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Explosion-proof weighing indicator, explosion-proof weighing system and operation method of explosion-proof weighing indicator

A display instrument and weighing technology, applied in the direction of weighing indicating device, signal transmission system, detailed information of weighing equipment, etc., can solve problems such as unsatisfactory, affecting personal safety, explosion or deflagration, etc., to reduce cables, Effects of Low Data Rate, Low Power Consumption

Pending Publication Date: 2018-10-26
CHANGZHOU WEIBO WEIGH EQUIP SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Weighing equipment is widely used in the fields of medicine, food, chemical industry, etc. In the process of industrial production, combustible substances are evenly mixed with air or oxygen. After the concentration reaches the explosion limit, there is an ignition source, and the minimum ignition energy or high temperature is present, reaching its ignition. Ignition temperature, that is, there is the possibility of explosion or deflagration; the danger of explosion or deflagration is self-evident and seriously affects personal safety
As an extremely commonly used tool in the industrial field, its safety performance is also extremely important. The existing weighing display equipment cannot meet the requirements for use in the P1 area (referring to places where explosive gas atmospheres may occur during normal operation), mainly There are two reasons, one is that the transmission of the weighing data needs cables for transmission, and the other is the explosion-proof of the power supply. How to solve the above problems and provide a simple, safe and reliable explosion-proof weighing display is a problem for those skilled in the art. Urgent consideration

Method used

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  • Explosion-proof weighing indicator, explosion-proof weighing system and operation method of explosion-proof weighing indicator
  • Explosion-proof weighing indicator, explosion-proof weighing system and operation method of explosion-proof weighing indicator
  • Explosion-proof weighing indicator, explosion-proof weighing system and operation method of explosion-proof weighing indicator

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Experimental program
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Effect test

Embodiment 1

[0021] Such as Figure 1 to Figure 3 As shown, the explosion-proof weighing display instrument of this embodiment includes a display panel 4, a keyboard panel 5, a PCBA main board circuit board 21, a sealed casing, a battery 8, a battery sealed explosion-proof casing 6, an instrument bracket 1, and an intrinsically safe power supply connection harness 7. The sealed casing includes a front cover 2 and a rear casing 3 that are sealed and fitted. The display panel 4 and the keyboard panel 5 are fixedly arranged on the front end of the front cover 2. The rear end of the front cover 2 and the rear casing 3 are made of silicon rubber. The sealing ring 22 is sealed and matched; the PCBA motherboard circuit board 21 is placed in the sealed casing, the display panel 4 and the keyboard panel 5 are electrically connected to the PCBA motherboard circuit board 21 respectively, and the rear casing 3 is provided with an explosion-proof connector 34 and a motherboard wiring harness explosion-p...

Embodiment 2

[0026]A weighing system, comprising at least two explosion-proof weighing displays described in Embodiment 1, each explosion-proof weighing display performs wireless communication through a ZigBee module, and can use the ZigBee module to send weighing information to users In the peripheral PLC system, or DCS system, or PC system, realize the networking application.

Embodiment 3

[0028] The working method of the above-mentioned explosion-proof weighing indicator is that each explosion-proof weighing indicator performs wireless communication through the ZigBee module, and the explosion-proof weighing indicator supports ZigBee wireless communication, and can communicate and transmit data with the explosion-proof equipment supporting ZigBee in the explosion-proof area. It can communicate with ZigBee-enabled devices in the security zone to transmit data.

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PUM

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Abstract

The invention relates to an explosion-proof weighing indicator, an explosion-proof weighing system and an operation method of the explosion-proof weighing indicator. The explosion-proof weighing indicator comprises a display panel, a keyboard panel, a PCBA (printed circuit board assembly) mainboard circuit board, a sealed housing, a battery, a battery sealing explosion-proof shell, a PCBA batteryenergy limiting protection circuit board, an indicator support and an intrinsic safe power connection harness, the sealed housing comprises a front cover and a rear housing body which are hermeticallymatched, and the rear end of the front cover and the rear housing body are hermetically matched through a sealing ring; an explosion-proof joint and a mainboard harness explosion-proof joint are arranged on the rear housing body, the battery is fixedly arranged in the battery sealing explosion-proof shell via the PCBA battery energy limiting protection circuit board, an energy limiting circuit module is arranged on the PCBA mainboard circuit board, the battery powers the PCBA mainboard circuit board via an intrinsic safe power output harness, the intrinsic safe power connection harness and the energy limiting circuit module; a ZigBee module is arranged on the PCBA mainboard circuit board and is used for wireless communication.

Description

technical field [0001] The invention relates to the technical field of weighing equipment, in particular to an explosion-proof weighing display instrument and a weighing system using the display instrument. Background technique [0002] Weighing equipment is widely used in the fields of medicine, food, chemical industry, etc. In the process of industrial production, combustible substances are evenly mixed with air or oxygen. After the concentration reaches the explosion limit, there is an ignition source, and the minimum ignition energy or high temperature is present, reaching its ignition. The ignition temperature means that there is a possibility of explosion or deflagration; the danger of explosion or deflagration is self-evident and seriously affects personal safety. As an extremely commonly used tool in the industrial field, its safety performance is also extremely important. The existing weighing display equipment cannot meet the requirements for use in the P1 area (re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G17/00G01G21/28G01G23/00G01G23/18G08C17/02
CPCG08C17/02G01G17/00G01G21/28G01G23/007G01G23/18
Inventor 陈文龙
Owner CHANGZHOU WEIBO WEIGH EQUIP SYST