CN218812884U - Surface layer drifting system for grey-coated white board paper - Google Patents

Abstract

The utility model provides a grey primary coat cloth is surface course drifting system for white board paper, including supplying the thick liquid system, go up the stuff pump, the deslagging system, the fan pump, the pressurized screen system, the head box, supply the thick liquid system to provide surface course thick liquids, supply the discharge gate of thick liquid system and the feed inlet intercommunication of fan pump, the discharge gate intercommunication deslagging system's of going up the stuff pump feed inlet, the good thick liquid discharge gate intercommunication fan pump of deslagging system, the discharge gate of fan pump intercommunication pressurized screen system's feed inlet, the good thick liquid discharge gate intercommunication head box of pressurized screen system, the discharge gate of fan pump passes through the feed inlet of bypass intercommunication fan pump, be equipped with the bypass valve on the bypass, be equipped with first valve between fan pump and the deslagging system. This grey primary coat cloth is surface course drifting system for white board, when adopting different raw materials as the surface course raw materials of grey primary coat cloth white board, can switch different drifting circuit as required, both can guarantee the quality, can practice thrift the electric quantity again, reduction in production cost, and can not shut down on line and start/stop, convenient operation improves production efficiency.

Description

Surface layer drifting system for grey-coated white board paper

Technical Field

The utility model relates to a papermaking technical field especially relates to a grey primary coat cloth is surface course drifting system for white board paper.

Background

The grey base-coated white board is an important packaging paper, and is divided into four layers according to the structure, namely a surface layer, a lining layer, a core layer and a bottom layer from top to bottom. When the grey-coated white board is prepared, each layer is provided with a pulp supply system, a flow system and a net part, and the flow system is used for treating and conveying pulp to the net part, which can be referred to Chinese patent CN109082945A. In actual production, the surface layer approach flow system for producing the grey-base coated white board paper comprises a pulp supply system 200, a deslagging system 210, a pressure screen system 220 and a head box 230, wherein pulp provided by the pulp supply system 200 flows into the head box 230 after being sequentially processed by the deslagging system (deslagging device) 210 and the pressure screen system (pressure screen) 220. The deslagging system 210 removes impurities with heavy mass, small volume and small area, and the pressure screen system 220 mainly removes impurities with large volume and large area and mixed slurry. However, the raw material of the surface layer is not the same, and according to the market cost change and the customer demand, the following three types of commonly used surface layer materials are available, wherein the first type adopts 100% white wood pulp as the raw material; the second one adopts 100 percent office waste paper deinking pulp (85 degrees) as raw material; the third one adopts the mixture of white wood pulp and office waste paper deinking pulp (85 degrees) as the raw material. When 100% office waste paper deinking pulp (85 ℃) is used as a surface layer raw material of the grey prime coat white board, because the office waste paper deinking pulp contains impurities with heavy mass, small volume and small area, if a slag separator is not used for removing the impurities, the defects of scraper streak and the like generated in the subsequent coating working section can be caused to influence the finished product paper quality. When different raw materials are used as surface raw materials of the grey-coated white board paper, the slag removal system is started all the time, although the best effect can be obtained, the white wood pulp is relatively clean and almost has no impurities, when 100% of the white wood pulp is used as the surface raw material of the grey-coated white board paper, the benefit of the slag remover is not obvious, and a large amount of electricity consumption waste is caused by the use of the slag remover system, so that the cost is not paid.

In this regard, there is a need for an improved face layer approach flow system that can achieve both normal quality production of different face layer materials and reduced manufacturing costs to address the deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grey primary coat cloth is surface course drifting system for white board paper, when the surface course raw materials of adopting different raw materials as grey primary coat cloth white board paper, can switch different drifting circuit as required, both can guarantee the quality, can practice thrift the electric quantity again, reduction in production cost, and can open/stop on line incessantly, convenient operation improves production efficiency.

In order to realize the above-mentioned purpose, the utility model provides a grey primary coat cloth is surface course drifting system for white board paper, including supplying thick liquid system, starching pump, deslagging system, fan pump, pressure screen system, head box, supply thick liquid system to provide the surface course thick liquids, supply the discharge gate of thick liquid system with the feed inlet intercommunication of starching pump, the discharge gate intercommunication of starching pump the feed inlet of deslagging system, the good thick liquid discharge gate intercommunication of deslagging system the fan pump, the discharge gate intercommunication of fan pump the feed inlet of pressure screen system, the good thick liquid discharge gate intercommunication of pressure screen system the head box, the discharge gate of starching pump passes through the bypass intercommunication the feed inlet of fan pump, be equipped with the bypass valve on the bypass, the starching pump with be equipped with first valve between the deslagging system.

Compared with the prior art, the utility model discloses a grey primary coat cloth is surface course drifting system for white board paper, when adopting 100% white wood thick liquid as grey primary coat cloth white board paper surface course raw materials, close first valve, open the bypass valve, the surface course thick liquid that confession thick liquid system provided is sent into the fan pump through the bypass with the help of the stuff feeding pump, send into the pressurized screen system after the fan pump is handled, good thick liquid after the screening of pressurized screen system flows into the head box from good thick liquid discharge gate, for use, this in-process stops deslagging system work, need not the power consumption, and because of the white wood thick liquid is impurity-free almost, do not influence paper products quality; when 100% office waste paper deinking pulp (85 degrees) is adopted as a surface layer raw material of the grey primary coated white board, the first valve is opened, the bypass valve is closed, the surface layer pulp provided by the pulp supply system is fed into the deslagging system by virtue of the pulping pump, impurities are removed by the deslagging system, the good pulp flows into the pulping pump from a good pulp discharge port of the deslagging system, the good pulp is treated by the pulping pump and then fed into the pressure screen system, the good pulp screened by the pressure screen system flows into the pulp flowing box from the good pulp discharge port for standby application, the deslagging system is started to work in the process, impurities in the office waste paper deinking pulp can be removed, the quality of a paper product is improved, the paper product can be started/stopped on line without stopping, the operation is convenient, and the production efficiency is improved.

In some embodiments, the deslagging system comprises a first-stage deslagging pump, a first-stage deslagging device, a second-stage deslagging device pump, a second-stage deslagging device, a third-stage deslagging device pump, a third-stage deslagging device, a fourth-stage deslagging device pump and a fourth-stage deslagging device which are sequentially connected, the first valve is arranged between the first-stage deslagging device pump and the first-stage deslagging device, and a good pulp discharge hole of the first-stage deslagging device is communicated with the fan pump.

In some embodiments, a second valve is arranged between the first-stage slag remover and the fan pump.

In some embodiments, the good pulp discharge port of the second-stage slag separator is communicated with the feed port of the first-stage slag separator pump, and a third valve is arranged between the second-stage slag separator and the first-stage slag separator pump.

In some embodiments, the fine pulp outlet of the three-stage slag separator is communicated with the feed inlet of the two-stage slag separator pump.

In some embodiments, the good pulp outlet of the four-section slag separator is communicated with the inlet of the three-section slag separator.

In some embodiments, the pressure screen system comprises a first-stage pressure screen, a second-stage pressure screen pump and a second-stage pressure screen which are connected in sequence, wherein a feed inlet of the first-stage pressure screen is communicated with the fan pump, and a good pulp discharge outlet of the first-stage pressure screen is communicated with the head box.

In some embodiments, the accepts outlet of the secondary pressure screen is in communication with the slurry inlet of the fan pump.

In some embodiments, the face flow system for grey coated white board further comprises a lining pressure screen connected with the tailings outlet of the four-stage slag remover.

In some embodiments, a fourth valve is disposed between the four-stage cleaner and the lining press screen.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a flow system of a surface layer for grey-coated white board paper in the prior art.

FIG. 2 is a schematic structural diagram of a surface layer flow system for grey-coated white board paper.

Description of reference numerals:

a pulp supply system 10, a sizing pump 20, a deslagging system 30, a first-stage deslagging pump 31, a first-stage deslagging 32, a second-stage deslagging pump 33, a second-stage deslagging 34, a third-stage deslagging pump 35, a third-stage deslagging 36, a fourth-stage deslagging pump 37, a fourth-stage deslagging 38, a fan pump 40, a pressure screen system 50, a first-stage pressure screen 51, a second-stage pressure screen 53, a second-stage pressure screen 55, a head box 60, a bypass 70, a bypass valve 71, a lining pressure screen 80, a first valve 91, a second valve 93, a third valve 95 and a fourth valve 97.

Detailed Description

In order to explain the technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Please refer to fig. 2, the utility model provides a grey primary coat cloth is surface course approach flow system for white board, including supplying thick liquid system 10, the sizing pump 20, deslagging system 30, fan pump 40, pressurized screen system 50, head box 60, supply thick liquid system 10 to provide the surface course thick liquids, the discharge gate that supplies thick liquid system 10 communicates with the feed inlet of sizing pump 20, the discharge gate of sizing pump 20 communicates the feed inlet of deslagging system 30, the good thick liquid discharge gate of deslagging system 30 communicates fan pump 40, the discharge gate of fan pump 40 communicates the feed inlet of pressurized screen system 50, the good thick liquid discharge gate of pressurized screen system 50 communicates head box 60, the discharge gate of sizing pump 20 passes through the feed inlet of bypass 70 intercommunication fan pump 40, be equipped with bypass valve 71 on the bypass 70, be equipped with first valve 91 between sizing pump 20 and the deslagging system 30.

In this technical scheme, the utility model discloses a grey primary coat cloth is surface course drifting system for white board paper, when adopting 100% white wood thick liquid as grey primary coat cloth white board paper surface course raw materials, close first valve 91, open bypass valve 71, the surface course thick liquid that supplies thick liquid system 10 to provide is sent into fan pump 40 through bypass 70 with the help of sizing pump 20, send into pressure screen system 50 after fan pump 40 handles, good thick liquid after pressure screen system 50 sieves the processing flows into head box 60 from good thick liquid discharge gate, standby, this in-process stops deslagging system 30 work, need not the power consumption, and because of white wood thick liquid is almost free of impurity, do not influence paper products quality; when 100% office waste paper deinking pulp (85 ℃) is adopted as a surface layer raw material of the grey-base coated white board, the first valve 91 is opened, the bypass valve 71 is closed, the surface layer pulp provided by the pulp supply system 10 is fed into the deslagging system 30 by means of the sizing pump 20, impurities are removed by the deslagging system 30, the good pulp flows into the fan pump 40 from a good pulp discharge port of the deslagging system 30, the good pulp is treated by the fan pump 40 and then fed into the pressure screen system 50, the good pulp screened by the pressure screen system 50 flows into the pulp flow box 60 from a good pulp discharge port for standby, the deslagging system 30 is started to work in the process, impurities of the office waste paper deinking pulp can be removed, the quality of the paper product is improved, the paper product can be started/stopped on line without stopping, the operation is convenient, and the production efficiency is improved.

Referring to fig. 2, in a preferred embodiment, the deslagging system 30 includes a first-stage deslagging pump 31, a first-stage deslagging pump 32, a second-stage deslagging pump 33, a second-stage deslagging pump 34, a third-stage deslagging pump 35, a third-stage deslagging pump 36, a fourth-stage deslagging pump 37, and a fourth-stage deslagging pump 38, which are connected in sequence, the first valve 91 is disposed between the first-stage deslagging pump 31 and the first-stage deslagging pump 32, and a good pulp discharge port of the first-stage deslagging pump 32 is communicated with the fan pump 40, so that a deslagging cycle is formed by performing four-stage deslagging on the pulp, thereby improving a deslagging effect and reducing fiber loss. Further, a second valve 93 is arranged between the first-stage slag remover 32 and the fan pump 40, and whether good pulp discharged from the first-stage slag remover 32 flows into the fan pump 40 or not can be controlled through the second valve 93, so that the inspection and maintenance are convenient, and the control is more convenient.

With continued reference to fig. 2, in a preferred embodiment, the accepted pulp outlet of the second-stage scummer 34 is connected to the inlet of the first-stage scummer pump 31, and a third valve 95 is disposed between the second-stage scummer 34 and the first-stage scummer pump 31, and after the tailings of the first-stage scummer 32 are further processed by the second-stage scummer 34, the accepted pulp discharged therefrom can enter the first-stage scummer 32 for further impurity removal, and then the accepted pulp enters the fan pump 40 to form a scummer cycle, thereby improving the scummer effect and reducing the fiber loss. Simultaneously, be equipped with third valve 95 between two-stage process scummer 34 and one-stage scummer pump 31, whether the good thick liquid of steerable two-stage process scummer 34 exhaust flows into one-stage scummer pump 31 through third valve 95, and the inspection machine maintenance of being convenient for, and it is more convenient to control.

With continued reference to fig. 2, in a preferred embodiment, the accept outlet of the three-stage cleaner 36 is connected to the inlet of the two-stage cleaner pump 33, the accept treated by the three-stage cleaner 36 flows into the two-stage cleaner 34 for circulation, and the tailings treated by the three-stage cleaner 36 flows into the four-stage cleaner 38. Further, a good pulp discharge port of the four-section slag separator 38 is communicated with a feed port of the three-section slag separator 36, and the good pulp treated by the four-section slag separator 38 flows into the three-section slag separator 36 for circular treatment, so that slag removal circulation is formed, the slag removal effect is improved, and fiber loss is reduced. Furthermore, the tailings outlet of the four-section slag separator 38 is communicated with the lining pressure screen 80, the tailings treated by the four-section slag separator 38 flow into the lining pressure screen 80, and the good pulp treated by the lining pressure screen 80 can be used for manufacturing the lining, so that the utilization rate of raw materials is improved, and the cost is reduced. In a preferred embodiment, a fourth valve 97 is arranged between the four-section slag separator 38 and the lining pressure screen 80, and whether tailings discharged from the four-section slag separator 38 flow into the lining pressure screen 80 can be controlled through the fourth valve 97, so that the inspection and maintenance are convenient, and the operation is more convenient. In some embodiments, tailings screened by the pressure screen system 50 also flow into the liner pressure screen 80.

With continued reference to fig. 2, the pressure screen system 50 includes a first pressure screen 51, a second pressure screen pump 53 and a second pressure screen 55 connected in sequence, wherein the feed inlet of the first pressure screen 51 is connected to the fan pump 40, and the accept outlet of the first pressure screen 51 is connected to the headbox 60. Further, the accept outlet of the second stage pressure screen 55 is connected to the inlet of the fan pump 40. Tailings screened out by the first-stage pressure screen 51 are pumped into a second-stage pressure screen 55 through a second-stage pressure screen pump 53, the second-stage pressure screen 55 is further subjected to screening treatment, and good pulp screened out by the second-stage pressure screen 55 is continuously fed into the first-stage pressure screen 51 under the action of the fan pump 40 for circular treatment, so that the loss of the pulp can be reduced to the greatest extent, the surface layer pulp is fully utilized, and the maximum economy is realized.

The working principle of the surface course approach system for grey coated white board paper of the present invention is described in detail with reference to fig. 2.

When 100% white wood pulp is used as the raw material of the grey priming coating cloth white board paper surface layer, the first valve 91, the second valve 93, the third valve 95 and the fourth valve 97 are closed, the deslagging system 30 stops working, the bypass valve 71 is opened, the surface layer pulp provided by the pulp supply system 10 is fed into the fan pump 40 through the bypass 70 by the aid of the sizing pump 20, is fed into the section of pressure screen 51 after being treated by the fan pump 40, and the good pulp screened out by the section of pressure screen 51 flows into the pulp flowing box 60 to be collected for preparing the surface layer; pumping tailings screened out by the first-stage pressure screen 51 into a second-stage pressure screen 55 through a second-stage pressure screen pump 53, further screening by the second-stage pressure screen 55, continuously feeding the good pulp screened out by the second-stage pressure screen 55 into the first-stage pressure screen 51 under the action of the fan pump 40 for circular treatment, and feeding tailings screened out by the second-stage pressure screen 55 into a lining pressure screen 80 for lining preparation for continuous use;

when 100% office waste paper deinking pulp (85 ℃) is adopted as a surface layer raw material of the grey primary coated white board, a first valve 91, a second valve 93, a third valve 95 and a fourth valve 97 are opened, a deslagging system 30 is started to work, a bypass valve 71 is closed, the surface layer pulp provided by a pulp supply system 10 is sent to a first-section deslagging pump 31 by a sizing pump 20, the first-section deslagging pump 31 pumps the pulp into a first-section deslagging device 32, the good pulp treated by the first-section deslagging device 32 is sent to a fan pump 40, the good pulp treated by the fan pump 40 is sent to a first-section pressure screen 51, the good pulp screened by the first-section pressure screen 51 flows into a pulp flowing box 60 to be collected, and is used for preparing the surface layer; tailings treated by the first-stage slag remover 32 are pumped into a second-stage slag remover 34 through a second-stage slag remover pump 33, good pulp treated by the second-stage slag remover 34 is sent into a first-stage slag remover pump 31, tailings treated by the second-stage slag remover 34 are sent into a third-stage slag remover 36 through a third-stage slag remover pump 35, good pulp treated by the third-stage slag remover 36 is sent into the second-stage slag remover pump 33, tailings treated by the third-stage slag remover 36 are sent into a fourth-stage slag remover 38 through a fourth-stage slag remover pump 37, good pulp treated by the fourth-stage slag remover 38 is sent into the third-stage slag remover 36, and tailings treated by the fourth-stage slag remover 38 are sent into a lining pressure screen 80 for lining preparation and continuous use.

The above disclosure is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and the equivalent changes made by the claims of the present invention are all covered by the present invention.

Claims (10)

1. The utility model provides a grey primary coat cloth is surface course drifting system for white board, a serial communication port, including supplying thick liquid system, starching pump, deslagging system, fan pump, pressurized screen system, head box, supply thick liquid system to provide the surface course thick liquids, supply the discharge gate of thick liquid system with the feed inlet intercommunication of starching pump, the discharge gate intercommunication of starching pump the feed inlet of deslagging system, the good thick liquid discharge gate intercommunication of deslagging system the fan pump, the discharge gate intercommunication of fan pump the feed inlet of pressurized screen system, the good thick liquid discharge gate intercommunication of pressurized screen system the head box, the discharge gate of starching pump passes through the bypass intercommunication the feed inlet of fan pump, be equipped with the bypass valve on the bypass, the starching pump with be equipped with first valve between the deslagging system.

2. The surface layer flow conveying system for grey priming cloth white board paper according to claim 1, wherein the deslagging system comprises a first-stage deslagging device pump, a first-stage deslagging device, a second-stage deslagging device pump, a second-stage deslagging device, a third-stage deslagging device pump, a third-stage deslagging device, a fourth-stage deslagging device pump and a fourth-stage deslagging device which are sequentially connected, the first valve is arranged between the first-stage deslagging device pump and the first-stage deslagging device, and a good pulp discharge hole of the first-stage deslagging device is communicated with the fan pump.

3. The surface course drifting system for grey priming coated white board of claim 2, characterized in that a second valve is arranged between the first-stage slag remover and the fan pump.

4. The surface course approach flow system for grey-coated white board paper according to claim 2, characterized in that the good pulp discharge port of the second-stage scummer is communicated with the feed port of the first-stage scummer pump, and a third valve is arranged between the second-stage scummer and the first-stage scummer pump.

5. The surface course drifting system for grey priming coated white board paper of claim 2, characterized in that the good pulp discharge port of the three-section slag separator is communicated with the feed port of the two-section slag separator pump.

6. The surface course approach flow system for grey priming coated white board paper according to claim 2, characterized in that the good pulp discharge port of the four-section slag separator is communicated with the feed port of the three-section slag separator.

7. The surface course drifting system for grey priming cloth white board of claim 1, characterized in that, the pressurized screen system includes one section pressurized screen, two sections pressurized screen pump and two sections pressurized screen that connect gradually, the feed inlet of one section pressurized screen with the fan pump intercommunication, the good thick liquid discharge gate of one section pressurized screen with the head box.

8. The surface course drifting system for grey priming coated white board paper of claim 7, characterized in that the accept discharge port of the two-stage pressure screen is communicated with the feed port of the fan pump.

9. The ash-based coated white board face feed system of claim 2, further comprising a lining press screen connected to the tailings outlet of the four-stage cleaner.

10. The ash-based coated white board surface flow system according to claim 9, wherein a fourth valve is provided between the four-stage cleaner and the lining press screen.

Images