Automatic accurate weighing device for powdery material

A powdery material and material weighing technology is applied in the field of powdery material automatic weighing device, which can solve the problems of inconsistent batching amount, insufficient detection accuracy, inaccurate measurement, etc., to improve production quality, improve operating environment, and achieve good benefits. Effect

Inactive Publication Date: 2008-01-16
李红
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  • Abstract
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  • Claims
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Problems solved by technology

The powder material weighing device generally has the shortcomings of insufficient detection accuracy, coupled with vibration interference during the operation of the device, inaccurate measurement, inconsistent ingredients, etc., it is difficult to ensure the further improvement of the quality of the friction plate products produced

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  • Automatic accurate weighing device for powdery material

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Embodiment Construction

[0009] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0010] The powdery material can be a single material or a mixture of various materials. Taking the friction material in the production of brake pads as an example, the automobile friction material prepared according to the specified ratio is put into the raw material box 1. The existing device adopts the method of adding The pressure method uses compressed air to blow the powdery material in the raw material box 1 into the metering equipment, causing dust and toxic substances to leak out, affecting the operation of the device, seriously polluting the environment, and is not conducive to people's physical and mental health. The present invention is provided with a vacuum pump 6 to vacuum Tank 5 is operated under negative pressure, which effectively prevents dust from leaking out; vacuum suction tank 2 is provided with a high-level switc...

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Abstract

The invention discloses a powdery material accurate weighing device, which comprises a raw material tank and a weighing cup. The invention is characterized in that the feeding process is operated under vacuum, a high-level switch and a low-level switch are disposed above a vacuum intake tank, an auger conveying mechanism is disposed below the vacuum intake tank, the spiral pitch has two classes, the motor speed has two classes, a optical fiber grating pressure sensor is disposed below a weighing bunker, an automatic reverse turning bed is disposed in the weighing bunker, the signal from a material level switch and the optical fiber grating pressure sensor is transmitted to PLC, and the PLC outputs control signal to a motor of a vacuum pump, vacuum air passages and material control valves. The invention remarkably improves the weighing accuracy from above plus or minus 10 g error of the existing automatic weighing to within plus or minus 1 g error, even lower. It has the advantages of whole sealing operation under vacuum condition, no dust pollution, improved operating environment, accurate weighing, and good consistency. The invention is helpful for further improving the production quality of friction wafer product; and has high spreading and application values, and good market prospect.

Description

technical field [0001] The invention relates to an automatic weighing device for powder materials. Background technique [0002] Weighing devices for powdery materials are widely used, such as weighing devices for grain, chemical fertilizers, chemical dyes, and medicines, which have certain accuracy requirements. However, the weighing requirements for friction materials in the production of automobile brake pads are higher, because brake pads are used to ensure the safety of automobiles. If there is a problem with the quality of the important parts, it will lead to accidents, which will seriously endanger the lives and property safety of the people. One of the key factors affecting the quality of brake pads is the accuracy of the friction material weighing device in the production of brake pads, and the weighing quality must be consistent and accurate. Inaccurate and inconsistent weighing will lead to differences in the molding of the friction lining after molding, resultin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G13/00G01G13/24G01G13/295G01G13/34
Inventor 李红周永春张林葵周淑辉张从葵朱秀慧
Owner 李红
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