CN2162263Y

CN2162263Y - Automatic fire cock

Info

Publication number: CN2162263Y
Application number: CN 93217290
Authority: CN
Inventors: 薛建仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-26
Filing date: 1993-06-26
Publication date: 1994-04-20
Anticipated expiration: 2003-06-26

Abstract

The utility model relates to an automatic fire cock without a water discharging handle. When a flexible pipe joint is butt-jointed, the fire cock can be open, and when the flexible pipe joint is withdrawn, the fire cock can be closed. The flexible pipe joint of the utility model is provided with a push tube. Under the function of a spring, a valve core in the fire cock can close a water outlet pipe. When the flexible pipe joint is butt-jointed, the push tube is inserted into the water outlet pipe, the valve core is pushed off by the push tube, and the fire cock is open; when the push tube is withdrawn, the valve core resets, and the fire cock is closed. The flexible pipe joint of the other practice example is provided with a spiral pipe, and the edge of the pipe is provided with a notch; the edge of the water outlet of the valve core in the fire cock is provided with a tenon, and the notch of the spiral pipe coincides with the notch of the spiral pipe. When the flexible pipe joint is spiral connected and rotated back, the valve core can be rotated synchronously, and the fire cock can be open and closed automatically.

Description

Automatic fire cock

The utility model is about a kind of self-action fire hydrant, is mainly used in fire-fighting and other emergent place, belongs to fire-fighting equipment.

Known at present, domestic and international employed fire hydrant all has flush handle as shown in Figure 1, during use, will dock fire hose connection 1 earlier, and the handle 6 of outwarding winding again just can be out of the water.In this special place of fire-fighting, the trivial operations that just seems, the operating time is long.When the condition of a fire is urgent, miss an opportunity because of a delay, even can't open fire hydrant.Reason brings about great losses to every year human lives and properties in view of this.

The purpose of this utility model just provides a kind of fast self-action fire hydrant of operating, and this fire hydrant does not have flush handle, profile such as Fig. 2.During the butt joint fire hose, fire hydrant is opened automatically, unloads hose coupling, and fire hydrant is closed automatically.

The purpose of this utility model is achieved in that the composition surface side of fire hose connection stretches out an ejector sleeve, and ejector sleeve puts in docking operation in the fire hydrant outlet pipe.A spool is arranged in the fire hydrant shell, and spool is the pipe of end sealing, and the radius of Closed End is greater than the spool radius, side, blind end garden is evenly equipped with the side inlet opening, spool is contained in the fire hydrant outlet pipe, and the valve core opening end is towards fire hydrant outlet pipe direction, and spool is along endwisely slipping in the bolt outlet pipe.Between the spool sealing surface outside and fire hydrant shell, be placed with a compressed spring.At ordinary times, because the effect of spring, spool is pushed to the delivery port direction of bolt shell, the outlet pipe of the sealing surface sealing bolt shell of spool, and fire hydrant is closed.During use, the ejector sleeve on the fire hose connection puts in the fire hydrant outlet pipe, and ejector sleeve is the spool pusher, and fire hydrant is opened automatically.When backing off hose coupling, spool is resetted by force by spring, and bolt shell outlet pipe is closed again, and fire hydrant is closed automatically.So just realized the automatic open close of no flush handle fire hydrant.This implementation is an ejector sleeve formula fire hydrant.

Another implementation of the utility model purpose is such: a coil is stretched out on the composition surface of fire hose connection, and the coil mouth of pipe has a pair of concave indentation, and in the docking operation, coil stretches in the effluent pipe mouth of fire hydrant.A spool is arranged in the fire hydrant shell, and spool is a tubulose, and an end margin has boss, its radius is greater than spool, and there is a groove that cooperates with it at bolt shell rear portion, can prevent its axial motion in the bolt shell, the sidewall of this end has an inlet opening, the other end edge of spool stretches out a pair of tenon, and its size and position are corresponding identical with the coil breach of hose coupling, spool axially assembles along the fire hydrant outlet pipe, tenon is towards bolt outlet pipe direction, and spool can rotate by warp-wise in pipe, can not axial motion.When bolt shell water inlet overlapped with the spool inlet opening, fire hydrant was opened, and when two water inlets staggered, fire hydrant was closed.Fire hydrant is in the closed position when just adorning.During use, the coil of fire hose connection puts in the fire hydrant outlet pipe, when coil breach and spool tenon coincide, swivel joint, the chucking joint is paid, and meanwhile spool will rotate with joint, overlap with the fire hydrant water inlet to the spool inlet opening, fire hydrant is all opened.Fire hose connection must screw to the gap position of the initial insertion that the cassette joint pays, and just can take off hose coupling, and in the cycle process, spool is rotation synchronously thereupon, gets back to original closed position, and fire hydrant is closed automatically.This implementation is a coil formula fire hydrant.

Above-mentioned two kinds of implementations, the splicing of fire hose connection and fire hydrant all adopts present known cassette joint to pay structure, and difference is to stretch out a pipe on the composition surface.For preventing infiltration and leak that adopt three grades of sealing rings, during closed condition, the inboard of the spool blind end of ejector sleeve formula fire hydrant is with an annular seal ring, guarantees the sealing of spool and bolt shell sealing surface.Contacting on the circumferentia of coil formula bolt shell water inlet and spool, stud with annular seal ring in the bolt shell, guarantee the sealing between spool and the bolt shell.Docking operation, bolt shell effluent pipe mouth inwall studs with annular seal ring one, and ejector sleeve or coil stretch in the bolt outlet pipe, and sealing ring tightly wraps up ejector sleeve or coil, prevents to leak along the pipe outer wall.Leakage when the sealing ring in the cassette joint of bolt and hose coupling is paid can prevent to open.The cassette interface of hose coupling is in the joint centre position, and for ease of butt joint, at the cassette interface outer wall, radially 180 ° are equipped with a pair of operating grip.

Owing to adopt such scheme, cancelled flush handle, in the butt joint fire hose, fire hydrant is opened automatically, and is apparent, simpler and more direct and saved the operating time than present known fire hydrant, has practicality.

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is present known band handle fire hydrant outline drawing.

Fig. 2 is the automatic fire hydrant outline drawing that the utility model proposes.

Fig. 3 is an ejector sleeve formula fire hydrant hose coupling schematic diagram.

Fig. 4 is an ejector sleeve formula fire hydrant partial cutaway schematic.

Fig. 5 is the partial cutaway schematic after the butt joint of ejector sleeve formula fire hydrant.

Fig. 6 is a coil formula fire hydrant hose coupling schematic diagram.

Fig. 7 is a coil formula fire hydrant partial cutaway schematic.

Fig. 8 is the partial cutaway schematic after the butt joint of coil formula fire hydrant.

Among the figure 1, fire hose connection, 2, the hose operation handle, 3, ejector sleeve, 4, coil, 5, fire hydrant shell, 6, flush handle, 7, the bolt water inlet pipe, 8, the bolt outlet pipe, 9, spool, 10, spool side inlet opening, 11, the spool Closed End, 12, the spool chimb, 13, spool tenon, 14, sealing ring, 15, sealing ring, 16, sealing ring, 17, sealing ring, 18, sealing ring, 19, bolt cassette interface, 10, the hose coupling cassette interface, 21, the coil breach.22, spring.23, bellows, 24, spiracle.

Be ejector sleeve formula fire hose connection shown in Fig. 3,2 is ejector sleeve, and 18 is sealing ring.Fig. 4 is an ejector sleeve formula fire hydrant partial sectional view, and bolt is a closed condition.5 is the fire hydrant shell, and spool 9 can slide in bolt outlet pipe 8, and the close end of spool 9 envelopes 11 inboards are with sealing ring 14, and compression spring 22 is placed between blind end 11 outsides and bolt shell 5 of spool 9, and spool 9 is compelled to push to position shown in Figure 4, and fire hydrant is closed.During use, ejector sleeve 3 inserts in the outlet pipes 8, when

cassette interface

19 and 20 assemblies are tight, spool 9 is pushed to position shown in Figure 5 by ejector sleeve 3, and the fire hydrant complete opening is if back off joint 1, then bolt inner spool 9 is closed under spring 22 effects by force, and at this moment fire hydrant is closed voluntarily, and for example Fig. 4.The effect of bellows 23, the influence of hydraulic pressure in the time of can reducing butt joint, its contact spool end is a blind end, openend and body seal are fastening.When bellows extension and compression, by the spiracle suction and discharge.

Be coil formula fire hose connection shown in Fig. 6,4 is coil, and 18 is sealing ring.Fig. 7 is a coil formula fire hydrant schematic diagram, and spool has been fixed on closed condition among the figure when assembling, and promptly stagger fully with bolt water inlet pipe 7 in spool inlet opening 10, and sealing ring 16 improves closed performance, and is impermeable.During use such as Fig. 8, coil 4 puts in the bolt outlet pipe 8, and when breach on the coil 4 21 and tenon 13 on the spool 9 coincide,

cassette interface

19 and 20 just in time can rotate and piece together tightly this moment, and rotation cassette interface 20 is to final position, and spool 9 rotates synchronously with hose coupling.Inlet opening 10 on the spool 9 just in time overlaps with water inlet pipe 7 on the bolt, the fire hydrant complete opening, and during the cycle hose coupling, spool 9 goes to closed position, and for example Fig. 7 synchronously.

Above-mentioned two kinds of fire hydrant outlet pipe inner wall sealing circles 17 are the docking operation sealing ring, are fitted between bolt delivery port end face and the bolt cassette interface.Sealing ring 18 is the cassette interface sealing ring, is used for cassette interface and pieces together the sealing of tight back.The closed condition sealing ring is 14 and 16.

Claims

1, a kind of automatic fire hydrant is made up of hose coupling and fire hydrant two parts, it is characterized in that: hose coupling composition surface side is stretched out a pipe, and cassette interface is contained in the joint middle part, and a pair of radially operating grip of 180 ° of installations is arranged on the joint outer wall.A spool is arranged in the fire hydrant shell, and spool one distolateral wall has the inlet opening, and the other end is towards bolt effluent pipe mouth direction, and is installed in the bolt shell outlet pipe, and bolt outlet pipe inwall is equipped with sealing ring, and sealing ring is fitted between bolt delivery port end face and the bolt cassette interface.

2, automatic fire hydrant according to claim 1, it is characterized in that: hose coupling composition surface side is stretched out an ejector sleeve, fire hydrant shell inner spool is the pipe of end sealing, the blind end plan radius is greater than the spool radius, uniform side inlet opening around the sealing newel post side is close to the sealing surface inboard and is with annular seal ring, places the compression spring between the spool sealing surface outside and fire hydrant shell, spring compressing spool sealing bolt outlet pipe, spring housing is contained in the bellows.Spool axially slides in outlet pipe.

3, automatic fire hydrant according to claim 1, it is characterized in that: a coil is stretched out on the composition surface of the cassette interface of hose coupling, the mouth of pipe is jagged, a spool is arranged in the bolt shell, spool is a tubulose, one distolateral wall has an inlet opening, this end margin has boss, its radius is greater than the spool radius, and there is a groove that cooperates with it at bolt shell rear portion, prevents that the spool string is moving, other end mouth of pipe edge extends tenon, coincide with the breach of coil, both rotate synchronously, and spool is installed in the bolt outlet pipe and can radially rotates.At the ring-type contact-making surface place of bolt shell and spool, stud with one annular seal ring in the bolt shell.