The spinning machine is equipped with a "range hood"

"It's said that the spinning machine has used a range hood, which is a new thing." Recently, with curiosity, the author walked into the front spinning workshop of Qilu Petrochemical Acrylic Fiber Factory, and saw a row of yellow small triangular air outlets arranged neatly above the spinning machine, which is particularly striking. This is probably what they call the "range hood".
"Look, there is no smoke at all." Liu Wenhua, an employee of the workshop, was cleaning the corridor and replacing the spinneret. He was busy and nervous, and he was happy to introduce to the author, "This' range hood 'is really useful!" He pointed to the small window above the corridor.
Really, the smoke from the corridor ran obediently along the vent of the "range hood" to the main exhaust pipe.
After a busy trip, he turned off the plug plate of the exhaust outlet, and the "range hood" stopped working.
This unique golden idea was proposed and designed by Tian Yeguang, the workshop equipment worker.
When cleaning the corridor before, with the roar of the electric wire brush, smoke and heat waves gushed from the open mirror window. The operation at a short distance of 20 minutes made the employees intolerable to the burning of smoke and dust, which also caused environmental pollution.
How to change the status quo has become a problem lingering in Tian Yeguang's mind. He was inspired by the exhaust design of the range hood at home. Why not set such an exhaust outlet above the corridor mirror window? Just do what you say. After two months of effort from the scheme demonstration to the design and construction, all the 12 spinning machine exhaust ducts have been installed. On the zigzag exhaust duct above each side of the spinning machine, open 14 triangular exhaust outlets with a length of about 30 cm and a width of about 20 cm, corresponding to the upper and lower tunnel openings. Turn on the "stove" to exhaust air, and turn off the "fire" to stop exhaust. Each "range hood" can be operated independently. The existing idle equipment P56 fan is used to connect the smoke from each local exhaust duct to the main return air duct for centralized treatment.
During the construction of the project, the old were fully utilized. The investment of less than 25000 yuan was only for long-term environmental benefits. The operating environment of the employees was significantly improved. No wonder the employees were full of praise. "This idea is really good!"