CN219430378U

CN219430378U - Pulping system capable of improving deslagging efficiency

Info

Publication number: CN219430378U
Application number: CN202320088748.6U
Authority: CN
Inventors: 常永生; 赵长征; 王义兵; 张海建
Original assignee: Shandong Century Sunshine Paper Group Co ltd
Current assignee: Shandong Century Sunshine Paper Group Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-07-28
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a pulping system for improving the deslagging efficiency, which comprises a primary pulper, a secondary pulper and a deslagging device which are sequentially communicated, wherein the primary pulper is connected with the secondary pulper through a pipeline, the secondary pulper is connected with the inlet end of the deslagging device through a first deslagging pipeline and a second deslagging pipeline, and the outlet end of the deslagging device is connected with the secondary pulper through a backflow pipeline; the pipeline between the primary pulper and the secondary pulper is also connected with a white water inlet pipe; the slag discharging device comprises a screen drum which is obliquely arranged, a main shaft is arranged in the screen drum in a penetrating manner, a hollow shaft which is rotationally connected with the main shaft is sleeved on the main shaft, a spiral blade is fixedly connected to the outer part of the hollow shaft, and the spiral blade is positioned in the screen drum. The utility model can solve the problem that the residue of impurities on the wall of the pulper aggravates the deslagging load, and solves the problem that the residue of impurities is adhered to a filter element to influence the deslagging efficiency.

Description

Pulping system capable of improving deslagging efficiency

Technical Field

The utility model relates to a pulping system for improving deslagging efficiency, and belongs to the technical field of pulping devices.

Background

The paper making process is generally divided into pulp and papermaking, wherein pulping comprises pulping, adding, sizing, color mixing, purifying, screening and other series of processing procedures, and papermaking is to make paper on a papermaking machine.

At present, along with the mass use of domestic raw materials and the use of low-price raw materials in each paper mill for further reducing the production cost, more and more impurities in the slurry are caused. In the slurry crushing link, a pulper and a slag discharging device are needed, and the slag discharging device is used for removing various heavy impurities such as metal, sand and the like with larger specific gravity in the slurry so as to purify the slurry.

After one-wave pulping is completed, a plurality of impurity residues can remain on the wall of the pulping machine, and the residual residues can aggravate the subsequent deslagging load and reduce the deslagging efficiency.

The sediment device adopts the filtration mode to arrange sediment more, and the thick liquids get into sediment device back high-speed rotation, and impurity slag is thrown to the wall, discharges under the action of gravity, and the thick liquids pass behind the filter device and are discharged by good thick liquids mouth, and impurity slag in the thick liquids nevertheless easily adheres on the filter device, blocks up the mesh of filter device, influences sediment efficiency.

In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

Aiming at the defects in the background technology, the utility model provides a pulping system for improving the deslagging efficiency, which can solve the problem that the deslagging load is aggravated by impurity residues remained on the wall of a pulper and the problem that the deslagging efficiency is influenced by the adhesion of the impurity residues on a filter element.

In order to solve the technical problems, the utility model adopts the following technical scheme:

promote pulping system of arranging sediment efficiency, including the pulper of once, secondary pulper and the sediment device that communicate in proper order and set up, the pulper passes through the pipe connection with secondary pulper, and secondary pulper passes through the pipeline and is connected its characterized in that with the thick liquid tower:

the secondary pulper is connected with the inlet end of the deslagging device through a first deslagging pipeline and a second deslagging pipeline, and the outlet end of the deslagging device is connected with the secondary pulper through a backflow pipeline; the pipeline between the primary pulper and the secondary pulper is also connected with a white water inlet pipe;

the slag discharging device comprises a screen drum which is obliquely arranged, a main shaft is arranged in the screen drum in a penetrating way, and a hollow shaft which is rotationally connected with the main shaft is sleeved on the main shaft; one end part of the screen cylinder is fixedly connected with the main shaft through a plurality of driving stay bars distributed in a circumferential manner, and the other end part of the screen cylinder is rotationally connected with the hollow shaft through a plurality of driven stay bars distributed in a circumferential manner; the outside of the hollow shaft is fixedly connected with a helical blade which is positioned inside the screen cylinder.

An optimization scheme is that a slag removal pump and a pneumatic valve are arranged on the first slag removal pipeline.

Further, the second slag discharging pipeline is provided with a pneumatic valve, and the inner diameter of the second slag discharging pipeline is larger than that of the first slag discharging pipeline.

Further, a bearing is arranged between the main shaft and the hollow shaft.

Further, the outside of the screen cylinder is provided with a cover body which is fixedly arranged at the top of the frame.

Further, the main shaft is rotatably arranged at the top of the frame, and one end of the main shaft is connected with the motor.

Further, a driven double-row chain wheel is arranged on the outer side of one end of the hollow shaft, and the driven double-row chain wheel is connected with the motor through chain transmission.

Further, an outlet is arranged at the bottom of the cover body and is connected with the secondary pulper through a return pipeline.

Further, a guide plate is arranged below the bottom end of the screen cylinder.

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:

after the pulp in the secondary pulper is discharged, a pneumatic valve on a first slag discharging pipeline is closed, a pneumatic valve on a second slag discharging pipeline is opened, white water enters the secondary pulper from a white water inlet pipe, and residues remained in the secondary pulper are rapidly discharged into a slag discharging device through the second slag discharging pipeline, so that slag discharging load of the subsequent secondary pulper is reduced, and slag discharging efficiency is improved;

slag enters the screen drum to tell rotary separation, and at the same time, the helical blade rotates, and the helical blade carries the slag of screen drum inner wall, prevents slag from blocking the screen drum, influences the sediment efficiency.

The utility model will now be described in detail with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic structural view of the slag removing device;

fig. 3 is a schematic view of the internal structure of the screen cylinder.

In the figure, a 1-primary pulper, a 2-secondary pulper, a 3-deslagging device, a 31-screen drum, a 32-cover body, a 33-rack, a 34-main shaft, a 35-hollow shaft, a 36-driving stay bar, a 37-driven stay bar, a 38-driven double-row chain wheel, 39-spiral blades, a 310-deflector, a 4-pulp tower, a 5-primary deslagging pipeline, a 6-secondary deslagging pipeline, a 7-backflow pipeline and an 8-white water inlet pipe.

Detailed Description

For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.

As shown in fig. 1-3, the utility model provides a pulping system for improving deslagging efficiency, which comprises a primary pulper 1, a secondary pulper 2 and a deslagging device 3 which are sequentially communicated.

The primary pulper 1 and the secondary pulper 2 are connected through a pipeline, the primary pulper 1 realizes primary pulp crushing, and the pulp after primary crushing enters the secondary pulper 2 through a pipeline to realize re-crushing.

The secondary pulper 2 is connected with the pulp tower 4 through a pipeline, a sieve plate is arranged in the secondary pulper 2, and good pulp enters the pulp tower 4 after passing through the sieve plate.

The secondary pulper 2 is connected with the inlet end of the slag discharging device 3 through a first slag discharging pipeline 5 and a second slag discharging pipeline 6, and the outlet end of the slag discharging device 3 is connected with the secondary pulper 2 through a backflow pipeline 7.

The first slag discharging pipeline 5 is provided with a slag removing pump and a pneumatic valve, and residual slag which does not pass through the sieve plate in the secondary pulper 2 is discharged into the slag discharging device 3 through the first slag discharging pipeline 5 for separation treatment.

The second slag discharging pipeline 6 is provided with a pneumatic valve, and the inner diameter of the second slag discharging pipeline 6 is larger than that of the first slag discharging pipeline 5.

The pipeline between the primary pulper 1 and the secondary pulper 2 is also connected with a white water inlet pipe 8.

After the pulp in the secondary pulper 2 is discharged, a pneumatic valve on the first slag discharging pipeline 5 is closed, a pneumatic valve on the second slag discharging pipeline 6 is opened, meanwhile, white water enters the secondary pulper 2 from the white water inlet pipe 8, and residues remained in the secondary pulper 2 are rapidly discharged into the slag discharging device 3 through the second slag discharging pipeline 6, so that the slag discharging load of the subsequent secondary pulper 2 is reduced, and the slag discharging efficiency is improved.

The slag discharging device 3 is used for reprocessing slag, separating slurry doped in the slag, and then, refluxing the slurry into the secondary pulper 2 through a reflux pipeline 7, and discharging the separated slag.

The slag discharging device 3 comprises a screen drum 31 which is obliquely arranged, a cover body 32 is arranged outside the screen drum 31, and the cover body 32 is fixedly arranged at the top of the frame 33.

The inside of the screen drum 31 is penetrated with a main shaft 34, the main shaft 34 is sleeved with a hollow shaft 35 which is rotationally connected with the main shaft 34, and a bearing is arranged between the main shaft 34 and the hollow shaft 35.

The main shaft 34 is rotatably installed at the top of the frame 33, and one end of the main shaft 34 is connected with a motor which provides power for the high-speed rotation of the screen drum 31.

One end of the screen drum 31 is fixedly connected with the main shaft 34 through a plurality of driving supporting rods 36 distributed circumferentially, and the other end of the screen drum 31 is rotatably connected with the hollow shaft 35 through a plurality of driven supporting rods 37 distributed circumferentially.

The outside of hollow shaft 35 fixedly connected with helical blade 39, helical blade 39 is located the inside of sieve section of thick bamboo 31, and helical blade 39 carries the sediment of sieve section of thick bamboo 31 inner wall in the rotation in-process, prevents sediment jam sieve section of thick bamboo 31, influences the sediment efficiency.

The outer side of one end of the hollow shaft 35 is provided with a driven double-row chain wheel 38, the driven double-row chain wheel 38 is connected with a motor through chain transmission, and the motor drives the hollow shaft 35 to further drive the helical blade 39 to rotate.

The speed of hollow shaft 35 is much less than the speed of main shaft 34, and the rotation of the two are complementarily interfered.

An outlet is arranged at the bottom of the cover body 32 and is connected with the secondary pulper 2 through a return pipeline 7.

A deflector 310 is arranged below the bottom end of the screen drum 31, and the deflector 310 is used for guiding out slag.

The specific working principle of the utility model is as follows:

the primary pulper 1 primarily disintegrates paper pulp, the paper pulp after primary disintegration enters the secondary pulper 2 to realize re-disintegration, the re-disintegrated good pulp enters the pulp tower 4 through a sieve plate, slag is lifted to the slag discharging device 3 through the first slag discharging pipeline 5 to be re-treated, the doped pulp in the slag flows back into the secondary pulper 2 through the reflux pipeline 7, and the separated slag is discharged;

after the pulp in the secondary pulper 2 is discharged, a pneumatic valve on the first deslagging pipeline 5 is closed, a pneumatic valve on the second deslagging pipeline 6 is opened, white water enters the secondary pulper 2 from the white water inlet pipe 8, and residues remained in the secondary pulper 2 are rapidly discharged into the deslagging device 3 through the second deslagging pipeline 6, so that deslagging load of the subsequent secondary pulper 2 is reduced, and deslagging efficiency is improved;

slag enters a clamping cavity between the inner wall of the screen drum 31 and the outer wall of the hollow shaft 35, the screen drum 31 separates the slag in the rotating process, and at the same time, the spiral blades 39 rotate to convey the slag on the inner wall of the screen drum 31, so that the slag is prevented from blocking the screen drum 31, and the slag discharging efficiency is prevented from being influenced.

The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.

Claims

1. Promote pulping system of sediment efficiency, including once pulper (1), secondary pulper (2) and sediment device (3) that communicate in proper order and set up, once pulper (1) and secondary pulper (2) pass through the pipe connection, and secondary pulper (2) are connected its characterized in that through pipeline and thick liquid tower (4):

the secondary pulper (2) is connected with the inlet end of the deslagging device (3) through a first deslagging pipeline (5) and a second deslagging pipeline (6), and the outlet end of the deslagging device (3) is connected with the secondary pulper (2) through a backflow pipeline (7); the pipeline between the primary pulper (1) and the secondary pulper (2) is also connected with a white water inlet pipe (8);

the slag discharging device (3) comprises a screen drum (31) which is obliquely arranged, a main shaft (34) is arranged in the screen drum (31) in a penetrating way, and a hollow shaft (35) which is rotationally connected with the main shaft (34) is sleeved on the main shaft; one end part of the screen cylinder (31) is fixedly connected with the main shaft (34) through a plurality of driving supporting rods (36) distributed in a circumferential manner, and the other end part of the screen cylinder (31) is rotationally connected with the hollow shaft (35) through a plurality of driven supporting rods (37) distributed in a circumferential manner; the outside of the hollow shaft (35) is fixedly connected with a helical blade (39), and the helical blade (39) is positioned inside the screen drum (31).

2. The slurry system for improving slag removal efficiency of claim 1, wherein: and the first slag discharging pipeline (5) is provided with a slag removing pump and a pneumatic valve.

3. The slurry system for improving slag removal efficiency of claim 2, wherein: the second slag discharging pipeline (6) is provided with a pneumatic valve, and the inner diameter of the second slag discharging pipeline (6) is larger than that of the first slag discharging pipeline (5).

4. The slurry system for improving slag removal efficiency of claim 1, wherein: a bearing is arranged between the main shaft (34) and the hollow shaft (35).

5. The slurry system for improving slag removal efficiency of claim 1, wherein: the outside of the screen cylinder (31) is provided with a cover body (32), and the cover body (32) is fixedly arranged at the top of the frame (33).

6. The slurry system for improving slag removal efficiency of claim 5, wherein: the main shaft (34) is rotatably arranged at the top of the frame (33), and one end of the main shaft (34) is connected with the motor.

7. The slurry system for improving slag removal efficiency of claim 1, wherein: the outer side of one end of the hollow shaft (35) is provided with a driven double-row chain wheel (38), and the driven double-row chain wheel (38) is connected with a motor through chain transmission.

8. The slurry system for improving slag removal efficiency of claim 5, wherein: an outlet is arranged at the bottom of the cover body (32), and the outlet is connected with the secondary pulper (2) through a return pipeline (7).

9. The slurry system for improving slag removal efficiency of claim 1, wherein: a guide plate (310) is arranged below the bottom end of the screen drum (31).