CN210964942U

CN210964942U - Circulating device for stabilizing slurry concentration

Info

Publication number: CN210964942U
Application number: CN201921711450.6U
Authority: CN
Inventors: 宋杰; 汪锋; 徐刘焱; 高宽
Original assignee: Shanying International Holding Co Ltd
Current assignee: Shanying International Holding Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-10
Anticipated expiration: 2029-10-12

Abstract

The utility model provides a circulating device for stabilizing the concentration of slurry, which comprises a slurry storage tank, a discharge tank and a circulating pump; the volume of the discharge tank is smaller than that of the pulp storage tank; a stirring device is arranged in the slurry storage tank; the slurry storage tank is also provided with a first discharge pipe, a second discharge pipe, a third discharge pipe and a first feed pipe; the first discharge pipe, the second discharge pipe and the third discharge pipe are arranged on the side face of the slurry storage tank, and the horizontal heights of the first discharge pipe, the second discharge pipe and the third discharge pipe are reduced in sequence; the discharge tank is provided with a second feeding pipe, a fourth discharging pipe, a circulating feeding hole and a circulating discharging hole; one end of the second feeding pipe is connected with the first discharging pipe, the second discharging pipe and the third discharging pipe through a four-way pipe, and the other end of the second feeding pipe is communicated with the discharging tank; the circulating pump is arranged between the circulating feed inlet and the circulating discharge outlet.

Description

Circulating device for stabilizing slurry concentration

Technical Field

The utility model belongs to the technical field of papermaking, especially, relate to a circulating device for stabilizing thick liquids concentration.

Background

In the current paper-making enterprises, the pulp produced in the pulping workshops of the paper machine production lines is stored in a pulp storage tank and then is extracted and used by a paper machine. Under the full shut down of pulp storage tank and the plan shutdown state, because the pulp storage tank liquid level is high, the agitator can only stir a small part region in thick liquid tower bottom, easily produces the thick liquids layering phenomenon, and under the condition that no stuff pump lasts to send thick liquid to the thick liquid tower, the thick liquids concentration decline of pulp storage tank bottom after a period of time is obvious.

When the concentration of the pulp pumped by the pulp storage tank becomes low and cannot meet the requirements of paper machine production, the change of the concentration of the pulp is too large, so that the quantitative rate of the paper machine is greatly fluctuated, and the paper machine production is influenced by poor system control; most utilize the agitator stirring to mix thick liquids among the prior art, but the thick liquids storage tank liquid level is high, even the agitator stirring, still can appear thick liquids layering phenomenon, causes thick liquids concentration fluctuation big, influences papermaking technology.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a circulating device for stabilizing thick liquids concentration.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

a circulating device for stabilizing the concentration of slurry comprises a slurry storage tank, a discharge tank and a circulating pump; the volume of the discharge tank is smaller than that of the pulp storage tank; a stirring device is arranged in the slurry storage tank; the slurry storage tank is also provided with a first discharge pipe, a second discharge pipe, a third discharge pipe and a first feed pipe; the first discharge pipe, the second discharge pipe and the third discharge pipe are arranged on the side face of the slurry storage tank, and the horizontal heights of the first discharge pipe, the second discharge pipe and the third discharge pipe are reduced in sequence; the discharge tank is provided with a second feeding pipe, a fourth discharging pipe, a circulating feeding hole and a circulating discharging hole; one end of the second feeding pipe is connected with the first discharging pipe, the second discharging pipe and the third discharging pipe through a four-way pipe, and the other end of the second feeding pipe is communicated with the discharging tank; the circulating pump is arranged between the circulating feed inlet and the circulating discharge outlet.

As an improvement of the technical scheme, the pipe diameters of the first discharging pipe, the second discharging pipe and the third discharging pipe are equal.

As an improvement of the above technical solution, the stirring device includes a first stirring paddle and a second stirring paddle, the outer surface of the first stirring paddle is provided with a first blade, and the outer surface of the second stirring paddle is provided with a second blade; the first and second paddles are arranged in a helix.

As an improvement of the above technical solution, the first and second paddles have the same rotation direction, and the first and second paddles have opposite spiral directions.

The utility model has the advantages that:

1. the slurry storage tank with large volume is used for storing slurry, and the discharge tank with small volume is used for uniformly mixing the slurry flowing out of the slurry storage tank and then discharging the slurry to the next process;

2. the first discharging pipe, the second discharging pipe and the third discharging pipe are arranged on the side surface of the slurry storage tank at different heights, so that slurry at different heights in the slurry storage tank flows into the discharging tank through the first discharging pipe, the second discharging pipe and the third discharging pipe;

3. a circulating pump is arranged between the circulating feed port and the circulating discharge port of the discharge tank, so that when the discharge tank discharges slowly, the slurry in the tank is not layered;

4. the circulating pump is used for circulating the slurry in the small-volume circulating pump, so that energy is saved and the effect is better than the circulating pump is used for circulating the slurry in the large-volume slurry storage tank;

5. the pipe diameters of the first discharging pipe, the second discharging pipe and the third discharging pipe are equal, so that the volumes of the slurry flowing out of the slurry storage tanks at different levels are equal, and the mixed concentration is closer to the concentration of the slurry in the slurry storage tank when the slurry is not layered;

6. a stirring device is arranged in the slurry storage tank, so that when the slurry is slowly discharged, the stirring device is started to stir the slurry in the slurry storage tank, and the occurrence of layering is prevented or reduced;

7. the two spiral stirring paddles can be used for simultaneously stirring the upper layer slurry and the lower layer slurry in the slurry storage tank, so that the upper layer slurry and the lower layer slurry are mixed with each other, the mixing is more uniform, and the condition that the upper layer slurry cannot be stirred is avoided;

8. the rotation direction that sets up first stirring rake and second stirring rake is the same, and the spiral direction of first paddle and second paddle is opposite for the motion direction of thick liquids when the stirring under the effect of first stirring rake at the ascending motion direction of vertical direction and the thick liquids under the effect of second stirring rake is opposite, makes the thick liquids between first stirring rake and second stirring rake produce the striking, and the more even of mixing.

Drawings

Fig. 1 is a schematic structural diagram of a circulation device according to an embodiment of the present invention;

in the figure: the device comprises a slurry storage tank 10, a stirring device 11, a first discharge pipe 12, a second discharge pipe 13, a third discharge pipe 14, a first feed pipe 15, a first stirring paddle 16, a second stirring paddle 17, a first paddle 18, a second paddle 19, a discharge tank 20, a second feed pipe 21, a fourth discharge pipe 22, a circulating feed inlet 23, a circulating discharge outlet 24, a four-way pipe 25 and a circulating pump 30.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Examples

As shown in fig. 1, the circulation device for stabilizing the slurry concentration according to the present embodiment includes a slurry storage tank 10, a discharge tank 20, and a circulation pump 30; the volume of the discharge tank 20 is smaller than that of the pulp storage tank 10; a stirring device 11 is arranged in the slurry storage tank 10; the slurry storage tank 10 is also provided with a first discharge pipe 12, a second discharge pipe 13, a third discharge pipe 14 and a first feed pipe 15; the first discharge pipe 12, the second discharge pipe 13 and the third discharge pipe 14 are arranged on the side surface of the slurry storage tank 10, and the horizontal heights of the first discharge pipe 12, the second discharge pipe 13 and the third discharge pipe 14 are sequentially reduced; respectively used for extracting the upper layer slurry, the middle layer slurry and the bottom layer slurry in the slurry storage tank 10; the discharge tank 20 is provided with a second feeding pipe 21, a fourth discharging pipe 22, a circulating feeding hole 23 and a circulating discharging hole 24; one end of the second feeding pipe 21 is connected with the first discharging pipe 12, the second discharging pipe 13 and the third discharging pipe 14 through a four-way pipe 25, and the other end of the second feeding pipe is communicated with the discharging tank 20; the circulation pump 30 is arranged between the circulation feed opening 23 and the circulation discharge opening 24.

The prepared slurry enters the slurry storage tank 10 through the first feeding pipe 15 for storage, the slurry in the slurry storage tank 10 is stirred through the stirring device 11, flows out of the slurry storage tank 10 through the first discharging pipe 12, the second discharging pipe 13 and the third discharging pipe 14, flows into the discharging tank 20 from the second feeding pipe 21, the circulating pump 30 is started, so that the slurry in the discharging tank 20 flows out of the circulating discharging port 24 and flows into the circulating feeding port 23, circulation is completed, the slurry in the discharging tank 20 is uniformly mixed, and the layering condition cannot occur; when the next process requires slurry, the slurry in the discharge tank 20 flows out of the discharge tank 20 through the fourth outlet pipe 22 to the next process.

The pipe diameters of the first discharging pipe 12, the second discharging pipe 13 and the third discharging pipe 14 are equal, and the pipe diameter of the second feeding pipe 21 is not less than that of the first discharging pipe 12

And (4) doubling.

The stirring device 11 comprises a first stirring paddle 16 and a second stirring paddle 17, wherein a first blade 18 is arranged on the outer surface of the first stirring paddle 16, and a second blade 19 is arranged on the outer surface of the second stirring paddle 17; the first blade 18 and the second blade 19 are arranged in a spiral.

The first blade 18 and the second blade 19 have opposite spiral directions; the rotation directions of the first stirring paddle 16 and the second stirring paddle 17 are the same, and the spiral directions of the first blade 18 and the second blade 19 are opposite, so that the movement direction of the slurry in the vertical direction under the action of the first stirring paddle 16 is opposite to the movement direction of the slurry under the action of the second stirring paddle 17 during stirring, the slurry between the first stirring paddle 16 and the second stirring paddle 17 is impacted, and the mixing is more uniform.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A circulation device for stabilizing a slurry concentration, characterized in that: comprises a pulp storage tank (10), a discharge tank (20) and a circulating pump (30); the volume of the discharge tank (20) is smaller than that of the pulp storage tank (10); a stirring device (11) is arranged in the slurry storage tank (10); the slurry storage tank (10) is also provided with a first discharge pipe (12), a second discharge pipe (13), a third discharge pipe (14) and a first feed pipe (15); the first discharge pipe (12), the second discharge pipe (13) and the third discharge pipe (14) are arranged on the side surface of the slurry storage tank (10), and the horizontal heights of the first discharge pipe (12), the second discharge pipe (13) and the third discharge pipe (14) are reduced in sequence; the discharge tank (20) is provided with a second feeding pipe (21), a fourth discharging pipe (22), a circulating feeding hole (23) and a circulating discharging hole (24); one end of the second feeding pipe (21) is connected with the first discharging pipe (12), the second discharging pipe (13) and the third discharging pipe (14) through a four-way pipe (25), and the other end of the second feeding pipe is communicated with the discharging tank (20); and the circulating pump (30) is arranged between the circulating feed inlet (23) and the circulating discharge outlet (24).

2. A circulation device for stabilizing a slurry concentration according to claim 1, characterized in that: the pipe diameters of the first discharging pipe (12), the second discharging pipe (13) and the third discharging pipe (14) are equal.

3. A circulation device for stabilizing a slurry concentration according to claim 2, characterized in that: the stirring device (11) comprises a first stirring paddle (16) and a second stirring paddle (17), wherein a first blade (18) is arranged on the outer surface of the first stirring paddle (16), and a second blade (19) is arranged on the outer surface of the second stirring paddle (17); the first blade (18) and the second blade (19) are arranged in a spiral.

4. A circulation device for stabilizing a slurry concentration according to claim 3, characterized in that: the rotating directions of the first stirring paddle (16) and the second stirring paddle (17) are the same, and the spiral directions of the first paddle (18) and the second paddle (19) are opposite.