CN215598737U - Heat regeneration system for asphalt mixing plant - Google Patents

Abstract

The application relates to a heat regeneration system for an asphalt mixing plant, which comprises a receiving frame, a regeneration drying roller, a primary drying roller and a mixing host, wherein the discharge end of the regeneration drying roller is connected with a feeding pipe; the sampling tube is slidably arranged in the mounting hole in a penetrating way and can rotate along the central line of the mounting hole; the sampling hole is arranged on the outer wall of the sampling pipe positioned in the feeding pipe and communicated with the inside of the sampling pipe. Through rotating the sampling tube and making the thief hole up, then the regeneration raw materials in the pay-off pipe can enter into in the sampling tube, the rethread sampling tube discharges through the thief hole to the realization can reduce the interference to other producers to the sample of regeneration raw materials, so that producers can add new raw materials in the hopper to primary drying roller in succession, and then improve production efficiency.

Description

Heat regeneration system for asphalt mixing plant

Technical Field

The application relates to the field of thermal regeneration equipment, in particular to a thermal regeneration system for an asphalt mixing plant.

Background

The thermal regeneration equipment is used for remixing the old asphalt raw material, the new aggregate and the like into a new mixture according to a certain proportion in a stirrer so as to obtain excellent regenerated asphalt concrete.

The heat regeneration equipment in the related art generally comprises a receiving frame, a regeneration drying roller arranged at the upper end of the receiving frame, a primary drying roller arranged at the middle part of the receiving frame and a stirring host arranged at the lower end of the receiving frame, wherein the discharge end of the regeneration drying roller is connected with a feeding pipe, the discharge port of the feeding pipe is positioned above the hopper of the primary drying roller, and the discharge end of the primary drying roller is connected with the feed end of the stirring host through a feeding pipe.

For the above-mentioned related art, when the inspector wants to detect the humidity or temperature of the regenerated raw material in the regeneration drying drum, the inspector needs to sample the regenerated raw material from the outlet of the feeding pipe. At this time, in order to facilitate the sampling of the regenerated raw material by the inspector, other manufacturers usually need to stop adding new raw material into the hopper of the primary drying drum, and thus, the production efficiency is affected and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve production efficiency, the application provides a thermal regeneration system for asphalt mixing plant.

The application provides a thermal regeneration system for asphalt mixing plant adopts following technical scheme:

a heat regeneration system for an asphalt mixing plant comprises a receiving frame, a regeneration drying roller, a primary drying roller and a mixing host, wherein a material discharging end of the regeneration drying roller is connected with a feeding pipe, the primary drying roller is connected with the mixing host through a material feeding pipe, and the heat regeneration system also comprises a mounting hole which is arranged on the outer wall of the feeding pipe and is communicated with the interior of the feeding pipe; the sampling tube is slidably arranged in the mounting hole in a penetrating way and can rotate along the central line of the mounting hole; the sampling hole is formed in the outer wall of the sampling pipe, which is positioned in the feeding pipe, and is communicated with the inside of the sampling pipe; the limiting gear is fixedly sleeved at one end of the sampling tube positioned outside the feeding tube; and the limiting gear ring is fixed on the outer wall of the feeding pipe and is used for meshing the limiting gear.

Through adopting above-mentioned technical scheme, when needs are sampled regeneration raw materials, the pulling sampling tube motion to make limit gear and spacing ring gear separation, then rotate the sampling tube and make the thief hole up. Then, the regenerated raw materials in the feeding pipe can enter the sampling pipe through the sampling hole and then are discharged through the sampling pipe, so that the sampling operation of the regenerated raw materials is realized. This design can make things convenient for the fast sampling of measurement personnel to the regeneration raw materials, can also realize the online sampling operation to the regeneration raw materials. Therefore, when the detection personnel carry out the sample operation, the detection personnel interfere with other producers in a complementary manner, so that the interference to other producers is reduced, and then the producers can continuously add new raw materials into the hopper of the primary drying roller, and the production efficiency is improved.

Through the cooperation of stop gear and spacing ring gear, when stop gear and spacing ring gear meshing and the thief hole when up, the position of sampling pipe along its circumference direction can be realized to this design and is injectd to make the thief hole can keep stable state up, and then make entering into in the sampling pipe that the regeneration raw materials can be stable, thereby improve sample stability. Simultaneously, when the thief hole when down, this design makes the thief hole can remain stable state down, effectively reduces the risk that the regeneration raw materials enters into the sampling tube through the thief hole to reduce the risk that the regeneration raw materials leaked, and then improve the stability in use.

Optionally, the device further comprises a pointer, wherein the pointer is fixed on the surface of one side, away from the feeding pipe, of the limiting toothed ring; the closed indicating groove is formed in the outer wall of the sampling tube, which is positioned outside the feeding tube; the sampling indicating groove is formed in the outer wall, located outside the feeding pipe, of the sampling pipe; wherein, when the pointer aligns the sample indication groove, the thief hatch faces upwards, when the pointer aligns the closed indication groove, the thief hatch faces downwards.

Through adopting above-mentioned technical scheme, through the cooperation of pointer, sample indication groove and closed indication groove, provide good indicating effect for the measurement personnel to make the measurement personnel can confirm the position of thief hole fast, can improve the operation convenience, can improve the work efficiency of sample operation again.

Optionally, the sampling device further comprises a handle fixed to one end of the sampling tube located outside the feeding tube.

Through adopting above-mentioned technical scheme, through setting up the handle, the detection personnel of being convenient for rotate the sampling tube fast to further improve the work efficiency of sample operation.

Optionally, the device further comprises a mounting shaft, wherein the mounting shaft is horizontally and rotatably connected to the inner wall of the feeding pipe, and one end of the mounting shaft extends to the outside of the feeding pipe; and the baffle is fixed on the side wall of the mounting shaft and can seal the feeding pipe.

Through adopting above-mentioned technical scheme, drive the baffle through the installation axle and rotate, when the baffle horizontality, the baffle can carry out the shutoff to the port of conveying pipe to realize blockking of the regeneration raw materials in the conveying pipe. This design makes testing personnel discover when the reclaimed materials is unqualified, and testing personnel can carry out the shutoff with the port of conveying pipe fast to reduce the risk that unqualified reclaimed materials enters into the hopper of primary drying drum, and then guarantee asphalt concrete's production quality as far as possible.

Optionally, the device further comprises a transmission gear which is fixedly sleeved at one end of the mounting shaft, which is located outside the feeding pipe, and can be meshed with the limiting gear; the limiting gear ring is positioned between the transmission gear and the feeding pipe, and when the limiting gear is meshed with the limiting gear ring, the limiting gear is meshed with the transmission gear.

Through adopting above-mentioned technical scheme, when needs carry out the sample operation, the pulling sampling tube motion to make limit gear and spacing ring gear and drive gear separation, then rotate the sampling tube and make the thief hole up. Then, the sampling tube is pushed to move reversely, and the limit gear is meshed with the transmission gear. At this moment, in case when the testing personnel finds that the regeneration raw materials is unqualified, the testing personnel can rotate the sampling tube fast and drive limit gear and rotate, then limit gear can drive gear and drive installation axle and baffle rotation to make the baffle seal the port of conveying pipe fast, meanwhile, the thief hole is towards side, in order to avoid the regeneration raw materials to leak from the sampling tube. The design can realize timely sealing of the port of the feeding pipe, can also improve the operation convenience, and can also realize the multi-purpose and full utilization of the sampling pipe, thereby improving the practicability.

After the sampling operation is finished, the sampling tube is pulled to move, the limiting gear is separated from the limiting gear ring and the transmission gear, and then the sampling tube is rotated, so that the sampling hole faces downwards. Then, the sampling tube is pushed to move reversely, and the limiting gear is meshed with the limiting gear ring, so that the position limitation of the limiting gear is realized. Meanwhile, the transmission gear is meshed with the limiting gear, so that the position limitation of the mounting shaft and the baffle is realized. When this design can avoid regeneration raw materials to fall as far as possible, the baffle takes place to rotate and causes the interference to the whereabouts of regeneration raw materials to improve the blanking smoothness degree of regeneration raw materials, and then improve production efficiency.

Optionally, the device further comprises a discharge pipe fixed on the outer wall of the feeding pipe and communicated with the feeding pipe, and a feed port of the discharge pipe is located above the mounting shaft; and the electromagnetic valve is arranged on the discharge pipe and controls the opening and closing of a discharge port of the discharge pipe.

Through adopting above-mentioned technical scheme, through setting up the delivery pipe, after the port shutoff of baffle with the conveying pipe, unqualified regeneration raw materials in the conveying pipe can discharge through the delivery pipe fast, can avoid unqualified regeneration raw materials to pile up in the conveying pipe, can realize the directional collection of unqualified regeneration raw materials again to the subsequent operation of the producer of being convenient for.

Optionally, the device further comprises a supporting block fixed on the inner wall of the feeding pipe and located above the mounting shaft; the button switch is fixedly embedded at the lower end of the supporting block and is electrically connected with the electromagnetic valve, and the button switch is used for controlling the electromagnetic valve to be opened and closed; when the baffle plate closes the feeding pipe, the baffle plate can be abutted against the lower end of the supporting block and can touch the button switch to open the electromagnetic valve.

Through adopting above-mentioned technical scheme, drive the baffle when the installation axle and rotate to when making the baffle seal the port of conveying pipe, the baffle is with the lower terminal surface butt of supporting shoe, and meanwhile, the baffle touches button switch and makes the solenoid valve automatic opening. This design can realize the quick control that the solenoid valve opened and close, can improve the operation convenience, can make the row's of delivery pipe arrange the material port again and can in time open to make unqualified regeneration raw materials can discharge fast. The baffle is blocked by the supporting block, the limitation of the maximum rotation stroke of the baffle is realized, so that a good prompt effect is realized for production personnel, the rapid determination of the position of the baffle by the production personnel can be facilitated, the rapid sealing of the port of the feeding pipe can be realized, and the practicability is improved.

Optionally, the feeding device further comprises an indication arrow, which is arranged at one end of the mounting shaft, which is located outside the feeding pipe; after the installation shaft rotates towards the direction indicated by the indication arrow, the baffle can touch the button switch.

Through adopting above-mentioned technical scheme, instruct the arrow point through setting up, have good indicating effect to measurement personnel to make measurement personnel can confirm the rotation direction of sampling tube and installation axle fast, and then make things convenient for measurement personnel to the quick closure of the port of conveying pipe, further improve the operation convenience.

In summary, the present application includes at least one of the following beneficial technical effects:

the sampling pipe is rotated to enable the sampling hole to face upwards, then the regenerated raw materials in the feeding pipe can enter the sampling pipe through the sampling hole and then are discharged through the sampling pipe, so that the regenerated raw materials can be sampled, the design can reduce the interference to other production personnel, and therefore the production personnel can continuously add new raw materials into the hopper of the primary drying roller, and further the production efficiency is improved;

through the matching of the pointer, the sampling indication groove and the closed indication groove, a good indication effect is provided for detection personnel, so that the detection personnel can quickly confirm the position of the sampling hole, the operation convenience can be improved, and the working efficiency of sampling operation can be improved;

through setting up the delivery pipe, after the port shutoff of baffle with the conveying pipe, unqualified regeneration raw materials in the conveying pipe can be discharged through the delivery pipe fast, can avoid unqualified regeneration raw materials to pile up in the conveying pipe, can realize the directional collection of unqualified regeneration raw materials again to the subsequent operation of the producer of being convenient for.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Figure 2 is a schematic structural diagram of a feeding tube in an embodiment of the present application.

Figure 3 is a partial cross-sectional view of a feed tube in an embodiment of the present application.

FIG. 4 is a schematic view of the internal structure of the feeding tube in the example of the present application.

Description of reference numerals: 1. a receiving frame; 2. regenerating a drying drum; 3. a primary drying drum; 4. a stirring main machine; 5. a feed pipe; 6. a feed pipe; 7. mounting holes; 8. a sampling tube; 9. a sampling hole; 10. a handle; 11. a limit gear; 12. a limit toothed ring; 13. a pointer; 14. closing the indicating groove; 15. a sampling indication groove; 16. a baffle plate; 17. installing a shaft; 18. a support block; 19. an arrow is indicated; 20. a transmission gear; 21. a discharge pipe; 22. an electromagnetic valve; 23. a push button switch.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses thermal regeneration system for asphalt mixing plant. Referring to fig. 1, the thermal regeneration system for the asphalt mixing plant comprises a receiving frame 1, wherein a regeneration drying roller 2, a primary drying roller 3 and a mixing host machine 4 are fixedly connected to the side wall of the receiving frame 1 from top to bottom in sequence. The discharge end of the regeneration drying drum 2 is connected with a feeding pipe 5, and a discharge port of the feeding pipe 5 is positioned above the hopper of the primary drying drum 3, so that the regeneration raw material discharged from the regeneration drying drum 2 can enter the hopper of the primary drying drum 3 through the feeding pipe 5. Simultaneously, the discharge end of primary drying cylinder 3 passes through inlet pipe 6 with the feed end of stirring host computer 4 to be connected to make the compounding in primary drying cylinder 3 can enter into in the stirring host computer 4 through inlet pipe 6.

When the asphalt concrete needs to be produced, the regeneration raw material is put into the regeneration drying roller 2, then the regeneration drying roller 2 heats and dries the regeneration raw material, and then the regeneration raw material enters the hopper of the primary drying roller 3 through the feeding pipe 6. Meanwhile, the production personnel put new raw materials into the hopper of the primary drying roller 3, and then the mixed materials enter the primary drying roller 3. Immediately afterwards, the raw drying drum 3 heats the compounding and dries, and then the compounding enters into stirring host computer 4 through inlet pipe 6. And then, injecting the asphalt liquid into the stirring host machine 4, and then mixing the asphalt liquid and the mixed material by the stirring host machine 4, thereby realizing the production and processing of the asphalt concrete.

Referring to fig. 2 and 3, the outer wall of the feeding pipe 5 is penetrated with a mounting hole 7 communicated with the inside of the feeding pipe, a sampling pipe 8 is penetrated in the mounting hole 7, and the outer wall of the sampling pipe 8 positioned in the feeding pipe 5 is penetrated with a sampling hole 9. When the sampling tube 8 rotates and makes the thief hole 9 up, the regeneration raw materials in the conveying pipe 5 can enter into the sampling tube 8 through the thief hole 9, and then discharge through the sampling tube 8 to realize the sampling operation to the regeneration raw materials. Meanwhile, one end of the sampling tube 8, which is positioned outside the feeding tube 5, is fixedly connected with a handle 10, so that a detection person can rotate the sampling tube 8 quickly.

Referring to fig. 2 and 3, the sampling tube 8 can slide along the direction of the central line of the mounting hole 7, a limit gear 11 is fixedly sleeved at one end of the sampling tube 8 positioned outside the feeding tube 5, and a limit gear ring 12 for meshing the limit gear 11 is fixedly connected to the outer wall of the feeding tube 5. When the limit gear 11 is engaged with the limit gear ring 12, the position of the sampling tube 8 in the circumferential direction thereof can be defined, so that the sampling hole 9 can be maintained in a stable upward or downward state.

Referring to fig. 2 and 3, the fixed surface that spacing ring gear 12 deviates from conveying pipe 5 one side is connected with pointer 13, and sampling pipe 8 is located the outside outer wall of conveying pipe 5 and has seted up sealed instruction groove 14 and sample instruction groove 15 to sealed instruction groove 14 and sample instruction groove 15 distribute in the both sides of sampling pipe 8. Meanwhile, when the pointer 13 is aligned with the sampling indication groove 15, the sampling hole 9 faces upwards, and when the pointer 13 is aligned with the closed indication groove 14, the sampling hole 9 faces downwards, so that a good prompting effect is provided for detection personnel.

Referring to fig. 3 and 4, a baffle 16 is arranged inside the feeding pipe 5, an installation shaft 17 is horizontally and rotatably connected to the inner wall of the feeding pipe 5, and the installation shaft 17 penetrates through the middle position of the baffle 16 and is fixedly connected with the baffle 16. Meanwhile, when the mounting shaft 17 drives the baffle 16 to rotate and the baffle 16 is in a horizontal state, the baffle 16 can seal the port of the feeding pipe 5, so that the regenerated raw materials in the feeding pipe 5 are blocked.

Referring to fig. 3 and 4, a supporting block 18 is fixedly connected to the inner wall of the feeding pipe 5, and the supporting block 18 is located above the mounting shaft 17, and when the baffle 16 is in a horizontal state, the baffle 16 can abut against the lower end surface of the supporting block 18, so as to limit the rotation stroke of the baffle 16.

Referring to fig. 2 and 4, an indication arrow 19 is integrally formed at one end of the mounting shaft 17 located outside the feeding pipe 5, and after the inspector drives the mounting shaft 17 to rotate in the direction indicated by the indication arrow 19, the baffle 16 can abut against the lower end surface of the supporting block 18, so as to prompt the inspector.

Referring to fig. 3 and 4, one end of the mounting shaft 17 extends to the outside of the feeding pipe 5 and forms a rotating fit with the feeding pipe 5 through a sealing bearing, a transmission gear 20 is fixedly sleeved at one end of the mounting shaft 17 located outside the feeding pipe 5, and the limit toothed ring 12 is located between the transmission gear 20 and the feeding pipe 5. Meanwhile, when the limit gear 11 moves towards the feeding pipe 5, the limit gear 11 can be meshed with the transmission gear 20, and when the limit gear 11 continues to move towards the feeding pipe 5 and the limit gear 11 is meshed with the limit toothed ring 12, the limit gear 11 and the transmission gear 20 can be kept in a meshed state.

When a sampling operation is required, the sampling tube 8 is pulled to drive the limiting gear 11 to move towards the direction away from the feeding tube 5, the limiting gear 11 is separated from the limiting toothed ring 12 and the transmission gear 20, then the handle 10 is rotated to drive the sampling tube 8 to rotate, and when the pointer 13 is aligned with the sampling indication groove 15, the sampling hole 9 faces upwards. Then, the sampling tube 8 is pushed to drive the limit gear 11 to move reversely, so that the limit gear 11 is meshed with the transmission gear 20, and the limit gear 11 is ensured to be separated from the limit gear ring 12.

At this moment, in case when the inspection personnel finds that the regeneration raw materials is unqualified, the inspection personnel can rotate handle 10 and drive sampling tube 8 and limit gear 11 and rotate, then limit gear 11 can drive gear 20 and drive installation axle 17 and baffle 16 and rotate, and when baffle 16 and the lower terminal surface butt of supporting shoe 18, baffle 16 can seal the port of conveying pipe 5 to the realization is to the separation of unqualified regeneration raw materials. Subsequently, the sampling tube 8 is pushed to move continuously, the limit gear 11 is meshed with the limit gear ring 12, and meanwhile, the limit gear 11 is meshed with the transmission gear 20, so that the position of the mounting shaft 17 and the baffle 16 is limited, and the baffle 16 can stably close the port of the feeding tube 5.

After the sampling operation is completed, the sampling tube 8 is pulled to drive the limit gear 11 to move towards the direction far away from the feeding tube 5, the limit gear 11 is separated from the limit toothed ring 12 and the transmission gear 20, then the handle 10 is rotated to drive the sampling tube 8 to rotate, and when the pointer 13 is aligned with the closed indicating groove 14, the sampling hole 9 faces downwards. Subsequently, the sampling tube 8 is pushed to move reversely, and the limit gear 11 is engaged with the limit gear ring 12, and at the same time, the limit gear 11 is engaged with the transmission gear 20, so that the position limitation of the mounting shaft 17 and the baffle 16 is realized.

Referring to fig. 3 and 4, the outer wall of the feed pipe 5 is integrally formed with a discharge pipe 21, and the discharge pipe 21 communicates with the feed pipe 5 while a feed port of the discharge pipe 21 is located above the mounting shaft 17 to allow the unqualified regeneration raw materials blocked by the baffle 16 to be rapidly discharged through the discharge pipe 21. Meanwhile, an electromagnetic valve 22 is disposed on the discharge pipe 21 to control the opening and closing of the port of the discharge pipe 21.

Referring to fig. 3 and 4, a button switch 23 is fixedly embedded in the lower end surface of the supporting block 18, and the button switch 23 is electrically connected to the solenoid valve 22 and can control the solenoid valve 22 to open and close. Meanwhile, when the baffle 16 is turned to the horizontal state and abuts against the lower end surface of the supporting block 18, the baffle 16 can touch the button switch 23 and open the solenoid valve 22, so that the port of the discharge pipe 21 can be opened in time, so that unqualified regeneration raw materials can be rapidly discharged through the discharge pipe 21.

The implementation principle of a thermal regeneration system for an asphalt mixing plant in the embodiment of the application is as follows: when sampling operation is required, the sampling tube 8 is pulled to drive the limiting gear 11 to move towards the direction far away from the feeding tube 5, and the limiting gear 11 is separated from the limiting gear ring 12 and the transmission gear 20. Then, turning the handle 10 rotates the sampling tube 8, when the pointer 13 is aligned with the sampling indication slot 15, the sampling hole 9 is upward, and then, the sampling tube 8 is pushed to drive the limit gear 11 to move reversely. Subsequently, the regeneration raw materials in the conveying pipe 5 can enter the sampling pipe 8 through the sampling hole 9, and then are discharged through the sampling pipe 8, so that the rapid sampling operation of the regeneration raw materials is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an asphalt mixing plant uses heat regeneration system, is including accepting frame (1), regeneration drying cylinder (2), primary drying cylinder (3) and stirring host computer (4), the discharge end of regeneration drying cylinder (2) is connected with conveying pipe (5), primary drying cylinder (3) with stirring host computer (4) are connected its characterized in that through inlet pipe (6): also comprises the following steps of (1) preparing,

the mounting hole (7) is formed in the outer wall of the feeding pipe (5) and communicated with the interior of the feeding pipe (5);

the sampling tube (8) is slidably arranged in the mounting hole (7) in a penetrating way and can rotate along the central line of the mounting hole (7);

the sampling hole (9) is formed in the outer wall of the sampling tube (8) positioned in the feeding tube (5) and communicated with the sampling tube (8);

the limiting gear (11) is fixedly sleeved at one end of the sampling tube (8) positioned outside the feeding tube (5);

and the limiting gear ring (12) is fixed on the outer wall of the feeding pipe (5) and is used for meshing the limiting gear (11).

2. The thermal regeneration system for asphalt mixing plant according to claim 1, characterized in that: also comprises the following steps of (1) preparing,

the pointer (13) is fixed on the surface of one side, away from the feeding pipe (5), of the limiting gear ring (12);

the closed indicating groove (14) is formed in the outer wall, located outside the feeding pipe (5), of the sampling pipe (8);

the sampling indicating groove (15) is formed in the outer wall, located outside the feeding pipe (5), of the sampling pipe (8);

wherein, when the pointer (13) is aligned with the sampling indication groove (15), the sampling hole (9) faces upwards, and when the pointer (13) is aligned with the closed indication groove (14), the sampling hole (9) faces downwards.

3. The thermal regeneration system for asphalt mixing plant according to claim 1, characterized in that: also comprises the following steps of (1) preparing,

and the handle (10) is fixed at one end of the sampling tube (8) positioned outside the feeding tube (5).

4. The thermal regeneration system for asphalt mixing plant according to claim 1, characterized in that: also comprises the following steps of (1) preparing,

the mounting shaft (17) is horizontally and rotatably connected to the inner wall of the feeding pipe (5), and one end of the mounting shaft extends to the outside of the feeding pipe (5);

and a baffle (16) which is fixed on the side wall of the mounting shaft (17) and can seal the feeding pipe (5).

5. The thermal regeneration system for asphalt mixing plant according to claim 4, characterized in that: also comprises the following steps of (1) preparing,

the transmission gear (20) is fixedly sleeved at one end, positioned outside the feeding pipe (5), of the mounting shaft (17) and can be meshed with the limiting gear (11);

the limiting gear ring (12) is located between the transmission gear (20) and the feeding pipe (5), and when the limiting gear (11) is meshed with the limiting gear ring (12), the limiting gear (11) is meshed with the transmission gear (20).

6. The thermal regeneration system for asphalt mixing plant according to claim 4, characterized in that: also comprises the following steps of (1) preparing,

the discharge pipe (21) is fixed on the outer wall of the feeding pipe (5) and is communicated with the feeding pipe (5), and a feeding port of the discharge pipe (21) is positioned above the mounting shaft (17);

and the electromagnetic valve (22) is arranged on the discharge pipe (21) and controls the opening and closing of a discharge port of the discharge pipe (21).

7. The thermal regeneration system for asphalt mixing plant according to claim 6, characterized in that: also comprises the following steps of (1) preparing,

the supporting block (18) is fixed on the inner wall of the feeding pipe (5) and is positioned above the mounting shaft (17);

the button switch (23) is fixedly embedded at the lower end of the supporting block (18) and is electrically connected with the electromagnetic valve (22), and the button switch (23) is used for controlling the electromagnetic valve (22) to be opened and closed;

when the baffle (16) closes the feeding pipe (5), the baffle (16) can be abutted against the lower end of the supporting block (18) and can touch the button switch (23) to open the electromagnetic valve (22).

8. The thermal regeneration system for asphalt mixing plant according to claim 7, characterized in that: also comprises the following steps of (1) preparing,

an indication arrow (19) arranged at one end of the mounting shaft (17) positioned outside the feeding pipe (5);

wherein, after the mounting shaft (17) rotates towards the direction indicated by the indication arrow (19), the baffle (16) can touch the button switch (23).

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