A fiber recovery system in a household paper white water system

Abstract

The present invention belongs to the field of fiber recovery technology and provides a fiber recovery system for a household paper white water system, comprising a support platform fixedly connected to a recovery tank; a monitoring module comprising a turbidity detector disposed on the inner wall of the recovery tank, a separation mechanism disposed near the top of the recovery tank, the separation mechanism capable of separating a fiber layer from bubbles, and the separation mechanism capable of also detecting the density of the fiber layer. In the present invention, when the turbidity detector detects high turbidity in the recovery tank, the No. 2 water pump is first used to increase the return flow rate of the return water in the air dissolving tank, thereby improving the return flow ratio. Simultaneously, the No. 2 motor is activated to drive all rotating orifice plates to rotate. The fixed orifice plate cooperates with the guide holes on the rotating orifice plate to break up the bubbles in the return water, thereby controlling the bubble diameter in the return water.

Description

Technical Field

[0001] The invention belongs to the technical field of fiber recovery, and in particular relates to a fiber recovery system in a household paper white water system. Background Art

[0002] White water refers to the water removed during paper web formation, as well as further water removed in vacuum boxes and presses. White water recycling involves treating paper machine white water using various methods to reduce its suspended solids content, allowing it to be reused in the pulping and papermaking process in place of fresh water. This reduces fresh water usage, wastewater discharge, and solids loss.

[0003] In existing household paper white water systems, fiber recovery systems generally add flocculants to the white water to aggregate suspended matter in the white water, then introduce bubbles into the white water to accelerate the suspended matter to float upward and aggregate into a fiber layer, which is finally salvaged and collected.

[0004] In the above process, excessive flocculant will wrap the surface of the bubbles, causing the bubbles to burst or the flocs to sink; when the bubbles are introduced, if the bubble density is too high, the bubbles will easily combine with each other in the white water and cause the bubbles to burst; if the bubble density is too low, the collection efficiency of the suspended matter will be affected. Therefore, how to control the amount of flocculant and the regulation of the bubble introduction will affect the collection of suspended matter in the white water system. Summary of the Invention

[0005] The purpose of the present invention is to provide a fiber recovery system in a white water system for household paper, aiming to solve the technical problems in the prior art of how to regulate the dosage of flocculants and the introduction of bubbles.

[0006] The present invention is achieved by providing a fiber recovery system in a household paper white water system, comprising a support platform, the support platform being fixedly connected to a recovery tank, the recovery tank being provided with a water inlet pipe near the bottom thereof, and a water outlet pipe near the top thereof;

[0007] A monitoring module includes a turbidity detector disposed on the inner wall of a recovery tank, a separation mechanism disposed near the top of the recovery tank, the separation mechanism capable of separating the fiber layer from the bubbles and also capable of detecting the density of the fiber layer, and a camera fixedly connected to the upper side of the recovery tank via a fixing bracket, the camera capable of detecting the bubble density above the separation mechanism;

[0008] A vertical pipe is fixedly provided in the middle of the recovery tank, and the vertical pipe is connected to a conveying mechanism, which can clean the fiber layer accumulated at the bottom of the separation mechanism. The vertical pipe is connected to a plurality of nozzles on the upper side of the separation mechanism, and the conveying mechanism can supply water to the nozzles;

[0009] The support platform is connected to a separation mechanism, which is connected to a No. 2 water pump and an air pump. The No. 2 water pump can be connected to the upper side of the separation mechanism through a hose. A No. 1 hole groove is provided near the bottom of the vertical pipe. A bubble control mechanism is provided in the vertical pipe, which can regulate the diameter of bubbles in the return water entering the vertical pipe;

[0010] The side wall of the vertical pipe is fixedly connected to an electric telescopic sleeve capable of sealing the No. 1 hole groove. The electric telescopic sleeve is connected to a diversion mechanism, which can control the dispersion range of bubbles in the return water. The outside of the vertical pipe is provided with a drive assembly capable of driving the conveying mechanism and the electric telescopic sleeve to rotate;

[0011] The separation mechanism, conveying mechanism, driving assembly, bubble control mechanism, electric telescopic sleeve, flow guide mechanism, No. 2 water pump, air pump and nozzle are all electrically connected to the control module.

[0012] Further technical solution: the separation mechanism includes a filter screen plate, an electric lifting rod, a spring baffle and a spring;

[0013] The filter screen plate is arranged in the recovery tank, and the top of the recovery tank is fixedly connected to an electric lifting rod through a support frame, the telescopic end of the electric lifting rod passes through the filter screen plate, and the filter screen plate can be vertically slidably connected along the electric lifting rod, the telescopic end of the electric lifting rod is provided with a boss for limiting the filter screen plate, the telescopic end of the electric lifting rod is threadedly connected to a spring baffle, a spring is provided between the spring baffle and the filter screen plate, and a pressure sensor is provided between the spring and the filter screen plate;

[0014] The pressure sensor, turbidity detector and camera are electrically connected to the data processor and the PLC controller.

[0015] Further technical solution: the conveying mechanism includes a rotating sleeve, a collecting trough, a No. 1 motor, a pushing plate and a pushing mesh plate;

[0016] A No. 2 hole groove is provided on the vertical pipe, and a rotating sleeve is rotatably connected to the outside of the No. 2 hole groove, and the rotating sleeve is fixedly connected to the collecting trough. The interior of the rotating sleeve is fixedly connected to a No. 1 motor, and the No. 1 motor is spirally fixedly connected to a pushing plate and a pushing mesh plate from bottom to top.

[0017] Further technical solution: the bubble control mechanism includes a second motor, a rotating orifice plate and a fixed orifice plate;

[0018] The vertical tube is fixedly connected to a No. 2 motor, and the output shaft of the No. 2 motor is vertically fixedly connected to a plurality of rotating orifice plates in sequence. The upper end surface of the rotating orifice plate is provided with a plurality of rubber strips at intervals. The inner wall of the vertical tube is vertically fixedly connected to a plurality of fixed orifice plates in sequence, and each fixed orifice plate is fitted with a rotating orifice plate.

[0019] Further technical solution: the diversion mechanism includes a diversion tube, a water outlet trough, a baffle, a flow control component and a roller;

[0020] The electric telescopic sleeve is fixedly connected to the guide cylinder, and the guide cylinder is communicated with the No. 1 hole groove. The side wall of the guide cylinder is provided with multiple water outlet grooves along the circumferential direction. One side of the water outlet grooves is inclined in the same direction and provided with baffles. The baffles are rotatably connected to the outer wall of the guide cylinder through elastic torsion springs. A flow control component is provided in the guide cylinder, and the flow control component can adjust the direction of water flow in the guide cylinder. The flow control component is fixedly connected to a roller shaft, and the flow control component can drive the roller shaft to push each baffle to swing.

[0021] Further technical solution: the flow control assembly includes a bidirectional motor, a rotating plate, a No. 1 water pump and a water bag;

[0022] A bidirectional motor is fixedly connected to the inner wall of the guide tube, and one end of the output shaft of the bidirectional motor is fixedly connected to a plurality of rotating plates, each of which can fit the inner wall of the guide tube. A water bag is provided on one side of some rotating plates, and the water bag is connected to the output shaft of the guide tube. The other end of the output shaft of the bidirectional motor is connected to water pump No. 1, and the output shaft of the bidirectional motor is fixedly connected to a plurality of rollers, which can elastically abut against the baffle.

[0023] Further technical solution: The driving assembly includes a dual-axis motor and gears. The outer wall of the vertical tube is fixedly connected to the dual-axis motor. The two output shafts of the dual-axis motor are fixedly connected to gears, and the two gears are respectively engaged with the rotating sleeve and the electric telescopic sleeve.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. When suspended matter in the white water gathers on the lower side of the filter screen, the filter screen intercepts the suspended matter in the white water, and then the bubbles are filtered to the upper side of the filter screen. The spring elastically limits the filter screen. When the density of the suspended matter in the white water is too high, the pressure value of the pressure sensor increases. The camera can detect the density of the bubble accumulation. At intervals, the data processor can compare the pressure value of the pressure sensor and the bubble accumulation density value with the preset pressure threshold and density threshold to form judgment information;

[0026] 2. When the turbidity detector detects high turbidity in the recovery tank, it means that the flocs formed by the fibers have a high dispersion density, which means that the flocs are small and difficult to float. At this time, the No. 2 water pump is used to increase the return flow rate of the return water in the dissolved air tank, thereby improving the return flow ratio. At the same time, the No. 2 motor is started to rotate, which drives all the rotating orifice plates to rotate. The cooperation between the fixed orifice plate and the guide hole on the rotating orifice plate can break the bubbles in the return water, thereby controlling the bubble diameter in the return water.

[0027] 3. At this time, the electric telescopic sleeve is started to retract. At this time, the electric telescopic sleeve drives the guide mechanism to move upward, causing the return water to pass through multiple layers of rotating orifice plates and fixed orifice plates in the vertical pipe before it can be discharged from the guide mechanism. The cooperation of the multiple layers of rotating orifice plates and the fixed orifice plates can break the bubbles in the return water multiple times, further improving the bubble breaking effect in the return water; at the same time, the bubbles in the return water are continuously broken and mixed when passing through the multiple layers of rotating orifice plates and the fixed orifice plates, thereby increasing the distribution uniformity of the bubbles in the return water.

[0028] 4. When the camera detects that the bubble density is low and the dissolved air pressure in the dissolved air tank is high, it means that the bubbles are too much merged in the recovery tank. At this time, the air pump is started to reduce the dissolved air pressure in the dissolved air tank, and the bubble control mechanism is started to control the bubble diameter in the return water to become smaller; at the same time, the drive component is started to increase the speed of the guide tube, so that the bubbles are evenly distributed in the white water in the recovery tank. In this process, the baffle can protect each water outlet tank to prevent the suspended matter in the white water from sinking and blocking the inlet and outlet tanks, thereby affecting the discharge of bubbles in the return water. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 Schematic diagram of the internal structure of the recovery tank in the present invention.

[0031] Figure 3 for Figure 1 A magnified schematic diagram of area A in the middle.

[0032] Figure 4 It is a structural schematic diagram of the conveying mechanism in the present invention.

[0033] Figure 5 It is a schematic diagram of the connection between the electric telescopic sleeve and the guide mechanism in the present invention.

[0034] Figure 6 It is a structural schematic diagram of the flow guiding mechanism in the present invention.

[0035] Figure 7 Schematic diagram of the structure of the bubble control mechanism in the present invention.

[0036] Figure 8 It is a structural schematic diagram of the rotating orifice plate in the present invention.

[0037] In the attached figure: 1. Support platform; 2. Recovery trough; 3. Separation mechanism; 31. Filter screen; 32. Electric lifting rod; 33. Spring baffle; 34. Spring; 4. Conveying mechanism; 41. Rotating sleeve; 42. Collection trough; 43. No. 1 motor; 44. Pushing plate; 45. Pushing screen; 5. Driving assembly; 51. Dual-axis motor; 52. Gear; 6. Bubble control mechanism; 61. No. 2 motor; 62. Rotating orifice plate; 63. Fixed orifice plate; 64. Rubber strip ;7. Electric telescopic sleeve; 8. Diversion mechanism; 81. Diversion tube; 82. Water outlet trough; 83. Baffle; 84. Flow control component; 841. Bidirectional motor; 842. Turntable; 843. Water pump No. 1; 844. Water bag; 85. Roller; 9. Conduit; 10. Vertical pipe; 11. Water pump No. 2; 12. Air pump; 13. Nozzle; 14. Camera; 15. Hole slot No. 1; 16. Water inlet pipe; 17. Water outlet pipe; 18. Hole slot No. 2; 19. Dissolved air tank. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0040] like Figures 1-8 As shown, a fiber recovery system in a household paper white water system provided by the present invention comprises a support platform 1, to which a recovery tank 2 is fixedly connected, a water inlet pipe 16 is provided near the bottom of the recovery tank 2, and a water outlet pipe 17 is provided near the top of the recovery tank 2;

[0041] A monitoring module includes a turbidity detector disposed on the inner wall of a recovery tank 2. A separation mechanism 3 is disposed near the top of the recovery tank 2. The separation mechanism 3 is capable of separating the fiber layer from the bubbles and detecting the density of the fiber layer. A camera 14 is fixedly connected to the upper side of the recovery tank 2 via a fixing bracket. The camera 14 is capable of detecting the bubble density above the separation mechanism 3.

[0042] A vertical pipe 10 is fixedly provided in the middle of the recovery tank 2. The vertical pipe 10 is connected to a conveying mechanism 4. The conveying mechanism 4 can clean the fiber layer accumulated below the separation mechanism 3. The vertical pipe 10 is connected to a plurality of nozzles 13 on the upper side of the separation mechanism 3. The conveying mechanism 4 can supply water to the nozzles 13.

[0043] The support platform 1 is connected to a separation mechanism 3, and the separation mechanism 3 is connected to a second water pump 11 and an air pump 12. The second water pump 11 can be connected to the upper side of the separation mechanism 3 through a hose. The vertical pipe 10 is provided with a first hole groove 15 near the bottom. The vertical pipe 10 is provided with a bubble control mechanism 6. The bubble control mechanism 6 can regulate the diameter of bubbles in the return water entering the vertical pipe 10;

[0044] The side wall of the vertical pipe 10 is fixedly connected to an electric telescopic sleeve 7 capable of sealing the No. 1 hole groove 15. The electric telescopic sleeve 7 is connected to a diversion mechanism 8, which can control the dispersion range of bubbles in the return water. The outside of the vertical pipe 10 is provided with a drive assembly 5 capable of driving the conveying mechanism 4 and the electric telescopic sleeve 7 to rotate.

[0045] The separation mechanism 3, the conveying mechanism 4, the driving assembly 5, the bubble control mechanism 6, the electric telescopic sleeve 7, the flow guide mechanism 8, the second water pump 11, the air pump 12 and the nozzle 13 are all electrically connected to the control module.

[0046] In this embodiment, flocculant is added to white water, and then the white water is passed into the recovery tank 2 through the water inlet pipe 16. The white water flows out after being filtered by the separation mechanism 3, and part of the reflux water enters the air dissolving tank 19 through the second water pump 11. High-pressure gas is added to the air dissolving tank 19, and then the reflux water generates bubbles after being depressurized. The bubble water passes through the electric telescopic sleeve 7 and the guide mechanism 8 in turn and flows back to the recovery tank 2. The bubble water drives the suspended matter in the white water to float upward, and the separation mechanism 3 filters and collects the suspended matter in the white water. After that, the conveying mechanism 4 regularly cleans the suspended matter layer on the lower side of the separation mechanism 3.

[0047] The monitoring module is used to monitor and provide feedback on the collection of suspended matter in the recovery tank 2. The turbidity detector monitors the distribution density of suspended matter in the white water. The separation mechanism 3 can monitor the density of the fiber layer, thereby monitoring the accumulation efficiency of the fiber layer. The separation mechanism 3 can also separate the fiber layer from the bubbles, and then observe the bubble density through the camera 14.

[0048] The No. 2 water pump 11 can change the flow rate of the return water, and the air pump 12 can change the density of the bubbles in the return water, and the bubble control mechanism 6 can regulate the diameter of the bubbles in the return water entering the vertical pipe 10, and the driving component 5 can drive the diversion mechanism 8 to rotate, and the diversion mechanism 8 can control the dispersion range of the bubbles in the return water; according to the monitoring results of the monitoring module, the flotation effect of the suspended matter can be changed by controlling the input speed, input density and input diameter of the bubbles in the return water.

[0049] The control module regulates and controls the driving assembly 5, the bubble control mechanism 6, the electric telescopic sleeve 7, the flow guide mechanism 8, the second water pump 11 and the air pump 12, thereby regulating the flotation effect of the suspended matter.

[0050] like Figure 3 As shown, a fiber recovery system in a household paper white water system provided by the present invention, the separation mechanism 3 includes a filter screen 31, an electric lifting rod 32, a spring baffle 33 and a spring 34;

[0051] The filter screen plate 31 is arranged in the recovery tank 2. The top of the recovery tank 2 is fixedly connected to an electric lifting rod 32 through a support frame. The telescopic end of the electric lifting rod 32 passes through the filter screen plate 31, and the filter screen plate 31 can be vertically slidably connected along the electric lifting rod 32. The telescopic end of the electric lifting rod 32 is provided with a boss for limiting the filter screen plate 31. The telescopic end of the electric lifting rod 32 is threadedly connected to a spring baffle 33. A spring 34 is provided between the spring baffle 33 and the filter screen plate 31. A pressure sensor is provided between the spring 34 and the filter screen plate 31.

[0052] The pressure sensor, turbidity detector and camera 14 are electrically connected to the data processor and the PLC controller.

[0053] In this embodiment, when the suspended matter in the white water gathers to the lower side of the filter plate 31, the filter plate 31 intercepts the suspended matter in the white water, and then the bubbles are filtered to the upper side of the filter plate 31. The spring 34 elastically limits the filter plate 31. When the density of the suspended matter in the white water is too large, the pressure value of the pressure sensor increases. The camera 14 can detect the bubble aggregation density. At every interval, the data processor can compare the pressure value of the pressure sensor and the bubble aggregation density value with the preset pressure threshold and density threshold to form judgment information.

[0054] like Figure 4 As shown, a fiber recovery system in a household paper white water system provided by the present invention, the conveying mechanism 4 includes a rotating sleeve 41, a collecting trough 42, a No. 1 motor 43, a pushing plate 44 and a pushing mesh plate 45;

[0055] A No. 2 hole slot 18 is provided on the vertical pipe 10, and a rotating sleeve 41 is rotatably connected to the outside of the No. 2 hole slot 18, and the rotating sleeve 41 is fixedly connected to the collecting trough 42. A No. 1 motor 43 is fixedly connected to the inside of the rotating sleeve 41, and the No. 1 motor 43 is spirally fixedly connected to a pushing plate 44 and a pushing mesh plate 45 from bottom to top.

[0056] In this embodiment, at regular intervals, the electric lifting rod 32 is activated to retract, and the electric lifting rod 32 drives the filter screen 31 to move upward, and the No. 1 motor 43 is activated, and the No. 1 motor 43 drives the push plate 44 and the push screen plate 45 to rotate. The push screen plate 45 delivers white water to the nozzle 13. At this time, the nozzle 13 flushes the filter screen 31 from top to bottom with white water, thereby preventing excessive fiber from clogging the lower part of the filter screen plate 31, which would cause monitoring errors of the subsequent monitoring module.

[0057] The driving assembly 5 drives the rotating sleeve 41 to rotate, and the rotating sleeve 41 drives the collecting trough 42 to rotate. The collecting trough 42 collects the fiber layer gathered on the outside, and the fiber layer is transported upward through the rotating sleeve 41 along with the white water. Thereafter, under the filtering and conveying action of the pushing mesh plate 45, the fibers continue to be transported upward. The pushing mesh plate 45 is connected to the external hose through a rotating joint so that the collected fibers can be collected and recycled.

[0058] like Figure 7 As shown, a fiber recovery system in a household paper white water system provided by the present invention, the bubble control mechanism 6 includes a second motor 61, a rotating orifice plate 62 and a fixed orifice plate 63;

[0059] A No. 2 motor 61 is fixedly connected to the vertical tube 10, and the output shaft of the No. 2 motor 61 is vertically fixedly connected to multiple rotating orifice plates 62 in sequence. Multiple rubber strips 64 are distributed at intervals on the upper end surface of the rotating orifice plate 62. The inner wall of the vertical tube 10 is vertically fixedly connected to multiple fixed orifice plates 63 in sequence, and each fixed orifice plate 63 is fitted with a rotating orifice plate 62.

[0060] In this embodiment, when the turbidity detector detects that the turbidity in the recovery tank 2 is high, it means that the flocs formed by the fibers have a high dispersion density, which means that the flocs are small in volume and difficult to float.

[0061] At this time, the No. 2 water pump 11 is used to increase the return flow rate of the return water in the dissolved air tank 19, thereby improving the return flow ratio. At the same time, the No. 2 motor 61 is started to rotate, and the No. 2 motor 61 drives all the rotating orifice plates 62 to rotate. The fixed orifice plate 63 cooperates with the guide holes on the rotating orifice plate 62 to break the bubbles in the return water, thereby controlling the bubble diameter in the return water.

[0062] At this time, the electric telescopic sleeve 7 is started to contract, and the electric telescopic sleeve 7 drives the guide mechanism 8 to move upward, resulting in the return water in the vertical pipe 10 needing to pass through the multi-layer rotating orifice plate 62 and the fixed orifice plate 63 before it can be discharged from the guide mechanism 8. The cooperation of the multi-layer rotating orifice plate 62 and the fixed orifice plate 63 can break the bubbles in the return water multiple times, further improving the bubble breaking effect in the return water; at the same time, the bubbles in the return water are continuously broken and mixed when passing through the multi-layer rotating orifice plate 62 and the fixed orifice plate 63, thereby increasing the distribution uniformity of the bubbles in the return water.

[0063] Start the No. 2 motor 61 to drive all the rotating orifice plates 62 to rotate, and the rubber strips 64 on all the rotating orifice plates 62 remove the scale between the rotating orifice plates 62 and the fixed orifice plates 63 to prevent the scale from clogging the guide holes on the rotating orifice plates 62 and the fixed orifice plates 63.

[0064] like Figure 6 As shown, a fiber recovery system in a household paper white water system provided by the present invention is provided, wherein the diversion mechanism 8 includes a diversion cylinder 81, a water outlet trough 82, a baffle 83, a flow control component 84 and a roller 85;

[0065] The electric telescopic sleeve 7 is fixedly connected to the guide tube 81, and the guide tube 81 is communicated with the No. 1 hole groove 15. The side wall of the guide tube 81 is provided with multiple water outlet grooves 82 along the circumferential direction. One side of the water outlet grooves 82 is inclined in the same direction and provided with baffles 83. The baffles 83 are rotatably connected to the outer wall of the guide tube 81 through elastic torsion springs. A flow control component 84 is provided in the guide tube 81, and the flow control component 84 can adjust the direction of water flow in the guide tube 81. The flow control component 84 is fixedly connected to a roller shaft 85, and the flow control component 84 can drive the roller shaft 85 to push each baffle 83 to swing.

[0066] In this embodiment, when the camera 14 detects that the bubble density is low and the dissolved air pressure in the dissolved air tank 19 is high, it means that the bubbles are too many and merged in the recovery tank 2. At this time, the air pump 12 is started to reduce the dissolved air pressure in the dissolved air tank 19, and the bubble control mechanism 6 is started to control the bubble diameter in the return water to be smaller.

[0067] At the same time, the driving component 5 is started to increase the rotation speed of the guide tube 81, so that the bubbles are evenly distributed in the white water in the recovery tank 2. During this process, the baffle 83 can protect each water outlet tank 82 to prevent suspended matter in the white water from sinking and blocking the inlet and outlet tanks 82, thereby affecting the discharge of bubbles in the return water.

[0068] like Figure 6 As shown, a fiber recovery system in a household paper white water system provided by the present invention is provided, wherein the flow control component 84 includes a bidirectional motor 841, a rotating plate 842, a first water pump 843 and a water bag 844;

[0069] A bidirectional motor 841 is fixedly connected to the inner wall of the guide tube 81, and one end of the output shaft of the bidirectional motor 841 is fixedly connected to a plurality of rotating plates 842, each of which can fit against the inner wall of the guide tube 81. A water bag 844 is provided on one side of some rotating plates 842, and the water bag 844 is connected to the output shaft of the guide tube 81. The other end of the output shaft of the bidirectional motor 841 is connected to a water pump No. 1 843, and the output shaft of the bidirectional motor 841 is fixedly connected to a plurality of rollers 85, and the rollers 85 can elastically abut against the baffle 83.

[0070] In this embodiment, the bidirectional motor 841 can drive the rotating plate 842 to rotate. The rotation of the rotating plate 842 can clean the inner wall of the guide tube 81 to prevent scaling on the inner wall of the guide tube 81 and thereby block part of the water outlet trough 82.

[0071] Start water pump No. 1 843 regularly. Water pump No. 1 843 can increase the water pressure in the water bag 844. The water bag 844 expands under the action of water pressure, thereby blocking part of the water outlet trough 82. At this time, the bidirectional motor 841 drives the water bag 844 to rotate, and each water outlet trough 82 is intermittently connected. The water pressure in the guide tube 81 increases. Under the guidance of the baffle 83, the sediment on the outer wall of each baffle 83 can be washed by the return water. At this time, water pump No. 1 843 drives the roller 85 to push each baffle 83 to oscillate. The baffle 83 can oscillate and disperse the sediment on its own side wall, and then take away the sediment through the bubbles in the return water, thereby achieving effective cleaning of the inner wall of the entire guide tube 81 and all water outlet troughs 82 and baffles 83, avoiding the scale in the return water and the sediment in the white water affecting the discharge effect of the bubbles, and avoiding uneven distribution of bubbles in the white water.

[0072] When the No. 1 water pump 843 is able to increase the water pressure in the water bag 844, the bidirectional motor 841 drives the water bag 844 to rotate, and each water outlet groove 82 is intermittently connected, then under the action of water pressure, the return water is discharged from each water outlet groove 82 in turn to a longer distance, thereby ensuring that the bubbles are evenly distributed in different areas of the recovery tank 2.

[0073] like Figure 2 As shown, a fiber recovery system in a household paper white water system provided by the present invention is provided. The driving assembly 5 includes a dual-axis motor 51 and a gear 52. The outer wall of the vertical pipe 10 is fixedly connected to the dual-axis motor 51. The two output shafts of the dual-axis motor 51 are fixedly connected to the gear 52, and the two gears 52 are respectively engaged with the rotating sleeve 41 and the electric telescopic sleeve 7.

[0074] In this embodiment, the dual-axis motor 51 is started, and the dual-axis motor 51 can drive the two gears 52 to rotate independently. The dual-axis motor 51 drives the rotating sleeve 41 to rotate independently through one of the gears 52. In addition, the dual-axis motor 51 can drive the electric telescopic sleeve 7 to rotate independently through the other gear 52.

[0075] Working principle:

[0076] In this embodiment, flocculant is added to white water, and then the white water is passed into the recovery tank 2 through the water inlet pipe 16. The white water flows out after being filtered by the separation mechanism 3, and part of the reflux water enters the air dissolving tank 19 through the second water pump 11. High-pressure gas is added to the air dissolving tank 19, and then the reflux water generates bubbles after being depressurized. The bubble water passes through the electric telescopic sleeve 7 and the guide mechanism 8 in turn and flows back to the recovery tank 2. The bubble water drives the suspended matter in the white water to float upward, and the separation mechanism 3 filters and collects the suspended matter in the white water. After that, the conveying mechanism 4 regularly cleans the suspended matter layer on the lower side of the separation mechanism 3.

[0077] Specifically, when the suspended matter in the white water gathers on the lower side of the filter screen 31, the filter screen 31 intercepts the suspended matter in the white water, and then the bubbles are filtered to the upper side of the filter screen 31. The spring 34 elastically limits the filter screen 31. When the density of the suspended matter in the white water is too high, the pressure value of the pressure sensor increases. The camera 14 can detect the density of the bubble accumulation. At intervals, the data processor can compare the pressure value of the pressure sensor and the bubble accumulation density value with the preset pressure threshold and density threshold to form judgment information.

[0078] Specifically, when the turbidity detector detects that the turbidity in the recovery tank 2 is high, it means that the flocs formed by the fibers have a high dispersion density, which means that the flocs are small in size and difficult to float.

[0079] At this time, the No. 2 water pump 11 is used to increase the return flow rate of the return water in the dissolved air tank 19, thereby improving the return flow ratio. At the same time, the No. 2 motor 61 is started to rotate, and the No. 2 motor 61 drives all the rotating orifice plates 62 to rotate. The fixed orifice plate 63 cooperates with the guide holes on the rotating orifice plate 62 to break the bubbles in the return water, thereby controlling the bubble diameter in the return water.

[0080] At this time, the electric telescopic sleeve 7 is started to contract, and the electric telescopic sleeve 7 drives the guide mechanism 8 to move upward, resulting in the return water in the vertical pipe 10 needing to pass through the multi-layer rotating orifice plate 62 and the fixed orifice plate 63 before it can be discharged from the guide mechanism 8. The cooperation of the multi-layer rotating orifice plate 62 and the fixed orifice plate 63 can break the bubbles in the return water multiple times, further improving the bubble breaking effect in the return water; at the same time, the bubbles in the return water are continuously broken and mixed when passing through the multi-layer rotating orifice plate 62 and the fixed orifice plate 63, thereby increasing the distribution uniformity of the bubbles in the return water.

[0081] Specifically, when the pressure sensor falls below the pressure threshold in the data processor, it indicates that the fiber layer gathered at the bottom of the filter screen 31 is relatively loose and has a high moisture content. At this time, the air pump 12 is controlled to reduce the dissolved air pressure in the dissolved air tank 19, while increasing the amount of flocculant added to the white water. Specifically, when the camera 14 detects a low bubble density while the dissolved air pressure in the dissolved air tank 19 is high, it indicates that the bubbles are excessively coalescing in the recovery tank 2. At this time, the air pump 12 is activated to reduce the dissolved air pressure in the dissolved air tank 19, while the bubble control mechanism 6 is activated to reduce the diameter of the bubbles in the return water.

[0082] At the same time, the driving component 5 is started to increase the rotation speed of the guide tube 81, so that the bubbles are evenly distributed in the white water in the recovery tank 2. During this process, the baffle 83 can protect each water outlet tank 82 to prevent suspended matter in the white water from sinking and blocking the inlet and outlet tanks 82, thereby affecting the discharge of bubbles in the return water.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0084] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A fiber recovery system in a household paper white water system, comprising a support platform (1), wherein the support platform (1) is fixedly connected to a recovery tank (2), characterized in that: include: A monitoring module comprising a turbidity detector arranged on the inner wall of a recovery tank (2); a separation mechanism (3) is arranged near the top of the recovery tank (2); the separation mechanism (3) is capable of separating the fiber layer from the bubbles, and the separation mechanism (3) is also capable of detecting the density of the fiber layer; a camera (14) is fixedly connected to the upper side of the recovery tank (2) via a fixing frame; A vertical pipe (10) is fixedly provided in the middle of the recovery tank (2), and the vertical pipe (10) is connected to a conveying mechanism (4). The conveying mechanism (4) can clean the fiber layer accumulated at the lower part of the separation mechanism (3). The vertical pipe (10) is connected to a plurality of nozzles (13) at the upper side of the separation mechanism (3), and the conveying mechanism (4) can supply water to the nozzles (13); The support platform (1) is connected to a separation mechanism (3), and the separation mechanism (3) is connected to a No. 2 water pump (11) and an air pump (12). The No. 2 water pump (11) can be connected to the upper side of the separation mechanism (3) through a hose. A No. 1 hole groove (15) is provided near the bottom of the vertical pipe (10). A bubble control mechanism (6) is provided in the vertical pipe (10). The bubble control mechanism (6) can regulate the diameter of bubbles in the return water entering the vertical pipe (10); The side wall of the vertical pipe (10) is fixedly connected to an electric telescopic sleeve (7), and the electric telescopic sleeve (7) is connected to a flow guiding mechanism (8). The flow guiding mechanism (8) can control the dispersion range of bubbles in the return water. The outside of the vertical pipe (10) is provided with a driving component (5) capable of driving the conveying mechanism (4) and the electric telescopic sleeve (7) to rotate; The separation mechanism (3), the conveying mechanism (4), the driving assembly (5), the bubble control mechanism (6), the electric telescopic sleeve (7), the flow guide mechanism (8), the second water pump (11), the air pump (12) and the nozzle (13) are all electrically connected to the control module; The bubble control mechanism (6) includes a No. 2 motor (61), a rotating orifice plate (62), and a fixed orifice plate (63); the No. 2 motor (61) is fixedly connected to the vertical tube (10); the output shaft of the No. 2 motor (61) is vertically fixedly connected to a plurality of rotating orifice plates (62) in sequence; the upper end surface of the rotating orifice plate (62) is spaced apart with a plurality of rubber strips (64); the inner wall of the vertical tube (10) is vertically fixedly connected to a plurality of fixed orifice plates (63) in sequence, and each fixed orifice plate (63) is in contact with a rotating orifice plate (62); The flow guide mechanism (8) includes a flow guide tube (81), a water outlet groove (82), a baffle (83), a flow control component (84) and a roller (85); the electric telescopic sleeve (7) is fixedly connected to the flow guide tube (81), the flow guide tube (81) is communicated with the No. 1 hole groove (15), the side wall of the flow guide tube (81) is provided with a plurality of water outlet grooves (82) along the circumferential direction, and a baffle (83) is provided on one side of the water outlet groove (82) so as to be inclined in the same direction, and the baffles (83) are rotatably connected to the outer wall of the flow guide tube (81) through elastic torsion springs, and a flow control component (84) is provided in the flow guide tube (81), and the flow control component (84) can adjust the direction of water flow in the flow guide tube (81), and the flow control component (84) is fixedly connected to the roller (85), and the flow control component (84) can drive the roller (85) to push each baffle (83) to swing; The flow control component (84) comprises a bidirectional motor (841), a rotating plate (842), a water pump (843) and a water bag (844); the inner wall of the guide tube (81) is fixedly connected to the bidirectional motor (841); one end of the output shaft of the bidirectional motor (841) is fixedly connected to a plurality of rotating plates (842); each rotating plate (842) is capable of fitting with the inner wall of the guide tube (81); one side of some rotating plates (842) is provided with a water bag (844); the water bag (844) is connected to the output shaft of the guide tube (81); the other end of the output shaft of the bidirectional motor (841) is connected to the water pump (843); and the output shaft of the bidirectional motor (841) is fixedly connected to a plurality of rollers (85); the rollers (85) are capable of elastically contacting the baffle (83).

2. The fiber recovery system in the household paper white water system according to claim 1, characterized in that: The separation mechanism (3) comprises a filter screen (31), an electric lifting rod (32), a spring baffle (33) and a spring (34); The filter screen plate (31) is arranged in the recovery tank (2), and the top of the recovery tank (2) is fixedly connected to an electric lifting rod (32) through a support frame, the telescopic end of the electric lifting rod (32) passes through the filter screen plate (31), and the filter screen plate (31) can be vertically slidably connected along the electric lifting rod (32), the telescopic end of the electric lifting rod (32) is provided with a boss for limiting the filter screen plate (31), the telescopic end of the electric lifting rod (32) is threadedly connected to a spring baffle (33), a spring (34) is provided between the spring baffle (33) and the filter screen plate (31), and a pressure sensor is provided between the spring (34) and the filter screen plate (31); The pressure sensor, turbidity detector and camera (14) are electrically connected to a data processor and a PLC controller.

3. The fiber recovery system in the household paper white water system according to claim 1, characterized in that: The conveying mechanism (4) includes a rotating sleeve (41), a collecting trough (42), a No. 1 motor (43), a pushing plate (44) and a pushing mesh plate (45); The vertical pipe (10) is provided with a second hole groove (18), the second hole groove (18) is externally rotatably connected to a rotating sleeve (41), the rotating sleeve (41) is fixedly connected to a collecting trough (42), the rotating sleeve (41) is internally fixedly connected to a first motor (43), and the first motor (43) is spirally fixedly connected to a push plate (44) and a push mesh plate (45) from bottom to top.

4. The fiber recovery system in the household paper white water system according to claim 3, characterized in that: The driving assembly (5) comprises a dual-axis motor (51) and a gear (52); the outer wall of the vertical tube (10) is fixedly connected to the dual-axis motor (51); both output shafts of the dual-axis motor (51) are fixedly connected to the gear (52); and the two gears (52) are respectively engaged with the rotating sleeve (41) and the electric telescopic sleeve (7).

Images