Poplar machine pulp wastewater treatment device with fiber collection function

Abstract

The present application relates to water pollution treatment technical field, especially to a poplar machine pulp wastewater treatment device with fiber collection function, including the cover body rotationally connected to the jar body, the jar body is installed with the liquid injection pipe communicated with its inside, the inner cylinder is fixedly connected in the jar body, the motor is fixedly connected to the inner cylinder, the output shaft of the motor is fixedly connected with the threaded rod, the filter plate is threadedly connected to the threaded rod, a plurality of through holes are arranged on the filter plate, the filter plate is slidably connected with the dredging plate, the dredging plate is provided with the same number of dredging parts as the number of through holes. The present application blocks the fiber on the upper side of the filter plate, and injects the flocculating agent into the lower side of the filter plate, so as to reduce the probability of the flocculating agent being blocked by the fiber in the process of being injected into the wastewater and reacting with the wastewater, reduce the influence of the fiber on the flocculating agent while collecting the fiber, and further improve the efficiency of the wastewater flocculation reaction.

Description

Technical Field

[0001] This invention relates to the field of water pollution treatment technology, and in particular to a poplar wood chemical pulp wastewater treatment device with fiber collection function. Background Technology

[0002] Poplar chemimechanical pulping wastewater refers to the wastewater generated during the chemimechanical pulping process (such as APMP or BCTMP processes) using poplar as raw material. The high-concentration organic wastewater produced during poplar chemimechanical pulping contains a large amount of fine fibers (typically 1%-3%). These fibers are both recyclable resources and key factors affecting wastewater treatment efficiency. Traditional treatment processes suffer from the drawback of fiber interference with flocculation: existing equipment often uses static filtration or direct addition of flocculants to the wastewater. During wastewater treatment, fibers in the wastewater can encapsulate flocculant molecules (such as PAC and PAM), leading to the formation of flocculant-fiber complexes. This reduces the effective utilization rate of the flocculant, resulting in poor flocculation, slow settling speed, and high sludge moisture content, ultimately affecting the efficiency of the wastewater flocculation reaction. Summary of the Invention

[0003] In order to overcome the shortcomings pointed out in the background art above, the present invention provides a poplar chemimechanical pulp wastewater treatment device with fiber collection function.

[0004] The technical solution is as follows: A poplar chemimetallurgical pulp wastewater treatment device with fiber collection function includes a cover rotatably connected to a tank body, a drain outlet on the lower side of the tank body, a liquid outlet on the tank body, an injection pipe communicating with the interior of the tank body, an inner cylinder fixedly connected to the tank body, a motor fixedly connected to the inner cylinder, a threaded rod fixedly connected to the output shaft of the motor, a filter plate slidably connected to the inner cylinder by the threaded rod, the injection pipe passing through the inner cylinder and the filter plate, a plurality of through holes on the filter plate, a slidable plate slidably connected to the filter plate, a plurality of flow grooves on the slidable plate, and a number of slidable parts equal to the number of through holes on the slidable plate for slidable drainage of the through holes, a trigger ring fixedly connected to the slidable plate, a first electrically controlled push rod fixedly connected to the tank body, and a trigger block passing through the tank body and the inner cylinder fixedly connected to the telescopic end of the first electrically controlled push rod via an L-shaped rod, the trigger block being used to compress the trigger ring to move.

[0005] Furthermore, a first flexible cover and a second flexible cover are fixedly connected to the upper and lower sides of the filter plate, respectively. The first flexible cover is fixedly connected to the inner cylinder, and the second flexible cover is fixedly connected to the tank body. Both the first flexible cover and the second flexible cover are used to wrap the threaded rod.

[0006] Furthermore, one end of the injection pipe located inside the tank is fixedly connected to the filter plate, and the lower end of the injection pipe is flush with the lower side of the filter plate.

[0007] Furthermore, the diameter of the unblocking part is the same as the diameter of the through hole, the height of the unblocking part is the same as the depth of the through hole, and the unblocking part is used to block the through hole.

[0008] Furthermore, a second electrically controlled push rod is fixedly connected to the upper part of the inner cylinder, and a pressure plate is fixedly connected to the telescopic end of the second electrically controlled push rod. There is a gap between the pressure plate and the inner cylinder. The injection pipe passes through the pressure plate. The pressure plate is located above the trigger block. The tank body is provided with a discharge port. A sealing block is installed at the discharge port of the tank body. The sealing block is located between the filter plate and the pressure plate.

[0009] Furthermore, the vertical distance between the pressure plate and the trigger block is A, and the distance between the upper surface of the filter plate and the lower surface of the trigger ring is B, where A > B.

[0010] Furthermore, the lower side of the pressure plate is provided with several circumferentially distributed water guide grooves.

[0011] Furthermore, a frustum surface is provided on the upper side of the pressure plate.

[0012] Furthermore, a chamber is provided between the tank body and the inner cylinder, and the inner cylinder is provided with a drain outlet communicating with the chamber. The axis of the drain outlet of the inner cylinder is collinear with the axis of the liquid discharge port. An electrically controlled valve is installed at the drain outlet of the inner cylinder. A flexible ring is provided in the chamber between the tank body and the inner cylinder. The liquid injection pipe passes through the flexible ring, and the trigger block passes through the flexible ring. A sliding ring is slidably connected in the chamber between the tank body and the inner cylinder. The sliding ring is used to squeeze the flexible ring, and the sliding ring is located on the lower side of the flexible ring.

[0013] Furthermore, the trigger ring is fixedly connected to a compression plate, and the compression plate is provided with a plurality of frustum holes, the diameter of which gradually decreases from top to bottom.

[0014] The beneficial effects of the present invention using the above structure are as follows: The present invention uses a filter plate to block the fibers on its upper side and injects flocculant into the lower side of the filter plate, thereby reducing the probability that the flocculant will be blocked by the fibers during the process of injecting wastewater and reacting with the wastewater. While collecting the fibers, the influence of the fibers on the flocculant is reduced, thereby improving the efficiency of the wastewater flocculation reaction. The unblocking part pushes out the fibers stuck in the through holes, cleaning the through holes and reducing the probability that the wastewater treatment efficiency will be affected by the through holes being blocked by fibers. The water pressure plate squeezes the fibers located between the unblocking plate and the water pressure plate, squeezing out the water in the fibers. When the unblocking part moves downward, the unblocking part disengages from the through holes, and the wastewater squeezed out of the fibers flows downward into the tank through the through holes, thereby reducing the water content in the fibers, reducing the cost of subsequent fiber drying, improving the utilization rate of fibers and wastewater, and thus improving the efficiency of wastewater treatment. The squeezing plate reciprocates to squeeze the wastewater, causing the water flow in the tank to be continuously pressurized and shaken, thereby improving the mixing efficiency of flocculant and water. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural cross-sectional view of the tank body of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the motor of the present invention;

[0018] Figure 4 This is a three-dimensional structural diagram of the threaded rod of the present invention;

[0019] Figure 5 This is an exploded three-dimensional view of the filter plate, unblocking plate, and trigger ring of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the water pressure plate of the present invention.

[0021] Reference numerals: 1-Tank body, 101-Cover body, 102-Drain port, 103-Injection pipe, 2-Inner cylinder, 3-Motor, 4-Threaded rod, 5-Filter plate, 501-Through hole, 6-Draining plate, 601-Flow channel, 602-Draining section, 7-Trigger ring, 8-First electric control push rod, 9-Trigger block, 10-First flexible cover, 11-Second flexible cover, 12-Second electric control push rod, 13-Pressure plate, 1301-Water guide channel, 14-Blocking block, 15-Electrically controlled valve, 16-Flexible ring, 17-Sliding ring, 18-Squeezing plate, 19-Frustum hole. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] Example 1

[0024] This embodiment discloses a poplar chemimechanical pulp wastewater treatment device with fiber collection function, which is used to collect fibers during the treatment of poplar chemimechanical pulp wastewater.

[0025] like Figures 1-5 As shown, the tank includes a cover 101 rotatably connected to the upper side of the tank body 1. A control terminal (not shown) is located on the outside of the tank body 1. A drain outlet for discharging flocculants is located on the lower side of the tank body 1. A drain port 102 is located on the lower right side of the tank body 1. Initially, the drain port 102 is closed. When it is necessary to collect the treated wastewater, the drain port 102 is opened, and the treated wastewater is discharged through the drain port 102. An injection pipe 103 is installed in the tank body 1 and communicates with its interior. An inner cylinder 2 is fixedly connected inside the tank body 1, and a motor electrically connected to the control terminal is fixedly connected to the inner cylinder 2. 3. A threaded rod 4 is fixedly connected to the output shaft of motor 3. The threaded rod 4 is threadedly connected to a filter plate 5 that is slidably connected to the inner cylinder 2. The injection pipe 103 passes through the inner cylinder 2 and the filter plate 5. The lower end of the injection pipe 103 is flush with the lower side of the filter plate 5. The injection pipe 103 is used to inject liquid flocculant into the tank 1. The injection pipe 103 is a flexible hose. During the up-and-down movement of the filter plate 5, the filter plate 5 drives the lower end of the injection pipe 103 to move up and down, adjusting the position of the injection pipe 103 for injecting liquid flocculant. During the rotation of the threaded rod 4 driven by the output shaft of motor 3, the threaded rod 4 drives... The filter plate 5 moves up and down. The filter plate 5 has several through holes 501. A slidable unblocking plate 6 is connected to the filter plate 5. The unblocking plate 6 has several flow channels 601 and unblocking sections 602, the same number as the through holes 501. The diameter of the unblocking sections 602 is the same as the diameter of the through holes 501, and the height of the unblocking sections 602 is the same as the depth of the through holes 501. When using this device, poplar pulp wastewater (hereinafter referred to as wastewater) is injected onto the upper side of the filter plate 5. The wastewater flows downwards through the through holes 501 and flow channels 601 into the lower part of the tank 1. The filter plate 5 blocks the fibers in the wastewater. When the unblocking part 602 moves relative to the adjacent through hole 501, the unblocking part 602 blocks and unblocks the through hole 501. The unblocking plate 6 is fixedly connected to the trigger ring 7. The tank body 1 is fixedly connected to the first electrically controlled push rod 8 which is electrically connected to the control terminal. The telescopic end of the first electrically controlled push rod 8 is fixedly connected to the trigger block 9 through the L-shaped rod. The trigger block 9 passes through the tank body 1 and the inner cylinder 2. The trigger block 9 is used to squeeze the trigger ring 7 to move, so that the trigger ring 7 drives the unblocking plate 6 to move upward relative to the filter plate 5, so that the unblocking part 602 moves relative to the adjacent through hole 501.

[0026] like Figure 3 and Figure 4As shown, a first flexible cover 10 and a second flexible cover 11 are fixedly connected to the upper and lower sides of the filter plate 5, respectively. The first flexible cover 10 is fixedly connected to the inner cylinder 2, and the second flexible cover 11 is fixedly connected to the tank body 1. Both the first flexible cover 10 and the second flexible cover 11 are used to wrap the threaded rod 4. When the filter plate 5 moves upward, the first flexible cover 10 is compressed and the second flexible cover 11 is stretched. When the filter plate 5 moves downward, the first flexible cover 10 is stretched and the second flexible cover 11 is compressed.

[0027] The specific working principle is as follows:

[0028] When the operator needs to use this device, the operator opens the cover 101 and injects poplar pulp wastewater (hereinafter referred to as wastewater) into the tank 1. The wastewater flows downward into the lower part of the tank 1 through the through hole 501 and the flow channel 601. The filter plate 5 blocks the fibers in the wastewater. At the same time, the operator turns on the motor 3. The output shaft of the motor 3 drives the threaded rod 4 to rotate. The rotation of the threaded rod 4 causes the filter plate 5 to move upward. The filter plate 5 drives the trigger ring 7 to move upward through the unblocking plate 6.

[0029] As the filter plate 5 moves upward, it drives the lower part of the injection pipe 103 to move upward as well. During this upward movement, the operator injects flocculant into the injection pipe 103, allowing it to be discharged through the lower end of the pipe to the lower side of the filter plate 5. At this time, the fibers are blocked on the upper side of the filter plate 5, while the flocculant is located on the lower side. This reduces the probability of the flocculant being blocked by the fibers during the injection and reaction with the wastewater. By collecting the fibers, the impact of the fibers on the flocculant is reduced, thereby improving the efficiency of the wastewater flocculation reaction.

[0030] After the trigger ring 7 moves upward to be flush with the trigger block 9, the control terminal controls the motor 3 to turn off and controls the first electric push rod 8 to turn on. The telescopic end of the first electric push rod 8 extends and drives the trigger block 9 to move through the L-shaped rod. The trigger block 9 squeezes the trigger ring 7 to move upward, and the trigger ring 7 drives the unblocking plate 6 to move upward, so that the unblocking plate 6 and the filter plate 5 move relative to each other. The unblocking part 602 and the through hole 501 move relative to each other. The unblocking part 602 is inserted into the through hole 501 and pushes out the fibers stuck in the through hole 501 to clean the through hole 501, so as to reduce the probability that the wastewater treatment efficiency will be affected due to the through hole 501 being blocked by fibers.

[0031] After the wastewater flocculation treatment is completed, the control terminal controls the extension end of the first electric control push rod 8 to reset. The extension end of the first electric control push rod 8 drives the trigger block 9 to move and reset through the L-shaped rod. After the trigger block 9 is reset, the control terminal closes the first electric control push rod 8. The operator opens the cover 101 to collect the fibers and discharge the wastewater through the drain port 102. The treated wastewater in the tank 1 is collected and the flocculants are discharged through the drain port of the tank 1. The control terminal controls the output shaft of the motor 3 to reverse. The output shaft of the motor 3 drives the threaded rod 4 to reverse. The threaded rod 4 drives the filter plate 5 to move and reset.

[0032] Example 2

[0033] This embodiment discloses a poplar chemimechanical pulp wastewater treatment device with fiber collection function, which is a further improvement on the basis of Embodiment 1.

[0034] like Figure 3 , Figure 4 and Figure 6 As shown, a second electrically controlled push rod 12, electrically connected to the control terminal, is fixedly connected to the upper part of the inner cylinder 2. A pressure plate 13 is fixedly connected to the telescopic end of the second electrically controlled push rod 12. There is a gap between the pressure plate 13 and the inner cylinder 2. The injection pipe 103 passes through the pressure plate 13. There is a gap between the pressure plate 13 and the first flexible cover 10. The pressure plate 13 is located above the trigger block 9. When the filter plate 5 moves upward to its limit state, the fiber is located between the filter plate 5 and the pressure plate 13. The telescopic end of the second electrically controlled push rod 12 drives the pressure plate 13 to move downward, squeezing the fiber. The tank body 1 is provided with a discharge port. A sealing block 14 is installed at the discharge port of the tank body 1. The sealing block 14 is located at the... Between the filter plate 5 and the pressure plate 13, the sealing block 14 is opened, and then the fibers after squeezing water are collected through the discharge port of the tank 1. The vertical distance between the pressure plate 13 and the trigger block 9 is A, and the distance between the upper surface of the filter plate 5 and the lower surface of the trigger ring 7 is B, where A > B. After the trigger block 9 is inserted into the lower side of the trigger ring 7, there is a space for storing fibers between the pressure plate 13 and the trigger block 9. Several circumferentially distributed water guide grooves 1301 are provided on the lower side of the pressure plate 13 to guide the water in the fibers between the pressure plate 13 and the trigger block 9 through the water guide grooves 1301. A frustum is provided on the upper side of the pressure plate 13 to guide the squeezed water.

[0035] The specific working principle is as follows:

[0036] When the unblocking part 602 is inserted into the through hole 501, the through hole 501 is blocked. At this time, the fiber is located between the filter plate 5 and the pressure plate 13. The operator activates the second electrically controlled push rod 12 through the control terminal. The telescopic end of the second electrically controlled push rod 12 drives the pressure plate 13 to move downward. The pressure plate 13 squeezes the fiber located between the filter plate 5 and the pressure plate 13, squeezing out the water in the fiber. Some of the squeezed-out wastewater flows out through the gap between the pressure plate 13 and the first flexible cover 10 to the upper side of the pressure plate 13. The operator controls the telescopic end of the first electrically controlled push rod 8 to move back and forth through the control terminal. The telescopic end of the first electrically controlled push rod 8 drives the trigger block 9 to move back and forth through the L-shaped rod. The movement causes the trigger ring 7 to move up and down repeatedly, which in turn drives the unblocking plate 6 to move up and down repeatedly. The unblocking plate 6 then drives all the unblocking parts 602 on it to move up and down repeatedly. When the unblocking part 602 moves downward, it disengages from the through hole 501, and the wastewater squeezed out of the fiber flows downward through the through hole 501 into the tank 1. After the unblocking part 602 moves upward, it pushes out the fiber stuck in the through hole 501, cleaning the through hole 501. This process is repeated to squeeze out the wastewater from the fiber, thereby reducing the water content in the fiber, reducing the cost of subsequent fiber drying, improving the utilization rate of fiber and wastewater, and thus improving the efficiency of the device.

[0037] After the wastewater flocculation treatment is completed, the control terminal controls the extension end of the second electric control push rod 12 to drive the water pressure plate 13 to reset. At the same time, the control terminal controls the extension end of the first electric control push rod 8 to reset. The extension end of the first electric control push rod 8 drives the trigger block 9 to move and reset through the L-shaped rod. After the trigger block 9 is reset, the operator opens the sealing block 14, and then collects the squeezed fiber through the discharge port of the tank 1, and discharges the wastewater through the drain port 102. The flocculent is discharged through the sewage outlet of the tank 1. The treated wastewater in the tank 1 is collected. The control terminal controls the output shaft of the motor 3 to reverse. The output shaft of the motor 3 drives the threaded rod 4 to reverse. The threaded rod 4 drives the filter plate 5 to move and reset. Finally, the operator closes the second electric control push rod 12, the first electric control push rod 8 and the motor 3 through the control terminal.

[0038] Example 3

[0039] This embodiment discloses a poplar chemimechanical pulp wastewater treatment device with fiber collection function, which is a further improvement on the basis of embodiment 2.

[0040] like Figures 2-4As shown, a chamber is provided between the tank body 1 and the inner cylinder 2. The inner cylinder 2 is provided with a drain outlet communicating with the chamber. The axis of the drain outlet of the inner cylinder 2 is collinear with the axis of the drain port 102. An electrically controlled valve 15 connected to the control terminal is installed at the drain outlet of the inner cylinder 2. A flexible ring 16 is provided in the chamber between the tank body 1 and the inner cylinder 2. The injection pipe 103 passes through the flexible ring 16, and the trigger block 9 passes through the flexible ring 16. A sliding ring 17 is slidably connected in the chamber between the tank body 1 and the inner cylinder 2. After the wastewater flocculation reaction is completed, the control terminal opens the electrically controlled valve 15. The filter plate 5 and the unblocking plate 6 move up and down to squeeze the wastewater, allowing the wastewater to enter the chamber between the tank body 1 and the inner cylinder 2. The wastewater squeezes the sliding ring 17 to move upward, and the sliding ring 17 squeezes the flexible ring 16, causing the flexible ring 16 to deform. The sliding ring 17 is located on the lower side of the flexible ring 16.

[0041] like Figures 3-5 As shown, the trigger ring 7 is fixedly connected to the extrusion plate 18, which has several frustum holes 19. During the downward movement of the filter plate 5 and the unblocking plate 6, the extrusion plate 18 extrudes the wastewater downward. The diameter of the frustum holes 19 gradually decreases from top to bottom, increasing the extrusion force on the water when the extrusion plate 18 moves downward.

[0042] The specific working principle is as follows:

[0043] After the wastewater has completed flocculation, the operator controls the reciprocating movement of the telescopic end of the first electrically controlled push rod 8 via the control terminal. The telescopic end of the first electrically controlled push rod 8 drives the trigger block 9 to reciprocate, causing the trigger ring 7 to move up and down. The trigger ring 7 drives the unblocking plate 6 and the squeezing plate 18 to move up and down. When the squeezing plate 18 moves downward, it squeezes the wastewater downward. At the same time, the operator opens the electrically controlled valve 15 via the control terminal, so that the wastewater is squeezed into the chamber between the tank 1 and the inner cylinder 2 by the squeezing plate 18. The wastewater squeezes the sliding ring 17 to move upward, and the sliding ring 17 squeezes the flexible ring 16, causing the flexible ring 16 to deform. When the squeezing plate 18 moves upward, the flexible ring 16 returns to its original position, causing the sliding ring 17 to return to its original position. This process is repeated, so that the water flow in the tank 1 is continuously pressurized and shaken to improve the mixing efficiency of flocculant and water.

[0044] After the wastewater flocculation treatment is completed, the control terminal controls the extension end of the second electric control push rod 12 to drive the water pressure plate 13 to reset. The control terminal closes the second electric control push rod 12. At the same time, the control terminal controls the extension end of the first electric control push rod 8 to reset. The extension end of the first electric control push rod 8 drives the trigger block 9 to move and reset through the L-shaped rod. After the trigger block 9 is reset, the control terminal closes the first electric control push rod 8. The operator opens the sealing block 14 and then collects the squeezed fiber through the discharge port of the tank 1. The liquid is discharged through the electric control valve 15 to the drain port 102. The wastewater is discharged through the drain port 102. The treated wastewater in the tank 1 is collected and the flocculent is discharged through the sewage outlet of the tank 1. The control terminal controls the output shaft of the motor 3 to reverse. The output shaft of the motor 3 drives the threaded rod 4 to reverse. The threaded rod 4 drives the filter plate 5 to move and reset. Finally, the operator closes the electric control valve 15 and the motor 3 through the control terminal.

[0045] In summary, the invention includes, but is not limited to, the above embodiments. Any equivalent substitutions or partial improvements made under the spirit and principles of this invention shall be considered to be within the protection scope of this invention.

Claims

1. A poplar chemimechanical pulp wastewater treatment device with fiber collection function, comprising a cover (101) rotatably connected to a tank (1), wherein a drain outlet is provided on the lower side of the tank (1), and a liquid outlet (102) is provided on the tank (1), characterized in that, The tank (1) is equipped with an injection pipe (103) communicating with its interior. An inner cylinder (2) is fixedly connected to the tank (1). A motor (3) is fixedly connected to the inner cylinder (2). A threaded rod (4) is fixedly connected to the output shaft of the motor (3). A filter plate (5) is threadedly connected to the inner cylinder (2) and slidably connected to it. The injection pipe (103) passes through the inner cylinder (2) and the filter plate (5). The filter plate (5) is provided with several through holes (501). A slidable cleaning plate (6) is slidably connected to the filter plate (5). (6) A plurality of flow channels (601) are provided. The unblocking plate (6) is provided with unblocking parts (602) in the same number as the number of through holes (501). The unblocking parts (602) are used to unblock the through holes (501). The unblocking plate (6) is fixedly connected to a trigger ring (7). The tank (1) is fixedly connected to a first electric control push rod (8). The telescopic end of the first electric control push rod (8) is fixedly connected to a trigger block (9) that passes through the tank (1) and the inner cylinder (2) through an L-shaped rod. The trigger block (9) is used to squeeze the trigger ring (7) to move. One end of the injection pipe (103) located inside the tank (1) is fixedly connected to the filter plate (5), and the lower end of the injection pipe (103) is flush with the lower side of the filter plate (5). The diameter of the unblocking part (602) is the same as the diameter of the through hole (501), and the height of the unblocking part (602) is the same as the depth of the through hole (501). The unblocking part (602) is used to block the through hole (501). The upper part of the inner cylinder (2) is fixedly connected to a second electrically controlled push rod (12), and the telescopic end of the second electrically controlled push rod (12) is fixedly connected to a pressure plate (13). There is a gap between the pressure plate (13) and the inner cylinder (2). The injection pipe (103) passes through the pressure plate (13). The pressure plate (13) is located above the trigger block (9). The tank body (1) is provided with a discharge port. A sealing block (14) is installed at the discharge port of the tank body (1). The sealing block (14) is located between the filter plate (5) and the pressure plate (13).

2. The poplar chemimechanical pulp wastewater treatment device with fiber collection function according to claim 1, characterized in that, The filter plate (5) is fixedly connected to the upper and lower sides with a first flexible cover (10) and a second flexible cover (11). The first flexible cover (10) is fixedly connected to the inner cylinder (2), and the second flexible cover (11) is fixedly connected to the tank (1). Both the first flexible cover (10) and the second flexible cover (11) are used to wrap the threaded rod (4).

3. The poplar chemimechanical pulp wastewater treatment device with fiber collection function according to claim 1, characterized in that, The vertical distance between the pressure plate (13) and the trigger block (9) is A, and the distance between the upper surface of the filter plate (5) and the lower surface of the trigger ring (7) is B, where A > B.

4. The poplar chemimechanical pulp wastewater treatment device with fiber collection function according to claim 3, characterized in that, The lower side of the pressure plate (13) is provided with several circumferentially distributed water guide channels (1301).

5. A poplar pulp wastewater treatment device with fiber collection function according to claim 4, characterized in that, The upper side of the pressure plate (13) is provided with a frustum.

6. The poplar chemimechanical pulp wastewater treatment device with fiber collection function according to claim 1, characterized in that, A chamber is provided between the tank body (1) and the inner cylinder (2). The inner cylinder (2) is provided with a drain outlet communicating with the chamber. The axis of the drain outlet of the inner cylinder (2) is collinear with the axis of the drain port (102). An electric control valve (15) is installed at the drain outlet of the inner cylinder (2). A flexible ring (16) is provided in the chamber between the tank body (1) and the inner cylinder (2). The injection pipe (103) passes through the flexible ring (16). The trigger block (9) passes through the flexible ring (16). A sliding ring (17) is slidably connected in the chamber between the tank body (1) and the inner cylinder (2). The sliding ring (17) is used to squeeze the flexible ring (16). The sliding ring (17) is located on the lower side of the flexible ring (16).

7. A poplar pulp wastewater treatment device with fiber collection function according to claim 1, characterized in that, The trigger ring (7) is fixedly connected to a pressing plate (18), and the pressing plate (18) is provided with a plurality of frustum holes (19), the diameter of the frustum holes (19) gradually decreasing from top to bottom.

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