Paper pulp filter
By using multiple sets of tube filters and mixing reaction units in the pulp filter, combined with intelligent control units, the problems of low efficiency and blockage of traditional filters are solved, efficient filtration and stable stirring are achieved, and pulp quality and production efficiency are improved.
Patent Information
- Application Number
- CN202510584347.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-06-20
AI Technical Summary
Traditional pulp filters have low filtration efficiency. Once blocked, they need to be shut down to clean, which affects production efficiency and pulp quality. The mixing time of good pulp after cleaning is too long, and the concentration of the agent is too high, making it difficult to control.
Multiple groups of tube filter parts and mixing reaction units are adopted, and the control unit intelligently controls the opening and closing of the filter parts and the mixing power of the mixing reaction units, realizing automatic switching and dynamic adjustment.
Improves filtration efficiency, reduces downtime and cleansing time, ensures the quality of pulp and the quality of the final product, and avoids the problem of excessive drug concentration.
Smart Images
Figure CN120174653A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of paper production, and specifically to a pulp filter. Background Art
[0002] A pulp filter is a device that separates impurities in pulp, such as fiber bundles, gravel, metal chips, etc., from pulp fibers through a specific filter medium. Its principle is based on the physical interception of the filter medium. When the pulp containing impurities passes through the filter, the impurities are blocked by the filter medium and remain on the surface of the filter medium, while the pure pulp flows out through the filter medium.
[0003] Traditional pulp filters use a single filtration method, with low filtration efficiency. Once blocked, it is necessary to stop the machine for cleaning, which affects production efficiency and pulp quality. When mixing and processing the good pulp after cleaning, due to the blockage of the filter element, the amount of slurry entering the mixing and processing part becomes less, while the stirring efficiency of the mixing and processing part remains unchanged, resulting in too long stirring time of the slurry, affecting the quality of the final product. Since the amount of chemical agent added remains unchanged, the concentration of the chemical agent in the unit slurry becomes higher, leading to too violent reaction of the slurry, which is difficult to control, and there are limitations.
[0004] The reason for this problem is that the existing filtration method has low filtration efficiency when dealing with pulp, and it is difficult to meet the requirements of high - efficiency production. Once blockage occurs, it is necessary to immediately stop the machine for cleaning work, which not only increases the maintenance cost and time, but also seriously affects the continuity and production efficiency of the production line. After the filter is blocked, when mixing and processing the good pulp cleaned out, due to the blockage of the filter element, the amount of slurry entering the mixing and processing part decreases significantly. However, the stirring efficiency of the mixing and processing part does not decrease accordingly and still maintains the original rotation speed and stirring force. This leads to a relatively longer residence time of the slurry in the mixing and processing part, and the stirring process becomes too thorough, and the slurry is over - stirred, damaging its original fiber structure, thus affecting the quality of the final product. The amount of chemical agent added remains unchanged, making the concentration of the chemical agent too high. The high - concentration chemical agent makes the reaction of the slurry too violent and difficult to control. Therefore, we propose a pulp filter to solve the above problems. Summary of the Invention
[0005] In view of the deficiencies of the prior art, the present invention provides a pulp filter, which solves the problems of the traditional pulp filter adopting a single filtration method, with low filtration efficiency. Once it becomes blocked, it is necessary to stop the machine for cleaning, which affects the production efficiency and pulp quality. When mixing and processing the good pulp after cleaning, due to the blockage of the filter element, the amount of slurry entering the mixing and processing part becomes less, while the stirring efficiency of the mixing and processing part remains unchanged, resulting in too long stirring time of the slurry, affecting the quality of the final product. Since the amount of chemical agent added remains unchanged, the concentration of the chemical agent in the unit slurry becomes higher, resulting in too violent reaction of the slurry, which is difficult to control and has limitations.
[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A pulp filter includes a body, which is assembled by splicing a first tank body and a second tank body. A plurality of tubular filter elements for filtering pulp are arranged between the first tank body and the second tank body. A mixing and reaction unit is arranged inside the second tank body, and the mixing and reaction unit includes a layered sieve plate, a chemical agent spraying part, and a stirring and mixing part. The layered sieve plates are vertically arranged in an array inside the second tank body, and the layered sieve plates divide the interior of the second tank body into several connected reaction zones; the chemical agent spraying part is arranged inside the reaction zone and is used for evenly spraying chemicals on the reaction zone; the stirring and mixing part is arranged inside the layered sieve plate and is used for evenly mixing the pulp after spraying the chemicals. A control unit is arranged on the body, and the control unit includes a controller, a first detector, a second detector, and a processor. The control unit controls the opening and closing of different tubular filter elements through the controller. The first detector and the second detector respectively detect the blockage and opening and closing states of the tubular filter elements. The processor controls the mixing power of the mixing and reaction unit according to the opening and closing states of the tubular filter elements.
[0007] Preferably, a feed inlet is arranged at the upper end of the first tank body, a good pulp discharge outlet is arranged at the lower end of the first tank body, a conical hopper is arranged inside the first tank body, and an impurity discharge outlet is arranged below the conical hopper.
[0008] Preferably, the tubular filter element includes a first filter tube and a second filter tube; The second filter tube is arranged below the first filter tube, the first filter tube is communicated with the second filter tube, the first filter tube and the second filter tube are a group, and multiple groups of the first filter tubes and the second filter tubes are vertically arranged in an array. Filters are arranged inside the first filter tube and the second filter tube.
[0009] Preferably, a support plate is arranged between the first tank body and the second tank body. The support plate is fixedly assembled with the tubular filter element, and a lifting ring is fixedly assembled on the support plate.
[0010] Preferably, a feed pipe is provided on one side of the first tank body, the feed pipe communicates with the first filter pipe, the end of the second filter pipe is connected with a material conveying pipe, and the other end of the material conveying pipe communicates with the second tank body.
[0011] Preferably, the chemical spraying member includes an upper layer spraying pipe, a middle layer spraying pipe and a bottom layer spraying pipe; The upper layer spraying pipe is arranged at the upper end inside the second tank body; the middle layer spraying pipe is arranged in the middle of the second tank body; the bottom layer spraying pipe is arranged at the lower part inside the second tank body.
[0012] Preferably, the chemical spraying member further includes a spray head and a liquid medicine feeding pipe; The spray head is arranged below the upper layer spraying pipe, the middle layer spraying pipe and the bottom layer spraying pipe, and the spray heads are distributed in an annular array; the liquid medicine feeding pipe is arranged on one side of the upper layer spraying pipe, the middle layer spraying pipe and the bottom layer spraying pipe, and the liquid medicine feeding pipe is used for conveying the liquid medicine into the inside of the spraying pipe.
[0013] Preferably, the stirring and mixing member includes a servo motor, a rotating shaft and an anchor type stirring paddle; The servo motor is fixedly assembled at the bottom of the second tank body; the rotating shaft is arranged inside the second tank body, the output shaft of the servo motor is fixedly assembled with the rotating shaft, and the rotating shaft is rotatably connected with the layered sieve plate; the anchor type stirring paddle is arranged on the rotating shaft, and the anchor type stirring paddles are arranged in a vertical array.
[0014] Preferably, a discharge pipe is provided at the bottom of the second tank body, the discharge pipe is used for discharging the reacted pulp, and a water outlet is provided on one side of the discharge pipe, and the water outlet is used for discharging the excess water.
[0015] Preferably, a temperature control unit is arranged on the inner wall of the second tank body, and the temperature control unit includes a conduit, a water inlet pipe and a drain pipe; The outer surface of the conduit is closely attached to the inner wall of the second tank body, and is used for heating and cooling the pulp inside the second tank body; the water inlet pipe is arranged at one end of the conduit and is used for conveying water into the inside of the conduit; the drain pipe is arranged at the other end of the conduit and is used for discharging the water that has transferred energy.
[0016] The present invention discloses a pulp filter, and the beneficial effects thereof are as follows: 1. The pulp filter of the present invention uses multiple groups of tubular filter members for filtration. Compared with the traditional single filtration method, the filtration efficiency is improved, meeting the requirements of high-efficiency production. The opening and closing of the tubular filter members are intelligently controlled by the control unit. When a certain filter member is blocked, it can automatically switch to other filter members to continue working, reducing the downtime for cleaning and improving the continuity of the production line.
[0017] 2. The device adjusts the mixing and reaction efficiency of the mixing and reaction unit according to the opening and closing state of the tubular filter element through the control unit, avoiding the problems of too long slurry stirring time and too high chemical concentration caused by filter element blockage, thus ensuring the quality of the final product.
[0018] 3. The setting of the mixing and reaction unit in the device enables the good pulp to be immediately and evenly mixed and reacted after filtration. The layered sieve plate divides the interior of the second tank into several connected reaction zones. The chemical spraying member evenly sprays chemicals on the reaction zones, and the stirring and mixing member evenly mixes the pulp after the chemicals are sprayed, ensuring the quality of the slurry and the reaction effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the side structure of the present invention; Figure 3 It is a schematic diagram of the back structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of the device of the present invention; Figure 5 It is a schematic diagram of the internal structure of the second tank of the present invention; Figure 6 It is a schematic diagram of the structure of the stirring and mixing member of the present invention; Figure 7 It is a schematic diagram of the structure of the temperature control unit of the present invention; Figure 8 It is a schematic diagram of the judgment principle of the control unit of the present invention.
[0021] In the figure: 1. Body; 11. First tank; 111. Feed inlet; 112. Conical hopper; 113. Good pulp discharge port; 114. Impurity discharge port; 12. Second tank; 13. Tube filter element; 131. First filter tube; 132. Second filter tube; 14. Support plate; 15. Lifting ring; 16. Guide pipe; 17. Feed pipe; 2. Mixing and reaction unit; 21. Stratified sieve plate; 22. Chemical spraying part; 221. Upper spraying pipe; 222. Middle spraying pipe; 223. Lower spraying pipe; 224. Nozzle; 225. Liquid medicine feed pipe; 23. Stirring and mixing part; 231. Servo motor; 232. Rotating shaft; 233. Anchor type stirring paddle; 24. Discharge pipe; 25. Temperature control unit; 251. Duct; 252. Water inlet pipe; 253. Drain pipe. Detailed implementation mode
[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.
[0023] By providing a pulp filter in the embodiments of the present application, the problems of the traditional pulp filter are solved. The traditional pulp filter adopts a single filtering method, with low filtering efficiency. Once it gets blocked, it needs to stop for cleaning, which affects the production efficiency and pulp quality. When mixing and processing the good pulp after cleaning, since the filter element is blocked, the amount of slurry entering the mixing and processing part becomes less, while the stirring efficiency of the mixing and processing part remains unchanged, resulting in too long stirring time of the slurry, affecting the quality of the final product. Since the amount of chemical agent added remains unchanged, the concentration of the chemical agent in the unit slurry becomes higher, leading to too violent slurry reaction and being difficult to control, having limitations.
[0024] To better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the accompanying drawings of the specification and specific implementation modes.
[0025] The embodiments of the present invention disclose a pulp filter.
[0026] Embodiment 1: The embodiments of the present invention disclose a pulp filter. According to the attached Figure 1-4 As shown, it includes a body 1, which is spliced and combined by a first tank 11 and a second tank 12. A plurality of tube filter elements 13 for filtering pulp are arranged between the first tank 11 and the second tank 12. A mixing and reaction unit 2 is arranged inside the second tank 12, and the mixing and reaction unit 2 includes a stratified sieve plate 21, a chemical spraying part 22 and a stirring and mixing part 23; The layered sieve plate 21 is vertically arranged inside the second tank body 12. The layered sieve plate 21 divides the interior of the second tank body 12 into several connected reaction zones. The chemical spraying member 22 is arranged inside the reaction zone, and the chemical spraying member 22 is used for evenly spraying chemicals on the reaction zone. The stirring and mixing member 23 is arranged inside the layered sieve plate 21, and the stirring and mixing member 23 is used for evenly mixing the pulp after the chemicals are sprayed. A control unit is arranged on the device body 1. The control unit includes a controller, a first detector, a second detector and a processor. The control unit controls the opening and closing of different tubular filter elements 13 through the controller. The first detector and the second detector respectively detect the blockage and opening and closing states of the tubular filter element 13. The processor controls the mixing power of the mixing reaction unit 2 according to the opening and closing states of the tubular filter element 13.
[0027] A feed inlet 111 is arranged at the upper end of the first tank body 11, a good pulp discharge port 113 is arranged at the lower end of the first tank body 11, a conical hopper 112 is arranged inside the first tank body 11, an impurity discharge port 114 is arranged below the conical hopper 112. The tubular filter element 13 includes a first filter tube 131 and a second filter tube 132. The second filter tube 132 is arranged below the first filter tube 131, and the first filter tube 131 communicates with the second filter tube 132. The first filter tube 131 and the second filter tube 132 are a group, and multiple groups of the first filter tubes 131 and the second filter tubes 132 are vertically arranged in an array. Filters are arranged inside the first filter tube 131 and the second filter tube 132. A support plate 14 is arranged between the first tank body 11 and the second tank body 12. The support plate 14 is fixedly assembled with the tubular filter element 13, and a lifting ring 15 is fixedly assembled on the support plate 14. A guide pipe 16 is arranged on one side of the first tank body 11, and the guide pipe 16 communicates with the first filter tube 131. The end of the second filter tube 132 is connected with a feed pipe 17, and the other end of the feed pipe 17 communicates with the second tank body 12.
[0028] In this embodiment, the pulp enters the inside of the conical hopper 112 from the feed inlet 111. At this time, the conical hopper 112 is in a closed state and enters the conical container tangentially at high pressure to form a high-speed rotating eddy current. Impurities with a large density such as sand grains and metals, due to their large inertia, are thrown to the outer wall of the cone and spiral down along the wall surface to the bottom impurity discharge port 114. Good pulp with a small density such as fibers and water, due to its small centrifugal force, is concentrated in the center of the eddy current and is discharged from the guide pipe 16 along with the rising water flow, completing the rough filtration of the pulp. The filtered good pulp enters the inside of the first filter tube 131 and the second filter tube 132, and a coarse sieve element and a fine sieve element are respectively arranged inside them. Their pore sizes are different and are respectively used to intercept fiber bundles, sand grains, adhesives and fine particles. The good pulp filtered by the first filter tube 131 and the second filter tube 132 enters the inside of the second tank body 12 through the conveying of the feed pipe 17, preparing for mixing and reaction.
[0029] Example 2: An embodiment of the present invention discloses a pulp filter. According to the attached Figure 1 , 5 , as shown in Figures 6 and 7, it includes a body 1, and the body 1 is spliced and combined by a first tank 11 and a second tank 12. A plurality of tubular filter elements 13 for filtering pulp are arranged between the first tank 11 and the second tank 12. A mixing reaction unit 2 is arranged inside the second tank 12, and the mixing reaction unit 2 includes a layered sieve plate 21, a chemical spraying member 22, and a stirring and mixing member 23; The layered sieve plate 21 is vertically arranged in the second tank 12 in an array, and the layered sieve plate 21 divides the interior of the second tank 12 into several connected reaction zones; the chemical spraying member 22 is arranged inside the reaction zone, and the chemical spraying member 22 is used for evenly spraying chemicals on the reaction zone; the stirring and mixing member 23 is arranged inside the layered sieve plate 21, and the stirring and mixing member 23 is used for evenly mixing the pulp after spraying the chemicals; A control unit is arranged on the body 1, and the control unit includes a controller, a first detector, a second detector, and a processor. The control unit controls the opening and closing of different tubular filter elements 13 through the controller. The first detector and the second detector respectively detect the clogging and opening and closing states of the tubular filter elements 13, and the processor controls the mixing and reaction efficiency of the mixing reaction unit 2 according to the opening and closing states of the tubular filter elements 13.
[0030] The chemical agent spraying member 22 includes an upper spraying pipe 221, a middle spraying pipe 222, and a bottom spraying pipe 223; the upper spraying pipe 221 is arranged at the upper end inside the second tank body 12; the middle spraying pipe 222 is arranged in the middle inside the second tank body 12; the bottom spraying pipe 223 is arranged at the lower part inside the second tank body 12. The chemical agent spraying member 22 further includes a spray head 224 and a liquid medicine feeding pipe 225; the spray head 224 is arranged below the upper spraying pipe 221, the middle spraying pipe 222, and the bottom spraying pipe 223, and the spray heads 224 are distributed in an annular array; the liquid medicine feeding pipe 225 is arranged on one side of the upper spraying pipe 221, the middle spraying pipe 222, and the bottom spraying pipe 223, and the liquid medicine feeding pipe 225 is used for conveying the liquid medicine into the inside of the spraying pipe. The stirring and mixing member 23 includes a servo motor 231, a rotating shaft 232, and an anchor type stirring paddle 233; the servo motor 231 is fixedly assembled at the bottom of the second tank body 12; the rotating shaft 232 is arranged inside the second tank body 12, and the output shaft of the servo motor 231 is fixedly assembled with the rotating shaft 232, and the rotating shaft 232 is rotationally connected with the layered sieve plate 21; the anchor type stirring paddle 233 is arranged on the rotating shaft 232, and the anchor type stirring paddles 233 are arranged in a vertical array. A discharge pipe 24 is arranged at the bottom of the second tank body 12, and the discharge pipe 24 is used for discharging the reacted pulp. A water outlet is arranged on one side of the discharge pipe 24, and the water outlet is used for discharging the redundant water. A temperature control unit 25 is arranged on the inner wall of the second tank body 12, and the temperature control unit 25 includes a conduit 251, a water inlet pipe 252, and a drain pipe 253; the outer surface of the conduit 251 is closely attached to the inner wall of the second tank body 12 and is used for heating and cooling the pulp inside the second tank body 12; the water inlet pipe 252 is arranged at one end of the conduit 251 and is used for conveying water into the inside of the conduit 251; the drain pipe 253 is arranged at the other end of the conduit 251 and is used for discharging the water that has transferred energy.
[0031] In this embodiment, the good pulp is transported through the feed pipe 17 and enters the interior of the second tank 12. The upper spraying pipe 221 starts to spray the medicament, and the stirring and mixing member 23 starts to stir. During this period, the good pulp passes through the holes between the layered sieve plates 21 and continues to descend into the middle reaction zone. At this time, the middle spraying pipe 222 starts to spray the medicament. During this period, the stirring and mixing member 23 continuously stirs and mixes. The good pulp continues to descend and enters the bottom reaction zone. At this time, the bottom spraying pipe 223 starts to spray the medicament, and the stirring and mixing member 23 continuously stirs and mixes. The good pulp can be fully stirred through the three reaction zones to make it fully mixed with the medicament. The function of the layered sieve plate 21 is to extend the residence time of the good pulp, prevent short-circuit flow, and ensure sufficient reaction. During this period, the temperature control unit 25, through the temperature sensing member, adjusts the temperature inside the tank in real time, thereby ensuring the reaction effect. For example, the bleaching process usually uses 70-90 °C. The liquid medicines sprayed by the upper spraying pipe 221, the middle spraying pipe 222, and the bottom spraying pipe 223 are all different. The upper spraying pipe 221 mainly sprays the main medicament, such as the bleaching agent. The middle spraying pipe 222 mainly sprays the auxiliary medicament, such as the pH regulator, to extend the reaction time and ensure that the medicament fully penetrates the fiber. The bottom spraying pipe 223 mainly sprays the stabilizer or defoaming agent to ensure the final stirring and homogenization. The final product is discharged through the discharge pipe 24.
[0032] Embodiment 3: An embodiment of the present invention discloses a pulp filter, according to the attached Figure 1-8 As shown, it includes a body 1, and the body 1 is spliced and combined by a first tank 11 and a second tank 12. A plurality of tubular filter elements 13 for filtering pulp are arranged between the first tank 11 and the second tank 12. A mixing and reaction unit 2 is arranged inside the second tank 12, and the mixing and reaction unit 2 includes a layered sieve plate 21, a medicament spraying member 22, and a stirring and mixing member 23; The layered sieve plates 21 are vertically arranged in an array inside the second tank 12, and the layered sieve plates 21 divide the interior of the second tank 12 into several connected reaction zones; the medicament spraying member 22 is arranged inside the reaction zone, and the medicament spraying member 22 is used for uniformly spraying the medicament on the reaction zone; the stirring and mixing member 23 is arranged inside the layered sieve plate 21, and the stirring and mixing member 23 is used for uniformly mixing the pulp after spraying the medicament; A control unit is arranged on the body 1, and the control unit includes a controller, a first detector, a second detector, and a processor. The control unit controls the opening and closing of different tubular filter elements 13 through the controller. The first detector and the second detector respectively detect the clogging and opening and closing states of the tubular filter elements 13. The processor controls the mixing and reaction efficiency of the mixing and reaction unit 2 according to the opening and closing states of the tubular filter elements 13.
[0033] In this embodiment; 1. Variable definition : The Status of a solenoid valve (0 = closed, 1 = open) : The status of pipeline blockage (0 = normal, 1 = blocked) : The opening degree of the pipeline valve (0 - 100%) : Mixing efficiency of the second tank (0 ≤ E ≤ 1, 1 = maximum efficiency) 2. Blockage detection logic The first detector judges blockage through flow and pressure difference : Control response: 3. Dynamic adjustment of mixing efficiency The second detector reads the opening degree of the valve , and the processor calculates the average value of the total opening degree: Mixing efficiency is adjusted according to a piecewise function: where is the adjustment factor (usually taken = 1 for linear response, > 1 to strengthen the influence of low opening degree).
[0034] 4. System state transition equation Normal operation mode: is the mixing efficiency adjustment rate, which is calculated from the current .
[0035] Fault handling mode: When , the system enters the maintenance sub - loop and pauses the operation of this pipeline until manual reset.
[0036] 5. Multi - pipeline collaborative control There are parallel pipelines, and the effective opening degree is calculated by excluding blocked pipelines: Ensure that the mixing efficiency only depends on the available pipeline status.
[0037] Model parameter example , the minimum allowable flow rate; , the maximum allowable pressure difference; , the maximum mixing efficiency; , the efficiency adjustment factor; , the efficiency adjustment rate constant.
[0038] Step 1: The controller opens the solenoid valves of all tubular filters to allow the slurry to flow.
[0039] Step 2: The first detector determines whether the pipeline is blocked by the flow rate and pressure difference.
[0040] If it is blocked, close the pipeline and trigger an alarm, and wait to restart after manual repair.
[0041] If there is no blockage, proceed to Step 3.
[0042] The second detector checks whether the valve opening is fully open: If it is fully open (100%), the second tank 12 mixes the pulp with the maximum efficiency (E = 1).
[0043] If it is not fully open, proceed to Step 4 for dynamic adjustment.
[0044] Step 4: The processor calculates the mixing efficiency (E = K_avg^α) based on the current valve opening (K_avg) and adjusts it in real time.
[0045] Circular monitoring: The system continuously operates and periodically returns to Step 2 to achieve closed-loop control.
[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A pulp filter, comprising a body (1), wherein the body (1) is formed by splicing a first tank body (11) and a second tank body (12), characterized in that: A plurality of groups of tubular filters (13) for filtering pulp are arranged between the first tank body (11) and the second tank body (12), and a mixing reaction unit (2) is arranged inside the second tank body (12). The mixing reaction unit (2) comprises: Layered sieve plates (21) are arranged in a vertical array inside the second tank body (12), and the layered sieve plates (21) divide the interior of the second tank body (12) into a plurality of interconnected reaction zones; A medicine spraying member (22) is arranged inside the reaction zone, and the medicine spraying member (22) is used to evenly spray the medicine on the reaction zone; A stirring and mixing element (23) is arranged inside the layered screen plate (21), and the stirring and mixing element (23) is used to evenly mix the pulp after the agent is sprayed; The body (1) is provided with a control unit, the control unit comprising a controller, a first detector, a second detector and a processor, the control unit controls the opening and closing of different tubular filters (13) through the controller, the first detector and the second detector respectively detect the blockage and the opening and closing state of the tubular filter (13), and the processor controls the mixing power of the mixing reaction unit (2) according to the opening and closing state of the tubular filter (13).
2. A pulp filter according to claim 1, characterized in that: The upper end of the first tank body (11) is provided with a feed inlet (111), the lower end of the first tank body (11) is provided with a good pulp discharge outlet (113), the interior of the first tank body (11) is provided with a conical hopper (112), and an impurity discharge outlet (114) is provided below the conical hopper (112).
3. A pulp filter according to claim 1, characterized in that: The tubular filter element (13) comprises: A first filter tube (131); The second filter tube (132) is arranged below the first filter tube (131); the first filter tube (131) is in communication with the second filter tube (132); the first filter tube (131) and the second filter tube (132) form a group; a plurality of groups of the first filter tube (131) and the second filter tube (132) are arranged in a vertical array; filters are arranged inside the first filter tube (131) and the second filter tube (132).
4. A pulp filter according to claim 1, characterized in that: A support plate (14) is provided between the first tank body (11) and the second tank body (12); the support plate (14) is fixedly assembled with the tubular filter element (13); and a lifting ring (15) is fixedly assembled on the support plate (14).
5. A pulp filter according to claim 3, characterized in that: A material guide pipe (16) is provided on one side of the first tank body (11), the material guide pipe (16) being in communication with the first filter tube (131), the end of the second filter tube (132) being in communication with a material delivery pipe (17), the other end of the material delivery pipe (17) being in communication with the second tank body (12).
6. A pulp filter according to claim 1, characterized in that: The medicine spraying member (22) comprises: An upper layer spraying pipe (221) disposed at the upper end of the second tank body (12); A middle-layer spray pipe (222) disposed in the middle of the second tank body (12); The bottom spray pipe (223) is arranged at the lower part of the second tank body (12).
7. A pulp filter according to claim 6, characterized in that: The medicine spraying member (22) further comprises: Spray heads (224) are arranged below the upper spray pipe (221), the middle spray pipe (222) and the bottom spray pipe (223), and the spray heads (224) are distributed in a ring array; A liquid medicine feeding pipe (225) is arranged on one side of the upper spraying pipe (221), the middle spraying pipe (222) and the bottom spraying pipe (223), and the liquid medicine feeding pipe (225) is used to transport the liquid medicine into the interior of the spraying pipe.
8. A pulp filter according to claim 1, characterized in that: The stirring and mixing element (23) comprises: A servo motor (231) fixedly mounted on the bottom of the second tank (12); A rotating shaft (232) is disposed inside the second tank body (12); the output shaft of the servo motor (231) is fixedly assembled with the rotating shaft (232); and the rotating shaft (232) is rotatably connected to the layered sieve plate (21); Anchor-type stirring paddles (233) are arranged on the rotating shaft (232), and the anchor-type stirring paddles (233) are arranged in a vertical array.
9. A pulp filter according to claim 1, characterized in that: A discharge pipe (24) is provided at the bottom of the second tank body (12), and the discharge pipe (24) is used to discharge the pulp after the reaction. A water outlet is provided on one side of the discharge pipe (24), and the water outlet is used to discharge excess water.
10. A pulp filter according to claim 1, characterized in that: The inner wall of the second tank body (12) is provided with a temperature control unit (25), and the temperature control unit (25) comprises: A conduit (251), the outer surface of which is in close contact with the inner wall of the second tank body (12), and is used to increase or decrease the temperature of the pulp inside the second tank body (12); A water inlet pipe (252), which is arranged at one end of the conduit (251) and is used to transport water into the interior of the conduit (251); A drain pipe (253) is provided at the other end of the conduit (251) and is used to discharge the water that has transferred energy.