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Since 2012 - Smart Weigh is committed to helping clients increase productivity at a reduced cost. Contact us Now!
Author: Smartweigh–Multihead Weighter
Among the multihead weigher brand types, the high-precision multihead weigher can achieve an accuracy of 0.4% in the measurement of fly ash. The accuracy of the multihead weigher is inseparable from the attention to details in the process of installation and use. Today I will introduce it to you. Regarding the accurate operation of the high-precision multihead weigher, what should be paid attention to during the installation and use? 1. The multihead weigher platform is installed and fixed effectively and reliably: because the load cell is an elastic deformation element, the external vibration will interfere with it. The most taboo thing about the high-precision multihead weigher during the use process is the vibration of the environment. When the scale body is used, the scale body should be protected from vibration as much as possible; 2. There should be no airflow in the environment: In order to improve the weighing accuracy, the sensor selected by the multihead weigher that requires high precision is very sensitive, and any wind and grass will It has an impact on the weighing sensor, so controlling the indoor air flow in the installation environment of the multihead weigher is also one of the important ways to ensure the normal operation of the high-precision multihead weigher; , The lower equipment will interfere with the multihead weigher. The most ideal material used recently is smooth and soft silk; 4. The distance between the silo and the hopper: the shorter the connection distance between the large silo and the upper hopper, the better, especially For those materials with relatively strong adhesion, when the connection distance between the large silo and the upper hopper is longer, the more materials adhere to the pipe wall. When the material on the pipe wall adheres to a certain extent, once Falling down is a very big interference to the multihead weigher; 5. Minimize the connection with the outside world: any external weight acting on the multihead weigher scale body must be kept constant, in order to reduce the impact of external forces on the scale body; 6. The feeding speed should be fast: in order to make the feeding speed as fast as possible, it is necessary to ensure the smoothness of feeding during the feeding process. For materials with poor fluidity, in order to prevent them from bridging, the best solution is to add mechanical stirring in the large silo. The biggest taboo is the airflow breaking the arch, but the stirring cannot run all the time. The ideal is to maintain the stirring and feeding process. Consistent, that is, keep in sync with the feeding valve; 7. The lower limit value of the feeding material and the upper limit value of the feeding material should be set appropriately: the guiding idea of the setting is that the bulk density of the material in the hopper is basically the same between these two quantities . This can be obtained by observing the frequency change of the frequency converter. When the bulk density of the materials in the hopper is basically the same, the frequency of the frequency converter basically changes little.
Appropriate setting of the lower limit value and upper limit value of the feeding can improve the control accuracy during the feeding process, because it has been said that the multihead weigher is in static control during the feeding process. If the frequency of the inverter before and after feeding can be kept basically The measurement accuracy of the feeding process is basically guaranteed. In addition, in the case of ensuring that the bulk density is basically the same, try to reduce the number of feedings, that is, try to feed more materials each time. The two contradict each other and should be considered in a coordinated manner.
This is also the key to ensuring the accuracy of the feeding process; 8. The material delay time setting should be appropriate: the guiding ideology of the setting is to ensure that all materials have fallen on the scale body, and the shorter the setting time, the better. It has already been said that the multihead weigher is in static control during the feed delay time, so the shorter the time, the better. This time can also be obtained by observation. During the debugging period, the delay time can be set longer first, and observe how long the total weight on the scale body will not fluctuate (won’t become larger) after each feeding ends. stabilized (the total weight on the scale body decreases steadily), then this time is the appropriate refill delay time.
Are you satisfied with this article about the issues that need to be paid attention to during the installation and use of the high-precision multihead weigher? I hope this article is helpful to you.
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