Poplar chemi-mechanical pulp wastewater treatment device with fiber collection function

Abstract

The invention relates to the technical field of water pollution treatment, in particular to a poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function. Comprising a cover body rotationally connected to a tank body, the tank body is provided with a liquid injection pipe communicated with the interior of the tank body, an inner cylinder is fixedly connected in the tank body, the inner cylinder is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a threaded rod, the threaded rod is in threaded connection with a filter plate, and a plurality of through holes are formed in the filter plate. The filter plate is slidably connected with a dredging plate, and the dredging plate is provided with dredging parts with the same number as the through holes. According to the device, fibers are blocked on the upper side of the filter plate through the filter plate, and a flocculant is injected into the lower side of the filter plate, so that the probability that the flocculant is blocked by the fibers in the process of injecting the flocculant into wastewater and reacting with the wastewater is reduced, the influence of the fibers on the flocculant is reduced while the fibers are collected, and the flocculation reaction efficiency of the wastewater is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water pollution treatment, and particularly relates to a poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function. Background Art

[0002] Poplar chemi-mechanical pulp wastewater refers to the wastewater generated during the production of chemical mechanical pulp (such as APMP or BCTMP process) using poplar as raw material. The high-concentration organic wastewater generated during the production of poplar chemi-mechanical pulp contains a large amount of fine fibers (usually with a content of 1%-3%). These fibers are both recyclable resources and key factors affecting the efficiency of wastewater treatment. The traditional treatment process mainly has the drawback that the fibers interfere with the flocculation reaction: that is, most existing equipment adopts the methods of static filtration or directly adding flocculants to the wastewater. During the process of wastewater treatment, the fibers in the wastewater will wrap the flocculant molecules (such as PAC, PAM), resulting in the formation of flocculant-fiber complexes in the wastewater, which will reduce the effective utilization rate of the flocculant, leading to problems such as poor flocculation effect, slow sedimentation speed, and high sludge moisture content, and further affecting the efficiency of the wastewater flocculation reaction. Summary of the Invention

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

[0004] The technical solution is: a poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function, including a cover body rotatably connected to a tank body. A sewage outlet is arranged on the lower side of the tank body, and a liquid discharge port is arranged on the tank body. The tank body is provided with a liquid injection pipe communicated with its interior. An inner cylinder is fixedly connected inside the tank body, and a motor is fixedly connected to the inner cylinder. The output shaft of the motor is fixedly connected with a threaded rod, and the threaded rod is threadedly connected with a filter plate slidably connected to the inner cylinder. The liquid injection pipe passes through the inner cylinder and the filter plate. A plurality of through holes are arranged on the filter plate. A dredging plate is slidably connected to the filter plate. A plurality of flow grooves are arranged on the dredging plate. The dredging plate is provided with dredging parts with the same number as the through holes. The dredging parts are used for dredging the through holes. A trigger ring is fixedly connected to the dredging plate. A first electric control push rod is fixedly connected to the tank body. The telescopic end of the first electric control push rod is fixedly connected with a trigger block passing through the tank body and the inner cylinder. The trigger block is used for squeezing the trigger ring to move.

[0005] Furthermore, first flexible covers and second flexible covers are respectively fixedly connected to the upper and lower sides of the filter plate. 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 for wrapping the threaded rod.

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

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

[0008] Further, a second electric control push rod is fixedly connected to the upper part of the inner cylinder, a water pressing plate is fixedly connected to the telescopic end of the second electric control push rod, there is a gap between the water pressing plate and the inner cylinder, the liquid injection pipe passes through the water pressing plate, the water pressing plate is located above the trigger block, the tank body is provided with a discharge port, and a blocking block is installed at the discharge port of the tank body, and the blocking block is located between the filter plate and the water pressing plate.

[0009] Further, the vertical distance between the water pressing 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, and A > B.

[0010] Further, a number of circumferentially distributed water guide grooves are provided on the lower side of the water pressing plate.

[0011] Further, a conical surface is provided on the upper side of the water pressing plate.

[0012] Further, a chamber is provided between the tank body and the inner cylinder, the inner cylinder is provided with a drain port communicating with the chamber, the axis of the drain port of the inner cylinder is collinear with the axis of the liquid discharge port, an electric control valve is installed at the drain port 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, the trigger block passes through the flexible ring, and a sliding ring is slidably connected in the chamber between the tank body and the inner cylinder, and the sliding ring is used to squeeze the flexible ring, and the sliding ring is located below the flexible ring.

[0013] Further, an extrusion plate is fixedly connected to the trigger ring, and a number of conical holes are provided on the extrusion plate, and the aperture of the conical holes gradually decreases from top to bottom.

[0014] The beneficial effects achieved by the present invention with the above structure are as follows: The present invention blocks fibers on its upper side through a filter plate and injects a flocculant below the filter plate, so as to reduce the probability that the flocculant is blocked by fibers during the process of injecting into 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 fibers stuck in the through holes are pushed out by the dredging part to clean the through holes, so as to reduce the probability that the wastewater treatment efficiency is affected due to the through holes being blocked by fibers. The fibers located between the dredging plate and the water pressing plate are extruded by the water pressing plate to squeeze out the water in the fibers. When the dredging part moves downward, the dredging part disengages from the through hole, and the wastewater extruded from the fibers flows downward through the through hole into the tank body, so as to reduce the water content in the fibers, reduce the cost of subsequent drying treatment of the fibers, improve the utilization rate of the fibers and wastewater, and thereby improve the efficiency of wastewater treatment. The wastewater is reciprocally extruded by the extrusion plate to move, so that the water flow in the tank body is continuously pressured and shaken, thereby improving the mixing efficiency of the flocculant and water. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0019] Figure 5 is an exploded three-dimensional structure diagram of the filter plate, dredging plate and trigger ring of the present invention;

[0020] Figure 6 is a three-dimensional structure diagram of the water pressing plate of the present invention.

[0021] Reference numerals in the drawings: 1 - tank body, 101 - cover body, 102 - liquid discharge port, 103 - liquid injection pipe, 2 - inner cylinder, 3 - motor, 4 - threaded rod, 5 - filter plate, 501 - through hole, 6 - dredging plate, 601 - flow-through groove, 602 - dredging part, 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 - water pressing plate, 1301 - water guide groove, 14 - blocking block, 15 - electric control valve, 16 - flexible ring, 17 - sliding ring, 18 - extrusion plate, 19 - frustum-shaped hole. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be specifically described below with reference to the accompanying drawings.

[0023] Example 1

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

[0025] As Figures 1-5 shown, it includes a cover body 101 rotatably connected to the upper side of the tank body 1. There is a control terminal (not shown in the figure) outside the tank body 1. A sewage discharge port for discharging flocculants is provided at the lower side of the tank body 1. A liquid discharge port 102 is provided at the lower part on the right side of the tank body 1. Initially, the liquid discharge port 102 is in a closed state. When it is necessary to collect the treated wastewater, the liquid discharge port 102 is opened, and the treated wastewater is discharged through the liquid discharge port 102. The tank body 1 is equipped with a liquid injection pipe 103 communicating with its interior. An inner cylinder 2 is fixedly connected inside the tank body 1. An electric motor 3 electrically connected to the control terminal is fixedly connected to the inner cylinder 2. A threaded rod 4 is fixedly connected to the output shaft of the electric motor 3. The threaded rod 4 is threadedly connected to a filter plate 5 slidably connected to the inner cylinder 2. The liquid injection pipe 103 passes through the inner cylinder 2 and the filter plate 5, and the lower end of the liquid injection pipe 103 is flush with the lower side surface of the filter plate 5. The liquid injection pipe 103 is used to inject liquid flocculant into the tank body 1. The liquid injection pipe 103 is a flexible pipe. During the up and down movement of the filter plate 5, the lower end of the liquid injection pipe 103 is driven to move up and down by the filter plate 5, adjusting the position where the liquid injection pipe 103 injects the liquid flocculant. During the rotation of the threaded rod 4 driven by the output shaft of the electric motor 3, the threaded rod 4 drives the filter plate 5 to move up and down. A number of through holes 501 are provided on the filter plate 5. A dredging plate 6 is slidably connected to the filter plate 5. A number of flow channels 601 are provided on the dredging plate 6. The dredging plate 6 is provided with dredging parts 602 having the same number as the through holes 501. The diameter of the dredging parts 602 is the same as the diameter of the through holes 501, and the height of the dredging parts 602 is the same as the depth of the through holes 501. When using this device, poplar chemi-mechanical pulp wastewater (hereinafter simply referred to as wastewater) is injected above the filter plate 5. The wastewater flows downward through the through holes 501 and the flow channels 601 into the lower part inside the tank body 1. The filter plate 5 blocks the fibers in the wastewater. When the dredging parts 602 move relative to the adjacent through holes 501, the dredging parts 602 block and dredge the through holes 501. A trigger ring 7 is fixedly connected to the dredging plate 6. A first electric control push rod 8 electrically connected to the control terminal is fixedly connected to the tank body 1. The telescopic end of the first electric control push rod 8 is fixedly connected with a trigger block 9 through an 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 dredging plate 6 to move upward relative to the filter plate 5, causing the dredging parts 602 to move relative to the adjacent through holes 501.

[0026] As Figure 3 And Figure 4As shown in the figure, the upper and lower sides of the filter plate 5 are fixedly connected with a first flexible cover 10 and a second flexible cover 11 respectively. The first flexible cover 10 is fixedly connected with the inner cylinder 2, and the second flexible cover 11 is fixedly connected with 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 under pressure, 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 an operator needs to use the device, the operator opens the cover body 101 and injects poplar chemical pulp wastewater (hereinafter simply referred to as wastewater) into the tank body 1. The wastewater flows downward through the through hole 501 and the flow channel 601 into the lower part of the tank body 1. The filter plate 5 blocks the fibers in the wastewater. At the same time, the operator starts 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 dredging plate 6.

[0029] During the upward movement of the filter plate 5, the lower part of the liquid injection pipe 103 is driven by the filter plate 5 to move upward. During the upward movement of the lower part of the liquid injection pipe 103, the operator injects the flocculant into the liquid injection pipe 103, so that the flocculant is discharged from the lower end of the liquid injection pipe 103 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, and the flocculant is located on the lower side of the filter plate 5, so as to reduce the probability that the flocculant is blocked by the fibers during the process of injecting into the 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.

[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 control push rod 8 to turn on. The telescopic end of the first electric control 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. The trigger ring 7 drives the dredging plate 6 to move upward, so that the dredging plate 6 and the filter plate 5 generate relative movement, and the dredging part 602 and the through hole 501 generate relative movement. The dredging part 602 is inserted into the through hole 501 to push out the fibers stuck in the through hole 501 and clean the through hole 501, so as to reduce the probability that the wastewater treatment efficiency is affected due to the blockage of the through hole 501 by the fibers.

[0031] After the wastewater flocculation treatment is completed, the control terminal controls the telescopic end of the first electric push rod 8 to reset. The telescopic end of the first electric 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 push rod 8. The operator opens the cover body 101 to collect the fibers, discharges the wastewater through the liquid discharge port 102, collects the treated wastewater in the tank body 1, discharges the flocculants through the sewage discharge port of the tank body 1, and 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, and the threaded rod 4 drives the filter plate 5 to move and reset.

[0032] Embodiment 2

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

[0034] As Figure 3 、 Figure 4 shown in Figure 6 As shown in the figure, a second electric push rod 12 electrically connected to the control terminal is fixedly connected to the upper part of the inner cylinder 2. The telescopic end of the second electric push rod 12 is fixedly connected to a water pressing plate 13. There is a gap between the water pressing plate 13 and the inner cylinder 2. The liquid injection pipe 103 passes through the water pressing plate 13. There is a gap between the water pressing plate 13 and the first flexible cover 10. The water pressing plate 13 is located above the trigger block 9. After the filter plate 5 moves upward to the limit state, the fibers are located between the filter plate 5 and the water pressing plate 13. The telescopic end of the second electric push rod 12 drives the water pressing plate 13 to move downward to squeeze the fibers. The tank body 1 is provided with a discharge port, and a blocking block 14 is installed at the discharge port of the tank body 1. The blocking block 14 is located between the filter plate 5 and the water pressing plate 13. The blocking block 14 is opened, and then the squeezed fibers are collected through the discharge port of the tank body 1. The vertical distance between the water pressing 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, and 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 water pressing plate 13 and the trigger block 9. A plurality of circumferentially distributed water guide grooves 1301 are provided on the lower side of the water pressing plate 13 for guiding the water in the fibers at various positions between the water pressing plate 13 and the trigger block 9 through the water guide grooves 1301. A conical surface is provided on the upper side of the water pressing plate 13 for guiding the squeezed water.

[0035] The specific working principle is as follows:

[0036] After the dredging 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 water pressing plate 13. The operator turns on the second electric control push rod 12 through the control terminal. The telescopic end of the second electric control push rod 12 drives the water pressing plate 13 to move downward. The water pressing plate 13 squeezes the fiber located between the filter plate 5 and the water pressing plate 13, and extrudes the water in the fiber. Part of the extruded waste water flows out to the upper side of the water pressing plate 13 through the gap between the water pressing plate 13 and the first flexible cover 10. The operator controls the telescopic end of the first electric control push rod 8 to reciprocate through the control terminal. The telescopic end of the first electric control push rod 8 drives the trigger block 9 to reciprocate through the L-shaped rod, so that the trigger ring 7 reciprocates up and down. The trigger ring 7 drives the dredging plate 6 to reciprocate up and down. The dredging plate 6 drives all the dredging parts 602 thereon to reciprocate up and down. When the dredging part 602 moves downward, the dredging part 602 disengages from the through hole 501, and the waste water extruded from the fiber flows downward through the through hole 501 into the tank body 1. After the dredging part 602 moves upward, the dredging part 602 pushes out the fiber stuck in the through hole 501 to clean the through hole 501. In this way, the waste water in the fiber is extruded to reduce the water content in the fiber, reduce the cost of subsequent drying treatment of the fiber, improve the utilization rate of the fiber and the waste water, and thus improve the efficiency of the device.

[0037] After the waste water flocculation treatment is completed, the control terminal controls the telescopic end of the second electric control push rod 12 to drive the water pressing plate 13 to reset. At the same time, the control terminal controls the telescopic end of the first electric control push rod 8 to reset. The telescopic 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 blocking block 14, then collects the water-extruded fiber through the discharge port of the tank body 1, discharges the waste water through the liquid discharge port 102, discharges the flocculant through the sewage discharge port of the tank body 1, collects the treated waste water in the tank body 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 turns off the second electric control push rod 12, the first electric control push rod 8 and the motor 3 through the control terminal.

[0038] Embodiment 3

[0039] This embodiment discloses a poplar chemi-mechanical pulp waste water treatment device with a fiber collection function, which is further improved on the basis of Embodiment 2.

[0040] Such as Figures 2-4As shown in the figure, a chamber is provided between the tank body 1 and the inner cylinder 2. The inner cylinder 2 is provided with a drain port communicating with the chamber. The axis of the drain port of the inner cylinder 2 is collinear with the axis of the liquid discharge port 102. An electric control valve 15 electrically connected to the control terminal is installed at the drain port of the inner cylinder 2. A flexible ring 16 is arranged in the chamber between the tank body 1 and the inner cylinder 2. The liquid 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 electric control valve 15, and the filter plate 5 and the dredging plate 6 move up and down to squeeze the wastewater, so that the wastewater enters 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 below the flexible ring 16.

[0041] As Figures 3-5 shown in the figure, the trigger ring 7 is fixedly connected with an extrusion plate 18. The extrusion plate 18 is provided with a number of frustum-shaped holes 19. During the downward movement of the filter plate 5 and the dredging plate 6, the extrusion plate 18 squeezes the wastewater downward. The aperture of the frustum-shaped hole 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 flocculation is completed, the operator controls the reciprocating movement of the telescopic end of the first electric control push rod 8 through the control terminal. The telescopic end of the first electric control push rod 8 drives the trigger block 9 to reciprocate through the L-shaped rod, causing the trigger ring 7 to reciprocate up and down. The trigger ring 7 drives the dredging plate 6 and the extrusion plate 18 to reciprocate up and down. When the extrusion plate 18 moves downward, the extrusion plate 18 squeezes the wastewater downward. At the same time, the operator opens the electric control valve 15 through the control terminal, so that the wastewater is squeezed by the extrusion plate 18 into 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. When the extrusion plate 18 moves upward, the flexible ring 16 resets, causing the sliding ring 17 to reset. In this way, the water flow in the tank body 1 is continuously pressed and shaken, so as to improve the mixing efficiency of the flocculant and water.

[0044] After the wastewater flocculation treatment is completed, the control terminal controls the telescopic end of the second electric push rod 12 to drive the water pressing plate 13 to reset, closes the second electric push rod 12 through the control terminal. At the same time, the control terminal controls the telescopic end of the first electric push rod 8 to reset. The telescopic end of the first electric 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 first electric push rod 8 is closed through the control terminal. The operator opens the blocking block 14, and then collects the squeezed fibers through the discharge port of the tank body 1. The liquid is discharged to the liquid discharge port 102 through the electric control valve 15, and the wastewater is discharged through the liquid discharge port 102 to collect the treated wastewater in the tank body 1. The flocculants are discharged through the sewage discharge port of the tank body 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 replacement or partial improvement made under the spirit and principle of the present invention will be regarded as within the protection scope of the present invention.

Claims

1. A poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function, including a cover body (101) rotatably connected to a tank body (1), a sewage discharge port is arranged on the lower side of the tank body (1), and a liquid discharge port (102) is arranged on the tank body (1), characterized in that, The tank body (1) is provided with a liquid injection pipe (103) communicating with its interior. An inner cylinder (2) is fixedly connected inside the tank body (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). The threaded rod (4) is threadedly connected to a filter plate (5) slidably connected to the inner cylinder (2). The liquid injection pipe (103) passes through the inner cylinder (2) and the filter plate (5). A plurality of through holes (501) are provided on the filter plate (5). A dredging plate (6) is slidably connected to the filter plate (5). The dredging plate (6) is provided with a plurality of flow grooves (601). The dredging plate (6) is provided with dredging parts (602) having the same number as the through holes (501). The dredging parts (602) are used for dredging the through holes (501). A trigger ring (7) is fixedly connected to the dredging plate (6). The tank body (1) is fixedly connected with a first electric control push rod (8). The telescopic end of the first electric control push rod (8) is fixedly connected with a trigger block (9) passing through the tank body (1) and the inner cylinder (2). The trigger block (9) is used for squeezing the trigger ring (7) to move.

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

3. The poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function according to claim 2, characterized in that, One end of the liquid injection pipe (103) located inside the tank body (1) is fixedly connected to the filter plate (5). The lower end of the liquid injection pipe (103) is flush with the lower side surface of the filter plate (5).

4. A poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function according to claim 1, characterized in that, The diameter of the dredging part (602) is the same as that of the through hole (501). The height of the dredging part (602) is the same as the depth of the through hole (501). The dredging part (602) is used for blocking the through hole (501).

5. The poplar chemical pulp wastewater treatment device with a fiber collection function according to claim 3, characterized in that, A second electric control push rod (12) is fixedly connected to the upper part of the inner cylinder (2). The telescopic end of the second electric control push rod (12) is fixedly connected to a water pressing plate (13). There is a gap between the water pressing plate (13) and the inner cylinder (2). The liquid injection pipe (103) passes through the water pressing plate (13). The water pressing plate (13) is located above the trigger block (9). The tank body (l) is provided with a discharge port. A blocking block (14) is installed at the discharge port of the tank body (1). The blocking block (14) is located between the filter plate (5) and the water pressing plate (13).

6. The poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function according to claim 5, characterized in that, The vertical distance between the water pressing plate (13) and the trigger block (9) is A. The distance between the upper surface of the filter plate (5) and the lower surface of the trigger ring (7) is B. A > B.

7. The pulp wastewater treatment device for poplar with fiber collection function according to claim 6, characterized in that, A plurality of circumferentially distributed water guide grooves (1301) are provided on the lower side of the water pressing plate (13).

8. A poplar chemical pulp wastewater treatment device with a fiber collection function according to claim 7, characterized in that, The upper side of the water pressing plate (13) is provided with a conical surface.

9. The pulp wastewater treatment device for poplar with fiber collection function according to claim 5, 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 port communicating with this chamber. The axis of the drain port of the inner cylinder (2) is collinear with the axis of the liquid discharge port (102). An electric control valve (15) is installed at the drain port of the inner cylinder (2). A flexible ring (16) is arranged in the chamber between the tank body (1) and the inner cylinder (2). The liquid 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). The sliding ring (17) is used to squeeze the flexible ring (16), and the sliding ring (17) is located below the flexible ring (16).

10. A poplar chemi-mechanical pulp wastewater treatment device with a fiber collection function according to claim 1, characterized in that, An extrusion plate (18) is fixedly connected to the trigger ring (7). The extrusion plate (18) is provided with a plurality of frustum-shaped holes (19), and the aperture of the frustum-shaped holes (19) gradually decreases from top to bottom.

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