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 PDF

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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
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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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English (en)
Inventor
Dannenberg Hans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
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IG Farbenindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of US2020633A publication Critical patent/US2020633A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Reciprocating Pumps (AREA)
US63865532 1931-10-23 1932-10-19 Device for equalizing fluctuations produced in masses delivered by spinning pumps Expired - Lifetime US2020633A (en)

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 (enrdf_load_stackoverflow)
FR (1) FR743849A (enrdf_load_stackoverflow)
GB (1) GB395216A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191820B (en) * 1986-06-07 1990-05-02 Mitsuba Electric Mfg Co Pulsation preventive member for pump

Cited By (2)

* Cited by examiner, † Cited by third party
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 (enrdf_load_stackoverflow) 1933-04-07

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