Discharging device of asphalt mixing station

Abstract

The utility model provides an asphalt mixing station unloading device, the asphalt mixing station comprises a mixing plant and a mixing bin installed on the mixing plant, the asphalt mixing station unloading device comprises an unloading pipe and a temporary storage bin, the bottom of the mixing bin is communicated with the top end of the unloading pipe through a tapered bottom wall, and the top end of the unloading pipe is communicated with the temporary storage bin. A first discharging door is arranged in a discharging opening in the bottom end of the discharging pipe, and a small amount of asphalt concrete is shallowly stored in the discharging pipe to completely cover the first discharging door; a discharging opening in the bottom end of the discharging pipe communicates with a feeding opening of the temporary storage bin, and a second discharging door is arranged in a discharging opening in the bottom of the temporary storage bin. The discharging device of the asphalt mixing station has the advantages of being scientific in design, long in service life, free of frequent maintenance and high in practicability.

Description

Technical Field

[0001] The utility model relates to an asphalt mixing station, in particular to an asphalt mixing station unloading device. Background Art

[0002] Asphalt mixing plant, also known as asphalt mixing plant, is a complete set of equipment used for batch production of asphalt concrete. Asphalt concrete is an asphalt mixture formed by mixing various specifications of aggregates (sand, stone), binders (asphalt or residual oil) and fillers (mineral powder) in a certain proportion. Traditional asphalt mixing plants are equipped with a mixing bin (generally horizontal mixing) on ​​the mixing floor. After weighing, various raw materials are mixed in the mixing bin. The transport truck drives to the bottom of the mixing bin, opens the discharge port, and unloads the asphalt concrete into the truck bucket for transportation. Since there are large particles of stone mixed in the raw materials, when entering the mixing bin, they will directly hit the discharge door at the bottom. During the mixing process, they will also scrape the discharge door, thereby shortening the service life of the discharge door.

[0003] Patent application number 202221713614.0 discloses an asphalt mixing station mixer discharge port device, which protects the discharge door by installing a removable protective plate above the discharge door, thereby extending the service life; but this structure essentially uses the protective plate to replace the discharge door, which withstands the impact and scraping of large-particle stones, so the protective plate needs to be replaced frequently and repaired frequently.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The utility model aims to provide an asphalt mixing station unloading device with scientific design, long service life, no need for frequent maintenance and strong practicality in view of the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an asphalt mixing station unloading device, the asphalt mixing station includes a mixing tower and a mixing bin installed on the mixing tower, the asphalt mixing station unloading device includes a unloading pipe and a buffer bin, the bottom of the mixing bin is connected to the top of the unloading pipe through a tapered bottom wall, a first unloading door is arranged in the bottom discharge port of the unloading pipe, a small amount of asphalt concrete is shallowly stored in the unloading pipe, and the first unloading door is completely covered; the bottom discharge port of the unloading pipe is connected to the feed port of the buffer bin, and a second unloading door is arranged in the bottom discharge port of the buffer bin.

[0007] Based on the above, the discharge pipe has a structure that is narrow at the top and wide at the bottom.

[0008] Based on the above, the tapered bottom wall and the inner wall of the discharge pipe have a smooth transition and are in the shape of an inwardly convex arc.

[0009] Based on the above, the first unloading door and the second unloading door are respectively driven to open and close by cylinders.

[0010] Based on the above, the mixing tower is provided with partitions on the front and rear sides of the mixing bin and on the front and rear sides of the buffer bin.

[0011] The utility model has substantial characteristics and progress compared with the prior art. Specifically, after each unloading of the mixing bin is completed, the utility model closes the first unloading door and waits for a period of time. The asphalt concrete attached to the inner wall of the mixing bin will be collected in the unloading pipe under the guidance of the tapered bottom wall, covering the first unloading door, thereby playing a protective role. When entering the next mixing, the residual asphalt concrete in the unloading pipe is also in the mixing dead zone, thereby preventing the first unloading door from being hit and scraped by large-particle stones. Similarly, a part of the asphalt concrete remains in the buffer bin each time it is lowered, which can also prevent the second unloading door from being hit by large-particle stones. It has the advantages of scientific design, long service life, no frequent maintenance and strong practicality.

[0012] Furthermore, the discharge pipe is configured to have a structure that is narrow at the top and wide at the bottom, and the bottom area is large, so it is not easy to be blocked due to the gradual solidification of the asphalt concrete. After the material is discharged, similar to the "collapse" principle, under the action of the self-weight pressure, it can also ensure that the entire discharge pipe is not blocked; the tapered bottom wall and the inner wall of the discharge pipe are configured to be an inwardly protruding arc shape, which can reduce friction and speed up the collection of the adhered asphalt concrete; the setting of the partition can play a protective and soundproof role. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the unloading device of the asphalt mixing station in Example 1.

[0014] Figure 2 It is a schematic diagram of the structure near the discharge pipe in Example 1.

[0015] Figure 3 It is a schematic diagram of the external structure of the unloading device of the asphalt mixing station in Example 2.

[0016] In the figure: 1. Mixing tower; 2. Mixing bin; 3. Discharge pipe; 4. Buffer bin; 5. First discharge door; 6. Second discharge door; 7. Cylinder; 8. Partition; 21. Tapered bottom wall. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described in detail below through specific implementation methods. Example 1

[0018] like Figure 1 and Figure 2 As shown, an asphalt mixing station unloading device, the asphalt mixing station includes a mixing tower 1 and a mixing bin 2 installed on the mixing tower 1, the asphalt mixing station unloading device includes a unloading pipe 3 and a buffer bin 4 (also installed on the mixing tower 1), the bottom of the mixing bin 2 is connected to the top of the unloading pipe 3 through a tapered bottom wall 21, a first unloading door 5 is arranged in the bottom discharge port of the unloading pipe 3, a small amount of asphalt concrete is shallowly stored in the unloading pipe 3, and the first unloading door 5 is completely covered; the bottom discharge port of the unloading pipe 3 is connected to the feed port of the buffer bin 4, a second unloading door 6 is arranged in the bottom discharge port of the buffer bin 4, and the first unloading door 5 and the second unloading door 6 are respectively driven to open and close by cylinders 7.

[0019] Working principle:

[0020] After each unloading of the mixing bin 2 is completed, the first unloading door 5 is closed and waits for a period of time. The asphalt concrete attached to the inner wall of the mixing bin 2 will be collected in the unloading pipe 3 under the guidance of the tapered bottom wall 21, covering the first unloading door 5, thereby playing a protective role. When entering the next mixing, the residual asphalt concrete in the unloading pipe 3 is also in the mixing dead zone, thereby preventing the first unloading door 5 from being hit and scraped by large-grained stones; each time the mixed asphalt concrete is temporarily stored in the buffer bin 4, during unloading, a part of the asphalt concrete will remain in the buffer bin 4 each time it is lowered, which can also prevent the second unloading door 6 from being hit by large-grained stones, so that both unloading doors are not easily damaged.

[0021] In order to prevent the discharge pipe 3 from being blocked, the discharge pipe 3 is of a narrow upper part and a wide lower part structure with a large bottom area, which is not easily blocked due to the gradual solidification of the asphalt concrete. After the discharge of the material begins, similar to the "collapse" principle, under the action of the self-weight pressure, it can also ensure that the entire discharge pipe 3 is not blocked.

[0022] The tapered bottom wall 21 and the inner wall of the discharge pipe 3 have a smooth transition and are in an inwardly convex arc shape, which can reduce friction and speed up the collection of the adhered asphalt concrete. Example 2

[0023] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the mixing tower 1 is provided with partitions 8 on the front and rear sides of the mixing bin 2 and the front and rear sides of the buffer bin 4; the partitions 8 can protect the mixing bin 2 and the buffer bin 4 from wind and sun, and can also reduce noise.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An asphalt mixing station unloading device, the asphalt mixing station comprising a mixing tower and a mixing bin installed on the mixing tower, characterized in that: The unloading device of the asphalt mixing station includes a unloading pipe and a buffer bin. The bottom of the mixing bin is connected to the top of the unloading pipe through a tapered bottom wall. A first unloading door is arranged in the bottom discharge port of the unloading pipe. A small amount of asphalt concrete is shallowly stored in the unloading pipe to completely cover the first unloading door. The bottom discharge port of the unloading pipe is connected to the feed port of the buffer bin, and a second unloading door is arranged in the bottom discharge port of the buffer bin.

2. The asphalt mixing station unloading device according to claim 1, characterized in that: The discharge pipe is in a structure of being narrow at the top and wide at the bottom.

3. The asphalt mixing station unloading device according to claim 2 is characterized in that: The tapered bottom wall and the inner wall of the discharge pipe have a smooth transition and are in an inwardly convex arc shape.

4. The asphalt mixing station unloading device according to any one of claims 1 to 3, characterized in that: The first discharge door and the second discharge door are respectively opened and closed by cylinder driving.

5. The asphalt mixing station unloading device according to claim 4, characterized in that: The mixing tower is provided with partitions on both sides of the mixing bin and the buffer bin.

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