CN2102308U - White water separator of paper production - Google Patents

Abstract

The utility model relates to equipment which recovers fibres, filling material and clear water from the white water of paper industry. The utility model is characterized in that little flocculant is mixed in the white water, and solid-liquid separation can be generated in a settling chamber after the white water is uniformly proportioned with the water through the form of the pulse flow; the fibre and the filling material are output form the lower part of a separator, and the clear water overflows from the upper part of the separator. The recovery rate of the fibre and the filling material can reach more than 99% by using the separator to process the white water. The quality of recovered paper pulp and the clear water is great, and the influence on the operation of a paper-making machine and the paper quality is not obvious. The economical benefit of a paper factory is raised, and the environment pollution caused by the exhaust of the white water and the corrosive pulp is avoided.

Description

White water separator of paper production

The utility model relates to a kind of equipment of isolating fiber, filler and clear water from paper industry plain boiled water.

The plain boiled water separation equipment in existing paper mill mainly contains several forms: precipitating type, filtering type and showy formula.The time that the precipitating type solid content separates is long, and the rate of recovery is very low, and plain boiled water is easily degenerated; The filtering type equipment investment is big, and the too big separation of filter mesh is incomplete, and too little easily obstruction again also needs regularly use flushing with clean water, troublesome poeration; The formula of floating needs to be equipped with in addition air pump, and the rate of recovery is not high yet, is easy to degenerate the fiber that makes recovery at the bottom of the pond and carries rotten slurry secretly.More than several equipment since separating effect bad, not only make the paper mill waste raw material, reduced benefit, also cause the environmental pollution that causes because of discharging.

The purpose of this utility model provides a kind of rate of recovery height, the plain boiled water time of staying is short, equipment investment is few, the mthod of white water from paper making separator of easy operating.

The utility model is to realize like this, utilize plain boiled water to add that fiber and filler are condensed into bigger granule after a small amount of flocculant, this proportion is slightly larger than the characteristic of water, design a kind of pulse sedimentation separation equipment, make the plain boiled water that is mixed with flocculant after being subjected to violent impact, quicken the solid content cohesion, and be deposited in the bottom of equipment rapidly, send the paper machine back to and use, then recycle after the top overflow of clear water.

Below in conjunction with accompanying drawing the utility model is described in detail:

Accompanying drawing is the enforcement structure chart that utilizes the mthod of white water from paper making separator of pulse sedimentation principle.

Number in the figure: 1-pulse generation chamber, 2-bell jar, 3-siphon destructing tube, 4-downspout, 5-overflow tank, 6-clear water output, 7-sparge pipe, 8-expansion chamber, 9-agitating device, 10-motor.

From accompanying drawing, can see, the top of plain boiled water separator is pulse generation chamber 1, the plain boiled water of sending here from the paper machine feeds the pulse generation chamber by inlet tube, for the paper pulp in the plain boiled water can be got off by flocking settling, also flocculant solution is fed the pulse generation chamber together from the plain boiled water inlet tube, have downspout 4, siphon destructing tube 3 and bell jar 2, bell jar 2 to be installed in the top of downspout 4 in the pulse generation chamber 1, the bell jar top communicates with siphon destructing tube 3.The bottom of pulse generation chamber 1 is a sparge pipe 7, makes plain boiled water get off afterwards to distribute equably by sparge pipe from downspout 4 and flows to the separator bottom.The bottom of separator is provided with agitating device 9 and reclaims the slurry outlet, and agitating device 9 drives by motor 10.

Below be the separation principle of the paper pulp and the water of plain boiled water separator:

The effect of pulse generation chamber 1 is to allow the plain boiled water mixing back generation flow pulse that is added with a small amount of flocculant send into sparge pipe 7, in order to avoid cohesion of the aperture congestion affects solid content of sparge pipe and sedimentation, this pulse generation chamber is the siphon principle structure, the process of concrete pulse water distribution is: after plain boiled water and flocculant enter pulse generation chamber 1, indoor liquid level rises gradually, when liquid level is higher than the mouth of pipe of center downcomer 4, plain boiled water promptly flows down from downspout 4, and carry air in tube secretly, make bell jar 2 form parital vacuum, thereby atmospheric pressure is pressed into plain boiled water in the bell jar, and flows to sparge pipe 7 by downspout 4, and the liquid level of the chamber of pulse generation at this moment 1 descends, when the mouth of pipe of siphon destructing tube 3 exposes liquid level, air is inhaled into, the bell jar vacuum expendable pattern, and downspout stops feed liquor.Because plain boiled water enters pulse generation chamber 1 continuously, this chamber liquid level rises again gradually, when liquid level is higher than downspout 4, plain boiled water flows down again automatically, so automatically repeatedly, plain boiled water just flows to sparge pipe 7 with pulse mode, sparge pipe 7 is formed or is curved coil pipe and other shape by some straight tubes parallel with liquid level are installed, have many apertures on the pipe, plain boiled water is distributed on the sparge pipe after downspout 4 flows down soon, and ejects by aperture, because plain boiled water is pulse, Confucius is difficult for stopping up, and also makes solid particle and flocculant increase the chance of contact-impact.Arriving expansion chamber 8 from the plain boiled water of sparge pipe 7 ejection is automatic solid-liquid layering, and the bottom that solid phase is deposited in separator flows out to by valve and reclaims the slurry storage tank and return the paper machine then and use, and clear water then overflows through clear water output 6 recyclings from overflow launder 5.Reclaim the bottom draw discharge of slurry at expansion chamber 8 in order to make, agitating device 9 is equipped with in the separator bottom, and agitating device available motor 10 is used as power.

Except the pulse flow generation chamber embodiment of above-mentioned employing siphon principle, other form can also be arranged.The valve of form controls such as electricity consumption, gas, magnetic for example is installed on downspout, size and time by automatic adjusting of sensor or manual adjustment pulse flow, also can be obtained satisfied result.

Tentatively test through the design people, adopt this plain boiled water separator to reclaim fiber in the plain boiled water and filler more than 99%, and traditional showy formula and precipitating type are all below 50%, filtering type is also only about 80%, and this separator plain boiled water is handled time of staying weak point, it is fresh to reclaim slurry, paper machine operation and papery all there is not obvious influence, the clear water that overflows is also very clean, meet the requirement of paper machine water, improved the economic benefit of paper plant, the environmental pollution that can also avoid plain boiled water or rotten slurry discharging to cause.

Claims (3)

1, a kind of separator of from paper industry plain boiled water, isolating fiber, filler and clear water, the top that it is characterized in that separator is pulse generation chamber 1 and overflow tank 5, the inlet tube that 1 outside, pulse generation chamber has plain boiled water and flocculant to flow into, inside is provided with downspout 4, siphon destructing tube 3 and bell jar 2, bell jar 2 is installed in the top of downspout 4, the bell jar top communicates with siphon destructing tube 3, and sparge pipe 7 is led in the below of downspout 4, and the bottom of separator is agitating device 9 and reclaims the slurry outlet.

2, separator according to claim 1 is characterized in that sparge pipe 7 is to be made of some pipes that have the hole.

3, separator according to claim 1 is characterized in that agitating device 9 is driven by motor 10.

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