KR20160053494A - A Mixing system of water and foam fluid for fire truck - Google Patents

Abstract

The present invention relates to a system for mixing fire-fighting water for a fire truck and a foam liquid. A rotor (200) rotated by flows of fire-fighting water is installed in the interior of a main pipe (100) connected such that water in a fire-fighting water tank (110) is supplied to a fire-fighting water cannon (130) by a fire-fighting water pump (120), a foam liquid pump (300) for pumping foam liquid of a foam liquid tank (310) is shaft-coupled to a shaft (210) of the rotor (200), a continuously variable transmission (400) that may manually adjust transmission ratio is installed between the shaft (210) of the rotor (200) and a driving shaft of the foam liquid pump (300), and various fires can be effectively coped with by mixing a foam liquid with the fire-fighting water at a predetermined ratio and supplying the mixture to the main pipe (100) through a foam liquid supply pipe (500).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system for mixing fire-

The present invention relates to a fire extinguishing water and a foam stock solution mixing system. More particularly, the present invention relates to a fire extinguishing water supply system for a fire extinguishing water tank, comprising a main pipe connected to fire water by a fire pump, A pump is provided between the shaft of the rotor and the drive shaft of the foam stock solution pump, and a continuously variable transmission capable of manually adjusting the speed ratio is installed in the shaft of the rotor. And the foam raw liquid is supplied to the main pipe through the foam raw liquid feed pipe to effectively cope with various fires.

Generally, when a fire occurs, the fire is suppressed by using water (water). Depending on the development of the industry, it is more likely that the fire develops into a situation where it is difficult to suppress the oil, gas or combustion of various chemical substances Water alone is not enough to digest.

In the case of large-scale fire suppression or outdoor fire extinguishing such as flammable liquids which are not effective only by digestion by water or are likely to enlarge the fire, a foamed mixed fire-fighting water mixed with a fire- It is possible to effectively suppress the fire by blocking the contact between the combustible body and the air.

The foamed medicines are divided into low and high expansion ratios of foams. The low expansion ratios of the medicines are mixed at a ratio of 3 to 6% by volume based on the total volume of the mixed fire-fighting water. In Korea, Of the total amount of the medicament.

In this case, the mixture ratio of the water for fire fighting water and the weak substance must be precisely set to form the most effective foam-type mixed fire fighting water in suppressing the fire. In order to effectively and quickly suppress the fire in the field of fire, Or the use of the device is very important.

In this regard, a venturi type mixer is widely used as a prior art for maintaining the mixing ratio of the fire-fighting water and the medicament constant, as shown in FIGS. 1 and 2. FIG.

The mixer according to the prior art is arranged so that the extinguishing water fed from the fire pump 1 is returned to the side of the absorption port of the fire pump 1 through the bypass pipe 13 and a venturi type foam mixer The foam raw liquid in the foam raw liquid tank 5 passes through the foam liquid main valve 10 and the control valve 9 by the pressure difference of the extinguishing water generated by the diffuser 42 inside the venturi nozzle 41, And the digestion water are mixed.

In the drawings, reference numeral 2 denotes a check valve, reference numeral 3 denotes a tarpaulin, reference numeral 4 denotes a defoamer valve, reference numeral 6 denotes a fire extinguisher tank, reference numeral 7 denotes a fire extinguisher main valve, reference numeral 11 denotes a water feed valve, and reference numeral 12 denotes a foam solution piping.

In the prior art having such a structure, the mixing ratio of the foam raw liquid is mixed with the digested water only by the pressure difference generated in the groove mixer 8, and thus it is difficult to produce the desired mixing ratio. It is difficult to control the mixing ratio and the mixing ratio can not be known. In this case, the foam mixture liquid may flow back to the fire pump 1 and the water tank 6, resulting in an increase in corrosion of all devices, There are also situations in which tens of thousands are not allowed to use.

Korean Registered Utility Model No. 20-0378222 (Registered on Mar. 2, 2005) Design Name; 'Pharmaceutical Mixing Device' Korean Registered Patent No. 10-0653555 (registered on November 28, 2006) Title of invention; &Quot; Pharmaceutical mixing apparatus and method thereof "

It is an object of the present invention to provide an improved structure capable of effectively coping with various fires by making it possible to mix a foam raw liquid at a desired mixing ratio according to the amount of water to be sprayed in a fire truck. And a system for mixing the foamed water and the fire-extinguishing water of the fire truck.

Another object of the present invention is to provide a system for mixing fire-fighting water and a foam stock solution which can prevent corrosion of a pump and various valves by preventing backflow of a foam mixture to a fire pump and a fire water tank.

Another object of the present invention is to provide a system for mixing fire-fighting water and a foam stock solution, which can measure the mixing amount and mixing ratio of the foam stock solution in real time simultaneously with waterproofing.

In order to accomplish the above object, according to an embodiment of the present invention, a main pipe connected to water of a fire water tank to be supplied to a tarpaulins by a fire pump; A rotor installed inside the main pipe and rotated by the flow of the extinguishing water; A foam stock solution pump which is axially coupled to the rotor to pump the foam stock solution of the foam stock solution tank; A continuously variable transmission provided between the shaft of the rotor and the drive shaft of the foam stock solution pump and manually adjusting a speed change ratio; A foam stock solution supply pipe for supplying the foam stock solution supplied by the foam stock solution pump to the main pipe; The present invention provides a system for mixing fire-extinguishing water and a foam stock solution.

Preferably, the foam stock solution pump comprises a trochoid pump, and the main pipe and the foam stock solution supply pipe are respectively provided with a flow meter for checking the flow rate of the fire extinguishing water and the foam stock solution.

More preferably, a backflow prevention valve is provided between the fire pump and the waterproofing foam of the main pipe to prevent the foam mixture liquid from flowing back to the fire pump, and the foam raw liquid supply pipe is connected between the backflow prevention valve and the waterproofing foam .

According to the embodiment of the present invention, the foam raw liquid can be naturally interlocked and mixed according to the water content of the extinguishing water to maintain a constant ratio. By adjusting the control lever of the continuously variable transmission, 3% and 6% can be used, and it is possible to correct the error of fine mixing ratio caused by the structural factors of the system, and it is possible to correct the mixing amount and the ratio of the foam stock solution by waterproofing It is possible to measure in real time, and it is possible to prevent the foam mixture liquid from entering the fire prevention pump and the fire water tank before the backflow prevention valve. Therefore, it is possible to maintain the clean fire water and minimize the corrosion damage of the fire pump and the valve And the like.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a system for mixing a foamed water and a foamed water,
Fig. 2 is an enlarged view of the main part of Fig. 1,
FIG. 3 is a block diagram of a system for mixing digested water and a foam stock solution according to an embodiment of the present invention,
4 is an enlarged view of the main part of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 show a system for mixing fire extinguishing water and a foam stock solution according to an embodiment of the present invention. In the mixing system of this embodiment, water in the fire extinguishing water tank 110 is supplied to the fire extinguishing water A main pipe 100 connected to supply the waterproof film 130; A rotor (200) installed in the main pipe (100) and rotated by the flow of extinguishing water; A foam stock solution pump 300 which is axially coupled to the rotor 200 to pump the foam stock solution of the foam stock solution tank 310; A continuously variable transmission 400 installed between the shaft of the rotor 200 and the drive shaft of the foam stock solution pump 300 and manually adjusting a speed change ratio; And a foam stock solution supply pipe 500 for supplying the foam stock solution supplied by the foam stock solution pump 300 to the main pipe 100.

A backflow prevention valve 150 is provided between the fire pump 120 and the defoaming foam 130 of the main pipe 100 and a main valve 160 is provided between the fire pump 120 and the fire fighting water tank 110 And a defoamer valve 170 is installed between the check valve 150 and the defoamer 130.

One end of the foam stock solution supply pipe 500 is connected between the check valve 150 and the defoamer valve 170 and the other end is connected to the foam stock solution tank 310, A foam liquid pump 300 is installed so that the rotor 200 is rotated by the rotor 200 to be water-repellent by the extinguishing water so that the foam liquid pump 300 is driven, Respectively.

In this embodiment, the main pipe 100 and the foam stock solution supply pipe 500 are provided with flow meters 140 and 540 for checking the flow rates of the extinguishing water and the foam stock solution, respectively. The rotor 200 and the foam stock solution The continuously variable transmission 400 installed between the pumps 300 adjusts the speed ratio of the foam liquid pump 300 by adjusting the speed ratio by operating the control lever 440 so that the mixture ratio of the extinguishing water and the foam liquid can be arbitrarily adjusted .

Accordingly, the operator can check the flow rate of the extinguishing water and the foam stock solution in real time while watching the flow meters 140 and 540, and operate the control lever 440 to precisely control the mixing ratio of the extinguishing water and the foam stock solution.

The shaft 200 of the rotor 200 is extended to the outside of the main pipe 100 and the shaft 210 of the rotor 200 is extended to the outside of the main pipe 100, (400) and the material joint (220).

The rotational support and watertight structure of the rotor 200 is a technique that can be implemented by a person skilled in the art in the technical field of the present invention, so a detailed description thereof will be omitted.

In this embodiment, the foam stock solution pump 300 is formed of a hypotrochoid pump. In this case, an inner rotor having a quadrilateral star shape and an outer rotor having a pentagonal inwardly oriented phase are arranged in a cylindrical casing, When the inner rotor rotates at a different speed, for example, when the inner rotor rotates four times, the outer rotor rotates at a rate of three rotations while being eccentrically installed, thereby pumping the foam stock solution of the foam stock solution tank 310 to the main pipe 100 .

In this embodiment, the trochoid pump used as the foam stock solution pump 300 is usually used as a small oil refueling pump or the like. Such a trochoid pump is advantageous in that the flow rate can be precisely controlled as compared with other types of pumps. Likewise, it is suitable for the system for the quantitative mixing of digestion water and foam stock solution.

Reference numeral 410 denotes an input shaft of the continuously variable transmission, reference numeral 420 denotes an output shaft, and reference numeral 430 denotes material coupling for shaft coupling between the output shaft 420 and the foam stock solution pump 300.

Reference numeral 510 denotes a foam liquid main valve.

In the mixing system of this embodiment configured as described above, when the fire pump 120 is operated and water (water) of the fire extinguishing water pump 110 is discharged from the tarpauline 130 on the main pipe 100, The rotor 200 installed inside the rotor 200 is rotated by the flow of the extinguishing water to rotate the rotor shaft 210. The rotor 200 increases or decreases the rotation speed in proportion to the flow rate of the extinguishing water .

The rotor shaft 210 drives the foam stock solution pump 300. Since the feed amount of the foam stock stored in the foam stock solution tank 310 increases or decreases in proportion to the rotational speed of the rotor 200, The operator can view the flow meters 140 and 540 provided in the main pipe 100 and the foam raw solution supply pipe 500 to adjust the mixing amount and the ratio of the foam stock solution to be capable of being extinguished 3% and 6% depending on the kind of the foam raw liquid by adjusting the control lever 440 of the continuously variable transmission 400, which can be measured in real time simultaneously with the waterproofing of the foam, It is possible to correct an error of a minute mixing ratio caused by a structural factor of the system.

In addition, according to the above-described embodiment, since the foam mixture liquid is installed before the check valve 150 of the main pipe 100, it is possible to prevent the foam mixture liquid from entering the fire fighting pump 120 and the fire fighting water tank 110 Therefore, it is possible to maintain the clean water, and the corrosion damage of the fire pump 120 and the valve 160 can be minimized.

100: Main pipe
110: Water tank
120: Fire pump
130: Tarpaulin
140: Flowmeter
150: Backflow prevention valve
160: Main valve
170: Tarpaulin valve
200: rotor
210: rotor shaft
220: Material Joint
300: Foam pump
310: foam stock tank
400: continuously variable transmission
410: input shaft
420: Output shaft
430: Material Joint
440: Control lever
500: Pouring solution supply pipe
510: Foam liquid main valve
540: Flowmeter

Claims (4)

A main pipe 100 connected to supply the water in the fire extinguisher tank 110 to the tarpaulins 130 by the fire pump 120;
A rotor (200) installed in the main pipe (100) and rotated by the flow of extinguishing water;
A foam stock solution pump 300 which is axially coupled to the rotor 200 to pump the foam stock solution of the foam stock solution tank 310;
A continuously variable transmission 400 installed between the shaft of the rotor 200 and the drive shaft of the foam stock solution pump 300 and manually adjusting a speed change ratio;
And a foam stock solution supply pipe (500) for supplying the foam stock solution supplied by the foam stock solution pump (300) to the main pipe (100).
The method according to claim 1,
Wherein the foam stock solution pump (300) is a trochoid pump.
The method according to claim 1 or 2,
Wherein the main pipe (100) and the foam stock solution supply pipe (500) are respectively provided with flow meters (140, 540) for checking the flow rates of the extinguishing water and the foam stock solution.
The method according to claim 1,
A backflow prevention valve 150 is provided between the fire pump 120 and the defoaming foam 130 of the main pipe 100 and the foam stock solution supply pipe 500 is connected to the backflow prevention valve 150 and the defoaming foam 130, Wherein the water is mixed with the foamed water and the foamed stock solution.

Images