GB2253863A

GB2253863A - Dyeing apparatus

Info

Publication number: GB2253863A
Application number: GB9105644A
Authority: GB
Inventors: Chyi-Long Jang
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-18
Filing date: 1991-03-18
Publication date: 1992-09-23
Also published as: GB9105644D0

Abstract

A dyeing apparatus for piece goods, comprising means defining a path through dyeing liquid for a string of piece goods, said string of piece goods being conducted by said path to circulate through a dyeing course via a nozzle, said path having a plurality of inner flanges made on the inner wall surface thereof to cause dyeing liquid to produce turbulent motion on said string of piece goods, the nozzle having two side jets for passing therethrough a dyeing liquid at high pressure and an intermediate jet in the middle for passing therethrough liquid at low pressure. <IMAGE>

Description

DYEING APPARATUS WITH IMPROVED FABRIC DELIVERY PATH AND DYE LIQUOR SUPPLY NOZZLE The present invention relates to dyeing apparatus and relates more particularly to a dyeing apparatus with improved fabric delivery path and dye liquor supply nozzle.

Since piece goods have different thickness and fabric textures, if all are treated under the same condition, uneven dyeing or fire matting is likely to result. It has been the commonly object of dyeing apparatus designers to design such a dyeing apparatus for piece goods which can achieve the following requirements: 1. Suitabie for dyeing piece goods made from different fibers; 2. Suitable for dyeing piece goods made in different thickness; 3. Suitable for dyeing piece goods made from different weaving methods; 4. High dyeing speed; and 5. Good and even dyeing result.

The present invention has been accomplished to achieve the aforesaid requirements. According to the present invention, a dyeing apparatus for piece goods comprising means defining at at least a path through dyeing liquid for a string of piece goods, said path having a wave-like inner wall through which flow of dyeing liquid is caused to produce turbulent motion which causes said string of piece goods to produce relaxation effect.

Said string of piece goods is conducted through a nozzle in said path, dyeing licuid being applied to the piece goods via said nozzle. Said nozzle has two side jets at two opposite sides through which dyeing liquid is delivered at high pressure and crick speed, and an intermediate jet at the middle through which dyeing liquid is delivered at low pressure and low speed.

The present invention will now be described by way of example only with reference to Figures 1 to 5 of the accompanying drawings, of which: Fig. I is a side elevation, partially cutaway, of the preferred embodiment of the dyeing apparatus of the present invention; Fig. 2 is a sectional view of the fabric delivery pipe thereof taken along longitudinal direction, showing the wave-like inner wall surface of said fabric delivery pipe; Fig. 3 is a side elevation, partially cutaway, of the dying tank thereof; Fig. 4 is a cross section of the dyeing tank; and Fig. 5 is a cross section of the nozzle.

Referring to Figs. 1 and 2, the apparatus shown comprises at least a fabric delivery pipe 11 incorporated with a dyeing tank 9 defining therein at least a dyeing path. The fabric delivery pipe 11 has a plurality of unitary inner flanges 12 on the inner wall thereof forming into a wave-like inner wall surface. When dyeing liquid is delivered through the fabric delivery pipe 11, it is immediately caused by the inner flanges 12 to produce turbulent flow.

Therefore, the string of piece goods which is carried in the fabric delivery pipe 11 through dyeing liquid through is caused to produce relaxation effect. The inner flanges 12 may be directly made on the inner wall of the fabric delivery pipe 11 through punching process or respectively made from steel plate and then welded to the inner wall of the fabric delivery pipe 11. The shape of the inner flanges 12 can be variously embodied.

They can be made either in triangular, square, semicircular or any preferred shape that causes the flow of liquid which is carried therethrough to produce turbulent motion.

Referring to Figs. 3 and 4, dyeing liquid is fed from a feed pipe 6 through a nozzle 7 to carry a string of piece goods 8 to move into a dyeing liquid delivery pipe 901 inside the dyeing tank 9 from said dyeing liquid delivery pipe 901 said string of piece goods 8 is delivered through a dye vat 902 and then through a feed roller 903 into said nozzle 7 to form continuous loop which is circulated through the apparatus until the dyeing operation has been completed.

Referring to Fig. 5, the nozzle 7 has two side jets 701 at two opposite sides through which dyeing liquid is ejected at higher pressure for carrying the string of piece goods having longer fiber length, and an intermediate jet 702 at the middle through which dyeing liquid is ejected at a relatively lower pressure for carrying the string of piece goods having shorter fiber length. Matching with the gradually expanding dyeing liquid delivery pipe 901 and dye vat 902, the string of piece goods is prohibited from twisting and forced by dyeing liquid from the nozzle 7 to extend out for receiving dyeing treatment. Therefore, much dyeing area of the string of piece goods is obtained. When dyeing liquid is fed through the side jets 701, higher pressure is produced to deliver flow of dyeing liquid at higher speed andr dyeing speed is relatively increased.

For treating piece goods having longer fiber length, the intermediate jet 702 is recommended. Through the intermediate jet 702, higher flow rate of dyeing liquid is produced at relatively lower pressure and, the piece goods are prevented from tangling together or getting tied up into knots.

Claims

CLAINE:

1. A dyeing apparatus for piece goods comprising means defining therein at least a path through dyeing liquid for a string of piece goods, said string of piece goods being conducted by said pat to circulate through a dyeing course via a nozzle, wneren said path has a plurality of inner flanges made on the inner wall surace thereof to cause dyeing liquid to proctuce turbulent motion on said string of piece goods; ; said nozzle has to side jets at to opposite sides for passing therethrcugh of dyeing liquid at high pressure anc an intermediate Ct at the middle for ain therethrough of dyeing liquid at ow pressure.

2. A dying apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.