News - Page 11

The Difference Between Bucket-lifting and Inclined Belt Conveyor in Concrete Mixing Plants

2024-08-08

Generally speaking, the aggregate conveying of concrete mixing stations often adopts belt conveyors or bucket lifting. These two methods have their own characteristics. This article explains the difference between the two in detail. I. Bucket-lifting 1. Working principle The bucket-lifting uses a brake winch and is pulled through a pulley block and a wire rope to achieve the purpose of lifting the bucket. In large and medium-sized mixing stations, double wire rope transmission is often adopted; in small mixing stations, most of them directly adopt a suspended single rope transmission or a single rope transmission guided by a pulley installed on the bucket. 2. Features The advantages of bucket lifting are small footprint and simple structure, which are suitable for narrow construction sites. Schematic diagram of bucket-lifting and inclined belt conveyor: II. Inclined belt type 1. Working principle The belts are connected into a closed loop, and they are tightened with a tensioning device. Driven by the motor, the friction between the conveyor belt and the drive roller makes the conveyor belt run continuously, thereby achieving the purpose of transporting...

How to Deal with the Electrical Control System Failure of Concrete Mixing Station

2024-08-07

In the long-term daily production and operation of concrete mixing station, it is inevitable that there will be failures in mechanical equipment and control system. Today, the auxiliary mechanical mixing station mainly tells you about the possible faults of the electrical control system of the mixing station and the countermeasures! 1. PLC cannot communicate Due to poor contact of communication line or communication network connector, or damage of communication and expansion module, the PLC electronic system fails. Therefore, the communication line, communication connector and communication expansion module can be inspected and replaced. 2. The digital display meter is garbled or the power supply is out of phase When the digital display meter is garbled, it can be checked step by step and then replaced; The lack of phase of external power supply is due to the burnt contact of contactor or circuit breaker, the current of circuit breaker is not set properly or the burnt contact of contactor causes the lack of phase; Elimination method: the power supply can be checked and updated. If the circuit breaker is found to...

Common Failures of Concrete Mixing Station-Reversing Valve Failure & Component Failure

2024-08-06

1. Reversing valve failure The faults of the reversing valve include: the valve can not be reversed or the reversing action is slow, the gas leaks, and the electromagnetic pilot valve is faulty. (1) The reversing valve can't reverse or the reversing action is slow, which is generally caused by poor lubrication, the spring being stuck or damaged, oil pollution or impurities stuck in the sliding part, etc. In this regard, we should first check whether the oil mist device works normally; Whether the viscosity of lubricating oil is appropriate. If necessary, replace the lubricating oil, clean the sliding part of the reversing valve, or replace the spring and reversing valve. (2) After long-term use, the reversing valve is prone to wear of the sealing ring of the valve core and damage of the valve stem and valve seat, resulting in gas leakage in the valve, slow action of the valve or abnormal reversing. At this time, the sealing ring, valve stem and valve seat should be replaced, or the reversing valve should be replaced. (3) If the inlet and...

Cylinder Failure-One of the Common Faults of Concrete Mixing Station

2024-08-06

Due to improper assembly and long-term use of the cylinder, the pneumatic actuator (cylinder) is prone to internal and external leakage, insufficient output force and unstable action, poor cushioning effect, piston rod and cylinder head damage and other failures. (1) Internal and external leakage of the cylinder is generally caused by eccentric installation of the piston rod, insufficient supply of lubricating oil, abrasion or damage of the sealing ring and sealing ring, impurities in the cylinder and scars on the piston rod. Therefore, when the cylinder leaks internally and externally, the center of the piston rod should be readjusted to ensure the coaxiality of the piston rod and the cylinder. Always check whether the oil mist sprayer works reliably to ensure good lubrication of the actuator; When the sealing ring and sealing ring are worn or damaged, they must be replaced in time; If there are impurities in the cylinder, they should be removed in time; When there are scars on the piston rod, replace it with a new one. (2) The output force of the cylinder is insufficient and...

Air Source Fault-One of the Common Faults of Concrete Mixing Station

2024-08-06

(1) The faults of air compressor include: damage of check valve, serious wear of piston ring, damage of air inlet valve and blockage of air filter, etc. If you want to judge whether the check valve is damaged, just turn off the power supply after the air compressor stops automatically for more than ten seconds, and turn the big belt wheel by hand. If you can rotate it easily for one week, it shows that the check valve is not damaged. On the contrary, the check valve has been damaged; In addition, it can also be judged from the exhaust situation of the exhaust port under the automatic pressure switch. Generally, after the air compressor stops automatically, it should stop exhausting after about ten seconds. If it stops exhausting until the air compressor starts again, it means that the check valve has been damaged and needs to be replaced. When the pressure of the air compressor rises slowly and is accompanied by oil string phenomenon, it shows that the piston ring of the air compressor has been seriously worn and...

How to Transport Concrete with Transport Tankers After Production

2024-08-06

1. The speed of service road: 24 km/ h, taking the round-trip transportation distance of 24 km as an example. 2. Loading time of concrete mixer truck: 1/6 hour/car for HZS120 and 7/30 hour for HZS90. 3. Unloading time of concrete mixer truck: 5 minutes. 4. Every time one truck of concrete is delivered, it takes 1.25 hours for HZS120 and 1.32 hours for HZS90. 5. The number of vehicles to be transported within 6 hours: HZS120 6×1/1.25≈5 (vehicles) and HZS90 6×1/1.32≈4 (vehicles). 6. 320 m3 of beam pouring concrete is completed within 6 hours, and the number of vehicles to be transported is 320×1/6.5≈50 (vehicles). 7. The allocation of concrete mixing truck should be considered. Due to the service road transportation, there should be a certain empty tank rate. HZS120 mixer station, with a host capacity of 2m3, should be equipped with a 9 m3 concrete mixer truck for loading four plates of materials. The transportation distance is about 12KM, and 320 m3 of concrete is poured on the beam within 6 hours, which is suitable for 10~11 concrete...

What Should be Paid Attention to When Buying Concrete Mixing Station

2024-08-06

1. Performance label of construction concrete From this, we can choose what kind of mixing machine to use. For example, in water conservancy projects, the forced mixing host must be selected. In addition, batching stations and storage bins should be selected according to the types of concrete materials that can be mixed. 2. Task quantity and construction period of concrete construction Use these two parameters to select the mixing station with large specifications. Let the total task of concrete be m; The number of concrete pouring days is T; The working hours per day are h; If the utilization coefficient is K, the specification of the mixing station should be X=M/(T*H*K), where K is 0.7-0.9. In the selection, the transportation condition of finished concrete should also be considered. Such as: direct pumping or vehicle transportation. The volume of conveying vehicles is also an important basis for determining the type of mixing station. 3. Construction environment and construction object When choosing to buy concrete mixing station, the influence of construction object and construction environment should be fully considered, so as to...

Components of a Standardized Concrete Batching Plant

2024-08-02

A standardized concrete batching plant is essential for producing high-quality concrete efficiently. This article explores the key components that make up a standardized concrete batching plant, ensuring you have a comprehensive understanding of each part. 1. Aggregate Batching Machine The aggregate batching machine is a crucial component, responsible for storing and measuring different types of aggregates, including sand, gravel, and crushed stone. Accurate measurement and proportioning of these materials are essential for a consistent concrete mix. 2. Conveyor Belt A conveyor belt plays a vital role in transporting the measured aggregates from the batching machine to the mixer. It ensures a continuous and smooth flow of materials, contributing to the efficiency of the concrete production process. 3. Cement Silo The cement silo is a storage tank for cement, ensuring a steady supply during the batching process. Equipped with a dust collector, it minimizes environmental pollution and maintains clean air quality around the plant. 4. Weighing System The weighing system is equipped with load cells and digital scales to measure the weight of each material precisely. This includes aggregates, cement, water,...

Small Concrete Batching Plant: Advantages and Pricing Explained

2024-08-01

In modern construction projects, small concrete batching plants have become increasingly popular due to their unique advantages. This article will provide a detailed overview of the advantages of small concrete batching plants and their pricing, helping you make an informed decision when choosing equipment. Advantages of Small Concrete Batching Plants Pricing of Small Concrete Batching Plants The price of small concrete batching plants varies depending on the brand, model, configuration, production capacity, and additional features. Here is an approximate price range for reference: Actual prices should be confirmed based on specific needs and equipment configurations. It is recommended to compare multiple options and choose the equipment that best meets your project requirements. How to Choose the Right Small Concrete Batching Plant Conclusion Small concrete batching plants have become the preferred choice for many small to medium-sized projects due to their compact footprint, easy mobility, simple operation, low investment cost, and easy maintenance. We hope this article has provided you with a comprehensive understanding of small concrete batching plants, enabling you to choose the best equipment for your needs and ensure...

Difference of Feeding Mode of Diesel Concrete Mixers

2024-08-01

Introduction JZC series diesel concrete mixer is a self-falling concrete mixer with double-cone mixing drum for forward mixing and reverse discharging. Each tank can mix 350 liters, 500 liters, 750 liters of concrete (referring to the volume of compacted concrete), and can produce 6-22 cubic meters per hour. The diesel concrete mixers are suitable for general construction sites, roads, bridges and small and medium-sized concrete component factories. Difference The difference between the diesel concrete mixers is the control method of the hopper lift. The 350 liters concrete mixers has two types: wire rope and hydraulic, while the 500 liters concrete mixers and above models only have hydraulic. The JZC500-DH diesel drum concrete mixers can be easily disassembled and transported. It is the best mixer for various areas without power supply and construction sites where it is inconvenient to introduce power lines.