CN2080608U

CN2080608U - Joint arrangement

Info

Publication number: CN2080608U
Application number: CN 91200553
Authority: CN
Inventors: 朱永楣; 陈孔崇
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-15
Filing date: 1991-01-15
Publication date: 1991-07-10

Abstract

The utility model relates to a joint device which relates to a joint body or a pipe joint on a valve. The utility model is composed of a joint body, a joint screw cap, an elastic sealing ring and a wedge sleeve, and the utility model can also comprises an elastic clipping liner, wherein, the excircle of the joint body is provided with a section of outer screw treads which are connected with inner screw treads of the joint screw cap in a matching mode; the joint body is provided with a step inner hole cavity, and the elastic sealing ring and the wedge sleeve which are arranged in the hole cavity are provided with corresponding inclined planes; the joint screw cap is screwed tightly, the joint screw cap itself bunts and presses the wedge sleeve, or the joint screw cap bunts and presses the wedge sleeve by an elastic clip, and then, the elastic sealing ring is squeezed, and thereby, the purpose of sealing connection is achieved. The joint device can be made into the valve or the pipe joint which has the advantages of easy assembly and disassemby, and simple structure. The utility model has the advantage of good sealing performance.

Description

Joint arrangement

The utility model relates to the overhanging joint of valve or the overhanging joint of pipe joint.

Using at present is Bite type fittings comparatively widely, this joint, there is following shortcoming, the one, because the external diameter error of homemade pipe is bigger, after cutting ferrule is tightened the phenomenon of unclamping is arranged, the 2nd, the back is installed as need takes apart, cutting edge flexible type and damage in the cutting ferrule, another kind of widely used is to adopt to be threaded, the pipe outer ring need process screw thread during use, the processing effort, inconvenience is not suitable for moulding and installs, and need twine flax silk or tetrafluoro raw meal belt, loading and unloading are inconvenient, and joint damages easily, has a strong impact on construction speed.For the overhanging joint of valve, generally adopt flange to link, need precise design to calculate tube length, loading and unloading are inconvenient.

The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of easy to loading and unloading, the piecing devices of good seal performance.

The utility model comprises fittings body, collar nut, elastic seal ring, cover of wedge is formed, and is shaped on the screw-internal thread fit of one section outside thread and collar nut on the outer garden of fittings body, is shaped on the inner bore of step chamber on the fittings body, elastic seal ring and cover of wedge are housed in the vestibule, elastic seal ring is the sleeve pipe with outer cone cylinder, and cover of wedge is the sleeve pipe with the inner conical surface that cooperates with the male cone (strobilus masculinus) of elastic seal ring, and collar nut withstands on an end of cover of wedge.

Piecing devices of the present utility model are simple in structure, have only on two parts and have the conical surface, easily manufactured, sealing is reliable, its outstanding advantage be load and unload very convenient, applicable to valve and common tube joint, the processing of the fittings body of two or three the utility model piecing devices can form a good seal performance, two logical or three-way unions easy to loading and unloading on one, the projecting tube of valve is made the fittings body form of the utility model piecing devices, can directly link easily with non-flanged pipe.The utility model is particularly suitable for moulding and installs for the installation conditions that improves present pipe connection contributes, and has vast potential for future development.

For introducing the utility model in detail, be described in detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of embodiment's of a piecing devices of the present utility model sectional structure schematic representation;

Fig. 2 is an another kind of embodiment's of the present utility model sectional structure schematic representation;

Fig. 3 is the structure diagram with three-way union of piecing devices.

With reference to Fig. 1, piecing devices of the present utility model are by fittings body 1, collar nut 5, elastic seal ring 2, cover of wedge 3 is formed, be shaped on the screw-internal thread fit of one section outside thread and collar nut 5 on the outer garden of fittings body 1, be shaped on the inner bore of step chamber on the fittings body 1, elastic seal ring 2 and cover of wedge 3 are housed in the vestibule, elastic seal ring 2 is for having the sleeve pipe of outer cone cylinder, cover of wedge 3 is for having the sleeve pipe of the inner conical surface that cooperates with the male cone (strobilus masculinus) of elastic seal ring 2, and collar nut 5 withstands on an end of cover of wedge 3.

With reference to Fig. 2, can have spill awl chamber 51 on the collar nut 5, in adorn an elastic clip courage 4, elastic clip courage 4 has and bores the conical surface that matches in the chamber, an end of elastic clip courage 4 withstands on an end of cover of wedge 3.The existence of elastic clip courage 4 can further promote sealing, also holds the pipe 6 that is connected tightly, increases the rigidity that connects.

With reference to Fig. 2, have at least one circular groove 43 on the inwall of elastic clip courage 4, to increase the elasticity of elastic clip courage 4, make the screwing force of less collar nut 5 can reach very high sealing effect.From three-way union shown in Figure 3, as can be seen, the loading and unloading pipe is all very convenient.

By tightening collar nut 5, collar nut 5 extruding covers of wedge 3 or by elastic clip courage 4 extruding covers of wedge 3, cover of wedge 3 and then by tilted conical surface extruding elastic seal ring 2 can be held the pipe 6 that is connected tightly, to reach the purpose that is tightly connected.

The periphery 51 of collar nut 5 is for tightening non slip surface, can adopt that the method for annular knurl creates in the prior art, and this non slip surface 51 can make the very easy pipeline that carries out of user install.

Fig. 1-2 embodiment of the present utility model has provided the structure of this piecing devices and the principle of design, when the fittings body 1 in the piecing devices is an arbitrary or whole overhanging joint in the two logical or triple valves, in other words, each joint of valve is by piecing devices manufacturing of the present utility model, can obtain a very easy novel valve that is connected with the pipeline installation, equally, this piecing devices are used for pipe joint, be that several fittings bodies 1 are made of one, can form several logical pipe joint with effect of the present utility model, Fig. 3 is exactly a three-way union of using piecing devices of the present utility model.

Claims

1, a kind of piecing devices, it is characterized in that by fittings body (1), collar nut (5), elastic seal ring (2), cover of wedge (3) is formed, be shaped on the screw-internal thread fit of one section outside thread and collar nut (5) on the outer garden of fittings body (1), fittings body is shaped on the inner bore of step chamber on (1), elastic seal ring (2) and cover of wedge (3) are housed in the vestibule, elastic seal ring (2) is for having the sleeve pipe of outer cone cylinder, cover of wedge (3) is for having the sleeve pipe of the inner conical surface that cooperates with the male cone (strobilus masculinus) of elastic seal ring (2), and collar nut 5 withstands on an end of cover of wedge (3).

2, according to the piecing devices of claim 1, it is characterized in that to have on the collar nut (5) spill awl chamber (51), in adorn an elastic clip courage (4), elastic clip courage (4) has and the conical surface that matches of awl chamber, an end of elastic clip courage (4) withstands on an end of cover of wedge (3).

3,, it is characterized in that having at least one circular groove (43) on the inwall of elastic clip courage (4) according to a kind of piecing devices of claim 2.

4, according to the piecing devices of claim 1, the periphery (51) that it is characterized in that collar nut (5) is for tightening non slip surface.

5,, it is characterized in that fittings body (1) is the arbitrary or whole overhanging joint in the two logical or triple valves, or be the arbitrary or whole overhanging joint in two logical or threeway or the union crosss according to the piecing devices of claim 1.