Anti-leakage sealing joint for pipeline butt joint

Abstract

A water leakage prevention sealing joint for pipeline butt joint comprises a straight cylinder part located at the joint of two water conveying pipelines, the inner edge face of the straight cylinder part makes contact with the outer edge faces of the water conveying pipelines, the two ends of the straight cylinder part are connected with fixing parts through connecting parts, and the fixing parts are fixed to the water conveying pipelines. An annular groove is formed in the end, close to the connecting part, of the fixing part, a first sealing ring is installed in the annular groove and is far away from the inner end face of the fixing part, and the inner edge face and the outer edge face of the first sealing ring abut against the water conveying pipeline and the inner side face of the fixing part correspondingly; a water absorption pad is arranged between the first sealing ring and the end face of the fixing part and is annular, and the inner end face and the outer end face abut against the water conveying pipeline and the fixing part correspondingly. The connecting part of the two water conveying pipelines can be sealed, the situation of water leakage is greatly reduced, a water blocking cavity is formed between the connecting part and the water conveying pipelines through the arrangement of the circular-truncated-cone-shaped connecting part, a very small part of leaked water can be absorbed in cooperation with water blocking cotton, and water leakage can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline butt joint technical field, concretely is a pipeline butt joint is with the leakage prevention sealing joint. BACKGROUND

[0002] In the field of municipal water, resident water, office water etc., all need to carry out pipeline laying before road construction is completed or house construction is completed, and water delivery pipeline is divided into overground pipeline and underground pipeline according to different use purposes, and different pipe diameters are selected according to different use requirements.

[0003] In order to facilitate the transportation and use of water delivery pipeline, usually the whole pipeline needs to be connected by several water delivery pipelines, in the connection process of water delivery pipeline, there are threaded connection, flange connection, welding connection, socket connection, pipeline adhesive connection etc., threaded connection, welding connection and adhesive connection can guarantee the connection strength and sealing performance of pipeline, but are not suitable for pipeline connection with joints, and for flange connection, socket connection and other connection methods requiring additional connecting pieces, two water delivery pipelines are prone to leakage at the joint, which can pollute the environment or soil at the leakage position, and a large number of bolts are needed for fixing in the above-mentioned connection method, and the connection process is relatively complicated. SUMMARY

[0004] To solve the technical problems in the above background art, the utility model provides a pipeline butt joint is with the leakage prevention sealing joint.

[0005] The utility model technical scheme is as follows:

[0006] A pipeline butt joint is with the leakage prevention sealing joint, which can butt joint and fix two water delivery pipelines, comprising a straight cylinder part located at the connection part of two water delivery pipelines, and the inner edge surface of the straight cylinder part is in contact with the outer edge surface of the water delivery pipeline, the straight cylinder part is connected with a fixing part through a connecting part at both ends, and the fixing part is fixed with the water delivery pipeline;

[0007] An annular groove is formed in one end of the fixing part close to the connecting part, and a first sealing ring is installed in the annular groove, the first sealing ring is arranged away from the inner end surface of the fixing part, and the inner edge surface and the outer edge surface thereof are respectively in abutment with the inner side surface of the water delivery pipeline and the fixing part;

[0008] A water absorption pad is arranged between the first sealing ring and the end surface of the fixing part, and the water absorption pad is annular, and the inner and outer end surfaces thereof are respectively in abutment with the water delivery pipeline and the fixing part.

[0009] In order to facilitate the fixing of the first sealing ring, two limiting rings are installed on the inner wall of the annular groove, and the first sealing ring is located between the two limiting rings.

[0010] In order to form a water blocking space on the side of the first sealing ring close to the water pipeline connection, the connecting part is a circular truncated cone cylinder, and the smaller diameter end is connected with the straight cylinder part, and the connecting part and the water pipeline form a water blocking cavity.

[0011] In order to be able to absorb part of the water when the water pipeline connection leaks, the water blocking cavity is filled with water blocking cotton.

[0012] In order to facilitate the observation of whether the two water pipelines leak, the connecting part is provided with an observation hole penetrating through the side wall, and a detachable sealing plug is installed at the observation hole.

[0013] The fixing part and the water pipeline are fixed by the inner thread formed on the inner end face of the end of the fixing part away from the annular groove, and the outer thread formed on the outer edge face of the water pipeline.

[0014] In order to improve the sealing effect, the water absorbing pad, the first sealing ring and the water blocking cotton are in contact in sequence.

[0015] In order to improve the anti-leakage effect of the connection of the two water pipelines, the inner edge face of the straight cylinder part is provided with a mounting groove at the middle position, the second sealing ring is installed in the mounting groove, and the two water pipelines are connected with the second sealing ring.

[0016] In order to improve the stability of the connection of the second sealing ring and the water pipeline, the position where the second sealing ring and the water pipeline are in contact is arranged in a stepped shape.

[0017] In order to improve the sealing effect of the connection, the second sealing ring is connected with the third sealing ring on both sides, and the third sealing ring is in contact with the inner wall of the water pipeline.

[0018] The utility model discloses a kind of anti-leakage water sealing joints for pipeline butt joint, first, by being provided with straight cylinder part, and cooperate connecting part and fixed part, two water pipelines apart can be connected and fixed when laying water pipeline, by the thread connection with pipeline, the time of fixing two water pipelines is saved;Second, by the setting of second sealing ring and third sealing ring, the connection of two water pipelines can be sealed, greatly reduce the situation of leakage, and by being provided with the connecting part of circular truncated cone cylinder, water blocking cavity is formed between the connecting part and the water pipeline, cooperate water blocking cotton can absorb the very small part of water leakage, can prevent water leakage;Finally, by being provided with annular groove in fixed part, cooperate the first sealing ring installed in the inside, secondary water blocking can be formed, block the moisture that passes through water blocking cotton, water absorbing pad is set outside the first sealing ring to carry out third water blocking, in turn can prevent the water leakage from fixed part, greatly improve the anti-leakage water effect of butt joint. DRAWINGS

[0019] The solutions and advantages of the present application will become apparent to those of ordinary skill in the art, by reading the following detailed description of the preferred embodiments, in conjunction with the drawings. The drawings are for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application.

[0020] In the drawings:

[0021] Figure 1 is a schematic diagram of pipe butt joint;

[0022] Figure 2 is a sectional view of the sealing joint (complete structure);

[0023] Figure 3 is an enlarged view of A;

[0024] Figure 4 is a sectional view of the sealing joint (without the first sealing ring and other components installed);

[0025] The components represented by the reference numerals in the drawings are:

[0026] 1, water delivery pipe; 2, straight cylinder portion; 3, connecting portion; 4, fixed portion; 5, annular groove; 6, first sealing ring; 7, water absorption pad; 8, limiting ring; 9, water blocking cavity; 10, water blocking cotton; 11, observation hole; 12, sealing plug; 13, internal thread; 14, external thread; 15, installation groove; 16, second sealing ring; 17, third sealing ring. DETAILED DESCRIPTION

[0027] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings.

[0028] Embodiments

[0029] As mentioned in the background, the existing water delivery pipe 1 needs to be butt jointed in pairs during laying, and the existing butt joint method has many disadvantages, such as the flange, receiving connection and other methods need to use more bolts, which is more laborious to install, and water leakage is easy to occur at the joint, which affects the environment of the pipe location, therefore, the inventor designs a new type of anti-leakage butt joint according to the existing pipe joint and pipe structure, which will be described in detail below in conjunction with the drawings.

[0030] The present embodiment provides a pipe butt joint anti-leakage sealing joint, referring to Figures 1-3, can butt joint and fix two water delivery pipes 1, including a straight cylinder part 2 located at the joint of the two water delivery pipes 1, and the inner edge surface of the straight cylinder part 2 is in contact with the outer edge surface of the water delivery pipe 1, the straight cylinder part 2 is in extrusion connection with the water delivery pipe 1, and the vertical center line of the straight cylinder part 2 is the axis of symmetry of the two water delivery pipes 1, and in order to be able to seal the joint position, a mounting groove 15 is provided in the middle position of the inner edge surface of the straight cylinder part 2, the mounting groove 15 is provided in the form of a ring, a second sealing ring 16 is mounted in the mounting groove 15, and the two water delivery pipes 1 are in contact connection with the second sealing ring 16, the two water delivery pipes 1 extrude the second sealing ring 16, so as to ensure the sealing effect of the joint, and form a first level of protection against water leakage at the joint of the water delivery pipe 1.

[0031] On the basis of the above structure, the position where the second sealing ring 16 is in contact with the water delivery pipe 1 is provided in the form of a step, that is, a circular-arc-shaped groove is provided at the edge position of the water delivery pipe 1, and the cross-sectional shape of the second sealing ring 16 is in the form of a step, which extends into the mounting groove 15 and the groove at the edge of the water delivery pipe 1 respectively, the two water delivery pipes 1 extrude and fix the second sealing ring 16, in addition, the second sealing ring 16 is connected with a third sealing ring 17 on both sides, and the third sealing ring 17 is in contact with the inner wall of the water delivery pipe 1, the third sealing ring 17 extends away from the second sealing ring 16, so as to increase the sealing area of the joint of the two water delivery pipes 1 and improve the sealing effect.

[0032] In the embodiment, the straight cylinder part 2 is connected with a fixing part 4 through a connecting part 3 at both ends, and the fixing part 4 is fixed with the water delivery pipe 1. Figure 4 Firstly, the connecting part 3 is described, the connecting part 3 is in the form of a circular truncated cone, and the end with a smaller diameter is connected with the straight cylinder part 2, so that the end of the connecting part 3 away from the straight cylinder part 2 is inclined outward relative to the water delivery pipe 1, so as to slow down the flow rate of water flow if water leakage occurs, a water blocking cavity 9 is formed between the connecting part 3 and the water delivery pipe 1, the water blocking cavity 9 can contain water leakage, and water blocking cotton 10 is filled in the water blocking cavity 9, so as to absorb water leakage and form a second level of protection against water leakage.

[0033] In addition, the second level of protection is the most intuitive and most convenient position to observe whether water leakage occurs, therefore, the connecting part 3 penetrates the side wall to form an observation hole 11, the observation hole 11 can be provided with one or multiple observation holes at different positions, so as to facilitate observation, and a detachable sealing plug 12 is mounted at the observation hole 11, the sealing plug 12 can be opened regularly to observe whether the water blocking cotton 10 in the water blocking cavity 9 absorbs water through the observation hole 11, so as to determine whether water leakage occurs or the intensity of water leakage, and facilitate timely treatment.

[0034] In addition, in combination with Figures 2-4An annular groove 5 is provided in one end of the fixing portion 4 close to the connecting portion 3, and the annular groove 5 is communicated with the truncated cone-shaped connecting portion 3, and a first sealing ring 6 is installed in the annular groove 5. The first sealing ring 6 is arranged away from the inner end surface of the fixing portion 4, that is, it does not contact the inner end surface of the fixing portion 4, and its inner edge surface and outer edge surface are respectively against the water pipe 1 and the inner side surface of the fixing portion 4, which can form a seal. Moreover, two limiting rings 8 are installed on the inner wall of the annular groove 5, and the first sealing ring 6 is located between the two limiting rings 8, and the first sealing ring 6 is fixed by the two limiting rings 8.

[0035] On the basis of the above structure, since the first sealing ring 6 and the fixed part 4 are arranged at intervals, a water-absorbing pad 7 is provided between the first sealing ring 6 and the end face of the fixed part 4, and is arranged in a ring shape, with the inner and outer end faces respectively abutting against the water pipe 1 and the fixed part 4, playing a certain sealing role, and the purpose of providing the water-absorbing pad 7 is to absorb moisture that penetrates through the first sealing ring 6, forming a three-level protection for anti-leakage of the pipe docking.

[0036] It should be noted that the water absorbent pad 7, the first sealing ring 6, and the water-blocking cotton 10 are abutted in sequence, that is, the water absorbent pad 7 and the first sealing ring 6 are abutted, and the first sealing ring 6 and the water-blocking cotton 10 are abutted, which further improves the overall sealing effect.

[0037] In this solution, in order to facilitate the fixation of the water pipe 1 and the joint, the inner end surface of the fixing part 4 away from the annular groove 5 is provided with an internal thread 13, and the outer edge surface of the water pipe 1 is provided with an external thread 14 adapted to the internal thread 13. Both fixing parts 4 are provided with internal threads 13 and are located outside the annular groove 5. The diameter of the part of the water pipe 1 without the external thread 14 should not be greater than the minimum aperture of the fixing part 4 where the internal thread 13 is provided, to ensure that the water pipe 1 can enter the fixing part 4. The butt joint is now connected to the laid water pipe 1. At this time, the butt joint is rotated to complete the fixation, and then the next water pipe 1 is inserted into the butt joint, and the butt joint is rotated to achieve the fixation of the two. Or when both water pipes 1 are being laid, the two pipes are respectively inserted into the fixing part 4, and the butt joint or the water pipe 1 is rotated to complete the fixation.

Claims

1. A water-tight sealing joint for pipe docking, capable of docking and fixing two water pipelines (1), characterized in that: It comprises a straight tube portion (2) located at the connection between two water pipelines (1), wherein the inner edge surface of the straight tube portion (2) contacts the outer edge surface of the water pipeline (1), and the two ends of the straight tube portion (2) are connected to a fixing portion (4) via a connecting portion (3), and the fixing portion (4) is fixed to the water pipeline (1); An annular groove (5) is provided in one end of the fixing portion (4) close to the connecting portion (3), and a first sealing ring (6) is installed in the annular groove (5). The first sealing ring (6) is arranged away from the inner end surface of the fixing portion (4), and its inner edge surface and outer edge surface respectively abut against the inner side surface of the water pipe (1) and the fixing portion (4); A water-absorbing pad (7) is provided between the first sealing ring (6) and the end surface of the fixing portion (4), and is arranged in a ring shape, with the inner and outer end surfaces respectively abutting against the water delivery pipe (1) and the fixing portion (4).

2. The anti-leakage sealing joint for pipe connection according to claim 1, characterized in that: Two limiting rings (8) are installed on the inner wall of the annular groove (5), and the first sealing ring (6) is located between the two limiting rings (8).

3. The anti-leakage sealing joint for pipe connection according to claim 1, characterized in that: The connecting portion (3) is in the shape of a truncated cone, and the end with a smaller diameter is connected to the straight cylindrical portion (2). A water-blocking cavity (9) is formed between the connecting portion (3) and the water delivery pipeline (1).

4. The anti-leakage sealing joint for pipe connection according to claim 3, characterized in that: The water-blocking cavity (9) is filled with water-blocking cotton (10).

5. The anti-leakage sealing joint for pipe connection according to claim 4, characterized in that: The connecting portion (3) is provided with an observation hole (11) penetrating the side wall, and a detachable sealing plug (12) is installed at the observation hole (11).

6. The anti-leakage sealing joint for pipe connection according to claim 1, characterized in that: An inner end surface of one end of the fixing portion (4) away from the annular groove (5) is provided with an internal thread (13), and an outer edge surface of the water delivery pipe (1) is provided with an external thread (14) adapted to the internal thread (13).

7. The anti-leakage sealing joint for pipe connection according to claim 4, characterized in that: The water-absorbing pad (7), the first sealing ring (6), and the water-blocking cotton (10) are in contact with each other in sequence.

8. The anti-leakage sealing joint for pipe connection according to claim 1, characterized in that: A mounting groove (15) is provided in the middle of the inner edge surface of the straight cylindrical portion (2), a second sealing ring (16) is installed in the mounting groove (15), and the two water delivery pipes (1) are connected in abutment with the second sealing ring (16).

9. The anti-leakage sealing joint for pipe connection according to claim 8, characterized in that: The position where the second sealing ring (16) contacts the water pipe (1) is arranged in a stepped shape.

10. The anti-leakage sealing joint for pipe connection according to claim 9, characterized in that: The second sealing ring (16) is connected to third sealing rings (17) on both sides, and the third sealing rings (17) are arranged in contact with the inner wall of the water pipe (1).

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