CN203281079U - Vacuum degasifier - Google Patents
Vacuum degasifier Download PDFInfo
- Publication number
- CN203281079U CN203281079U CN2013203026907U CN201320302690U CN203281079U CN 203281079 U CN203281079 U CN 203281079U CN 2013203026907 U CN2013203026907 U CN 2013203026907U CN 201320302690 U CN201320302690 U CN 201320302690U CN 203281079 U CN203281079 U CN 203281079U
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- vacuum
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- lower shell
- feed pipe
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- Degasification And Air Bubble Elimination (AREA)
Abstract
The utility model provides a vacuum degasifier, which comprises a lower cylinder body and an upper cylinder body. The bottom of the lower cylinder body is provided with a discharge port, and the top of the upper cylinder body is provided with a manhole, a cleaning port and a degasifier vacuum pumping port. The vacuum degasifier is characterized in that the lower cylinder body is internally provided with a feed pipe, one end of which is a feed inlet and the other end of which is an upper outflow port, wherein the feed inlet is arranged at the lower part or bottom of the lower cylinder body, and the upper outflow port is arranged at the upper part of the lower cylinder body; and the inner diameter of the upper cylinder body is larger than the outer diameter of the lower cylinder body. The vacuum degasifier obtained in the utility model ensures the flow rate of a passing fluid and the liquid level of the vacuum degasifier, and also enables the insufficiently degassed fluid to spill back into the system. Under the circumstance of an equal scale, the vacuum degasifier provided in the utility model can greatly reduce the content of bubbles in the fluid, reduces the power consumption of a vacuum pump, and reduces the whitewater pool volume.
Description
Technical field
The utility model belongs to the pulping and paper-making field, a kind of online slurry or reuse plain boiled water to be carried out the degassed foam that reduces the online slurry, increase the stable of whole flow apperach, increase the water separation capability of wet end, improve the drying capacity of drying cylinder, reduce the paper defect of paper, improve the vacuum degasifer of paper quality.
Background technology
The reason that produces bubble in the slurrying paper-making process has a lot, the air leak of stock pump, the stock trough agitator whipping process is brought air into slurry, the layout of slurry pipe and white water pipe is unreasonable, and the various chemicals that add with wet end of machine in pulping process also can produce a large amount of bubbles along with the reuse of plain boiled water circulation and broken.Bubble has two kinds of forms: a kind of is exist between fiber and fiber or be attached to free bubble on fiber, and a kind of is be dissolved in water or be adsorbed on the bubble of being combined with fiber on fiber.Free bubble is the main cause that produces foam., for the different reasons of Bubble formation, can adopt the multiple method that prevents and eliminate bubble: as mechanical defoaming, steam froth breaking, chemical froth breaking, vacuum froth breaking.The constant part of now domestic and international high speed paper machine, all adopt vacuum froth breaking mode, all is equipped with vacuum degasser.The vacuum froth breaking is to utilize gas-liquid dividing potential drop equilibrium principle, in the situation that temperature is certain, by producing vacuum, the absolute pressure of slurry, water surface is reduced to the saturated vapor air pressure near at this temperature, make be dissolved in water or be adsorbed on fiber air separate from liquid, thereby make gas overflow reduce the air content of constant part.Two key factors of vacuum degasifer are the flow velocity of the fluid that passes through and the size of vacuum wherein.It is to advance slurry or directly advance slurry from bottom from upper tangential that existing vacuum degasifer advances slurry, and fluid time of staying in degasser is very short, can't allow bubble that sufficient time of liberation is arranged, and also can't reduce the impurity in fluid simultaneously, improves the cleanliness of fluid.
The utility model content
The purpose of this utility model is to provide a kind of increase fluid time of staying in degasser for the deficiency that solves above-mentioned technology, and the froth breaking degasifying effect is good, and can improve the vacuum degasifer of fluid cleanliness.
The vacuum degasifer that the utility model is designed, comprise lower shell and upper shell, the bottom of lower shell is provided with discharging opening, the top of upper shell is provided with manhole, Butterworth Hatch and degasser vacuum orifice, be provided with feed pipe in lower shell, an end of described feed pipe is charging aperture, and the other end is the top flow export, wherein charging aperture is arranged on bottom or the bottom of lower shell, and the top flow export is arranged on the top of lower shell; Described upper shell internal diameter is greater than the external diameter of lower shell.Said structure utilizes special feed pipe setting, makes fluid form first up and then down loop in degasser, increases the time of fluid in degasser,, by strengthening the upper shell internal diameter, increases the degassed area in fluid top simultaneously, improves degasifying effect and efficiency.
As preferred version, in order to prevent that the foam return that the degasser internal upper part gathers is provided with lower shoe to the bottom of upper shell described in clean slurry, barrel by its lower shoe and lower shell is connected to form confined space, the lower shell barrel, higher than lower shoe plane of living in, makes between lower shell outer wall and upper shell inwall and forms an annulus.Described lower shoe is from the horizontal by angle to lopsidedness, at lower shoe, is provided with overfall on than the upper shell barrel of downside, and overfall is connected with overflow tank, and at the overflow tank top, is provided with the overflow tank vacuum orifice.This design feature is, the effect of utilizing fluid to gush out from the cylindrical shell center, make foam and impurity accumulate in annulus between upper shell and lower shell, stop by lower shell and flow out, and by the angle of inclination effect of lower shoe, foam and impurity are directly flowed out by overfall.The angle of wherein said lower shoe and horizontal direction is 1-5 °.
, as preferred version, be equipped with pressure reducing orifice on described charging aperture and top flow export, and described top flow export bore is greater than the feed pipe internal diameter, to reduce the flow velocity of fluid.Be connected by horn-like structure or stepped construction transition between feed pipe bottom and its top flow export.
The resulting vacuum degasifer of the utility model, fluid enters by feed pipe from the degasser bottom, to top, overflows, flow from top to bottom again, bubble approaches the boiling shape and overflows under vacuum state on top, unique structure of advancing gassiness slurry (or plain boiled water), guaranteed the flow velocity by fluid.When the part water degasification is insufficient, connect an overflow tank overflow by overfall, can guarantee the liquid level of vacuum degasifer, degassed inadequate fluid is overflow get back in system.In the same size situation, vacuum degasifer of the present utility model can reduce the air bubble content in fluid widely, reduces the power consumption of vavuum pump, reduces the volume of white water chest.
Description of drawings
Fig. 1 is the resulting structural representation of the utility model.
Fig. 2 is the structural representation of lower pressure reducing orifice in the utility model;
Fig. 3 is the structural representation of upper pressure reducing orifice in the utility model;
Wherein: 1. discharging opening; 2. feed pipe; 3-1. lower pressure reducing orifice; 3-2. upper pressure reducing orifice; 4. lower shell; 5. horn-like structure; 6. upper shell; 7. manhole; 8. Butterworth Hatch; 9. degasser vacuum orifice; 10. overfall; 11. overflow pipe vacuum orifice; 12. top flow export; 13. overflow tank; 14. charging aperture; 15. lower shoe.
The specific embodiment
A kind of vacuum degasifer, comprise lower shell 4 and upper shell 6, and the bottom of lower shell 4 is provided with discharging opening 1, and the top of upper shell 6 is provided with manhole 7, Butterworth Hatch 8 and the degasser vacuum orifice 9 for people's turnover; Be provided with feed pipe 2 in lower shell 4, an end of feed pipe 2 is charging aperture 14, and the other end is top flow export 12, and wherein charging aperture 14 is arranged on bottom or the bottom of lower shell 4, and top flow export 12 is arranged on the top of lower shell 4; Upper shell 6 internal diameters are greater than the external diameter of lower shell 4.
Upper shell 6 bottoms are provided with lower shoe 15, by its lower shoe 15 and the barrel of lower shell 4, are connected to form confined space, and lower shell 4 barrels, higher than lower shoe 15 plane of living in, make between lower shell outer wall and upper shell inwall and form an annulus.Lower shoe 15 is from the horizontal by angle to lopsidedness, at lower shoe, is provided with overfall 10 on than the upper shell of downside 6 barrels, and overfall 10 is connected with overflow tank 13, and at overflow tank 13 tops, is provided with overflow tank vacuum orifice 11.Wherein the angle of lower shoe and horizontal direction is 1-5 °.Charging aperture 14 is provided with lower pressure reducing orifice 3-1, and top flow export 12 is provided with pressure reducing orifice 3-2, lays through hole on pressure reducing orifice, and the size in hole and density can need design according to decompression, and described top flow export 12 bores are greater than feed pipe 2 internal diameters.Be connected by horn-like structure 5 between the bottom of feed pipe 2 and its top flow export 12.
In the course of work, fluid enters cylindrical shell by the charging aperture 14 of feed pipe 2, and fluid is degassed 1 outflow of discharging opening by lower shell 4 in first up and then down loop in degasser.And the effect that this kind vacuum degasifer utilizes fluid to gush out from the cylindrical shell center, make foam and impurity accumulate in annulus between upper shell 6 and lower shell 4, stop by lower shell 4 and flow out, and by the angle of inclination effect of lower shoe 15, foam and impurity are directly flowed out by overfall 10, prevent that foam return that the degasser internal upper part gathers is in clean slurry, can guarantee the liquid level in vacuum degasifer, degassed inadequate fluid is overflowed, turn back to last workshop section, guarantee that in slurry out, air content reduces greatly.
Claims (6)
1. vacuum degasifer, comprise lower shell and upper shell, the bottom of lower shell is provided with discharging opening, the top of upper shell is provided with manhole, Butterworth Hatch and degasser vacuum orifice, it is characterized in that in lower shell being provided with feed pipe, an end of described feed pipe is charging aperture, and the other end is the top flow export, wherein charging aperture is arranged on bottom or the bottom of lower shell, and the top flow export is arranged on the top of lower shell; Described upper shell internal diameter is greater than the external diameter of lower shell.
2. vacuum degasifer according to claim 1, it is characterized in that the upper shell bottom is provided with lower shoe, barrel by its lower shoe and lower shell is connected to form confined space, the lower shell barrel is higher than lower shoe plane of living in, described lower shoe is from the horizontal by angle to lopsidedness, be provided with overfall at lower shoe on than the upper shell barrel of downside, overfall is connected with overflow tank, and at the overflow tank top, is provided with the overflow tank vacuum orifice.
3. vacuum degasifer according to claim 2, the angle that it is characterized in that described lower shoe and horizontal direction is 1-5 °.
4. according to claim 1 and 2 or 3 described vacuum degasifers, is characterized in that being equipped with pressure reducing orifice on described charging aperture and top flow export, and described top flow export bore is greater than the feed pipe internal diameter.
5. be connected by horn-like structure or stepped construction between according to claim 1 and 2 or 3 described vacuum degasifers, the bottom that it is characterized in that described feed pipe and its top flow export.
6. be connected by horn-like structure or stepped construction between vacuum degasifer according to claim 4, the bottom that it is characterized in that described feed pipe and its top flow export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203026907U CN203281079U (en) | 2013-05-29 | 2013-05-29 | Vacuum degasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203026907U CN203281079U (en) | 2013-05-29 | 2013-05-29 | Vacuum degasifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203281079U true CN203281079U (en) | 2013-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203026907U Expired - Lifetime CN203281079U (en) | 2013-05-29 | 2013-05-29 | Vacuum degasifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN203281079U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050932A (en) * | 2017-06-06 | 2017-08-18 | 利穗科技(苏州)有限公司 | Double buffering type bubble trap |
| CN107648888A (en) * | 2017-10-13 | 2018-02-02 | 中石化广州工程有限公司 | Air separator and gas-liquid separating method for gas-liquid separation |
| CN111228849A (en) * | 2020-02-18 | 2020-06-05 | 中国科学院青岛生物能源与过程研究所 | External circulation slurry bed reaction crystallizer |
| CN112973196A (en) * | 2021-03-15 | 2021-06-18 | 江苏大航有能输配电有限公司 | Method for vacuum defoaming of high-viscosity liquid by using pressure difference and aerodynamic force generated by gas in liquid |
-
2013
- 2013-05-29 CN CN2013203026907U patent/CN203281079U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107050932A (en) * | 2017-06-06 | 2017-08-18 | 利穗科技(苏州)有限公司 | Double buffering type bubble trap |
| CN107648888A (en) * | 2017-10-13 | 2018-02-02 | 中石化广州工程有限公司 | Air separator and gas-liquid separating method for gas-liquid separation |
| CN107648888B (en) * | 2017-10-13 | 2019-10-22 | 中石化广州工程有限公司 | Air separator and gas-liquid separating method for gas-liquid separation |
| CN111228849A (en) * | 2020-02-18 | 2020-06-05 | 中国科学院青岛生物能源与过程研究所 | External circulation slurry bed reaction crystallizer |
| CN112973196A (en) * | 2021-03-15 | 2021-06-18 | 江苏大航有能输配电有限公司 | Method for vacuum defoaming of high-viscosity liquid by using pressure difference and aerodynamic force generated by gas in liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310004 No. 1 Stadium Road, Hangzhou City, Zhejiang Province Patentee after: HMEI MACHINERY & ENGINEERING CO. Address before: 310004 No. 1 Stadium Road, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU PROJECT & Research Institute OF ELECTRO MECHANIC IN LIGHT INDUSTRY |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 428, building 4, No. 970-1, Gaojiao Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: HMEI MACHINERY & ENGINEERING Co. Address before: 310004 No. 1, Stadium Road, Hangzhou, Zhejiang Patentee before: HMEI MACHINERY & ENGINEERING Co. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
|
| CX01 | Expiry of patent term |