Municipal water supply and drainage pipeline connecting structure with good sealing performance

Abstract

The utility model relates to the technical field of municipal water supply and drainage pipeline connection, and discloses a municipal water supply and drainage pipeline connecting structure with good sealing performance, which comprises a first pipe fitting and a second pipe fitting, a connecting device is arranged on the surface of the first pipe fitting, and a sealing device is arranged on the surface of the connecting device. The sealing device comprises an inner sealing ring, an air bag, a connecting box piece, an air pump, a connecting air pipe, a middle connecting column piece and a placing ring piece, and the placing ring piece is fixedly connected to the surface of the middle connecting column piece. According to the connecting structure with the good sealing performance for the municipal water supply and drainage pipeline, the sealing device is arranged, an air pump is started to be connected with the interior of an air bag of the air pipe box in a matched mode to convey air, the air bag is inflated and expanded, an inner sealing ring can be supported, and adjustment can be conducted when the sealing diameter needs to be adjusted; when the device is connected, the size of the sealing rubber ring can be adjusted and installed according to the positioning insertion rings of different sizes, and the device can be used for sealing pipelines of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal water supply and drainage pipeline connection, in particular to a connection structure for municipal water supply and drainage pipelines with good sealing performance. Background Technique

[0002] Municipal engineering refers to the construction project of municipal infrastructure. The construction of various public infrastructure supporting urban life belongs to the category of municipal engineering. Municipal water supply and drainage pipelines refer to the rainwater and sewage pipelines under municipal roads. According to the situation of municipal road facilities in China, different pipelines are generally set up and flow into rivers and sewage treatment plants respectively.

[0003] The prior art discloses a municipal water supply and drainage pipeline connection structure with the publication number of: CN216666801U, which includes a first drainage pipeline and a second drainage pipeline. The first drainage pipeline and the second drainage pipeline are arranged symmetrically left and right. The opposite surfaces of the first drainage pipeline and the second drainage pipeline are both connected with positioning insertion rings. An annular groove is arranged on the outer periphery of the positioning insertion ring, and a first sealing rubber ring is adhesively fixed in the inner cavity of the annular groove. A pipeline connection structure is arranged between the first drainage pipeline and the second drainage pipeline. Two groups of buckle rods are symmetrically connected to the side walls of the first drainage pipeline and the second drainage pipeline respectively. This municipal water supply and drainage pipeline connection structure is convenient for connecting drainage pipelines, the connection operation is convenient, and moreover, the drainage pipeline will not leak at the connection structure, and the connection sealing performance is good.

[0004] When the above-mentioned connection structure for municipal water supply and drainage pipelines inserts the first drainage pipeline and the second drainage pipeline into the corresponding outer cylinders respectively, the drainage pipelines can be quickly aligned during connection. The gaps between the positioning insertion ring and the positioning groove are sealed by the second sealing rubber ring and the first sealing rubber ring. However, the size of the sealing rubber ring needs to be adjusted and installed according to different sizes of the positioning insertion ring during connection of the above device, and it cannot be adapted to seal pipelines of different models, and the effect during use is not good, so it needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a connection structure for municipal water supply and drainage pipelines with good sealing performance, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A connection structure for municipal water supply and drainage pipelines with good sealing performance, including a first pipe fitting and a second pipe fitting. A connection device is arranged on the surface of the first pipe fitting, and a sealing device is arranged on the surface of the connection device.

[0007] The sealing device includes an inner sealing ring, an airbag, a connecting box member, an air pump, a connecting air pipe, an intermediate connecting column member and a placing ring member. The placing ring member is fixedly connected to the surface of the intermediate connecting column member. The airbag is fixedly connected to the surface of the placing ring member. The connecting box member is fixedly connected to the top of the surface limiting seat. The air pump is fixedly connected to the top of the connecting box member. The connecting air pipe is fixedly connected to the back of the air pump.

[0008] Preferably, the connecting device includes a docking kit, a limiting connection groove, a connecting ring, a threaded docking member and a surface limiting seat. The docking kit is fixedly connected to the surface of the first pipe fitting. The limiting connection groove is formed in the surface of the docking kit. The connecting ring is fixedly connected to the back of the docking kit.

[0009] Preferably, a groove is formed inside the surface limiting seat. The thickness of the groove is adapted to the thickness of the inner sealing ring. The groove can place and clamp the inner sealing ring. However, the inner sealing ring itself has elasticity and can be lifted by the airbag inside the inner ring to adjust the inner diameter of the inner sealing ring, and can be adapted to adjust pipes of different sizes.

[0010] Preferably, the intermediate connecting column member is fixedly connected between adjacent threaded docking members.

[0011] Preferably, one end of the connecting air pipe away from the back of the air pump is fixedly connected to the top of the airbag.

[0012] Preferably, an internal thread groove is formed inside the connecting ring. The threaded docking member is threadedly connected to the inside of the connecting ring. The setting of the internal thread groove matches the threaded docking member. After the threaded docking member is screwed in, it is rotated three times for docking connection, and the screwing-in depth can be controlled for convenient connection.

[0013] Preferably, the threaded docking member is fixedly connected to the front of the intermediate connecting column member. The surface limiting seat is connected to the top of the airbag. The inner sealing ring is connected to the inside of the surface limiting seat.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. For the connection structure for municipal water supply and drainage pipes with good sealing performance, by providing a sealing device, starting the air pump to deliver gas into the airbag through the connecting air pipe, the airbag inflates and expands, which can support the inner sealing ring. When it is necessary to adjust the sealing diameter, it can be adjusted, so that the size of the sealing rubber ring during connection can be adapted and adjusted with different-sized positioning insertion rings, and it can be adapted to seal and use different types of pipelines.

[0016] 2. The connection structure for municipal water supply and drainage pipes with good sealing performance is provided with a connection device. Align the surface limit seat with the limit connection groove inside the docking kit, then screw in the threaded docking part and rotate it three times for docking connection. Moreover, the screwing-in depth can be controlled, which can ensure the connection strength and prevent the inconvenient disassembly caused by over-connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic side view structure diagram of the whole utility model;

[0018] Figure 2 For the present utility model Figure 1 It is an enlarged structure diagram at position A in the present utility model;

[0019] Figure 3 It is a schematic front view structure diagram of the whole utility model;

[0020] Figure 4 For the present utility model Figure 3 It is an enlarged structure diagram at position B in the present utility model.

[0021] In the figure: 1. The first pipe fitting; 2. The connection device; 201. The docking kit; 202. The limit connection groove; 203. The connection ring; 204. The threaded docking part; 205. The surface limit seat; 3. The sealing device; 301. The inner sealing ring; 302. The airbag; 303. The connection box part; 304. The air pump; 305. The connection air pipe; 306. The middle connection column part; 307. The placement ring part; 4. The second pipe fitting. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides the following technical solutions:

[0024] A connection structure for municipal water supply and drainage pipes with good sealing performance includes a first pipe fitting 1 and a second pipe fitting 4. A connection device 2 is arranged on the surface of the first pipe fitting 1, and a sealing device 3 is arranged on the surface of the connection device 2.

[0025] The sealing device 3 includes an inner sealing ring 301, an airbag 302, a connecting box member 303, an air pump 304, a connecting air pipe 305, an intermediate connecting column member 306 and a placing ring member 307. The placing ring member 307 is fixedly connected to the surface of the intermediate connecting column member 306, the airbag 302 is fixedly connected to the surface of the placing ring member 307, the connecting box member 303 is fixedly connected to the top of the surface limiting seat 205, the air pump 304 is fixedly connected to the top of the connecting box member 303, the connecting air pipe 305 is fixedly connected to the back of the air pump 304, and one end of the connecting air pipe 305 away from the back of the air pump 304 is fixedly connected to the top of the airbag 302.

[0026] The connecting device 2 includes a docking kit 201, a limiting connection groove 202, a connecting ring 203, a threaded docking member 204 and a surface limiting seat 205. The docking kit 201 is fixedly connected to the surface of the first pipe fitting 1, the limiting connection groove 202 is opened on the surface of the docking kit 201, the connecting ring 203 is fixedly connected to the back of the docking kit 201, the threaded docking member 204 is fixedly connected to the front of the intermediate connecting column member 306, the surface limiting seat 205 is connected to the top of the airbag 302, the inner sealing ring 301 is connected to the inside of the surface limiting seat 205. A groove is opened inside the surface limiting seat 205, and the thickness of the groove is adapted to the thickness of the inner sealing ring 301. The setting of the groove can place the inner sealing ring 301 and clamp the inner sealing ring 301. However, the inner sealing ring 301 itself has elasticity and can be pushed up by the airbag 302 inside the inner ring to adjust the inner diameter of the inner sealing ring 301, and can be adapted to adjust pipes of different sizes. The intermediate connecting column member 306 is fixedly connected between adjacent threaded docking members 204. An internal thread groove is opened inside the connecting ring 203, and the threaded docking member 204 is threadedly connected to the inside of the connecting ring 203. The setting of the internal thread groove matches the threaded docking member 204. After the threaded docking member 204 is screwed in, it is rotated three circles for docking connection, and the screwing-in depth can be controlled for convenient connection.

[0027] In use, during installation, the intermediate connecting device 2 can be used to assist in connecting the first pipe fitting 1 and the second pipe fitting 4. During installation, the front threaded docking part 204 can be first aligned with the connecting ring 203 on the back of the first pipe fitting 1 and then screwed in. The distance from the front of the threaded docking part 204 to the front of the surface limiting seat 205 is exactly three full turns. When inserting, the surface limiting seat 205 should be aligned with the limiting connection groove 202 inside the docking kit 201, and then the threaded docking part 204 is screwed in and rotated three turns. After rotating three full turns, the position of the surface limiting seat 205 remains unchanged, and the surface limiting seat 205 can just be aligned with the limiting connection groove 202. The screwing of the threaded docking part 204 stops until the front of the surface limiting seat 205 contacts the back of the docking kit 201 for docking connection, and the screwing depth can be controlled, which can ensure the connection strength without the inconvenient disassembly caused by over-connection. Moreover, a sealing device 3 is provided on the surface of the connecting device 2. The inner sealing ring 301 inside the surface limiting seat 205 can fit the connection gap between the connecting ring 203 and the threaded docking part 204 to block the gap. At the same time, the air pump 304 can be started to cooperate with the connecting air pipe 305 to deliver gas into the airbag 302, so that the airbag 302 inflates and expands, and the inner sealing ring 301 can be propped up. When the sealing diameter needs to be adjusted, it can be adjusted, so that the size of the sealing rubber ring during connection of the device can be adapted and adjusted with different sizes of positioning insertion rings, and it can be adapted to the sealing use of different types of pipelines, with good use effects.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection structure for municipal water supply and drainage pipes with good sealing performance, comprising a first pipe fitting (1) and a second pipe fitting (4), characterized in that: A connecting device (2) is provided on the surface of the first pipe (1), and a sealing device (3) is provided on the surface of the connecting device (2); The sealing device (3) comprises an inner sealing ring (301), an air bag (302), a connecting box (303), an air pump (304), a connecting air pipe (305), an intermediate connecting column (306) and a placement ring (307); the placement ring (307) is fixedly connected to the surface of the intermediate connecting column (306); the air bag (302) is fixedly connected to the surface of the placement ring (307); the connecting box (303) is fixedly connected to the top of the surface limiting seat (205); the air pump (304) is fixedly connected to the top of the connecting box (303); and the connecting air pipe (305) is fixedly connected to the back of the air pump (304).

2. A connection structure for municipal water supply and drainage pipes with good sealing performance according to claim 1, characterized in that: The connection device (2) comprises a docking kit (201), a limiting connection groove (202), a connection ring (203), a threaded docking piece (204) and a surface limiting seat (205); the docking kit (201) is fixedly connected to the surface of the first pipe (1); the limiting connection groove (202) is provided on the surface of the docking kit (201); and the connection ring (203) is fixedly connected to the back side of the docking kit (201).

3. A connection structure for municipal water supply and drainage pipes with good sealing performance according to claim 2, characterized in that: A groove is provided inside the surface limiting seat (205), and the thickness of the groove matches the thickness of the inner sealing ring (301).

4. A connection structure for municipal water supply and drainage pipes with good sealing performance according to claim 2, characterized in that: The intermediate connecting column (306) is fixedly connected between adjacent threaded connecting members (204).

5. A connection structure for municipal water supply and drainage pipes with good sealing performance according to claim 1, characterized in that: One end of the connecting air pipe (305) away from the back of the air pump (304) is fixedly connected to the top of the air bag (302).

6. A connection structure for municipal water supply and drainage pipes with good sealing performance according to claim 2, characterized in that: An internal thread groove is provided inside the connection ring (203), and the threaded connection piece (204) is threadedly connected to the inside of the connection ring (203).

7. A connection structure for municipal water supply and drainage pipes with good sealing performance according to claim 2, characterized in that: The threaded joint (204) is fixedly connected to the front side of the middle connecting column (306), the surface limiting seat (205) is connected to the top of the airbag (302), and the inner sealing ring (301) is connected to the inside of the surface limiting seat (205).

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