CN106758471B - A kind of device and method for changing dilution water concentration adjusting paper cross direction ration - Google Patents
A kind of device and method for changing dilution water concentration adjusting paper cross direction ration Download PDFInfo
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- CN106758471B CN106758471B CN201710070995.2A CN201710070995A CN106758471B CN 106758471 B CN106758471 B CN 106758471B CN 201710070995 A CN201710070995 A CN 201710070995A CN 106758471 B CN106758471 B CN 106758471B
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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
- D21F1/08—Regulating consistency
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Abstract
The present invention discloses a kind of device and method for changing dilution water concentration adjusting paper cross direction ration, its device includes the level-one regulating system and two level regulating system being connected, the outside of head box is equipped with the first dilution water module, and the second dilution water module is equipped between balance cylinder and turbulent flow generator in head box；In level-one regulating system, the first dilution supply mains is connected by the first dilution water branch pipe with the first dilution water module, and the second dilution supply mains is arranged on the side of the first dilution water module；In two level regulating system, the second dilution supply mains is connected by each second dilution water branch pipe with the second dilution water module.Its method is that first the dilution water concentration in the second dilution supply mains is adjusted using level-one regulating system, recycles the dilution water that over-richness has been adjusted that the slurry concentration in head box is adjusted.The present invention can be effectively prevented from that each stock slurry stream concentration for restraining out due to cloth slurry is inconsistent and influence of the mixing to dilution water regulating effect in head box balance cylinder.
Description
Technical field
It is more particularly to a kind of to change dilution water concentration adjusting paper cross direction ration the present invention relates to pulp and paper technology field
Device and method.
Background technology
With the development and the improvement of people's living standards of society, market is proposed for the cross direction ration level distribution of paper
Increasingly higher demands.Compared with the cross direction ration adjusting method of conventional headbox, dense control full width is starched by local modulation
Quantitative method has that the amplitude of adjustment quantitative accurate, high sensitivity, adjusting and the quantitative deviation of correction is big, it is complete effectively to adjust
The uniformity of width horizontal quantification, and the advantages that full width fiber alignment uniformity can be kept, thus obtained in the whole world non-
Often it is widely applied.
Local modulation starches the quantitative operation principle of dense control full width：Appropriate spacing distance is laterally selected along head box,
Dilution water is injected into head box, is usually mthod of white water from paper making, to local modulation slurry concentration, realizes that profile basis weight is uniform
Adjust.
According to above-mentioned principle, people devise a variety of different dilution water adding methods and device, are mainly the following：
In U.S. patent documents US005843281, disclose the dilution water come from dilution supply mains and pass through dilution water branch pipe
Into in the cloth slurry tube bank after square Taper Pipe, dilution water branch pipe is installed between cloth slurry tube bank, and dilution water is controlled by regulating valve
Flow adjusts cross direction ration.
In U.S. patent documents US005196091A, the upstream end for disclosing more dilution water pipes with cloth slurry tube bank is connected,
Dilution water is entered in tube bank by diluting water pipe, and the flow of dilution water is controlled by diluting water valve, so as to control into paper
Cross direction ration is distributed.
In U.S. patent documents US005800678A, dilution supply mains is disclosed with being arranged above and below into slurry manifold, centre is logical
A wall is crossed to separate.Enter from the dilution water that dilution supply mains comes by regulating valve and branch pipe in each pipe of cloth slurry tube bank, no
The dilution water of same amount mixes in tube bank with main slurry stream, so as to adjust paper by varying the flow of dilution water and the concentration of slurry
The cross direction ration opened.
In U.S. patent documents US006136152A, disclose dilution water and add into connection interbank with cloth slurry slurry manifold
In block, dilution water is injected into the main slurry stream of cloth slurry tube bank entrance at an angle with main slurry stream, and dilution water flow is with less than 180 °
Steering be mixed into main slurry stream in cloth slurry tube bank, uniform quantitative distribution is obtained by adjusting the flow of dilution water.
Obviously, by above-mentioned disclosed each scheme as it can be seen that existing dilution water adding method mostly injects dilution water
In cloth slurry tube bank or cloth slurry tube bank inlet, control cross direction ration by varying the flow of dilution water.These methods are abundant
The mechanism of the uniform cloth slurries of taper manifold is make use of, reduces the changes in flow rate of every cloth slurry branch pipe after addition dilution water, but in reality
In production application, problems with is still suffered from：
One, be not completely equivalent due to the dilution water added in every tubulation, after cloth outputting slurry branch pipe, due to edge
Laterally slurry flow is not completely equivalent head box, so as to more or less there is crossing current.
Secondly, head box usually cloth starch tube bank lip area between have an intermediate equilibria room and turbulent flow generator,
Dilution water is mixed with main slurry stream in cloth starches branch pipe, but the shallow bid for restraining out from cloth slurry starches stream, unavoidably will between each other
Part is produced to mix, meanwhile, resistance caused by the turbulent flow generator of balance cylinder exit can also promote to starch the mixed of stream in balance cylinder
Close, so as to influence the regulating effect of dilution water.That is, the optimal place that adds of dilution water is not in cloth slurry tube bank
Upstream, and should be proximate in the turbulent flow generator of lip.
Thirdly, dilution water branch pipe be installed on cloth slurry branch pipe between, then size, quantity and the installation site of dilution water branch pipe
All limited be subject to cloth slurry branch tube spacing, this aspect have impact on the performance of dilution water regulating effect；On the other hand, dilution water branch
Pipe must starch every pipe in pipe with each column cloth again and be connected, this undoubtedly adds the difficulty of processing and manufacturing again.
The content of the invention
Change dilution water concentration it is an object of the invention to overcome the deficiencies of the prior art and provide one kind and adjust paper banner
Quantitative device, the device do not change the flow of dilution water, and realizes paper cross direction ration by varying the concentration of dilution water
Adjusting, each stock slurry stream concentration that can be effectively prevented from restraining out due to cloth slurry is inconsistent and mixed in head box balance cylinder
Influence to dilution water regulating effect.
Another object of the present invention is to provide a kind of change realized by above device to dilute water concentration adjusting paper
The method of cross direction ration.
The technical scheme is that：A kind of device for changing dilution water concentration adjusting paper cross direction ration, including be connected
The level-one regulating system and two level regulating system connect, the outside of head box are equipped with the first dilution water module, balance cylinder in head box
The second dilution water module is equipped between turbulent flow generator, the port of export of two level regulating system is connected with turbulent flow generator；One
It is total that level regulating system includes the first dilution supply mains, multiple first dilution water branch pipes, the first dilution water module and the second dilution water
Pipe, the first dilution supply mains are connected by multiple first dilution water branch pipes in parallel with the first dilution water module, the second dilution water
Manifold is arranged on the side of the first dilution water module；Two level regulating system includes multiple second dilution water branch pipes for being arranged in parallel and the
Two dilution water modules, the second dilution supply mains are connected by each second dilution water branch pipe with the second dilution water module.
Each first dilution water branch pipe is equipped with diluting water regulating valve, can be with separately adjustable each first dilution water branch pipe
On flow, so as to fulfill in each dilution unit in the second dilution water module high concentration diluting water carry out it is separately adjustable.
Each diluting water regulating valve can use linear V-type ball valve, on corresponding dilution water branch pipe, and be connected with stepper motor, use
To adjust low concentration dilution water flow, stepper motor can be by the control system of paper machine, according to the measure of paper cross direction ration
As a result, the aperture of diluting water regulating valve is controlled by computer.And diluting water regulating valve is not provided with the second dilution water branch pipe, it is right
Second dilution water branch pipe is without flow control, to ensure the dilution water flow adjusted through over-richness into the second dilution water module
Measure equal.
In the first dilution water module, the slurry stream direction in water (flow) direction and head box from the second dilution supply mains
Parallel, the water (flow) direction of the second dilution water branch pipe of inflow is also parallel with the slurry direction in head box, from the first dilution
Angle is formed between slurry stream direction in the water (flow) direction and head box of water branch pipe；It is dilute from second in second dilution water module
Release and form angle between the slurry stream direction in the water (flow) direction and head box of water branch pipe.That is, the first dilution water branch pipe can
It is dilute that top surface or bottom surface perpendicular to the first dilution water module, the second dilution supply mains and the second dilution water branch pipe are respectively arranged on first
Release the both sides of water module, top surface or bottom surface of the second dilution water branch pipe perpendicular to the second dilution water module.
Dilution water in the first dilution supply mains is clear water or the plain boiled water of clarification；Dilution in second dilution supply mains
Water is enriched water, and the concentration of enriched water is 0.05%~0.2%.
The thinner ratio scope of the level-one regulating system is 10%-30%, and the thinner ratio scope of two level regulating system is
10%-15%.
The structure of the first dilution water module is identical with the structure of the second dilution water module, by multiple dilution unit edges
The cross-sectional direction of head box rearranges；Each dilution unit include it is sequentially connected into slurry section, mixing section and pulp section, into slurry
Duan Shangfang is equipped with dilution water inlet.Wherein, it is rectangle into the lateral cross section of slurry section, longitudinal cross-section is trapezoidal, the knot of pulp section
Structure and size are identical (i.e. into the diffusion type structure for starching section and pulp section is symmetrical configuration) with into slurry section, both are symmetrically set in mixing
The both ends of section, the exit width of entrance width and pulp section into slurry section depend on the columns of institute's control bundle, can wait
It is equal with the inlet height of turbulent flow generator in the width of one or more columns per page turbulent flow tube bank, its height.The cross sectional shape of mixing section
For circular, square or polygon, when for circle when, its a diameter of 15~25mm, when for it is square when, its length of side is 15~25mm.
The entire length of dilution unit is 100~200mm, wherein the length into slurry section, mixing section and pulp section respectively accounts for 1/3 or so.
In the first dilution water module, it is connected into slurry section with the second dilution supply mains, dilutes water inlet and the first dilution
Water branch pipe connects, and pulp section is connected with the second dilution water branch pipe；In second dilution water module, it is connected into slurry section with balance cylinder, it is dilute
Release water inlet to be connected with the second dilution water branch pipe, pulp section is connected with turbulent flow generator.
Into 80 ° of angles between the center line into slurry section and the center line for diluting water inlet.That is slurry stream direction and dilution
The angle formed between the water (flow) direction of water is preferably 80 °.According to the needs of actual conditions, which can take between 0-90 °
Value.
In above device structure, head box is mainly by into slurry manifold, pulp distributor, balance cylinder, turbulent flow generator and lip area
Composition is sequentially connected, the device of this change dilution water concentration adjusting paper cross direction ration is arranged on above or below head box, its
In the second dilution water module be arranged on the junction of balance cylinder and turbulent flow generator.Wherein, the first dilution supply mains is general for market
Conical pipe or round tube, second dilution supply mains be conical pipe, by Bai Nasi equations design, with reflux, the second dilution water
Manifold carries inlet control valve and return valve, so as to control the dilution entered by the second dilution water module in head box
The total flow of water, it is ensured that thinner ratio is balanced by the pressure for the valve regulation dilution water manifold that flows back in rational scope, so as to protect
Card by the first dilution water module enter every second dilution water branch pipe flow and pressure it is essentially equal.
The dilution water next with the second dilution supply mains from the dilution water (low concentration dilution water) that the first dilution supply mains comes is (high
Concentration dilution water) it is sufficiently mixed in the first dilution water module, the stream of each first dilution water branch pipe is adjusted by diluting water regulating valve
Amount, so that the concentration of dilution water in adjusting into head box (dilution water i.e. through over-richness adjusting), makes its concentration and flow full
After foot requires, into the second dilution water module, turbulent flow is entered after being then sufficiently mixed in the second dilution water module with slurry and is sent out
In raw device.Due to the second dilution water branch pipe be not mounted within turbulent flow tube bank between, thus the size of the second dilution water branch pipe from
Turbulent flow it is interbank away from influence, relatively large caliber can be used, avoid the materials such as fiber in dilution water from blocking dilution water
Branch pipe.Second dilution water injects in slurry stream at an angle, and is sufficiently mixed in mixing section, is then entered by pulp section each
In tubulation beam or other turbulent flow elements.In the second dilution water module, since each dilution unit structure is identical, into each dilute
It is also identical with entry angle to release dilution water flow in unit, therefore, the addition of dilution water does not influence slurry in each tubulation beam
Relative discharge, but effectively have adjusted the slurry concentration in each tubulation beam, thus reached by add dilution water adjust paper
Open the purpose of cross direction ration.
The present invention realizes a kind of method for changing dilution water concentration adjusting paper cross direction ration according to above device, first uses
The dilution water concentration in the second dilution supply mains is adjusted in level-one regulating system, recycles the dilution that over-richness is adjusted
The slurry concentration in head box is adjusted in water.
This method specifically includes following steps：
Dilution water in (1) first dilution supply mains be low concentration dilution water, passes through each first dilution water branch pipe feeding the
In one dilution water module；Dilution water in second dilution supply mains is high concentration diluting water, is sent directly into the first dilution water module
In；High concentration diluting water is mixed with low concentration dilution water in the first dilution water module, is formed through the dilute of over-richness adjusting
Water is released, is then sent into by the second dilution water branch pipe in the second dilution water module；Wherein, the is entered by each first dilution water branch pipe
The low concentration dilution water flow of one dilution water module is different；Through over-richness adjust dilution water, by each second dilution water branch pipe into
When entering the second dilution water module, flow is identical with pressure, but concentration is different；
(2) slurry in head box behind balance cylinder by being sent directly into the second dilution water module, in the second dilution water mould
In block, the dilution water adjusted through over-richness is mixed with slurry, after forming the slurry adjusted through over-richness, is sent to the turbulent flow of head box
In generator.
The device and method of above-mentioned change dilution water concentration adjusting paper cross direction ration is in use, its operation principle is：It is first
First, the control valve on the second dilution supply mains is adjusted, as requested, adjusts the total flow for entering dilution water in head box.Then
By first dilution supply mains come clear water or dilute plain boiled water using diluting water regulating valve adjusting flow after, pass through the first dilution water branch pipe
Enriched water with coming from the second dilution supply mains is sufficiently mixed in the first dilution water module, obtains that flow is identical but concentration is different
Dilution water after, by corresponding second dilution water branch pipe enter the second dilution water module in, with balance cylinder come slurry it is abundant
Mixing at this time, since the dilution water flow that each second dilution water branch pipe adds is essentially equal, will not change head box
The track of middle slurry stream and the flow of each branch pipe of turbulent flow generator, and since the dilution water concentration that each second dilution water branch pipe adds is
It is different, so achieve the purpose that to adjust cross direction ration by adjusting slurry concentration.
The present invention has the advantages that relative to the prior art：
The device and method of this change dilution water concentration adjusting paper cross direction ration is in use, by varying the dense of dilution water
Degree carrys out adjusting paper cross direction ration, and the flow without changing dilution water, the dilution water after over-richness is adjusted equally is injected
The turbulent flow generator upstream of head box, so that the cross direction ration of paper is adjusted by varying the concentration of slurry, while can be effective
Ground avoids each stock slurry stream influence of mixing to dilution water regulating effect in head box balance cylinder for restraining out due to cloth slurry.
In the device and method of this change dilution water concentration adjusting paper cross direction ration, dilution water adds the rapids in head box
In flow-generator, rather than in cloth slurry tube bank, mixing of the multiply tributary in head box balance cylinder is effectively prevent to dilution
The influence of water regulating effect.
In the device and method of this change dilution water concentration adjusting paper cross direction ration, add on head box banner each point
Dilution water flow is identical, so that it is guaranteed that not influencing the flow of each branch pipe in turbulent flow generator, avoids and is produced in lip area
Crossing current, it also avoid being mutually mixed the influence to cross direction ration regulating effect between tributary.
In the device of this change dilution water concentration adjusting paper cross direction ration, dilution water branch pipe is installed on dilution water module
Above or below, rather than between turbulent flow generator branch pipe, thus larger caliber can be chosen as needed, avoid dilution
The blocking of water branch pipe, can make dilution water using denseer plain boiled water.
The device processing and fabricating of this change dilution water concentration adjusting paper cross direction ration is simple, and equipment cost is low.Both it was adapted to
The making of new head box, and the transformation of existing head box is very suitable for, in transformation process, it need to only increase two sets of dilution waters newly and adjust system
System, is then installed on one of dilution water module between head box balance cylinder and turbulent flow generator, and without convection current
Starch box structure and carry out big transformation, its application prospect is preferable.
Brief description of the drawings
Fig. 1 is the structure diagram for the device that this change dilutes water concentration adjusting paper cross direction ration.
Fig. 2 is the Section A-A view of Fig. 1.
The structure diagram that single dilution unit is connected with turbulent flow generator in the D parts that Fig. 3 is Fig. 2.
Fig. 4 is the part-structure schematic diagram of the second dilution water module on the C directions of Fig. 2.
Fig. 5 is the structure diagram of single dilution unit.
Fig. 6 is the section B-B view of Fig. 1.
In above-mentioned each figure, component shown in each label is as follows：1 is the first dilution supply mains, and 2 be the second dilution supply mains, and 3 are
First dilution water module, 4 be diluting water regulating valve, and 5 be the first dilution water branch pipe, and 6 be the second dilution water branch pipe, and 7 is dilute for second
Water module is released, 8 be into slurry manifold, and 9 be pulp distributor, and 10 be balance cylinder, and 11 be turbulent flow generator, and 12 be lip area, and 13 be into slurry
Section, 14 be mixing section, and 15 be pulp section, and 16 be dilution water inlet, and a is angle.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
Embodiment 1
A kind of device for changing dilution water concentration adjusting paper cross direction ration of the present embodiment, as shown in Figure 1, installing and applying
In on head box, head box mainly by into slurry manifold 8, pulp distributor 9, balance cylinder 10, turbulent flow generator 11 and lip area 12 successively
Connection composition.
Changing the device of dilution water concentration adjusting paper cross direction ration includes level-one regulating system (adjusting dilution water concentration
With) and two level regulating system (adjusting slurry concentration use), level-one regulating system is mainly by the first dilution dilution of supply mains 1, second
Supply mains 2, diluting water regulating valve 4, the first dilution water branch pipe 5 and the first dilution water module 3 are formed, the dilution of first time regulating system
Than for 15%.Two level regulating system is connected with level-one regulating system, by 7 structure of the second dilution water branch pipe 6 and the second dilution water module
Into the thinner ratio of two level regulating system is 10%.
First dilution supply mains can be common conical pipe or round tube.Dilution water in first dilution supply mains can use
Clear water or the plain boiled water of clarification, use clarified white water in this example.
Second dilution supply mains is taper manifold, is designed by Bai Nasi equations, with reflux, be can guarantee that by the first dilution
Water module is essentially equal into the flow and pressure of the second dilution water branch pipe.Second dilution supply mains is with inlet control valve and returns
Valve is flowed, so as to control the flow that the dilution water in head box is entered by the second dilution water module, it is ensured that thinner ratio exists
In the range of it is required that.It is balanced that the pressure of supply mains is diluted by the valve regulation second that flows back, so as to ensure by the first dilution water mould
Flow and the pressure for entering the dilution water of every second dilution water branch pipe after block are essentially equal.Dilution in second dilution supply mains
Water uses enriched water.
The dilution water that the dilution water and the second dilution supply mains come from the first dilution supply mains comes is in the first dilution water module
In be sufficiently mixed, by diluting water regulating valve adjust the first dilution water branch pipe flow, so as to adjust into the second dilution water branch pipe
Dilution water concentration, be uniformly mixed and concentration reach the dilution water after requirement and enter the second dilution water module, second dilute
Enter after being sufficiently mixed in water module with slurry in turbulent flow generator.
First dilution water module connects with the outlet of the second dilution supply mains, and the second dilution water module is installed on head box
Between balance cylinder and turbulent flow generator；Diluting water regulating valve is installed on the first dilution water branch pipe.Wherein, diluting water regulating valve is
Linear V-type ball valve, on the first dilution water branch pipe, and is connected with stepper motor, to adjust dilution water flow；Stepping electricity
Machine, according to the measurement result of paper cross direction ration, dilution water valve can be controlled by computer by the control system of paper machine
Aperture.
On second dilution water branch pipe any control valve is not installed.
As shown in Fig. 2, the second dilution water module is made of multiple dilution units.In the tube bank of turbulent flow generator, each pipe
A diameter of Φ 18mm, the centre-to-centre spacing between two neighboring pipe are 30mm, each unit control of design requirement the second dilution water module
The slurry concentration of adjacent two tubulations beam is made, thus, the exit width of the second each unit of dilution water module is more than 48mm, it is contemplated that
Wall thickness between unit, the width of each dilution unit is 60mm, its internal height is equal to the outlet height of balance cylinder, each
The outlet of unit can completely include the import of two tubulation beams, as shown in Figure 3.It can be seen from the above that the second dilution water module of composition
Dilution unit number is the half that columns is restrained in whole turbulent flow generator.
As shown in figure 4, the first dilution water branch pipe is installed on the centre position of each dilution unit in the second dilution water module, respectively
Dilution unit width is 60mm, and the spacing of two neighboring first dilution water branch pipe is also 60mm, also can be as needed, reduces or increases
Add the spacing of the first dilution water branch pipe, the tube bank from each dilution unit of the second dilution water module to a row or more row supplies
Slurry, the slurry concentration of one or more columns per page is adjusted by a dilution unit, so as to adjust the cross direction ration of paper.
Form the structure of each dilution unit of the first dilution water module or the second dilution water module as shown in figure 5, mainly by
Formed into slurry section 13, mixing section 14, pulp section 15 and dilution water inlet 16, the oral area of its into slurry section and pulp section is rectangular
Shape.Mixing section is tubular, positioned at the centre of dilution unit, the import into slurry section by the gradual symmetric shrinkage of oral area to mixing section, so
The oral area of pulp section is gradually symmetrically extended to by the outlet of mixing section again afterwards.The angle a formed between dilution water flow and slurry stream is about
For 80 °.In second dilution water module, a diameter of Φ 20mm of mixing section, the length of mixing section is 30mm, the second dilution water module
Total length (i.e. into the sum of slurry section, length of mixing section and pulp section) be 100mm, slurry and dilution water are in the pipe of mixing section
It is sufficiently mixed, the slurry after over-richness is adjusted enters in the turbulent flow generator of head box, whitewashes finally by lip area
Online, controls the cross direction ration of paper to be distributed.The complete phase of structure snd size of second dilution water module and the first dilution water module
Together.
As shown in fig. 6, the first dilution water module is installed between the second dilution supply mains and the second dilution water branch pipe, at the same time
Connect with the first dilution water branch pipe, the first dilution water module is identical with the structure and size of the second dilution water module, each
The width of dilution unit is 60mm, its internal height is equal to the total outlet height of the first dilution water, two neighboring first dilution water
The spacing of branch pipe is also 60mm.
In above device structure, between being not mounted within the tube bank of turbulent flow generator due to the second dilution water branch pipe, thus
The size of second dilution water branch pipe from turbulent flow generator it is interbank away from influence, relatively large caliber can be used, kept away
Exempt from the materials such as the fiber in dilution water and block dilution water branch pipe.Dilution water in second dilution water branch pipe injects at an angle
In slurry stream, and it is sufficiently mixed in mixing section, each tubulation beam of turbulent flow generator or other turbulence cells is then entered by pulp section
In part.Since each dilution unit structure is identical, dilution water flow and entry angle also complete phase into each dilution unit
Together, therefore, the addition of dilution water does not influence the relative discharge of slurry in each tubulation beam, but effectively have adjusted in each tubulation beam
Slurry concentration, so as to achieve the purpose that by adding dilution water adjusting paper cross direction ration.
Above device is in use, its operation principle is：First, adjust second dilution supply mains on control valve, according to will
Ask, adjust the total flow for entering dilution water in head box.Then by first dilution supply mains come clear water or dilute plain boiled water utilize it is dilute
Release water regulating valve adjust flow after, by the first dilution water branch pipe with from second dilution supply mains come enriched water first dilute
Be sufficiently mixed in water module, after obtaining the dilution water that flow is identical but concentration is different, by corresponding second dilution water branch pipe into
Enter in the second dilution water module, with balance cylinder come slurry be sufficiently mixed at this time, due to each second dilution water branch pipe add it is dilute
It is essentially equal to release water flow, therefore will not change the flow of the track that stream is starched in head box and each branch pipe of turbulent flow generator,
Again since the dilution water concentration that each second dilution water branch pipe adds is different, so reach adjusting by adjusting slurry concentration
The purpose of cross direction ration.
Embodiment 2
The present embodiment realizes a kind of side for changing dilution water concentration adjusting paper cross direction ration by 1 described device of embodiment
Method, is first adjusted the dilution water concentration in the second dilution supply mains using level-one regulating system, recycles over-richness
The slurry concentration in head box is adjusted in the dilution water of adjusting.Specifically include following steps：
Dilution water in (1) first dilution supply mains be low concentration dilution water, passes through each first dilution water branch pipe feeding the
In one dilution water module；Dilution water in second dilution supply mains is high concentration diluting water, is sent directly into the first dilution water module
In；High concentration diluting water is mixed with low concentration dilution water in the first dilution water module, is formed through the dilute of over-richness adjusting
Water is released, is then sent into by the second dilution water branch pipe in the second dilution water module；Wherein, the is entered by each first dilution water branch pipe
The low concentration dilution water flow of one dilution water module is different；Through over-richness adjust dilution water, by each second dilution water branch pipe into
When entering the second dilution water module, flow is identical with pressure, but concentration is different；
(2) slurry in head box behind balance cylinder by being sent directly into the second dilution water module, in the second dilution water mould
In block, the dilution water adjusted through over-richness is mixed with slurry, after forming the slurry adjusted through over-richness, is sent to the turbulent flow of head box
In generator.
As described above, the present invention can be better realized, above-described embodiment is only presently preferred embodiments of the present invention, is not used
To limit the practical range of the present invention；I.e. all equivalent changes and modifications made according to present invention, all will for right of the present invention
Scope claimed is asked to be covered.
Claims (9)
1. a kind of device for changing dilution water concentration adjusting paper cross direction ration, it is characterised in that including the level-one tune being connected
Section system and two level regulating system, the outside of head box are equipped with the first dilution water module, and balance cylinder occurs with turbulent flow in head box
The second dilution water module is equipped between device, the port of export of two level regulating system is connected with turbulent flow generator；Level-one regulating system
Including the first dilution supply mains, multiple first dilution water branch pipes, the first dilution water module and the second dilution supply mains, the first dilution
Supply mains is connected by multiple first dilution water branch pipes in parallel with the first dilution water module, and the second dilution supply mains is arranged on first
The side of dilution water module；Two level regulating system includes the multiple second dilution water branch pipes and the second dilution water mould being arranged in parallel
Block, the second dilution supply mains are connected by each second dilution water branch pipe with the second dilution water module；
Each first dilution water branch pipe is equipped with diluting water regulating valve, and diluting water regulating valve is not provided with each second dilution water branch pipe；
Wherein, the dilution water in the first dilution supply mains is low concentration dilution water, and first is sent into by each first dilution water branch pipe
In dilution water module；Dilution water in second dilution supply mains is high concentration diluting water, is sent directly into the first dilution water module；
High concentration diluting water is mixed with low concentration dilution water in the first dilution water module, forms the dilution adjusted through over-richness
Water, is then sent into the second dilution water module by the second dilution water branch pipe；Wherein, first is entered by each first dilution water branch pipe
The low concentration dilution water flow of dilution water module is different；The dilution water adjusted through over-richness, is entered by each second dilution water branch pipe
During the second dilution water module, flow is identical with pressure, but concentration is different.
A kind of 2. device for changing dilution water concentration adjusting paper cross direction ration according to claim 1, it is characterised in that institute
State in the first dilution water module, the water (flow) direction from the second dilution supply mains is parallel with the slurry stream direction in head box, stream
It is also parallel with the slurry direction in head box to enter the water (flow) direction of the second dilution water branch pipe, the water from the first dilution water branch pipe
Angle is formed between slurry stream direction in stream direction and head box；In second dilution water module, from the second dilution water branch pipe
Angle is formed between slurry stream direction in water (flow) direction and head box.
A kind of 3. device for changing dilution water concentration adjusting paper cross direction ration according to claim 1, it is characterised in that institute
It is clear water or the plain boiled water of clarification to state the dilution water in the first dilution supply mains；Dilution water in second dilution supply mains is dense white
Water, the concentration of enriched water is 0.05%~0.2%.
A kind of 4. device for changing dilution water concentration adjusting paper cross direction ration according to claim 1, it is characterised in that institute
The thinner ratio scope for stating level-one regulating system is 10%-30%, and the thinner ratio scope of two level regulating system is 10%-15%.
A kind of 5. device for changing dilution water concentration adjusting paper cross direction ration according to claim 1, it is characterised in that institute
It is identical with the structure of the second dilution water module to state the structure of the first dilution water module, by horizontal stroke of multiple dilution units along head box
Cross-wise direction rearranges；Each dilution unit, into slurry section, mixing section and pulp section, is equipped with including sequentially connected into slurry section top
Dilute water inlet.
A kind of 6. device for changing dilution water concentration adjusting paper cross direction ration according to claim 5, it is characterised in that institute
To state in the first dilution water module, be connected into slurry section with the second dilution supply mains, dilution water inlet is connected with the first dilution water branch pipe,
Pulp section is connected with the second dilution water branch pipe；In second dilution water module, it is connected into slurry section with balance cylinder, dilution water inlet and the
Two dilution water branch pipes connect, and pulp section is connected with turbulent flow generator.
A kind of 7. device for changing dilution water concentration adjusting paper cross direction ration according to claim 5, it is characterised in that institute
State into slurry section center line and dilute water inlet center line between into 80 ° of angles.
8. any one of 1-7 described devices are wanted to realize a kind of side for changing dilution water concentration adjusting paper cross direction ration according to right
Method, it is characterised in that be first adjusted, recycled to the dilution water concentration in the second dilution supply mains using level-one regulating system
The slurry concentration in head box is adjusted in the dilution water that over-richness has been adjusted.
A kind of 9. method for changing dilution water concentration adjusting paper cross direction ration according to claim 8, it is characterised in that bag
Include following steps：
Dilution water in (1) first dilution supply mains is low concentration dilution water, and it is dilute to be sent into first by each first dilution water branch pipe
Release in water module；Dilution water in second dilution supply mains is high concentration diluting water, is sent directly into the first dilution water module；It is high
Concentration dilution water is mixed with low concentration dilution water in the first dilution water module, forms the dilution water adjusted through over-richness,
Then it is sent into by the second dilution water branch pipe in the second dilution water module；Wherein, it is dilute into first by each first dilution water branch pipe
The low concentration dilution water flow for releasing water module is different；The dilution water adjusted through over-richness, enters the by each second dilution water branch pipe
During two dilution water modules, flow is identical with pressure, but concentration is different；
(2) slurry in head box behind balance cylinder by being sent directly into the second dilution water module, in the second dilution water module,
The dilution water adjusted through over-richness is mixed with slurry, after forming the slurry adjusted through over-richness, is sent to the turbulent flow generation of head box
In device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710070995.2A CN106758471B (en) | 2017-02-09 | 2017-02-09 | A kind of device and method for changing dilution water concentration adjusting paper cross direction ration |
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| CN201710070995.2A CN106758471B (en) | 2017-02-09 | 2017-02-09 | A kind of device and method for changing dilution water concentration adjusting paper cross direction ration |
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| CN106758471B true CN106758471B (en) | 2018-05-15 |
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| CN108166302A (en) * | 2018-01-10 | 2018-06-15 | 浙江山鹰纸业有限公司 | A kind of head box for double net paper machines |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4211291C3 (en) * | 1992-04-03 | 2001-06-07 | Voith Gmbh J M | Mixing device and method for mixing two liquids at a constant mixture volume flow to supply the headbox of a paper machine |
| US6117272A (en) * | 1998-09-03 | 2000-09-12 | Voith Sulzer Papiermaschinen | Device and process for metering auxiliary materials into the flow box of a paper machine |
| DE19843727A1 (en) * | 1998-09-24 | 2000-03-30 | Voith Sulzer Papiertech Patent | Process and headbox system to improve the consistency cross profile of a fiber web |
| DE19843728A1 (en) * | 1998-09-24 | 2000-03-30 | Voith Sulzer Papiertech Patent | Method and device for keeping the low consistency strand of a headbox system clean |
| CN101012629B (en) * | 2006-05-31 | 2011-04-27 | 华南理工大学 | Diluting water adding device of head box |
| CN100400745C (en) * | 2006-07-07 | 2008-07-09 | 华南理工大学 | Device for roughly regulating or fine adjustment for paper banner through adding diluent water |
| CN102168390A (en) * | 2011-05-06 | 2011-08-31 | 华南理工大学 | Device for adjusting paper cross direction ration and fiber orientation |
| CN105755887B (en) * | 2016-04-29 | 2018-06-29 | 华南理工大学 | A kind of paper cross direction ration regulating device and method |
| CN206562541U (en) * | 2017-02-09 | 2017-10-17 | 华南理工大学 | A kind of device for changing dilution water concentration adjusting paper cross direction ration |
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