CN112323529A - A screw axis and slag washing machine for washing of paper pulp knar - Google Patents
A screw axis and slag washing machine for washing of paper pulp knar Download PDFInfo
- Publication number
- CN112323529A CN112323529A CN202011139538.2A CN202011139538A CN112323529A CN 112323529 A CN112323529 A CN 112323529A CN 202011139538 A CN202011139538 A CN 202011139538A CN 112323529 A CN112323529 A CN 112323529A
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- CN
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- Prior art keywords
- pipe body
- washing
- pulp
- knots
- fixed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005406 washing Methods 0.000 title claims abstract description 50
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 30
- 239000002893 slag Substances 0.000 title claims description 30
- 239000002023 wood Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000000630 rising effect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 230000001174 ascending effect Effects 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 18
- 239000002245 particle Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002002 slurry Substances 0.000 description 5
- 238000012216 screening Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention discloses a spiral shaft for washing paper pulp knots, which comprises a pipe body, wherein a plurality of openings are distributed on the pipe body, and nozzles are arranged on the openings; the top end of the tube body is sealed and fixed by a steel bar; a guide plate, an axial guide plate and a semi-helical blade are sequentially fixed on the outer surface of the pipe body from bottom to top; each guide plate inclines upwards and spirally distributes on the periphery of the pipe body in a rising way, and two adjacent guide plates are spaced; the axial guide plates are rectangular steel plates, the number of the axial guide plates is at least two, and the axial guide plates are axially parallel to the pipe body and are vertically fixed on the periphery of the pipe body along long edges; the periphery of the axial guide plate is fixed with a rising helical blade, and the upper tail part of the helical blade is fixed with the outer wall of the pipe body; a plurality of half helical blades are arranged to be fixed on the outer wall of the pipe body in a rising spiral shape, and a space is reserved between the head and the tail of each two adjacent half helical blades. The spiral shaft for washing the wood knots of the paper pulp can effectively separate heavier particles in a paper pulp mixture and cut larger wood knots, so that the abrasion of a screen and the running resistance of equipment are reduced.
Description
Technical Field
The invention belongs to the field of paper pulp cleaning, and particularly relates to a spiral shaft for washing paper pulp knots and a slag washing machine.
Background
Particulate matter in the pulp, such as un-digested wood chips, large knots or stones, can damage equipment downstream of the pulp line and must be removed. The pulp knots are washed to remove wood chips and large knots, and good fibers in the pulp knots are recovered and sent to a screening device. The washing of the paper pulp knots is usually realized by using a knot washing machine or a slag washing machine, in the washing process, a rotating spiral blade drives paper pulp to move upwards, particulate matters in the paper pulp are stirred and washed by a spiral shaft, then the paper pulp passes through a screen outside the spiral shaft for screening and filtering, coarse slag is kept in the screen, paper pulp fiber liquid flows into a good pulp port through a screen hole and enters downstream screening equipment of a production line, and therefore the washing of the paper pulp knots is realized.
The screw shaft used in the washing machine or slag washing machine of the prior art is a pipe body with continuous equal-pitch or continuous variable-pitch helical blades, and the screw shaft cannot effectively break up and separate particles. When the content of the particulate matters in the paper pulp is more and the particulate matters are larger, part of the particulate matters and fiber clusters which are not broken up in time are conveyed to the upper part of the pipe body by the spiral shaft to cause screen falling or pulp piling, so that screen holes of the screen are abraded, coarse slag content in the discharged good pulp is higher, running resistance of equipment is increased, and energy consumption is increased.
Disclosure of Invention
The invention aims to provide a screw shaft for washing paper pulp knots and a slag washing machine, which can effectively break up or separate large particles in the paper pulp knots in the washing process.
The technical scheme of the invention is as follows: a spiral shaft for washing paper pulp knots comprises a pipe body, wherein a plurality of openings are distributed on the pipe body, and nozzles are arranged on the openings; the top end of the pipe body is sealed and fixed by a steel bar; a guide plate, an axial guide plate and a semi-helical blade are sequentially fixed on the outer surface of the pipe body from bottom to top; the guide plates are at least four, each guide plate inclines upwards and spirally distributes on the periphery of the pipe body in a rising way, and a space is arranged between every two adjacent guide plates; the axial guide plates are rectangular steel plates, the number of the axial guide plates is at least two, the axial guide plates are axially parallel to the pipe body, and the axial guide plates are vertically fixed on the periphery of the pipe body along long edges; the periphery of the axial guide plate is fixedly provided with a rising helical blade, and the upper tail part of the helical blade is fixed with the outer wall of the pipe body; half helical blade is a plurality of, and a plurality of half helical blade arrange in proper order to be ascending heliciform fixed the outer wall of body, adjacent two half helical blade's head, the tail have the interval between.
In the washing process of the paper pulp knots, the spiral shaft rotates to drive the paper pulp knot mixture to spirally move upwards, meanwhile, water is introduced from the bottom end of the pipe body and is sprayed out through each nozzle to wash the paper pulp knot mixture, and particulate matters (such as stones) with higher specific gravity fall from intervals among the guide plates when flowing through the guide plates and are separated and discharged; the pulp and the light large knots move upwards continuously to the axial guide plate under the rotation of the screw shaft and move upwards continuously under the rotation of the helical blades on the periphery of the axial guide plate, and are cut and scattered by the axial guide plate, and the heavy particles can fall and are separated by the gap between the helical blades and the pipe body. And (3) moving the pulp which continuously moves upwards and a small amount of large knots which are not broken to the positions of the half-helical blades, further cutting and moving the large knots upwards under the shearing of head ends and tail ends of the two adjacent half-helical blades due to the distance between the head ends and the tail ends of the two adjacent half-helical blades, and finally filtering the large knots to flow out. Under the action of the spiral shaft for washing the paper pulp knots, stones and large knots in the mixture of the washed paper pulp knots are separated, scattered or cut, so that the coarse residue content in the paper pulp is reduced, and the abrasion of a screen and the running resistance of equipment are reduced.
Preferably, said openings are not less than ten, and are distributed spirally on said tubular body, and the spray angle of said nozzle is 10 ° to 30 °.
Preferably, the guide plate is an arc-shaped steel plate, and the concave surface of the guide plate is a groove which ascends upwards.
Preferably, the length of the half-helical blade is less than half a period. The length of one period of the helical blade refers to the length of one rotation of the helical blade around the central shaft; the length of the half-helical blade is less than half a period, which means that the half-helical blade rotates less than half a period around the central shaft.
Preferably, the distance between the head and the tail of two adjacent half helical blades is 100-120 mm.
Preferably, the periphery of the pipe body is fixed with a limiting ring, and the limiting ring is arranged below all the guide plates.
Preferably, the bottom end of the pipe body is sealed and fixed with an end plate, and a liquid inlet hole is formed in the end plate.
The invention also provides a slag washing machine for washing the paper pulp knots, which comprises the spiral shaft.
The invention has the beneficial effects that:
the spiral shaft for washing the wood knots of the paper pulp can effectively separate heavier particles in a paper pulp mixture and break up or cut larger wood knots, so that the coarse residue content in the obtained paper pulp is low, and the abrasion of a screen and the running resistance of equipment are low.
Drawings
FIG. 1 is a schematic view showing the structure of a screw shaft for washing knots of pulp in example 1.
Fig. 2 is a perspective view of fig. 1.
FIG. 3 is a schematic structural view of the slag washing machine of the present invention.
In the figure:
1. a pipe body; 11. an opening; 12. a nozzle; 13. a steel bar; 2. a baffle; 3. a helical blade; 4. an axial guide plate; 5. a half-helical blade; 51. a first half-helical blade; 52. a second helical blade; 6. a limiting ring; 7. an end plate; 71. a liquid inlet hole; 8. a housing; 81. a heavy slag hole; 82. a pulp inlet; 83. a good pulp opening; 84. a coarse slag hole; 85. positioning the clamping table; 86. a water inlet pipe; 9. screening a screen; 10. a speed reducing motor.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
Fig. 1 is a schematic view showing a screw shaft structure for washing a pulp knot according to the present embodiment, and fig. 2 is a perspective view of fig. 1. As shown in fig. 1 and 2, the screw shaft for washing the pulp knots of the embodiment comprises a pipe body 1, wherein a plurality of openings 11 are distributed on the pipe body 1, and the area of a single opening is 1mm2The total area of all the openings is larger than the sectional area of the inner cavity of the tube body 1. The opening 11 is provided with a nozzle 12, and the spraying angle of the nozzle 12 is 30 degrees. The top end of the pipe body 1 is sealed and fixed by a steel bar 13; and a guide plate 2, an axial guide plate 4 and a semi-helical blade 5 are sequentially fixed on the outer surface of the pipe body 1 from bottom to top. The guide plate 2 is four, and the guide plate is the arc steel sheet, and the concave surface of curved guide plate upwards is ascending recess. The four guide plates incline upwards to form ascending spiral circumferential distribution on the periphery of the pipe body 1, an interval is arranged between every two adjacent guide plates 2, and the arc-shaped grooves of the four arc-shaped guide plates form a spiral flow channel with the middle part disconnected with the interval. The axial guide plates 4 are rectangular steel plates, two axial guide plates 4 axially parallel to the pipe body 1 are fixed on the periphery of the pipe body 1, and the two axial guide plates 4 are vertically fixed on the periphery of the pipe body 1 along long edges. The periphery of the axial guide plate 4 is fixed with a rising helical blade 3, and the upper tail part of the helical blade 3 is fixed with the outer wall of the pipe body 1. Set up a plurality of half helical blade 5 on body 1 of helical blade 3's top, every half helical blade length is 1/4 cycles, and a plurality of half helical blade arrange in proper order to be ascending heliciform fixed the outer wall of body 1, adjacent two half helical blade's head and the tail interval is 100mm, and half helical blade 51's afterbody and half helical blade 52's head interval is 100mm in fig. 2.
Fig. 3 is a schematic structural view of a slag washing machine using the screw shaft for washing the wood knots of the pulp according to the embodiment. As shown in fig. 3, a speed reduction motor 10 is arranged above the slag washer, and a rotating shaft of the speed reduction motor 10 is fixedly connected with a steel bar 13 of the spiral shaft. A housing 8 is provided on the outer periphery of the screw shaft. A limiting ring 6 is fixed on the periphery of the pipe body 1, the limiting ring 6 is arranged below all the guide plates 2, and the spiral shaft is clamped and fixed on a positioning clamping table 85 at the lower part of the shell 8 through the limiting ring 6. The side wall of the shell 8 is provided with a slurry inlet 82, a good slurry outlet 83 and a coarse slag outlet 84 from bottom to top in sequence. The slurry inlet 82 is arranged at a position which is flush with or slightly above the lowest guide plate, and the coarse slag outlet 84 is arranged at the upper tail part of the half-helical blade 5. A screen 9 is further arranged between the shell 8 and the screw shaft, the screen 9 is positioned above the slurry inlet 82 and below the coarse slag port 84, and the fine slurry port 83 is sealed; the heavy slag hole 81 is arranged at the bottom of the shell 8. The bottom end of the pipe body 1 is sealed and fixed with an end plate 7, a liquid inlet hole 71 is formed in the end plate, and a water inlet pipe 86 at the bottom of the shell is communicated with the liquid inlet hole 71.
When the pulp knots are washed, the pulp knot mixture to be washed is introduced through the pulp inlet 82, the speed reducing motor 10 is started, the speed reducing motor 10 drives the steel bar 13 to rotate, so that the whole spiral shaft rotates spirally, the pulp knot mixture moves upwards under the rotation of the spiral shaft, meanwhile, water is introduced from the liquid inlet hole 71 at the bottom end of the pipe body 1 through the water inlet pipe 86, and the water is upwards sprayed out through the nozzles 12 on the pipe body 1 to wash the pulp knot mixture. Because the spraying angle of the nozzle is 30 degrees, the pulp wood knot mixture which rises spirally is washed by the water flow which forms a spraying shape along the spiral shaft from bottom to top in the whole shell. At the moment, heavier particles (such as stones or large knots) are cleaned and sink in the cleaning process, fall from gaps among the guide plates when flowing through the guide plates, gradually sink to the bottom of the shell 8 and are discharged through the heavy slag hole 81, and therefore damage to parts such as the screen 9 and the like in the subsequent washing and filtering process is avoided; the pulp and the lighter large knots in the pulp knot mixture continuously move upwards to the axial guide plate 4 under the rotation of the screw shaft, and continuously move upwards under the rotation of the helical blades 3 on the periphery of the axial guide plate 4, and are cut and scattered by the axial guide plate 4, and heavier particles can fall through the gap between the helical blades 3 and the pipe body 1 and are separated from the heavy slag port 81; the pulp which continuously moves upwards and a small amount of large knots which are not broken move to the position of the half-spiral blade 5, and because the distance between the head and the tail of the adjacent half-spiral blade 5 is 100mm, the large knots are further cut and move upwards under the shearing of the head and the tail ends of the half-spiral blade 5, and finally are filtered by the screen 9 and flow out from the good pulp port 83. The coarse slag which is not filtered out continuously moves upwards to be discharged through a coarse slag port 84 at the tail part of the half-helical blade 5.
The guide plate in the embodiment is an arc-shaped steel plate, the concave surface of the guide plate is upwards a rising groove, and the arc-shaped grooves of the four arc-shaped guide plates form a spiral flow channel with a break interval in the middle, so that the pulp wood node mixture can flow towards the position, and the resistance to upward flow is reduced.
In the embodiment, the slag washing machine is used for separating heavy impurities such as stones and the like in the pulp wood knot washing mixture and discharging the heavy impurities from a heavy slag hole under the action of the screw shaft for washing the pulp wood knots; the large wood knots in the pulp wood knot mixture are scattered or cut, the coarse residue content in the obtained pulp is low, and the abrasion of a screen and the running resistance of equipment are reduced.
Example 2
The difference between the embodiment and the embodiment 1 is that the head-to-tail spacing of the half-spiral blade of the spiral shaft for washing the wood knots of the pulp in the embodiment is 200mm, and the spray angle of the nozzle is 10 degrees; the guide plate 2 in this embodiment is a flat steel plate, and the length of the half-helical blade is 2/5 cycles. The area of a single opening is 20mm2And the total area of all the openings is larger than the sectional area of the inner cavity of the pipe body.
The spiral shaft for washing the paper pulp knots in the embodiment is suitable for the slag washing machine with a larger shell, and the slag washing machine has the advantages that the shell volume of the slag washing machine is larger, the mixture of the washed paper pulp knots is more, so the distance between the head and the tail of the used half-spiral blade is larger, the length of the used half-spiral blade is smaller, and the length is 2/5 cycles. The larger distance between the head and the tail of the half-spiral blade and the smaller length of the half-spiral blade are both in order to be more beneficial to cutting a larger amount of pulp wood knots, and prevent the excessive pulp wood knots from rotating in the distance between the half-spiral blades and being incapable of cutting. The use of a nozzle with a spray angle of 10 also allows the washing water to be sprayed to the pulp-wood mixture located further from the axis of the shell. The area of a single opening is 20mm2The aim is to fully wash more pulp wood knot mixture because of more water output.
In the embodiment, the slag washing machine separates and discharges heavy impurities such as stones and the like in the pulp wood knot mixture from the heavy slag hole; the large knots in the pulp knot mixture are broken up or cut, so that the coarse residue content in the obtained pulp is low, and the abrasion of the screen and the running resistance of equipment are reduced.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. In addition, the above embodiments are only some embodiments of the present invention, not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention. For example, the outer periphery of the pipe body may not be provided with a limiting ring, and the screw shaft may be fixedly mounted on the housing through accurate positioning. The bottom of the pipe body can be directly communicated with the pipe body in a sealing way without arranging an end plate, and the detailed description is omitted.
Claims (8)
1. The spiral shaft for washing the paper pulp knots is characterized by comprising a pipe body, wherein a plurality of openings are distributed on the pipe body, and nozzles are arranged on the openings; the top end of the pipe body is sealed and fixed by a steel bar; a guide plate, an axial guide plate and a semi-helical blade are sequentially fixed on the outer surface of the pipe body from bottom to top;
the guide plates are at least four, each guide plate inclines upwards and spirally distributes on the periphery of the pipe body in a rising way, and a space is arranged between every two adjacent guide plates;
the axial guide plates are rectangular steel plates, the number of the axial guide plates is at least two, the axial guide plates are axially parallel to the pipe body, and the axial guide plates are vertically fixed on the periphery of the pipe body along long edges; the periphery of the axial guide plate is fixedly provided with a rising helical blade, and the upper tail part of the helical blade is fixed with the outer wall of the pipe body;
half helical blade is a plurality of, and a plurality of half helical blade arrange in proper order to be ascending heliciform fixed the outer wall of body, adjacent two half helical blade's head, the tail have the interval between.
2. The screw shaft for washing wood knots of pulp as recited in claim 1, wherein said openings are not less than ten, said openings being spirally distributed on said tube; the spray angle of the nozzle is 10-30 deg.
3. The screw shaft for washing the knots of pulp as recited in claim 1, wherein said deflector is an arc-shaped steel plate, and the concave surface of said deflector is a groove rising upward.
4. Screw shaft for pulp knot washing according to claim 1, characterized in that the length of the half-screw blade is less than half a period.
5. The screw shaft for washing the wood knots of the pulp as recited in claim 1, wherein the distance between the head and the tail of two adjacent half-screw blades is 100-120 mm.
6. The screw shaft for washing the wood knots of the pulp as recited in claim 1, wherein a limiting ring is fixed on the periphery of the tube body, and the limiting ring is arranged below all the guide plates.
7. The screw shaft for washing the pulp knots according to claim 1, wherein an end plate is hermetically fixed at the bottom end of the tube body, and a liquid inlet hole is formed in the end plate.
8. A slag washing machine for washing of pulp knots, characterized in that it comprises a screw shaft according to one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011139538.2A CN112323529B (en) | 2020-10-22 | 2020-10-22 | Screw shaft for washing pulp wood knots and slag washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011139538.2A CN112323529B (en) | 2020-10-22 | 2020-10-22 | Screw shaft for washing pulp wood knots and slag washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112323529A true CN112323529A (en) | 2021-02-05 |
| CN112323529B CN112323529B (en) | 2024-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011139538.2A Active CN112323529B (en) | 2020-10-22 | 2020-10-22 | Screw shaft for washing pulp wood knots and slag washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112323529B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650125A (en) * | 1982-10-15 | 1987-03-17 | Escher Wyss Gmbh | Method for sorting fiber stock, especially for manufacturing paper, and sorting apparatus for the performance of such method |
| US5338451A (en) * | 1992-03-13 | 1994-08-16 | A. Ahlstrom Corporation | Apparatus for treating pulp |
| US5341826A (en) * | 1992-04-07 | 1994-08-30 | Hans Huber Gmbh | Apparatus for compressing and washing contaminated raked-off or screened material, particularly in sewage treatment plants |
| CN1412386A (en) * | 2001-10-16 | 2003-04-23 | 倪均达 | Paper pulp, plastics and impurity separation machine |
| CN102303943A (en) * | 2011-08-17 | 2012-01-04 | 无锡市彩云机械设备有限公司 | Sludge drier auger |
| CN105712605A (en) * | 2016-04-22 | 2016-06-29 | 上海同臣环保有限公司 | Novel stacked screw sludge dewatering machine and spiral shaft thereof |
| CN207357138U (en) * | 2017-08-17 | 2018-05-15 | 洛阳市华工实业有限公司 | A kind of reaction kettle of built-in deflector and Auger helical blade |
| CN213836073U (en) * | 2020-10-22 | 2021-07-30 | 新乡市新平航空机械有限公司 | A screw axis and slag washing machine for washing of paper pulp knar |
-
2020
- 2020-10-22 CN CN202011139538.2A patent/CN112323529B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650125A (en) * | 1982-10-15 | 1987-03-17 | Escher Wyss Gmbh | Method for sorting fiber stock, especially for manufacturing paper, and sorting apparatus for the performance of such method |
| US5338451A (en) * | 1992-03-13 | 1994-08-16 | A. Ahlstrom Corporation | Apparatus for treating pulp |
| US5341826A (en) * | 1992-04-07 | 1994-08-30 | Hans Huber Gmbh | Apparatus for compressing and washing contaminated raked-off or screened material, particularly in sewage treatment plants |
| CN1412386A (en) * | 2001-10-16 | 2003-04-23 | 倪均达 | Paper pulp, plastics and impurity separation machine |
| CN102303943A (en) * | 2011-08-17 | 2012-01-04 | 无锡市彩云机械设备有限公司 | Sludge drier auger |
| CN105712605A (en) * | 2016-04-22 | 2016-06-29 | 上海同臣环保有限公司 | Novel stacked screw sludge dewatering machine and spiral shaft thereof |
| CN207357138U (en) * | 2017-08-17 | 2018-05-15 | 洛阳市华工实业有限公司 | A kind of reaction kettle of built-in deflector and Auger helical blade |
| CN213836073U (en) * | 2020-10-22 | 2021-07-30 | 新乡市新平航空机械有限公司 | A screw axis and slag washing machine for washing of paper pulp knar |
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| CN112323529B (en) | 2024-03-12 |
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