The airflow of the rear belly of the carding machine has a great influence on the noil, and it is related to the technological parameters of the rear belly. Special equipment for the textile industry on the winder. As the last process of spinning and the first process of weaving, winding is the link between the past and the next.“bridge”Therefore, it occupies an important position in the textile field.
Carding machines are used to process cotton fibers and chemical fibers and belong to textile machinery. According to the spinning process, carding is an important process. The front process of the carding machine is the opening and cleaning machine, and the latter process is the drawing frame (carding process) or the sliver coiler (combing process).
The structure of the double twisting unit of the double twisting machine mainly includes the spindle braking device, the spindle part of the double twisting machine, the yarn winding device, and the special device of the double twisting unit. Air flow can generally be divided into the following two categories: 1. Air flow on the boundary layer of the licker-in When the licker-in rolls drive the fiber to reverse at a high speed, the surrounding air is driven to reverse due to the conflict, thus generating the boundary layer airflow. When the licker-in is reversed at a high degree of height, the short fibers and dust that are thrown out under the influence of centrifugal force, because of their light specific gravity, will move with the air flow on the surface layer, while the debris with a large specific gravity will pass through the surface layer. The layer fell to the rear of the car.
If the air flow of the boundary layer is disturbed by the environment, not only the short fibers in the air flow of the boundary layer will become noil, but also some of the longer available fibers will slough off the teeth of the licker-in roller and become white. When the airflow enters the bottom leakage of the carding machine, the gap of the bottom leakage inlet is larger than that of the dust removal knife, so the air is replenished from the belly of the car. Because the gap of the small leakage bottom is gradually reduced, there is airflow at the bottom of the leakage mesh. Escape, and part of the short lint is also discharged from the mesh. A part of the exhausted air is recovered from the beginning at the inlet of the small leak bottom.
2. Car belly element flow The bottom chord length of the small leak and the fourth point spacing have a significant impact on the car belly noil. The fourth point has a large distance, which is easy to block the bottom mesh. Especially when the mesh is greasy and dirty, it is easier to disturb the airflow.
As a result, some of the available fibers are scattered into the belly of the car, which also becomes white, and in severe cases, it becomes a quilt. Therefore, in addition to the technical point of view, how to reduce the fourth point distance, adjust the parameters related to the adjustment, and other small reforms to stabilize the airflow (such as low-pressure hoods for licker-in, suction equipment, etc.), in terms of operation, According to the time, frequency, use tools and operation square sticks according to the workshop rules, carefully dig out the belly of the car, and clean the dust grids that have been uncovered at the bottom to reduce turbulence, improve the cotton condition, improve the quality of yarn, and save available fibers. And the maintenance staff should be meticulously positioned according to the standard standard device for the size of the leak bottom. It is also extremely important to clean the leak bottom and correct the shape.
When the cotton fiber is carded by the licker-in roller, the impurities and short lint in the fiber are affected by the resistance of the dust removal knife and the effect of the air pressure difference between the inside and outside of the small leakage bottom. And at the bottom of the leaking mesh, it descends to the belly of the rear car with the airflow. Inquiries, the fine impurities and velvet around the Xinjinlong, due to centrifugal force, gravity and air comb, fall from the pores of the large leak bottom, and become the front car noil. The air flow on the surface of the licker-in teeth is the largest, because of the viscous effect of the gas molecules, with the increase of the thickness of the boundary layer, the air flow speed decreases, and the farther away from the surface of the licker-in roll, the lower the speed.
Therefore, the noils also mostly fall with the airflow.
cotton fabric waste recycling machine
Fabric Waste Recycling Machine