Material conveyance device and material conveyance method
A technology of material conveying device and frequency converter, which is applied in the direction of conveying bulk materials, conveyors, transportation and packaging, etc. It can solve problems such as pipeline resistance or pressure changes, material quality reduction, and inability to carry out stable air transportation, etc., to achieve power saving. Effect
Inactive Publication Date: 2015-02-25
MATSUI MFG
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Problems solved by technology
On the contrary, if the wind speed in the pipe is too fast, the friction between the material and the inside of the pipe will cause ripples or beard-like burrs in the material, which will reduce the quality of the material
In addition, as the type of material conveyed by the air changes, the specific gravity of the material will also change accordingly, which may lead to changes in the resistance or pressure of the pipeline, causing material clogging
At the same time, the amount of material supplied changes with the amount of material consumed, which changes the mixing ratio (the amount of material delivered per unit of air), and the wind speed or pressure in the duct also changes accordingly, making it impossible to perform stable air delivery.
Method used
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[0054] Hereinafter, the present invention will be described based on the drawings showing embodiments. figure 1 It is an explanatory diagram showing an example of the structure of the material conveying apparatus 100 of this embodiment. Such as figure 1 As shown, the material conveying device 100 has a frequency converter 1 as a material supply frequency converter, a motor 2, a material tank 3, a rotary valve 4, a catcher 6 as a storage part, a suction air source 10, a frequency converter 13, and a control unit 50 Wait. The suction air source 10 has a pump 11 and a motor 12 as a motor. Moreover, the material tank 3, the motor 2, and the rotary valve 4 which is a material container constitute a material supply part. In addition, between the discharge port of the rotary valve 4 and the catcher 6 provided under the material tank 3 , a pipe 5 for air transporting materials (for example, powdery or granular materials) is connected. Furthermore, the discharge port of the trap 6 ...
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Provided are a material conveyance device (100) and a material conveyance method that prevent blockage of a material and decreases in the quality of the material and thereby make it possible to pneumatically convey the material in an optimal state. The material conveyance device (100) is provided with an inverter (13) that converts the frequency of an alternating current power source and a suction air source (10) that comprises an electric motor (12) that is driven by the inverter (13). The material conveyance device (100) pneumatically conveys a material via a pipe (5) for conveying the material using the suction air source (10), and is additionally provided with a physical quantity detection unit (51) that detects a physical quantity that is related to the output of the inverter (13) and a control unit (50) that controls the air volume or air speed of the suction air source (10) on the basis of the physical quantity that is detected by the physical quantity detection unit (51).
Description
technical field [0001] The invention relates to a material conveying device and a material conveying method, which has a frequency converter and a suction air source, the frequency converter is used to change the frequency of an AC power supply, and the suction air source has a motor driven by a frequency converter; the material conveying device is used for conveying The pipeline of the material relies on the suction air source to carry out the air transport of the material. Background technique [0002] The traditional material conveying device collects and stores the material (for example, powder and granular material) conveyed by air from the material supply side through a catcher, and passes through the input pipe or storage tank installed at the discharge port of the catcher, etc., Air-conveyed material is supplied to molding machines, etc. [0003] In this type of material conveying device, a material source position valve is provided between the material hopper and t...
Claims
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IPC IPC(8): B65G53/66B65G53/04B65G65/48
CPCB65G53/66B65G53/26
Inventor 花冈一成山下宰司松田孝博
Owner MATSUI MFG