CN2298289Y

CN2298289Y - Underground hydrant installed quick air valve

Info

Publication number: CN2298289Y
Application number: CN 97238109
Authority: CN
Inventors: 荣仁瑜
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-29
Filing date: 1997-04-29
Publication date: 1998-11-25
Anticipated expiration: 2007-04-29

Abstract

The utility model relates to an underground hydrant installed quick air valve, belonging to the technical field of fire protection in streets. The utility model with a small size can exhaust and inhale a large quantity of air in pipes and the fire hydrant quickly in order to prevent the generation of obstruction and water hammer which can rupture a water bag. The utility model solves the problem of improving the fire-protection level in downtown of a city. The utility model is characterized in that the quick air valve is composed of a ball, a float valve body, a float valve guide sleeve and an air valve seat; the underground hydrant is composed of a trapezoid screw rod, a valve seat, a sealing rubber cup, a box body, a box cover, a leading-out end, etc.; a box body of the quick air valve is fixed on a box body of the underground hydrant. The utility model has the advantages of small size, light weight, convenient conveying, construction, installation, use and management, anti-freezing, anti-corrosion, reliable durability and strong safety.

Description

The underground hydrant of quick-acting air valve is housed

The utility model belongs to fire prevention field in the street.Particularly a kind of underground hydrant with quick-acting air valve.

Existing underground hydrant volume is big, weight big, the construction works amount is very big, and decades are constant, and the underground hydrant heaviness is dumb, and the time is long more reflects that more it is dangerous, unreliable.Therefore, fire fighting system is just marching toward the new period of update, and the fire-fighting work personnel urgently wish to develop the current international level underground hydrant that has.

At the problems referred to above, the purpose of this utility model provides and a kind ofly can prevent to block with water hammer making the water desmorrhexis to the fast a large amount of exhaust of air in the pipe and in the fire plug, air-breathing.Be a kind of volume little, in light weight, flexibly durable, safe, reliable, antifreeze, can be rapidly the underground hydrant of a large amount of exhausts.

The utility model is realized with following mode: it is a kind of underground hydrant that quick-acting air valve is housed, and quick-acting air valve is an independent sector, and its blast gate casing 32 is fixed on the underground hydrant casing 14 by hex bolts 23, plain cushion 22; Ball 31, float valve body 33, float valve guide pin bushing 34, rubber pad 36 are arranged in the blast gate casing 32, O RunddichtringO 37 is arranged on the air valve seat 35, fix by hex nut 39 with stud 40, exhaust guard shield 41, cover 38, blast gate sealing copper ring 24 is to inlay on blast gate casing 32, install in the blast gate copper nut 30, O RunddichtringO 29 and blast gate screw rod 26, hex nut 28 are fixed on handwheel 27 on the blast gate screw rod 26, and blast gate copper nut 30 and sealing plain cushion 25 are installed on the blast gate casing 32.The valve body of underground hydrant part partly is to make with rubber to be soft sealing shape, sealing cup 18 is by valve seat 17, gland 20 usefulness double threaded screws 19 and hex nut 21 are fixing, be positioned at trapezoidal screw 2 belows with cottor pin 16 again, trapezoidal screw 2 tops have four jiaos of swivel nuts, 6 usefulness taper pins 5 to be fixed on the trapezoidal screw 2, screw in the sealing nut 4, O-ring seals 7 is arranged and be installed in the trapezoidal nut 1 and be fixed on the case lid 3 with awl end holding screw 15, there is O-ring seals 13 to be fixed on the casing 14 in the case lid 3 by hex bolts 42, exit 11 end faces are equipped with O-ring seals 12 tops tube tooth interface 10, stifle 8 and chain 9, the other end is connected on the case lid 3, and exit 11 is fixed on the casing 14 by hex bolts 42; O-ring seals is all used at the sealing position, replaces bedding and padding and asbestos rubber pad.

The utility model is light and handy, safe, reliable, antifreeze, durable, good airproof performance, do not need maintenance and keep in repair, check also more convenient, it all uses the O RunddichtringO to replace sealing bedding and padding and asbestos rubber pad, uses the O RunddichtringO, reliably, safety, sealing are strong, durable, valve body partly is to make with rubber to be soft sealing shape, and permanent deformation is little, elastic recoil is good, valve seat location is tapered in addition, and excellent sealing is arranged, and the sand foreign matter can not advanced in the sealing position.This underground hydrant is because attached quick-acting air valve, and case lid, casing processing technology are good in design, and casing and tube tooth interface are greatly improved the casing processability with exit split design and processing.Trapezoidal screw and trapezoidal nut also improve design, make trapezoidal nut and trapezoidal screw processes more convenient.Quick-acting air valve and underground hydrant are than independent design and installation, and compact conformation is reasonable, the material saving financial resources, and installation administration is convenient.

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 is the utility model structural representation, is front view;

Fig. 2 is a vertical view.

With reference to Fig. 1, Fig. 2, φ 80mm ball 31, float valve body 33, float valve guide pin bushing 34, rubber pad 36 are arranged in the blast gate casing 32, there are O-ring seals 37 usefulness studs 40, exhaust guard shield 41, cover 38 to fix on the air valve seat 35 by hex nut 39.Blast gate sealed copper 24 is to inlay on blast gate casing 32, O-ring seals 29 and blast gate screw rod 26 are installed in the blast gate copper nut 30, hex nut 28 is fixed on handwheel 27 on the blast gate screw rod 26, blast gate copper nut 30 and sealing plain cushion 25 are installed on the blast gate casing 32, and blast gate casing 32 is fixed on the casing 14 by hex bolts 23, plain cushion 22.It is fixing that trapezoidal nut 1 usefulness awl end holding screws 15 are installed in the case lid 3, and there is the trapezoidal screw 2 of installation the centre, and O-ring seals 13 is arranged in the case lid 3, top installation sealing nut 4, in O RunddichtringO 7 is arranged; It is fixing that trapezoidal screw 2 tops are equipped with four jiaos of swivel nuts, 6 usefulness taper pins 5, valve seat 17 usefulness cottor pins 16 location are installed in trapezoidal screw 2 belows, sealing cup 18 is arranged below, gland 20 is fixing by double threaded screw 19 and hex nut 21, case lid 3 is fixed on the casing 14 by hex bolts 42, and exit 11 end faces are equipped with O-ring seals 12, and there is tube tooth interface 10 top, the stifle 8 and chain 9 other ends are connected on the case lid 3, and exit 11 is fixed on the casing 14 by hex bolts 42.The attached blast gate of the utility model underground hydrant, its trapezoidal nut 1, sealing nut 4, blast gate copper nut 30, aeroseal copper ring 24 are all made with copper alloy; Trapezoidal screw 2, blast gate screw rod 26, cottor pin 16, hex nut 21, stud 40, exhaust guard shield 41 are all made with stainless steel; Float valve body 33, φ 80mm ball 31, float valve guide pin bushing 34 are all made with synthetic resin, vulcanie and plastics, anticorrosion durable nothing are arranged because of wearing out bad phenomenon such as producing obstruction; All the sealing positions adopt O-ring seals to replace sealing bedding and padding, asbestos rubber pads, and are reliable, durable, sealing is strong, high safety; Valve body makes with rubber that to be soft sealing shape permanent deformation little, and elastic recoil is good, and valve seat location is tapered in addition an excellent sealing, and the sand foreign matter can not advanced in the sealing position.Attached quick-acting air valve partly is an individual components, and exit 11 is and casing 14 partial installations, good processability, and it is corrosion-resistant that casing 14 and case lid 3 all scribble epoxy resin; Valve seat 17, gland 20 are fixed sealing cup 18, are to be soft sealing shape, and excellent sealing is arranged, and elastic recoil is good; Valve seat location is tapered in addition, and excellent sealing is arranged, and the sealing position does not have the sand foreign matter, and O-ring seals is all used in other sealings place, and is safe, reliable, durable, replaces sealing bedding and padding and asbestos rubber pad; Transmission position trapezoidal nut 1, trapezoidal screw 2 are all made with copper alloy and stainless steel, and rotational positioning place sealing nut 4 is to make with copper alloy, and is anticorrosion durable, and non-corrosive can be not stuck, and be therefore safe and reliable, and the time is long more can embody its superiority more.The course of work is as follows during use: quick-acting air valve is a normally open at ordinary times, the pipe in or fire plug in air enter blast gate casing 32 under pressure, φ 80mm ball 31 earlier air and moisture from, air is upwards along gap between φ 80mm ball 31 and the float guide pin bushing 34 under pressure, enter float valve body 33 middle apertures, by air valve seat 35 exhaust airs, because float valve body 33 can float, so quick, a large amount of exhaust airs of energy, air has arranged the back because the running water pipe hydraulic action, make φ 80mm ball 31 upwards, make float valve body 33 simultaneously upwards; Under the pressure effect of water, not only float valve body 33 apertures are closed by φ 80mm ball 31, float on simultaneously valve body 33 tightly on the air valve seat 35, the bore closure of rubber pad 36, O-ring seals 37, water can not be discharged from; Whole process is that very the short time carries out.The course of work was as follows when the utility model used: use the special-purpose four jiaos of box spanners of fire plug in stifle 8 counter rotations, stifle 8 is taken off, water band clockwise direction is turned round, use the special-purpose four jiaos of box spanners of fire plug four jiaos of swivel nut 6 counter rotations again, drive trapezoidal screw 2 and under trapezoidal nut 1 effect, become rectilinear motion by circular motion, valve seat 17 connection opening pins 16, sealing cup 18, gland 20 are upwards, leave casing 14 cones, tap water is by casing 14, exit 11, tube tooth interface 10 water outlets.When closing, rotate at four jiaos of swivel nut 6 clockwise directions with the special-purpose four jiaos of box spanners of fire plug, drive trapezoidal screw 2, under trapezoidal nut 1 effect, become rectilinear motion by circular motion, downward cottor pin 16, sealing cup 18, gland 20 that valve seat 17 connects, sealing cup 18 is close to casing 14 tapers, and tap water can not arrive in the casing 14.

Claims

1. underground hydrant that quick-acting air valve is housed, it is characterized in that: quick-acting air valve is an independent sector, its blast gate casing [32] is fixed on the underground hydrant casing [14] by hex bolts [23], plain cushion [22];

Ball [31] is arranged in the blast gate casing [32], float valve body [33], float valve guide pin bushing [34], rubber pad [36], O RunddichtringO [37] is arranged on the air valve seat [35], with stud [40], exhaust guard shield [41], cover [38] is fixing by hex nut [39], blast gate sealing copper ring [24] is to inlay on blast gate casing [32], install in the blast gate copper nut [30], O RunddichtringO [29] and blast gate screw rod [26], hex nut [28] is fixed on handwheel [27] on the blast gate screw rod [26], and blast gate copper nut [30] and sealing plain cushion [25] are installed on the blast gate casing [32];

The valve body of underground hydrant part partly is to make with rubber to be soft sealing shape, sealing cup [18] is by valve seat [17], gland [20] is fixing with double threaded screw [19] and hex nut [21], use cottor pin [16] to be positioned at trapezoidal screw [2] below again, trapezoidal screw [2] top has four jiaos of swivel nuts [6] to be fixed on the trapezoidal screw [2] with taper pin [5], screw in the sealing nut [4], O-ring seals [7] is arranged and be installed in the trapezoidal nut [1] and be fixed on the case lid [3] with awl end holding screw [15], there is O-ring seals [13] to be fixed on the casing [14] in the case lid [3] by hex bolts [42], exit [11] end face is equipped with O-ring seals [12] top tube tooth interface [10], stifle [8] and chain [9], the other end is connected on the case lid [3], and exit [11] is fixed on the casing [14] by hex bolts [42];

O-ring seals is all used at the sealing position, replaces bedding and padding and asbestos rubber pad.