Road building modified asphalt production device

Abstract

The utility model relates to a kind of road construction modified asphalt production device, belong to road asphalt equipment technical field, including rack, batching tank, stirring tank, discharge pipe, material conveying pipe, colloid mill, circulation pipe, material conveying pipe another end is connected with finished product delivery pump, the top of batching tank and two stirring tanks are all fixed with matrix asphalt inlet pipe, the top of batching tank is connected with weighing bin, weighing bin is connected with weighing frame by tension sensor, weighing frame is fixed on rack, the upper portion of weighing bin is equipped with screw conveyor, filter is connected between material conveying pipe and colloid mill, filter and circulation pipe are all connected with a section of bellows between colloid mill.The utility model can accurately measure the dosage of modifier by weighing bin and tension sensor, ensure the accuracy of modified asphalt batching;Material is ground by colloid mill and then returns to stirring tank by circulation pipe for cyclic treatment, cooperating with the stirring equipment arranged in stirring tank, the uniformity of material mixing can be significantly improved.

Description

Technical Field

[0001] This utility model relates to a road construction modified asphalt production device, belonging to the technical field of road asphalt equipment. Background Technology

[0002] Modified asphalt is a commonly used high-performance material in road construction. By adding modifiers to base asphalt and processing it through mixing and grinding, its high-temperature stability and low-temperature crack resistance can be significantly improved. However, existing modified asphalt production equipment generally suffers from insufficient batching precision and uneven material mixing, affecting the quality of the modified asphalt product. Utility Model Content

[0003] This utility model provides a device for producing modified asphalt for road construction, which solves the problems existing in the background art.

[0004] This utility model provides a road construction modified asphalt production device, including a frame, on which a batching tank and two mixing tanks are fixed. A discharge pipe is fixed to the bottom of the batching tank and the two mixing tanks, and the discharge pipe is connected to a conveying pipe. The conveying pipe is connected to a colloid mill, and a circulation pipe connected to the top of the two mixing tanks is fixed to the outlet of the colloid mill. The other end of the conveying pipe is connected to a finished product conveying pump. A base asphalt inlet pipe is fixed to the top of both the batching tank and the two mixing tanks. A weighing bin is connected to the top of the batching tank, and a weighing frame is connected to the weighing bin via a tension sensor. The weighing frame is fixed to the frame. A screw conveyor is installed above the weighing bin. A filter is connected between the conveying pipe and the colloid mill, and a section of corrugated pipe is connected between the filter and the circulation pipe and the colloid mill.

[0005] As a preferred embodiment, the bottom of the filter is fitted with a limiting sleeve, and a support plate is fixed to the bottom of the limiting sleeve. The support plate has symmetrical mounting holes on both sides, and adjusting screws are installed in the mounting holes. Adjusting nuts are installed on the adjusting screws at the top and bottom of the support plate. The height of the support plate can be flexibly adjusted by adjusting the nuts, thereby adjusting the installation position of the filter. This facilitates the disassembly, assembly, and daily maintenance of the filter, reduces equipment maintenance costs, and provides support to the bottom of the filter, making it more stable. The filter is an asphalt filter.

[0006] As a preferred embodiment, a mounting plate is fixed to the bottom of the colloid mill. The mounting plate has evenly spaced through holes along its edges, each containing a mounting bolt. A damping rubber block is fitted around the center of each mounting bolt, and a damping plate is located at the bottom of the rubber block. The bottom of the damping plate is fixed to the frame. Limit nuts are connected to the upper and lower ends of the mounting bolts, which pass through the mounting plate and the damping plate, respectively. The damping rubber block effectively absorbs vibrations generated during the colloid mill's operation, reducing operating noise and minimizing wear on equipment components, thus extending the overall service life of the equipment. The limit nuts securely fix the mounting plate and damping plate, ensuring structural stability.

[0007] As a preferred embodiment, the damping rubber block is provided with limiting bosses at both the top and bottom, and the mounting plate and damping plate are provided with limiting grooves that mate with the limiting bosses. The fit between the limiting bosses and the limiting grooves can prevent the damping rubber block from shifting under stress, ensuring the stability of the damping effect and ensuring the long-term stable operation of the colloid mill.

[0008] As a preferred embodiment, a feeding platform is fixed to the lower end of the screw conveyor, and a feeding hopper is fixed to the feed inlet of the screw conveyor. The feeding hopper is fixed to the feeding platform, and the feeding platform is connected to a feeding staircase. The feeding staircase provides a convenient passage for operators to add modifiers into the feeding hopper, improving operational convenience, reducing the labor intensity of manual feeding, and increasing production efficiency.

[0009] As a preferred embodiment, a feed pipe is fixed to the top of the weighing hopper, a feeding pipe is provided at the top of the mixing tank, and a discharge pipe extending into the feeding pipe is provided at the bottom of the weighing hopper. The discharge pipe of the screw conveyor extends into the feed pipe. Gaps are provided between the discharge pipe and the feed pipe, and between the feeding pipe and the discharge pipe, to avoid rigid contact between components affecting the weighing accuracy of the tension sensor and ensure measurement accuracy. Both the discharge pipe of the screw conveyor and the discharge pipe of the weighing hopper are equipped with L-shaped dust covers on their outer walls. This effectively prevents modifier dust from spilling out, improving the production environment.

[0010] As a preferred embodiment, both the feeding pipe and the feed pipe have fixing grooves on their inner tops, and sealing felt rings are fixed in these grooves. Sealing felt fibers are evenly fixed to the inner side of each sealing felt ring. The combination of the sealing felt rings and the sealing felt fibers further enhances the sealing effect at the connection, reduces dust leakage, improves the environmental performance of the equipment, and protects the health of operators.

[0011] As a preferred embodiment, the weighing frame is constructed from four channel steel pieces joined together to form a square structure. A semi-circular support sleeve is fixed to the upper bottom wall of the screw conveyor. Welded arm plates are fixed to both sides of the support sleeve. The lower end of the welded arm plate has a limiting boss that extends into the groove of the channel steel. The top and bottom of the limiting boss are provided with arc-shaped grooves that mate with the outer edge of the channel steel. This structure enhances the connection stability between the screw conveyor and the weighing frame.

[0012] This utility model has the following beneficial effects: Precise ingredient mixing: By combining a weighing bin with a tension sensor, the amount of modifier added can be accurately measured, ensuring the accuracy of modified asphalt batching; Thorough mixing: After being ground by a colloid mill, the material is returned to the mixing tank through a circulation pipe for recycling. Combined with the mixing equipment installed in the mixing tank, the uniformity of material mixing can be significantly improved. Stable operation: Corrugated pipes are installed at both the inlet and outlet of the colloid mill, which can buffer pipeline displacement, reduce equipment wear and noise, prevent vibration from damaging the circulation pipe, and facilitate easy connection and fixation. Attached Figure Description

[0013] Figure 1 This is a top view of the structure of this utility model; Figure 2 for Figure 1 Partial structural diagram Figure 1 ; Figure 3 for Figure 1 Partial structural diagram Figure 2 ; Figure 4 This is a schematic diagram of the upper structure of the support sleeve; Figure 5 for Figure 2 Enlarged structural diagram at point A; Figure 6 for Figure 2 Enlarged structural diagram at point B; Figure 7 for Figure 2 Enlarged structural diagram at point C; In the diagram: 1. Frame; 2. Feed pipe; 3. Mounting plate; 4. Colloid mill; 5. Corrugated pipe; 6. Filter; 7. Circulation pipe; 8. Mixing tank; 9. Mixing motor; 10. Base asphalt inlet pipe; 11. Batching tank; 12. Weighing frame; 13. Feed pipe; 14. Support sleeve; 15. Welded arm plate; 16. Weighing bin; 17. Feeding pipe; 18. Screw conveyor; 19. Support plate; 20. Adjusting screw; 21. Shock-absorbing rubber block; 22. Dust cover; 23. Sealing felt ring; 24. Sealing felt. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] Example 1, as Figures 1 to 7 As shown, this utility model provides a road construction modified asphalt production device, including a frame 1. A batching tank 11 and two mixing tanks 8 are fixed on the frame 1. A discharge pipe is fixed at the bottom of the batching tank 11 and the two mixing tanks 8. An agitator is installed in the batching tank 11 and the two mixing tanks 8. The agitator is connected to a mixing motor 9. A conveying pipe 2 is connected to the discharge pipe. A colloid mill 4 is connected to the conveying pipe 2. A circulation pipe 7 connected to the top of the two mixing tanks 8 is fixed at the outlet of the colloid mill 4. A finished product conveying pump is connected to the other end of the conveying pipe 2. A base asphalt inlet pipe 10 is fixed at the top of the batching tank 11 and the two mixing tanks 8. A weighing bin 16 is connected to the top of the batching tank 11. A weighing frame 12 is connected to the weighing bin 16 through a tension sensor. The weighing frame 12 is fixed on the frame 1. A screw conveyor 18 is installed on the upper part of the weighing bin 16. A filter 6 is connected between the conveying pipe 2 and the colloid mill 4. A section of corrugated pipe 5 is connected between the filter 6 and the circulation pipe 7 and the colloid mill 4.

[0016] During operation, base asphalt enters the batching tank 11 through the base asphalt inlet pipe 10, and the screw conveyor 18 transports the modifier into the weighing bin 16. After the modifier enters the weighing bin 16, the tension sensor monitors the weight of the material in the weighing bin 16 in real time. When the weight of the modifier reaches the set value, the plate valve at the bottom of the weighing bin 16 opens, and the modifier enters the batching tank 11. The base asphalt and modifier entering the batching tank 11 are initially mixed under the action of the agitator to form a basic mixture. In this stage, the agitator ensures that the modifier is evenly dispersed in the base asphalt, laying the foundation for subsequent grinding. The pre-mixed material enters the conveying pipe 2 through the discharge pipe at the bottom of the batching tank 11, and first flows through the filter 6: the filter 6 can intercept any impurities that may be present in the material, ensuring the purity of the material entering the colloid mill 4. The filtered material enters the colloid mill 4: the colloid mill 4 refines the modifier particles and evenly disperses them in the asphalt through high-speed shearing and grinding, significantly improving the homogeneity of the mixture. The material ground by the colloid mill 4 flows back to the two mixing tanks 8 through the outlet and circulation pipe 7. After entering the mixing tanks 8, the material is mixed again with the base asphalt in the tank under the drive of the stirring motor 9, forming a "stirring-grinding-re-stirring" cycle to ensure that the modifier and asphalt are fully integrated. After preparation, the finished product delivery pump transports the modified asphalt out.

[0017] In Example 2, based on Example 1, a limiting sleeve is fitted onto the bottom of the filter 6. A support plate 19 is fixed to the bottom of the limiting sleeve. The support plate 19 has symmetrical mounting holes on both sides, and adjusting screws 20 are installed in the mounting holes. Adjusting nuts are provided on both the upper and lower adjusting screws 20 of the support plate 19. The height of the filter 6 can be changed by adjusting the upper and lower adjusting nuts of the support plate 19, facilitating easy disassembly and maintenance.

[0018] A mounting plate 3 is fixed to the bottom of the colloid mill 4. Through holes are evenly distributed along the edge of the mounting plate 3, and mounting bolts are installed within these holes. A shock-absorbing rubber block 21 is fitted around the center of each mounting bolt. A shock-absorbing plate is installed at the bottom of the shock-absorbing rubber block 21, and the bottom of the shock-absorbing plate is fixed to the frame 1. Limit nuts are connected to the upper and lower ends of the mounting bolts, which pass through the mounting plate 3 and the shock-absorbing plate, respectively. Heating jackets can be installed on the asphalt conveying pipelines, such as the circulation pipe 7, discharge pipe, conveying pipe 2, and matrix asphalt inlet pipe 10. Heating jackets or heating coils are installed on the batching tank 11 and the two mixing tanks 8. Temperature sensors are installed inside the batching tank 11 and the two mixing tanks 8. The temperature sensors are connected to a controller, which is connected to valves, weighing sensors, and motors on each pipeline.

[0019] The vibration damping rubber block 21 is provided with limiting bosses at both the top and bottom, and the mounting plate 3 and the vibration damping plate are provided with limiting grooves that cooperate with the limiting bosses. The vibration generated by the colloid mill 4 during operation is transmitted to the vibration damping rubber block 21 through the bottom mounting plate 3: the limiting bosses at the top and bottom of the vibration damping rubber block 21 cooperate with the limiting grooves of the mounting plate 3 and the vibration damping plate to prevent the rubber block from shifting, ensure that the vibration is effectively absorbed, and reduce equipment noise and wear.

[0020] A loading platform is fixed to the lower end of the screw conveyor 18, and a feeding hopper is fixed to the inlet of the screw conveyor 18. The feeding hopper is fixed to the loading platform, and the loading platform is connected to a loading staircase. The operator climbs onto the loading platform via the loading staircase and pours the modifier into the feeding hopper of the screw conveyor.

[0021] The weighing bin 16 is fixed with a feed pipe 13 at the top, the batching tank 11 is provided with a feeding pipe 17 at the top, the weighing bin 16 is provided with a discharge pipe extending into the feeding pipe 17 at the bottom, the screw conveyor 18 is provided with a discharge pipe extending into the feed pipe 13, and there are gaps between the screw conveyor 18 and the feed pipe 13, and between the feeding pipe 17 and the discharge pipe. The screw conveyor 18 and the weighing bin 16 are both provided with L-shaped dust covers 22 on their outer walls.

[0022] Both the top inner side of the feeding pipe 17 and the feed pipe 13 are provided with fixing grooves, and sealing felt rings 23 are fixed in the fixing grooves. Sealing felt fibers 24 are evenly fixed on the inner side of the sealing felt rings 23. The setting of sealing felt rings 23 and sealing felt fibers 24, together with the dust cover 22, can prevent dust from leaking out and prevent external dust from entering.

[0023] The weighing frame 12 is a square structure formed by splicing and fixing four channel steels. A semi-circular support sleeve 14 is fixed on the upper bottom wall of the screw conveyor 18. Welded arm plates 15 are fixed on both sides of the support sleeve 14. The lower end of the welding arm plate 15 is provided with a limiting boss that extends into the groove of the channel steel. The top and bottom of the limiting boss are provided with arc-shaped grooves that mate with the outer edge of the channel steel. During welding, the limiting boss is inserted into the groove of the channel steel, and the outer edge of the channel steel is matched with the arc-shaped groove for limiting, and then welding can be carried out.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0025] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A road construction modified asphalt production apparatus, comprising a frame (1), characterized in that: A batching tank (11) and two mixing tanks (8) are fixed on the frame (1). A discharge pipe is fixed at the bottom of the batching tank (11) and the two mixing tanks (8). The discharge pipe is connected to a conveying pipe (2). The conveying pipe (2) is connected to a colloid mill (4). A circulation pipe (7) is fixed at the outlet of the colloid mill (4) and connected to the top of the two mixing tanks (8). The other end of the conveying pipe (2) is connected to a finished product conveying pump. A base is fixed at the top of the batching tank (11) and the two mixing tanks (8). The asphalt inlet pipe (10) is connected to the top of the batching tank (11) and a weighing bin (16). The weighing bin (16) is connected to a weighing frame (12) via a tension sensor. The weighing frame (12) is fixed on the frame (1). A screw conveyor (18) is provided on the upper part of the weighing bin (16). A filter (6) is connected between the conveying pipe (2) and the colloid mill (4). A section of corrugated pipe (5) is connected between the filter (6) and the circulation pipe (7) and the colloid mill (4).

2. The road construction modified asphalt production device according to claim 1, characterized in that: The bottom of the filter (6) is fitted with a limiting sleeve, and a support plate (19) is fixed at the bottom of the limiting sleeve. The support plate (19) has symmetrical mounting holes on both sides, and an adjusting screw (20) is provided in the mounting hole. Adjusting nuts are provided on the adjusting screws (20) above and below the support plate (19).

3. The road construction modified asphalt production device according to claim 1, characterized in that: The bottom of the colloid mill (4) is fixed with a mounting plate (3). The edge of the mounting plate (3) is evenly provided with through holes. The through holes are provided with mounting bolts. The middle of the mounting bolt is fitted with a shock-absorbing rubber block (21). The bottom of the shock-absorbing rubber block (21) is provided with a shock-absorbing plate. The bottom of the shock-absorbing plate is fixed to the frame (1). The upper and lower ends of the mounting bolt pass through the mounting plate (3) and the shock-absorbing plate respectively and are connected to the limit nuts.

4. The road construction modified asphalt production device according to claim 3, characterized in that: The top and bottom of the shock-absorbing rubber block (21) are provided with limiting bosses, and the mounting plate (3) and the shock-absorbing plate are provided with limiting grooves that cooperate with the limiting bosses.

5. The road construction modified asphalt production device according to claim 1, characterized in that: The lower end of the screw conveyor (18) is fixed with a loading platform, the feed inlet of the screw conveyor (18) is fixed with a feed hopper, the feed hopper is fixed on the loading platform, and the loading platform is connected to a loading staircase.

6. The road construction modified asphalt production device according to claim 1, characterized in that: The weighing bin (16) is fixed with a feed pipe (13) at the top, the batching tank (11) is provided with a feeding pipe (17) at the top, the weighing bin (16) is provided with a discharge pipe extending into the feeding pipe (17) at the bottom, the screw conveyor (18) discharge pipe extends into the feed pipe (13), there are gaps between the screw conveyor (18) discharge pipe and the feed pipe (13), and between the feeding pipe (17) and the discharge pipe, and L-shaped dust covers (22) are provided on the outer walls of the screw conveyor (18) discharge pipe and the weighing bin (16).

7. The road construction modified asphalt production device according to claim 6, characterized in that: The top inner side of the feeding pipe (17) and the feed pipe (13) are provided with a fixing groove, and a sealing felt ring (23) is fixed in the fixing groove. The inner side of the sealing felt ring (23) is uniformly fixed with sealing felt fibers (24).

8. The road construction modified asphalt production device according to claim 1, characterized in that: The weighing frame (12) is a square structure spliced ​​and fixed by four channel steels. A semi-circular support sleeve (14) is fixed on the upper bottom wall of the screw conveyor (18). Welded arm plates (15) are fixed on both sides of the support sleeve (14). The lower end of the welded arm plate (15) is provided with a limiting boss that extends into the groove of the channel steel. The top and bottom of the limiting boss are provided with arc grooves that cooperate with the outer side of the channel steel.

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