Asphalt concrete screening and drying device

Abstract

The utility model relates to the technical field of asphalt concrete, concretely is a kind of asphalt concrete screening drying device, including vibrating screen box and the mixing barrel of being installed in the upper end of vibrating screen box, the side of vibrating screen box is provided with hot air blower, the hot air blower is connected with the mixing barrel and vibrating screen box by first air pipe and second air pipe and is communicated, screen plate is installed in vibrating screen box, and vibrating assembly is arranged in the lower end both sides of screen plate.The utility model solves the problem that existing drying device cannot carry out screening treatment in the process of sand drying, not only low drying efficiency, but also manual classification is needed in later period, which is not conducive to long-term use and popularization.

Description

Technical Field

[0001] This utility model relates to the field of asphalt concrete technology, specifically to an asphalt concrete screening and drying device. Background Technology

[0002] Asphalt concrete, commonly known as asphalt aggregate, is a mixture made by manually selecting aggregates with a specific gradation and mixing them with a certain proportion of road asphalt material under strictly controlled conditions. Before production, the aggregates need to be dried using a drying device to reduce moisture content and improve the quality of the final asphalt concrete. Additionally, because the aggregates have varying particle sizes after being removed from riverbeds, they require screening.

[0003] Existing drying equipment cannot perform screening during the sand and gravel drying process, resulting in low drying efficiency and the need for manual sorting later, which is not conducive to long-term use and promotion. Utility Model Content

[0004] The purpose of this utility model is to provide an asphalt concrete screening and drying device, which solves the problem that existing drying devices cannot perform screening during the sand and gravel drying process, resulting in low drying efficiency and the need for manual sorting in the later stage, which is not conducive to long-term use and promotion.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an asphalt concrete screening and drying device, comprising a vibrating screen box and a mixing tank installed on the upper end of the vibrating screen box, a hot air blower is provided on one side of the vibrating screen box, the hot air blower is connected to the mixing tank and the vibrating screen box through a first air supply pipe and a second air supply pipe, a screen plate is installed inside the vibrating screen box, and vibration components are provided on both sides of the lower end of the screen plate.

[0006] The above structural design combines the vibrating screen box and the mixing tank, and connects them via a hot air blower to form an integrated system. This allows for continuous screening and drying operations, improving production efficiency. The hot air blower delivers hot air to the mixing tank and the vibrating screen box through the first and second air ducts, respectively, enhancing drying efficiency while ensuring uniform heating of the material during mixing and screening.

[0007] Preferably, the vibration assembly includes a support seat fixedly connected to the inner side wall of the vibrating screen box, springs symmetrically fixedly connected to the support seat, a fixing plate fixedly connected to the upper end of the springs, a groove on the support seat, an eccentric shaft rotatably connected to the groove, a push-pull rod rotatably connected to the eccentric shaft, a hammer rod rotatably connected to the upper end of the push-pull rod, a limit cylinder fixedly connected to the lower end of the fixing plate, the hammer rod extending into the limit cylinder, and the fixing plate fixedly connected to the lower surface of the screen plate.

[0008] The above structural design, through the linkage of the eccentric shaft, push-pull rod, hammer rod and spring, generates high-frequency vibration, which improves the screening efficiency of sand and gravel by screening the generated vibration.

[0009] Preferably, the mixing tank has an inlet and an outlet at its upper and lower ends, respectively. A drive motor is installed at the upper end of the mixing tank, and the output end of the drive motor extends into the mixing tank and is fitted with a stirring rod.

[0010] With the above structural design, the drive motor drives the stirring rod to rotate, which rotates and flips the sand and gravel entering the mixing tank, making the sand and gravel heat up and dry more evenly.

[0011] Preferably, the vibrating screen box has a material guide port on its side wall, and the screen plate is placed at an angle with the lower end of the screen plate connected to the material guide port.

[0012] With the above structural design, the screen plate is placed at an angle, using gravity to accelerate the material movement towards the lower feed inlet. The lower end of the screen plate connects with the feed inlet, ensuring that the screened sand and gravel fall directly into the feed inlet, avoiding material retention or secondary accumulation, and improving process continuity.

[0013] Preferably, a collection box is provided at the lower end of the vibrating screen box, and the collection box can be pulled out from the vibrating screen box.

[0014] With the above structural design, the collection box can be pulled out, which makes it easy to quickly empty the sand and gravel after screening.

[0015] Preferably, the discharge port is located above the higher end of the sieve plate.

[0016] With the above structural design, the discharge port is located above the high end of the screen plate, allowing the sand and gravel to have a longer path to contact the hot air after falling into the vibrating screen box, thus enhancing the drying and screening effects.

[0017] Compared with the prior art, the beneficial effects of this utility model are: The vibrating screen box and mixing tank are combined and connected by a hot air blower to form an integrated system, enabling continuous screening and drying operations and improving production efficiency. The hot air blower delivers hot air to the mixing tank and vibrating screen box through the first and second air ducts respectively, improving drying efficiency while ensuring that the material is heated evenly during the mixing and screening process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the structure of the vibration component of this utility model. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3 This utility model provides a technical solution: an asphalt concrete screening and drying device, comprising a vibrating screen box 1 and a mixing tank 2 installed on the upper end of the vibrating screen box 1. A hot air blower 4 is provided on one side of the vibrating screen box 1. The hot air blower 4 is connected to the mixing tank 2 and the vibrating screen box 1 through a first air supply pipe 8 and a second air supply pipe 9. A screen plate 3 is installed inside the vibrating screen box 1, and vibration components 5 are provided on both sides of the lower end of the screen plate 3. The bottom of the mixing tank 2 is arranged at an incline, and the discharge port 12 is installed at the bottommost end of the mixing tank 2.

[0021] The vibration assembly 5 includes a support seat 502 fixedly connected to the inner wall of the vibrating screen box 1. Springs 508 are symmetrically fixedly connected to the support seat 502. A fixing plate 501 is fixedly connected to the upper end of each spring 508. A groove is formed on the support seat 502, and an eccentric shaft 509 is rotatably connected within the groove. The eccentric shaft 509 has a U-shaped crankshaft structure. A push-pull rod 505 is rotatably connected to the eccentric shaft 509. A hammer rod 506 is rotatably connected to the upper end of the push-pull rod 505. A limiting cylinder 507 is fixedly connected to the lower end of the fixing plate 501. The hammer rod 506 extends into the limiting cylinder 507. The fixing plate 501 is fixedly connected to the lower surface of the screen plate 3. A rotating motor 504 is installed at one end of the eccentric shaft 509. The fixing plate 501 is fixed to the screen plate 3 with bolts, facilitating the replacement of screen plates 3 with different apertures according to the size of the sand and gravel.

[0022] The mixing tank 2 has an inlet 10 and an outlet 12 at its upper and lower ends, respectively. A drive motor 11 is installed at the upper end of the mixing tank 2, and the output end of the drive motor 11 extends into the mixing tank 2 and is equipped with a stirring rod 7.

[0023] The vibrating screen box 1 has a guide port 13 on its side wall, and the screen plate 3 is placed at an angle with the lower end of the screen plate 3 connected to the guide port 13.

[0024] A collection box 6 is provided at the lower end of the vibrating screen box 1, and the collection box 6 can be pulled out from the vibrating screen box 1.

[0025] The discharge port 12 is located above the higher end of the sieve plate 3.

[0026] Working principle: The user first turns on the hot air blower 4, which delivers hot air to the mixing tank 2 and the vibrating screen box 1 through the first air pipe 8 and the second air pipe 9. The sand and gravel to be dried are poured into the mixing tank 2 through the feed inlet 10. The drive motor 11 is started, which drives the stirring rod 7 to rotate, turning the sand and gravel into the mixing tank 2, so that the sand and gravel are heated and dried more evenly. The dried sand and gravel fall from the discharge outlet 12 onto the screen plate 3 in the vibrating screen box 1. The screen plate 3 is placed at an incline, and gravity moves the sand and gravel towards the lower guide port 13. At the same time, the two rotating motors 5 are started. 04. The rotating motor 504 drives the eccentric shaft 509 to rotate, which in turn drives the push-pull rod 505 to drive the hammer rod 506 to move up and down reciprocally. The hammer rod 506 rhythmically strikes the fixed plate 501. Through the linkage design of the eccentric shaft 509, push-pull rod 505, hammer rod 506 and spring 508, high-frequency vibration is generated. The generated vibration screens the sand and gravel. Large-sized sand and gravel are sent out through the guide port 13, and small-sized sand and gravel fall into the collection box 6 through the through holes on the screen plate 3. During the screening process, the hot air in the vibrating screen box 1 performs secondary drying on the sand and gravel, improving the drying effect.

[0027] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An asphalt concrete screening and drying device, characterized in that: The device includes a vibrating screen box (1) and a mixing tank (2) installed on the upper end of the vibrating screen box (1). A hot air blower (4) is provided on one side of the vibrating screen box (1). The hot air blower (4) is connected to the mixing tank (2) and the vibrating screen box (1) through a first air supply pipe (8) and a second air supply pipe (9). A screen plate (3) is installed inside the vibrating screen box (1). Vibration components (5) are provided on both sides of the lower end of the screen plate (3).

2. The asphalt concrete screening and drying device according to claim 1, characterized in that: The vibration assembly (5) includes a bearing seat (502) fixedly connected to the inner wall of the vibrating screen box (1). Springs (508) are symmetrically fixedly connected to the bearing seat (502). A fixing plate (501) is fixedly connected to the upper end of the springs (508). A groove is provided on the bearing seat (502). An eccentric shaft (509) is rotatably connected in the groove. A push-pull rod (505) is rotatably connected to the eccentric shaft (509). A hammer rod (506) is rotatably connected to the upper end of the push-pull rod (505). A limiting cylinder (507) is fixedly connected to the lower end of the fixing plate (501). The hammer rod (506) extends into the limiting cylinder (507). The fixing plate (501) is fixedly connected to the lower surface of the screen plate (3).

3. The asphalt concrete screening and drying device according to claim 1, characterized in that: The mixing tank (2) has an inlet (10) at the top and an outlet (12) at the bottom. A drive motor (11) is installed at the top of the mixing tank (2). The output end of the drive motor (11) extends into the mixing tank (2) and is equipped with a stirring rod (7).

4. The asphalt concrete screening and drying device according to claim 1, characterized in that: The vibrating screen box (1) has a guide port (13) on its side wall. The screen plate (3) is placed at an angle and the lower end of the screen plate (3) is connected to the guide port (13).

5. The asphalt concrete screening and drying device according to claim 1, characterized in that: A collection box (6) is provided at the lower end of the vibrating screen box (1), and the collection box (6) can be pulled out from the vibrating screen box (1).

6. The asphalt concrete screening and drying device according to claim 3, characterized in that: The discharge port (12) is located above the higher end of the sieve plate (3).

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