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High-precision weightlessness scale

A technology of loss-in-weight scale and weighing sensor, which is applied in the field of powder processing to achieve the effect of improving measurement accuracy and detection accuracy

Active Publication Date: 2015-07-29
无锡锐力普自动化设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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

Method used

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  • High-precision weightlessness scale

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Embodiment Construction

[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 contr...

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Abstract

The objective of the invention is to solve a problem that different physical properties of materials cannot be accurately metered by the same weightlessness scale under the premise of controlling cost to the greatest extent. In order to solve the problem, the invention provides the following technical scheme of a high-precision weightlessness scale which comprises a hopper, a control circuit, a material feeding motor, a material feeding device and multistage weighing sensors. The hopper is provided with two material discharging ports of a coarse material discharging port and a fine material discharging port. The fine parts of the materials are discharged via the fine material discharging port, and then the residual parts are discharged via the coarse material discharging port. A material feeding motor transmission material feeding device with the first-stage weighting sensor supports the hopper and is connected with the control circuit. The coarse material discharging port and the fine material discharging port are respectively provided with the second-stage weighing sensor. Two control units respectively sense relatively high and low break variable situations so that the weightlessness scale is enabled to more reasonably and accurately guide feedback of control signals, and thus measuring precision is enhanced.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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