CN107385987B - Inclined wire papermaking equipment - Google Patents
Inclined wire papermaking equipment Download PDFInfo
- Publication number
- CN107385987B CN107385987B CN201710831442.4A CN201710831442A CN107385987B CN 107385987 B CN107385987 B CN 107385987B CN 201710831442 A CN201710831442 A CN 201710831442A CN 107385987 B CN107385987 B CN 107385987B
- Authority
- CN
- China
- Prior art keywords
- dewatering
- upper lip
- box
- air cylinder
- section
- Prior art date
- 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.)
- Active
Links
- 239000002002 slurry Substances 0.000 claims abstract description 66
- 238000009826 distribution Methods 0.000 claims abstract description 23
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 17
- 239000010935 stainless steel Substances 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 210000000481 breast Anatomy 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 11
- 239000004698 Polyethylene Substances 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 238000000462 isostatic pressing Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000018044 dehydration Effects 0.000 description 8
- 238000006297 dehydration reaction Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 5
- 239000011440 grout Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- D21F1/009—Fibre-rearranging devices
-
- 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
- D21F1/48—Suction apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Paper (AREA)
Abstract
The invention relates to inclined wire papermaking equipment which comprises an equal-pressure pulp distribution tank, a stainless steel pulp distribution device, an inclined wire pulp distribution box, a dewatering box, a breast roll and a forming wire, wherein the equal-pressure pulp distribution tank comprises an upper tank body, a lower tank body, supporting legs and a pore plate, the stainless steel pulp distribution device comprises a pulp distribution device body, a plurality of stainless steel pipes are distributed on the pulp distribution device body, the inclined wire pulp distribution box comprises a box body, an upper lip assembly is movably arranged in the box body, the box body is of a closed structure, the upper lip assembly comprises a rear upper lip plate and a front upper lip plate, the rear upper lip plate is rotationally connected with the front upper lip plate, a plurality of cross beams are fixedly arranged on the box body, and a first air cylinder, a first turbine box, a second air cylinder and a second turbine box are fixedly arranged on the cross beams, and the dewatering box comprises a box body, a lower dewatering wire, an upper dewatering wire, a drain pipe and a pulp outlet pipe. The method has the advantages of reasonable parameter setting, uniform and stable slurry flow and good forming effect.
Description
Technical Field
The invention relates to the field of papermaking equipment, in particular to a flow-through and forming part.
Background
The paper machine is a machine for making paper from a pulp aqueous suspension meeting the papermaking requirements by the processes of screen dehydration, mechanical extrusion dehydration, drying and the like. The paper machine comprises 3 main parts for forming, squeezing and drying, and is equipped with necessary finishing, reeling and driving devices, and auxiliary systems for pulp feeding, pulp and white water circulation, vacuum, ventilation and exhaust, broke treatment and lubrication, automatic control and the like. Wherein the forming part comprises a head box, a breast roll, a forming net, a water suction box, a couch roll and other structures; the forming section is preceded by a flow section which typically includes a buffer tank or a distribution tank or a feed cone, a distributor, etc., and is primarily designed to eliminate the slurry pulse and achieve a uniform distribution of the slurry as soon as it enters the paper machine.
However, the existing pulp distribution tank has larger design errors in manufacturing, especially when used for paper machines with smaller pulp distribution amount and larger width; when the slurry flows through sharp bends, gates and other parts, unstable secondary flows or separation of fluid and pipe walls can occur, and the distribution effect of the slurry flows is adversely affected. In addition, due to unreasonable design, pressure difference exists in pulp flow entering each branch pipe, and the quality of papermaking is different.
In addition, the existing pulp distributor generally has the defects of non-compliance with hydrodynamic requirements, unreasonable parameter setting, unreasonable material selection and the like, so that pulp flows enter each branch pipe to have pressure difference, the quality of papermaking is different, the service life is short, and the practical efficiency is poor.
Moreover, the low forming consistency of the long fibers means that a large amount of water needs to be removed during papermaking, and thus the wire slice openings tend to produce a forming water layer as deep as 40-150mm, which makes pattern control of the fourdrinier machine difficult. To effectively control this flow, the cage requires side baffles and other closure means. Inclined wire headboxes have been developed to solve these problems and paper made with low consistency stock on inclined wire headboxes generally form well and have a very uniform texture. However, because the inclined wire headbox has a longer wire length, it requires a longer upper lip assembly, and therefore the accuracy of the activity of the upper lip assembly is highly desirable, directly affecting the forming parameters. Existing inclined wire headboxes generally suffer from deficiencies in upper lip assembly control.
The traditional mesh cloth dehydration adopts a single-layer dehydration mesh, and the mesh has high elongation, large normal mesh deformation and uneven dehydration, so that the white water concentration is large, the paper uniformity is poor, and the paper moisture deviation is large. And the existing dewatering boxes are controlled manually, so that the degree of automation is low, the precision is poor, and the consumed manpower and material resources are large.
Therefore, how to improve the existing papermaking equipment to overcome the above problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention mainly aims to provide inclined wire papermaking equipment with reasonable parameter setting, uniform and stable pulp flow and good forming effect, which is provided with an isobaric pulp distribution tank with equal pulp outlet pressure and stable pulp outlet and can effectively attenuate pulp flow pulsation; the slurry distributor has the advantages of improved structure, reasonable parameter setting, long service life and convenient maintenance; the inclined wire headbox has the advantages of closed forming structure design, convenient forming parameter adjustment and box body overpressure protection function; the dewatering box has the advantages of automatic control, good dewatering effect and long service life.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides an inclined wire papermaking equipment, includes that the cloth thick liquid jar of isostatic pressing, stainless steel cloth thick liquid ware, inclined wire flow box, dewatering box, breast roll and forming wire, its characterized in that:
the isobaric pulp distribution tank comprises an upper tank body, a lower tank body, supporting legs and a pore plate, wherein the pore plate is arranged between the upper tank body and the lower tank body, the supporting legs support the upper tank body and the lower tank body, the lower end of the lower tank body is provided with a pulp inlet, the side wall of the upper tank body is connected with a plurality of pulp outlet connectors, the upper tank body is a cylindrical tank body, at least one group of pulp outlet connectors are arranged, and the pulp outlet connectors in the same group are uniformly distributed along the circumferential direction of the upper tank body and are at the same height;
the stainless steel slurry distributor comprises a slurry distributor body, wherein a plurality of stainless steel pipes are distributed on the slurry distributor body, each pipe comprises a circular pipe section and a special-shaped pipe section, each circular pipe section is an inlet, each special-shaped pipe section is an outlet, each special-shaped pipe section comprises a connecting section, a transition section and a square hole section, the connecting sections are sleeved on the circular pipe sections, the inner diameters of the connecting sections are equal to the outer diameters of the circular pipe sections, the side lengths of inner holes of the square hole sections are equal to the inner diameters of the connecting sections, and the transition sections are connected with the connecting sections and the square hole sections so that round holes naturally transition to square holes;
the inclined wire headbox comprises a box body, an upper lip assembly is movably arranged in the box body, the box body is of a closed structure, the upper lip assembly comprises a rear upper lip plate and a front upper lip plate, the rear upper lip plate is rotationally connected with the front upper lip plate, a plurality of cross beams are fixedly arranged on the box body, a first air cylinder, a second air cylinder and a second air cylinder are fixedly arranged on the cross beams, the first air cylinder is provided with a first air cylinder rod, the first air cylinder is provided with a first turbine rod, the second air cylinder is provided with a second air cylinder rod, the second air cylinder is provided with a second turbine rod, the front end of the first air cylinder rod is rotationally connected with the rear end of the rear upper lip plate, the front end of the first turbine rod is rotationally connected with the middle section of the front upper lip plate, and the front end of the second air cylinder rod is rotationally connected with the front upper lip plate; the first air cylinder rod and the second air cylinder rod are telescopic and used for adjusting the upper lip assembly to a large extent up and down, and the first turbine rod and the second turbine rod are telescopic and used for fine adjustment up and down of the upper lip assembly;
the dewatering box comprises a dewatering box body, a lower dewatering net, an upper dewatering net, a drain pipe and a slurry outlet pipe; the upper dewatering net is arranged above the dewatering box body, the upper dewatering net is covered on the lower dewatering net, a lower dewatering tank is arranged on the lower dewatering net, an upper dewatering tank is arranged on the upper dewatering net, the lower dewatering tank and the upper dewatering tank are correspondingly communicated, the upper dewatering tank comprises an inclined flow section and a direct current section, the opening of the inclined flow section is small in size, the direct current section is communicated with the outlet of the inclined flow section, and the width of the lower dewatering tank is not larger than that of the direct current section; the dewatering box body comprises a plurality of sub box bodies which are not communicated with each other, and each sub box body is correspondingly provided with the water draining pipe and the slurry outlet pipe; the slurry passes through the upper dewatering net and the lower dewatering net, enters the sub-box body, is dewatered by a slurry collecting method, flows out of the slurry outlet pipe, and water flows out of the water outlet pipe.
Preferably, the pulp outlet joints are two groups, and the pulp outlet joints of different groups have height differences; the upper tank body is movably provided with a top cover, and the top cover is connected with an adjusting valve. The two groups of slurry outlet joints can be selectively connected with the slurry distributor pipes with different heights, so that slurry distribution pressure is balanced. The movable top cover is convenient to set up and clean and maintain the pulp distribution tank, and the air pressure in the pulp distribution tank can be adjusted through the setting of the adjusting valve, so that the pressure requirements of different pulps are met.
Correspondingly, the two groups of pipes comprise equidistant groups and non-equidistant groups, the distance between adjacent pipes of the equidistant groups is a, the pipes of the non-equidistant groups have offset relative to the pipes of the equidistant groups, the offset at two ends of the non-equidistant groups are b1, b2 and b3 in sequence from outside to inside, the offset at the middle section of the non-equidistant groups is b0, wherein b0=1/2 a, b1 < b2 < b3 < b0.
Preferably, b1=1/12 a, b2=3/12 a, b3=5/12 a.
In addition, a high polymer plug-in unit is clamped at the inlet of the circular pipe section; the polymer plug-in is made of polyethylene material.
As an improvement, a displacement sensor is further arranged on the box body, and the displacement sensor is positioned between the rear upper lip plate and the front upper lip plate and is used for monitoring the displacement of the rear upper lip plate and the front upper lip plate; and the box body is also provided with a pressure sensor for monitoring the slurry pressure in the box body.
As an improvement, the dewatering box further comprises a control valve and a flowmeter, wherein the control valve is communicated with each pulp outlet pipe, and the flowmeter is arranged on each pulp outlet pipe; the control valve and the flowmeter cooperate to form an automated configuration system.
Preferably, the drain pipe is arranged on the side wall of the sub-tank body, and the slurry outlet pipe is arranged at the bottom of the sub-tank body; the upper dewatering net is made of polyethylene materials.
Preferably, the hole plate comprises a circular plate body, a plurality of stepped holes are formed in the circular plate body, the stepped holes are divided into a plurality of groups, the stepped holes in the same group are distributed radially along the circular plate body, the stepped holes in the same group are uniformly distributed along the circumferential direction of the circular plate body, and the distances c between the stepped holes in adjacent groups are the same; the stepped hole comprises a first stepped hole and a second stepped hole, and a chamfer section is arranged between the first stepped hole and the second stepped hole.
Furthermore, limit holes are uniformly distributed at the edge of the circular plate body, and threaded holes are also formed at the edge of the circular plate body; the circular plate body is processed by adopting a high-density polyethylene material. The limiting holes are used for penetrating through the bolts to detachably install the circular plate body in the equal-pressure slurry distribution tank, so that the circular plate body is convenient to replace and clean at any time, and the circular plate body is more convenient to maintain; the screw hole is used for pre-fixing the circular plate body, and is convenient to install.
Compared with the prior art, the invention has the advantages that:
1. on one hand, the structural arrangement of the equal-pressure slurry distribution tank is that slurry enters the tank body, uniformly and equally disperses fiber flocculation by the triple action of a pore plate, gravity and air pressure, attenuates slurry flow pulsation, releases free gas and ensures that the slurry flow does not flow transversely, and does not influence fiber orientation; on the other hand, the outlet joints are designed to be evenly distributed circumferentially and at the same height to achieve a flow rate with the same outlet pressure, ensuring that the pulp enters the headbox evenly and that the pulp flow does not have any cross flow over the full cross width of the headbox, and does not affect the fiber orientation at all.
2. On one hand, the structural arrangement of the stainless steel pulp distributor is that the special-shaped pipe is arranged to apply the hydraulic principle to ensure that high-strength micro-turbulence is generated by energy conversion when the high-speed pulp flow is subjected to pipe cutting, so that the fiber in the pulp flow is well suspended and dispersed; on the other hand, the parameter relation of the middle section offset b0 and the interval a is set, so that the slurry can be uniformly distributed along the transverse direction, and the offset b1, b2 and b3 at the two ends are sequentially increased to compensate the gaps of the pipes at the two ends, so that even if each group of pipes can be transversely spread over the slurry distributor body, the slurry can be uniformly distributed along the transverse direction, and the slurry at the two ends is prevented from being lack. In addition, the stainless steel material has better wear resistance and can ensure the service life, so the scheme is suitable for the headbox with high speed. However, when the vehicle speed is high, a large impact force is generated on the pipe, especially on the inlet of the circular pipe section, and a large impact force acts for a long time, so that the pipe is deformed, and the whole pipe is very inconvenient to replace. Therefore, the high polymer plug-in can bear the impact force, has certain elastic deformation capability, can avoid the deformation of the pipe and ensures the service life of the pipe; when the polymer plug-in is damaged, the polymer plug-in is only required to be pulled out from the pipe and replaced with a new one, and the maintenance is very convenient.
3. The structure of the inclined wire headbox is arranged to enable the upper lip assembly to be adjusted and fine-tuned up and down greatly, and the structure of the box body is closed, so that the forming parameters are adjusted conveniently and accurately. The displacement sensor can monitor the up-down adjustment quantity of the upper lip assembly and feed back displacement information, so that the first cylinder, the first turbine box, the second cylinder and the second turbine box can be automatically adjusted, and the opening of the flow channel in the box body is automatically protected. The arrangement of the pressure sensor can monitor the pressure of slurry in the box body, and meanwhile, pressure information is fed back, so that the first air cylinder, the first turbine box, the second air cylinder and the second turbine box can be automatically adjusted, the size of the opening of the flow channel is automatically adjusted, and the overvoltage protection function is achieved.
4. The structural arrangement of the dewatering box has the following advantages: (1) The lower dewatering net and the upper dewatering net are arranged in a double-layer manner, so that the dewatering is more uniform, and the paper uniformity is better; the arrangement of the diagonal flow section enables the slurry to stably enter the upper dewatering tank, reduces the impact of the slurry on the upper dewatering screen, and reduces the possibility of deformation of the slurry; the direct current section width is not smaller than the lower dewatering trough width, so that the impact of multiple lower dewatering nets of slurry can be reduced, and the lower dewatering nets basically do not need to be replaced; in addition, the upper dewatering net is made of polyethylene material, so that the upper dewatering net has certain elastic deformation, the deformation of the upper dewatering net which is not reversed is avoided, and meanwhile, the cost of the polyethylene material is low, and the manufacturing is convenient. (2) By adopting an automatic configuration system for controlling the valve and the flowmeter, the dehydration control can realize the balance of the pulp web speed in the whole forming process, and the anisotropy of the forming paper industry is effectively controlled. (3) The final water content of the slurry reaches 24-28% after passing through a slurry collecting method dehydration system, so that the requirements of plate making are met, the conversion of different paper types can be adapted, and the uniformity of paper is improved. (4) Due to the independent arrangement of the sub-box body, the flow rate can be automatically controlled and the dehydration of the drain pipe can be independently controlled according to the measurement and control of the flowmeter, so that the paper forming and uniformity can be adjusted.
5. The radiation and equidistant distribution of the stepped holes of the pore plate lead the slurry to be distributed more uniformly, and the pulse eliminating effect of the slurry is improved; the arrangement of the chamfer section can reduce the impact of slurry on the pore plate, so that the slurry can smoothly enter the second stepped hole from the first stepped hole, the pore plate is not easy to deform too much, and the service life of the pore plate is prolonged; the choice of the polymer material enables the pore plate to have the advantages of toughness, light weight, easy cleaning, good replacement and wear resistance and long service life.
Drawings
FIG. 1 is a schematic diagram of a structure according to a preferred embodiment of the present invention;
fig. 2 is a front view of an intermediate pressure distribution tank according to a preferred embodiment of the present invention;
FIG. 3 is a top view of a pressurized slurry tank in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a stainless steel slurry distributor according to a preferred embodiment of the present invention;
FIG. 5 is a cross-sectional view of a stainless steel slurry distributor along the diameter of a pipe in accordance with a preferred embodiment of the present invention;
FIG. 6 is a schematic perspective view of a profiled tube section in accordance with a preferred embodiment of the invention;
FIG. 7 is a half cross-sectional view of a profiled tube section in accordance with a preferred embodiment of the invention;
FIG. 8 is a schematic view of a stainless steel slurry distributor according to a preferred embodiment of the present invention after installation of a polymer insert;
FIG. 9 is a schematic view of a polymer insert according to a preferred embodiment of the present invention;
FIG. 10 is a schematic view of the structure of a headbox according to a preferred embodiment of the invention;
FIG. 11 is a cross-sectional view of a dewatering box in accordance with a preferred embodiment of the present invention;
FIG. 12 is a side view of a dewatering box in accordance with a preferred embodiment of the present invention;
FIG. 13 is an enlarged view of FIG. 11 at A in accordance with a preferred embodiment of the present invention;
FIG. 14 is a schematic view of the structure of an orifice plate in accordance with a preferred embodiment of the present invention;
FIG. 15 is a cross-sectional view of an orifice plate along the diameter of a stepped bore in accordance with a preferred embodiment of the present invention;
fig. 16 is an enlarged view at B in fig. 15 according to a preferred embodiment of the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 16, one embodiment of the present invention includes an equal pressure headbox 100, a stainless steel headbox 200, a headbox 300, a dewatering box 400, a breast roll 500, and a forming wire 600. The method comprises the following steps:
the equal-pressure slurry distribution tank 100 comprises an upper tank body 101, a lower tank body 102, supporting legs 103 and a pore plate 104, wherein the pore plate 104 is arranged between the upper tank body 101 and the lower tank body 102, the supporting legs 103 support the upper tank body 101 and the lower tank body 102, a slurry inlet 105 is formed in the lower end of the lower tank body 102, a plurality of slurry outlet connectors 106 are connected to the side wall of the upper tank body 101, the upper tank body 101 is a cylindrical tank body, the slurry outlet connectors 106 are at least one group, and the slurry outlet connectors 106 in the same group are uniformly distributed along the circumferential direction of the upper tank body 101 and are at the same height. In this embodiment, the grout outlet joints 106 are two groups, and there is a height difference between the grout outlet joints 106 of different groups. Specifically, there are 18 grout outlet joints 106 in each set, and two sets of grout outlet joints are alternately arranged. In addition, the upper tank body 101 is movably provided with a top cover 107, which is convenient for cleaning and maintenance. The top cover 107 is connected with an adjusting valve 108 for adjusting the internal air pressure.
The hole plate 104 comprises a circular plate body 141, a plurality of stepped holes 142 are formed in the circular plate body 141, the stepped holes 142 are divided into a plurality of groups, the stepped holes 142 in the same group are distributed radially along the circular plate body 141, the stepped holes 142 in the same group are uniformly distributed along the circumferential direction of the circular plate body 141, and the distances c between the stepped holes 142 in adjacent groups are the same; the stepped bore 142 includes a first stepped bore 1421 and a second stepped bore 1422 with a chamfer segment 1423 disposed between the first stepped bore 1421 and the second stepped bore 1422. In addition, limiting holes 1411 are uniformly distributed at the edge of the circular plate 141, and threaded holes 1412 are further formed at the edge of the circular plate 141. The circular plate body 141 in this embodiment is processed from a high density polyethylene material.
The stainless steel slurry distributor 200 comprises a slurry distributor body 201, a plurality of stainless steel pipes 202 are distributed on the slurry distributor body 201, each pipe 201 comprises a circular pipe section 21 and a special-shaped pipe section 22, each circular pipe section 21 is an inlet, each special-shaped pipe section 22 is an outlet, each special-shaped pipe section 22 comprises a connecting section 221, a transition section 222 and a square hole section 223, each connecting section 221 is sleeved on each circular pipe section 21, the inner diameter of each connecting section 221 is equal to the outer diameter of each circular pipe section 21, the inner hole side length of each square hole section 223 is equal to the inner diameter of each connecting section 221, and each transition section 222 is connected with each connecting section 221 and each square hole section 223, so that a round hole is naturally transited to a square hole. Wherein the tubes 202 are two groups, including an equidistant group 202a and a non-equidistant group 202b, the distance between adjacent tubes 202 of the equidistant group 202a is a, the tubes 202 of the non-equidistant group 202b have offset relative to the tubes 202 of the equidistant group 202a, the offset at two ends of the non-equidistant group 202b are b1, b2 and b3 sequentially from outside to inside, and the offset at the middle section of the non-equidistant group 202b is b0, wherein b0=1/2 a, b1 < b2 < b3 < b0. Specifically, b1=1/12 a, b2=3/12 a, b3=5/12 a. In this example a=30 mm, b0=15 mm, b1=2.5 mm, b2=7.5 mm, b3=12.5 mm. In addition, a polymer insert 203 is clamped at the inlet of the circular pipe section 21. The polymer insert 203 is made of polyethylene material.
The inclined wire headbox 300 comprises a box 301, wherein an upper lip assembly 302 is movably arranged in the box 301, the box 301 is of a closed structure, the upper lip assembly 302 comprises a rear upper lip 321 and a front upper lip 322, the rear upper lip 321 and the front upper lip 322 are rotationally connected, a plurality of cross beams 303 are fixedly arranged on the box 301, a first air cylinder 304, a first air cylinder 305, a second air cylinder 306 and a second air cylinder 307 are fixedly arranged on the cross beams 303, the first air cylinder 304 is provided with a first air cylinder rod 341, the first air cylinder 305 is provided with a first turbine rod 351, the second air cylinder 306 is provided with a second air cylinder rod 361, the second air cylinder 307 is provided with a second turbine rod 371, the front end of the first air cylinder rod 341 is rotationally connected with the rear end of the rear upper lip 321, the front end of the first turbine rod 351 is rotationally connected with the rear end of the front upper lip 322, the front end of the second air cylinder rod 361 is rotationally connected with the middle section of the front upper lip 322, and the front end of the second turbine rod 371 is rotationally connected with the front end of the front upper lip 322; the first cylinder rod 341 and the second cylinder rod 361 are extended and contracted for the upper lip assembly 302 to perform up-down large-scale adjustment, and the first turbine rod 51 and the second turbine rod 71 are extended and contracted for the upper lip assembly 302 to perform up-down fine adjustment. In addition, a displacement sensor 308 is further disposed on the case 301, and the displacement sensor 308 is located between the rear upper lip 321 and the front upper lip 322, for monitoring the displacement of the rear upper lip 321 and the front upper lip 322. The tank 301 is also provided with a pressure sensor 309 for monitoring the slurry pressure in the tank 301.
Dewatering box 400 includes dewatering box body 401, lower dewatering screen 402, upper dewatering screen 403, drain pipe 404, slurry outlet pipe 405, control valve 407, and flow meter 406. Specifically, the lower dewatering screen 402 is disposed above the dewatering tank 401, the upper dewatering screen 403 covers the lower dewatering screen 402, the lower dewatering screen 402 is provided with a lower dewatering tank 421, the upper dewatering screen 403 is provided with an upper dewatering tank 431, the lower dewatering tank 421 and the upper dewatering tank 431 are correspondingly communicated, the upper dewatering tank 431 comprises an inclined flow section 431a and a direct flow section 431b, the opening of the inclined flow section 431a is small, the direct flow section 431b is communicated with the outlet of the inclined flow section 431a, and the width of the lower dewatering tank 421 is not greater than the width of the direct flow section 431 b; the dewatering box 401 comprises a plurality of sub-boxes 411, the sub-boxes 411 are not communicated with each other, and each sub-box 411 is correspondingly provided with a drain pipe 404 and a slurry outlet pipe 405; the slurry passes through the upper dewatering net 403 and the lower dewatering net 402, enters the sub-box 411, is dewatered by a slurry collecting method, flows out of the slurry outlet pipe 405, and water flows out of the water outlet pipe 404; the control valve 407 is communicated with each pulp outlet pipe 405, and the flowmeter 406 is arranged on each pulp outlet pipe 405; the control valve 407 and the flow meter 406 cooperate to form an automated configuration system. Wherein, drain pipe 404 sets up in sub-box 11 lateral wall, and play thick liquid pipe 5 sets up in sub-box 11 bottom. In this embodiment, the upper dewatering screen 403 is made of polyethylene material.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an inclined wire papermaking equipment, includes that the cloth thick liquid jar of isostatic pressing, stainless steel cloth thick liquid ware, inclined wire flow box, dewatering box, breast roll and forming wire, its characterized in that:
the isobaric pulp distribution tank comprises an upper tank body, a lower tank body, supporting legs and a pore plate, wherein the pore plate is arranged between the upper tank body and the lower tank body, the supporting legs support the upper tank body and the lower tank body, the lower end of the lower tank body is provided with a pulp inlet, the side wall of the upper tank body is connected with a plurality of pulp outlet connectors, the upper tank body is a cylindrical tank body, at least one group of pulp outlet connectors are arranged, and the pulp outlet connectors in the same group are uniformly distributed along the circumferential direction of the upper tank body and are at the same height;
the stainless steel slurry distributor comprises a slurry distributor body, wherein a plurality of stainless steel pipes are distributed on the slurry distributor body, each pipe comprises a circular pipe section and a special-shaped pipe section, each circular pipe section is an inlet, each special-shaped pipe section is an outlet, each special-shaped pipe section comprises a connecting section, a transition section and a square hole section, the connecting sections are sleeved on the circular pipe sections, the inner diameters of the connecting sections are equal to the outer diameters of the circular pipe sections, the side lengths of inner holes of the square hole sections are equal to the inner diameters of the connecting sections, and the transition sections are connected with the connecting sections and the square hole sections so that round holes naturally transition to square holes;
the inclined wire headbox comprises a box body, an upper lip assembly is movably arranged in the box body, the box body is of a closed structure, the upper lip assembly comprises a rear upper lip plate and a front upper lip plate, the rear upper lip plate is rotationally connected with the front upper lip plate, a plurality of cross beams are fixedly arranged on the box body, a first air cylinder, a second air cylinder and a second air cylinder are fixedly arranged on the cross beams, the first air cylinder is provided with a first air cylinder rod, the first air cylinder is provided with a first turbine rod, the second air cylinder is provided with a second air cylinder rod, the second air cylinder is provided with a second turbine rod, the front end of the first air cylinder rod is rotationally connected with the rear end of the rear upper lip plate, the front end of the first turbine rod is rotationally connected with the middle section of the front upper lip plate, and the front end of the second air cylinder rod is rotationally connected with the front upper lip plate; the first air cylinder rod and the second air cylinder rod are telescopic and used for adjusting the upper lip assembly to a large extent up and down, and the first turbine rod and the second turbine rod are telescopic and used for fine adjustment up and down of the upper lip assembly;
the dewatering box comprises a dewatering box body, a lower dewatering net, an upper dewatering net, a drain pipe and a slurry outlet pipe; the upper dewatering net is arranged above the dewatering box body, the upper dewatering net is covered on the lower dewatering net, a lower dewatering tank is arranged on the lower dewatering net, an upper dewatering tank is arranged on the upper dewatering net, the lower dewatering tank and the upper dewatering tank are correspondingly communicated, the upper dewatering tank comprises an inclined flow section and a direct current section, the opening of the inclined flow section is small in size, the direct current section is communicated with the outlet of the inclined flow section, and the width of the lower dewatering tank is not larger than that of the direct current section; the dewatering box body comprises a plurality of sub box bodies which are not communicated with each other, and each sub box body is correspondingly provided with the water draining pipe and the slurry outlet pipe; the slurry passes through the upper dewatering net and the lower dewatering net, enters the sub-box body, is dewatered by a slurry collecting method, flows out of the slurry outlet pipe, and flows out of the water outlet pipe;
the box body is also provided with a displacement sensor, and the displacement sensor is positioned between the rear upper lip plate and the front upper lip plate and is used for monitoring the displacement of the rear upper lip plate and the front upper lip plate; the box body is also provided with a pressure sensor for monitoring the slurry pressure in the box body;
the dewatering box further comprises a control valve and a flowmeter, wherein the control valve is communicated with each pulp outlet pipe, and the flowmeter is arranged on each pulp outlet pipe; the control valve and the flowmeter cooperate to form an automated configuration system.
2. An inclined wire papermaking apparatus according to claim 1, wherein: the pulp outlet joints are two groups, and the pulp outlet joints of different groups have height differences; the upper tank body is movably provided with a top cover, and the top cover is connected with an adjusting valve.
3. An inclined wire papermaking apparatus according to claim 2, wherein: the two groups of pipes comprise equidistant groups and non-equidistant groups, the distance between adjacent pipes of the equidistant groups is a, the pipes of the non-equidistant groups have offset relative to the pipes of the equidistant groups, the offset at the two ends of the non-equidistant groups are b1, b2 and b3 from outside to inside in sequence, the offset at the middle section of the non-equidistant groups is b0, wherein b0=1/2 a, b1 is smaller than b2 and b3 is smaller than b0.
4. A wire paper machine according to claim 3, characterized in that: b1 =1/12 a, b2=3/12 a, b3=5/12 a.
5. An inclined wire papermaking apparatus according to claim 4, wherein: a high polymer plug-in unit is clamped at the inlet of the circular pipe section; the polymer plug-in is made of polyethylene material.
6. An inclined wire papermaking apparatus according to claim 1, wherein: the drain pipe is arranged on the side wall of the sub-box body, and the pulp outlet pipe is arranged at the bottom of the sub-box body; the upper dewatering net is made of polyethylene materials.
7. An inclined wire papermaking apparatus according to claim 1, wherein: the pore plate comprises a circular plate body, a plurality of stepped holes are formed in the circular plate body, the stepped holes are divided into a plurality of groups, the stepped holes in the same group are distributed radially along the circular plate body in a radiation mode, the stepped holes in the same group are uniformly distributed along the circumferential direction of the circular plate body, and the distances c between the stepped holes in adjacent groups are the same; the stepped hole comprises a first stepped hole and a second stepped hole, and a chamfer section is arranged between the first stepped hole and the second stepped hole.
8. An inclined wire papermaking apparatus according to claim 7, wherein: limiting holes are uniformly distributed at the edge of the circular plate body, and threaded holes are also formed at the edge of the circular plate body; the circular plate body is processed by adopting a high-density polyethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710831442.4A CN107385987B (en) | 2017-09-15 | 2017-09-15 | Inclined wire papermaking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710831442.4A CN107385987B (en) | 2017-09-15 | 2017-09-15 | Inclined wire papermaking equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107385987A CN107385987A (en) | 2017-11-24 |
| CN107385987B true CN107385987B (en) | 2023-08-04 |
Family
ID=60351085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710831442.4A Active CN107385987B (en) | 2017-09-15 | 2017-09-15 | Inclined wire papermaking equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107385987B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012241A (en) * | 2022-07-25 | 2022-09-06 | 江南大学 | An oblique screen paper machine streaming system with ultrasonic equipment |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859144A (en) * | 1956-04-17 | 1961-01-18 | Kimberly Clark Co | Flow control apparatus of paper-making machines |
| GB927934A (en) * | 1958-07-03 | 1963-06-06 | Black Clawson Co | Improvements in or relating to paper-making machines |
| EA199900233A1 (en) * | 1996-09-06 | 1999-08-26 | Смерфит, Картон Уай Пейпел Де Мексико, С.А. Де Си.В. | INCLINED FLAT-GRAP FORMING DEVICE UNDER SUCCON TRANSPORT FOR MAKING MULTILAYER OR SINGLE-WALL PAPER |
| CN2698833Y (en) * | 2004-05-21 | 2005-05-11 | 杭州美辰纸业技术有限公司 | Hydraulic head box |
| CN2923791Y (en) * | 2006-04-27 | 2007-07-18 | 上海轻良实业有限公司 | Pulp-flowing box of inclined-net paper machine wet part |
| CN102154893A (en) * | 2011-03-04 | 2011-08-17 | 华南理工大学 | Hydrodynamic inclined-wire stock discharge box |
| CN202030981U (en) * | 2011-03-16 | 2011-11-09 | 西安维亚造纸机械有限公司 | Turbulence generator |
| CN202809373U (en) * | 2012-09-01 | 2013-03-20 | 潍坊凯信机械有限公司 | Hydraulic headbox of high-speed toilet paper machine |
| CN103276619A (en) * | 2013-05-29 | 2013-09-04 | 轻工业杭州机电设计研究院 | Slope screen former structure |
| CN203284678U (en) * | 2013-05-29 | 2013-11-13 | 轻工业杭州机电设计研究院 | Inclined net former structure |
| CN203821161U (en) * | 2014-04-21 | 2014-09-10 | 枣庄市亿利达造纸机械有限公司 | Fully-closed type oblique net molding device |
| CN205313912U (en) * | 2016-01-19 | 2016-06-15 | 枣庄市洁宇环保设备有限公司 | Full STREAMING for head box cloth starch ware |
| EP3118361A1 (en) * | 2015-07-14 | 2017-01-18 | Trützschler GmbH & Co. KG | Installation and method for making a multi-layer nonwoven fabric from at least one loose fibre web |
| CN207176382U (en) * | 2017-09-15 | 2018-04-03 | 宁波华辰机械有限公司 | A kind of inclined wire paper making equipment |
-
2017
- 2017-09-15 CN CN201710831442.4A patent/CN107385987B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB859144A (en) * | 1956-04-17 | 1961-01-18 | Kimberly Clark Co | Flow control apparatus of paper-making machines |
| GB927934A (en) * | 1958-07-03 | 1963-06-06 | Black Clawson Co | Improvements in or relating to paper-making machines |
| EA199900233A1 (en) * | 1996-09-06 | 1999-08-26 | Смерфит, Картон Уай Пейпел Де Мексико, С.А. Де Си.В. | INCLINED FLAT-GRAP FORMING DEVICE UNDER SUCCON TRANSPORT FOR MAKING MULTILAYER OR SINGLE-WALL PAPER |
| CN2698833Y (en) * | 2004-05-21 | 2005-05-11 | 杭州美辰纸业技术有限公司 | Hydraulic head box |
| CN2923791Y (en) * | 2006-04-27 | 2007-07-18 | 上海轻良实业有限公司 | Pulp-flowing box of inclined-net paper machine wet part |
| CN102154893A (en) * | 2011-03-04 | 2011-08-17 | 华南理工大学 | Hydrodynamic inclined-wire stock discharge box |
| CN202030981U (en) * | 2011-03-16 | 2011-11-09 | 西安维亚造纸机械有限公司 | Turbulence generator |
| CN202809373U (en) * | 2012-09-01 | 2013-03-20 | 潍坊凯信机械有限公司 | Hydraulic headbox of high-speed toilet paper machine |
| CN103276619A (en) * | 2013-05-29 | 2013-09-04 | 轻工业杭州机电设计研究院 | Slope screen former structure |
| CN203284678U (en) * | 2013-05-29 | 2013-11-13 | 轻工业杭州机电设计研究院 | Inclined net former structure |
| CN203821161U (en) * | 2014-04-21 | 2014-09-10 | 枣庄市亿利达造纸机械有限公司 | Fully-closed type oblique net molding device |
| EP3118361A1 (en) * | 2015-07-14 | 2017-01-18 | Trützschler GmbH & Co. KG | Installation and method for making a multi-layer nonwoven fabric from at least one loose fibre web |
| CN205313912U (en) * | 2016-01-19 | 2016-06-15 | 枣庄市洁宇环保设备有限公司 | Full STREAMING for head box cloth starch ware |
| CN207176382U (en) * | 2017-09-15 | 2018-04-03 | 宁波华辰机械有限公司 | A kind of inclined wire paper making equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107385987A (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203795228U (en) | Fiber screening device for paper making | |
| US5958189A (en) | Wet part of a paper making machine | |
| CN107385987B (en) | Inclined wire papermaking equipment | |
| CN117867883B (en) | Wet forming device for fiber material web | |
| CN207176382U (en) | A kind of inclined wire paper making equipment | |
| CN108457116B (en) | Open type single-net double-flow slurry inclined net former | |
| CN103422384B (en) | Hydraulic power experimental flow box capable of being used for flow field measurement and visualization research | |
| CN101565911A (en) | Method and device for adjusting ration of paper banners by leading out stock flow and adding dilution water | |
| CN203715990U (en) | Pulp flowing device used for paper manufacturing machine | |
| US3563852A (en) | Headbox for twin wire paper making apparatus | |
| CN202337913U (en) | Tapered diffuser headbox of paper machine | |
| CN205313912U (en) | Full STREAMING for head box cloth starch ware | |
| US3407114A (en) | Cross machine control in papermaking | |
| CN210104438U (en) | Papermaking sizing system | |
| CN216074518U (en) | Culture paper head box device | |
| CN203569379U (en) | High-efficiency white water tray blowdown device | |
| CN112411241B (en) | Fiber grading method and grading type pulp distribution device | |
| CN211293760U (en) | Sizing flow control device of paper machine | |
| CN203429501U (en) | Hydraulic experimental headbox capable of carrying out measurement and visualized research of flow field | |
| CN223963740U (en) | Paper machine wire section vacuum dewatering system | |
| CN212925598U (en) | Pulp flow box fiber blending device for papermaking production | |
| CN110777554B (en) | Banner quantitative adjusting method based on suction box and inclined net former | |
| FI125950B (en) | Multilayer Outlet Box | |
| CN206562542U (en) | It is a kind of to improve the device of l Water Paper two edge formings of page | |
| CN108589384B (en) | A novel low-speed water conservancy formula head box for long fiber papermaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |