Carbon fiber precursor drying and densifying equipment

Abstract

The utility model discloses a carbon fiber precursor drying densification device, relates to the technical field of carbon fiber precursors, and adopts the technical scheme that the carbon fiber precursor drying densification device comprises a box body and heat insulation plates, the box body is divided into an initial preheating area, a quick drying area, a fine drying area and a constant-temperature curing area through the heat insulation plates, and each heat insulation plate is provided with a temperature sensor and a through hole; an adjusting plate in sliding fit with the heat insulation plate is arranged at the upper end of the heat insulation plate, a driving mechanism used for driving the adjusting plate to rotate is arranged on the box body, and the temperature sensor is electrically connected with the driving mechanism. The box body is divided into the initial preheating area, the rapid drying area, the fine drying area and the constant-temperature curing area, gradient temperature control is adopted, accurate regulation and control are carried out according to the characteristics of carbon fiber precursors in different drying stages, the problems of insufficient drying and hard surface shell caused by a traditional single stable drying mode are solved, and the drying efficiency is improved. Water in the carbon fiber precursor can be fully discharged, and the densification degree of the carbon fiber precursor is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to carbon fiber precursor technical field, more specifically, it relates to a kind of carbon fiber precursor drying densification equipment. BACKGROUND

[0002] Carbon fiber is with polyacrylonitrile (PAN) fiber, viscose fiber or pitch fiber as precursor, by heating to remove all elements except carbon and make a kind of high-strength, high-modulus fiber, it has good chemical stability and high temperature resistance, corrosion resistance, friction resistance, fatigue resistance and other properties, it is excellent structural material in the preparation of high-performance composite reinforcing material, therefore be widely used in textile, chemical, machinery, aviation, building, sporting goods and other fields.

[0003] In the carbon fiber precursor production process, drying densification link is crucial, it directly affects the final performance of carbon fiber precursor, currently carbon fiber precursor drying densification process adopts single temperature to dry, this drying mode has many problems, for example, single temperature is difficult to make the internal moisture of precursor fully discharge, and the surface of precursor is easy to dry quickly and form hard shell, hinder internal moisture evaporation, so as to cause uneven moisture in precursor, dry insufficiently, affect densification effect;At the same time, single temperature cannot be accurately controlled according to the characteristics of precursor drying different stages, so that the structure and performance of precursor are difficult to achieve optimal.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0005] The purpose of the embodiment of the utility model is to provide a kind of carbon fiber precursor drying densification equipment to solve the above-mentioned problems.

[0006] The above technical purpose of the embodiment of the utility model is realized by the following technical scheme: a kind of carbon fiber precursor drying densification equipment, including box, the box is fixedly connected with several equidistant distribution heat insulation plates, the box is divided into initial preheating zone, fast drying zone, fine drying zone and constant temperature curing zone by heat insulation plate, the initial preheating zone, fast drying zone, fine drying zone and constant temperature curing zone are all provided with guide roller and press roller, the guide roller and press roller are distributed in dislocation, the box is provided with lifting mechanism for driving press roller lifting, each heat insulation plate is all provided with temperature sensor and perforation, the upper end of heat insulation plate is provided with the adjusting plate that is slidably connected with heat insulation plate, the box is provided with the drive mechanism for driving adjusting plate rotation, the temperature sensor is electrically connected with drive mechanism, the bottom of the box in fast drying zone and fine drying zone is provided with heating pipe.

[0007] The utility model further sets up: the upper end of heat insulation board is provided with the cavity for adjusting board sliding in and the chute connected with the cavity, the lower end of adjusting board is provided with the sliding block of chute sliding cooperation.

[0008] The utility model further sets up: drive mechanism includes the first drive motor of fixed connection on the box, the output fixedly connected with screw rod of first drive motor, screw rod is located in the chute and is connected with sliding block screw.

[0009] The utility model further sets up: the lifting mechanism includes the second drive motor of fixed connection on the box, the output fixedly connected with lifting wheel of second drive motor, is wound with pull rope on lifting wheel, pull rope is fixedly connected with pressure wire roller, is provided with the long groove of pressure wire roller sliding cooperation on the box.

[0010] The utility model further sets up: the upper end of box is provided with a plurality of fan and circulation pipeline of box intercommunication.

[0011] Summarized above, the utility model has following beneficial effect:

[0012] Through the box is divided and forms initial preheating area, fast drying area, fine drying area and constant temperature solidification area, adopts gradient temperature control, according to the characteristics of carbon fiber raw wire in different drying stages accurate control, avoid the drying insufficiency and surface hard shell problem caused by traditional single stable drying mode, make carbon fiber raw wire internal moisture can be fully discharged, significantly improve the densification degree and quality of carbon fiber raw wire, when the box works, through the heating pipe in fast drying area and constant temperature solidification area heating, adjusting plate is located in the cavity, each area is interconnected, through the heating of heating pipe makes each area temperature rise, and when temperature rises to set temperature, temperature sensor works and drives drive mechanism to work and drive adjusting plate to slide, makes each area insulate, forms gradient temperature control, thereby can utilize heat energy reasonably, avoid unnecessary high temperature heating, reduced energy consumption. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the structure schematic drawing of carbon fiber raw wire drying densification equipment of the utility model,

[0014] Figure 2 It is Figure 1 The enlarged view of A in,

[0015] Figure 3 It is the structure schematic drawing of heat insulation board in the utility model,

[0016] Figure 4 It is the sectional view of heat insulation board in the utility model.

[0017] Label: 1, box; 2, heat insulation plate; 3, initial preheating zone; 4, rapid drying zone; 5, fine drying zone; 6, constant temperature curing zone; 7, godet roller; 8, press roller; 9, lifting mechanism; 10, temperature sensor; 11, perforation; 12, adjusting plate; 13, heating pipe; 14, cavity; 15, chute; 16, sliding block; 17, first drive motor; 18, screw rod; 19, second drive motor; 20, lifting wheel; 21, pull rope; 22, long slot; 23, fan; 24, circulating pipeline. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] In a feasible embodiment, referring to Figure 1 As shown in the figure, a carbon fiber precursor drying densification equipment, including box 1, box 1 is fixedly connected with a plurality of equidistant distribution heat insulation plate 2, box 1 is divided into initial preheating zone 3, rapid drying zone 4, fine drying zone 5 and constant temperature curing zone 6 through heat insulation plate 2, initial preheating zone 3, rapid drying zone 4, fine drying zone 5 and constant temperature curing zone 6 are provided with godet roller 7 and press roller 8, godet roller 7 and press roller 8 are distributed in staggered, heat insulation plate 2 is provided with the perforation 11 for carbon fiber precursor, through godet roller 7 and press roller 8 can drive carbon fiber precursor transmission in box 1, wherein the temperature of rapid drying zone 4 and fine drying zone 5 is higher, the temperature of initial preheating zone 3 and constant temperature curing zone 6 is lower, by adopting the way of gradient temperature control, can be accurately controlled according to the characteristics of carbon fiber precursor in different drying stages, avoid the problem of drying insufficient and surface hard shell caused by traditional single temperature drying mode, make the moisture in the carbon fiber precursor can be fully discharged, thereby significantly improve the densification degree and quality of carbon fiber precursor.

[0020] Further, referring to Figure 1 And Figure 2As shown, the box 1 is provided with a lifting mechanism 9 for driving the pressure roller 8 to lift, the pressure roller 8 is driven to slide to different heights by the lifting mechanism 9, so that the roll gap between the guide roller 7 and the pressure roller 8 can be changed, so that the stable tension during operation can be ensured, and the roll gap can also be changed to produce carbon fiber filaments of different thicknesses. The lifting mechanism 9 includes a second driving motor 19 fixedly connected to the box 1, the output end of the second driving motor 19 is fixedly connected with a lifting wheel 20, the lifting wheel 20 is wound with a pull rope 21, the pull rope 21 is fixedly connected with the pressure roller 8, the box 1 is provided with a long groove 22 which is in sliding cooperation with the pressure roller 8, the second driving motor 19 is started, and the pressure roller 8 is driven to slide longitudinally by the forward and reverse rotation of the lifting wheel 20, which is simple and convenient to operate.

[0021] Further, please refer to Figure 1 、 Figure 3 and Figure 4 As shown, the upper end of the heat insulation plate 2 is provided with an adjusting plate 12 which is in sliding cooperation with the heat insulation plate 2, the box 1 is provided with a driving mechanism for driving the adjusting plate 12 to rotate, each heat insulation plate 2 is provided with a temperature sensor 10, the temperature sensor 10 is electrically connected with the driving mechanism, the box 1 is provided with a heating pipe 13 at the bottom of the rapid drying area 4 and the fine drying area 5, the box 1 is heated by the heating pipe 13 located in the rapid drying area 4 and the constant temperature curing area 6 when the box 1 is working, at this time, the various areas are connected with each other, the temperature of each area is increased by the heating of the heating pipe 13, and when the temperature increases to the set temperature, the temperature sensor 10 works and drives the driving mechanism to work to drive the adjusting plate 12 to slide, so that each area is isolated, forming a gradient temperature control, so that the heat energy can be reasonably utilized, unnecessary high temperature heating is avoided, and energy consumption is reduced. When the temperature decreases, the temperature sensor 10 works again to make the adjusting plate 12 slide, so that the rapid drying area 4 is connected with the preheating initial area or the fine drying area 5 is connected with the constant temperature curing area 6, and the low temperature area is heated.

[0022] Further, please refer to Figure 1 、 Figure 3 and Figure 4 As shown, the upper end of the heat insulation plate 2 is provided with a cavity 14 for the sliding of the adjusting plate 12 and a sliding groove 15 connected with the cavity 14, the lower end of the adjusting plate 12 is provided with a sliding block 16 which is in sliding cooperation with the sliding groove 15, the driving mechanism includes a first driving motor 17 fixedly connected to the box 1, the output end of the first driving motor 17 is fixedly connected with a lead screw 18, the lead screw 18 is located in the sliding groove 15 and is threadedly connected with the sliding block 16, the output of the first driving mechanism can drive the rotation of the lead screw 18, so as to drive the sliding block 16 which is threadedly connected with the lead screw 18 to slide in the sliding groove 15, and further drive the sliding of the adjusting plate 12, so as to achieve the purpose of isolating and connecting each area.

[0023] Further, please refer to Figure 1 As shown, the upper end of the box 1 is provided with several fans 23 and circulating pipes 24 communicated with the box 1, through the setting of the fan 23 and the circulating pipe 24, the water vapor generated in the drying process can be discharged in time, improve the drying efficiency.

[0024] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that the skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A carbon fiber precursor filament drying densification apparatus comprising a housing (1), characterized in that: The box (1) is fixedly connected with a plurality of equidistant distribution heat insulation plates (2), the box (1) is divided into initial preheating zone (3), fast drying zone (4), fine drying zone (5) and constant temperature curing zone (6) by heat insulation plate (2), the initial preheating zone (3), fast drying zone (4), fine drying zone (5) and constant temperature curing zone (6) are all provided with guide roller (7) and press roller (8), the guide roller (7) and press roller (8) are distributed in staggered, the box (1) is provided with lifting mechanism (9) for driving press roller (8) lifting, each heat insulation plate (2) is provided with temperature sensor (10) and perforated (11), the upper end of heat insulation plate (2) is provided with adjusting plate (12) with heat insulation plate (2) sliding fit, the box (1) is provided with drive mechanism for driving adjusting plate (12) rotation, the temperature sensor (10) is electrically connected with drive mechanism, the bottom of the box (1) in fast drying zone (4) and fine drying zone (5) is provided with heating pipe (13).

2. A carbon fiber precursor filament drying densification apparatus according to claim 1, characterized by: The upper end of the heat insulation plate (2) is provided with a cavity (14) for the sliding of the adjusting plate (12) and a chute (15) connected to the cavity (14), and the lower end of the adjusting plate (12) is provided with a sliding block (16) slidingly connected to the chute (15).

3. A carbon fiber precursor filament drying densification apparatus according to claim 2, characterized by: The drive mechanism comprises a first drive motor (17) fixedly connected to the box (1), and a screw rod (18) fixedly connected to the output end of the first drive motor (17), wherein the screw rod (18) is located in the chute (15) and is threadedly connected to the sliding block (16).

4. The carbon fiber precursor drying and densification apparatus according to claim 1, wherein: The lifting mechanism (9) comprises a second drive motor (19) fixedly connected to the box (1), and a lifting wheel (20) fixedly connected to the output end of the second drive motor (19), wherein the lifting wheel (20) is wound with a pull rope (21), the pull rope (21) is fixedly connected to the press roller (8), and the box (1) is provided with a long groove (22) slidingly connected to the press roller (8).

5. The carbon fiber precursor drying and densification apparatus according to claim 1, wherein: The upper end of the box (1) is provided with a plurality of fans (23) and circulating pipelines (24) connected to the box (1).

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