CN211947692U - Pulping system of gypsum mask paper - Google Patents
Pulping system of gypsum mask paper Download PDFInfo
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- CN211947692U CN211947692U CN202020274552.2U CN202020274552U CN211947692U CN 211947692 U CN211947692 U CN 211947692U CN 202020274552 U CN202020274552 U CN 202020274552U CN 211947692 U CN211947692 U CN 211947692U
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Abstract
The utility model discloses a slurrying system of gypsum mask paper relates to papermaking technical field, and its technical scheme main points are: including the pulper, scummer, the thick liquid tower that connect gradually with the pipeline, the pulper is equipped with the feed inlet, with the pulping space of feed inlet intercommunication, still includes the dryer, the dryer has steam inlet, steam outlet, steam inlet is used for communicateing the steam source, steam outlet intercommunication has the heating pipe, the heating pipe passes the pulper and passes the pulping space. The drying cylinder is provided with a plurality of drying cylinders, steam outlets and steam inlets of the adjacent drying cylinders are connected in series through steam pipes, and the heating pipes are connected to the last drying cylinder far away from a steam source. The pulping system can ensure that various waste papers can be crushed by improving the water temperature in the pulping machine, thereby improving the fiber yield; this slurrying system recycles the waste heat in the steam through carrying out reuse to the used steam of dryer, has energy-conserving effect.
Description
Technical Field
The utility model relates to a papermaking technology field, in particular to slurrying system of gypsum mask paper.
Background
The gypsum mask paper is the mask paper of the gypsum board and is the surface layer structure of the gypsum board. The paper-surface gypsum board is mainly made of building gypsum, proper additives and fibers are added to the building gypsum to make a board core, and paper is used as a board of a protective layer.
The prior Chinese patent with the publication number of CN106638110B discloses a production process of high-whiteness gypsum board mask paper, which comprises the following steps: pulping, wherein the pulping comprises a deinking pulp production line and an OCC production line which are respectively used for producing deinking pulp and OCC (OCC is waste and old cardboard paper), the gypsum board mask paper is formed by compounding four layers of nets, the four layers of pulp are sprayed onto the four layers of forming nets through a head box, and the four layers of pulp are subjected to vacuum squeezing, pre-drying, surface sizing, post-drying and coiling and are finally rewound into paper rolls through a rewinder. Most of the core layer and bottom layer raw materials of the gypsum mask paper are derived from waste paper.
The above prior art solutions have the following drawbacks: the first step of the process after the wastepaper enters the system is a pulper, which is currently used in a multi-purpose pulper, to break the wastepaper into a fiber-rich pulp. When the pulper works, some high-strength waste paper is difficult to be pulped in the rotary drum and can be removed together with impurities, and the defects of high fiber loss exist.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a pulping system of gypsum mask paper, the waste paper of high strength changes in softening and fluffing to ensure that all kinds of waste paper homoenergetic accomplish the disintegration.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a pulping system of gypsum mask paper, includes pulper, scummer, the thick liquid tower that connects gradually with the pipeline, the pulper is equipped with the feed inlet, with the pulping space of feed inlet intercommunication, still includes the dryer, the dryer has steam inlet, steam outlet, steam inlet is used for communicating the steam source, steam outlet intercommunication has the heating pipe, the heating pipe passes the pulper and passes the pulping space.
Through the technical scheme, when the pulping system operates, steam passes through the heating pipe after passing through the drying cylinder, and the heat of the steam is transferred to water in the pulping space through the heating pipe, so that the water temperature of the pulping space is improved. After the water temperature in the pulping space rises, the high-strength waste paper is easier to soften and defiber, thereby ensuring that various waste papers can be crushed. This slurrying system recycles the waste heat in the steam through carrying out reuse to the used steam of dryer, has energy-conserving effect.
Preferably, the heating pipe enters and exits the pulping space from the feed inlet.
Through above-mentioned technical scheme, the setting of heating pipe need not reform transform the pulper, and the motion of pulper also can not transmit to the heating pipe.
Preferably, the pulper is a drum pulper.
Through the technical scheme, the kneading and friction motions of the drum pulper are soft, so that the fibers of the waste paper can be fully lubricated, expanded and separated, the strength and the length of the fibers of the waste paper are fully reserved, and the pulp yield is improved.
Preferably, a plurality of drying cylinders are arranged, steam outlets and steam inlets of adjacent drying cylinders are connected in series through steam pipes, and the heating pipes are connected to the last drying cylinder far away from a steam source.
Through the technical scheme, the steam from the steam source is high-temperature steam, and the temperature of the steam is gradually reduced to 50-65 ℃ after the steam passes through the plurality of drying cylinders, and the temperature is suitable for heating water in the pulping machine.
Preferably, the heating device further comprises a water tank for containing water, and the heating pipe penetrates through the water tank.
By the technical scheme, if the temperature of the steam passing through the drying cylinder is still too high, water is partially overflowed through the heating pipe after the water tank contains water; personnel can further reduce the steam temperature in the heating pipe through the basin, makes the steam temperature in the heating pipe be in appropriate range.
Preferably, the water tank is connected with a water inlet pipe, the water inlet pipe is used for being connected with a water source, and a water inlet valve is arranged on the water inlet pipe; the water tank is externally connected with a water outlet pipe, the water outlet pipe is communicated with the inner bottom of the water tank, and a water outlet valve is arranged on the water outlet pipe.
Through the technical scheme, after the water inlet pipe is communicated with a continuous water source, personnel can enable the water inlet quantity of the water tank to be equal to the water outlet quantity by controlling the opening degrees of the water inlet valve and the water outlet valve, so that the water level of the water tank is maintained at a fixed height; meanwhile, as the water in the water tank is continuously changed, the water temperature in the water tank is not easy to rise, and the cooling effect is continuously achieved.
Preferably, the bottom of the water tank is a plane, the plane is along the horizontal direction, and the heating pipe penetrates through the water tank along the horizontal direction.
Through the technical scheme, as the water level in the water tank rises, the contact area of water and the heating pipe is gradually increased, and finally the water can completely overflow the heating pipe; the arrangement is convenient for personnel to control the cooling efficiency of the heating pipe in the water tank.
Preferably, the heating pipe is bent in multiple sections or is spiral in the pulping space.
Through above-mentioned technical scheme, can increase the area of contact of heating pipe and shredded pulp space water, improve the heat exchange efficiency of heating pipe and shredded pulp space water.
To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:
1. the water temperature in the pulper is increased, so that various waste papers can be crushed;
2. the pulping system has the energy-saving effect by recycling the steam used by the drying cylinder;
3. personnel can control the temperature of the heating pipe, so that the water temperature in the pulping space is in a proper range.
Drawings
FIG. 1 is a system diagram of a pulping system of gypsum liner paper of an embodiment;
fig. 2 is an internal schematic view of the pulper of the embodiment.
In the figure, 1, a drying cylinder; 2. a water tank; 3. a pulper; 4. a slag remover; 5. a pulp tower; 11. a steam inlet; 12. a steam outlet; 13. a steam pipe; 6. heating a tube; 21. a water inlet pipe; 211. a water inlet valve; 22. a water outlet pipe; 221. a water outlet valve; 31. a feed inlet; 32. a pulping space.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a pulping system of gypsum mask paper, including the pulper 3, scummer 4, the thick liquid tower 5 that connect gradually with the pipeline, still include dryer 1 and basin 2.
The number of the drying cylinders 1 is multiple, the drying cylinders 1 are used for drying manufactured paper, the paper is attached to the surfaces of the drying cylinders 1 to move, and the drying cylinders 1 rotate to dry the paper. The drying cylinder 1 is a common apparatus in a paper mill, and the heat of the drying cylinder 1 comes from steam which can be supplied by the mill or an external factory. The drying cylinder 1 is provided with a steam inlet 11 and a steam outlet 12, the steam inlet 11 and the steam outlet 12 are respectively positioned at two ends of the drying cylinder 1, the steam outlet 12 and the steam inlet 11 of the adjacent drying cylinder 1 are connected in series through a steam pipe 13, wherein the steam inlet 11 of the drying cylinder 1 at the starting end is communicated with a steam source, and the steam outlet 12 of the last drying cylinder 1 is connected with a heating pipe 6. The heat of the steam is gradually consumed in the drying cylinder 1 along with the flow of the steam in the drying cylinder 1 and the steam pipe 13, wherein the drying cylinder 1 close to the steam source is a high-temperature section, and the drying cylinder 1 far away from the steam source is a low-temperature section.
The water tank 2 is a rectangular container with an open top, and the water tank 2 is used for containing water. The water tank 2 is connected with a water inlet pipe 21, the water inlet pipe 21 is used for connecting with a water source, such as tap water, and a water inlet valve 211 is arranged on the water inlet pipe 21. The water tank 2 is externally connected with a water outlet pipe 22, the water outlet pipe 22 is communicated with the inner bottom of the water tank 2, and the water outlet pipe 22 is provided with a water outlet valve 221. The bottom of the water tank 2 is a plane, the plane is along the horizontal direction, the heating pipe 6 penetrates through the water tank 2 along the horizontal direction, specifically penetrates through one side wall of the water tank 2 and penetrates out of the other side wall, and the outer pipe wall of the heating pipe 6 is welded and fixed with the side wall of the water tank 2. Depending on the water storage capacity in the water tank 2, the water can partially flow over the heating pipes 6 and can completely submerge the heating pipes 6 in the water tank 2.
Referring to fig. 2, the pulper 3 is specifically a drum pulper, and the kneading and friction motions of the drum pulper 3 are soft, so that the fibers of the waste paper can be fully separated by swelling, the strength and the length of the fibers of the waste paper are fully reserved, and the pulp yield is improved. The pulper 3 is provided with a feed port 31 and a pulp crushing space 32 communicating with the feed port 31, the pulp crushing space 32 is a space for crushing the used paper, and water is contained in the pulp crushing space 32. The waste paper enters the pulping system from a feed inlet 31 of the pulper 3, and pulp discharged from the pulper 3 is subjected to deslagging by a deslagging device 4 and then is sent to a pulp tower 5 (namely a white water tower) for pulping and storage. The slag remover 4 of the present embodiment uses a high concentration slag remover.
The heating pipe 6 passes through the pulper 3 and through the pulping space 32, and the heating pipe 6 enters and exits the pulping space 32 from the feed opening 31, so that the heating pipe 6 is arranged without modifying the pulper 3, and the movement of the pulper 3 is not transmitted to the heating pipe 6. The heating pipe 6 at the feed inlet 31 abuts against the wall of the feed inlet 31 to reduce the obstruction of the feed of used paper. The heating pipe 6 is bent in multiple sections or is spiral in the pulping space 32, and is used for increasing the contact area between the heating pipe 6 and water in the pulping space 32.
When the pulping system is in operation, steam passes through the drying cylinder 1 and then passes through the heating pipe 6, and the heat of the steam is transferred to water in the pulping space 32 through the heating pipe 6, so that the water temperature of the pulping space 32 is improved. After the temperature of the water in the pulping space 32 rises, the waste paper is more easily softened and defibered, thereby ensuring that various waste papers can be crushed. The pulping system recycles the steam used by the drying cylinder 1, recovers the waste heat in the steam and has the energy-saving effect.
The steam from the steam source is high-temperature steam, when the temperature of the steam is reduced to 50-65 ℃ after passing through all the drying cylinders 1, the temperature is proper for heating water in the pulper 3, the fiber generated by the waste paper disintegration can be broken due to the overhigh water temperature, and the waste paper disintegration is not facilitated due to the overlow water temperature. Personnel can further control the steam temperature in the heating pipe 6 through the water tank 2, the cold water is continuously introduced into the water inlet pipe 21, and the personnel can enable the water inlet quantity of the water tank 2 to be equal to the water outlet quantity through controlling the opening degrees of the water inlet valve 211 and the water outlet valve 221, so that the water level of the water tank 2 is maintained at a fixed height. The higher the height of the water in the water tank 2 relative to the heating pipe 6 is, the larger the contact area between the water and the heating pipe 6 is, and the better the cooling effect on the steam in the heating pipe 6 is; the water flowing from the outlet pipe 22 is supplied to other equipment within the plant area.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a pulping system of gypsum mask paper, includes pulper (3), scummer (4), thick liquid tower (5) that connect gradually with the pipeline, pulper (3) are equipped with feed inlet (31), with pulping space (32) of feed inlet (31) intercommunication, characterized by: the drying cylinder (1) is further provided with a steam inlet (11) and a steam outlet (12), the steam inlet (11) is communicated with a steam source, the steam outlet (12) is communicated with a heating pipe (6), and the heating pipe (6) penetrates through the pulper (3) and the pulping space (32).
2. The system of claim 1 for pulping gypsum liner paper, wherein: the heating pipe (6) enters and exits the pulping space (32) from the feeding hole (31).
3. The system of claim 2 for pulping gypsum cover paper, wherein: the pulper (3) is a drum pulper (3).
4. The system of claim 1 for pulping gypsum liner paper, wherein: the drying cylinder (1) is provided with a plurality of drying cylinders, steam outlets (12) and steam inlets (11) of the adjacent drying cylinders (1) are connected in series through steam pipes (13), and the heating pipes (6) are connected to the final drying cylinder (1) far away from a steam source.
5. The system of claim 1 for pulping gypsum liner paper, wherein: the water heating device is characterized by further comprising a water tank (2), wherein the water tank (2) is used for containing water, and the heating pipe (6) penetrates through the water tank (2).
6. The system of claim 5 for pulping gypsum liner paper, wherein: the water tank (2) is connected with a water inlet pipe (21), the water inlet pipe (21) is used for being connected with a water source, and a water inlet valve (211) is arranged on the water inlet pipe (21); the water tank (2) is externally connected with a water outlet pipe (22), the water outlet pipe (22) is communicated with the inner bottom of the water tank (2), and a water outlet valve (221) is arranged on the water outlet pipe (22).
7. The system of claim 6 for pulping gypsum liner paper, wherein: the bottom of the water tank (2) is a plane, the plane is along the horizontal direction, and the heating pipe (6) penetrates through the water tank (2) along the horizontal direction.
8. The system of claim 1 for pulping gypsum liner paper, wherein: the heating pipe (6) is in a multi-section bent shape or a spiral shape in the pulping space (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020274552.2U CN211947692U (en) | 2020-03-06 | 2020-03-06 | Pulping system of gypsum mask paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020274552.2U CN211947692U (en) | 2020-03-06 | 2020-03-06 | Pulping system of gypsum mask paper |
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| CN211947692U true CN211947692U (en) | 2020-11-17 |
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| CN202020274552.2U Active CN211947692U (en) | 2020-03-06 | 2020-03-06 | Pulping system of gypsum mask paper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808516A (en) * | 2022-04-15 | 2022-07-29 | 浙江金励环保纸业有限公司 | Energy-saving production line for gray board paper |
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2020
- 2020-03-06 CN CN202020274552.2U patent/CN211947692U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808516A (en) * | 2022-04-15 | 2022-07-29 | 浙江金励环保纸业有限公司 | Energy-saving production line for gray board paper |
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