CN201092636Y - Papermaking paper-pulp portrait quantitative pulsed attenuator - Google Patents

Abstract

The utility model discloses a paper pulp longitudinally quantitative pulse attenuator composed of a pulp inlet pipe (1), a shunt (2) arranged on the pulp inlet pipe (1), a mixing bath (3) connected with the shunt (2), a pulp outlet pipe disposed on the mixing bath (3) and a reflux pipe (6) arranged on the upper portion of the mixing bath (3). The paper pulp longitudinally quantitative pulse attenuator effectively eliminates concentration pulse in a starching system and pressure pulse caused by a minor cycle system, can effectively increase finished paper, avoid paper breakage caused by fluctuation of pressure or concentration, improve productive efficiency and greatly reduce the paper making cost.

Description

Paper making pulp longitudinal basis weight pulse attenuator

Technical field:

The utility model belongs to the paper making equipment field, is specifically related to a kind of paper making pulp longitudinal basis weight pulse attenuator that improves the fluctuation of paper longitudinal basis weight.

Background technology:

In the production process of papermaking enterprise, the longitudinal basis weight of paper is one of object the most rambunctious, and it also is a most important control factor in the paper-making process.The flow of short circulation, dry solid content, fines content or temperature even have only small variation, also can be disturbed production process, and final finished is changed, even make the paper machine paper that breaks.So the papermaker is being perplexed in the fluctuation of longitudinal basis weight all the time, just usually said paper web landforms are not good.The good slurry through secondary of one section slagging-off of the constant part of present most of paper machine enters starching pump towards slurry, and " first in first out " therefore can't solve pressure and concentration impulse and bring to such an extent that influence.In addition, people often think that the fluctuation of longitudinal basis weight is due to the constant part pressure pulse, thus choose expensive inlet pressure sieve, starching pump, but finally not only can't thoroughly solve the big problem of longitudinal basis weight fluctuation, and also cost of investment significantly increases.Main cause is that expensive import equipment can reduce pressure pulse to a certain extent, but but can't solve in the constant part concentration impulse to becoming the influence of paper longitudinal basis weight.Facts have proved that pressure oscillation is a big aspect of longitudinal basis weight fluctuation, thoroughly solve the longitudinal basis weight fluctuation greatly, key is to solve the pulse of constant part pulp density.

Summary of the invention:

The purpose of this utility model provides a kind of longitudinal basis weight pulse attenuator, the utility model overcomes can't solve the big shortcoming of longitudinal basis weight fluctuation fully in the prior art, fully effectively eliminate pressure and concentration impulse, the longitudinal basis weight fluctuation is reduced, improve the paper web landforms, improve the product quality and the production efficiency of paper.

The utility model by the following technical solutions for achieving the above object: paper making pulp longitudinal basis weight pulse attenuator, described quantitative pulse attenuator is established current divider by pulp-inlet pipe on the pulp-inlet pipe, current divider connects mixing channel, establish grout outlet on the mixing channel, return duct is established on the top of mixing channel.

Above-mentioned paper making pulp longitudinal basis weight pulse attenuator, the described pulp-inlet pipe of further improved structure is located at below the mixing channel.

Above-mentioned paper making pulp longitudinal basis weight pulse attenuator, further improved structure pulp-inlet pipe is located at above the mixing channel.

Above-mentioned paper making pulp longitudinal basis weight pulse attenuator, preferred construction is to establish a manhole on mixing channel.

The beneficial effects of the utility model are:

1, the utility model is effectively eliminated concentration impulse in the constant part.The plain boiled water of short circulation is that the plain boiled water by variable concentrations mixes, and these plain boiled waters are to be used for diluting the underflow of sending here from proportional valve.The underflow from proportional valve and the mixing point of fan pump suction inlet plain boiled water are even well design also is difficult to avoid suction inlet to produce " cloud " of of short duration fluctuation of concentration.And the little minor swing of the white water consistency of short circulation also can produce fluctuation of concentration.The longitudinal basis weight pulse attenuator is installed on before the starching pump, and one section good slurry of slagging-off can fully mix when installing through this." advanced person not necessarily goes out earlier ".Guarantee the slurry stream of starching pump extraction concentration stabilize, to improve into the paper longitudinal basis weight.

2, the utility model can effectively be eliminated the pressure pulse that the short circulatory system is brought.Traditional papermaking process is not eliminated the equipment of pressure pulse, but the only import equipment of reliable costliness such as pressurized screen, is used for the generation pressure pulse of trying one's best few.And the pressure pulse that produces before the starching pump is not eliminated, and causes like this to have bought expensive equipment and but can't eliminate the influence to quality of finished paper that pressure pulse brings fully.

3, the utility model can make the papermaking cost reduce.This longitudinal basis weight pulse attenuator can effectively improve quality of finished paper, stops because the disconnected paper that pressure or fluctuation of concentration bring is enhanced productivity the papermaking cost significantly to be reduced.

4, the utility model can be simplified the outer back flow water pump of machine and make.For high-speed paper machine, must design starching pump, also make secondary dash slurry.If starching pump inlet also inserts the outer back flow water pump of machine, not only on making, have relatively high expectations, and machine outside in the back flow water pump secondary dash and starch, also have concentration affects each other.Just also be not so good as to use the utility model on the result of use.

Description of drawings:

Fig. 1 is a structural representation of the present utility model:

Fig. 2 is a vertical view of the present utility model;

Fig. 3 is an another kind of structural representation of the present utility model;

Fig. 4 is the vertical view of another kind of structure of the present utility model.

The specific embodiment:

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

Paper making pulp longitudinal basis weight pulse attenuator as depicted in figs. 1 and 2, comprise pulp-inlet pipe 1, establish current divider 2 on the pulp-inlet pipe 1, current divider 2 connects mixing channel 3, establish grout outlet 4 on the mixing channel 3, return duct 6 is established on the top of mixing channel 3, and such design makes underflow arrive mixing channel by pulp-inlet pipe through separator decompression back, thereby return duct 6 can be stablized the purpose that the interior slurries amount of mixing channel reaches stable slurry concentration.

Above-mentioned paper making pulp longitudinal basis weight pulse attenuator, the described pulp-inlet pipe 1 of further improved structure is located at below the mixing channel 3, and such design helps the good slurry that pulp-inlet pipe 1 comes in and obtain buffering in mixing channel, reaches stable concentration.

Above-mentioned paper making pulp longitudinal basis weight pulse attenuator is located at above the mixing channel 3 as the another kind of improved structure pulp-inlet pipe 1 of Fig. 3 and Fig. 4, and such design helps the good slurry that pulp-inlet pipe 1 comes in and obtain buffering in mixing channel, reaches stable concentration.

Above-mentioned paper making pulp longitudinal basis weight pulse attenuator, preferred construction as shown in figures 1 and 3 are to establish a manhole 5 on mixing channel 3, and such structure is convenient to clean mixing channel.

The course of work of the present utility model is, longitudinal basis weight pulse attenuator as depicted in figs. 1 and 2, and the good slurry that comes from proportional valve enters mixing channel 3 by pulp-inlet pipe 1 through current divider 2, and underflow obtains buffering 3 li of mixing channels and is extracted out by starching pump through grout outlet 4.

Claims (4)

1. paper making pulp longitudinal basis weight pulse attenuator, it is characterized in that: described quantitative pulse attenuator is established current divider (2) by pulp-inlet pipe (1) on the pulp-inlet pipe (1), and current divider (2) connects mixing channel (3), establish grout outlet (4) on the mixing channel (3), return duct (6) is established on the top of mixing channel (3).

2. paper making pulp longitudinal basis weight pulse attenuator according to claim 1 is characterized in that: pulp-inlet pipe (1) be located at mixing channel (3) below.

3. paper making pulp longitudinal basis weight pulse attenuator according to claim 1 is characterized in that: pulp-inlet pipe (1) be located at mixing channel (3) above.

4. according to claim 2 or 3 described paper making pulp longitudinal basis weight pulse attenuators, it is characterized in that: on mixing channel (3), establish a manhole (5).