CN2250450Y

CN2250450Y - Seal ring

Info

Publication number: CN2250450Y
Application number: CN 96236012
Authority: CN
Inventors: 李银虎
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-28
Filing date: 1996-06-28
Publication date: 1997-03-26
Anticipated expiration: 2006-06-28

Abstract

The utility model relates to a seal ring. The seal ring is made from elastic rubber materials, and suitable for the seal and the connection between a male pipe and a female pipe in a water pipeline. The seal ring is an O-shaped ring. The inner wall of the seal ring is convex. The outer wall of the seal ring is concave. The bottom part of the seal ring is plane. A groove between the inner wall and the outer wall is V-shaped. In use, the seal ring is sheathed between the male pipe and the female pipe to use the pressure of liquid for sealing. The utility model has the advantages of good sealing performance and convenient installation.

Description

Seal ring

The utility model belongs to the pipe coupling technical field of sealing technology, relates in particular to a kind of seal ring that is used for water lines.

Now domesticly mainly adopt the flat rubber packing ring to seal in the pipe coupling sealing, this seal ring is difficult to reach thorough leakproof, and the sealability instability.

The purpose of this utility model is to provide a kind of seal ring of favorable sealing property.

For achieving the above object, provide technological scheme as follows: the utility model is a kind of O RunddichtringO of being made by elastic rubber material, the outer wall that is characterized in seal ring is spill, inwall is convex, the bottom is the plane, and the diameter of outer wall upper edge is greater than the external diameter of bottom, and the diameter of inwall upper edge is less than the internal diameter of bottom; Also have a groove that caves inward between inwall and the outer wall, this groove is V-shaped.

The seal ring of this structure in the connection of pipeline, is placed in female pipe, and its outer wall connects airtight with female tube wall voluntarily, and after public pipe inserted, its inwall connected airtight with public tube wall voluntarily, instantaneous the leaking when having prevented water flowing.Because the inside groove between outer wall and inwall is V-shaped, after the water flowing, under the effect of hydrodynamic pressure, be similar to semi-circularly behind the inner groove surface pressurized, make the inside and outside wall each several part stressed more even, improved sealability, the bottom is the advantage that the flat rubber packing ring has been taken into account on the plane.

Embodiment is described in further detail the application below in conjunction with accompanying drawing.

Fig. 1 is the plan structure schematic representation of seal ring.

Fig. 2 is the structural representation of looking up of sealed picture.

Fig. 3 is along A-A line sectional structure schematic representation among Fig. 1.

Sealing circle shown in Fig. 1, Fig. 2 is an O RunddichtringO, it is made up of outer wall 1, inwall 2, bottom 3, Fig. 3 expresses its internal structure, its outer wall 1 is spill, and inwall 2 is convex, and bottom 3 is plane structures, the groove 4 that between outer wall 1 and inwall 2, caves inward in addition, groove 4 is V-shaped, and the diameter of the upper edge 5 of outer wall 1 is greater than the external diameter of bottom 3, and the diameter of the upper edge 6 of inwall 2 is less than the internal diameter of bottom 3.

In the connection of pipeline, because the requirement on cooperating, the diameter of seal ring outer wall upper edge is larger than female pipe (extra heavy pipe) internal diameter, the diameter outline of inwall upper edge is less than the external diameter of public affairs pipe (tubule), the external diameter of bottom equates that with female bore the internal diameter of bottom equates with public external diameter of pipe, has so just guaranteed that seal ring outer wall and female tube wall connect airtight, connecting airtight of seal ring inwall and public tube wall, instantaneous the leaking when having prevented water flowing; Water is exerted pressure to V-shaped groove along the direction of arrow shown in Figure 3 after the water flowing, and under the effect of pressure, the inside and outside wall each several part of seal ring is stressed evenly, will manage with public affairs, female pipe sticks together more closely, improved sealability.In addition, installation is also very convenient.Through using in the connecting pipeline of irrigation sprinkler, water leakage phenomenon does not take place in whole sprinkling irrigation process all the time, and using effect is very good.

Claims

1, seal ring is the O-ring seals of being made by rubber material, it is characterized in that the outer wall of sealing circle is spill, and inwall is convex, and the bottom is the plane.

2, seal ring as claimed in claim 1 is characterized in that the external diameter of the diameter of outer wall upper edge greater than the bottom, and the diameter of inwall upper edge is less than the internal diameter of bottom.

3, as claim 1,2 described seal rings, it is characterized in that having between inwall and the outer wall groove of a depression, this groove is V-shaped.