Membrane electrode drying box

Abstract

The utility model discloses a membrane electrode drying box, and relates to the technical field of electrochemistry. The drying box comprises a drying box body and a heat dissipation top cover, a heating plate is slidably clamped to the inner side of the drying box body, an extrusion spring is clamped to the bottom of the heating plate, the heat dissipation top cover is rotationally clamped to the upper side of the drying box body, and a plurality of heat dissipation fins are welded in the heat dissipation top cover in parallel. Through the arrangement of the drying box main body and the heat dissipation top cover, the problems that when the membrane electrode drying box is used for drying a membrane electrode, rapidly flowing air possibly causes lines to appear on the surface of the undried membrane electrode, the membrane electrode is in a high-temperature environment, a solvent is difficult to rapidly volatilize, and the drying effect is poor are solved. The problems that a heating device is often not in direct contact with a carrier of a membrane electrode, the membrane electrode is heated by heating air, the heat transfer efficiency is low, and contact type heating possibly causes insufficient contact due to change of surface tension of a moving carrier are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrochemistry, and particularly relates to a membrane electrode drying box. Background Art

[0002] Membrane electrode is an electrode equipped with a membrane combination in its structure. It is the core component of hydrogen fuel cells and the fundamental source of fuel cell power. During the production and processing of membrane electrode, the electroactive material needs to be dispersed in a solvent to form a slurry, and the slurry is evenly coated on the conductive substrate material through a coating process. Then, the solvent is removed through a drying process, and finally a membrane electrode with a certain thickness and uniformity is prepared. After the coating is completed, the membrane electrode is usually passed through a drying oven to increase its drying speed in order to improve the production efficiency of the membrane electrode. However, it still has the following disadvantages in actual use:

[0003] Most drying ovens improve the volatilization efficiency of solvents by heating and driving air flow, thereby improving the drying efficiency of membrane electrodes. However, in actual use, the rapid flow of air may cause lines to appear on the surface of undried membrane electrodes. In addition, when the drying oven is drying, the membrane electrodes are in a high temperature environment, and the solvent is difficult to evaporate quickly, resulting in a decrease in the drying efficiency of the membrane electrodes.

[0004] When the membrane electrode drying box is drying the membrane electrode, the heating device is often not in direct contact with the membrane electrode carrier, and the membrane electrode is heated by heated air, which has a low heat transfer efficiency. The moving membrane electrode is heated by direct contact with the heating structure, which may cause insufficient contact due to the change in the surface tension of the carrier during movement, thereby reducing the heat transfer efficiency. Utility Model Content

[0005] The utility model aims to provide a membrane electrode drying box, which solves the problem that when the membrane electrode drying box dries the membrane electrode, the fast-flowing air may cause lines to appear on the surface of the undried membrane electrode, the membrane electrode is in a high temperature environment, the solvent is difficult to evaporate quickly, the heating device is often not in direct contact with the carrier of the membrane electrode, and the membrane electrode is heated by heated air, the heat transfer efficiency is low, and the contact heating may cause insufficient contact due to the change of the surface tension of the moving carrier.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a membrane electrode drying box, comprising a drying box body and a heat dissipation top cover, wherein a heating plate is slidably clamped on the inner side of the drying box body, and an extrusion spring is clamped on the bottom of the heating plate. When a carrier drives the membrane electrode to pass through the upper side of the heating plate, the membrane electrode is heated by the heating plate, thereby increasing the activity of solvent molecules and the solvent volatilization efficiency. The heating plate, the membrane electrode and its carrier are squeezed by the extrusion spring, so that the heating plate is always attached to the bottom side of the carrier of the membrane electrode, thereby ensuring the efficiency of heat transfer. A heat dissipation top cover is rotatably clamped on the upper side of the drying box body, and a plurality of heat dissipation fins are welded in parallel in the heat dissipation top cover. The heat dissipation area of ​​the heat dissipation top cover can be greatly increased by the heat dissipation fins, thereby improving the heat dissipation efficiency. The flow of air can drive the rapid dissipation of the accumulated heat in the heat dissipation top cover, thereby generating a certain temperature difference between the upper and lower sides of the membrane electrode, thereby improving the volatilization efficiency of the solvent. The flowing air can further increase the volatilization speed of the solvent, thereby improving the drying efficiency of the membrane electrode.

[0008] Furthermore, a support frame is welded and fixed at the bottom of one side of the drying box body, a mounting hole is penetrated through one side of the support frame, and guide rollers are rotatably clamped at both ends of the drying box body, and the guide rollers are located at the bottom of the heating plate;

[0009] The bolts are screwed through the mounting holes to further fix the drying box in a suitable position. The installation operation is simple and convenient. The moving direction of the membrane electrode can be guided by the guide roller to ensure that the membrane electrode can stably enter the inner side of the drying box body.

[0010] Furthermore, a slide groove is provided inside the drying box body, and material passage openings are provided at both ends of the drying box body, the material passage openings are connected to the inside of the slide groove, the heating plate is slidably connected to the inside of the slide groove, and one end of the extrusion spring is connected to the bottom of the slide groove;

[0011] When the membrane electrode and the carrier pass through the inner side of the drying box body, the carrier can be heated by the heating plate attached to the carrier, and the membrane electrode can be further heated, thereby increasing the activity of the solvent molecules in the membrane electrode and improving the solvent volatilization efficiency. The heating plate is squeezed by the squeezing spring, so that the heating plate is always squeezed against the bottom side of the membrane electrode carrier, thereby ensuring the efficiency of heat transfer.

[0012] Furthermore, a blower is clamped and fixed at one end of the heat dissipation top cover, the blower is attached to one end of a plurality of heat dissipation fins, and the plurality of heat dissipation fins are attached to the top of the slide slot;

[0013] The heat dissipation area of ​​the heat dissipation top cover can be increased by the heat dissipation fins, so that the flow of air can drive the heat dissipation top cover to cool down quickly, further causing a certain temperature difference between the upper and lower sides of the membrane electrode, and further improving the volatilization efficiency of the solvent.

[0014] Furthermore, a plurality of guide plates are welded and fixed to the bottom of the heat dissipation top cover, the plurality of guide plates are attached to the top of the slide slot, and the plurality of guide plates are penetrated and welded to the bottom of one side of the plurality of heat dissipation fins;

[0015] The guide plate can guide the airflow driven by the blower to prevent the airflow from directly contacting the membrane electrode surface that is not completely dried. The airflow will reduce the air pressure on the upper side of the guide plate, allowing the hot air and volatile solvent to pass through the gaps between the guide plates and be discharged with the rapid flow of air, thereby improving the drying efficiency.

[0016] The utility model has the following beneficial effects:

[0017] The utility model solves the problem that most drying boxes improve the volatilization efficiency of the solvent and thus improve the drying efficiency of the membrane electrode by providing a drying box main body and a heat dissipation top cover, but in actual use, the rapid flow of air may cause lines to appear on the surface of the undried membrane electrode, and when the drying box is drying, the membrane electrode is in a high temperature environment, and the solvent is difficult to volatilize quickly, resulting in a decrease in the drying efficiency of the membrane electrode. The membrane electrode can be heated from the bottom side of the membrane electrode by a heating plate, so that the membrane electrode is at a higher temperature, further increasing the activity of the solvent molecules in the membrane electrode and improving the solvent volatilization efficiency. The heat dissipation top cover is quickly dissipated by air flow, and the flow of air is driven to further improve the volatilization efficiency of the solvent, and the heat dissipation top cover is kept at a lower temperature. Through the temperature difference between the upper and lower sides of the membrane electrode, the volatilization efficiency of the solvent is further improved, so that the membrane electrode can be dried quickly.

[0018] The utility model solves the problem that, when the membrane electrode is dried in the membrane electrode drying box, the heating device is often not in direct contact with the carrier of the membrane electrode, and the membrane electrode is heated by heated air, resulting in low heat transfer efficiency, while the moving membrane electrode is heated by direct contact with the heating structure, which may cause insufficient contact and reduce the heat transfer efficiency due to the change of the surface tension of the carrier during movement. When the membrane electrode is heated by the heating plate, the heating plate can be squeezed by the squeezing spring, and the membrane electrode and its carrier are further squeezed, so that the heating plate is always squeezed on the bottom side of the membrane electrode carrier, thereby ensuring the heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural effect diagram of the utility model;

[0021] Figure 3 This is a structural diagram of the drying oven subject of the utility model;

[0022] Figure 4It is a cutaway view of the main body of the drying box of the utility model;

[0023] Figure 5 This is a structural diagram of the heat dissipation top cover of the utility model;

[0024] Figure 6 It is a cutaway view of the heat dissipation top cover of the utility model.

[0025] Reference numerals:

[0026] 1. Drying box body; 101. Guide roller; 102. Heating plate; 103. Support frame; 104. Mounting hole; 105. Slide groove; 106. Extrusion spring; 107. Feeding port; 2. Heat dissipation top cover; 201. Blower; 202. Heat dissipation fins; 203. Guide plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] See also Figure 1-6 As shown, the utility model is a membrane electrode drying box, including a drying box body 1 and a heat dissipation top cover 2, a heating plate 102 is slidably clamped on the inner side of the drying box body 1, and a squeezing spring 106 is clamped on the bottom of the heating plate 102. When the carrier drives the membrane electrode to pass through the upper side of the heating plate 102, the membrane electrode is heated by the heating plate 102 to increase the activity of the solvent molecules, and the squeezing spring 106 squeezes the heating plate 102, the membrane electrode and its carrier so that the heating plate 102 is always attached to the bottom side of the membrane electrode carrier, and a heat dissipation top cover 2 is rotatably clamped on the upper side of the drying box body 1, and a plurality of heat dissipation fins 202 are welded in parallel in the heat dissipation top cover 2. The heat dissipation area of ​​the heat dissipation top cover 2 is greatly increased by the heat dissipation fins 202, and the flow of air drives the rapid dissipation of the accumulated heat in the heat dissipation top cover 2, so that the heat dissipation top cover 2 is quickly cooled, and further a certain temperature difference is generated between the upper and lower sides of the membrane electrode, and the flowing air further increases the volatilization rate of the solvent.

[0029] Among them Figure 1-4 As shown, a support frame 103 is welded and fixed to the bottom of one side of the drying box body 1, and a mounting hole 104 is penetrated on one side of the support frame 103. Guide rollers 101 are rotatably clamped at both ends of the drying box body 1. The guide rollers 101 are located at the bottom of the heating plate 102. A chute 105 is opened on the inner side of the drying box body 1. A material through hole 107 is penetrated and opened at both ends of the drying box body 1. The material through hole 107 is connected with the inside of the chute 105. The heating plate 102 is slidably clamped on the inner side of the chute 105, and one end of the extrusion spring 106 is clamped on the bottom of the chute 105.

[0030] When installing the drying box, select a suitable position and fix the drying box in the corresponding position by screwing bolts through the mounting holes 104, fit the membrane electrode carrier to the heating plate 102 and insert it through the material port 107, and then fit it to the upper side of the outer circumference of the two guide rollers 101, control the tension on the carrier until the squeezing spring 106 is squeezed, and when the membrane electrode is dried, the coating device etc. coats the carrier and drives the carrier to move quickly, and when the membrane electrode and its carrier pass through the inner side of the drying box body 1, the membrane electrode and its carrier are heated by the heating plate 102 to increase the activity of the solvent molecules in the membrane electrode, and the squeezing of the heating plate 102 by the squeezing spring 106 further makes the heating plate 102 always pressed and fit to the bottom side of the membrane electrode carrier.

[0031] Among them Figure 1 , 2 As shown in , 5 and 6, a blower 201 is clamped and fixed at one end of the heat dissipation top cover 2, and the blower 201 is attached to one end of a plurality of heat dissipation fins 202, and the plurality of heat dissipation fins 202 are attached to the top of the slide slot 105, and a plurality of guide plates 203 are welded and fixed to the bottom of the heat dissipation top cover 2, and the plurality of guide plates 203 are attached to the top of the slide slot 105, and the plurality of guide plates 203 are penetrated and welded to the bottom of one side of the plurality of heat dissipation fins 202;

[0032] When the membrane electrode passes through the drying box, the air flow is driven by the blower 201, and the heat dissipation area of ​​the heat dissipation cover 2 is increased by multiple heat dissipation fins 202, so that the flowing air drives the heat dissipation cover 2 to cool down quickly, further causing a certain temperature difference between the upper and lower sides of the membrane electrode. The airflow driven by the blower 201 is guided by the guide plate 203 to avoid direct contact between the airflow and the surface of the membrane electrode that is not completely dried, and the airflow will reduce the air pressure on the upper side of the guide plate 203, so that the hot air and volatilized solvent in the drying box body 1 can quickly pass through the gap between the guide plates 203 under the action of air pressure and be discharged with the rapid flow of air.

[0033] The specific working principle of the utility model is as follows: when installing the drying box, select a suitable position and fix the drying box in the corresponding position by screwing through the bolts in the installation hole 104, fit the membrane electrode carrier to the heating plate 102 and insert it into the feed port 107, and then fit it to the upper side of the outer peripheral surface of the two guide rollers 101, control the tension of the carrier until the extrusion spring 106 is squeezed, turn and close the heat dissipation top cover 2, and produce and process the membrane electrode through the coating device, and drive the membrane electrode and its carrier to move quickly. When the membrane electrode and its carrier enter the drying box body 1 through the feed port 107, the membrane electrode and its carrier are heated by the heating plate 102 to increase the activity of the solvent molecules in the membrane electrode. The air flow is driven by the blower 201, and the heat dissipation area of ​​the heat dissipation top cover 2 is increased through multiple heat dissipation fins 202, so that the flowing air drives the heat dissipation top cover 2 to cool down quickly, further causing a certain temperature difference between the upper and lower sides of the membrane electrode, and the airflow driven by the blower 201 is guided by the guide plate 203 to avoid direct contact between the airflow and the surface of the membrane electrode that is not completely dried, and the airflow will reduce the air pressure on the upper side of the guide plate 203, so that the hot air and volatile solvent in the drying box body 1 can quickly pass through the gap between the guide plates 203 under the action of air pressure, and be discharged with the rapid flow of air, and the heating plate 102 is squeezed by the extrusion spring 106, so that the heating plate 102 is always pressed and fitted to the bottom side of the membrane electrode carrier.

[0034] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A membrane electrode drying oven, comprising a drying oven body (1) and a heat dissipation cover (2), characterized in that: A heating plate (102) is slidably engaged with the inner side of the drying box body (1), a pressing spring (106) is engaged with the bottom of the heating plate (102), a heat dissipation top cover (2) is rotatably engaged with the upper side of the drying box body (1), and a plurality of heat dissipation fins (202) are parallel-welded inside the heat dissipation top cover (2).

2. A membrane electrode drying oven according to claim 1, characterized in that: A support frame (103) is welded and fixed to the bottom of one side of the drying box body (1), and a mounting hole (104) is provided through one side of the support frame (103). Guide rollers (101) are rotatably clamped at both ends of the drying box body (1), and the guide rollers (101) are located at the bottom of the heating plate (102).

3. The membrane electrode drying oven according to claim 1, characterized in that: A slide groove (105) is provided on the inner side of the drying box body (1), and material passage openings (107) are provided at both ends of the drying box body (1), the material passage opening (107) and the slide groove (105) are connected through and through, the heating plate (102) is slidably engaged with the inner side of the slide groove (105), and one end of the extrusion spring (106) is engaged with the inner bottom of the slide groove (105).

4. A membrane electrode drying oven according to claim 3, characterized in that: A blower (201) is clamped and fixed to one end of the heat dissipation top cover (2), the blower (201) is attached to one end of a plurality of heat dissipation fins (202), and the plurality of heat dissipation fins (202) are attached to the top of the slide groove (105).

5. The membrane electrode drying oven according to claim 4, characterized in that: A plurality of guide plates (203) are welded and fixed to the bottom of the heat dissipation top cover (2), the plurality of guide plates (203) are attached to the top of the slide groove (105), and the plurality of guide plates (203) are penetrated and welded to the bottom of one side of the plurality of heat dissipation fins (202).

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