CN112779608A - Deaeration tower and spinning dope deaeration device - Google Patents
Deaeration tower and spinning dope deaeration device Download PDFInfo
- Publication number
- CN112779608A CN112779608A CN201911065466.9A CN201911065466A CN112779608A CN 112779608 A CN112779608 A CN 112779608A CN 201911065466 A CN201911065466 A CN 201911065466A CN 112779608 A CN112779608 A CN 112779608A
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- Prior art keywords
- tower
- defoaming
- conical surface
- flange
- film forming
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/103—De-aerating
Abstract
The invention provides a defoaming tower and a spinning solution defoaming device, wherein the defoaming tower comprises an upper end enclosure, a lower end enclosure and an adjusting gasket positioned between the upper end enclosure and the lower end enclosure; wherein: the upper end enclosure consists of a top tank body and an upper flange arranged at an opening at the bottom of the top tank body, and the lower surface of the upper flange is provided with a first groove for placing a first sealing rubber ring; the lower end socket consists of a conical cylinder and a lower flange arranged at the middle large opening end of the conical cylinder, the upper surface of the lower flange is provided with a second groove for placing a second sealing rubber ring and a first film forming flow channel positioned at the inner side of the second groove, and the side wall of the lower flange is provided with a liquid inlet communicated with the first film forming flow channel; the adjusting gasket is positioned between the first sealing ring and the second sealing ring; a second film forming flow passage communicated with the first film forming flow passage is formed between the upper flange and the lower flange. The method has short time consumption in the defoaming process, and obviously improves the defoaming effect of the micro-bubbles by forming the stock solution into the film through the film forming flow channel.
Description
Technical Field
The invention belongs to the field of deaeration of chemical fiber spinning solution, and particularly relates to a deaeration tower and a spinning solution deaeration device.
Background
The defoaming method of the spinning solution in the prior art is that the solution slowly circulates in a storage tank for a long time, and bubbles in the solution slowly float upwards and escape from the liquid level.
The prior art is not enough: 1) the defoaming process is slow, the time consumption is long, and a storage tank with a large volume is needed; 2) because the spinning solution is viscous, the floating speed of the tiny bubbles is slow, the bubbles can not escape from the solution surface in the retention time of the solution storage tank, and the defoaming effect of the tiny bubbles is poor.
Disclosure of Invention
Features and advantages of the invention will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.
In order to overcome the problems in the prior art, the invention provides a defoaming tower, which comprises an upper end enclosure, a lower end enclosure and an adjusting gasket positioned between the upper end enclosure and the lower end enclosure; wherein:
the upper end enclosure consists of a tank body with a top and an upper flange arranged at an opening at the bottom of the tank body with the top, and a first groove for placing a first sealing rubber ring is arranged on the lower surface of the upper flange;
the lower end socket consists of a conical cylinder and a lower flange arranged at a middle and large opening end of the conical cylinder, a second groove for placing a second sealing rubber ring and a first film forming flow channel positioned on the inner side of the second groove are formed in the upper surface of the lower flange, and a liquid inlet communicated with the first film forming flow channel is formed in the side wall of the lower flange;
the adjusting gasket is positioned between the first sealing ring and the second sealing ring; and a second film forming flow passage communicated with the first film forming flow passage is formed between the upper flange and the lower flange.
Optionally, the inner wall of the upper flange is provided with a vertical cylindrical surface and a conical surface, and a step is arranged between the vertical cylindrical surface and the conical surface, so that the diameter of the conical surface is smaller than that of the vertical cylindrical surface; the open end of the bottomed cylinder is in contact with and fixed to the step.
Optionally, the tapered surface extends downwardly to form an annular protrusion.
Optionally, the second film-forming flow passage includes a horizontal slit between the upper flange and the lower flange and an inclined slit between the annular protrusion and an inner wall of the lower flange.
Optionally, the inner wall of the lower flange has a first conical surface and a second conical surface, and a step is provided between the first conical surface and the second conical surface, so that the diameter of the first conical surface is smaller than that of the second conical surface; the large opening end of the conical cylinder body is contacted and fixed with the step.
Optionally, the defoaming tower comprises a main pipeline and n layers of symmetrical branched pipes, the main pipeline is connected with the center of the symmetrical branched pipe of the first layer, two ends of the symmetrical branched pipe of the first layer are connected with the center of the symmetrical branched pipe of the second layer, and so on, two ends of the symmetrical branched pipe of the nth layer are connected with two adjacent liquid inlet holes.
Optionally, the number of the liquid inlet holes is 2nAnd (4) respectively.
Optionally, the symmetrical branched pipes of the nth layer are provided with a pressure gauge and a regulating valve on two sides.
The invention provides a spinning dope defoaming device, comprising:
the invention provides a debubbling tower in any embodiment;
the gas-liquid separator is connected with the top of the defoaming tower;
the vacuum system is connected with the gas-liquid separator;
and the buffer tank is connected with the bottom of the defoaming tower.
Optionally, the negative pressure in the deaeration tower is interlockingly adjusted and controlled by a vacuum adjusting valve at the top of the gas-liquid separator and a deaeration tower top pressure transmitter.
The invention provides a defoaming tower and a spinning stock solution defoaming device, which are short in time consumption in a defoaming process and remarkably improve the defoaming effect of micro bubbles by forming a stock solution into a film.
Drawings
Fig. 1 is a schematic structural diagram of a defoaming tower provided in an embodiment of the present invention.
Fig. 2 is a side view of a defoaming tower according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a lower flange according to an embodiment of the present invention.
Fig. 4 is a quarter sectional view of an upper flange provided in an embodiment of the present invention.
Fig. 5 is a quarter sectional view of a lower flange provided in an embodiment of the present invention.
Fig. 6 is a quarter sectional view of an upper flange and a lower flange assembled together according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a dope degassing apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 to 6, the present invention provides a defoaming tower, which includes an upper head 10, a lower head 20, and a regulating gasket 30 located between the upper head 10 and the lower head 20. The top of the deaeration tower can be provided with an auxiliary instrument for detecting parameters such as temperature, pressure, liquid level and the like in the deaeration tower.
The upper end enclosure 10 is composed of a top tank body and an upper flange arranged at the bottom opening of the top tank body, and in the embodiment, the top tank body is conical. The tank body with the top and the upper flange are fixedly connected together in a welding mode. The lower surface of the upper flange is provided with an annular first groove 11, and the first groove 11 is used for placing a first sealing rubber ring 1.
The inner wall of the upper flange is provided with a vertical cylindrical surface 12 and a conical surface 14 from top to bottom, a step protruding towards the central axis of the upper flange is arranged between the vertical cylindrical surface 12 and the conical surface 14, the diameter of the vertical cylindrical surface is larger than that of the conical surface 14, the conical surface 14 is a conical surface corresponding to an inverted cone, the opening end of the tank body with the top is positioned on the step, and part of the outer wall of the tank body is contacted with the vertical cylindrical surface 12. Preferably, the lower surface of the upper flange is provided with an annular protrusion 13 inside the first groove 11, and the annular protrusion 13 is formed by extending a tapered surface 14 downward.
The lower end enclosure 20 is composed of a conical cylinder and a lower flange arranged at the large opening end of the conical cylinder. The conical cylinder body and the lower flange are fixedly connected together by welding. In order to make the inner wall of the lower end enclosure 20 form a smooth conical surface, the inner wall of the lower flange is provided with a first conical surface 22 and a second conical surface 24 from top to bottom, a step is arranged between the first conical surface 22 and the second conical surface 24, and the step makes the second conical surface close to the outer wall of the lower flange, namely the diameter of the first conical surface is smaller than that of the second conical surface 24.
The first conical surface 22 can smoothly transit with the inner wall of the conical cylinder body to form a film uniformly, and the second conical surface 24 is contacted with part of the outer wall of the conical cylinder body and fixedly connected together. The first tapered surface 22 and the second tapered surface 24 are tapered surfaces corresponding to reverse tapers.
The upper surface of the lower flange is provided with an annular second groove 21 for placing the second seal rubber ring 2. The annular adjusting gasket 30 is clamped between the first sealing rubber ring 1 and the second sealing rubber ring 2 of the upper end socket and the lower end socket, and stock solution is effectively prevented from flowing out of the tower. The upper flange and the lower flange are provided with bolt through holes which correspond to each other, and the upper seal head and the lower seal head are fixed together through fixing bolts. In this embodiment, the width of the ring-shaped adjusting washer 30 is larger than the grooves 11 and 22, and the outer diameter is slightly smaller than the circle of the fixing bolt. In another embodiment of the present invention, the annular adjusting shim 30 may also be provided with a through hole for passing a fixing bolt.
The upper surface of the lower flange is also provided with an annular first film forming flow passage 23, and the first film forming flow passage 23 is an annular groove and is arranged on the inner side of the second groove 21. The side wall of the lower flange is provided with a plurality of liquid inlet holes 25 communicated with the first film forming flow channel 23, and the annular adjusting gasket 30 does not cover the first film forming flow channel 23, so that after the assembly is completed, a uniform and continuous narrow gap is formed between the upper end socket and the lower end socket to serve as a second film forming flow channel 27, and more specifically, the second film forming flow channel 27 comprises a horizontal narrow gap between the lower surface of the upper flange and the upper surface of the lower flange and an inclined narrow gap between the annular bulge 13 on the upper flange and the first conical surface 22 of the lower flange.
The width of the second film forming flow channel 27 (mainly, a horizontal narrow slit) can be adjusted by the thickness of the adjusting gasket 30 between the upper and lower seal heads, and the stock solution is guided by the first film forming flow channel and the second film forming flow channel 27, is spread into a uniform film, and flows down along the wall of the defoaming tower. And because the upper flange is provided with the protrusion 13, the protrusion 13 can prevent the stock solution from upwelling, so that the stock solution can flow down along the inner wall of the lower end socket.
In this embodiment, the liquid inlet hole 25 is 2nN is preferably 2 or 3, and the number of the corresponding liquid inlet holes is 4 or 8. The plurality of liquid inlet holes are uniformly distributed around the lower head, more specifically, along the outer wall of the lower flange, and generally, the liquid inlet holes 25 may be disposed perpendicular to the first film forming flow channel 23.
The stock solution sequentially passes through the main pipeline 41, the multiple layers of symmetrical branched pipes 42, 43 and 44 and the liquid inlet hole 25 to enter the top of the defoaming tower, the number of the layers of the symmetrical branched pipes is set according to the number of the liquid inlet holes, more specifically, the number of the liquid inlet holes 25 is 2nAnd n corresponding layers. The center of the symmetrical branched pipe of the first layer is connected with the main pipeline, and the two ends of the symmetrical branched pipe of the first layer are respectively connected with the center of the symmetrical branched pipe of the second layer; two ends of the symmetrical branched pipes on the second layer are respectively connected with the centers of the symmetrical branched pipes on the third layer, and by analogy, two ends of the symmetrical branched pipes on the topmost layer, namely the nth layer, are respectively connected with two adjacent liquid inlet holes. As can be seen, the number of symmetrical branched pipes per layer is 2n-1And (4) respectively.
In this embodiment, the number of the liquid inlet holes 25 is 8, so the number of the corresponding symmetrical branch pipes is 3, the center of the symmetrical branch pipe 42 located at the first layer is connected to the main pipeline 41, two ends of the symmetrical branch pipe 42 are respectively connected to the center of the symmetrical branch pipe 43 located at the second layer, two ends of the symmetrical branch pipe 43 located at the second layer are respectively connected to the center of the symmetrical branch pipe 44 located at the third layer, two ends of the symmetrical branch pipe 44 located at the third layer are respectively connected to two adjacent liquid inlet holes 25, and thus the distance that the stock solution passes through when entering each liquid inlet hole is equal.
Under the symmetrical branched piping mode, the length of a pipeline through which stock solution passes from a liquid supply main pipe to each liquid inlet of the defoaming tower and the number and the form of pipe fittings through which the stock solution passes are the same, so that the uniformity of the liquid inlet of the defoaming tower is ensured as much as possible, a pressure gauge and an adjusting valve are arranged on two sides of the symmetrical branched pipe at the nth layer before each inlet of the defoaming tower, and the adjusting valves can be compared according to the reading of the pressure gauge, so that the pressures of all the inlets are completely consistent. The stock solution uniformly enters the defoaming tower from a plurality of liquid inlet holes at the top of the defoaming tower, is uniformly extruded from the upper part of the defoaming tower, and is uniformly laid into a film to be left along the tower wall. And vacuumizing the defoaming tower to smoothly remove bubbles in the stock solution and air dissolved in the stock solution.
The stock solution is spread into a uniform film, and bubbles are removed in a negative pressure environment in the defoaming tower. And the defoamed stock solution flows into a stock solution buffer tank through a pipeline, and is conveyed to a spinning line for production through a conveying pump at the outlet of the stock solution buffer tank.
As shown in fig. 7, the present invention further provides a dope degassing apparatus, which includes a degassing tower 40, a gas-liquid separator 50, a buffer tank 70, and a vacuum system 60.
The gas-liquid separator 50 is connected with the top of the defoaming tower 40, the gas extracted from the top of the defoaming tower contains part of water vapor, and the water vapor is collected in the gas-liquid separator after being condensed and can be discharged through two valves on a liquid discharge pipeline at the bottom of the gas-liquid separator.
The buffer tank 70 is connected with the bottom of the defoaming tower 40, and the buffer tank 70 is used for maintaining stock solution at a certain liquid level, so that a liquid seal is provided for a stock solution discharge pipeline of the defoaming tower, air cannot be sucked backwards when the vacuum degree fluctuates, and the stability of a defoaming process and a subsequent process is enhanced.
The vacuum system 60 is connected with the gas-liquid separator 50, so that the system can keep a certain negative pressure and timely pump away gas removed from the stock solution.
In specific implementation, the gas-liquid separator 50 and the buffer tank 70 are custom-made containers, and the total volume of the gas-liquid separator 50 is 1.4m3 
The total volume of the buffer tank 70 is 5.7m3，
The vacuum system 60 consists of a vacuum pump unit, pipelines and ancillary equipment, wherein the vacuum pump unit is purchased in a whole set and has the model of PSK 35-2/1.0-WL.
The negative pressure in the defoaming tower is formed by a vacuum regulating valve on a vacuum pipeline at the top of the gas-liquid separation tank 50 and a pressure transmitter 33 at the top of the defoaming tower. And (4) performing interlocking regulation control, and maintaining a certain negative pressure range.
A vacuum regulating valve and a defoaming tower top pressure transmitter are common means for controlling vacuum degree, and belong to accessory facilities of a vacuum system. And (3) detecting the vacuum degree in the defoaming tower by a pressure transmitter at the top of the defoaming tower, if the vacuum degree is greater than a set value, controlling the opening of a vacuum regulating valve by an automatic system to enable outside air to enter a vacuum system, reducing the vacuum degree of the system, and closing the vacuum regulating valve after the vacuum degree is normal.
And pumping the gas and the vapor removed from the deaeration tower into a gas-liquid separator through a pipeline, collecting the condensed vapor at the bottom of the gas-liquid separator and finally discharging the condensed vapor, and pumping the non-condensable gas into a vacuum system through a pipeline and discharging the non-condensable gas.
The invention provides a defoaming tower and a spinning stock solution defoaming device, wherein stock solution is input through uniformly distributed liquid inlet holes, the time consumption of a defoaming process is short, and the defoaming effect of micro bubbles is obviously improved by forming the stock solution into a film through a film forming flow channel.
The above-described embodiment is only one embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be easily made based on the application and principle of the present invention disclosed in the present application, and the present invention is not limited to the method described in the above-described embodiment of the present invention, so that the above-described embodiment is only preferred, and not restrictive.
Claims (10)
1. A defoaming tower is characterized by comprising an upper end enclosure, a lower end enclosure and an adjusting gasket positioned between the upper end enclosure and the lower end enclosure; wherein:
the upper end enclosure consists of a tank body with a top and an upper flange arranged at an opening at the bottom of the tank body with the top, and a first groove for placing a first sealing rubber ring is arranged on the lower surface of the upper flange;
the lower end socket consists of a conical cylinder and a lower flange arranged at a middle and large opening end of the conical cylinder, a second groove for placing a second sealing rubber ring and a first film forming flow channel positioned on the inner side of the second groove are formed in the upper surface of the lower flange, and a liquid inlet communicated with the first film forming flow channel is formed in the side wall of the lower flange;
the adjusting gasket is positioned between the first sealing ring and the second sealing ring; and a second film forming flow passage communicated with the first film forming flow passage is formed between the upper flange and the lower flange.
2. The defoaming tower of claim 1, wherein the inner wall of the upper flange has a vertical cylindrical surface and a conical surface, and a step is provided between the vertical cylindrical surface and the conical surface, so that the diameter of the conical surface is smaller than that of the vertical cylindrical surface; the open end of the bottomed cylinder is in contact with and fixed to the step.
3. The de-aeration tower of claim 2, wherein the tapered surface extends downwardly to form an annular protrusion.
4. The defoaming tower of claim 3, wherein the second film-forming flow channel comprises a horizontal slot between the upper flange and the lower flange and an inclined slot between the annular protrusion and the inner wall of the lower flange.
5. The defoaming tower of claim 1, wherein the inner wall of the lower flange has a first conical surface and a second conical surface, and a step is formed between the first conical surface and the second conical surface, and the step enables the diameter of the first conical surface to be smaller than that of the second conical surface; the large opening end of the conical cylinder body is contacted and fixed with the step.
6. The defoaming tower according to claim 1, wherein the defoaming tower comprises a main pipeline and n layers of symmetrical branched pipes, the main pipeline is connected with the center of the symmetrical branched pipe of the first layer, two ends of the symmetrical branched pipe of the first layer are connected with the center of the symmetrical branched pipe of the second layer, and so on, and two ends of the symmetrical branched pipe of the nth layer are connected with two adjacent liquid inlet holes.
7. The de-bubbling tower of claim 5, wherein the number of the liquid inlet holes is 2nAnd (4) respectively.
8. The defoaming tower of claim 5, wherein a pressure gauge and an adjusting valve are mounted on two sides of the symmetrical branched pipe of the nth layer.
9. A dope deaeration device, comprising:
a deaerating tower as recited in any one of claims 1 to 8;
the gas-liquid separator is connected with the top of the defoaming tower;
the vacuum system is connected with the gas-liquid separator;
and the buffer tank is connected with the bottom of the defoaming tower.
10. The dope defoaming apparatus of claim 9, wherein the negative pressure in the defoaming tower is interlockingly regulated and controlled by a vacuum regulating valve at the top of the gas-liquid separator and a pressure transmitter at the top of the defoaming tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065466.9A CN112779608B (en) | 2019-11-04 | 2019-11-04 | Deaeration tower and spinning dope deaeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065466.9A CN112779608B (en) | 2019-11-04 | 2019-11-04 | Deaeration tower and spinning dope deaeration device |
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| Publication Number | Publication Date |
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| CN112779608A true CN112779608A (en) | 2021-05-11 |
| CN112779608B CN112779608B (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911065466.9A Active CN112779608B (en) | 2019-11-04 | 2019-11-04 | Deaeration tower and spinning dope deaeration device |
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| CN101856570A (en) * | 2010-06-03 | 2010-10-13 | 西安康本材料有限公司 | Dynamic demonomerization and defoaming method and device for carbon fiber spinning solution |
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| CN205576359U (en) * | 2016-04-20 | 2016-09-14 | 海宁宏高化纤有限公司 | Spinning pack of high -pressure spinning machine |
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| CN107029637A (en) * | 2017-05-11 | 2017-08-11 | 浙江理工大学 | A kind of high viscosity fluid filming device |
| CN108939620A (en) * | 2018-09-03 | 2018-12-07 | 江苏新美星包装机械股份有限公司 | Feed liquid degassing tank |
| CN109734242A (en) * | 2017-12-15 | 2019-05-10 | 自贡佳禾新能源科技有限公司 | A kind of method and device that biogas slurry vacuum concentration recycles |
| CN209205310U (en) * | 2018-06-26 | 2019-08-06 | 浙江理工大学 | Falling film type devolatilizer and its falling liquid film element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB687455A (en) * | 1950-06-15 | 1953-02-11 | Ver Glanzstoff Fabrjken A G | Process and apparatus for de-aerated viscous liquids |
| EP0353830A2 (en) * | 1988-08-05 | 1990-02-07 | Shell Internationale Researchmaatschappij B.V. | The control of foam build up in a fermenter |
| US20040089611A1 (en) * | 2002-10-28 | 2004-05-13 | Curlee Richard Kevin | Horizontal reaction chamber comprised of nested, concentric tubes for use in water purification |
| CN101856570A (en) * | 2010-06-03 | 2010-10-13 | 西安康本材料有限公司 | Dynamic demonomerization and defoaming method and device for carbon fiber spinning solution |
| CN202509162U (en) * | 2012-04-21 | 2012-10-31 | 深圳市汇清科技有限公司 | Ultrafiltration membrane deaeration device |
| CN205576359U (en) * | 2016-04-20 | 2016-09-14 | 海宁宏高化纤有限公司 | Spinning pack of high -pressure spinning machine |
| CN205699614U (en) * | 2016-04-29 | 2016-11-23 | 西安交通大学 | A kind of middle low-temperature generating system gas-liquid two-phase gravity separator with ammonia as working media |
| CN107029637A (en) * | 2017-05-11 | 2017-08-11 | 浙江理工大学 | A kind of high viscosity fluid filming device |
| CN109734242A (en) * | 2017-12-15 | 2019-05-10 | 自贡佳禾新能源科技有限公司 | A kind of method and device that biogas slurry vacuum concentration recycles |
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| CN108939620A (en) * | 2018-09-03 | 2018-12-07 | 江苏新美星包装机械股份有限公司 | Feed liquid degassing tank |
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