CN106087517B - A kind of beater that can change pulp flow direction repeatedly - Google Patents
A kind of beater that can change pulp flow direction repeatedly Download PDFInfo
- Publication number
- CN106087517B CN106087517B CN201610606951.2A CN201610606951A CN106087517B CN 106087517 B CN106087517 B CN 106087517B CN 201610606951 A CN201610606951 A CN 201610606951A CN 106087517 B CN106087517 B CN 106087517B
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- beater roll
- beater
- stock tank
- paper pulp
- arc section
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- 230000008859 change Effects 0.000 title claims abstract description 8
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 65
- 238000005192 partition Methods 0.000 claims abstract description 16
- 239000010865 sewage Substances 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 238000010009 beating Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 2
- 238000005360 mashing Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- D21D1/04—Beater rolls or bars
-
- 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
Landscapes
- Paper (AREA)
Abstract
A kind of beater that can change pulp flow direction repeatedly, including stock tank, partition wall is provided in the stock tank, it washes drum and beater roll, the bottom of the stock tank is provided with sewage draining exit and drain hole, the slope includes ascent stage and arc section, vertical lower gradient raising of the ascent stage from stock tank bottom towards beater roll, the downstream side circular arc of the arc section from vertical lower towards the beater roll of beater roll is bent, the radian of the arc section is consistent with the circumference arc of beater roll, the arc section is equipped with several bed plaves, axial direction undulate shape or zigzag fashion of several described bed plaves along beater roll.When paper pulp passes through between beater roll and arc section, paper pulp is under the effect of the bed plate of undulate shape or zigzag fashion, carry out echo on the axial direction of beater roll to move, increase paper pulp and number of processing and time are beaten by bed plate and fly cutter machinery, improve the mashing efficiency of paper pulp.
Description
Technical field
The present invention relates to a kind of beaters that can change pulp flow direction repeatedly, belong to industrial pulp and paper technology neck
Domain.
Background technology
It in the field of paper-making pulping, is required for being beaten paper pulp raw material, crushed and being stirred, and is being beaten and is crushing
Process in, the technical staff of the industry can be used to equipment such as beaters, from after beater invention use by continuous
Improve and perfect, always using so far, although beater has the shortcomings that consume, power is big, takes up a large area and batch operation,
But since it can handle various paper pulp of different nature, and pass through the change of service condition, the paper pulp that can or obtain different requirements is special
Property, wide adaptation range and flexibility is big.Therefore beater can be still used in paper mill at home.Especially to processing cotton, fiber crops, hard cloth
And the special processes production line such as semi-chemical pulp.On the other hand, beater is the Grand Prix equipment occurred at first, other kinds of mashing
Development evolvement comes equipment all on the basis of it.
Paper pulp raw material, by the effect between fly cutter and bed plate, generates transversely cutting, longitudinal direction point in the slot of beater
The effects that splitting, be crushed, being swollen makes the paper pulp raw material be cut, crush and stir, ultimately forms pulp material, so as to which symbol be made
Close the pulp of copy paper requirement.The function that its fly cutter of existing beater or axis wheel slice are all only cut, i.e., at a high speed
During circumgyration incision, axis wheel slice only carries out material the effect of circumgyration incision.There is one when in use for the equipment
Point shortcoming, axis wheel slice can not carry out material the action of sawing, when encountering material placement than comparatively dense, axis wheel slice
Cutting effect be not just very prominent.
Inventor has found patent No. 201520320988.X, patent name by retrieval：A kind of changing applied to beater
Axis wheel, authorized announcement date are beaten into type：2015.09.09, which disclose a kind of modifieds applied to beater to be beaten axis
Wheel, including a rotation shaft, spiral winding is equipped with three axis wheel slices for mashing on the rotation shaft, and every axis wheel is sliced edge
Arrange successively from top to bottom, and the slice of three axis wheels in the rotation shaft bottom is outer by the winding of cooperation spiral for the rotation shaft
Sawtooth is also distributed on periphery respectively.The utility model is realized can realize during mashing to paper pulp material simultaneously
The beating results such as cut, cut, sawing, paper pulp material is allow faster, to be more fully broken, cut, improves the work of beater
Efficiency.When the patent carries out sawing-like motion to realize by improving the structure that runner is sliced to intensive material, the mashing is improved
The working efficiency of equipment reduces the working time of mashing, and the beater is made to be applicable to different paper pulp raw materials in operation, but
It is that the patent is also sliced specific there is no the improvement of the structure and installation site of open beater plate without open runner
Installation and use, disclose the particular condition in use and using effect of beater and insufficient.
Inventor also retrieves the discovery patent No.：201320270768.1 patent name：A kind of trough-style pulp beater authorizes public
Accuse day：2013.11.27 which disclose a kind of trough-style pulp beater, including beater beater roll；Beater beater roll is set
There is beater shaft；One end of beater shaft is fixed on bearing block；The other end of beater shaft is connect by bearing with belt pulley.
Bearing is self-aligning roller bearing.Bearing holder (housing, cover) is provided with outside bearing.Tank filler sleeve is provided on bearing holder (housing, cover).Belt pulley passes through belt and electricity
Machine connects.After trough-style pulp beater provided by the utility model uses bearing, particularly self-aligning roller bearing, reduce beater and fly
The starting current of rotor；Reduce maintenance cost；Motor is reduced using power, thereby reduces operating cost.The patent is led to
Cross the problem of improving the Starting mode of beater shaft to realize reduction start-up cost, but not consider beating results.
Invention content
Above-mentioned in order to solve the problems, such as, the invention discloses a kind of mashing that can change pulp flow direction repeatedly
Machine, specific technical solution are as follows：
A kind of beater that can change pulp flow direction repeatedly including stock tank, is provided with partition wall, washes drum in the stock tank
And beater roll, the bottom of the stock tank are provided with sewage draining exit and drain hole, there are gap between the end of the partition wall and stock tank,
The beater roll is located at the side of partition wall, the center of the beater roll through there is a central shaft, the central shaft of the beater roll across
On the abutment wall of partition wall and stock tank, the surface of the beater roll is equipped with several fly cuttves, when which works, stock tank
Middle injection paper pulp, beater roll rotate clockwise, and paper pulp flow to downstream side, the bottom of the stock tank from the upstream side of beater roll
Portion is provided with slope, the upstream side of the pulp flow when slope is located at the pulp beating machine working condition, the slope
Including ascent stage and arc section, vertical lower gradient raising of the ascent stage from stock tank bottom towards beater roll, the circular arc
The downstream side circular arc of section from vertical lower towards the beater roll of beater roll is bent, the radian of the arc section and the circle of beater roll
All radians are consistent, and the arc section is equipped with several bed plaves, and the axial direction of several described bed plaves along beater roll is in wave
Shape or zigzag fashion.
The relatively parallel proper alignment of axial direction of several described bed plaves along beater roll.
Axial direction indention shape of several described bed plaves along beater roll, each bed plate have that several are isometric
The shear bar composition of degree, the " V "-shaped arrangement of adjacent shear bar.
Axial direction undulate shape of several described bed plaves along beater roll, each bed plate is by the elasticity such as one
Shear bar undulate sigmoid form, the circular arc section surface offers the bed plate slot of wave-like, and shear bar is inserted into simultaneously
It is fixed in bed plate slot.
Several described fly cuttves are installed on the center of circle line of beater roll.
The edge of a knife of the fly cutter is at right angles triangular shaped, and the right-angle side of the edge of a knife of right-angle triangle is towards beater roll
Direction of rotation.
The maximum height of the arc section is no more than the peripheral wall height of stock tank.
The central shaft of the beater roll is connected with driving device.
The present invention operation principle be：
The present invention starts driving device, and driving device drives the central shaft of beater roll to rotate clockwise, and beater roll is also together
It rotates, under the toggle action of fly cutter, beater roll drives the paper pulp in stock tank to be flow to down from the upstream side of beater roll
Side is swum, when by arc section, paper pulp is gradually processed by the mechanism of fly cutter and bed plate in accordance with copy paper requirement paper pulp
Paper pulp.According to the requirement of different paper kinds and different paper-making fibres, allow paper pulp repeatedly by beater roll, until paper pulp is flown
Rotor and bed plate mechanical treatment stop driving device to after meeting the requirements, and beater roll is out of service.Drain hole is opened to put paper pulp
Go out, after paper pulp releasing, open sewage draining exit, the waste material of paper pulp is discharged.
When paper pulp passes through between beater roll and arc section, paper pulp is acted in the bed plate of undulate shape or zigzag fashion
Under, on the axial direction of beater roll carry out echo and move, increase paper pulp by bed plate and fly cutter machinery mashing number of processing and when
Between, improve the mashing efficiency of paper pulp.
The beneficial effects of the invention are as follows：
1. the bed plate undulate shape of the present invention, extends effective length of the bed plate on beater roll axial direction, bed plate
It is big with the effective active area range of fly cutter, when paper pulp passes through beater roll, the crooked route of bed plate is followed to flow repeatedly, is improved
The mechanical treatment efficient of paper pulp；
2. the bed plate indention shape of the present invention, when by beater roll, paper pulp is pushed by roll bar along fly cutter paper pulp
The radial direction movement of roller, paper pulp impact bottom point under the bed plate effect of zigzag fashion from the vertex of zigzag fashion, then the bottom of from
Point slowly flow to adjacent vertex, recycles successively, increases the flow fluctuation of paper pulp, paper pulp is beaten by beater roll
More uniformly；
3. the maximum height of arc section of the present invention is no more than the peripheral wall height of stock tank, when paper pulp passes through beater roll, paper pulp exists
It can splash under the action of inertia force, the height of arc section is lower, and paper pulp can be allowed to fall as early as possible under gravity
Get off, and fall in the downstream side of beater roll.
Description of the drawings
Fig. 1 is the structure diagram of the present invention,
Fig. 2 is the A direction views of Fig. 1,
Reference numerals list：1-stock tank, 2-ascent stage, 3-arc section, 4-bed plate, 5-beater roll, 6-fly cutter,
7-central shaft, 8-drain hole, 9-sewage draining exit, 10-partition wall, 11-driving device, 12-wash drum.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated.It should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that these attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the present invention in a schematic way, therefore it only shows composition related to the present invention.
Fig. 1 is the structure diagram of the present invention, and arrow represents pulp flow direction in figure, with reference to attached drawing as it can be seen that this one kind
The beater in pulp flow direction can be changed repeatedly, including stock tank 1, beater roll 5 is provided in the stock tank 1, the stock tank 1
Bottom is provided with sewage draining exit 9 and drain hole 8, and through there is central shaft 7, the surface of the beater roll 5 is pacified at the center of the beater roll 5
Equipped with several fly cuttves 6, when which works, paper pulp is injected in stock tank 1, beater roll 5 rotates clockwise, and paper pulp is from flying
The upstream side of rotor 5 flow to downstream side, and the bottom of the stock tank 1 is provided with slope, and the slope is located at the paper pulp and beats
The upstream side of pulp flow during pulp grinder working condition, the slope include ascent stage 2 and arc section 3, the ascent stage 2 from
The vertical lower gradient of 1 bottom of stock tank towards beater roll 5 increases, and the arc section 3 is from the vertical lower of beater roll 5 towards fly cutter
The downstream side circular arc bending of roller 5, the radian of the arc section 3 is consistent with the circumference arc of beater roll 5, and the arc section 3 is pacified
Equipped with several bed plaves 4, several the axial direction undulate shapes or zigzag fashion of bed plate 4 along beater roll 5.This hair
Bright, after beater roll 5 rotates, the upstream side that fly cutter 6 stirs paper pulp from beater roll 5 flow to downstream side, and paper pulp leads to
When crossing beater roll 5, paper pulp is handled by fly cutter 6 and the mechanical mashing of bed plate 4, and 4 undulate shape of bed plate or zigzag fashion can push away
Dynamic paper pulp flows repeatedly on 5 axial direction of beater roll, extends the time of paper pulp once-through beater roll 5, improves the machine of paper pulp
Tool is beaten efficiency.
Several described fly cuttves 6 are installed on the center of circle line of beater roll 5.After beater roll 5 rotates, each fly cutter
The active force of 6 pairs of paper pulp is consistent in corresponding same area, it is ensured that paper pulp is by the flowing velocity during machinery mashing
It is uniform.
The edge of a knife of the fly cutter 6 is at right angles triangular shaped, and the right-angle side of the edge of a knife of right-angle triangle is towards fly cutter
5 direction of rotation of roller.The stationarity of right-angle side is more preferable, when fly cutter 6 is beaten from clockwise direction in the updrift side of pulp flow
When on paper pulp, fly cutter 6 is severely affected power, and fly cutter 6 will have sufficient contact area with paper pulp, it is ensured that can be by paper pulp
It pushes.
The maximum height of the arc section 3 is no more than the peripheral wall height of stock tank 1.When paper pulp passes through beater roll 5, paper pulp is used
It can splash under the action of property power, the height of arc section 3 is lower, can allow paper pulp under gravity, falls as early as possible
Get off, and fall in the downstream side of beater roll 5.
Fig. 2 is the A direction views of Fig. 1, i.e. vertical view, and arrow represents pulp flow direction in figure, with reference to attached drawing as it can be seen that described
Partition wall 10 is additionally provided in stock tank 1 and washes drum 12, there are gap, the beater rolls 5 between the end of the partition wall 10 and stock tank 1
Positioned at the side of partition wall 10, the central shaft 7 of the beater roll 5 is across on the abutment wall of partition wall 10 and stock tank 1.Partition wall 10 is by stock tank
1 internal insulation gives paper pulp to form an annular Flow channel, while central shaft 7 is by being supported on partition wall 10, by beater roll
5 are vacantly arranged in stock tank 1, and steric requirements is provided to 5 rotating operation of beater roll.
The relatively parallel proper alignment of axial direction of several bed plate 4 along beater rolls 5.Relatively flat row is in order to ensure paper
For slurry when by adjacent bed plate 4, the flowing that can be maintained on the axial direction of beater roll 5 is relatively at the uniform velocity.
Axial direction indention shape of several described bed plaves 4 along beater roll 5, each bed plate 4 have several
4 compositions of bed plate of equal length, adjacent 4 " V "-shaped arrangements of bed plate.For paper pulp when by beater roll 5, paper pulp is by fly cutter
6 promotions are moved along the radial direction of beater roll 5, and paper pulp is in the case where the bed plate 4 of zigzag fashion acts on, from the vertex of zigzag fashion
Bottom point is impacted, then adjacent vertex is slowly flow to from bottom point, is recycled successively, increases the flow fluctuation of paper pulp, paper pulp
It is beaten more uniform by beater roll 5.
Axial direction undulate shape of several described bed plaves 4 along beater roll 5, each bed plate 4 is by one etc.
4 undulate sigmoids of bed plate of elasticity form, and 3 surface of arc section offers 4 slot of bed plate of wave-like, bed plate 4
Piece is inserted and secured in 4 slot of bed plate.Extend effective length of the bed plate 4 on 5 axial direction of beater roll, bed plate 4 and fly cutter 6
Effective active area range it is big, paper pulp pass through beater roll 5 when, the crooked route of bed plate 4 is followed to flow repeatedly, improves paper pulp
Mechanical treatment efficient.
The central shaft 7 of the beater roll 5 is connected with driving device 11.During present invention work, fly cutter is given by driving device 11
Roller 5 provides driving power.
The technical means disclosed in the embodiments of the present invention is not limited to the technical means disclosed in the above technical means, and is further included
By more than technical characteristic arbitrarily the formed technical solution of combination.
Using above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the content on specification, it is necessary to determine its technical scope according to right.
Claims (1)
1. a kind of beater that can change pulp flow direction repeatedly, including stock tank, partition wall is provided in the stock tank, wash drum and
Beater roll, the bottom of the stock tank are provided with sewage draining exit and drain hole, and there are gap, institutes between the end of the partition wall and stock tank
State the side that beater roll is located at partition wall, the center of the beater roll through there is a central shaft, the central shaft of the beater roll across
On the abutment wall of partition wall and stock tank, the surface of the beater roll is equipped with several fly cuttves, when which works, in stock tank
Paper pulp is injected, beater roll rotates clockwise, and paper pulp flow to downstream side from the upstream side of beater roll, it is characterized in that the slurry
The bottom in pond is provided with slope, the upstream side of the pulp flow when slope is located at the pulp beating machine working condition, institute
It states slope and includes ascent stage and arc section, vertical lower gradient raising of the ascent stage from stock tank bottom towards beater roll, institute
The downstream side circular arc for stating arc section from vertical lower towards the beater roll of beater roll is bent, the radian and fly cutter of the arc section
The circumference arc of roller is consistent, and the arc section is equipped with several bed plaves, several axial directions of bed plate along beater roll
Undulate shape or zigzag fashion；
When axial direction indention shape of several described bed plaves along beater roll, each bed plate has that several are isometric
The shear bar composition of degree, the " V "-shaped arrangement of adjacent shear bar；
When axial direction undulate shape of several described bed plaves along beater roll, each bed plate is by the elasticity such as one
Shear bar undulate sigmoid form, the circular arc section surface offers the bed plate slot of wave-like, and shear bar is inserted into simultaneously
It is fixed in bed plate slot；
The edge of a knife of the fly cutter is at right angles triangular shaped, and the right-angle side of the edge of a knife of right-angle triangle is rotated towards beater roll
Direction；
The relatively parallel proper alignment of axial direction of several described bed plaves along beater roll；
Several described fly cuttves are installed on the center of circle line of beater roll；
The maximum height of the arc section is no more than the peripheral wall height of stock tank；
The central shaft of the beater roll is connected with driving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606951.2A CN106087517B (en) | 2016-07-29 | 2016-07-29 | A kind of beater that can change pulp flow direction repeatedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606951.2A CN106087517B (en) | 2016-07-29 | 2016-07-29 | A kind of beater that can change pulp flow direction repeatedly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106087517A CN106087517A (en) | 2016-11-09 |
| CN106087517B true CN106087517B (en) | 2018-07-06 |
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ID=57478497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610606951.2A Active CN106087517B (en) | 2016-07-29 | 2016-07-29 | A kind of beater that can change pulp flow direction repeatedly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106087517B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1380524A (en) * | 1921-06-07 | Pulp-producing- apparatus | ||
| CN2078338U (en) * | 1990-05-25 | 1991-06-05 | 石家庄市获鹿县轻工机械厂 | Assembly of fly-cutting roller for beater |
| CN202688759U (en) * | 2012-07-10 | 2013-01-23 | 安徽雪龙纤维科技股份有限公司 | Mounting device for fly-cutter roller clamping wood of trough-style pulp beater |
| CN205975189U (en) * | 2016-07-29 | 2017-02-22 | 无锡乐华自动化科技有限公司 | Can change beating machine of paper pulp flow direction repeatedly |
-
2016
- 2016-07-29 CN CN201610606951.2A patent/CN106087517B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1380524A (en) * | 1921-06-07 | Pulp-producing- apparatus | ||
| CN2078338U (en) * | 1990-05-25 | 1991-06-05 | 石家庄市获鹿县轻工机械厂 | Assembly of fly-cutting roller for beater |
| CN202688759U (en) * | 2012-07-10 | 2013-01-23 | 安徽雪龙纤维科技股份有限公司 | Mounting device for fly-cutter roller clamping wood of trough-style pulp beater |
| CN205975189U (en) * | 2016-07-29 | 2017-02-22 | 无锡乐华自动化科技有限公司 | Can change beating machine of paper pulp flow direction repeatedly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106087517A (en) | 2016-11-09 |
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Effective date of registration: 20210427 Address after: 210000 room 230, Pioneer Center, No.38, Pancheng back street, Pancheng street, Jiangbei new district, Nanjing City, Jiangsu Province Patentee after: Jiangsu Changshen Technology Co.,Ltd. Address before: 224600 Jiangsu province Yancheng City County ring Coastal Economic Development Zone Patentee before: Jiangsu Fuxing Paper Co.,Ltd. Effective date of registration: 20210427 Address after: 224600 north side of Gangdian Avenue, west side of s326 provincial road, coastal economic development zone, Xiangshui County, Yancheng City, Jiangsu Province Patentee after: Jiangsu Keyi Wood Industry Co.,Ltd. Address before: 210000 room 230, Pioneer Center, No.38, Pancheng back street, Pancheng street, Jiangbei new district, Nanjing City, Jiangsu Province Patentee before: Jiangsu Changshen Technology Co.,Ltd. |
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Effective date of registration: 20240723 Address after: 224600 Coastal Economic Development Zone of Xiangshui County, Yancheng City, Jiangsu Province Patentee after: Fuda Lingang Water Supply and Drainage Co.,Ltd. in Xiangshui County Country or region after: China Address before: 224600 north of Gangdian Avenue and west of s326 provincial road, coastal economic development zone, Xiangshui County, Yancheng City, Jiangsu Province (in the yard of Jinghuan Longheng Paper Co., Ltd.) Patentee before: Jiangsu Keyi Wood Industry Co.,Ltd. Country or region before: China |