CN2606232Y

CN2606232Y - Rapid pipe joint for connectnig flexible pipe

Info

Publication number: CN2606232Y
Application number: CN 03228514
Authority: CN
Inventors: 胡志卿
Original assignee: Huayinglun Copper Products Ningbo Co ltd
Current assignee: Howard England Water Technology (Ningbo) Co., Ltd.
Priority date: 2003-01-22
Filing date: 2003-01-22
Publication date: 2004-03-10
Anticipated expiration: 2013-01-22

Abstract

The utility model discloses a rapid pipe joint for connecting flexible pipe, comprising a connection pipe body and at least two interface positions positioned on the connection pipe body. At least one of the interface positions is provided with one ring latch which has an outer diameter a litter longer than the inner diameter of the flexible pipe to be connected on the surface; after reamed, the end of the flexible pipe to be connected is covered outside the interface position; the utility model is characterized in that: the utility model also has a clamp ring firmly arranged at the end of the flexible pipe to be connected. The two ends of the clamp ring are provided with inner conical surfaces which are convenient to slide and press tightly; the connection pipe body is provided with at least one locating protrusion. With the structure, the special tool can be used to make the clamp ring slide and move to cause the flexible pipe to be pressed to distort, thereby making the ring latch pressed into the inner surface of the flexible pipe, thus, the flexible pipe is firmly fixed at the interface positions by interior and exterior forces of the clamp ring and the ring latch, so the utility model has a good sealing performance, a strong locking force, firm connection, thereby, meeting the requirements of people in terms of the flexible pipe and being suitable for spread and application in the connection of flexible pipe.

Description

A kind of quick coupling that is used to connect flexible pipe

Technical field

The utility model relates to a kind of pipe joint, especially refers to a kind of quick coupling that is used to connect flexible pipe.

Background technique

Pipe joint is that people are used for connecting tube in daily life; the parts that the valve and the fire hose are first-class; it has connection fast fitness for purpose; easy to use; the characteristics of good seal performance; particularly along with the raising of people's living standard; for improving the quality of transporting water facility; original irony tubing that uses and connect tube head and substituted by thin-wall stainless steel and sebific duct and aluminium-plastic composite pipe gradually; especially sebific duct; aluminium-plastic composite pipe; because it is compared with thin-wall stainless steel; at non-corrosive; do not influence the quality of water; under the plurality of advantages such as long service life; has moderate cost again; therefore in life, used by large-scale popularization; so require matching used with it pipe joint consumption also to rise significantly; and most pipe joint can not solve sealing well on the existing market; soundness; as the utility model patent of China number is that 91220931.3 " installing and removing rubber hose coupling fast " are exactly wherein a kind of; in its disclosed scheme; by the left and right joint body; seal ring is formed; the left and right joint body is that conical surface socket connects; each joint insertion portion has many clamp bar slots; because conical surface socket; make it have the anti-loose ability of self-locking; and inserting draw-in groove one sled with screwdriver set when taking apart opens; thereby have laborsaving quick; simple in structure; advantage easy to use; but find in actual use; the degree of being connected firmly of each sebific duct that it connects is not high; in the particularly mobile towing; usually can flexible pipe and joint be separated, thereby cause many inconvenience, to influence its normal use to people owing to overexerting.

Summary of the invention

Technical problem to be solved in the utility model is the defective that overcomes prior art, provides a kind of and is connected firmly, the quick coupling that is used to connect flexible pipe of good seal performance.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this quick coupling that is used to connect flexible pipe comprises connecting tube body and at least two interface positions that are positioned on the connecting tube body, have at least its outer surface to be provided with the annular latch that external diameter is slightly larger than footpath within the flexible pipe to be connected in the described interface position, be enclosed within after the end reaming of flexible pipe to be connected outside this interface position, it is characterized in that, also include collar, tightly be enclosed within outside the end of described flexible pipe to be connected.

Use for convenient, described collar two ends can be provided with the inner conical surface of being convenient to slide and compressing.

For ease of installing, can on described connecting tube body, be provided with at least one positioning convex; This positioning convex is good with flange forms.

The annular latch at described interface position is good with 2～4.

Described pipe joint body can be through-type or three-way type or four-way type or curved head type.

Fast joint structure of the present utility model can be all adopted at the interface position of described pipe joint, also can have part interface position to be shaped on outside thread or internal thread, links to each other with flexible pipe to be connected with common thread connecting mode, perhaps adopts other Placements.

Compared with prior art, advantage of the present utility model is: because its outer surface that has at least at interface position is provided with the annular latch that external diameter is slightly larger than inner diameter, flexible pipe after being with the end reaming on the above-mentioned interface position that is provided with annular latch, and outside the two, be with the collar that compresses the two connection, therefore, external force is slided when passing collar, the flexible pipe compressive deformation, thereby the annular snap tooth pressure is gone in the internal surface of flexible pipe, flexible pipe is in collar and annular latch like this, outer effect down, it is securely fixed in the interface position, so its good sealing effect, coupling mechanism force is strong, is connected firmly, can satisfy the requirement of people, thereby be adapted at applying in the flexible pipe connection hose union.

Description of drawings

Fig. 1 is the utility model first embodiment's assembly structure schematic representation;

Fig. 2 is the Spring Clip schematic representation among Fig. 1;

The structural representation of the reamer that Fig. 3 is adopted for assembling first embodiment;

Fig. 4 is the user mode schematic representation of reamer;

The structural representation of the clamp that Fig. 5 is adopted for assembling first embodiment;

Fig. 6 is that A among Fig. 5 is to schematic representation;

Fig. 7 is the utility model second embodiment's assembly structure schematic representation.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, quick coupling 1 among first embodiment comprises straight-through connecting tube body 11 and two interface positions 12 that are positioned on the connecting tube body 11, be equipped with external diameter on the outer surface at described two interface positions 12 and be slightly larger than within the flexible pipe 2 to be connected four annular latches 13 in footpath, outside the connecting tube body 11 of each interface position 12 root, respectively be provided with and connecting tube body 11 all-in-one-piece locating flanges 14, on above-mentioned interface position 12, respectively be with above-mentioned flexible pipe 2, and outside the two, be with the collar 3 that compresses the two connection, slide outside flexible pipe 2 for the ease of this collar 3, be provided with inner conical surface 31 at its two ends.

During installation, collar 3 is inserted in an end of flexible pipe 2, expand the internal diameter of flexible pipes 2 with reamer 4 as shown in Figure 3, its user mode as shown in Figure 4, flexible pipe 2 is enclosed within on two semi circular surfaces 41 of reamer 4, compress reamer handle 42, two semi circular surfaces 41 are opened outwardly, at this moment, flexible pipe 2 internal diameters increase because of the reaming distortion, then it is inserted on the interface position 12 that has annular latch 13, be positioned at a side of flange 14 with the fixed card slot 51 in the clamp 5 as shown in Figure 5, the movable draw-in groove 52 of clamp 5 is stuck on the exterior edge face of collar 3, rotate counterclockwise clamp handle 56 then, because clamp handle 56 is the engagement driving of ratchet 55 and gear 54 with gear 54 cooperation places, gear 54 again with tooth bar 53 engagement of movable draw-in groove 52 downsides, thereby the rotation by clamp handle 56, can make ratchet 55 promote gear 54 transmissions, again by the effect of gear 54 with tooth bar 53, movable draw-in groove 52 pulling collars 3 are moved horizontally to fixed card slot 51 sides, shown in Fig. 6 arrow, thereby the collars 3 that are placed in outside the flexible pipe 2 are slided move to flange 14 end faces, in collar 3 moving process, flexible pipe 2 compressive deformations, four annular latches 13 at interface position 12 are pressed in flexible pipe 2 internal surfaces, realize that flexible pipe 2 internal surfaces contact with the tight of annular latch 13, to reach the purpose that is connected firmly.

Second embodiment as shown in Figure 7, itself and first embodiment's difference are that pipe joint makes elbow structure, and outside thread is made at an interface position wherein, so that the interconnecting of flexible pipe and metal tube, to be fit to different fields of employment.

Claims

1, a kind of quick coupling that is used to connect flexible pipe, it comprises connecting tube body and at least two interface positions that are positioned on the connecting tube body, have at least its outer surface to be provided with the annular latch that external diameter is slightly larger than footpath within the flexible pipe to be connected in the described interface position, be enclosed within after the end reaming of flexible pipe to be connected outside this interface position, it is characterized in that, also include collar, tightly be enclosed within outside the end of described flexible pipe to be connected.

2, the quick coupling that is used to connect flexible pipe according to claim 1 is characterized in that described collar two ends are provided with the inner conical surface of being convenient to slide and compressing.

3, the quick coupling that is used to connect flexible pipe according to claim 1 and 2 is characterized in that described connecting tube body is provided with at least one positioning convex.

4, the quick coupling that is used to connect flexible pipe according to claim 3 is characterized in that described positioning convex is a flange.

5, the quick coupling that is used to connect flexible pipe according to claim 1 and 2 is characterized in that described annular latch is 2～4.

6, the quick coupling that is used to connect flexible pipe according to claim 1 and 2 is characterized in that having at least one to make outside thread or internal thread in the described interface position.

7, the quick coupling that is used to connect flexible pipe according to claim 1 and 2 is characterized in that described pipe joint body makes straight-through or threeway or four-way or elbow structure.