CN201284659Y - Novel tunnel foam hydrant case - Google Patents

Abstract

The utility model relates to a novel tunnel foam hydrant box, comprising a foam liquid box, a box body, a reel, a pipeline system, a fixing seat and an air-breathing foam gun. The pipeline system consists of a one-way valve, a regulating valve, a filter, a proportioner, a pressure gauge, a hard pipe and a hose; branches are divided according to foam liquid, fire water and mixed liquid which converge at the proportioner; the hard pipe of the foam liquid branch is inserted into the foam liquid box; the fire water branch is connected with an external water pipe; the mixed liquid branch is connected with the air-breathing foam gun which is provided with a flow guide body, a nozzle and an air inlet; and the inlet end of the air-breathing foam gun is connected with the hose. When the fire water passes through the proportioner, the foam liquid is sucked in to form foam mixed liquid with a certain proportion and the mixed liquid flows to the air-breathing foam gun via the hose, the contact conditions of the mixed liquid with air is improved under the action of the flow guide body, the nozzle and the air inlet, so that the novel tunnel foam hydrant box has the functions of regulating turbulent flow, increasing foam multiple and increasing the foam drainage time, and is suitable for common foam liquid to use.

Description

The novel tunnel foam fire hydrant box

Affiliated technical field

The utility model relates to a kind of novel tunnel foam fire hydrant box.

Background technology

The mechanism of foam fire-fighting is that water and fire foam are mixed by a certain percentage, makes mixed liquor produce foam by foam device, in the burning object surfaces, makes burning object and air isolated, to reach the purpose of fire extinguishing foam coverage; So the coefficient of foaming of mixed liquor and the important performance indexes that drainage time is foam fire-fighting equipment.Present tunnel foam fire hydrant box, no special foam device, mixed liquor with water and fire foam during use directly sprays from the foam gun of no air suction inlet, contact the back with air at liquid outlet and form foam, because contacting of mixed liquor and air is abundant inadequately, cause coefficient of foaming low, drainage time is short, thereby has influenced the extinguishing property of tunnel foam fire hydrant box.In order to remedy this defective, common solution is quality and the requirement that improves foam solution, but does not only inconvenience but also uneconomical like this.

Summary of the invention

In order to improve the extinguishing property of tunnel foam fire hydrant box, how allowing mixed liquor fully contact with air is key issue, and the utility model provides a kind of novel tunnel foam fire hydrant box with foam device.

The utility model is achieved in that it is made up of foam solution case, casing, reel, pipe-line system, holder, air absorbing type foam gun.Casing and foam solution case all are rectangle, sealing around the foam solution case, and filling opening and liquid outlet are established in the top, are fixed by bolts in the casing; Pipe-line system is made up of one way valve, control valve, strainer, proportioner, pressure meter, hard tube and flexible pipe.Pipe-line system is installed in the casing, and pipe-line system is pressed foam solution, fire water, mixed liquor division branch road, converges in the proportioner place, and foam solution branch road hard tube inserts in the liquid outlet of foam solution case.The fire water branch road is connected with outer water tube, and mixed liquor branch road flexible pipe connects the air absorbing type foam gun.Reel is totally cylindrical, and circular baffle plate is established in the cylindrical shell both sides, for the usefulness of twining flexible pipe; Reel system is installed in the casing by screw bolt and nut.The air absorbing type foam gun is that cylinder is stepped, and the arrival end ball valve is connected with flexible pipe, is provided with baffle, nozzle and air inlet port.Take off the air absorbing type foam gun during use, open the control valve of foam solution branch road and fire water branch road, the air absorbing type foam gun is aimed at ignition point, open the ball valve on the air absorbing type foam gun, fire water flows to muzzle through the fire water branch road, when fire water passing ratio blender (according to the venturi principle manufacturing), under the effect of negative pressure, foam solution is sucked proportioner, form a certain proportion of foam mixing liquid; Mixed liquor flows to the air absorbing type foam gun through flexible pipe, fully forms turbulent flow under the effect of baffle; When mixed liquor is flowed through nozzle, because the effect of jet produces negative pressure to tube wall, air is sucked from air inlet port, in the gun barrel of foam gun, stir and foam, become gas-liquid phase mixed liquor with mixed liquor, when gas-liquid phase mixed liquor flies away from the foam gun liquid outlet, also can produce the effect of second time of foaming, than traditional tunnel foam fire hydrant box, its coefficient of foaming and drainage time all are significantly improved, simultaneously, the scope of application to foam solution also will get a new look.

The beneficial effects of the utility model are, by improving the contact conditions of mixed liquor and air, the coefficient of foaming of tunnel foam fire hydrant box are increased, and drainage time prolongs, and extinguishing property obviously improves, and is suitable for the use of regular-type foam liquid.

Description of drawings

Below in conjunction with drawings and Examples to the utility model further instruction.

Fig. 1 is locations of structures figure of the present utility model

Fig. 2 is a systematic schematic diagram

Fig. 3 is the baffle structure chart

Fig. 4 is an air absorbing type foam gun outline drawing

Among Fig. 1, Fig. 2, Fig. 3, Fig. 4: 1, foam solution case, 2, casing, 3, reel, 4 pipe-line systems (4-1, ball valve, 4-2, strainer, 4-3, pressure meter, 4-4, proportioner, 4-5, flexible pipe, 4-6, ball valve, 4-7, one way valve, 4-8, hard tube); 5, holder, 6, the air absorbing type foam gun (6-1 rifle body, 6-2, nozzle, 6-3, baffle, 6-4, ball valve).

The specific embodiment

Casing [2] is rectangle, and makes with metal sheet, and chamber door is made with metal framework glazing or bulk metal; Foam solution case [1] is the rectangle non-pressure vessel, sealing all around, and filling opening and liquid outlet are established in the top, are fixed by bolts in the casing [2]; The mixed liquor branch road that fire water branch road that the foam solution branch road that pipe-line system [4] is made up of control valve [4-6], one way valve [4-7], hard tube [4-8], control valve [4-1], strainer [4-2], pressure meter [4-3], hard tube [4-8] are formed and proportioner [4-4], flexible pipe [4-5], hard tube [4-8] are formed is constituted, and converges in proportioner [4-4] and locates; Pipe-line system [4] is installed in the casing [2] by holder [5], and foam solution branch road hard tube [4-8] inserts in the liquid outlet of foam solution case [1].Fire water branch road hard tube [4-8] is connected with outer water tube, and mixed liquor branch road flexible pipe [4-5] connects air absorbing type foam gun [6].Reel [3] is totally cylindrical, and circular baffle plate is established in the cylindrical shell both sides, for the usefulness of twining flexible pipe [4-5]; Reel [3] is to be installed in the casing [2] by screw bolt and nut.Air absorbing type foam gun [6] is that cylinder is stepped, and arrival end ball valve [6-4] firmly is connected with flexible pipe [4-5], and the front end of ball valve [6-4] is threaded with nozzle [6-2], and the front end of nozzle [6-2] is threaded with rifle body [6-1]; The link of rifle body [6-1] is provided with air inlet port.Nozzle [6-2] end is conical, and inner chamber also is a bellmouth, when liquid is flowed through this necking section, can form jet and tube wall is produced negative pressure, and air is sucked from air inlet port; The other end is cylindrical, establishes external screw thread, inner chamber and baffle [6-3] interference fit.Baffle [6-3] is the multiple thread of big lead angle, and shape is as fried dough twist, and there is an overcurrent aperture centre, makes fluid form turbulent flow under the effect of direct current and eddy flow.All directly contact the component of foam solution and foam mixing liquid and use the resistant material manufacturing or make corrosion-resistance treatment (flexible pipe [4-5] adopts rubber tube).

Claims (2)

1, a kind of novel tunnel foam fire hydrant box is characterized in that it is made up of foam solution case [1], casing [2], reel [3], pipe-line system [4], holder [5], air absorbing type foam gun [6]; The mixed liquor branch road that fire water branch road that the foam solution branch road that described pipe-line system [4] is made up of control valve [4-6], one way valve [4-7], hard tube [4-8], control valve [4-1], strainer [4-2], pressure meter [4-3], hard tube [4-8] are formed and proportioner [4-4], flexible pipe [4-5], hard tube [4-8] are formed is constituted, and converges in proportioner [4-4] and locates.

2, novel tunnel foam fire hydrant box as claimed in claim 1, it is characterized in that air absorbing type foam gun [6] is stepped for cylinder, arrival end ball valve [6-4] firmly is connected with flexible pipe [4-5], the front end of ball valve [6-4] is threaded with nozzle [6-2], the front end of nozzle [6-2] is threaded with rifle body [6-1], the link of rifle body [6-1] is provided with air inlet port, and nozzle [6-2] end is conical, and inner chamber is a bellmouth; The other end is cylindrical, establishes external screw thread, inner chamber and baffle [6-3] interference fit, and baffle [6-3] is the multiple thread of big lead angle, and shape is as fried dough twist, and there is an overcurrent aperture centre.

Images