CN213836079U

CN213836079U - Plain boiled water fiber recovery plant

Info

Publication number: CN213836079U
Application number: CN202022372113.8U
Authority: CN
Inventors: 李吉; 魏伟; 尚鹏程
Original assignee: Xinxiang Xinping Aviation Machinery Co ltd
Current assignee: Xinxiang Xinping Aviation Machinery Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-07-30
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a white water fiber recovery device, which comprises a box body and a rotary drum; a slurry inlet storage area, a screening separation area and a slag discharging area are sequentially and longitudinally arranged in the box body, the bottoms of the slurry inlet storage area and the screening separation area are in the shape of a sunken semicircular barrel, and the bottom of the screening separation area is higher than the bottom of the slurry inlet storage area; a horizontal pipe with a plurality of openings is longitudinally arranged in the slurry inlet and storage area, and the horizontal pipe is communicated with the slurry inlet; the slurry inlet and storage area is provided with an overflow port; the radius of the rotary drum rotatably arranged in the screening separation area is smaller than the radius of the bottom of the screening separation area; the axis of the rotating shaft is closer to the slag discharge area than the axis of the bottom of the screening separation area; a screen is arranged outside the hollow rotary drum, a scraper is arranged on the periphery of the screen, and the scraper inclines in the opposite direction to the rotation of the rotary drum; a water outlet is arranged in the rotary drum; a flushing spray device is arranged above the junction of the slag discharge area and the screening separation area. The utility model discloses plain boiled water fiber recovery plant takes up an area of for a short time, and the operation energy consumption is little, and structural component makes the precision low, and is with low costs.

Description

Plain boiled water fiber recovery plant

Technical Field

The utility model relates to a papermaking equipment field especially relates to a plain boiled water fiber recovery plant.

Background

The recycling of the papermaking white water can save fiber filler, reuse waste water, prevent pollution and save heat energy. In the prior art, a clarification and precipitation method or a multi-disc white water backwater machine and the like are adopted to screen and separate suspended solid matters in white water, and the method has large occupied area and high manufacturing cost. The screening type white water recovery machine occupies a small area, and vacuum pressure type screening equipment is adopted in the prior art, and the equipment has the operation characteristics that: the mixed liquor of the white water and the fiber with a certain pressure is driven by the rotor in the screen shell to generate local positive and negative pressure pulses, and the interception and separation of solid matters such as fiber and the like and the white water are realized under the action of the pulse force. The high-speed operation of the equipment requires the rotor to have higher processing precision and high manufacturing cost. The prior art also has a screening type white water recovery machine designed by adopting a centrifugal force principle, and the technology has the defects of high power consumption, high structural component precision and high cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the white water fiber recovery equipment can screen and separate suspended solid matters such as white water, fibers and the like, and is small in occupied area, low in running speed, low in energy consumption and low in required precision of structural components.

The technical scheme of the utility model is that:

the white water fiber recovery equipment comprises a box body and a rotary drum; the box body is internally and longitudinally provided with a pulp inlet liquid storage area, a screening separation area and a slag discharging area which are communicated at the upper parts, the bottoms of the pulp inlet liquid storage area and the screening separation area are in the shape of mutually parallel sunken semicircular barrels, and the bottom of the screening separation area is higher than the bottom of the pulp inlet liquid storage area; the slurry inlet and storage area is longitudinally provided with a horizontal pipe, and a plurality of openings are uniformly distributed on the horizontal pipe; the horizontal pipe is communicated with the pulp inlet; the horizontal pipe is lower than the intersection line of the bottom of the slurry inlet and storage area and the bottom of the screening and separation area; an overflow port is arranged at the upper part of the slurry inlet and storage area, and the lower edge of the overflow port is not higher than the intersection line of the slag discharge area and the bottom of the screening and separation area; the rotary drum is rotatably arranged in the screening separation area, and the radius of the rotary drum is smaller than the radius of the bottom of the screening separation area; the rotating shaft of the rotary drum is closer to the slag discharge area than the axis at the bottom of the screening separation area; the rotary drum is a hollow body, a screen is arranged outside the rotary drum, scrapers with full length along the axial direction are arranged on the periphery of the screen, the width of each scraper is not more than the minimum distance between the rotary drum and the semicircular barrel-shaped bottom of the screening separation area, and the scrapers incline towards the opposite direction of the rotation of the rotary drum; a water outlet is arranged in the rotary drum; and a flushing spray device is arranged above the junction of the slag discharge area and the screening separation area.

Preferably, the total area of all the openings on the horizontal pipe is not less than the cross-sectional area of the slurry inlet.

Preferably, a cover body is arranged above the box body, the cover body is arched, and a steam spray pipe capable of rotating by an angle is arranged on the cover body.

Preferably, a flushing water pipe is arranged above the slag discharge area.

Preferably, the scrapers are two or more uniformly distributed.

Preferably, the included angle between the scraper and the tangent of the rotary drum is 45-60 degrees.

Preferably, the screen is a 10-200 mesh screen woven by steel wires with the diameter of 2-6mm and non-metal fabrics.

Preferably, the intersection line of the bottom of the screening separation area and the slag discharge area is as high as the rotating shaft of the rotary drum.

Preferably, the rotary drum is provided with more than 4 hollow circular rings, and the hollow circular rings are fixedly connected with a plurality of support steel pipes which are arranged in parallel in the axial direction; the periphery of the hollow circular ring is covered with a metal wire mesh, and the periphery of the metal wire mesh is provided with the screen.

The utility model has the advantages that:

the utility model discloses white water fiber recovery unit advance thick liquid storage area, screening disengagement zone for sunken semicircle barrel-shaped, can avoid appearing the dead angle in the white water fiber recovery unit on the one hand, on the other hand has reduced the storage capacity of papermaking white water at equipment, and equipment takes up an area of for a short time, and the operation can consume for a short time, and structural component manufacturing accuracy is low, and is with low costs.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the white water fiber recovery apparatus of the present invention.

Fig. 2 is a schematic view of the working principle of the flushing and spraying device of the white water fiber recovery equipment of the present invention.

FIG. 3 is a schematic view of the working principle of slag suction and removal by the rotary drum.

FIG. 4 is a side schematic view of a drum configuration.

In the figure:

1. a box body; 11. a slurry inlet and storage area; 111. the bottom of the slurry inlet and storage area; 112. a horizontal tube; 12. screening and separating area; 121. the bottom of the screening separation zone; 13. a slag discharge area; 131. flushing the water pipe; 2. a drum; 21. a rotating shaft; 22. screening a screen; 23. a scraper; 24. a water outlet; 25. a hollow circular ring; 26. supporting the steel pipe; 27. a wire mesh; 3. a cover body; 31. a steam shower pipe; 4. flushing the spraying device; 5. a pulp inlet; 6. an overflow port; 7. a slag discharge port.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

Example 1

Fig. 1 is a schematic cross-sectional structure diagram of the white water fiber recovery apparatus of the present invention. As shown in fig. 1, the white water fiber recovery apparatus of the present embodiment includes a box 1 and a rotary drum 2; a slurry inlet and storage area 11, a screening and separating area 12 and a slag discharging area 13 are longitudinally arranged in the box body 1 in sequence, the upper parts of the slurry inlet and storage area 11 and the screening and separating area 12 are communicated, the bottoms of the slurry inlet and storage area 11 and the screening and separating area 12 are in the shape of mutually parallel sunken semicircular barrels, and the bottom 121 of the screening and separating area is higher than the bottom 111 of the slurry inlet and storage area; the slurry inlet and storage area 11 is longitudinally provided with a horizontal pipe 112, and a plurality of openings are uniformly distributed on the horizontal pipe 112; the horizontal pipe 112 is communicated with a slurry inlet 5; the horizontal pipe 112 is lower than the intersection line of the bottom 111 of the slurry inlet and liquid storage area and the bottom 121 of the screening and separating area; the upper part of the slurry inlet and storage area 11 is provided with an overflow port 6, and the lower edge of the overflow port 6 is not higher than the intersection line of the slag discharge area 13 and the bottom 131 of the screening and separating area; the rotary drum 2 is rotatably arranged in the screening separation area 12, and the radius of the rotary drum 2 is smaller than the radius of the bottom 121 of the screening separation area; the rotating shaft 21 of the rotary drum 2 is closer to the slag discharge area 13 than the axis of the bottom 121 of the screening separation area; the rotary drum 2 is a hollow body, a screen 22 is arranged outside the rotary drum 2, a scraper 23 along the axial full length is arranged on the periphery of the screen 22, the width of the scraper 22 is not more than the minimum distance between the rotary drum 2 and the semi-circular barrel-shaped bottom of the screening separation zone 12, and the scraper 23 inclines towards the opposite direction of the rotation of the rotary drum 2; a water outlet 24 is arranged in the rotary drum 2; a flushing spray device 4 is arranged above the junction of the slag discharge area 13 and the screening separation area 12.

The utility model discloses a plain boiled water fiber recovery plant theory of operation:

fig. 2 is the working principle schematic diagram of the flushing and spraying device of the white water fiber recovery equipment of the utility model, and fig. 3 is the working principle schematic diagram of slag absorption and slag removal of the rotary drum. As shown in fig. 1, 2 and 3, when white water fiber recovery is performed, the papermaking white water is introduced into the horizontal pipe 112 through the pulp inlet 5, enters the pulp inlet liquid storage zone 11 through a plurality of openings uniformly distributed on the horizontal pipe 112 for temporary storage, and enters the screening separation zone 12 when the liquid level of the papermaking white water exceeds the intersection line of the pulp inlet liquid storage zone bottom 111 and the screening separation zone bottom 121. Because the bottom 121 of the screening separation area is in the shape of a semicircular barrel, as long as less papermaking white water enters the screening separation area 12, the liquid in the white water can enter the inside of the rotary drum through the screen 22 on the rotary drum 2 and is discharged through the water outlet; suspended solids such as fibers in the papermaking white water are adsorbed onto the screen 22 or retained in the screen separator 12. At this time, the rotary drum 2 is rotated counterclockwise in fig. 1, and the suspended solid matters such as fibers remaining in the separation area 12 are moved toward the reject area 13 by the scraper 23. Because the utility model discloses a plain boiled water fiber recovery plant's rotary drum 2's pivot 21 is closer to row's sediment district 13 than the axis of screening separation zone bottom 121, and rotary drum 2's radius is less than screening separation zone bottom 121 radius for the clearance of rotary drum 2 and screening separation zone bottom 121 reduces along rotary drum rotation direction gradually, and the scraper 23 that sets up along rotary drum axial full length drives the fibre etc. suspension solid matter in the screening separation zone 12 and scrapes to row's sediment district 13, as shown in fig. 2. When suspended solid matters such as fibers and the like are brought to the junction of the deslagging area 13 and the screening separation area 12, the suspended solid matters are flushed into the deslagging area 13 under the spraying action of the flushing and spraying device 4 and are finally discharged through the deslagging port 7, so that solid-liquid separation in the papermaking white water is realized, the recovered white water can be returned to a production line for continuous use, the cyclic utilization is realized, and resources are saved; and the suspended solid matters such as fiber and the like can be further specially treated in an environment-friendly way.

The utility model discloses plain boiled water fiber recovery equipment advances thick liquid storage area, screening disengagement zone for sunken semicircle barrel-shaped, can avoid appearing the dead angle in the equipment on the one hand, and on the other hand has reduced the storage capacity of papermaking plain boiled water at equipment, is favorable to setting up the clearance when pausing. The utility model discloses edge is not higher than under the overflow mouth that plain boiled water fiber recovery plant set up arrange the sediment district with the intersection line of screening disengagement zone bottom has guaranteed that untreated papermaking plain boiled water does not get into and arranges the sediment district.

Preferably, the total area of all the openings on the horizontal tube 112 is not less than the cross-sectional area of the pulp inlet 5, so as to avoid the retention of fiber and other suspended solids in the papermaking white water in the horizontal tube.

Preferably, a cover body 3 is arranged above the box body 1, the cover body 3 is arched, and a steam spraying pipe 31 capable of rotating at an angle is arranged on the cover body 3. But set up rotation angle's steam shower 31 on arch lid 3, can in time use steam to carry out the washing of multi-angle to the box inside when plain boiled water fiber recovery plant stop work.

Preferably, a flushing water pipe 131 is arranged above the slag discharge area 13. The flushing water pipe can flush the deslagging area in time when the white water fiber recovery equipment stops working.

Preferably, the scrapers 23 are two or more uniformly distributed. The plurality of scrapers can collect and scrape the fibers and the solid matters in the screening separation area 12 for a plurality of times when the rotary drum rotates, and the efficiency is improved.

Preferably, the included angle between the scraper 23 and the tangent of the rotary drum 2 is 45-60 degrees. The inclination of 45-60 degrees is more beneficial to collecting and scraping fiber and solid matters, and the resistance is small.

Preferably, the screen 22 is a 10-200 mesh screen woven by steel wires with the diameter of 2-6mm and non-metal fabrics. The net woven by using the iron wire and the non-metal fabric has higher strength; the screen mesh with 10-200 meshes can ensure that more fibers and solids are filtered out and the resistance is small, and is most suitable for recovering the white water of the paper making.

Preferably, the intersection line of the bottom 121 of the screening separation area and the slag discharge area 13 is the same height with the rotating shaft 21 of the rotary drum 2. At this time, half of the screens 22 on the drum are used for recovering fibers and solid matters, and the equipment utilization rate is highest.

Preferably, a schematic side view of the drum structure is shown in fig. 4, wherein more than 4 hollow circular rings 25 are arranged on the drum 2, and the hollow circular rings 25 are fixedly connected with a plurality of support steel pipes 26 which are arranged in parallel in the axial direction; the outside of the plurality of support steel pipes 26 and the hollow ring 25 is covered with a wire mesh 27, and the mesh 22 is disposed on the outer periphery of the wire mesh 27. Of course, the screen may be directly fixed to both end surfaces of the drum.

The utility model discloses plain boiled water fiber recovery equipment advances thick liquid stock solution district bottom, screening separation zone bottom and is sunken semicircle barrel-shaped, and the dead angle appears in the equipment can be avoided to a direction, and on the other hand has reduced the storage capacity of papermaking plain boiled water at equipment, and equipment takes up an area of for a short time, and the operation can consume for a short time, and structural component manufacturing accuracy is low, and is with low costs.

It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. In addition, the above embodiments are only some embodiments, not all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention based on the embodiments of the present invention.

Claims

1. The white water fiber recovery equipment is characterized by comprising a box body and a rotary drum;

the box body is internally and longitudinally provided with a pulp inlet liquid storage area, a screening separation area and a slag discharging area which are communicated at the upper parts, the bottoms of the pulp inlet liquid storage area and the screening separation area are in the shape of mutually parallel sunken semicircular barrels, and the bottom of the screening separation area is higher than the bottom of the pulp inlet liquid storage area; the slurry inlet and storage area is longitudinally provided with a horizontal pipe, and a plurality of openings are uniformly distributed on the horizontal pipe; the horizontal pipe is communicated with the pulp inlet; the horizontal pipe is lower than the intersection line of the bottom of the slurry inlet and storage area and the bottom of the screening and separation area; an overflow port is arranged at the upper part of the slurry inlet and storage area, and the lower edge of the overflow port is not higher than the intersection line of the slag discharge area and the bottom of the screening and separation area;

the rotary drum is rotatably arranged in the screening separation area, and the radius of the rotary drum is smaller than the radius of the bottom of the screening separation area; the rotating shaft of the rotary drum is closer to the slag discharge area than the axis at the bottom of the screening separation area; the rotary drum is a hollow body, a screen is arranged outside the rotary drum, scrapers with full length along the axial direction are arranged on the periphery of the screen, the width of each scraper is not more than the minimum distance between the rotary drum and the semicircular barrel-shaped bottom of the screening separation area, and the scrapers incline towards the opposite direction of the rotation of the rotary drum; a water outlet is arranged in the rotary drum; and a flushing spray device is arranged above the junction of the slag discharge area and the screening separation area.

2. The white water fiber recovery apparatus of claim 1, wherein the total area of all said openings in said horizontal tube is not less than the cross-sectional area of said pulp inlet.

3. The white water fiber recovery apparatus according to claim 1, wherein a cover is provided above the box, the cover is arched, and a steam shower pipe is provided on the cover to be rotatable.

4. The white water fiber recovery apparatus according to claim 1, wherein a rinsing water pipe is provided above the draining section.

5. The white water fiber recovery apparatus of claim 1, wherein the doctor blades are two or more uniformly distributed.

6. The white water fiber recovery apparatus of claim 1, wherein the angle between the doctor blade and the tangent of the drum is 45-60 degrees.

7. The white water fiber recovery apparatus of claim 1, wherein the screen is a 10-200 mesh screen woven from steel wires having a diameter of 2-6mm and non-metallic fabrics.

8. The white water fiber recovery apparatus of claim 1, wherein the intersection of the bottom of the screen separation section and the reject section is at the same height as the rotation axis of the drum.

9. The white water fiber recovery apparatus according to claim 1, wherein the drum is provided with more than 4 hollow circular rings, and the hollow circular rings are fixedly connected with a plurality of support steel pipes which are arranged in parallel in the axial direction; the periphery of the hollow circular ring is covered with a metal wire mesh, and the periphery of the metal wire mesh is provided with the screen.