Intelligent detection and control system for online detection of whiteness of paper pulp

Abstract

The invention relates to the technical field of paper pulp whiteness detection, and particularly discloses a paper pulp whiteness online detection intelligent detection and control system, which comprises an operation table and a rotating plate, the rotating plate is rotatably connected to the upper end of the operation table through a rotating shaft, and supporting legs are fixedly mounted on the four sides of the lower end of the operation table; quantitative paper pulp is input into the cylinder every time through an external paper pulp conveying pipe, a second electric push rod is started to drive a second push block to extrude the paper pulp, then a third electric push rod is started to pull a first stress plate, and paper scraps fall into a second round hole and are located at the upper end of a net plate; then the electric drive rotating plate is started again to rotate to rotate the paper sheet to the position under a third push block, a fourth electric push rod drives the third push block to press the paper sheet, the paper sheet is subjected to profiling and moisture squeezing again, then the paper sheet is rotated to the lower end of a whiteness sensor, whiteness detection is conducted, detection is conducted four times in the same manner, and detection results are compared; and data for accurately measuring the whiteness of the slurry is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of pulp whiteness detection, and in particular to an intelligent detection and control system for online detection of pulp whiteness. Background Art

[0002] With the development of automation technology and information technology, whiteness online detectors have emerged. The use of online whiteness sensors can obtain continuous changes in pulp whiteness during the bleaching process, which can continuously control the addition of bleaching chemicals and reduce the consumption of chemicals while ensuring quality. On the one hand, it can reduce the cost of the bleaching process, and on the other hand, it can reduce the emission of pollutants in the bleaching process.

[0003] The online whiteness sensor studied by Zhang Zhanbo and others from the State Key Laboratory of Papermaking Engineering at South China University of Technology is based on fiber optic sensing technology and uses light-emitting diodes as light sources. A 475nm blue light is irradiated into the pulp flow through the irradiation fiber, and the measuring fiber will receive part of the reflected light. In addition, a beam of light needs to be drawn out from the irradiation fiber for comparison. The light in the measuring fiber and the reference fiber is photoelectrically converted and amplified, and then converted into digital quantities through a knife conversion. The measurement divided by the reference is used as the sensor parameter, and a mathematical regression is performed on the standard whiteness value measured in the laboratory. The pulp whiteness is calculated based on the obtained mathematical model and the light intensity measured by the sensor. This method improves the speed of pulp whiteness detection and can realize online whiteness detection. However, its disadvantage is that it directly detects the whiteness of the slurry flow, while the conditions of the slurry itself in the pipeline are varied. First, the measured slurry sample is not a flat surface. Therefore, the amount of 457nm blue light reflected by the slurry will be different at different measurement points. After diffuse reflection, there will be great differences in the collection of reflected blue light. In addition, according to experimental research, the reflectivity of 457nm blue light is different when the concentration of slurry is different. When the sensor is directly used to measure the whiteness of the slurry in the pipeline, if the concentration changes, the measured whiteness value will change greatly. From the above analysis, it is known that in order to accurately measure the whiteness of the slurry, the slurry must be pre-processed, that is, to ensure that the measured slurry sample has a certain smoothness, which is conducive to the reflection of light. Summary of the invention

[0004] The object of the present invention is to provide an intelligent inspection and control system for online detection of pulp brightness, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent inspection and control system for online detection of pulp whiteness, comprising: an operating table and a rotating plate, the rotating plate is rotatably connected to the upper end of the operating table through a rotating shaft, and support legs are fixedly installed on the four sides of the lower end of the operating table, and a plurality of circular holes 1 and 2 are cross-opened on the circumference of the outer end side wall of the rotating plate, each of the circular holes 2 is convex, and a force-bearing plate 1 is installed in each circular hole 2, and a mesh plate is fixedly installed on the upper end of the force-bearing plate 1; An electric push rod 1, a cylinder, a mounting cylinder and an electric push rod 4 are respectively installed on the upper end of the operating table. A push block 1 is fixedly installed on the upper end of the electric push rod 1. A pulp forming component is arranged in the cylinder. A whiteness sensor is fixedly installed on the lower end of the mounting cylinder. A push block 3 is fixedly installed on the lower end of the electric push rod 4.

[0006] Preferably, the upper end of the rotating shaft is fixedly connected to the center of the lower end of the rotating plate, the lower end of the rotating shaft is rotatably connected to the center of the operating table through a bearing sleeve, a motor is fixedly installed at the lower end of the operating table, and the output end of the motor is fixedly connected to the lower end of the rotating shaft through a coupling.

[0007] Preferably, a water storage box is placed on the outer side of the upper end of the operating table, the water storage box is located directly below the circular hole one, the opening size of the water storage box is larger than the size of the circular hole one, and the push block one is located directly below the circular hole two, and the size of the push block one is smaller than the minimum inner diameter of the circular hole two.

[0008] Preferably, two limit grooves are symmetrically opened at the inner end of the circular hole 2, a water leakage hole is opened on the side wall of the force-bearing plate 1, and two limit blocks are symmetrically fixedly connected to the bottom end of the force-bearing plate 1. When the force-bearing plate is placed in the circular hole 2, the limit blocks are inserted into the limit grooves.

[0009] Preferably, a support rod 1 is fixedly installed on the outer end of the cylinder, and the other end of the support rod 1 is fixedly installed on the upper end of the operating table, a support rod 2 is fixedly installed on the outer wall of the mounting cylinder, and the lower end of the support rod 2 is fixedly installed on the upper end of the operating table, and a support rod 3 is fixedly installed on the outer wall of the electric push rod 4, and the lower end of the support rod 3 is fixedly installed on the upper end of the operating table.

[0010] Preferably, the pulp forming component includes an electric push rod 2, a grouting pipe and an operating box, the electric push rod 2 is fixedly mounted on the top end of the cylinder, the output end of the electric push rod 2 slides through the top side wall of the cylinder and is fixedly connected to a push block 2, the grouting pipe is fixedly mounted on the side wall of the cylinder, and the inner end of the grouting pipe is connected and flush with the inner end of the cylinder.

[0011] Preferably, the operation box is fixedly mounted on the outer wall of one end of the cylinder, a slide groove is provided on the inner wall of the cylinder, one end of the slide groove is connected to the operation box, a force-bearing plate 2 is slidably connected in the slide groove, a forming net is fixedly mounted on the upper end of the force-bearing plate 2, and a connecting rod is fixedly mounted on one end of the force-bearing plate 2.

[0012] Preferably, the second force-bearing plate and the forming net are both circular and have the same diameter. The diameters of the second force-bearing plate and the forming net are both smaller than the diameter of the slide groove. When the second force-bearing plate and the forming net are located in the cylinder, the outer end of the second force-bearing plate is located in the slide groove.

[0013] Preferably, an electric push rod three is fixedly installed on the side wall of the end of the operation box away from the cylinder, the output end of the electric push rod three slides through the side wall of the operation box and is fixedly connected to one end of the connecting rod, a water inlet pipe is fixedly installed on the upper end of the operation box, and a water outlet pipe is fixedly installed on the lower end, and the inner ends of the water inlet pipe and the water outlet pipe are connected to the inner end of the operation box.

[0014] Preferably, a shunt pipe is fixedly mounted on the inner wall of the upper end of the operation box via a fixing ring, the shunt pipe is connected and communicated with the water inlet pipe, and a plurality of high-pressure spray heads are fixedly mounted on the lower end of the shunt pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: A fixed amount of pulp is input into the cylinder each time through the external pulp conveying pipe, and the electric push rod 2 is started to drive the push block 2 to squeeze the pulp. Then the electric push rod 3 is started to pull the force plate 1, so that the paper sheet falls into the circular hole 2 and is located at the upper end of the screen. Then the electric drive rotating plate is started again to rotate the paper sheet to the bottom of the push block 3. The electric push rod 4 drives the push block 3 to press the paper sheet, press the paper sheet and squeeze out the moisture again, and then rotate the paper sheet to the lower end of the whiteness sensor for whiteness detection. This is repeated four times and the test results are compared to obtain data for accurate measurement of pulp whiteness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a second schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the upper structure of the rotating plate of the present invention; Figure 4 It is a schematic diagram of the first force-bearing plate, the mesh plate and the second circular hole of the present invention; Figure 5 A bottom view of a load-bearing plate of the present invention; Figure 6 It is a schematic diagram of the installation of the cylinder, the installation cylinder and the electric push rod of the present invention; Figure 7 It is a side view of the cylindrical knot of the present invention; Figure 8 It is a schematic cross-sectional view of a cylinder of the present invention; Fig. 9 It is a schematic diagram of the inner end structure of the operation box of the present invention.

[0017] In the figure: 1. operating table; 2. supporting leg; 3. rotating shaft; 4. motor; 5. water storage box; 6. electric push rod 1; 7. push block 1; 8. rotating plate; 9. round hole 1; 10. round hole 2; 11. limiting groove; 12. force plate 1; 13. limiting block; 14. mesh plate; 15. cylinder; 16. support rod 1; 17. electric push rod 2; 18. push block 2; 19. grouting pipe; 20. operating box; 21. slide; 22. force plate 2; 23. forming net; 24. connecting rod; 25. electric push rod 3; 26. water inlet pipe; 27. water outlet pipe; 28. diversion pipe; 29. ​​fixing ring; 30. high pressure spray head; 31. installation cylinder; 32. support rod 2; 33. whiteness sensor; 34. electric push rod 4; 35. push block 3; 36. support rod 3. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0019] See also Figure 1-Figure 9 The present invention provides a technical solution: an intelligent inspection and control system for online detection of pulp whiteness, comprising: an operating table 1 and a rotating plate 8, the rotating plate 8 is rotatably connected to the upper end of the operating table 1 through a rotating shaft 3, the upper end of the rotating shaft 3 is fixedly connected to the center of the lower end of the rotating plate 8, the lower end of the rotating shaft 3 is rotatably connected to the center of the operating table 1 through a bearing sleeve, a motor 4 is fixedly installed at the lower end of the operating table 1, the output end of the motor 4 is fixedly connected to the lower end of the rotating shaft 3 through a coupling, the motor 4 drives the rotating shaft 3 to rotate, the rotating shaft 3 drives the rotating plate 8 to rotate, the four sides of the lower end of the operating table 1 are fixedly installed with supporting legs 2, the operating table 1 and the rotating plate 8 are supported, and the outer end of the rotating plate 8 A plurality of circular holes 9 and circular holes 10 are cross-opened on the circumference of the side wall, each of the circular holes 10 is convex, a force-bearing plate 12 is installed in each circular hole 10, a mesh plate 14 is fixedly installed on the upper end of the force-bearing plate 12, two limiting grooves 11 are symmetrically opened on the inner end of each circular hole 10, a water leakage hole is opened on the side wall of the force-bearing plate 12, and two limiting blocks 13 are symmetrically fixedly connected to the bottom end of the force-bearing plate 12. When the force-bearing plate 12 is placed in the circular hole 10, the limiting blocks 13 are inserted into the limiting grooves 11, and the force-bearing plate 12 and the mesh plate 14 are installed in the circular hole 10. Each time the motor 4 works, the circular hole 9 or the circular hole 10 is rotated to the bottom of the cylinder 15.

[0020] An electric push rod 16, a cylinder 15, a mounting cylinder 31 and an electric push rod 4 34 are respectively installed on the upper end of the operating table 1. A push block 7 is fixedly installed on the upper end of the electric push rod 16. A pulp forming component is arranged in the cylinder 15. A whiteness sensor 33 is fixedly installed on the lower end of the mounting cylinder 31. A push block 35 is fixedly installed on the lower end of the electric push rod 4 34. A water storage box 5 is placed on the outer side of the upper end of the operating table 1. The water storage box 5 is located directly below the circular hole 19. The opening size of the water storage box 5 is larger than the size of the circular hole 19. The water storage box 5 can allow the water generated by squeezing the pulp in the cylinder 15 to flow into the water storage box 5 through the circular hole 19 to collect the squeezed waste water.

[0021] A support rod 16 is fixedly mounted on the outer end of the cylinder 15, and the other end of the support rod 16 is fixedly mounted on the upper end of the operating table 1. The inner diameter of the cylinder 15 is smaller than the inner diameter of the circular hole 19 and is the same as the inner diameter of the circular hole 2 10. The lower end of the cylinder 15 is located directly above the circular hole 19 or the circular hole 2 10. A support rod 2 32 is fixedly mounted on the outer wall of the mounting cylinder 31, and the lower end of the support rod 2 32 is fixedly mounted on the upper end of the operating table 1. The whiteness sensor 33 at the lower end of the mounting cylinder 31 is located directly above the circular hole 19 or the circular hole 2 10. When the rotating plate 8 rotates, the circular hole 2 10 containing the paper sheet is rotated to the lower end of the whiteness sensor 33, and the whiteness sensor 33 detects the whiteness of the paper sheet. A support rod 3 36 is fixedly mounted on the outer wall of the electric push rod 4 34. The lower end of the support rod three 36 is fixedly installed on the upper end of the operating table 1, and the push block three 35 at the lower end of the electric push rod four 34 is located directly above the circular hole one 9 or the circular hole two 10, and the diameter of the push block three 35 is slightly smaller than the maximum inner diameter of the circular hole two 10. When the electric push rod four 34 is started, the push block three 35 is driven to press against the paper piece located at the upper end of the mesh plate 14 to squeeze out the moisture again. The push block one 7 is located directly below the circular hole one 9 or the circular hole two 10, and the size of the push block one 7 is slightly smaller than the minimum inner diameter of the circular hole two 10. When the electric push rod one 6 is started, the push block one 7 is pushed into the circular hole two 10, and the force-bearing plate one 12 and the mesh plate 14 as well as the formed paper piece located at the upper end of the mesh plate 14 are pushed out, so that the staff can remove the paper piece from the mesh plate 14, and replace and clean the mesh plate 14.

[0022] The pulp forming components include an electric push rod 17, a grouting pipe 19 and an operating box 20. The electric push rod 17 is fixedly installed on the top end of the cylinder 15. The output end of the electric push rod 17 slides through the top side wall of the cylinder 15 and is fixedly connected to a push block 18. The grouting pipe 19 is fixedly installed on the side wall of the cylinder 15. The inner end of the grouting pipe 19 is connected and flush with the inner end of the cylinder 15. The outer end of the grouting pipe 19 is connected to an external pulp conveying pipe. The pulp is injected into the cylinder 15 through the grouting pipe 19 via the external pulp conveying pipe.

[0023] The operation box 20 is fixedly mounted on the outer wall of one end of the cylinder 15, and a chute 21 is provided on the inner wall of the cylinder 15. One end of the chute 21 is connected to the operation box 20. A force-bearing plate 22 is slidably connected in the chute 21. A water outlet is provided on the side wall of the force-bearing plate 22. A forming net 23 is fixedly mounted on the upper end of the force-bearing plate 22. A connecting rod 24 is fixedly mounted on one end of the force-bearing plate 22. The force-bearing plate 22 and the forming net 23 are both circular and have the same diameter. The force-bearing plate 22 and the forming net The diameter of 23 is smaller than the diameter of chute 21. When the force plate 22 and the forming net 23 are located in the cylinder 15, the outer end of the force plate 22 is located in the chute 21. When the pulp is injected into the cylinder 15, the pulp falls on the upper end of the forming net 23, and then the electric push rod 21 is started to drive the push block 218 to extrude the pulp, and the pulp is initially extruded and formed. When the pulp is extruded, the cylinder 15 is located directly above the circular hole 9, and the waste water generated by the extrusion flows into the water storage box 5 through the circular hole 9.

[0024] An electric push rod 3 25 is fixedly installed on the side wall of the end of the operation box 20 away from the cylinder 15. The output end of the electric push rod 3 25 slides through the side wall of the operation box 20 and is fixedly connected to one end of the connecting rod 24. When the output end of the electric push rod 3 25 contracts, the force plate 22 and the forming net 23 are pulled into the operation box 20, leaving the formed paper sheet in the cylinder 15 and falling. At this time, the rotating plate 8 drives the circular hole 210 to be located directly below the cylinder 15, and the paper sheet falls into the circular hole 210 and is located at the upper end of the net plate 14. The upper end of the operation box 20 is fixedly installed with a water inlet pipe 26, and the lower end is fixedly installed with a water outlet pipe 2 7. The inner ends of the water inlet pipe 26 and the water outlet pipe 27 are both connected to the inner end of the operation box 20. A shunt pipe 28 is fixedly installed on the inner wall of the upper end of the operation box 20 through a fixing ring 29. The shunt pipe 28 is connected and connected to the water inlet pipe 26. A plurality of high-pressure spray heads 30 are fixedly installed at the lower end of the shunt pipe 28. The upper end of the water inlet pipe 26 is externally connected to an external water delivery pipe. When the mesh plate 14 is located in the operation box 20, the external water delivery pipe delivers water to the water inlet pipe 26. The water is sprayed toward the mesh plate 14 through the shunt pipe 28 and the high-pressure spray head 30 to clean the mesh plate 14. At the same time, the water outlet pipe 27 is externally connected to a drain pipe to discharge the water generated by cleaning.

[0025] In actual use, before inputting the pulp, the cylinder 15 is located directly above the circular hole 19, and a fixed amount of pulp is input into the cylinder 15 each time through the external pulp conveying pipe, and the pulp falls on the upper end of the forming net 23, and then the electric push rod 2 17 is started to drive the push block 2 18 to squeeze the pulp, and the pulp is initially squeezed and formed, and then the motor 4 drives the rotating plate 8 to rotate, and the circular hole 2 10 is rotated to the directly below the cylinder 15, and then the electric push rod 3 25 is started, and the output end of the electric push rod 3 25 contracts to pull the force plate 22 and the forming net 23 into the operation box 20, leaving the formed paper sheet in the cylinder 15 and falling, and the paper sheet falls into the circular hole 2 10 and is located at the upper end of the net plate 14, and then the motor 4 is started again to drive the rotating plate 8 to rotate, and the rotating plate 8 rotates with the paper sheet to Directly below the push block three 35, then start the electric push rod four 34, the electric push rod four 34 drives the push block three 35 to press against the paper sheet, press the paper sheet and squeeze out the moisture again, and then start the motor 4 again to drive the rotating plate 8 to rotate, and rotate the paper sheet to the lower end of the whiteness sensor 33 for whiteness detection. After the detection is completed, the motor 4 will drive the rotating plate 8 to rotate the detected paper sheet to the upper end of the push block 7, and the electric push rod one 6 will start to push the push block one 7 into the circular hole two 10, and push the force plate one 12 and the screen plate 14 as well as the formed paper sheet located at the upper end of the screen plate 14, so that the staff can remove the paper sheet from the screen plate 14, and replace and clean the screen plate 14. Repeat this four times of detection, and compare the test results to obtain data for accurate measurement of pulp whiteness.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent inspection and control system for online detection of pulp brightness, comprising: An operating table (1) and a rotating plate (8), wherein the rotating plate (8) is rotatably connected to the upper end of the operating table (1) via a rotating shaft (3), and support legs (2) are fixedly installed on four sides of the lower end of the operating table (1), characterized in that: a plurality of circular holes (9) and circular holes (10) are cross-opened on the circumference of the outer end side wall of the rotating plate (8), each circular hole (10) is convex, and a force-bearing plate (12) is installed in each circular hole (10), and a mesh plate (14) is fixedly installed on the upper end of the force-bearing plate (12); An electric push rod 1 (6), a cylinder (15), a mounting cylinder (31) and an electric push rod 4 (34) are respectively mounted on the upper end of the operating table (1); a push block 1 (7) is fixedly mounted on the upper end of the electric push rod 1 (6); a pulp forming component is arranged inside the cylinder (15); a whiteness sensor (33) is fixedly mounted on the lower end of the mounting cylinder (31); and a push block 3 (35) is fixedly mounted on the lower end of the electric push rod 4 (34).

2. The intelligent inspection and control system for online detection of pulp brightness according to claim 1, characterized in that: The upper end of the rotating shaft (3) is fixedly connected to the center of the lower end of the rotating plate (8), the lower end of the rotating shaft (3) is rotatably connected to the center of the operating table (1) via a bearing sleeve, a motor (4) is fixedly mounted on the lower end of the operating table (1), and the output end of the motor (4) is fixedly connected to the lower end of the rotating shaft (3) via a coupling.

3. The intelligent inspection and control system for online detection of pulp brightness according to claim 1, characterized in that: A water storage box (5) is placed outside the upper end of the operating table (1). The water storage box (5) is located directly below the circular hole (9). The opening size of the water storage box (5) is larger than the size of the circular hole (9). The push block (7) is located directly below the circular hole (10). The size of the push block (7) is smaller than the minimum inner diameter of the circular hole (10).

4. The intelligent inspection and control system for online detection of pulp brightness according to claim 1, characterized in that: Two limit grooves (11) are symmetrically formed at the inner end of the second circular hole (10), a water leakage hole is formed on the side wall of the first force-bearing plate (12), and two limit blocks (13) are symmetrically fixedly connected to the bottom end of the first force-bearing plate (12). When the force-bearing plate (12) is placed in the second circular hole (10), the limit blocks (13) are inserted into the limit grooves (11).

5. The intelligent inspection and control system for online detection of pulp brightness according to claim 1, characterized in that: A support rod 1 (16) is fixedly mounted on the outer end of the cylinder (15), and the other end of the support rod 1 (16) is fixedly mounted on the upper end of the operating table (1). A support rod 2 (32) is fixedly mounted on the outer wall of the mounting cylinder (31), and the lower end of the support rod 2 (32) is fixedly mounted on the upper end of the operating table (1). A support rod 3 (36) is fixedly mounted on the outer wall of the electric push rod 4 (34), and the lower end of the support rod 3 (36) is fixedly mounted on the upper end of the operating table (1).

6. The intelligent inspection and control system for online detection of pulp brightness according to claim 5, characterized in that: The pulp forming component comprises a second electric push rod (17), a grouting pipe (19) and an operating box (20); the second electric push rod (17) is fixedly mounted on the top end of the cylinder (15); the output end of the second electric push rod (17) slides through the top end side wall of the cylinder (15) and is fixedly connected to a second push block (18); the grouting pipe (19) is fixedly mounted on the side wall of the cylinder (15); the inner end of the grouting pipe (19) is connected to and flush with the inner end of the cylinder (15).

7. The intelligent inspection and control system for online detection of pulp brightness according to claim 6, characterized in that: The operation box (20) is fixedly mounted on the outer wall of one end of the cylinder (15); a slide groove (21) is provided on the inner wall of the cylinder (15); one end of the slide groove (21) is connected to the operation box (20); a second force-bearing plate (22) is slidably connected in the slide groove (21); a forming net (23) is fixedly mounted on the upper end of the second force-bearing plate (22); and a connecting rod (24) is fixedly mounted on one end of the second force-bearing plate (22).

8. The intelligent inspection and control system for online detection of pulp brightness according to claim 7, characterized in that: The second force-bearing plate (22) and the forming net (23) are both circular and have the same diameter. The diameters of the second force-bearing plate (22) and the forming net (23) are both smaller than the diameter of the chute (21). When the second force-bearing plate (22) and the forming net (23) are located in the cylinder (15), the outer end of the second force-bearing plate (22) is located in the chute (21).

9. The intelligent inspection and control system for online detection of pulp brightness according to claim 8, characterized in that: An electric push rod 3 (25) is fixedly mounted on the side wall of one end of the operation box (20) away from the cylinder (15); the output end of the electric push rod 3 (25) slides through the side wall of the operation box (20) and is fixedly connected to one end of the connecting rod (24); a water inlet pipe (26) is fixedly mounted on the upper end of the operation box (20); and a water outlet pipe (27) is fixedly mounted on the lower end; the inner ends of the water inlet pipe (26) and the water outlet pipe (27) are both connected to the inner end of the operation box (20).

10. The intelligent inspection and control system for online detection of pulp brightness according to claim 9, characterized in that: A diverter pipe (28) is fixedly mounted on the inner wall of the upper end of the operation box (20) via a fixing ring (29); the diverter pipe (28) is connected and communicated with the water inlet pipe (26); and a plurality of high-pressure spray heads (30) are fixedly mounted on the lower end of the diverter pipe (28).

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