CN2239274Y

CN2239274Y - Hydrant able to form water curtain

Info

Publication number: CN2239274Y
Application number: CN 95225713
Authority: CN
Inventors: 黄书彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-31
Filing date: 1995-10-31
Publication date: 1996-11-06
Anticipated expiration: 2005-10-31

Abstract

The utility model discloses a fire fighting water gun which is able to form a water curtain. A water outlet window is arranged on a gun nozzle. The end part of a gun body is provided with the piston cavity of a built-in ring type piston, and one side is provided with a built-in booster valve and the convex platform of a decompression valve. A booster water inlet is arranged on a gun body wall at the water inlet of the booster valve, and a booster hole is arranged between a water outlet and the piston cavity. A decompression hole is arranged between the water inlet and the piston cavity of the decompression valve, and a water outlet is provided with a decompression water outlet toward outside. When the booster valve is opened, pressure water in the gun body enters the piston cavity to drive the piston to close the port of the water curtain; when the decompression valve is opened, the pressure water in the piston cavity is discharged from the decompression water outlet, which discharges the back pressure of the piston, and the port of the water curtain is opened. The utility model has the advantage of sensitive, quick, and reliable water curtain on-off action.

Description

A kind of fire-fighting lance that can form water curtain

The utility model relates to a kind of fire-fighting lance that can form water curtain.

The fire-fighting lance that can form water curtain that uses mainly comprises rifle mouth, rifle body now, and there is the water curtain mouth rifle mouth and rifle body joint portion.Its water outlet window is opened on rifle body inwall, and the water curtain switch on the rifle body is the screw machine formula, and the helical pressure that relies on rotation to form is controlled the unlatching of water curtain mouth or closed, and reaches the purpose that forms water curtain or close water curtain.The subject matter of its existence is processing difficulties, uses dumbly, and the opening time is long, is difficult to close.

Goal of the invention of the present utility model will provide a kind of fire-fighting lance that can form water curtain exactly, the switch motion sensitivity of its water curtain, rapid, reliable.

For reaching above-mentioned purpose, the technical solution of the utility model is for to offer the water outlet window with water curtain mouth corresponding position on rifle mouth inwall; Between the inside and outside wall of rifle body and rifle mouth link port, offer plunger shaft, the circle formula piston that outer bead is inlaid with sealing ring is installed therebetween; Its end one side is provided with the outstanding projecting platform that fuses in the end that forms with plunger shaft, has two valve openings on it side by side, and pressure charging valve and relief valve are installed respectively; With pressure charging valve water inlet corresponding position rifle body wall on offer the supercharging blasthole, between pressure charging valve delivery port and plunger shaft, offer pressurized hole; Between relief valve water inlet and plunger shaft, offer relief hole, the place externally offers the pressure release apopore at the relief valve delivery port, when pressure charging valve is opened, there is the water of certain pressure to enter plunger shaft in the rifle body by supercharging blasthole, pressure charging valve, pressurized hole, to enclose the extrapolation of formula piston, sealing ring and the pressing of rifle mouth, water curtain mouth closure is closed water curtain; When relief valve is opened, press water in the plunger shaft leaks by relief hole, relief valve, pressure release apopore, to enclose formula piston back pressure releases, simultaneously, press water in the rifle body passes through the water outlet window outwash corresponding with the water curtain mouth on the rifle mouth, will enclose in the formula piston to push away, and sealing ring and rifle are had a loose tongue out, the water curtain mouth is opened, and press water is gone out the formation water curtain from the water curtain mouth; Thereby, can realize water curtain switch motion sensitivity, rapid, reliable purpose.

The pressure charging valve of above-mentioned hydraulic giant and relief valve are made of valve body, valve rod and back-moving spring, press lower valve rod, and valve is open-minded.

Owing to such scheme is to utilize differential water pressures to help to open or close the water curtain mouth, thus more laborsaving, easy than former mechanical operation, and actuation time is short, flexible, effective, reliable; From structure, also be convenient to processing, reduced processing cost.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a present embodiment projecting platform side view.

Fig. 2 is the vertical face cutaway view along A-A ' line embodiment illustrated in fig. 1.

Fig. 3 is the vertical face cutaway view along the A-B line embodiment illustrated in fig. 1.

As shown in Figure 1, pressure charging valve 6, relief valve 7 place in the projecting platform 8 of rifle body 2 side by side.

As Fig. 2, shown in Figure 3, rifle mouth 1 and rifle body 2 are threaded.Rifle body 2 ports have the end to give prominence to 5, and end one side has projecting platform 8, have plunger shaft 9 in the end outstanding 5, built-in circle formula piston 4, and circle formula piston 4 outer beads are inlaid with sealing ring 10, and the joint portion of sealing ring 10 and rifle mouth 1 forms water curtain mouth 3; On rifle mouth 1 inwall, offer water outlet window 11 with water curtain mouth 3 corresponding positions.

As shown in Figure 2, pressure charging valve 6 places in the valve opening of projecting platform 8, and its water inlet corresponding position, bottom rifle body wall has supercharging blasthole 12, has pressurized hole 13 between its middle part delivery port and the plunger shaft 9.

As shown in Figure 3, relief valve 7 also places in another valve opening of projecting platform 8, has relief hole 14 between its bottom water inlet and the plunger shaft 9, and its middle part delivery port externally has pressure release apopore 15.

As Fig. 2, shown in Figure 3, pressure charging valve 6, relief valve 7 are made of valve body 16, valve rod 17, back-moving spring 18.When pressing lower valve rod 17, valve is open-minded.

Present embodiment is to utilize concept of differential water pressures to open or close water curtain.When pressing the valve rod 17 of pressure charging valve 6, pressure charging valve 6 is open-minded, and the press water in the rifle body 2 enters plunger shaft 9 by supercharging blasthole 12, pressure charging valve 6, pressurized hole 13, will enclose 4 extrapolations of formula piston, sealing ring 10 and 1 pressing of rifle mouth, and water curtain mouth 3 closures, water curtain is closed; When pressing the valve rod 17 of relief valve 7, relief valve 7 is open-minded, press water in the plunger shaft 9 leak by relief hole 14, relief valve 7, pressure release apopore 15, thereby the back pressure that will enclose formula piston 4 releases, simultaneously, press waters in the rifle body 2 are by water outlet window 11 outwash corresponding with water curtain mouth 3 on the rifle mouth 1, will encloses in the formula piston 4 to push away, and sealing ring 10 and rifle mouth 1 unclamp, water curtain mouth 3 is opened, and press water is gone out from water curtain mouth 3 and formed the umbrella shape water curtain.Thereby, realized purpose sensitive, rapid, reliable switch water curtain.

Claims

1, a kind of fire-fighting lance that can form water curtain comprises rifle mouth (1) and rifle body (2), and rifle mouth (1) has water curtain mouth (3) with the joint portion of rifle body (2), it is characterized in that:

(1) offers water outlet window (11) with water curtain mouth (3) corresponding position on described rifle mouth (1) inwall;

(2) have plunger shaft (9) between the inside and outside wall of described rifle body (2) and rifle mouth (1) link port, the circle formula piston (4) that outer bead is inlaid with sealing ring (10) is installed therebetween; Its end one side has the end that forms with plunger shaft (9) to give prominence to the projecting platform (8) that (5) fuse, and has two valve openings on it side by side, and pressure charging valve (6) and relief valve (7) are installed respectively; With pressure charging valve (6) water inlet corresponding position rifle body wall on have supercharging blasthole (12), between pressure charging valve (6) delivery port and plunger shaft (9), have pressurized hole (13); Have relief hole (14) between relief valve (7) water inlet and plunger shaft (9), the delivery port place externally has pressure release apopore (15) at relief valve (7).

2, according to the described fire-fighting lance of claim 1, it is characterized in that: described pressure charging valve (6) and relief valve (7) are to be made of valve body (16), valve rod (17) and back-moving spring (18).