of the first diverter pipe is positioned between the first check valve and the first outlet valve. The first end of the second diverter pipe is positioned between the second check valve and the second outlet valve.

[0015] Preferably, it also includes a dosing pipe and a dosing device, one end of the dosing pipe is fixedly connected and communicates with the sludge inlet pipe and is placed between the centrifuge device and the flow meter, and the other end of the dosing pipe is fixedly connected and communicates with the dosing device.

[0016] Preferably, the device also includes a screw conveyor and a sludge transport trolley. The centrifugal device is a horizontal screw centrifuge. A sludge collection pipe and a drain pipe are fixedly installed on the centrifugal device. The bottom end of the screw conveyor is fixedly connected to and communicates with the sludge collection pipe. The sludge transport trolley is placed below the top of the screw conveyor and can receive the dewatered sludge unloaded from the top of the screw conveyor. The first pump is a single screw pump.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The sludge dewatering system provided by this utility model is equipped with a first outlet pipe and a sludge inlet pipe, enabling a first pump to supply sludge to a centrifuge. A first diversion pipe is provided to connect the first outlet pipe and the first inlet pipe, and a first diversion valve is provided on the first diversion pipe to control the diversion flow rate. When the end of the first outlet pipe away from the first pump or the sludge inlet pipe is blocked, the sludge pumped by the first pump can return to the first inlet pipe through the first diversion pipe, realizing bypass buffer protection. This effectively improves the safety and stability of the system and extends the service life of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the sludge dewatering system provided by this utility model;

[0021] In the diagram: 1-Centrifuge device, 2-Sludge inlet pipe, 3-First pump, 4-First inlet pipe, 5-First outlet pipe, 6-First branch pipe, 7-First branch valve, 8-Flow meter, 9-First sludge inlet pipe, 10-First inlet valve, 11-Second pump, 12-Second inlet pipe, 13-Second outlet pipe, 14-Second branch pipe, 15-Second branch valve, 16-Sludge main inlet pipe, 17-Second sludge inlet pipe, 18-Second inlet valve, 19-Water supply main pipe, 20-Flush main valve, 21-First water supply pipe, 22-First flush valve, 23-Second water supply pipe, 24-Second flush valve, 25-First check valve, 26-First outlet valve, 27-Second check valve, 28-Second outlet valve, 29-Dosing pipe, 30-Dosing device, 31-Screw conveyor, 32-Sludge transport trolley, 33-Sludge collection pipe, 34-Drainage pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The purpose of this invention is to provide a sludge dewatering system to solve the problems existing in the prior art, effectively improve the safety and stability of the system, and extend the service life of the equipment.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, this utility model provides a sludge dewatering system, including a centrifuge device 1, a sludge inlet pipe 2, a first pump 3, a first inlet pipe 4, a first outlet pipe 5, a first diversion pipe 6, and a first diversion valve 7. One end of the sludge inlet pipe 2 is fixedly connected to and communicates with the inlet of the centrifuge device 1. One end of the first inlet pipe 4 is fixedly connected to and communicates with the inlet of the first pump 3. One end of the first outlet pipe 5 is fixedly connected to and communicates with the outlet of the first pump 3. The other end of the first outlet pipe 5 is fixedly connected to and communicates with the sludge inlet pipe 2. The first end of the first diversion pipe 6 is fixedly connected to and communicates with the first outlet pipe 5. The second end of the first diversion pipe 6 is fixedly connected to and communicates with the first inlet pipe 4. The first diversion valve 7 is fixedly installed on the first diversion pipe 6.

[0026] The sludge dewatering system provided by this utility model is equipped with a first outlet pipe 5 and a sludge inlet pipe 2, enabling the first pump 3 to supply sludge to the centrifuge device 1. A first diversion pipe 6 is provided to connect the first outlet pipe 5 and the first inlet pipe 4, and a first diversion valve 7 is provided on the first diversion pipe 6 to control the diversion flow rate of the first diversion pipe 6. When the end of the first outlet pipe 5 away from the first pump 3 or the sludge inlet pipe 2 is blocked, the sludge pumped by the first pump 3 can return to the first inlet pipe 4 through the first diversion pipe 6, realizing bypass buffer protection, thereby effectively improving the safety and stability of the system and extending the service life of the equipment.

[0027] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment also includes a flow meter 8, which is fixedly installed on the sludge inlet pipe 2 to facilitate the detection of sludge flow rate in the sludge inlet pipe 2.

[0028] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a first sludge inlet pipe 9 and a first inlet valve 10. The first end of the first sludge inlet pipe 9 is fixedly connected to and communicates with the first inlet pipe 4. The first inlet valve 10 is fixedly installed on the first sludge inlet pipe 9 to facilitate the conveying of sludge to the first inlet pipe 4.

[0029] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a second pump 11, a second inlet pipe 12, a second outlet pipe 13, a second diversion pipe 14, and a second diversion valve 15. One end of the second inlet pipe 12 is fixedly connected to and communicates with the inlet of the second pump 11, one end of the second outlet pipe 13 is fixedly connected to and communicates with the outlet of the second pump 11, and the other end of the second outlet pipe 13 is fixedly connected to and communicates with the sludge inlet pipe 2. The first end of the second diversion pipe 14 is fixedly connected to and communicates with the second outlet pipe 13, and the second end of the second diversion pipe 14 is fixedly connected to and communicates with the second inlet pipe 12. The second diversion valve 15 is fixedly installed on the second diversion pipe 14 so that the second pump 11 and the first pump 3 can be used alternately and serve as substitutes for each other.

[0030] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a sludge inlet main pipe 16, a second sludge inlet pipe 17, and a second inlet valve 18. The first end of the second sludge inlet pipe 17 is fixedly connected to and communicates with the second inlet pipe 12. The second inlet valve 18 is fixedly installed on the second sludge inlet pipe 17 to facilitate the conveying of sludge to the first inlet pipe 4. The first end of the first sludge inlet pipe 9 and the first end of the second sludge inlet pipe 17 are both fixedly connected to and communicate with one end of the sludge inlet main pipe 16 to facilitate the conveying of sludge to the first sludge inlet pipe 9 and the second sludge inlet pipe 17.

[0031] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a main water supply pipe 19, a main flushing valve 20, a first water supply pipe 21, a first flushing valve 22, a second water supply pipe 23, and a second flushing valve 24. One end of the first water supply pipe 21 and one end of the second water supply pipe 23 are fixedly connected to and communicate with the outlet end of the main water supply pipe 19. The other end of the first water supply pipe 21 is fixedly connected to and communicates with the first inlet pipe 4. The other end of the second water supply pipe 23 is fixedly connected to and communicates with the second inlet pipe 12. The main flushing valve 20 is fixedly installed on the main water supply pipe 19, the first flushing valve 22 is fixedly installed on the first water supply pipe 21, and the second flushing valve 24 is fixedly installed on the second water supply pipe 23, so as to flush the system after use and before shutdown, and prevent the sludge from drying and clumping and damaging the equipment when restarting.

[0032] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment also includes a controller. The flow meter 8 is an electronic flow meter. The first diversion valve 7, the first inlet valve 10, the second diversion valve 15, the second inlet valve 18, and the main flushing valve 20 are all electrically controlled valves. The controller is communicatively connected to the electronic flow meter 8, the first diversion valve 7, the first inlet valve 10, the second diversion valve 15, the second inlet valve 18, and the main flushing valve 20. The controller can control the operation of the first diversion valve 7, the first inlet valve 10, the second diversion valve 15, the second inlet valve 18, and the main flushing valve 20, realizing automatic flow adjustment and automatic timed flushing before shutdown. This facilitates use, reduces the time operators spend on-site, improves processing efficiency, and avoids health damage to operators caused by toxic and harmful gases such as hydrogen sulfide emitted from the sludge dewatering work site.

[0033] In this embodiment, the controller specifically adopts a programmable logic controller (PLC) to realize PID constant flow sludge conveying. Specifically, the controller sets the target flow rate SV and collects the signal feedback value PV from the flow meter 8. When the user uses the first pump 3, the opening of the first diversion valve 7 and the first inlet valve 10 are controlled by PID. When PV < SV, the PID controls the opening of the first diversion valve 7 to decrease and the opening of the first inlet valve 10 to increase. When PV > SV, the PID controls the opening of the first diversion valve 7 to increase and the opening of the first inlet valve 10 to decrease, until the flow rate is adjusted to PV = SV. When the user uses the second pump 11, the PID controls... The PID controller adjusts the opening of the second diversion valve 15 and the second inlet valve 18. When PV < SV, the PID controller decreases the opening of the second diversion valve 15 and increases the opening of the second inlet valve 18. When PV > SV, the PID controller increases the opening of the second diversion valve 15 and decreases the opening of the second inlet valve 18 until the flow rate is adjusted to PV = SV. The opening range of the first inlet valve 10 and the second inlet valve 18 is 0% to 100%, and the opening range of the first diversion valve 7 and the second diversion valve 15 is set to 9% to 100%. The minimum opening is set to 9% (this minimum opening parameter can be changed according to actual debugging conditions). This can prevent blockages from causing PV = 0m. 3 When the flow rate is / h, the first diversion valve 7 or the second diversion valve 15 shall have an opening of at least 9% to divert sludge; after shutdown, the controller shall control the automatic flushing and then shutdown function. Before shutdown, the first inlet valve 10 and the second inlet valve 18 shall be closed, the main flushing valve 20 shall be opened, the flushing operation shall be set for a set time, and then the main flushing valve 20 shall be closed and then the machine shall be shut down.

[0034] In this embodiment, both the first flushing valve 22 and the second flushing valve 24 are manual valves. When the user uses the first pump 3, the first flushing valve 22 is normally open. When the user uses the second pump 11, the second flushing valve 24 is normally open. During production, the main flushing valve 20 is closed. Before shutdown, the main flushing valve 20 is opened. After flushing is completed, the main flushing valve 20 is closed.

[0035] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a first check valve 25, a first outlet valve 26, a second check valve 27, and a second outlet valve 28. The first check valve 25 and the first outlet valve 26 are both fixedly installed on the first outlet pipe 5, with the first check valve 25 positioned between the first outlet valve 26 and the first pump 3. The second check valve 27 and the second outlet valve 28 are both fixedly installed on the second outlet pipe 13, with the second check valve 27 positioned between the second outlet valve 28 and the second pump 11. The first end of the first diversion pipe 6 is positioned between the first check valve 25 and the first outlet valve 26, and the first end of the second diversion pipe 14 is positioned between the second check valve 27 and the second outlet valve 28. This system is simple and practical.

[0036] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a dosing pipe 29 and a dosing device 30. One end of the dosing pipe 29 is fixedly connected to and communicates with the sludge inlet pipe 2, and is placed between the centrifuge device 1 and the flow meter 8. The other end of the dosing pipe 29 is fixedly connected to and communicates with the dosing device 30, so as to add a dewatering agent to the sludge in the sludge inlet pipe 2 to enhance the dewatering effect. In this embodiment, the dewatering agent is polyacrylamide.

[0037] As a preferred embodiment of this invention, the sludge dewatering system provided in this embodiment further includes a screw conveyor 31 and a sludge transport trolley 32. The centrifuge device 1 is a horizontal screw centrifuge. A sludge collection pipe 33 and a drain pipe 34 are fixedly installed on the centrifuge device 1. The bottom end of the screw conveyor 31 is fixedly connected to and communicates with the sludge collection pipe 33. The sludge transport trolley 32 is placed below the top of the screw conveyor 31. The sludge transport trolley 32 can receive the dewatered sludge unloaded from the top of the screw conveyor 31. The sludge transport trolley 32 pulls away the dewatered sludge for processing. The separated water is discharged into the sewage system through the drain pipe 34. The first pump 3 is a single screw pump.

[0038] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sludge dewatering system, characterized in that: The device includes a centrifuge, a sludge inlet pipe, a first pump, a first inlet pipe, a first outlet pipe, a first diversion pipe, and a first diversion valve. One end of the sludge inlet pipe is fixedly connected to and communicates with the inlet of the centrifuge. One end of the first inlet pipe is fixedly connected to and communicates with the inlet of the first pump. One end of the first outlet pipe is fixedly connected to and communicates with the outlet of the first pump. The other end of the first outlet pipe is fixedly connected to and communicates with the sludge inlet pipe. The first end of the first diversion pipe is fixedly connected to and communicates with the first outlet pipe. The second end of the first diversion pipe is fixedly connected to and communicates with the first inlet pipe. The first diversion valve is fixedly mounted on the first diversion pipe.

2. The sludge dewatering system according to claim 1, characterized in that: It also includes a flow meter, which is fixedly installed on the sludge inlet pipe.

3. The sludge dewatering system according to claim 2, characterized in that: It also includes a first mud inlet pipe and a first inlet valve. The first end of the first mud inlet pipe is fixedly connected to and communicates with the first inlet pipe, and the first inlet valve is fixedly installed on the first mud inlet pipe.

4. The sludge dewatering system according to claim 3, characterized in that: It also includes a second pump, a second inlet pipe, a second outlet pipe, a second diversion pipe, and a second diversion valve. One end of the second inlet pipe is fixedly connected to and communicates with the inlet of the second pump. One end of the second outlet pipe is fixedly connected to and communicates with the outlet of the second pump. The other end of the second outlet pipe is fixedly connected to and communicates with the sludge inlet pipe. The first end of the second diversion pipe is fixedly connected to and communicates with the second outlet pipe. The second end of the second diversion pipe is fixedly connected to and communicates with the second inlet pipe. The second diversion valve is fixedly installed on the second diversion pipe.

5. The sludge dewatering system according to claim 4, characterized in that: It also includes a main mud inlet pipe, a second mud inlet pipe, and a second inlet valve. The first end of the second mud inlet pipe is fixedly connected to and communicates with the second inlet pipe. The second inlet valve is fixedly installed on the second mud inlet pipe. The first end of the first mud inlet pipe and the first end of the second mud inlet pipe are both fixedly connected to and communicate with one end of the main mud inlet pipe.

6. The sludge dewatering system according to claim 5, characterized in that: It also includes a main water supply pipe, a main flushing valve, a first water supply pipe, a first flushing valve, a second water supply pipe, and a second flushing valve. One end of the first water supply pipe and one end of the second water supply pipe are fixedly connected to and communicate with the outlet end of the main water supply pipe. The other end of the first water supply pipe is fixedly connected to and communicates with the first inlet pipe. The other end of the second water supply pipe is fixedly connected to and communicates with the second inlet pipe. The main flushing valve is fixedly installed on the main water supply pipe. The first flushing valve is fixedly installed on the first water supply pipe. The second flushing valve is fixedly installed on the second water supply pipe.

7. The sludge dewatering system according to claim 6, characterized in that: It also includes a controller, wherein the flow meter is an electronic flow meter, and the first diverter valve, the first inlet valve, the second diverter valve, the second inlet valve and the flushing main valve are all electrically controlled valves. The controller is communicatively connected to the electronic flow meter, the first diverter valve, the first inlet valve, the second diverter valve, the second inlet valve and the flushing main valve, and the controller is capable of controlling the operation of the first diverter valve, the first inlet valve, the second diverter valve, the second inlet valve and the flushing main valve.

8. The sludge dewatering system according to claim 4, characterized in that: It also includes a first check valve, a first outlet valve, a second check valve, and a second outlet valve. The first check valve and the first outlet valve are both fixedly installed on the first outlet pipe. The first check valve is located between the first outlet valve and the first pump. The second check valve and the second outlet valve are both fixedly installed on the second outlet pipe. The second check valve is located between the second outlet valve and the second pump. The first end of the first diverter pipe is located between the first check valve and the first outlet valve. The first end of the second diverter pipe is located between the second check valve and the second outlet valve.

9. The sludge dewatering system according to claim 2, characterized in that: It also includes a dosing pipe and a dosing device. One end of the dosing pipe is fixedly connected to and communicates with the sludge inlet pipe and is placed between the centrifuge device and the flow meter. The other end of the dosing pipe is fixedly connected to and communicates with the dosing device.

10. The sludge dewatering system according to claim 1, characterized in that: It also includes a screw conveyor and a sludge transport trolley. The centrifugal device is a horizontal screw centrifuge. A sludge collection pipe and a drain pipe are fixedly installed on the centrifugal device. The bottom end of the screw conveyor is fixedly connected to and communicates with the sludge collection pipe. The sludge transport trolley is placed below the top of the screw conveyor and can receive the dewatered sludge unloaded from the top of the screw conveyor. The first pump is a single screw pump.

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