A high-precision weight loss scale
A loss-in-weight scale, high-precision technology, applied in the field of powder processing, to achieve the effect of improving measurement accuracy and detection accuracy
Active Publication Date: 2017-09-15
无锡锐力普自动化设备有限公司
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[0004] The purpose of the present invention is to solve the problem in the prior art that the same loss-in-weight scale cannot provide accurate measurement for materials with different physical properties under the premise of controlling the cost as much as possible
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[0017] Such as figure 1 As shown, according to a preferred embodiment of the present invention, the high-precision loss-in-weight scale includes a hopper, a control circuit, a feed motor, a feed device, and a multi-stage load cell. The hopper has two outlets, a coarse discharge port and a fine discharge port. At the feed port, the material first discharges the small part through the fine discharge port, and then discharges the remaining part through the coarse discharge port. The feed motor with a primary load cell drives the feed device to support the hopper and is connected to the control circuit. The feed port and the fine discharge port are provided with secondary load cells 10 and 11 respectively, and the primary load cell and the secondary load cells 10 and 11 all constitute a separate distributed sensor network, and the primary load cell The sensors and the secondary load cells 10 and 11, the feed motor and the control circuit constitute a feedback loop, and the control...
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The purpose of the present invention is to solve the problem in the prior art that the same loss-in-weight scale cannot provide accurate measurement for materials with different physical properties under the premise of controlling the cost as much as possible. In order to solve the above problems, the present invention provides the following technical solutions: a high-precision loss-in-weight scale, including a hopper, a control circuit, a feeding motor, a feeding device, and a multi-stage weighing sensor. The hopper has a coarse discharge port and a fine discharge port. There are two outlets in the feed port. The material first discharges the small part through the fine discharge port, and then discharges the rest through the coarse discharge port. The feed motor with a primary load cell drives the feed device to support the hopper and communicate with the control. The circuit is connected, and the coarse discharge port and the fine discharge port are respectively provided with secondary weighing sensors. In the present invention, the two control units respectively sense the situations of large and small mutations, so that the weightlessness scale can guide the feedback of control signals more reasonably and accurately, and improve the measurement accuracy.
Description
technical field [0001] The invention relates to the field of powder material processing, more particularly, to a high-precision loss-in-weight scale. Background technique [0002] The loss-in-weight scale is a weighing device for intermittent feeding and continuous discharging. Since the loss control is carried out in the hopper, it can achieve high control accuracy and the structure is easy to seal. It is a big improvement compared to. It is suitable for controlling the batching of fine materials such as cement, lime powder, and coal powder. Its working principle is: according to the reduction rate of the weight of the material in the weighing bucket, the discharge screw machine or the electric vibrator is controlled to achieve the purpose of quantitative feeding, that is, the weight loss scale. When the material in the weighing hopper reaches the weighing lower limit position, the discharge screw machine will fix the output according to the current speed, and at the same...
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IPC IPC(8): G01G13/00G01G13/285
Inventor 刘立峰芮立国
Owner 无锡锐力普自动化设备有限公司