CN204841982U - Improve spiral seam inside lining of swirler or cyclone wearability - Google Patents
Improve spiral seam inside lining of swirler or cyclone wearability Download PDFInfo
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- CN204841982U CN204841982U CN201520549475.6U CN201520549475U CN204841982U CN 204841982 U CN204841982 U CN 204841982U CN 201520549475 U CN201520549475 U CN 201520549475U CN 204841982 U CN204841982 U CN 204841982U
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Abstract
The utility model relates to an improve spiral seam inside lining of swirler or cyclone wearability. Its technical scheme does: spiral seam inside lining is located inside swirler or the cyclone, spiral seam inside lining comprises the cylinder barrel body (1) and cone (2), vertical welding has gusset (3) on cylinder barrel (1) and cone (2) outer wall, the width of gusset is 5 -40mm, thickness is 2 -10mm, quantity is the 3 -5 piece, be equipped with spiral seam (4) on the cylinder barrel body (1) and cone (2), spiral seam width is 5 -40mm, the last down hand of spiral of spiral seam follow is spiral under the clockwise direction, until cone (2) bottom, inside lining cylinder barrel (1) and cone (2) diameter ratio swirler or cyclone's barrel and the little 10 -80mm of cone diameter, it is the twice of outer wall welding gusset (3) width, height and swirler or the inside highly uniform of cyclone, the cone angle is unanimous with swirler or cyclone, be equipped with oval import (5) on cylinder barrel (1) upper portion, with swirler or cyclone import butt joint. The utility model has the advantages of ordinary, the structure of preparation material is simple and convenient, simple process, with low costs, strong resistance to abrasion, convenient, the long service life of change.
Description
Technical field
The utility model relates to cyclone and cyclone dust collectors technical field, particularly relates to a kind of spiral seam liner improving cyclone or cyclone dust collectors wearability.
Background technology
Cyclone, also known as cyclone hydraulic separators, is a kind of classifying equipoment being separated non-homogeneous phase mixture.Can be used for liquid clarification, solid phase particles washing, liquid degassing and desanding, solid phase particles classification and classification and two kinds of non-mutually soluble liquids the several work such as to be separated.
Cyclone operation principle is fairly simple, mainly utilizes centrifugal principle.Ore pulp tangentially enters housing through mineral-feeding pipe under pressure, in shell, do gyration, and the coarse granule in ore pulp is subject to larger centrifugal force and near wall, and flows downward with ore pulp simultaneously, is finally discharged by bottom sand settling mouth; And fine grained is due to less by centrifugal force, is in rotary current center and moves upward with ore pulp liquid, finally becoming overflow by overflow pipe.
Cyclone dust collectors are a kind of dry type gas-solid separating devices, and operation principle is the centrifugal force utilizing the dusty gas rotated to produce, and is separated by dust from air-flow.Cyclone dust collectors, as a kind of common gas-solid separating device, have structure simple, easy to manufacture, cost and running cost lower, operate in actual application, easy to maintenance, stable performance, to advantages such as the change strong adaptabilities of the factors such as the concentration of dusty gas and temperature.Cyclone dust collectors are mainly used in industrial dedusting, air sampling, select the aspect such as powder, heat exchange, are most widely used a kind of cleaners in industry.But due to high speed dusty gas stream strongly washing away cyclone dust collectors wall, so the wearing and tearing of wall are very serious.In the extreme circumstances, the steel plate of number millimeters thick with less than half a year, even some months was just worn out by local, thus seriously have impact on whole dust pelletizing system and normally runs.In addition, make the part dust being deposited on wall produce secondary fly-up near the High Rotation Speed air-flow at wall place, the actual efficiency of these cyclone dust collectors is just difficult to the main cause more than 90%.Therefore, the efficiency of dust collection and the anti-wear performance that improve cyclone dust collectors are further two important subject in dedusting technology always.
No matter cyclone or cyclone dust collectors are operationally, and solid-liquid suspension or gas-solid mixture do violent centrifugal rotation motion under pressure, suspension or gas-solid mixture violent wash away abrasion under, cyclone or cyclone dust collectors internal face very easily wear and tear.This not only can shorten the service life of cyclone or cyclone dust collectors, and can reduce its classification, separative efficiency due to the change of key position size, changes overflow and underflow amount, thus worsens operational effect.Therefore, cyclone or cyclone dust collectors need adopt high-abrasive material to make, or make liner with high-abrasive material.Along with cyclone is in the extensive use of many industrial department wide popularization and application such as mining industry, chemical industry, oil, coal, light industry, environmental protection, food, medicine, weaving and cyclone dust collectors, both at home and abroad the research of cyclone and cyclone dust collectors wear problem is very paid attention to.
Wear problem is the very scabrous problem of cyclone and cyclone dust collectors, and be mitigate wear problem, researchers propose: adopt high-abrasive material to make cyclone or cyclone dust collectors, or make liner with high-abrasive material.Make at use high-abrasive material and set up in cyclone or cyclone dust collectors on wear-resistant liner two kinds of way choice, considering from the angle of financial cost, mostly tend to the latter, namely set up wear-resistant liner at cyclone or cyclone dust collectors inside.At present, a lot, conventional high-abrasive material has cast stone, carborundum, aluminium oxide ceramics, abrasive rubber and polyurethane etc. for cyclone or cyclone dust collectors lining wear-resistant material kind.These materials have its advantage, but there is weak point to some extent again simultaneously.The inorganic non-metallic wear-resistant liners such as cast stone, carborundum and aluminium oxide ceramics, although the anti-wear performance of material own is very good, but the wear-resistant liner globality made like this is poor, in use, be easy to broken after being subject to starching stream or the washing away of gas-solid mixture, come off.The classification separating effect of this not only shadow cyclone or cyclone separator, and time serious, fragment also can block cyclone, thus cause stopping production.The wear-resistant liner that the organic material such as abrasive rubber, polyurethane makes, inner wall smooth, is easy to the small-sized cyclone that manufactured size precision is high.Under the operating mode that lower in temperature, handled raw meal particle size is less, hardness is lower, particle shape is more perfectly round, its anti-wear performance is better; But under the operating mode that higher in temperature, handled raw meal particle size is comparatively thick, hardness is comparatively large, particle shape is more sharp-pointed, its anti-wear performance is then poor.When using common carbon gusset to make cyclone housing, no matter be with Inorganic Non-metallic Materials such as cast stone, carborundum and aluminium oxide ceramics, or make wear-resistant liner with the organic material such as abrasive rubber, polyurethane, all there is housing and the larger difference of lining material in mechanical mechanics property and thermal stability, this can cause equally, and liner is easily deformable to come off, thus has a strong impact on classification separating property and the service life of cyclone or cyclone dust collectors.
From above-mentioned discussion, although carried out large quantity research in high-abrasive material, the fact has shown, the wear problem of cyclone or cyclone dust collectors still exists.Manufacture and design wear-resistant liner, improve the wearability of cyclone or cyclone dust collectors, the service life extending them is the technical barrier that cyclone and cyclone dust collectors field do not overcome always.
Summary of the invention
The utility model is intended to overcome prior art defect, and object is to provide that a kind of cost is low, manufacture craft is simple, wearability is strong and be applicable to improve the spiral seam liner of cyclone or cyclone dust collectors wearability.
For achieving the above object, the technical solution adopted in the utility model is: set up spiral seam liner at cyclone or cyclone dust collectors cylindrical tube and cone inwall.This liner is made up of cylindrical tube, cone, gusset, spiral seam, oval import; Cylindrical tube and cone are provided with spiral seam, and the width of spiral seam is 5-40mm, and the spiral seam from top to bottom hand of spiral is spiral under clockwise direction, until bottom cone.Cylindrical tube and cone outer wall vertical are welded with some gussets, are linked to be integral lining, and gusset width is 5-40mm, and thickness is 2-10mm, and quantity is 3-5 block, is uniformly distributed; On cylindrical tube top, oval import is set, the minor axis length of oval import than cyclone or cyclone dust collectors import internal diameter bigger, dock with cyclone or cyclone dust collectors import; Spiral seam liner cylindrical tube and cone diameter, than the cylindrical shell of cyclone or cyclone dust collectors and the little 10-80mm of cone diameter, the i.e. twice of outer wall welding gusset width, height is consistent with cyclone or cyclone dust collectors internal height, and coning angle is consistent with cyclone or cyclone dust collectors.
Owing to adopting technique scheme, a kind of spiral seam liner improving cyclone or cyclone dust collectors wearability that the utility model proposes.Spiral seam liner and cyclone or cyclone dust collectors shell are not welding or are sticked together, but spiral seam liner is directly placed in cyclone or cyclone dust collectors wall, the gusset welded by spiral seam liner outer wall supports and props up cyclone or cyclone dust collectors inwall, thus fixing spiral seam liner and cyclone or cyclone dust collectors shell, so namely, save technique to make, be convenient to again more changeable liner.
Set up spiral seam liner in cyclone or cyclone dust collectors after, during its work, solid-liquid slurry or gas-solid mixture under the influence of centrifugal force, first wear and tear to spiral seam liner, thus the wearing and tearing reduced cyclone or cyclone dust collectors wall, improve its wearability.And the main feature of spiral seam liner is the design of spiral seam and spiral seam liner outer wall gusset, the gusset of spiral seam liner outer wall makes spiral seam liner and wall spacing be 5-40mm, form certain annular space, this annular space is cut off into semiclosed annular space by vertically vertical gusset simultaneously.Solid-liquid slurry or gas-solid mixture are under the influence of centrifugal force, the Xiang Bianbi that particle is larger is close, then downward eddy flow, but due to the existence of spiral seam, thicker solid particle is passed spiral seam by the downstream near limit wall, enter in the annular space that spiral seam liner and wall formed, but the existence of the gusset due to the welding of spiral seam liner outer wall, block the eddy flow entering solid-liquid slurry or gas-solid mixture in this space, make the descending flow velocity sharp-decay entering this space, thus form low speed slurry stream or low speed flow.The solid particle starched in stream or air-flow slowly falls, thus can not cause wearing and tearing to cyclone or cyclone dust collectors wall under this descending flow velocity and Gravitative Loads.Certain solid particulate matter inevitably contacts with spiral seam liner, wearing and tearing are caused to spiral seam liner, but the existence of spiral seam, makes the solid-liquid slurry stream of close spiral seam liner or gas-solid mixture cannot form liquid stream or the air-flow of High Rotation Speed all the time, thus significantly reduces the wearing and tearing to liner.
In addition, owing to having set up spiral seam liner in cyclone or cyclone dust collectors, when cyclone classification works, because the existence of spiral seam and liner outer wall gusset makes to form certain annular space between spiral seam liner and cyclone wall, solid-liquid slurry under the influence of centrifugal force, after thicker particle has entered into the semi-circular space of spiral seam liner and wall formation through spiral seam, by in the slurry that is difficult to again inside back-mixing to spiral seam liner, the grain graininess be separated in overflow pipe can not be had influence on, thus improve the operating efficiency of cyclone; In like manner, after setting up spiral seam liner, during cyclone dust collectors work, by near wall, spiral seam liner is unfavorable for that the part downstream of dust collection becomes the radial flow contributing to dust collection, considerably reduce reentrainment of dust, improve efficiency of dust collection.The existence of spiral seam, by the low speed air cushion between dust " suction " wall and spiral seam liner, makes to form upper dust-ring and lower grey ring in deduster, thus alleviates the wearing and tearing to spiral seam liner.High speed dusty gas stream does not contact with deduster wall, so enhance anti-wear performance.Because the processing and fabricating of spiral seam liner is simple, the cost of cyclone or cyclone dust collectors is not almost increased, but efficiency, drag losses, wearability indices are improved, service life also extends greatly.
The utility model compared with prior art, has the following advantages:
1. in order to improve cyclone or cyclone dust collectors wearability, existing inner lining material adopts the manufacture such as carborundum, aluminium oxide ceramics mostly, although these material wear abilities are comparatively strong, its cost is high, manufacture inner lining process also more complicated, therefore can not apply on a large scale.And for the utility model, spiral seam inner lining material directly adopts ordinary carbon steel manufacture, low cost of manufacture, and manufacturing process is simple.
2. existing cyclone or cyclone dust collectors, when using ordinary carbon steel to make cyclone housing, no matter be with Inorganic Non-metallic Materials such as cast stone, carborundum and aluminium oxide ceramics, or make wear-resistant liner with the organic material such as abrasive rubber, polyurethane, all there is housing and the larger difference of lining material in mechanical mechanics property and thermal stability, make the welding of liner and cyclone or cyclone dust collectors shell or bondingly become larger problem, and this can cause equally, and liner is easily deformable to come off; In addition, like this liner is welded with cyclone or cyclone dust collectors shell or bonds together, when liner serious wear needs to change, cannot only more changeable liner and add difficulty and the cost of replacing.And be the entirety of independently separating for the utility model spiral seam liner and cyclone or cyclone dust collectors housing, spiral seam liner is directly positioned in cyclone or cyclone dust collectors, the gusset welded by spiral seam liner outer wall is fixed, avoid the welding of liner and cyclone or cyclone dust collectors wall or bonding problem, simultaneously when liner serious wear needs to change, only can change spiral seam liner, so not only cost-saving and replacing facilitates.
3. the design of existing liner is all a complete entirety, and the wearing and tearing to cyclone or cyclone dust collectors shell of solid-liquid slurry or gas-solid mixture are converted into the wearing and tearing to liner completely.And for the utility model, different from the structure of liner in the past, it has set up the design of spiral seam within the liner, solid-liquid slurry or gas-solid mixture are under the influence of centrifugal force, the Xiang Bianbi that particle is larger is close, then downward eddy flow, but due to the existence of spiral seam, thicker solid particle is passed spiral seam by the downstream near limit wall, enter in the annular space that spiral seam liner and wall formed, but simultaneously again due to the existence of the gusset of spiral seam liner external welding, block the eddy flow entering solid-liquid slurry or gas-solid mixture in this space, make the descending flow velocity sharp-decay entering this space, thus form low speed slurry stream or air-flow.The solid particle starched in stream or air-flow slowly falls, thus can not cause wearing and tearing to cyclone or cyclone dust collectors wall under this descending flow velocity and Gravitative Loads.Certain solid particulate matter inevitably contacts with spiral seam liner, wearing and tearing are caused to it, but the existence of spiral seam, makes the solid-liquid slurry stream of close spiral seam liner or gas-solid mixture cannot form liquid stream or the air-flow of High Rotation Speed all the time, thus significantly reduces the wearing and tearing to spiral seam liner.Namely this utility model greatly reduces the wearing and tearing of solid particle to wall and spiral seam liner from mechanism, improves wearability and the service life of cyclone or cyclone dust collectors.
4. existing cyclone or cyclone dust collectors, its liner and wall are directly bonded together, between there is no space, when cyclone or cyclone dust collectors work, although be subject to larger centrifugal force compared with coarse granule and move to wall, but due to the rotational flow of solid-liquid slurry or gas-solid mixture, unavoidably by wall thicker solid particle again back-mixing in overflow slurry or air-flow, thus reduce the classification efficiency of cyclone or the efficiency of dust collection of cyclone dust collectors.And for the utility model, different from the structure of liner in the past, certain annular space is defined between spiral seam liner and wall, after comparatively coarse granule enters this space through spiral seam under centrifugal action, slowly can only fall through underflow opening to get rid of, back-mixing will be difficult to in overflow slurry or air-flow again, thus improve the classification efficiency of cyclone and the efficiency of dust collection of cyclone dust collectors.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the hydrocyclone structure figure setting up spiral seam liner;
Fig. 5 is the cyclone duster structure figure setting up spiral seam liner.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described further, described content is not limited to the utility model protection domain.
Embodiment 1: this comprises cylindrical tube 1, cone 2, gusset 3, spiral seam 4, oval import 5 for the spiral seam liner improving cyclone or cyclone dust collectors wearability.As shown in Figure 4, in the present embodiment, be used in cyclone by spiral seam liner, be inside lining with and be provided with spiral seam, the width of spiral seam is 5-40mm.The spacing distance of spiral seam liner and wall is generally 5-40mm, i.e. the gusset width of spiral seam liner outer wall welding is 5-40mm, and gusset is vertically welded on the outer wall of cylindrical tube and cone, be linked to be entirety, gusset thickness is 2-10mm, and quantity is 3-5 block, is uniformly distributed.Liner cylindrical tube and cone diameter, than the cylindrical shell of cyclone or cyclone dust collectors and the little 10-80mm of cone diameter, the i.e. twice of outer wall welding gusset width, height is consistent with cyclone or cyclone dust collectors internal height, and coning angle is consistent with cyclone or cyclone dust collectors.Oval import is arranged on cylindrical tube top, the minor axis length of oval import than cyclone or cyclone dust collectors import internal diameter bigger, dock with cyclone or cyclone dust collectors import.
In the present embodiment, spiral seam liner is used for cyclone, spiral seam width is 15mm, the gusset thickness of spiral seam liner outer wall welding is 4mm, width is 15mm, the quantity of gusset is 4 pieces, and gusset is vertically vertically welded on the outer wall of spiral seam liner, and uniform welding is in spiral seam liner four positions all around.In the present embodiment, cyclone cylindrical tube diameter is 280mm, and cone angle is 20 °, therefore spiral seam liner cylindrical tube internal diameter is 250mm, and cone angle is 20 °.As shown in Figure 4, for setting up the hydrocyclone structure figure after spiral seam liner.
Its course of work is as follows: it is inner that solid-liquid slurry enters cyclone cylindrical tube by mineral-feeding pipe under feed force, but the existence of spiral seam liner, avoid the wearing and tearing of solid particle to cyclone wall.Solid-liquid slurry under the influence of centrifugal force, eddy flow is carried out in cyclone inside, the Xiang Bianbi that particle is larger is close, then downward eddy flow, but is lining with the existence of spiral seam in spiral seam, thicker solid particle is passed spiral seam by the downstream near limit wall, enter in the annular space that spiral seam liner and cyclone wall formed, but due to the existence of spiral seam liner outer wall gusset, blocked the eddy flow of solid-liquid slurry, make the descending flow rate attenuation of solid-liquid slurry, form low speed slurry stream.Solid particle in slurry stream slowly falls under this descending flow velocity and Gravitative Loads, and the solid that particle is thicker is got rid of from underflow opening.It is little that the solid particle that particle diameter is less is subject to centrifugal force, is in rotary current center and moves upward with ore pulp liquid, and finally being discharged by overflow pipe becomes overflow.In the process, solid-liquid slurry directly contacts with spiral seam liner, weares and teares, thus can not cause wearing and tearing to cyclone wall.Although solid particle contacts with spiral seam liner, but the existence of spiral seam, the solid-liquid slurry stream near liner cannot form the slurry stream of High Rotation Speed all the time, thus significantly reduces the wearing and tearing to spiral seam liner, namely improve the wearability of cyclone, extend the service life of cyclone.
Embodiment 2: this is for improving the spiral seam liner of cyclone or cyclone dust collectors wearability as shown in Figure 1, Figure 2, Figure 3 shows.Its structure is identical from embodiment 1, and just relevant parameter is different.Spiral seam liner is used for cyclone dust collectors by the present embodiment, as shown in Figure 5, for setting up the cyclone duster structure figure after spiral seam liner.In the present embodiment, spiral seam width is the gusset thickness of 10mm spiral seam liner outer wall welding is 3mm, and width is 10mm, and the quantity of gusset is 4 pieces, gusset is vertically vertically welded on the outer wall of spiral seam liner, and uniform welding is in spiral seam liner four positions all around.In the present embodiment, cyclone dust collectors cylindrical tube diameter is 380mm, and cone angle is 20 °, therefore spiral seam liner cylindrical tube internal diameter is 360mm, and cone angle is 20 °.
The above-mentioned course of work of setting up the cyclone dust collectors of spiral seam liner is as follows: gas-solid mixture enters cyclone dust collectors inside under high-speed condition, but the existence of spiral seam liner, avoid the wearing and tearing of solid particle to cyclone dust collectors wall.Under effect with dirt airflow centrifugal power, eddy flow is carried out in cyclone dust collectors inside, the dust that particle is larger is close to limit wall, then downward eddy flow, but is lining with the existence of spiral seam in spiral seam, make the downstream near limit wall that thicker solid particle is passed ring spiral seam, enter in the annular space that spiral seam liner and cyclone dust collectors wall formed, but due to the existence of spiral seam liner outer wall gusset, blocked the eddy flow of gas-solid mixture, make its descending flow rate attenuation, form low speed flow.Solid dust particle in air-flow slowly falls under this descending flow velocity and Gravitative Loads, and the solid dust that particle is thicker is got rid of from underflow opening.It is little that the solid particle that particle diameter is less is subject to centrifugal force, is in rotary current center and moves upward with air-flow, and finally being discharged by overflow pipe becomes overflow.In the process, gas-solid mixture directly contacts with spiral seam liner, weares and teares, thus can not cause wearing and tearing to cyclone dust collectors wall.Although solid particle contacts with spiral seam liner, but the existence of spiral seam, the gas-solid mixture near liner cannot form the air-flow of High Rotation Speed all the time, thus significantly reduces the wearing and tearing to spiral seam liner, namely improve the wearability of cyclone dust collectors, extend the service life of cyclone dust collectors.In addition, after entering through spiral seam the annular space that spiral seam liner and wall formed compared with coarse granule under centrifugal action, slowly can only fall through underflow opening to get rid of, back-mixing will be difficult to in overflow air-flow again, and thus improve the efficiency of dust collection of cyclone dust collectors.
Claims (5)
1. improve a spiral seam liner for cyclone or cyclone dust collectors wearability, it is characterized in that this device is made up of cylindrical tube (1), cone (2), gusset (3), spiral seam (4), oval import (5);
Cylindrical tube (1) and cone (2) are provided with spiral seam (4), cylindrical tube (1) and cone (2) outer wall vertical weld some gussets, be provided with oval import (5) on cylindrical tube (1) top, dock with cyclone or cyclone dust collectors import.
2. the spiral seam liner of raising cyclone according to claim 1 or cyclone dust collectors wearability, it is characterized in that described gusset (3) is vertically welded on the outer wall of cylindrical tube (1) and cone (2), be linked to be entirety, gusset (3) width is 5-40mm, thickness is 2-10mm, quantity is 3-5 block, is uniformly distributed.
3. the spiral seam liner of raising cyclone according to claim 1 or cyclone dust collectors wearability, the width that it is characterized in that described spiral seam (4) is 5-40mm, the spiral seam from top to bottom hand of spiral is spiral under clockwise direction, until cone (2) bottom.
4. the spiral seam liner of raising cyclone according to claim 1 or cyclone dust collectors wearability, it is characterized in that described liner cylindrical tube (1) and cone (2) diameter, than the cylindrical shell of cyclone or cyclone dust collectors and the little 10-80mm of cone diameter, the i.e. twice of outer wall welding gusset (3) width, height is consistent with cyclone or cyclone dust collectors internal height, and coning angle is consistent with cyclone or cyclone dust collectors.
5. the spiral seam liner of raising cyclone according to claim 1 or cyclone dust collectors wearability, it is characterized in that described oval import (5) is arranged on cylindrical tube (1) top, the minor axis length of oval import (5) than cyclone or cyclone dust collectors import internal diameter bigger, dock with cyclone or cyclone dust collectors import.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520549475.6U CN204841982U (en) | 2015-07-20 | 2015-07-20 | Improve spiral seam inside lining of swirler or cyclone wearability |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520549475.6U CN204841982U (en) | 2015-07-20 | 2015-07-20 | Improve spiral seam inside lining of swirler or cyclone wearability |
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| CN204841982U true CN204841982U (en) | 2015-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362876A (en) * | 2015-07-20 | 2017-02-01 | 武汉科技大学 | Spiral seam lining for improving wear resistance of cyclone or cyclone deduster |
| CN108978308A (en) * | 2018-06-27 | 2018-12-11 | 广西金桂浆纸业有限公司 | Cyclone separator and slurrying drying system |
-
2015
- 2015-07-20 CN CN201520549475.6U patent/CN204841982U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362876A (en) * | 2015-07-20 | 2017-02-01 | 武汉科技大学 | Spiral seam lining for improving wear resistance of cyclone or cyclone deduster |
| CN108978308A (en) * | 2018-06-27 | 2018-12-11 | 广西金桂浆纸业有限公司 | Cyclone separator and slurrying drying system |
| CN108978308B (en) * | 2018-06-27 | 2021-10-15 | 广西金桂浆纸业有限公司 | Cyclone separator and pulping and drying system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20180720 |