CN201003125Y - Head box diluting water addition device - Google Patents
Head box diluting water addition device Download PDFInfo
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- CN201003125Y CN201003125Y CNU200620059755XU CN200620059755U CN201003125Y CN 201003125 Y CN201003125 Y CN 201003125Y CN U200620059755X U CNU200620059755X U CN U200620059755XU CN 200620059755 U CN200620059755 U CN 200620059755U CN 201003125 Y CN201003125 Y CN 201003125Y
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- dilution water
- dilution
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Abstract
The utility model discloses a dilution water feeding device in stock discharge box and comprises a dilution water main pipe, a dilution water branch pipe, a dilution water adjusting valve and a dilution water module which is installed between the admission main pipe and the distribution pipe bundle. One end of the dilution water branch pipe is connected with the dilution water main pipe and the other end is connected with the water dilution module so as to make the dilution water and the grout be charged into the stock discharge box at the angel of 0 to 90 degrees to dilute the grout. The dilution water adjusting valve is driven by a step motor and can be connected with the banner ration control system of the paper machine so as to adjust the flow rate of the dilution water. The dilution water module is applied to fully mix the dilution water and the main grout and comprises a plurality of units that are horizontally arranged along the stock discharge box. The units comprise grout inlets, mixing sections, grout outlets and dilution water inlets. The utility model can prevent blocking of the dilution water branch pipe effectively, improve the effect of adjusting the banner ratio with dilution water and can achieve ideal banner ratio distribution with simple device and low cost.
Description
Technical field
The utility model relates to the pulp and paper technology field, specifically is a kind ofly to regulate the dilution water adding set that local slurry concentration is controlled the head box that the paper cross direction ration distributes by adding dilution water,
Background technology
Every paper machine can both adapt to certain quantitative scope, and when one timing of online slurry concentration, the lip aperture realizes in the head box by changing in the change of the page quantification of copying; On the other hand, even the design of head box is very rational, the phenomenon of flow velocity inequality in still can occurring whitewashing, thus causing paper horizontal quantification skewness, the page cross direction ration is uneven can to produce influence greatly to paper performance.Therefore, all head boxs all must have the perfect quantitative regulating system of a cover.
Page quantification change on a large scale is to finish by the integrally-regulated of top lip of slice, and local modulation then has different modes.Before the nineties, in all paper production of the world, regulating aspect the profile basis weight, all adopting the labial lamina of the conventional headbox control method of writing music for a song, the nineties initial stage has succeeded in developing can be by the new method of local modulation slurry concentration control profile basis weight.
Starch dense control full width quantitative methods by local modulation and have the incomparable advantage of many conventional methods, thereby obtained using very widely in the whole world.
Local modulation is starched the quantitative operation principle of dense control full width: along laterally selecting the proper spacing distance, inject dilution water to the upstream of cloth slurry unit, be generally mthod of white water from paper making, in order to the local modulation slurry concentration, realize the profile basis weight even regulation.
The slurry stream concentration and the flow that enter slurry house steward into are constant, and the slurry stream concentration and the flow that enter each cloth slurry pipe when not adding dilution water also are uniformities.When standard quantitative has quantitatively been departed from the horizontal somewhere of paper, to injecting dilution water with this upstream of locating corresponding pipe, regulate the slurry flow at this place and the ratio of plain boiled water amount, thereby promptly regulate the uniformity of the slurry concentration realization regulation and control paper profile basis weight at this place.
According to above-mentioned principle, people have designed different dilution water adding method and device, and the dilution water system of the head box of Beloit (existing Metso) company comprises parts such as dilution water house steward, arm, by-pass valve control.Dilution water injects into adjacent tube entry position, slurry house steward upstream, and dilution water enters in this pipe after changeing 180 ° of degree, enters mixing chamber after dilution water and main slurry stream mix in tube bank.Increase or minimizing dilution water flow by by-pass valve control, thinner ratio is 6%.
The dilution water system of Voith company head box is designed to: dilution water is distributed to each dilution water arm from house steward, and the dilution water arm is installed between the slurry stream arm, and is vertical with slurry stream arm.Every dilution water arm all passes through a metering valve, according to the aperture of the needs control valve of regulating cross direction ration, with the dilution water injection slurry stream arm upstream of certain flow.
The dilution regulating system of Valmet (existing Metso) company's head box is made up of the dilution water control valve of band actuator, valve control system, dilution water inlet valve etc., and dilution water mixing portion is installed in between the slurry house steward and the tube bank of Bu slurry.On banner direction, head box just has a dilution zone every about 60mm, and there is independent dilution water pipe each dilution zone, and the dilution water yield is regulated by synchronous motor executing agency and valve.
From above three kinds of typical dilution water adding methods as can be seen, one, dilution water inject the upstream of cloth slurry arm, the dilution water arm is installed between the cloth slurry arm, because be subjected to the restriction of a cloth slurry tube pitch, dilution water arm size can not be too big, and too small caliber is when adopting plain boiled water to make dilution water, cause the dilution water arm to stop up easily, if adopt not susceptible to plugging dilution water caliber, must leave enough big space between so every row cloth slurry pipe, this has influenced the arrangement of cloth slurry pipe again; They are two years old, the corresponding tubulation bundle of one row dilution water arm, dilution water decanting point banner spacing is generally 60mm, and the centre-to-centre spacing of cloth slurry arm submits to the requirement of even cloth slurry, its centre-to-centre spacing is usually less than 60mm, for example 30mm or 40mm, thereby dilution water can not inject the pipe of whenever being disbursed from the cost and expenses, and can only be to add row every row or several row.This can influence the regulating effect of cross direction ration undoubtedly.Can certainly dwindle the banner spacing of dilution water decanting point, its banner spacing with cloth slurry arm is equated, thereby make dilution water inject the pipe of whenever being disbursed from the cost and expenses, but this will increase the quantity of dilution water control valve greatly, raising is controlled cost, the more important thing is, use so little adjustable range to adjust the dilution water valve flexibly and accurately according to the measured value of reeling end.Because each kind operating condition difference causes complicated slurry rheologyization inevitably, therefore must make dynamic adjusting, and automatic control has been proposed high requirement.Its three because the dilution water arm is installed between cloth slurry arm, and must link to each other with every pipe in every row cloth slurry pipe, this has proposed very high requirement to processing and manufacturing.
The utility model content
The purpose of this utility model is the defective at the prior art existence, and a kind of dilution water adding set of head box is provided.Described device injects head box with dilution water, changes the quantitative of paper corresponding position by changing local slurry concentration.
The dilution water adding set of a kind of head box of the present utility model comprises dilution water house steward, dilution water arm, dilution water control valve and dilution water module.Described dilution water module is installed in between the tube bank of slurry house steward and cloth slurry, and dilution water arm one end links to each other with the dilution water house steward, and the other end links to each other with the dilution water module, and dilution water becomes 0～90 to spend injection head box reduction paste and flow with main slurry stream.
Described dilution water control valve is installed on the dilution water arm, and is connected with stepper motor, and in order to regulating the dilution water flow, and to make thinner ratio be 5～15%.Rare plain boiled water that described dilution water can adopt clear water or purify through screening; Described stepper motor can be by the control system of paper machine, according to the measurement result of paper cross direction ration, by the aperture of computer control dilution water valve.
Described dilution water module with so that dilution water fully mixes with main slurry stream, is formed along head box is transversely arranged by a plurality of unit.Described unit is made up of stock inlet, mixer, grout outlet, dilution water import.The cross sectional shape of described stock inlet is a rectangle, and width depends on the columns of institute's control bundle, can equal the width of row or the tube bank of multiple row cloth slurry, and height equates with the open height that goes out that advances to starch house steward; The cross sectional shape of described grout outlet is a rectangle, and size is identical with stock inlet; The cross sectional shape of described mixer is circular, square or polygon, the diameter of described circle or the square length of side are Φ 15cm～Φ 25cm, the import of mixer is connected with stock inlet by the pipeline that symmetry gradually expands stock inlet to, and the outlet of mixer is connected with grout outlet by the symmetrical pipeline that expands grout outlet to gradually; Described stock inlet is 100mm～200mm to the pipeline length between the grout outlet, and the length of mixer is about stock inlet to 1/3 of the pipeline length between the grout outlet; Described dilution water import is positioned at the top of dilution water module, is connected to the stock inlet of each unit in the dilution water module and the pipeline between the mixer import by pipeline, and the dilution water import also links to each other with the dilution water arm.
The described dilution water house steward side's of being taper house steward or conical house steward, with head box to advance to starch house steward the same, can design by the Bai Nasi equation, the isostasy of regulating the dilution water house steward by return valve, thereby guarantee that the dilution water flow that enters each arm equates.
Because the dilution water arm is not mounted between the cloth slurry tube bank, thereby the size of dilution water arm is not subjected to the influence of cloth slurry tube bank arrangement pitches, can adopt relatively large caliber, avoids the materials such as fiber in the dilution water to stop up the dilution water arm.Dilution water injects main slurry stream with certain angle, and fully mixes in mixer, and it is intrafascicular to enter each tubulation by grout outlet then.The slurry flow resistance is mainly produced by mixer in the dilution water unit, and the structure of each unit in the dilution water module, size are identical, the slurry flow resistance is equal fully, the total amount that so can guarantee to enter the slurry of mixer and dilution water is equal fully, so the adding of dilution water does not change and enters that each tubulation is intrafascicular to advance to starch total amount, regulated the intrafascicular slurry concentration of each tubulation again effectively, regulated the purpose of paper cross direction ration thereby reached by adding dilution water.
The utility model both had been fit to new head box, be fit to very much the transformation of existing head box again, in the transformation process, only need newly add a dilution water regulating system, then the dilution water module is installed in into and gets final product between the tube bank of slurry house steward and cloth slurry, and need not carry out big transformation headbox structure.The utility model is by adopting rational addition manner, prevent that the dilution water arm from stopping up, improve the effect of utilizing dilution water to regulate cross direction ration, make processing and manufacturing more simple and convenient simultaneously, distribute thereby can obtain desirable cross direction ration with simple device and cheap cost.
Compared with prior art, the utlity model has following advantage:
1. the dilution water arm is installed in the top of dilution water module, rather than between cloth slurry arm, thereby can choose bigger caliber as required, avoided the obstruction of dilution water arm.
2. each unit of dilution water module can be controlled the slurry concentration of row or multiple row tube bank as required, satisfies different Substances and regulates requirement.
3, processing and fabricating is simple, and equipment cost is low.
Description of drawings
Fig. 1 is the structural representation of the utility model device;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the local rotation diagram that amplifies in the C place of Fig. 2;
Fig. 4 is that the B of Fig. 2 is to cutaway view;
Fig. 5 is the profile of the dilution water module among Fig. 1.
The specific embodiment
Among Fig. 1, the dilution water adding set of head box of the present utility model contains dilution water house steward 2, stepper motor 3, dilution water control valve 4, dilution water arm 5 and dilution water module 6 to be formed, and dilution water module 6 is installed in the head box taper and advances to starch between house steward 1 and the cloth slurry tube bank 7.The top of dilution water module 6 enters the mouth (piece number 6-4 among Fig. 2) along the dilution water that laterally has of head box, by the horizontal difference of the dilution water behind the control valve 4 adjusting flows along head box, is mixed in the head box through dilution water module 6 and the main stream of starching.
Among Fig. 2, the diameter of cloth slurry tube bank 7 each pipe is Φ 18mm, centre-to-centre spacing is 30mm, the slurry concentration of the adjacent two tubulation bundles of designing requirement dilution water module 6 each unit controls, thereby, the exit width of each unit of dilution water module is greater than 48mm, consider the wall thickness between each unit, the width of each unit is 60mm, and its internal height equals the open height that goes out that taper advances to starch house steward 1, the outlet of each unit can comprise the import of two tubulation bundles, as shown in Figure 3.The unit number of forming the dilution water module is half of whole cloth slurry tube bank columns.
Among Fig. 4, dilution water arm 5 is installed in the centre position of dilution water module 6 each unit, each cell width is 60mm, dilution water arm 5 spacings also are 60mm, also can reduce or increase the spacing of dilution water arm as required, by each unit of dilution water module to row or more the tube bank of multiple row for slurry, the slurry concentration of row or multiple row is regulated in a unit, thereby regulates the cross direction ration of paper.
The structure of each component units of dilution water module is made up of stock inlet 6-1, mixer 6-2, grout outlet 6-3 and dilution water inlet 6-4 as shown in Figure 5, and its stock inlet 6-1 and grout outlet 6-3 are rectangle.Mixer is tubular, is positioned at the centre of dilution water module, and the symmetrical gradually import that is retracted to mixer 6-2 of stock inlet 6-1 is then again by the symmetrical gradually grout outlet 6-3 that is extended to the dilution water module of the outlet of mixer 6-2.Dilution water flow and main slurry stream are gone between the stock inlet 6-1 and mixer 6-2 of each unit into about 80 ° of subscripts.Among Fig. 4, the diameter of mixer 6-2 is Φ 20mm, and length is 30mm, main slurry stream is fully mixed in the pipe of mixer with dilution water, flow to through the slurry after the concentration adjustment in the cloth slurry tube bank of head box, by lip whitewashing online, the cross direction ration of control paper distributes at last.
Claims (5)
1. the dilution water adding set of a head box is characterized in that mainly by the dilution water house steward, the dilution water arm, and the dilution water control valve, the dilution water module constitutes; Described dilution water module is installed in between the tube bank of slurry house steward and cloth slurry, and dilution water arm one end links to each other with the dilution water house steward, and the other end links to each other with the dilution water module, makes dilution water become 0～90 to spend injection head box diluent stream and starch with main slurry stream;
Described dilution water control valve is installed on the dilution water arm, and is connected with stepper motor;
Described dilution water module with so that dilution water fully mixes with main slurry stream, is formed along head box is transversely arranged by a plurality of unit; Described unit is made up of stock inlet, mixer, grout outlet, dilution water import; Described mixer, its import is connected with stock inlet by the pipeline that symmetry gradually expands stock inlet to, and it exports by the symmetrical pipeline that expands grout outlet to gradually and is connected with grout outlet; Described stock inlet is 100mm～200mm to the pipeline length between the grout outlet, and the length of mixer is about stock inlet to 1/3 of the pipeline length between the grout outlet; Described dilution water import is positioned at the top of dilution water module, is connected to the stock inlet of each unit in the dilution water module and the pipeline between the mixer import by pipeline, and links to each other with the dilution water arm.
2. device according to claim 1, the cross sectional shape that it is characterized in that described stock inlet is a rectangle, and width depends on that the columns of institute's control bundle equals the width of row or the tube bank of multiple row cloth slurry, and height equates with the open height that goes out that advances to starch house steward.
3. device according to claim 1 and 2, the cross sectional shape that it is characterized in that described grout outlet is a rectangle, size is identical with stock inlet.
4. device according to claim 3, the cross sectional shape that it is characterized in that described mixer is circular, square or polygon, the diameter of described circle or the square length of side are Φ 15cm～Φ 25cm.
5. device according to claim 4 is characterized in that described dilution water house steward is square conical pipe or conical tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620059755XU CN201003125Y (en) | 2006-05-31 | 2006-05-31 | Head box diluting water addition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620059755XU CN201003125Y (en) | 2006-05-31 | 2006-05-31 | Head box diluting water addition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003125Y true CN201003125Y (en) | 2008-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620059755XU Expired - Fee Related CN201003125Y (en) | 2006-05-31 | 2006-05-31 | Head box diluting water addition device |
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| CN (1) | CN201003125Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012629B (en) * | 2006-05-31 | 2011-04-27 | 华南理工大学 | Diluting water adding device of head box |
| CN102212980A (en) * | 2010-04-08 | 2011-10-12 | 美卓造纸机械公司 | Structural element for headbox of fiber-fed machine |
| CN103111207A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Square emulsion preparing device |
| CN103184703A (en) * | 2013-03-19 | 2013-07-03 | 陕西科技大学 | Flow box |
| CN105648827A (en) * | 2016-03-11 | 2016-06-08 | 韦周全 | Dry paper making device and method |
-
2006
- 2006-05-31 CN CNU200620059755XU patent/CN201003125Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012629B (en) * | 2006-05-31 | 2011-04-27 | 华南理工大学 | Diluting water adding device of head box |
| CN102212980A (en) * | 2010-04-08 | 2011-10-12 | 美卓造纸机械公司 | Structural element for headbox of fiber-fed machine |
| CN102212980B (en) * | 2010-04-08 | 2014-01-29 | 美卓造纸机械公司 | Structural element for headbox of fiber-fed machine |
| CN103111207A (en) * | 2013-02-04 | 2013-05-22 | 西安交通大学 | Square emulsion preparing device |
| CN103184703A (en) * | 2013-03-19 | 2013-07-03 | 陕西科技大学 | Flow box |
| CN103184703B (en) * | 2013-03-19 | 2015-06-03 | 陕西科技大学 | Flow box |
| CN105648827A (en) * | 2016-03-11 | 2016-06-08 | 韦周全 | Dry paper making device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20100531 |