C-type asphalt mixture primary regeneration all-in-one machine

Abstract

The utility model discloses a C-type asphalt mixture primary regeneration all-in-one machine which comprises a batching mechanism, a drying cylinder, a change-over valve, a lifting mechanism and a mixing main building, the batching mechanism is used for containing primary aggregate and recycled aggregate; the drying cylinder is used for drying and heating the aggregate to form a hot mixed material; the change-over valve controls the flow direction of the hot mixed material; the lifting mechanism comprises a first lifting machine and a second lifting machine which are used for lifting hot mixed materials with different properties respectively; and the mixing main plant is used for stirring the hot mixture to form an asphalt mixture and storing the asphalt mixture. According to the utility model, the batching mechanism is used for accurately batching the primary aggregate and the recycled aggregate according to the mixing ratio and conveying the raw aggregate and the recycled aggregate into the drying cylinder for heating, and the change-over valve can be used for conveying hot mixed materials with different properties to the mixing main building for stirring through the second elevator and the first elevator respectively; the primary aggregate and the recycled aggregate can be dried and heated at the same time through one drying cylinder, the heating process is simple, and heat loss is small.

Description

Technical Field

[0001] The utility model relates to the technical field of building material production equipment, and more particularly to a C-type asphalt mixture primary regeneration integrated machine. Background Art

[0002] Asphalt mixture recycling technology is a process of excavating, recycling, crushing and screening old asphalt concrete pavements that need to be renovated or abandoned to form recycled asphalt pavement materials. Then, an appropriate amount of new aggregate and new asphalt are added and remixed into a recycled asphalt mixture with good road performance. This complete process technology is used for paving the surface or base layer of the road surface. It can save a large amount of asphalt and sand and gravel materials, save project investment and reduce environmental pollution.

[0003] Plant-mix hot recycling is the primary technology for asphalt mixture regeneration. Recycled asphalt mixture and new aggregate used to produce it are dried and heated in separate drying drums, then weighed and metered separately. New mineral powder, new asphalt, and additives are also weighed and metered. After metering, the various raw materials are added to a mixing tank in a predetermined sequence and mixed to create a recycled asphalt mixture that meets construction requirements.

[0004] However, in the production process of conventional asphalt plant hot-mix recycling equipment, the drying and heating of asphalt pavement recycled materials and new aggregates require two drying drums, resulting in repeated heating processes, large heat losses, low thermal efficiency, complex equipment structure, and high equipment costs. The regeneration drying drum is arranged at a high position on the top of the mixing building, and the equipment operation stability is poor. The pavement recycled materials are independently dried and heated by the regeneration drying drum. The recycled materials are in full contact with the burner flame and high-temperature hot air flow. The old asphalt in the recycled materials is prone to high-temperature aging, and a large amount of asphalt smoke is generated.

[0005] Therefore, how to provide an asphalt mixture primary recycling integrated machine with high operating efficiency, low energy loss, long equipment service life and greater environmental protection is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] In view of this, the present invention provides a C-type asphalt mixture primary regeneration integrated machine, which aims to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A C-type asphalt mixture primary recycling integrated machine, comprising:

[0009] A batching mechanism, the batching mechanism comprising a plurality of batching bins, wherein the plurality of batching bins respectively contain virgin aggregate and recycled aggregate;

[0010] A drying drum, wherein the material inlet of the drying drum is connected to the material outlets of the plurality of batching bins via a mixing conveyor to dry and heat the virgin aggregate and the recycled aggregate to form a hot mixture;

[0011] A switching valve is fixed at the discharge port of the drying drum to control the flow direction of the heated aggregate;

[0012] A lifting mechanism, the lifting mechanism lifting the hot mixed material; the lifting mechanism includes a first hoist and a second hoist, the feeding ends of the first hoist and the second hoist are both connected to the discharge port of the conversion valve;

[0013] The main mixing building has its feed end connected to the discharge end of the first elevator and the second elevator to mix the hot mix to form asphalt mixture and store it.

[0014] The beneficial effect of the above technical solution is that the batching mechanism accurately batches the virgin aggregate and the recycled aggregate according to the mix ratio and transports them to the drying drum through the mixing conveyor for heating to form a hot mixture. According to the different properties of the hot mixture, the conversion valve can transport the hot mixtures of different properties to the mixing main building through the first hoist and the second hoist for stirring. The drying drum adopts a low-position arrangement, and the virgin aggregate and the recycled aggregate can be dried and heated simultaneously using one drying drum. The heating process is simple and the heat loss is small.

[0015] Preferably, the batching mechanism further includes a collection conveyor and a premixer; the front end of the collection conveyor in the conveying direction is connected to the discharge ports of the multiple batching bins, and the end in the conveying direction is connected to the inlet of the premixer to mix the virgin aggregate and the recycled aggregate evenly to form a cold mixed aggregate; the discharge port of the premixer is connected to the inlet of the mixing conveyor to transport the cold mixed aggregate. A premixer can be selected based on the nature of the project and the characteristics of the aggregate. The premixer can stir the aggregate to form a cold mix, which is then transported to a drying drum via the mixing conveyor for drying and heating to form a hot mix.

[0016] Preferably, the conversion valve is a plate-type swing valve having two outlets: a first outlet connected to the feed inlet of the first elevator, and a second outlet connected to the feed inlet of the second elevator. For hot mixed raw materials with a high recovery and addition ratio, the plate within the conversion valve swings to open the first outlet and close the second outlet, allowing the material to enter the first elevator. For hot raw aggregate alone or a hot mixed raw material with a low recovery and addition ratio, the plate within the conversion valve swings to close the first outlet and open the second outlet, allowing the material to enter the second elevator. The configuration of the conversion valve simplifies the production process, reduces equipment space, and saves energy.

[0017] Preferably, the system further comprises a feed conveyor, wherein the feed port of the feed conveyor is connected to the second outlet of the switching valve, and the discharge port of the feed conveyor is connected to the feed port of the second elevator. The feed conveyor connects the switching valve and the second elevator, ensuring that the second elevator and the first elevator have sufficient lifting space to lift hot mixed materials with different properties.

[0018] Preferably, the conveying direction of the feed conveyor is perpendicular to the conveying direction of the mixing conveyor, thereby reducing the overall space occupied by the equipment, simplifying the configuration of the equipment, and reducing the equipment cost.

[0019] Preferably, the drying drum is a downstream heating drying drum or a countercurrent heating drying drum.

[0020] Preferably, the first elevator is a bucket elevator, and the second elevator is a scraper elevator. Hot mix with higher viscosity enters the bucket elevator through the first outlet of the conversion valve and directly enters the main mixing building for mixing. Hot mix with lower viscosity enters the feed conveyor through the second outlet of the conversion valve and then enters the main mixing building for mixing via the scraper conveyor. By configuring different types of first and second elevators, hot mixes with different properties can be differentiated to meet the diverse needs of different mix ratios, different production processes, and different users.

[0021] It can be seen from the above technical solution that compared with the prior art, the utility model discloses a C-type asphalt mixture primary regeneration integrated machine, the heating process of the equipment is intensive, the heat loss is small, and the thermal efficiency is high; the old asphalt in the recycled material is not easy to age at high temperature, and the amount of asphalt smoke generated is small; the production process is simplified, the equipment configuration is simplified, and the equipment cost is low; the drying cylinder adopts a low-position arrangement and is placed on the equipment foundation. The equipment has good operating stability, high operating efficiency, energy saving, small equipment wear, and long service life, which can meet various site conditions and diverse user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 This is a front view of the asphalt mixture primary recycling machine provided by the utility model;

[0024] Figure 2 A schematic diagram of the arrangement of the lifting mechanism provided by the utility model;

[0025] Figure 3This is a top view of the asphalt mixture primary regeneration integrated machine provided by the utility model.

[0026] in,

[0027] 1- batching mechanism; 11- batching bin; 12- aggregate conveyor; 13- premix mixer;

[0028] 2-Mixing conveyor; 3-Drying drum; 4-Feeding conveyor; 5-Conversion valve; 6-Second elevator; 7-First elevator; 8-Main mixing building. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See attached Figures 1 to 3 The embodiment of the utility model discloses a C-type asphalt mixture primary regeneration integrated machine, comprising:

[0031] Batching mechanism 1, the batching mechanism 1 includes a plurality of batching bins 11, and the plurality of batching bins 11 respectively contain virgin aggregate and recycled aggregate;

[0032] The drying drum 3 has an inlet connected to the outlets of the multiple batching bins 11 via a mixing conveyor 2 to dry and heat the virgin aggregate and the recycled aggregate to form a hot mix;

[0033] The switching valve 5 is fixed at the discharge port of the drying drum 3 to control the flow direction of the heated aggregate;

[0034] A lifting mechanism, wherein the lifting mechanism lifts the hot mixed material; the lifting mechanism includes a first hoist 7 and a second hoist 6, and the feeding ends of the first hoist 7 and the second hoist 6 are both connected to the discharge port of the conversion valve 5;

[0035] The main mixing building 8 has its inlet end connected to the outlet end of the first elevator 7 and the second elevator 6 to mix the hot mix to form asphalt mixture and store it.

[0036] like Figure 1 and 3 As shown, the batching silo includes a virgin silo and a recycled silo, which respectively contain virgin aggregate and recycled aggregate. The batching silo is equipped with a belt scale, a position sensor, a metering sensor, and a speed sensor. The raw materials (virgin aggregate and recycled aggregate) are accurately measured and proportioned through the belt scale, the position sensor, the metering sensor, and the speed sensor.

[0037] In order to further optimize the above technical solution, the batching mechanism 1 also includes a collecting conveyor 12 and a premixer 13; the front end of the collecting conveyor 12 in the conveying direction is connected to the discharge ports of multiple batching bins 11, and the end in the conveying direction is connected to the inlet of the premixer 13 to mix the virgin aggregate and the recycled aggregate evenly and form a cold mix; the discharge port of the premixer 13 is connected to the inlet of the mixing conveyor 2 to convey the cold mix.

[0038] The aggregate in the batching bin is transported to the premixer through the aggregate conveyor. The premixer can stir the aggregate to form a uniform cold mix. The cold mix is ​​transported to the drying drum through the mixing conveyor for drying and heating to form a hot mix.

[0039] In the actual production process, the virgin aggregate and the recycled aggregate can be premixed separately, or the virgin aggregate and the recycled aggregate can be premixed at the same time; the drying drum in this embodiment is fixed to the ground and arranged in a low-position manner. One drying drum can dry and heat the virgin aggregate separately, or dry and heat the virgin aggregate and the recycled aggregate at the same time. Compared with the traditional method of using two drying drums to dry and heat the virgin aggregate and the recycled aggregate separately, the use of a low-position drying drum can achieve the drying and heating of the virgin aggregate and the recycled aggregate at the same time, which simplifies the structure of the equipment and reduces the equipment cost.

[0040] In some other specific embodiments, the aggregate can also be directly transported to the drying drum for drying and heating without premixing and stirring, which provides more diverse options and adapts to different production conditions and the needs of various users.

[0041] In order to further optimize the above technical solution, the conversion valve 5 is a plate-type swing valve having two outlets. The first outlet of the conversion valve 5 is connected to the feed port of the first elevator 7 , and the second outlet is connected to the feed port of the second elevator 6 .

[0042] In order to further optimize the above technical solution, a feed conveyor 4 is also included, the feed port of the feed conveyor 4 is connected to the second outlet of the conversion valve 5, and the discharge port is connected to the feed port of the second elevator 6.

[0043] like Figure 2 As shown, the conversion valve is used as a process conversion device. For hot mixed raw materials with a high recovery addition ratio, the plate in the conversion valve swings to open the first outlet and close the second outlet, allowing the material to enter the first elevator; for single hot virgin aggregate and hot mixed raw materials with a low recovery addition ratio, the plate in the conversion valve swings to close the first outlet and open the second outlet, allowing the material to enter the second elevator through the feed conveyor. The setting of the conversion valve can simplify the production process, reduce the equipment space, and save energy consumption.

[0044] The conversion valve can also adopt one or a combination of mechanisms such as a rotary valve, a gate valve, a feed conveyor, a two-way conveyor, etc.

[0045] In order to further optimize the above technical solution and reduce the space occupied by the equipment, the conveying direction of the feed conveyor 4 is perpendicular to the conveying direction of the mixing conveyor 2. A C-type virgin regeneration integrated machine is formed, which reduces the equipment's usage space, simplifies the equipment configuration, and reduces the cost.

[0046] In order to further optimize the above technical solution, the drying drum 3 is a downstream heating drying drum or a countercurrent heating drying drum.

[0047] When the drying drum is a downstream heating drying drum, it includes a burner, a feed head, a cylinder, a W-shaped guide plate, a bridge-type anti-segregation device, a discharge head, a dust removal system and pipelines, a frame, a transmission device, and a heating and heat preservation device; the raw materials are fed into the drying drum through the feed head. Due to the rotation and inclination of the drying drum, the raw materials (cold mixed materials) move toward the lower end. The guide plate is used to sprinkle the raw materials to form a uniform material curtain. The burner is used to provide hot air to the sprinkled material curtain. The bridge-type anti-segregation device is used to prevent large-particle-size raw materials from segregating from small-particle-size raw materials; the discharge head is used to discharge the heated raw materials (hot mixed materials). The pipeline and dust removal system are used to collect dust and harmful smoke during the raw material heating process.

[0048] When the drying drum is a countercurrent heating drying drum, it includes a feed head, a cylinder, a guide plate, a bridge-type anti-segregation device, a discharge head, a hot air furnace, an asphalt flue gas secondary circulation air duct, a burner, a frame, a transmission device, a dust removal system and pipeline components, an air duct valve, and a heating and heat preservation device; the raw materials are fed into the drying drum through the feed head. Due to the rotation and inclination of the drying drum, the raw materials move toward the lower end. The guide plate is used to sprinkle the raw materials to form a uniform material curtain. The burner and the hot air furnace are used to provide hot air to the material curtain. During the movement of the raw materials toward the lower end, the bridge-type anti-segregation device is used to prevent segregation of large-size aggregate and small-size aggregate; the discharge head is used to output the heated raw materials, and the dust removal system and pipeline are used to collect dust during the heating process of the raw materials.

[0049] In this embodiment, the main mixing building is a conventional configuration of an asphalt mixing plant and will not be described here.

[0050] In order to further optimize the above technical solution, the first elevator 7 is a bucket elevator and the second elevator 6 is a scraper elevator. In the actual production process, the lifting mechanism can also adopt a single bucket elevator or a bucket inclined elevator to complete the lifting of the hot mixed material.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0052] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A C-type asphalt mixture primary regeneration integrated machine, characterized in that: include: A batching mechanism (1), the batching mechanism (1) comprising a plurality of batching bins (11), wherein the plurality of batching bins (11) respectively contain virgin aggregate and recycled aggregate; A drying drum (3), wherein the material inlet of the drying drum (3) is connected to the material outlets of the plurality of material batching bins (11) via a mixing conveyor (2) to dry and heat the virgin aggregate and the recycled aggregate to form a hot mixture; A switching valve (5), the switching valve (5) being fixed to the discharge port of the drying drum (3) to control the flow direction of the heated aggregate; A lifting mechanism, the lifting mechanism lifting the hot mixed material; the lifting mechanism comprises a first hoist (7) and a second hoist (6), the feeding ends of the first hoist (7) and the second hoist (6) are both connected to the discharge port of the conversion valve (5); A mixing main building (8), wherein the feeding end of the mixing main building (8) is connected to the discharging end of the first elevator (7) and the second elevator (6) to stir the hot mix to form an asphalt mixture and store it.

2. A C-type asphalt mixture primary regeneration integrated machine according to claim 1, characterized in that: The batching mechanism (1) further comprises a collecting conveyor (12) and a premixing mixer (13); the front end of the collecting conveyor (12) in the conveying direction is connected to the discharge ports of the plurality of batching bins (11), and the end in the conveying direction is connected to the inlet of the premixing mixer (13) to mix the virgin aggregate and the recycled aggregate evenly and form a cold mixed aggregate; the discharge port of the premixing mixer (13) is connected to the inlet of the mixing conveyor (2) to convey the cold mixed aggregate.

3. The C-type asphalt mixture primary regeneration integrated machine according to claim 1, characterized in that: The conversion valve (5) is a plate-type swing valve having two outlets. The first outlet of the conversion valve (5) is connected to the feed inlet of the first elevator (7), and the second outlet is connected to the feed inlet of the second elevator (6).

4. A C-type asphalt mixture primary regeneration integrated machine according to claim 3, characterized in that: It also includes a feeding conveyor (4), the feeding port of the feeding conveyor (4) is connected to the second outlet of the conversion valve (5), and the discharging port is connected to the feeding port of the second hoist (6).

5. The C-type asphalt mixture primary regeneration integrated machine according to claim 4, characterized in that: The conveying direction of the feeding conveyor (4) and the conveying direction of the mixing conveyor (2) are perpendicular to each other.

6. The C-type asphalt mixture primary regeneration integrated machine according to claim 1, characterized in that: The drying cylinder (3) is a downstream heating drying cylinder or a countercurrent heating drying cylinder.

7. The C-type asphalt mixture primary regeneration integrated machine according to claim 1, characterized in that: The first elevator (7) is a bucket elevator, and the second elevator (6) is a scraper elevator.

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