Opening and Cleaning

The main functions of the opening and cleaning machines are the further separation of the fiber flocks and the removal of contamination particles and dust from the cotton. High fiber throughput with as little fiber damage as possible is desired. 

With the restricted beat the flocks are squeezed between two feed rollers or between one feed plate and one feed roller during the operation of the beaters. Depending on the degree of opening, the beaters are nose beaters, pins, or saw teeth (Fig. 3.4). Because of the squeezed position of the fibers, the effect of opening with the restricted beat is more intense but also more aggressive compared to the free beat. This may lead to fiber damage if the flocks have not been sufficiently pre-opened. 

Contaminants are removed by centrifugal forces with grids and knifes. The knifes can be a sharp edge positioned very cioseiy to the toothed roller surface. While fibers stay in the air stream rotating with the roller owing to their small mass and 

The degree of cleaning may refer to single machines as well as to groups of ma-chines-for example, to all preparatory machines. 

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Operator exposure to toxic vapors during opening and cleaning. 

OPEN UP BATTERY CASE CAREFULLY WITH A CAN OPENER AND CLEAN THE ZINC CASING. 

Distill off an ounce of acrolein and take away the lamp. An ounce is all this size batch is good for. Let the flask cool for an hour before opening and cleaning. Pour the residue down the sink and put your face over the drain to get a sample of the vapor. Jesus ... 

Met nozzle for feed water of a process unit has got choked and it is not possible to open and clean it without stopping the unit. In such a simation, supply feed water through the vent line for preventing the water level going down to a dangerous level. 

Opening and cleaning of internals of process units such as absorption towers, heat exchangers, reactors, and condensers—if necessary now (before revival),... 

Back-flushing is an effective method to open and clean plugged tubes. Figure 16-1 shows a properly installed back-flush connection. Note that the back-flush nozzle is the same size as the water-inlet nozzle (see Chapter 12). 

NaK was then forced from the lower pot into the quench tank up to approximately 1 in. from the top. The NaK in the quench tank next was heated to temperature. The stopper rod reciprocating automatic drive was finally switched on (unless operated manually), and the shotting process proceeded automatically until the stopper rod piston had forced all of the melt out of the nozzle. After the NaK had cooled to room temperature, it was forced back into the lower hold pot through a small screen at the base of the quench tank. The system was then opened and cleaned of NaK with ethyl alcohol and water rinses. The balls were taken from the bottom of the quench tank through the hex nut sealing device. 

If a confined space becomes hazardous after the tank or vessel has been opened and cleaning work is under way, workers should immediately leave the confined space. 

Part N glazing - safety in relation to impact, opening and cleaning... 

Increase of the card production to more than 100 kg/h, including the decrease of fiber damage and the increase in opening and cleaning intensity. 

OE-rotor spinning 114 Opening and cleaning machines 99 Open-reed weaving 163... 

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