CN214500347U - Fire hydrant capable of being disassembled and connected quickly - Google Patents

Abstract

The utility model provides a fire hydrant that can tear open fast and connect, sets up the external screw thread on quick-operation joint, and the inner peripheral surface sets up the seal receptacle and sets up sealing device, cup joints through external screw thread and quick-operation nut, and the pipe fitting catch of elastic construction body matches with the quick-operation nut, extrudees sealing device when locking external pipe fitting, with the peripheral locking of pipe fitting. The utility model discloses simple structure disassembles and connects very conveniently, is applicable to the configuration on various fire hydrants, is an ideal component of emergency facilities.

Description

Fire hydrant capable of being disassembled and connected quickly

Technical Field

The utility model relates to a fire fighting equipment that can tear open fast for indoor or outdoor fixed or the fire fighting equipment that the activity was arranged specifically is a fire hydrant that can tear open fast.

Background

The fire hydrant that the tradition used uses a card formula piecing devices more, sets up a rotatory latch device at fire hydrant delivery port end, lock joint delivery end cover at ordinary times, unscrews the end cover during the use, connects fire-fighting belt or spray gun etc. china patent 202010516623.X discloses "a fire hydrant quick connect structure for public safety", and it inserts the fire hydrant delivery port through a small-bore intubate, is fixed with the connection fixed plate in two pipe diameter outsides, by the bolt rigid coupling.

Disclosure of Invention

The utility model discloses a but fire hydrant of quick disconnect provides the fire hydrant that can the high-speed joint of efficiency or disassemble for the fire-fighting equipment of present indoor or room configuration.

A fire hydrant capable of being quickly disassembled and assembled comprises a fire hydrant body and a switch valve arranged in the fire hydrant body, wherein the position of the switch valve corresponds to a water outlet of the fire hydrant; the quick-connection nut is internally provided with a hollow cavity, the hollow cavity comprises a columnar cavity and a conical cavity, the wall of the columnar cavity is provided with an internal thread, and the quick-connection nut is sleeved on the peripheral surface of the quick-connection joint in a matched manner through the internal thread; the pipe fitting locking ring is provided with a pipe fitting locking ring with a hollow cavity inside, the pipe fitting locking ring comprises at least one conical component with the shape matched with the conical cavity, an axially through cutting groove is formed in the conical component, and the axial inner end face of the pipe fitting locking ring is connected with the axial outer end face of the sealing device.

The fire hydrant capable of being quickly disassembled and assembled is characterized in that a pressure pad is arranged between the sealing device and the pipe fitting lock ring.

The fire hydrant capable of being quickly disassembled and connected is characterized in that the wall of the hollow cavity of the pipe fitting lock ring is provided with lock teeth.

The fire hydrant capable of being quickly disassembled and assembled is characterized in that the sealing device is of a double-layer structure, the sealing device of the double-layer structure comprises an outer-layer cylindrical sealing body and an inner-layer conical sealing layer, the conical sealing layer comprises a lower basal layer and an upper annular joint layer, the inner circumferential surface and the outer circumferential surface of the annular joint layer are conical surfaces, and the radial section thickness of the annular joint layer is gradually thinned from the basal layer to the top.

The fire hydrant capable of being quickly disassembled and connected is characterized in that the pipe fitting lock ring is composed of two symmetrical or asymmetrical conical components.

The fire hydrant capable of being quickly disassembled and assembled is characterized in that the pipe fitting lock ring comprises two conical components, a cylindrical component is arranged between the two conical components, and the pipe fitting lock ring is provided with a cutting groove which is axially communicated.

The fire hydrant capable of being quickly disassembled and assembled is characterized in that an annular groove is formed in the lower portion of the conical sealing layer.

The fire hydrant capable of being quickly disassembled and assembled is characterized in that the bottom surfaces of the two symmetrical conical components are overlapped and take the overlapped bottom surfaces as symmetrical surfaces, and the two conical components are provided with axially through cutting grooves.

The fire hydrant capable of being quickly disassembled and assembled is characterized in that one conical member in the two asymmetric conical members is matched with the cylindrical cavity of the quick-assembling nut, and at least two cutting grooves are formed in the conical member matched with the cylindrical cavity.

The utility model discloses a fire hydrant that can tear joint fast open sets up the external screw thread on quick-operation joint, and the inner peripheral surface sets up the seal receptacle and sets up sealing device, cup joints through external screw thread and quick-operation nut, and elastic construction's pipe fitting catch matches with the quick-operation nut, extrudees sealing device in the locking external pipe fitting, with the peripheral complete locking of pipe fitting. The utility model discloses simple structure disassembles and connects very conveniently, is applicable to the configuration on various fire hydrants, is an ideal component of emergency facilities.

Drawings

FIG. 1 is a schematic sectional view of a quick disconnect fire hydrant;

FIG. 2 is a schematic sectional view of the quick connector;

FIG. 3 is a schematic cross-sectional view of the quick coupling nut;

FIG. 4 is a schematic cross-sectional view of a tubular locking ring;

FIG. 5 is a view of a symmetrical double tapered tube lock ring profile;

FIG. 6 is a schematic view of a locking ring for a pipe fitting having a cylindrical middle and tapered ends;

FIG. 7 is a schematic view of an asymmetric double tapered tube lock ring;

FIG. 8 is a schematic view of another embodiment of an asymmetric double tapered tube locking ring;

fig. 9 is a schematic view of the sealing device.

In the figure, 1-hand wheel; 2-fire hydrant body; 3-switching valve; 4-speed joint; 5-sealing device; 6-a pressure pad; 7-a pipe fitting locking ring; 8-external pipe fitting; 9-ring groove; 10-quick-connecting a nut; 11-a base; 12-external threads; 13-internal screw thread; 14-a cylindrical cavity; 15-a tapered cavity; 16-a conical member; 17-locking teeth; 18-a sealing seat; 19-a cylindrical member; 20-cutting a groove; 21-cylindrical seal body; 22-tapered sealing layer; 23-a base layer; 24-loop tie layer.

Detailed Description

The following describes a fire hydrant capable of being disassembled and assembled quickly in detail with reference to the attached drawings.

The utility model discloses an overall structure is as shown in figure 1, and the fire hydrant of current facility includes base 11, fixes fire hydrant body 2 on the base is provided with ooff valve 3 in this body of fire hydrant, passes through the hand wheel 1 that disk seat, valve rod link to each other with the ooff valve, and open the side of fire hydrant body has one or several delivery ports, is fixed with quick-operation joint 4 on the delivery port, and wherein the fixed mode of quick-operation joint can adopt various forms such as welding, flange joint.

As shown in fig. 2, the outer circumference of the quick coupling has an external thread 12, the inner circumference of the quick coupling has a sealing seat 18 at a certain depth, a sealing cavity is formed from the sealing seat to the end face of the quick coupling, and the sealing cavity is a cylindrical cavity or a cavity with a slight taper (small taper). The sealing device 5 is arranged in the sealing cavity, and the axial inner end surface of the sealing device is arranged on the sealing seat. The axially outer end face of the sealing means is connected to a pipe fitting locking ring 7, and in a preferred embodiment an annular pressure pad 6 is provided therebetween, which may be in the form of a gasket or a hollow cylindrical type pressure pad.

Fig. 3 shows that a quick coupling 10 is provided, which is adapted to the quick coupling and which is externally provided with a generally hexagonal or other polygonal shape to facilitate the operation of a wrench or the like. The quick-connecting nut is internally provided with a hollow cavity, the hollow cavity comprises two parts, one part is a columnar cavity 14 provided with an internal thread 13 matched with an external thread 12 of the quick-connecting joint, the other part is a conical cavity 15, and the conical cavity is positioned on one side of the outer end surface of the quick-connecting joint in the mounting state.

The pipe fitting locking ring 7 shown in fig. 4-8 is a hollow structure, and its external form at least includes a conical member 16 correspondent to the conical cavity 15 of the quick-coupling nut, said conical member is matched with the conical cavity and can be cover-connected in the conical cavity, and on the conical member 16 a cut groove 20 is cut. The pipe fitting locking ring can be in various forms on the basis of keeping one end matched with the conical cavity 15, such as a symmetrical double-conical structure shown in figures 4-5, the pipe fitting locking ring of the structure is composed of two conical components with overlapped bottom surfaces, the two conical components take the overlapped bottom surfaces as symmetrical surfaces, and the cutting grooves on the two conical components are axially through cutting grooves, and the structure has the best effect in research and development tests. The pipe lock ring shown in figure 6 is comprised of two conical members 16 sandwiching a cylindrical member 19. Fig. 7-8 show a tube lock ring made up of two asymmetric conical members, wherein the cut grooves 20 of the tube lock ring of fig. 7 are made only on one side of the conical member, and this form of cut groove can be made in two or more pieces, and is less effective if only one is made. The ability of the pipe lock ring of the above-described type to grip a pipe is greatly enhanced by the presence of the locking teeth 17 within the hollow cavity. Under the user state, the pipe fitting catch mainly has two effects, and external pipe fitting 8 is the centre gripping, keeps external pipe fitting can not drop under the effect of high pressure water. And secondly, the sealing device 5 is directly extruded, so that the sealing device deforms under pressure to realize sealing.

Fig. 9 shows an embodiment of the sealing device, which is matched with the sealing cavity in the quick coupling, the sealing device of this embodiment is a double-layer structure, and includes an outer layer cylindrical sealing body 21 and a tapered sealing layer 22, wherein the cylindrical sealing body may also be an outer surface structure with a small taper, the tapered sealing layer includes a base layer 23 and an annular joint layer 24, an annular groove 9 is provided at the lower part of the base layer, the base layer is formed by extending the cylindrical sealing body substantially towards the center, the inner circumferential surface is a tapered surface, the annular joint layer 24 is a tapered surface with both inner and outer circumferential surfaces, and the radial cross-sectional thickness thereof gradually thins from the base layer to the top.

The sealing device in application can also comprise various forms, such as a sealing element with a completely hollow cylindrical structure, or a sealing body formed by a plurality of overlapped sealing rings arranged in a sealing cavity, and the like.

When the quick-connecting pipe fitting is used, the sealing device 5 is placed in the sealing cavity, the pressure pad 6 and the pipe fitting locking ring 7 are sequentially placed, the quick-connecting nut 10 is sleeved on the quick-connecting head 4, the external pipe fitting 8 is inserted through the pipe hole of the pipe fitting locking ring 7 and the quick-connecting nut 10, and the end part of the external pipe fitting enters the axial inner end of the sealing device and is connected with the inner cavity of the quick-connecting head. Screwing the quick-connecting nut, moving the pipe fitting locking ring to the inner side under the axial force action of the quick-connecting nut and simultaneously extruding the pressing pad and the sealing device to deform the sealing device, and simultaneously, the quick-connecting nut also has a radial force action on the quick-connecting nut to gradually hold the external pipe fitting, when the quick-connecting nut is screwed down, the sealing device is extruded and deformed to completely seal the sealing cavity, the basal layer on the inner side of the sealing device is tightly attached to the outer wall of the external pipe fitting 8 to seal the external pipe fitting, and meanwhile, the inner conical surface of the encircling layer 24 is tightly attached to the outer wall of the external pipe fitting. The locking teeth 17 in the pipe locking ring lock the outer wall of the pipe. After the switch valve 3 is released, high-pressure water enters the external pipe fitting through the quick connector, and the pressure of the retained water in the inner cavity of the quick connector generates radial pressure on the annular joint layer, so that the sealing between the annular joint layer and the outer wall of the external pipe fitting is further enhanced.

Claims (9)

1. A fire hydrant capable of being quickly disassembled and assembled comprises a fire hydrant body (2) and a switch valve (3) arranged in the fire hydrant body, wherein the position of the switch valve corresponds to a water outlet of the fire hydrant, and the fire hydrant is characterized in that a quick coupling (4) is fixed on the water outlet, an external thread (12) is arranged on the outer circumferential surface of the quick coupling, a sealing seat (18) is arranged on the inner circumferential surface of the quick coupling, and a sealing device (5) with a hollow cavity inside is arranged on the sealing seat; the quick-connecting nut is provided with a quick-connecting nut (10), a hollow cavity is arranged inside the quick-connecting nut, the hollow cavity comprises a columnar cavity (14) and a conical cavity (15), internal threads (13) are arranged on the wall of the columnar cavity, and the quick-connecting nut (10) is sleeved on the peripheral surface of a quick connector in a matched manner through the internal threads; the pipe fitting locking ring is provided with a pipe fitting locking ring (7) with a hollow cavity inside, the pipe fitting locking ring comprises at least one conical component (16) with the shape matched with the conical cavity (15), the conical component is provided with a cutting groove (20) which is axially communicated, and the axial inner end face of the pipe fitting locking ring is connected with the axial outer end face of the sealing device.

2. A quick disconnect fire hydrant according to claim 1 in which a pressure pad (6) is provided between the sealing means and the pipe locking collar.

3. A quick disconnect fire hydrant according to claim 1 or 2 in which the locking teeth (17) are formed in the wall of the hollow chamber of the pipe locking collar (7).

4. A quick disconnect fire hydrant according to claim 1 or 2 in which the sealing means (5) is of a double layer construction comprising an outer cylindrical sealing body and an inner tapered sealing layer, the tapered sealing layer comprising a lower base layer and an upper annular layer, the inner and outer circumferential surfaces of the annular layer being tapered surfaces, the thickness of the radial cross section of the annular layer tapering from the base layer upwards to a top tapering off.

5. A quick disconnect fire hydrant according to claim 3 in which said pipe locking collar is comprised of two symmetrical or asymmetrical conical members.

6. A quick disconnect fire hydrant according to claim 3 in which said pipe lock ring includes two conical members with a cylindrical member (19) disposed therebetween, said pipe lock ring having an axially through cut-out slot (20).

7. A quick disconnect fire hydrant according to claim 4 in which the lower portion of said conical sealing layer is provided with an annular groove (9).

8. A quick disconnect fire hydrant according to claim 5 in which said two symmetrical cone members have bottom surfaces which coincide and are symmetrical about said coincident bottom surfaces, said two cone members having axially extending cut-out grooves.

9. A quick disconnect fire hydrant according to claim 5 in which one of said two asymmetric conical members mates with the cylindrical chamber (14) of the quick connect nut and the conical member mating with the cylindrical chamber has at least two cut out grooves (20).

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