CN201521738U

CN201521738U - Pipe joint of fire hose

Info

Publication number: CN201521738U
Application number: CN2009202333564U
Authority: CN
Inventors: 吴良江
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-28
Filing date: 2009-07-28
Publication date: 2010-07-07
Anticipated expiration: 2019-07-28

Abstract

The utility model relates to a pipe joint of a fire hose, which mainly comprises a pipe joint body, a fastener and an elastic block, wherein the pipe joint body is provided with a sealing device at one end, a ring-shaped lug boss provided with an inclined surface is formed at the end part on the circumference of the body, and positioning grooves provided with inclined surfaces are formed on the peripheral surface of the ring-shaped lug boss at intervals; the movable fastener is sleeved on the circumference of the pipe joint body; and the elastic block provided with the inclined surface is arranged on the inside wall of the fastener, a slope projection is formed on the back of the elastic block, the elastic block can be inwardly and independently withdrawn when compressed, and the projection can drive the elastic block to withdraw when compressed. The structure removes the male and female pipe joints, the butting is convenient, precious time is saved, and the management of spare parts is facilitated.

Description

Fire hose pipe joint

Technical field

The utility model relates to extinguisher, refers in particular to the pipe joint of fire-extinguisher water hose.

Background technique

At present, at fire-fighting domain, normally used water band pipe joint is two kinds of pipe joints of male and female bayonet socket, usually keeping at a certain distance away on the madial wall of female pipe joint has offered at least 3 installation hole slots, in each installs hole slot an elastomer block with an arc shaped surface is installed, and this elastomer block is connected by spring and installs in the hole slot, when not being under pressure, elastomer block is protruded the madial wall certain distance under the support of spring and balance, when being under pressure, elastomer block is suppressed in the inside sidewall and withdrawn; Public pipe joint is provided with a circle draw-in groove, in use, the butt joint of male and female pipe joint, the arc shaped surface of elastomer block is under the butt joint extruding of public pipe joint, elastomer block is under pressure inwardly withdraws, when elastomer block was withdrawn into certain distance, elastomer block entered in the draw-in groove by the obstruction of public pipe joint, elastomer block is also because returning to original position be stuck in the draw-in groove under internal pressure disappearing in the suppressing of spring of being subjected to combines the male and female pipe joint.For pipe joint butt joint back water can not flow out from the butt joint slit, the end face of pipe joint is provided with seal ring and docks the back sealing.This pipe joint structure is simple, but also there is certain defective in it: because the fire-fighting general execution all is hot job, therefore sometimes owing to out of trim or not careful it is pressed for time, the male and female pipe joint is prepared to father-in-law or female pipe joint, can't uses the waste quality time in use; Have, because the branch of male and female is arranged, when executing the task, need distinguish male and female earlier could dock again, and wastes rescue time; And processing conditions difference when production and processing is for production is made troubles.

The utility model people works on the fire combat station for many years, and profound lesson is to this pipe joint with branch of male and female the inconvenience and the waste of time that are brought when executing the task, because when emergency rescue service, time is life, the time is exactly all.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of fire hose reel joint that does not have the branch of male and female, no matter in emergency circumstances at what, as long as with pipe joint just can be to connecting, butt joint has efficiently been saved the quality time; And, when preparing, only need to prepare an a kind of pipe joint and get final product, when in use, a pipe joint has been broken, and can arbitrarily change another one, does not need to check earlier male and female, can not have influence on the use of the supporting pipe joint of another one; When manufacturing, only need process a kind of pipe joint and just can solve.

For solving the problems of the technologies described above, the technological scheme that the utility model provides is a kind of fire hose pipe joint, it mainly is included in the pipe joint body that the end is provided with seal arrangement, be arranged on the fastener of described pipe joint body periphery, it is characterized in that described pipe joint body peripheral end is provided with an annular boss with an inclined-plane, keeping at a certain distance away on described boss outer circumferential face offers along the locating slot of its outer circumferential face to described boss body interior diagonally extending certain distance; Described fastener can move in certain distance along described pipe joint body, near keeping at a certain distance away to protrude around madial wall on the front end madial wall of described fastener at least 3 lockup devices are being installed, described lockup device can rebound to described fastener madial wall inside under certain active force; At each described lockup device rear end certain distance one extractor that protrudes described fastener madial wall is installed, described extractor can be to the inner withdrawal of its place slotted eye when being subjected to certain active force; Between described lockup device, described extractor and described fastener madial wall, has a communicating space, one lever is positioned at described space, its fulcrum is fixed on the described fastener madial wall of described lockup device one side, described lever pass behind the described lockup device its free end penetrate described extractor and fixing within it; Described lever satisfies when passing described lockup device when suppressing described lockup device separately and move in described fastener madial wall not can be because of leverage drives described extractor motion, but then can follow its outside motion because of leverage drives described extractor when described lockup device moves outside described fastener madial wall.

Described lockup device is for opening the slotted eye of certain depth on described fastener madial wall, being equipped with one in the described slotted eye protrudes described fastener madial wall and has the bullet piece on an inclined-plane, offer the tilted slotted hole that connects its both sides on the described bullet piece, described bullet piece can be withdrawn in its place slotted eye under pressure; Described extractor is equipped with the projection of the described fastener madial wall of a protrusion for to offer another slotted eye on described fastener madial wall in it, stating projection can be to the inner withdrawal of its place slotted eye when being under pressure; In described fastener,, offer a space on the direction of projection along described bullet piece, described space and described bullet piece, the slotted eye at described projection place is communicated with; Described lever penetrates described projection and is fixed on its inside after passing the tilted slotted hole of offering on the described bullet piece.

Described bullet piece supports by elastic element.

Described elastic element is spring or spring steel plate.

On described pipe joint body upper-end surface, offer an annular recess along its length direction, in described groove, be provided with an annular seal, an end of at least 4 elastic elements is connected with described annular seal; Wherein at least 2 elastic element the other ends that are provided with at interval are connected on the projection of the described pipe joint body of a protrusion, described projection is arranged in the slotted hole of offering along the flexible direction of the described elastic element that is connected with described projection, when described fastener moves forward, can drive described projection and make described annular seal stretch out described pipe joint end face along the described elastic element of its connection of described elongated slot motion compresses; At least 2 elastic element the other ends that are provided with at interval are fixed in the described groove in addition.

Described Sealing is a rubber seal.

The slotted eye that described projection is installed is inner for square, along a side of described fastener length direction near described slotted eye open end to lopsidedness, the relative both sides at the square opening position in the described slotted eye respectively offer a vertical slot, wherein the vertical slot with described bullet piece next-door neighbour is the perforation vertical slot, and its slotted eye that described projection will be installed is communicated with the slotted eye that described bullet piece is installed; Described lever passes on the rotatable global that described perforation vertical slot is connected described projection inside, forms a pole on the opposite side of described projection, and described pole is movable to be positioned at described non-through vertical slot; Its bi-side along described fastener length direction of described projection are arc shaped surface; The position of passing described projection at described lever offers a hole, and a spring is fastened on described lever, and its elastic force end is close on the side of described projection with respect to described slotted eye inclined-plane, and described projection is tilted to described slotted eye inclined-plane because of the elastic force effect; Near on the side on described slotted eye inclined-plane an elastic element is installed also at described projection, it can guarantee described projection inclination several angle and keep protruding on described fastener madial wall.

The one described lever of conflict also is installed and is made it not be subjected to external force to make the elastic element that the time spent keeps steady state

When using, the fastener of a pipe joint moves forward to pipe joint, and this is external, and the fastener of another pipe joint moves backward to the position that can not move again, with the fastener and the butt joint of pipe joint body of two pipe joints; Bullet piece with inclined-plane is withdrawn to fastener inside under the extruding of the annular boss of the pipe joint body that has the inclined-plane equally, make the bullet piece by behind the annular boss, under the effect of suppressing of elastic element, return to original convex position again, be stuck in annular boss one side, then fastener is rotated, the projection of bullet piece back enters the locating slot inclined-plane and enters locating slot, this projection extruding force on the annular boss contacting piece disappears at this moment, the bullet piece is not having under the pressure of lever yet, protrudingly under the suppressing of elastic element returns to the annular boss place that original position is stuck in another pipe joint; Along with moving forward of fastener, drive travels forward by the projection that elastic element is connected with seal ring, seal ring protruding conflict under the suppressing of elastic element is sealed in the enterprising line pipe of the end face of another pipe joint body, because Sealing is connected with elastic element, therefore when conflict pressure was too big, conflict pressure can be made seal ring slightly backward and compress, the excessive damage that causes seal ring of pressure of avoiding conflicting, at this moment, the elastic element that is fixed in the groove then is stretched condition; When using end, the fastener of counterrotating snap close, the projection on the fastener upwards made projection obtain the conflict pressure of pipe joint body and withdrew to the fastener internal motion to inner rotary along the inclined-plane of locating slot this moment, it drives lever motion simultaneously, under the effect of lever, the bullet piece also to the withdrawal of fastener internal motion, is retracted to the outer circumferential face that has left annular boss until the bullet piece, outwards draw back fastener then fastener and pipe joint body are broken away from, finish use; At this moment, Sealing is regained in pipe joint body end face under the effect that is fixed on the elastic element on the groove in addition, has avoided that Sealing is worn when not using.

In this structure, the bullet piece offers the space of perforation bullet piece both sides in the position that lever passed, and lever just is located in this space; When the bullet piece is not squeezed power and protrudes on fastener, lever contacts with the inner end in this space, when the bullet piece was subjected to extruding force to fastener inside separately, the bullet piece was withdrawn in fastener, can not be subjected to the extruding campaign of bullet piece when the bullet piece is inwardly withdrawn owing to existence regulations and parameters this moment in this space; When having only projection on the fastener to be subjected to extruding force to fastener inside, just can drive lever to the fastener internal motion, this moment, lever pushed the surface of contact of the inner end in this space, drove the bullet piece and inwardly withdrew.

Structure described in claim 7, it comparatively speaking uses more convenient: projection is under the state that normally is not squeezed, be the heeling condition that tilts to its slotted eye inclined-plane, place, because the effect of two elastic elements, one elastic element makes it tilt to the inclined-plane, and another elastic element makes it unlikely to the inclined-plane overbank, keeps projection under heeling condition, also protrude the fastener madial wall, and its protrusion height satisfies the annular boss of can conflicting by annular boss the time; In use, the extrapolated pipe joint body of fastener, bullet piece inwardly compress by inclined-plane conflict annular boss and pass through, and projection also tilts to pass through annular boss because of the power that compresses that is subjected to annular boss to slotted eye inclined-plane, place; When itself and another pipe joint fastening, the bullet piece makes two pipe joint lockings after being stuck in the annular boss of another pipe joint, and at this moment, the projection of inclination may compress in the locating slot of annular boss outer circumferential face or annular boss; Rotary buckle after using end, the projection that tilts then enters in the locating slot and in the conflict of locating slot, become plumbness by heeling condition, at this moment, projection is to the slotted eye internal motion and drive lever and inwardly move, and finally makes the bullet piece break away from annular boss by the inside motion of lever drives bullet piece again and withdraws from.Release the back bullet piece state that under the elastic force effect, restores balance, this moment, it outwards moved by the lever drives projection, when projection outwards moves to slotted eye incline position place, elastic element by the inclined-plane of slotted eye dorsad one side on the projection makes projection tilt to the slotted eye inclined-plane, make it keep suitable angle of inclination by the elastic element near slotted eye inclined-plane one side on the projection, return to state of equilibrium.

The utility model has only a kind of pipe joint, need not distinguish male and female and can use; And it docks convenient, and an extruding one rotation can be finished butt joint, has made things convenient for operation, has saved valuable time; And in the manufacturing process, only need a cover processing technology and mould to produce by batch, saved cost of production; When a pipe joint damages therein, can directly utilize good the changing of another one, complete preparation when having avoided the fire-fighting spare part to prepare is for the pipe joint spare parts management also brings great convenience.

Description of drawings

Fig. 1 the utility model sectional structure chart

Fig. 2 the utility model annular boss is faced structural representation

Another embodiment's of Fig. 3 the utility model convexity block structured cross-sectional structural representation

Fig. 4 Fig. 3 convexity block structured is along the longitudinal sectional view of fastener length direction

Embodiment

Now lift a preferred embodiment and in conjunction with graphic its structure is specifically described, referring to Fig. 1～Fig. 2, pipe joint of the present utility model mainly comprises pipe joint body 1, fastener 2, and lockup device, extractor, wherein:

Pipe joint body 1, it is a hollow tube, forms an annular boss 11 on its front end periphery wall, and these annular boss 11 shapes are seen as the open circles taper of removing wedge angle from the front, and its side away from pipe joint body end face is the plane; Keep at a certain distance away on the outer circumferential face of this annular boss 11 and offer along 3 positioning grooves 111 of its outer circumferential face to boss body interior diagonally extending certain distance, this positioning groove 111 can connect the two ends of annular boss 11, also can be the positioning groove that does not connect; On the end face of pipe joint body 1, offer an annular recess 12 with certain depth, in this annular recess 12, keep at a certain distance away and be provided with six springs 121, wherein on pipe joint body 1 outer wall of 3 spring correspondences that are provided with at interval, offer 3 slotted holes, 3 projections 122 are positioned at annular recess 12, and passing a slotted hole protrusion respectively on the outer wall of pipe joint body 1, its protrusion height satisfies when fastener moves and can move along slotted hole forward under the drive of fastener; Lay respectively at slotted hole below spring and be connected with 3 projections 122 respectively near groove 12 bottoms one end, 3 spring one ends that are provided with at interval directly are connected with groove 12 bottoms respectively in addition; One Sealing 123 is arranged in the opening end of groove 12, and it connects with the end of 6 springs near groove 12 opening ends, and this spring number can be more than 4, and the sealing part is a rubber material, also can be that other have flexible sealing material;

Fastener 2, its profile is the hollow and annular body behind two horizontal strokes about type is removed, the place is provided with several positioning blocks 13 at pipe joint body certain position, this positioning block 13 can be a spring clamp, this fastener 2 tubules footpath body 21 and can move in this interval between this positioning block 13 and annular boss 11; Projection 122 is positioned at the body front end of the little caliber of fastener 2, it highly satisfies when fastener 2 moves, can drive projection 122 and move forward, thereby drive the length of spring compressed be connected with projection 122, make by spring force again and stretch out groove 12 with spring the other end attached seal and seal; This fastener 2 outwards is bent to form a big caliber body 22 that is connected with tubule footpath body forward from the front end of its tubule footpath body, the inner diameter of this big caliber body is slightly larger than the maximum outside diameter of annular boss 11, projection 122 is positioned at inwall one side of this fastener 2, and and its inwall between have certain interval; When fastener 2 moves forward, the front end certain distance of its big caliber body 22 extended pipe joint bodies 1;

Lockup device, at the madial wall of big caliber body 22 apart from its front end a distance, the hole slot 23 that keeps at a certain distance away and offer 3 tool certain depths around its madial wall, the bullet piece 24 of one protrusion madial wall is installed in this hole slot, this bullet piece 24 is fixed in this hole slot by 2 springs, it also can be a spring or many springs, and this spring also can be a spring steel plate; These bullet piece 24 its protrusion sides outside madial wall near pipe joint body front end are arc shaped surface, certainly, also can be the inclined-planes; In bullet piece 24, offer the surface groove with certain depth of its bi-side, front and back of a perforation; Bullet piece 24 is subjected to can withdrawing in its residing hole slot when internal pressure;

Extractor, on the big caliber body of the fastener madial wall of distance bullet piece 24 rear end certain distances, also offer with the corresponding hole slot 25 of hole slot 23 numbers, the projection 26 of the big caliber body madial wall of one protrusion is installed in this hole slot 25, this projection is the inclined-plane near the one side of pipe joint body front end, also can be arc shaped surface; Offer a hole slot at this projection near on pipe joint body front end one side; Projection 26 can be to the inner withdrawal of fastener when being under pressure;

Bullet piece 24 on the big caliber body of fastener 2 and place, projection 26 positions, also offered a space, hole slot 23 is passed in this space and hole slot 25 makes hole slot 23, hole slot 25 and this spatial communication, one lever 28 passes the perforation surface groove in the bullet piece 24, the one end penetrates in the hole slot in the projection 26 and is fixed on the projection 26, its another support end is fixed on the position of the front end of close pipe joint body 1 in this space, lever is connected on the fulcrum after passing bullet piece 24 for convenience, can on the fastener wall of its fulcrum position, offer corresponding mounting hole and arrive the fulcrum position, lever is fixed on its fulcrum by mounting hole; When this lever 28 passes the perforation surface groove of bullet piece 24, contact with the inclined-plane of this surface groove, also leave certain space in this surface groove this moment; When bullet piece 24 is subjected to internal pressure, separately inwardly during withdrawal, can not drive lever motion, and when projection 26 is subjected to inside pressure and drives lever and move in fastener, corresponding lever can drive bullet piece 24 inwardly motion withdraw; Above-mentioned bullet piece 24, projection 26 be not when being subjected to external force, and its protrusion height satisfies when moving forward out pipe joint body 1 front end, can be subjected to the obstruction of annular boss 11, and projection 26 protrusion heights are less than bullet piece 24 protrusion heights; The number distance that above-mentioned projection 26 is provided with at interval equates with the number distance that annular boss 11 is provided with at interval;

In use, the fastener 2 of one of them pipe joint moves to the pipe joint front end, bullet piece 24 on it, the inclined-plane of projection 26 is squeezed in annular boss 11 places, make bullet piece 24, projection 26 is subjected to after the inside extruding force to the inner withdrawal of fastener, makes bullet piece 24 projections 26 on the fastener 2 move to the front end of annular boss 11; At this moment, fastener 2 also drives projection 122 and moves, and makes seal ring stretch out groove 12 under spring pressure; The fastener of another one pipe joint need not move to pipe joint body front end; When butt joint, stretch out the fastener and the extruding of another pipe joint body of the pipe joint of annular boss 11 front ends, bullet piece 24 under the extruding of the annular boss of pipe joint body, projection 26 inwardly withdrawal makes bullet piece 26 on the fastener move to the back of the annular boss 11 on another pipe joint body, this moment, two pipe joint bodies touched together, then fastener is turned clockwise, at this moment, projection 26 enters locating slot along the trough inclined-plane, location on the pipe joint body makes projection 26 return to the state that does not stress, this moment bullet piece 24 do not have lever under internal pressure, under the effect of spring, outwards eject, and drive lever and outwards move, make bullet piece 24, projection 26 returns to original convex position, at this moment, the rear end that bullet piece 24 is stuck in annular boss 11 links together two pipe joints, and the seal ring pipe joint end face of also conflicting seals; When breaking away from separately, the counterrotating fastener, projection 26 outwards moves along the locating slot inclined-plane, and be subjected to the extruding force of annular boss gradually, under the extruding force effect, projection 26 is inwardly withdrawn, and drives lever and inwardly moves, lever under internal pressure, the bullet piece 24 inwardly withdrawal outside circumference that break away from annular boss unplugs then two pipe joints separately then; At this moment, the fastener of one of them pipe joint also stretches out the front end at its pipe joint body, fastener is moved backward, projection 26 bullet pieces 24 are withdrawn under the effect of annular boss extruding force, the rear end that makes fastener move to annular boss is in not user mode, at this moment, an end that connects on the Sealing is fixed on 3 springs in the groove 12 and will stretches out the outer Sealing of groove by the bullet power of contracting and be withdrawn in the groove, makes it avoid being damaged when not using.

The projection 26 and the slotted eye 25 thereof of the extractor in the foregoing description also can followingly be provided with, and bullet piece and other parts of lockup device are provided with constant: referring to Fig. 3～Fig. 4; The slotted eye 30 that projection 40 is installed is opened on the madial wall of fastener 2, it is square slotted eye, making it in open end form an inclined-plane near open end to lopsidedness along a side of fastener 2 length directions, this inclined-plane makes these slotted eye 30 opening ends its inner square slotted eye of comparing be horn-like square aperture; On the bi-side of the square groove bore portion of these slotted eye 30 inside, offer a vertical slot respectively, wherein with hole slot 23 next-door neighbours' that bullet piece 24 is installed vertical slot for connecting vertical slot, it has been communicated with hole slot 23 and hole slot 30; Projection 40 is an arc shaped surface along the bi-side of fastener length direction, the one rotatable centre of sphere is installed in the inside near these projection 40 upper ends, lever 28 passes to pass behind the bullet piece 24 and connects the hole slots that pass in the projection 40 behind the vertical slot and be fixed on the centre of sphere, can satisfy projection 40 and rotate around lever 28; Pass at lever 28 on the relative another side of side of projection 40, form a pole, this pole is supported on the vertical slot 41 that connects the relative side of vertical slot turnably, and so, projection 40 can rotate around lever 28, also can move up and down along vertical slot; The position of passing projection 40 at lever 28 offers a hole, spring 42 is fastened on lever 28, its elastic force end is close in the groove of a side of projection 40, and this side is the side on slotted eye 30 inclined-planes dorsad, and this spring 42 can make projection 40 tilt to the inclined-plane of slotted eye 30; Near slotted eye 30 inclined-planes one side one spring 43 is installed also at projection 40, when projection 40 under spring 41 effect when slotted eye 30 inclined-planes tilt, these slotted eye 30 inclined-planes of 43 extruding of spring make projection 40 keep certain angle of inclination and maintain a certain distance the space with this inclined-plane, guarantee that it can not protrude on the fastener madial wall because of overbank.This projection 40 is when state of equilibrium, and it keeps heeling condition to protrude on the fastener madial wall, and the height that this projection protrudes satisfies it and can be subjected to its extruding by annular boss the time.For making lever 28 when not being subjected to external force, keep stable, a spring 44 is installed in slotted eye 30, this spring 44 compresses lever 28, guarantees projection 40 when being subjected to touching unintentionally, projection 40 nonvoluntary moving up and down.

Claims

1. fire hose pipe joint, it mainly is included in the pipe joint body that the end is provided with seal arrangement, be arranged on the fastener of described pipe joint body periphery, it is characterized in that described pipe joint body peripheral end is provided with an annular boss with an inclined-plane, keeping at a certain distance away on described boss outer circumferential face offers along the locating slot of its outer circumferential face to described boss body interior diagonally extending certain distance; Described fastener can move in certain distance along described pipe joint body, near keeping at a certain distance away to protrude around madial wall on the front end madial wall of described fastener at least 3 lockup devices are being installed, described lockup device can rebound to described fastener madial wall inside under certain active force; At each described lockup device rear end certain distance one extractor that protrudes described fastener madial wall is installed, described extractor can be to the inner withdrawal of its place slotted eye when being subjected to certain active force; Between described lockup device, described extractor and described fastener madial wall, has a communicating space, one lever is positioned at described space, its fulcrum is fixed on the described fastener madial wall of described lockup device one side, described lever pass behind the described lockup device its free end penetrate described extractor and fixing within it; Described lever satisfies when passing described lockup device when suppressing described lockup device separately and move in described fastener madial wall not can be because of leverage drives described extractor motion, but then can follow its outside motion because of leverage drives described extractor when described lockup device moves outside described fastener madial wall.

2. fire hose pipe joint according to claim 1, it is characterized in that described lockup device is for opening the slotted eye of certain depth on described fastener madial wall, being equipped with one in the described slotted eye protrudes described fastener madial wall and has the bullet piece on an inclined-plane, offer the tilted slotted hole that connects its both sides on the described bullet piece, described bullet piece can be withdrawn in its place slotted eye under pressure; Described extractor is equipped with the projection of the described fastener madial wall of a protrusion for to offer another slotted eye on described fastener madial wall in it, stating projection can be to the inner withdrawal of its place slotted eye when being under pressure; In described fastener,, offer a space on the direction of projection along described bullet piece, described space and described bullet piece, the slotted eye at described projection place is communicated with; Described lever penetrates described projection and is fixed on its inside after passing the tilted slotted hole of offering on the described bullet piece.

3. according to the described fire hose pipe joint of claim 2, it is characterized in that described bullet piece supports by elastic element.

4. fire hose pipe joint according to claim 3 is characterized in that described elastic element is spring or spring steel plate.

5. fire hose pipe joint according to claim 1, it is characterized in that on described pipe joint body upper-end surface, offer an annular recess along its length direction, be provided with an annular seal in described groove, an end of at least 4 elastic elements is connected with described annular seal; Wherein at least 2 elastic element the other ends that are provided with at interval are connected on the projection of the described pipe joint body of a protrusion, described projection is arranged in the slotted hole of offering along the flexible direction of the described elastic element that is connected with described projection, when described fastener moves forward, can drive described projection and make described annular seal stretch out described pipe joint end face along the described elastic element of its connection of described elongated slot motion compresses; At least 2 elastic element the other ends that are provided with at interval are fixed in the described groove in addition.

6. fire hose pipe joint according to claim 1 is characterized in that described Sealing is a rubber seal.

7. fire hose pipe joint according to claim 2, it is characterized in that installing the slotted eye inside of described projection for square, along a side of described fastener length direction near described slotted eye open end to lopsidedness, the relative both sides at the square opening position in the described slotted eye respectively offer a vertical slot, wherein the vertical slot with described bullet piece next-door neighbour is the perforation vertical slot, and its slotted eye that described projection will be installed is communicated with the slotted eye that described bullet piece is installed; Described lever passes on the rotatable global that described perforation vertical slot is connected described projection inside, forms a pole on the opposite side of described projection, and described pole is movable to be positioned at described non-through vertical slot; Its bi-side along described fastener length direction of described projection are arc shaped surface; The position of passing described projection at described lever offers a hole, and a spring is fastened on described lever, and its elastic force end is close on the side of described projection with respect to described slotted eye inclined-plane, and described projection is tilted to described slotted eye inclined-plane because of the elastic force effect; Near on the side on described slotted eye inclined-plane an elastic element is installed also at described projection, it can guarantee described projection inclination several angle and keep protruding on described fastener madial wall.

8. fire hose pipe joint according to claim 7 is characterized in that a described lever of conflict also being installed and being made it not be subjected to external force to make the elastic element that the time spent keeps steady state.