US2020633A - Device for equalizing fluctuations produced in masses delivered by spinning pumps - Google Patents
Device for equalizing fluctuations produced in masses delivered by spinning pumps Download PDFInfo
- Publication number
- US2020633A US2020633A US63865532A US2020633A US 2020633 A US2020633 A US 2020633A US 63865532 A US63865532 A US 63865532A US 2020633 A US2020633 A US 2020633A
- Authority
- US
- United States
- Prior art keywords
- spinning
- equalizing
- pump
- tube
- delivered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- D01D1/06—Feeding liquid to the spinning head
- D01D1/09—Control of pressure, temperature or feeding rate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/9029—With coupling
- Y10T137/9138—Flexible
Definitions
- the pumps used for supplying the spinning solution in the manufacture of artificial silk often suffer from the drawback that the flow of the spinning solution is not uniform but shows one or several maxima and minima in each revolution of the pump. This is particularly the case with piston pumps, but pumps of other kinds are also not free from this drawback.
- FIG. 1 shows a section through an arrangement according to this invention
- Fig. 2 represents a diagram showing the fluctuations in the spinning solution produced by a three-piston pump
- Fig. 3 shows a diagram under the same conditions but with a device according to this invention.
- the object of this invention is to provide means for equalizing variations in the rate of flow of spinning solutions delivered by the pump 5 while avoiding any disturbances.
- the duct which conveys the spinning solution from the pump to the spinning nozzle comprises a portion consisting of a thickwalled rubber tube of high elasticity.
- the tube is made of such material and of such dimensions that it is under considerable tension owing to the pressure prevailing within the duct, without, however, being constantly inflated. It should have a bore which is less than the thickness of its walls. It has been found that such a tube responds even to slight variations in the rate of flow of the solution passing through it and becomes inflated or deflated correspondingly, thus equalizing the fluctuations in the pressure and the quantity of solution delivered per unit time.
- the dimensions of the tube are selected according to the pressures which occur and the viscosities of the spinning solutions.
- the spinning solution enters the spinning pump by the feed pipe and the pump fittings.
- the spinning pump for instance, a three-piston pump conveyes the spinning liquid to the filter candle 20 and the spinning nozzles.
- the spinning pump and filter fittings within which the filter candle is mounted are connected by means of jet pipes to a tube of rubber which is surrounded by a protecting spiral.
- the inner diameter of the protecting spiral is somewhat wider than the outer diameter of the rubber tube.
- the rubber tube is fastened on the jet pipes by means of clamps.
- Fig. 2 shows the fluctuations in the rate of delivery of a spinning solution by a normal three-piston pump in the course of three revolutions
- Fig. 3 shows the fluctuations produced under the same conditions when there is used a tube according to this invention. It will be seen that apart from very slight variations the fluctuations have almost disappeared.
- a rubber tube of length 20 cm. of bore 3 mm. and external diameter 21 mm. is inserted so as to form part of the duct connecting the pump and the spinning nozzle and surrounded by a 5 spiral of steel wire having an inner diameter of 22 mm. and a pitch of 5 mm. the thickness of the wire being 2 mm.
- a device for equalizing variations in the 50 rate of flow of a spinning solution delivered by the spinning pump to the spinning nozzle which comprises a thick-walled rubber tube forming a part of the duct conveying the solution from the pump to the nozzle, said rubber-tube having a wall thicker than its bore and its exterior subject to atmospheric pressure.
- a device for equalizing variations in the rate of flow of a spinning solution delivered by 10 the spinning pump to the spinning nozzle which comprises a thick-walled rubber tube forming a part of the duct conveying the solution from the pump to the nozzle, said rubber-tube having a wall thicker than its bore and its exterior subject to atmospheric pressure, and a. wire spiral surrounding said rubber-tube and having an inner diameter substantially larger than the thickness of the rubber tube.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Reciprocating Pumps (AREA)
Description
Nova 12, 1935. H DANNENBERG 2,020,633
DEvIcE FOR EQUALIZING FLUCTUATIONS PRODUCED IN MASSES DELIVERED BY SPINNING PUMPS Filed Oct. 19, 1952 fig. 2
In vemor:
By Aflorneys Patented Nov. 12, 1935 UNITED STATES PATENT OFFICE DEVICE FOR EQUALIZING FLUCTUATIONS PRODUCED IN MASSES DELIVERED BY SPINNING PUBIPS Application October 19, 1932, Serial No. 638,655 In Germany October 23, 1931 2 Claims.
The pumps used for supplying the spinning solution in the manufacture of artificial silk often suffer from the drawback that the flow of the spinning solution is not uniform but shows one or several maxima and minima in each revolution of the pump. This is particularly the case with piston pumps, but pumps of other kinds are also not free from this drawback.
Attempts to equalize the fluctuations in the delivery of the solution by arranging an air chamber in the duct between the spinning pump and the spinning nozzle have involved the drawback that the air contained in the chamber is gradually absorbed by the spinning solution and the equalizing effect is in consequence decreased. It has therefore been suggested to use as an equalizing means an elastic or resilient membrane or hollow body. When there is used a device of this kind, however, it is very difficult to avoid dead spaces in which the spinning solution sets and hardens.
Reference is made to the accompanying drawing in which Fig. 1 shows a section through an arrangement according to this invention,
Fig. 2 represents a diagram showing the fluctuations in the spinning solution produced by a three-piston pump, and
Fig. 3 shows a diagram under the same conditions but with a device according to this invention.
The object of this invention is to provide means for equalizing variations in the rate of flow of spinning solutions delivered by the pump 5 while avoiding any disturbances. According to the invention the duct which conveys the spinning solution from the pump to the spinning nozzle comprises a portion consisting of a thickwalled rubber tube of high elasticity. The tube is made of such material and of such dimensions that it is under considerable tension owing to the pressure prevailing within the duct, without, however, being constantly inflated. It should have a bore which is less than the thickness of its walls. It has been found that such a tube responds even to slight variations in the rate of flow of the solution passing through it and becomes inflated or deflated correspondingly, thus equalizing the fluctuations in the pressure and the quantity of solution delivered per unit time.
The dimensions of the tube are selected according to the pressures which occur and the viscosities of the spinning solutions.
For protecting the tube from overcharge due, for instance, to obstruction of the nozzles, and 5 from external influences it is advantageous to enclose it within another tube of a suitable. material, for instance, iron or glass, which has a somewhat larger diameter, and is not air-tight, or within a loosely fitting spiral or any other 1 similar device. An excessive pressure merely presses the tube against the protective device and its compensating action is suspended while this pressure prevails.
The invention will be more intelligible by ref- 15 erence to the accompanying drawing. The spinning solution enters the spinning pump by the feed pipe and the pump fittings. The spinning pump, for instance, a three-piston pump conveyes the spinning liquid to the filter candle 20 and the spinning nozzles. The spinning pump and filter fittings within which the filter candle is mounted are connected by means of jet pipes to a tube of rubber which is surrounded by a protecting spiral. The inner diameter of the protecting spiral is somewhat wider than the outer diameter of the rubber tube. The rubber tube is fastened on the jet pipes by means of clamps.
The improvements attained by the device described are illustrated in the accompanying drawing in which Fig. 2 shows the fluctuations in the rate of delivery of a spinning solution by a normal three-piston pump in the course of three revolutions, and Fig. 3 shows the fluctuations produced under the same conditions when there is used a tube according to this invention. It will be seen that apart from very slight variations the fluctuations have almost disappeared.
The following example illustrates the invention:
A rubber tube of length 20 cm. of bore 3 mm. and external diameter 21 mm. is inserted so as to form part of the duct connecting the pump and the spinning nozzle and surrounded by a 5 spiral of steel wire having an inner diameter of 22 mm. and a pitch of 5 mm. the thickness of the wire being 2 mm.
What I claim is:
1. A device for equalizing variations in the 50 rate of flow of a spinning solution delivered by the spinning pump to the spinning nozzle which comprises a thick-walled rubber tube forming a part of the duct conveying the solution from the pump to the nozzle, said rubber-tube having a wall thicker than its bore and its exterior subject to atmospheric pressure.
2. A device for equalizing variations in the rate of flow of a spinning solution delivered by 10 the spinning pump to the spinning nozzle which comprises a thick-walled rubber tube forming a part of the duct conveying the solution from the pump to the nozzle, said rubber-tube having a wall thicker than its bore and its exterior subject to atmospheric pressure, and a. wire spiral surrounding said rubber-tube and having an inner diameter substantially larger than the thickness of the rubber tube.
HANS DANNENBERG.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE395216X | 1931-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2020633A true US2020633A (en) | 1935-11-12 |
Family
ID=6396809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US63865532 Expired - Lifetime US2020633A (en) | 1931-10-23 | 1932-10-19 | Device for equalizing fluctuations produced in masses delivered by spinning pumps |
Country Status (3)
Country | Link |
---|---|
US (1) | US2020633A (en) |
FR (1) | FR743849A (en) |
GB (1) | GB395216A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2515929A (en) * | 1947-07-02 | 1950-07-18 | Homestead Valve Mfg Co | Pressure atomizing liquid fuel burning system |
US2871884A (en) * | 1955-09-12 | 1959-02-03 | American Viscose Corp | Pulse dampening feed hose |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8710738U1 (en) * | 1986-06-07 | 1987-12-10 | Mitsuba Electric Mfg. Co., Ltd., Kiryu, Gumma, Jp |
-
0
- FR FR743849D patent/FR743849A/fr not_active Expired
-
1932
- 1932-10-19 US US63865532 patent/US2020633A/en not_active Expired - Lifetime
- 1932-10-24 GB GB2969232A patent/GB395216A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2515929A (en) * | 1947-07-02 | 1950-07-18 | Homestead Valve Mfg Co | Pressure atomizing liquid fuel burning system |
US2871884A (en) * | 1955-09-12 | 1959-02-03 | American Viscose Corp | Pulse dampening feed hose |
Also Published As
Publication number | Publication date |
---|---|
GB395216A (en) | 1933-07-13 |
FR743849A (en) | 1933-04-07 |
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