CN201306543Y

CN201306543Y - Seal ring

Info

Publication number: CN201306543Y
Application number: CNU2008201676331U
Authority: CN
Inventors: 王志潮; 汪明华
Original assignee: Ningbo Weimeng Shengfei Agricultural Machinery Co Ltd
Current assignee: Ningbo Weimeng Shengfei Agricultural Machinery Co Ltd
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-09-09
Anticipated expiration: 2018-11-07

Abstract

The utility model relates to a seal ring. The seal ring is characterized in that the seal ring comprises an L-shaped annular loop made of antifriction rubber. In the seal ring, self pressure of a water pipe is utilized to ensure that the inner wall and the outer wall of the seal ring are in tight contact with the pipe wall, so as to achieve better sealing effect; the material is saved and the manufacture cost is low; the adopted material is antifriction rubber which has certain expansion rate, so that the damaged part is automatically compensated, and the service life is long.

Description

A kind of seal ring

Technical field

The utility model relates to the water pipe seal ring, specifically refers to be used for the last waterstop ring that electronic circle moves irrigation sprinkler.

Background technique

It is that the indispensable large-scale agricultural machinery of water-saving irrigation is carried out to crops in the arid area that electronic circle moves irrigation sprinkler, and this equipment is made up of center pivot, water pipe truss, span tower carriage, cantilever, automatically controlled synchro system usually.Its structure and working principle are: center pivot is installed in the central position of being irrigateed land, and the head end that head strides the water pipe truss is installed in the top of center pivot, and its tail end and back one are striden the water pipe truss and be connected and be supported on the span tower carriage; Whenever stride the motor that drives the span tower carriage walking all is installed on the span tower carriage, described motor is controlled by automatically controlled synchro system, and making and striding whenever that the water pipe truss remains under the same straight line situation, with the center pivot is that move in the center of circle.The arm and the shower nozzle that hang down are installed down on the water pipe truss.It is big that this electronic circle moves the irrigation sprinkler irrigated area, low cost of manufacture.Because this irrigation sprinkler moves along the center pivot circumference,, like this, just there is the problem of a sealing between the water inlet of center pivot and the swivel elbow so be to be connected between the water inlet of center pivot and the water pipe truss by a bend pipe that can rotate.Common at present use " V " shape seal ring guarantees the sealing between water inlet and the swivel elbow, but the working life of this seal ring is short, uses usually the water leakage phenomenon of wearing and tearing will occur in, and its manufacture cost is also higher comparatively speaking.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, and the seal ring of a kind of good seal performance, long service life and low cost of manufacture is provided.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: the sealing circle is characterized in that: comprise " " shape annular collar of being made by abrasive rubber.The sealing circle utilizes self pressure in the conduit pipe, makes inside and outside wall of seal ring and tube wall paste closelyr, and its sealability is better; Materials are saved, low cost of manufacture, and because employed material is an abrasive rubber, and it has certain stretching rate, branch compensates automatically to wear, long service life.

Described annular collar comprises integrated inner ring and outer ring, and the height of described inner ring is greater than the height of described outer ring.

Preferably, described inner ring is the taper type that thickness increases gradually, and the cross section of described outer ring is an arc.Like this, the shape shrinkage of inner ring is little, is applied on the swivel elbow, and is with the friction factor of swivel elbow, not easy to wear; Semicircle outer ring then is close in " R " of center pivot water inlet inwall, good sealing effect.

Compared with prior art, because the utility model has adopted " " shape seal ring, materials are saved, low cost of manufacture; Can utilize self pressure in the conduit pipe, make inside and outside wall of seal ring and tube wall paste closelyr, its sealability is better; And because employed material is an abrasive rubber, it has certain stretching rate, and branch compensates automatically to wear, good seal performance, long service life.

Description of drawings

Fig. 1 is the utility model embodiment's a perspective view;

Fig. 2 is along the sectional view of A-A line among Fig. 1;

Fig. 3 is applied to the sectional view in the last water short tube in the irrigation sprinkler for the utility model embodiment.

Embodiment

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

As 1 to shown in Figure 2, sealing circle 1 is " " shape, adopts nitrile butadiene rubber one-body molded, and it comprises that the cross section is that semicircular outer ring 2 and cross section are the inner ring 3 of shape fond of gossip.

As shown in Figure 3, sealing circle 1 is applied between the water inlet 4 and swivel elbow 5 of irrigation sprinkler center pivot, the outer ring 2 of seal ring 1 is close in the nest groove on the inwall of water inlet 4, an end of swivel elbow 5 inserts the centre of inner ring 3.Because inner ring 3 is a thin-walled shape fond of gossip, its shrinkage is little, and the friction factor that produces with swivel elbow is little; Simultaneously owing between inner ring and the outer ring certain deformation space is arranged, so it is not easy to wear; Even under the situation of wearing and tearing, can utilize the characteristics of abrasive rubber self material, wear branch compensates automatically.Compare with existing v-ring, reach three times of common v-ring its working life.The use of sealing circle was found to leak in 3 years, but the use of conventional seals circle is just found after 1 year to leak necessary the replacing; And sealing circle low cost of manufacture, installation and maintenance are more convenient.

Claims

1, a kind of seal ring is characterized in that: comprise " " shape annular collar of being made by abrasive rubber.

2, seal ring according to claim 1 is characterized in that: described annular collar comprises integrated inner ring and outer ring, and the height of described inner ring is greater than the height of described outer ring.

3, seal ring according to claim 2 is characterized in that: described inner ring is the taper type that thickness increases gradually, and the cross section of described outer ring is an arc.