Reel for fabric treating machines, said reel comprising: a substantially cylindrical main body (110) having a side surface (111), a first axial end (112) and a second axial end (113); first and second flanges (114, 115), respectively mounted to the first and second axial ends (112, 113) of said main body (110); at least one drag element (120) mounted, in the operating position, externally to said side surface (111), at least one constraining device (130), associated with said drag element (120) to hold said drag element (120) in said operating position. The constraining device (130) can be switched between a first condition, in which it holds said drag element (120) in said operating position, and a second operating condition, in which it allows said respective drag element (120) to be removed.

A blower for an airflow dyeing machine is provided. Each four nozzles of the airflow dyeing machine shares a blower, the blower being disposed at a central position of the four nozzles; wherein the blower comprises: a motor, a blowing machine, a primary air duct, a secondary air duct, an air inlet and an air outlet, the motor driving the blowing machine to rotate, the blowing machine comprising a blowing machine housing and impellers, the impellers being disposed inside the blowing machine housing, two air outlets of the blowing machine being oppositely arranged and are disposed on two sides of the blowing machine housing which respectively supply air to the two nozzles at the two sides, the air inlet of the blowing machine being on a side opposing the motor, the two air outlets of the blowing machine being respectively coupled to one ends of the two primary air ducts.

A blower for an airflow dyeing machine is provided. Each four nozzles of the airflow dyeing machine shares a blower, the blower being disposed at a central position of the four nozzles; wherein the blower comprises: a motor, a blowing machine, a primary air duct, a secondary air duct, an air inlet and an air outlet, the motor driving the blowing machine to rotate, the blowing machine comprising a blowing machine housing and impellers, the impellers being disposed inside the blowing machine housing, two air outlets of the blowing machine being oppositely arranged and are disposed on two sides of the blowing machine housing which respectively supply air to the two nozzles at the two sides, the air inlet of the blowing machine being on a side opposing the motor, the two air outlets of the blowing machine being respectively coupled to one ends of the two primary air ducts.

An ultra-low liquor ratio fabric dyeing machine includes an assisting heat exchanger and a direct temperature rise/lowering device. The assisting heat exchanger or multiple ones of the assisting heat exchanger are additionally included in the dyeing machine. The assisting heat exchanger includes an external pipe that is mounted to a pump pipe of a pump at an inlet port, an outlet port, or both inlet and outlet ports thereof and is mounted with inlet and outlet openings for steam and cooling water in order to serve as an external casing that houses the pump pipe, while the pump pipe serves as a heat exchange pipe of the heat exchanger. The direct temperature rise/lowering device is mounted to a dyeing bath of the dyeing machine to directly introduce steam or cold water therein for quickly increasing or decreasing the temperature of the dyeing bath.

A conveyor-driven fabric dyeing machine includes a recovery container and a dye chemical saving structure. One or multiple containers are provided for recovering and storing hot water for use in a next dyeing operation in order to achieve an effect of saving energy and shortening dyeing time. If desired, liquids for dyeing may be directly collected and recovered, such as water with low contamination or alkali liquid for specific treatment, for use in a next dyeing operation in order to achieve an effect of saving water and reducing the amount of chemicals consumed, and also to reduce the amount of dye and chemicals that is consumed due to oxidation and reduction caused by air. The recovery container may be provided therein with a heat exchanger for recovery of heat. A gas filling opening is formed in the machine body for introducing a gas to expel out air.

A conveyor-driven fabric dyeing machine includes an infiltration and rinse device. Fabric is driven by a conveyor inside a machine body of the dyeing machine and has an extremely low liquid content rate due to separation of fabric, particularly hydrophobic fabric, and liquid. The fabric might get rubbed and damaged and affected in respect of dyeing homogeneity and reduction and cleaning. Quality of the fabric may also be affected by contaminants present inside the machine body. The infiltration and rinse device includes one or multiple spraying devices mounted inside the machine body at a suitable site to receive and jet and spray a pressurized dye liquid or clear water supplied from a pump onto the fabric or the interior space of the machine body to increase a moisten degree of the fabric and also to rinse the fabric and cleanse the interior of the machine body.

A conveyor-driven horizontal fabric dyeing machine includes a machine body that is set horizontal and has a bottom to which a liquid storage tank is mounted at a predetermined location and is lower, in position, than the bottom of the machine body. The liquid storage tank has a volumetric capacity that is large enough to accommodate all or most of the amount of dye liquid falling down and returning from a rear end of a dyeing tube so as to greatly reduce the amount of the dye liquid used. Further, alternatively or additionally, a heat exchanger or a filter may be separately mounted in the liquid storage tank or both the heat exchanger and the filter are mounted in the liquid storage tank to carry out temperature raising/lowering and filtration of the dye liquid. As such, the structure of the dyeing machine is simplified.

A conveyor-driven dual-nozzle fabric dyeing machine includes a machine body in which a conveyor device for conveying fabric and a fabric guide roller are arranged; first and second dyeing tubes through which the fabric selectively passes for being dyed; a first nozzle located below the fabric guide roller and connected to the first dyeing tube; and a second nozzle set horizontally or in an inclined condition and connected to the second dyeing tube. To operate, the fabric is guided around the fabric guide roller and selectively fed through the first nozzle into the first dyeing tube for being dyed or alternatively fed through the second nozzle into the second dyeing tube and also a rear portion of the first dyeing tube to be dyed therein. Fabrics of different kinds can be fed through different nozzles and dyeing tubes to achieve a better effect of dyeing.

A machine for treating a fabric (T) with air, comprises a tunnel (10) for pneumatically transporting the fabric and means for injecting the air into the tunnel above and/or below the fabric and comprising at least one diverting valve (16;18) located substantially half way along the tunnel and having two channels (16a,16b;18a,18b) which are oriented to direct the air flow entering the tunnel in one direction or the other. The valve comprises an adjustable baffle (17;19) adapted to shut off access to the channels (16a,16b;18a,18b) either wholly or partly. In the treatment method of the invention, the air flow (F;F) entering the tunnel is divided into two unequal components (F.sub.1, F.sub.2; F.sub.1, F.sub.2) directed towards opposite ends of the tunnel.

A machine for treating a fabric (T) with air, comprises a tunnel (10) for pneumatically transporting the fabric and means for injecting the air into the tunnel above and/or below the fabric and comprising at least one diverting valve (16;18) located substantially half way along the tunnel and having two channels (16a,16b;18a,18b) which are oriented to direct the air flow entering the tunnel in one direction or the other. The valve comprises an adjustable baffle (17;19) adapted to shut off access to the channels (16a,16b;18a,18b) either wholly or partly. In the treatment method of the invention, the air flow (F;F) entering the tunnel is divided into two unequal components (F.sub.1, F.sub.2; F.sub.1, F.sub.2) directed towards opposite ends of the tunnel.