Circulating defoaming equipment for asphalt sizing material

Abstract

The utility model discloses asphalt sizing material circulating defoaming equipment, which belongs to the technical field of asphalt defoaming and comprises a rack, a flow guide bin, a first material roller, a second material roller and a material storage pool, the first material roller and the second material roller are rotatably connected onto the rack, the flow guide bin is arranged on one side of the first material roller and one side of the second material roller, and the material storage pool is arranged on the rack. The material storage pool is arranged on the other side of the first material roller and the other side of the second material roller, the first material roller and the second material roller are oppositely arranged, a gap for extruding asphalt is formed between the first material roller and the second material roller, bubbles in asphalt sizing materials are broken through rolling, and the purpose of removing the bubbles is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt defoaming, in particular to asphalt rubber material circulation defoaming equipment. Background Art

[0002] During the preparation process of asphalt rubber, it is transported by pumping. It is inevitable that air will be mixed into the asphalt during the transportation process, and when the rubber enters the mixing tank, there will be impact and bubbles will be generated. In addition, the high-speed stirring shaft will generate bubbles during the stirring process. Even after a long period of stirring, the bubbles in the asphalt rubber will be eliminated by the up and down circulation of the rubber in the mixing tank. Due to the high viscosity of the asphalt rubber and the requirements of the process time, the bubbles in the asphalt cannot be completely eliminated. What's more, some raw materials contain a certain amount of moisture. When the asphalt is heated, the moisture evaporates instantly at high temperature and forms bubbles mixed in the rubber. When the asphalt rubber with bubbles is formed, holes will be formed on the surface of the material, resulting in surface quality defects of the material. Now a device that can eliminate bubbles in asphalt rubber is needed to solve this problem.

[0003] The existing patent application with publication number CN107116739A discloses a self-adhesive modified asphalt coil forming unit, which is composed of an active roller 1 and a cooling water pool 4, wherein the cooling water pool 4 is located below the active roller 1, and the lower part of the active roller 1 is immersed in the cooling water pool 4; a heating drive steel roller 2 and a guide roller 6 are arranged on the upper part of the active roller 1, a self-adhesive asphalt pool 11 is arranged next to the active roller 1, and a self-adhesive modified asphalt 8 is filled in the self-adhesive asphalt pool 11, and the lower part of the heating drive steel roller 2 is immersed in the self-adhesive asphalt pool 11; the upper side of the active roller 1 is in contact with the cooling drive steel roller 3, and the middle side of the active roller 1 is provided with a guide roller 5 that cooperates with the heating drive steel roller 2; self-adhesive modified asphalt 8 is accumulated between the active roller 1 and the cooling drive steel roller 3, and the asphalt coil forming unit eliminates bubbles in the asphalt rubber only by roller extrusion, and the bubble removal rate is small. Utility Model Content

[0004] The utility model aims to provide an asphalt rubber circulating degassing device, which solves the problem that bubbles in the existing asphalt rubber are difficult to eliminate.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0006] A circulating defoaming device for asphalt rubber comprises a frame, a guide bin, a first material roller, a second material roller and a material storage tank, wherein the first material roller and the second material roller are rotatably connected to the frame, the guide bin is arranged on one side of the first material roller and the second material roller, and the material storage tank is arranged on the other side of the first material roller and the second material roller, the first material roller and the second material roller are arranged opposite to each other, and a gap for squeezing asphalt is formed between the first material roller and the second material roller, and bubbles in the asphalt rubber are squeezed and broken by rolling, so as to achieve the purpose of removing bubbles.

[0007] Furthermore, the guide bin includes a guide section and a connecting section, the guide section is connected to the connecting section, the guide section is arranged to be inclined with the horizontal plane, and guides the asphalt toward the direction of the second material roller, the connecting section is arranged below the lowest point of the first material roller, and part of the connecting section is in contact with the lowest point of the first material roller, and gravity is used to increase the speed of the asphalt rubber, and the asphalt rubber is attached to the material roller through the connecting section.

[0008] Preferably, the guide bin further includes a heating device, which is disposed on the lower side of the guide bin and is used to heat the asphalt rubber, thereby improving the fluidity of the asphalt rubber and making it easier to discharge bubbles.

[0009] Furthermore, it also includes a first scraper and a second scraper, wherein the first scraper is arranged on one side of the first material roller, and the second scraper is arranged on one side of the second material roller, and is used for scraping off the asphalt rubber in a constant thickness.

[0010] Preferably, it also includes a first extrusion belt, which is arranged on the inner bottom wall of the guide bin and squeezes the asphalt rubber along the cross-sectional direction to remove bubbles.

[0011] Preferably, the first extrusion belt is arranged along the axial direction of the first material roller, and the cross-section of the first extrusion belt is triangular, with a simple structure.

[0012] Furthermore, it also includes a second extrusion belt, which is arranged on the inner bottom wall of the guide bin along the flow direction of the asphalt rubber and squeezes and breaks the bubbles in the asphalt rubber along the plane direction.

[0013] Preferably, the longitudinal section of the second extruded belt is shuttle-shaped, which has little obstruction to the asphalt rubber.

[0014] Preferably, along the incoming direction of the asphalt, the second extrusion belt is arranged in front of the first extrusion belt to reduce the impact on the flow speed of the asphalt rubber.

[0015] Preferably, it also includes a circulation system, which is arranged on one side of the frame. The circulation system includes a circulation pump and a conveying pipeline. The feed end of the circulation pump is connected to the storage tank, the discharge end of the circulation pump is connected to one end of the conveying pipeline, and the other end of the conveying pipeline is arranged in the diversion bin, which is used to circulate and remove bubbles in the asphalt rubber, and discharge the asphalt rubber that has been debubbled to the outside.

[0016] The beneficial effects of the utility model are:

[0017] The asphalt rubber circulation defoaming equipment eliminates the leaching bubbles through four defoaming actions in the asphalt circulation flow. First, the asphalt is transported from the storage tank to the top of the diversion bin through the conveying pipeline by the circulation pump. The asphalt rubber falls from top to bottom onto the heated bottom wall of the diversion bin. It will spread out under the impact and tear off some bubbles in the asphalt rubber. Second, there are the first extrusion belt and the second extrusion belt on the bottom wall of the diversion bin. The asphalt passes through the first extrusion belt and the second extrusion belt along the bottom wall of the diversion bin. The second extrusion belt applies extrusion to the asphalt rubber in the longitudinal direction to eliminate some bubbles. When passing through the second extrusion belt, a horizontal extrusion belt is applied to the asphalt rubber. The first roller and the second roller are respectively provided with a first material roller and a second material roller, and the first material roller and the second material roller are respectively provided with a first material roller and a second material roller. The first material roller and the second material roller are respectively provided with a first material roller and a second material roller. The first material roller and the second material roller are respectively provided with a second ... BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Axonometric diagram of the asphalt rubber circulation degassing equipment provided by the utility model;

[0019] Figure 2 A front view of the asphalt rubber circulation defoaming device provided by the utility model;

[0020] Figure 3 A side view of the asphalt rubber circulation defoaming equipment provided by the utility model;

[0021] Figure 4 A top view of the asphalt rubber circulation defoaming device provided by the utility model;

[0022] Figure 5 for Figure 3 Section view along line AA;

[0023] Figure 6 for Figure 5 A partial enlarged view of the upper part B;

[0024] Figure 7 This is a structural diagram of the second extrusion belt provided in Example 2.

[0025] Reference numerals:

[0026] 1. Frame; 2. Second material roller; 3. First material roller; 4. Guide bin; 41. Guide section; 42. Combination section; 43. Heating device; 5. First extrusion belt; 6. First scraper; 7. Second scraper; 8. Material storage tank; 9. Circulation system; 91. Circulation pump; 92. Conveying pipeline; 10. Second extrusion belt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] like Figure 1-Figure 6 As shown, the present embodiment discloses an asphalt rubber circulating defoaming equipment, including a frame 1, a guide bin 4, a first material roller 3, a second material roller 2 and a storage tank 8, the first material roller 3 and the second material roller 2 are rotatably connected to the frame 1, the guide bin 4 is arranged on one side of the first material roller 3 and the second material roller 2, the storage tank 8 is arranged on the other side of the first material roller 3 and the second material roller 2, the first material roller 3 and the second material roller 2 are arranged opposite to each other, and a gap for extruding asphalt is formed between the first material roller 3 and the second material roller 2, the external asphalt rubber enters through the guide bin 4, and the guide bin 4 guides the asphalt rubber to enter the gap between the first material roller 3 and the second material roller 2, and the bubbles in the asphalt rubber are squeezed out by rolling to achieve the purpose of defoaming.

[0030] Furthermore, the guide bin 4 includes a drainage section 41 and a connecting section 42. The drainage section 41 is connected to the connecting section 42. The drainage section 41 is arranged to be inclined with the horizontal plane to guide the asphalt toward the second material roller 2. The asphalt rubber moves forward under the action of gravity and its own impulse. The connecting section 42 is arranged below the lowest point of the first material roller 3, and part of the connecting section 42 is in contact with the lowest point of the first material roller 3. The asphalt rubber is attached to the second material roller 2 by the connecting section 42.

[0031] Preferably, the guide bin 4 also includes a heating device 43, which is arranged on the lower side of the guide bin 4. The heating device 43 is an electric heating element, which heats the bottom wall of the guide bin 4 to heat the asphalt rubber passing through, thereby preventing the asphalt rubber from being too low in temperature and causing insufficient fluidity. Improving the fluidity of the asphalt rubber helps to eliminate bubbles.

[0032] Furthermore, it also includes a first scraper 6 and a second scraper 7. The first scraper 6 is arranged on one side of the first material roller 3, and the second scraper 7 is arranged on one side of the second material roller 2. The first scraper 6 and the second scraper 7 can be rotated to adjust the distance between the scraper and the material roller to control the thickness of the scraped asphalt rubber. Selecting a suitable scraping thickness can achieve a balance between efficiency and defoaming rate.

[0033] Furthermore, it also includes a first extrusion belt 5, which is arranged on the inner bottom wall of the guide chamber 4. The first extrusion belt 5 is arranged across the guide chamber 4. When the asphalt rubber climbs over the first extrusion belt 5, the asphalt rubber will be affected by gravity and upward impulse. The two forces are in opposite directions and can fully act on the bubbles in the asphalt rubber, so that the bubbles are squeezed in both directions and burst. The asphalt rubber encounters little resistance when passing through the first extrusion belt 5, and the flow efficiency of the asphalt is high.

[0034] Preferably, the first extrusion belt 5 is axially arranged along the first material roller 3, and the cross section of the first extrusion belt 5 is triangular. A plurality of first extrusion belts 5 can be sequentially arranged at intervals on the drainage section 41 to achieve multiple debubbling effects.

[0035] Preferably, it also includes a circulation system 9, which is arranged on one side of the frame 1. The circulation system 9 includes a circulation pump 91 and a conveying pipe 92. The feed end of the circulation pump 91 is connected to the storage tank 8, and the discharge end of the circulation pump 91 is connected to one end of the conveying pipe 92. The other end of the conveying pipe 92 is arranged in the diversion bin 4, which is used to return the asphalt rubber that has completed a debubbling cycle to the diversion bin 4 for debubbling again. The circulation pump 91 can also convey the debubbled asphalt rubber to the outside.

[0036] The working process of the asphalt rubber circulation defoaming equipment is as follows:

[0037] The asphalt rubber enters the diversion bin 4, and the asphalt rubber falling from a height hits the bottom wall of the diversion bin 4 and moves forward along the diversion section 41. The asphalt rubber flips up the first extrusion belt 5 and slows down. The bubbles in the asphalt rubber are squeezed and burst, and then the asphalt rubber enters the bonding section 42. The asphalt rubber adheres to the first material roller 3, and the first scraper 6 flattens the asphalt rubber on the first material roller 3. The first material roller 3 and the second material roller 2 rotate in opposite directions to squeeze and defoam the asphalt rubber. The asphalt rubber is transferred from the first material roller 3 to the second material roller 2, and enters the storage tank 8 from the second material roller 2. The asphalt rubber in the storage tank 8 is then drawn out by the circulating pump 91 and transported to the diversion bin 4 through the conveying pipe 92, and the asphalt rubber is defoamed again to achieve multiple cycles of defoaming process.

[0038] Embodiment 2

[0039] like Figure 7 As shown, this embodiment also discloses an asphalt rubber circulation defoaming device, including a second extrusion belt 10, which is arranged on the inner bottom wall of the guide bin 4 along the flow direction of the asphalt rubber. The second extrusion belt 10 extrude the asphalt rubber in the horizontal direction, thereby improving the defoaming rate of the asphalt rubber.

[0040] Furthermore, the longitudinal section of the second extrusion belt 10 is shuttle-shaped, and multiple second extrusion belts 10 are arranged in sequence at intervals. When the asphalt rubber passes through the second extrusion belt 10, it is squeezed along a direction parallel to the bottom surface of the guide chamber 4, so that the bubbles in the asphalt rubber are burst by the pressure on both sides.

[0041] Preferably, along the incoming direction of the asphalt, the second extrusion belt 10 is arranged in front of the first extrusion belt 5, and the flow direction of the second extrusion belt 10 is the same as that of the asphalt rubber, thereby reducing the obstruction to the flow speed of the asphalt rubber.

[0042] According to the disclosure and teaching of the above description, the technical personnel in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes of the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An asphalt rubber circulation defoaming device, comprising a frame (1), a guide bin (4), a first material roller (3), a second material roller (2) and a material storage tank (8), wherein the first material roller (3) and the second material roller (2) are rotatably connected to the frame (1), the guide bin (4) is arranged on one side of the first material roller (3) and the second material roller (2), and the material storage tank (8) is arranged on the other side of the first material roller (3) and the second material roller (2), characterized in that: The first material roller (3) and the second material roller (2) are arranged opposite to each other, and a gap for squeezing asphalt is formed between the first material roller (3) and the second material roller (2).

2. The asphalt rubber circulation defoaming equipment according to claim 1 is characterized in that: The guide bin (4) comprises a guide section (41) and a connecting section (42); the guide section (41) is connected to the connecting section (42); the guide section (41) is arranged to be inclined with respect to a horizontal plane so as to guide the asphalt toward the second material roller (2); the connecting section (42) is arranged below the lowest point of the first material roller (3), and a portion of the connecting section (42) is in contact with the lowest point of the first material roller (3).

3. The asphalt rubber circulation defoaming equipment according to claim 2 is characterized in that: The guide bin (4) further comprises a heating device (43), wherein the heating device (43) is arranged on the lower side of the guide bin (4).

4. The asphalt rubber circulation defoaming equipment according to claim 2 is characterized in that: It also comprises a first scraper (6) and a second scraper (7), wherein the first scraper (6) is arranged on one side of the first material roller (3), and the second scraper (7) is arranged on one side of the second material roller (2).

5. The asphalt rubber circulation defoaming equipment according to any one of claims 1 to 4, characterized in that: It also comprises a first extrusion belt (5), wherein the first extrusion belt (5) is arranged on the inner bottom wall of the guide bin (4).

6. The asphalt rubber circulation defoaming equipment according to claim 5 is characterized in that: The first extrusion belt (5) is arranged axially along the first material roller (3), and the cross section of the first extrusion belt (5) is triangular.

7. The asphalt rubber circulation defoaming equipment according to claim 5 is characterized by: It also comprises a second extrusion belt (10), wherein the second extrusion belt (10) is arranged on the inner bottom wall of the guide bin (4) along the flow direction of the asphalt rubber.

8. The asphalt rubber circulation defoaming equipment according to claim 7 is characterized in that: The longitudinal section of the second extruded belt (10) is shuttle-shaped.

9. The asphalt rubber circulation defoaming equipment according to claim 7, characterized in that: Along the direction of incoming asphalt, the second extrusion belt (10) is arranged in front of the first extrusion belt (5).

10. The asphalt rubber circulation defoaming equipment according to claim 1, characterized in that: The machine also includes a circulation system (9), wherein the circulation system (9) is arranged on one side of the frame (1), and the circulation system (9) includes a circulation pump (91) and a conveying pipeline (92), wherein the feeding end of the circulation pump (91) is connected to the material storage tank (8), the discharging end of the circulation pump (91) is connected to one end of the conveying pipeline (92), and the other end of the conveying pipeline (92) is arranged in the guide bin (4).

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