CN87208187U - Deink floatation machine for waste paper - Google Patents

Abstract

The utility model relates to a flotation machine used for waste paper deink, wherein, waste paper in a hydrapulpter is added with water and agent and is heated, and then fiber is separated from ink by dissociation. Pulp gotten from the process is pumped into a jet turbulent flow mixer of the flotation machine by a pulp pump; then air is taken in to generate turbulent flow which can prompt the fiber, the agent, ink particles and the air to be mixed thoroughly. The mixed pulp flows across an eccentric tooth type flow guide, and then uniformly flows into a groove body. Bubbles in the mixed pulp drive the ink particles to float onto the pulp surface, so the fiber and the ink particles can be separated. The utility model is suitable for the flotation treatment of the ink of general waste paper pulp and grass fiber pulp.

Description

Deink floatation machine for waste paper

The utility model belongs to the pulp and paper industry machinery technical field.

Since the sixties, after beginning the printing-ink in the reclaimed waste paper removed,, be used to make middle-grade above paper abroad as the paper pulp papermaking raw material.Thereby saved the papermaking raw material, solved the emission pollution problem of pulping waste liquor simultaneously.Removing one of key equipment of printing ink, is deinking device.

For removing in the waste paper pulp the ink particle with fiber spin-off, can adopt floatation to make ink particle and fiber separation in the waste paper pulp.

The injection that West Germany volt company proposes in the DE3120202A1 patent-tubular type flotation device is to adopt horizontal cylindrical cell body, adapted stock pump, injector, fixed tube and air deflector.Contain the slurry of medicament, be pumped into injector, produce vacuum, suck air, produce bubble.Printing ink in the slurries, under the effect of medicament, and by fixed tube mixed after, agglomerated together printing ink, by bubble, shift to liquid level, fiber is separated with ink particle.

The purpose of this utility model is to provide a kind of slurry that can make fully to mix with medicament, and slurry stream is evenly distributed in cell body, reaches the good deinking flotation device of deinking efficiency.

The utility model is determined design parameter according to the Venturi principle by the flow behavior of slurries.The employing twin-stage sprays, and makes slurries reach turbulence state, and makes fiber in mixing tube, after deinking medicament and air fully mix, through the tooth-like air deflector of off-centre, evenly flow in the cell body prejudicially.Ink particle is floating to liquid level by the air bubble band.The center line of injector, fixed tube and air deflector is setovered mutually with the cell body center line.Eccentric distance e is that the requirement according to cell body section parameter designs.Purpose is that slurry stream is evenly distributed, and ink particle evenly floats, and impels the ink particle scum silica frost simultaneously, under the state that increases slurry amount behind the groove, flows before groove dispersedly.Eliminate the long-pending slurry at pot shell dead angle, removed the printing ink scum silica frost and flow backwards, get rid of irregular technical problem, improved floatation and ink removing efficient.According to experiment, the span of e value is generally 10～20 millimeters.Compared with the prior art, advantage of the present utility model and good effect are conspicuous.

Below in conjunction with accompanying drawing the utility model is described further.

An embodiment of the present utility model as shown in the figure.

Flotation device mainly is made up of cell body, injecting type turbulent flow blender and eccentric tooth-like air deflector.In blender, pulp-inlet pipe (2) feeds suction chamber (3) vertically, and its conical outlet can make the slurry miscarriage give birth to injection; Air inlet pipe (1) radially feeds suction chamber (3), and pulp-inlet pipe (2) is fixed together with cell body (9) and suction chamber (3) respectively with air inlet pipe (1); Suction chamber (3) top is cylinder, and the bottom is two sections cones and makes one with the conical jet mouth of pipe of waiting pipe (4) and waiting pipe (4).In air deflector, cylindrical mixing tube (5) disperses the mouth of pipe (6) and square profile of tooth draft tube outlets (7) to make one with horn-like water conservancy diversion, and as a whole with flange, Bolt Connection with blender; Water conservancy diversion drops down plate (8) and is fixed in the cell body bottom, and its outer rim and the water conservancy diversion dispersion mouth of pipe (6) form flow-guiding channel, impels slurry stream along entering cell body all around equably.Eccentric distance e is taken as 15 millimeters.

The slurry that contains deinking medicament and steam, send into pulp-inlet pipe (2) by stock pump, spray to time pipe (4) through conical outlet, the generation first order is sprayed, simultaneously, the injected slurry stream of air in the suction chamber (3) siphons away and produces vacuum, and outside air just enters in the suction chamber (3) by air inlet pipe (1), and injection is successively carried out.When slurry stream is managed (4) by waiting, produce the second level and spray, slurry stream is in turbulence state all the time in course of injection, and this abundant mixing to slurries, air and medicament is very strong.Slurry is flowed through after the two-stage vacuum injection, in mixing tube (5), further fully mix, after water conservancy diversion disperses the mouth of pipe (6), water conservancy diversion drops down plate (8) and draft tube outlets (7) enters cell body (9), the ink particle in the slurry stream is floated to liquid level by the bubble band and overflows outside the groove through weir plate (10).Slurry after the deinking flows out from slurry outlet simultaneously and enters second section flotation device.

Adopt the utility model, can carry out many series connection as required, its production characteristics are pulp yield height, and fiber loss is few.

Claims (2)

1, a kind of deinking flotation device of forming by cell body, blender and air deflector, it is characterized in that having injecting type turbulent flow blender and eccentric tooth-like air deflector, injecting type turbulent flow blender mainly by the pipeline type suction chamber (3) that has two sections cones, radially feed suction chamber (3) and with the affixed air inlet pipe (1) of cell body (9), vertically feed suction chamber (3) and with cell body (9) affixed have the pulp-inlet pipe (2) of conical outlet and have the time pipe (4) that conical jet Guan Bingyu suction chamber (3) is connected as a single entity form; Eccentric tooth-like air deflector mainly by cylindrical mixing tube (5), disperse the mouth of pipe (6) with the horn-like water conservancy diversion of mixing tube (5) one, be fixed in water conservancy diversion and disperse the square profile of tooth draft tube outlets (7) at the mouth of pipe (6) edge and be fixed in water conservancy diversion on the cell body (9) to drop down plate (8) and form.

2, deinking flotation device according to claim 1 is characterized in that the center line of eccentric tooth-like air deflector and the eccentric throw of cell body (9) center line are e, and its scope is generally 10～20 millimeters.

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