CN116099273A - Filtering system and filtering process based on papermaking white water - Google Patents
Filtering system and filtering process based on papermaking white water Download PDFInfo
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- CN116099273A CN116099273A CN202310147840.XA CN202310147840A CN116099273A CN 116099273 A CN116099273 A CN 116099273A CN 202310147840 A CN202310147840 A CN 202310147840A CN 116099273 A CN116099273 A CN 116099273A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
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Abstract
The invention provides a filtering system based on papermaking white water, which comprises two first supporting frames and two second supporting frames, wherein the two first supporting frames are positioned between the two second supporting frames; the filter cartridge is provided with a filter hole, and two ends of the filter cartridge are rotationally connected to the tops of the two first supporting frames; the first driving mechanism is used for driving the filter cartridge to rotate; the two blocking rings are respectively and coaxially connected to the two ends of the filter cartridge, and the middle parts of the blocking rings are provided with through holes; the two ends of the supporting piece are provided with connecting parts, one end of the supporting piece is communicated with a cleaning pipe, and the bottom of the other end of the supporting piece is communicated with a discharge pipe; the water inlet pipe is provided with a plurality of water inlets; the air blowing head is externally connected with an air blower for blowing the air blowing head, an air outlet is formed in the air blowing head, and the air outlet faces downwards to the top of the filter cartridge; the second driving mechanism is used for driving the air blowing head to reciprocate along the length direction of the filter cylinder. The filtering system based on the papermaking white water provided by the invention can ensure that the filtering effect is better.
Description
Technical Field
The invention belongs to the technical field of papermaking, and relates to a filtering system and a filtering process based on papermaking white water.
Background
At present, a chinese patent with a publication number CN112156524a on the market discloses a papermaking white water filtering device and a filtering process, which can filter fibers in white water, so that the white water can be recycled, but in the actual filtering process, although a flushing hole on a stirring sheet can flush the inner wall of a filtering shell, the fibers are flushed down and keep filtering efficiency and effect, because in the flushing process, all or part of the shell is provided with white water, the flushing effect is necessarily blocked or resisted by the white water in the shell, and the flushing effect is poor, that is, part of the fibers still easily adhere to the filtering shell and influence the subsequent filtering, and if the adhering time is too long, the adhered fibers are easily driven by water flow to pass through the filtering shell, and the filtering effect is poor.
Disclosure of Invention
The invention aims to provide a filtering system and a filtering process based on papermaking white water, and aims to solve the problem of poor filtering effect.
In order to solve the technical problems, the invention provides a filtering system based on papermaking white water, which comprises:
the device comprises two first support frames and two second support frames, wherein the two first support frames are positioned between the two second support frames;
the filter cartridge is in a horizontal shape, a filter hole is formed in the filter cartridge, and two ends of the filter cartridge are rotatably connected to the tops of the two first supporting frames;
the first driving mechanism is used for driving the filter cartridge to rotate;
the two blocking rings are respectively and coaxially connected to two ends of the filter cartridge, and a through hole is formed in the middle of each blocking ring;
the supporting piece is in a cover shape with an upward opening, connecting parts are arranged at two ends of the supporting piece, the two connecting parts respectively penetrate through the two passing holes and are respectively connected with the two second supporting frames, one end of the supporting piece is communicated with a cleaning pipe, and the bottom of the other end of the supporting piece is communicated with a discharge pipe;
the water inlet pipe is provided with a plurality of water inlets, part of the water inlet pipe penetrates through the passing opening, all the water inlets are opposite to the inner wall of the filter cartridge, and the water inlet pipe is lower than the bearing piece;
the air blowing head is externally connected with an air blower for blowing the air blowing head, an air outlet is formed in the air blowing head, the air outlet is downwards right opposite to the top of the filter cartridge, and the projection of the air blowing head in the vertical direction is positioned in the projection of the bearing piece in the vertical direction;
and the second driving mechanism is used for driving the blast head to reciprocate along the length direction of the filter cartridge.
The invention is further arranged that the water inlet pipe comprises a water conveying part and a ring-shaped water inlet part communicated with the water conveying part, and the water inlet part penetrates through the two through holes;
the part of the water inlet part passing through the filter cartridge is right opposite to the upstream of the bottom of the filter cartridge, and the longitudinal section of the part of the water inlet part provided with the water inlet is in a circular arc shape with an opening facing the axis of the filter cartridge.
The invention is further characterized in that a plurality of annular separating rings are arranged on the inner wall of the filter cylinder at intervals, the separating rings are coaxial with the filter cylinder, and the outer walls of the separating rings are connected with the inner wall of the filter cylinder;
the side part of the bearing piece is provided with a plurality of abdication ports used for the movable passing of the separation ring.
The invention is further arranged that the first driving mechanism comprises a driving motor fixedly connected to the second supporting frames, a power rod horizontally rotates to penetrate through the two second supporting frames, and the driving motor is connected with the power rod;
a plurality of power teeth are arranged on the outer wall of the power rod, and driven teeth meshed with the power teeth are arranged on the inner ring of the separation ring;
and two sides of the bearing piece are provided with yielding holes for the power rod to movably pass through.
The invention is further arranged that the second driving mechanism comprises a reciprocating screw rod horizontally connected with the two second supporting frames in a rotating way and a guide rod horizontally connected with the two second supporting frames, the guide rod is parallel to the reciprocating screw rod, the air blowing head is movably matched with the reciprocating screw rod, the two guide rods movably penetrate through the air blowing head, and the air blowing head is movably attached to the outer wall of the guide rod;
the driving bevel gear is arranged on the power rod, a third supporting frame is arranged on the outer wall of the second supporting frame, a transmission rod is rotatably arranged on the third supporting frame, one end of the transmission rod is provided with a driven bevel gear meshed with the driving bevel gear, the other end of the transmission rod is provided with a driving worm, and the reciprocating screw rod is provided with a driving worm wheel meshed with the driving worm.
The invention is further arranged that a speed increasing gear box is arranged on the second support frame and comprises an input rod and an output rod, wherein the power rod is connected with the input rod, and the output rod is connected with an impeller of the blower;
the air outlet of the blower is communicated with a flexible air duct, and the free end of the flexible air duct is communicated with the air inlet end of the air outlet.
The invention is further arranged that the air outlet comprises a transmission pipe vertically arranged at the top of the air blowing head, a transmission cavity horizontally arranged in the air blowing head and a plurality of air flow passages communicated with the transmission cavity, wherein the transmission cavity is communicated with the bottom of the transmission pipe and the tops of all the air flow passages, and the top of the transmission pipe is communicated with the flexible air duct;
the bottom of the air blowing head is arc-shaped with a downward opening, a set gap is formed between the bottom of the air blowing head and the outer wall of the filter cylinder, an air homogenizing chamber is formed in the middle of the bottom of the air blowing head, and the air homogenizing chamber is communicated with the bottoms of all the air flow channels.
The invention is further arranged that the bearing piece comprises a middle part with a circular arc-shaped longitudinal section and two fan-shaped edge parts positioned at two ends of the middle part, all the abdication ports are arranged on the middle part, and the abdication holes are arranged on the edge parts;
the middle part is inclined, and the discharge pipe is connected to the bottom end of the middle part;
the upper side of the periphery of the middle part is provided with an annular flushing pipe, the periphery of the yielding port is provided with the flushing pipe, the side wall of the flushing pipe is provided with a plurality of flushing ports, all flushing ports are used for flushing the inner wall of the middle part, and the cleaning pipe is communicated with the flushing pipe.
The invention is further characterized in that the filter hole is in a truncated cone shape, and one end with a larger diameter of the filter hole is positioned at the outer side of the filter cylinder.
The invention also provides a process for filtering using the papermaking white water-based filtering system as described in any one of the preceding claims, comprising the steps of:
s1, a first driving mechanism drives a filter cartridge to rotate;
s2, the white water to be filtered is pumped in through a water inlet pipe, and the white water is sprayed out through a water inlet and acts on the inner wall of the filter cartridge;
s3, enabling the filtered white water to pass through the filtering holes under the action of centrifugal force, and enabling the filtered fibers to be positioned on the inner wall of the filtering cylinder, so that the water level in the filtering cylinder is kept lower than the bottom of the passing hole;
s4, inputting air flow to the air blowing head by the air blower, wherein the air flow acts on the outer side of a part of the filtering holes at the top, passes through the filtering holes and blows off fibers adhered to the inner wall of the filtering cylinder;
s4, the fibers fall down and enter the bearing piece, and meanwhile, the second driving mechanism drives the blast head to reciprocate so as to clean the filter cartridge comprehensively;
and S5, periodically or continuously blowing water flow or air flow into the bearing piece through the cleaning pipe, driving the blown-off fiber to the discharge pipe, and discharging the blown-off fiber outwards.
Compared with the prior art, the invention provides a filtering system based on papermaking white water, when white water is filtered, the first driving mechanism drives the filter cylinder to rotate, then the white water to be filtered is pumped in through the water inlet pipe, and the white water is sprinkled out through the water inlet and acts on the inner wall of the filter cylinder; the filtered white water passes through the filtering holes under the action of centrifugal force, and the filtered fibers are positioned on the inner wall of the filtering cylinder, so that the water surface in the filtering cylinder is kept lower than the bottom of the passing hole; the blower inputs air flow to the blower head, the air flow acts on the outer side of part of the filtering holes at the top, and the air flow passes through the filtering holes and blows off fibers adhered to the inner wall of the filter cartridge; the fiber falls down and enters the bearing piece, and meanwhile, the second driving mechanism drives the blast head to reciprocate so as to clean the filter cartridge comprehensively; the cleaning pipe is used for blowing water flow or air flow into the bearing piece periodically or continuously, so that blown fiber is driven to the discharge pipe and discharged outwards.
Wherein, the top of the first supporting frame is provided with an annular supporting ring, and the inner ring of the supporting ring is provided with a supporting groove; the outer wall of the filter cylinder is provided with the limiting convex ring matched with the supporting groove, so that the filter cylinder can be stably kept to rotate under the action of the first supporting frame and the supporting ring.
After the white water to be filtered is sprayed out into the filter cartridge through a plurality of water inlets, the white water can be uniformly dispersed to act on the inner wall of the filter cartridge, so that the white water can be efficiently filtered and centrifuged outside the filter cartridge; in the whole filtering process, the water quantity in the water inlet pipe is kept relatively small, so that the white water can sufficiently flow to the outside of the filter cylinder after rotating for a certain angle, and meanwhile, the white water can be prevented from flowing out from the through hole to the outside after being excessive.
The size of the blowing head is smaller, so that the blowing head can generate larger air flow, and the blowing head can have larger wind force when the fiber adhered to the inner wall of the filter cartridge is blown down, so that the fiber falling off from the filter cartridge is better. When the air flow acts on the outer wall of the filter cartridge, the inside of the filter cartridge is not blocked by liquid, so that the air flow can fully act on the fibers, and a full blowing effect can be generated on the fibers. At the same time, the blast head can also generate high pressure relative to the outside in the filter cylinder, so that the filtration can be accelerated.
Under the driving action of the second driving mechanism, the blast head can comprehensively act on the filter cartridge; and because the accumulation speed of the fibers in the filter cartridge is slower, relatively more fibers can be accumulated in the place where the blowing head does not act, and then can be better blown off from the filter cartridge when being acted on by the blowing head.
After the fiber is blown off, the fiber falls into the receiving piece under the action of gravity, wherein the receiving piece is connected to the second supporting frame through the two connecting parts, so that the receiving piece does not interact with the filter cartridge (the separating ring and the like). Meanwhile, when in actual use, the cleaning pipe can continuously blow in air flow and water flow, and can also be carried out periodically; when the air flow and water flow act on the receiving piece, the fiber can be driven to the discharge pipe, and the fiber can be normally discharged outwards, so that the filtering of the white water is completed. In the filtering process, a blocking plate and the like can be arranged on the outer side of the filter cylinder, and then a water pipe or a water pool and the like are arranged at the bottom of the filter cylinder to block the centrifuged white water, and meanwhile, the centralized treatment is convenient.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a papermaking white water-based filtration system of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is an enlarged view of portion C of FIG. 1;
FIG. 5 is an enlarged view of portion D of FIG. 1;
FIG. 6 is an enlarged view of portion E of FIG. 1;
fig. 7 is a cross-sectional view of one embodiment of the papermaking white water-based filtration system of the present invention;
fig. 8 is an enlarged view of part F of fig. 7;
fig. 9 is a second cross-sectional view of an embodiment of the papermaking white water-based filtration system of the present invention;
fig. 10 is an enlarged view of a portion G in fig. 9;
fig. 11 is an enlarged view of the portion H in fig. 9;
FIG. 12 is an enlarged view of portion J of FIG. 9;
fig. 13 is an internal schematic view of an embodiment of the papermaking white water-based filtration system of the present invention;
fig. 14 is an enlarged view of the K portion in fig. 13;
fig. 15 is an enlarged view of the portion L in fig. 13;
fig. 16 is a schematic view of an embodiment of a filter cartridge in a papermaking white water-based filtration system of the present invention;
fig. 17 is a schematic view of an embodiment of a water inlet pipe in a papermaking white water-based filtration system of the present invention;
fig. 18 is a schematic view of an embodiment of a blower head in a papermaking white water-based filtration system of the present invention;
fig. 19 is a cross-sectional view of an embodiment of a blower head in a papermaking white water-based filtration system of the present invention;
fig. 20 is a schematic view of an embodiment of a receiver in a papermaking white water-based filtration system of the present invention;
fig. 21 is a schematic view of an embodiment of a filter aperture in a papermaking white water-based filtration system of the present invention;
fig. 22 is a schematic view of an embodiment of a speed-increasing gearbox in a papermaking white water-based filtration system of the present invention.
1, a first supporting frame; 2. a second support frame; 3. a filter cartridge; 4. a filter hole; 5. a blocking ring; 6. a through port; 7. a receiving member; 7a, a middle part; 7b, edge portions; 8. a connection part; 9. cleaning the pipe; 10. a discharge pipe; 11. a water inlet pipe; 11a, a water delivery part; 11b, a water inlet part; 12. a water inlet; 13. a blowing head; 14. a blower; 15. an air outlet; 15a, transfer chamber; 15b, an air flow channel; 15c, a gas homogenizing chamber; 16. a spacer ring; 17. a yielding port; 18. a driving motor; 19. a power lever; 20. a power tooth; 21. a passive tooth; 22. a relief hole; 23. a reciprocating screw rod; 24. a guide rod; 25. active bevel teeth; 26. a third support frame; 27. a transmission rod; 28. passive bevel teeth; 29. driving a worm; 30. a drive worm wheel; 31. a speed increasing gear box; 32. an input lever; 33. an output lever; 34. a flexible airway; 35. a transfer tube; 36. a flushing pipe; 37. a flushing port; 38. a support ring; 39. and a limiting convex ring.
Detailed Description
The filtration system and the filtration process based on the papermaking white water provided by the invention are further described in detail below with reference to the accompanying drawings and the specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. The same or similar reference numbers in the drawings refer to the same or similar parts.
A filtration system based on papermaking white water, as shown in fig. 1-22, comprising:
two first support frames 1 and two second support frames 2, wherein the two first support frames 1 are positioned between the two second support frames 2;
the filter cartridge 3 is in a horizontal shape, a filter hole 4 is formed in the filter cartridge 3, and two ends of the filter cartridge 3 are rotatably connected to the tops of the two first supporting frames 1;
a first driving mechanism for driving the filter cartridge 3 to rotate;
the two blocking rings 5 are arranged, the two blocking rings 5 are respectively and coaxially connected to two ends of the filter cartridge 3, and a through hole 6 is formed in the middle of each blocking ring 5;
the supporting piece 7 is in a cover shape with an upward opening, connecting parts 8 are arranged at two ends of the supporting piece 7, the two connecting parts 8 respectively penetrate through the two passing holes 6 and are respectively connected with the two second supporting frames 2, one end of the supporting piece 7 is communicated with a cleaning pipe 9, and the bottom of the other end is communicated with a discharge pipe 10;
the water inlet pipe 11 is provided with a plurality of water inlets 12, part of the water inlet pipe 11 passes through the through hole 6, all the water inlets 12 are right opposite to the inner wall of the filter cartridge 3, and the water inlet pipe 11 is lower than the bearing piece 7;
the air blowing head 13 is externally connected with an air blower 14 (fixedly connected to the second support frame 2 through a bracket) for blowing the air blowing head 13, an air outlet 15 is formed in the air blowing head 13, the air outlet 15 is downwards right opposite to the top of the filter cartridge 3, and the projection of the air blowing head 13 in the vertical direction is positioned in the projection of the bearing piece 7 in the vertical direction;
and a second driving mechanism for driving the blower head 13 to reciprocate along the length direction of the filter cartridge 3.
The water inlet pipe 11 comprises a water conveying part 11a and a ring-shaped water inlet part 11b communicated with the water conveying part 11a, and the water inlet part 11b penetrates through the two through holes 6;
the part of the water inlet 11b passing through the filter cartridge 3 is just upstream of the bottom of the filter cartridge 3, and the longitudinal section of the part of the water inlet 11b where the water inlet 12 is formed is in a circular arc shape with an opening facing the axis of the filter cartridge 3.
A plurality of annular separating rings 16 are arranged on the inner wall of the filter cylinder 3 at intervals, the separating rings 16 are coaxial with the filter cylinder 3, and the outer walls of the separating rings 16 are connected with the inner wall of the filter cylinder 3;
the side part of the receiving piece 7 is provided with a plurality of yielding ports 17 for the separation ring 16 to movably pass through.
The first driving mechanism comprises a driving motor 18 fixedly connected to the second supporting frames 2, a power rod 19 horizontally rotates to penetrate through the two second supporting frames 2, and the driving motor 18 is connected with the power rod 19;
a plurality of power teeth 20 are arranged on the outer wall of the power rod 19, and driven teeth 21 meshed with the power teeth 20 are arranged on the inner ring of the separation ring 16;
two sides of the bearing piece 7 are provided with yielding holes 22 for the power rod 19 to movably pass through.
The second driving mechanism comprises a reciprocating screw rod 23 horizontally rotatably connected to the two second supporting frames 2 and a guide rod 24 horizontally connected to the two second supporting frames 2, the guide rod 24 is parallel to the reciprocating screw rod 23, the blowing head 13 is movably matched with the reciprocating screw rod 23 (namely, a rotatable sheet is hinged in the blowing head 13, meanwhile, two threads with opposite directions are arranged on the outer wall of the reciprocating screw rod 23, the rotatable sheet can move into the two threads in the moving process, and the rotatable sheet can realize automatic reversing at the tail end of the threads, so that the moving direction of the blowing head 13 is changed), and the two guide rods 24 are movably penetrated through the blowing head 13, and the blowing head 13 is movably attached to the outer wall of the guide rod 24;
the power rod 19 is provided with a driving bevel gear 25, a third support frame 26 is arranged on the outer wall of the second support frame 2, a transmission rod 27 is rotatably arranged on the third support frame 26, one end of the transmission rod 27 is provided with a driven bevel gear 28 meshed with the driving bevel gear 25, the other end of the transmission rod 27 is provided with a driving worm 29, and the reciprocating screw 23 is provided with a driving worm wheel 30 meshed with the driving worm 29.
The second support frame 2 is provided with a speed increasing gear box 31, the speed increasing gear box 31 comprises an input rod 32 and an output rod 33, the power rod 19 is connected with the input rod 32, and the output rod 33 is connected with an impeller of the blower 14;
the air outlet 15 of the blower 14 is provided with a flexible air duct 34 in a communicating manner, and the free end of the flexible air duct 34 is communicated with the air inlet end of the air outlet 15.
The air outlet 15 comprises a transfer pipe 35 vertically arranged at the top of the air blowing head 13, a transfer chamber 15a horizontally arranged in the air blowing head 13 and a plurality of air flow channels 15b communicated with the transfer chamber 15a, the transfer chamber 15a is communicated with the bottom of the transfer pipe 35 and the tops of all the air flow channels 15b, and the top of the transfer pipe 35 is communicated with the flexible air guide pipe 34;
the bottom of the blast head 13 is in a circular arc shape with a downward opening, a set gap is arranged between the bottom of the blast head 13 and the outer wall of the filter cartridge 3, a gas-equalizing cavity 15c is arranged in the middle of the bottom of the blast head 13, and the gas-equalizing cavity 15c is communicated with the bottoms of all the gas flow channels 15 b.
The receiving piece 7 comprises a middle part 7a with a circular arc-shaped longitudinal section and two fan-shaped edge parts 7b positioned at two ends of the middle part 7a, all the abdication openings 17 are arranged on the middle part 7a, and the abdication holes 22 are arranged on the edge parts 7 b;
the middle part 7a is inclined, and the discharge pipe 10 is connected to the bottom end of the middle part 7 a;
the upper side of the periphery of the middle part 7a is provided with an annular flushing pipe 36, the periphery of the yielding port 17 is provided with the flushing pipe 36, the side wall of the flushing pipe 36 is provided with a plurality of flushing ports 37, all the flushing ports 37 are used for flushing the inner wall of the middle part 7a, and the cleaning pipe 9 is communicated with the flushing pipe 36.
The filtering holes 4 are in a truncated cone shape, and one end of the filtering holes 4 with larger diameter is located at the outer side of the filtering cylinder 3.
The invention also provides a process for filtering using the papermaking white water-based filtering system as described in any one of the preceding claims, comprising the steps of:
s1, a first driving mechanism drives a filter cartridge 3 to rotate;
s2, white water to be filtered is pumped in through a water inlet pipe 11, and the white water is sprayed out through a water inlet 12 and acts on the inner wall of the filter cartridge 3;
s3, enabling the filtered white water to pass through the filtering holes 4 under the action of centrifugal force, and enabling the filtered fibers to be located on the inner wall of the filtering cylinder 3, so that the water surface in the filtering cylinder 3 is kept lower than the bottom of the through hole 6;
s4, inputting air flow to the air blast head 13 by the air blower 14, wherein the air flow acts on the outer side of the part of the filter holes 4 positioned at the top, and the air flow passes through the filter holes 4 and blows off fibers adhered to the inner wall of the filter cartridge 3;
s4, the fibers fall down and enter the bearing piece 7, and meanwhile, the second driving mechanism drives the air blowing head 13 to reciprocate so as to clean the filter cartridge 3 comprehensively;
and S5, periodically or continuously blowing water flow or air flow into the bearing piece 7 through the cleaning pipe 9, driving the blown-off fiber to the discharge pipe 10, and discharging the blown-off fiber outwards.
When the filtering system and the filtering process based on the papermaking white water are used for filtering the white water, the first driving mechanism drives the filter cylinder 3 to rotate, and then the white water to be filtered is pumped in through the water inlet pipe 11 and is sprayed out through the water inlet 12 and acts on the inner wall of the filter cylinder 3; the filtered white water passes through the filtering holes 4 under the action of centrifugal force, and the filtered fibers are positioned on the inner wall of the filtering cylinder 3, so that the water surface in the filtering cylinder 3 is kept lower than the bottom of the passing hole 6; the blower 14 inputs an air flow to the blower head 13, the air flow acts on the outer side of the part of the filter holes 4 positioned at the top (the height of the fibers is the largest at this time, and the centrifugal force received is the smallest, so as to be separated from the inner wall of the filter cartridge 3), and the air flow passes through the filter holes 4 and blows off the fibers adhered to the inner wall of the filter cartridge 3; the fiber falls down and enters the bearing piece 7, and meanwhile, the second driving mechanism drives the air blowing head 13 to reciprocate so as to clean the filter cartridge 3 comprehensively; periodically or continuously, a water or air stream is blown into the receptacle 7 through the cleaning pipe 9, and the blown-off fibres are driven to the discharge pipe 10 and discharged outwards.
Wherein an annular supporting ring 38 is arranged at the top of the first supporting frame 1, and the inner ring of the supporting ring 38 is provided with a supporting groove; the outer wall of the filter cartridge 3 is provided with a limit convex ring 39 matched with the support groove, so that the filter cartridge 3 can be stably kept to rotate under the action of the first support frame 1 and the support ring 38.
After the white water to be filtered is sprayed out through the water inlets 12 and enters the filter cartridge 3, the white water can be uniformly dispersed to act on the inner wall of the filter cartridge 3, so that the white water can be efficiently filtered and centrifuged outside the filter cartridge 3; during the whole filtering process, the water inlet pipe 11 keeps relatively less water, so that the white water can flow out of the filter cartridge 3 after rotating a certain angle, and the white water can be prevented from flowing out of the through hole 6 after being excessive.
The blower head 13 has a smaller size, and thus has a smaller range of action, so that a sufficiently large air flow can be generated, and thus, when the fibers adhered to the inner wall of the filter cartridge 3 are blown down, a larger wind force can be provided, so that the fiber falling off from the filter cartridge 3 is more effective. When the air flow acts on the outer wall of the filter cartridge 3, the inside of the filter cartridge 3 is not blocked by liquid, so that the air flow can act on the fibers sufficiently to generate a sufficient blowing effect on the fibers. At the same time, the blowing head 13 also enables a high pressure to be generated in the filter cartridge 3 relative to the outside, so that the progress of filtration can also be accelerated.
Under the driving action of the second driving mechanism, the blast head 13 can fully act on the filter cartridge 3; and because the accumulation rate of the fibers in the filter cartridge 3 is low, the fibers can be better blown off from the filter cartridge 3 after accumulating relatively more fibers in places where the blowing head 13 is not used and then being used by the blowing head 13.
After the fibres have been blown off, they fall under gravity into the receptacle 7, wherein the receptacle 7 is connected to the second support frame 2 via the two connection parts 8, so that the receptacle 7 does not interact with the filter cartridge 3 (and the spacer ring 16 etc.). Meanwhile, when in actual use, the cleaning pipe 9 can continuously blow in air flow and water flow, and can also be carried out periodically; when the air and water flows into the socket 7, the fibres can be driven to the discharge pipe 10 and can be discharged normally outwards, so that the filtering of the white water is completed. In the filtering process, a blocking plate and the like can be arranged on the outer side of the filter cartridge 3, and then a water pipe or a water pool and the like are arranged at the bottom for blocking the centrifuged white water, and meanwhile, the centralized treatment is convenient.
In the filtering process, the water pump pumps white water to be filtered into the water conveying part 11a, then flows into the water inlet part 11b, flows into the filter cartridge 3 through the two ends of the water inlet part 11b, and finally is sprayed out through the water inlet 12; since the water inlet portion 11b is annular, the white water can be made to flow in uniformly during actual use, the water pressure of the water inlet 12 at different positions is reduced, and the filtering at different positions can be performed uniformly.
Besides, after water is sprayed out, the water can be blocked by the separating ring 16, namely the separating ring 16 divides the filter cartridge 3 into a plurality of relatively independent spaces, so that water flow can be well prevented from flowing to the side part in the centrifuging process, and the centrifuging effect is ensured. Meanwhile, after the air blowing head 13 blows out air flow, the separating ring 16 can also isolate and separate air entering the filter cartridge 3, so that the air flow is prevented from flowing to the side part, namely, the air flow is guided to a certain extent, the blowing speed and acting force of the air flow on fibers can be increased, and the fibers are separated from the inner wall of the filter cartridge 3 conveniently.
Meanwhile, the diameter of the outer part of the filtering hole 4 is larger, and the diameter of the inner part is smaller; firstly, one end with smaller diameter can better prevent fibers from being spilled outwards, so that the filtering quality and the filtering effect are ensured; secondly, because the outside opening diameter is great, the air current of being convenient for enters into in the filtration pore 4, and can produce venturi effect in the less department of diameter of filtration pore 4, can not only play the blowing effect to the fibre that is in filtration pore 4 department promptly this moment, can also drive the air current that is in the place around the filtration pore 4 inboard simultaneously and flow, thereby can also play the blowing effect to the fibre that is in filtration pore 4 inner wall periphery, thereby make the fibre around the filtration pore 4 also can be blown off, the effect of blowing off is better, it is also more comprehensive.
In the centrifugal process, the driving motor 18 drives the power rod 19 to rotate, the power rod 19 drives all the power teeth 20 to rotate, and meanwhile, the power teeth 20 can drive the driven teeth 21 and the separating ring 16 to rotate, so that the filter cartridge 3 can be driven to rotate. Because the power rod 19, the power teeth 20 and the like are all positioned in the filter cartridge 3, the outer wall of the filter cartridge 3 used for the filtering part can be kept in a smooth state, so that only a small gap exists between the blast head 13 and the outer wall of the filter cartridge 3, the loss of gas is reduced, the air current can be conveniently and comprehensively acted on the fiber, and the blowing effect on the fiber is further ensured.
In the rotation process of the power rod 19, the driving bevel gear 25 is driven to rotate, the driving bevel gear 25 can drive the driven bevel gear 28, the transmission rod 27 and the driving worm 29 to rotate, and meanwhile, the driving worm 29 can drive the driving worm wheel 30 and the reciprocating screw rod 23 to rotate; the power rod 19 continuously rotates in one direction, so that the reciprocating screw rod 23 rotates in one direction, but the reciprocating screw rod 23 can drive the blowing head 13 to reciprocate, so that the blowing head 13 can still act on the whole length of the filter cartridge 3 and blow off the fibers comprehensively.
In which the rotational speed of the filter cartridge 3 is faster at the time of actual filtering, but the rotational speed of the reciprocating screw rod 23 can be reduced by driving the worm screw 29 and the driving worm wheel 30 (which is only shown and does not represent an actual structure; the diameter of the driving worm wheel 30 can be made larger at the time of actual use to reduce the moving speed of the blowing head 13), thereby enabling the blowing head 13 to reciprocate at a lower speed. The reciprocating screw rod 23 is the same as that in the market, and the matching mode of the blower head 13 and the reciprocating screw rod 23 is the same as that in the market, and redundant description is omitted.
The guide bar 24 can improve the angular stability of the blowing head 13 so that it can maintain a stable height and angle and stably reciprocate. At the same time, the water inlet 12 is just opposite to the upper stream of the bottom end of the filter cartridge 3, so that the distance and length that can be centrifuged after the water is sprinkled on the inner wall of the filter cartridge 3 are larger, and the filtering effect and quality can be better. Meanwhile, the side of the water inlet part 11b provided with the water inlet 12 is arc-shaped, so that the white water can be dispersed, the white water can be widely acted in the filter cartridge 3, and the filtering is promoted from the side.
During the whole filtering process, the separation ring 16 moves through the yielding port 17, namely the bearing piece 7 does not interact with the separation ring 16; the power rod 19 also moves through the relief hole 22, so that the normal rotation of the power rod 19 is not affected by the bearing piece 7. The end of the power rod 19 is fixedly connected with the input rod 32 of the speed increasing gear box 31, and then the output rod 33 of the speed increasing gear box 31 is connected with the input end of the impeller of the blower 14, so that the speed of the power rod 19 can be used for driving the impeller of the blower 14 to rotate after being increased by the speed increasing gear box 31, thereby generating larger airflow. The speed increasing gear box 31 and the blower 14 are both conventional technologies, that is, the speed increasing gear box 31 has a plurality of gears with different sizes and meshed in sequence, for example, as shown in fig. 22 (according to practical situations, gears with different groups can be selected so that the impeller can have different rotation speeds); at the same time, the blower 14 is preferably a centrifugal blower 14, i.e. the impeller is driven to rotate, and generates centrifugal force, so that air is led outwards from the housing and enters the flexible air duct 34 (which can be elastically deformed, so that the blowing head 13 can be blown at any position), and meanwhile, the external air enters the housing through the air inlet of the housing, so that continuous blowing is realized.
The air flow passes through the flexible air duct 34 and then enters the transfer tube 35 first, forms positive pressure in the transfer chamber 15a, then uniformly enters each air flow passage 15b, forms larger air pressure in the air equalizing chamber 15c, and finally enters the filter cartridge 3 after passing through the filter holes 4.
The gap between the bottom of the blowing head 13 and the outer wall of the filter cartridge 3 is small (preferably 1-5mm, and other gaps can be selected according to practical situations), so that the two parts are not worn mutually, but the air leaked between the two parts is small, so that most air flows are acted in the filter holes 4, and the cleaning effect is ensured. Meanwhile, the air-homogenizing chamber 15c can uniformly divide air, so that the air pressures in different places are relatively uniform, and the air-homogenizing chamber 15c can act on all the filtering holes 4 covered by the air-homogenizing chamber 15c (the air-homogenizing chamber 15c is smaller, and therefore the air-homogenizing chamber still has enough air pressure), so that the cleaning range is wider, and the cleaning effect is better.
When the fiber carried in the carrying piece 7 is cleaned, water or air flow can be introduced through the cleaning pipe 9, and then the water or air flow enters the flushing pipe 36 and then is flushed out through all flushing ports 37, wherein all the flushing ports 37 are obliquely opposite to the upper surface of the middle part 7a, so that the fiber can be well flushed to the middle part of the middle part 7 a; meanwhile, the middle part 7a is in an inclined state, so that the fiber can be conveniently driven to the discharge pipe 10 and finally discharged from the discharge pipe 10, and the cleaning effect is good. In actual use, the worker may clear the inside of the receiving member 7 through the water pipe after passing the water pipe over the top of the upper edge portion 7 b.
Wherein only need through a driving motor 18 in this application, can drive cartridge filter 3 and carry out the centrifugation, can drive the blast head 13 simultaneously and carry out reciprocating motion, can also drive air-blower 14 simultaneously and carry out the blast, consequently the cost is reduced, can also make the cooperation of each partial structure go on simultaneously, guaranteed the filtration quality and the effect of white water.
In actual production, the power rod 19 and the power teeth 20 can be in a state of being positioned above the bearing piece 7 as shown in the drawing of the application, or can be arranged below the bearing piece 7, and the latter is in a preferable state; thus, the adhesion of fibers and the like to the power rod 19 and the power teeth 20 can be well prevented during actual use.
In a further embodiment, the end of the power rod 19 is connected to a water pump for driving the white water to be filtered into the water inlet pipe 11; and in actual use, the speed increasing gear box 31 or the speed reducing gear box can be connected upstream of the water pump.
It should be noted that, in the present description, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different manner from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (10)
1. A papermaking white water-based filtration system, comprising:
two first support frames (1) and two second support frames (2), wherein the two first support frames (1) are positioned between the two second support frames (2);
the filter cartridge (3) is in a horizontal shape, a filter hole (4) is formed in the filter cartridge (3), and two ends of the filter cartridge (3) are rotatably connected to the tops of the two first supporting frames (1);
the first driving mechanism is used for driving the filter cartridge (3) to rotate;
the two blocking rings (5) are arranged, the two blocking rings (5) are respectively and coaxially connected to two ends of the filter cartridge (3), and a through hole (6) is formed in the middle of each blocking ring (5);
the supporting piece (7), the supporting piece (7) is in a cover shape with an upward opening, connecting parts (8) are arranged at two ends of the supporting piece (7), the two connecting parts (8) respectively penetrate through the two passing openings (6) and are respectively connected with the two second supporting frames (2), a cleaning pipe (9) is arranged at one end of the supporting piece (7) in a communicating manner, and a discharge pipe (10) is arranged at the bottom of the other end in a communicating manner;
the water inlet pipe (11), a plurality of water inlets (12) are formed in the water inlet pipe (11), part of the water inlet pipe (11) penetrates through the through hole (6), all the water inlets (12) are opposite to the inner wall of the filter cartridge (3), and the water inlet pipe (11) is lower than the bearing piece (7);
the air blowing head (13), an air blower (14) for blowing the air blowing head (13) is externally connected with the air blowing head (13), an air outlet (15) is formed in the air blowing head (13), the air outlet (15) is downwards opposite to the top of the filter cartridge (3), and the projection of the air blowing head (13) in the vertical direction is positioned in the projection of the bearing piece (7) in the vertical direction;
and the second driving mechanism is used for driving the blast head (13) to reciprocate along the length direction of the filter cartridge (3).
2. The filtering system based on papermaking white water according to claim 1, characterized in that said water inlet pipe (11) comprises a water delivery portion (11 a) and a water inlet portion (11 b) in the shape of a ring communicating with said water delivery portion (11 a), said water inlet portion (11 b) passing through two of said through openings (6);
the part of the water inlet part (11 b) passing through the filter cartridge (3) is right opposite to the upstream of the bottom of the filter cartridge (3), and the longitudinal section of the part of the water inlet part (11 b) provided with the water inlet (12) is in a circular arc shape with an opening facing the axis of the filter cartridge (3).
3. The filtering system based on papermaking white water according to claim 2, characterized in that a plurality of annular separating rings (16) are arranged on the inner wall of the filtering cylinder (3) at intervals, the separating rings (16) are coaxial with the filtering cylinder (3), and the outer walls of the separating rings (16) are connected with the inner wall of the filtering cylinder (3);
a plurality of abdication ports (17) used for the movable penetration of the separation ring (16) are arranged on the side part of the bearing piece (7).
4. A filtration system based on papermaking white water according to claim 3, characterized in that said first driving mechanism comprises a driving motor (18) fixedly connected to said second supporting frames (2), a power rod (19) being provided horizontally rotating through both said second supporting frames (2), said driving motor (18) being connected to said power rod (19);
a plurality of power teeth (20) are arranged on the outer wall of the power rod (19), and driven teeth (21) meshed with the power teeth (20) are arranged on the inner ring of the separation ring (16);
and yielding holes (22) used for the power rod (19) to movably pass through are formed in the two sides of the bearing piece (7).
5. The filtering system based on papermaking white water according to claim 4, characterized in that the second driving mechanism comprises a reciprocating screw rod (23) horizontally rotatably connected to two second supporting frames (2) and a guide rod (24) horizontally connected to two second supporting frames (2), the guide rod (24) is parallel to the reciprocating screw rod (23), the blowing head (13) is movably matched with the reciprocating screw rod (23), both the guide rods (24) movably pass through the blowing head (13), and the blowing head (13) is movably attached to the outer wall of the guide rod (24);
be provided with initiative awl tooth (25) on power pole (19), one be provided with third support frame (26) on the outer wall of second support frame (2), it is provided with transfer line (27) to rotate on third support frame (26), one end of transfer line (27) be provided with initiative awl tooth (25) engaged with passive awl tooth (28), the other end is provided with driving worm (29), be provided with on reciprocating screw (23) with driving worm wheel (30) engaged with driving worm (29).
6. The filtering system based on papermaking white water according to claim 5, characterized in that a speed increasing gear box (31) is arranged on the second supporting frame (2), the speed increasing gear box (31) comprises an input rod (32) and an output rod (33), the power rod (19) is connected with the input rod (32), and the output rod (33) is connected with an impeller of the blower (14);
the air outlet (15) of the blower (14) is communicated with a flexible air duct (34), and the free end of the flexible air duct (34) is communicated with the air inlet end of the air outlet (15).
7. The filtering system based on papermaking white water according to claim 6, wherein the air outlet (15) comprises a transfer pipe (35) vertically arranged at the top of the blasting head (13), a transfer chamber (15 a) horizontally arranged in the blasting head (13) and a plurality of air flow channels (15 b) communicated with the transfer chamber (15 a), the transfer chamber (15 a) is communicated with the bottom of the transfer pipe (35) and the tops of all the air flow channels (15 b), and the top of the transfer pipe (35) is communicated with the flexible air guide pipe (34);
the bottom of the air blast head (13) is in an arc shape with a downward opening, a set gap is formed between the bottom of the air blast head (13) and the outer wall of the filter cartridge (3), an air homogenizing chamber (15 c) is formed in the middle of the bottom of the air blast head (13), and the air homogenizing chamber (15 c) is communicated with the bottoms of all the air flow channels (15 b).
8. The filtering system based on papermaking white water according to claim 4, characterized in that the receiving element (7) comprises a middle part (7 a) with a circular arc-shaped longitudinal section and two fan-shaped edge parts (7 b) positioned at two ends of the middle part (7 a), all the yielding openings (17) are arranged on the middle part (7 a), and the yielding holes (22) are arranged on the edge parts (7 b);
the middle part (7 a) is inclined, and the discharge pipe (10) is connected to the bottom end of the middle part (7 a);
the upper side of the periphery of the middle part (7 a) is provided with an annular flushing pipe (36), the periphery of the yielding port (17) is provided with the flushing pipe (36), the side wall of the flushing pipe (36) is provided with a plurality of flushing ports (37), all the flushing ports (37) are used for flushing the inner wall of the middle part (7 a), and the cleaning pipe (9) is communicated with the flushing pipe (36).
9. The filtration system based on papermaking white water according to claim 1, characterized in that the filtration holes (4) are truncated cone-shaped and the end of the filtration holes (4) with larger diameter is located outside the filtration cartridge (3).
10. A process for filtration using the papermaking white water-based filtration system as recited in any one of claims 1-9, comprising the steps of:
s1, a first driving mechanism drives a filter cartridge (3) to rotate;
s2, the white water to be filtered is pumped in through a water inlet pipe (11), and the white water is sprayed out through a water inlet (12) and acts on the inner wall of the filter cartridge (3);
s3, enabling the filtered white water to pass through the filtering holes (4) under the action of centrifugal force, and enabling the filtered fibers to be located on the inner wall of the filtering cylinder (3) so as to keep the water surface in the filtering cylinder (3) lower than the bottom of the through hole (6);
s4, inputting air flow to the air blast head (13) by the air blower (14), wherein the air flow acts on the outer side of a part of the filtering holes (4) positioned at the top, and the air flow passes through the filtering holes (4) and blows off fibers adhered to the inner wall of the filtering cylinder (3);
s4, the fibers fall down and enter the bearing piece (7), and meanwhile, the second driving mechanism drives the air blowing head (13) to reciprocate so as to clean the filter cartridge (3) comprehensively;
s5, periodically or continuously blowing water flow or air flow into the bearing piece (7) through the cleaning pipe (9), driving blown-off fibers to the discharge pipe (10) and discharging the blown-off fibers outwards.
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| CN202310147840.XA CN116099273A (en) | 2023-02-21 | 2023-02-21 | Filtering system and filtering process based on papermaking white water |
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| CN202310147840.XA CN116099273A (en) | 2023-02-21 | 2023-02-21 | Filtering system and filtering process based on papermaking white water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889485A (en) * | 2024-03-14 | 2024-04-16 | 山西低碳环保产业集团有限公司 | Assembled energy-saving heating and ventilation device and ventilation method thereof |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889485A (en) * | 2024-03-14 | 2024-04-16 | 山西低碳环保产业集团有限公司 | Assembled energy-saving heating and ventilation device and ventilation method thereof |
| CN117889485B (en) * | 2024-03-14 | 2024-05-24 | 山西低碳环保产业集团有限公司 | Assembled energy-saving heating and ventilation device and ventilation method thereof |
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