Ultrasonic full-degradable biomass agricultural film production line system

Abstract

The invention belongs to the technical field of green manufacturing, and particularly discloses an ultrasonic full-degradable biomass agricultural film production line system which comprises a dehumidification system matched with the production line system, and the dehumidification system is connected with a PLC control system. The production line system comprises a headbox and a drying device. Apulp inlet and a pulp outlet are formed in the headbox, a white water tank is arranged on one side of the pulp outlet, a mesh cage matched with the headbox is arranged on the white water tank, a feltcloth wheel is arranged on the mesh cage, felt cloth matched with the drying device is arranged on the felt cloth wheel, and an agricultural film collecting device is arranged on the side, away from the felt cloth wheel, of the drying device; a pulp inlet pipe is arranged on the pulp inlet, and the end, away from the pulp inlet, of the pulp inlet pipe is connected with an ultrasonic pulp homogenizing device.

Description

technical field [0001] The invention belongs to the technical field of green manufacturing and relates to the technical field of degradable agricultural film, in particular to a production line system for fully degrading biomass agricultural film by ultrasonic waves. Background technique [0002] my country's agricultural film coverage and usage have always ranked first in the world. In the past 30 years, the demand for agricultural film has increased at a rate of about 10% per year. In 2016, China's annual output of agricultural film reached 1.58 million tons. If it cannot be degraded and absorbed, it needs to be collected and sorted before it can be planted again after use, which is not only time-consuming and labor-intensive, but also easily causes land pollution. The Nongquan biodegradable agricultural film is made of biodegradable plastics, mainly made of renewable resources such as plant cellulose, plant protein and starch. It not only has the functions of ordinary agri...

AI Technical Summary

Problems solved by technology

In the process of industrial production, circular mesh cages are generally used for continuous production. The overall quality of the existing circular mesh cages is relatively large. Rotating on the bearings for a long time will seriously affect the service life of the bearings, and the replacement of the bearings requires shutdown. Seriously affect the papermaking process; after the solid matter in the slurry flowing from the headbox to the cage is swept away by the outer peripheral surface of the cage, the leaked white water slides down into the white water tank, and splashes will splash in the white water tank, and the water splashes are easy to splash To the wet paper layer made on the cage, affecting the final quality of the paper

In the process of preparing degradable agricultural film by paper machine, the slurry in the headbox is prone to deposit, resulting in fiber flocculation at the bottom of the headbox; moreover, the angle of the outlet pipe of the headbox cannot be adjusted after installation , when the mesh cage needs to be replaced or updated after being used for a period of time, when the replaced mesh cage is different from the original mesh cage or the size is inconsistent, it is necessary to cut, disassemble, redesign and install the pulp outlet of the headbox. Caused more inconvenience in production

[0004] The agricultural film production line system needs to use a lot of water in the production process of the agricultural film. After the agricultural film is formed, it is necessary to dry the wet paper layer to evaporate the water on the wet paper layer. Generally, an air extraction device is used for drying The evaporated water is extracted and discharged directly. This method not only cannot guarantee the quality of the extracted water vapor, but also directly discharges the extracted water vapor, which will also cause a serious waste of water resources; The film production process is directly exposed to the air. When the room temperature is low, the evaporation of water is small, and the exposure of equipment will not have a great impact on the entire production line system. However, when the room temperature rises, a large amount of water evaporates. These The slurry in the exposed equipment will generate a large amount of water vapor. Due to the large water vapor content, a large number of water droplets will be generated after using the refrigeration equipment, which not only seriously affects the forming speed and quality of the agricultural film, but also consumes a lot of energy; the water vapor will Erosion of equipment and workshops on the entire agricultural film production line, leading to corrosion and aging of equipment and workshops, and easily causing rheumatic diseases in the joints of operators, seriously affecting the health of operators

When the agricultural film needs to be dried after forming, the drying wheel is generally used to dry the agricultural film, but when the drying wheel is used to dry the formed agricultural film, since the agricultural film has a certain thickness and high humidity after forming, Directly using drying wheels to bake the formed agricultural film on one side will easily lead to uneven drying on the inside and outside of the agricultural film, and uneven shrinkage on both sides of the agricultural film, which will easily lead to distortion and deformation of the agricultural film. Occurs, seriously affecting the aesthetics and quality of the finished agricultural film

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