Mobile Asphalt Mixing Plants Are Becoming the Preferred Choice

The drive unit is one of the important components of the asphalt mixing plant, so whether it can be reliably operated must be highly valued to avoid adverse effects on the entire asphalt mixing plant. To ensure that the drive unit in the asphalt mixing plant is indeed complete and reliable, the following maintenance measures are essential.
The first thing to pay attention to is the universal rotating part of the drive unit of the asphalt mixing plant. This part has always been a fault-prone part. In order to reduce the occurrence of faults, grease should be added on time, and the wear should be checked frequently, and repaired and replaced in time. Users should also prepare the universal shaft assembly to avoid affecting the working process of the entire asphalt mixer.

In fact, don’t be misled by the name. The asphalt mixing plant we are talking about here does not necessarily refer to simple asphalt mixing, but may also refer to asphalt concrete mixing, so it is actually a mixing plant. At present, asphalt mixing plants generally use complete sets of equipment for mixing purposes. The benefits of using complete sets of equipment are as follows.
1. Higher efficiency
For the current industrial production, complete sets of equipment can help improve production efficiency and ensure production quality. This is why even in mixing plants, the equipment used is mainly complete sets of equipment.
2. Ensure quality
When mixing asphalt, a certain ratio will be set. For this type of asphalt liquid used in different occasions, its ratio control has strict requirements. Only by ensuring its mixing method and mixing time can the asphalt liquid be ensured to be used in the production site. One of the benefits of a mixing station is that the quality can be effectively controlled.
3. Ability to perform random inspections
After mixing at the mixing station, relevant quality inspection personnel can conduct random inspections to ensure that the mixed asphalt liquid meets the use requirements.
In short, asphalt mixing plants use complete sets of equipment, mainly to facilitate the asphalt to meet production needs in the later stage. Using a mixing plant, it can better control the mixing time and the order of feeding, so as to ensure that the mixed products meet different usage requirements. And after using the archived equipment, effective sampling can also be carried out, which can better ensure that the quality meets the construction.

Road construction machinery is a large range, so let’s talk about one of it, which is the asphalt mixing plant. It is mainly used to produce asphalt, so it is very important among road construction machinery and equipment. An important part, if the quality of the finished product is not good, it will greatly affect the quality of the road. Therefore, below, the editor will use the form of question and answer to guide you to continue learning.

With the strengthening of the trend of environmental protection and energy conservation, the environmental protection of asphalt mixing plants has gradually become the mainstream form of mixing plant development. What kind of equipment can be called an environmentally friendly asphalt mixing plant? What are the basic conditions that must be met?
First of all, as an environmentally friendly asphalt mixing plant, it must meet the requirement of using less energy consumption during use. That is to say, under the conditions of the same quantity and quality, less energy is consumed during the operation process, including various resources such as water and electricity.
Secondly, environmentally friendly asphalt mixing plants not only require less energy consumption, but also must achieve higher production efficiency, while also reducing carbon emissions in the entire production process, so as to meet the proposed low-carbon production requirements

The drying and heating system of the asphalt mixing plant can be regarded as an important part of the whole, so in actual work, it treats the material in a countercurrent heating manner, thereby achieving full dehydration of the cold aggregate, and heating it to a certain temperature, thereby providing the necessary conditions for the normal and continuous operation of the asphalt mixing plant.
During the entire heating process of the asphalt mixing plant, the main purpose is to make the performance of the mixture more in line with the requirements of use, and to make the finished material have good paving performance. Under normal circumstances, the heating temperature of the aggregate is about 160℃-180℃.

With increasingly stringent environmental protection policies, asphalt mixing stations face severe challenges such as excessive dust and exhaust gas emissions. How to achieve standard production through efficient and environmentally friendly transformation while controlling costs? This article will reveal three core transformation plans to help mixing stations achieve a direct reduction of more than 80% in emissions, combining economy and compliance!
1. Dust control: Upgrade pulse bag dust removal system
Traditional dust removal equipment is difficult to cope with high humidity and high viscosity dust in asphalt stations, which can easily cause filter bags to compact. The transformation plan includes:
Filter material upgrade: Use oil-proof and waterproof coated filter bags, which can withstand 240℃ high-temperature asphalt flue gas and extend the service life by 2 times.
Intelligent cleaning: Equipped with a 0.5MPa high-pressure pulse backflush device, the cleaning frequency is automatically adjusted according to the pressure difference, and the dust capture efficiency exceeds 99%.
Seal transformation: Install double-layer soft curtain seals on dust-raising points such as silos and conveyor belts to reduce unorganized emissions.
Transformation effect: dust emission concentration dropped from 100mg/m3 to below 10mg/m3, which is better than the national standard.
With increasingly stringent environmental protection policies, asphalt mixing plants face severe challenges such as excessive dust and exhaust gas emissions. How to achieve standard production through efficient and environmentally friendly transformation while controlling costs? This article will reveal three core transformation solutions to help mixing stations achieve a direct reduction of more than 80% in emissions, combining economy and compliance!

Asphalt mixing plant is one of the main equipment for producing asphalt concrete. It can mix asphalt, gravel, cement and other materials together in a certain proportion to obtain the products required for highway construction. In order to ensure its operating effect, the asphalt mixing station also needs to be powered on for trial operation before it is officially put into work.
At the beginning of the test run, first run a single motor, and at the same time check whether the current, steering, insulation and mechanical transmission parts are operating normally. After confirming that each motor and mechanical transmission parts are operating correctly, conduct a joint trial run. During the entire process, it is necessary to conduct patrol inspections of key parts. If any abnormal noise is found, the cause should be identified and eliminated in a timely manner.

In recent years, asphalt concrete, as a new green building material, is gradually being valued by people because of its excellent performance in saving resources, being environmentally friendly, ensuring the quality of construction projects, and achieving sustainable utilization of resources. The development of asphalt concrete fully embodies my country’s policies to achieve energy conservation and emission reduction, and is also an important measure to promote the development of circular economy.

Asphalt concrete mixing equipment generally uses conveyor belt conveyors to transport cold materials. Its main advantages are large conveying capacity, continuous operation, simple equipment structure and automatic control. However, belt deviation is a common fault, which directly affects the drying operation of the drying drum and also affects the production efficiency of the mixing equipment. Therefore, it is very important for the asphalt mixing station to solve the belt deviation problem at the operation site of the asphalt concrete mixing equipment.

Installation in Highway Construction
01 Asphalt Mixing Plants in Highway Construction
With economic prosperity, highway construction in my country has made significant progress. Quality requirements for highway construction are becoming increasingly stringent, and mechanized construction has become an industry trend. This not only reduces labor intensity but also significantly shortens the construction cycle, thus showcasing the modernization of highway construction. In the construction of highway pavements, mixing, paving, and compaction are the three core stages, with the mixing stage being crucial for ensuring construction quality. Asphalt concrete mixing equipment, as a key factor in this stage, has a decisive impact on the progress and quality of the project. This equipment integrates mechanical, electrical, and automation technologies and is an indispensable and important link in highway construction.
02 Site Selection and Layout Before Installation
In the highway construction process, the installation of the asphalt plant is a crucial step. It involves not only the selection of the equipment site but also a reasonable layout plan. Correct installation location and layout can ensure the production efficiency and quality of asphalt concrete, thereby affecting the progress and quality of the entire highway project. Therefore, the installation of the asphalt plant must be carefully considered and planned before construction.

Asphalt mixing stations have always been criticized for pollution due to the emission of harmful smoke and dust and high energy consumption. Asphalt mixing stations with high pollution, high energy consumption and unqualified environmental protection are obviously incompatible with modern urban development. Under the high pressure of environmental protection supervision, how can asphalt mixing stations pass environmental protection inspections smoothly? Can asphalt mixing stations be low-carbon, energy-saving, and environmentally friendly, and achieve environmental protection upgrades?
As a professional asphalt mixing equipment R&D and manufacturer, how to make asphalt mixing stations more environmentally friendly and energy-saving has always been the direction of Nanfang Road Machinery’s efforts. In response to the pollution problems faced by asphalt mixing stations, Nanfang Road Machinery has launched environmentally friendly asphalt mixing equipment with strict environmental protection standards.

Asphalt mixing stations and equipment must implement secondary leakage protection measures. They can only be used after being plugged in and operated through the circuit breaker before use. During the trial operation, it is necessary to verify that the rotational speed of the mixing drum will be inappropriate.

Asphalt mixing equipment is a large-scale equipment, so you must pay attention to safety when using it to avoid accidents. But to put it simply, if you want to truly use it safely, you must master some basic common sense. The following main things must be kept in mind.

Modern road construction, upgrading of rural roads and road emergency repair projects put forward higher requirements for flexibility, operation efficiency and cost control of asphalt production equipment. The installation process of traditional fixed asphalt mixing plant is complicated, the commissioning period is long, and the requirements for construction site conditions are strict, so it is difficult to adapt to the project with scattered points, short construction period and frequent transfer. As an integrated modular construction equipment, mobile drum asphalt mixing plant integrates aggregate batching, drying, mixing and finished material storage functions. It has outstanding advantages such as flexible transfer, rapid commissioning and hot asphalt mixing on site. Now it has become the preferred equipment for global engineering construction enterprises. This paper comprehensively introduces the core advantages, field operation process, real overseas customer application cases, application scenarios and customer use evaluation of the equipment, providing reference for construction units to select efficient and stable asphalt production equipment. 

The application of asphalt mixing plants also involves selection issues. In order to give full play to the performance of the equipment, the model of the machine is mainly determined according to the actual situation of the construction site. It sounds relatively simple, but some details still need to be emphasized.
The so-called specific conditions of the construction site first include the size of the site; secondly, the properties, specifications and working dimensions of the enterprise’s supporting equipment. It is necessary to try to do a good job in all aspects to help improve production efficiency and ensure product quality. In the case of intensive network management, the network management function of the asphalt mixing plant must also be taken into account to avoid difficulties in future upgrades.

During the asphalt mixing process, we generally use complete sets of asphalt mixing plant equipment to carry out mixing operations. What are the benefits of using complete sets of equipment? Let’s take a look.
1. High efficiency
Complete sets of equipment can help improve production efficiency and ensure production quality.
2. Ensure quality
When mixing asphalt, a ratio will be set. For asphalt liquid used in different occasions, its ratio control has strict requirements. Only by ensuring its mixing method and mixing time can we ensure whether the asphalt liquid meets the production requirements. One of the benefits of using complete sets of equipment in the mixing station is that the quality can be effectively controlled.
3. Can be sampled
After the asphalt mixing plant is mixed, the relevant quality inspection personnel can conduct sample inspections to ensure that the mixed asphalt liquid meets the use requirements.
Using complete sets of equipment in the asphalt mixing plant can more conveniently control the mixing time and the order of feeding, and then effectively sample inspection, so as to ensure that the quality meets the construction requirements.

For road construction machinery, the following is mainly about the asphalt mixer in road construction machinery equipment. Because it is the key product of Wuxi road construction machinery manufacturers, it is necessary to carry out comprehensive training and mastery, so as to ensure meticulousness and practicality, and not ignore any knowledge points.
1. In road construction machinery, is there any difference between asphalt mixing equipment and asphalt concrete mixing equipment?
The answer given by Sinoroader Group manufacturer to this question is no, that is, there is no difference between asphalt mixing equipment and asphalt concrete mixing equipment. They refer to the same type of equipment, but they are different in name. It can be said that they are two names for the same type of equipment, and there is no difference in essence.
2. During the operation of the asphalt mixer, there is a sound in the mixing pot. What’s the matter?
In the view of Sinoroader Group, there are two answers to this question. One is that the mixer arm on the asphalt mixer is not good or damaged. The second is that the wear-resistant lining in the mixer is damaged, which leads to this problem.
3. What are the dust removal devices in the asphalt mixing equipment?
In the asphalt mixing equipment, for its dust removal device, Sinoroader Group believes that the key is to use the dry ash removal method, because it can facilitate the collection of raw materials. In terms of its dust removal equipment type, there are filter dust removal equipment, centrifugal fan dust removal equipment and force dust removal equipment, etc., which can all be used well.
For the asphalt mixer and asphalt mixing equipment in road construction machinery, I believe that through the practical discussion of the above relevant content, everyone can master it well and master it, so that in practice, they can have new gains and benefit a lot from it.

Due to the good reliability of asphalt, more and more fields have just begun to use asphalt as raw material for daily production and processing work; such as construction, urban roads, etc. In addition, the processing plant will humanize and manufacture asphalt according to customer requirements, and will use professional technical tools for asphalt mixing work. Compared with the application of old technical equipment, the new asphalt mixing equipment has stronger technicality and efficient operation speed. In addition, the equipment will use an automatic computer operating system to reduce redundant errors and reduce the working time of operators.
In addition, the processing plant will also mix and manufacture asphalt with higher precision asphalt mixing equipment, and only a small amount of raw materials and natural materials will be used for asphalt mixing and manufacturing; and it can reasonably control the quality of goods and improve the quality of goods.
Do you master the whole process of asphalt mixing equipment? The whole working process is a fusion of stone mixing, slag micro powder mixing and asphalt mixing. You can find a lot of detailed information below.

As a special equipment, standardizing the operating procedures of important production tools of asphalt mixing stations, conducting daily maintenance, regular inspections, eliminating hidden dangers, etc. can effectively ensure the safety and stability of the equipment and prevent equipment from malfunctioning due to misoperation. causing equipment damage. Good maintenance operations can also greatly extend the service life of asphalt mixing plants. Therefore, before daily operation, the asphalt mixing plant must be properly maintained to make the asphalt mixing plant operate better and create wealth.

To extend the service life of the dust collector bag in the asphalt mixing plant, maintenance can be carried out from the following aspects:
Daily operation and maintenance
Control operating parameters: strictly control the operating temperature, pressure and air volume of the dust collector to avoid excessively high or low temperature, excessive pressure fluctuations and air volume overload. Generally speaking, the operating temperature of the dust collector in the asphalt mixing plant should be controlled between 120℃-180℃.
Regularly check the cleaning system: ensure the normal operation of the cleaning device, such as the pulse valve, cylinder and other components are fault-free, and the cleaning time and cycle are set reasonably. Regularly check the pressure of the pulse injection system to ensure that the injection pressure is between 0.4-0.6MPa to achieve the best cleaning effect.
Timely deal with leakage problems: Regularly check the sealing of the dust collector, promptly discover and repair leakage points in pipes, flanges, inspection doors and other parts, and prevent dust-containing gas from short-circuiting and wearing the bags.
Regular maintenance
Check the appearance of the bag: Open the dust collector inspection door regularly to check whether the bag is damaged, deformed, blocked or stuck. If a small area of individual bags is found to be damaged, they can be repaired in time; if the damage is serious, new bags need to be replaced.
Clean the surface of the bag: According to the blockage of the bag, compressed air can be used regularly for reverse blowing and cleaning, or special cleaning equipment can be used to clean the surface of the bag to remove dust.
Replace wearing parts: Other wearing parts of the dust collector, such as the filter bag frame, venturi, etc., should also be checked and replaced regularly to ensure the overall performance of the dust collector.
Storage and installation
Proper storage: Unused bags should be stored in a dry and ventilated environment to avoid moisture, rain and direct sunlight to prevent aging of the bag material.
Standard installation: When installing the bag, be careful to avoid contact between the bag and sharp objects to prevent scratches. At the same time, ensure that the bag is firmly installed and well sealed with the flower plate hole to prevent the bag from being worn or falling off due to looseness.

Asphalt mixing plant is one of the main equipment for producing asphalt concrete. It can mix asphalt, gravel, cement and other materials together in a certain proportion to obtain the products required for highway construction. In order to ensure its operating effect, the asphalt mixing plant also needs to be powered on for trial operation before it is officially put into work.
The first step in commissioning is to run a single motor and check whether the current, steering, insulation and mechanical transmission parts are operating normally. After confirming that each motor and mechanical transmission parts are operating correctly, conduct a joint trial run. During the entire process, it is necessary to conduct patrol inspections of key parts. If any abnormal noise is found, the cause should be identified and eliminated in a timely manner.

Emulsified asphalt equipment plays an important role in road construction, and its production quality will directly affect the quality of facilities such as roads. In order to operate it better, we need to pay special attention to the following four points when applying emulsified asphalt equipment:
1. Before spraying, the emulsified asphalt equipment must check whether the position of each valve is correct. The hot asphalt added to the emulsified asphalt equipment must reach an operating temperature of 160~180℃. For long-distance transportation or long working time, a heating device can be used for insulation, but it cannot be used as an oil melting furnace.
2. When the asphalt in the emulsified asphalt equipment is heated by a burner, the asphalt height must exceed the upper plane of the combustion chamber, otherwise the combustion chamber will be burned.
3. The emulsified asphalt equipment cannot be filled too full, and the fuel filler cap must be closed tightly to prevent asphalt from overflowing during transportation.
4. This vehicle has two front and rear control consoles. When using the front control console, the switch must be turned to the front control. At this time, the rear control console can only control the lifting and lowering of the nozzle.
I believe that through the above description, everyone will be more comfortable when using emulsified asphalt equipment in the future. As for the relevant operating matters of the equipment, I will introduce them to you here today. If you want to know more information, please pay attention to the next explanation.

Modified Bitumen

Mechanism to avoid asphalt damage in asphalt mixing plant
1. Asphalt operators should undergo physical examination. Anyone suffering from conjunctivitis, skin disease or allergic reaction to asphalt should not engage in asphalt work.
2. Asphalt operators must apply protective ointment on exposed parts of their skin, and a first aid kit should be provided on the construction site.
3. The factory uniforms and protective equipment of asphalt operators are stored in a centralized manner and are prohibited from being worn home or entering collective dormitories.
4. The transfer of lumpy asphalt should usually be carried out at night and on cloudy days, especially during hot seasons. Small machinery should be used for loading and unloading, and it should not be lifted and transported directly by hand.

At present, the production efficiency of asphalt mixing plants in my country’s asphalt construction is far lower than the theoretical efficiency at the time of design. The low efficiency of organic waste gas treatment will not only delay the construction process and cause a waste of resources, but also the quality of the construction will not be very good. guarantee. In the construction of asphalt pavement, the main reasons for the low production efficiency of the asphalt plant are insufficient supply of mixture, resulting in loss of continuity of construction, improper equipment parameter settings, excessive overflow and other problems. Effective measures must be taken to deal with these problems, and ultimately improve production efficiency and ensure construction quality.

When we operate the asphalt mixing station, we should heat the equipment half an hour in advance, and the clear tank should be heated for at least two hours; and manually operate each part of the equipment to ensure that it is in good operation. status; it is also necessary to conduct relevant inspections on the valves and manually collect and return oil to ensure that the equipment can operate normally.
Several requirements for safe operation of asphalt mixing plants:

The actual operation steps of drying drum of asphalt mixing equipment: 1. Pay attention to routine inspection; 2. Proper operation steps; 3. Effective maintenance.
Drying drum is a cylindrical device specially used for heating and drying stones in asphalt mixing equipment. Proper application and maintenance of drying drum can maximize the performance of drying drum, increase its service life and reduce application cost. Let’s take a look at the actual operation steps below.
1. Pay attention to routine inspections
The asphalt mixing equipment drying drum has been tested and inspected before leaving the factory, but it will be subjected to vibration and vibration during transportation to the construction site. A comprehensive inspection should be carried out before use: check whether all anchor bolts are tightened; whether all key pins are properly driven; whether all drive devices are adjusted according to the manufacturer’s instructions; whether all pipe connections are appropriate and whether the three-way joints are reliable; whether the entire equipment is fully lubricated; start the motor and check whether all parts can rotate steadily in the correct rotation direction; whether the pressure gauge can work normally and whether the valve is adjusted to the correct working pressure; whether the burner ignition mechanism is available and whether the gate valve is open.
2. Correct operation steps
After the equipment is started, it is recommended to control the machine manually at the beginning, and then switch to the automatic control mode after achieving the required production volume and pouring temperature. The stone should be dried and have a stable moisture content as much as possible so that the stone can maintain a stable final temperature when passing through the drying drum. If the stones delivered to the drying drum change frequently and the moisture content changes each time, the burner should be adjusted frequently to compensate for these changes.
The stones directly from the crushed stone have a relatively constant moisture content, while the stones from the outdoor storage yard have a higher moisture content, and the moisture content of different piles varies greatly. Therefore, it is best for the stones to come from the same source.

Asphalt concrete, as the name implies, is a composite material formed by combining asphalt and concrete. Its main components usually include three categories, aggregate, filler and asphalt. Aggregate, as the basic skeleton of asphalt concrete, is mainly composed of crushed stones of different sizes. These crushed stones are carefully selected and proportioned to ensure the strength and stability of asphalt concrete. Filler usually refers to fine-grained materials such as stone powder, which are filled between crushed stones to increase density and improve overall strength. Asphalt is a binder that can tightly bond aggregate and filler together to form a solid whole. In the process of producing asphalt concrete, the proportion of various raw materials will be adjusted according to different formulas. These formulas are usually formulated according to the specific requirements of the road and the use environment to ensure that asphalt concrete can meet various complex road conditions. The place where this composite material is produced is a special asphalt mixing plant. This is an asphalt concrete mixing plant. The large trucks that we see every day to transport asphalt concrete come out from here. In the asphalt mixing plant, the entire production process is finely divided into multiple steps.
First, workers use loaders to deliver aggregates into cold silos. Cold silos are usually divided into several different chambers according to the size of aggregate particles, and each chamber corresponds to aggregates of different specifications. In this way, in the subsequent mixing process, the proportion of various aggregates can be accurately adjusted according to customer needs.
Next, these aggregates will be sent to the drying drum through a vibrating feeder and a belt conveyor. In the drying drum, the aggregates will be heated to a specified temperature by the high-temperature heat source provided by the burner. During this process, the spiral blades and sheep feed plates inside the drum will ensure that the aggregates are fully heated during rotation and remove the moisture in them. In this way, not only can the bonding strength between aggregates and asphalt be improved, but also the stability and durability of asphalt concrete after paving can be ensured.

Asphalt pavement is widely used, offering excellent performance in terms of surface roughness, driving safety, and comfort.
Fixed asphalt mixing plants were the most popular asphalt equipment for traditional road construction projects in my country. Back then, our road construction industry was in its infancy. Urban development was the first step in China’s reforms, so large-scale road construction projects were carried out across the city, and fixed asphalt mixing plants were the primary choice.
However, with the development of cities and the increasing maturity of municipal road construction, asphalt plant projects began to shift to surrounding areas and smaller cities. For construction contractors, asphalt mixing plants must operate outside their local area. If fixed asphalt mixing plants were still chosen, transportation, management, and time consumption would become increasingly high. This is why a variety of mobile asphalt mixing plants are increasingly being used for home projects.