Emulsified asphalt testing machine
By improving the grinding chamber structure of the emulsified asphalt testing device and adopting a pivot end cap, stator end cap, and rotor design, the self-priming force is enhanced, solving the problem of insufficient self-priming force in the existing device. This results in improved emulsification effect and reduced foam generation, ensuring the stability of product performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN YINTERI ROAD & BRIDGE ENG CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-05-29
AI Technical Summary
The existing grinding chamber structure design of emulsified asphalt testing equipment results in low self-suction force, leading to poor absorption of asphalt and soap solution, and easily generating a large amount of foam, which affects the emulsification effect and product performance indicators.
The grinding chamber structure was improved by adopting a pivot end cap, stator end cap, and rotor design to enhance the self-suction force of the grinding chamber. The radial and circumferential flow channels were formed by the design of annular grooves and shaped grooves, which, combined with the high-speed rotating rotor, promoted the full suction and shearing of emulsified asphalt.
The self-suction force of the grinding chamber was improved, foam generation was reduced, emulsification effect was improved, and the accuracy of experimental indicators and stability of product performance were ensured.
Smart Images
Figure CN224299151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of emulsified asphalt technology, and specifically to an emulsified asphalt testing machine. Background Technology
[0002] To overcome the problem that high-capacity emulsified asphalt production equipment may produce asphalt with unstable or low performance in one or more indicators, and to avoid producing large quantities of waste emulsified asphalt, which would result in serious waste, a small-scale experimental production process with a large proportion of samples is usually conducted using emulsified asphalt testing equipment before large-scale production. This provides technical parameter support for subsequent large-scale production, stabilizes the process, improves the performance indicators of emulsified asphalt, and achieves good quality. However, the existing grinding chamber structure of emulsified asphalt testing / experimental devices is mostly the same as the technical solution disclosed in the patent document with application number 2014203140822 and authorization announcement number CN203878103U, entitled "Emulsified Asphalt Testing Machine". In this case, grinding teeth are only arranged between the opposite faces of the moving and stationary grinding discs in a radial pattern within the grinding chamber. During the emulsification production test, due to the design problem of the grinding disc structure, the self-suction force generated was relatively small, resulting in poor absorption of asphalt and soap solution, which easily generated a large amount of foam. This would adversely affect the emulsification effect and the guiding role of the experimental process indicators and product performance indicators. Utility Model Content
[0003] This invention provides an emulsified asphalt testing machine, which improves the structure of the grinding chamber, enhances the self-suction force of the grinding chamber, improves the emulsification effect, and reduces the amount of foam generated.
[0004] The technical solution adopted by this utility model to solve its technical problem is: an emulsified asphalt testing machine, including a grinding body matched with a drive motor. The grinding body includes a pivot end cover, a stator end cover, and a rotor.
[0005] The pivot end cover is fixedly connected to the drive motor. The pivot end cover has a shaft hole structure that matches the drive motor's shaft, allowing the drive motor's shaft to extend through the shaft hole structure into the pivot end cover and match the rotor, thereby driving the rotor to rotate relative to the pivot end cover and stator end cover. An annular groove is formed on the inner bottom surface of the pivot end cover.
[0006] The stator end cover includes a stator body and a material conveying pipe fixedly disposed on the closed end side of the stator body.
[0007] A feed shaft hole is formed at the center of the cover cavity of the stator body, and an annular groove II is formed at the edge, with the annular port of the annular groove II positioned outward relative to the bottom surface of the cover cavity. The rotor is disposed in the cover cavity of the stator body.
[0008] The lower end of the conveying pipe's cavity is connected to the feed shaft hole, and a column section is formed at the lower part of the conveying pipe. A through hole that can communicate with the cavity of the column section is formed on the bottom surface of the annular groove two.
[0009] The end cap opening of the pivot end cap is engaged and fixedly connected with the end cap opening of the stator body, so that the annular groove opening of the first annular groove is aligned with the annular groove opening of the second annular groove.
[0010] Multiple circumferentially spaced grooves are arranged on the inner bottom surface of the pivot end cover, on the inner side of the annular groove, on the bottom surface of the cover cavity of the stator body, and on the two end faces of the rotor. Each groove is triangular in shape with its tip close to the shaft center. A radially extending linear protrusion is formed within each groove, and a radial distance is formed between the end of the linear protrusion near the shaft center and the tip of the groove.
[0011] The groove tips on the pivot end cover and the stator body are both formed as open structures. In contrast, the groove tips on the rotor are formed as closed structures. At the same time, the grooves on the two end faces of the rotor are symmetrically arranged and have through holes at their tips.
[0012] Optionally, the groove is in the shape of an isosceles triangle, and the linear protrusions all extend from the center of the base of the isosceles triangle toward the tip, that is, along the height of the isosceles triangle.
[0013] Optionally, the lumen of the conveying pipe is connected to the feed shaft hole to form an L-shaped flow channel.
[0014] Optionally, the lumen of the conveying pipe extends vertically, and the extension direction of the lumen of the conveying pipe is perpendicular to the extension direction of the lumen of the column section.
[0015] Optionally, the pivot end cover and the stator body are fixedly connected together by multiple screw assemblies to form a whole.
[0016] Optionally, at least one pair of first ears facing each other in the diametrical direction are formed on the pivot end cap. The first ears (22) are U-shaped and have through-hole structures that are relatively through each other on the two flange plates. Second ears that correspond one-to-one with the first ears are formed on the stator body. The second ears (311) are U-shaped. The U-shaped slots on both ears extend radially;
[0017] Each screw assembly corresponds to a first lug and includes a screw body with an end ring at one end, a pin, and a nut. The end ring is located between the two flanges of the first lug and is fixedly connected to the first lug via the pin. Specifically, both ends of the pin extend into through-holes on the two flanges, passing through the end ring. The free end of the screw body passes through the U-shaped slot of the second lug and mates with the nut, thus axially pressing the pivot end cap and stator body together.
[0018] Optionally, a funnel-shaped or gourd-shaped hopper is provided at the upper end of the conveying pipe, so that the hopper cavity is connected to the conveying pipe cavity in the vertical direction.
[0019] Optionally, a connecting pipe is provided at the port of the column section, and a three-way valve is provided at the free end of the connecting pipe. A circulation pipe is provided at the upward-facing port of the three-way valve, and the upper port of the circulation pipe extends into the hopper cavity.
[0020] The beneficial effects of this invention are: the invention improves the structure of the grinding cavity, which can increase the self-suction force of the grinding cavity, improve the emulsification effect, and reduce the amount of foam generated. Attached Figure Description
[0021] Figure 1 , Figure 2 The above are schematic diagrams of the overall structure of this utility model from different isometric perspectives.
[0022] Figure 3 , Figure 4 This is a schematic diagram of the docking end cap structure from different viewing angles.
[0023] Figures 5 to 7 This is a schematic diagram of the stator end cover from different viewing angles.
[0024] Figure 8 This is a schematic diagram of the rotor.
[0025] Figure 9 This is a schematic diagram of the structure when the rotor is assembled in the cavity of the stator end cover.
[0026] Figure 10 This is a schematic diagram of the structure when the end cap and stator end cap are fastened together.
[0027] Figure 11 This is a schematic diagram of the structure when the drive motor, docking end cover, and stator end cover are assembled together.
[0028] Figure 12 This is a rendering of the overall design of this utility model.
[0029] Figure 13 This is a rendering (grayscale) schematic diagram of the docking end cap.
[0030] Figure 14 This is a rendering (grayscale) schematic diagram of the stator end cover.
[0031] Figure 15 This is a rendering (grayscale) diagram of the rotor.
[0032] In the diagram: 10 Drive motor, 11 Frame; 20 Pivot end cover, 21 Flange, 22 First ear, 23 Inner bottom surface, 231 Type I slot, 232 Linear protrusion I, 24 Annular slot I, 25 Port recess; 30 Stator end cover, 31 Stator body, 311 Second ear, 312 Cover cavity, 3121 Type II slot, 3122 Linear protrusion II, 313 Annular slot II, 3131 Through hole, 314 Feed shaft hole, 32 Conveyor pipe, 321 Column tube section, 33 Hopper, 34 Connecting pipe, 35 Three-way valve, 36 Circulation pipe; 40 Rotor, 41 Type III slot, 42 Linear protrusion III, 43 Through hole section, 44 Axial flange; 50 Screw assembly, 51 Screw body, 511 End ring, 52 Pin, 53 Nut. Detailed Implementation
[0033] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0034] like Figures 1 to 15 The emulsified asphalt testing machine shown includes a grinding body matched with a drive motor 10. The drive motor 10 is fixedly mounted on a frame 11, and four caster assemblies are fixedly mounted on the frame 11. The caster assemblies have a locking structure, allowing the testing machine to switch between a moving state and a stationary state.
[0035] The grinding body includes at least a pivot end cover 20, a stator end cover 30, and a rotor 40, all of which are disc-shaped.
[0036] like Figures 1 to 4As shown, the pivot end cover 20 has a disc-shaped body. A flange 21 is provided on the end of the pivot end cover 20 opposite to the stator end cover 30. The pivot end cover 20 is fixedly connected to the drive motor 10 by means of the flange 21. At the same time, the pivot end cover 20 has a shaft hole structure that matches the rotating shaft of the drive motor 10, so that the rotating shaft of the drive motor 10 can extend into the pivot end cover 20 through the shaft hole structure to match the rotor 40, thereby driving the rotor 40 to rotate simultaneously relative to the pivot end cover 20 and the stator end cover 30. A port groove 25 is formed at the port of the pivot end cover 20, and an annular groove 24 is formed on its inner bottom surface 23. The annular port of the annular groove 24 is recessed inward relative to the bottom surface of the port groove 25 (in the axial direction), that is, the inner bottom surface 23 is recessed inward relative to the bottom surface of the port groove 25.
[0037] like Figures 1 to 2 , Figures 5 to 7 As shown, the stator end cover 30 includes a disc-shaped stator body 31 and a feed pipe 32 fixedly disposed on the closed end side of the stator body 31.
[0038] A feed shaft hole 314 is formed at the center of the cover cavity 312 of the stator body 31, and an annular groove 313 is formed at the edge, with the annular port of the annular groove 313 positioned outward relative to the (inner) bottom surface of the cover cavity 312. This can be understood as follows: an annular axial flange is formed on the bottom surface of the cover cavity 312 near the edge, and the annular groove 313 is formed between the inner circumferential surface of the cover cavity 312 and the outer circumferential surface of the axial flange. The axial depth of the cover cavity 312 should be sufficient to accommodate the thickness of the rotor 40. The port side of the stator body 31 extends into the port recess 25, and the stator end cap 30 is inserted into the pivot end cap 20, ensuring a stable and reliable fixed connection between the two. The outer diameter of the port side of the stator body 31 can be made to match the inner diameter of the port recess 25.
[0039] The lower end of the lumen of the conveying pipe 32 is connected to the feed shaft hole 314, and the two can be joined to form an L-shaped flow channel. Simultaneously, a column section 321 is formed at the lower part of the conveying pipe 32. The lumen of the column section 321 is not connected to the lumen of the conveying pipe 32, and the axes of the two lumens extend perpendicularly to each other. A through hole 3131, which communicates with the lumen of the column section 321, is formed on the inner bottom surface of the annular groove 313.
[0040] like Figure 9As shown, the rotor 40 is disposed in the cover cavity 312 of the stator body 31, and one end of the rotor 40 facing the inner bottom surface 23 of the pivot end cover 20 is approximately flush with the bottom surface of the cover cavity 312. An axial flange 44 is formed on the end face of the rotor 40 facing the pivot end cover 20, thereby forming an axial gap between the opposing surfaces of the rotor 40 and the pivot end cover 20.
[0041] like Figure 10 , Figure 11 As shown, the end cap opening of the pivot end cap 20 is engaged and fixedly connected to the end cap opening of the stator body 31. This causes the annular groove opening of the first annular groove 24 and the annular groove opening of the second annular groove 313 to form a drainage channel in the axial direction, increasing the cross-section of the annular flow channel, ensuring sufficient flow cross-section in the circumferential flow channel, and creating sufficient negative pressure.
[0042] like Figures 3 to 9 As shown, multiple grooves are arranged in alternating circumferential patterns on the inner bottom surface 23 of the pivot end cover 20, on the inner side of the annular groove 24, on the bottom surface of the cover cavity 312 of the stator body 31, and on the two end faces of the rotor 40, namely groove 213, groove 3121 and groove 41.
[0043] The grooves (i.e., groove 213, groove 3121, and groove 41) are all isosceles triangular with their tips close to the axis. Each groove contains a radially extending linear protrusion, with a radial distance between the end of the linear protrusion near the axis and the tip of the groove. The tips of groove 231 on the pivot end cover 20 and groove 3121 on the stator body 31 are both open (structures). This allows the tip of groove 231 to communicate with one end of the shaft hole structure, and the tip of groove 3121 to communicate with the feed shaft hole 314, forming a flow channel structure for the emulsified asphalt to flow radially. Grooves 41 are symmetrically arranged on the two end faces of the rotor 40, and each groove 41 has a through hole 43 at its tip.
[0044] Emulsified asphalt is fed into the grinding chamber through the upper port of the conveying pipe 32, entering the feed shaft hole 314 of the stator end cover 30, and flowing into the grinding chamber. Within the grinding chamber, it flows from the stator end cover 30 side to the pivot end cover 20 side via the through hole 43 on the rotor 40, and then converges into the annular groove 313. During this process, the high-speed rotation of the rotor 40 causes the emulsified asphalt to flow radially outward. Combined with the annular groove 24 and the annular groove 313 forming a drainage channel, the circumferential flow pressure of the emulsified asphalt is significantly increased, creating a vacuum zone at the center. This enhances the self-suction force of the grinding chamber and generates a strong pushing force to promote the flow of the emulsified asphalt. This improves the circulation and flow effect of the emulsified asphalt between the hopper 33 and the grinding chamber, contributing to a better emulsification effect. The groove 231 and linear protrusion 232 on the pivot end cover 20, the groove 3121 and linear protrusion 3122 on the stator body 31, and the groove 41 and linear protrusion 42 on the end faces of the rotor 40 can form a dispersion channel and a shearing structure, allowing the emulsified asphalt to be sheared on both sides. The radially involute grooves formed on both sides can increase the vacuum space of the grinding chamber, thereby enhancing the self-suction force. Simultaneously, they can create sufficient emulsification space in the grinding chamber, fully drawing asphalt and soap solution into the grinding chamber and subjecting them to sufficient shearing, thus improving the emulsification effect and reducing foam generation. Furthermore, this helps to ensure that the experimentally obtained process and product performance parameters better guide the large-scale production of emulsified asphalt.
[0045] like Figure 11 As shown, a pair of first ears 22 facing each other in the diametrical direction are formed on the pivot end cap 20. Each first ear 22 is U-shaped and has (top-bottom) through-hole structures formed on its two edge plates. Correspondingly, a second ear 311 is formed on the stator body 31, corresponding to and matching the first ears 22. The second ear 311 is U-shaped. The U-shaped slots on both ears extend radially.
[0046] The screw assembly 50 corresponds to the first ear portion 22 one by one, and each includes a screw body 51 with an end ring portion 511 formed at one end, as well as a pin 52 and a nut 53.
[0047] The end ring portion 511 is correspondingly disposed between the two edge plates of the first ear portion 22, and can be fixedly connected to the first ear portion 22 via the pin 52. That is, the two ends of the pin 52 extend into the through hole structure provided on the two edge plates, and the middle extends into the end ring portion 511.
[0048] The free end (axially) of the screw body 51 passes through the U-shaped slot of the second lug 311 and mates with the nut 53. Tightening the nut 53 can push and pull the screw body 51 and axially press the pivot end cap 20 and the stator body 31 together, so that their opposite ends are tightly pressed together.
[0049] like Figures 1 to 2 , Figure 12 As shown, a funnel-shaped / gourd-shaped hopper 33 is provided at the upper end of the conveying pipe 32, so that the cavity of the hopper 33 is vertically connected to the cavity of the conveying pipe 32. The gourd-shaped hopper 33 at the pipe end of the conveying pipe 32 can generate a circulating vortex, which is more conducive to the mixing of soap solution and asphalt and can ensure the smoothness of material discharge.
[0050] A connecting pipe 34 is provided at the port of the column tube section 321, and a three-way valve 35 is provided at the free end of the connecting pipe 34. A circulation pipe 36 is provided at the upward-facing port of the three-way valve 35, and the upper port of the circulation pipe 36 extends into the hopper cavity of the hopper 33, so that the emulsified asphalt can circulate between the grinding cavity and the hopper 33 through the guide hole 3131, thereby improving the emulsification effect. The downward-facing valve port of the three-way valve 35 is used to discharge the emulsified asphalt.
[0051] Compared to existing technologies, the grinding chamber of this application adopts a double-sided toothed shape and is equipped with an annular drainage groove, giving it a large self-suction force and high head. Simultaneously, the toothed groove structure adopts a progressive design, resulting in a large self-suction force. Through the shearing / grinding action of the double-end faces, the emulsification effect is improved, foam generation is reduced, and the relative stability of the self-suction force is ensured. A gourd-shaped hopper 33 is provided at the outlet of the circulation pipe 36, which generates a circulating vortex, further facilitating the mixing of soap solution and asphalt. Under the action of strong self-suction, the poured asphalt and soap solution are quickly and thoroughly circulated into the mill for emulsification.
[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. An emulsified asphalt testing machine, comprising a grinding body matched with a drive motor (10); characterized in that: The grinding body includes a pivot end cover (20), a stator end cover (30), and a rotor (40); The pivot end cover (20) is fixedly connected to the drive motor (10) and has a shaft hole structure that matches the shaft of the drive motor (10), so that the shaft of the drive motor (10) can extend into the pivot end cover (20) through the shaft hole structure to match the rotor (40); an annular groove (24) is formed on the inner bottom surface (23) of the pivot end cover (20). The stator end cover (30) includes a stator body (31) and a feed pipe (32) fixedly disposed on the closed end side of the stator body (31). A feed shaft hole (314) is formed at the center of the cover cavity (312) of the stator body (31), and an annular groove (313) is formed at the edge, so that the annular port of the annular groove (313) is outward relative to the bottom surface of the cover cavity (312); the rotor (40) is disposed in the cover cavity (312); The lower end of the lumen of the conveying pipe (32) is connected to the feed shaft hole (314); a column section (321) is formed in the lower part of the conveying pipe (32); a through hole (3131) that can communicate with the lumen of the column section (321) is formed on the bottom surface of the annular groove (313). The end cap opening of the pivot end cap (20) is engaged and fixedly connected with the end cap opening of the stator body (31), so that the annular groove opening of the first annular groove (24) is aligned with the annular groove opening of the second annular groove (313). Multiple shaped grooves are arranged alternately around the circumference on the inner bottom surface (23) of the pivot end cover (20), on the inner side of the annular groove (24), on the bottom surface of the cover cavity (312), and on the two end faces of the rotor (40); the shaped grooves are triangular and the tips are close to the axis; each shaped groove has a radially extending linear protrusion, and a radial distance is formed between the end of the linear protrusion close to the axis and the tip of the shaped groove; The groove tip on the pivot end cover (20) and the groove tip on the stator body (31) are both formed as open openings; The grooves on the two end faces of the rotor (40) are arranged symmetrically and a through hole (43) is formed at the tip.
2. The emulsified asphalt testing machine according to claim 1, characterized in that: The groove is in the shape of an isosceles triangle, and the linear protrusions all extend from the center of the base of the isosceles triangle toward the tip.
3. The emulsified asphalt testing machine according to claim 1, characterized in that: The lumen of the conveying pipe (32) is connected to the feed shaft hole (314) to form an L-shaped flow channel.
4. The emulsified asphalt testing machine according to claim 1, characterized in that: The lumen of the conveying pipe (32) extends vertically, and the extension direction of the lumen of the conveying pipe (32) is perpendicular to the extension direction of the lumen of the column section.
5. The emulsified asphalt testing machine according to claim 1, characterized in that: The pivot end cover (20) and the stator body (31) are fixedly connected together by multiple screw groups (50) to form a whole.
6. The emulsified asphalt testing machine according to claim 5, characterized in that: At least one pair of first ears (22) opposite each other in the diameter direction are formed on the pivot end cap (20); the first ears (22) are U-shaped and have through holes formed on their two edge plates; a second ear (311) corresponding to the first ears (22) is formed on the stator body (31); the second ear (311) is U-shaped; The screw assembly (50) and the first ear (22) are matched one-to-one, and each includes a screw body (51) with an end ring (511) formed at one end, as well as a pin (52) and a nut (53). The end ring (511) is correspondingly disposed between the flanges of the first ear (22) and is fixedly connected to the first ear (22) via a pin (52); the free end of the screw body (51) passes through the U-shaped groove of the second ear (311) and matches with the nut (53), which can press the pivot end cover (20) and the stator body (31) in the axial direction.
7. The emulsified asphalt testing machine according to claim 1, characterized in that: A funnel-shaped or gourd-shaped hopper (33) is provided at the upper end of the conveying pipe (32), so that the hopper cavity of the hopper (33) is connected to the cavity of the conveying pipe (32) in the vertical direction.
8. The emulsified asphalt testing machine according to claim 7, characterized in that: A connecting pipe (34) is provided at the port of the column section (321), and a three-way valve (35) is provided at the free end of the connecting pipe (34); a circulation pipe (36) is provided at the port of the three-way valve (35) facing upward, and the upper port of the circulation pipe (36) extends into the hopper cavity of the hopper (33).