CN218508129U - Boot type squeezing device - Google Patents
Boot type squeezing device Download PDFInfo
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- CN218508129U CN218508129U CN202222272170.8U CN202222272170U CN218508129U CN 218508129 U CN218508129 U CN 218508129U CN 202222272170 U CN202222272170 U CN 202222272170U CN 218508129 U CN218508129 U CN 218508129U
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- boot
- shoe
- hydraulic control
- control unit
- pressurizing device
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Abstract
The utility model provides a device is squeezed to boots formula, including fixed connection's central roof beam, pressure device and shoe board in proper order, central roof beam still is fixed with the shoe cover support frame, and the shoe cover support frame outside is provided with the shoe cover, pressure device is connected with the hydraulic control unit to divide into five nips. The shoe press device can realize the zonal dewatering control of wet paper sheets without influencing production operation and product quality, and can improve the bulk of finished paper, thereby improving the papermaking quality.
Description
Technical Field
The utility model relates to a papermaking equipment especially relates to a device is squeezed to boots formula.
Background
The decorative base paper is a high-ash special paper, the content of conventional ash is 30-40%, and the content of conventional ash is up to 45%, so that the dehydration of the pressing part of the decorative base paper is difficult. In order to adapt to the characteristic of high ash content of the decorative base paper, the pressing mode of the decorative base paper in a pressing part is generally 606 compound pressing plus one roller type positive pressing, and 3 pressing areas are provided. Compared with other vacuum pressing modes, the roller type positive pressing mode can not only shorten the occupied space of the pressing part, but also reduce the equipment investment cost, and the expression form of the decorative base paper at the stage is a wet paper, but also has the following problems to be improved and perfected: the dryness of the wet paper leaving the press part is lower than 50 percent, the steam consumption of the press part is higher, and the design speed is generally between 250 and 800 m/min; and the pressure of a pressing line is higher, the bulk of the decorative base paper is generally less than 1.05g/cm < 3 >, and the improvement of the absorptivity is limited.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device is squeezed to boots formula has solved the problem of decorating the body paper in the dehydration of press portion, through reducing the line pressure that squeezes, improves nip width etc. improves the wet paper page or leaf of decorating the body paper and goes out to squeeze the problem that the dryness fraction is low excessively and bulk is low, its technical scheme as follows:
the utility model provides a device is squeezed to shoe formula, includes central beam, pressure device and the shoe board of fixed connection in proper order, central beam still is fixed with the shoe cover support frame, and the shoe cover support frame outside is provided with the shoe cover, pressure device is connected with the hydraulic control unit to divide into five nips.
The top surface of the boot plate is concave, the width of the pressure area is 250mm, the top surface is in contact with the lower surface of the boot sleeve, and the bottom surface is connected with the pressurizing device.
The pressurizing device 2 is provided with 14 pistons along the length direction of the shoe plate 1, the pistons are divided into 5 press areas, the middle pistons are in a group with 6 pistons, and the rest pistons are in a group with 2 pistons.
The hydraulic control units are divided into 5 groups corresponding to the 5 press areas, and are sequentially an operation side second hydraulic control unit, an operation side first hydraulic control unit, a center pressure hydraulic control unit, a transmission side first hydraulic control unit and a transmission side second hydraulic control unit from one end to the other end.
The boot sleeve is of a multi-layer and grooved type and is fixed through an end face clamp of the boot sleeve support frame.
The central beam is fixedly connected with a piston base of the pressurizing device.
The maximum line pressure of the pressurizing device is 800kN/m.
A boot pressing pair roller is arranged above the boot roller, the boot pressing pair roller is fixed on the press frame through a bearing seat and is matched with the boot roller for use, and the included angle between the central points of the boot pressing pair roller and the boot roller is 5-10 degrees
The utility model provides an among the boot formula press device, when the boot board pressurizes through pressure device, divide into 5 nips and carry out the accurate control, every nip designs solitary pressure component, and the lateral moisture of certain region of accurate adjustment, ration subregion control realize wet paper page or leaf, promote horizontal homogeneity, avoid appearing catching up with a book, leaking quality problems such as glue.
Through the shoe type squeezing device, the wet paper sheet-out squeezing dryness and the bulk of the decorative base paper can be improved, the quality and the energy consumption of the decorative base paper are improved, the secondary pressing dryness of the wet paper sheet-out is improved by 2%, the squeezing dryness is improved by 3%, the highest production speed is improved to 1000m/min from 800m/min, the steam consumption of a drying part is reduced, the number of times of squeezing and paper breaking is reduced by 90%, and the operation cost is optimized. The loose thickness loss of the squeezed wet paper is reduced, the loose thickness of the finished paper is improved by 6 percent, the printing and gum dipping performances of the base paper are improved, and the method is more suitable for high-speed printing and gum dipping machines.
Drawings
Fig. 1 is a plan view of the shoe press apparatus;
fig. 2 is a side view of the shoe press apparatus:
the reference numbers in the figures are as follows:
1-a boot plate; 2-a pressurizing device; 3-boot sleeve; 4-shoe rolls; 5-wet paper sheet; 6-a central beam; 7-shoe press pair rollers; 8-an operation-side second hydraulic control unit; 9-an operation-side first hydraulic control unit; 10-a central hydraulic control unit; 11-a transmission side first hydraulic control unit; 12-a transmission side second hydraulic control unit.
Detailed Description
As shown in fig. 1 and 2, the shoe press apparatus includes a shoe cover 3, a shoe roll 4 and a hydraulic control unit, the shoe roll 4 includes a central beam 6, a pressing device 2 and a shoe plate 1 which are fixedly connected in sequence, the central beam 6 is further fixed with a shoe cover support frame, the shoe cover 3 is located on the outer side of the shoe cover support frame, and the pressing device 2 is connected with the hydraulic control unit.
The shoe pressing double-roll machine is characterized in that a shoe pressing double-roll 7 is arranged above the shoe roll 4, the shoe pressing double-roll 7 is fixed on a frame beam of a squeezing part through a bearing seat and is matched with the shoe roll 4 for use, and the included angle between the central points of the shoe pressing double-roll 7 and the shoe roll 4 (namely the included angle between the straight line where the central points of the shoe pressing double-roll 7 and the shoe roll 4 are located and the straight line in the vertical direction) is 5-10 degrees and is used for improving the front smoothness of decorative base paper and matching with the shoe roll 4 to remove moisture in the wet paper 5.
The wet paper 5, the banner passes through the tangent point positions of the two rollers of the shoe roller 4 and the shoe pressing roller 7, the front side of the banner contacts with the shoe pressing roller 7 to obtain good smoothness, and the back side of the banner contacts with the shoe roller 4 to remove excessive moisture.
The shoe plate 1, the pressurizing means 2 and the center beam 6 are located inside the boot sleeve 3, and the boot sleeve 3 is located outside the boot sleeve support frame.
The top surface of the shoe board 1 is concave, the width of a press area is 250mm, the top surface is contacted with the lower surface of the shoe sleeve 3, and the bottom surface is connected with the pressurizing device 2. The utility model discloses optimize 250mm to the nip width that corresponds boot plate 1 by 30mm for wet paper page or leaf nip dwell time promotes to 0.015s by 0.003s, presses dewatering efficiency with the increase boots.
The pressing device 2 is provided with 14 pistons along the length direction of the shoe plate 1, the pistons are divided into 5 press nips for accurate control, each press nip is provided with an independent pressing element, and the pressing pressure of a certain press nip can be accurately adjusted according to the quality difference of the paper banner so as to ensure the quality uniformity of the banner. The utility model discloses in, 6 pistons are a the control unit in the middle of with, 8 pistons remain, and every 2 a set of control units as, from one end to the other end be operation side second hydraulic control unit 8, the first hydraulic control unit 9 of operation side, central pressure hydraulic control unit 10, the first hydraulic control unit 11 of transmission side and transmission side second hydraulic control unit 12 in proper order.
The boot sleeve 3 is of a multi-layer and groove type and is fixed through an end face clamp of the boot sleeve support frame. The central beam 6 is formed by welding high-strength low alloy, and the two ends of the central beam are respectively provided with an operation side shaft head and a transmission side shaft head which are arranged on a frame beam of the squeezing part. Which is fixedly connected with the piston base of the pressurizing device 2 for fixing the pressurizing device 2. The hydraulic control unit is connected and controlled with the piston of the pressurizing device 2 according to 5 zones individually, so that the oil quantity is controlled through an oil inlet pipe and an oil outlet pipe, and the pressure stability of the pressurizing device 2 is ensured.
Furthermore, in the pressurizing device 2, the designed maximum line pressure of the original vacuum press roll is adjusted from 120kN/m to 800kN/m of the shoe roll 4, and the nip width is also extended from 30mm to 250mm of the shoe plate 1, namely, the pressure received by the unit area of the wet paper sheet 5 is reduced from 4000kPa to 3200kPa, so that the bulk loss of the wet paper sheet in the press part can be reduced, and the bulk of the finished decorative base paper is improved.
The procedure used is as follows:
the wet paper sheet 5 passes through a contact point of the shoe pressing roller pair and the shoe roller through the paper guiding system, the shoe pressing roller pair 7 and the shoe roller 4 are in a closed non-pressing state, 5 press areas of the shoe roller pressing device 2 are subjected to pressing and pressure relief control sequentially through the hydraulic control units 8, 9, 10, 11 and 12 according to a pressing line pressure set value fed back by the control system, after the line pressure reaches the set value of the control system, the line pressure is fed back to the hydraulic control units 8, 9, 10, 11 and 12 and the pressing device 2, pressure adjustment is not carried out any more, and the pressure applied to the wet paper sheet 5 by the shoe pressure is stabilized.
The shoe type squeezing device can improve the wet paper sheet squeezing dryness and the bulk of the decorative base paper, the quality and the energy consumption of the decorative base paper are improved, the secondary paper sheet squeezing dryness of the wet paper sheet 5 is improved by 2%, the squeezing dryness is improved by 3%, the maximum running speed of the whole paper machine is improved to 1000m/min from 800m/min, the steam consumption of a drying part is reduced, the paper squeezing and breaking times are reduced by 90%, and the running cost is optimized. The press bulk loss of the wet paper is reduced, the bulk of the finished paper is improved by 6 percent, the printing and gumming performances of the base paper are improved, and the wet paper is more suitable for high-speed printing and gumming machines.
Claims (8)
1. A shoe press device characterized in that: the boot roller comprises a central beam, a pressurizing device and a boot plate which are fixedly connected in sequence, the central beam is further fixed with a boot sleeve supporting frame, a boot sleeve is arranged on the outer side of the boot sleeve supporting frame, and the pressurizing device is connected with the hydraulic control unit and is divided into five press areas.
2. The shoe press apparatus according to claim 1, characterized in that: the top surface of the boot plate is concave, the width of the pressure area is 250mm, the top surface is in contact with the lower surface of the boot sleeve, and the bottom surface is connected with the pressurizing device.
3. A shoe press apparatus according to claim 1, characterized in that: the pressurizing device is provided with 14 pistons along the length direction of the shoe plate, the pressurizing device is divided into 5 press areas, the middle 6 pistons form one group, and the rest 8 pistons form one group every 2.
4. The shoe press apparatus according to claim 3, characterized in that: the hydraulic control units are divided into 5 groups corresponding to the 5 press areas, and are sequentially an operation side second hydraulic control unit, an operation side first hydraulic control unit, a center pressure hydraulic control unit, a transmission side first hydraulic control unit and a transmission side second hydraulic control unit from one end to the other end.
5. The shoe press apparatus according to claim 1, characterized in that: the boot sleeve is of a multi-layer and grooved type and is fixed through an end face clamp of the boot sleeve supporting frame.
6. The shoe press apparatus according to claim 1, characterized in that: the central beam is fixedly connected with a piston base of the pressurizing device.
7. A shoe press apparatus according to claim 1, characterized in that: the maximum line pressure of the pressurizing device is 800kN/m.
8. A shoe press apparatus according to claim 1, characterized in that: and a boot pressing pair roller is arranged above the boot roller, is fixed on the press rack through a bearing seat and is matched with the boot roller for use, and the included angle between the central points of the boot pressing pair roller and the boot roller is 5-10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222272170.8U CN218508129U (en) | 2022-08-29 | 2022-08-29 | Boot type squeezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222272170.8U CN218508129U (en) | 2022-08-29 | 2022-08-29 | Boot type squeezing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218508129U true CN218508129U (en) | 2023-02-21 |
Family
ID=85208534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222272170.8U Active CN218508129U (en) | 2022-08-29 | 2022-08-29 | Boot type squeezing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218508129U (en) |
-
2022
- 2022-08-29 CN CN202222272170.8U patent/CN218508129U/en active Active
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