An adjustable pose filter press and a control method thereof

Abstract

The application discloses a filter press with adjustable position and a control method thereof, and the filter press comprises a pressing plate, a filter plate group and a first driving device, the first driving device is used for driving the pressing plate to be pressed to the filter plate group, a plurality of supporting mechanisms are arranged on the pressing plate, the supporting mechanisms can exert pressure on the filter plate group, and the supporting mechanisms can independently move relative to the pressing plate to adjust the pressure distribution of the filter plate group. Through the arrangement of the plurality of independently movable supporting mechanisms on the pressing plate and the cooperation of a pressure acquisition device and a control system, real-time monitoring and dynamic adjustment of the pressure distribution of different regions of the filter plate group are realized. On the one hand, when an abnormal working condition is detected, the local pressure can be quickly adjusted, and the normal working condition of the filter press is restored; on the other hand, a preset non-uniform pressure distribution can be actively exerted according to process requirements, and the filter pressing process is optimized.

Description

Technical Field

[0001] This invention relates to the field of filter press technology, and in particular to an adjustable position filter press and its control method. Background Technology

[0002] In electrodialysis, ion exchange membranes are typically housed in a plate and frame filter press. This mechanism relies primarily on the weight of the pressure plates and hydraulic cylinders to apply pressure, securing and compressing the membrane module. Ideally, the pressure should be neither too high, which would reduce flow rate, nor too low, which could lead to leakage and affect lithium-ion migration efficiency. However, due to the non-uniformity of liquid flow and the non-planar contact between the plates and frames (mainly due to membrane edge fixing and the presence of elastic sealing gaskets between the plates and frames), the pressure distribution between the membrane modules is often uneven. This uneven pressure can lead to incomplete sealing between the plates and frames, resulting in leakage problems. Summary of the Invention

[0003] The main objective of this invention is to provide an adjustable-position filter press and its control method to solve the problems of poor sealing and leakage caused by the passive and uneven pressure distribution during the filtration process of existing plate and frame filter presses.

[0004] The objective of this invention can be achieved by adopting the following technical solution:

[0005] An adjustable-position filter press includes: a pressure plate, a filter plate assembly, and a first driving device, wherein the first driving device is used to drive the pressure plate to press against the filter plate assembly;

[0006] Multiple support mechanisms are provided on the pressure plate. The support mechanisms can apply pressure to the filter plate assembly and can move independently relative to the pressure plate to adjust the pressure distribution on the filter plate assembly.

[0007] A pressure acquisition device, wherein the pressure acquisition device is used to acquire pressure data applied by the support mechanism to the filter plate assembly; and

[0008] A control system is connected to both the pressure acquisition device and the support mechanism. The control system is used to control the movement of the support mechanism based on the pressure data to adjust the pressure distribution on the filter plate assembly.

[0009] The filter press further includes a second driving device, which includes multiple driving mechanisms, each of which is connected to at least one of the supporting mechanisms and is used to drive the supporting mechanism to move relative to the pressure plate.

[0010] The pressure acquisition device includes multiple pressure sensors, each of which is disposed between a support mechanism and a filter plate assembly to detect the pressure applied by the support mechanism to the filter plate assembly and transmit the detected pressure data to the control system.

[0011] The supporting mechanism is a support column, which can slide relative to the pressure plate along the pressing direction.

[0012] The support column has a mounting hole at one end near the filter plate assembly. One end of the pressure sensor is inserted into the mounting hole and fixed thereto, while the other end is used to press against the filter plate assembly.

[0013] The filter press further includes a display component connected to the pressure acquisition device, the display component being used to display the pressure data.

[0014] The filter press further includes: a frame, on which a horizontal guide rail is provided; a pulley that slides with the horizontal guide rail on the pressure plate; and a support mechanism that is vertically connected to the side wall of the pressure plate and evenly distributed along the circumference of the pressure plate.

[0015] The control system includes a pressure analysis module and a pressure control module.

[0016] The pressure analysis module is used to receive pressure data transmitted by the pressure acquisition device and analyze the working status of the filter press based on the pressure data.

[0017] The pressure control module is used to control the movement of the support mechanism according to the working state to adjust the pressure distribution in the corresponding area of ​​the filter plate assembly until the target working state is reached.

[0018] A method for controlling a filter press includes the following steps:

[0019] Step 1: Drive the pressure plate to move towards the filter plate assembly until the support mechanism abuts against the filter plate assembly and applies an initial clamping force to it;

[0020] Step 2: Obtain the pressure data applied by the support mechanism to the filter plate assembly and transmit the pressure data to the control system;

[0021] Step 3: The control system analyzes the working status of the filter press based on the pressure data;

[0022] Step 4: Based on the analyzed working status, perform the corresponding pressure adjustment operations:

[0023] When the working state is abnormal, the control support mechanism moves relative to the pressure plate to adjust the pressure distribution in the corresponding area on the filter plate group until the filter press reaches the target working state.

[0024] When the working status is normal, determine whether pressure optimization adjustment is needed according to process requirements;

[0025] If pressure optimization adjustment is required, control the independent movement of each support mechanism to create a preset non-uniform pressure distribution on the filter plate assembly.

[0026] If no pressure optimization adjustment is required, return to step 2.

[0027] Beneficial technical effects of the present invention:

[0028] This invention achieves real-time monitoring and dynamic adjustment of pressure distribution in different areas of the filter press assembly by incorporating multiple independently movable support mechanisms on the pressure plate, along with a pressure acquisition device and control system. On one hand, when abnormal operating conditions are detected, local pressure can be quickly adjusted to restore the filter press to normal operation. On the other hand, a preset non-uniform pressure distribution can be actively applied according to process requirements to optimize the filtration process. Compared with traditional filter presses, this invention significantly improves the controllability of membrane pressure distribution and enhances the stability and reliability of the filtration process. Attached Figure Description

[0029] Figure 1 This is a front view schematic diagram of a filter press according to an embodiment of the present invention;

[0030] Figure 2 This is a front view schematic diagram of the support mechanism of the filter press according to an embodiment of the present invention;

[0031] Figure 3 This is a front view schematic diagram of the support mechanism according to another embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] In the diagram: 1-pressure plate, 10-sliding hole, 11-support mechanism, 1101-fixed cylinder, 1102-floating column, 1103-baffle, 111-mounting hole, 12-pressure sensor, 2-thrust plate, 3-filter plate assembly, 31-plate frame, 4-drive mechanism, 6-frame, 61-horizontal guide rail, 62-pulley. Detailed Implementation

[0034] To enable those skilled in the art to understand the technical solution of the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0035] like Figures 1-3As shown, the adjustable-position filter press provided in this embodiment includes: a pressure plate 1 and a thrust plate 2 spaced apart on the left and right, a plurality of filter plate groups 3 disposed between the pressure plate 1 and the thrust plate 2, and a first driving device for driving the pressure plate 1 to press against the filter plate groups 3. The first driving device includes a cooperating hydraulic station and a hydraulic cylinder (not shown in the figure), the hydraulic cylinder being used to drive the pressure plate 1.

[0036] The thrust plate 2 is fixedly set, and the pressure plate 1 can move towards the direction of the thrust plate 2 under the drive of the first drive device. In this way, the filter plate group 3 can be pressed tightly by the cooperation of the pressure plate 1 and the thrust plate 2.

[0037] Multiple support mechanisms 11 are provided on one side wall of the pressure plate 1 near the filter plate assembly 3. Each support mechanism 11 can move independently relative to the pressure plate 1 to adjust its pressure distribution on the filter plate assembly 3. The independent movement capability of the support mechanism 11 ensures that the pressure applied to the filter plate assembly 3 by each support mechanism 11 can be adjusted individually.

[0038] The support mechanism 11 is located between the pressure plate 1 and the adjacent filter plate group 3. When the pressure plate 1 approaches the filter plate group 3 under the drive of the first drive device, the support mechanism 11 will press against the filter plate group 3 and apply pressure to the filter plate group 3.

[0039] By controlling the movement of different support mechanisms 11, differentiated pressure can be applied to different areas of the filter plate assembly 3. This adjustment method can be flexibly set according to actual process requirements.

[0040] Applying differentiated pressure to different areas of the filter plate assembly 3 means that one support mechanism 11 corresponds to one area of ​​the filter plate assembly 3, or multiple support mechanisms 11 correspond to one area of ​​the filter plate assembly 3, and the extension and retraction strokes of the support mechanisms 11 in different areas are controlled respectively, thereby achieving the application of differentiated pressure to different areas of the filter plate assembly 3.

[0041] The filter press also includes a pressure acquisition device for real-time acquisition of the pressure data applied by each support mechanism 11 to the filter plate assembly 3. The pressure data obtained by the pressure acquisition device can reflect the pressure distribution experienced by the filter plate assembly 3 in the contact area with each support mechanism 11.

[0042] The filter press also includes a control system that is connected to the pressure acquisition device and the support mechanism 11 respectively.

[0043] The control system controls the movement of each support mechanism 11 relative to the pressure plate 1 based on the pressure data obtained by the pressure acquisition device, so as to adjust the pressure distribution on the filter plate group 3.

[0044] Based on the pressure data fed back by the pressure acquisition device, the control system can monitor the dynamic pressure distribution of each area of ​​the filter plate group 3 in real time, and can achieve uneven pressure on the filter plate group 3 by independently controlling the movement of each support mechanism 11.

[0045] In this embodiment, the filter plate assembly 3 includes alternating plate frames 31 and filter plates, with membranes (not shown) fixed on the filter plates. Multiple functional membranes are stacked to form a membrane assembly.

[0046] In this embodiment, the support mechanism 11 can adopt various structural forms, as long as it can achieve independent movement relative to the pressure plate 1.

[0047] In this embodiment, the support mechanism 11 is a support column, and multiple support columns are arranged in a rectangular array on the side wall of the pressure plate 1. The support column includes a floating part that can move horizontally relative to the pressure plate 1. The floating part does not specifically refer to the support column being able to float as a whole, but it also includes embodiments where the support column as a whole is floating.

[0048] In this embodiment, an implementation is given where the floating part is a component of the support column:

[0049] The support column includes a fixed cylinder 1101 and a floating column 1102 inserted inside the fixed cylinder 1101. The fixed cylinder 1101 is perpendicularly inserted through and fixed to the side wall of the pressure plate 1, and the opposite ends of the fixed cylinder 1101 are connected.

[0050] The floating column 1102 has a certain travel within the fixed cylinder 1101, allowing it to move horizontally. Here, the floating column 1102 is the floating part, which can move horizontally relative to the fixed cylinder 1101, that is, the floating part can move horizontally relative to the pressure plate 1.

[0051] In another embodiment, for a configuration where the support column is entirely a floating part:

[0052] The side wall of the pressure plate 1 has a through hole 10, and the support column slides through the through hole 10. Two baffles 1103 are provided on the support column at intervals, and the through hole 10 is located between the two baffles 1103, which can prevent the support column from detaching from the pressure plate 1 under external force.

[0053] The entire support column here is the floating part, meaning that the entire support column can move horizontally relative to the pressure plate 1.

[0054] In other embodiments, the support column may also adopt different structural forms to achieve its floating function relative to the pressure plate 1.

[0055] In this embodiment, the filter press further includes a second drive device 4. The control system is communicatively connected to the second drive device 4 and controls the movement of the support column through the second drive device 4. The second drive device 4 includes multiple independent drive mechanisms 4, which are hydraulic cylinders or oil cylinders.

[0056] In this embodiment, each support column is equipped with an independent drive mechanism 4, that is, one drive mechanism 4 is responsible for driving one support column.

[0057] Since each support column is driven by an independent drive mechanism 4, equal or different pressures can be applied to each support column as needed, thereby achieving differentiated pressure on different areas of the filter plate group 3.

[0058] The control system controls each drive mechanism 4 according to the pressure distribution, thereby individually adjusting the pressure applied by each support column to the area of ​​the filter plate assembly 3 it contacts. Here, one support column corresponds to one area of ​​the filter plate assembly 3.

[0059] In another embodiment, the multiple support columns can be divided into several adjustment zones, with each support column in each adjustment zone sharing a single drive mechanism 4. For example, two or three adjacent support mechanisms 11 can be grouped into one adjustment zone, or more support columns can be grouped into one adjustment zone based on the size and shape of the filter plate assembly 3.

[0060] The control system controls the corresponding drive mechanism 4 based on the average pressure value in each adjustment zone, and simultaneously adjusts the pressure of all support columns in that adjustment zone.

[0061] It should be noted that the partition control method of the support column on the pressure plate 1 can also have a variety of other variations and combinations. As long as it can achieve the function of applying differentiated pressure to different areas of the filter plate group 3, it falls within the protection scope of this invention.

[0062] In the above embodiment, the floating capability of the support column along the pressing direction ensures that the drive mechanism 4 can individually control the support column connected to it, allowing it to freely extend and retract within a certain range, so that each support column on the pressure plate 1 can apply just the right pressure.

[0063] In this embodiment, the pressure acquisition device includes multiple pressure sensors 12, each pressure sensor 12 being disposed between the support mechanism 11 and the plate frame 31 of the filter plate group 3. The pressure sensor 12 is communicatively connected to the control system and can transmit the detected pressure data to the control system in real time.

[0064] By arranging pressure sensors 12 between each support mechanism and the filter plate assembly 3, the control system can accurately obtain pressure data of each area of ​​the filter plate assembly 31 and monitor the dynamic pressure distribution of each area of ​​the filter plate assembly 31 in real time.

[0065] In this embodiment, the support mechanism 11 and the filter plate assembly 3 are arranged at intervals on the left and right. The right end face of the support mechanism 11 is provided with a mounting hole 111. One end of the pressure sensor 12 is inserted into the mounting hole 111 and fixed to the inside of the support mechanism 11, and the other end is used to abut against the plate frame 31 of the filter plate assembly 3.

[0066] Pressure sensor 12 is arranged on support mechanism 11 to measure the pressure exerted by support mechanism 11 on the plate frame 31 of filter plate assembly 3. This arrangement does not impose additional processing requirements on plate frame 31, and the obtained pressure data can intuitively reflect the working status of support mechanism 11, which is convenient for achieving closed-loop control.

[0067] In this embodiment, since each support mechanism 11 is connected to a drive mechanism 4 and is equipped with an independent pressure sensor 12, the pressure data applied by each support mechanism 11 to the plate frame 31 can be monitored in real time, which helps to adjust the output of the corresponding drive mechanism 4 in a targeted manner, thereby realizing independent control of the pressure on each area of ​​the plate frame 31.

[0068] This "one column, one drive, one sensor" arrangement, combined with a flexible control strategy, can take into account both the overall and local differences in the pressing process, and achieve dynamic optimization and control of the membrane pressure distribution.

[0069] In this embodiment, during the actual operation of the filter press, local pressure changes and deformations may occur in the plate and frame 31 and the membrane module due to factors such as liquid flow and membrane tension. The pressure data detected by the pressure sensor 12 can then be used to indicate abnormal operating conditions, such as excessively high / low local pressure or severely uneven pressure distribution.

[0070] Based on this, the control system judges the working status of the filter press. When an abnormal situation is detected, the pressure output of the corresponding support mechanism 11 can be adjusted so that it is no longer completely equal, but is driven independently and adjusted differently as needed, so as to restore the normal working status of the filter press and achieve the best working efficiency.

[0071] In this embodiment, the control system is connected to the second drive device 4 and the pressure sensor 12 via wired or wireless communication, respectively. The pressure sensors 12 on each support column are also communicatively connected to the display component, so that the pressure signals detected by the pressure sensors 12 can be converted and displayed on the display component for viewing by personnel.

[0072] In this embodiment, the filter press also includes a frame 6. The frame 6 is provided with a horizontal guide rail 61, and the front and rear ends of the pressure plate 1 are provided with pulleys 62 that slide in cooperation with the horizontal guide rail 61.

[0073] Multiple support mechanisms 11 are vertically connected to the right side wall of the pressure plate and are evenly distributed along the perimeter of the pressure plate 1. This arrangement can comprehensively compress the plate frame 31, achieving multi-point compression and targeted adjustment of various areas of the plate frame 31.

[0074] In this embodiment, the control system includes a pressure analysis module and a pressure control module.

[0075] The pressure analysis module receives pressure data transmitted from each pressure sensor 12 in real time and analyzes the working status of the filter press based on the pressure data; specifically including:

[0076] The current pressure data is compared with the preset standard pressure range to determine whether the current working status is abnormal.

[0077] If the local pressure exceeds the standard range, or the pressure difference between adjacent support mechanisms 11 exceeds the preset threshold, it is determined to be an abnormal working state.

[0078] If the pressure of each support mechanism 11 is within the standard range and the mutual deviation is within the allowable range, it is determined to be in normal working condition.

[0079] The pressure control module controls the movement of the support mechanism 11 according to the working state to adjust the pressure distribution in the corresponding area of ​​the filter plate assembly 3 until the target working state is reached; specifically including:

[0080] When an abnormal working state is determined, the support mechanism 11 of the corresponding area is controlled to extend and retract to adjust the clamping force between the area and the filter plate group 3 until the pressure data returns to normal.

[0081] When the system is determined to be in normal working condition, based on process requirements and preset pressure optimization rules, the system selectively and actively controls the independent adjustment of the movement of each support mechanism 11 to form a specific non-uniform pressure distribution on the filter plate assembly 3, so as to further improve the filtration effect.

[0082] In this embodiment, the pressure plate 1 is first driven by the first driving device to move towards the filter plate assembly 3. Each support column simultaneously presses against the filter plate assembly 3 and applies equal initial clamping force, causing the filter press to enter the constant pressure working mode. The goal of this stage is to achieve balanced clamping between each plate frame 31, avoiding poor initial sealing and leakage problems.

[0083] Based on the constant pressure mode, the pressure sensor 12 monitors the pressure value of each clamping point in real time and feeds it back to the control system. The control system then independently controls the output of each drive mechanism 4, so that each support mechanism 11 applies differentiated pressure to different areas of the filter plate assembly 3 that matches its working conditions, thereby achieving dynamic and targeted pressure distribution optimization and control.

[0084] In this embodiment, the control system obtains the pressure distribution of the filter plate group 3 frame 31 based on the pressure data transmitted by the pressure sensor 12. On the one hand, it can monitor the working status of the filter press in real time; on the other hand, by independently controlling each support mechanism 11, it can also actively realize uneven pressure on the plate frame and adjust the pressure distribution of the membrane group to the state most conducive to the electrodialysis process.

[0085] The pressure distribution includes the magnitude of the pressure at each support column and its position on the plate frame. These pressure data points reflect the overall pressure distribution across the plate frame.

[0086] In this embodiment, a control method for a filter press is also provided, the method comprising the following steps:

[0087] Step 1: Start the first drive device to move the pressure plate 1 towards the filter plate assembly 3 until the support mechanism 11 abuts against the frame of the filter plate assembly 3 and applies an initial clamping force. During this process, the pressure sensor 12 begins to detect the pressure applied by the support mechanism 11 to the filter plate assembly 3.

[0088] Step 2: Pressure sensor 12 continuously monitors the pressure data between support mechanism 11 and filter plate assembly 3, and transmits the pressure data to the control system in real time. The pressure data applied by each support mechanism 11 to filter plate assembly 3 is transmitted to the control system.

[0089] Step 3: The pressure analysis module of the control system receives the transmitted pressure data and analyzes whether the filter press's operating status is abnormal. Abnormal filter press status includes: whether the pressure data of the support mechanism exceeds the normal range, whether the pressure difference between adjacent support mechanisms is too large, etc.

[0090] The pressure analysis module of the control system receives the transmitted pressure data and analyzes whether the filter press is operating abnormally. Specifically, it compares the current pressure values ​​of each support mechanism with the preset standard pressure range one by one. If all are within a reasonable range, it can be preliminarily determined that the filter press is operating normally.

[0091] Further calculate the pressure difference between adjacent support mechanisms and compare it with a preset pressure deviation threshold. If the pressure difference is too large and exceeds the allowable deviation, it indicates that the filter plate assembly is under uneven stress, and the sealing performance may be problematic, which needs to be judged as an abnormal state.

[0092] Step 4: Based on the analyzed working status, perform the corresponding pressure adjustment operations:

[0093] When the working state is abnormal, the pressure control module of the control system controls the extension and retraction of the corresponding support mechanism 11 relative to the pressure plate 1 through the drive mechanism 4 of the abnormal area according to the pressure distribution, and actively adjusts the pressure distribution of the corresponding area on the filter plate group 3 until the filter press returns to normal working state.

[0094] When the filter press is running in normal operating condition for an extended period of time, the control system determines whether pressure optimization adjustment is needed based on process requirements.

[0095] If pressure optimization adjustment is required, according to the pre-set pressure optimization rules (which can be based on experience), the control system controls the independent movement of each support mechanism 11 to form a preset non-uniform pressure distribution on the filter plate group 3, thereby achieving active differentiated pressing to improve the efficiency of electrodialysis.

[0096] Because the fluid flow is uneven during actual electrodialysis, and the fixation of the membrane and the stacking of the plates and frames 31 are also asymmetrical and uniform, the optimal clamping force required at each point is not the same. By dynamically adjusting the pressure applied by each support mechanism 11 through the control system, this unevenness can be better adapted to, making the clamping force at each point more reasonable.

[0097] Furthermore, the efficiency of electrodialysis is influenced by a combination of factors, including flow rate, pressure, and the concentration difference between the two sides. The control system can dynamically optimize electrodialysis efficiency by applying differential compression based on pre-learned empirical data and the real-time status of the electrodialysis process. This is analogous to squeezing the tubing a few times to accelerate fluid flow when the fluid volume at the lower end of the infusion tube is insufficient. By applying appropriate local pressure to the fluid flow, its flow rate can be adjusted, thereby improving the filtration effect.

[0098] If no pressure optimization adjustment is required, the control process returns to step 2 to continue pressure data acquisition and analysis, thereby achieving closed-loop control.

[0099] Through the above steps, the compression control method can monitor the pressure status of the filter plate group 3 in real time during the operation of the filter press. Once an abnormality is detected, the movement of the support mechanism 11 can be adjusted independently to quickly respond and restore the normal working state, thereby improving the stability and reliability of the filtration process.

[0100] Meanwhile, this method can also actively control the support mechanism 11 to apply a preset non-uniform pressure distribution according to process requirements, thereby further optimizing the working performance of the filter press.

[0101] In this embodiment, an abnormal state refers to a situation where the actual working state of the filter press deviates from expectations, resulting in severely uneven pressure distribution, excessively high or low local pressure, leakage, or other conditions that affect normal operation. In such cases, timely adjustments are necessary to restore normal operation.

[0102] The target operating state refers to the ideal and optimal operating state of the filter press, where the pressure distribution in each area of ​​the filter plate assembly 3 is most reasonable, achieving the best filtration effect while ensuring good sealing. This is the goal of independent pressure control.

[0103] Pressure optimization adjustment is a process of applying non-uniform pressure to the filter plate assembly in a targeted manner based on process requirements, after the filter press is already in normal working condition, in order to further improve and optimize the filtration effect. For example, different clamping forces can be applied to different areas of the filter plate assembly 3 according to factors such as fluid characteristics to achieve better filtration results.

[0104] In this embodiment, when the working state is abnormal, it may also include:

[0105] Some support mechanisms 11 have reached the preset clamping position, but the corresponding pressure sensor 12 reading is too low. At this time, the control system determines that the clamping force in this area is insufficient, and controls the corresponding drive mechanism 4 to continue to advance the support mechanism 11 until the applied pressure reaches a reasonable range.

[0106] Some support mechanisms 11 have not reached the preset clamping position, but the corresponding pressure sensor 12 readings are already significantly high. At this time, the control system determines that the pressure in this area is too high, and controls the corresponding drive mechanism 4 to retract the support mechanism 11, reducing the applied pressure until the pressure reading returns to normal.

[0107] A certain support mechanism 11 has reached the set limit compression position, but the corresponding pressure sensor 12 reading is still too low. At this time, the support mechanism 11 should not continue to apply pressure, and the control system should issue an alarm prompting manual inspection of the filter plate assembly 3 for issues such as sealing or filter press installation.

[0108] In summary, in this embodiment, the filter press and its control method, by changing the original planar clamping of the pressure plate 1 to multi-point floating clamping and introducing a pressure acquisition device for real-time pressure monitoring, and in conjunction with the control system, realize the dynamic detection and control of the clamping pressure of the filter press. At the same time, by independently adjusting the clamping force of the support mechanism 11, the force distribution of the filter plate group 3 can also be adaptively adjusted, thus constructing an adaptive pressure analysis and control system, thereby realizing the dynamic optimization control of the pressure distribution of the filter plate group 3, which is conducive to improving and maintaining the working efficiency of the filter press.

[0109] The filter press provided in this embodiment employs multiple support mechanisms 11 arranged in a rectangular array on the pressure plate 1. By applying multi-point floating clamping force around the plate frame 31, the flatness of the plate frame 31 can be more effectively guaranteed, and its sealing performance can be improved. Compared with single planar clamping, this evenly distributed multi-point support method can make the clamping force more uniformly transmitted to the plate frame 1 and the membrane assembly on it.

[0110] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An adjustable-position filter press, characterized in that, include: The pressure plate (1), the filter plate group (3) and the first driving device are used to drive the pressure plate (1) to press against the filter plate group (3); Multiple support mechanisms (11) are provided on the pressure plate (1). The support mechanisms (11) can apply pressure to the filter plate group (3), and the support mechanisms (11) can move independently relative to the pressure plate (1) to adjust their pressure distribution on the filter plate group (3). The second driving device includes multiple independent driving mechanisms (4), each of the multiple driving mechanisms (4) corresponds to one of the multiple support mechanisms (11), and each driving mechanism (4) is used to drive one of the support mechanisms (11) corresponding to it to move relative to the pressure plate (1); A pressure acquisition device is used to acquire pressure data applied by the support mechanism (11) to the filter plate assembly (3); as well as The control system is connected to the pressure acquisition device and the support mechanism (11) respectively. The control system is used to control the movement of the support mechanism (11) based on the pressure data to adjust the pressure distribution on the filter plate group (3). The pressure acquisition device includes multiple pressure sensors (12), each of the support mechanisms (11) is equipped with an independent pressure sensor (12), and each pressure sensor (12) is located between its corresponding support mechanism (11) and the filter plate group (3) to detect the pressure applied by the support mechanism (11) to the filter plate group (3) and transmit the detected pressure data to the control system.

2. The adjustable position filter press according to claim 1, characterized in that, The support mechanism (11) is a support column, which can slide relative to the pressure plate (1) along the pressing direction.

3. The adjustable posture filter press according to claim 2, characterized in that, The support column has an installation hole (111) at one end near the filter plate assembly (3). One end of the pressure sensor (12) is inserted into the installation hole (111) and fixed thereto, and the other end is used to press against the filter plate assembly (3).

4. The adjustable posture filter press according to claim 1, characterized in that, The filter press further includes a display component connected to the pressure acquisition device, the display component being used to display the pressure data.

5. The adjustable-position filter press according to claim 1, characterized in that, The filter press further includes: a frame (6), a horizontal guide rail (61) on the frame (6), a pulley (62) on the pressure plate (1) that slides with the horizontal guide rail (61), and a support mechanism (11) that is vertically connected to the side wall of the pressure plate (1) and is evenly distributed along the perimeter of the pressure plate (1).

6. The adjustable posture filter press according to claim 1, characterized in that, The control system includes: a pressure analysis module and a pressure control module; The pressure analysis module is used to receive pressure data transmitted by the pressure acquisition device and analyze the working status of the filter press based on the pressure data. The pressure control module is used to control the movement of the support mechanism (11) according to the working state to adjust the pressure distribution in the corresponding area of ​​the filter plate group (3) until the target working state is reached.

7. A control method for a filter press, characterized in that, The filter press is an adjustable-position filter press according to any one of claims 1 to 6. The filter press includes multiple support mechanisms (11), multiple independent drive mechanisms (4), and multiple pressure sensors (12). The multiple drive mechanisms (4) correspond one-to-one with the multiple support mechanisms (11). Each support mechanism (11) is equipped with an independent pressure sensor (12). Each pressure sensor (12) is disposed between its corresponding support mechanism (11) and the filter plate group (3). The control method includes the following steps: Step 1: Drive the pressure plate (1) to move toward the filter plate assembly (3) until the support mechanism (11) abuts against the filter plate assembly (3) and applies an initial clamping force to it; Step 2: Continuously detect the pressure data between the corresponding support mechanism (11) and the filter plate group (3) through each pressure sensor (12), and transmit each pressure data to the control system; Step 3: The control system analyzes the working status of the filter press based on the pressure data; Step 4: Based on the analyzed working status, perform the corresponding pressure adjustment operations: When the working state is abnormal, the control system controls the drive mechanism (4) corresponding to the abnormal area according to the pressure distribution. The drive mechanism (4) drives the corresponding support mechanism (11) to move relative to the pressure plate (1) to adjust the pressure distribution of the corresponding area on the filter plate group (3) until the filter press reaches the target working state. When the working status is normal, determine whether pressure optimization adjustment is needed according to process requirements; If pressure optimization adjustment is required, the control system controls each of the drive mechanisms (4) to drive each support mechanism (11) to move independently, so that a preset non-uniform pressure distribution is formed on the filter plate group (3); If no pressure optimization adjustment is required, return to step 2.

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