CN2159485Y

CN2159485Y - Self locking pipe joint

Info

Publication number: CN2159485Y
Application number: CN 93211194
Authority: CN
Inventors: 郦公凯
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-26
Filing date: 1993-04-26
Publication date: 1994-03-23
Anticipated expiration: 2003-04-26

Abstract

The utility model relates to a self locking pipe joint, comprising a female joint whose one end is provided with a conical hole which is provided with a conical bar inside. The big end of the conical bar is provided with a cushion ring and a sealing ring in sequence. A male joint which is matched with the female joint that is provided with internal screw threads on the other end is sheathed in a connecting pipe. The axial force generated by rotating the female joint fixes the connecting pipe. The utility model can be mounted and dismounted without processing the connecting pipe and has a self locking function and a self tightening function. The utility model has the advantages of simple structure and low cost, being very useful in mounting pipes with general medium and general pressure.

Description

Self locking pipe joint

The utility model relates to the device that connects with pipe box or base, and a kind of pipe that compresses seal ring with axial moving piece connects.

In some pipelines such as running water pipe, mesolow oil gas pipe, the connecting mode between the pipeline has at present: flange connects, welding connects, expand connection and screw thread connection etc.The existing problem of these several connecting modes is: inconvenience is installed and removed in connection as flange, volume is big, cost is higher; Welding connects construction inconvenience, can not dismantle; Expansion connecting process complexity; Screw thread connects relatively poor, the easy seepage of sealing.More than their common problems that exists of several connections be that construction speed is very slow, not only take a lot of work but also time-consuming, waste is very big on the man power and material.

The purpose of this utility model provides a kind of self locking self fastening type pipe that can self-locking can seal again and connects, and can remedy the problem that above-mentioned several connecting mode exists.

For achieving the above object, the technical solution of the utility model is: it comprises the negative joint, the seal ring that have internal thread, has externally threaded male connector.At one end have in the negative joint of cone shape hole circular cone is housed, packing ring, seal ring are housed on the large end face of circular cone successively, have the male connector that the negative joint of internal thread matches with the other end.Be inserted in adapter in the yin, yang joint, the rotation axial force that negative joint produced will be taken over fastening.

The utility model is compared with background technique, and the useful effect that has is:

1. do not need processing to take over partly, get final product installation or removal;

2. have self-locking self-tightening sealing function, can be used for general medium and pressure;

3. simple in structure, easy to manufacture, cost is lower;

Therefore it has good use value in piping erection.

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

Fig. 1, structural representation of the present utility model;

Fig. 2, A-A sectional drawing of the present utility model.

As shown in Figure 1, the utility model has cone shape hole by an end, the female negative joint 1 of the other end, and circular cone 2, wire circlip 3, packing ring 4, seal ring 5 is made up of externally threaded male connector 6.Insert the moon when taking over 7, before in the male connector, earlier wire circlip 3 is put into the groove of circular cone 2, be enclosed within the taper hole of negative joint 1, overlap upper gasket 4 then successively, seal ring 5, after screwing in male connector 6, overlap upper connecting tube 7 again,, can connect with the same manner mounting pipe at the other end of male connector 6 if need to connect two adapters, rotation negative joint 1 compresses circular cone 2, as shown in Figure 2, circular cone is generally formed by three, by circular cone 2 sides, packing washer 4 again, seal ring 5, making to be attached to tightly after the seal ring distortion and take over 7 tube wall, is respectively that the inclined-plane contacts with the side of packing ring 4 and male connector 6, plays self-locking self-tightening sealing effect jointly.

Claims

1, a kind of self locking self fastening type pipe connects, it comprises the negative joint, the seal ring that have internal thread, has externally threaded male connector, feature of the present utility model is: an end has in the negative joint [1] of cone shape hole circular cone [2] is housed, the male connector [6] that packing ring [4], seal ring [5] is housed on the large end face of circular cone [2] successively, matches with the female negative joint of the other end [1].

2, self-locking type pipe according to claim 1 connects, and it is characterized in that: the circular cone (2) that cooperates with the negative joint that has cone shape hole (1) is formed by three, and wire circlip (3) is housed in its groove.

3, self locking self fastening type pipe according to claim 1 connects, and it is characterized in that: seal ring (5) both sides are respectively that the inclined-plane contacts with the side of packing ring (4), male connector (6).