Sludge separating device for environmental protection

Abstract

This invention discloses a sludge separation device for environmental protection, belonging to the field of sludge treatment technology. It includes a sludge separation device body, a filtration feedback adjustment module, and a control unit. The sludge separation device body is equipped with a filtration rate detection mechanism, which is used to collect the filtration water volume of the filter screen at the bottom of the separation chamber in real time, identifying the degree of sludge dewatering and the tendency of filter screen clogging. The sludge separation device body also includes a pressure adjustment structure. In this invention, the pressure is adaptively adjusted through real-time feedback of the filtration flow rate, automatically adapting to sludge with different moisture contents and viscosities. The dewatering effect is stable and uniform, significantly improving the solid-liquid separation accuracy and dewatering qualification rate.

Description

Technical Field

[0001] This invention belongs to the field of sludge treatment technology, specifically a sludge separation device for environmental protection. Background Technology

[0002] In the field of environmental sludge treatment, sludge treatment and disposal has become an important component of ecological environment governance and green development. Sludge comes from a wide range of sources, including urban wastewater treatment plants, river dredging, aquaculture wastewater, food processing, and the chemical industry. It is characterized by high water content, complex composition, high viscosity, easy perishability, and a tendency to cause secondary pollution. In the process of sludge reduction, stabilization, harmlessness, and resource utilization, solid-liquid separation and dewatering is an essential preliminary step. Its separation effect directly determines subsequent transportation costs, treatment difficulty, and overall environmental governance efficiency.

[0003] Currently, the sludge separation devices widely used in the industry are mainly screw extrusion, stacked screw, or plate and frame dewatering equipment. These devices mostly adopt a fixed extrusion pressure design, relying on screw pushing, filter screen filtration, and fixed baffle structure to complete the dewatering operation. In actual application, due to the instability of sludge properties, its moisture content, fiber content, particle size, and viscosity will fluctuate significantly with the source, season, and process period. Traditional devices cannot automatically adjust the extrusion intensity according to the real-time state of the sludge, which easily leads to problems such as uneven dewatering, high moisture content in the sludge cake, and incomplete solid-liquid separation. Summary of the Invention

[0004] The purpose of this invention is to provide an environmental protection sludge separation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sludge separation device for environmental protection, comprising a sludge separation device body, a filtration feedback adjustment module, and a control unit; the filtration feedback adjustment module is used to collect filtration data in real time and perform calculation processing, and output corresponding extrusion pressure adjustment commands; the control unit is used to receive adjustment commands and drive the extrusion pressure adjustment structure to operate, thereby realizing adaptive control of the sludge separation process.

[0006] The sludge separation device is equipped with a filtration rate detection mechanism, which is used to collect the amount of water filtered out by the filter screen at the bottom of the separation chamber in real time and feed the filtration data back to the filtration feedback adjustment module to provide data for the adjustment of the extrusion pressure. The sludge separation device is also equipped with an extrusion pressure adjustment structure, which is used to apply adjustable extrusion pressure to the sludge to complete the solid-liquid separation operation.

[0007] As a further preferred embodiment of this technical solution: the water filtration feedback adjustment module includes a water volume acquisition unit, a separation calculation unit, and a pressure execution module; the water volume acquisition unit is used to detect the filtered water volume and calculate the rate of change of the filtered water flow during the separation process; the separation calculation unit calculates the response characteristic factor and the pressure control quantity based on the rate of change of the filtered water flow; the pressure execution module updates the parameters and issues parameter adjustment commands based on the output value of the separation calculation unit.

[0008] The control unit has a preset flow stability range. When the water flow rate is within this range, the current extrusion pressure and operating parameters remain stable. When the water flow rate deviates from this range, the spring preload of the extrusion pressure adjustment structure and the discharge back pressure are dynamically corrected.

[0009] As a further preferred embodiment of this technical solution: the device parameters remain constant after a single separation is completed; if the internal moisture content of the sludge to be separated subsequently changes within a preset range, the filtration feedback adjustment module will automatically update the data and adjust the back pressure and extrusion strength of the extrusion adjustment structure through the control unit.

[0010] As a further preferred embodiment of this technical solution, the filtration rate detection mechanism includes: an auger shaft, which is driven to rotate and push; a filter plate, which is fixedly installed at the bottom of the sludge separation chamber for filtering out water from the sludge; a water collection hopper, which is located below the filter plate for collecting the filtered clean water; and a drain pipe, which is located at the bottom of the water collection hopper and has a flow sensor installed inside for real-time acquisition of the amount of filtered water.

[0011] As a further preferred embodiment of this technical solution: the water collection hopper adopts a conical structure, and the flow sensor is installed at the connection between the water collection hopper and the drain pipe to collect the water flow rate in real time and reflect the sludge filtration rate, dewatering status and filter screen patency.

[0012] As a further preferred embodiment of this technical solution: the end of the auger shaft away from the drive assembly extends out of the sludge separation chamber opening and is rotatably connected to the support plate of the main frame via a bearing, and a sliding groove is provided at the extended end of the auger shaft.

[0013] As a further preferred embodiment of this technical solution: the extrusion pressure adjustment structure includes: an extrusion plate, which is movably disposed at the discharge port of the sludge separation chamber and slidably connected to a groove opened at one end of the auger shaft extension; a pressure adjustment plate, which is slidably connected to the groove at one end of the auger shaft extension, and a spring is connected between the extrusion plate and the pressure adjustment plate; and a hydraulic cylinder, the telescopic end of which is connected to a limit ring through a connecting rod, for driving the pressure adjustment plate to move and adjusting the preload of the spring.

[0014] As a further preferred embodiment of this technical solution: the hydraulic cylinder receives instructions from the control unit and adjusts the spring preload by moving the pressure adjustment plate, thereby changing the discharge back pressure and extrusion force of the extrusion plate on the sludge.

[0015] As a further preferred embodiment of this technical solution, the separation calculation unit is configured to: pre-set a reasonable range for the change rate of filtration flow rate, calculate the comprehensive influence factor of sludge separation, determine the spring preload and discharge back pressure based on the comprehensive influence factor, and periodically update the benchmark filtration flow rate.

[0016] As a further preferred embodiment of this technical solution, the pressure execution module is configured to: determine whether to adjust the extrusion pressure based on the rate of change of the filtered water flow rate, receive the extrusion control parameters, drive the extrusion pressure adjustment structure to perform the adjustment through the control unit, and cycle into the next detection cycle.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, the extrusion pressure is adaptively adjusted by real-time feedback of the filtration flow rate, which can automatically adapt to sludge with different moisture contents and different viscosities, resulting in stable and uniform dewatering effect and significantly improving the solid-liquid separation accuracy and dewatering qualification rate.

[0019] 2. In this invention, the squeezing pressure is automatically adjusted according to the change in water flow rate. When the filter screen shows signs of clogging, the pressure is automatically reduced, thus avoiding the problems of filter screen clogging and material blockage at the source. This greatly improves the continuous operation capability of the device and reduces manual cleaning and maintenance costs.

[0020] 3. Among them, by adopting a stable flow range + closed-loop control, the hydraulic cylinder action is adjusted only when the flow exceeds the range, which effectively avoids frequent start and stop of the actuator, making the operation more stable and reliable, with a high degree of automation, a wide range of applications, and meeting the high-efficiency and stable operation requirements of various environmental sludge treatment scenarios. Attached Figure Description

[0021] Figure 1 This is a front view of the structure of a sludge separation device for environmental protection according to the present invention;

[0022] Figure 2 This is a cross-sectional view of a sludge separation device for environmental protection according to the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the driving component;

[0024] Figure 4 This is a side view of the structure of a sludge separation device for environmental protection according to the present invention;

[0025] Figure 5 Exploded view of the structure for adjusting extrusion pressure;

[0026] Figure 6 This is a plan view of the operating structure of a sludge separation device for environmental protection according to the present invention;

[0027] Figure 7This is a schematic diagram illustrating the working principle of a sludge separation device for environmental protection according to the present invention.

[0028] Figure 8 A flowchart illustrating the process of separating the arithmetic units;

[0029] Figure 9 A flowchart of the pressure execution module;

[0030] Figure 10 This is a structural plan view of the water filtration feedback adjustment module.

[0031] Legend: 1. Main frame; 2. Sludge separation chamber; 3. Feed hopper; 4. Drive assembly;

[0032] Filtration rate testing mechanism: 401, screw conveyor shaft; 402, filter plate; 403, water collection hopper; 404, drain pipe;

[0033] Extrusion pressure adjustment structure: 501, extrusion plate; 502, pressure adjustment plate; 503, spring; 504, limiting groove; 505, limiting ring; 506, hydraulic cylinder. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] like Figures 1-10As shown, the present invention proposes a sludge separation device for environmental protection.

[0038] It includes the sludge separation device body, the water filtration feedback adjustment module, and the control unit;

[0039] The sludge separation device is equipped with a filtration rate detection mechanism, which is used to collect the amount of water filtered out of the filter screen at the bottom of the separation chamber in real time, identify the degree of sludge dewatering and the tendency of filter screen clogging, and prevent filter screen blockage, uneven dewatering, poor material discharge and incomplete solid-liquid separation during the separation process. The sludge separation device is also equipped with a pressure adjustment structure.

[0040] Among them, such as Figure 10 As shown, the water filtration feedback adjustment module includes a water volume acquisition unit, a separation calculation unit, and a pressure execution module. The water volume acquisition unit is used to detect the filtered water volume and calculate the rate of change of the filtered water flow during the separation process. The separation calculation unit calculates the response characteristic factor and the squeezing pressure control quantity based on the rate of change of the filtered water flow. The pressure execution module updates the parameters and issues parameter adjustment commands based on the output value of the separation calculation unit.

[0041] The control unit has a preset flow stability range, and the adjustment is only activated when the real-time filtration flow exceeds this range to avoid frequent operation of the hydraulic cylinder. The control unit receives parameter adjustment instructions from the filtration feedback adjustment module and controls the extrusion pressure adjustment structure to adjust the spring clamping force and discharge back pressure, so as to achieve adaptive extrusion adjustment of sludge with different moisture contents and different filtration states.

[0042] like Figure 1 , Figure 3 As shown, the sludge separation device integrates a main frame 1, a sludge separation chamber 2, and a feed hopper 3. The main frame 1 is equipped with a drive assembly 4, which provides rotational power for pushing and squeezing the sludge. It should be noted that the type of drive assembly 4 is not limited. For example, the drive assembly 4 includes a motor and a reducer, and the motor and reducer are connected by a belt. The sludge enters the sludge separation chamber 2 from the feed hopper 3. Furthermore, the bottom of the sludge separation chamber 2 has a filter screen structure.

[0043] One end of the sludge separation chamber 2 is open, and the lower end of the feed hopper 3 is connected to the interior of the sludge separation chamber 2.

[0044] Understandable, Figure 1 This is for illustrative purposes only; the actual shape, size, position, and structure of each component are not subject to change. Figure 1 The device can also add or simplify relevant components according to actual needs.

[0045] It should be noted that the separation target of this device is environmentally friendly sludge treatment, covering sludge structures of both thin and thick forms, including municipal sludge, river silt, aquaculture sludge, and industrial organic sludge. Municipal sludge separation includes dewatering of sludge with high water content and loose flocs; industrial sludge separation includes continuous separation of sludge with high viscosity, high fiber content, and a tendency to clog the mesh. This embodiment uses municipal sludge dewatering and separation as an example; the same structure can be used to separate other types of sludge, and will not be elaborated further below.

[0046] In this embodiment, the device parameters remain constant after a single separation is completed; if the internal moisture content of the sludge to be separated subsequently changes within a preset range, the filtration feedback adjustment module will automatically update the data and adjust the back pressure and extrusion intensity of the extrusion adjustment structure through the control unit to adapt to the sludge separation requirements of different moisture contents and different filtration states.

[0047] Based on the above embodiments, such as Figure 2 , Figure 6 As shown, the water acquisition unit includes a filtration rate detection mechanism located below the sludge separation chamber 2; the filtration rate detection mechanism includes: an auger shaft 401, which is rotated and pushed by a drive assembly 4; a filter plate 402, which is fixedly installed at the bottom of the sludge separation chamber 2 for filtering out water from the sludge; a water collection hopper 403, which is located below the filter plate 402 for collecting the filtered water; and a drain pipe 404, which is located at the bottom of the water collection hopper 403 and has a flow sensor installed inside for real-time acquisition of the filtered water volume.

[0048] Among them, the water collection hopper 403 adopts a conical structure, which can quickly guide water and avoid sewage residue. The flow sensor can collect the filtered water flow data in the drain pipe 404 in real time.

[0049] It is understood that the auger shaft 401 is connected to the drive end through a transmission assembly. Preferably, the transmission assembly is a coupling, and the auger shaft 401 is rotatably disposed inside the sludge separation chamber 2. The drive end is the drive assembly 4, and the auger shaft 401 is connected to the output end of the reducer in the drive assembly 4 through a coupling.

[0050] Among them, the end of the auger shaft 401 away from the drive assembly 4 extends out of the opening end of the sludge separation chamber 2 and is rotatably connected to the support plate on one side of the main frame 1 through a bearing.

[0051] It should be noted that the filter plate 402 adopts a perforated filter screen structure. Preferably, the filter plate 402 is fixed to the bottom of the sludge separation chamber 2 by bolts, such as by welding or snap-fit ​​connection. The size of the gap of the filter plate 402 is adapted to the particle size of the sludge particles, such as 0.3mm–0.8mm.

[0052] In this embodiment, the flow sensor works by being installed at the connection between the water collection hopper 403 and the drain pipe 404, and by collecting the water flow in the drain pipe 404 in real time, it reflects the sludge filtration rate, dewatering status and filter screen patency data in real time.

[0053] Cooperate Figure 2 As shown in the diagram, the flow sensor is located inside the drain pipe 404. During operation, the drive assembly 4 outputs rotational power, driving the auger shaft 401 in the sludge separation chamber 2 to push the sludge forward to complete the squeezing and filtration. Since sludge with different moisture contents has different filtration rates under the same squeezing pressure, the system can indirectly characterize the degree of sludge dewatering and the trend of moisture content change through real-time filtration flow rate. When the sludge moisture content is high or the filter screen is unobstructed, the amount of filtered water increases; when the sludge is dry or the filter screen shows signs of clogging, the amount of filtered water decreases. The flow sensor collects flow data in real time, and the real-time status of sludge separation is calculated.

[0054] ;

[0055] in, This is the real-time dehydration state coefficient. This is the flow correction factor. This is the real-time water filtration flow rate.

[0056] Simultaneously calculate the rate of change of filtration flow rate, using the following formula:

[0057] ;

[0058] in, This is the real-time filtration flow rate collected in this study. The reference filtration flow rate recorded by the water acquisition unit at the previous moment.

[0059] Based on the above embodiments, such as Figures 4-5 As shown, the pressure execution module includes a pressure adjustment structure mounted on the main frame 1. The pressure adjustment structure includes: a pressure plate 501, which is movably mounted at the outlet of the sludge separation chamber 2 and slidably connected to a groove at one end of the auger shaft 401; a pressure adjustment plate 502, which is slidably connected to the groove at one end of the auger shaft 401, and a spring 503 is connected between the pressure plate 501 and the pressure adjustment plate 502; and a hydraulic cylinder 506, whose telescopic end is connected to a limit ring 505 via a connecting rod, for driving the pressure adjustment plate 502 to move and adjust the preload of the spring 503.

[0060] The pressure adjustment plate 502 has a T-shaped limiting groove 504 for limiting the limiting ring 505, and the limiting ring 505 is rotatably connected in the limiting groove 504.

[0061] Furthermore, the connecting rod at the telescopic end of the hydraulic cylinder 506 is slidably connected to the support plate on one side of the main frame 1, which is used to limit the position of the connecting rod.

[0062] Understandably, the hydraulic cylinder 506 receives commands from the control unit. Preferably, the hydraulic cylinder 506 is an electric hydraulic cylinder 506 or a hydraulic cylinder, and is mounted at the end of the main frame 1, for example, by bolting or welding.

[0063] In this process, the extrusion plate 501 maintains its initial position under the pressure of the spring 503. After the sludge is pushed and extruded by the auger shaft 401 and dewatered, it pushes the extrusion plate 501 to overcome the force of the spring 503 and discharge it, thus realizing the simultaneous completion of extrusion dewatering and automatic discharge.

[0064] In this embodiment, the flow sensor provides real-time feedback on the filtered water volume. After calculation by the control unit, the hydraulic cylinder 506 is controlled to move the pressure adjustment plate 502, compressing or releasing the spring 503. This allows for real-time adjustment of the pressure and extrusion force of the spring 503 based on the sludge moisture content. The extension and retraction of the hydraulic cylinder 506 moves the pressure adjustment plate 502, thereby adjusting the compression of the spring 503 and consequently changing the discharge back pressure and extrusion force of the extrusion plate 501 on the sludge.

[0065] The hydraulic cylinder 506 receives commands from the control unit and adjusts the telescopic displacement and holding force in real time. Through the pressure adjustment plate 502, it drives the spring 503 to squeeze the extrusion plate 501, thereby controlling the magnitude of the sludge extrusion force and the smoothness of discharge.

[0066] In addition, the extrusion plate 501 in this device is a movable baffle structure that is compatible with the size of the discharge port of the sludge separation chamber 2, and can stably form back pressure to achieve sludge extrusion and dewatering; when the output parameters of the hydraulic cylinder 506 change, the preload of the spring 503 and the back pressure of the extrusion plate 501 are adjusted synchronously, and the sludge separation and dewatering effect changes adaptively accordingly.

[0067] In summary, as Figure 7 As shown, the water acquisition unit, control unit, and pressure execution module form a complete closed-loop control system. The separation calculation unit in the control unit combines the filtration flow data collected by the flow sensor to calculate the influencing characteristic factors including sludge moisture content, filtration rate, and filter screen patency. Through the pressure execution module, the extrusion pressure adjustment structure is dynamically modified during the separation process to achieve control and adaptive adjustment of the entire sludge separation process, ensuring the consistency of dewatering effect, reducing the risk of screen blockage, and further improving the dewatering accuracy and solid-liquid separation qualification rate of sludge separation.

[0068] Based on the above embodiments, the separation calculation unit determines the internal state of sludge separation according to the rate of change of filtration flow rate obtained by the water volume acquisition unit. When the separation state exceeds the preset range, the unit predicts the influencing characteristic factors based on the output parameters of the extrusion pressure adjustment structure and the rate of change of filtration flow rate. Using the benchmark filtration flow rate range as a constraint, the unit calculates the extrusion pressure and back pressure parameters and transmits them to the pressure execution module. After recording the parameters, the pressure execution module sends them to the control unit, which then issues instructions to adjust the spring preload and discharge back pressure of the extrusion pressure adjustment structure.

[0069] In this embodiment, the pressure adjustment structure and the water filtration feedback adjustment module work together; by adjusting the pressure in real time, filter screen clogging can be effectively avoided: when the water filtration flow is too low and the filter screen shows signs of clogging, the hydraulic cylinder automatically reduces the spring pressure, reduces the pressure, reduces the burden on the filter plate, and avoids filter screen clogging; when the water filtration flow is too high and the sludge is too thin, the pressure is automatically increased to improve the dewatering effect and further improve the stability and efficiency of sludge separation.

[0070] Reference Figure 8 As shown, the separation operation unit includes the following steps:

[0071] S10: Pre-set a reasonable range for the rate of change of the filtration flow rate, and collect the current operating parameters of the extrusion pressure adjustment structure, the reference filtration flow rate and the real-time filtration flow rate obtained by the water volume acquisition unit;

[0072] S20: Calculate the current rate of change of filtration flow rate and determine whether it is within the preset reasonable range; if it is within the range, keep the existing parameters of the squeezing pressure adjustment structure unchanged; if it exceeds the range, calculate the comprehensive impact factor of sludge separation.

[0073] S30: Based on the comprehensive influencing factors, calculate and determine the required output spring preload and discharge back pressure of the extrusion pressure adjustment structure;

[0074] S40: Update the baseline filtration flow rate, making = Then proceed to the next testing cycle.

[0075] In the above steps, the comprehensive impact factor of sludge separation is used to reflect the degree of adaptation of the current sludge separation state, and is composed of sludge inherent property factors and real-time separation state factors.

[0076] The comprehensive impact factor calculation model is as follows:

[0077] ;

[0078] in, The weighting of sludge inherent properties is dynamically adjusted as the separation process progresses. ; To separate the weights of state effects in real time, , These are preset coefficients.

[0079] The inherent property factors of sludge were calculated using a simplified model:

[0080] ;

[0081] in, The rate of change of filtration flow rate, , The system is preset with constants to reflect the influence of fixed properties such as sludge moisture content, viscosity, and particle composition on the separation effect.

[0082] Real-time separation state factors are calculated using a dynamic model:

[0083] ;

[0084] in, This represents the current percentage of the separation process. , The system is preset with constants to reflect the impact of real-time conditions such as filtration rate, filter screen patency, and pressure changes on the separation process.

[0085] Will , Substituting into the comprehensive model, we obtain the current sludge separation adaptation comprehensive index. .

[0086] The relationship between this index and the compression control amount is as follows:

[0087] ;

[0088] in, This is the proportionality coefficient. The offset constant is used; by substituting the target expected values ​​of the back pressure and spring preload, the optimal compression control parameters can be obtained.

[0089] The separation and calculation unit automatically adjusts the extrusion pressure and back pressure according to the comprehensive index, so that the auger and extrusion plate are always in a reasonable working state, avoiding problems such as filter screen clogging, uneven dewatering, and poor material discharge, thereby improving the stability of sludge separation and the consistency of dewatering.

[0090] Reference Figure 9 As shown, the pressure execution module includes the following steps:

[0091] B10: The water volume acquisition unit obtains the baseline filtration flow rate and the real-time filtration flow rate, and calculates the current filtration flow rate change rate;

[0092] B20: The separation calculation unit determines whether the flow rate change rate is within a preset reasonable range; if it is within the range, the current compression and back pressure parameters remain unchanged.

[0093] B30: If it exceeds the reasonable range, the separation calculation unit calculates the comprehensive influence factor based on the change rate of the filter flow rate and outputs the optimal squeezing and back pressure control parameters;

[0094] B40: The pressure actuation module receives new control parameters and drives the extrusion pressure adjustment structure to perform adjustment through the control unit;

[0095] B50: Update baseline filtration flow rate = Return to B10 to proceed to the next cycle of detection.

[0096] Working principle or structural principle: Sludge enters sludge separation chamber 2 from feed hopper 3. Drive component 4 drives screw shaft 401 to rotate continuously, pushing sludge towards discharge end; sludge undergoes solid-liquid separation under the squeezing action of screw shaft 401 and bottom filter plate 402. Water passes through filter plate 402 and flows into conical water collection hopper 403, and is then discharged through drain pipe 404, achieving preliminary dewatering;

[0097] The flow sensor inside the drain pipe 404 collects the filtered water flow signal in real time and transmits the data to the control unit. The control unit compares the real-time filtered water flow with the preset stable flow range and calculates the rate of change of filtered water flow. The separation and calculation unit analyzes the sludge moisture content, filtration rate and filter screen patency.

[0098] When the filtration flow rate is within a stable range, the control unit maintains the existing parameters of the extrusion pressure adjustment structure unchanged; when the filtration flow rate exceeds the range, the separation calculation unit calculates the comprehensive influence factor of sludge separation and outputs the extrusion pressure control parameters. The control unit drives the hydraulic cylinder 506 to extend and retract, which moves the pressure adjustment plate 502, adjusts the compression amount of the spring 503, and thus changes the back pressure of the extrusion plate 501 on the sludge, thereby achieving adaptive adjustment of the extrusion pressure.

[0099] Sludge with different moisture contents will have different filtration rates under the same extrusion pressure. The system indirectly characterizes the degree of sludge dewatering and the trend of moisture content change by real-time filtration flow rate. When the filtration flow rate is low and the filter screen shows signs of clogging, the hydraulic cylinder 506 reduces the preload of the spring 503, reduces the extrusion pressure, and reduces the pressure of the sludge on the filter plate 402 to avoid filter screen clogging. When the filtration flow rate is high and the sludge moisture content is high, the hydraulic cylinder 506 increases the preload of the spring 503, increases the extrusion pressure, and enhances the dewatering effect.

[0100] After dewatering, the sludge overcomes the pressure of spring 503 and pushes open the extrusion plate 501 to be automatically discharged, completing continuous discharge. The water acquisition unit, control unit and pressure execution module form a closed-loop control system, which periodically updates the reference filtration flow rate and performs cyclic detection and adjustment to keep the device in a stable and efficient separation state, realizing the adaptive, continuous and intelligent operation of sludge solid-liquid separation.

[0101] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0102] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0103] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sludge separation device for environmental protection, characterized in that: It includes a sludge separation device body, a filtration feedback adjustment module, and a control unit; the filtration feedback adjustment module is used to collect filtration data in real time and complete calculation processing, and output corresponding pressure adjustment commands; the control unit is used to receive adjustment commands and drive the pressure adjustment structure to operate, so as to realize adaptive control of the sludge separation process. The sludge separation device is equipped with a filtration rate detection mechanism, which is used to collect the amount of water filtered out by the filter screen at the bottom of the separation chamber in real time and feed the filtration data back to the filtration feedback adjustment module to provide data for the adjustment of the extrusion pressure. The sludge separation device is also equipped with an extrusion pressure adjustment structure, which is used to apply adjustable extrusion pressure to the sludge to complete the solid-liquid separation operation.

2. The sludge separation device for environmental protection according to claim 1, characterized in that: The filtration feedback adjustment module includes a water volume acquisition unit, a separation calculation unit, and a pressure execution module. The water volume acquisition unit is used to detect the filtered water volume and calculate the rate of change of the filtered water flow during the separation process. The separation calculation unit calculates the response characteristic factor and the squeezing pressure control amount based on the rate of change of the filtered water flow. The pressure execution module updates the parameters and issues parameter adjustment commands based on the output value of the separation calculation unit. The control unit has a preset flow stability range. When the water flow rate is within this range, the current extrusion pressure and operating parameters remain stable. When the water flow rate deviates from this range, the spring preload of the extrusion pressure adjustment structure and the discharge back pressure are dynamically corrected.

3. The sludge separation device for environmental protection according to claim 2, characterized in that: After a single separation is completed, the device parameters remain constant. If the internal moisture content of the sludge to be separated subsequently changes within a preset range, the filtration feedback adjustment module will automatically update the data and adjust the back pressure and extrusion strength of the extrusion adjustment structure through the control unit.

4. The sludge separation device for environmental protection according to claim 3, characterized in that: The filtration rate detection mechanism includes: an auger shaft, which is driven to rotate and push; a filter plate, which is fixedly installed at the bottom of the sludge separation chamber to filter out water from the sludge; a water collection hopper, which is located below the filter plate to collect the filtered clean water; and a drain pipe, which is located at the bottom of the water collection hopper and has a flow sensor installed inside to collect the amount of filtered water in real time.

5. The sludge separation device for environmental protection according to claim 4, characterized in that: The water collection hopper adopts a conical structure, and the flow sensor is installed at the connection between the water collection hopper and the drain pipe to collect the water flow rate in real time and reflect the sludge filtration rate, dewatering status and filter screen patency.

6. The sludge separation device for environmental protection according to claim 5, characterized in that: The end of the auger shaft away from the drive assembly extends out of the sludge separation chamber opening and is rotatably connected to the support plate of the main frame via a bearing. A groove is provided at the extended end of the auger shaft.

7. The sludge separation device for environmental protection according to claim 6, characterized in that: The pressure adjustment structure includes: a pressure plate, which is movably disposed at the discharge port of the sludge separation chamber and slidably connected to a groove opened at one end of the auger shaft extension; a pressure adjustment plate, which is slidably connected to the groove at one end of the auger shaft extension, and a spring is connected between the pressure plate and the pressure adjustment plate; and a hydraulic cylinder, whose telescopic end is connected to a limit ring through a connecting rod, for driving the pressure adjustment plate to move and adjust the preload of the spring.

8. The sludge separation device for environmental protection according to claim 7, characterized in that: The hydraulic cylinder receives commands from the control unit and adjusts the spring preload by moving the pressure adjustment plate, thereby changing the discharge back pressure and extrusion force of the extrusion plate on the sludge.

9. A sludge separation device for environmental protection according to claim 8, characterized in that: The separation calculation unit is configured as follows: a reasonable range of filter flow rate change rate is preset, the comprehensive influence factor of sludge separation is calculated, the spring preload and discharge back pressure are determined based on the comprehensive influence factor, and the benchmark filter flow rate is updated periodically.

10. A sludge separation device for environmental protection according to claim 9, characterized in that: The pressure execution module is configured to: determine whether to adjust the extrusion pressure based on the rate of change of the filtered water flow rate, receive the extrusion control parameters, drive the extrusion pressure adjustment structure through the control unit to perform the adjustment, and then cycle into the next detection cycle.

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