CN212128659U

CN212128659U - Sorting and recycling device for pulping waste residues

Info

Publication number: CN212128659U
Application number: CN202020453760.9U
Authority: CN
Inventors: 虎锐; 张培; 黄柏林; 王兴坤; 强忠明
Original assignee: Zhongshan Yongfa Paper Industries Co ltd
Current assignee: Zhongshan Yongfa Paper Industries Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-11
Anticipated expiration: 2030-03-31

Abstract

The utility model provides a sorting and recovery unit of pulping waste residue, include the desander, locate the sediment groove of collection of desander lower extreme with locate the screw conveyer of sediment groove bottom portion collects, one side of sediment groove is equipped with the outlet, screw conveyer's one end is equipped with the position and is higher than the row's cinder notch of outlet, be equipped with wide narrow cone type cavity down in the desander, the upper portion of desander is equipped with the edge the feed inlet that the tangential direction of cone type cavity set up, the top and the bottom of desander be equipped with respectively with communicating recovery thick liquid export and the waste residue export of cone type cavity. The utility model discloses to slurrying heavy waste residue, mainly adopt the combined mode of tapered conical grit catcher and variable pitch screw conveyer of big tapering, separate available paper pulp in the waste residue and silt once more, retrieve available fibre, reduce the production of waste residue, improve waste residue treatment effeciency.

Description

Sorting and recycling device for pulping waste residues

[ technical field ] A method for producing a semiconductor device

The utility model relates to a sorting and recovery unit of pulping waste residue.

[ background of the invention ]

In the processes of paper product manufacturing, commodity packaging and waste paper box recycling, various impurities which are not beneficial to recycling are brought in, one of the main tasks of waste paper pulping is to remove the impurities at the front end of the process as far as possible according to the characteristics of the impurities, and the impurities are also main sources of solid wastes of a waste paper papermaking factory.

The screening and purifying process of waste paper pulping mainly removes various light and heavy impurities in paper pulp according to the size and density of the impurities, and generally adopts a one-stage and multi-stage process flow for reducing the loss of pulp. The waste residue at the end of the process may still contain some available fiber due to differences in waste paper quality. For heavy waste residues generated in the screening and purifying processes in the waste paper pulping process, the common method is to discharge various waste residues into a waste residue pool tank in a centralized manner, arrange a sand settling groove or carry out natural sedimentation, then clear the residues manually or in a mechanical grab bucket fishing manner, and transport the residues outside. The water content of the waste residue generated by the method is high and usually reaches 60-80%, not only the transportation amount and the transportation cost of outward transportation are increased, but also the subsequent treatment is disturbed, and the waste residue also takes away part of the available fiber raw materials due to poor settling effect, so that the pulp consumption and the production cost control are not facilitated.

[ Utility model ] content

The to-be-solved technical problem of the utility model is to provide a sorting and recovery unit of pulping waste residue that can improve treatment effeciency, reducible solid useless output, but recycle available fiber and reducible solid useless treatment cost.

The purpose of the utility model is realized like this:

the utility model provides a sorting and recovery unit of pulping waste residue, includes the desander, locates the sediment groove of collection of desander lower extreme with locate the screw conveyer of sediment groove bottom portion collects, one side of sediment groove is equipped with the outlet, screw conveyer's one end is equipped with the position and is higher than the row's cinder notch in outlet, be equipped with wide narrow cone type cavity down in the desander, the upper portion of desander is equipped with the edge the feed inlet that the tangential direction of cone type cavity set up, the top and the bottom of desander be equipped with respectively with communicating recovery thick liquid export of cone type cavity and waste residue export.

According to the sorting and recovering device for pulping waste residues, the diameter of the large end of the conical cavity is R, R is more than or equal to 600mm and less than or equal to 900mm, the taper of the conical cavity is alpha, and alpha is more than or equal to 30 degrees and less than or equal to 40 degrees.

According to the sorting and recovering device for the pulping waste residues, the spiral conveyor is obliquely arranged, and the inclination angle between the spiral conveyor and the horizontal plane is beta, wherein beta is more than or equal to 18 degrees and less than or equal to 22 degrees.

The sorting and recovering device for the pulping waste residues is characterized in that the feeding port is connected with an inlet pipe, the recycling pulp outlet is connected with a recovering pipe, the water outlet is connected with a water discharging pipe, and the inlet pipe is connected with a cleaning water pipe.

Compared with the prior art, the utility model, have following technical characterstic:

1. the utility model mainly adopts the combination mode of the conical desander with large taper and the variable pitch screw conveyor to separate the available paper pulp from the silt in the waste residue again, recover the available fiber, reduce the production of the waste residue and improve the treatment efficiency of the waste residue;

2. the water content of the waste residue outlet of the screw conveyor can reach 40-50%, the cost of waste residue outward transportation and disposal is reduced by nearly 30%, the waste paper consumption of products is reduced, and the clean production technical level of solid waste treatment is further improved;

3. the utility model discloses required installation space is less, avoids the secondary of waste residue groove water and sediment to mix, saves the manual work, compares than equipment of the same kind (like belt filter press), and it is little to have the maintenance volume, moves reliable and stable characteristics.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is a second schematic structural diagram of the present invention;

fig. 3 is a schematic structural view of the tapered cavity of the present invention.

[ detailed description ] embodiments

The utility model provides a sorting and recovery unit of pulping waste residue, including desander 1, locate the collection sediment groove 2 of desander 1 lower extreme and locate the screw conveyer 3 of collection sediment groove 2 bottom, one side of collection sediment groove 2 is equipped with outlet 21, screw conveyer 3's one end is equipped with the row's cinder notch 31 that the position is higher than outlet 21, be equipped with wide down narrow awl type cavity 11 in the desander 1, the upper portion of desander 1 is equipped with the feed inlet 12 that sets up along the tangential direction of awl type cavity 11, the top and the bottom of desander 1 are equipped with respectively and export 13 and the waste residue export 14 with the communicating recovery thick liquid of awl type cavity 11.

The diameter of the big end of the conical cavity 11 is R, R is more than or equal to 600mm and less than or equal to 900mm, the taper of the conical cavity 11 is alpha, and alpha is more than or equal to 30 degrees and less than or equal to 40 degrees.

The spiral conveyer 3 is obliquely arranged, and the inclination angle between the spiral conveyer and the horizontal plane is beta, wherein beta is more than or equal to 18 degrees and less than or equal to 22 degrees, thereby ensuring good slag discharging effect.

The feeding port 12 is connected with a feeding pipe 4, the recovered pulp outlet 13 is connected with a recovery pipe 5, the water outlet 21 is connected with a drain pipe 6, and the feeding pipe 4 is connected with a cleaning water pipe 7. When the device needs to be cleaned, clean water can be flushed into the desander 1 through the cleaning water pipe 7 for cleaning.

The utility model discloses during the use, come from heavy waste residue such as four sections low concentration desander tailings of slurrying screening process like the desander tailings of fiber separator and purification process and select separately in entering desander 1 through inlet pipe 4 and feed inlet 12 by stuff pump pressure transport under 2-4% concentration. Under the drive of a slurry pump, waste residues enter the conical cavity 11 along the top tangent line of the conical cavity 11, the waste residues are propelled in a vortex mode in the conical cavity 11, are separated and purified under the action of centrifugal force and fluid shearing according to the density of a medium and the gravity principle, heavy parts spirally move downwards along the inner side wall of the conical cavity 11 in the conical cavity 11 and are discharged into the residue collecting tank 2 through a waste residue outlet 14 at the bottom, and light parts containing fibers move upwards in the center of the conical cavity 11 and are discharged to a slurry recycling tank through a slurry recycling outlet 13 at the top to recycle resources. The slag collecting groove 2 is connected with an inlet of the screw conveyer 3, impurities such as silt and sand precipitated in the slag collecting groove 2 are concentrated and conveyed to the slag discharging port 5 to be discharged under the mechanical rotation action of the variable-pitch screw blade of the screw conveyer 3, and the water in the impurities can flow back and be concentrated in the slag collecting groove 2 and can be discharged into the water collecting slag pool from the water discharging port 21 because the screw conveyer 3 is obliquely arranged and the position of the slag discharging port 31 is higher than the water discharging port 21.

The utility model discloses an under the low concentration condition, send the waste residue into desander 1 and separate once more, the good thick liquid that contains available fibre can recycle, effectively reduce the loss of thick liquids, reduce the waste paper consumption of product, discharge after the tailings (silt sand etc.) of non-utilizable value are concentrated through displacement screw conveyer 3, waste residue export moisture content can reach 40-50%, thereby reduce the output of waste residue, reduce waste residue outward transport and handling cost nearly 30%, the treatment effeciency of waste residue has effectively been improved, and further promote the clean production technical level of solid useless improvement.

Claims

1. The utility model provides a sorting and recovery unit of pulping waste residue, its characterized in that includes desander (1), locates collection sediment groove (2) of desander (1) lower extreme with locate spiral conveyer (3) of collection sediment groove (2) bottom, one side of collection sediment groove (2) is equipped with outlet (21), the one end of spiral conveyer (3) is equipped with the position and is higher than row cinder notch (31) of outlet (21), be equipped with narrow cone type cavity (11) under wide in desander (1), the upper portion of desander (1) is equipped with the edge feed inlet (12) that the tangential direction of cone type cavity (11) set up, the top and the bottom of desander (1) be equipped with respectively with communicating recovery thick liquid export (13) and waste residue export (14) of cone type cavity (11).

2. The device for sorting and recovering pulping waste residues according to claim 1, characterized in that the diameter of the large end of the conical cavity (11) is R, R is more than or equal to 600mm and less than or equal to 900mm, the taper of the conical cavity (11) is alpha, and alpha is more than or equal to 30 degrees and less than or equal to 40 degrees.

3. The apparatus for sorting and recovering waste residues from pulping of claim 1 or 2, wherein the screw conveyor (3) is inclined at an angle of β, β being 18 ° or more and 22 ° or less from the horizontal plane.

4. The sorting and recovering device for pulping waste residues according to claim 3, wherein the feeding port (12) is connected with a feeding pipe (4), the recovering outlet (13) is connected with a recovering pipe (5), the water outlet (21) is connected with a water discharging pipe (6), and the feeding pipe (4) is connected with a cleaning water pipe (7).