A pyrolysis system for carbon fibers

Abstract

The present application belongs to the technical field of carbon fiber plastic recycling, and particularly relates to a carbon fiber pyrolysis system. The carbon fiber pyrolysis system comprises a pyrolysis box, a gas outlet pipe fixedly connected to the upper side of the pyrolysis box and in communication with the pyrolysis box, a recovery box fixedly connected to the upper side of the pyrolysis box, the recovery box being provided in a ring structure and sleeved outside the gas outlet pipe, a plurality of recovery pipes circumferentially and uniformly arranged between the recovery box and the gas outlet pipe, and a liquid outlet pipe fixedly connected to the bottom of the recovery box and in communication with the recovery box. The pyrolysis gas is discharged and collected through the gas outlet pipe at the top. In this process, if the pyrolysis gas is condensed in advance inside the gas outlet pipe, the condensed liquid naturally falls along the inner sidewall of the gas outlet pipe and automatically flows into the recovery box through the inclined recovery pipes, and is finally discharged and collected through the liquid outlet pipe. This operation can reduce the problem of backflow of the condensed liquid into the pyrolysis box, and improve the recovery efficiency and degree of the pyrolysis gas and the condensed liquid.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of carbon fiber plastic recycling, and particularly relates to a carbon fiber pyrolysis system. BACKGROUND

[0002] Carbon fiber plastics, commonly known as carbon fiber reinforced plastics, have very high mechanical properties and strength comparable to metals, and can replace aluminum, copper, steel and other materials. Carbon fiber plastic waste has high recycling value, and is usually recycled by pyrolysis.

[0003] A carbon fiber plastic recycling pyrolysis device is disclosed in a Chinese patent with publication number CN113997461A, which comprises a pyrolysis tank body, a circular cover is arranged at the upper end of the pyrolysis tank body, a plurality of circular connecting rods are fixed at the lower end of the circular cover, a plurality of perforated plates for placing carbon fiber plastics are fixed at the lower end of the circular connecting rods, and a displacement mechanism is installed at the top of the circular cover. The sealing mechanism can effectively seal the pyrolysis tank body, reduce heat loss, improve the pyrolysis efficiency, and reduce the cost of pyrolysis. The structure of the tensioning mechanism can effectively re-tighten the pyrolysis tank body and the circular cover, avoid separation of the pyrolysis tank body and the circular cover during pyrolysis, improve the sealing between the pyrolysis tank body and the circular cover, and ensure the pyrolysis efficiency.

[0004] In the prior art, the carbon fiber plastic pyrolysis system needs to guide and collect the gas generated during pyrolysis through the gas outlet pipe at the top, but the temperature of the pyrolysis gas will drop after leaving the pyrolysis tank, which can easily condense inside the gas outlet pipe, and the condensed liquid will naturally fall down the inner wall of the gas outlet pipe, causing the condensed liquid to flow back into the pyrolysis tank, resulting in low collection efficiency of the pyrolysis gas and the condensed liquid.

[0005] Therefore, the application provides a carbon fiber pyrolysis system. SUMMARY

[0006] In order to make up for the shortcomings of the prior art and solve at least one technical problem in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the carbon fiber pyrolysis system comprises a pyrolysis box; the upper side of the pyrolysis box is fixedly connected and communicated with a gas outlet pipe; the upper side of the pyrolysis box is fixedly connected with a recovery box; the recovery box is arranged in an annular structure and is sleeved outside the gas outlet pipe, and there is a gap between the recovery box and the gas outlet pipe; a group of recovery pipes are uniformly distributed between the recovery box and the gas outlet pipe, and the recovery pipes communicate the recovery box and the gas outlet pipe; the recovery pipes are arranged in an inclined state, and the end of the recovery pipe close to the recovery box is lower in height; the bottom of the recovery box is fixedly connected and communicated with a liquid outlet pipe; in the prior art, the gas generated during pyrolysis needs to be discharged and collected through the gas outlet pipe at the top, but the temperature of the pyrolysis gas will drop after leaving the pyrolysis box, which can easily cause the pyrolysis gas to condense in the gas outlet pipe, and then the condensed liquid can naturally fall along the inner side wall of the gas outlet pipe, which can cause the condensed liquid to flow back into the pyrolysis box, thereby reducing the collection efficiency of the pyrolysis gas and the condensed liquid; at this time, the present application is provided with a recovery box and a plurality of recovery pipes, and when the carbon fiber plastic in the pyrolysis box is heated, the pyrolysis gas generated is discharged and collected through the gas outlet pipe at the top; in this process, if the pyrolysis gas condenses in the gas outlet pipe, the condensed liquid can naturally fall along the inner side wall of the gas outlet pipe and automatically flow into the recovery box through the inclined recovery pipe, and finally be discharged and collected through the liquid outlet pipe; this operation can reduce the problem of the condensed liquid flowing back into the pyrolysis box, and improve the recovery efficiency and degree of the pyrolysis gas and the condensed liquid.

[0008] Preferably, a blocking ring is fixedly connected to the position close to the lower side of the recovery pipe in the gas outlet pipe; the upper side of the blocking ring is arranged as a conical surface, and the position close to the recovery pipe on the upper side of the blocking ring is lower in height; by arranging the blocking ring, the blocking ring can block the falling of the condensed liquid, and after being blocked by the blocking ring, the condensed liquid can automatically flow into the recovery pipe through the conical surface on the upper side of the blocking ring, thereby avoiding the problem that part of the condensed liquid flows back to the pyrolysis box by bypassing the recovery pipe, and further improving the recovery degree of the condensed liquid.

[0009] Preferably, the bottom of the gas outlet pipe extends into the pyrolysis box; a servo motor is fixedly connected in the bottom of the gas outlet pipe; a rotating shaft is fixedly connected to the output shaft of the servo motor; a pair of scraping strips are fixedly connected to the rotating shaft through a support and extend above the blocking ring; during the pyrolysis process, the rotating shaft is slowly rotated by the servo motor, and then the rotating shaft drives the pair of scraping strips to slowly rotate, so that the scraping strips continuously scrape the inner side wall surface of the gas outlet pipe above the blocking ring, thereby accelerating the falling speed of the condensed liquid and reducing the residual condensed liquid on the inner side wall surface of the gas outlet pipe, thereby further improving the recovery efficiency of the condensed liquid.

[0010] Preferably, the outer side of the bottom of the rotating shaft is fixedly connected with a shaft sleeve; the outer side of the shaft sleeve is fixedly connected with a pair of leaf plates; the inner side wall surface of the bottom of the air outlet pipe is uniformly distributed with a group of elastic metal sheets; the leaf plates can contact the elastic metal sheets during rotation of the rotating shaft; the rotating shaft drives the leaf plates to rotate through the shaft sleeve; when the leaf plates rotate to the position of the elastic metal sheets, the elastic metal sheets are extruded and elastically deformed; after the leaf plates continue to rotate, the elastic metal sheets rebound and reset under the action of their own elastic force after the leaf plates pass the elastic metal sheets, and the air outlet pipe is vibrated; the vibration of the air outlet pipe and the scraping effect of the scraping strip further accelerate the falling speed of the condensed liquid on the inner side wall surface of the air outlet pipe.

[0011] Preferably, the outer side of the bottom of the air outlet pipe is fixedly connected with an annular sliding cavity; a pair of magnetic sliding blocks are slidingly connected inside the annular sliding cavity; the leaf plates are made of magnetic material and can generate an attractive force on the magnetic sliding blocks when the leaf plates are close to the magnetic sliding blocks; an annular plate is slidingly connected inside the recovery box; an elastic rope is fixedly connected between the upper side of the annular plate and the inner wall of the top of the recovery box; a pull rope is fixedly connected between the lower side of the annular plate and the magnetic sliding blocks, and the pull rope penetrates through the pyrolysis box and the annular sliding cavity and is slidingly connected therewith; when the leaf plates rotate to the position of the magnetic sliding blocks, the magnetic sliding blocks can generate an attractive force, and then the magnetic sliding blocks rotate together with the leaf plates inside the annular sliding cavity; the magnetic sliding blocks drive the annular plate to move downward synchronously through the pull rope, so that the annular plate extrudes the condensed liquid at the bottom of the recovery box and extrudes it through the liquid outlet pipe, improving the efficiency of the condensed liquid; when the annular plate moves to the bottom of the recovery box, the magnetic sliding blocks cannot slide any more, so the leaf plates and the magnetic sliding blocks are separated, the attractive force of the leaf plates on the magnetic sliding blocks decreases, and the annular plate is automatically reset upward under the tension of the elastic rope, so that the annular plate continuously reciprocates inside the recovery box.

[0012] Preferably, a pair of stop blocks are fixedly connected inside the annular sliding cavity; a compression spring is fixedly connected to the side of each stop block close to the magnetic sliding block; a push-back block is fixedly connected to the side of each compression spring away from the stop block, and the push-back block is made of flexible material; when the annular plate moves to the bottom of the recovery box, the magnetic sliding blocks are just at the stop blocks and compress the compression springs to store energy; when the leaf plates and the magnetic sliding blocks are separated, the annular plate is automatically reset upward under the tension of the elastic rope, the annular plate drives the magnetic sliding blocks to reset through the pull rope, and the compressed compression springs can generate a counterforce on the magnetic sliding blocks through the push-back blocks, so as to accelerate the sliding reset of the magnetic sliding blocks inside the annular sliding cavity, thereby improving the reset efficiency of the magnetic sliding blocks.

[0013] Preferably, the annular plate surface is uniformly distributed with a group of flow guide holes, and the flow guide holes penetrate the annular plate; because the annular plate moves downward, the recovery pipe is located above the annular plate, at this time, the condensed liquid flowing down through the recovery pipe will gather on the upper side of the annular plate, causing the subsequent condensed liquid at this position to be unable to be discharged through the liquid outlet pipe, therefore, by arranging the flow guide holes, the condensed liquid can flow to the lower side of the annular plate through the flow guide holes, and then when the annular plate moves downward next time, the condensed liquid can be squeezed out through the liquid outlet pipe, further improving the recovery degree of the condensed liquid, avoiding the problem that the condensed liquid on the upper side of the annular plate cannot be collected.

[0014] Preferably, the lower side of the flow guide hole is provided with a blocking ball, and the diameter of the blocking ball is greater than the diameter of the flow guide hole; a group of elastic strips are fixedly connected between the upper side of the blocking ball and the side wall of the flow guide hole, and the elastic strips are in a tension state; a group of guide rods are uniformly distributed on the inner wall surface of the top of the recovery box; the guide rods correspond to the flow guide holes one by one and are aligned with each other, and the diameter of the guide rod is smaller than the diameter of the flow guide hole; during the movement of the annular plate downward, the elastic strips pull the blocking ball tightly and make it fit on the lower side of the flow guide hole, so that the blocking ball seals the flow guide hole, avoiding the problem that when the annular plate moves to the bottom of the recovery box, the liquid pressure at the bottom is large, causing the condensed liquid to overflow upward through the flow guide hole, so that the condensed liquid is fully squeezed out through the liquid outlet pipe, improving the discharge efficiency of the condensed liquid, at this time, the condensed liquid flowing down from the recovery pipe collects on the upper side of the annular plate, and when the annular plate moves upward, the condensed liquid on the upper side of the annular plate is brought to the top of the recovery box, and then the guide rod is inserted into the flow guide hole and pushes the blocking ball downward, so that the blocking ball is separated from the flow guide hole, and then the condensed liquid on the upper side of the annular plate can flow naturally to the lower side of the annular plate through the flow guide hole, avoiding the problem that the condensed liquid on the upper side of the annular plate cannot be collected.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The carbon fiber pyrolysis system disclosed in the present application, by arranging a recovery box and a plurality of recovery pipes, when the carbon fiber plastic in the pyrolysis box is heated, the pyrolysis gas generated is guided out and collected through the gas outlet pipe at the top, in this process, if the pyrolysis gas condenses in the gas outlet pipe in advance, the condensed liquid will naturally fall along the inner side wall of the gas outlet pipe and automatically flow into the recovery box through the inclined recovery pipe, and finally be guided out and collected through the liquid outlet pipe, this operation can reduce the problem of backflow of the condensed liquid into the pyrolysis box, and improve the recovery efficiency and degree of the pyrolysis gas and the condensed liquid.

[0017] 2. The carbon fiber pyrolysis system disclosed in the present application, by arranging a blocking ring, the blocking ring plays a blocking role for the falling of the condensed liquid, and after being blocked by the blocking ring, the condensed liquid can automatically flow into the recovery pipe through the tapered surface on the upper side of the blocking ring, avoiding the problem that part of the condensed liquid flows over the recovery pipe and flows back to the pyrolysis box, further improving the recovery degree of the condensed liquid. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a perspective view of the application;

[0020] Figure 2 is Figure 1 is a partial enlarged view of A in the figure;

[0021] Figure 3 is a sectional view of the application;

[0022] Figure 4 is Figure 3 is a partial enlarged view of B in the figure;

[0023] Figure 5 is a sectional view of the annular sliding cavity in the application;

[0024] Figure 6 is a partial sectional view of the recovery tank in the application;

[0025] Figure 7 is Figure 6 is a partial enlarged view of C in the figure;

[0026] Figure 8 is a perspective view of the annular plate in the application;

[0027] Figure 9 is Figure 8 is a partial enlarged view of D in the figure;

[0028] In the figure: pyrolysis tank 1, gas outlet pipe 2, recovery tank 3, recovery pipe 4, liquid outlet pipe 5, blocking ring 6, servo motor 7, rotating shaft 8, scraping strip 9, shaft sleeve 10, blade plate 11, elastic metal sheet 12, annular sliding cavity 13, magnetic sliding block 14, annular plate 15, elastic rope 16, pull rope 17, blocking block 18, compression spring 19, back-pushing block 20, flow guide hole 21, plugging ball 22, elastic strip 23, guide rod 24. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application will be further described below with reference to the specific embodiments.

[0030] Embodiment one

[0031] As Figures 1 to 5As shown, the pyrolysis system of carbon fiber provided by the embodiment of the present application comprises a pyrolysis box 1; an air outlet pipe 2 is fixedly connected to the upper side of the pyrolysis box 1 and communicates with the pyrolysis box 1; a recovery box 3 is fixedly connected to the upper side of the pyrolysis box 1; the recovery box 3 is arranged in an annular structure and is sleeved outside the air outlet pipe 2, and there is a gap between the recovery box 3 and the air outlet pipe 2; a group of recovery pipes 4 are uniformly distributed between the recovery box 3 and the air outlet pipe 2, and the recovery pipes 4 communicate the recovery box 3 and the air outlet pipe 2; the recovery pipes 4 are arranged in an inclined state, and the end of the recovery pipes 4 close to the recovery box 3 is lower in height; a liquid outlet pipe 5 is fixedly connected to the bottom of the recovery box 3 and communicates with the recovery box 3; in the prior art, the gas generated during pyrolysis needs to be discharged and collected through the air outlet pipe 2 at the top, but the temperature of the pyrolysis gas will decrease after leaving the pyrolysis box 1, and the pyrolysis gas is prone to condense in advance inside the air outlet pipe 2, and then the condensed liquid naturally falls along the inner side wall of the air outlet pipe 2, and the condensed liquid flows back into the pyrolysis box 1, resulting in low collection efficiency of the pyrolysis gas and the condensed liquid; at this time, the recovery box 3 and the plurality of recovery pipes 4 are arranged in the present application, and when the carbon fiber plastic in the pyrolysis box 1 is heated, the pyrolysis gas generated during the heating is discharged and collected through the air outlet pipe 2 at the top, and in this process, if the pyrolysis gas condenses in advance inside the air outlet pipe 2, the condensed liquid naturally falls along the inner side wall of the air outlet pipe 2 and automatically flows into the recovery box 3 through the inclined recovery pipes 4, and finally is discharged and collected through the liquid outlet pipe 5, which can reduce the problem of backflow of the condensed liquid into the pyrolysis box 1 and improve the recovery efficiency and degree of the pyrolysis gas and the condensed liquid.

[0032] A blocking ring 6 is fixedly connected to the position close to the lower side of the recovery pipe 4 inside the air outlet pipe 2; the upper side of the blocking ring 6 is arranged in a conical surface, and the position close to the recovery pipe 4 on the upper side of the blocking ring 6 is lower in height; the blocking ring 6 plays a blocking role in the falling of the condensed liquid, and after being blocked by the blocking ring 6, the condensed liquid automatically flows into the recovery pipe 4 through the conical surface on the upper side of the blocking ring 6, which avoids the problem that part of the condensed liquid flows back to the pyrolysis box 1 by bypassing the recovery pipe 4 and further improves the recovery degree of the condensed liquid.

[0033] The bottom of the air outlet pipe 2 extends into the pyrolysis box 1; a servo motor 7 is fixedly connected to the inner bottom of the air outlet pipe 2; a rotating shaft 8 is fixedly connected to the output shaft of the servo motor 7; a pair of scraping strips 9 are fixedly connected to the upper end of the rotating shaft 8 through a support and extend above the blocking ring 6, and the scraping strips 9 are in close contact with the inner side wall of the air outlet pipe 2; during the pyrolysis process, the rotating shaft 8 is slowly rotated by the servo motor 7, and then the rotating shaft 8 drives the pair of scraping strips 9 to slowly rotate, so that the scraping strips 9 continuously scrape the surface of the inner side wall of the air outlet pipe 2 above the blocking ring 6, thereby accelerating the falling speed of the condensed liquid and reducing the residual condensed liquid on the surface of the inner side wall of the air outlet pipe 2, and further improving the recovery efficiency of the condensed liquid.

[0034] The outer side of the bottom of the rotating shaft 8 is fixedly connected with a shaft sleeve 10; one pair of leaf plates 11 is fixedly connected outside the shaft sleeve 10; a group of elastic metal sheets 12 are uniformly distributed on the inner side wall surface of the bottom of the air outlet pipe 2; the leaf plates 11 can contact the elastic metal sheets 12 in the rotating process of the rotating shaft 8; the rotating shaft 8 rotates at the same time, and the leaf plates 11 are driven to rotate through the shaft sleeve 10; when the leaf plates 11 rotate to the position of the elastic metal sheets 12, the elastic metal sheets 12 are extruded and elastically deformed; with the continuous rotation of the leaf plates 11, after the leaf plates 11 pass the elastic metal sheets 12, the elastic metal sheets 12 are quickly swung and rebounded to the original position under the action of their own elastic force, and the air outlet pipe 2 is vibrated, which further accelerates the falling speed of the condensed liquid on the inner side wall surface of the air outlet pipe 2 in combination with the scraping effect of the scraping strip 9.

[0035] The outer side of the bottom of the air outlet pipe 2 is fixedly connected with an annular sliding cavity 13; one pair of magnetic sliding blocks 14 is slidingly connected inside the annular sliding cavity 13; the leaf plates 11 are made of magnetic material, and the leaf plates 11 can generate an attractive force to the magnetic sliding blocks 14 when the leaf plates 11 are close to the magnetic sliding blocks 14; an annular plate 15 is slidingly connected inside the recycling box 3; the upper side of the annular plate 15 and the inner top wall of the recycling box 3 are fixedly connected with an elastic rope 16; the lower side of the annular plate 15 and the magnetic sliding blocks 14 are fixedly connected with a pull rope 17, and the pull rope 17 penetrates through the pyrolysis box 1 and the annular sliding cavity 13 and is slidingly connected therewith; when the leaf plates 11 rotate to the position of the magnetic sliding blocks 14, the leaf plates 11 can generate an attractive force to the magnetic sliding blocks 14, and then the magnetic sliding blocks 14 rotate together with the leaf plates 11 inside the annular sliding cavity 13; the magnetic sliding blocks 14 drive the annular plate 15 to move downward synchronously through the pull rope 17, so that the annular plate 15 extrudes the condensed liquid at the bottom of the recycling box 3 and extrudes it through the liquid outlet pipe 5, improves the extrusion efficiency of the condensed liquid, and the annular plate 15 can scrape off the condensed liquid on the inner side wall surface of the recycling box 3 when moving downward, further improving the collection efficiency of the condensed liquid; when the annular plate 15 moves to the bottom of the recycling box 3, the magnetic sliding blocks 14 cannot slide any more, and then the leaf plates 11 are separated from the magnetic sliding blocks 14, the attractive force of the leaf plates 11 to the magnetic sliding blocks 14 is reduced, and the annular plate 15 is automatically reset upward under the tension of the elastic rope 16, so as to complete the reciprocating motion of the annular plate 15 inside the recycling box 3.

[0036] The annular slide cavity 13 is fixed with a pair of stoppers 18; the side close to the magnetic slider 14 of the stopper 18 is fixed with a compression spring 19; the side away from the stopper 18 of the compression spring 19 is fixed with a back pushing block 20, and the back pushing block 20 is made of flexible material; when the annular plate 15 moves to the bottom of the recovery tank 3, at this time the magnetic slider 14 just moves to the stopper 18 and compresses the compression spring 19 to store energy, when the subsequent blade plate 11 is separated from the magnetic slider 14, the annular plate 15 is automatically reset upward under the pulling force of the elastic rope 16, the annular plate 15 resets the magnetic slider 14 by pulling the magnetic slider 14 through the pulling rope 17, and at this time the compressed compression spring 19 can generate a counter thrust on the magnetic slider 14 through the back pushing block 20, so as to accelerate the sliding reset of the magnetic slider 14 in the annular slide cavity 13, thereby improving the reset efficiency of the magnetic slider 14.

[0037] Example two

[0038] As Figures 6 to 9 shown, comparative example one, wherein another embodiment of the application is: the surface of the annular plate 15 is uniformly distributed with a group of flow guide holes 21, and the flow guide holes 21 penetrate the annular plate 15; because the recovery pipe 4 is located above the annular plate 15 after the annular plate 15 moves downward, at this time the condensed liquid flowing down through the recovery pipe 4 will be collected on the upper side of the annular plate 15, which causes the condensed liquid at this position to be unable to be discharged through the liquid outlet pipe 5, so the flow guide holes 21 are arranged to make the condensed liquid flow to the lower side of the annular plate 15 through the flow guide holes 21, and then when the annular plate 15 moves downward next time, the condensed liquid can be squeezed out through the liquid outlet pipe 5, further improving the recovery degree of the condensed liquid, and avoiding the problem that the condensed liquid on the upper side of the annular plate 15 cannot be collected.

[0039] The lower side of the flow guide hole 21 is provided with a blocking ball 22, and the diameter of the blocking ball 22 is greater than that of the flow guide hole 21; a group of elastic strips 23 are fixed between the upper side of the blocking ball 22 and the side wall of the flow guide hole 21, and the elastic strips 23 are in a tension state; a group of guide rods 24 are uniformly distributed on the inner wall surface of the top of the recovery tank 3; the guide rods 24 correspond to the flow guide holes 21 one by one and are aligned with each other, and the diameter of the guide rod 24 is smaller than that of the flow guide hole 21; in the process of moving the annular plate 15 downward, the elastic strips 23 pull the blocking ball 22 tightly and make it fit on the lower side of the flow guide hole 21, so that the blocking ball 22 seals the flow guide hole 21, avoiding the problem that when the annular plate 15 moves to the bottom of the recovery tank 3, the liquid pressure at the bottom is large, causing the condensed liquid to overflow upward through the flow guide hole 21, so that the condensed liquid is fully squeezed out through the liquid outlet pipe 5, improving the efficiency of guiding the condensed liquid out; at this time, the condensed liquid flowing from the recovery pipe 4 collects on the upper side of the annular plate 15, and when the annular plate 15 moves upward, it carries the condensed liquid on its upper side to the top of the recovery tank 3, and then the guide rod 24 is inserted into the inside of the flow guide hole 21 and pushes the blocking ball 22 downward, so that the blocking ball 22 is separated from the flow guide hole 21, then the condensed liquid on the upper side of the annular plate 15 can flow naturally to the lower side of the annular plate 15 through the flow guide hole 21, avoiding the problem that the condensed liquid on the upper side of the annular plate 15 cannot be collected.

[0040] Working principle: the application is characterized in that: the recycling tank 3 and the plurality of recycling pipes 4 are arranged, when the carbon fiber plastic in the pyrolysis tank 1 is heated, the pyrolysis gas generated is guided out through the gas outlet pipe 2 at the top and collected, in the process, if the pyrolysis gas condenses in advance in the gas outlet pipe 2, the condensed liquid naturally falls along the inner wall of the gas outlet pipe 2 and automatically flows into the recycling tank 3 through the inclined recycling pipe 4, and finally is guided out and collected through the liquid outlet pipe 5, which can reduce the problem of backflow of the condensed liquid into the pyrolysis tank 1, improve the recycling efficiency and degree of the pyrolysis gas and the condensed liquid; the blocking ring 6 is arranged, so that the blocking ring 6 blocks the falling of the condensed liquid, and after the condensed liquid is blocked by the blocking ring 6, it can automatically flow into the recycling pipe 4 through the conical surface on the upper side of the blocking ring 6, thereby avoiding the problem that part of the condensed liquid flows back to the pyrolysis tank 1, and further improving the recycling degree of the condensed liquid; in the pyrolysis process, the shaft 8 is slowly rotated by the servo motor 7, and then the shaft 8 drives a pair of scraping strips 9 to slowly rotate, so that the scraping strips 9 continuously scrape the surface of the inner wall of the gas outlet pipe 2 above the blocking ring 6, thereby accelerating the falling speed of the condensed liquid and reducing the residual condensed liquid on the surface of the inner wall of the gas outlet pipe 2, thereby further improving the recycling efficiency of the condensed liquid; when the shaft 8 rotates, the vane plate 11 is driven to rotate through the shaft sleeve 10, when the vane plate 11 rotates to the position of the elastic metal sheet 12, the elastic metal sheet 12 is extruded and elastically deformed, and after the vane plate 11 continues to rotate and passes the elastic metal sheet 12, the elastic metal sheet 12 rapidly swings back and rebounds to the original position under the elastic force, and drives the gas outlet pipe 2 to vibrate, which further accelerates the falling speed of the condensed liquid on the surface of the inner wall of the gas outlet pipe 2 in cooperation with the scraping effect of the scraping strips 9; when the vane plate 11 rotates to the position of the magnetic sliding block 14, the magnetic sliding block 14 is attracted, and then the magnetic sliding block 14 rotates together with the vane plate 11 in the annular sliding cavity 13, the magnetic sliding block 14 drives the annular plate 15 to move downward synchronously through the pull rope 17, so that the annular plate 15 extrudes the condensed liquid at the bottom of the recycling tank 3 and extrudes it through the liquid outlet pipe 5, thereby improving the extrusion efficiency of the condensed liquid, and when the annular plate 15 moves to the bottom of the recycling tank 3, the magnetic sliding block 14 cannot slide any more, then the vane plate 11 and the magnetic sliding block 14 are separated, the attraction of the vane plate 11 to the magnetic sliding block 14 is reduced, and the annular plate 15 is automatically reset upward under the tension of the elastic rope 16, thereby completing the reciprocating motion of the annular plate 15 in the recycling tank 3.When the annular plate 15 moves to the bottom of the recovery tank 3, at this time the magnetic slider 14 just moves to the stopper 18 and compresses the compression spring 19 to store energy, and when the subsequent leaf plate 11 is separated from the magnetic slider 14, the annular plate 15 is automatically reset upwards under the pulling force of the elastic rope 16, the annular plate 15 pulls the magnetic slider 14 back to reset through the pulling rope 17, and at this time the compressed compression spring 19 can generate a counter thrust on the magnetic slider 14 through the back pushing block 20, so as to accelerate the sliding reset of the magnetic slider 14 in the annular sliding cavity 13, thereby improving the reset efficiency of the magnetic slider 14;Since the annular plate 15 moves downwards, the recovery pipe 4 is located above the annular plate 15, at this time the condensed liquid flowing through the recovery pipe 4 will be collected on the upper side of the annular plate 15, so that the condensed liquid at this position cannot be discharged through the liquid outlet pipe 5, therefore, the flow guide hole 21 is arranged, so that the condensed liquid can flow to the lower side of the annular plate 15 through the flow guide hole 21, and then when the annular plate 15 moves down next time, the condensed liquid can be squeezed out through the liquid outlet pipe 5, further improving the recovery degree of the condensed liquid, avoiding the problem that the condensed liquid on the upper side of the annular plate 15 cannot be collected;During the movement of the annular plate 15, the elastic strip 23 pulls the sealing ball 22 tightly and makes it adhere to the lower side of the flow guide hole 21, so that the sealing ball 22 seals the flow guide hole 21, avoiding the problem that when the annular plate 15 moves to the bottom of the recovery tank 3, the liquid pressure at the bottom is large, causing the condensed liquid to overflow upwards through the flow guide hole 21, so that the condensed liquid is fully squeezed out through the liquid outlet pipe 5, improving the discharge efficiency of the condensed liquid, at this time the condensed liquid flowing from the recovery pipe 4 is collected on the upper side of the annular plate 15, and when the annular plate 15 moves upwards, the condensed liquid on the upper side of the annular plate 15 is brought to the top of the recovery tank 3, and then the guide rod 24 is inserted into the flow guide hole 21 and pushes the sealing ball 22 downwards, so that the sealing ball 22 is separated from the flow guide hole 21, and then the condensed liquid on the upper side of the annular plate 15 can flow naturally to the lower side of the annular plate 15 through the flow guide hole 21, avoiding the problem that the condensed liquid on the upper side of the annular plate 15 cannot be collected.

[0041] The above-mentioned front, rear, left, right, top and bottom are based on the drawings in the specification Figure 1 As a standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0043] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pyrolysis system for carbon fibers, characterized by: The utility model provides a pyrolysis box (1), the upper side of pyrolysis box (1) is fixedly connected and is communicated with the gas outlet pipe (2), the upper side of pyrolysis box (1) is fixedly connected with the recovery tank (3), the recovery tank (3) is arranged as annular structure and is set in the outside of gas outlet pipe (2), and there is the gap between recovery tank (3) and gas outlet pipe (2), a group of recovery pipes (4) are evenly distributed between recovery tank (3) and gas outlet pipe (2), and recovery pipe (4) communicates recovery tank (3) with gas outlet pipe (2), recovery pipe (4) is arranged as the state of inclination, and the end of recovery pipe (4) near recovery tank (3) is lower in height, the bottom of recovery tank (3) is fixedly connected and is communicated with the liquid outlet pipe (5), The bottom of gas outlet pipe (2) extends to the inside of pyrolysis box (1), the inside of the bottom of gas outlet pipe (2) is fixedly connected with servo motor (7), the output shaft of servo motor (7) is fixedly connected with the rotating shaft (8), the upper end of rotating shaft (8) extends to the above of baffle ring (6) and is fixedly connected with a pair of scraping strips (9) through support, and scraping strip (9) and the inner side wall of gas outlet pipe (2) are mutually attached, The outside of the bottom of rotating shaft (8) is fixedly connected with shaft sleeve (10), the outside of shaft sleeve (10) is fixedly connected with a pair of vane plates (11), the surface of the inner side wall of the bottom of gas outlet pipe (2) is evenly distributed with a group of elastic metal sheets (12), and vane plate (11) can contact elastic metal sheet (12) during the rotation of rotating shaft (8), The outside of the bottom of gas outlet pipe (2) is fixedly connected with annular slide cavity (13), a pair of magnetic sliders (14) are slidably connected in the inside of annular slide cavity (13), vane plate (11) is made of magnetic material, and vane plate (11) can generate attractive force to magnetic slider (14) when being close to magnetic slider (14), annular plate (15) is slidably connected in the inside of recovery tank (3), elastic rope (16) is fixedly connected between the top of recovery tank (3) and the upper side of annular plate (15), pull rope (17) is fixedly connected between the lower side of annular plate (15) and magnetic slider (14), and pull rope (17) penetrates pyrolysis box (1) and annular slide cavity (13) and is slidably connected with them, A pair of stop blocks (18) are fixedly connected in the inside of annular slide cavity (13), compression spring (19) is fixedly connected on the side of stop block (18) close to magnetic slider (14), and return block (20) is fixedly connected on the side of compression spring (19) away from stop block (18), and return block (20) is made of flexible material.

2. The pyrolysis system of carbon fibers according to claim 1, characterized in that: The position close to the lower side of recovery pipe (4) in the inside of gas outlet pipe (2) is fixedly connected with baffle ring (6), the upper side of baffle ring (6) is arranged as the taper surface, and the position close to recovery pipe (4) on the upper side of baffle ring (6) is lower in height.

3. The pyrolysis system of carbon fibers according to claim 1, characterized in that: A group of flow guide holes (21) are evenly distributed on the surface of annular plate (15), and flow guide hole (21) penetrates annular plate (15).

4. A pyrolysis system for carbon fibers as defined in claim 3, characterized in that: The lower side of the flow guide hole (21) is provided with a blocking ball (22), and the diameter of the blocking ball (22) is greater than that of the flow guide hole (21); a group of elastic strips (23) are fixedly connected between the upper side of the blocking ball (22) and the side wall of the flow guide hole (21), and the elastic strips (23) are in a tension state; a group of guide rods (24) are uniformly distributed on the inner wall surface of the top of the recovery box (3); the guide rods (24) correspond to the flow guide holes (21) one by one and are aligned with each other, and the diameter of the guide rod (24) is smaller than that of the flow guide hole (21).

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