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Measurement injecting type proportion mixing device

A technology of proportional mixing device and proportional mixer, which is applied in mixers, dissolution, fire rescue, etc., can solve the problems of poor mixing ratio accuracy of fire fighting water, large loss of foam stock solution, and increased fire extinguishing costs, so as to achieve intuitive observation and equipment damage Low cost and easy maintenance

Inactive Publication Date: 2010-06-09
SHANGHAI HAIYUE SAFETY ENG EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The mixing ratio of foam stock solution and fire water is poor;
[0004] (2) Only one mixing ratio is applicable, and the throttle orifice needs to be replaced when adjusting the mixing ratio;
[0005] (3) Due to the poor accuracy of the mixing ratio, the loss of foam stock solution is large, which increases the cost of fire extinguishing;
[0006] (4) Poor fire suppression reliability

Method used

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  • Measurement injecting type proportion mixing device
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  • Measurement injecting type proportion mixing device

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Embodiment Construction

[0023] see figure 1 , figure 2 , The metering injection proportional mixing device of the present invention includes a proportional mixer 1, a foam solution supply mechanism 2, a fire water pipeline 3 and a control cabinet 4. An engineering single-board computer PC and a frequency converter are installed in the control cabinet 4 .

[0024] The proportioning mixer 1 in the present invention is a pressure type proportioning mixer, and the proportioning mixer is provided with a spray pipe and a diffuser pipe, which can make the fire-fighting water and the foam stock solution entering the proportioning mixer mix rapidly and evenly.

[0025] The foam stock solution providing mechanism 2 among the present invention comprises a foam stock solution storage tank 21, a foam stock solution delivery pump 22 (two sets, one main and one standby) and corresponding connecting pipes, and the foam stock solution storage tank 21 passes through the connecting pipeline and the foam stock solutio...

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Abstract

The invention discloses a measurement injecting type proportion mixing device comprising a proportioner, a foam concentrate supply mechanism and a fire fighting water pipeline, wherein the foam concentrate supply mechanism and the fire fighting water pipeline are communicated with the proportioner; the foam concentrate supply mechanism comprises a foam concentrate storage tank, a foam concentrate delivery pump, a foam concentrate delivery pipeline, an engineering single board computer PC and a transducer, wherein the fire fighting water pipeline and the foam concentrate delivery pipeline are respectively provided with a fire fighting water flow sensor and a foam concentrate flow sensor; two flow sensors are respectively connected with the electrical signal of the engineering single board computer PC; the engineering single board computer PC is connected with the electrical signal of the transducer; the transducer is connected with the electrical signal of the foam concentrate delivery pump so as to control the revolving speed of the foam concentrate delivery pump. The measurement injecting type proportion mixing device of the invention takes automatic instrument measurement as a main control unit, uses a microcomputer transducer for controlling according to the flow change of a water supply system, can keep fire fighting water and foam liquid in a stable proportion, has high precision degree of mixing ratio and is convenient to adjust the mixing ratio.

Description

technical field [0001] The invention relates to a fire-fighting device, in particular to a metering injection type proportional mixing device. Background technique [0002] The foam proportional mixing device is an important device for extinguishing Class A, B, and C liquid fires in firefighting. Due to the difference in the foam stock solution, there are two mixing ratios between it and fire-fighting water: 3% and 6%. Most of the foam proportional mixing devices currently available on the market are diaphragm tank type or balance valve type. These two devices are all mechanically adjusted. Uniformity, there are the following problems: [0003] (1) The mixing ratio of foam stock solution and fire water is poor; [0004] (2) Only one mixing ratio is applicable, and the throttle orifice needs to be replaced when adjusting the mixing ratio; [0005] (3) Due to the poor accuracy of the mixing ratio, the loss of foam stock solution is large, which increases the cost of fire ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C5/02B01F15/04
Inventor 沈家明
Owner SHANGHAI HAIYUE SAFETY ENG EQUIP CO LTD
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