Centrifugal sludge dewatering system

Abstract

The utility model provides a sludge centrifugal dewatering system which comprises a sludge storage tank, a centrifugal dewatering machine, a dosing control device, a first control unit and a second control unit, the centrifugal dewatering machine comprises a rotary drum, a spiral body, a first driving device and a second driving device, and a torque sensor is arranged on the spiral body; the sludge storage tank is connected with a sludge inlet in the rotary drum through a sludge water conveying mechanism, a sludge outlet valve is arranged on a sludge outlet in the rotary drum, a sludge outlet pipe is further connected to the sludge outlet, a sludge temporary storage bin is arranged at the sludge outlet end of the sludge outlet pipe, a sludge discharging device is connected to the sludge temporary storage bin, and a sludge discharging concentration meter is arranged on the sludge discharging device; the chemical feeding control device comprises a chemical pool and a chemical feeding pipe communicated with the rotary drum, and a chemical feeding pump is connected between the chemical pool and the chemical feeding pipe; the problems that in the prior art, a sludge centrifugal dewatering system cannot run automatically, and a dosing control device cannot regulate and control the added sludge dewatering agent in real time, so that the sludge dewatering quality is poor are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially is related to a sludge centrifugal dewatering system. BACKGROUND

[0002] Although the existing sludge centrifugal dewatering machine has one-key start-stop function, but in the start-up stage of centrifuge, due to the fluctuation of sludge concentration, the opening and closing of the slag valve on the centrifuge (the valve controlling the dewatered sludge to come out of the centrifuge) is controlled according to the set predetermined time, so it is very likely that the slag valve opens too early and causes the dilute sludge to fall into the lower sludge pump, affecting the quality of the dewatered sludge transported to the drying incineration, or the slag valve opens too late and causes the sludge to accumulate a lot in the slag valve gate, which is easy to damage the slag valve gate or cause the centrifuge to be blocked; in the shutdown stage of the centrifuge, due to the difference in sludge flow, the amount of sludge accumulated in the centrifuge drum is different, and at this time the opening and closing time of the slag valve is also controlled by setting a fixed time, so it is also possible that the slag valve closes too late and causes the sludge to accumulate a lot in the slag valve gate, which is easy to damage the slag valve gate, and is easy to cause the flushing water to overflow from the slag valve observation port, or the slag valve closes too early and causes the flushing water to flow from the slag outlet into the lower sludge pump buffer bin, affecting the quality of the dewatered sludge transported to the drying incineration. Therefore, the original one-key start-stop function of the system cannot be used normally, so in order to ensure the safe start and shutdown of the centrifuge, manual observation of the sludge or water at the slag outlet is required when the centrifuge is started and stopped, and the slag valve is operated manually on site, which wastes manpower and has low work efficiency.

[0003] At the same time, in order to improve the dewatering performance of sludge, a proper amount of organic polymer sludge dewatering agent should be uniformly added before mechanical dewatering to reduce the specific resistance of sludge and make the solid and liquid phases of sludge separate more easily. At present, the centrifugal dewatering system mainly adds a certain amount of sludge dewatering agent to the centrifuge through the dosing control device according to the pre-determined sludge concentration and flow rate, but due to the fluctuation of sludge flow and concentration, the amount of sludge dewatering agent added is not accurate, which leads to poor quality of the dewatered sludge produced from the centrifuge. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a sludge centrifugal dewatering system to solve the problems that the sludge centrifugal dewatering system in the prior art cannot be automatically operated, and the dosing control device cannot real-time regulate and control the added sludge dewatering agent, resulting in poor dewatering quality of sludge.

[0005] To achieve the above object and other related objects, the utility model provides a kind of sludge centrifugal dewatering system, including sludge storage tank;Centrifugal dewatering machine, including drum, spiral body, first driving device and second driving device, the spiral body rotation is set in the drum, the first driving device is used to drive the drum rotation, the second driving device is used to drive the spiral body rotation, torque sensor is equipped on the spiral body, the torque sensor is used to monitor the torque of the spiral body in real time;The drum is equipped with sludge inlet and sludge outlet, the sludge storage tank is connected with the sludge inlet on the drum by sludge water conveying mechanism, sludge outlet valve is equipped on the sludge outlet, the sludge outlet valve is used to control the opening and closing of the sludge outlet, sludge outlet pipe is also connected on the sludge outlet, the sludge end of the sludge outlet pipe is equipped with sludge buffer storehouse, sludge discharge device is connected on the sludge buffer storehouse, sludge concentration meter is equipped on the sludge discharge device;First control unit, the first driving device, the second driving device, the torque sensor, the sludge water conveying mechanism, the sludge outlet valve and the sludge discharge device are all connected with the first control unit communication;Dosing control device, including reagent tank and dosing pipe being communicated with the drum, reagent dosing pump is connected between the reagent tank and the dosing pipe;Second control unit, the reagent dosing pump and the sludge concentration meter are all connected with the second control unit communication, and the second control unit is connected with the first control unit communication.

[0006] Further, the sludge buffer storehouse is also equipped with high material level sensor and low material level sensor, the high material level sensor and the low material level sensor are all connected with the first control unit communication.

[0007] Further, the sludge water conveying mechanism includes sludge inlet screw rod pump and sludge water input pipe, one end of the sludge inlet screw rod pump is connected with the sludge storage tank, the other end of the sludge inlet screw rod pump is connected with the first end of the sludge water input pipe, and the second end of the sludge water input pipe is connected with the sludge inlet on the drum.

[0008] Further, the sludge storage tank and the sludge inlet screw rod pump are also equipped with sludge cutting machine.

[0009] Further, the sludge discharge device includes sludge discharge screw rod pump and sludge discharge pipe connected with the sludge discharge screw rod pump, and the sludge concentration meter is arranged on the sludge discharge pipe.

[0010] Further, the first driving device and the second driving device all include motor.

[0011] As described above, the sludge centrifugal dewatering system has the following beneficial effects: as described above, the sludge centrifugal dewatering system no longer relies on time-consuming and labor-consuming manual sampling and detection, reduces manual consumption and personnel contact risk, realizes fine operation management, effectively solves the problems that the sludge centrifugal dewatering system in the prior art cannot be automatically operated, and the dosing control device cannot real-time control of the dosing reagent, resulting in poor sludge dewatering quality, and is the highlight of the sludge treatment and disposal production line "new quality productivity" construction and transformation. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A structure schematic diagram of the sludge centrifugal dewatering system provided by the utility model is shown.

[0013] Figure 2 A cross-sectional schematic diagram of the centrifugal dewatering machine structure provided by the utility model is shown.

[0014] Figure 3 A flowchart of the automatic operation method of the sludge centrifugal dewatering system provided by the utility model is shown.

[0015] Figure 4 A logic control schematic diagram of the sludge discharging device provided by the utility model is shown.

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 10 centrifugal dewatering machine

[0018] 100 sludge storage tank

[0019] 11 rotating drum

[0020] 110 sludge outlet valve

[0021] 111 sludge outlet pipe

[0022] 12 spiral body

[0023] 13 first driving device

[0024] 14 second driving device

[0025] 20 dosing control device

[0026] 200 reagent tank

[0027] 21 dosing pipe

[0028] 211 reagent flow meter

[0029] 22 reagent dosing pump

[0030] 30 sludge water conveying mechanism

[0031] 31 sludge inlet screw pump

[0032] 32 sludge water input pipe

[0033] 321 sludge flow meter

[0034] 33 sludge cutter

[0035] 40 sludge buffer bin

[0036] 41 high material level sensor

[0037] 42 low material level sensor

[0038] 50 sludge discharge device

[0039] 51 sludge discharge screw pump

[0040] 52 sludge discharge pipe

[0041] 501 sludge concentration meter

[0042] 101 first control unit

[0043] 102 second control unit DETAILED DESCRIPTION

[0044] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied by using different specific embodiments, and the details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0045] The terms "first" and "second" and the like in the specification of the present application and the drawings are used to distinguish different objects or different treatments of the same object, and are not used to describe the specific order of the objects.

[0046] In addition, the terms "comprising" and "having" and any variations thereof mentioned in the description of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include other steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0047] Before any example embodiments are described in further detail, it should be noted that some example embodiments are described as processes depicted as flow diagrams. Although each can describe the operations as a sequential process, many of the operations can be performed in parallel, concurrently or even simultaneously. In addition, the order of the operations can be re-arranged. A process can be terminated when its operations are completed, but can also have additional steps not included in a figure. A process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc. When their operations are completed, the processes can be terminated, but the processes can also have additional steps not included in a figure. The processes can correspond with the methods, functions, procedures, subprograms, etc. Furthermore, embodiments and features of the subject matter described herein can be combined with each other as appropriate, without limiting the generality of the following description.

[0048] It should be noted that the terms "exemplary" and / or "for example" are used herein to mean "an example of." As used herein, "an example" or "one example" or "exemplary" means an example or instance of something, and not necessarily the only example or instance of that something. As used herein, "plurality" means two or more.

[0049] The first aspect of the present application provides a sludge centrifugal dewatering system, which comprises Figure 1 and Figure 2As shown, the sludge centrifugal dewatering system comprises a sludge storage tank 100, a centrifugal dewatering machine 10, a chemical feeding control device 20, a first control unit 101 and a second control unit 201, wherein the centrifugal dewatering machine 10 comprises a rotating drum 11, a screw body 12, a first driving device 13 and a second driving device 14, specifically, the screw body 12 is rotatably arranged in the rotating drum 11, the first driving device 13 is used to drive the rotating drum 11 to rotate, the second driving device 14 is used to drive the screw body 12 to rotate, and a torque sensor (not shown in the figure) is arranged on the screw body 12, which is used to monitor the torque of the screw body 12 in real time; the rotating drum 11 is provided with a sludge inlet and a sludge outlet, the sludge storage tank 100 is connected with the sludge inlet of the rotating drum 11 through a sludge water conveying mechanism 30, a sludge outlet valve 110 is arranged on the sludge outlet of the rotating drum 11, which is used to control the opening and closing of the sludge outlet, a sludge outlet pipe 111 is also connected with the sludge outlet, a sludge buffer warehouse 40 is arranged at the sludge outlet end of the sludge outlet pipe 111, a sludge discharging device 50 is connected with the sludge buffer warehouse 40, which is used to discharge the dewatered sludge stored in the sludge buffer warehouse 40, and a sludge concentration meter 501 is arranged on the sludge discharging device 50, which is used to monitor the solid content of the dewatered sludge, i.e. the sludge outlet solid content; the first driving device 13, the second driving device 14, the torque sensor, the sludge water conveying mechanism 30, the sludge outlet valve 110 and the sludge discharging device 50 are all in communication connection with the first control unit 101; the chemical feeding control device 20 comprises a chemical tank 200 and a chemical feeding pipe 21 connected with the rotating drum 11, and a chemical feeding pump 22 is connected between the chemical tank 200 and the chemical feeding pipe 21; the chemical feeding pump 22 and the sludge concentration meter 501 are both in communication connection with the second control unit 201, and the second control unit 201 is also in communication connection with the first control unit 101.

[0050] The sludge centrifugal dewatering system of the utility model in operation, through sludge water conveying mechanism 30 to the drum 11 conveying sludge water, dosing control device 20 will calculate the corresponding dosing quantity (this is prior art so here will not be described in detail) according to the sludge water concentration (sludge concentration) and sludge water flow (sludge flow) of conveying. In the utility model, the centrifugal dewatering machine is running, so that the screw body 12 runs at the set torque target value, according to the standard requirement when the torque of the screw body 12 reaches the set torque target value and runs for a period of time, the sludge dewatering rate quality produced is better, therefore the utility model through real-time monitoring the torque of the screw body 12, and the torque monitoring value of the screw body 12 that real-time monitoring is transmitted to the control system of centrifugal dewatering machine, namely the first control unit 101, when the torque monitoring value reaches the set torque target value and continues to set time period, the first control unit 101 will control the mud valve 110 to open in time, and then can completely avoid the mud valve opening valve too early and too late, and can realize automatic control. On the other hand, considering that the concentration and flow of sludge water bet in the drum may fluctuate, and then will affect the proportion of sludge water and reagent in the drum 11, and then will affect the change of sludge amount and sludge dryness in the drum 11, and then will affect the torque of the screw body 12, the utility model will transmit the torque monitoring value of the screw body 12 that real-time monitoring to the second control unit 102 through the first control unit 101 in operation, the second control unit 102 compares the real-time torque monitoring value of the screw body 12 with the set torque target value, if the torque monitoring value is greater than the torque target value, then the second control unit 102 controls the reagent dosing pump 22 to reduce reagent bet quantity (reduce reagent flow). Conversely, the second control unit 102 controls the reagent dosing pump 22 to increase reagent bet quantity (increase reagent flow), and then can realize the real-time automatic regulation and control of reagent dosing quantity, so that the torque of the screw body 12 remains at the torque target value, and then can greatly improve the sludge quality and running stability of the sludge centrifugal dewatering system produced. In addition, when starting to discharge mud, the second control unit 102 is transmitted to the second control unit 102 through the mud concentration meter 501 with the real-time monitoring of the mud solid content monitoring value (the solid content of dewatered sludge), the second control unit 102 compares the mud solid content monitoring value with the set mud solid content target value, when the mud solid content monitoring value is greater than the mud solid content target value, then the second control unit 102 controls the reagent dosing pump 22 to reduce reagent bet quantity based on the above regulation and control of reagent dosing quantity according to the torque of the screw body 12. Conversely, the mud solid content monitoring value is less than the mud solid content target value, then the second control unit 102 will control the reagent dosing pump 22 to increase reagent dosing quantity, and then can further accurately regulate and control reagent dosing quantity, so that the sludge centrifugal dewatering system reaches the best reagent addition rate, further improves the high-quality stable operation of the centrifugal dewatering machine.In summary, the sludge centrifugal dewatering system no longer relies on time-consuming and laborious manual sampling and detection, reduces manual consumption and personnel contact risk, realizes fine operation management, effectively solves the problems that the sludge centrifugal dewatering system in the prior art cannot be automatically operated, and the dosing control device cannot real-time control of the dosing reagent, resulting in poor sludge dewatering quality, and is a highlight of sludge treatment and disposal production line "new quality productivity" construction and transformation.

[0051] No longer rely on time-consuming and laborious manual sampling and laboratory detection, reduce manual consumption and personnel contact risk, realize fine operation management, and is a highlight of sludge treatment and disposal production line "new quality productivity" construction and transformation.

[0052] Further, considering that when the sludge discharging device 50 discharges the dewatered sludge in the sludge buffer bin 40, the situation of "shortage" may occur, that is, the rate of discharging sludge from the sludge outlet of the rotating drum 11 to the sludge buffer bin 40 cannot keep up with the rate of discharging sludge by the sludge discharging device 50, which will further cause the sludge discharging device 50 to frequently stop, which will first affect the service life of the sludge discharging device, and secondly, since the sludge in the sludge discharging device pipeline does not flow when the sludge discharging device stops, the result detected by the sludge concentration meter 501 will be relatively lagging, the detection result will not be accurate, and the accurate control of the second control unit 102 on the dosage of the reagent will be affected. Therefore, preferably, such as Figure 1As shown, in the embodiment, the sludge buffer bin 40 is further provided with a high material level sensor 41 and a low material level sensor 42, which are both connected in communication with the first control unit 101. During operation, when the dewatered sludge stored in the sludge buffer bin 40 triggers the high material level sensor 41, the high material level sensor 41 transmits a detected high material level signal to the first control unit 101, and the first control unit 101 controls the sludge discharging device 50 to start according to the high material level signal. Specifically, the first control unit 101 first controls the sludge discharging device 50 to operate at a first working frequency for a set time, and then controls the sludge discharging device 50 to operate at a second working frequency smaller than the first working frequency, until the dewatered sludge stored in the sludge buffer bin 40 triggers the low material level sensor 42. When the dewatered sludge stored in the sludge buffer bin 40 triggers the low material level sensor 42, the low material level sensor transmits a detected low material level signal to the first control unit 101, and the first control unit 101 controls the sludge discharging device 50 to stop according to the low material level signal. That is, in the utility model, the sludge discharging device 50 is not operated at a constant working frequency. When the dewatered sludge stored in the sludge buffer bin 40 triggers the high material level sensor, which is equivalent to full bin, the first control unit 101 controls the sludge discharging device 50 to discharge sludge at a higher working frequency. After the sludge discharging device 50 operates at the higher working frequency for a set time (so that the dewatered sludge in the sludge buffer bin 40 is approximately at a medium material level), the first control unit 101 automatically controls the sludge discharging device 50 to discharge sludge at a lower working frequency. In this way, the sludge discharging speed of the sludge discharging device 50 can be reduced, the operation time of the sludge discharging device 50 can be prolonged, and thus the number of shutdowns of the sludge discharging device 50 can be reduced, and even uninterrupted operation of the sludge discharging device can be realized.

[0053] Further, as shown in the drawings, Figure 1 In the embodiment, the sludge water conveying mechanism 30 comprises a sludge inlet screw pump 31 and a sludge water input pipe 32. Specifically, one end of the sludge inlet screw pump 31 is connected with the sludge storage pool 100, the other end of the sludge inlet screw pump 31 is connected with a first end of the sludge water input pipe 32, and a second end of the sludge water input pipe 32 is connected with the sludge outlet on the rotary drum 11. Specifically, a sludge inlet flow meter 321 and a sludge inlet concentration meter are further arranged on the sludge water input pipe 32.

[0054] Further, in order to realize visualization of the medicine inlet flow for the convenience of observation of the operating personnel, preferably, as shown in the drawings, Figure 1 A medicine inlet flow meter 211 is further arranged on the medicine adding pipe 21.

[0055] Further, in order to prevent large sludge or impurity particles in the sludge water from causing blockage of the sludge inlet screw pump 31 and the medicine adding pipe 32, preferably, as shown in the drawings, Figure 1As shown, a sludge cutting machine 33 is arranged between the sludge storage tank 100 and the sludge inlet screw pump 31, and the sludge cutting machine 33 is arranged between the sludge storage tank 100 and the sludge inlet screw pump 31, so that the sludge water pumped out of the sludge storage tank 100 first passes through the sludge cutting machine 33 to cut the large sludge and impurity particles possibly contained in the sludge water, and then enters the sludge inlet screw pump, thereby improving the stability of sludge water conveying.

[0056] Further, as shown in the drawings, Figure 1 In this embodiment, the sludge discharge device 50 includes a sludge discharge screw pump 51 and a sludge discharge pipe 52 connected to the sludge discharge screw pump 51, and specifically, the sludge concentration meter 501 is arranged on the sludge discharge pipe 52.

[0057] Specifically, in this embodiment, the first driving device 13 and the second driving device 14 are both motors.

[0058] As shown in the drawings, Figure 3 The second aspect of the utility model further provides an automatic operation method of the sludge centrifugal dewatering system, which comprises the following steps:

[0059] S1, the first control unit controls the first driving device and the second driving device to start, and then the second control unit starts the chemical dosing pump to inject chemicals into the drum of the centrifugal dewatering machine, and the first control unit starts the sludge water conveying mechanism to inject sludge water into the drum of the centrifugal dewatering machine;

[0060] Specifically, in this step S1, when the second driving device 14 drives the spiral body 12 to drive, the spiral body 12 runs at a set constant torque target value.

[0061] S2, the torque sensor monitors the torque of the spiral body in real time and transmits the monitored torque monitoring value to the first control unit, the first control unit transmits the received torque monitoring value to the second control unit, the second control unit compares the torque monitoring value with the set torque target value, if the torque monitoring value is greater than the torque target value, the second control unit controls the chemical dosing pump to reduce the amount of chemical injection; otherwise, the second control unit controls the chemical dosing pump to increase the amount of chemical injection;

[0062] S3, when the first control unit receives the torque monitoring value reaching the torque target value and lasting for a set period of time, the first control unit controls the sludge outlet valve to open;

[0063] S4. The first control unit controls the sludge discharge device to start, and the sludge discharge device discharges the dewatered sludge that has fallen into the sludge buffer bin.

[0064] The automated operation method of this sludge centrifugal dewatering system completely avoids the premature or delayed opening of the sludge discharge valve and enables automatic control. During the dewatering process, the torque of the screw conveyor is monitored in real time and compared with the set target torque value, allowing for automatic real-time adjustment of the reagent dosage. This improves the accuracy of reagent dosage and thus enhances the quality of the sludge produced and the stability of the system. The beneficial effects of this automated operation method are the same as those of the sludge centrifugal dewatering system described above, and will not be repeated here.

[0065] Specifically, such as Figure 4 As shown, step S4 specifically includes: when the dewatered sludge stored in the sludge buffer silo 40 triggers the high level sensor 41, the high level sensor 41 transmits the detected high level signal to the first control unit 101. The first control unit 101 controls the sludge discharge device 50 to run at a first operating frequency for a set time according to the high level signal, and then controls the sludge discharge device 50 to run at a second operating frequency until the dewatered sludge stored in the sludge buffer silo 40 triggers the low level sensor 42. Specifically, the first operating frequency is greater than the second operating frequency. When the dewatered sludge stored in the sludge buffer silo 40 triggers the low level sensor 42, the low level sensor 42 transmits the detected low level signal to the first control unit 101. The first control unit 101 controls the sludge discharge device 50 to stop according to the low level signal. For example, when the first control unit 101 receives a high material level signal, it controls the sludge discharge device 50 to operate at a frequency of 40Hz for 4 minutes. After the set time (4 minutes) is reached, the first control unit 101 automatically controls the sludge discharge device 50 to continue operating at a frequency of 20Hz until it receives a low material level signal, at which point the first control unit 101 controls the sludge discharge device 50 to stop. This reduces the sludge discharge rate of the sludge discharge device 50 and extends its operating time, thus reducing the number of shutdowns and even enabling uninterrupted operation. This solves the problems of frequent shutdowns of the sludge discharge device 50, affecting its service life, and inaccurate sludge concentration meter readings in the prior art.

[0066] Furthermore, in this embodiment, as Figure 3As shown, the process also includes step S5: the sludge concentration meter transmits the monitored solids content of the dewatered sludge to the second control unit in real time. The second control unit compares the received solids content with the set target solids content. If the solids content is greater than the target solids content, the second control unit controls the chemical dosing pump to reduce the amount of chemical added; conversely, the second control unit controls the chemical dosing pump to increase the amount of chemical added. This step S5 allows for further control of the chemical dosing based on the torque of the spiral 12, enabling more precise control of the chemical dosing and achieving the optimal chemical addition rate for the sludge centrifugal dewatering system, thus further improving the high-quality and stable operation of the centrifugal dewatering machine.

[0067] Furthermore, to make the solids content of the sludge monitored by the sludge concentration meter more accurate, in this embodiment, the second control unit 102 also has a filtering function. That is, within a unit time, the second control unit 102 continuously takes n solids content monitoring values, then removes the values ​​with larger errors (i.e., the maximum and minimum values), and takes the average of the remaining n-2 solids content monitoring values ​​as the solids content monitoring value for that unit time. Through this function, interference caused by data fluctuations during detection can be filtered out, and the timeliness of the system can be improved.

[0068] In addition, in this embodiment, the dosage coefficients for "winter" and "summer" modes can be preset in the second control unit 102, and a switching button can be provided on the human-machine interface of the second control unit 102. In winter mode, the adjustment range of the dosage coefficient is increased; in summer mode, the adjustment range of the dosage coefficient is decreased. Furthermore, the adjustment range of the dosage coefficient can be further set according to actual conditions. Switching between the two modes allows the system to better adapt to operating conditions under different mud properties in different seasons, improving the stability and reliability of the system.

[0069] In summary, the sludge centrifugal dewatering system and automatic operation method, through the structure improvement of centrifugal dewatering machine, the increase and optimization of data acquisition and logic control, the disturbance processing capacity of the system to the parameters such as mud flow, mud concentration, mud moisture content and the like is greatly improved, the deviation of the large condition of the dosing rate is reduced, the accurate dosing control system is significantly improved in stability, real-time and accuracy. The system responds more quickly and accurately to the parameters such as mud flow, mud concentration, mud concentration and the like, reduces the misoperation and alarm caused by data fluctuation and interference. At the same time, through the linkage of the centrifugal dewatering machine control unit and the dosing control unit, the system can better adapt to the changes of different working conditions and stages, and can realize automatic stable operation, not only reduces the labor intensity of workers, but also improves the production operation efficiency. Therefore, the utility model effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0070] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A sludge centrifugal dewatering system characterized by, The utility model relates to a sludge treatment system, which comprises: a sludge storage tank; a centrifugal dewatering machine, which comprises a rotating drum, a screw body, a first driving device and a second driving device, the screw body is rotatably arranged in the rotating drum, the first driving device is used to drive the rotating drum to rotate, the second driving device is used to drive the screw body to rotate, a torque sensor is arranged on the screw body, and the torque sensor is used to monitor the torque of the screw body in real time; a sludge inlet and a sludge outlet are arranged on the rotating drum, the sludge storage tank is connected with the sludge inlet of the rotating drum through a sludge water conveying mechanism, a sludge outlet valve is arranged on the sludge outlet, the sludge outlet valve is used to control the opening and closing of the sludge outlet, a sludge outlet pipe is further connected to the sludge outlet, a sludge buffer bin is arranged at the sludge outlet end of the sludge outlet pipe, a sludge discharging device is connected to the sludge buffer bin, and a sludge concentration meter is arranged on the sludge discharging device; a first control unit, the first driving device, the second driving device, the torque sensor, the sludge water conveying mechanism, the sludge outlet valve and the sludge discharging device are all in communication connection with the first control unit; a dosing control device, which comprises a medicament tank and a dosing pipe connected with the rotating drum, a medicament feeding pump is connected between the medicament tank and the dosing pipe; a second control unit, the medicament feeding pump and the sludge concentration meter are both in communication connection with the second control unit, and the second control unit is in communication connection with the first control unit.

2. The sludge centrifugal dewatering system according to claim 1, wherein A high material level sensor and a low material level sensor are further arranged on the sludge buffer bin, and the high material level sensor and the low material level sensor are both in communication connection with the first control unit.

3. The sludge centrifugal dewatering system of claim 1, wherein, The sludge water conveying mechanism comprises a sludge inlet screw pump and a sludge water input pipe, one end of the sludge inlet screw pump is connected with the sludge storage tank, the other end of the sludge inlet screw pump is connected with a first end of the sludge water input pipe, and a second end of the sludge water input pipe is connected with the sludge inlet of the rotating drum.

4. The sludge centrifugal dewatering system of claim 3, wherein, A sludge cutting machine is further arranged between the sludge storage tank and the sludge inlet screw pump.

5. The sludge centrifugal dewatering system of claim 1, wherein, The sludge discharging device comprises a sludge discharging screw pump and a sludge discharging pipe connected with the sludge discharging screw pump, and the sludge concentration meter is arranged on the sludge discharging pipe.

6. The sludge centrifugal dewatering system of claim 1, wherein The first driving device and the second driving device both comprise a motor.

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