CN104480773A - Scraper device for papermaking dryer - Google Patents
Scraper device for papermaking dryer Download PDFInfo
- Publication number
- CN104480773A CN104480773A CN201410651199.4A CN201410651199A CN104480773A CN 104480773 A CN104480773 A CN 104480773A CN 201410651199 A CN201410651199 A CN 201410651199A CN 104480773 A CN104480773 A CN 104480773A
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- CN
- China
- Prior art keywords
- scraper
- drying cylinder
- mount pad
- tracheae
- paper
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Classifications
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G3/00—Doctors
- D21G3/04—Doctors for drying cylinders
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- Paper (AREA)
Abstract
The invention relates to the technical field of papermaking equipment, in particular to a scraper device for a papermaking dryer. The scraper device for the papermaking dryer structurally comprises a support frame and a plurality of scraper units. Every scraper unit comprises an upper press plate, a lower press plate, a scraper mounting base, a pressurizing airbag, an opening airbag and an airbag control system. According to the scraper device for the papermaking dryer, the pressure of the pressurizing airbag and the opening airbag is automatically adjusted, so that the contact between a scraper and the surface of a dryer guide roller is uniform and the cleaning effect of the scraper on the guide roller is improved, and the contact pressure of the scraper with the roller surface changes with the unevenness of the roller surface for avoiding damaging the roller surface in a cleaning process of the scraper.
Description
Technical field
The application relates to paper making equipment technical field, particularly relates to a kind of doctor blade device of paper-making drying cylinder.
Background technology
Along with the development of paper industry technology, package paper enterprise must increase the kind of packaging product, with Improving The Quality of Products, and then raising product competitiveness in the market, but in light basis weight boxboard production process, because cutting device cleaning effect on high speed paper machine is undesirable, often cause disconnected paper or the product quality problem such as paper is dirty, have a strong impact on production efficiency and product quality.
The cutting device of existing paper machine dryer generally comprises dead-weight and air-cylinder type, and the cutting device pressure of dead-weight regulates loaded down with trivial details, easy scratch deflector roll, and cleaning is unclean, and scraper is not easily changed; Although and the cutting device of air-cylinder type solves the not easily changeable problem of scraper, regulate line pressure by cylinder, fine adjustment screw, complex operation; The control system of the cutting device of above-mentioned two kinds of forms can not regulate voluntarily to scraper line pressure, cause scraper to contact with roll surface uneven, cleaning effect is poor, and can not regulate voluntarily scraper line pressure, easy scratch deflector roll, shorten the service life of deflector roll, and then have a strong impact on the quality of product, reduce the market competitiveness, simultaneously, the drying cylinder deflector roll axial length of paper machine is longer, needs to install multiple scraper and could cover whole axial roll surface, causes the installation of scraper and dismantles comparatively loaded down with trivial details.
Summary of the invention
The object of the application is to avoid weak point of the prior art and provides a kind of and improve drying cylinder cleaning effect, automatically can regulate line pressure and can avoid the doctor blade device of the paper-making drying cylinder of scratch drying cylinder deflector roll.
The object of the application is achieved through the following technical solutions:
A kind of doctor blade device of paper-making drying cylinder is provided, comprise the support being installed on drying cylinder deflector roll and several doctor units being arranged at described support, several doctor units described are arranged side by side in described support, each doctor unit comprises top board, lower platen, scraper mount pad, pressurised airbag and open gas cells, the top of described scraper mount pad is fixedly connected with described top board, described scraper mount pad is by bearing pin and described lower platen pivot joint, described pressurised airbag and open gas cells are arranged at the both sides of described bearing pin respectively, breach is provided with between one end of described scraper mount pad and described top board, scraper is clamped with in described breach,
Described doctor blade device also includes airbag control system, described airbag control system comprises controller, aerating device, the first tracheae and the second tracheae, the pressurised airbag of several doctor units described is all communicated with by the first tracheae, the open gas cells of several doctor units described is all communicated with by the second tracheae, described first tracheae is communicated with described aerating device by total inlet pipe with the second tracheae, described total inlet pipe is provided with solenoid directional control valve and pressure-reducing valve, and described solenoid directional control valve and described pressure-reducing valve are electrically connected with described controller respectively.
wherein,described lower platen is provided with support member, and described support member is by described bearing pin and the pivot joint of described scraper mount pad.
wherein,one end of described scraper mount pad offers groove, one end of described scraper is arranged at described groove and is jointly clamped by described scraper mount pad and described top board, and the angle between the plane at described scraper place and described top board place plane is set to 5 ~ 8 degree.
wherein,angle between the roll surface of described scraper place plane and described drying cylinder deflector roll is set to 25 ~ 27 degree.
wherein,described top board is fixedly connected with by elastic component with described lower platen.
wherein,described total inlet pipe is provided with Pressure gauge.
the beneficial effect of the application:
When the doctor blade device of a kind of paper-making drying cylinder of the application works, when aerating device is inflated pressurised airbag, pressurised airbag is exerted pressure to scraper mount pad, scraper mount pad is rotated to an angle around bearing pin, and by the inflation/deflation to the open gas cells of bearing pin opposite side, finely tune the anglec of rotation of scraper mount pad, thus the blade of scraper is contacted with the roll surface of drying cylinder deflector roll also, and shape is at a certain angle, scraper and roll surface produce contact thereupon.Airbag control system of the present invention achieves the automatic adjustment of the pressure to pressurised airbag and open gas cells, because air bag has better pliability, the line pressure that controller makes two air bags be passed to scraper by the regulation and control of the pressure to pressurised airbag and open gas cells is more balanced, thus the roll surface of scraper and drying cylinder deflector roll Contact evenly, improve scraper to the cleaning effect of deflector roll, and the contact of scraper and roll surface changes along with the uneven of roll surface, and scraper cleaning course can be avoided to cause damage to roll surface.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the application, but the content in accompanying drawing does not form any restriction to the application.
Fig. 1 is the structural representation of the doctor blade device of a kind of paper-making drying cylinder of the application.
Fig. 2 is the structural representation of the scraper clamp of the doctor blade device of a kind of paper-making drying cylinder of the application.
Fig. 3 is the principle schematic of the airbag control system of the doctor blade device of a kind of paper-making drying cylinder of the application.
Reference numeral:
Support 1;
Pressurised airbag 2;
Open gas cells 3;
Doctor unit 4;
Top board 41, lower platen 42;
Scraper mount pad 43, groove 431;
Scraper 44, bearing pin 45, support member 46;
Airbag control system 5, aerating device 51, first tracheae 52, second tracheae 53, total inlet pipe 54;
Pressure gauge 6;
Solenoid directional control valve 7;
Pressure-reducing valve 8.
Detailed description of the invention
With the following Examples and accompanying drawing the application is described further.
The doctor blade device of a kind of paper-making drying cylinder of the application, as shown in Figure 1 to Figure 3, comprise the support 1 being installed on drying cylinder deflector roll, be arranged at several doctor units 4 of support 1, several doctor units 4 are arranged side by side in support 1, each doctor unit 4 comprises top board 41, lower platen 42, scraper mount pad 43, pressurised airbag 2 and open gas cells 3, the top of scraper mount pad 43 is fixedly connected with top board 41, scraper mount pad 43 is by bearing pin 45 and lower platen 42 pivot joint, pressurised airbag 2 and open gas cells 3 are arranged at the both sides of bearing pin 45 respectively, breach is provided with between one end of scraper mount pad 43 and top board 41, scraper 44 is clamped with in breach.
Doctor blade device also includes airbag control system 5, airbag control system 5 comprises controller, aerating device 511, first tracheae 52 and the second tracheae 53, the pressurised airbag 2 of all doctor units 4 is all communicated with by the first tracheae 52, the open gas cells 3 of all doctor units 4 is all communicated with by the second tracheae 53, first tracheae 52 is connected with aerating device 51 by total inlet pipe 54 with the second tracheae 53, total inlet pipe 54 is provided with solenoid directional control valve 7 and pressure-reducing valve 8, and solenoid directional control valve 7 and pressure-reducing valve 8 are electrically connected with controller respectively.
The operation principle of airbag control system 5 is as follows:
When needs pressurize to pressurised airbag 2 inflation, controller sends signal makes the output of solenoid directional control valve 7 be communicated with the first tracheae 52, and now, aerating device 51 pairs of pressurised airbag 2 are inflated, and pressurised airbag 2 pairs of scraper mount pads 43 are exerted pressure; When needs are inflated open gas cells 3 or exit, controller sends signal makes the output of solenoid directional control valve 7 be communicated with the second tracheae 53, thus realizes the automatic adjustment to two gasbag pressures.
Total inlet pipe 54 is provided with Pressure gauge 6, for detecting the pressure in total inlet pipe 54, when the air pressure of total inlet pipe 54 exceeds the value range of setting, controller sends signal and reaches the requirement met to pressure-reducing valve 8 with the output pressure adjusting aerating device 51, thus guarantees to keep stable to the line pressure of scraper 44.
Pressurised airbag 2 and open gas cells 3 are the air bags be made up of rubber and fibrous material, thus have better pliability, and its pressure passing to scraper 44 is more balanced, are conducive to the cleaning effect improving scraper 44.
In the present embodiment, lower platen 42 is provided with support member 46, and support member 46 is by bearing pin 45 and scraper mount pad 43 pivot joint.
One end of scraper mount pad 43 offers groove 431, and one end of scraper 44 is arranged at groove 431 and is jointly clamped by scraper mount pad 43 and top board 41, and the angle between the plane at scraper 44 place and top board 41 place plane is set to 5 ~ 8 degree.
When needing the scraper 44 changing single doctor unit, only need inflate to pressurised airbag 2, make pressurised airbag 2 by top board 41 jack-up, namely replaceable scraper 44, changes complete, then pressurised airbag 2 is exitted, and scraper 44 is resetted, this flexible and convenient operation
Angle between scraper 44 place plane and the roll surface of drying cylinder deflector roll is set to 25 ~ 27 degree, and this angle makes scraper 44 more balanced with the contact that roll surface produces, and is conducive to the cleaning effect improving scraper 44 pairs of deflector rolls.
Top board 41 is fixedly connected with by elastic component 47 with lower platen 42.
The operation principle of the application is as follows:
When aerating device 51 pairs of pressurised airbag 2 are inflated, pressurised airbag 2 pairs of scraper mount pads 43 are exerted pressure, scraper mount pad 43 is rotated to an angle around bearing pin 45, and by the inflation/deflation to the open gas cells 3 of bearing pin 45 opposite side, the anglec of rotation of scraper mount pad 43 is finely tuned, thus shape is at a certain angle to make the blade of scraper 44 contact with the roll surface of drying cylinder deflector roll also, scraper 44 and roll surface produce contact thereupon.Because air bag has better pliability, the line pressure that controller makes two air bags be passed to scraper 44 by the regulation and control of the pressure to pressurised airbag 2 and open gas cells 3 is more balanced, thus scraper 44 and the roll surface of drying cylinder deflector roll Contact evenly, improve the cleaning effect of scraper 44 pairs of deflector rolls, and scraper 44 changes along with the uneven of roll surface with the contact of roll surface, and scraper 44 cleaning course can be avoided to cause damage to roll surface.
Finally should be noted that; above embodiment is only for illustration of the technical scheme of the application but not the restriction to the application's protection domain; although be explained in detail the application with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical scheme of the application or equivalent replacement, and not depart from essence and the scope of technical scheme.
Claims (6)
1. the doctor blade device of a paper-making drying cylinder, comprise the support being installed on drying cylinder deflector roll and several doctor units being arranged at described support, several doctor units described are arranged side by side in described support, it is characterized in that: each doctor unit comprises top board, lower platen, scraper mount pad, pressurised airbag and open gas cells, the top of described scraper mount pad is fixedly connected with described top board, described scraper mount pad is by bearing pin and described lower platen pivot joint, described pressurised airbag and open gas cells are arranged at the both sides of described bearing pin respectively, breach is provided with between one end of described scraper mount pad and described top board, scraper is clamped with in described breach,
Described doctor blade device also includes airbag control system, described airbag control system comprises controller, aerating device, the first tracheae and the second tracheae, the pressurised airbag of several doctor units described is all communicated with by the first tracheae, the open gas cells of several doctor units described is all communicated with by the second tracheae, described first tracheae is communicated with described aerating device by total inlet pipe with the second tracheae, described total inlet pipe is provided with solenoid directional control valve and pressure-reducing valve, and described solenoid directional control valve and described pressure-reducing valve are electrically connected with described controller respectively.
2. the doctor blade device of a kind of paper-making drying cylinder according to claim 1, is characterized in that: described lower platen is provided with support member, and described support member is by described bearing pin and the pivot joint of described scraper mount pad.
3. the doctor blade device of a kind of paper-making drying cylinder according to claim 1, it is characterized in that: one end of described scraper mount pad offers groove, one end of described scraper is arranged at described groove and is jointly clamped by described scraper mount pad and described top board, and the angle between the plane at described scraper place and described top board place plane is set to 5 ~ 8 degree.
4. the doctor blade device of a kind of paper-making drying cylinder according to claim 1, is characterized in that: the angle between the roll surface of described scraper place plane and described drying cylinder deflector roll is set to 25 ~ 27 degree.
5. the doctor blade device of a kind of paper-making drying cylinder according to claim 1, is characterized in that: described top board is fixedly connected with by elastic component with described lower platen.
6. the doctor blade device of a kind of paper-making drying cylinder according to claim 1, is characterized in that: described total inlet pipe is provided with Pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410651199.4A CN104480773A (en) | 2014-11-17 | 2014-11-17 | Scraper device for papermaking dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410651199.4A CN104480773A (en) | 2014-11-17 | 2014-11-17 | Scraper device for papermaking dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104480773A true CN104480773A (en) | 2015-04-01 |
Family
ID=52755371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410651199.4A Pending CN104480773A (en) | 2014-11-17 | 2014-11-17 | Scraper device for papermaking dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104480773A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813601A (en) * | 2016-09-10 | 2018-03-20 | 湖北际华新四五印染有限公司 | A kind of guide belt of decorating machine windshield wiper device |
| CN109222188A (en) * | 2018-10-29 | 2019-01-18 | 中国船舶工业总公司七五研究所宜昌分部 | Thick slurry thin slice flake machine and flake method |
| CN113275187A (en) * | 2021-07-20 | 2021-08-20 | 南通市通州区同博机械制造有限公司 | Secondary coating device capable of accurately controlling coating amount |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6022451A (en) * | 1997-12-09 | 2000-02-08 | James Ross Limited | Apparatus for removing contaminants from a rotating cylindrical roll |
| CN2400487Y (en) * | 1999-11-03 | 2000-10-11 | 山东省诸城市造纸机械厂 | Doctor |
| CN203222703U (en) * | 2013-04-24 | 2013-10-02 | 彭锦铜 | Paper machine scraper full-automatic on-line regulating device |
| CN203569388U (en) * | 2013-10-31 | 2014-04-30 | 东莞理文造纸厂有限公司 | Scraper device for dryer of paper machine |
| CN204251963U (en) * | 2014-11-17 | 2015-04-08 | 东莞理文造纸厂有限公司 | A kind of doctor blade device of paper-making drying cylinder |
-
2014
- 2014-11-17 CN CN201410651199.4A patent/CN104480773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6022451A (en) * | 1997-12-09 | 2000-02-08 | James Ross Limited | Apparatus for removing contaminants from a rotating cylindrical roll |
| CN2400487Y (en) * | 1999-11-03 | 2000-10-11 | 山东省诸城市造纸机械厂 | Doctor |
| CN203222703U (en) * | 2013-04-24 | 2013-10-02 | 彭锦铜 | Paper machine scraper full-automatic on-line regulating device |
| CN203569388U (en) * | 2013-10-31 | 2014-04-30 | 东莞理文造纸厂有限公司 | Scraper device for dryer of paper machine |
| CN204251963U (en) * | 2014-11-17 | 2015-04-08 | 东莞理文造纸厂有限公司 | A kind of doctor blade device of paper-making drying cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813601A (en) * | 2016-09-10 | 2018-03-20 | 湖北际华新四五印染有限公司 | A kind of guide belt of decorating machine windshield wiper device |
| CN109222188A (en) * | 2018-10-29 | 2019-01-18 | 中国船舶工业总公司七五研究所宜昌分部 | Thick slurry thin slice flake machine and flake method |
| CN113275187A (en) * | 2021-07-20 | 2021-08-20 | 南通市通州区同博机械制造有限公司 | Secondary coating device capable of accurately controlling coating amount |
| CN113275187B (en) * | 2021-07-20 | 2021-09-28 | 南通市通州区同博机械制造有限公司 | Secondary coating device capable of accurately controlling coating amount |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |