CN-224230593-U - Nanocellulose drying device of fuel cell

CN224230593UCN 224230593 UCN224230593 UCN 224230593UCN-224230593-U

Abstract

The nano cellulose drying device of the fuel cell belongs to the technical field of drying equipment and comprises an electric roller type conveyor, an electric heating mechanism, a heating shell, an electric push rod, a temperature switch and a temperature control circuit, wherein the electric heating mechanism comprises a fan, a shell and an electric heating pipe, the fan and the shell are arranged at the rear end of a rack of the electric roller type conveyor, the electric heating mechanism, the heating shell, the electric push rod and the temperature switch are arranged on the electric roller type conveyor, and the temperature control circuit is arranged in an electric cabinet. This novel temperature control circuit, temperature switch can detect the air heat temperature of electric heating mechanism output in coordination, also can automated inspection nanocellulose receives the temperature size promptly, when the high or low temperature of temperature, can be automatically through electric putter height-adjusting or adjust the venthole high position of low heating shell, prevented that the high or low temperature from bringing adverse effect to the stoving work, guaranteed the quality of finished product. In conclusion, the novel structure has good prospect.

Inventors

ZHU ZHIWEI
LV YONG
SONG CI
ZHOU GANG

Assignees

义乌工商职业技术学院

Dates

Publication Date: 20260512
Application Date: 20250409

Claims (5)

1. The nanocellulose drying device of the fuel cell comprises an electric roller conveyor, an electric heating mechanism, a heating shell, an electric push rod and a temperature switch, and is characterized by further comprising a temperature control circuit, wherein the electric heating mechanism comprises a fan, a shell and an electric heating pipe, the electric heating pipe is arranged in the shell, an air outlet pipe and an air inlet pipe are respectively arranged at two side ends of the shell, an exhaust pipe and an air inlet pipe of the fan are connected, the fan and the shell are arranged at the rear end of a frame of the electric roller conveyor, a connecting pipe is arranged at the upper end of the heating shell, the upper part of a movable rod of the electric push rod is arranged with the lower part of the heating shell, a cylinder of the electric push rod is arranged at the upper end of the frame, the temperature control circuit is arranged in an electric cabinet, the temperature switch is arranged at the inner side of the rear end of the frame, and the power output end of the temperature control circuit is electrically connected with the power input end of the electric push rod, and two ends of the temperature switch are respectively electrically connected with two signal input ends of the temperature control circuit.
2. The nanocellulose drying device of a fuel cell of claim 1, wherein a plurality of air outlet holes are distributed on a lower end surface of the heating shell, and a distance is between an upper end of a roller of the electric roller conveyor and a lower end of the heating shell.
3. The nanocellulose drying device of claim 1, wherein a temperature sensing surface of the temperature switch is positioned at a lower end of the air outlet hole of the heating case.
4. The nanocellulose drying device of a fuel cell of claim 1, wherein a connection tube of the heating case is connected to an air outlet tube of the outer case.
5. The nanocellulose drying device of fuel cell of claim 1, wherein the temperature control circuits have two identical sets, each set of temperature control circuit comprises a resistor, a triode and a relay which are electrically connected, one end of the first resistor is connected with one end of the second resistor, one end of the third resistor is connected with one end of the third resistor, the other end of the third resistor is connected with the base electrode of the triode, the emitter of the triode is connected with the other end of the second resistor, the negative electrode control power supply input end of the relay, the collector of the triode is connected with the negative electrode power supply input end of the relay, and the positive electrode power supply input end of the relay is connected with the positive electrode control power supply input end of the relay.

Description

Nanocellulose drying device of fuel cell Technical Field The utility model relates to the technical field of drying equipment, in particular to a nanocellulose drying device of a fuel cell. Background Nanocellulose is commonly used as a Gas Diffusion Layer (GDL) reinforcing material or Proton Exchange Membrane (PEM) modifying additive for fuel cells due to its high specific surface area, mechanical strength and modifiable properties, which improves gas/proton transport efficiency and enhances electrode mechanical stability by optimizing pore structure in application. The nanocellulose needs to be dried before application, and the drying process realizes the high-efficiency mass transfer, durable operation and low-cost manufacturing effect in the fuel cell by regulating and controlling the physical structure (porosity and specific surface area) and chemical characteristics (functional groups and stability) of the nanocellulose. The drying mode of the nanocellulose generally comprises a plurality of modes such as vacuum drying, freeze drying, hot air drying and the like, wherein the hot air drying has low cost and good drying effect, and is applied more. In the existing production, the nanocellulose is continuously conveyed to the lower end of a middle drying mechanism on a frame of an electric running water conveying line (generally conveyed by an electric roller conveyor), and then heat generated by the drying mechanism acts on the nanocellulose to carry out a drying process. Although the existing drying mechanism meets the drying work requirement to a certain extent, the existing drying mechanism is limited by the structure of the existing drying mechanism, and the technical problems to be improved are also needed. Specifically, since the hot air outlet of the drying mechanism is at a fixed height, adverse effects on the drying effect (such as temperature rise or reduction of the electric heating plate caused by too high or too low voltage fluctuation, and insufficient drying degree of the nanocellulose caused by too high temperature, carbonization or reduction of hydroxyl activity of the nanocellulose, damage of the hierarchical pore structure, reduction of specific surface area (< 200m 2/g) and reduction of mechanical strength (elastic modulus to below 80 GPa) can be caused when the heat quantity is too high or too low due to voltage fluctuation or other factors. Disclosure of utility model In order to overcome the defects of the prior drying equipment for nanocellulose application, due to the limited structure and the common effect of related structures, the utility model provides the nanocellulose drying device of the fuel cell, which can automatically detect the temperature to which nanocellulose is subjected, automatically adjust the height position of a high or low heat outlet when the temperature is too high or too low, and prevent adverse effects on nanocellulose drying work caused by the too high or too low temperature as much as possible, thereby ensuring the quality of finished products. The technical scheme adopted for solving the technical problems is as follows: The nanocellulose drying device of the fuel cell comprises an electric roller conveyor, an electric heating mechanism, a heating shell, an electric push rod, a temperature switch and a temperature control circuit, wherein the electric heating mechanism comprises a fan, a shell and an electric heating pipe, the electric heating pipe is arranged in the shell, an air outlet pipe and an air inlet pipe are respectively arranged at two side ends of the shell, an air exhaust pipe and an air inlet pipe of the fan are connected, the fan and the shell are arranged at the rear end of a frame of the electric roller conveyor, a connecting pipe is arranged at the upper end of the heating shell, the upper part of a movable rod of the electric push rod is arranged together with the lower part of the heating shell, a cylinder of the electric push rod is arranged at the upper end of the frame, the temperature control circuit is arranged in an electric cabinet, the temperature switch is arranged at the inner side of the rear end of the frame, and a power output end of the temperature control circuit is electrically connected with a power input end of the electric push rod, and two ends of the temperature switch are respectively electrically connected with two signal input ends of the temperature control circuit. Further, a plurality of air outlet holes are distributed on the surface of the lower end of the heating shell, and the distance between the upper end of the roller of the electric roller conveyor and the lower end of the heating shell is kept. Further, the temperature sensing surface of the temperature switch is positioned at the lower end of the air outlet hole of the heating shell. Further, the connecting pipe of the heating shell is connected with the air outlet pipe of the shell. Further, the temperature control circuits are provided with t