Asphalt storage metering tank
By using a drive mechanism and motor-controlled reverse stirring and a tilting tank design, the problems of uneven density and discharge blockage in asphalt storage tanks are solved, achieving uniform mixing and smooth discharge of asphalt, and reducing equipment wear and cleaning costs.
Patent Information
- Application Number
- CN202522017388.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-19
AI Technical Summary
The existing asphalt storage tanks have uneven density after heating, which leads to blockage of the discharge pipe. In addition, the existing mixing mechanism is prone to wear, making it difficult to ensure the uniformity of asphalt and the smoothness of discharge.
The drive mechanism drives the ring gear disc to rotate in the opposite direction, and the bevel gear transmission causes the stirring blades on the sleeve shaft to reverse, forming a convective circulation stirring. The drive motor adjusts the tilt of the tank to facilitate material discharge, and the combination of electric heating and hot oil circulation improves the uniformity of heating.
It achieves uniform asphalt composition and smooth discharge, reduces wear on mixing blades, lowers manual cleaning costs, and meets construction requirements.
Smart Images
Figure CN224676937U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metering tank technology, specifically to an asphalt storage metering tank. Background Technology
[0002] Asphalt storage and metering tanks are key equipment in road construction, asphalt processing and storage. They are mainly used for high-temperature storage, metering and conveying of modified asphalt, base asphalt and other materials. They maintain the fluidity of asphalt through a heating system to prevent clumping or segregation, and can monitor the asphalt storage in the tank in real time to meet the construction mix requirements. They are equipped with pumping or gravity discharge systems to ensure continuous material supply to pavers or processing equipment.
[0003] To ensure the performance of asphalt, existing metering tanks typically require the asphalt to be stored in a high-temperature environment. Therefore, asphalt storage tanks are usually equipped with heating mechanisms at the bottom to heat the bottom of the tank and thus raise the temperature of the asphalt. However, most asphalt storage tanks have their discharge pipes located at the bottom. This causes the asphalt at the bottom to decrease in density and float upwards after heating, while the asphalt at the top sinks. Asphalt that has not been effectively heated during discharge is prone to clumping and clogging the discharge pipe, resulting in uneven asphalt density within the tank. Furthermore, the existing mixing mechanisms rely on complex mixing blades to ensure uniform mixing, which leads to easier wear of the blades and presents certain drawbacks.
[0004] In view of the above, this application is hereby submitted. Utility Model Content
[0005] The purpose of this invention is to provide an asphalt storage metering tank to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, this utility model provides an asphalt storage metering tank, including a horizontally arranged tank body and a box body fixed to one end of the tank body. A drive mechanism is coaxially arranged inside the box body. The drive mechanism rotates through the box body and is arranged inside the tank body. The drive mechanism includes a first annular gear disk and a second annular gear disk arranged coaxially. The first annular gear disk is arranged further away from the tank body than the second annular gear disk. The same bevel gear meshes on the side of the first annular gear disk and the second annular gear disk that are close to each other. A fixed shaft is coaxially fixedly connected to the side wall of the first annular gear disk that is close to the second annular gear disk. The fixed shaft, at the end away from the first annular toothed disc, rotates through the second annular toothed disc and the box body to the inside of the tank. The end of the fixed shaft away from the first annular toothed disc is coaxially fixed with a connecting part. The end of the second annular toothed disc away from the first annular toothed disc is fixed with a connecting shaft. The connecting shaft is rotatably sleeved on the outside of the fixed shaft. The side of the connecting shaft away from the second annular toothed disc is engaged with a sleeve shaft one. The outside of the connecting part is sleeve shaft two. Multiple stirring blades are fixed on the outer arc wall of both sleeve shaft one and sleeve shaft two, which are arranged in a ring array about their own axial direction. The stirring blades abut against the inner arc wall of the tank.
[0007] Furthermore, the cross-sectional radius of the connecting part is larger than that of the fixed shaft. A spline sleeve is fixed on the outer arc wall of the connecting part, and a spline groove is coaxially formed on the inner arc wall of the sleeve shaft two. The spline sleeve and the spline groove slide with each other. A fixing bolt is coaxially fixed at the end of the connecting part away from the fixed shaft. A fixing cap is threaded to the outside of the fixing bolt. The fixing bolt is located at the end of the sleeve shaft two away from the connecting part, and the fixing cap abuts against the sleeve shaft two. The sleeve shaft one is located between the sleeve shaft two and the connecting shaft. Multiple inserts are fixed on the side wall of the sleeve shaft one near the connecting shaft, arranged in a ring array about its axial direction. Multiple slots are formed on the side wall of the connecting shaft near the sleeve shaft one, arranged in a ring array about its axial direction. The multiple slots correspond one-to-one with the multiple inserts, and the inserts and slots are inserted into each other.
[0008] Furthermore, the end of the fixed shaft near the first annular gear disk passes through the first annular gear disk and is rotatably connected to the inner wall of the box body away from the tank body. Two fixed rings are coaxially rotatably sleeved on the outer arc wall of the fixed shaft, passing through the first annular gear disk. The fixed rings are located on the side of the first annular gear disk away from the second annular gear disk. The two fixed rings are fixed to each other and fixed to the inner wall of the box body. A return pipe is opened inside the fixed shaft. The two ends of the return pipe are respectively connected to the inside of the fixed rings. An oil inlet pipe is fixed on the outer arc wall of the fixed ring. The end of the oil inlet pipe away from the fixed ring passes through the box body to the outside. A drive gear is coaxially fixed on the outer arc wall of the fixed shaft between the first annular gear disk and the fixed ring. A drive gear is meshed at the bottom of the first drive gear. A transmission shaft is fixed along the axial direction of the second drive gear. The end of the transmission shaft away from the second drive gear rotatably passes through the box body to the outside.
[0009] Furthermore, the tank body has fixed seats on both sides along its axial direction at the bottom. The fixed seats located away from the tank body are rotatably connected to a rotating seat at their bottom. The fixed seats located close to the tank body are rotatably connected to a vertical top rod at their bottom. The end of the top rod away from the fixed seat is rotatably connected to a horizontal sliding seat. The bottom of the sliding seat and the rotating seat are provided with the same horizontal stable platform. The sliding seat slides on the top surface of the stable platform. A horizontal lead screw passes through the center of the side wall of the sliding seat sliding on the top of the stable platform along the axial direction of the tank body. A drive motor is fixed to one end of the lead screw along its axial direction. A weighing device is provided at the bottom of the stable platform.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the drive mechanism, the first and second annular gear discs rotate in opposite directions via bevel gears, driving the first and second sleeve shafts respectively, so that the mixing blades on them can rotate in opposite directions on the same axis, forming a "convection circulation". Thus, a simple shape and fewer mixing blades can ensure uniform mixing. At the same time, the mixing blades abut against the inner wall of the tank to scrape off residual asphalt, continuously mix to prevent light components from floating, and ensure that the asphalt composition is uniform to meet the construction requirements.
[0011] 2. The drive motor drives the lead screw to rotate, pushing the sliding seat to move along the stable platform, forcing the top rod to lift one end of the tank, achieving controllable tilting. This allows the asphalt to flow more easily to the discharge port under gravity, reducing pumping pressure. The tilting mechanism, combined with the mixing mechanism, ensures that the asphalt at the bottom of the tank is mixed evenly. When the amount of asphalt in the tank is small, it can help the remaining asphalt to flow out completely, reducing manual cleaning costs. Attached Figure Description
[0012] Figure 1 A schematic diagram of the overall structure of an asphalt storage metering tank; Figure 2 A cross-sectional view of the internal structure of the tank body and the box body in an asphalt storage metering tank; Figure 3 An exploded view of the drive mechanism in an asphalt storage metering tank. Figure 4 This is a cross-sectional view of the internal structure of a fixed shaft and a fixed ring in an asphalt storage metering tank.
[0013] In the picture: 10. Tank body; 11. Box body; 12. Fixed base; 13. Rotating base; 14. Stabilizing platform; 15. Sliding seat; 16. Push rod; 17. Lead screw; 20. Ring gear disc one; 21. Bevel gear; 22. Ring gear disc two; 221. Connecting shaft; 23. Sleeve 1; 231. Insert block; 24. Fixed shaft; 241. Connecting part; 242. Return pipe; 25. Shaft sleeve 2; 26. Fixing bolt; 261. Fixing cover; 27. Stirring blade; 30. Drive gear one; 31. Drive gear two; 32. Retaining ring; 321. Oil inlet pipe. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see the appendix Figure 1 To be continued Figure 4 The present invention provides an asphalt storage metering tank, comprising a horizontally arranged tank body 10 and a box body 11 fixed at one end thereto. A drive mechanism is coaxially arranged inside the box body 11. The drive mechanism rotates through the box body 11 to the inside of the tank body 10. The drive mechanism includes a coaxially arranged annular gear disk 20 and annular gear disk 22. The annular gear disk 20 is further away from the tank body 10 than the annular gear disk 22. The same bevel gear 21 meshes on the side of the annular gear disk 20 and the annular gear disk 22 that are close to each other. A fixed shaft 24 is coaxially fixedly connected to the side wall of the annular gear disk 20 that is close to the annular gear disk 22. The fixed shaft 24, at one end away from the first annular gear disk 20, rotates through the second annular gear disk 22 and the box 11 to the inside of the tank 10. The fixed shaft 24, at one end away from the first annular gear disk 20, is coaxially fixed with a connecting part 241. The second annular gear disk 22, at one end away from the first annular gear disk 20, is fixed with a connecting shaft 221. The connecting shaft 221 is rotatably sleeved on the outside of the fixed shaft 24. The side of the connecting shaft 221 away from the second annular gear disk 22 is engaged with a sleeve shaft 23. The outer side of the connecting part 241 is sleeved with a sleeve shaft 25. Multiple stirring blades 27, which are arranged in a ring array about their own axial direction, are fixed on the outer arc wall of both the sleeve shaft 23 and the sleeve shaft 25. The stirring blades 27 abut against the inner arc wall of the tank 10. The cross-sectional radius of the connecting part 241 is larger than that of the fixed shaft 24. A spline sleeve is fixed on the outer arc wall of the connecting part 241. A spline groove is coaxially opened on the inner arc wall of the sleeve shaft 25. The spline sleeve and the spline groove slide with each other. A fixing bolt 26 is coaxially fixed at the end of the connecting part 241 away from the fixed shaft 24. A fixing cover 261 is threaded to the outside of the fixing bolt 26. The fixing bolt 26 is located at the end of the sleeve shaft 25 away from the connecting part 241, and the fixing cover 261 abuts against the sleeve shaft 25. The first sleeve shaft 23 is disposed between the second sleeve shaft 25 and the connecting shaft 221. A plurality of insert blocks 231 are fixed on the side wall of the first sleeve shaft 23 near the connecting shaft 221 in a circular array about its axial direction. A plurality of slots are provided on the side wall of the connecting shaft 221 near the first sleeve shaft 23 in a circular array about its axial direction. The plurality of slots correspond one-to-one with the plurality of insert blocks 231 and the insert blocks 231 are inserted into the slots. One end of the fixed shaft 24 near the annular gear disk 20 passes through the annular gear disk 20 and is rotatably connected to the inner wall of the box 11 away from the tank 10. Two fixed rings 32 are coaxially rotatably sleeved on the outer arc wall of the fixed shaft 24, passing through the annular gear disk 20. The fixed rings 32 are located on the side of the annular gear disk 20 away from the second annular gear disk 22. The two fixed rings 32 are fixed to each other and fixed to the inner wall of the box 11. A return pipe 242 is opened inside the fixed shaft 24. The two ends of the return pipe 242 are respectively connected to the inside of the fixed rings 32. An oil inlet pipe 321 is fixed on the outer arc wall of the fixed ring 32. The end of the oil inlet pipe 321 away from the fixed ring 32 passes through the box 11 to the outside.
[0016] It should be noted that: the outer wall of the tank 10 and the connection between it and the box 11 are provided with a heat insulation layer. The heat insulation layer is a rock wool or polyurethane foam layer structure. The bottom of the tank 10 is provided with a discharge port on the side away from the box 11, and the top of the tank 10 is provided with a feed port on the side close to the box 11. The equipment is driven by an external power input via a drive shaft. In particular, for mobile asphalt storage tanks used for vehicle transportation, the power end of various tractor locomotives on the market can be used for transmission connection, which is convenient for external installation and power input. For stationary asphalt storage tanks, they can be connected to the drive source through a coupling. Driven by an external power source, the drive shaft rotates, causing the second drive gear 31 to rotate. Since the second drive gear 31 meshes with the first drive gear 30, the first drive gear 30 will rotate accordingly, thereby driving the fixed shaft 24 to rotate. When the fixed shaft 24 rotates, it directly drives the connecting part 241 to rotate. The connecting part 241 engages with the spline groove of the sleeve shaft 25 through the spline sleeve, driving the sleeve shaft 25 to rotate, thereby causing the stirring blades 27 on the sleeve shaft 25 to rotate and stir the asphalt on one side of the tank 10. On the other hand, the fixed shaft 24 drives the first annular gear disk 20 to rotate. The first annular gear disk 20 and the second annular gear disk 22 are driven by the meshing of the bevel gear 21, which causes the second annular gear disk 22 to rotate. The second annular gear disk 22 drives the first sleeve shaft 23 to rotate through the connecting shaft 221, which in turn causes the stirring blades 27 on the first sleeve shaft 23 to rotate, stirring the asphalt on the other side of the tank 10. This breaks the vortex formed by single stirring, reduces the complexity and number of blades, and also reduces the wear rate of the blades.
[0017] Please see the appendix Figure 1 To be continued Figure 4 The present invention provides a technical solution: a drive gear 30 is coaxially fixed on the outer arc wall of the fixed shaft 24 between the annular toothed disk 20 and the fixed ring 32. A drive gear 31 is meshed at the bottom of the drive gear 30. A transmission shaft is fixed along the axial direction of the drive gear 31. The end of the transmission shaft away from the drive gear 31 rotates through the housing 11 to the outside. The bottom of the tank body 10 is fixed with two fixed seats 12 on both sides along its axial direction. The bottom of the fixed seat 12 located away from the box body 11 is rotatably connected to a rotating seat 13. The bottom of the fixed seat 12 located close to the box body 11 is rotatably connected to a vertical top rod 16. The end of the top rod 16 away from the fixed seat 12 is rotatably connected to a horizontal sliding seat 15. The bottom of the sliding seat 15 and the rotating seat 13 is provided with the same horizontal stable platform 14. The sliding seat 15 slides on the top surface of the stable platform 14. A horizontal lead screw 17 is inserted through the center of the side wall along the axial direction of the tank body 10, and a sliding seat 15 that slides on the top of the stabilizing platform 14 rotates. A drive motor is fixed at one end of the lead screw 17 along its axial direction. A weighing device is provided at the bottom of the stabilizing platform 14.
[0018] It should be noted that: when the drive motor starts, it drives the lead screw 17 to rotate. The lead screw 17 is threadedly engaged with the sliding seat 15. When the lead screw 17 rotates, it drives the sliding seat 15 to slide on the stable platform 14. When the sliding seat 15 slides, it pushes the fixed seat 12 on the side close to the box 11 through the push rod 16, so that the tank 10 rotates around the rotating seat 13 on the side away from the box 11, thereby adjusting the angle of the tank 10 to facilitate the flow of the asphalt in the tank toward the discharge port. The tank 10 is placed on a weighing device on a stable platform 14. The weighing device measures the total weight of the tank 10 and the asphalt inside in real time. The amount of asphalt stored in the tank can be calculated by the difference between the weight of the tank 10 and the weight of the tank itself. The oil inlet pipe 321 is connected to a hot oil circulation device. The external hot oil enters the fixed ring 32 through the oil inlet pipe 321 and then circulates inside the fixed shaft 24 through the return pipe 242, directly heating the inside of the fixed shaft 24. The bottom of the tank 10 is equipped with an electric heating component, which works in conjunction with the electric heating to simultaneously heat the inside and outside, improving heating efficiency and heating uniformity.
[0019] Working principle: Driven by an external power source, the drive shaft drives the second drive gear 31 to rotate. The second drive gear 31 drives the first drive gear 30, which meshes with it, to rotate, thereby causing the fixed shaft 24 to rotate. The fixed shaft 24, on the one hand, engages with the spline groove of the sleeve shaft 25 through the spline sleeve of the connecting part 241, driving the stirring blades 27 on the sleeve shaft 25 to rotate and stir the asphalt. On the other hand, it drives the first annular gear disk 20 to rotate. Through the bevel gear 21, the second annular gear disk 22 rotates, and then drives the stirring blades 27 on the sleeve shaft 23 to stir the asphalt through the connecting shaft 221. The drive motor drives the lead screw 17 to rotate, which drives the sliding seat 15 to slide. The push rod 16 causes the tank body 10 to rotate around the rotating seat 13, which facilitates the outflow of asphalt. The tank body 10 is placed on the weighing equipment of the stable platform 14, which can measure the asphalt storage. The oil inlet pipe 321 is connected to the external hot oil circulation equipment. The hot oil heats the fixed shaft 24 through the fixed ring 32 and the return pipe 242, which, together with the electric heating component at the bottom of the tank body 10, improves the heating effect.
Claims
1. An asphalt storage metering tank, comprising a horizontally arranged tank body (10) and a box body (11) fixed to one end thereof, characterized in that: The box (11) is coaxially equipped with a drive mechanism. The drive mechanism rotates through the box (11) to the inside of the tank (10). The drive mechanism includes a first annular gear disk (20) and a second annular gear disk (22) coaxially arranged. The first annular gear disk (20) is located further away from the tank (10) than the second annular gear disk (22). The same bevel gear (21) meshes on the side of the first annular gear disk (20) and the second annular gear disk (22) that are close to each other. A fixed shaft (24) is coaxially fixedly connected to the side wall of the first annular gear disk (20) that is close to the second annular gear disk (22). The fixed shaft (24) rotates through the annular toothed disc (22) and the box (11) to the inside of the tank (10) at the end away from the annular toothed disc (20). The fixed shaft (24) is coaxially fixed with a connecting part (241) at the end away from the annular toothed disc (20). The annular toothed disc (22) is fixed with a connecting shaft (221) at the end away from the annular toothed disc (20). The connecting shaft (221) is rotated and sleeved on the outside of the fixed shaft (24). The connecting shaft (221) is engaged with a sleeve shaft (23) on the side away from the annular toothed disc (22). The sleeve shaft (25) is sleeved on the outside of the connecting part (241). Multiple stirring blades (27) are fixed on the outer arc wall of the sleeve shaft (23) and the sleeve shaft (25) respectively arranged in a ring array about their own axis. The stirring blades (27) abut against the inner arc wall of the tank (10).
2. The asphalt storage metering tank as described in claim 1, characterized in that: The cross-sectional radius of the connecting part (241) is greater than that of the fixed shaft (24). A spline sleeve is fixed on the outer arc wall of the connecting part (241). A spline groove is coaxially opened on the inner arc wall of the sleeve shaft two (25). The spline sleeve and the spline groove slide together. A fixing bolt (26) is coaxially fixed at the end of the connecting part (241) away from the fixed shaft (24). A fixing cover (261) is threaded on the outside of the fixing bolt (26). The fixing bolt (26) is located at the end of the sleeve shaft two (25) away from the connecting part (241), and the fixing cover (261) abuts against the sleeve shaft two (25).
3. The asphalt storage metering tank as described in claim 1, characterized in that: The first sleeve shaft (23) is disposed between the second sleeve shaft (25) and the connecting shaft (221). On the side wall of the first sleeve shaft (23) near the connecting shaft (221), there are a plurality of inserts (231) arranged in a ring array about its axial direction. On the side wall of the connecting shaft (221) near the first sleeve shaft (23), there are a plurality of slots arranged in a ring array about its axial direction. The plurality of slots correspond one-to-one with the plurality of inserts (231) and the inserts (231) are inserted into the slots.
4. The asphalt storage metering tank as described in claim 1, characterized in that: The fixed shaft (24) is connected to the inner wall of the box (11) away from the tank (10) at one end near the first annular gear disk (20). Two fixed rings (32) are coaxially mounted on the outer arc wall of the fixed shaft (24) at one end that passes through the first annular gear disk (20). The fixed rings (32) are located on the side of the first annular gear disk (20) away from the second annular gear disk (22). The two fixed rings (32) are fixed to each other and fixed to the inner wall of the box (11). A return pipe (242) is opened inside the fixed shaft (24). The two ends of the return pipe (242) are connected to the inside of the fixed ring (32). An oil inlet pipe (321) is fixed on the outer arc wall of the fixed ring (32). The end of the oil inlet pipe (321) away from the fixed ring (32) passes through the box (11) to the outside.
5. An asphalt storage metering tank as described in claim 4, characterized in that: On the outer arc wall of the fixed shaft (24), a drive gear 1 (30) is coaxially fixed between the annular gear disk 1 (20) and the fixed ring (32). The bottom of the drive gear 1 (30) is meshed with a drive gear 2 (31). The drive gear 2 (31) is axially fixed with a transmission shaft. The end of the transmission shaft away from the drive gear 2 (31) rotates through the housing (11) to the outside.
6. The asphalt storage metering tank as described in claim 1, characterized in that: The tank body (10) has fixed seats (12) on both sides along its axial direction at the bottom. The bottom of the fixed seat (12) located away from the box body (11) is rotatably connected to a rotating seat (13). The bottom of the fixed seat (12) located near the box body (11) is rotatably connected to a vertical top rod (16). The end of the top rod (16) away from the fixed seat (12) is rotatably connected to a horizontal sliding seat (15). The bottom of the sliding seat (15) and the rotating seat (13) is provided with the same horizontal stable platform (14). The sliding seat (15) slides on the top surface of the stable platform (14).
7. An asphalt storage metering tank as described in claim 6, characterized in that: A sliding seat (15) sliding on the top of the stable platform (14) rotates through a horizontal lead screw (17) at the center of the side wall along the axial direction of the tank body (10). A drive motor is fixed to one end of the lead screw (17) along its axial direction.
8. An asphalt storage metering tank as described in claim 6, characterized in that: The stable platform (14) is equipped with a weighing device at its bottom.