CN201636461U - pipe connector - Google Patents

Abstract

The utility model relates to a pipe connector, wherein a rubber ring is sheathed in a metal shell; the two ends of the rubber ring are provided with sealing lips; and the sealing lips are of the double-lip structure. The pipe connector has simple and reasonable structure, the double-lip structure of the sealing lips of the sealing rubber rings can provide the double security guarantees for pipe connection, thereby ensuring the best sealing property of a pipe under low/high working pressure; when a bolt of the pipe connector is screwed tightly, whether the pipe works under the vacuum negative pressure or the high pressure, the opening between the two lips forms buffering, and the inner lip is overlapped on the outer lip, so that the flanging of the sealing lips can not be caused, and the sealing effect is best; when the pressure in a pipeline is risen, the tighter the compaction of the sealing lips is, and the better the sealing effect is. In addition, a metal protection gasket is additionally arranged in the sealing rubber ring, thereby effectively preventing the axial dislocation of the pipe connection and avoiding the damage to the sealing rubber ring caused by the dislocation of the pipe connection and cutting, so as to ensure the sealing effect, enhance the connection reliability and prolong the service life.

Description

pipe connector

technical field

The utility model relates to a pipeline connection device.

Background technique

The pipeline connection device is an important device in the pipeline connection of various industries, especially some pipeline connection devices that have strict requirements on sealing and pipeline error compensation. The quality of its structure and performance directly affects the application effect of the pipeline. At present, flanges and pipe connectors are generally used for straight pipe connections. Flanges are a rigid connection, and the application effect in pressure pipes is not as good as that of pipe connectors. The metal shell of pipe connectors has a rubber sealing ring, and the sealing effect is excellent. Disassembly and assembly are worse than flanges, but there are also substantial shortcomings. First, the sealing lip of the sealing ring adopts a single-lip structure. When the working pressure is low, the sealing effect can be guaranteed, but when the pipeline is under vacuum Under the condition of negative pressure or high pressure, the lip edge of the sealing lip will turn up under the relative external pulling force of the pipeline, and the sealing effect will decrease, or even lose the sealing effect. Second, when the butted pipe ends in the pipe connector are axially misaligned, it is easy to cause the pipe to shear and damage the rubber sealing layer, which affects the sealing effect.

Contents of the invention

The purpose of the utility model is to overcome the problem of insufficient sealing performance of the current pipeline connector, and provide a pipeline connector with simple structure, good sealing effect, long service life, safety and reliability.

The technical solution adopted by the utility model to achieve the above purpose is: a pipe connector, a metal shell lined with a rubber ring, and a sealing lip at both ends of the rubber ring, and the sealing lip is a double-lip structure.

The sealing lip is a double-lip structure with a cut between the inner lip and the outer lip, and the cut is straight or arc-shaped.

A metal protective liner is installed in the sealing ring between the sealing lips at both ends.

The metal protective liner is a stainless steel protective liner formed by crimping a stainless steel strip.

The utility model has a simple and reasonable structure. The sealing lip of the rubber sealing ring adopts a double-lip structure design, which provides double safety guarantees for the sealing of the pipeline connection and ensures the best sealing effect of the pipeline under low (high) working pressure. When the pipeline connector is tightened When bolting, no matter the pipeline works under vacuum negative pressure or high pressure, the opening between the two lips forms a buffer, and the inner lip overlaps the outer lip, which will not cause the sealing lip to flang, and the sealing effect is better. Special double-lip sealing lip design, when the internal pressure of the pipeline rises, the tighter the sealing lip is compacted, the better the sealing effect.

In addition, the rubber sealing ring of the utility model is equipped with a metal protective liner, which can effectively prevent the axial dislocation of the pipe connection, and avoid damage to the rubber sealing ring caused by pipe dislocation and shearing. Ensure the sealing effect, increase the reliability of the connection and prolong the service life.

Description of drawings:

Fig. 1 is a schematic structural diagram of a traditional pipeline connector.

Fig. 2 is a structural schematic diagram of the utility model.

Fig. 3 is a structural schematic diagram of the utility model under high-voltage working conditions.

Fig. 4 is a partially enlarged view of the double lips of the utility model.

Fig. 5 is a structural schematic diagram of the utility model with a metal protective layer.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is described in further detail, but the utility model is not limited to specific embodiment.

Example 1

The pipe connector shown in Figure 3 and 4, the metal shell 1 is lined with a rubber ring 2, and the rubber ring has sealing lips at both ends, and the sealing lip is a double-lip structure with a cut 5 between the inner lip 3 and the outer lip 4 , The incision 5 is linear or arc-shaped.

Example 2

In the pipe connector shown in Figure 5, the metal shell 1 is lined with a rubber ring 2, and the rubber ring 2 has a sealing lip at both ends, and the sealing lip is a double-lip structure with a cutout 5 between the inner lip 3 and the outer lip 4, The incision 5 is linear or arc-shaped, and a metal protection liner 6 is added in the sealing ring between the sealing lips at both ends, and the metal protection liner is formed by curling a stainless steel strip.

Claims (4)

1. Pipeline connector, rubber ring inside the metal shell, with sealing lips at both ends of the rubber ring, the feature is: the sealing lip is a double-lip structure. 2. The pipe connector according to claim 1, wherein the sealing lip is a double-lip structure with a cut between the inner lip and the outer lip, and the cut is straight or arc-shaped. 3. The pipe connector according to claim 1 or 2, characterized in that: a metal protective gasket is added in the sealing ring between the sealing lips at both ends. 4. The pipe connector according to claim 3, characterized in that: the metal protective gasket is made of stainless steel protective gasket.

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