CN2346507Y

CN2346507Y - Wasted paper ink removing hydrosizer

Info

Publication number: CN2346507Y
Application number: CN98233333U
Authority: CN
Inventors: 王育民
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-07
Filing date: 1998-12-07
Publication date: 1999-11-03
Anticipated expiration: 2008-12-07

Abstract

The utility model relates to a device for removing ink on waste paper to recover paper fiber. The utility model comprises a once floatation tank with a tangential pulp inlet pipe, a secondary flotation tank with a tangential secondary pulp inlet pipe, a pulp outlet, an ink discharge pipe, wherein, the secondary flotation tank is concentric with the once floatation tank. The utility model is characterized in that the inner part of the flotation tank is concentrically provided with a cylindrical opening foam overflow barrel, the barrel bottom is provided the ink discharge pipe, and the top is provided with a scraper which can be used for collecting foam generated in a floatation process to the foam overflow barrel. Compared with the existing deinking device for waste paper, the utility model does not need a foam sucking pipe, a vacuum draw device, an air and liquid separating device, etc. can be omitted. The utility model has the advantages of convenient installation, less investment, power saving, and high deinking rate; the running off rate of the fiber is less than 3 percents.

Description

The deinking flotation device

The utility model relates to and a kind ofly is used to remove printing ink on the waste paper to reclaim the equipment of its fiber.

The existing equipment that is used for deinking can be seen from Fig. 5, it contain a cylindrical uncovered flotation cell 1 with tangential pulp-inlet pipe 2, with the cylindrical uncovered secondary flotation groove 4 of the tangential secondary grout feeding pipe 3 of band of a concentric installation of flotation cell, and grout outlet 6 and ink emission pipe 5.Wherein ink emission pipe 5 same set of vacuum systems connections, pulp-inlet pipe are communicated with the fluid delivery side of pump.Have deinking agent and enter flotation cell with the secondary stock that is mixed with air one time from pulp-inlet pipe, rotation is risen and is excessive to the secondary flotation groove from the groove top in groove; Enter the impact of the secondary slurry that the slurry of secondary flotation groove is subjected to tangentially entering and continue rotation.In this process, printing ink floats with foam, and is siphoned away by the ink emission pipe: the white slurry of sloughing printing ink then flows out from grout outlet 6, and the sub-fraction in the white slurry is introduced into secondary grout feeding pipe 3, carries out secondary flotation.The shortcoming of existing this deinking equipment is: 1) it need dispose the device of a cover vacuum draw and the device of gas-liquid separation, so the expense of equipment investment is higher; 2) vacuum suction apparatus institute power consumption is bigger; 3) the liquid level instability of waste paper pulp in floatation process, and its liquid level just is difficult to regulate, so the deinking rate of this equipment is low, fiber loss is big.

Characteristics such as the purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, and a kind of deinking flotation device is provided, and the equipment investment expense is low so that it has, power saving, easy to operate and deinking rate height, fiber loss are few.

The utility model deinking flotation device contain a cylindrical uncovered flotation cell with tangential pulp-inlet pipe, with the cylindrical uncovered secondary flotation groove of the tangential secondary grout feeding pipe of the concentric band of floating trough, and grout outlet and ink emission pipe, its feature is: a cylindrical uncovered foam overflow cylinder has been installed in flotation cell with one heart, and this tube bottom has the ink emission pipe, the scraper plate that the foam that floatation process is produced imports the foam overflow cylinder is equipped with at the top.

The diameter of the secondary flotation groove in the utility model deinking flotation device and rise respectively less than the diameter of a flotation cell and rise, it rises greater than the secondary flotation groove and less than a flotation cell diameter of foam overflow cylinder less than the secondary flotation groove.Be beneficial to foam is positioned at the center from the periphery flow direction of groove foam overflow cylinder.

The utility model deinking flotation device also can have the regulating box with hole link in the outside of secondary flotation groove, this case contains two chambers that formed by the adjustable overflow plate mediastinum that it is risen, and the bottom that the bottom of one of them chamber is provided with grout outlet, another chamber has the opening in duct; The adjustable overflow plate that it is risen comprises one and vertically is fixed in the sidewall of regulating box and reclines mutually and the portable plate of kink in the upright guide groove of regulating box sidewall with fixed head, the side plane with the fixed head top on the diapire, and one with the affixed one of portable plate and can be driven by handwheel and make upper and lower mobile screw rod.Regulating rising of overflow plate is the interior liquid level of controllable adjustable case, thereby has controlled the paper pulp liquid level in the secondary flotation groove that is communicated with regulating box.

The utility model has the advantages that: 1) the deinking flotation device has omitted necessary vacuum suction apparatus of existing deinking equipment and gas-liquid separation device, makes that equipment investment is few, floor space is little and equipment is easy for installation, quick; 2) cancelled in equipment after the vacuum suction apparatus, power consumption reduces widely; 3) regulating box in the utility model can be controlled liquid level and the stable liquid level of slurry in floatation process effectively, therefore deinking rate height, fiber loss rate are low, and can omit instrument or instrument that a cover is used for stabilizing solution face, control liquid level, make corollary equipment simple, easy to operate.

To and contrast accompanying drawing by embodiment below, the utility model will be further described below, have in the accompanying drawing:

Fig. 1 is the vertical view of the utility model deinking flotation device;

Fig. 2 and Fig. 3 are respectively the A-A cutaway view among Fig. 1 and the B-B cutaway view of regulating box 7;

Fig. 4 is the part drawing of the scraper plate 9 among Fig. 2, and wherein (a) is that front view, (b) are vertical views;

Fig. 5 is the three-dimensional sketch of existing deinking equipment.

Embodiment 1:

The structure of deinking flotation device can be seen from Fig. 1 and Fig. 2, it contains a cylindrical uncovered flotation cell 1, cylindrical uncovered secondary flotation groove 4 with a concentric installation of flotation cell, in the centres of secondary flotation groove a cylindrical uncovered foam overflow cylinder 10 has been installed, eight pulp-inlet pipes 2 along the tangential installation of wall wherein are housed on the cylindrical outer wall of a flotation cell 1, three secondary grout feeding pipes 3 along the tangential installation of cylindrical outer wall are housed on the outer wall of secondary flotation groove 4, and ink emission pipe 5 is equipped with in the bottom of foam overflow cylinder 10 and four scraper plates 9 are equipped with at its top; Grout outlet 6 is installed on the connected pore channel 47 of secondary flotation trench bottom.

Scraper plate 9 in the present embodiment can be as seen from Figure 2, and it is curved, and the face of its arc indent can be in face of the slurry that is rotating, so that foam is directed into foam overflow cylinder 10 (arrow among Fig. 1 is represented the direction of rotation of slurry).The mounting means of scraper plate in the deinking flotation device can be seen from Fig. 1, Fig. 2 and Fig. 4, it can be connected on the plate 93 that has a bar 92 by screw 91, bar 92 is connected on the framework 95 that is welded by channel-section steel by upper and lower two nuts 94, and this frame fixation is on the top of a flotation cell.Its base of scraper plate after the installation should flush with the top margin of foam overflow cylinder, so that foam flows in this tube effectively.

Suck air and tangentially enter flotation cell 1 one time at pulp-inlet pipe 2 from the band pressure of total pulp-inlet pipe and the secondary stock that includes deinking agent, rotation is risen and is overflowed in it at the open top end of secondary flotation groove 4 in this groove; In the secondary flotation groove, be subjected to continuing rotation from the impact of the tangential secondary slurry that flows into of secondary grout feeding pipe.Secondary stock is in rotary course, heavier paper fiber is poly-to cell wall and sink, and last passing hole channel 47 is by grout outlet 6 outputs, and the printing ink in the secondary stock is adsorbed by foam and floats and poly-to the center, they import foam overflow cylinder 10 by scraper plate 9, are discharged by ink emission pipe 5 at last.

Scraper plate 9 in the present embodiment also can be dull and stereotyped, and this flat board when mounted should be tangent with the cylindrical wall of foam overflow cylinder, and tangent direction is opposite with the direction of rotation of slurry, that is opposite with the installation direction of tangential pulp-inlet pipe, secondary grout feeding pipe.

Embodiment 2:

It is identical with the structure of embodiment 1, and also can from Fig. 2, see, the diameter of its secondary flotation groove 4 with rise all less than the diameter of a flotation cell 1 with rise, and it rises between two flotation cells the diameter of foam overflow cylinder less than the secondary flotation groove, promptly is higher than rising and rising less than a flotation cell of secondary flotation groove.Position between flotation cell, secondary flotation groove, the foam overflow cylinder, and the trend by export-oriented center of foam matches in correlation of rising between them and the floatation process, that is foam is automatically poly-to the center by the groove inwall of flotation cell, secondary flotation groove in slurry rotation, by scraper plate foam is blocked in the tube 10 then, and discharge from the ink emission pipe.

Embodiment 3:

Its structure is with the difference of embodiment 1 or 2: it has set up a uncovered regulating box 7 that is communicated with duct 47 in the outside of secondary flotation groove 4, the partial sidewall of this case can overlap with the flotation cell outer wall, be provided with the adjustable overflow plate that it is risen 8 in the regulating box, this plate becomes two

chambers

71 and 72 with the regulating box mediastinum, wherein is provided with the opening that grout outlet 6, two Room, 72 bottom side cornices have duct 47 on 71 diapires of a Room; The adjustable overflow plate that it is risen includes a portable plate 82 in the upright guide groove that vertically is fixed in regulating box sidewall and diapire 83, and one with the affixed one of portable plate and can be driven by handwheel 85 and make upper and lower mobile screw rod 84.Rotation hand wheel reduces portable plate decline, overflow plate height, and then slurry reduces from the overflow height of Room 71 72 to, two Room, and therefore the slurry liquid level of the secondary flotation groove that is communicated with it also descends; Otherwise rise with the handwheel rotating screw bolt, then the liquid level of slurry in the secondary flotation groove increases thereupon.Therefore present embodiment deinking flotation device can be controlled the slurry liquid level in the secondary flotation groove effectively after having set up regulating box 7, and regulating box and flotation cell wall altogether partly, but it is simple in structure, material-saving when making, take up an area of less when using and easy for installation, quick.

In one Room 71 of regulating box 7 a fixing dividing plate 86 can be set also,, make the unnecessary slurry in the chamber 71 overflow into three Room 73, flow out from managing 75 by dividing plate 86 with the slurry liquid level in the confinement cells 71.

The utility model deinking flotation device can be used for the waste paper that difference contains the China ink amount, especially floatation concentration be 1.0～1.6 weight %, the deinking of advancing to starch the various waste paper of the about 0.25mpa of pressure (gauge pressure), power-supply device and instrument or instrument need not be set for it and equipment investment is few, floor space is little, easy to operate, after its deinking the white slurry of gained conform with that whiteness requires and the fiber loss rate in 3%.

Claims

1, a kind of deinking flotation device, it contain a cylindrical uncovered flotation cell (1) with tangential pulp-inlet pipe (2), with the cylindrical uncovered secondary flotation groove (4) of the tangential secondary grout feeding pipe (3) of the concentric band of flotation cell, and grout outlet (6) and ink emission pipe (5), it is characterized in that: a cylindrical uncovered foam overflow cylinder (10) has been installed with one heart, and this tube bottom has ink emission pipe (5), the scraper plate (9) that the foam that floatation process is produced imports the foam overflow cylinder is equipped with at the top in flotation cell.

2, flotation device as claimed in claim 1, it is characterized in that: the diameter of said secondary flotation groove (4) and rise respectively less than the diameter of a flotation cell and rise, it rises greater than the secondary flotation groove and less than a flotation cell diameter of foam overflow cylinder less than the secondary flotation groove.

3, as claim 1 and 2 described flotation devices, it is characterized in that: the outside of said secondary flotation groove has the regulating box (7) that is communicated with duct (47), and this case contains two chambers (71,72) of being formed by the adjustable overflow plate that it is risen (8) mediastinum and wherein has the opening of duct (47) in the bottom that is provided with grout outlet (6), two Room (72), the bottom of a Room (71); The adjustable overflow plate that it is risen comprises one and vertically is fixed in the sidewall of regulating box and reclines mutually and the portable plate (82) of kink in the upright guide groove (83) of regulating box sidewall with fixed head (81), the side plane with the fixed head top on the diapire, and one with the affixed one of portable plate and can be driven by handwheel (85) and make upper and lower mobile screw rod (84).