CN216615297U

CN216615297U - Fiber pulping production system

Info

Publication number: CN216615297U
Application number: CN202122864829.4U
Authority: CN
Inventors: 卢耀权; 张锦坤; 陈太军
Original assignee: Sichuan Jintian Paper Co ltd
Current assignee: Sichuan Jintian Paper Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-27
Anticipated expiration: 2031-11-22

Abstract

A fiber pulping production system relates to the technical field of papermaking pulping, and adopts the technical scheme that the fiber pulping production system comprises a good pulp treatment system and a residue pulp treatment system, wherein the good pulp treatment system comprises a raw material conveyor, a hydrapulper, a first pulp storage tank, a high-concentration desander, a coarse screen, a second pulp storage tank, a first-section desander, a fine screen, an inclined screen thickener, a third pulp storage tank, a double-disc mill and a pulping tank; the slag pulp treatment system comprises a slag pulp tank, a first-stage slag pulp tank, a first white water tank, a high-level tank, a screw press, a cold mill, a second-stage desander, a second pulp storage tank and a second white water tank. The utility model removes impurities with different particle sizes in the bamboo and wood fiber raw materials by various grading devices such as a coarse screen, a fine screen, a sand remover and the like, simultaneously grades the fibers in the pulp according to the length, and treats the fibers with different lengths by adopting different mills, so that the fibers contained in the obtained pulp have uniform length and good production effect, and no wastewater is discharged in the pulping process, thereby being beneficial to environmental protection.

Description

Fiber pulping production system

Technical Field

The utility model relates to the technical field of papermaking pulping, in particular to a fiber pulping production system.

Background

With the shortage of papermaking fiber raw materials, the price of the papermaking fiber raw materials is continuously increased, and some bamboo and wood industry processing factories with resources such as bamboo, wood and the like have profit margins caused by the increase of the papermaking fiber raw materials, and utilize the resource advantages of the factories to produce bamboo fibers, wood fibers and other non-wood fibers, so as to supply the bamboo fibers, the wood fibers and other non-wood fibers to the papermaking industry for papermaking production. Due to the limitation of production conditions, bamboo fibers, wood fibers and other non-wood fibers produced by processing plants in the bamboo and wood industries contain a large amount of impurities such as crude fibers, fiber bundles, gravels and the like, and can be used for papermaking production only after being treated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fiber pulping production system, aiming at the problem that bamboo and wood fiber raw materials contain a large amount of impurities in the prior art.

The utility model provides the following technical scheme: a fiber pulping production system comprises a good pulp treatment system and a residue pulp treatment system, wherein the good pulp treatment system comprises a raw material conveyor, the output end of the raw material conveyor is connected with a hydrapulper, an outlet pipeline of the hydrapulper is sequentially connected with a first pulp storage tank and a high-concentration desander, a pulp outlet pipeline of the high-concentration desander is connected with a coarse screen, a good pulp outlet pipeline of the coarse screen is connected with a second pulp storage tank and a first section of desander, a good pulp outlet pipeline of the first section of desander is connected to a fine screen, a good pulp outlet pipeline of the fine screen is connected to an inclined screen thickener, and a good pulp outlet pipeline of the inclined screen thickener is sequentially connected with a third pulp storage tank, a double-disc mill and a pulping tank; the slag pulp processing system comprises a slag pulp tank connected with slag pulp outlet pipelines of the coarse screen and the fine screen, a section of slag pulp tank connected with the slag pulp outlet pipeline of the first sand remover, and a first white water tank connected with a white water outlet pipeline of the inclined wire thickener, the residue slurry pool is sequentially connected with a high-level box and a screw press through pipelines, a good slurry outlet pipeline of the screw press is connected to a cold mill, the white water outlet conduit of the screw press is connected to the hydropulper, the outlet conduit of the cold mill is connected to the second stock chest, the first-section slurry tank is connected with a second-section desander through a pipeline, a good slurry outlet pipeline of the second-section desander is connected with the second slurry storage tank, the white water outlet pipe of the secondary desander is connected to a second white water pool, and the first white water pool and the second white water pool are both connected to the hydrapulper through pipes.

Preferably, the first white water pool is further connected to the high-level tank through a pipeline, and valves are arranged on the pipelines between the first white water pool and the high-level tank and between the first white water pool and the hydrapulper.

Preferably, the outlets of the hydrapulper, the first pulp storage tank, the second pulp storage tank, the pulp tank, the first-stage pulp tank, the first white water tank, the second white water tank, the third pulp storage tank and the pulp forming tank are provided with conveying pumps.

Preferably, the first pulp storage tank, the second pulp storage tank, the pulp slurry tank, the first white water tank, the third pulp storage tank and the pulp forming tank are all provided with a stirrer.

Preferably, the raw material conveyor is a chain scraper conveyor.

The utility model has the beneficial effects that: through multiple classification equipment such as coarse screening, fine screening, desander detach the unequal impurity of granularity in the bamboo wood fiber raw materials, grade the fibre in the thick liquids according to length simultaneously to adopt different mills to handle the fibre of length difference, the fibre length that contains in the thick liquids that makes and obtain is comparatively even, and production effect is good, and the pulping process does not have waste water discharge simultaneously, does benefit to environmental protection.

Drawings

FIG. 1 is a diagram of a device connection according to an embodiment of the present invention.

Reference numerals: 1-fiber raw material, 2-raw material conveyor, 3-hydrapulper, 4-first stock chest, 5-high concentration desander, 6-coarse screen, 7-second stock chest, 8-first segment desander, 9-fine screen, 10-inclined wire thickener, 11-third stock chest, 12-double disc mill, 13-pulping chest, 14-slag chest, 15-high box, 16-screw press, 17-cold mill, 18-first segment slag chest, 19-second segment desander, 20-second white water chest, 21-first white water chest.

Detailed Description

The embodiments of the present invention will be described in more detail with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments of the present invention after studying the specification. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The utility model provides a fiber pulping production system as shown in figure 1, which comprises an improved pulp treatment system and a residue pulp treatment system, wherein the improved pulp treatment system comprises a raw material conveyor 2, the output end of the raw material conveyor 2 is connected with a hydrapulper 3, the outlet pipeline of the hydrapulper 3 is sequentially connected with a first pulp storage tank 4 and a high-concentration desander 5, the pulp outlet pipeline of the high-concentration desander 5 is connected with a coarse screen 6, the improved pulp outlet pipeline of the coarse screen 6 is connected with a second pulp storage tank 7 and a first section of desander 8, the improved pulp outlet pipeline of the first section of desander 8 is connected with a fine screen 9, the improved pulp outlet pipeline of the fine screen 9 is connected with an inclined screen thickener 10, and the improved pulp outlet pipeline of the inclined screen thickener 10 is sequentially connected with a third pulp storage tank 11, a double disc mill 12 and a pulping tank 13; the slag pulp processing system comprises a slag pulp pool 14 connected with slag pulp outlet pipelines of the coarse screen 6 and the fine screen 9, a first-stage slag pulp pool 18 connected with a slag pulp outlet pipeline of the first-stage desander 8, and a first white water pool 21 connected with a white water outlet pipeline of the inclined wire thickener, wherein the slag pulp pool 14 is sequentially connected with a head tank 15 and a screw press 16 through pipelines, a good pulp outlet pipeline of the screw press is connected to a cold mill 17, a white water outlet pipeline of the screw press 16 is connected to the hydrapulper 3, an outlet pipeline of the cold mill 17 is connected to the second pulp storage pool 7, the first-stage slag pulp pool 18 is connected with a second-stage desander 19 through a pipeline, a good pulp outlet pipeline of the second-stage desander 19 is connected to the second pulp storage pool 7, a white water outlet pipeline of the second-stage desander 19 is connected to a second white water pool 20, both the first and second white water pools are connected to the hydropulper 3 through pipes.

When the pulp machine is used, firstly, the bamboo and wood fiber raw materials 1 are conveyed into the hydrapulper 3 through the raw material conveyor 2, the raw materials are crushed in the hydrapulper 3 to form pulp, then the pulp is conveyed into the first pulp storage tank 4 for buffering, and the first pulp storage tank 4 keeps a certain liquid level to ensure that the flow of the pulp conveyed to the subsequent flow is continuous and stable. The paper pulp in the first pulp storage tank 4 is conveyed to the high-concentration desander 5 for primary classification, impurities such as sand and stones with larger particle sizes are discharged from the slag discharge port, the paper pulp enters the coarse screen 6 for secondary classification, large coarse slag such as coarse fibers and fiber bundles enters the pulp storage tank 14, and good pulp enters the second pulp storage tank 7. The paper pulp in the second pulp storage tank 7 is buffered and then conveyed to a first-stage desander 8, a fine screen 9 and an inclined wire thickener 10 to be sequentially subjected to third classification, fourth classification and concentration to obtain two parts of paper pulp and white water, the paper pulp enters a third pulp storage tank 11 to be buffered, the white water enters a first white water tank 21, the paper pulp in the third pulp storage tank 11 is conveyed to a double-disc mill 12 to be pulped, then conveyed to a pulp forming tank 13 to wait for pulp proportioning, and the low-concentration paper pulp in the first white water tank 21 returns to the hydrapulper 3. The impurity-containing slurry obtained through the third grading of the primary desander 8 enters the primary slurry tank 18 to be buffered and then is conveyed to the secondary desander 19 to be graded for the fifth time, the good slurry obtained through the fifth grading returns to the second slurry storage tank 7, and the slurry enters the second white water tank 20 to be buffered and then returns to the hydrapulper 3, so that the utilization rate of the slurry is improved. The slag pulp obtained after the fourth grading by the fine screen 9 enters a slag pulp tank 14, is conveyed to a high-level box 15, automatically flows into a screw press 16 to be concentrated, the concentrated slag pulp automatically flows into a cold mill 17, and white water enters a hydrapulper 3; the cold mill 17 grinds the pulp and then automatically flows into the second pulp storage tank 7.

Preferably, the first white water pool 21 is further connected to the high level box 15 through a pipe, and valves are disposed on the pipes between the first white water pool 21 and the high level box 15 and between the hydrapulper 3, so that the flow direction of the pulp can be adjusted according to the concentration of the pulp in the first white water pool. When the concentration of the pulp in the first white water pool is higher, the first white water pool can be communicated with the high-level tank, and when the concentration of the pulp in the first white water pool is lower, the pulp is directly returned to the hydrapulper.

Preferably, the outlets of the hydrapulper 3, the first stock chest 4, the second stock chest 7, the pulp chest 14, the first-stage pulp chest 18, the first white water chest 21, the second white water chest 20, the third stock chest 11 and the machine chest 13 are all provided with a delivery pump for providing pressure for the delivery of pulp, and other pipelines without delivery pumps can generally provide pulp self-flow.

Preferably, agitators are arranged in the first stock chest 4, the second stock chest 7, the slurry tank 14, the first white water tank 21, the third stock chest 11 and the slurry forming tank 13 to prevent slurry from depositing.

Preferably, the raw material conveyor 2 is a chain scraper conveyor.

The foregoing is a detailed description of one or more embodiments of the utility model, which is set forth in more detail and is not intended to limit the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the spirit of the utility model, which falls within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a fiber pulping production system, includes good thick liquid processing system and sediment thick liquid processing system, its characterized in that: the fine pulp processing system comprises a raw material conveyor (2), the output end of the raw material conveyor (2) is connected with a hydraulic pulper (3), an outlet pipeline of the hydraulic pulper (3) is sequentially connected with a first pulp storage tank (4) and a high-concentration desander (5), a pulp outlet pipeline of the high-concentration desander (5) is connected with a coarse screen (6), a fine pulp outlet pipeline of the coarse screen (6) is connected with a second pulp storage tank (7) and a section of desander (8), a fine pulp outlet pipeline of the section of desander (8) is connected to a fine screen (9), a fine pulp outlet pipeline of the fine screen (9) is connected to an inclined screen thickener (10), and a fine pulp outlet pipeline of the inclined screen thickener (10) is sequentially connected with a third pulp storage tank (11), a double disc mill (12) and a pulp forming tank (13); the slag pulp processing system comprises a slag pulp pool (14) connected with slag pulp outlet pipelines of the coarse screen (6) and the fine screen (9), a first-section slag pulp pool (18) connected with a slag pulp outlet pipeline of the first-section desander (8), and a first white water pool (21) connected with a white water outlet pipeline of the inclined wire thickener, wherein the slag pulp pool (14) is sequentially connected with a head tank (15) and a screw press (16) through pipelines, a good pulp outlet pipeline of the screw press (16) is connected to a cold mill (17), a white water outlet pipeline of the screw press (16) is connected to the hydrapulper (3), an outlet pipeline of the cold mill (17) is connected to the second pulp storage pool (7), the first-section slag pulp pool (18) is connected with a second-section desander (19) through a pipeline, and a good pulp outlet pipeline of the second-section desander (19) is connected to the second pulp storage pool (7), the white water outlet conduit of the secondary desander (19) is connected to a second white water basin (20), and the first white water basin and the second white water basin are both connected to the hydrapulper (3) through conduits.

2. A fiber pulping production system according to claim 1, wherein: the first white water pool (21) is also connected to the high-level tank (15) through a pipeline, and valves are arranged on the pipelines between the first white water pool (21) and the high-level tank (15) as well as between the first white water pool and the hydrapulper (3).

3. A fiber pulping production system according to claim 1, wherein: and the outlets of the hydrapulper (3), the first pulp storage tank (4), the second pulp storage tank (7), the pulp tank (14), the first section of pulp tank (18), the first white water tank (21), the second white water tank (20), the third pulp storage tank (11) and the pulp forming tank (13) are provided with conveying pumps.

4. A fiber pulping production system according to claim 1, wherein: stirrers are arranged in the first pulp storage tank (4), the second pulp storage tank (7), the pulp slurry tank (14), the first white water tank (21), the third pulp storage tank (11) and the pulp forming tank (13).

5. A fiber pulping production system according to claim 1, wherein: the raw material conveyor (2) is a chain plate conveyor.