WO2024113452A1

WO2024113452A1 - Sludge plate-and-frame pressure filtration simulation optimization apparatus and method for using same

Info

Publication number: WO2024113452A1
Application number: PCT/CN2022/143345
Authority: WO
Inventors: 曾嘉辰; 王盛; 严晓威; 郝宇驰; 陶润礼; 袁超哲; 骆佳成
Original assignee: 中交疏浚技术装备国家工程研究中心有限公司
Priority date: 2022-11-28
Filing date: 2022-12-29
Publication date: 2024-06-06

Abstract

Disclosed in the present invention is a sludge plate-and-frame pressure filtration simulation optimization apparatus, comprising: a working test stand; a pressure filter tank, a pressure control system and an integrated display control system, which are arranged on the working test stand; a pneumatic system, which is mounted above the pressure filter tank by means of a fixing support; and a filtrate collector, which is arranged below the working test stand. Further disclosed in the present invention is a method for using the sludge plate-and-frame pressure filtration simulation optimization apparatus. The present invention can optimize the structure of a simulated pressing test device, accurately measure changes in the masses of slurry and a filtrate during a pressing process, intelligently display data information during a test process and effectively simulate a pressure filtration process of a plate-and-frame filter press, and can effectively test a change in the dewatering degree of sludge under different agent addition amounts, thereby providing device assistance for optimal type selection and proportioning of sludge dewatering agents.

Description

A sludge plate and frame filter press simulation optimization device and its use method

Technical Field

The invention belongs to the technical field of solid waste treatment, and in particular relates to a sludge plate and frame filter press simulation optimization device and a use method thereof.

Background technique

With the continuous advancement of domestic dredging technology and processes, environmental dredging and desilting projects can be seen everywhere across the country. The amount of mud generated is huge, and the problem of sludge dewatering needs to be solved urgently. At present, plate and frame filter presses are widely used in various industries for mud-water separation due to their high efficiency, high dewatering depth, and mature factory operation.

In actual projects, as the properties of sludge change, the corresponding plate and frame filter press models and the types and dosages of dewatering and flocculation agents will also be different, so it is necessary to determine the solidification mechanism of dredged sludge dewatering in advance. Indoor sludge pressing equipment can detect the dewatering performance of sludge after conditioning and simulate the pressing effect of plate and frame filter press in actual projects. Most of the existing indoor simulated sludge pressing equipment uses a beaker to pour a quantitative mud for testing. The mud will remain on the wall of the beaker, resulting in the actual mud feed amount being less than the added amount, thereby affecting the pressing calculation results. Some sludge pressing equipment uses pumped quantitative mud for testing, but these pressing equipment cannot measure the real-time quality changes of mud cake and filtrate during the pressing test, and cannot accurately monitor the moisture changes of sludge during the pressing process in real time. In addition, the operation process of existing sludge pressing equipment is mainly manual, with complex operation, large errors, and low intelligence, so it is not convenient for the application and promotion of the equipment.

In summary, in order to complete the mud treatment test more accurately and conveniently and provide more accurate and reliable guidance for the selection of dredged mud dewatering agents and the engineering application of plate and frame filter presses, a sludge plate and frame filter press simulation optimization device is urgently needed.

Summary of the invention

In view of the problems existing in the existing sludge simulation pressing equipment, such as long test cycle, complicated equipment operation and poor measurement accuracy, the present invention provides a sludge plate and frame filter press simulation optimization device and its use method, the purpose of which is to: optimize the structure of the simulation pressing test equipment, measure the quality changes of mud cake and filtrate during the mud pressing process in real time, intelligently display the data information during the test process, improve the operability of the test equipment, and realize the effective simulation of the plate and frame filter press.

To achieve the above-mentioned purpose, the first aspect of the present invention provides a sludge plate-frame filter press simulation optimization device, comprising a working test bench, a filter press tank, a pressure control system and an integrated display control system arranged on the working test bench, a pneumatic system installed above the filter press tank through a fixed bracket, and a filtrate collector arranged below the working test bench, wherein:

The filter press tank is a cylindrical container with an opening at the upper end, and a limit ring is provided at the lower part of the inner wall thereof for placing a mesh filter plate. A filtrate outlet and an inclined plate are provided at the bottom of the filter press tank, and the inclined plate is fixed obliquely to the bottom of the filter press tank, and the lowest point of the inclined plate is flush with the filtrate outlet;

The pressure control system is connected to the integrated display control system and the pneumatic system respectively, and a vacuum pressure gauge and a pressure control valve are provided on the pressure control system;

The pneumatic system is a press, comprising a frame, a cylinder fixed to the top of the frame, a push rod retractable at the lower end of the cylinder, and a filter press disc fixed at the bottom end of the push rod, the filter press disc extends into the filter press tank and can move up and down along the inner wall of the filter press tank, and the outer edge of the filter press disc is tightly connected to the inner wall of the filter press tank;

The filter press disc is also provided with a sensor, which is connected to the integrated display control system through a wire; the bottom of the filter press tank and the filtrate collector are both provided with a weighing system, which is connected to the integrated display system through a wire;

The integrated display control system is used to collect data from the sensor of the filter press disc and the two weighing systems of the filter press tank and the filtrate collector, and to display and store the data.

According to the present invention, the limiting ring provided on the inner wall of the filter press tank is a continuous ring or a discontinuous ring.

According to the present invention, the mesh filter plate is also covered with a multifilament filter cloth, and an anti-seepage rubber ring is further arranged above the multifilament filter cloth, the outer diameter of the multifilament filter cloth is larger than the inner diameter of the filter press tank, and the inner diameter of the anti-seepage rubber ring is larger than the outer diameter of the mesh filter plate and smaller than the inner diameter of the filter press tank, so that the anti-seepage rubber ring can press the edge of the multifilament filter cloth into the gap between the mesh filter and the inner wall of the filter press tank.

According to the present invention, the inner wall surface of the filter press tank is further provided with a limiting groove matched with the anti-seepage rubber ring, so that the anti-seepage rubber ring can be partially embedded in the groove when under pressure.

Preferably, the inner diameter of the limiting ring is about 1-2 mm smaller than the outer diameter of the mesh filter plate, so that the mesh filter plate can be placed on the limiting ring with an appropriate gap between the outer edge and the inner wall of the filter press tank.

According to a preferred embodiment of the present invention, the mesh filter plate is provided with 14 symmetrical mesh holes, each of which has a diameter of about 20 to 25 mm, to ensure that the filtrate produced by squeezing is discharged in a timely and uniform manner.

According to a preferred embodiment of the present invention, the inclined plate has an inclination angle of 27-30 degrees, which can speed up the flow of the squeezed filtrate into the filtrate collector and reduce the retention residue of the filtrate.

According to the present invention, a control valve is provided on the filtrate outlet at the bottom of the filter press tank, and is connected to the filtrate collector below through a hose.

According to a preferred embodiment of the present invention, the integrated display control system includes a visual information display system, a data acquisition module and a data storage module, wherein:

The data acquisition module is used to collect pressure data monitored by the sensor provided on the filter press disc and quality data monitored by the weighing system provided at the bottom of the filter press tank and the filtrate collector;

The visual information display system is used to display the collected data of the filter press disc sensor and the weighing system in real time;

The data storage module is used to store the data collected by the data collection module.

Furthermore, the visual information display system includes: a communication module, a control module, a monitoring module, an operation button module, a display screen driving module and a display screen, wherein:

The communication module is used to connect the data acquisition module and the data storage module;

The control module is used to retrieve the data results in the data storage module through the communication module and transmit the data to the monitoring module;

The monitoring module is used to receive data from the communication module, and to display the data collected from the filter press disc sensor and the weighing system on the display screen in real time through the display driving module;

The operation button module is used to control the switch of the integrated display control system and the start-up of the sludge plate and frame filter press simulation optimization device.

The second aspect of the present invention provides a method for using the above-mentioned sludge plate and frame filter press simulation optimization device, comprising the following steps:

(1) Mud preparation: First, take mud samples from the actual project, determine the moisture content of the mud by drying method, take an appropriate amount of mud and place it in a beaker, turn on the stirrer, add dehydrating agent while stirring, and the stirring and conditioning time is 3 to 5 minutes;

(2) Preparation for filter press: Place the mesh filter plate into the limiting ring, lay the multifilament filter cloth used for actual plate and frame filter press on the mesh filter plate, then place the anti-seepage rubber ring on the multifilament filter cloth and press it between the mesh filter plate and the inner wall of the filter press tank;

(3) Mud feeding: Pour the prepared mud into the filter press tank, adjust the filter press disc to the specified position to form a closed volume filter press chamber, and open the drain valve;

(4) Simulated pressing: Run the air compressor, start with low-pressure pressing, the low-pressure is the same as the plate-frame filter press pressure, and maintain for 5 minutes, then start high-pressure pressing, the high-pressure is twice the plate-frame filter press pressure, and maintain for 3 minutes;

(5) End of the test: After the filtration is completed, the system transmits a stop pressing command, and the filter press disc returns to its initial position; turn off the pressing power switch, remove the filter press tank, take out the mud cake and filter cloth, measure the moisture content of the mud cake, export the test monitoring data, and complete the test.

The sludge plate and frame filter press simulation optimization device of the present invention can optimize the structure of the simulated pressing test equipment, accurately measure the quality changes of the mud and filtrate during the pressing process, intelligently display the data information during the test process, effectively simulate the filtration process of the plate and frame filter press, and can effectively test the changes in the dehydration degree of the sludge under different agent addition amounts, thereby providing equipment assistance for the optimal selection and proportioning of sludge dehydration agents.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a sludge plate and frame filter press simulation optimization device according to the present invention.

FIG. 2 is a schematic diagram showing the internal components of the filter press tank.

FIG. 3 is a schematic diagram of an exploded view of a filter assembly such as a mesh filter plate.

FIG. 4 is a schematic diagram showing the module structure of the integrated display control system.

Description of the figure number:

1-working test bench; 2-filter press tank; 3-pressure control system; 4-integrated display control system; 5-fixed bracket; 6-pneumatic system; 7-filtrate collector; 8-sieve filter plate; 9-weighing system; 21-limiting ring; 22-filtrate outlet; 23-inclined plate; 24-control valve; 25-anti-seepage rubber ring; 27-hose; 31-vacuum pressure gauge; 32-pressure control valve; 61-frame; 62-cylinder; 63-push rod; 64-filter press disc; 81 multifilament filter cloth; 82-sieve hole;

100 - Visual information display system; 110 - Communication module; 120 - Control module; 130 - Monitoring module; 140 - Operation button module; 150 - Display screen drive module; 160 - Display screen; 200 - Data acquisition module; 300 - Data storage module.

Detailed ways

The technical solution of the present invention is clearly and completely described below with specific embodiments in conjunction with the accompanying drawings. It should be understood that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

Example 1: Sludge plate and frame filter press simulation optimization device

As shown in FIG1 , the sludge plate-frame filter press simulation optimization device of this embodiment includes a working test bench 1, a filter press tank 2, a pressure control system 3 and an integrated display control system 4 arranged on the working test bench 1, a pneumatic system 6 installed above the filter press tank 2 through a fixed bracket 5, and a filtrate collector 7 arranged below the working test bench 1, wherein:

The filter press tank 2 is a cylindrical container with an upper opening, a limiting ring 21 is provided at the lower part of the inner wall thereof, and a mesh filter plate 8 is placed on the limiting ring 21. A filtrate outlet 22 and an inclined plate 23 are provided at the bottom of the filter press tank 2. The inclined plate 23 is tilted and fixed to the bottom of the filter press tank 2. As shown in FIG. 2 , the lowest point of the inclined plate 23 is flush with the filtrate outlet 22, so that the filtrate in the filter press tank 2 can be discharged from the filtrate outlet 22 as much as possible.

The pressure control system 3 is connected to the integrated display control system 4 and the pneumatic system 6 respectively, and the pressure control system 3 is provided with a vacuum pressure gauge 31 and a pressure control valve 32 for manually controlling and monitoring the pressure during the squeezing test; the pressure control system 3 provides compressed air through an air compressor (not shown in the figure), thereby providing power for the pneumatic system 6 to squeeze the sludge;

The pneumatic system 6 is a press, including a frame 61, a cylinder 62 fixed to the top of the frame 61, a push rod 63 which is retractable at the lower end of the cylinder 62, and a filter press disc 64 fixed at the bottom end of the push rod 63, the filter press disc 64 extends into the filter press tank 2 and can move up and down along the inner wall of the filter press tank 2, and the outer edge of the filter press disc 64 is tightly connected to the inner wall of the filter press tank 2;

The filter press disc 64 is also provided with a sensor (not shown in the figure), and is connected to the integrated display control system 4 through a wire; the bottom of the filter press tank 2 and the filtrate collector 7 are both provided with a weighing system 9, and are connected to the integrated display system 4 through a wire;

The integrated display control system 4 is used to collect data from the filter press disc 64 and the two weighing systems 9 and display and store the data.

Furthermore, the limiting ring 21 provided on the inner wall of the filter press tank 2 may be a continuous ring or a discontinuous ring, and both may achieve the purpose of limiting the position of the mesh filter plate 8 .

Furthermore, as shown in Figure 3, during the actual squeezing test, the mesh filter plate 8 is also covered with a multifilament filter cloth 81, and an impermeable rubber ring 25 is further arranged above the multifilament filter cloth 81, the outer diameter of the multifilament filter cloth 81 is larger than the inner diameter of the filter press tank 2, and the inner diameter of the impermeable rubber ring 25 is larger than the outer diameter of the mesh filter plate 8 and smaller than the inner diameter of the filter press tank 2, so that after the impermeable rubber ring 25 is placed on the multifilament filter cloth 81, the outer edge of the multifilament filter cloth 81 can cover the entire inner wall of the filter press tank 2, and the edge of the multifilament filter cloth 81 is pressed into the gap between the mesh filter plate 8 and the inner wall of the filter press tank 2 by the impermeable rubber ring 25, so as to enhance the sealing performance through the impermeable rubber ring 25 during the squeezing test to prevent sludge leakage between the mesh filter plate 8 and the inner wall of the filter press tank 2. Preferably, the inner wall surface of the filter press tank 2 is further provided with a limiting groove (not shown in the figure) adapted to the anti-seepage rubber ring 25, so that the anti-seepage rubber ring 25 can be partially embedded in the groove when under pressure, thereby ensuring the stability of the anti-seepage rubber ring 25. Preferably, the inner diameter of the limiting ring 21 is about 1 to 2 mm smaller than the outer diameter of the mesh filter plate 8, so that the mesh filter plate 8 can be placed on the limiting ring 21 with an appropriate gap between the outer edge and the inner wall of the filter press tank 2.

Furthermore, the sieve filter plate 8 is provided with 14 symmetrically positioned sieve holes 82, and the diameter of each sieve hole 82 is about 20 to 25 mm, which can ensure that the filtrate produced by squeezing is discharged in a timely and uniform manner; the anti-seepage rubber ring 25 is an O-ring made of fluororubber polyurethane silicon, and the specification model is 2.0.

Furthermore, the inclined plate 23 is made of a hydrophobic material, polytetrafluoroethylene, which can effectively prevent the loss of the squeezed filtrate during the squeezing test and ensure the accuracy of the filtrate amount in the filtrate collector 7; the inclination angle of the hydrophobic inclined plate 23 is 27 to 30 degrees, which can speed up the flow of the squeezed filtrate into the filtrate collector 7 and reduce the retention of the filtrate.

Furthermore, a control valve 24 is provided on the filtrate outlet 22 at the bottom of the filter press tank 2 and is connected to the filtrate collector 7 below through a hose 27 .

Preferably, the weighing system 9 provided at the bottom of the filter press tank 2 and the filtrate collector 7 has a measuring range of 500 g and an accuracy of 0.001 g.

Preferably, as shown in Figure 4, the integrated display control system 4 includes a visual information display system 100, a data acquisition module 200 and a data storage module 300, wherein the data acquisition module 200 is used to collect data monitored by the sensor provided on the filter press disc 64 and the weighing system 9 provided at the bottom of the filter press tank 2 and the filtrate collector 7; the visual information display system 100 is used to display the data collected by the sensor and the weighing system 9 in real time; and the data storage module 300 is used to store the data collected by the data acquisition module 200.

Furthermore, the visual display system 100 includes: a communication module 110, a control module 120, a monitoring module 130, an operation button module 140, a display screen driver module 150 and a display screen 160, wherein the communication module 110 is used to connect the data acquisition module 200 and the data storage module 300, the control module 120 is used to retrieve the data results in the data storage module 300 through the communication module 110, and pass the data to the monitoring module 130, the monitoring module 130 is used to receive data from the communication module 110, and display the data collected from the filter press disc sensor and the weighing system 9 on the display screen 160 in real time through the display driver module 150, and the operation button module 140 is used to control the switch of the integrated display control system 4 and the start and stop of the sludge plate and frame filter press simulation optimization device.

The data acquisition module 200 is connected to the weighing system 9 and the sensor on the filter press disc 64 through a data transmission line, wherein the weighing system 9 is reset to zero before the mud is poured into the filter press tank 2 to remove the influence of the residue of the last test and the equipment structure on the quality data; at the same time, the pressure sensor on the filter press disc 64 is reset to zero before starting the simulated pressing. The data monitored by each sensor (the two weighing systems 9 and the pressure sensor of the filter press disc 64) is transmitted to the data acquisition module 200. The communication module 110 is used to connect the data acquisition module 200 and the data storage module 300, and can convert the data of each sensor into the data structure required for visualization of the visualization information display system 100 according to the data type for storage.

In the visual information display system 100, the operation button module 140 is used to switch the sludge plate-frame filter press simulation optimization device, start the operation button simulation 140 and send instructions to the operation module to start the subsequent fully automatic simulation pressing. The control module 120 is programmed to receive information from the monitoring module 130, control the measurement of the sensor, and call the data in the data storage module 300 through the communication module 110. After turning on the operation button module 140, the control module 120 sends an instruction to the weighing system 9 to reset to zero, and at the same time sends a reset instruction to the pressure sensor on the filter press disc 64, and controls the communication module 110 to call the sensor measurement data to the monitoring module 130 in real time and display it in real time on the display screen 160 through the display screen driver module 150. When the pressure sensors on the weighing system 9 and the filter press disc 64 are both zero and the values are stable for more than 10s, the monitoring module 130 can display "Please add mud" on the display screen 160 through the display driver module 150. After the mud is manually poured into the filter press tank 2, the control module 120 controls the communication module 110 in real time to call the mass data of the weighing system 9 and the pressure data of the pressure sensor to the monitoring module 130, and controls the display driving module 150 through the monitoring module 130 to display in real time on the display screen 160; when the mud completely enters the filter press tank 2, wait for the mass data of the weighing system 9 to be stable for more than 15 seconds, and then store the stable mass data M1 of the weighing system 9 in the data storage module 300; the monitoring module 130 sends a signal to the control module 120 to start The control module 120 controls the pneumatic system 6 to start pressing according to the simulated pressing information. The control module 120 turns on the air compressor during the simulated pressing process. The control module 120 controls the air source pressure of the air compressor to be the same as the actual plate and frame filter press pressure value within 5 minutes after the start of the simulated pressing. The air source pressure of the air compressor is controlled to be twice the normal operating pressure value of the plate and frame filter press for 5 to 8 minutes. After 8 minutes, the air compressor is turned off to stop pressing, and the monitoring module 130 controls the display drive module 150 to display "pressing ended" on the display screen 160.

When the simulated squeezing starts, the control module 120 sends a command to the communication module 110, and controls the communication module 110 to call the pressure data of the pressure sensor, the mass data M2 of the weighing system 9, and the above-mentioned stored mass data M1 in real time, and no longer receives the mass data of the weighing system 9, and transmits the data to the monitoring module 130. The monitoring module 130 feeds back information to the control module 120 based on whether the pressure data reaches the standard value of the simulated squeezing in different time periods, and allows the pressure error to be within 1%. The control module 120 adjusts the air source pressure of the air compressor to ensure that the pressure remains constant during the squeezing process. At the same time, the monitoring module 130 controls the display driver module 150 to display the pressure time course change diagram on the display screen 160, wherein the filtrate collector 7 is the real-time display of the mass data M2 of the weighing system 9, and the mud cake mass is obtained by M1-M2, and the time course changes of the filtrate and mud cake mass are displayed in real time on the display screen 160.

The integrated display control system 4 can not only display and record the weight of the filtrate produced by pressing in real time, but also display and record the changes in the mud cake quality data in the filter press tank 2 during the pressing process, so as to realize real-time and accurate monitoring of the sludge dehydration and solidification process in the pressing test. In addition, the control module 120 can also control the pressure in the pneumatic system 6, set automatic control of the simulated pressing process, and realize intelligent control of the simulated pressing.

The method of using the above-mentioned sludge plate and frame filter press simulation optimization device is as follows:

(1) Mud preparation: First, take mud samples from the actual project, determine the moisture content of the mud by drying method, take 200g of mud and place it in a beaker, turn on the stirrer, add dehydrating agent while stirring, and stir for 3 to 5 minutes;

(2) Preparation for filter pressing: Place the mesh filter plate 8 into the limiting ring 21, lay the multifilament filter cloth 81 used for actual plate and frame filter pressing on the mesh filter plate 8, then place the anti-seepage rubber ring 25 on the multifilament filter cloth 81 and press it between the mesh filter plate 8 and the inner wall of the filter press tank 2;

(3) Mud feeding: Pour the prepared mud into the filter press tank 2, adjust the filter press disc 64 to a specified position to form a closed volume filter press chamber, and open the drain valve 24;

(4) Simulated pressing: Run the air compressor, start with low-pressure pressing, the low-pressure pressure is the same as the plate-frame filter press pressure value, and maintain it for 5 minutes, then start high-pressure pressing, the high-pressure pressure is twice the plate-frame filter press pressure value, and maintain it for 3 minutes;

(5) End of the test: After the filtration is completed, the system transmits a stop pressing command, and the filter press disc 64 returns to the initial position; turn off the pressing power switch, remove the filter press tank 2, take out the mud cake and filter cloth, measure the moisture content of the mud cake, export the test monitoring data, and complete the test.

In the above example, since the volume of the filter press tank 2 is pre-determined, the mud feed amount can be directly quantitatively configured through a beaker and poured into the filter press tank 2. The intelligent control system is adopted, the test operation is convenient and fast, and the simulated pressing test is efficient.

After the test, the filter press tank 2 is removed and turned upside down to remove the mud cake therein by shocking, and its moisture content is measured by drying method.

Application Examples

For the optimization of the sludge dehydration agent in the inner lake dredging project of a certain city in South China, the sludge plate and frame filter press simulation optimization device of Example 1 was selected, and the sludge pressing test was carried out according to the above steps. PAM was selected for dosing and conditioning to determine the optimal working conditions, wherein the low-pressure pressing time was 5 minutes and the high-pressure pressing time was 3 minutes. The specific test scheme is shown in the following Table 1:

Table 1

From the results in Table 1, it can be seen that group 4 is the best working condition, and the effect of sludge simulation pressing is the best. The moisture content of the mud cake produced after pressing measured by the drying method is the lowest, which is only 37.44%.

The above-mentioned embodiments only express the specific implementation of the present invention, and the description is relatively specific and detailed, but it should not be understood as limiting the scope of protection of the present application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the technical solution concept of the present invention, which all belong to the scope of the present invention.

Claims

A sludge plate-frame filter press simulation optimization device, characterized in that it comprises a working test bench, a filter press tank, a pressure control system and an integrated display control system arranged on the working test bench, a pneumatic system installed above the filter press tank through a fixed bracket, and a filtrate collector arranged below the working test bench, wherein:

The filter press tank is a cylindrical container with an opening at the upper end, and a limit ring is provided at the lower part of the inner wall thereof for placing a mesh filter plate. A filtrate outlet and an inclined plate are provided at the bottom of the filter press tank, and the inclined plate is fixed obliquely to the bottom of the filter press tank, and the lowest point of the inclined plate is flush with the filtrate outlet;

The pressure control system is connected to the integrated display control system and the pneumatic system respectively, and a vacuum pressure gauge and a pressure control valve are provided on the pressure control system;

The pneumatic system is a press, comprising a frame, a cylinder fixed to the top of the frame, a push rod retractable at the lower end of the cylinder, and a filter press disc fixed at the bottom end of the push rod, the filter press disc extends into the filter press tank and can move up and down along the inner wall of the filter press tank, and the outer edge of the filter press disc is tightly connected to the inner wall of the filter press tank;

The filter press disc is also provided with a sensor, which is connected to the integrated display control system through a wire; the bottom of the filter press tank and the filtrate collector are both provided with a weighing system, which is connected to the integrated display system through a wire;

The integrated display control system is used to collect data from the sensor of the filter press disc and the two weighing systems of the filter press tank and the filtrate collector, and to display and store the data.
The sludge plate and frame filter press simulation optimization device according to claim 1 is characterized in that the limiting ring provided on the inner wall of the filter press tank is a continuous ring or an intermittent ring.
The sludge plate and frame filter press simulation optimization device according to claim 1 is characterized in that the mesh filter plate is also covered with a multifilament filter cloth, and an anti-seepage rubber ring is further arranged above the multifilament filter cloth, the outer diameter of the multifilament filter cloth is larger than the inner diameter of the filter press tank, and the inner diameter of the anti-seepage rubber ring is larger than the outer diameter of the mesh filter plate and smaller than the inner diameter of the filter press tank, so that the anti-seepage rubber ring can press the edge of the multifilament filter cloth into the gap between the mesh filter and the inner wall of the filter press tank.
The sludge plate and frame filter press simulation optimization device according to claim 3 is characterized in that the inner wall surface of the filter press tank is further provided with a limiting groove adapted to the anti-seepage rubber ring, so that the anti-seepage rubber ring can be partially embedded in the groove when under pressure.
The sludge plate and frame filter press simulation optimization device according to claim 1 is characterized in that the inner diameter of the limiting ring is 1 to 2 mm smaller than the outer diameter of the mesh filter plate, so that the mesh filter plate can be placed on the limiting ring with an appropriate gap between the outer edge and the inner wall of the filter press tank.
The sludge plate and frame filter pressing simulation optimization device according to claim 1 is characterized in that the sieve filter plate is provided with 14 symmetrically positioned sieve holes, and the diameter of each sieve hole is about 20 to 25 mm to ensure that the filtrate produced by pressing is discharged in a timely and uniform manner.
The sludge plate and frame filter press simulation optimization device according to claim 1 is characterized in that the inclination angle of the inclined plate is 27 to 30°.
The sludge plate and frame filter press simulation optimization device according to claim 1 is characterized in that a control valve is provided on the filtrate outlet at the bottom of the filter press tank, and is connected to the filtrate collector below through a hose.
The sludge plate and frame filter press simulation optimization device according to claim 1 is characterized in that the integrated display control system includes a visual information display system, a data acquisition module and a data storage module, wherein:

The data acquisition module is used to collect pressure data monitored by the sensor provided on the filter press disc and quality data monitored by the weighing system provided at the bottom of the filter press tank and the filtrate collector;

The visual information display system is used to display the data collected by the sensor and the weighing system in real time;

The data storage module is used to store the data collected by the data collection module.
The sludge plate-frame filter press simulation optimization device according to claim 9 is characterized in that the visual information display system comprises: a communication module, a control module, a monitoring module, an operation button module, a display screen drive module and a display screen, wherein:

The communication module is used to connect the data acquisition module and the data storage module;

The control module is used to retrieve the data results in the data storage module through the communication module and transmit the data to the monitoring module;

The monitoring module is used to receive data from the communication module, and to display the data collected from the filter press disc sensor and the weighing system on the display screen in real time through the display driving module;

The operation button module is used to control the switch of the integrated display control system and the start-up of the sludge plate and frame filter press simulation optimization device.
The method for using the sludge plate and frame filter press simulation optimization device according to any one of claims 1 to 10 is characterized by comprising the following steps:

(1) Mud preparation: First, take mud samples from the actual project, determine the moisture content of the mud by drying method, take an appropriate amount of mud and place it in a beaker, turn on the stirrer, add dehydrating agent while stirring, and the stirring and conditioning time is 3 to 5 minutes;

(2) Preparation for filter press: Place the mesh filter plate into the limiting ring, lay the multifilament filter cloth used for actual plate and frame filter press on the mesh filter plate, then place the anti-seepage rubber ring on the multifilament filter cloth and press it between the mesh filter plate and the inner wall of the filter press tank;

(3) Mud feeding: Pour the prepared mud into the filter press tank, adjust the filter press disc to the specified position to form a closed volume filter press chamber, and open the drain valve;

(4) Simulated pressing: Run the air compressor, start with low-pressure pressing, the low-pressure pressure is the same as the plate-frame filter press pressure value, and maintain it for 5 minutes, then start high-pressure pressing, the high-pressure pressure is twice the plate-frame filter press pressure value, and maintain it for 3 minutes;

(5) End of the test: After the filtration is completed, the system transmits a stop pressing command, and the filter press disc returns to its initial position; turn off the pressing power switch, remove the filter press tank, take out the mud cake and filter cloth, measure the moisture content of the mud cake, export the test monitoring data, and complete the test.