An asphalt concrete production equipment based on warm mix technology and its production method

Abstract

The present invention discloses an asphalt concrete production device based on warm mixing technology and its production method, belonging to the technical field of asphalt production. It includes a base, on the top of which a screening box is fixedly installed, and on the bottom of which a mixing box is fixedly installed. The mixing box is communicated with an asphalt material tank through a pipeline. On the top of the screening box, a vibrating screen mechanism for filler screening is fixedly installed. In the present invention, under the vibration of the inclined screen, the mineral materials fed from one side of the feeding mechanism can roll on the inclined surface at the top of the inclined screen. The rolling mineral materials can stay at the top of different inclined screen mesh hole diameters according to their own particle sizes. The inclined surface of the inclined screen stays on one side of the corresponding material valve waiting for discharging. When the materials are fully screened, the materials with corresponding particle sizes can be selected for feeding as needed. By using the inclined screen, the screening difficulty of the mineral material screening mechanism is reduced, which is beneficial to reducing the occupied axial space of screening and improving the production adaptability.

Description

Technical Field

[0001] The present invention belongs to the technical field of asphalt production, and particularly relates to an asphalt concrete production device based on warm mix technology and a production method thereof. Background Art

[0002] Asphalt concrete is a mixture prepared by mixing mineral materials with a certain gradation composition, such as crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., with a certain proportion of road asphalt materials under strictly controlled conditions. The processing conditions of asphalt concrete include warm mix, normal temperature mixing, and hot mix asphalt. The warm mix asphalt concrete technology simply refers to the asphalt mixture mixing technology between hot mix asphalt mixture and normal temperature mixing mixture. Under the same raw material conditions, the warm mix temperature and compaction temperature are generally 20 - 40 °C lower than those of hot mix. The core of the warm mix technology is to use physical or chemical means to improve the workability of asphalt mixture during construction.

[0003] Chinese Patent Publication No. CN113584996B discloses a variable quantity asphalt concrete mixing device. It includes a first aggregate heating cylinder and a second aggregate heating cylinder. A first feeding conveyor is arranged at the feeding end of the first aggregate heating cylinder, and the discharging end of the first feeding conveyor is connected to the feeding end of the first aggregate heating cylinder. A second feeding conveyor is arranged at the feeding end of the second aggregate heating cylinder, and the discharging end of the second feeding conveyor is connected to the feeding end of the second aggregate heating cylinder; an aggregate conveyor is arranged at the feeding ends of the first feeding conveyor and the second feeding conveyor, and a cold aggregate conveying switch is arranged between the discharging end of the aggregate conveyor and the feeding ends of the first feeding conveyor and the second feeding conveyor. The above solution can flexibly adjust the output of the mixing plant according to business requirements. However, in actual use, since asphalt concrete requires asphalt mineral materials with different particle sizes under different technological conditions, traditional asphalt mineral material screening equipment mostly uses gravity screening, which requires a relatively high axial feeding space and there is room for improvement. Summary of the Invention

[0004] The purpose of the present invention is to propose an asphalt concrete production device based on warm mix technology and a production method thereof to solve the problem that traditional asphalt mineral material screening equipment mostly uses gravity screening and requires a relatively high axial feeding space.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An asphalt concrete production device based on warm mix technology, comprising a base. A screening box is fixedly installed at the top of the base. A mixing box is fixedly installed at the bottom of the base, and the mixing box is connected to an asphalt tank through a pipeline. A vibrating screen mechanism for screening fillers is fixedly installed at the top of the screening box. One side of the vibrating screen mechanism is connected to a feeding mechanism, and the feeding mechanism is fixedly installed at the top of the base. The bottom of the feeding mechanism is connected to one side of the top of the mixing box, for feeding the vibrated concrete material into the mixing box. An heat exchange mechanism is connected to the outside of the mixing box, and the heat exchange mechanism is sleeved outside the feeding mechanism at the corresponding position. The top of the heat exchange mechanism is fixedly installed on one side of the top of the base. One side of the screening box is communicated with a feeding mechanism for feeding materials.

[0007] As a further description of the above technical solution:

[0008] The feeding mechanism includes a feeding box, the feeding box is fixedly connected to the top of the base. A plurality of feeding plates are slidably connected to the inner cavity of the feeding box. The top of the feeding plate is fixedly connected with an abutting rod, and the end of the abutting rod is in contact with one side of the vibrating screen mechanism. Both sides of the top of the feeding plate are fixedly connected with sliding sleeves, and a sliding rod is slidably connected in the sliding sleeve. One end of the sliding rod is fixedly connected to one side of the inner cavity of the feeding box. A first spring is sleeved on the outer side wall of the sliding rod, and both ends of the first spring are fixedly connected to the corresponding positions of the sliding rod and one side of the stepped block. One side of the feeding box is communicated with a feeding guide plate, and the feeding guide plate is arranged at an inclined angle.

[0009] As a further description of the above technical solution:

[0010] The top of the feeding plate is an inclined surface, and the inclined surface of the feeding plate inclines towards the screening box. The cross-sectional shape of the feeding guide plate is U-shaped.

[0011] As a further description of the above technical solution:

[0012] The vibrating screen mechanism includes a reciprocating rod. A driving part is arranged at the top of the reciprocating rod. The reciprocating rod is slidably connected to the top of the screening box cover. A plurality of inclined screens are fixedly connected to the outer side wall of the reciprocating rod. The upper surface of the inclined screen is inclined. The two ends of the inclined surface of the inclined screen are respectively arranged on both sides of the feeding and discharging ports of the feeding mechanism and the discharging mechanism, for selecting suitable particle size fillers through vibrating screening after the materials enter.

[0013] As a further description of the above technical solution:

[0014] The driving part of the vibrating sieve mechanism includes a motor, which is fixedly installed on the top of the sieve box cover. The output shaft of the motor is fixedly connected with a polarization wheel. A contact block is attached to the top of the polarization wheel. The contact block is fixedly connected to the top end of a reciprocating rod. A second spring is sleeved on the outer side wall of the reciprocating rod. The two ends of the second spring are respectively fixedly connected to the contact block and the corresponding position on one side of the top of the sieve box cover. A connecting plate is fixedly connected to the top of the contact block, and the connecting plate is fixedly connected to one side of the feeding mechanism.

[0015] As a further description of the above technical solution:

[0016] The bottom end of the reciprocating rod passes through a sealing sleeve embedded in the bottom of the sieve box, and a telescopic rod is fixedly connected. The bottom end of the telescopic rod is fixedly connected with a mounting plate. On both sides of the top of the mounting plate, fixing rods are fixedly connected, and the fixing rods are fixedly connected to both sides of the bottom of the sieve box. A third spring is sleeved on the outer side wall of the telescopic rod. The two ends of the third spring are respectively fixedly connected to the outside of the telescopic rod and the corresponding position on one side of the bottom end of the reciprocating rod.

[0017] As a further description of the above technical solution:

[0018] The feeding mechanism includes a feeding box, which is fixedly connected to one side of the sieve box. The bottom of the feeding box is connected to the top of the mixing box through a pipe body. A lead screw seat is embedded in the top of the feeding box. A driving lead screw is threadedly connected in the inner cavity of the lead screw seat. The top end of the driving lead screw is fixedly connected with a connecting rod, and the top end of the connecting rod is rotatably connected to the bottom of the connecting plate. The bottom end of the driving lead screw is fixedly connected with a feeding auger, and the feeding auger is located in the feeding box. A plurality of material valves are communicated on one side of the sieve box, and the material valves are located on one side of the inclined sieve at the corresponding positions.

[0019] As a further description of the above technical solution:

[0020] The heat exchange mechanism includes a heat exchange jacket kettle, which is connected to the outside of the mixing box. One side of the heat exchange jacket kettle is communicated with a heat conduction jacket through a heat exchange pipe. The heat conduction jacket is sleeved on the outside of the pipe body at the bottom of the feeding box. One side of the heat conduction jacket is communicated with a pump body through a connecting pipe. The pump body is fixedly installed on the top of the base through a mounting plate. The liquid outlet of the pump body is communicated with a return heat pipe, and the return heat pipe is connected to one side of the return liquid port of the heat exchange jacket kettle.

[0021] As a further description of the above technical solution:

[0022] One side of the mixing box is communicated with a finished product conveying valve, and the finished product conveying valve is located at the end of the mixing box.

[0023] As a further description of the above technical solution:

[0024] A production method of an asphalt concrete production device based on warm mixing technology, specifically including the following steps:

[0025] S1. When preparing for asphalt warm mixing production, the asphalt aggregates are sequentially fed into the feeding mechanism at corresponding positions through an external feeding conveyor belt.

[0026] S2. After the asphalt aggregates entering the screening box are fed into the screening box through the feeding mechanism, they fall into the vibrating screen mechanism. At this time, the vibrating screen mechanism works to vibrate and classify the incoming asphalt aggregates.

[0027] S3. The classified asphalt aggregates enter the feeding mechanism through the closing of the material valve. The feeding mechanism mixes the asphalt aggregates of the corresponding screening grades fed by the material valve and then feeds them into the mixing box.

[0028] S4. After the asphalt aggregates enter the mixing box, a pump body on one side of the mixing box extracts asphalt liquid and feeds it into the mixing box. The asphalt and asphalt aggregates in the mixing box are extruded and mixed, and are fully combined under the heating state of the heat exchange mechanism to complete the production of asphalt concrete.

[0029] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0030] 1. In the present invention, when the aggregates are fed into the screening box through the feeding mechanism, the aggregates can enter the top of the inclined screen. At this time, the rotation of the output shaft of the motor can drive the polarization wheel to rotate and drive the top abutting block to move upward. The movement of the abutting block can pull the reciprocating rod to drive the inclined screen to move upward, realizing the reciprocating movement of the inclined screen through the rotation of the motor. Under the vibration of the inclined screen, the aggregates fed from one side of the feeding mechanism can roll on the inclined surface at the top of the inclined screen. The rolling aggregates can stay at the top of different inclined screen mesh hole diameters according to their own particle sizes. The inclined surface of the inclined screen stays on one side of the corresponding material valve waiting for discharging. When the materials are fully screened, the materials of the corresponding particle sizes can be selected for feeding as needed. By the inclined screen, the screening difficulty of the aggregate screening mechanism is reduced, which is beneficial to reducing the occupied screening axial space and improving the production adaptability.

[0031] 2. In the present invention, when the aggregates are fed onto the top of the feeding plate through the feeding box, the reciprocating inclined screen can drive the feeding plate to move through contact with the abutting rod. The movement of the feeding plate can slide through the sliding sleeve outside the sliding rod, and when the feeding plate moves, it can squeeze the first spring through the sliding sleeve. The first spring can use its own elastic force to reduce the impact stress of the feeding plate. The movement of the inclined screen synchronously drives the feeding plate to shake, enabling the aggregates to enter the inclined screen and preventing the aggregates from being blocked in the feeding box.

[0032] 3. In the present invention, after the material valve is opened and closed, the ore materials at the top of the inclined screens of different screening grades can be fed into the feeding box. After the ore materials enter the feeding box, the movement of the abutting block can drive the connecting plate and the connecting rod to move. The movement of the connecting rod can pull the bottom transmission lead screw. When the transmission lead screw moves in the lead screw seat, it can rotate. The rotation of the transmission lead screw can drive the bottom feeding auger to rotate. The feeding auger can fully mix the ore materials fed by the material valve and then feed them into the mixing box through the bottom pipe body. The reciprocating rod is used to realize the rotary mixing of the feeding auger, improving the premixing effect before the ore materials are fed into the mixing box.

[0033] 4. In the present invention, the heated water liquid is fed into the heat conduction jacket through the connecting pipe by the pump body. The heating liquid in the heat conduction jacket can be fed into the heat exchange jacket kettle through the heat exchange pipe. The ore materials during falling are preheated through the heat conduction jacket, avoiding the influence of moisture in the ore materials on the finished product effect. When stirring and mixing in the mixing box, the heated heat exchange liquid in the heat exchange jacket kettle can raise the temperature of the frame in the mixing box, precisely controlling and adjusting the temperature of the ore materials in the mixing box, which is beneficial to warm mixing processing and improving production adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is the overall structural schematic diagram of an asphalt concrete production device based on warm mixing technology proposed by the present invention;

[0035] Figure 2 is the side semi-sectional structural schematic diagram of an asphalt concrete production device based on warm mixing technology proposed by the present invention;

[0036] Figure 3 proposed by the present invention Figure 2 is the enlarged structural schematic diagram of part A;

[0037] Figure 4 is the exploded split structural schematic diagram of an asphalt concrete production device based on warm mixing technology proposed by the present invention;

[0038] Figure 5 is the partial semi-sectional structural schematic diagram of an asphalt concrete production device based on warm mixing technology proposed by the present invention;

[0039] Figure 6 proposed by the present invention Figure 5 is the enlarged structural schematic diagram of part B;

[0040] Figure 7 is the exploded split structural schematic diagram of an asphalt concrete production device based on warm mixing technology proposed by the present invention from another angle;

[0041] Figure 8 proposed by the present invention Figure 7 is the enlarged structural schematic diagram of part C;

[0042] Figure 9 This is a schematic diagram of the feeding plate structure of an asphalt concrete production device based on warm mixing technology proposed by the present invention.

[0043] Legend:

[0044] 1. Base; 2. Feeding mechanism; 201. Feeding box; 202. Feeding plate; 203. Sliding sleeve; 204. Sliding rod; 205. First spring; 206. Feeding guide plate; 207. Contact rod; 3. Screening box; 4. Heat exchange mechanism; 401. Heat exchange jacket kettle; 402. Heat exchange tube; 403. Heat conducting jacket; 404. Connecting pipe; 405. Pump body; 406. Return heat pipe; 5. Feeding mechanism; 501. Feeding box; 502. Feeding auger; 503. Screw rod seat; 504. Driving screw rod; 505. Connecting rod; 6. Vibration screening mechanism; 601. Connecting plate; 602. Reciprocating rod; 603. Second spring; 604. Contact block; 605. Polarization wheel; 606. Motor; 607. Inclined screen; 608. Expansion rod; 609. Mounting plate; 610. Fixed rod; 611. Third spring; 7. Material valve; 8. Mixing box; 9. Finished product conveying valve. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Please refer to Figures 1-9, the present invention provides a technical solution: an asphalt concrete production device based on warm mixing technology, including a base 1, a screening box 3 is fixedly installed on the top of the base 1, a mixing box 8 is fixedly installed on the bottom of the base 1, and the mixing box 8 is communicated with an asphalt tank through a pipeline. A vibrating screen mechanism 6 for screening fillers is fixedly installed on the top of the screening box 3. One side of the vibrating screen mechanism 6 is connected to a feeding mechanism 5, and the feeding mechanism 5 is fixedly installed on the top of the base 1, and the bottom of the feeding mechanism 5 is communicated with one side of the top of the mixing box 8 for feeding the vibrated concrete material into the mixing box 8. A heat exchange mechanism 4 is connected to the outside of the mixing box 8, the heat exchange mechanism 4 is sleeved on the outside of the feeding mechanism 5 at the corresponding position, and the top of the heat exchange mechanism 4 is fixedly installed on one side of the top of the base 1. One side of the screening box 3 is communicated with a feeding mechanism 2 for feeding. The vibrating screen mechanism 6 includes a reciprocating rod 602, a driving part is arranged at the top of the reciprocating rod 602, the reciprocating rod 602 is slidably connected to the top of the cover of the screening box 3, a plurality of inclined screens 607 are fixedly connected to the outer side wall of the reciprocating rod 602, the upper surface of the inclined screen 607 is inclined, and both ends of the inclined surface of the inclined screen 607 are respectively arranged on both sides of the feeding and discharging ports of the feeding mechanism 2 and the feeding mechanism 5 for selecting suitable particle size fillers through vibration screening after the material enters. The driving part of the vibrating screen mechanism 6 includes a motor 606, the motor 606 is fixedly installed on the top of the cover of the screening box 3, the output shaft of the motor 606 is fixedly connected to a polarization wheel 605, a contact block 604 is attached to the top of the polarization wheel 605, the contact block 604 is fixedly connected to the top end of the reciprocating rod 602, a second spring 603 is sleeved on the outer side wall of the reciprocating rod 602, and both ends of the second spring 603 are respectively fixedly connected to the contact block 604 and the corresponding position on one side of the top of the cover of the screening box 3. A connecting plate 601 is fixedly connected to the top of the contact block 604, and the connecting plate 601 is fixedly connected to one side of the feeding mechanism 5.

[0047] The implementation manner is specifically as follows: When the ore material is fed into the screening box 3 through the feeding mechanism 2, the ore material can enter the top of the inclined screen 607. At this time, the rotation of the output shaft of the motor 606 can drive the polarization wheel 605 to rotate. The rotation of the polarization wheel 605 can drive the top abutting block 604 to move upward. The movement of the abutting block 604 can pull the reciprocating rod 602 and the second spring 603 to move. When the reciprocating rod 602 moves upward, it can pull the inclined screen 607 to move upward. And after the polarization wheel 605 continues to rotate and separates from the abutting block 604, the second spring 603 can drive the reciprocating rod 602 to reset by its own pulling force. The reset of the reciprocating rod 602 can drive the inclined screen 607 to move downward. Thus, the reciprocating movement of the inclined screen 607 can be realized by the rotation of the motor 606. Under the vibration action of the inclined screen 607, the ore material fed from one side of the feeding mechanism 2 can roll on the inclined surface at the top of the inclined screen 607. The rolling ore material can stay at the top of the inclined screen 607 with different mesh diameters according to its own particle size, and stay on one side of the material valve 7 at the corresponding position through the inclined surface of the inclined screen 607 waiting for discharging. When the material is fully screened, the material with the corresponding particle size can be selected for feeding as needed. Thus, the screening difficulty of the ore material screening mechanism can be reduced by the inclined screen 607, which is beneficial to reducing the occupied screening axial space and improving the production adaptability.

[0048] Please refer to Figures 2-4 , the feeding mechanism 2 includes a feeding box 201. The feeding box 201 is fixedly connected to the top of the base 1. A plurality of feeding plates 202 are slidably connected to the inner cavity of the feeding box 201. An abutting rod 207 is fixedly connected to the top of the feeding plate 202. Slide sleeves 203 are fixedly connected to both sides of the top of the feeding plate 202. A slide rod 204 is slidably connected in the slide sleeve 203. One end of the slide rod 204 is fixedly connected to one side of the inner cavity of the feeding box 201. A first spring 205 is sleeved on the outer side wall of the slide rod 204. Both ends of the first spring 205 are fixedly connected to the corresponding positions of the slide rod 204 and one side of the stepped block. One side of the feeding box 201 is communicated with a feeding guide plate 206, and the feeding guide plate 206 is arranged at an inclined angle. The top of the feeding plate 202 is an inclined surface, and the inclined surface of the feeding plate 202 is inclined toward the screening box 3. The cross-sectional shape of the feeding guide plate 206 is U-shaped.

[0049] The implementation method is specifically as follows: Through the designed feeding mechanism 2, when the ore is fed into the top of the feeding plate 202 through the feeding box 201, the inclined screen 607 that moves up and down can drive the feeding plate 202 to move through contact with the abutting rod 207. The movement of the feeding plate 202 can slide the sliding sleeve 203 outside the sliding rod 204. The feeding plate 202 is more stable through the sliding rod 204 of the sliding sleeve 203 outside the sliding rod 204, which can avoid the shaking and offset of the feeding plate 202. And when the feeding plate 202 moves, it can squeeze the first spring 205 through the sliding sleeve 203. The first spring 205 can use its own elastic force to reduce the impact stress of the feeding plate 202. Thus, the movement of the inclined screen 607 can synchronously drive the feeding plate 202 to shake so that the ore enters the inclined screen 607, effectively avoiding the ore from being blocked in the feeding box 201. Through the designed feeding guide plate 206, the feeding efficiency during blanking can be improved through the inclined feeding guide plate 206.

[0050] The feeding mechanism 5 includes a feeding box 501. The feeding box 501 is fixedly connected to one side of the screening box 3. The bottom of the feeding box 501 is connected to the top of the mixing box 8 through a pipe body. A lead screw seat 503 is embedded in the top of the feeding box 501. A transmission lead screw 504 is threadedly connected to the inner cavity of the lead screw seat 503. The top of the transmission lead screw 504 is fixedly connected to a connecting rod 505. The top of the connecting rod 505 is rotatably connected to the bottom of the connecting plate 601. The bottom of the transmission lead screw 504 is fixedly connected to a feeding auger 502. The feeding auger 502 is located inside the feeding box 501. A plurality of material valves 7 are communicated with one side of the screening box 3, and the material valves 7 are located on one side of the corresponding inclined screen 607.

[0051] The implementation method is specifically as follows: Through the designed feeding mechanism 5, when the material valve 7 is opened and closed, the ore on the top of the inclined screen 607 with different screening grades can be fed into the feeding box 501. And after the ore enters the feeding box 501, the movement of the abutting block 604 can drive the connecting plate 601 and the connecting rod 505 to move. The movement of the connecting rod 505 can pull the bottom transmission lead screw 504. When the transmission lead screw 504 moves in the lead screw seat 503, it can rotate. The rotation of the transmission lead screw 504 can drive the bottom feeding auger 502 to rotate. The feeding auger 502 can fully mix the ore fed by the material valve 7 and then send it into the mixing box 8 through the bottom pipe body. Thus, the rotation mixing of the feeding auger 502 can be realized through the reciprocating rod 602, improving the premixing effect before the ore is fed into the mixing box 8.

[0052] Please refer to Figures 7-8, The bottom end of the reciprocating rod 602 passes through a sealing sleeve embedded at the bottom of the screening box 3 and is fixedly connected to a telescopic rod 608. The bottom end of the telescopic rod 608 is fixedly connected to a mounting plate 609. On both sides of the top of the mounting plate 609, fixing rods 610 are fixedly connected. The fixing rods 610 are fixedly connected to both sides of the bottom of the screening box 3. A third spring 611 is sleeved on the outer side wall of the telescopic rod 608. Both ends of the third spring 611 are fixedly connected to the corresponding positions outside the telescopic rod 608 and one side of the bottom end of the reciprocating rod 602 respectively.

[0053] The specific implementation method is as follows: Through the designed reciprocating rod 602, when the reciprocating rod 602 reciprocates, the reciprocating rod 602 can squeeze the telescopic rod 608 at the bottom. When the telescopic rod 608 is compressed, it can squeeze the third spring 611 outside. Through the designed telescopic rod 608, it can prevent the reciprocating rod 602 from shaking and shifting during movement. And through the designed third spring 611, it can improve the reset effect of the reciprocating rod 602, improve the stability of the screening movement, and avoid the impact of the ore material falling on the operation stability of the inclined screen 607.

[0054] The heat exchange mechanism 4 includes a heat exchange jacket kettle 401. The heat exchange jacket kettle 401 is connected to the outside of the mixing box 8. One side of the heat exchange jacket kettle 401 is communicated with a heat conduction jacket 403 through a heat exchange pipe 402. The heat conduction jacket 403 is sleeved on the outer body of the bottom pipe of the feeding box 501. One side of the heat conduction jacket 403 is communicated with a pump body 405 through a connecting pipe 404. The pump body 405 is fixedly installed on the top of the base 1 through the mounting plate 609. The liquid outlet of the pump body 405 is communicated with a reflux heat pipe 406. The reflux heat pipe 406 is connected to one side of the reflux liquid port of the heat exchange jacket kettle 401. One side of the mixing box 8 is communicated with a finished product conveying valve 9, and the finished product conveying valve 9 is located at the end of the mixing box 8.

[0055] The specific implementation method is as follows: Through the designed heat exchange mechanism 4, during processing, the heated water liquid can be sent into the heat conduction jacket 403 through the connecting pipe 404 by the pump body 405. The heating liquid in the heat conduction jacket 403 can be sent into the heat exchange jacket kettle 401 through the heat exchange pipe 402. Thus, the ore material falling can be preheated through the heat conduction jacket 403 to avoid the influence of the moisture in the ore material on the finished product effect. And when the mixing box 8 is stirring and mixing, the heated heat exchange liquid in the heat exchange jacket kettle 401 can heat up the frame in the mixing box 8. Thus, the temperature of the ore material in the mixing box 8 can be accurately controlled and adjusted, which is beneficial to carry out warm mixing processing and improve the production adaptability.

[0056] Working principle: During use, when the ore material is fed into the screening box 3 through the feeding mechanism 2, the ore material enters the top of the inclined screen 607. The output shaft of the motor 606 rotates to drive the polarization wheel 605 to rotate. The rotation of the polarization wheel 605 drives the top abutting block 604 to move upward. The movement of the abutting block 604 pulls the reciprocating rod 602 and the second spring 603 to move. When the reciprocating rod 602 moves upward, it pulls the inclined screen 607 to move upward. After the polarization wheel 605 continues to rotate and separates from the abutting block 604, the second spring 603 uses its own pulling force to drive the reciprocating rod 602 to reset. The reset of the reciprocating rod 602 drives the inclined screen 607 to move downward. Through the rotation of the motor 606, the reciprocating movement of the inclined screen 607 is realized. Under the vibration of the inclined screen 607, the ore material fed from one side of the feeding mechanism 2 rolls on the inclined surface at the top of the inclined screen 607. The rolling ore material stays at the top of the mesh diameters of different inclined screens 607 according to its own particle size and waits for discharging on one side of the material valve 7 at the corresponding position through the inclined surface of the inclined screen 607;

[0057] When the ore material is fed to the top of the feeding plate 202 through the feeding box 201, the reciprocatingly moving inclined screen 607 drives the feeding plate 202 to move through contact with the abutting rod 207. The movement of the feeding plate 202 slides through the sliding sleeve 203 outside the sliding rod 204. The feeding plate 202 is more stable through the sliding rod 204 outside the sliding sleeve 203 outside the sliding rod 204, avoiding the shaking and offset of the feeding plate 202. When the feeding plate 202 moves, it squeezes the first spring 205 through the sliding sleeve 203. The first spring 205 uses its own elastic force to reduce the impact stress of the feeding plate 202. Through the movement of the inclined screen 607, the feeding plate 202 is synchronously driven to shake so that the ore material enters the inclined screen 607;

[0058] When the material valve 7 is opened and closed, the ore materials at the top of the inclined screens 607 with different screening grades are fed into the feeding box 501. After the ore material enters the feeding box 501, the abutting block 604 moves to drive the connecting plate 601 and the connecting rod 505 to move. The movement of the connecting rod 505 pulls the bottom transmission lead screw 504. When the transmission lead screw 504 moves in the lead screw seat 503, it rotates. The rotation of the transmission lead screw 504 drives the bottom feeding auger 502 to rotate. The feeding auger 502 fully mixes the ore material fed by the material valve 7 and then sends it into the mixing box 8 through the bottom pipe body. Through the reciprocating rod 602, the rotation and mixing of the feeding auger 502 are realized, improving the premixing effect;

[0059] When the reciprocating rod 602 reciprocates, the reciprocating rod 602 squeezes the bottom telescopic rod 608. When the telescopic rod 608 is compressed, it squeezes the external third spring 611. The heated water liquid is sent into the heat conduction jacket 403 through the connecting pipe 404 by the pump body 405. The heating liquid in the heat conduction jacket 403 is sent into the heat exchange jacket kettle 401 through the heat exchange pipe 402. The heat conduction jacket 403 preheats the falling ore to avoid the influence of moisture in the ore on the finished product effect. When the mixing box 8 stirs and mixes, the heating liquid in the heat exchange jacket kettle 401 heats up the inner frame of the mixing box 8 to precisely control and adjust the temperature of the ore in the mixing box 8. After the mixing is completed, the finished asphalt concrete is sent out through the finished product conveying valve 9 to the mixer truck and the transfer tool.

[0060] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An asphalt concrete production device based on warm mixing technology, comprising a base (1), a screening box (3) is fixedly installed on the top of the base (1), a mixing box (8) is fixedly installed on the bottom of the base (1), and the mixing box (8) is communicated with an asphalt material tank through a pipeline, characterized in that, A vibrating sieve mechanism (6) for filling material screening is fixedly installed at the top of the screening box (3). One side of the vibrating sieve mechanism (6) is connected to a feeding mechanism (5), and the feeding mechanism (5) is fixedly installed at the top of the base (1). The bottom of the feeding mechanism (5) is communicated with one side of the top of the mixing box (8) to send the vibrated concrete material into the mixing box (8). A heat exchange mechanism (4) is connected to the outside of the mixing box (8), and the heat exchange mechanism (4) is sleeved outside the feeding mechanism (5) at the corresponding position. The top of the heat exchange mechanism (4) is fixedly installed on one side of the top of the base (1). One side of the screening box (3) is communicated with a feeding mechanism (2) for feeding. The feeding mechanism (2) includes a feeding box (201). The feeding box (201) is fixedly connected to the top of the base (1). A plurality of feeding plates (202) are slidably connected to the inner cavity of the feeding box (201). The top of the feeding plate (202) is fixedly connected to an abutting rod (207), and the end of the abutting rod (207) is in contact with one side of the vibrating sieve mechanism (6). Both sides of the top of the feeding plate (202) are fixedly connected with sliding sleeves (203). A sliding rod (204) is slidably connected in the sliding sleeve (203). One end of the sliding rod (204) is fixedly connected to one side of the inner cavity of the feeding box (201). A first spring (205) is sleeved on the outer side wall of the sliding rod (204). Both ends of the first spring (205) are fixedly connected to the sliding rod (204) and the corresponding position on one side of the stepped block respectively. One side of the feeding box (201) is communicated with a feeding guide plate (206), and the feeding guide plate (206) is arranged at an inclined angle. The top of the feeding plate (202) is an inclined surface, and the inclined surface of the feeding plate (202) inclines towards the screening box (3). The cross-sectional shape of the feeding guide plate (206) is U-shaped. The vibrating sieve mechanism (6) includes a reciprocating rod (602). A driving part is arranged at the top of the reciprocating rod (602). The reciprocating rod (602) is slidably connected to the top of the cover of the screening box (3). A plurality of inclined sieves (607) are fixedly connected to the outer side wall of the reciprocating rod (602). The upper surface of the inclined sieve (607) is inclined. The two ends of the inclined surface of the inclined sieve (607) are respectively arranged on both sides of the feeding and discharging ports of the feeding mechanism (2) and the feeding mechanism (5) to select suitable particle size fillers through vibration screening after the material enters. The driving part of the vibrating sieve mechanism (6) includes a motor (606). The motor (606) is fixedly installed on the top of the cover of the screening box (3). The output shaft of the motor (606) is fixedly connected with a polarization wheel (605). A contact block (604) is attached to the top of the polarization wheel (605). The contact block (604) is fixedly connected to the top end of a reciprocating rod (602). A second spring (603) is sleeved on the outer side wall of the reciprocating rod (602). The two ends of the second spring (603) are respectively fixedly connected to the contact block (604) and the corresponding position on one side of the top of the cover of the screening box (3). A connecting plate (601) is fixedly connected to the top of the contact block (604). The connecting plate (601) is fixedly connected to one side of the feeding mechanism (5).

2. The asphalt concrete production equipment based on warm mix technology according to claim 1, characterized in that, The bottom end of the reciprocating rod (602) passes through a sealing sleeve embedded at the bottom of the screening box (3), and an expansion link (608) is fixedly connected thereto. The bottom end of the expansion link (608) is fixedly connected to a mounting plate (609). Both sides of the top of the mounting plate (609) are fixedly connected to fixing rods (610). The fixing rods (610) are fixedly connected to both sides of the bottom of the screening box (3). A third spring (611) is sleeved on the outer side wall of the expansion link (608). The two ends of the third spring (611) are respectively fixedly connected to the outside of the expansion link (608) and the corresponding position on one side of the bottom end of the reciprocating rod (602).

3. An asphalt concrete production device based on warm mix technology according to claim 1, characterized in that, The feeding mechanism (5) includes a feeding box (501). The feeding box (501) is fixedly connected to one side of the screening box (3). The bottom of the feeding box (501) is connected to the top of the mixing box (8) through a pipe body. A lead screw seat (503) is embedded at the top of the feeding box (501). A driving lead screw (504) is in threaded connection with the inner cavity of the lead screw seat (503). The top end of the driving lead screw (504) is fixedly connected to a connecting rod (505). The top end of the connecting rod (505) is rotatably connected to the bottom of the connecting plate (601). The bottom end of the driving lead screw (504) is fixedly connected to a feeding auger (502). The feeding auger (502) is located inside the feeding box (501). A plurality of material valves (7) are connected to one side of the screening box (3), and the material valves (7) are located on one side of the inclined sieve (607) at the corresponding position.

4. An asphalt concrete production device based on warm mix technology according to claim 1, characterized in that, The heat exchange mechanism (4) includes a heat exchange jacket kettle (401). The heat exchange jacket kettle (401) is connected to the outside of the mixing box (8). One side of the heat exchange jacket kettle (401) is connected to a heat conduction jacket (403) through a heat exchange pipe (402). The heat conduction jacket (403) is sleeved on the outer pipe body at the bottom of the feeding box (501). One side of the heat conduction jacket (403) is connected to a pump body (405) through a connecting pipe (404). The pump body (405) is fixedly installed on the top of the base (1) through a mounting plate (609). The liquid outlet of the pump body (405) is connected to a reflux heat pipe (406). The reflux heat pipe (406) is connected to one side of the reflux liquid port of the heat exchange jacket kettle (401).

5. A bituminous concrete production device based on warm mix technology according to claim 1, characterized in that, One side of the mixing box (8) is connected to a finished product conveying valve (9), and the finished product conveying valve (9) is located at the end of the mixing box (8).

6. The production method of an asphalt concrete production device based on warm mix technology according to claim 4, characterized in that Specifically, it includes the following steps: S1. When preparing for warm mix asphalt production, the asphalt aggregate is sequentially fed into the feeding mechanism (2) at the corresponding position through the external feeding conveyor belt; S2. After the asphalt aggregate entering the screening box (3) is fed into the screening box (3) through the feeding mechanism (2), it falls into the vibrating screen mechanism (6). At this time, the vibrating screen mechanism (6) works to vibrate and screen the incoming asphalt aggregate; S3. The classified asphalt aggregate enters the feeding mechanism (5) through the closing of the material valve (7). The feeding mechanism (5) mixes the asphalt aggregate of the corresponding screening grade fed by the material valve (7) and then feeds it into the mixing box (8); S4. After the asphalt aggregate enters the mixing box (8), the pump body (405) on one side of the mixing box (8) extracts the asphalt liquid and feeds it into the mixing box (8). The asphalt and asphalt aggregate in the mixing box (8) are squeezed and mixed, and then fully combined under the heating state of the heat exchange mechanism (4) to complete the production of asphalt concrete.

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