CN2320873Y

CN2320873Y - Pipe joint

Info

Publication number: CN2320873Y
Application number: CN 98226189
Authority: CN
Inventors: 韩建国
Original assignee: SANLI SPECIAL STEEL PRODUCTS CO Ltd JIANGYIN CITY
Current assignee: SANLI SPECIAL STEEL PRODUCTS CO Ltd JIANGYIN CITY
Priority date: 1998-03-11
Filing date: 1998-03-11
Publication date: 1999-05-26
Anticipated expiration: 2008-03-11

Abstract

The utility model relates to a pipe joint, which belongs to the pipe connector and is composed of a pipe joint body 1, a clamping and going-though sleeve 3, a gland nut 4 and a sealing ring 2. The utility model is characterized in that one end of the clamping and going-though sleeve 3 is led into a cylindrical surface in an inner hole of the pipe joint body 1 and contacted with the sealing ring 2, and the other end of the clamping and going-though sleeve 3 is obvolvent on the outer wall of a connected pipe 5; the inner wall the end of the clamping and going-though sleeve 3 which is obvolvent on the pipe is provided with an inwards convex clamping ring, and the outer wall of the clamping and going-though sleeve 3 is provided with a male cone. The utility model has the advantages that the sealing performance is good; the connecting rigidity is high; the work is stable and reliable; the utility model can be used for the interfaces of all parts which have interfaces with the pipe in a pipeline system.

Description

The cartoon type pipe joint

The utility model relates to a kind of pipe joint, specifically a kind of pipe joint.Be applicable to caliber Φ 10-60mm, nominal pressure≤400 crust, medium is the pipe-line system of water, oil, pressurized air, coal gas, steam and general corrosion medium.

The key of pipe joint is to solve the rigidity be tightly connected, locking and be convenient to mounting or dismounting.A kind of pipe joint commonly used at present is the form that is threaded that adopts the raw meal belt sealing.Its major defect is: raw meal belt easily enters inner cavity of pipe, seal reliable and stable inadequately, during connection pipe axial displacement big, require highly though connect the good part coaxality of rigidity, anti-loosing effect is poor, is unfavorable for installing and removing.

The purpose of this utility model is to provide a kind of sealability better, and pipe does not have axial displacement during connection, connects good rigidly, and lower to the coaxality requirement, anti-loosing effect is good, is beneficial to the pipe joint of mounting or dismounting.

The utility model is achieved in that a kind of cartoon type pipe joint, comprise the gland nut on union body and the union body, be characterized in that union body and connected tube are with being provided with cartoon cover and seal ring, the endoporus that cartoon is overlapped end feeding fittings body contacts with seal ring, and the other end obvolvent is on the outer wall of connected tube.

Cartoon cover of the present utility model can be made two kinds of forms, and a kind of is the snap ring that an end inwall is shaped on convex, and outer wall is made male cone (strobilus masculinus), and the other end is made the plane.Screw two stages of nut time-division, phase I nut inner conical surface contacts the axial force that produces with cartoon cover male cone (strobilus masculinus) makes the cartoon tubular axis to compressing seal ring, when cartoon pipe outer wall with continue to screw nut after fittings body contacts, the radial force that conical surface contact produces makes cartoon overlap an end generation plastic deformation, and the snap ring of cartoon cover convex is just tightly embraced pipe.

The another kind of form of cartoon cover is the conical ring of opening, and its endoporus has several places shallow slot and helps obvolvent to pipe, and outer wall is made the conical surface, clamp-ons at the tapered collar opening for preventing seal ring, should increase between conical ring and seal ring and put a trim ring.

Advantage of the present utility model: adopted the top-quality rubber sealing material, good sealing effect, reliable and stable.Guaranteeing on the structural design has certain extruding force to seal ring.The cartoon cover is owing to be subjected to male cone (strobilus masculinus) radial force effect generation plastic deformation, and resistance of deformation is big, and the cartoon cover is big to the pipe cohesive force, connects good rigidly, and nut anti-looseness is effective.Because the snap ring of convex is narrow to the obvolvent band of pipe, lower to the coaxality requirement of connected piece, axial displacement does not take place in the pipe and joints body during installation simultaneously, is used with joint and is convenient to mounting or dismounting.

Fig. 1 is a general structure schematic representation of the present utility model.

Fig. 2 is a kind of structural representation of cartoon cover.

Fig. 3 is the another kind of structural representation of cartoon cover.

Fig. 4 is an another kind of structural representation of the present utility model.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is a kind of structural type of the present utility model, and by union body 1, the gland nut 4 on the fittings body is arranged on 5 rubber seal rings that seal 2 of union body 1 and connected tube and cartoon cover 3 and forms.Cartoon is overlapped on the interior circular hole that 3 one ends are plane access tube fittings body 2, seal ring 2 is played quantitative extrusion effect, the other end inwall is shaped on convex snap ring 8, it is 50 °-70 ° wedge angle projection that the convex snap ring can be made little fillet or angle β, it is 40 °-50 ° male cone (strobilus masculinus) 9 that outer wall is made axial angle α, see Fig. 2, during the nut pretension at first the axial thrust load of cartoon cover male cone (strobilus masculinus) make axially quantitative mobile crush seal ring of cartoon cover, then cartoon is overlapped an end generation plastic deformation under the radial component effect, and its convex snap ring is tightly embraced pipe.

Fig. 3 is that the another kind of structural type of cartoon cover is the tapered collar of opening, cone angle γ is 60 °-90 °, opening 11 was progressively closed when difference was the tight pipe of opening conical ring cartoon cover obvolvent, resiliently deformable only takes place, for avoiding rubber seal ring 2 to clamp-on, increase between cone and seal ring and put a trim ring 10 at opening.

Fig. 4 is an another kind of structural type of the present utility model, and a kind of union of promptly making has been characterized in that one connects cover and 6 is connected on pipe joint 1 one ends, and its endoporus contacts with seal ring 2.Cylindrical contacts with cylinder in the nut 4.Seal ring 2 inwalls and connected tube connector engages portion are embedded with an eyelet 7.Adapter need only be shifted out during mounting or dismounting, take out seal ring and can take off pipe.

The utility model can be applied in the interface of all parts (various forms of fittings bodies, valve, basin etc.) of pipe-line system and pipe joint.

Claims

1. cartoon type pipe joint, comprise the gland nut (4) on union body (1), the union body, it is characterized in that being provided with between union body (1) and the connected tube (5) cartoon (3) and seal ring (2), the endoporus that cartoon cover (3) one ends feed fittings body (1) contacts with seal ring (2), and the other end obvolvent is on the outer wall of connected tube (5).

2. a kind of cartoon type pipe joint according to claim 1 is characterized in that being shaped on cartoon cover (3) the one end inwalls snap ring (8) of convex, and outer wall is shaped on male cone (strobilus masculinus) (9).

3. a kind of cartoon type pipe joint according to claim 1 is characterized in that cartoon cover (3) can be made into the conical ring of opening (11), and endoporus is cylindrical and has several places shallow slot, between opening conical ring (3) and seal ring (2) trim ring (10) is installed.

4. a kind of cartoon type pipe joint according to claim 2, the snap ring (8) that it is characterized in that cartoon cover (3) convex is a wedge angle projection, its card angle β is 50 °-70 °.

5. a kind of cartoon type pipe joint according to claim 2, the snap ring (8) that it is characterized in that cartoon cover (3) convex is a fillet projection.

6. according to claim 2 or 4 or 5 described a kind of cartoon type pipe joints, it is characterized in that its axial angle of male cone (strobilus masculinus) (9) α of cartoon cover (3) is 40 °-50 °.

7. a kind of cartoon type pipe joint according to claim 6 is characterized in that having one to connect cover (6) and be connected to fittings body (1) one end, and its endoporus contacts with seal ring (2), and cylindrical contacts with nut (4) inner hole surface.

8. a kind of cartoon type union according to claim 7 is characterized in that seal ring (2) inwall and connected tube connector engages portion are embedded with an eyelet (7).

9. a kind of cartoon type pipe joint according to claim 3 is characterized in that cartoon cover (3) cone angle γ is 60 °-90 °.