Connecting structure with high sealing performance at joint of drainage pipe network

Abstract

The utility model discloses a connection structure of drainage pipe network joint with strong leakproofness, including fixed cylinder and connect the elevating mechanism of fixed cylinder bottom, fixed cylinder both ends coaxially set up annular cavity and through annular cavity threaded connection threaded ring, fixed cylinder inner middle part is fixed with annular inflatable air bag, and fixed cylinder inner middle part is fixed with the annular inflatable air bag through the annular cavity threaded connection threaded ring. A fixing plate with an arc-shaped cross section is arranged on the inner ring of the fixing cylinder, the outer side wall of the fixing plate is connected with a sliding block arranged in the fixing cylinder in a radial sliding mode, and the movable end of the sliding block is located in the annular cavity. And the problem that when the device is used, the sealing performance of a connecting structure is poor, and consequently water leakage is likely to occur is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection structures, in particular to a connection structure with strong sealing performance at the joint of a drainage pipe network. Background Technique

[0002] A pipeline connection structure refers to a series of components and methods for connecting each pipe segment in a pipeline system to ensure the smooth flow of fluid, and is used in pipeline systems in various fields. Among them, the urban drainage pipe network is an important part of urban infrastructure, which consists of various pipelines, pumping stations, sewage treatment plants and other facilities, aiming to ensure the health and safety of the urban water environment. Therefore, a large number of pipeline connection structures will be used.

[0003] The utility model with the existing authorization announcement number CN218861707U discloses an external connection fastening structure for a drainage pipe network, which includes two threaded pipes respectively threadedly connected to two pipelines; it also includes an adjusting pipe and a cam located between the two threaded pipes; a telescopic assembly, and the telescopic assembly rotates the adjusting pipe to adjust the positions of the two threaded pipes to facilitate the threaded connection of the threaded pipes with the pipelines.

[0004] Adopting the above technical solution, under the action of the convex block and the sliding groove, another connecting sleeve slides with the adjusting cylinder, so as to adjust the distance between the two threaded pipes, facilitating the threaded connection of the two threaded pipes with the two pipelines in sequence. Moreover, the third fixing ring is rotatably connected to both the first fixing ring and the second fixing ring, so that the two threaded pipes can rotate independently, facilitating connection with the pipelines and not twisting the pipelines. And the cam presses and fixes the first fixing ring to keep the two threaded pipes stable, not rotating by themselves, and maintaining a fixed effect. However, when connecting the two pipelines together with the above technical solution, its sealing performance is not good, and there will be a problem of water leakage.

[0005] Therefore, those skilled in the art provide a connection structure with strong sealing performance at the joint of a drainage pipe network to solve the problems raised in the above background technique. Summary of the Invention

[0006] The technical problem to be solved by the utility model is that there is poor sealing performance after the butt-jointed pipelines are connected with the existing sealing structure, resulting in water leakage.

[0007] To solve the above technical problem, the technical solution adopted by the utility model is: a connection structure with strong sealing performance at the joint of a drainage pipe network, which includes a fixed cylinder and a lifting mechanism connected to the bottom of the fixed cylinder. Ring-shaped cavities are coaxially arranged at both ends of the fixed cylinder, and threaded rings are threadedly connected through the ring-shaped cavities. An annular inflatable airbag is fixed in the middle of the fixed cylinder. An arc-shaped cross-section fixing plate is arranged on the inner circle of the fixed cylinder. The outer side wall of the fixing plate is connected with a sliding block that is radially slidably arranged in the fixed cylinder, and the movable end of the sliding block is located in the ring-shaped cavity.

[0008] Preferably, the lifting mechanism includes a base, a rotating shaft vertically rotatably disposed in the base, a threaded shaft coaxially and fixedly connected to the top end of the rotating shaft, and a lifting plate threadedly connected to the top of the threaded shaft. A sector-shaped notch for accommodating the fixed cylinder is provided at the top of the lifting plate. The rotating shafts are distributed at the four corners of the base, and the lifting plate is connected to two threaded shafts at the same end of the base.

[0009] Preferably, a rotating plate is coaxially and fixedly connected to the bottom end of the threaded shaft, and arc-shaped notches are uniformly provided on the rotating plate.

[0010] Preferably, the outer peripheral surface of the threaded ring is threadedly connected to the inner side wall of the annular cavity of the fixed cylinder, and an annular rotating plate is coaxially and fixedly connected to the end wall of the threaded ring.

[0011] Preferably, an arc-shaped rubber pad is fixedly connected to the inner side wall of the fixing plate.

[0012] Preferably, an inflation tube is fixedly connected to the outer side wall of the inflatable airbag. The movable end of the inflation tube is located outside the fixed cylinder, and a round cap is installed on the inflation tube.

[0013] The present utility model provides a connection structure with strong sealing performance at the connection of a drainage pipe network. By providing a rotating plate, the rotating plate can apply a rotating force to the threaded ring. In cooperation with the threaded connection between the threaded ring and the fixed cylinder, the sliding block can be pushed to move downward, so that the fixing plate fixed at one end of the sliding block can move along with the sliding block. Thus, the rubber pad fixed on the outer surface of the fixing plate can be tightly attached to the surface of the pipe to be installed, and the two pipes to be installed can be installed inside the fixed cylinder. Subsequently, the round cap is unscrewed, and gas is filled into the inflation tube, so that the inflatable airbag fixed on the inner wall of the fixed cylinder can expand and then block the gap between the rubber pads, effectively avoiding the problem of poor sealing performance of the connection structure and easy water leakage when the device is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 It is a schematic three-dimensional structure diagram of the threaded shaft in an embodiment of the present utility model.

[0017] Figure 3 It is a schematic three-dimensional structure diagram of the threaded ring in an embodiment of the present utility model.

[0018] Figure 4This is a schematic three-dimensional structure diagram of the rubber pad in the embodiment of the present utility model.

[0019] In the figure: 1, fixed cylinder; 2, sealing mechanism; 201, rotating plate; 202, inflatable tube; 203, inflatable airbag; 204, round cap; 205, threaded ring; 206, sliding block; 207, fixing plate; 208, rubber pad; 3, lifting plate; 4, base; 5, pipe; 6, rotating shaft; 7, rotating plate; 8, threaded shaft. Specific embodiments

[0020] As Figures 1-4 shown, the present utility model provides a connection structure with strong sealing performance at the connection of a drainage pipe network, including a fixed cylinder 1, a lifting mechanism connected to the bottom of the fixed cylinder 1, and a sealing mechanism 2. The sealing mechanism 2 includes two threaded rings 205. Both ends of the fixed cylinder 1 are coaxially provided with annular cavities and are threadedly connected with threaded rings 205 through the annular cavities. An annular inflatable airbag 203 is fixed in the middle of the inner circle of the fixed cylinder 1. An arc-shaped cross-section fixing plate 207 is arranged on the inner circle of the fixed cylinder 1. The outer side wall of the fixing plate 207 is connected with a sliding block 206 that is radially slidably arranged in the fixed cylinder 1. The movable end of the sliding block 206 is located in the annular cavity.

[0021] The overall height of the fixed cylinder 1 is adjusted by using the lifting mechanism, so as to ensure that the device can adapt to installation spaces of different heights. The two pipes 5 are respectively inserted into the two ends of the fixed cylinder 1, so that the butting joints of the pipes 5 are located inside the fixed cylinder 1. By rotating the threaded ring 205, when the threaded ring 205 is screwed into the fixed cylinder 1, it contacts the sliding block 206, and the sliding block 206 is pushed towards the axis direction of the fixed cylinder 1, so that the sliding block 206 drives the fixing plate 207 to move. The two fixing plates 207 can be assembled into a circle, and the pipes 5 are clamped during the movement of the fixing plate 207. Then, the inflatable airbag 203 is inflated to seal the joints of the two pipes 5.

[0022] An inclined mouth is arranged on the inner side of the end of the threaded ring 205 located inside the fixed cylinder 1, so that the threaded ring 205 can stably press the sliding block 206 inward during the screwing process.

[0023] As Figure 1 and Figure 2 shown. The lifting mechanism includes a base 4, a rotating shaft 6 vertically rotatably arranged in the base 4, a threaded shaft 8 coaxially and fixedly connected to the top of the rotating shaft 6, and a lifting plate 3 threadedly connected to the top of the threaded shaft 8. A sector-shaped notch for accommodating the fixed cylinder 1 is arranged at the top of the lifting plate 3. The rotating shafts 6 are distributed at the four corners of the base 4, and the lifting plate 3 is connected to the two threaded shafts 8 at the same end of the base 4. The base 4 can be used to increase the contact area between the device and the ground, so that the device can be more stable during operation, and the rotating shaft 6 provides a suitable installation position.

[0024] As Figure 2 shown. A rotating plate 7 is coaxially and fixedly connected to the bottom end of the threaded shaft 8, and arc-shaped notches are uniformly arranged on the rotating plate 7. Since both ends of the lifting plate 3 are respectively connected to two threaded shafts 8, by rotating the rotating plate 7, the threaded shaft 8 can be rotated, so as to adjust the height of the lifting plate 3, and further stably support the fixed cylinder 1 at different heights.

[0025] As Figure 1 and Figure 3 shown. The outer peripheral surface of the threaded ring 205 is threadedly connected to the inner side wall of the annular cavity of the fixed cylinder 1, and an annular rotating plate 201 is coaxially and fixedly connected to the end wall of the threaded ring 205. By rotating the rotating plate 201, the threaded ring 205 can be rotated, and the threaded ring 205 can be easily screwed into the fixed cylinder 1.

[0026] As Figure 3 shown, to improve the clamping stability of the fixing plate 207 on the pipeline 5. An arc-shaped rubber pad 208 is fixedly connected to the inner side wall of the fixing plate 207. By using the rubber pad 208 to increase the friction force, the axial movement of the pipeline 5 can be avoided, and at the same time, the rubber pad 208 can be compressed to further improve the sealing performance.

[0027] As Figure 1 and Figure 4 shown, an air charging pipe 202 is fixedly connected to the outer side wall of the inflatable airbag 203, the movable end of the air charging pipe 202 is located outside the fixed cylinder 1, and a round cap 204 is installed on the air charging pipe 202. By unscrewing the round cap 204, the air charging pipe 202 can be used to inflate the inflatable airbag 203, and after the inflatable airbag 203 expands, it can seal the gap between the two pipelines 5 in contact.

[0028] The working principle of the utility model is as follows: When in use, the rotating plate 7 can drive the threaded shaft 8 to rotate. Thus, the overall height of the fixed cylinder 1 can be adjusted by utilizing the threaded connection relationship between the lifting plate 3 and the threaded shaft 8. And since the rotating shaft 6 of the fixed pipe at the bottom end of the threaded shaft 8 is rotationally connected to the base 4, the rotational force generated when the threaded shaft 8 rotates can be offset. Subsequently, the rotating plate 201 can apply a rotational force to the threaded ring 205. In cooperation with the threaded connection relationship between the threaded ring 205 and the fixed cylinder 1, the sliding block 206 can be pushed to move downward. Thus, the fixing plate 207 fixed at one end of the sliding block 206 can move along with the sliding block 206. Thereby, the rubber pad 208 fixed on the outer surface of the fixing plate 207 can be tightly attached to the surface of the pipeline 5. Thus, the two pipelines 5 can be installed inside the fixed cylinder 1. Subsequently, the circular cap 204 is unscrewed, and gas is filled into the inside of the inflatable tube 202, so that the inflatable airbag 203 fixed on the inner wall of the fixed cylinder 1 can expand and then block the gap between the rubber pads 208. Subsequently, the circular cap 204 can be used to block the air inlet of the inflatable tube 202, effectively avoiding the problem of poor sealing performance of the connection structure during the use of the device, which easily leads to water leakage.

Claims

1. A connection structure with strong sealing performance at the connection of a drainage pipe network, characterized in that: It includes a fixed cylinder (1) and a lifting mechanism connected to the bottom of the fixed cylinder (1). Annular cavities are coaxially arranged at both ends of the fixed cylinder (1), and a threaded ring (205) is threadedly connected through the annular cavities. An annular inflatable airbag (203) is fixed in the middle of the fixed cylinder (1). An arc-shaped fixed plate (207) is arranged on the inner circle of the fixed cylinder (1). The outer side wall of the fixed plate (207) is connected to a sliding block (206) that is radially slidably arranged in the fixed cylinder (1). The movable end of the sliding block (206) is located in the annular cavity.

2. The connection structure with strong sealing performance at the joint of the drainage pipe network according to claim 1, characterized in that: The lifting mechanism includes a base (4), a rotating shaft (6) vertically rotatably arranged in the base (4), a threaded shaft (8) coaxially and fixedly connected to the top of the rotating shaft (6), and a lifting plate (3) threadedly connected to the top of the threaded shaft (8). A fan-shaped notch for accommodating the fixed cylinder (1) is arranged on the top of the lifting plate (3). The rotating shafts (6) are distributed at the four corners of the base (4), and the lifting plate (3) is connected to two threaded shafts (8) at the same end of the base (4).

3. The connection structure with strong sealing performance at the joint of the drainage pipe network according to claim 2, characterized in that: A rotating plate (7) is coaxially and fixedly connected to the bottom end of the threaded shaft (8), and arc-shaped notches are evenly arranged on the rotating plate (7).

4. The connection structure with strong sealing performance at the connection of the drainage pipe network according to claim 1, characterized in that: The outer peripheral surface of the threaded ring (205) is threadedly connected to the inner side wall of the annular cavity of the fixed cylinder (1), and an annular rotating plate (201) is coaxially and fixedly connected to the end wall of the threaded ring (205).

5. The connection structure with strong sealing performance at the joint of the drainage pipe network according to claim 1, characterized in that: An arc-shaped rubber pad (208) is fixedly connected to the inner side wall of the fixed plate (207).

6. The connection structure with strong sealing performance at the joint of a drainage pipe network according to claim 1, characterized in that: An air filling pipe (202) is fixedly connected to the outer side wall of the inflatable airbag (203). The movable end of the air filling pipe (202) is located outside the fixed cylinder (1), and a circular cap (204) is installed on the air filling pipe (202).

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