CN2435418Y

CN2435418Y - Air-extacting black liquid extractor

Info

Publication number: CN2435418Y
Application number: CN 00230272
Authority: CN
Inventors: 刘润泽; 杨祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-29
Filing date: 2000-06-29
Publication date: 2001-06-20
Anticipated expiration: 2010-06-29

Abstract

The utility model relates to a clockwise pumping type liquor extracting device composed of an air outlet cylinder body, and a liquor inlet receiving pipe I, wherein, the upper part of the liquor inlet receiving pipe is provided with an air pumping device. The utility model uses a structure that the direction of air pumping is uniform with the flow direction of black liquor to pump air and help the black liquor to flow, and meantime, the utility model eliminates the foam of the black liquor, enhances the vacuum degree of a vacuum pulp washing machine, reduces power consumption and the loss amount of the black liquor, and provides a simple, practical, and high-efficiency auxiliary device for the extraction and defoaming treatment of black liquor for paper-making industry, particularly alkaline pulping operation.

Description

A kind of air-extacting black liquid extractor

The utility model belongs to papermaking, particularly extracts the defoaming treatment equipment of straw pulp black liquor during soda pulping process.

In paper industry was produced, when adopting soda pulping process, the vacuum pulp washing was present pulp washing and extracts the normal scheme that adopts of black liquor; Washing pulp and extraction black liquor are to rely on vacuum that the pressure differential of the inside and outside generation of slurry layer is finished the work; Therefore, gas clean-up is to improve the efficient of wash engine and the effective ways of extraction rate of black liquor; The normal at present method that adopts has: vavuum pump forces to vacuumize, regurgitate the black liquor method.Regurgitating the black liquor method is the vacuum that potential difference, flow velocity, flow when utilizing black liquor to discharge produce, and adds on the top of water leg pipe usually and regurgitates black liquor, and the negative pressure that flow is big, flow velocity is fast, produce is just high; Because of need taking out black liquor to the height more than the 15m from ground black liquor groove, so power consumption is big, and is unsatisfactory to the effect of gas clean-up; Forcing to vacuumize with vavuum pump is the traditional handicraft that China has used decades, but the shortcoming of this technology is that power consumption is big, the black liquor bleed amount is many etc.Fig. 1 is that to force the schematic diagram bleed, the vacuum in the vacuum pulp washing machine be to abut against the air that the vavuum pump on the water leg pipe (2) extracts wherein to achieve the goal to vavuum pump; Because the import of vavuum pump and the black liquor flow direction in the water leg pipe (2) have a certain degree, so vavuum pump has also hindered flowing of black liquor in extracting air; Therefore need a kind of can extracting air, can help the machinery that black liquor flows to reduce power consumption, reduce the black liquor bleed amount again, can also eliminate the equipment of black liquor foam.

The purpose of this utility model just provides a kind of air-extacting black liquid extractor.

For reaching this purpose, inventive concept of the present utility model is that the direction of extracting air is consistent with the flow direction of black liquor.In extracting air, also help flowing of black liquor like this, thereby reduced power consumption, reduced the number of dropouts of black liquor, realized the purpose of this utility model.

For finishing inventive concept of the present utility model, the utility model is made up of air-out cylindrical shell (4), feed liquor adapter I (6), it is characterized in that: feed liquor adapter I (6) is installed on the tube surface of air-out cylindrical shell (4), and the (see figure 2) that is interconnected.During work, the bottom of the utility model air-out cylindrical shell (4) is fixed in the black liquor groove (8), and the black liquor in the water leg pipe (2) is taken over I (6) from feed liquor and flowed out, and flows in the black liquor groove (8) through air-out cylindrical shell (4); When the exhaust equipment (3) on being installed in air-out cylindrical shell (4) is worked, exhaust equipment (3) is taken the gas in the interior black liquor of air-out cylindrical shell (4) away, at this moment the pressure in the air-out cylindrical shell (4) is lower than water leg pipe (2) internal pressure, impelled the interior black liquor of water leg pipe (2) to take over I (6) and quickened to flow to air-out cylindrical shell (4), therefore improved the vacuum in the vacuum pulp washing machine through feed liquor.Owing in the air-out cylindrical shell (4) one negative pressure is arranged, the air in the interior black liquor of water leg pipe (2) is very fast to be separated from black liquor simultaneously, has also realized eliminating the purpose of black liquor foam, thereby has realized inventive concept of the present utility model.

The utility model is owing to adopted the scheme that the direction of extracting air is consistent with the flow direction of black liquor, in extracting air, also helped flowing of black liquor, improved the vacuum in the vacuum pulp washing machine, thereby reduce power consumption, reduced the number of dropouts of black liquor, be paper industry, particularly during soda pulping process, a kind of simple, practical, the extraction and the defoaming treatment equipment of black liquor are efficiently provided.

The schematic diagram that the pressure of Fig. 1 vavuum pump vacuumizes

1. vacuum pulp washing machine 2. water leg pipes

Fig. 2 air-extacting black liquid extractor structure chart

3. exhaust equipment 4. air-out cylindrical shells 5. sealed cylinders 6. feed liquors are taken over I

7. feed liquor is taken over II 8. black liquor grooves 9. intercommunicating pores

Fig. 3 spinning liquid structure chart

4. air-out cylindrical shell 6. feed liquors are taken over I

Fig. 4 uses the structure chart of two or more movable flow devices

3. exhaust equipment 10. movable flow devices

When reality was used, exhaust equipment (3) adopted air exhauster or vavuum pump to meet the demands.Because it is very high that exhausting pressure does not need, exhaust equipment (3) is a kind of good scheme with air exhauster; Do not adopt vavuum pump, therefore just can save investment, saved power consumption, improve efficient.

Extract the efficient that enters the air in the interior black liquor of air-out cylindrical shell (4) in order to improve, the geometric position of feed tube I of the present utility model (6) on air-out cylindrical shell (4) is axis or perimeter line and the air-out cylindrical shell (4) tangent (as shown in Figure 3) that feed liquor is taken over I (6).Like this, the black liquor that tangentially enters air-out cylindrical shell (4) from feed liquor adapter I (6) descends along the cylindrical shell curl, and black liquor just can enter in the black liquor groove (8) reposefully, and the foam of generation is just few; Because the effect that rotation separates, gas is very fast to be separated from black liquor, so the air in the black liquor is just easier is siphoned away by exhaust equipment (3), thereby has realized that black liquor cuts the purpose of bubble.

In vertical direction, the axis normal of the feed liquor axis of taking over I (6) and air-out cylindrical shell (4) or make progress less than 90 °.

When work, because the effect of the exhaust equipment on air-out cylindrical shell (4) top, so the liquid level in the air-out cylindrical shell (4) is higher than the height (see figure 2) in the black liquor groove (8).Enter black liquor in the air-out cylindrical shell (4) and enter black liquor groove (8) bottom falling into by deadweight and take over I (6) from feed liquor.In order to guarantee that the air in the black liquor is siphoned away by exhaust equipment (3), the position that feed liquor is taken over I (6) should be higher than the height of the interior liquid level of air-out cylindrical shell (4), and maintains a certain distance.

When reality was used, exhausting pressure did not need very high, and exhaust equipment (3) just can meet the demands with air exhauster.Owing to do not adopt vavuum pump, therefore both saved investment and saved power consumption yet.

Install in the black liquor groove (8) bottom at air-out cylindrical shell (4), also has groove or hole (seeing the intercommunicating pore (9) on Fig. 2) in the bottom of air-out cylindrical shell (4).Its objective is and guarantee that air-out cylindrical shell (4) is communicated with black liquor groove (8).

When reality is used, adopt two or more movable flow devices (10) to use (see figure 4) to be called the combined type movable flow device simultaneously more.At this moment the top of each movable flow device (10) connects an exhaust equipment (3) after being communicated with pipe again.Under normal conditions, between movable flow device (10) and the exhaust equipment (3) gas-liquid separator is installed also.

Claims

1. an air-extacting black liquid extractor is taken over I (6) by air-out cylindrical shell (4), feed liquor and formed, and it is characterized in that: feed liquor adapter I (6) is installed on the tube surface of air-out cylindrical shell (4), and is interconnected.

2. by the described air-extacting black liquid extractor of claim 1, it is characterized in that: the bottom of air-out cylindrical shell (4) is fixed in the black liquor groove (8), and exhaust equipment (3) is installed in air-out cylindrical shell (4) top.

3. by the described air-extacting black liquid extractor of claim 2, it is characterized in that: exhaust equipment (3) is air exhauster or vavuum pump.

4. by the described air-extacting black liquid extractor of claim 1, it is characterized in that: the axis of feed liquor adapter I (6) or perimeter line and air-out cylindrical shell (4) are tangent.

5. by claim 1 or the described air-extacting black liquid extractor of claim 4, it is characterized in that: in vertical direction, the axis that feed liquor is taken over I (6) is with the axis normal of air-out cylindrical shell (4) or make progress less than 90 °.

6. by claim 1 or the described air-extacting black liquid extractor of claim 4, it is characterized in that: the position of feed liquor adapter I (6) should be higher than the height of the interior liquid level of air-out cylindrical shell (4).

7. by claim 1 or the described air-extacting black liquid extractor of claim 3, it is characterized in that: install in the black liquor groove (8) bottom at air-out cylindrical shell (4), also has groove or hole in the bottom of air-out cylindrical shell (4).