How to maintain the driving device in asphalt mixing plant?

Many people think that since both asphalt mixing plants and asphalt mixing plants are equipment for producing asphalt, there should be no difference between them, even if there is, it is only in appearance and volume. However, asphalt mixing plants and asphalt mixing plants are different in even their basic structure and function.
First, let me introduce the basic structure of an asphalt mixing plant, which includes five major components: material supply system, metering system, mixing system, and electrical control system. In comparison, the structure of an asphalt mixing plant is simpler, without so many components, so its operation and maintenance will be simpler.

Oscillating screen. It can screen the heated aggregate according to the design. It requires fully enclosed, double oscillating motor replacement (replacing one substance for another (mostly the strong one takes the place of the weak)) eccentric shaft oscillation, each The layer screen is easy to install quickly. The service life of the drying roller and the power part is not less than 6000h. The roller can fully use heat, the material curtain flows evenly, and the inclination is required to be adjustable.

The plug valve is a rotary valve in the shape of a closure or plunger. After rotating 90 degrees, the channel opening on the valve plug is the same as or separated from the channel opening on the valve body to complete opening or closing. It is widely used in oilfield excavation, transportation and refining equipment, and such valves are also needed in asphalt mixing plants.
The valve plug of the plug valve in the asphalt mixing plant can be cylindrical or conical. In the cylindrical valve plug, the channel is generally rectangular; in the conical valve plug, the channel is trapezoidal. These shapes make the structure of the plug valve light and very suitable for blocking and connecting media and diversion.

Asphalt mixing plant is a complete set of equipment composed of many systems. It is widely used in the current society. Its components include batching system, drying system, combustion system, hot material lifting, weighing and mixing system and control system.
In the process of asphalt mixing, heating is an indispensable link, because there must be a system for heating in the asphalt mixing station, but the system generally fails for various reasons. So how should the heating system of the asphalt mixing station be improved? This article will briefly explain this issue.
Generally speaking, when the asphalt mixing station is running under low temperature conditions, the asphalt circulation pump and spray pump cannot operate normally, which will cause the asphalt in the asphalt scale to solidify, and then the asphalt mixing station cannot be produced. Therefore, the asphalt mixing station needs a heating system during operation.

Asphalt mixing equipment has a special function, which is that it can perform cyclic heating to make the asphalt product reach the best condition. But how does it achieve this function? Everyone is curious about this.

Continuous mix asphalt plant
It adopts forced mixer while has advantages of drum mix asphalt plant. Since there’s independent mixer, it is workable to equip filler supply system for adding in necessary filler or other additive agent according to user’s requirements. It is featured as strong adaptability, simple structure and high cost-effective.
Batch mix asphalt plant
Aggregate and asphalt are all weighed by static metering, with high metering accuracy. Similarly, it also has independent mixer, which is capable to add in various filler or other additive agent.

Certain failures cannot be avoided during the use of the asphalt mixing plant. For example, a malfunction of the cold material feeding device may cause the asphalt mixing plant to shut down. This may be due to a malfunction in the asphalt mixing plant or due to gravel or foreign matter being trapped under the cold material belt. If it is stuck, if it is a circuit failure, first check whether the motor control inverter of the asphalt mixing station is faulty and whether the line is connected or open.

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.

Asphalt mixing plant equipment is mainly composed of batching system, drying system, ignition system, hot material lifting, vibrating screen, hot material storage bin, weighing mixing system, asphalt supply system, granular material supply system, dust removal system, finished product hopper and automatic control system.
Components:
⑴ Grading machine
⑵ Vibrating screen
⑶ Belt vibrating feeder
⑷ Granular material belt conveyor
⑸ Drying mixing drum;
⑹ Coal powder burner
⑺ Dust removal equipment
⑻ Bucket elevator
⑼ Finished product hopper
⑽ Asphalt supply system;
⑾ Distribution station
⑿ Automatic control system.

Colored asphalt pavement is a kind of special pavement material that mixes colored particles into asphalt and then lays on the pavement

As an important production equipment in construction, asphalt mixing plant has high production investment. Therefore, production is very important during use, but daily maintenance is also very important. In addition to regular maintenance, routine maintenance is also essential. The editor of Asphalt Mixing Plant shares some key points of daily maintenance and scheduled maintenance;

Highways basically use asphalt materials, and asphalt mixing plants can be used to produce a variety of asphalt mixtures. So what are the mixing methods of asphalt mixing plants?
According to the mixing method, it can be divided into: continuous drum type and intermittent forced type. Continuous drum type, that is, the production is produced by continuous and uninterrupted mixing method, and the heating and drying of aggregates and the mixing of mixtures are carried out continuously in the same drum.
Forced intermittent type, that is, the heating and drying of aggregates and the mixing of mixtures are forced to be carried out periodically. The equipment mixes one pot at a time, and each mixing takes 45 to 60 seconds. The output depends on the equipment model.

Due to raw materials or usage, asphalt mixing plants will be subject to a certain degree of wear or other failures during daily use. If they are not controlled or repaired in time, the problem will be further exacerbated. For asphalt mixing plants, what are the ways to prevent wear and failure?
If the asphalt mixing plant is not treated in time after being worn, it may corrode once it is in contact with air, rainwater, etc. for a long time. If the parts of the asphalt mixing plant are severely corroded, the service life and normal operation of the entire equipment will be affected.

01 Overview of Large Asphalt Mixing Plants
In the field of high-grade highway construction, the assembly and installation technology of large asphalt concrete mixing equipment has become increasingly mature. To further improve work efficiency, we must conduct a detailed selection and matching analysis of large mixing equipment and its auxiliary equipment, and clarify the installation and commissioning process of the asphalt plant. Improving the efficiency of the mixing plant requires optimization of the selection and matching of mature equipment and the installation process; intermittent equipment has become the mainstream due to its advantages.
02 Installation Key Points
> Foundation and Equipment Installation
In the installation process of a large asphalt mixing plant, site selection and application technology are the primary considerations. At the same time, mastering the installation methods of the foundation and equipment is also crucial. Site selection and technology application are key during installation; comprehensive equipment commissioning and geological condition adaptation are the focus of foundation construction; and reasonable installation procedures help save costs.
When installing a large asphalt mixing plant, the first thing to focus on is the installation of the foundation and equipment. When selecting a site, ensure that the asphalt mixing plant is far away from residential areas and farmland to avoid interference. Before installation, comprehensive commissioning of the equipment is essential, including checking for scratches or wear, and lubricating the bearings according to regulations. Comprehensive equipment commissioning and geological condition adaptation are key aspects of foundation construction. Simultaneously, technicians must carefully inspect the equipment and electrical systems to ensure they are in good working order and promptly identify and eliminate potential safety hazards.
Furthermore, considering the large amount of materials involved in the mixing plant, surrounding resources must be comprehensively considered. Based on geological conditions, appropriate foundation types, such as solid foundations and soft soil foundations, must be selected. For solid foundations, appropriate treatment of the bottom layer is required after excavation, and attention must be paid to the construction procedure of the foundation concrete. For soft soil foundations, after layout and excavation, techniques such as staggered piles and vibratory retaining walls must be used to reinforce the foundation bottom.
During foundation construction, close monitoring of the pouring of the foundation for the main building and the dry aggregate section is necessary to ensure that the same horizontal plane does not exceed the standard height, thereby minimizing the risk of resonance. Through a reasonable installation procedure, equipment installation should radiate outwards from the main building on three sides, while efficiently completing the basic tasks of large cranes to achieve cost savings.
> Cable Installation With the increase in the number of mixing plants, the power consumption of the motors also increases accordingly, typically in the range of 500-1000 kW. Due to the large cross-sectional area of ??the power supply lines, cable trenches and concealed channels must be used for proper planning during installation. Cable layout must be rationally planned, emphasizing insulation and protection to avoid electromagnetic interference.
Cable surfaces must be carefully inspected to ensure there are no open circuits, and self-adhesive high-voltage tape should be used for secure connections. When controlling system circuits, signals should be shielded first, and then the layout should be carried out as required. To prevent external electromagnetic interference, the wiring must be concealed and protected, and safety warnings must be installed. This effectively ensures power supply and equipment safety.

“The secret to a good road lies in the asphalt mixing plant—precise proportioning, strict temperature control, and thorough mixing; every step determines whether the road surface can withstand the test of time. Choosing high-quality raw materials ensures a more comfortable and longer-lasting journey home.” During road construction and renovation, the quality of asphalt materials directly affects the road’s durability and smoothness, and the starting point for all of this often lies in a crucial link—the asphalt mixing plant.
A standardized and efficient mixing plant ensures precise asphalt mixture proportions, uniform temperature, and thorough mixing.
This is not merely a simple mixing of aggregates and asphalt; it involves rigorous production processes and quality control.
From raw material selection and heating to the transportation and temperature maintenance of the finished product, every detail affects the final road surface quality.
Therefore, before starting a renovation project, it is crucial to pay attention to the source and production standards of the asphalt mixture.
High-quality, stable raw materials are the foundation for building a good road. Road renovation is related to everyone’s travel experience. Choosing a reliable asphalt mixing plant and controlling the materials from the very beginning will make your journey home more comfortable and longer.

Asphalt mixing plants are now widely used on construction sites and in various engineering projects. They are applied in many areas and contribute to my country’s infrastructure development. However, several aspects need to be considered during use to ensure safer and more worry-free operation.
1. Maintain Standard Operating Procedures
This applies not only to asphalt mixing plants but also to other equipment. Mixing plants inherently carry certain risks, and any negligence can lead to significant losses. Therefore, it is crucial to operate according to correct procedures, following each step carefully. This ensures safe operation and effectively avoids other problems.
2. Adjust the Mixing Ratio Appropriately
The most important and core step in the application of an asphalt mixing plant is the mixing process. The mixing ratio of raw materials is crucial and must be kept within a reasonable range. Mixing should be completed according to actual needs; arbitrarily adding or reducing raw materials based on personal preference is not advisable, as this is considered non-standard operation. Furthermore, after ensuring proper mixing ratios, safety precautions must be taken during operation.
Asphalt mixing plants still play a vital role. To ensure safer and more worry-free operation of the mixing plant, it is essential to pay close attention to these precautions and understand them. Only in this way can other problems be prevented during operation, guaranteeing the safety of the mixing plant.

Asphalt mixing plant is a very practical engineering machinery. Especially in the road construction process, it plays an irreplaceable role. Due to its importance, in addition to ensuring its own quality, the use and maintenance of the equipment must be carried out normally. Let’s learn about the daily maintenance requirements 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.

The core of the asphalt mixing plant is its electronic control system. If it has problems, it will cause a lot of trouble to use. However, in actual use, the electronic control system in the asphalt mixing plant will inevitably encounter some problems and failures. How to solve it at this time?
If only the instrument display of the electronic control system of the asphalt mixing plant is inaccurate, it means that the weighing system may be affected by external forces; or the drift error of the sensor causes the weighing zero position or weighing interval to change; it may also be caused by sensor damage.

The HMA-B series forced asphalt mixing plant can produce reliable quality asphalt in various proportions. The product technology is mature, the operation is stable, the specifications are complete, the efficiency is high, the output is large, and the finished asphalt quality is good. It is suitable for various sizes and This type of road construction project has more obvious advantages in larger-scale road construction projects and high-grade highway construction projects.

Due to certain restrictions on the current development status and conditions, the profits of the domestic asphalt pavement construction industry are getting lower and lower. Therefore, in the process of using asphalt mixing plants for production, on the one hand, the quality of the products and customer requirements must be ensured. , on the other hand, it is necessary to reduce production costs. Therefore, cost management is very important, and refined management should be implemented in this regard.
First, for device management. Since equipment is the foundation and key of production, in the cost management of asphalt mixing stations, the management of equipment plays an important role in reducing costs. Only by managing the equipment well can the normal working status be ensured, which provides the necessary guarantee for the smooth progress of the project. In fact, in today’s highway projects, equipment costs account for a large part of the cost and profit. The huge profits after the construction of a highway will be greatly affected by the management of materials and equipment.

The asphalt mixing equipment mentioned here may also refer to an asphalt concrete mixing plant. At present, asphalt mixing equipment generally uses a complete set of equipment for mixing. So what are the benefits of using a complete set of equipment?
1. More effective.
In today’s industrial production, a complete set of asphalt mixing equipment can help improve production efficiency and ensure product quality. This is why even in a mixing plant, the equipment used is a complete set of equipment.
2. Ensure quality.
When mixing asphalt, a certain ratio is set. For this type of asphalt liquid used in different occasions, its ratio control has strict requirements. It is necessary to determine its mixing method and mixing time to ensure that the asphalt liquid is consistent with the production site. One of the advantages of a mixing plant is that the quality can be effectively controlled.
3. It can be sampled.
After mixing at the mixing plant, the quality inspector can sample and inspect to ensure that the mixed asphalt liquid meets the use requirements.
In short, asphalt mixing equipment will use a complete set of equipment, mainly to facilitate the later asphalt to meet production needs. Through the mixing plant, the mixing time and feeding sequence can be better controlled, so that the mixed product can meet different use requirements. And after using the archiving equipment, effective spot checks can be carried out, which can better ensure that the quality meets the construction requirements.

When using an asphalt mixing plant, first of all, it needs to have good stability. If it does not have good stability, then the asphalt mixing plant will not be able to meet the requirements of the project in terms of requirements or mass production. For road construction, the measurement requirements of asphalt concrete are relatively strict and precise. Only qualified asphalt concrete can make the quality of road construction meet the actual requirements. Therefore, the stability of the asphalt mixing plant is very important.
Secondly, the requirements for the asphalt mixing plant when in use are that the equipment should be as simple as possible on the basis of having all the required functions, and the overall operation should be reduced as much as possible. This can save a lot of manpower input during operation and save corresponding costs. Although it is simple, it does not mean that the technological content of the asphalt mixing plant needs to be reduced.
The above are the requirements that the asphalt mixing plant needs to meet when in use, because if each equipment wants its working effect to achieve the expected appearance, the equipment itself needs to have corresponding conditions. It must be a qualified and convenient equipment to ensure the efficiency and quality of the work.

With the changes in society and the transformation of the economy, real estate and construction are developing rapidly. When building and constructing houses, most of them use some equipment, such as mixing plants. The asphalt mixing plants produced by our company have a high level of mechanization and high production efficiency.
What is an asphalt mixing plant? It is a combined device used for centralized mixing of concrete, also known as a concrete prefabrication site.
With the development of municipal construction, the use of centralized mixing and the provision of commercial mixing plants have great advantages, so it has developed rapidly and created conditions for promoting concrete pumping construction and realizing the joint operation of mixing, conveying and pouring machinery. It is mainly composed of five major systems, including a mixing host, a material weighing system, a material conveying system, a material storage system and a control system, as well as other ancillary facilities. However, there are some faults in normal times. What are the specific ones in the gas source failure?

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.

Modified Bitumen

1. Causes of overflow
The main causes of spillage are:
1) Mixing materials in cold silo. Cold material warehouses generally have 5 or 4 warehouses. Each warehouse is required to contain pellets of a certain specification. If cold materials of different specifications are mixed or mistakenly loaded during the loading process, it will cause certain occurrences in a certain period of time. The shortage of pellets of one specification and the overflow of pellets of another specification can easily destroy the supply balance between hot and cold silos.

Asphalt mixing plants—also commonly referred to as asphalt mixing stations or hot-mix asphalt production equipment—are specialized industrial facilities used in road infrastructure construction. They primarily produce high-quality hot-mix asphalt mixtures and are widely used in various pavement projects, including highways, municipal roads, and airports. The equipment combines aggregates such as crushed stone, sand, and mineral powder with asphalt binder, mixing them in precise proportions under constant high-temperature conditions to produce wear-resistant, flexible, and long-lasting pavement materials.

For construction contractors, project managers, and infrastructure professionals, a thorough understanding of the performance, classifications, and key operating principles of asphalt mixing plants not only ensures a stable supply of asphalt mix and helps control construction costs but also fundamentally enhances the overall quality of pavement projects. This article will systematically explain the functions, operational processes, core components, equipment classifications, scope of application, advantages, and key selection criteria of asphalt mixing plants, providing a comprehensive overview of asphalt mixing equipment.

The asphalt mixing plant is a complete set of equipment for mass production of asphalt concrete. The whole machine of the equipment consists of multiple systems, such as batching system, drying system, combustion system, powder supply system and dust prevention system. Each system is an important part of the asphalt mixing plant.
The working condition of the combustion system of the asphalt mixing plant has a great impact on the whole system, which is related to the economic efficiency of the whole system, temperature control accuracy and flue gas emission indicators. This article will briefly introduce how to judge the working condition of the combustion system of the asphalt mixing plant.
Generally speaking, due to the complexity of the detection equipment and methods, there are no conditions to achieve in the working process of most asphalt mixing plants. Therefore, it is more convenient to judge the working condition by a series of relatively intuitive factors such as the color, brightness and shape of the flame. This method is very simple and effective.
When the combustion system of the asphalt mixing plant is working, when the fuel is burning normally in the drying cylinder, the user can observe the flame through the front of the cylinder. At this time, the center of the flame should be in the center of the drying cylinder, and the flame is evenly distributed around it and will not touch the cylinder wall. The flame is full. The whole outline of the flame is relatively clear, and there will be no black smoke tail.
The abnormal working state of the combustion system includes, for example, the diameter of the flame is too large, which will cause serious carbon deposits on the furnace tube and affect the subsequent working state of the combustion system.