The Manual of Portable Concrete Batch Plant

1. Original source: https://www.concretebatchplanthm.com/ The Manual of Portable Concrete Batch Plant Abstract: The mini mobile concrete batching plant combines the storage, weighing, conveying, mixing, unloading and automatic control systems on the chassis. What are its main parts and how to operate it? Learn more. Why Is Mini Mobile Concrete Batching Plant So Popular The mini mobile concrete batching plant combines the storage, weighing, conveying, mixing, unloading and automatic control systems on the chassis. It has been popular in recent years. Do you know why? 1. Easy to move The biggest feature of mobile mixing plant is that it is easy to move. When transferring, apart from the screw conveyor and the cement silo, the front end of the whole mixing plant can be hauled and moved, and the others do not need to be disassembled. If there are disassembled parts, they can be taken with the mobile concrete plant. 2. Quick disassembly and assembly Due to the integrated design of the main structure such as the mixer and batching machine,the disassembly and assembly are quick and convenient, which usually take four hours to install it. 3. Less land space Compared with stationary concrete plant, the mobile batching plant has a smaller area for loading materials, and the site is reasonably used. 4. Simple storage management Since the main structure of the mobile mixing plant is integrated, the storage and management of the whole station are simple, which is easy to use and maintain. 5. High measurement accuracy 1

2. Original source: https://www.concretebatchplanthm.com/ Although its structure is relatively simple, the quality and accuracy of the equipment are still reliable. Aggregate, cement, water and admixtures have their own electronic weighing systems, and they can achieve accurate measurement through advanced control modes and mechanical structures. 6. Good mixing effect The main machine used in the mobile batching plant is still the JS twin shaft concrete mixer, which has the advantages of good mixing quality and fast speed. The Main Parts of Small RMC Plant The ready mix concrete refers to the concentrate mixed concrete for commercial sale. Its quality is more stable than that of on-site mixed concrete. It is conducive to saving cement, environment protection and the application of new technologies. With the development of the construction industry, large-scale projects, high-rise buildings and new construction methods spring up. They have higher and stricter requirements for the quality of concrete. That’s why we recommend ready mix concrete plant for sale. 2

3. Original source: https://www.concretebatchplanthm.com/ In the whole process of ready-mixed concrete production, transportation and construction, quality management and control should be at the center, and all aspects must be fully guaranteed. The small RMC plant cover three parts: raw material storage, raw material measurement and concrete mixing: 1. The process layout of ready-mixed concrete production is mainly determined by the form of the raw material metering system (especially the aggregate metering). 2. Its basic components are: feeding system, metering system, mixing system, electrical system and auxiliary equipment (such as air compressor, water pump, etc.), It is used to complete the transportation, loading, storage, batching, weighing, mixing and discharging of concrete raw materials. 3. The metering system is the core of ready-mixed concrete production. According to national standards, the weight method is usually used in the production of ready-mixed concrete. The measurement accuracy directly affects the quality of ready-mixed concrete, and the 3

4. Original source: https://www.concretebatchplanthm.com/ measurement speed directly affects the production capacity of ready mix concrete plant. The Theoretical Productivity of Portable Concrete Batch Plant The theoretical productivity is an important parameter of the portable concrete batch plant. It is an main method for customers to distinguish different models. For example, the theoretical productivity of YHZS35 is 35 m3/h. The theoretical productivity has almost become the ID of different types of small concrete plants. However, many customers have a lot of questions about theoretical productivity. How is the theoretical productivity calculated? In fact, the theoretical productivity is a kind of production efficiency of the concrete mixer calculated according to the theoretical "calculation conditions". It is calculated within one hour based on the output of the concrete mixer without considering the actual concrete mix ratio and the amount of water and admixtures.Therefore, theoretical productivity has a very good reference value. Theoretical productivity calculation method: the 4

5. Original source: https://www.concretebatchplanthm.com/ theoretical output volume of the concrete mixer (m³) x 3600 (s)/theoretical production cycle (S). Is the theoretical productivity the actual productivity? From the above information, we can easily find that the calculation of theoretical productivity does not consider the actual situation, such as the actual raw material mix ratio, water consumption, and admixture addition amount,etc. It also does not take into account the actual mixing cycle, concrete plant management and concrete truck scheduling. Therefore, we can not simply regard the theoretical productivity as the actual productivity. Take the YHZS25 mini mobile batching plant. Its theoretical productivity is 25 m3/h. In fact, it is difficult to ensure that the output volume reaches it. The mixing loss can only be obtained in actual production. The second is the management of the mixing plant and the scheduling of the concrete truck. This will definitely make the production cycle longer than 60s. According to industry average research, the actual production cycle is about 72s. What is the meaning for the customers by having a knowledge of the theoretical productivity? In many cases, we find that most of the customer's inquiries are about the output. If the customer actually needs a mixing plant of 20 m3per hour, then we may recommend YHZS25 mini mobile batching plant for the customer. What Is Hourly Power Consumption of Small Concrete Batch Plant Before building a small concrete batch plant, the customers usually consult the power consumption, cost budget and the return on investment of the mixing plant. The power consumption of the small concrete batching plant is to add the power of the concrete mixer motor, the power of the concrete batching machine, the power of the screw conveyor and the power of the electric control system together. The result will be the hourly power consumption of the complete concrete mixing plant. 5

6. Original source: https://www.concretebatchplanthm.com/ There are different models of concrete batching plants and each model has different power consumption. If you have to calculate the power, add up all the motor power of a mixing plant. How many motors is used in a small concrete batch plant? 1. The concrete mixer has three motors, namely mixing motor, hoisting motor and water pump motor. These three motors add up to 25kw to 90kw. 2. The motor for the belt conveyor. 3. The motor installed on the screw conveyor is about 5.5-19kw. 4. The motor for the pump is about 11kw. 5. The motor on the dust collector is about 0.5kw. 6. The motor on the air compressor is about 4kw. What’s the hourly power consumption of the small concrete plants? The overall power of YHZS25 small concrete plant is 55 kw.H. The overall power of YHZS35 mobile concrete plant is 70 kw.H. The overall power of YHZS60 portable concrete plant is 85 kw.H. The overall power of YHZS60 mobile concrete mixing plant is 105 kw.h. Haomei Machinery has many models of small concrete plants other than the mobile concrete batching plant. We also have rich models of stationary concrete plant. 6

7. Original source: https://www.concretebatchplanthm.com/ The Pneumatic System Analysis of Portable Batching Plant No matter it is a portable batching plant or a stationary concrete plant, many mechanisms are driven by air pressure. Pneumatic drive has the advantages of low cost and no pollution, avoiding oil leakage and dust staining. The pneumatic system consists of a manifold valve, a filter pressure reducing valve, a flow aid air cushion, a pneumatic butterfly valve, a pneumatic ball vibrator, an air compressor,gas storage tank, air cylinder, air pipe,etc. Its working principle is that the high-pressure gas from the air compressor is processed by the triple air source component and enters the solenoid valve. When the solenoid valve receives the control signal, the corresponding circuit is connected, and the compressed air enters the driving element (cylinder, vibrator,flow aid air cushion) to complete the corresponding actions such as the open and close of the material door. When the pneumatic components are working separately or simultaneously, the working 7

8. Original source: https://www.concretebatchplanthm.com/ pressure should be greater than 0.4MPa. The air compressor is a main kind of the pneumatic system of the portable batch plant. There are two control modes for air compressors: air-regulated control (semi-automatic) and electrical control( full-automatic). Regulated air compressors use a pressure regulating valve to control the loading or unloading of the compressor. The electrical air compressor is generally used in systems with small air consumption and infrequent loading and unloading. The portable batching machine is also a main kind of wet batch concrete plant. As a concrete plant manufacturer, Haomei Machinery has different kinds of wet batch concrete plants. The Electrical Control System of Mobile Mixing Plant The electrical control system to the mobile mixing plant is what the brain to the human being. In order to ensure the quality and efficiency of mobile concrete mixing plant, its electric control system must be strictly configured. The electric control system of the mobile batching plant includes two parts: the hardware structure and the software structure. It adopts the upper computer and the lower computer. The software of the host computer basically fulfills the requirements of measurement and control of the whole concrete mixing plant. The operator can understand all the operating conditions of the mixing plant on the computer screen in the control room, including various alarms through the host computer.The operator with the authority can modify the formula parameters and moisture content in the control room, and all the switches between automatic and semi-automatic are free. Each control button and each automatic and semi-automatic switch button need further confirmation or cancellation to prevent misoperation. The lower computer is a PLC controller. The system adopts a modular design, including A/D data processing, control parameter processing, input and output control, batching process control, feeding process control, mixing operation control, and upper computer inching control. It is written directly with ladder diagram. Within the scope allowed by the program framework, the operator can arbitrarily increase the variety of ingredients or set the feeding sequence. For example: after the aggregate is first poured into the middle hopper, it is poured into the mixer in sequence with the powder and water to start mixing. 8

9. Original source: https://www.concretebatchplanthm.com/ As a China mobile concrete batching plant manufacturer, Haomei Machinery has been devoted to improve its design to get more stable working performance. How to Calibrate the Scale of Small RMC Plant Generally speaking, the measurement accuracy of the small RMC plant is very high. But in the actual use process, its accuracy may be affected due to the disassemby and assembly of the equipment. At this time, it is necessary to calibrate the scale. How to make it? 1. Static measurement verification When these situations occur in the small concrete batching plant for sale, static measurement verification is required, and records should be made:  There is at least once verification a quarter under normal production conditions.  When it is put into use again after being stopped for over 1 month(including 1 month), it needs calibration.  When an abnormal situation occurs, we need to do that.  There is a large scale production. 9

10. Original source: https://www.concretebatchplanthm.com/ The loading value of the static measurement verification should be consistent with the actual production situation, and the loading should be carried out in grades, and the number of grades should not be less than 5. When the static verification result exceeds the verification error range of the statutory metrology department, the reason must be found out and the statutory metrology department must re-verify. 2. Regular calibration of weighing scales According to the relevant national regulations, the weighing scale needs to be calibrated regularly; when the external equipment or use conditions of the small RMC plant change, the electronic weighing scale must be calibrated before using the electronic weighing scale. As a small concrete plant manufacturer, the calibration of the weighing scale of the small concrete batching plant must be carried out by personnel with this responsibility and authority. 10