CN115402858A - Continuous production line for impregnating and drying carbon felt - Google Patents

Abstract

The invention discloses a carbon felt dipping and drying continuous production line which comprises a double-station unwinding mechanism, a cutting and splicing mechanism, a material changing buffer mechanism, a dipping and gluing mechanism, a drying mechanism and a film covering and winding mechanism which are sequentially connected, wherein the unwinding mechanism comprises two unwinding and splicing rollers, the two unwinding and splicing rollers are used for continuously conveying a plurality of carbon felt raw material rolls to the cutting and splicing mechanism, the cutting and splicing mechanism is used for connecting two carbon felt raw material rolls which continuously pass through, the material changing buffer mechanism comprises two limiting rollers which are arranged at intervals and a buffer roller which is positioned between the two limiting rollers, and the buffer roller can move relative to the two limiting rollers so as to bend the carbon felt raw material positioned between the two limiting rollers. The continuous production line for impregnating and drying the carbon felt disclosed by the invention has the advantage of high impregnating and drying efficiency of the carbon felt.

Description

Continuous production line for impregnating and drying carbon felt

Technical Field

The invention relates to the technical field of fuel cells, in particular to a continuous production line for dipping and drying carbon felts.

Background

The current preparation of fuel cell carbon paper mainly utilizes phenolic resin and ethanol solution to mix and fully impregnate carbon felt raw materials, and the carbon felt after impregnating is dried through hot air, and phenolic resin plays the effect of adhesive, and the carbon felt after impregnating, drying, hot briquetting can obtain good mechanical properties and electric conductivity, but the carbon felt has the defect of low impregnation drying efficiency among the related art.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a continuous production line for dipping and drying carbon felts, which has the advantage of high dipping and drying efficiency of the carbon felts.

The carbon felt dipping and drying continuous production line comprises a double-station unwinding mechanism, a cutting and splicing mechanism, a material changing buffer mechanism, a dipping and gluing mechanism, a drying mechanism and a film covering and winding mechanism which are sequentially connected, wherein the double-station unwinding mechanism comprises two unwinding and splicing rollers, the two unwinding and splicing rollers are used for continuously conveying a plurality of carbon felt raw material rolls to the cutting and splicing mechanism, and the cutting and splicing mechanism is used for connecting the two carbon felt raw material rolls which continuously pass through; the material changing buffer mechanism comprises two limiting rollers arranged at intervals and two buffer rollers arranged between the limiting rollers, wherein the two buffer rollers are opposite, and the limiting rollers can move so as to be convenient for bending the carbon felt raw material between the limiting rollers.

According to the continuous carbon felt dipping and drying production line disclosed by the embodiment of the invention, when the carbon felt raw material roll on one unwinding roller is emptied and the tail end of the carbon felt raw material roll is moved to the cutting and tape splicing mechanism, the head end of the carbon felt raw material roll on the other unwinding roller is moved to the cutting and tape splicing mechanism and is connected with the tail end of the previous carbon felt raw material roll at the cutting and tape splicing mechanism. And before the tail end of the last carbon felt raw material roll moves to the cutting tape splicing mechanism, the buffer roller is moved firstly to bend the carbon felt raw material between the two limiting rollers, and then the length of the carbon felt raw material between the two limiting rollers is increased. At the moment, the buffer roller is moved in the opposite direction to enable the carbon felt raw material between the two limiting rollers to be gradually leveled, and then on the basis that the tail end of the previous carbon felt raw material roll is not moved so as to be connected with the head end of the next carbon felt raw material roll, the part, located between the two limiting rollers, of the previous carbon felt raw material roll can be continuously conveyed to the subsequent dipping feeding mechanism and the subsequent drying mechanism, so that the dipping and drying of the carbon felt are continuous, and the dipping and drying efficiency of the carbon felt is high.

In some embodiments, the number of the buffer rollers is two, the two buffer rollers are arranged at intervals and can rotate at the same speed along the same circumferential track, and the two buffer rollers are respectively arranged on two sides of the carbon felt raw material.

In some embodiments, both of the pay-off rollers are drive rollers.

In some embodiments, the cutting and splicing mechanism comprises a first orientation roller group, an adsorption plate, a second orientation roller group and a first traction roller which are sequentially arranged along the conveying direction of the carbon felt raw material, the first orientation roller group can guide the head end of the carbon felt raw material roll to the adsorption plate, the adsorption plate is used for placing an adhesive tape and driving the adhesive tape to adhere the tail end of the downstream carbon felt raw material and the head end of the upstream carbon felt raw material, and the first traction roller is used for conveying the carbon felt material to the material changing buffer mechanism.

In some embodiments, the dip-sizing mechanism comprises:

the device comprises an impregnation tank and a batching tank, wherein the impregnation tank is provided with a feeding hole and a feed back hole, the feed back hole is higher than the feeding hole, and the feeding hole and the feed back hole are respectively communicated with an outlet and an inlet of the batching tank;

the diaphragm pump is connected in series between the outlet of the batching tank and the feed inlet of the dipping tank; and

and the concentration detector is arranged in the impregnation tank.

In some embodiments, the dipping and gluing mechanism further comprises a second traction roller, a first guide roller and a second guide roller which are sequentially connected, wherein the first guide roller and the second guide roller are arranged in the dipping tank and used for pressing against the upper surface of the carbon felt raw material, the first guide roller and the second guide roller are arranged at intervals along the length direction of the dipping tank, the second traction roller is arranged above the dipping tank, and the second traction roller and the first guide roller are movable along the length direction of the dipping tank.

In some embodiments, the dipping glue mechanism further comprises an ultrasonic vibration plate and/or a stirring paddle arranged in the dipping tank.

In some embodiments, the continuous carbon felt impregnation and drying production line further comprises a double-roller quantitative mechanism connected between the impregnation sizing mechanism and the drying mechanism, and the double-roller quantitative mechanism comprises:

the carbon felt extrusion device comprises a first compression roller and a second compression roller, wherein the first compression roller and the second compression roller are arranged at intervals, and a gap for carbon felt materials to pass through so as to extrude the carbon felt materials is formed between the first compression roller and the second compression roller;

the spraying system comprises a first spraying piece facing the first compression roller, a second spraying piece facing the second compression roller, a circulating tank communicated with the first spraying piece and the second spraying piece, a first liquid receiving box and a second liquid receiving box communicated with the circulating tank, and a driving piece for driving a spraying liquid circulating flow channel, wherein the first liquid receiving box is positioned below the first compression roller, and the second liquid receiving box is positioned below the second compression roller; and

the first scraper is abutted against the peripheral face of the first pressing roller, and the second scraper is abutted against the peripheral face of the second pressing roller.

In some embodiments, the drying mechanism comprises:

the drying oven is internally provided with at least two rows of drying cavities which are arranged in the horizontal direction, a third guide roller is arranged in each drying cavity, and the third guide rollers are used for vertically distributing carbon felt materials in the at least two rows of drying cavities;

the deviation correcting device is connected with the oven; and

the heat preservation box is internally provided with a heating assembly, and the deviation correcting device is arranged in the heat preservation box.

In some embodiments, the film take-up mechanism includes:

the winding device comprises a first winding roller and a second winding roller, wherein the positions of the first winding roller and the second winding roller can be switched;

the protective film unreeling station is connected with the first reeling roller or the second reeling roller which is located at a set position.

Drawings

Fig. 1 is a schematic view of a carbon felt impregnation drying continuous production line according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a cutting and splicing mechanism in a carbon felt impregnation drying continuous production line according to an embodiment of the invention.

Fig. 3 is a schematic diagram of a material change buffer mechanism in a carbon felt impregnation drying continuous production line according to an embodiment of the invention.

Fig. 4 is another schematic diagram of a refueling buffer mechanism in a carbon felt impregnation drying continuous production line according to an embodiment of the invention.

Fig. 5 is a schematic diagram of a dipping and gluing mechanism in a carbon felt dipping and drying continuous production line according to an embodiment of the invention.

Fig. 6 is a schematic view of a pair roller dosing mechanism in a carbon felt impregnation drying continuous production line according to an embodiment of the invention.

Fig. 7 is a schematic diagram of a drying mechanism in a carbon felt impregnation drying continuous production line according to an embodiment of the invention.

Fig. 8 is a schematic diagram of a film covering and winding mechanism in a carbon felt impregnation drying continuous production line according to an embodiment of the invention.

Reference numerals:

1. a double-station unwinding mechanism; 11. unwinding and passing through a roller; 2. a cutting tape splicing mechanism; 21. a first set of steering rollers; 22. an adsorption plate; 23. a second set of directional rollers; 24. a first pull roll; 3. a material changing buffer mechanism; 31. a limiting roller; 32. a buffer roller; 4. a dipping and gluing mechanism; 41. an impregnation tank; 411. a feed inlet; 412. a feed back port; 42. a second pull roll; 43. a first guide roller; 44. a second guide roller; 45. an ultrasonic vibration plate; 46. a stirring paddle; 5. a drying mechanism; 51. an oven; 52. a deviation correcting device; 53. a heat preservation box; 6. a pair roller dosing mechanism; 61. a first press roll; 62. a second press roll; 63. a first spray member; 64. a second spray member; 65. a circulation tank; 66. a first liquid receiving box; 67. a second liquid receiving box; 68. a first scraper; 69. a second scraper; 7. a film covering and winding mechanism; 71. a first wind-up roll; 72. a second wind-up roll; 73. and the protective film unreeling station.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

The continuous production line for impregnating and drying the carbon felt according to the embodiment of the invention is described below with reference to fig. 1 to 8.

The continuous production line for impregnating, drying and winding the carbon felt comprises a double-station unwinding mechanism 1, a cutting and belt splicing mechanism 2, a material changing buffer mechanism 3, an impregnating and gluing mechanism 4, a drying mechanism 5 and a film coating and winding mechanism 7 which are sequentially connected. The double-station unreeling mechanism 1 comprises two unreeling passing rollers 11, the two unreeling passing rollers 11 are used for continuously conveying a plurality of carbon felt raw material rolls to the cutting and tape splicing mechanism 2, and the cutting and tape splicing mechanism 2 is used for connecting the two carbon felt raw material rolls which pass continuously. Specifically, two unwinding rollers 11 in the double-station unwinding mechanism 1 are used for placing carbon felt raw material rolls, and the carbon felt raw material rolls are sequentially conveyed to the cutting belt splicing mechanism 2.

The material changing buffer mechanism 3 comprises two limiting rollers 31 arranged at intervals and a buffer roller 32 positioned between the two limiting rollers 31, wherein the buffer roller 32 is movable relative to the two limiting rollers 31 so as to bend the carbon felt raw material positioned between the two limiting rollers 31. Wherein, two spacing rollers 31 are fixed rollers.

According to the continuous production line for dipping and drying the carbon felt, provided by the embodiment of the invention, when the carbon felt raw material roll on one unwinding roller 11 is emptied and the tail end moves to the cutting and tape splicing mechanism 2, the head end of the carbon felt raw material roll on the other unwinding roller 11 moves to the cutting and tape splicing mechanism 2 and is connected with the tail end of the previous carbon felt raw material roll at the cutting and tape splicing mechanism 2. And before the tail end of the previous carbon felt raw material roll moves to the cutting tape splicing mechanism 2, the buffer roller 32 is moved to bend the carbon felt raw material between the two limiting rollers 31, so that the length of the carbon felt raw material between the two limiting rollers 31 is increased. At this time, the buffer roller 32 is moved in the opposite direction to gradually level the carbon felt material between the two limiting rollers 31, and then on the basis that the tail end of the previous carbon felt material roll is not moved so as to be connected with the head end of the next carbon felt material roll, the part between the two limiting rollers 31 in the previous carbon felt material roll is continuously conveyed to the subsequent dipping and feeding mechanism and the drying mechanism 5, so that the dipping and drying of the carbon felt are continuous, and the dipping and drying efficiency of the carbon felt is high.

In some embodiments, as shown in fig. 3 and 4, the number of the buffer rollers 32 is two, two buffer rollers 32 are arranged at intervals and can rotate at the same speed along the same circumferential track, and two buffer rollers 32 are respectively arranged on two sides of the carbon felt raw material.

Specifically, two buffer rolls 32 are all installed on a carousel, rotate through the carousel and can make two buffer rolls 32 oppress the carbon felt raw materials simultaneously for the carbon felt raw materials that are located between two spacing rollers 31 are buckled and are the S type. Therefore, when the buffering length of the carbon felt raw material between the two limiting rollers 31 is longer, the bending angle of the carbon felt raw material cannot be too large to cause porosity change, and the yield of the carbon felt raw material is further ensured.

In addition, as shown in fig. 3, when the carbon felt raw material roll does not need to be replaced, the buffer roller 32 does not press the carbon felt raw material basically, and the carbon felt raw material located between the two limiting rollers 31 is in an unbent flat state, so that the porosity change of the carbon felt raw material due to bending is avoided.

In some embodiments, both pay-off rollers 11 are drive rollers.

The required tension range of the carbon felt raw material roll is 4N-8N, the base material can not be stretched and deformed, and the carbon felt raw material is actively discharged by setting the roll-over roll 11 as a driving roll, so that the running damping is effectively reduced.

In some embodiments, as shown in fig. 2, the cutting and splicing mechanism 2 includes a first orientation roller group 21, an adsorption plate 22, a second orientation roller group 23, and a first drawing roller 24, which are arranged in this order in the conveying direction of the carbon felt raw material. The first orientation roller group 21 can lead the head end of the carbon felt raw material roll to the position of the adsorption plate 22, the adsorption plate 22 is used for placing the adhesive tape and driving the adhesive tape to adhere to the tail end of the downstream carbon felt raw material and the head end of the upstream carbon felt raw material, and the first drawing roller 24 is used for conveying the carbon felt material to the material changing buffer mechanism 3.

The head end of one of the carbon felt raw material rolls and the tail end of the other carbon felt raw material roll are accurately positioned at the adsorption plate 22 through the first orientation roller group 21 and the second orientation roller group 23 respectively, so that the adsorption plate 22 drives the adhesive tape to complete the bonding of the head end and the tail end of the two carbon felt raw material rolls, and the tape splicing action is automatically completed.

Specifically, the first and second orientation roller sets 21 and 23 each include two orientation rollers arranged at intervals in the up-down direction, and the two orientation rollers realize the positioning of the carbon felt raw material located therebetween. For example, when the carbon felt material roll is replaced, the second directional roller group 23 is combined with the first drawing roller 24 to fix the tail end of the downstream carbon felt material roll so as to ensure that the carbon felt material on the material replacement buffer mechanism 3 is kept in a tension state before and after the buffering, and ensure the stable conveying of the carbon felt material at the position to the downstream.

The adhesive tape used for bonding the carbon felt raw material roll can maintain its viscosity under the subsequent immersion of the impregnation solution containing ethanol and resin, and can withstand the high temperature of the drying process.

In some embodiments, as shown in FIG. 5, the dip-coating mechanism 4 includes a dip tank 41, a dosing tank, a diaphragm pump, and a consistency detector. The dipping tank 41 has a feed port 411 and a feed back port 412, the feed back port 412 is higher than the feed port 411, and the feed port 411 and the feed back port 412 are respectively communicated with the outlet and the inlet of the batching tank. The diaphragm pump is connected in series between the outlet of the dosing tank and the inlet 411 of the impregnation tank 41. The concentration detector is disposed in the dipping tank 41.

Impregnating vessel 41 is used for the flooding rubberizing of carbon felt raw materials, and the impregnating solution passes through the diaphragm pump by feed inlet 411 and carries to impregnating vessel 41, circulates the impregnating solution to the batching jar by feed back 412 again, and cooperation concentration detector through the mode of extrinsic cycle, ensures that the impregnating solution concentration in impregnating vessel 41 keeps in a qualified interval to guarantee the flooding rubberizing reliability to the carbon felt raw materials.

Specifically, the feed opening 411 is adjacent to the bottom of the impregnation tank 41, and the return opening 412 is adjacent to the upper end of the impregnation tank 41.

In some embodiments, as shown in fig. 5, the dip gluing mechanism 4 further comprises a second pull roll 42, a first guide roll 43 and a second guide roll 44, which are sequentially engaged. A first guide roller 43 and a second guide roller 44 are disposed in the impregnation tank 41 and are used to press against the upper surface of the carbon felt raw material, the first guide roller 43 and the second guide roller 44 are arranged at intervals along the length direction of the impregnation tank 41, the second drawing roller 42 is disposed above the impregnation tank 41, and the second drawing roller 42 and the first guide roller 43 are movable along the length direction of the impregnation tank 41.

The carbon felt raw material is pressed by the first guide roll 43 and the second guide roll 44 into the impregnation liquid in the impregnation tank 41 to complete the sufficient impregnation. Wherein the second drawing roller 42 and the first guide roller 43 have the function of moving, and the time for impregnating the carbon felt can be adjusted online.

In some embodiments, the dip-coating mechanism 4 further comprises an ultrasonic vibrating plate 45 and/or a stirring paddle 46 mounted in the dip tank 41. Specifically, as shown in fig. 5, a plurality of sets of ultrasonic vibration plates 45 and stirring paddles 46 are installed in the dipping tank 41 at the same time to accelerate the premixing effect of the dipping solution at the initial stage of blending, and in addition, the ultrasonic vibration plates 45 can also be used for ultrasonic cleaning in the dipping tank 41 to assist manual cleaning, so as to achieve the function of rapidly cleaning the dipping tank 41.

In some embodiments, as shown in fig. 5, the continuous carbon felt impregnation and drying line further comprises a double-roll dosing mechanism 6 coupled between the impregnation sizing mechanism 4 and the drying mechanism 5, wherein the double-roll dosing mechanism 6 comprises a first press roll 61, a second press roll 62, a spraying system, a first scraper 68 and a second scraper 69. The first pressing roller 61 and the second pressing roller 62 are arranged at intervals, and a gap for the carbon felt material to pass through so as to extrude the carbon felt material is formed between the first pressing roller 61 and the second pressing roller 62. The spraying system comprises a first spraying part 63 facing the first press roll 61, a second spraying part 64 facing the second press roll 62, a circulating tank 65 communicated with the first spraying part 63 and the second spraying part 64, a first liquid receiving box 66 and a second liquid receiving box 67 communicated with the circulating tank 65, and a driving part for driving a spraying liquid circulating flow channel, wherein the first liquid receiving box 66 is positioned below the first press roll 61, and the second liquid receiving box 67 is positioned below the second press roll 62. The first blade 68 abuts against the outer circumferential surface of the first pressure roller 61, and the second blade 69 abuts against the outer circumferential surface of the second pressure roller 62.

The first press roller 61 and the second press roller 62 scrape off the excess resin on the impregnated carbon felt material to realize the control of the gluing amount of the carbon felt material. The first and second blades 68 and 69 serve to scrape off the resin adhering to the outer surfaces of the first and second press rollers 61 and 62, respectively, thereby ensuring uniform gap between the first and second press rollers 61 and 62. In addition, the first and second showers 63 and 64 shower the ethanol solvent to the first and second pressing rollers 61 and 62, respectively, to further achieve the cleaning of the resin on the first and second pressing rollers 61 and 62. And the sprayed ethanol solvent flows to the first liquid receiving box 66 and the second liquid receiving box 67 and then enters the circulating tank 65, and is repeatedly used under the driving of the driving piece, so that the recycling of the ethanol solvent is completed, and the use cost of enterprises is reduced.

Specifically, the spraying system further comprises a filtering device, and the ethanol solvent in the first liquid receiving box 66 and the second liquid receiving box 67 is filtered by the filtering device and then enters the circulation tank 65 for recycling. The first spray 63 is located above the first scraper 68 and the second spray 64 is located above the second scraper 69, whereby the first spray 63 and the second spray 64 also effect cleaning of the first scraper 68 and the second scraper 69.

Illustratively, the gap between the first press roller 61 and the second press roller 62 is adjustable to adjust the sizing amount of the carbon felt material.

In some embodiments, as shown in fig. 6, the drying mechanism 5 includes an oven 51, a deviation rectifying device 52 and an incubator 53, the oven 51 has at least two rows of drying cavities arranged in a horizontal direction, each drying cavity has a third guide roller, and the third guide rollers are used for vertically distributing the carbon felt material in the at least two rows of drying cavities. The deviation correcting device 52 is connected with the oven 51. The insulation can 53 is internally provided with a heating assembly, and the deviation rectifying device 52 is arranged in the insulation can 53.

The carbon felt raw material is dried in the oven 51 in a vertical ascending and descending manner, so that the uniformity of the carbon felt raw material after two sides are soaked and dried is ensured. The deviation correcting device 52 is used for correcting the deviation of the carbon felt raw material so as to facilitate the deviation of the carbon felt raw material from the conveying roller in the oven 51. The heating assembly in the thermal insulation box 53 ensures that the carbon felt raw material at the position of the deviation correcting device 52 and the carbon felt raw material in the oven 51 generate temperature difference to apply the quality of the carbon felt raw material.

Specifically, as shown in fig. 6, there are a plurality of drying ovens 51, the plurality of drying ovens 51 are sequentially connected through a deviation rectifying device 52, a drying cavity formed by the plurality of drying ovens 51 is divided into a plurality of drying areas, the drying area located at the upstream is a pre-drying area, a large amount of ethanol volatilizes in the pre-drying area, the carbon felt raw material can quickly reach a surface drying state, and the surface-dried carbon felt raw material enters a subsequent drying area to be vertically dried and cured.

In some embodiments, as shown in fig. 8, the film winding mechanism 7 includes a first winding roller 71, a second winding roller 72, and a protective film unwinding station 73, and the positions of the first winding roller 71 and the second winding roller 72 are switchable. The protective film unwinding station 73 is connected with the first winding roller 71 or the second winding roller 72 at a set position. First wind-up roll 71 and second wind-up roll 72 all can move in proper order to the settlement position and carry out the rolling to guarantee not stopping the rolling, protection film unreels station 73 and is used for carrying out the tectorial membrane when the carbon felt raw materials carries out the rolling.

It should be noted that, a material receiving buffer mechanism with the same structure as the material changing buffer mechanism 3 is further connected to the upstream of the film covering and winding mechanism 7 to ensure the subsequent non-stop roll changing of the first winding roller 71 and the second winding roller 72. Moreover, the protective film unwinding station 73 adopts a servo motor and a magnetic powder brake for unwinding, and has the functions of roll diameter calculation and material-free alarm, and the specific structure of the protective film unwinding station is the prior art and is not described herein again.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A continuous production line for dipping and drying carbon felt is characterized by comprising a double-station unwinding mechanism, a cutting and splicing mechanism, a material changing buffer mechanism, a dipping and gluing mechanism, a drying mechanism and a film covering and winding mechanism which are sequentially connected, wherein the double-station unwinding mechanism comprises two unwinding and splicing rollers, the two unwinding and splicing rollers are used for continuously conveying a plurality of carbon felt raw material rolls to the cutting and splicing mechanism, and the cutting and splicing mechanism is used for connecting the two carbon felt raw material rolls which pass continuously; wherein the content of the first and second substances,

the material changing buffer mechanism comprises two limiting rollers arranged at intervals and two buffer rollers arranged between the limiting rollers, wherein the two buffer rollers are opposite, and the two limiting rollers can move so as to be convenient for bending the carbon felt raw material between the two limiting rollers.

2. The carbon felt impregnation drying continuous production line as claimed in claim 1, wherein the number of the buffer rollers is two, the two buffer rollers are arranged at intervals and can rotate at the same speed along the same circumferential track, and the two buffer rollers are respectively arranged on two sides of the carbon felt raw material.

3. The carbon felt impregnation drying continuous production line as claimed in claim 1, wherein both the unwinding and passing rollers are driving rollers.

4. The carbon felt impregnation drying continuous production line as claimed in claim 1, wherein the cutting and splicing mechanism comprises a first directional roller set, an adsorption plate, a second directional roller set and a first drawing roller, which are sequentially arranged along a conveying direction of the carbon felt raw material, the first directional roller set is capable of guiding a head end of the carbon felt raw material roll to the adsorption plate, the adsorption plate is used for placing a rubber belt and driving the rubber belt to adhere to a tail end of a downstream carbon felt raw material and a head end of an upstream carbon felt raw material, and the first drawing roller is used for conveying the carbon felt material to the material changing buffer mechanism.

5. The carbon felt impregnation drying continuous production line as claimed in claim 1, wherein the impregnation gluing mechanism comprises:

the device comprises an impregnation tank and a batching tank, wherein the impregnation tank is provided with a feeding hole and a feed back hole, the feed back hole is higher than the feeding hole, and the feeding hole and the feed back hole are respectively communicated with an outlet and an inlet of the batching tank;

the diaphragm pump is connected in series between the outlet of the batching tank and the feed inlet of the dipping tank; and

and the concentration detector is arranged in the impregnation tank.

6. The carbon felt impregnation drying continuous production line as claimed in claim 5, wherein the impregnation gluing mechanism further comprises a second traction roller, a first guide roller and a second guide roller which are sequentially connected, the first guide roller and the second guide roller are arranged in the impregnation tank and used for pressing against the upper surface of the carbon felt raw material, the first guide roller and the second guide roller are arranged at intervals along the length direction of the impregnation tank, the second traction roller is arranged above the impregnation tank, and the second traction roller and the first guide roller are movable along the length direction of the impregnation tank.

7. The carbon felt impregnation drying continuous production line as claimed in claim 5, wherein the impregnation gluing mechanism further comprises an ultrasonic vibration plate and/or a stirring paddle installed in the impregnation tank.

8. The continuous production line for impregnation and drying of the carbon felt according to claim 1, further comprising a pair roller quantitative mechanism connected between the impregnation gluing mechanism and the drying mechanism, wherein the pair roller quantitative mechanism comprises:

the carbon felt extrusion device comprises a first compression roller and a second compression roller, wherein the first compression roller and the second compression roller are arranged at intervals, and a gap for carbon felt materials to pass through so as to extrude the carbon felt materials is formed between the first compression roller and the second compression roller;

the spraying system comprises a first spraying piece facing the first compression roller, a second spraying piece facing the second compression roller, a circulating tank communicated with the first spraying piece and the second spraying piece, a first liquid receiving box and a second liquid receiving box communicated with the circulating tank, and a driving piece for driving a spraying liquid circulating flow channel, wherein the first liquid receiving box is positioned below the first compression roller, and the second liquid receiving box is positioned below the second compression roller; and

the first scraper is abutted against the peripheral face of the first pressing roller, and the second scraper is abutted against the peripheral face of the second pressing roller.

9. The carbon felt impregnation drying continuous production line as claimed in claim 1, wherein the drying mechanism comprises:

the drying oven is internally provided with at least two rows of drying cavities which are arranged in the horizontal direction, a third guide roller is arranged in each drying cavity, and the third guide rollers are used for vertically distributing carbon felt materials in the at least two rows of drying cavities;

the deviation correcting device is connected with the oven; and

the heat preservation box is internally provided with a heating assembly, and the deviation correcting device is arranged in the heat preservation box.

10. The carbon felt impregnation drying continuous production line as claimed in claim 1, wherein the film covering and winding mechanism comprises:

the winding device comprises a first winding roller and a second winding roller, wherein the positions of the first winding roller and the second winding roller can be switched;

the protective film unreeling station is connected with the first reeling roller or the second reeling roller which is located at a set position.

Images