A sewer splicing device

Abstract

The utility model discloses a kind of drainage pipeline splicing devices, specifically related to pipeline technical field, between the water outlet corrugated pipe of kitchen sink and the water trap of drain pipe, including the threaded connection pipe being installed in the top end of water trap and the upper sealing sleeve pipe being sleeved in the outside of water outlet corrugated pipe, the upper sealing sleeve pipe inside is provided with adjustable sealing element, upper sealing sleeve pipe outer wall is connected with air pressure pipe spare, air pressure pipe spare is communicated with sealing element by penetrating upper sealing sleeve pipe, the other end of air pressure pipe spare is connected with air pressure adjusting spare.The utility model is matched by using inflatable sealing tube spacing and corrugated pipe protrusion, precise filling recess realizes sealing dead angle, piston type air pressure adjusting spare can compensate pressure, sealing is durable and does not need to replace frequently, outside water seal is filled with inflatable sealing band and multiple node sealing in water trap, prevent reverse smell and prevent insect, lower sealing sleeve pipe can be dismantled, rubber hose can be bent, dismounting and maintaining are convenient and adapt to narrow space.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and more specifically, to a drainage pipeline splicing device. Background Technology

[0002] As a key subsystem for indoor fluid transport in buildings, the kitchen drainage system consists of a corrugated drain pipe (referred to as "outlet corrugated pipe") at the sink outlet, the terminal main drain pipe, and the water trap assembly between the two. The water trap forms a liquid seal barrier through the static water seal left inside the pipe, which theoretically can prevent odor gases from the main drain pipe from flowing back into the room and temporarily store a small amount of suspended residue to reduce the risk of blockage. It is the current mainstream design for preventing backflow of odors.

[0003] However, in actual operation, the liquid seal barrier of the trap is prone to functional failure due to factors such as water temperature fluctuations, fluctuations in the water seal level caused by water flow impact, or a reduction in the effective height of the water seal caused by residue buildup inside the pipe after long-term use. This allows odorous gases to break through the water seal and diffuse back into the kitchen space. At the same time, small insects (such as moth larvae and cockroaches) in the drain pipe can climb through the gaps in the water seal or the inner wall of the pipe and enter the room from the connection between the top of the trap and the outlet corrugated pipe, posing a threat to the hygiene of the kitchen environment.

[0004] To address the aforementioned issues, existing engineering practices often employ flexible sealing materials (such as plastic wrap or sealing tape) to wrap and seal the connection between the outlet corrugated pipe and the trap. However, because the outer wall of the outlet corrugated pipe has a periodically convex corrugated structure, flexible materials struggle to form a tight seal with the corrugated recesses, easily creating microscopic sealing gaps. Furthermore, these materials exhibit poor resistance to oil stains and aging, and are prone to degradation and damage under the influence of kitchen wastewater and changes in ambient temperature and humidity, requiring frequent replacement to maintain the sealing effect. This not only increases maintenance workload but also carries the risk of intermittent seal failure, making it difficult to meet long-term, stable sealing requirements. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a drainage pipe splicing device, which is installed between the water outlet corrugated pipe of a kitchen sink and the water trap of the drain pipe. It includes a threaded connecting pipe installed at the top of the water trap and an upper sealing sleeve fitted over the water outlet corrugated pipe. An adjustable sealing element is provided inside the upper sealing sleeve. A pneumatic fitting is connected to the outer wall of the upper sealing sleeve, penetrating the upper sealing sleeve and communicating with the sealing element. The other end of the pneumatic fitting is connected to a pneumatic pressure regulating element. The sealing element is inflated within the upper sealing sleeve by the pneumatic fitting and the pneumatic pressure regulating element, filling the gap between the upper sealing sleeve and the water outlet corrugated pipe. A mechanical sealing ring is fitted at the bottom of the upper sealing sleeve, and a detachable lower sealing sleeve is fitted outside the threaded connecting pipe. A rubber hose connects the bottom of the upper sealing sleeve to the top of the lower sealing sleeve via the mechanical sealing ring.

[0006] In a preferred embodiment, a limiting ring is fixed on the outer wall of the water trap located below the threaded connecting pipe, and a sealing ring is attached to the top of the limiting ring, which is in contact with the bottom end of the lower sealing sleeve.

[0007] In a preferred embodiment, the sealing element includes a plurality of inflatable sealing tubes fixed on the inner wall of the upper sealing sleeve. The inflatable sealing tubes are hollow inside. The spacing between the plurality of inflatable sealing tubes is the same as the spacing of the protrusions on the outer wall of the water outlet corrugated pipe. The inflatable sealing tubes fit into the recesses adjacent to the protrusions on the outer wall of the water outlet corrugated pipe.

[0008] In a preferred embodiment, a limiting member for longitudinally limiting the water outlet bellows is installed at the top end of the upper sealing sleeve. The limiting member includes a limiting screw fixed to the top end of the upper sealing sleeve. The limiting screw is perpendicular to the outer wall of the water outlet bellows. A movable limiting rod is inserted into the limiting screw, and the end of the limiting rod abuts against the outer wall of the water outlet bellows.

[0009] In a preferred embodiment, the pneumatic fitting includes a plurality of connecting pipes that penetrate the upper sealing sleeve, the inner end of the connecting pipes extending to the inner side of the upper sealing sleeve and communicating with the interior of the inflation sealing pipe, and the outer ends of the plurality of connecting pipes being connected to a manifold, and a pneumatic pipeline communicating with a pneumatic pressure regulating component being installed on the outer wall of the manifold.

[0010] In a preferred embodiment, the pressure regulating component includes a piston tube connected to the end of a pressure pipeline, a piston block installed inside the piston tube, an adjusting screw tube installed at the end of the piston tube away from the pressure pipeline, a piston rod inserted into the adjusting screw tube extending into the piston tube, and a bearing fitted on the piston block at the end of the piston rod.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] This invention utilizes the matching of the spacing between the inflatable sealing tubes and the protrusions of the corrugated pipes to precisely fill the depressions and achieve a seal without dead angles. The piston-type air pressure regulating component can replenish pressure, ensuring a long-lasting seal without frequent replacement. An inflatable sealing strip and multi-node sealing are added to the outside of the water trap seal to prevent odor and insects. The lower sealing sleeve is detachable, and the rubber hose is flexible, making disassembly and maintenance convenient and suitable for confined spaces. The limiting component and limiting ring prevent longitudinal displacement and ensure a stable seal. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of part of the structure of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Outlet corrugated pipe, 2. Water trap, 3. Threaded connection pipe, 4. Upper sealing sleeve, 5. Mechanical seal ring, 6. Lower sealing sleeve, 7. Rubber hose, 8. Limiting ring, 9. Sealing ring, 10. Inflatable sealing pipe, 11. Limiting screw pipe, 12. Limiting rod, 13. Connecting pipe, 14. Manifold, 15. Pneumatic pipeline, 16. Piston pipe, 17. Piston block, 18. Adjusting screw pipe, 19. Piston rod, 20. Bearing. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0017] As shown in Figure 1-2, a drainage pipe splicing device is installed between the water outlet corrugated pipe 1 of a kitchen sink and the water trap 2 of a drain pipe. It includes a threaded connecting pipe 3 installed at the top of the water trap 2 and an upper sealing sleeve 4 sleeved outside the water outlet corrugated pipe 1. An adjustable sealing element is provided inside the upper sealing sleeve 4. An air pressure fitting is connected to the outer wall of the upper sealing sleeve 4. The air pressure fitting passes through the upper sealing sleeve 4 and communicates with the sealing element. The other end of the air pressure fitting is connected to an air pressure regulating element. The sealing element is inflated inside the upper sealing sleeve 4 by the air pressure fitting and the air pressure regulating element to fill the gap between the upper sealing sleeve 4 and the water outlet corrugated pipe 1. A mechanical sealing ring 5 is fitted at the bottom of the upper sealing sleeve 4. A detachable lower sealing sleeve 6 is fitted outside the threaded connecting pipe 3. A rubber hose 7 is connected between the bottom of the upper sealing sleeve 4 and the top of the lower sealing sleeve through the mechanical sealing ring 5.

[0018] A limiting ring 8 is fixed on the outer wall of the water trap 2 located below the threaded connecting pipe 3. A sealing ring 9 is attached to the top of the limiting ring 8, and the sealing ring 9 is attached to the bottom of the lower sealing sleeve 6.

[0019] Based on the above, the lower part of the device is fitted onto the threaded connecting pipe 3 at the top of the water trap 2 through the lower sealing sleeve 6. The limiting ring 8 on the outer wall of the water trap 2 provides bottom support for the lower sealing sleeve 6. At the same time, the sealing ring 9 at the top of the limiting ring 8 fits tightly with the bottom of the lower sealing sleeve 6, blocking the gap between the top of the water trap 2 and the lower sealing sleeve 6.

[0020] The upper part of the device is fitted onto the outside of the water outlet corrugated pipe 1 through the upper sealing sleeve 4. The limiting member at the top of the upper sealing sleeve 4 achieves longitudinal fixation. The upper sealing sleeve 4 and the lower sealing sleeve 6 are connected to the rubber hose 7 through the mechanical sealing ring 5. The mechanical sealing ring 5 at the bottom of the upper sealing sleeve 4 ensures the connection and sealing with the rubber hose 7. The flexible characteristics of the rubber hose 7 can adapt to the slight deviation of the installation space, while avoiding the interface cracking caused by hard connection.

[0021] The sealing element includes several inflatable sealing tubes 10 fixed on the inner wall of the upper sealing sleeve 4. The inflatable sealing tubes 10 are hollow inside. The spacing between the several inflatable sealing tubes 10 is the same as the spacing of the protrusions on the outer wall of the water outlet corrugated pipe 1. The inflatable sealing tubes 10 fit into the recesses adjacent to the protrusions on the outer wall of the water outlet corrugated pipe 1.

[0022] Based on the above, several inflatable sealing tubes 10 are fixed on the inner wall of the upper sealing sleeve 4, and the spacing of the inflatable sealing tubes 10 is completely consistent with the spacing of the protrusions on the outer wall of the water outlet corrugated pipe 1. In the initial state, the inflatable sealing tubes 10 are attached to the recesses between the protrusions of the corrugated pipe. When the air pressure regulating component is rotated, the gas enters into the hollow inflatable sealing tubes 10 through the air pressure pipeline 15, causing the inflatable sealing tubes 10 to inflate and bulge until they completely fill the gap between the inner wall of the upper sealing sleeve 4 and the recess of the water outlet corrugated pipe 1, forming a tight annular sealing band.

[0023] The upper sealing tube 4 is equipped with a limiting component that longitudinally limits the water outlet corrugated tube 1. The limiting component includes a limiting screw tube 11 fixed to the upper sealing tube 4. The limiting screw tube 11 is perpendicular to the outer wall of the water outlet corrugated tube 1. A movable limiting rod 12 is inserted into the limiting screw tube 11. The end of the limiting rod 12 abuts against the outer wall of the water outlet corrugated tube 1.

[0024] Furthermore, the upper part of the device is fitted onto the outside of the water outlet bellows 1 through the upper sealing sleeve 4, and the limiting member at the top of the upper sealing sleeve 4 achieves longitudinal fixation: the limiting rod 12 inside the limiting screw tube 11 is turned so that its end abuts against the outer wall of the water outlet bellows 1, preventing the bellows from being misaligned due to water flow impact or installation displacement.

[0025] The pneumatic fitting includes several connecting pipes 13 that penetrate the upper sealing pipe 4. The inner end of the connecting pipe 13 extends to the inner side of the upper sealing pipe 4 and communicates with the interior of the inflation sealing pipe 10. The outer ends of the several connecting pipes 13 are connected to a manifold 14. A pneumatic pipeline 15 communicating with a pneumatic regulator is installed on the outer wall of the manifold 14. The pneumatic regulator includes a piston pipe 16 connected to the end of the pneumatic pipeline 15. A piston block 17 is installed inside the piston pipe 16. An adjusting screw pipe 18 is installed at the end of the piston pipe 16 away from the pneumatic pipeline 15. A piston rod 19 extending into the piston pipe 16 is inserted into the adjusting screw pipe 18. A bearing 20 embedded in the piston block 17 is sleeved at the end of the piston rod 19.

[0026] Based on the above, rotate the air pressure regulating component, turn the piston rod 19 in the regulating screw tube 18, push the piston block 17 in the piston tube 16 to move towards the air pressure pipeline 15, and force the gas in the piston tube 16 into the air pressure pipeline 15. The gas enters the manifold 14 through the air pressure pipeline 15, and then flows through several connecting pipes 13 to each inflation sealing tube 10, causing the inflation sealing tube 10 to inflate until it completely fills the gap between the inner wall of the upper sealing sleeve 4 and the recess of the water outlet corrugated pipe 1, forming a tight annular sealing band.

[0027] Based on the above, the wastewater from the kitchen sink enters the rubber hose 7 through the corrugated outlet pipe 1, flows through the rubber hose 7 and the lower sealing sleeve 6 into the water trap 2, and finally flows into the drain pipe. The entire channel has a smooth connection on the inner wall, which does not obstruct the water flow.

[0028] The "physical sealing strip" formed by the inflated air-sealing tube 10 directly blocks the path of odors and insects moving upwards in the water trap 2, making up for the gap defects of traditional plastic wrap wrapping; the sealing ring 9 of the limiting ring 8, the mechanical sealing ring 5 and the rubber hose 7 are connected and sealed, further sealing the gaps between the lower sealing sleeve 6 and the water trap 2, and between the upper and lower sleeves and the rubber hose 7, forming a "double sealing defense line", which is more reliable than simply relying on the "water seal" of the water trap 2.

[0029] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A drainage pipe splicing device, installed between the outlet corrugated pipe of a kitchen sink and the water trap of the drain pipe, characterized in that, The device includes a threaded connecting pipe installed at the top of the water trap and an upper sealing sleeve fitted over the water outlet corrugated pipe. The upper sealing sleeve has an adjustable seal inside. An air pressure fitting is connected to the outer wall of the upper sealing sleeve, passing through the upper sealing sleeve and communicating with the seal. The other end of the air pressure fitting is connected to an air pressure regulating component. The seal inside the upper sealing sleeve is inflated by the air pressure fitting and the air pressure regulating component to fill the gap between the upper sealing sleeve and the water outlet corrugated pipe. A mechanical sealing ring is fitted at the bottom of the upper sealing sleeve. A detachable lower sealing sleeve is fitted over the threaded connecting pipe. A rubber hose is connected between the bottom of the upper sealing sleeve and the top of the lower sealing sleeve through the mechanical sealing ring.

2. The drainage pipe splicing device according to claim 1, characterized in that: A limit ring is fixed on the outer wall of the water trap located below the threaded connection pipe. A sealing ring is attached to the top of the limit ring, and the sealing ring is attached to the bottom end of the lower sealing sleeve.

3. A drainage pipe splicing device according to claim 2, characterized in that: The sealing element includes several inflatable sealing tubes fixed on the inner wall of the upper sealing sleeve. The inflatable sealing tubes are hollow inside. The spacing between the several inflatable sealing tubes is the same as the spacing of the protrusions on the outer wall of the water outlet corrugated pipe. The inflatable sealing tubes fit into the recesses adjacent to the protrusions on the outer wall of the water outlet corrugated pipe.

4. The drainage pipe splicing device according to claim 1, characterized in that: The upper sealing sleeve is equipped with a limiting component for longitudinally limiting the water outlet corrugated pipe. The limiting component includes a limiting screw fixed to the top of the upper sealing sleeve. The limiting screw is perpendicular to the outer wall of the water outlet corrugated pipe. A movable limiting rod is inserted into the limiting screw, and the end of the limiting rod abuts against the outer wall of the water outlet corrugated pipe.

5. A drainage pipe splicing device according to claim 3, characterized in that: The pneumatic fitting includes several connecting pipes that penetrate the upper sealing sleeve. The inner end of the connecting pipe extends to the inner side of the upper sealing sleeve and communicates with the inside of the inflation sealing pipe. The outer ends of the several connecting pipes are connected to a manifold. A pneumatic pipeline communicating with the pneumatic pressure regulating component is installed on the outer wall of the manifold.

6. A drainage pipe splicing device according to claim 5, characterized in that: The air pressure regulating component includes a piston tube connected to the end of the air pressure pipeline, a piston block installed inside the piston tube, an adjusting screw tube installed at the end of the piston tube away from the air pressure pipeline, a piston rod inserted into the adjusting screw tube extending into the piston tube, and a bearing fitted on the piston block at the end of the piston rod.

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