Paper pulp pressure regulating and screening machine

Abstract

The invention relates to the technical field of screening equipment, and discloses a paper pulp pressure-regulating pulp screening machine which comprises a base, a slag separator mounted on the base, a pipeline part arranged on the slag separator and used for mixed injection of tail pulp and water of paper pulp and treatment and discharge of accepted pulp and waste residues, and a fiber removing part mounted in the slag separator and used for removing fibers from the pipeline part. The fiber removing part is installed on the machine body and used for preferentially cutting up long fibers in paper pulp, the linkage part is installed on the fiber removing part and used for linkage of a screen cylinder to work and releasing linkage of the screen cylinder to work, and the anti-blocking part is installed on the fiber removing part and used for self-adapting to each screen hole to conduct dredging work. The structure formed by the motor, the rotating shaft, the support, the funnel, the rotating drum, the cutters and other components of the fiber removing part is adopted, long fibers in paper pulp can be preferentially cut, the motor drives the rotating drum to rotate, the eight staggered cutters on the inner wall of the rotating drum can effectively cut the long fibers, the long fibers are prevented from winding screen holes in the subsequent screening process, and the screening efficiency is improved. Therefore, the screening efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screening equipment, and specifically relates to a pulp pressure regulating screen machine. Background Art

[0002] The pulp pressure regulating screen machine is a key equipment used for screening and purifying pulp in the paper industry, mainly based on the screening effect of a screen or a sieve drum. After the pulp is conveyed into the screen machine, it passes through the screen or the sieve drum under certain pressure and flow rate conditions. The screen or the sieve drum has sieve holes of a specific size, and only the pulp fibers that meet the requirements of the sieve hole size can pass through, while the larger impurities are intercepted on one side of the screen or the sieve drum, thus realizing the separation of pulp and impurities.

[0003] According to Chinese Patent Publication No. CN219793452U, this patent provides a high-efficiency and energy-saving pressure screen for pulp screening, including a base, a housing fixedly arranged on the base, a sieve drum arranged in the housing, and a rotor arranged in the sieve drum. The rotor is rotationally connected to the base through a driving device; an inlet pipe, a slag discharge pipe, and a pulp discharge pipe are arranged on the housing. The inlet pipe is communicated with the gap between the sieve drum and the rotor, the slag discharge pipe is communicated with the gap between the sieve drum and the rotor, and the pulp discharge pipe is communicated with the gap between the housing and the sieve drum. A brush is arranged on the inner side of the sieve drum, and the brush can move along the inner wall of the sieve drum with the rotation of the pulp, and can brush off the lighter impurities such as paper scraps and plastics adsorbed on the inner wall of the sieve drum, preventing the blockage of the sieve holes, greatly improving the liquid discharge efficiency of the sieve holes, and improving the efficiency of purifying impurities; at the same time, when there is no feeding, by using the rotation of the rotor and the ejection of the cylinder, the brush is driven to rotate along the inner wall of the sieve drum, and cooperating with the water in the nozzle, it is more convenient to clean the sieve drum regularly without disassembling the sieve drum, greatly improving the convenience of cleaning the sieve drum, the blockage situation of the sieve drum is significantly improved, the efficiency of the motor drive will not increase, the power consumption is reduced, and the energy-saving effect is good.

[0004] However, the pulp contains a large amount of fibers. During the screening process, the fibers are easily wound around the sieve holes of the sieve drum, especially the long fibers. They may span multiple sieve holes, gradually accumulate and block the sieve holes. Using a common brush to clean the blockage of long fibers has low efficiency and is difficult to achieve the expected effect. Therefore, a pulp pressure regulating screen machine is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a pulp pressure regulating screen machine, which solves the problem that using a common brush to clean the blockage of long fibers has low efficiency and is difficult to achieve the expected effect.

[0006] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: a pulp pressure regulating screen, including a base, a deslagger is installed on the base, a pipeline part is arranged on the deslagger for mixing and injecting pulp tailings and water, and for treating and discharging good pulp and waste residue, a defibering part is installed in the deslagger for preferentially shredding long fibers in the pulp, a linkage part is installed on the defibering part for driving the sieve drum to work and releasing the linkage of the sieve drum, an anti-blocking part is installed on the defibering part for adaptively dredging each sieve hole, a screening part is arranged inside the deslagger for rotating and separating and filtering good pulp and waste residue, and a slag discharging part is installed on the base and extends into the deslagger for automatically discharging the filtered waste residue.

[0007] Preferably, the deslagger includes a cylinder body and a top cover. The pipeline part includes a tail pulp pipeline, and the tail pulp pipeline is connected and installed on the top cover of the deslagger. An injection pipeline, a good pulp pipeline and a slag discharging pipeline are connected and installed on the cylinder body of the deslagger.

[0008] Preferably, the defibering part includes a frame, the frame is installed on the top of the top cover of the deslagger, a motor is installed on the frame, the output shaft of the motor is fixedly connected with a rotating shaft, the rotating shaft slides through the top cover of the deslagger and extends into the cylinder body of the deslagger, a bracket is fixedly sleeved on the extending end of the rotating shaft, a funnel is fixedly connected to the end of the bracket, a rotary drum is fixedly connected to the lower opening of the funnel, and eight cutting knives are connected around the inner wall of the rotary drum, and the eight cutting knives are arranged staggeredly.

[0009] Preferably, the linkage part includes two L-shaped plates, the two L-shaped plates are symmetrically installed on the top of the frame, two hydraulic cylinders I are fixedly connected to the two L-shaped plates respectively, the outer rods of the two hydraulic cylinders I are installed on the top of the top cover of the deslagger, a retaining ring I is fixedly sleeved on the bottom outer wall of the rotary drum, and a clamping block I is connected around the top of the retaining ring I.

[0010] Preferably, the anti-blocking part includes a rod sleeve, the rod sleeve is fixedly connected to the bottom inner wall of the rotary drum, a dredging rod is slidably connected to the inner wall of the rod sleeve, the end of the dredging rod slides through the rotary drum, and a spring is elastically connected between the dredging rod and the inner wall of the rod sleeve.

[0011] Preferably, two limiting grooves are symmetrically installed on the inner wall of the cylinder body of the deslagger. The screening part includes a sieve drum, a limiting ring is fixedly sleeved on the top outer wall of the sieve drum, the sieve drum is rotatably connected in the two limiting grooves through the limiting ring, a retaining ring II is fixedly connected to the top inner wall of the sieve drum, a clamping groove I corresponding to the clamping block I is opened at the bottom of the retaining ring II, and a clamping groove II is connected around the bottom inner wall of the sieve drum.

[0012] Preferably, the rotary drum is slidably connected to the inner wall of the second snap ring and extends into the sieve drum. The number of the anti-blocking parts corresponds to the number of sieve holes around the sieve drum. The end parts of the dredging rods in each anti-blocking part respectively slide through the corresponding sieve holes. The outer wall of the upper opening of the funnel is slidably connected to the inner wall of the cylinder body of the slag remover, and the first snap ring is slidably connected to the inner wall of the sieve drum.

[0013] Preferably, the slag discharging part includes a rod frame installed at the top of the inner wall of the base. A second hydraulic rod is installed in the rod frame. The inner rod of the second hydraulic rod slides through the base and extends into the cylinder body of the slag remover. The end part of the inner rod of the second hydraulic rod is rotatably connected to a frustum, and a second clamping block is connected around the top of the frustum.

[0014] Preferably, the number of the second clamping blocks corresponds to the number of the second clamping grooves. The frustum is inserted into the inner wall of the bottom end of the sieve drum, and each second clamping block is clamped with the corresponding second clamping groove.

[0015] Preferably, the bottom of the first snap ring fits with the top of the second clamping groove. The tapered end of the frustum extends towards the inside of the rotary drum. The water injection pipeline and the good pulp pipeline are on the same side. The top and bottom of the cylinder body of the slag remover are provided with through holes. The cylinder body of the slag remover is fixedly connected to the top of the outer wall of the base.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a pulp pressure regulating and screening machine, which has the following beneficial effects: 1. The pulp pressure regulating and screening machine adopts a structure composed of components such as the motor, rotating shaft, bracket, funnel, rotary drum and cutter in the defibering part, which can preferentially cut long fibers in the pulp. The motor drives the rotary drum to rotate, and the eight staggered cutters on the inner wall of the rotary drum can effectively cut long fibers, avoiding the entanglement of long fibers in the sieve holes during the subsequent screening process, thereby improving the screening efficiency.

[0017] 2. The pulp pressure regulating and screening machine adopts components such as the rod sleeve, dredging rod and spring in the anti-blocking part, and the number thereof corresponds to the number of sieve holes around the sieve drum. During the working process, the dredging rod can adaptively dredge each sieve hole. When the rotary drum moves up and down, it can drive the dredging rod to clean each sieve hole, effectively preventing the sieve holes from being blocked, greatly reducing the risk of the sieve holes being blocked by waste residue and fibers, and improving the service life and screening efficiency of the sieve drum.

[0018] 3. The pulp pressure regulating and screening machine adopts the sieve drum in the screening part, which is rotatably connected to the two limiting grooves on the inner wall of the cylinder body of the slag remover through the limiting ring, and can stably rotate and separate to filter good pulp and waste residue. During the working process, the sieve drum can perform centrifugal filtration on the pretreated pulp, separate the good pulp that meets the sieve hole size requirements, and intercept the waste residue in the sieve drum, improving the purity and quality of the pulp.

[0019] 4. The pulp pressure regulating and screening machine adopts a structure composed of a rod frame, a second hydraulic rod, a conical table, a second clamping block, etc. in the slag discharging part, which can automatically discharge the filtered waste residue. Through the telescopic movement of the second hydraulic rod, the lifting of the conical table can be controlled, so as to open or close the lower opening of the screen drum, enabling the waste residue to be discharged smoothly. This automated waste residue treatment method improves the efficiency of waste residue treatment and reduces manual labor.

[0020] 5. The pulp pressure regulating and screening machine adopts a deslagger including a cylinder body and a top cover. The top and bottom of the cylinder body are penetrated and fixedly connected to the top of the outer wall of the base. This structural design ensures the stability of the equipment. At the same time, the connection and cooperation between each component are reasonably designed. The rotating drum and the screen drum are clamped and rotated through the cooperation of a first clamping ring, a second clamping ring, and a first clamping groove, which not only ensures their synchronous movement but also prevents the pulp from overflowing during processing. The conical table of the slag discharging part and the screen drum are clamped through the second clamping block and the second clamping groove, which not only ensures the sealing performance during the discharge of waste residue but also realizes their synchronous rotation. The design of the two L-shaped plates, the first hydraulic rod, and related components in the interlocking part can realize the linkage and release of the rotating drum and the screen drum, and can adjust the position of the rotating drum in the screen drum. This design enables the equipment to flexibly switch working modes at different working stages, ensuring the stability and reliability of the equipment operation.

[0021] 6. The pulp pressure regulating and screening machine adopts a pipeline part connected to the pipeline of the papermaking workshop through a pressure valve, which facilitates the handling of the inlet and outlet of pulp, water, good pulp, and waste residue. The operation method is simple and easy to understand, conforming to the operation habits of technicians in this field. During the cleaning process of the equipment, through the telescopic movement of the hydraulic rod, the reset and cleaning operations of each component can be realized. The continuity between processes is strong, saving time and improving the efficiency of pulp processing. After the cleaning is completed, the inner rod of the second hydraulic rod rises to push the conical table into the screen drum to reset. The defibering part, the interlocking part, the anti-blocking part, and the slag discharging part can all be reset in time and directly carry out the next feeding operation, improving the operation convenience and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an overall axial view of a pulp pressure regulating and screening machine proposed by the present invention; Figure 2 is an overall bottom-side axial view of a pulp pressure regulating and screening machine proposed by the present invention; Figure 3 is a schematic diagram of the internal structure of the deslagger of a pulp pressure regulating and screening machine proposed by the present invention; Figure 4 is a connection diagram of the defibering part, the interlocking part, and the anti-blocking part of a pulp pressure regulating and screening machine proposed by the present invention; Figure 5 is a schematic diagram of the structure of the anti-blocking part of a pulp pressure regulating and screening machine proposed by the present invention; Figure 6Internal sectional view of a slag remover of a pulp pressure regulating screen pulp machine proposed by the present invention; Figure 7 Connection diagram of the screen pulp part and the slag discharging part of a pulp pressure regulating screen pulp machine proposed by the present invention; Figure 8 Schematic structural diagram of the screen pulp part of a pulp pressure regulating screen pulp machine proposed by the present invention; Figure 9 Schematic structural diagram of the slag discharging part of a pulp pressure regulating screen pulp machine proposed by the present invention.

[0023] In the figure: 1. Base; 2. Slag remover; 3. Pipeline part; 31. Tail pulp pipeline; 32. Water injection pipeline; 33. Good pulp pipeline; 34. Slag discharging pipeline; 4. Defibering part; 41. Frame; 42. Motor; 43. Rotating shaft; 44. Support; 45. Hopper; 46. Rotary drum; 47. Cutter; 5. Interlocking part; 51. L-shaped plate; 52. Hydraulic rod 1; 53. Snap ring 1; 54. Block 1; 6. Anti-blocking part; 61. Rod sleeve; 62. Unclogging rod; 63. Spring; 7. Limit groove; 8. Screen pulp part; 81. Screen drum; 82. Limit ring; 83. Snap ring 2; 84. Clamping groove 1; 85. Clamping groove 2; 9. Slag discharging part; 91. Rod rack; 92. Hydraulic rod 2; 93. Frustum; 94. Block 2. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-9 , the present invention provides a technical solution: a pulp pressure regulating screen pulp machine, including a base 1, the slag remover 2 of this case is installed on the base 1, and the slag remover 2 can refer to a UV pressure screen, which is mainly used for rough screening and fine screening of pulp such as deinked pulp and waste paper pulp. The pipeline part 3 of this case is arranged on the slag remover 2 and is used for mixing and injecting pulp tail pulp and water, as well as treating and discharging good pulp and waste residue. The defibering part 4 of this case is installed in the slag remover 2 and is used for preferentially shredding long fibers in the pulp. The interlocking part 5 of this case is installed on the defibering part 4 and is used for driving the screen drum 81 to work and releasing the linkage of the screen drum 81. The anti-blocking part 6 of this case is installed on the defibering part 4 and is used for self-adaptively dredging each screen hole. The screen pulp part 8 of this case is arranged inside the slag remover 2 and is used for rotating and separating and filtering good pulp and waste residue. The slag discharging part 9 of this case is installed on the base 1 and extends into the slag remover 2 and is used for automatically discharging the filtered waste residue.

[0026] In this embodiment, in order to ensure the stable inflow and outflow of the slurry, the deslagger 2 of this case includes a cylinder body and a top cover. The pipeline part 3 includes a tail slurry pipeline 31. The slurry enters the cylinder body from the tail slurry pipeline 31. The tail slurry pipeline 31 is connected and installed on the top cover of the deslagger 2. The cylinder body of the deslagger 2 is connected and installed with a water injection pipeline 32, a good slurry pipeline 33 and a slag discharge pipeline 34. Water flows into the cylinder body through the water injection pipeline 32. The filtered good slurry is discharged from the good slurry pipeline 33, and the filtered waste residue is discharged from the slag discharge pipeline 34. The defibering part 4 includes a frame 41. The frame 41 is installed on the top of the top cover of the deslagger 2. A motor 42 is installed on the frame 41. The output shaft of the motor 42 is fixedly connected with a rotating shaft 43. The rotating shaft 43 slidably penetrates through the top cover of the deslagger 2 and extends into the cylinder body of the deslagger 2. The extended end of the rotating shaft 43 is fixedly sleeved with a bracket 44. The end of the bracket 44 is fixedly connected with a funnel 45. The lower opening of the funnel 45 is fixedly connected with a rotating cylinder 46. By driving the rotating shaft 43 with the motor 42 and then driving the funnel 45 to rotate through the bracket 44, eight cutting knives 47 are circumferentially connected to the inner wall of the rotating cylinder 46. The eight cutting knives 47 are arranged staggeredly. The staggered cutting knives 47 rotate with the rotating cylinder 46 to cut the long fibers in the slurry. In order to further promote the independent operation of the rotating cylinder 46 and the synchronous operation of the rotating cylinder 46 and the sieve drum 81, the interlocking part 5 of this case includes two L-shaped plates 51. The two L-shaped plates 51 are symmetrically installed on the top of the frame 41. Hydraulic rods 52 are fixedly connected to the two L-shaped plates 51. The outer rods of the two hydraulic rods 52 are installed on the top cover of the deslagger 2. The telescopic movement of the hydraulic rod 52 adjusts the height of the motor 42 and at the same time adjusts the position of the rotating cylinder 46 in the sieve drum 81. A retaining ring 53 is fixedly sleeved on the outer wall of the bottom end of the rotating cylinder 46. A retaining block 54 is circumferentially connected to the top of the retaining ring 53.

[0027] It should be noted that, in order to prevent the sieve holes from being blocked, the anti-blocking part 6 of this case includes a rod sleeve 61. The rod sleeve 61 is fixedly connected to the inner wall of the bottom end of the rotary drum 46. A dredging rod 62 is slidably connected to the inner wall of the rod sleeve 61. The end of the dredging rod 62 slidably penetrates through the rotary drum 46. A spring 63 is elastically connected between the dredging rod 62 and the inner wall of the rod sleeve 61. The dredging rod 62 elastically expands and contracts through the spring 63 to open the sieve holes. Two limiting grooves 7 are symmetrically installed on the inner wall of the cylinder body of the slag remover 2. The screening part 8 includes a sieve drum 81. A limiting ring 82 is fixedly sleeved on the outer wall of the top end of the sieve drum 81. The sieve drum 81 is rotatably connected in the two limiting grooves 7 through the limiting ring 82. The sieve drum 81 is equivalent to being suspended and installed in the cylinder body, and is not affected by the movement and adjustment of other structures to cause the problem of falling. A second snap ring 83 is fixedly connected to the inner wall of the top end of the sieve drum 81. A first card slot 84 corresponding to the first snap block 54 is opened at the bottom of the second snap ring 83. The first snap block 54 and the first card slot 84 can be correspondingly inserted to lock the sieve drum 81 and the rotary drum 46 together for rotational movement. A second card slot 85 is connected around the inner wall of the bottom end of the sieve drum 81. The rotary drum 46 is slidably connected to the inner wall of the second snap ring 83 and extends into the sieve drum 81. The sliding connection has a certain degree of fit to prevent the slurry from overflowing during processing. In order to further improve the self-cleaning efficiency of the sieve drum 81 after use, the number of the anti-blocking parts 6 in this case corresponds to the number of sieve holes in one week of the sieve drum 81. The end parts of the dredging rods 62 in each anti-blocking part 6 respectively slidably penetrate through the corresponding sieve holes. The lifting of the rotary drum 46 can drive each anti-blocking part 6 to carry out dredging and cleaning work on each sieve hole. The outer wall of the upper opening of the funnel 45 is slidably connected to the inner wall of the cylinder body of the slag remover 2. The upper opening of the funnel 45 fits the inner wall of the cylinder body to prevent the unfiltered slurry from flowing to the outside of the sieve drum 81. The first snap ring 53 is slidably connected to the inner wall of the sieve drum 81.

[0028] It should be noted that, in order to further improve the efficiency of treating waste residue, the slag discharging part 9 of this case includes a rod holder 91. The rod holder 91 is installed on the top of the inner wall of the base 1. A second hydraulic rod 92 is installed in the rod holder 91. The inner rod of the second hydraulic rod 92 slidably penetrates through the base 1 and extends into the cylinder body of the slag remover 2. The end of the inner rod of the second hydraulic rod 92 is rotatably connected to a frustum 93. A second snap block 94 is connected around the top of the frustum 93. The number of the second snap blocks 94 corresponds to the number of the second card slots 85. The frustum 93 is inserted into the inner wall of the bottom end of the sieve drum 81. The frustum 93 blocks the lower opening of the sieve drum 81 to prevent the slurry from flowing out. Each second snap block 94 is clamped with the corresponding second card slot 85. The frustum 93 and the sieve drum 81 are connected into a whole for rotational work through clamping. The bottom of the first snap ring 53 is in contact with the top of the second card slot 85. This contact function promotes the formation of a closed space between the rotary drum 46 and the sieve drum 81 to prevent the slurry from overflowing from the sieve holes when cutting long fibers in the slurry. The tapered end of the frustum 93 extends towards the inside of the rotary drum 46. The water injection pipe 32 and the good slurry pipe 33 are located on the same side. The top and bottom of the cylinder body of the slag remover 2 are provided with through holes. The cylinder body of the slag remover 2 is fixedly connected to the top of the outer wall of the base 1. The integration of the cylinder body and the base 1 further improves the sealing performance.

[0029] Working principle: In this case, the pipeline section 3 of the present case is connected to the existing paper-making workshop pipelines through pressure valves, and its operation method can be achieved by those skilled in the art, so this case will not be elaborated too much. First, pulp is injected into the cylinder body of the deslagging device 2 through the tail pulp pipeline 31. The pulp flows along the funnel 45 and enters the rotating drum 46. By starting the motor 42, the rotating shaft 43 drives the bracket 44 to rotate. Synchronously, the bracket 44 drives the funnel 45 and the rotating drum 46 to rotate within the limit in the sieve drum 81. At this time, the cutting knife 47 will rotate accordingly, so as to stir the pulp and cut the long fibers in the pulp at the same time. The conical platform 93 and the first clamping ring 53 seal the bottom of the sieve drum 81 to prevent the pulp from flowing out. After the pretreatment of stirring and cutting the pulp is completed, by synchronously adjusting the extension of the inner rods of the two hydraulic rods 52, the frame 41 is driven to rise through the L-shaped plate 51. Synchronously, the bracket 44 is driven to rise by the rotating shaft 43 of the motor 42, so as to promote the funnel 45 to slide upward along the inner wall of the cylinder body higher than the water injection pipeline 32. At the same time, the rotating drum 46 slides upward along the inner wall of the second clamping ring 83, and the first clamping block 54 on the first clamping ring 53 is clamped and fixed with the first clamping groove 84. At this time, the pulp flows from the rotating drum 46 into the sieve drum 81. Through clamping, the sieve drum 81 rotates synchronously with the rotating drum 46. The sieve drum 81 is limited in the limiting groove 7 by the limiting ring 82 and will not have problems of shaking and deviation. At the same time, the conical platform 93 is clamped and fixed with the second clamping groove 85 by the second clamping block 94 and rotates synchronously with the sieve drum 81, so as to carry out centrifugal filtration on the pulp.

[0030] The water injection pipeline 32 injects water into the cylinder body. The water flow covers the bottom of the inner wall of the cylinder body and covers the sieve drum 81. By increasing the water pressure, the fluidity of the pulp is improved, so that the pulp can be better separated from the sieve drum 81. The waste residue is filtered in the sieve drum 81 and cannot pass through the sieve holes. Since the long fibers in the pulp are cut through pretreatment, the risk of long fiber entanglement and blockage of the sieve holes can be greatly reduced, thereby improving the filtration efficiency. The good pulp mixed in the water is discharged through the good pulp pipeline 33. After the discharge is completed, only clear water and the waste residue in the sieve drum 81 remain in the cylinder body.

[0031] After closing the good pulp pipeline 33, the slag discharge pipeline 34 is opened. By adjusting the contraction of the inner rod of the hydraulic rod 92, the conical platform 93 is driven to descend, so that the second clamping block 94 is disengaged from the clamping of the second clamping groove 85, thereby exposing the lower opening of the sieve drum 81. At this time, the waste residue in the sieve drum 81 falls and mixes with the water flow, and then is discharged from the slag discharge pipeline 34. The water injection pipeline 32 continuously injects water, which can not only directly clean the inner wall of the cylinder body, but also directly wash the inner and outer walls of the sieve drum 81, eliminating the pressure of manual disassembly and cleaning and improving the cleaning efficiency.

[0032] On the other hand, the contraction of the inner rod of the hydraulic rod 52 causes the rotating cylinder 46 to descend and reset. At this time, each dredging rod 62 elastically expands and contracts through the spring 63, and conducts work when passing through each sieve hole, so as to eject the residual waste and fibers in the sieve hole. At this time, the height of the funnel 45 is lower than that of the water injection pipe 32, and the water flows from the funnel 45 into the rotating cylinder 46. Through the continuous rotation of the rotating cylinder 46, the cutter 47 is prompted to stir the water to improve the cleaning quality, and the residual waste and fibers are mixed with the water and discharged from the slag discharge pipe 34, further improving the thoroughness of cleaning after the use of the device in this case.

[0033] After the cleaning is completed, the inner rod of the hydraulic rod 92 rises to push the conical platform 93 to insert into the sieve drum 81 to reset. The defibering part 4, the interlocking part 5, the anti-blocking part 6, and the slag discharging part 9 can all be reset in time when the cleaning is completed, and directly start the next feeding operation. The continuity between processes is strong, saving time and further improving the efficiency of pulp processing.

[0034] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A pulp pressure regulating screen, characterized in that: include: Base (1); A slag remover (2) mounted on the base (1); A pipeline part (3) is arranged on the slag remover (2) and is used for mixing and injecting pulp tail slurry and water and for processing and discharging good pulp and waste slag; A fiber removal section (4), installed in the cleaner (2), for preferentially shredding long fibers in the pulp; A locking portion (5) is installed on the fiber removal portion (4) and is used to link the operation of the screen drum and release the linkage operation of the screen drum; An anti-blocking part (6) is installed on the fiber removal part (4) and is used to self-adapt to each sieve hole to perform dredging work; A pulp screening unit (8) is arranged inside the slag remover (2) and is used for rotating, separating and filtering good pulp and waste slag; A slag discharge portion (9) is mounted on the base (1) and extends into the slag remover (2), and is used to automatically discharge the filtered waste slag.

2. A pulp pressure regulating screen according to claim 1, characterized in that: The slag remover (2) comprises a cylinder body and a top cover, the pipeline part (3) comprises a tailing slurry pipeline (31), the tailing slurry pipeline (31) is connected and installed on the top cover of the slag remover (2), and a water injection pipeline (32), a good slurry pipeline (33) and a slag discharge pipeline (34) are connected and installed on the cylinder body of the slag remover (2).

3. A pulp pressure regulating screen according to claim 2, characterized in that: The defibering section (4) comprises a frame (41), the frame (41) being mounted on the top of a top cover of the slag remover (2), a motor (42) being mounted on the frame (41), an output shaft of the motor (42) being fixedly connected to a rotating shaft (43), the rotating shaft (43) slidingly passing through the top cover of the slag remover (2) and extending into the cylinder body of the slag remover (2), a bracket (44) being fixedly sleeved on an extended end of the rotating shaft (43), a funnel (45) being fixedly connected to an end of the bracket (44), a lower opening of the funnel (45) being fixedly connected to a rotating drum (46), eight cutters (47) being connected around the inner wall of the rotating drum (46), and the eight cutters (47) being arranged in a staggered manner.

4. A pulp pressure regulating screen according to claim 3, characterized in that: The interlocking portion (5) comprises two L-plates (51), the two L-plates (51) are symmetrically mounted on the top of the frame (41), the two L-plates (51) are fixedly connected to a hydraulic rod 1 (52), the outer rods of the two hydraulic rods 1 (52) are mounted on the top of the top cover of the slag remover (2), a clamping ring 1 (53) is fixedly sleeved on the outer wall of the bottom end of the rotating drum (46), and a clamping block 1 (54) is connected around the top of the clamping ring 1 (53).

5. A pulp pressure regulating screen according to claim 4, characterized in that: The anti-blocking portion (6) comprises a rod sleeve (61), the rod sleeve (61) being fixedly connected to the inner wall of the bottom end of the rotating drum (46), the inner wall of the rod sleeve (61) being slidably connected to a dredging rod (62), the end of the dredging rod (62) slidably passing through the rotating drum (46), and a spring (63) being elastically connected between the dredging rod (62) and the inner wall of the rod sleeve (61).

6. A pulp pressure regulating screen according to claim 5, characterized in that: Two limit grooves (7) are symmetrically mounted on the inner wall of the cylinder body of the slag remover (2); the pulp screening part (8) comprises a screen drum (81); a limit ring (82) is fixedly sleeved on the top outer wall of the screen drum (81); the screen drum (81) is rotatably connected in the two limit grooves (7) via the limit ring (82); a second clamping ring (83) is fixedly connected to the top inner wall of the screen drum (81); a first clamping groove (84) corresponding to the first clamping block (54) is formed at the bottom of the second clamping ring (83); and a second clamping groove (85) is circumferentially connected to the bottom inner wall of the screen drum (81).

7. A pulp pressure regulating screen according to claim 6, characterized in that: The rotating drum (46) is slidably connected to the inner wall of the second clamping ring (83) and extends into the screen drum (81). The number of the anti-blocking parts (6) corresponds to the number of screen holes around the screen drum (81). The end of the dredging rod (62) in each of the anti-blocking parts (6) slides through the corresponding screen hole. The outer wall of the upper opening of the funnel (45) is slidably connected to the inner wall of the cylinder body of the slag remover (2). The first clamping ring (53) is slidably connected to the inner wall of the screen drum (81).

8. The pulp pressure regulating screen according to claim 7, characterized in that: The slag discharge part (9) comprises a rod frame (91), the rod frame (91) is mounted on the top of the inner wall of the base (1), a second hydraulic rod (92) is mounted in the rod frame (91), an inner rod of the second hydraulic rod (92) slides through the base (1) and extends into the cylinder body of the slag remover (2), an inner rod end of the second hydraulic rod (92) is rotatably connected to a cone (93), and a second clamping block (94) is circumferentially connected to the top of the cone (93).

9. A pulp pressure regulating screen according to claim 8, characterized in that: The number of the second clamping blocks (94) corresponds to the number of the second clamping slots (85); the frustum (93) is plugged into the inner wall of the bottom end of the screen drum (81); and each second clamping block (94) is clamped with the corresponding second clamping slot (85).

10. The pulp pressure regulating screen according to claim 9, characterized in that: The bottom of the first clamping ring (53) fits with the top of the second clamping groove (85), the conical end of the cone (93) extends toward the inside of the drum (46), the water injection pipe (32) and the good pulp pipe (33) are located on the same side, the top and bottom of the cylinder body of the slag remover (2) are connected, and the cylinder body of the slag remover (2) is fixedly connected to the top of the outer wall of the base (1).

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