Pipe orifice connecting structure with good sealing performance

Abstract

The utility model belongs to the technical field of pipeline connection, and particularly discloses a pipe orifice connecting structure with good sealing performance, which comprises a lower pipeline, a first support ring is arranged in the lower pipeline, the top of the lower pipeline is fixedly connected with a lower flange plate, and the top of the lower flange plate is detachably provided with an upper pipeline through a connecting mechanism. A second supporting ring is arranged in the upper pipeline, a sealing mechanism is arranged at the joint of the upper pipeline and the lower pipeline, and the connecting mechanism comprises an upper flange plate fixedly connected to the bottom of the upper pipeline. According to the pipe orifice connecting structure with the good sealing performance, the soft rubber ring can more effectively adapt to the irregular surface of the inner wall of a pipeline through the expansion capacity of the expansion water stop strip, potential gaps and unevenness are filled, it is guaranteed that the soft rubber ring is tightly attached to the inner wall of the pipeline all the time, and the sealing ring is matched for protecting the external environment; the two sealing elements work together on the outer side and the inner side, and more reliable sealing protection is formed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipe connection, in particular to a pipe mouth connection structure with good sealing performance. BACKGROUND

[0002] Pipe mouth connection refers to a way of connecting two or more pipes, usually by a certain technology or device to connect the end or side of a pipe with other pipes or equipment, and the connection usually needs to ensure sealing to prevent fluid leakage.

[0003] In the industrial and manufacturing fields, the design of the pipe connection structure is crucial to ensure the efficient operation of the fluid transmission system. Traditional pipe connection technology usually adopts welding or flange direct connection, which may have problems such as poor sealing performance and easy leakage in some applications. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims to solve the problems in the prior art by providing a pipe mouth connection structure with good sealing performance.

[0005] To achieve the above purpose, the utility model provides a pipe mouth connection structure with good sealing performance, which comprises a lower pipe, the inside of the lower pipe is provided with a first supporting ring, the top of the lower pipe is fixedly connected with a lower flange plate, the top of the lower flange plate is detachably installed with an upper pipe through a connecting mechanism, the inside of the upper pipe is provided with a second supporting ring, and the connecting part of the upper pipe and the lower pipe is provided with a sealing mechanism.

[0006] Preferably, the connecting mechanism comprises an upper flange plate fixedly connected to the bottom of the upper pipe, a plurality of groups of screw holes are formed in the outer surface of the upper flange plate, and the number of screw holes corresponds to the number of screws.

[0007] Preferably, the inner surface of the lower flange plate is threadedly connected with a plurality of groups of screws, the outer surface of the screw is threadedly sleeved with the inner wall of the screw hole, and the outer surface of the screw is threadedly sleeved with a nut.

[0008] Preferably, the sealing mechanism comprises a sealing ring arranged between the lower flange plate and the upper flange plate, a plurality of groups of perforations are formed in the outer surface of the sealing ring, the number of perforations is the same as that of screw holes, and the perforations are in the same vertical plane.

[0009] Preferably, the top of the first supporting ring is provided with a soft rubber ring, the inside of the soft rubber ring is provided with an expansion water stop, and the soft rubber ring has a certain deformation capacity.

[0010] Preferably, the top of the soft rubber ring is provided with a rubber convex ring, and the outer surface of the rubber convex ring is fixedly sleeved with an adaptive sealing ring, and the adaptive sealing ring and the sealing ring are in the same horizontal plane and seal the connecting part of the pipeline from the inside and outside.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1、The pipe joint structure with good sealing performance, the expansion ability of the expansion waterstop enables the soft rubber ring to more effectively adapt to the irregular surface of the inner wall of the pipeline, fills potential gaps and unevenness, and ensures that the soft rubber ring always closely fits the inner wall of the pipeline, cooperates with the protection of the sealing ring on the external environment, and the two sealing elements work together on the outside and the inside, forming more reliable sealing protection.

[0013] 2、The pipe joint structure with good sealing performance, the screw needs to pass through the screw hole on the surface of the sealing ring after passing through the perforation on the surface of the sealing ring, so that the screw is fastened by cooperating with the nut, at this time, the upper and lower flanges are indirectly fixed together with the upper and lower two groups of pipelines, and the sealing ring is between the connecting parts, which improves the connection stability and increases the sealing performance of the connecting part. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the application;

[0015] Figure 2 It is a schematic diagram of the upper and lower pipeline connection structure of the application;

[0016] Figure 3 It is a schematic diagram of the rubber ring structure of the application;

[0017] Figure 4 It is a schematic diagram of the internal structure of the pipeline of the application.

[0018] Wherein: 1, lower pipeline; 2, first supporting ring; 3, lower flange; 4, upper pipeline; 5, upper flange; 6, screw hole; 7, screw; 8, nut; 9, second supporting ring; 10, sealing ring; 11, perforation; 12, soft rubber ring; 13, expansion waterstop; 14, rubber convex ring; 15, adaptive sealing ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0020] Please refer to Figures 1-4The utility model provides a pipe joint structure with good sealing performance, which comprises a lower pipe 1, a first supporting ring 2 arranged in the lower pipe 1, a lower flange plate 3 fixedly connected to the top of the lower pipe 1, an upper pipe 4 detachably installed on the top of the lower flange plate 3 through a connecting mechanism, a second supporting ring 9 arranged in the upper pipe 4, and a sealing mechanism arranged at the connection between the lower pipe 1 and the upper pipe 4.

[0021] In the connecting process of the upper pipe 4 and the lower pipe 1, the connecting mechanism is used, and the sealing performance of the pipe can be effectively improved by the cooperation of the sealing ring 10 and the soft rubber ring 12 and the use of the inflatable sealing strip 13, and the irregular surface inside the pipe has certain adaptability.

[0022] Specifically, the connecting mechanism comprises an upper flange plate 5 fixedly connected to the bottom of the upper pipe 4, and a plurality of groups of screw holes 6 formed in the outer surface of the upper flange plate 5.

[0023] Through the above technical scheme, the number of screw holes 6 is consistent with the number of screws 7, and each group of screws 7 passes through the corresponding screw hole 6.

[0024] Specifically, a plurality of groups of screws 7 are threadedly connected to the inner surface of the lower flange plate 3, the outer surface of the screw 7 is threadedly sleeved with the inner wall of the screw hole 6, and the outer surface of the screw 7 is threadedly sleeved with the nut 8.

[0025] Through the above technical scheme, the screw 7 will first pass through the perforation 11 formed in the surface of the sealing ring 10 before passing through the screw hole 6.

[0026] Specifically, the sealing mechanism comprises a sealing ring 10 arranged between the lower flange plate 3 and the upper flange plate 5, and a plurality of groups of perforations 11 formed in the outer surface of the sealing ring 10.

[0027] Through the above technical scheme, the screw 7 passes through the perforation 11 in the surface of the sealing ring 10 to stabilize the position of the sealing ring 10 during the connection of the upper and lower pipes.

[0028] Specifically, the top of the first supporting ring 2 is provided with a soft rubber ring 12, and the inside of the soft rubber ring 12 is provided with an inflatable sealing strip 13.

[0029] Through the above technical scheme, when water seeps into the soft rubber ring 12, it can be absorbed by the inflatable sealing strip 13, and the inflatable sealing strip 13 will expand and change shape.

[0030] Specifically, the top of the soft rubber ring 12 is provided with a rubber convex ring 14, and the outer surface of the rubber convex ring 14 is fixedly sleeved with an adaptive sealing ring 15.

[0031] Through the above technical scheme, the sealing ring 15 is sleeved on the rubber convex ring 14 to seal the expansion water stop 13 in the soft rubber ring 12 and improve the sealing of the pipeline connection from the inside.

[0032] Working principle: during the connection process of the upper pipeline 4 and the lower pipeline 1, the screw 7 is first inserted through the lower flange plate 3, the perforation 11 on the surface of the sealing ring 10, and the screw hole 6, and finally the nut 8 is screwed down along the screw 7 until the lower flange plate 3 and the upper flange plate 5 are completely fastened and connected by the screw 7 and the nut 8. At this time, the upper pipeline 4 and the lower pipeline 1 are stably and indirectly connected, and the sealing ring 10 is located between the upper flange plate 5 and the lower flange plate 3. The sealing ring 10 can seal the connection between the two groups of pipelines, and the internal area between the two groups of pipelines is provided with the soft rubber ring 12, the expansion water stop 13, and the rubber convex ring 14, which are limited by the first supporting ring 2 and the second supporting ring 9 to prevent displacement and allow the adaptive sealing ring 15 to seal the pipeline connection from the inside. When water seepage reaches the expansion water stop 13, it can be absorbed, and the expansion water stop 13 expands after absorbing water, causing the soft rubber ring 12 to deform accordingly. The expansion ability of the expansion water stop 13 allows the soft rubber ring 12 to more effectively adapt to the irregular surface of the pipeline inner wall, filling potential gaps and unevenness, ensuring that the soft rubber ring 12 always maintains close contact with the pipeline inner wall, improving the sealing performance. The sealing ring 10 is usually responsible for protecting the external environment from impurities, dust, moisture, and other external substances entering the connection part. The adaptive sealing ring 15 cooperates with the soft rubber ring 12 and the expansion water stop 13 to prevent internal medium leakage, making the connection part more adaptable to different environmental conditions. The two sealing elements work together on the outside and the inside to form a more reliable sealing protection, reducing the risk of leakage.

[0033] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pipe joint structure with a good sealing property, comprising a lower pipe (1), characterized in that: The inside of the lower pipeline (1) is provided with a first supporting ring (2), the top of the lower pipeline (1) is fixedly connected with a lower flange plate (3), the top of the lower flange plate (3) is detachably installed with an upper pipeline (4) through a connecting mechanism, the inside of the upper pipeline (4) is provided with a second supporting ring (9), and the connecting position of the upper pipeline (4) and the lower pipeline (1) is provided with a sealing mechanism.

2. The pipe joint structure according to claim 1, wherein: The connecting mechanism comprises an upper flange plate (5) fixedly connected to the bottom of the upper pipeline (4), and a plurality of groups of screw holes (6) are formed in the outer surface of the upper flange plate (5).

3. The pipe joint structure according to claim 2, wherein: The inner surface of the lower flange plate (3) is threadedly connected with a plurality of groups of screws (7), the outer surface of the screw (7) is threadedly connected with the inner wall of the screw hole (6), and the outer surface of the screw (7) is threadedly connected with a nut (8).

4. The pipe joint structure according to claim 1, wherein: The sealing mechanism comprises a sealing ring (10) arranged between the lower flange plate (3) and the upper flange plate (5), and a plurality of groups of perforations (11) are formed in the outer surface of the sealing ring (10).

5. The pipe joint structure according to claim 1, wherein: The top of the first supporting ring (2) is provided with a soft rubber ring (12), and the inside of the soft rubber ring (12) is provided with an expansion water stop (13).

6. The pipe joint structure according to claim 5, wherein: The top of the soft rubber ring (12) is provided with a rubber convex ring (14), and the outer surface of the rubber convex ring (14) is fixedly sleeved with a matching sealing ring (15).

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