The present invention relates to the field of drying system technologies, and more particularly, to a water drying control system for refined cotton.
The refined cotton is made by cotton opening, pre-dipping, boiling, bleaching, drying and the processes with the cotton linter as the material. The refined cotton is non-toxic and tasteless, and is easy to absorb water. The refined cotton is the main material for manufacturing ether cellulose, nitrated cellulose and cellulose acetate, is widely applied in food, medicine, daily use chemical, plastic, electronics, papermaking, metallurgy, aerospace and other fields, and is honored as “Industrial Aginomoto”.
Since the refined cotton contains a lot of water after bleaching, the refined cotton needs to be dehydrated and dried through pressing to control the moisture in the scope of 6-8%. At present an airflow drying mode is generally used to control the moisture to the refined cotton, but since there is not monitoring equipment, the moisture content is usually difficult to be accurately controlled, which causes the contradiction that too low moisture affects the enterprise revenue and the customer cannot accept the refined cotton with too high moisture.
The object of the invention is to provide a water drying control system for refined cotton that can accurately control the drying effect of each cycle, makes sure that the moisture content of the refined cotton at each stage is always in a controlled scope, and effectively guarantees the drying effect, so as to solve the deficiency above.
The technical solutions used by the invention to solve the technical problem above are as follows.
A water drying control system for refined cotton comprises a pressing machine and a heat exchanger, the back end part of the pressing machine is provided with a discharge opening, and the water drying control system for refined cotton further comprises a control box, a main flap valve, a main drying pipe, a first drying cup, a second drying cup, a first cyclone separator, a first flap valve, a first draught fan, a third drying cup, a fourth drying cup, a second cyclone separator, a second flap valve, a second draught fan, a first infrared ray moisture transducer, a second infrared ray moisture transducer and a third infrared ray moisture transducer, the main flap valve is communicated with the front end of the main drying pipe, the discharge opening of the pressing machine is corresponding to the main flap valve, the heat exchanger is respectively provided with a first air outlet, a second air outlet, a third air outlet, a fourth air outlet and a air-return port, the main drying pipe is respectively provided with a wind inlet and a wind outlet, the first air outlet of the heat exchanger is communicated with the wind inlet of the main drying pipe, the air-return port is communicated with the wind outlet, the second drying cup is overlapped on the first drying cup and is communicated with the first drying cup, the lower part of the first drying cup is provided with a first wind-supplement port, the bottom part of the first drying cup is communicated with the back end pan of the main drying pipe, the second air outlet of the heat exchanger is communicated with the first wind supplement port of the first drying cup through a first wind supplement pipe, the upper side part of the first cyclone separator is communicated with the top part of the second drying cup through a first feed delivery pipe, the first infrared ray moisture transducer is installed in the first feed delivery pipe, the lower part of the first cyclone separator is provided with a second wind supplement port, the third air outlet of the heat exchanger is communicated with the second wind supplement port through the second wind supplement pipe, the first flap valve is communicated with the bottom part of the first cyclone separator, the first draught fan is communicated with the top part of the first cyclone separator, the fourth drying cup is overlapped on the third drying cup and is communicated with the third drying cup, the lower part of the third drying cup is provided with a third wind supplement port, the bottom part of the third drying cup is communicated with the first flap valve through a second feed delivery pipe, the second infrared ray moisture transducer is installed in the second feed delivery pipe, the fourth air outlet of the heat exchanger is communicated with the third wind supplement port of the third drying cup through the third wind supplement pipe, the upper side part of the second cyclone separator is communicated with the top part of the fourth drying cup, the second flap valve is communicated with the bottom part of the second cyclone separator, the third infrared ray moisture transducer is installed in the second flap valve, the second draught fan is communicated with the top part of the second cyclone separator, the first wind supplement pipe, the second wind supplement pipe and the third wind supplement pipe are respectively provided with a first motorized valve, a second motorized valve and a third motorized valve, aid the control box is electrically connected to the pressing machine, the first motorized valve, the second motorized valve, the third motorized valve, the first infrared ray moisture transducer, the second infrared ray moisture transducer and the third infrared ray moisture transducer respectively.
The first wind supplement pipe, the second wind supplement pipe and the third wind supplement pipe at the first wind supplement port, the second wind supplement port and the third wind supplement port are respectively set towards an obliquely upward direction.
Through using the technical solution above, the invention can reach the beneficial effect as follows.
1. The infrared ray moisture transducers are respectively installed in the feed delivery pipe and the flap valve to monitor the moisture content of the refined cotton of each stage in the drying system, when the moisture content of the product at any stage does not reach the standard, hot air can be supplemented in the drying cup and the cyclone separator corresponding to the transducer through a wind pipe to change the drying intensity and control the moisture content of the refined cotton of each stage in a reasonable scope, so as to effectively increase the performance of enterprises.
2. the moisture data monitored by the transducer is transmitted to a control circuit in the control box, the control circuit controls the flow of each motorized valve to change the amount of heat supply of each wind pipe, so as to achieve the object of controlling the diving effect of each stage in the drying system, so that the moisture content of finally dried refined cotton meets the requirement of technical standard
3. the control circuit in the control box can also accurately control the moisture content of the material through controlling the rotate speed of the pressing machine, that is, through controlling the flow of the material in the drying system.
As shown in
Number | Date | Country | Kind |
---|---|---|---|
2017 1 0162600 | Mar 2017 | CN | national |
Number | Name | Date | Kind |
---|---|---|---|
3256614 | Dunbar | Jun 1966 | A |
Number | Date | Country |
---|---|---|
104160232 | Nov 2014 | CN |
104160232 | Feb 2016 | CN |
205035515 | Feb 2016 | CN |
205035515 | Feb 2016 | CN |
Entry |
---|
English translation of office action for application No. 201710162600.1 from The People's Republic of China (Year: 2018). |
SIPO, First Office Action, dated Feb. 1, 2019, Application No./Patent No. 201710162600.1. |
SIPO, Second Office Action, dated Jul. 24, 2019, Application No./Patent No. 201710162600.1. |
Jiangxi Forestry Research Institute, “Fiber Air Drying and Fiber Grading”, Manual of Wood-based Panel Production, Sep. 1977, pp. 431-439, Agriculture Press, China. |
Number | Date | Country | |
---|---|---|---|
20180266765 A1 | Sep 2018 | US |