In the production of aluminum industry, a lot of waste water will be produced, and the sources of the waste water are also various, such as water cooling and cleaning, etc. Generally, when cutting water cooling is performed, the waste water will contain a lot of waste debris impurities. The impurities need to be filtered during the treatment. The traditional filtration method is generally to use a static filter screen for filtering treatment. However, when one side of the filter screen contacts the impurities, it is easy to block the mesh, which affects the efficiency of filtration. When cleaning the filter screen, the staff needs to manually shut down the wastewater feed, which affects the cleaning efficiency. For this reason, we propose a wastewater recycling and treatment equipment for aluminum production.
3051 Insertion Barrel Differential Pressure Transmitter features
1. Density range: 0~1g/cm3; 0~2g/cm3; 0~3g/cm3; optional
2. Output: 4~20mA current signal; HART protocol
3. Power supply voltage: 16~30VDC, recommended DC24V
4. Accuracy: 0.1% (0.001g/cm3); 0.25%; 0.5%
5. Resolution: 0.001 g/cm3
6. Medium temperature range: 0~100℃; 0~200℃; 0~300℃
7. Temperature accuracy: 0.2℃
8. Ambient temperature: 0~80℃
9. Ambient humidity: 0~90%
10. The shortest center distance of the diaphragm of the intelligent differential pressure density meter is 500mm.
11. The intelligent differential pressure density meter is divided into side-mounted and top-mounted
How to install the plug-in barrel differential pressure transmitter?
1. Choose the right position: When the installation position is too close to the upstream of the production line, the unmelted material will wear to the top of the sensor. Generally speaking, the sensor can be located on the barrel in front of the filter screen, before and after the melt pump, or in the mold. First, a throttling device is installed in the pipeline. When the fluid passes through, a differential pressure is created before and after it, and the differential pressure has a relationship with the flow rate. With a certain relationship, the differential pressure is measured with a differential pressure transmitter, and the measured value of the flow is obtained.
Check the size of the mounting hole: the size of the mounting hole is not appropriate. During the installation process of the differential pressure transmitter, only the appropriate mounting hole can avoid the wear of the thread. Usually, we can use the mounting hole measuring instrument to measure the mounting hole. Fine detection to make appropriate adjustments. Measure the pressure difference between two points. Such as measuring tower equipment, the pressure difference between two points in the pipeline or the resistance loss between two points.
2. Avoid low temperature interference: During extrusion production, if the extruder has not reached the operating temperature before starting production, both the sensor and the extruder will be damaged to a certain extent. Before dismantling, it should be confirmed that the temperature of the barrel is high enough and the material inside the barrel is in a softened state. After proper calculation, differential pressure transmitter can also be used to measure the interface of liquid.
3. Keep it dry: Although the circuits are designed to withstand harsh extrusion processing environments, most sensors are also not waterproof and are not conducive to normal operation in wet environments. It is necessary to choose a special sensor with strong water resistance. Measure the weight of the liquid. When the liquid level H is constant, use the differential pressure transmitter to measure the size of the differential pressure AP, and then the weight T of the liquid can be obtained.
4. Keep the installation holes clean: Keeping the installation holes clean is mainly to prevent the molten material from being blocked, which is extremely important to ensure the normal operation of the equipment. Before the extruder is cleaned, all pressure sensors should be removed from the barrel to avoid damage. If this occurs, steps should be taken to raise the sensor in the mounting hole. When there is no special pressure or vacuum instrument, under certain conditions, differential pressure transmitters can be used to measure pressure (negative pressure through the atmosphere) and measure vacuum (positive pressure through the atmosphere)
5. Thorough cleaning: All differential pressure transmitters should be removed prior to cleaning the extruder barrel with a wire brush or special compound. When the barrel is heated, the sensor should also be removed and the top of the sensor should be wiped with a soft, non-abrasive cloth. The sensor hole should also be cleaned with a clean drill and guide sleeve.
insertion barrel differential pressure transmitter application
Sugar industry and wine industry: extraction of fruit juice, syrup, grape juice, etc., alcohol GL degree, ethane ethanol interface, etc.
Dairy industry: condensed milk, lactose, cheese, cottage cheese, lactic acid, etc.
Mining: coal, potash, brine, phosphate, the compound, limestone, copper, etc.
Oil refining: lubricating oil, aromatics, fuel oil, vegetable oil, etc.
Food processing: tomato juice, fruit juice, vegetable oil, starch milk, jam, etc.
Pulp and paper industry: black pulp, green pulp, pulp cleaning, evaporator, white pulp, caustic, etc.
Chemical industry: acid, caustic soda, urea, detergent, polymer density, ethylene glycol, sodium chloride, sodium hydroxide, etc.
