CN203549175U - Inserted connection type liquid pipeline connection pipe - Google Patents

Abstract

The utility model provides a plug-in liquid pipeline connection pipe, which comprises a metal support pipe and a vulcanized rubber layer located outside the metal support pipe. The metal support pipe ensures that the entire connection pipe has sufficient rigidity. Through vulcanization molding, it is ensured that the vulcanized rubber layer is not easy to fall off during use. The two ends of the outer surface of the vulcanized rubber layer are respectively provided with a ring of rubber lips, and the inner surface of the liquid delivery pipe connected to the two ends of the vulcanized rubber layer is provided with a positioning lip matching the shape of the rubber lip. The rubber lip and the positioning lip are Interference fit, this connection structure can also prevent the connecting pipe from falling out under the premise of ensuring the sealing performance. liquid phenomenon. When connecting and installing, the two ends of the connecting pipe are respectively inserted into the liquid conveying pipes to be connected. The structure is simple and the installation is convenient.

Description

A plug-in liquid pipeline connection pipe

technical field

The utility model relates to a plug-in liquid pipeline connection pipe, which belongs to the technical field of heavy vehicles and is used for connecting the liquid pipelines of heavy vehicle engines.

Background technique

At present, when metal liquid delivery pipes such as engine coolant pipelines and lubricating oil pipelines are connected, rubber hoses are generally used for connection, and rubber hoses and liquid delivery pipes are installed and fixed by clamps. After adopting this connection structure, its connection and installation are relatively complicated. At the same time, due to the possible uneven clamp force and easy loosening, there will be a situation where the seal between the rubber hose and the liquid delivery pipe is not tight, thus cause engine fluid leakage. In addition, the rubber hose is also prone to tearing at the clamp, which will also lead to the phenomenon of engine fluid leakage. The use of heavy-duty vehicles will bring certain safety hazards and economic losses. This is one of the shortcomings of the existing technology. place.

Utility model content

The technical problem to be solved by the utility model is to provide a plug-in liquid pipeline connecting pipe that is easy to install and has good connection and sealing performance in view of the deficiencies in the prior art.

This solution is achieved through the following technical measures: the plug-in liquid pipeline connection pipe includes a metal support tube and a vulcanized rubber layer located outside the metal support tube, the metal support tube and the vulcanized rubber layer are formed by vulcanization, and the outer surface of the vulcanized rubber layer A rubber lip is provided at both ends of the vulcanized rubber layer, and a positioning lip matching the shape of the rubber lip is provided on the inner side of the liquid delivery pipe connected to the two ends of the vulcanized rubber layer. The rubber lip and the positioning lip are an interference fit.

The above-mentioned rubber lip and vulcanized rubber layer are vulcanized integral molding structure, which has good overall performance, and the rubber lip is not easy to fall off during use, so as to ensure the sealing performance of the connecting pipe.

In order to ensure the support strength, the above-mentioned metal support pipe is preferably a steel pipe made of No. 15, No. 20 or Q235 low carbon steel.

The vulcanized rubber layer can be flexibly selected according to the type of liquid to be transported and the working environment. Specifically, if the vulcanized rubber layer is connected to the oil circuit, the rubber layer made of fluorine rubber is used for the above vulcanized rubber layer; The rubber layer made of ethylene propylene rubber material shortens the product development cycle and reduces the development cost.

The beneficial effects of this solution can be known from the description of the above-mentioned solution. In the plug-in liquid pipeline connection pipe, the metal support pipe is used to ensure that the connection pipe has sufficient rigidity as a whole. The metal support pipe and the vulcanized rubber layer are formed by vulcanization to ensure The vulcanized rubber layer is not easy to fall off during use. The two ends of the outer surface of the vulcanized rubber layer are respectively provided with a ring of rubber lips, and the inner surface of the liquid delivery pipe connected to the two ends of the vulcanized rubber layer is provided with a positioning lip matching the shape of the rubber lip. The rubber lip and the positioning lip are Interference fit, this connection structure can also prevent the connecting pipe from falling out under the premise of ensuring the sealing performance. liquid phenomenon. In addition, when connecting and installing, it only needs to insert the two ends of the connecting pipe into the liquid conveying pipes to be connected. The structure is simple and the installation is convenient. It can be seen that, compared with the prior art, the utility model has substantive features and progress, and the beneficial effects of its implementation are also obvious.

Description of drawings

Fig. 1 is a schematic structural view of a specific embodiment of the present invention.

Fig. 2 is a schematic diagram of a partial structure of a liquid delivery pipe connected to a plug-in liquid pipeline connection pipe in the present invention.

In the figure, 1-rubber lip, 2-metal support pipe, 3-vulcanized rubber layer, 4-positioning lip, 5-liquid delivery pipe.

Detailed ways

In order to clearly illustrate the technical characteristics of this solution, the following will describe this solution through specific implementation modes and in conjunction with the accompanying drawings.

A plug-in liquid pipeline connection pipe, as shown in the figure, it includes a metal support pipe 2 and a vulcanized rubber layer 3 on the outside of the metal support pipe 2, and the metal support pipe 2 is preferably No. 15, No. 20 or Q235 low carbon steel material The steel pipe made by machining, the metal support pipe 2 and the vulcanized rubber layer 3 are processed into a composite structure through a vulcanization molding process. Two ends of the outer surface of the vulcanized rubber layer 3 are provided with a ring of rubber lips 1 respectively, and the rubber lips 1 and the vulcanized rubber layer 3 are vulcanized integrally formed structures. The inner surface of the liquid delivery pipe 5 connected to both ends of the vulcanized rubber layer 3 is provided with a positioning lip 4 matching the shape of the rubber lip 1, and the rubber lip 1 and the positioning lip 4 are interference fit.

The vulcanized rubber layer 3 can be flexibly selected according to the type of liquid to be transported and the different working environments. Specifically, if the connecting pipe is used to connect the oil circuit, the vulcanized rubber layer 3 is preferably a rubber layer made of fluororubber material. If the connecting pipe is used When connecting the waterway, the vulcanized rubber layer 3 is preferably a rubber layer made of EPDM material.

When assembling, the two ends of the connecting pipe are respectively inserted into the liquid conveying pipe 5 to be connected, and the rubber lip 1 and the positioning lip 4 on the inner surface of the liquid conveying pipe 5 have an interference fit to achieve the purpose of sealing without causing the The connecting pipe is separated from the liquid delivery pipe 5 . The metal support pipe 2 provides enough rigid support for the vulcanized rubber layer 3 to ensure the connection stability of the connecting pipe. The connecting pipe can adjust its own length and diameter according to the structure of the liquid conveying pipe 5 connected to it, so as to adapt to the different needs of the liquid conveying pipe 5 .

The technical features not described in the utility model can be realized by or adopting the prior art, and will not be repeated here. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above-mentioned embodiment. Changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present utility model shall also belong to the protection scope of the present utility model.

Claims (5)

1. A plug-in liquid pipeline connection pipe is characterized in that: it includes a metal support tube and a vulcanized rubber layer positioned at the outside of the metal support tube, the metal support tube and the vulcanized rubber layer are formed by vulcanization, and the two sides of the vulcanized rubber layer outside A ring of rubber lips is provided at each end of the vulcanized rubber layer, and a positioning lip matching the shape of the rubber lip is provided on the inner surface of the liquid delivery pipe connected to the two ends of the vulcanized rubber layer. The rubber lip and the positioning lip are an interference fit. 2. The plug-in liquid pipeline connection pipe according to claim 1, characterized in that: the rubber lip and the vulcanized rubber layer are vulcanized integrally formed structures. 3. The plug-in liquid pipeline connection pipe according to claim 1 or 2, characterized in that: the metal support pipe is a steel pipe made of No. 15, No. 20 or Q235 low carbon steel. 4. The plug-in liquid pipeline connection pipe according to claim 1 or 2, characterized in that: the vulcanized rubber layer is a rubber layer made of fluororubber material. 5. The plug-in liquid pipeline connection pipe according to claim 1 or 2, characterized in that: the vulcanized rubber layer is a rubber layer made of EPDM rubber.

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