What procedures and detailed steps are needed to build a new concrete mixing station?

To bid for a ready-mixed concrete professional enterprise, the development and reform commission, the industrial and commercial commission, the planning bureau and other departments must first establish a project, register and select a site. , and then according to the level of qualification standards submitted to the county construction bureau for approval, the municipal construction bureau for approval. This bid is the third-level qualification of ready-mixed concrete professional enterprises, and the standard is:

(1), the annual output of commercial concrete is more than 50,000 cubic meters, and the product quality is qualified;

(2) The enterprise manager has more than 3 years working experience in project management, the technical director has more than 2 years working experience in commercial concrete production, and has intermediate or above titles in related majors, and the financial director has primary or above accounting titles. There are not less than 8 engineers and economic managers with professional titles, including not less than 5 engineers and technicians, and not less than 2 engineers and technicians with intermediate titles or above;

(3) The registered capital of the enterprise is more than100000 yuan, and the net assets of the enterprise are more than120000 yuan;

(4) The highest annual project settlement income of the enterprise in recent three years is above150,000 yuan;

(5), equipped with 1 set of more than 30 cubic meters/hour mixing system, not less than 5 concrete transport vehicles and not less than 1 set of delivery pumps;

(6) The enterprise has a special concrete laboratory.

Extended data:

Concrete mixing station is divided into four parts: sand and gravel feed, powder (cement, fly ash, expansion agent, etc. ) feeding, water and additives feeding, conveying, mixing and storage. The workflow is shown in figure 1. After the mixer control system is powered on, it enters the man-machine dialogue interface, and the system is initialized, including formula number, concrete grade, slump, output, etc.

Start the gravel belt motor to feed the metering hopper; Open the butterfly valve of the fly ash and cement tank, and start the screw motor to convey the fly ash and cement to the metering hopper; Open the control valves of the water bin and the admixture pool to make water and admixture flow into the metering hopper. After the metering meets the set requirements, open the metering hopper door, and the ingredients will be stirred in the started mixer. When the mixer door is opened at the set time, the concrete will enter the mixer truck that has received the materials.

1. Each cylinder, control valve and motor shall be operated according to the requirements of concrete mixing process, and the control of each cylinder, control valve and motor must be accurate, stable and reliable.

The control system has two working modes, automatic and manual, which are independent and mutually restrictive.

The system has good anti-interference ability and perfect alarm self-protection function.

By communicating with the computer, the working status and fault alarm of the system can be displayed.