Plan configuration of an environmentally friendly river pebble sand production line with an hourly output of 100 tons

To design an environmentally friendly river pebble sand production line with an hourly output of 100 tons, you would need to consider the complete flow of the production process, including excavation, transportation, crushing, screening, washing, and dust control. Here's a general plan for such a line:

1. **Feeding**:

- **Feeder**: Install a vibrating feeder to ensure a steady supply of raw river pebbles into the crushing unit. The feeder should be capable of handling the required hourly feed rate of 100 tons.

2. **Primary Crushing**:

- **Jaw Crusher**: Use a primary jaw crusher to reduce the size of the river pebbles. This crusher should be capable of processing up to 100 tons per hour. The jaw crusher will output a coarse material that is approximately 20% smaller than the input size.

3. **Secondary Crushing**:

- **Cone Crusher**: The output from the jaw crusher can then be sent to a cone crusher for further reduction. The cone crusher will produce a finer material that is ready for the next stage.

4. **Screening**:

- **Inclined Vibrating Screen**: After the secondary crushing stage, install an inclined vibrating screen to separate the sand from the larger particles. The screen will have different deck sizes to ensure the production of multiple sand grades.

5. **Washing**:

- **Sand Washing Machine**: To ensure the sand is clean and free from impurities, a sand washing machine can be used. This machine will scrub the sand with water to remove dust and fine particles.

6. **Dryer**:

- **Rotary Dryer**: If the washed sand is to be dried, a rotary dryer can be installed. The dryer will remove excess moisture from the sand, making it suitable for various applications.

7. **Dust Control**:

- **Water Spraying System**: Throughout the production line, install a dust control system with spraying nozzles to keep dust levels down. This is particularly important in the crushing and screening areas.

8. **Conveying**:

- **Belt Conveyors**: Use belt conveyors to transport the material between the different stages of the production line. Ensure that the conveyors are designed to handle the required tonnage.

9. **Control Panel**:

- **Control Panel**: Install a control panel with necessary safety features and instrumentation to monitor and control the entire production line.

10. **Environmental Protection**:

- **Electrostatic Precipulator**: To further reduce dust emissions, an electrostatic precipulator can be installed at the exhaust of the crushers and screens.

- **Enclosure**: Enclose the crushers, screens, and other dust-producing areas to contain the dust and prevent it from escaping into the environment.

11. **Backup and Maintenance**:

- **Spare Parts and Maintenance**: Ensure that you have spare parts for the machinery and a maintenance plan in place to keep the production line running smoothly.

This configuration is a starting point and can be adjusted based on the specific requirements of your project, such as the quality of the raw material, the desired final product specifications, and environmental regulations. It's also important to work with experienced engineers and equipment suppliers to ensure that all components of the production line are properly designed and integrated for optimal performance and environmental compliance.