Mixing device for foamed asphalt cold recycled mixture
By designing a mixing device for the foamed asphalt cold regeneration mixture, the blanking holes and pushing components are used to avoid asphalt clumping, and the auxiliary mixing of curved plates and conical spines is solved, and the mixing quality and uniformity are improved.
Patent Information
- Application Number
- CN202422190343.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-06
AI Technical Summary
After the asphalt foams, due to changes in shape and decrease in temperature, it is easy to form agglomeration, which affects the subsequent remix with the asphalt, and cannot guarantee the quality of the finished product.
A mixing device for foam asphalt cold regeneration mixture is designed, including a foam box and a mixing box. The foamed asphalt falls through the blanking holes and pushing components to avoid clumping, and to ensure uniform mixing through auxiliary mixing of curved plates and conical spines.
It effectively avoids asphalt clumping, improves the subsequent mixing quality and uniformity, and ensures the finished product quality of the asphalt pavement.
Smart Images
Figure CN222990525U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of asphalt processing, in particular to a mixing device for foamed asphalt cold recycled mixture. Background Technique
[0002] The foamed asphalt cold recycling technology is to recycle the recycled asphalt pavement materials and cement stabilized base materials. It can not only give full play to the residual value of the old asphalt mixture, promote the recycling of old pavement materials, protect the ecological environment and reduce resource waste. At the same time, it also converts the semi-rigid pavement structure into a semi-flexible structure, extending the service life of road asphalt.
[0003] During the mixing process of the mixture, if the coarse aggregate is relatively concentrated, the hazards of potholes and water damage on the asphalt pavement will increase. If the fine aggregate is relatively concentrated, the asphalt content is too much and the void ratio is too small, which will lead to the permanent deformation of the pavement. Therefore, the uniformity of the mixture determines the quality and service life of the asphalt pavement.
[0004] Foamed asphalt is to make cold water contact with asphalt. The cold water is preheated and vaporizes extremely rapidly, and then mixed with asphalt, which makes the surface area of asphalt increase in a large proportion. In this process, due to the change of the form of foamed asphalt at this time and the decrease of temperature, small agglomerations are likely to occur, affecting the subsequent mixing with asphalt again, and the quality of the finished product cannot be guaranteed, so there is room for improvement. Content of the Utility Model
[0005] The utility model aims to solve the technical problem in the prior art that after asphalt is foamed, due to the change of form and the decrease of temperature, agglomerations are easily formed, affecting the subsequent quality, and provides a mixing device for foamed asphalt cold recycled mixture.
[0006] To solve the above technical problem, the technical solution provided by the utility model is as follows:
[0007] A mixing device for foamed asphalt cold recycled mixture, including a foaming box and a mixing box. One side of the foaming box is connected with a compressed air pipe, and the other side is connected with a cold water pipe. The foaming box is provided with a feed inlet, and a cover plate is arranged on the feed inlet. The lower end of the foaming box is provided with a bottom plate, and a plurality of blanking holes are arranged on the bottom plate. A pushing component is arranged in the foaming box. A heat preservation board is arranged on the inner side of the foaming box.
[0008] The upper end of the mixing box is a hollow cylinder, and the lower end is a hemispherical shape. An auxiliary mixing component is arranged in the mixing box. The auxiliary mixing component includes a motor two arranged at the rear of the mixing box. The output end of the motor two is provided with a rotating shaft, and the rotating shaft extends into the mixing box and is rotationally connected with its inner wall. A connecting plate is rotatably arranged on the outer side of the rotating shaft, and an arc-shaped plate is arranged below the connecting plate. The arc-shaped plate conforms to the shape of the inner bottom surface of the mixing box.
[0009] Preferably, a support plate is provided on one side of the mixing box, and a through hole capable of accommodating a cold water pipe is provided on the support plate.
[0010] Preferably, the pushing component includes a motor provided in the middle of the upper end of the foaming box. A rotating rod is provided at the output end of the motor. The lower end of the rotating rod is rotatably connected to the bottom plate. An installation sleeve is provided on the outer side of the rotating rod. Scrapers are provided on both sides of the installation sleeve. The scrapers are all C-shaped and the lower ends of them are all in contact with the bottom plate.
[0011] Preferably, a stabilizing frame is provided on the outer side of the mixing box.
[0012] Preferably, a plurality of conical thorns are provided at the lower end of the arc-shaped plate.
[0013] Preferably, a discharge pipe is provided at the lower end of the mixing box, and a valve is provided on the discharge pipe.
[0014] The advantages of the present utility model compared with the prior art are as follows:
[0015] Through a plurality of blanking holes and the pushing component, the foamed asphalt mixture can be pushed down from the blanking port, so that the agglomeration caused by temperature reduction cannot pass through the blanking port, thereby preventing agglomeration from appearing in the mixture and improving the subsequent mixing quality.
[0016] The mixture is lifted and then dropped by the rotating arc-shaped plate for sufficient mixing, avoiding the phenomena of omission and dead angle in the stirring structure, improving the mixing uniformity and the quality of the asphalt pavement. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present utility model.
[0018] Figure 2 is a sectional view of the present utility model.
[0019] Figure 3 is a schematic structural diagram of the pushing component of the present utility model.
[0020] Figure 4 is a schematic structural diagram of the auxiliary mixing component of the present utility model.
[0021] As shown in the figure: 1. Foaming box, 2. Mixing box, 3. Compressed air pipe, 4. Cold water pipe, 5. Support plate, 6. Feeding port, 7. Bottom plate, 8. Blanking hole, 9. Motor, 10. Rotating rod, 11. Installation sleeve, 12. Scraper, 13. Stabilizing frame, 14. Heat preservation board, 15. Rotating shaft, 16. Connecting plate, 17. Arc-shaped plate, 18. Conical thorn, 19. Discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The present utility model will be further described in detail below with reference to the drawings.
[0023] Example 1, in combination with the attached Figure 1 , a mixing device for foamed asphalt cold recycled mixture, comprising a foaming box 1 and a mixing box 2. One side of the foaming box 1 is connected with a compressed air pipe 3, and the other side is connected with a cold water pipe 4. One side of the mixing box 2 is provided with a support plate 5, and the support plate 5 is provided with a through hole capable of accommodating the cold water pipe 4; A stabilizing frame 13 is arranged outside the mixing box 2; Cold water enters the foaming box 1 from the cold water pipe 4, and compressed air enters, causing bubbles to be generated in the asphalt to form foamed asphalt.
[0024] In combination with the attached Figure 1-2 , the foaming box 1 is provided with a feed inlet 6, and the feed inlet 6 is provided with a cover plate, which is convenient for adding asphalt; The lower end of the foaming box 1 is provided with a bottom plate 7, and the bottom plate 7 is provided with a plurality of blanking holes 8. The foamed asphalt falls into the mixing box 2 through the blanking holes 8.
[0025] In combination with the attached Figure 1-3 , a pushing component is arranged in the foaming box 1. The pushing component includes a motor 9 arranged in the middle of the upper surface of the foaming box 1. The output end of the motor 9 is provided with a rotating rod 10. The lower end of the rotating rod 10 is rotatably connected with the bottom plate 7. The outer side of the rotating rod 10 is provided with an installation sleeve 11. Scrapers 12 are arranged on both sides of the installation sleeve 11. The scrapers 12 are both C-shaped and the lower ends are both in contact with the bottom plate 7; Thus, the motor 9 drives the rotating rod 10 to rotate, and drives the scrapers 12 to rotate. During the rotation process, the scrapers 12 scrape the bottom plate 7 to assist the foamed asphalt to fall.
[0026] In combination with the attached Figure 2 , a heat preservation plate 14 is arranged inside the foaming box 1, which can reduce the cooling speed of the foaming box 1 due to the entry of cold water and reduce asphalt agglomeration.
[0027] In combination with the attached Figure 1 , 2 , 4, the upper end of the mixing box 2 is a hollow cylinder, and the lower end is a hemisphere; An auxiliary mixing component is arranged in the mixing box 2. The auxiliary mixing component includes a motor two arranged at the rear side of the mixing box 2. The output end of the motor two is provided with a rotating shaft 15. The rotating shaft 15 extends into the mixing box 2 and is rotatably connected with its inner wall. Thus, the rotating shaft 15 can rotate in the mixing box 2; A connecting plate 16 is rotatably arranged on the outer side of the rotating shaft 15. An arc-shaped plate 17 is arranged below the connecting plate 16. When the arc-shaped plate 17 rotates, it can lift the asphalt, so that the mixing is uniform and sufficient. A plurality of conical thorns 18 are arranged at the lower end of the arc-shaped plate 17, which can roll some fine agglomerates during the rotation process; The shape of the arc-shaped plate 17 conforms to the inner bottom surface of the mixing box 2.
[0028] In combination with the attached Figure 2 , the lower end of the mixing box 2 is provided with a discharge pipe 19, and a valve is arranged on the discharge pipe 19; It is convenient to export the mixed asphalt.
[0029] In the above embodiment, cold water enters the foaming box 1 from the cold water pipe 4, and compressed air enters, causing bubbles to be generated in the asphalt to form foamed asphalt; the foamed asphalt falls from the blanking hole 8, and the scraper 12 can provide assistance; the foamed asphalt enters the mixing box 2, and other mixtures can be added to the mixing box 2 as needed; the second motor drives the rotating shaft 15 to rotate, thereby indirectly driving the arc-shaped plate 17 to rotate to lift the asphalt, so that the mixing is uniform and sufficient. A number of conical thorns 18 are provided at the lower end of the arc-shaped plate 17, which can roll some finely crushed agglomerates during rotation; finally, it is led out through the discharge pipe 19.
[0030] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.
Claims
1. A mixing device for cold recycled foamed asphalt mixture, characterized in that: It comprises a foaming box (1) and a mixing box (2); one side of the foaming box (1) is connected to a compressed air pipe (3), and the other side is connected to a cold water pipe (4); the foaming box (1) is provided with a feed port (6), and the feed port (6) is provided with a cover plate; the lower end of the foaming box (1) is provided with a bottom plate (7), and the bottom plate (7) is provided with a plurality of drop holes (8); the foaming box (1) is provided with a pushing component; the inner side of the foaming box (1) is provided with a heat preservation plate (14); The upper end of the mixing box (2) is hollow cylindrical, and the lower end is hemispherical; an auxiliary mixing assembly is provided in the mixing box (2), and the auxiliary mixing assembly includes a second motor provided at the rear side of the mixing box (2), and a rotating shaft (15) is provided at the output end of the second motor, and the rotating shaft (15) extends into the mixing box (2) and is rotatably connected to the inner wall thereof; a connecting plate (16) is rotatably provided on the outer side of the rotating shaft (15), and an arc plate (17) is provided below the connecting plate (16); the arc plate (17) conforms to the shape of the inner bottom surface of the mixing box (2).
2. A mixing device for cold recycled foamed asphalt mixture according to claim 1, characterized in that: A support plate (5) is provided on one side of the mixing box (2), and a through hole capable of accommodating a cold water pipe (4) is provided on the support plate (5).
3. A mixing device for cold recycled foamed asphalt mixture according to claim 1, characterized in that: The pushing assembly comprises a motor (9) provided at the middle end of the foaming box (1); a rotating rod (10) is provided at the output end of the motor (9); the lower end of the rotating rod (10) is rotatably connected to the bottom plate (7); a mounting sleeve (11) is provided on the outer side of the rotating rod (10); scrapers (12) are provided on both sides of the mounting sleeve (11); the scrapers (12) are all C-shaped, and the lower ends of the scrapers are in contact with the bottom plate (7).
4. A mixing device for cold recycled foamed asphalt mixture according to claim 1, characterized in that: A stabilizing frame (13) is provided on the outside of the mixing box (2).
5. The mixing device for cold recycled foamed asphalt mixture according to claim 1, characterized in that: A plurality of conical thorns (18) are provided at the lower end of the arc-shaped plate (17).
6. A mixing device for cold recycled foamed asphalt mixture according to claim 1, characterized in that: A discharge pipe (19) is provided at the lower end of the mixing box (2), and a valve is provided on the discharge pipe (19).