Automatic foam proportioner structural foam fire truck mounted display

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Mostly manually foam proportioner foam fire engine manufacturers in the use of foam fire truck, then what kind of foam fire engine automatic foam proportion of it? General airport fire fighting, oil depot fire, active fire protection can be used in a large proportion of foam automatic foam fire truck.
Foam proportioner foam fire extinguishing system is a "nerve center" and its performance is directly related to the fire extinguishing foam system success or failure. Pressure foam proportioner air foam proportioner ring pump foam proportioner, foam proportioning pipelines and other types of mixer.
Foam fire extinguishing system is safe, reliable, economical, practical and high extinguishing efficiency, especially for fighting Class B fires more prominent advantages, is the basis of domestic and foreign oil fire mode.

Automatic foam ratio is divided into:
1, the pressure foam proportioning editor
Pressure foam proportioner application ZP32 foam / water spraying automatic fire extinguishing systems, low expansion foam fire extinguishing systems, AFFF sprinkler system, inlet, outlet pipe, mixing chamber, diffusion tubes and other components. Casting chamber mixing ratio indicate directions of flow. Bolts should be connected to the pump outlet end of the installation, the arrow end should be responsible for turning foam into the water, the liquid foam concentrate tank and pipe.

Working guidelines:
Ratio is mainly used Venturi principle, by the pressure of the water mixer ratio of its internal negative pressure difference between the container and the liquid foam through the mixer is connected to the mixer in proportion than the connecting tube and the foam tube foam control orifice stable mixing ratio of the inner tank foam liquid stream to form a liquid foam - water mixture.
2, the negative pressure foam proportioning line editor
Pipeline vacuum foam proportioner is used in mixing ratio of foam fire box, moving vehicles and other equipment on the foam.

Working guidelines:
After the water from the inlet into the mixer ratio of pressure through a nozzle to the high-speed jet nozzle and the formation of most of the water between the diffusion tube negative pressure zone of the diffuser, the foam liquid is sucked through the vacuum suction port area, with water at the same time diffusion into the tube, the pressure flowing from the outlet; there is by adjusting the pressure of the water mixture in a small part of diffusion from the outlet and outlet pipe from the mixing valve. Swirl control valve handle (mixer side) adjust the mixing ratio of the mixture.

Structural features:
1 mixer for the vacuum line mixer, when the water pressure reaches pressure, bubbling liquid into the mixer will supply pipes.
2 connected to the outlet from the mixer imported from the tooth and teeth interface connected to the supply line of the mixture KY65 KY65 line output tube.
3 mixer comes with a suction control foam liquid flow valve, regulating valve on the sign marking a liquid absorbing foam ratio.
3, ring pump foam proportioning Editor
Ring vacuum pump application of negative pressure ratio of foam fire extinguishing systems. By the regulator handle, signs, control valves, mixing chamber, diffusion tubes and other parts ring pump ratio. Ring pump proportional mixing chamber cast arrows indicate the direction of flow. To recognize traffic signs on the different combinations were 16L / sec, 24L / sec, 32L / sec, 48L / sec, 64L / s of. Adjustment handle according to signs adjusted accordingly foam mixture flow. Bolts should be connected to the pump outlet end of the installation, the arrow should end through the inlet of the pump, suction and liquid foam concentrate tank is turned on.

Structural features:
1, the mixer is adjustable handle, signs, control valves, mixing chamber, including the diffuser ring pump mixer.
2, marked with a different value on the mixer, the value of the mixture and spray foam generating means, respectively, the amplitude of the signs.
3, with 6% foam concentrate mixer.
4, in the vicinity of the mixer should be connected to the pump inlet and outlet tube pump installation. When requested mixer pump inlet pressure is less than 0.03MPa, otherwise it will affect the performance of the absorption liquid foam mixer.
5, 0.6~1.4MPa inlet pressure range of mixers, liquid draw a document in an amount of foam is basically unchanged. Foam generation and injection equipment at different pressures and when it changes the amount of the mixture, the mixing ratio will change. Therefore, in order to adjust and control the pressure and spray foam generating device, therefore, pressure is too low or too high, so that the amount of liquid in the foam, to ensure that the amount of 3-6% of the proportion of the mixture.

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