Mixing and batching machine for asphalt concrete production

Abstract

The utility model relates to the field of asphalt concrete production discloses a kind of mixing batcher for asphalt concrete production, including rack, rack upper end is fixedly connected with mixing box, mixing box upper end is fixedly connected with feeding bin, feeding bin upper end is fixedly connected with aggregate hopper, feeding bin is fixedly connected with the powder conveying pipe of annular array arrangement located aggregate hopper outside, powder conveying pipe lower end is fixedly connected with the L-shaped powder spraying head of obliquely arranged located aggregate hopper below, ring pipe is fixedly connected with L-shaped powder spraying head below in feeding bin, multiple asphalt nozzles are fixedly connected in ring pipe inner wall, and asphalt pump is equipped outside feeding bin and communicated with ring pipe;Mixing box bottom surface is hingedly connected with the mixing hopper of both sides corresponding arrangement, and opening and closing mechanism for driving both sides mixing hopper swing is equipped on mixing box.The utility model has the advantages compared with prior art, can first spray stone powder into aggregate before mixing, then spray asphalt liquid, greatly improve the uniformity of mixing.

Description

Technical Field

[0001] This utility model relates to the field of asphalt concrete production technology, specifically to a mixing and batching machine for asphalt concrete production. Background Technology

[0002] Asphalt concrete is a composite material widely used in road construction. It is mainly composed of asphalt, aggregates (coarse and fine aggregates) and mineral fillers (stone powder). It is formed by mixing these materials in a specific ratio, heating and then laying and compacting them to form a strong and durable road structure. Asphalt acts as a binder, binding the aggregates and mineral fillers together in a certain composition to form asphalt concrete with good mechanical properties and durability.

[0003] However, existing asphalt concrete mixing equipment usually directly mixes the prepared raw materials as a whole during the feeding process, which can easily lead to uneven mixing and greatly affect the quality of asphalt concrete preparation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a mixing and batching machine for asphalt concrete production, which can spray stone powder into the aggregate before mixing and then spray in asphalt liquid, greatly improving the uniformity of the mixture.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a mixing and batching machine for asphalt concrete production, including a frame, a mixing box fixedly connected to the upper end of the frame, a feeding bin fixedly connected to the upper end of the mixing box, an aggregate hopper fixedly connected to the upper end of the feeding bin, a powder conveying pipe arranged in a ring array outside the aggregate hopper fixedly connected to the feeding bin, an L-shaped powder spraying head arranged obliquely below the aggregate hopper fixedly connected to the lower end of the powder conveying pipe, a ring pipe fixedly connected inside the feeding bin below the L-shaped powder spraying head, a plurality of asphalt nozzles fixedly connected to the inner wall of the ring pipe, and an asphalt pump communicating with the ring pipe outside the feeding bin; the bottom surface of the mixing box is hinged with two corresponding mixing hoppers arranged on both sides, a stirring mechanism is provided in both mixing hoppers, and the mixing box is provided with an opening and closing mechanism for driving the two mixing hoppers to swing.

[0006] As an improvement, the stirring mechanism includes a stirring shaft rotatably connected inside the mixing hopper, stirring blades fixedly connected to the outer wall of the stirring shaft, and a first motor for driving the stirring shaft to rotate fixedly connected to one side of the mixing hopper.

[0007] As an improvement, the opening and closing mechanism includes gears that rotate to drive the corresponding mixing hoppers to rotate on both sides of the mixing box. An electric push rod is fixedly connected to one side of the mixing box, and a connecting plate is fixedly connected to the output end of the electric push rod. Both ends of the connecting plate are fixedly connected to racks that mesh with the corresponding gears.

[0008] As an improvement, the mixing hopper has a quarter-sector cross-section.

[0009] As an improvement, the upper end of the aggregate hopper is provided with a feeding port, and a guide rod is rotatably connected inside the aggregate hopper. The outer wall of the guide rod is fixedly sleeved with a spiral guide blade that cooperates with the inner wall of the aggregate hopper. A second motor that drives the guide rod to rotate is fixedly connected to the upper end of the aggregate hopper.

[0010] The advantages of this invention compared with the prior art are as follows: concrete aggregate is added through an aggregate hopper, and during the descent of the aggregate, mineral powder is sprayed into the aggregate through an L-shaped powder nozzle. The aggregate mixed with stone powder continues to fall and is mixed with asphalt liquid sprayed out through a ring pipe and an asphalt nozzle. Finally, it enters the mixing hopper for further stirring and mixing, which greatly improves the mixing efficiency. Attached Figure Description

[0011] Figure 1 This is an exploded view of a mixing and batching machine for asphalt concrete production according to this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of a mixing and batching machine for asphalt concrete production according to this utility model.

[0013] Figure 3 This is a cross-section of a mixing and batching machine for asphalt concrete production according to this utility model. Figure 1 .

[0014] Figure 4 This is a cross-section of a mixing and batching machine for asphalt concrete production according to this utility model. Figure 2 .

[0015] As shown in the figure: 1. Frame; 2. Mixing box; 3. Feeding bin; 4. Aggregate hopper; 5. Powder conveying pipe; 6. L-shaped powder spraying head; 7. Ring pipe; 8. Asphalt nozzle; 9. Asphalt pump; 10. Mixing hopper; 11. Mixing shaft; 12. Mixing blades; 13. First motor; 14. Rack; 15. Guide rod; 16. Spiral guide blades; 17. Second motor; 18. Feeding port; 19. Electric push rod; 20. Connecting plate; 21. Gear. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 4As shown, a mixing and batching machine for asphalt concrete production includes a frame 1. A mixing bin 2 is fixedly connected to the upper end of the frame 1. A feeding bin 3 is fixedly connected to the upper end of the mixing bin 2. An aggregate hopper 4 is fixedly connected to the upper end of the feeding bin 3. A feeding port 18 is provided at the upper end of the aggregate hopper 4. A guide rod 15 is rotatably connected inside the aggregate hopper 4. A spiral guide blade 16 that cooperates with the inner wall of the aggregate hopper 4 is fixedly sleeved on the outer wall of the guide rod 15. A second motor 17 that drives the guide rod 15 to rotate is fixedly connected to the upper end of the aggregate hopper 4.

[0018] The feeding bin 3 is fixedly connected to a powder conveying pipe 5 arranged in a ring array outside the aggregate hopper 4. The lower end of the powder conveying pipe 5 is fixedly connected to an L-shaped powder spraying head 6 arranged at an angle below the aggregate hopper 4. A ring pipe 7 is fixedly connected inside the feeding bin 3 below the L-shaped powder spraying head 6. Multiple asphalt nozzles 8 are fixedly connected to the inner wall of the ring pipe 7. An asphalt pump 9 connected to the ring pipe 7 is provided outside the feeding bin 3.

[0019] The bottom surface of the mixing tank 2 is hinged with mixing hoppers 10 arranged on both sides. The cross-section of the mixing hopper 10 is quarter-sector shaped. Both sides of the mixing hopper 10 are equipped with a stirring mechanism. The stirring mechanism includes a stirring shaft 11 rotatably connected to the mixing hopper 10. The outer wall of the stirring shaft 11 is fixedly connected with stirring blades 12. A first motor 13 that drives the stirring shaft 11 to rotate is fixedly connected to one side of the mixing hopper 10.

[0020] The mixing box 2 is provided with an opening and closing mechanism that drives the mixing hoppers 10 on both sides to swing. The opening and closing mechanism includes gears 21 that rotate and are connected to the two sides of the mixing box 2 to drive the corresponding mixing hoppers 10 to rotate. An electric push rod 19 is fixedly connected to one side of the mixing box 2. A connecting plate 20 is fixedly connected to the output end of the electric push rod 19. Both ends of the connecting plate 20 are fixedly connected to racks 14 that mesh with the corresponding gears 21.

[0021] In practical use, the second motor 17 drives the guide rod 15 to rotate, and the guide rod 15 drives the spiral guide blades 16 to convey the concrete aggregate downwards, so that the concrete aggregate is discharged through the lower end of the aggregate. The L-shaped powder nozzle is activated to spray the mineral powder in the powder conveying pipe 5, so that the powder is premixed with the concrete aggregate. The concrete aggregate mixed with powder continues to fall. When it falls into the ring pipe 7, the asphalt pump 9 is activated to extract asphalt liquid, and the asphalt liquid is sprayed out through the asphalt nozzle 8, so that the asphalt, concrete aggregate and mineral powder are premixed. Finally, the three raw materials fall into the mixture. Inside hopper 10, the first motor 13 is started to rotate the stirring shaft 11. The stirring shaft 11 drives the stirring blades 12 to further mix the three raw materials. After the mixing is completed, the electric push rod 19 is started to push the connecting plate 20 to slide downward. The connecting plate 20 drives the racks 14 on both sides to slide. The racks 14 on both sides drive the gears 21 on both sides to rotate in opposite directions, so that the mixing hoppers 10 on both sides swing in opposite directions, so that the asphalt concrete material is discharged from the mixing hopper 10. After the discharge is completed, the electric push rod 19 is driven in the opposite direction to close the mixing hoppers 10 on both sides again, so as to facilitate the next mixing.

[0022] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A mixing and batching machine for asphalt concrete production, comprising a frame (1), wherein a mixing bin (2) is fixedly connected to the upper end of the frame (1), and a feeding hopper (3) is fixedly connected to the upper end of the mixing bin (2), characterized in that: An aggregate hopper (4) is fixedly connected to the upper end of the feeding bin (3). A powder conveying pipe (5) arranged in a ring array outside the aggregate hopper (4) is fixedly connected to the feeding bin (3). An L-shaped powder spraying head (6) arranged at an angle below the aggregate hopper (4) is fixedly connected to the lower end of the powder conveying pipe (5). A ring pipe (7) is fixedly connected inside the feeding bin (3) below the L-shaped powder spraying head (6). Multiple asphalt nozzles (8) are fixedly connected to the inner wall of the ring pipe (7). An asphalt pump (9) communicating with the ring pipe (7) is provided outside the feeding bin (3). The bottom surface of the mixing box (2) is hinged with mixing hoppers (10) arranged on both sides. Both sides of the mixing hoppers (10) are equipped with stirring mechanisms. The mixing box (2) is equipped with an opening and closing mechanism to drive the mixing hoppers (10) on both sides to swing.

2. The mixing and batching machine for asphalt concrete production according to claim 1, characterized in that: The stirring mechanism includes a stirring shaft (11) rotatably connected inside the mixing hopper (10), stirring blades (12) are fixedly connected to the outer wall of the stirring shaft (11), and a first motor (13) that drives the stirring shaft (11) to rotate is fixedly connected to one side of the mixing hopper (10).

3. The mixing and batching machine for asphalt concrete production according to claim 1, characterized in that: The opening and closing mechanism includes gears (21) rotatably connected to both sides of the mixing box (2) to drive the corresponding mixing hoppers (10) to rotate. An electric push rod (19) is fixedly connected to one side of the mixing box (2). A connecting plate (20) is fixedly connected to the output end of the electric push rod (19). Both ends of the connecting plate (20) are fixedly connected to racks (14) that mesh with the corresponding gears (21).

4. The mixing and batching machine for asphalt concrete production according to claim 1, characterized in that: The mixing hopper (10) has a quarter-sector cross-section.

5. A mixing and batching machine for asphalt concrete production according to claim 1, characterized in that: The aggregate hopper (4) is provided with a feeding port (18) at the upper end. A guide rod (15) is rotatably connected inside the aggregate hopper (4). A spiral guide blade (16) that cooperates with the inner wall of the aggregate hopper (4) is fixedly sleeved on the outer wall of the guide rod (15). A second motor (17) that drives the guide rod (15) to rotate is fixedly connected to the upper end of the aggregate hopper (4).

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