Gradient filtering device and method for down suspension pretreatment

Abstract

The invention discloses a gradient filtering device and method for down feather suspension pretreatment, and belongs to the field of liquid filtering. A gradient filtering device for down feather suspension pretreatment comprises an installation frame, a feeding bin and a filtering cylinder which are arranged on the installation frame, and further comprises a driving motor which is fixedly connected to the top of the feeding bin, the output end of the driving motor is connected with a screen cylinder, and an anti-blocking driving mechanism connected with the conveying end of the driving motor is arranged in the feeding bin; the filter drum is used for conveying liquid into the filter drum and conveying gas from outside to inside along the screen drum; the filter element column is fixedly connected to the interior of the filter cartridge, a reverse pulse cleaner is arranged in the filter element column, and an adjusting mechanism is arranged between the filter element column and the reverse pulse cleaner and used for adjusting the relative position between the reverse pulse cleaner and the filter element column; the down feather suspension filtering device can solve the problems that down feather suspension filtering is prone to causing blockage, filtering efficiency is low and cost is high.

Claims

1. A gradient filtration device for pre-treatment of down suspension, comprising a mounting frame (1) and a feed bin (2) and a filter cartridge (24) arranged on the mounting frame (1), characterized in that: Also includes: A drive motor (3) is fixedly connected to the top of the feed bin (2); a sieve drum (5) is connected to the output end of the drive motor (3); an anti-blocking drive mechanism connected to the delivery end of the drive motor (3) is provided inside the feed bin (2) for delivering liquid into the filter drum (24) and delivering gas along the outside of the sieve drum (5) to the inside; A filter cartridge column (34) is fixedly connected to the interior of the filter cartridge (24); a reverse pulse cleaner (36) is disposed inside the filter cartridge column (34); and an adjustment mechanism is disposed between the filter cartridge column (34) and the reverse pulse cleaner (36) for adjusting the relative position between the reverse pulse cleaner (36) and the filter cartridge column (34); A direction-changing mechanism is arranged inside the reverse pulse cleaner (36); the direction-changing mechanism is connected to the anti-blocking driving mechanism via a pipeline and is used to drive and adjust the moving direction of the reverse pulse cleaner (36).

2. A gradient filtration device for pretreatment of down suspension according to claim 1, characterized in that: The anti-blocking drive mechanism comprises a first reciprocating screw (7) fixedly connected to the output end of the drive motor (3); a screw conveying rod (8) is fixedly connected to the end of the first reciprocating screw (7) away from the screen drum (5); a bracket (9) is fixedly connected to the inner wall of the feed bin (2) near the first reciprocating screw (7); a matching slider (10) is provided on the first reciprocating screw (7); a compression rod (11) is fixedly connected between the slider (10), the bracket (9) and the inner wall of the feed bin (2); The bottom of the feed bin (2) is provided with a discharge port (4), the spiral conveying rod (8) is in contact with the inner wall of the discharge port (4), the interior of the slider (10) is provided with a protrusion matching the first reciprocating screw (7), and a limit ring (6) slidably connected to the screen drum (5) is fixedly connected to the inner wall of the feed bin (2).

3. A gradient filtration device for pretreatment of down suspension according to claim 2, characterized in that: It also includes a driving wheel (12) fixedly connected to the output end of the driving motor (3), a second reciprocating screw (13) symmetrically rotatably connected between the inner wall of the feed bin (2) and the limit ring (6), a driven wheel (14) fixedly connected to one end of the second reciprocating screw (13) close to the driving wheel (12), a belt (15) sleeved between the driving wheel (12) and the driven wheel (14), and a movable ring (16) provided on the second reciprocating screw (13). The movable ring (16) is provided with a connecting groove (17) inside, and a jet port (18) connected to the connecting groove (17) is provided on a side of the movable ring (16) close to the screen drum (5), and a plurality of groups of grooves (19) are provided on a side of the movable ring (16) close to the screen drum (5), and a spring (20) is fixedly connected inside the groove (19), and one end of the spring (20) close to the screen drum (5) is fixedly connected to a mounting seat (21) slidably connected to the groove (19), and a side of the mounting seat (21) away from the spring (20) is rotatably connected to a guide wheel (22).

4. A gradient filtration device for pretreatment of down suspension according to claim 2, characterized in that: The bottom of the filter cartridge (24) is provided with a feed inlet (27), the top of the filter cartridge (24) is provided with a discharge outlet (29), and a water production outlet (30) is provided on a side of the outer wall of the filter cartridge (24) close to the discharge outlet (29). A connecting pipe (28) is provided between the discharge port (4) and the feed port (27), and a folded filter membrane (35) is provided between the inner wall of the filter cartridge (24) and the filter core column (34).

5. A gradient filtration device for pretreatment of down suspension according to claim 3, characterized in that: The regulating mechanism comprises a fixed tooth plate (38) fixedly connected to the filter element column (34); a center hole (37) matching the fixed tooth plate (38) is provided inside the reverse pulse cleaner (36); an arc-shaped groove (39) is provided on one side of the reverse pulse cleaner (36) close to the center hole (37); a driving gear (40) matching the fixed tooth plate (38) is rotatably connected inside the arc-shaped groove (39); The reverse pulse washer (36) is provided with a sealing groove (41) inside, and a wind wheel (42) connected to the shaft end of the driving gear (40) is rotatably connected inside the sealing groove (41). A first air inlet channel (44), a second air inlet channel (45) and an exhaust channel (46) connected to the sealing groove (41) are provided on a side of the reverse pulse washer (36) close to the wind wheel (42). The first air inlet channel (44), the second air inlet channel (45) and the exhaust channel (46) are respectively located on both sides of the sealing groove (41), and the first air inlet channel (44) and the second air inlet channel (45) are respectively located at different positions on the same side of the wind wheel (42). The exhaust channel (46) is connected to the connecting groove (17) through a pipeline.

6. A gradient filtration device for pretreatment of down suspension according to claim 5, characterized in that: It also includes an air inlet (43) disposed in the reverse pulse cleaner (36), the air inlet (43) being in communication with the first air inlet passage (44) and the second air inlet passage (45), a baffle (47) being rotatably connected to one side of the air inlet (43) close to the first air inlet passage (44) and the second air inlet passage (45), an arc-shaped cylinder (48) being symmetrically fixedly connected between the baffle (47) and the inner wall of the air inlet (43), The air inlet (43) and the compression rod (11) are connected via a pipeline, the center of the arc cylinder (48) and the axis of the baffle (47) are located on the same straight line, and a hole matching the end of the baffle (47) is provided inside the reverse pulse cleaner (36), so that the end of the baffle (47) is in a sealed state during the rotation process.

7. A gradient filtration device for pretreatment of down suspension according to claim 6, characterized in that: It also includes mounting grooves (49) symmetrically arranged at both ends of the reverse pulse cleaner (36), a driving cylinder (50) being fixedly connected inside the mounting groove (49), and elastic protrusions (51) being installed on the outer wall of the driving cylinder (50) and the inner wall of the mounting groove (49). The two groups of driving cylinders (50) are connected via a pipeline, the driving cylinders (50) and the grooves (19) are connected via a pipeline, and the two groups of driving cylinders (50) are respectively connected to the two groups of arc cylinders (48) via pipelines.

8. A gradient filtration device for pretreatment of down suspension according to claim 4, characterized in that: An ultrasonic vibrator (31) connected to the mounting frame (1) is disposed outside the filter cartridge (24); a mounting ring (25) is fixedly connected to the outer wall of the filter cartridge (24); a buckle (26) matching the mounting ring (25) is disposed on the mounting frame (1); a filter (33) is fixedly connected to the mounting frame (1); an arc-shaped groove (39) is connected between the inlet end of the filter (33) and the discharge port (29); The buckle (26) comprises a fixed portion and a movable portion, the buckle (26) can be opened and closed by rotating the fixed portion and the movable portion, and a magnetic ratchet structure is adopted at the connection between the fixed portion and the movable portion.

9. A gradient filtration method for pre-treating a down suspension, using a gradient filtration device for pre-treating a down suspension according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: The suspension to be treated is transported into the equipment, and large particles in the suspension are separated by centrifugal separation; Step 2: During the centrifugation process, the liquid is transported and filtered; Step 3: Use ultrasonic and reverse airflow cleaning to prevent the liquid from getting clogged during the filtration process; Step 4: The filtered liquid is then ultrafiltered and collected in a collection tank.

10. A gradient filtration method for pretreatment of down suspension according to claim 9, characterized in that: In step 1, the diameter of the mesh is 300-500 μm; In step 2, the diameter of the filter pores is 10-50 μm; In step three, differential pressure sensors are set on both sides of the liquid filter. When the differential pressure is ≧0.1MPa, the equipment is cleaned with reverse airflow. The cleaning gas is nitrogen, the flushing pressure is 0.5-0.81MPa, and the ultrasonic wave is triggered for 2 seconds in each filtering cycle. In step 4, the diameter of the ultrafiltration pores is 0.22 μm.

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