CN113930993A - Adjustable dewatering device for head box - Google Patents
Adjustable dewatering device for head box Download PDFInfo
- Publication number
- CN113930993A CN113930993A CN202111317607.9A CN202111317607A CN113930993A CN 113930993 A CN113930993 A CN 113930993A CN 202111317607 A CN202111317607 A CN 202111317607A CN 113930993 A CN113930993 A CN 113930993A
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- Prior art keywords
- pull rod
- baffle
- dewatering
- box body
- upper box
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/02—Head boxes of Fourdrinier machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/04—Head boxes of cylinder machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
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- Paper (AREA)
Abstract
The invention discloses an adjustable dewatering device for a flow box, which belongs to the technical field of paper machines and comprises a dewatering box, wherein the dewatering box comprises an upper box body and a water collecting hopper, the upper box body is integrally connected to the water collecting hopper, side wall plates are integrally formed on two sides of the upper box body, a drain pipe is fixedly installed at the bottom of the water collecting hopper, a plurality of partition plates are fixedly installed between the inner walls of the upper box body, the inner cavity of the upper box body is divided into a plurality of partition cavities by the plurality of partition plates, a dewatering partition plate is fixedly installed between the partition plates and the inner wall, close to the water collecting hopper, of the upper box body, a plurality of fixing holes are formed in the dewatering partition plate, and an adjusting assembly is installed between one side, far away from the water collecting hopper, of the dewatering partition plate and the upper box body. In evenly dividing the upper box body with water through a plurality of subregion chambeies, adjust the size of opening and close of fixed orifices through adjusting part to the change improves the dewatering capacity of head box, thereby improves enterprise's productivity, and the water that takes off passes through the water catch bowl mass flow and discharges.
Description
Technical Field
The invention relates to the technical field of paper machines, in particular to an adjustable dewatering device for a head box.
Background
The headbox is a critical part of modern paper machines. The structure and performance of the pulp flowing box have decisive effect on the formation of paper sheets and the quality of paper, the existing pulp flowing box depends on two sheets with radian in a dewatering box and vacuum suction of a pipeline to remove water in pulp, and the pulp flowing box has the following defects: (1) because the sheets in the box are fixed in shape, the dewatering conditioning capacity for the slurry is limited. The production of paper is affected, and the productivity is reduced; (2) the dewatering regulation capacity of the head box can only be regulated by changing the vacuum suction force through a pipeline, and the energy consumption of an enterprise can be increased.
Disclosure of Invention
In view of the above-mentioned technical drawbacks, it is an object of the present invention to provide an adjustable dewatering device for a headbox.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides an adjustable dewatering device for a flow box, which comprises a dewatering box, wherein the dewatering box comprises an upper box body and a water collecting hopper, the upper box body is integrally connected onto the water collecting hopper, side wall plates are integrally formed on two sides of the upper box body, a drain pipe is fixedly installed at the bottom of the water collecting hopper, a plurality of partition plates are fixedly installed between the inner walls of the upper box body, the inner cavity of the upper box body is divided into a plurality of partition cavities by the plurality of partition plates, a dewatering partition plate is fixedly installed between each partition plate and the inner wall, close to the water collecting hopper, of the upper box body, a plurality of fixing holes are formed in each dewatering partition plate, and an adjusting assembly is installed between one side, far away from the water collecting hopper, of each dewatering partition plate and the upper box body.
In a preferred embodiment, a flange is integrally formed at one end of the upper box body, which is far away from the water collecting hopper, a plurality of reinforcing ribs are fixedly installed between the flange and the outer wall of the upper box body, and a gap is formed at one side of the flange, which is close to the inner cavity of the upper box body.
The water collecting hopper is of a funnel-shaped structure, a drain pipe is fixedly sleeved at the bottom of the small-diameter end of the water collecting hopper, and a connecting flange is integrally formed on the outer wall of one end, far away from the water collecting hopper, of the drain pipe.
In an embodiment of the present invention, the dewatering partition plate includes a horizontal end and an inclined end, the inclined end is formed on one side of the horizontal end, the side away from the inclined end and the horizontal end is fixedly connected to the partition plate and the upper box body on two sides of the partition cavity, the horizontal end is provided with two rows of fixing holes, and the two rows of fixing holes are staggered.
An embodiment of preferred, adjusting part includes long pull rod, well pull rod and short pull rod, all slip on the partition chamber both sides curb plate and cup jointed long pull rod, well pull rod and short pull rod, the one end of long pull rod, well pull rod and short pull rod all slides and runs through the outer wall and the fixed connection handle of last box, the other end of long pull rod, well pull rod and short pull rod slides and runs through to the inner chamber in partition chamber and first baffle of fixed connection, second baffle and third baffle respectively, first baffle, second baffle and third baffle all closely laminate the dehydration baffle, and all open on first baffle, second baffle and the third baffle and have a plurality of regulation holes.
In an embodiment, the long pull rod, the middle pull rod and the short pull rod are respectively and fixedly welded on one sides of the first baffle, the second baffle and the third baffle, which are far away from the dehydration partition plate, the first baffle is of a Z-shaped structure, and the second baffle and the third baffle are of a T-shaped structure.
In a preferred embodiment, positioning components are arranged between the long pull rod, the middle pull rod and the short pull rod and the side wall plate, the positioning component comprises a mounting seat, the mounting seat is fixedly mounted on the outer wall of the side wall plate, a mounting hole is formed between one end of the mounting seat close to the partition cavity and the side wall plate, the mounting hole is internally sleeved with a shaft sleeve in an interference manner, the long pull rod, the middle pull rod and the short pull rod penetrate through the shaft sleeve in a sliding manner, the long pull rod, the middle pull rod and the short pull rod on the inner wall of the side wall plate are fixedly sleeved with stop blocks, one end of the mounting seat far away from the side wall plate is provided with a retainer ring hole, the elastic retainer ring is sleeved in the retainer ring hole in an interference manner, the end surface of the mounting seat is provided with the end cover through a bolt, the end cover is tightly pressed on the elastic retaining ring, and the end faces of the long pull rod, the middle pull rod and the short pull rod, which are close to one end of the handle, are fixedly connected with a threaded section, and the threaded section is sleeved in the handle through a threaded structure.
In an embodiment of the invention, the distance from the stop block to the thread section is equal to the sum of the thickness of the side wall plate, the thickness of the mounting seat, the thickness of the end cover and the distance between the centers of two adjacent fixing holes, the cross section of the elastic check ring is of a J-shaped structure, and the inner wall of the small-diameter end of the elastic check ring is attached to the outer walls of the long pull rod, the middle pull rod and the short pull rod.
The invention has the beneficial effects that:
1. the dewatering box and the pulp flowing box are conveniently connected and fixed through the flanges and the gaps, water is uniformly distributed into the upper box body through the partition cavities, and the dewatering partition plates are convenient for water flow to the fixed holes through the inclined ends, so that the dewatering efficiency is accelerated;
2. the positions of the long pull rod, the middle pull rod and the short pull rod are kept fixed by the guide sliding of the shaft sleeve on the long pull rod, the middle pull rod and the short pull rod, the first baffle, the second baffle and the third baffle are tightly attached to the dehydration partition plate, and the first baffle, the second baffle and the third baffle can realize the purpose of sealing and adjusting the fixed holes;
3. when the handle is pushed and pulled, the long pull rod, the middle pull rod and the short pull rod respectively drive the first baffle, the second baffle and the third baffle to slide, the area opposite to the adjusting holes and the fixing holes on the first baffle, the second baffle and the third baffle is changed, the flowing size of the fixing holes is adjusted, the adjusting purpose of the dehydration capacity is achieved, the productivity of an enterprise is improved, the vacuum suction of a pipeline is combined for adjustment, and the energy consumption of the enterprise can be effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front view of an adjustable dewatering device for a headbox according to an embodiment of the present invention.
FIG. 2 is a schematic top view of the present invention.
FIG. 3 is a left side view of a partial structure of the present invention.
FIG. 4 is a schematic top view of a dewatering partition according to the present invention.
Fig. 5 is a structural diagram illustrating a state after the flow size of the fixing hole is adjusted according to the present invention.
FIG. 6 is an enlarged view of the structure at A in FIG. 1 according to the present invention.
FIG. 7 is a schematic view of the structure at B in FIG. 1 according to the present invention.
Description of reference numerals: 1. a dewatering box; 11. an upper box body; 12. a side wall panel; 13. a water collecting hopper; 14. a drain pipe; 15. a flange; 16. a reinforcing rib plate; 17. a connecting flange; 2. a dehydration partition plate; 21. an angled end; 22. a horizontal end; 3. a fixing hole; 4. an adjustment assembly; 41. a long pull rod; 42. a middle pull rod; 43. a short pull rod; 44. a first baffle plate; 45. a second baffle; 46. a third baffle plate; 47. an adjustment hole; 48. a handle; 49. a positioning assembly; 491. a mounting seat; 492. mounting holes; 493. a shaft sleeve; 494. a stop block; 495. a retainer ring hole; 496. a circlip; 497. an end cap; 498. a threaded segment; 5. a partition plate; 6. a partition chamber; 7. a void.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1 to 7, the invention provides an adjustable dewatering device for a head box, which comprises a dewatering box 1, wherein the dewatering box 1 comprises an upper box body 11 and a water collecting hopper 13, the upper box body 11 is integrally connected to the water collecting hopper 13, side wall plates 12 are integrally formed on two sides of the upper box body 11, a drain pipe 14 is fixedly installed at the bottom of the water collecting hopper 13, a plurality of partition plates 5 are fixedly installed between the inner walls of the upper box body 11, the inner cavity of the upper box body 11 is divided into a plurality of partition cavities 6 by the plurality of partition plates 5, a dewatering partition plate 2 is fixedly installed between the partition plates 5 and the inner wall of the upper box body 11 close to the water collecting hopper 13, a plurality of fixing holes 3 are formed in the dewatering partition plate 2, and an adjusting component 4 is installed between one side of the dewatering partition plate 2 far away from the water collecting hopper 13 and the upper box body 11. In the box 11 is arrived with the water equipartition through a plurality of subregion chambeies 6, adjust the size of opening and close of fixed orifices 3 through adjusting part 4 to the change improves the dewatering capacity of head box, thereby improves the productivity of enterprise, and the water of taking off passes through water catch bowl 13 mass flow and discharges.
Furthermore, one end of the upper box body 11, which is far away from the water collecting hopper 13, is integrally formed with a flange 15, a plurality of reinforcing ribs 16 are fixedly installed between the flange 15 and the outer wall of the upper box body 11, one end of the flange 15, which is close to the inner cavity of the upper box body, is provided with a gap 7, and water can conveniently flow into the upper box body 11 from the upper side through the gap 7.
Further, water collecting bucket 13 is for leaking hopper-shaped structure, and water collecting bucket 13's path end bottom is fixed cup joints drain pipe 14, and drain pipe 14 keeps away from water collecting bucket 13's one end outer wall integrated into one piece and is equipped with flange 17, concentrates water through water collecting bucket 13 to connect outside water pipe, the drainage of being convenient for through drain pipe 14 and flange 17.
Further, dehydration baffle 2 includes horizontal end 22 and slope end 21, and one side integrated into one piece of horizontal end 22 is equipped with slope end 21, and one side that slope end 21 and horizontal end 22 kept away from mutually is the division board 5 and the last box 11 of 6 both sides of fixed connection subregion chamber respectively, and it has two rows of fixed orificess 3 to open on the horizontal end 22, and two rows of fixed orificess 3 crisscross respectively, is convenient for rivers flow direction fixed orifices 3 through slope end 21, is convenient for dewater.
The adjusting component 4 comprises a long pull rod 41, a middle pull rod 42 and a short pull rod 43, the long pull rod 41, the middle pull rod 42 and the short pull rod 43 are sleeved on the side wall plates 12 on two sides of the partition cavity 6 in a sliding mode, one end of the long pull rod 41, one end of the middle pull rod 42 and one end of the short pull rod 43 penetrate through the outer wall of the upper box body 11 in a sliding mode and are fixedly connected with a handle 48, the other end of the long pull rod 41, the other end of the middle pull rod 42 and the other end of the short pull rod 43 penetrate through the inner cavity of the partition cavity 6 in a sliding mode and are fixedly connected with a first baffle 44, a second baffle 45 and a third baffle 46 respectively, the first baffle 44, the second baffle 45 and the third baffle 46 are tightly attached to the dehydration baffle 2, a plurality of adjusting holes 47 are formed in the first baffle 44, the second baffle 45 and the third baffle 46, the long pull rod 41, the middle pull rod 42 and the short pull rod 43 are fixedly welded to the first baffle 44, the second baffle 45 and the third baffle 46 far away from the dehydration baffle 2 respectively, the first baffle 44 is of a Z structure, second baffle 45 and third baffle 46 are T type structure, then through handle 48 pulling long pull rod 41, well pull rod 42 and short pull rod 43, first baffle 44, second baffle 45 and third baffle 46 are pulled respectively to long pull rod 41, well pull rod 42 and short pull rod 43 to change the just right area of regulation hole 47 and fixed orifices 3 on first baffle 44, second baffle 45 and the third baffle 46, realize the flow size regulation of fixed orifices 3, reach the regulation mesh of dewatering ability.
A positioning assembly 49 is arranged between the long pull rod 41, the middle pull rod 42 and the short pull rod 43 and the side wall plate 12, the positioning assembly 49 comprises an installation seat 491, the installation seat 491 is fixedly installed on the outer wall of the side wall plate 12, an installation hole 492 is formed between one end of the installation seat 491 close to the partition cavity 6 and the side wall plate 12, a sleeve 493 is sleeved in the installation hole 492 in an interference manner, the long pull rod 41, the middle pull rod 42 and the short pull rod 43 slidably penetrate through the sleeve 493, a stop block 494 is fixedly sleeved on the long pull rod 41, the middle pull rod 42 and the short pull rod 43 on the inner wall of the side wall plate 12, a retainer hole 495 is formed in one end of the installation seat 491 far from the side wall plate 12 in an interference manner, an elastic retainer ring 496 is sleeved in the retainer hole 495 in an interference manner, an end face of the installation seat 491 is provided with an end cover 497 through a bolt, the end cover 497 is tightly pressed on the elastic retainer ring 496, a threaded section is fixedly connected to one end faces of the long pull rod 41, the middle pull rod 42 and the short pull rod 43 close to the handle 48, a threaded section is sleeved in the handle 48 through a threaded structure, the distance from the stop block 494 to the threaded section 498 is equal to the thickness of the side wall plate 12, the thickness of the mounting seat 491, the thickness of the end cover 497 and the sum of the center distances of the two adjacent fixing holes 3, the cross section of the elastic retainer 496 is of a J-shaped structure, the inner wall of the small-diameter end of the elastic retainer 496 is attached to the outer walls of the long pull rod 41, the middle pull rod 42 and the short pull rod 43, the long pull rod 41, the middle pull rod 42 and the short pull rod 43 are guided and slide through the shaft sleeve 493, the positions of the long pull rod 41, the middle pull rod 42 and the short pull rod 43 are guaranteed to be kept fixed, the first baffle 44, the second baffle 45 and the third baffle 46 are guaranteed to be closely attached to the dewatering partition plate 2, and meanwhile, the stop block 494 is limited and positioned when the first baffle 44, the second baffle 45 and the third baffle 46 are pulled by the long pull rod 41, the middle pull rod 42 and the short pull rod 43, and deformation caused by mutual collision of the first baffle 44, the second baffle 45 and the third baffle 46 is avoided.
When the device is used, water can conveniently flow into the upper box body 11 from the upper part through the gap 7, the water is uniformly distributed into the upper box body 11 through the plurality of partition cavities 6, the dehydration partition plate 2 is convenient for water flow to flow towards the fixed holes 3 through the inclined end 21, the long pull rod 41, the middle pull rod 42 and the short pull rod 43 can be guided and slid through the shaft sleeve 493, the positions of the long pull rod 41, the middle pull rod 42 and the short pull rod 43 can be kept fixed, the first baffle plate 44, the second baffle plate 45 and the third baffle plate 46 can be tightly attached to the dehydration partition plate 2, when the handle 48 is pushed and pulled, the long pull rod 41, the middle pull rod 42 and the short pull rod 43 respectively drive the first baffle plate 44, the second baffle plate 45 and the third baffle plate 46 to slide, the opposite area of the adjusting holes 47 on the first baffle plate 44, the second baffle plate 45 and the third baffle plate 46 and the fixed holes 3 can be changed, the flow size adjustment of the fixed holes 3 can be realized, the adjustment purpose of the dehydration capacity can be achieved, thereby the productivity of enterprises can be improved, combine pipeline vacuum suction to adjust, can effectively reduce the energy consumption of enterprise, after the dehydration, concentrate water through water collecting bucket 13 to connect outside water pipe, the drainage of being convenient for through drain pipe 14 and flange 17.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. An adjustable dewatering device for a headbox, comprising a dewatering box (1), characterized in that: dewatering box (1) includes box (11) and catchment fill (13), go up box (11) integrated connection on catchment fill (13), the both sides integrated into one piece of going up box (11) is equipped with side wall board (12), the bottom fixed mounting drain pipe (14) of catchment fill (13), go up a plurality of division boards (5) of fixed mounting between the inner wall of box (11), it is a plurality of division board (5) will go up box (11) inner chamber and cut apart into a plurality of subregion chambeies (6), division board (5) and last box (11) are close to fixed mounting dewatering baffle (2) between the inner wall of catchment fill (13), it has a plurality of fixed orificess (3) to open on dewatering baffle (2), dewatering baffle (2) are kept away from one side of catchment fill (13) and last box (11) between installation adjusting part (4).
2. An adjustable dewatering apparatus for a headbox, as recited in claim 1, characterized by: a flange (15) is integrally formed at one end, far away from the water collecting hopper (13), of the upper box body (11), a plurality of reinforcing rib plates (16) are fixedly installed between the flange (15) and the outer wall of the upper box body (11), and a gap (7) is formed in one side, close to the inner cavity of the upper box body (11), of the flange (15).
3. An adjustable dewatering apparatus for a headbox, as recited in claim 1, characterized by: the water collecting hopper (13) is of a funnel-shaped structure, a drain pipe (14) is fixedly sleeved at the bottom of the small-diameter end of the water collecting hopper (13), and a connecting flange (17) is integrally formed on the outer wall of one end, far away from the water collecting hopper (13), of the drain pipe (14).
4. An adjustable dewatering apparatus for a headbox, as recited in claim 1, characterized by: dehydration baffle (2) are including horizontal end (22) and slope end (21), one side integrated into one piece of horizontal end (22) is equipped with slope end (21), one side that slope end (21) and horizontal end (22) kept away from is the division board (5) and the last box (11) of fixed connection subregion chamber (6) both sides respectively, it has two rows of fixed orificess (3) to open on horizontal end (22), and two rows of fixed orificess (3) crisscross difference.
5. An adjustable dewatering apparatus for a headbox, as recited in claim 1, characterized by: the adjusting component (4) comprises a long pull rod (41), a middle pull rod (42) and a short pull rod (43), the side wall plates (12) at the two sides of the partition cavity (6) are sleeved with a long pull rod (41), a middle pull rod (42) and a short pull rod (43) in a sliding way, one end of each of the long pull rod (41), the middle pull rod (42) and the short pull rod (43) penetrates through the outer wall of the upper box body (11) in a sliding manner and is fixedly connected with a handle (48), the other ends of the long pull rod (41), the middle pull rod (42) and the short pull rod (43) are slidably penetrated into the inner cavity of the partition cavity (6) and are respectively fixedly connected with a first baffle (44), a second baffle (45) and a third baffle (46), the first baffle (44), the second baffle (45) and the third baffle (46) are tightly attached to the dehydration clapboard (2), and a plurality of adjusting holes (47) are formed in the first baffle plate (44), the second baffle plate (45) and the third baffle plate (46).
6. An adjustable dewatering apparatus for a headbox, as recited in claim 5, characterized by: the long pull rod (41), the middle pull rod (42) and the short pull rod (43) are fixedly welded on one sides, far away from the dehydration partition plate (2), of the first baffle plate (44), the second baffle plate (45) and the third baffle plate (46) respectively, the first baffle plate (44) is of a Z-shaped structure, and the second baffle plate (45) and the third baffle plate (46) are of a T-shaped structure.
7. An adjustable dewatering apparatus for a headbox, as recited in claim 5, characterized by: a positioning assembly (49) is arranged between the long pull rod (41), the middle pull rod (42), the short pull rod (43) and the side wall plate (12), the positioning assembly (49) comprises an installation seat (491), the installation seat (491) is fixedly installed on the outer wall of the side wall plate (12), an installation hole (492) is formed between one end, close to the partition cavity (6), of the installation seat (491) and the side wall plate (12), a sleeve (493) is sleeved in the installation hole (492) in an interference manner, a stop block (494) is fixedly sleeved on the long pull rod (41), the middle pull rod (42) and the short pull rod (43) at the inner wall of the side wall plate (12) in a sliding manner and penetrates through the sleeve (493), a retainer hole (495) is formed in one end, far away from the side wall plate (12), of the retainer hole (495) is sleeved with an elastic retainer ring (496) in an interference manner, the end face of the mounting seat (491) is provided with an end cover (497) through a bolt, the end cover (497) is tightly pressed on the elastic retainer ring (496), the end faces of the long pull rod (41), the middle pull rod (42) and the short pull rod (43) close to the handle (58) are fixedly connected with a threaded section (498), and the threaded section (498) is sleeved in the handle (48) through a threaded structure.
8. An adjustable dewatering apparatus for a headbox, as recited in claim 7, wherein: the distance between the stop block (494) and the thread section (498) is equal to the sum of the thickness of the side wall plate (12), the thickness of the mounting seat (491), the thickness of the end cover (497) and the center distance of two adjacent fixing holes (3), the cross section of the elastic retainer ring (496) is of a J-shaped structure, and the inner wall of the small-diameter end of the elastic retainer ring (496) is attached to the outer walls of the long pull rod (41), the middle pull rod (42) and the short pull rod (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111317607.9A CN113930993B (en) | 2021-11-09 | 2021-11-09 | Adjustable dewatering device for headbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111317607.9A CN113930993B (en) | 2021-11-09 | 2021-11-09 | Adjustable dewatering device for headbox |
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| CN113930993A true CN113930993A (en) | 2022-01-14 |
| CN113930993B CN113930993B (en) | 2023-07-11 |
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| CN203021864U (en) * | 2012-12-26 | 2013-06-26 | 浙江尚德能源科技有限公司 | Dehydration device applicable to head box of inclined net paper machine |
| JP2017223152A (en) * | 2016-06-15 | 2017-12-21 | 三菱重工業株式会社 | Waist gate valve and turbocharger |
| CN207468977U (en) * | 2017-11-21 | 2018-06-08 | 郑州登电豫嵩新型装饰板业有限公司 | A kind of stream slurry laminator vaccum dewatering box |
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| US20200040527A1 (en) * | 2018-08-03 | 2020-02-06 | Voith Patent Gmbh | Device, machine and method for dewatering a wet-laid fibrous web |
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