Papermaking wastewater fine treatment device adopting multi-stage filtration technology

Abstract

The invention discloses a papermaking wastewater fine treatment device adopting a multi-stage filtering technology, and belongs to the field of papermaking wastewater treatment equipment.The papermaking wastewater fine treatment device comprises a first fixing frame and a second fixing frame, the first fixing frame is located above the second fixing frame, collecting boxes are fixedly installed at the two ends of the first fixing frame and the two ends of the second fixing frame, and a control panel is fixedly installed on the second fixing frame; the first fixing frame and the second fixing frame are each movably provided with an adjusting assembly. Data of internal interference factors and external interference factors during use of the processing device are collected, corresponding control signals are obtained, the operation process of the processing device is comprehensively and efficiently supervised in the use process, related evaluation signals are obtained, and corresponding early warning is sent to a supervision end according to the related evaluation signals. Accurate judgment and control over the use condition of the processing device are achieved, meanwhile, the working efficiency of the processing device is effectively improved, and the continuity of filtering work is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the field of papermaking wastewater treatment equipment, in particular to a papermaking wastewater fine treatment device using a multi-stage filtration technology. Background Art

[0002] Papermaking industrial wastewater refers to wastewater generated during the pulping and papermaking process, including pulping and cooking waste liquid, washing wastewater, bleaching wastewater and paper machine white water. Papermaking wastewater has complex composition and poor biodegradability. It is a difficult industrial wastewater to treat. Therefore, it must be filtered and treated when it is discharged.

[0003] However, during the use of the papermaking wastewater fine treatment device in the prior art, as time goes by, the filter plate in the treatment device will gradually become clogged and affect the wastewater filtering effect. In response to the above problem, Chinese patent CN2021109649099 discloses a papermaking industrial wastewater filtering treatment device, which is to set a scraping mechanism on the secondary filtering mechanism so that the paper scraps remaining after the second filtering mechanism and the first filtering mechanism filter the wastewater are cleaned, thereby preventing the paper scraps from easily adhering to the second filtering mechanism and the first filtering mechanism, causing the wastewater filtering efficiency to be reduced;

[0004] However, in actual use, it is difficult to fully scrape and clean the impurities in the filter holes. When processing in large quantities, impurities are still easy to accumulate in the filter holes and cause the filter plate to be blocked. At this time, if the machine is stopped to clean the filter plate, the processing efficiency will be reduced and the work continuity will be affected.

[0005] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a papermaking wastewater fine treatment device using a multi-stage filtration technology to solve the technical defects proposed by the background technology.

[0007] The object of the present invention can be achieved by the following technical scheme: a papermaking wastewater fine treatment device using multi-stage filtration technology comprises a fixing frame 1 and a fixing frame 2, the fixing frame 1 is located above the fixing frame 2, both ends of the fixing frame 1 and the fixing frame 2 are fixedly installed with a collection box, the fixing frame 2 is fixedly installed with a control panel, and the fixing frame 1 and the fixing frame 2 are movably installed with an adjustment component;

[0008] The adjustment component includes multiple connecting pipes, baffles and connecting rods. The baffles are fixedly connected to the connecting pipes, and the connecting pipes are fixedly connected to each other through connecting rods. Fixed frame one is fixedly connected to fixed frame two through connecting pipes, and partition plates are fixedly installed in fixed frame one and fixed frame two.

[0009] Preferably, the interior of the fixing frame 1 is divided into cavity 1 and cavity 2 by a partition plate, and the interior of the fixing frame 2 is divided into cavity 3 and cavity 4 by a partition plate;

[0010] Filter plates are movably installed in cavity one, cavity two, cavity three and cavity four, and cleaning pipes and collecting boxes are fixedly installed on both sides of fixing frame one and fixing frame two, and the cleaning pipe is located above the collecting box.

[0011] Preferably, a liquid inlet is provided at the top of the fixing frame 1 and the fixing frame 2, a liquid outlet is fixedly installed at the bottom of the fixing block 1 and the fixing frame 2, connecting pipes are movably installed at the liquid inlet and the liquid outlet, and sealing gaskets are fixedly installed on both sides of the filter plate, and the sealing gaskets are in contact with the inner walls of the fixing frame 1 and the fixing frame 2.

[0012] Preferably, rotating rods are fixedly installed at both ends of the filter plate, motors are fixedly installed on both sides of the fixing frame 1 and the fixing frame 2, the motor output end is fixedly connected to the rotating rod on one side of the filter plate, and the side of the filter plate away from the motor is movably connected to the partition plate through the rotating rod.

[0013] Preferably, slide grooves are provided at the liquid inlet and the liquid outlet, the baffle is movably installed in the slide groove, a scraper is fixedly installed on the baffle, the bottom of the scraper is in contact with the bottom of the fixing frame one and the fixing frame two, a slag discharge port is provided on one side of the collecting box, and the scraper is located at the slag discharge port.

[0014] Preferably, a hydraulic cylinder is fixedly mounted on a side of the second fixing frame away from the control panel, and an output end of the hydraulic cylinder is fixedly connected to the connecting rod.

[0015] Preferably, the control panel includes a comprehensive data collection unit, a work evaluation unit, a risk evaluation unit and an early warning control unit;

[0016] The comprehensive data acquisition unit is used to collect the internal interference factor data and the external interference factor data of the treatment device, the internal interference factor data includes the operation evaluation value and the treated water net value, and the external interference factor data includes the wastewater treatment risk value, and sends the external interference factor data and the internal interference factor data to the work evaluation unit;

[0017] After receiving the external interference factor data and the internal interference factor data, the work evaluation unit performs work evaluation on the data, generates a risk signal according to the evaluation result, and sends the obtained risk signal to the risk evaluation unit via a communication connection;

[0018] The risk assessment unit performs risk assessment after receiving the data from the working assessment unit, and generates a control signal according to the assessment result, sends the obtained control signal to the early warning control unit, and makes corresponding action instructions through the control component of the early warning control unit.

[0019] Preferably, the risk assessment unit analyzes the processing device as follows:

[0020] After obtaining the operation evaluation value and the net value of treated water of the treatment device in each sub-time period, the product value obtained after data normalization of the operation evaluation value and the net value of treated water is marked as the dynamic risk assessment coefficient, and then the dynamic risk assessment coefficient Pi of the equipment in each sub-time period is obtained. A rectangular coordinate system is established with the number of sub-times as the X-axis and the dynamic risk assessment coefficient Pi as the Y-axis, and a dynamic risk assessment coefficient curve is drawn by plotting points;

[0021] At the same time, a preset dynamic risk assessment coefficient threshold curve is drawn in the coordinate system, and the risk angle range value and risk difference value are obtained. The risk angle range value and risk difference value are compared and analyzed with the preset risk angle range value and preset risk difference value entered and stored internally, and a control signal is generated.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) The present invention uses a fixed frame 1, a fixed frame 2 and a connecting pipe. In the initial state, cavity 1 is connected with cavity 3 through the connecting pipe. Wastewater enters cavity 1 through the connecting pipe at the top of the fixed frame 1. After being roughly filtered by the filter plate in cavity 1, the wastewater is transported to cavity 3 through the connecting pipe and then finely filtered by the filter plate in cavity 3. When the filter plates in cavity 1 and cavity 3 are blocked and need to be cleaned, it is only necessary to move the connecting pipe to connect cavity 2 and cavity 4. Wastewater enters through cavity 2 and is coarsely filtered and finely filtered in turn. No shutdown is required, thereby ensuring working continuity.

[0024] (2) The present invention also uses a motor and a connecting pipe in coordination. After the moving pipe is switched, the scrapers in cavity one and cavity three move, and the collection box is connected to the inside of cavity one and cavity three. At this time, the motor is started to drive the filter plates in cavity one and cavity three to flip, and the clean water is transported to cavity one and cavity three by the cleaning pipe. Under the action of gravity, it hits the filter plate and backwashes the filter holes. Impurities fall under the flushing action and flow into the collection box. Similarly, when the filter plates in cavity two and cavity four need to be cleaned, the above steps can be repeated without disassembling the equipment, which greatly improves the processing efficiency.

[0025] (3) The present invention also acquires corresponding control signals by collecting data on internal and external interference factors during the use of the processing equipment, and performs comprehensive and efficient supervision on the operation process of the processing equipment during use, that is, comprehensively analyzing and comparing the collected data range with the preset data range, thereby obtaining relevant evaluation signals, and accordingly issuing corresponding warnings to the supervision end, while controlling the components to make compensatory actions, thereby realizing adaptive adjustment of the processing device and accurate judgment and control of the usage conditions, with a high degree of intelligence, and effectively improving the working efficiency of the processing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings;

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the regulating component in the present invention;

[0029] Figure 3 It is a structural schematic diagram of the fixing frame 2 in the present invention;

[0030] Figure 4 It is a structural schematic diagram of a fixing frame in the present invention;

[0031] Figure 5 is a system block diagram of the present invention;

[0032] Figure 6 is a cross-sectional view of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the filter plate in the present invention;

[0034] Figure 8 It is a structural schematic diagram of the baffle in the present invention.

[0035] Legend: 1. Fixed frame one; 101. Liquid inlet; 102. Liquid outlet; 103. Partition plate; 104. Cavity one; 105. Cavity two; 106. Cavity three; 107. Cavity four; 108. Cleaning pipe; 2. Fixed frame two; 3. Collecting box; 4. Control panel; 5. Adjustment assembly; 501. Connecting pipe; 502. Baffle; 503. Connecting rod; 504. Filter plate; 505. Rotating rod; 506. Scraper; 507. Slag discharge port. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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 protection of the present invention.

[0037] Example 1: Please refer to Figure 1 - Figure 5 As shown, this embodiment is a papermaking wastewater fine treatment device using a multi-stage filtration technology, including a fixed frame 1 and a fixed frame 2, the fixed frame 1 is located above the fixed frame 2, both ends of the fixed frame 1 and the fixed frame 2 are fixedly installed with a collecting box 3, the fixed frame 2 is fixedly installed with a control panel 4, and the fixed frame 1 and the fixed frame 2 are movably installed with an adjustment component 5.

[0038] The regulating assembly 5 includes a connecting pipe 501, a baffle 502 and a connecting rod 503. A plurality of connecting pipes 501 are provided, and the connecting pipes 501 are fixedly connected to each other through the connecting rod 503. The fixing frame 1 is fixedly connected to the fixing frame 2 through the connecting pipe 501. The tops of the fixing frame 1 and the fixing frame 2 are both provided with a liquid inlet 101. The bottoms of the fixing block 1 and the fixing frame 2 are both fixedly installed with a liquid outlet 102. The liquid inlet 101 at the top of the fixing frame 1 is used for waste liquid to enter, and the liquid outlet 102 at the bottom of the fixing frame 1 is used to connect to the liquid inlet 101 at the top of the fixing frame 2 through the connecting pipe 501, and the liquid outlet 102 at the bottom of the fixing frame 2 is used for outputting filtered liquid.

[0039] The liquid inlet 101 and the liquid outlet 102 are both movably installed with a connecting pipe 501, and the baffle 502 is fixedly connected to the connecting pipe 501. The baffle 502 is used to close the other side when the single-sided liquid inlet 101 or the single-sided liquid outlet 102 is opened. The liquid inlet 101 and the liquid outlet 102 are both provided with multiple, and the fixed frame 1 and the fixed frame 2 are both fixedly installed with a partition plate 103. The interior of the fixed frame 1 is divided into a cavity 104 and a cavity 2 105 by the partition plate 103, and the interior of the fixed frame 2 is divided into a cavity 3 106 and a cavity 4 107 by the partition plate 103. A hydraulic cylinder is fixedly installed on the side of the fixed frame 2 away from the control panel 4, and the output end of the hydraulic cylinder is fixedly connected to the connecting rod 503. When the position of the connecting pipe 501 is adjusted, the hydraulic cylinder is started to push the connecting rod 503 to move, thereby driving the connecting pipe 501 to move.

[0040] In the initial state, cavity one 104 is connected with cavity three 106 through connecting pipe 501, and wastewater enters cavity one 104 through connecting pipe 501 on the top of fixed frame one 1. After being coarsely filtered by filter plate 504 in cavity one 104, wastewater is transported to cavity three 106 through connecting pipe 501, and then finely filtered by filter plate 504 in cavity three 106. When filter plates 504 in cavity one 104 and cavity three 106 are blocked and need to be cleaned, it is only necessary to move connecting pipe 501 to connect cavity two 105 and cavity four 107, and wastewater enters through cavity two 105 for coarse filtration and fine filtration in turn, without stopping the machine for processing, thereby ensuring the continuity of work.

[0041] The control panel 4 includes a comprehensive data collection unit, a work evaluation unit, a risk evaluation unit and a control unit;

[0042] The comprehensive data acquisition unit acquires the internal interference factor data and the external interference factor data of the processing device, and sends the internal interference factor data and the external interference factor data to the work evaluation unit respectively;

[0043] Internal interference factor data include operation assessment value and treated water net value, while external interference factor data include wastewater treatment risk value.

[0044] After receiving the internal interference factor data and the external interference factor data, the work evaluation unit immediately performs risk evaluation and analysis operations on the internal interference factor data and the external interference factor data of the processing device. The specific steps are as follows:

[0045] Obtaining an operation evaluation value of the processing device in each sub-time period, the operation evaluation value represents the portion of the product value obtained after normalization of the operation parameter in the sub-time period that exceeds the stored preset threshold value, and the operation parameter represents the processing speed value;

[0046] The processing speed value is obtained by collecting data through a liquid flow meter fixedly installed inside the connecting pipe 501. The processing speed value indicates the speed at which wastewater flows from the fixed rack 1 to the fixed rack 2 2 during the use of the processing device, that is, the timing starts when the wastewater enters the fixed rack 1 from the top connecting pipe 501 of the fixed rack 1, and stops when the wastewater reaches the top connecting pipe 501 of the fixed rack 2, and the collected time result is assigned the symbol T1; the timing starts when the wastewater enters the fixed rack 2 from the top connecting pipe 501 of the fixed rack 2, and stops when the wastewater is discharged from the bottom connecting pipe 501 of the fixed rack 2, and the collected time result is assigned the symbol T2, wherein the larger the values ​​of T1 and T2 are, the slower the speeds of the fixed racks 1 and 2 in processing wastewater are, and the processing speed value To is obtained by the formula To=T1+T2.

[0047] During the operation of the processing device, a dynamic change curve is drawn with time as the X-axis and To of the adjacent sub-time period as the Y-axis, and a preset dynamic change threshold curve is drawn in the coordinate system, and the difference between the interval difference of the dynamic risk change line above the preset dynamic change threshold line is obtained, and the difference is assigned symbols X1, X2 and X3, etc., and according to the formula Obtain the operation evaluation value Yo, where A1, A2, and X3 are the differences of the interval differences under different horizontal coordinates, Wo is the preset proportional coefficient, Wo>0, and Yo is the operation evaluation value;

[0048] Obtaining a net value of treated water of the treatment device in each sub-time period, the net value of treated water indicating the number of times that the value corresponding to the characteristic data of the treatment device in the sub-time period exceeds the preset threshold, the characteristic data indicating the change value of the impurity concentration and the change value of the liquid volume of the treatment device in the sub-time period;

[0049] The impurity concentration change value is collected by multiple turbidity sensors fixedly installed in fixed frame 1 and fixed frame 2. The impurity concentration change value represents the difference between the initial turbidity of the wastewater and the turbidity of the wastewater after being treated by fixed frame 1 and fixed frame 2 during the operation of the treatment device. The larger the value, the better the filtering treatment effect of the wastewater during the use of the treatment device.

[0050] The liquid volume change value is collected by a flow meter fixedly installed inside the connecting pipe 501, and the value represents the difference between the wastewater input and output in the sub-time. The larger the value, the lower the wastewater treatment efficiency, and also the larger the amount of wastewater remaining in the treatment device in the sub-time.

[0051] After collecting the impurity concentration change value Gi and liquid volume change value Qi within the sub-time period, the formula Obtaining the net value of treated water Vo, wherein a, b and Li are preset proportional coefficients respectively, a, b, Li>0, Vo is represented as the net value of treated water;

[0052] The operation evaluation value and net value of treated water of the treatment device in each sub-time period are obtained, and the formula Then, the dynamic risk assessment coefficient Pi of the equipment in each sub-time period is obtained, where z1 and z2 are preset proportional coefficients, and z1 and z2>0. A rectangular coordinate system is established with the number of sub-times as the X-axis and the dynamic risk assessment coefficient Pi as the Y-axis, and a dynamic risk assessment coefficient curve is drawn by plotting points.

[0053] At the same time, a preset dynamic risk assessment coefficient threshold curve is drawn in the coordinate system, and the risk angle range value and risk difference value are obtained, and the risk angle range value and risk difference value are compared and analyzed with the preset risk angle range value and preset risk difference value entered and stored internally. The specific process is as follows:

[0054] If the risk angle range value is less than the preset risk angle range value, and the risk difference value is less than the preset risk difference value, no signal is generated; if the risk angle range value is greater than or equal to the preset angle range value, and the risk difference value is greater than or equal to the preset risk difference value, a control signal is generated;

[0055] The obtained control signal is transmitted to the early warning control unit, and the early warning control unit analyzes the processing device as follows:

[0056] After obtaining the control signal of the processing device in each sub-time period, immediately mark the risk mark on the equipment display of the processing device corresponding to the control signal, flash the warning red light, and make the hydraulic cylinder work at the same time, specifically:

[0057] When the control signal is generated, it means that an abnormality occurs in cavity 104 and cavity 3 106 or cavity 2 105 and cavity 4 107, such as blockage of filter plate 504. At this time, the connecting pipe 501 is driven to move by the hydraulic cylinder to change the working chamber to ensure that the subsequent wastewater can be filtered smoothly. At the same time, the two groups of working chambers do not interfere with each other, which is convenient for maintenance and ensures the continuity of work. By collecting data on internal and external interference factors during operation, corresponding control signals are obtained, and the operation process of the processing equipment is comprehensively and efficiently supervised during use, that is, the collected data range is comprehensively analyzed and compared with the preset data range, so as to obtain relevant evaluation signals, and accordingly send corresponding warnings to the supervision end, and at the same time, the control components make compensatory actions to effectively improve the working efficiency of the processing device.

[0058] Example 2: Please refer to Figure 6 - Figure 8 As shown, the present invention further includes a filter plate group, wherein filter plates 504 are movably installed in cavity 104, cavity 2 105, cavity 3 106 and cavity 4 107, and sealing gaskets are fixedly installed on both sides of the filter plate 504, and the sealing gaskets are in contact with the inner walls of the fixing frame 1 and the fixing frame 2, wherein the sealing gaskets are made of a material capable of elastic deformation, such as rubber, etc.;

[0059] When the filter plate 504 is working, the sealing gasket layer fits against the inner wall to ensure the sealing. When the filter plate 504 rotates, it is squeezed and deformed to avoid affecting the rotation of the filter plate 504. Rotating rods 505 are fixedly installed at both ends of the filter plate 504. The output end of the motor is fixedly connected to the rotating rod 505 on one side of the filter plate 504. The side of the filter plate 504 away from the motor is movably connected to the partition plate 103 through the rotating rod 505.

[0060] A slide groove is provided at the liquid inlet 101 and the liquid outlet 102, and a baffle 502 is movably installed in the slide groove. A scraper 506 is fixedly installed on the baffle 502, and the bottom of the scraper 506 is in contact with the bottom of the fixing frame 1 and the fixing frame 2. A slag discharge port 507 is provided on one side of the collecting box 3, and the scraper 506 is located at the slag discharge port 507. A sealing strip is fixedly installed at the slag discharge port 507. When the scraper 506 is located at the slag discharge port 507, the sealing strip is in contact with the scraper 506 to ensure the sealing.

[0061] The motor is fixedly connected to the fixing frame 1 and the fixing frame 2, the filter plate 504 is movably installed inside the fixing frame 1 and the fixing frame 2, and a cleaning pipe 108 and a collecting box 3 are fixedly installed on both sides of the fixing frame 1 and the fixing frame 2, and the cleaning pipe 108 is located above the collecting box 3, wherein the cleaning pipe 108 is fixedly installed in the cavity 1 104, the cavity 2 105, the cavity 3 106 and the cavity 4 107 for transporting clean water to the inside, and the cleaning pipe 108 is located above the filter plate 504.

[0062] After the moving pipe is switched, the scraper 506 in cavity one 104 and cavity three 106 moves, and the collecting box 3 is connected with the inside of cavity one 104 and cavity three 106. At this time, the motor is started to drive the filter plate 504 in cavity one 104 and cavity three 106 to flip, and the clean water is transported to cavity one 104 and cavity three 106 by the cleaning pipe 108, and hits the filter plate 504 under the action of gravity, and the filter holes are backwashed and cleaned. Under the flushing action, impurities fall and flow into the collecting box 3. Similarly, when the filter plate 504 in cavity two 105 and cavity four 107 needs to be cleaned, the above steps can be repeated without disassembling the equipment, which greatly improves the processing efficiency.

[0063] And when the moving tube moves toward the direction of cavity two 105, the scraper 506 in cavity one 104 and cavity three 106 is separated from the slag discharge port 507, and the scraper 506 in cavity two 105 and cavity four 107 gradually moves to the slag discharge port 507. During the movement of the scraper 506, the impurities in cavity two and cavity four 107 that have not flowed into the collection box 3 are pushed into the collection box 3, thereby improving the cleaning effect.

[0064] In summary, in combination with the first embodiment and the second embodiment, the corresponding control signal is obtained by collecting the data of the internal interference factors and the external interference factors during the use of the processing device, and the operation process of the processing device is comprehensively and efficiently supervised during use, that is, the collected data range is comprehensively analyzed and compared with the preset data range, so as to obtain the relevant evaluation signal, and accordingly send the corresponding warning to the supervision end, so as to realize the accurate judgment and control of the use of the processing device;

[0065] At the same time, the working efficiency of the processing device is effectively improved by using the fixed frame 1, the fixed frame 2 and the connecting pipe 501 in coordination to achieve the cleaning of the internal filter plate 504, which is more efficient and effectively improves the internal filtering efficiency. The working chamber is replaced by adjusting the position of the connecting pipe 501 through the coordinated use of the motor and the connecting pipe 501 to avoid affecting the continuity of the filtering work.

[0066] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A papermaking wastewater fine treatment device using multi-stage filtration technology, comprising a fixing frame 1 (1) and a fixing frame 2 (2), characterized in that: Collection boxes (3) are fixedly mounted on both ends of the fixing frame 1 (1) and the fixing frame 2 (2), a control panel (4) is fixedly mounted on the fixing frame 2 (2), and adjustment components (5) are movably mounted on both the fixing frame 1 (1) and the fixing frame 2 (2); The regulating assembly (5) comprises a plurality of connecting tubes (501), baffles (502) and connecting rods (503); the baffles (502) are fixedly connected to the connecting tubes (501); the connecting tubes (501) are fixedly connected to each other via connecting rods (503); the fixing frame 1 (1) is fixedly connected to the fixing frame 2 (2) via the connecting tubes (501); and a partition plate (103) is fixedly installed in both the fixing frame 1 (1) and the fixing frame 2 (2).

2. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 1 is characterized in that: The interior of the fixing frame 1 (1) is divided into a cavity 1 (104) and a cavity 2 (105) by a dividing plate (103), and the interior of the fixing frame 2 (2) is divided into a cavity 3 (106) and a cavity 4 (107) by a dividing plate (103); Filter plates (504) are movably installed in the cavity one (104), cavity two (105), cavity three (106) and cavity four (107), and cleaning pipes (108) are fixedly installed on both sides of the fixing frame one (1) and the fixing frame two (2).

3. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 2 is characterized in that: The tops of the fixing frame 1 (1) and the fixing frame 2 (2) are both provided with a liquid inlet (101), the bottoms of the fixing frame 1 and the fixing frame 2 (2) are both fixedly installed with a liquid outlet (102), the liquid inlet (101) and the liquid outlet (102) are both movably installed with a connecting pipe (501), and sealing gasket layers are fixedly installed on both sides of the filter plate (504), and the sealing gasket layers are in contact with the inner walls of the fixing frame 1 (1) and the fixing frame 2 (2).

4. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 3 is characterized in that: Rotating rods (505) are fixedly mounted on both ends of the filter plate (504), motors are fixedly mounted on both sides of the fixing frame 1 (1) and the fixing frame 2 (2), the output end of the motor is fixedly connected to the rotating rod (505) on one side of the filter plate (504), and the side of the filter plate (504) away from the motor is movably connected to the partition plate (103) via the rotating rod (505).

5. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 4 is characterized in that: The liquid inlet (101) and the liquid outlet (102) are both provided with slide grooves, the baffle (502) is movably mounted in the slide grooves, a scraper (506) is fixedly mounted on the baffle (502), the bottom of the scraper (506) is in contact with the bottom of the first fixing frame (1) and the second fixing frame (2), a slag discharge port (507) is provided on one side of the collection box (3), and the scraper (506) is located at the slag discharge port (507).

6. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 1 is characterized in that: A hydraulic cylinder is fixedly mounted on the side of the second fixing frame (2) away from the control panel (4), and the output end of the hydraulic cylinder is fixedly connected to the connecting rod (503).

7. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 6 is characterized in that: The control panel (4) includes a comprehensive data collection unit, a work evaluation unit, a risk evaluation unit and an early warning control unit; The comprehensive data acquisition unit is used to collect the internal interference factor data and the external interference factor data of the treatment device, the internal interference factor data includes the operation evaluation value and the treated water net value, and the external interference factor data includes the wastewater treatment risk value, and sends the external interference factor data and the internal interference factor data to the work evaluation unit; After receiving the external interference factor data and the internal interference factor data, the work evaluation unit performs work evaluation on the data, generates a risk signal according to the evaluation result, and sends the obtained risk signal to the risk evaluation unit via a communication connection; The risk assessment unit performs risk assessment after receiving the data from the working assessment unit, and generates a control signal according to the assessment result, sends the obtained control signal to the early warning control unit, and makes corresponding action instructions through the control component of the early warning control unit.

8. The papermaking wastewater fine treatment device using multi-stage filtration technology according to claim 7 is characterized in that: The risk assessment unit analyzes the processing device as follows: After obtaining the operation evaluation value and the net value of treated water of the treatment device in each sub-time period, the product value obtained after data normalization of the operation evaluation value and the net value of treated water is marked as the dynamic risk assessment coefficient, and then the dynamic risk assessment coefficient Pi of the equipment in each sub-time period is obtained. A rectangular coordinate system is established with the number of sub-times as the X-axis and the dynamic risk assessment coefficient Pi as the Y-axis, and a dynamic risk assessment coefficient curve is drawn by plotting points; At the same time, a preset dynamic risk assessment coefficient threshold curve is drawn in the coordinate system, and the risk angle range value and risk difference value are obtained. The risk angle range value and risk difference value are compared and analyzed with the preset risk angle range value and preset risk difference value entered and stored internally, and a control signal is generated.

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