Buffer high-precision dosing system

Buffer high-precision dosing system

System Applications:

The system can realize automatic quantitative filling or quantitative measurement ratio and storage tank level measurement of liquid products such as petroleum, grease and chemicals, and can simultaneously realize the computer networking of the production area and the management office, which has a wide range of practicality.

System features:

1. It only needs to be composed of flow meter, quantitative controller and flow breaking equipment, with simple structure, low cost, high efficiency, and system control accuracy ± 0.2%;

2. Tailor-made control box, put a quantitative controller in the box, simple wiring, generally no need to adjust after arriving at the site, flow meter and current breaking equipment have power supply in the control box, only need to provide AC220V to the control box;

3. The control box panel is equipped with "start", "stop" and "reset" buttons, and has a "status indicator" display, which can be done on site, so the display is intuitive, the operation is simple, convenient and easy to learn;

4. The quantitative controller can choose digital tube display and Chinese LCD display type to meet the needs of the site.

System Composition:

1. Flow meter: choose the appropriate flow meter according to the measurement medium, pipe diameter, flow range, explosion-proof, anti-corrosion, protection level and other parameters and site requirements, the accuracy of the flow meter is very important, it determines the overall control accuracy.

2. Quantitative controller: the quantitative controller is a kind of instrument that will process the mass, electromagnet, orifice, vortex, turbine and other flow sensing signals through signal processing, calculate, display and realize fluid batch control through the combination of output contacts and solenoid valves, through the equipment batch filling value and advance quantity, with the working mode of large and small valves or to achieve precise quantitative control, single pendulum, pump valve linkage and hand/self-support mode to facilitate the flexible configuration of users, to achieve single and batch filling control, the instrument is unfair with rich functions such as square square, accumulation, alarm, etc. It can also realize special functions such as button release alarm, sensor disconnection alarm, etc., and can output 4-20mA, RS485 communication, fully meet the needs of different users and different occasions.

3. Flow breaking equipment: It can be power equipment such as pumps, or equipment such as solenoid valves, electric valves, pneumatic valves, etc

Schematic diagram of system composition:

Schematic diagram of the operation terminal:

System Control Process:

1、 常态下，出料泵、电磁阀A、电磁阀B关闭状态；

2、 灌装桶到位，手动接通流量积算仪电源，流量积算仪显示设定值记忆数值，此时电磁阀A保持关闭状态；

3、 在操作终端上按启动按钮，时间T1开始计时（此时累计流量值应该为零，如保留上次记忆不为零，则此时自动清零），出料泵、电磁阀A打开，电磁阀B仍保持关闭，流体经过质量流量计和电磁阀B所在管路回到储罐，直到经过一定时间T1后流量计数据稳定（此时间可根据现场实际工况做调整）。  

4、 流量计数据稳定后（即时间T1计时截止），电磁阀A关闭，电磁阀B打开，出料泵保持打开，流体经过质量流量计和电磁阀A管路进行灌装。

5、 当灌装quantity达到定量控制仪表的预先设置值，关闭电磁阀B，关闭电磁阀A，关闭出料泵，一次灌装完成。

6、 移走灌装桶，对第二个灌装桶进行下一个循环。

Product selection and budget

Simple weighing and quantitative filling method

System features:

1. It only needs to be composed of electronic scale, weighing controller and flow breaking equipment, with simple structure and low cost.

2. High efficiency, system control accuracy ± 0.2%;

3. The measuring barrel forklift is repeatedly weighed electronically, which is very easy to damage;

Schematic diagram of system composition:

Product selection and budget

Metering tank weighing quantitative filling method

System features:

1. It needs to be composed of metering tank, weighing controller and flow breaking equipment, and the cost is high to increase the equipment;

2. Low efficiency, system control accuracy ± 0.2%;

Schematic diagram of system composition:

Product selection and budget