A sewer interface sealing device

Abstract

The utility model relates to sealing device technical field, and disclose a kind of sewer pipe interface sealing device, including sewer drain pipe and sink drain pipe, the inside of sewer drain pipe is provided with auxiliary sealing mechanism, the outside of auxiliary sealing mechanism is provided with auxiliary fixing mechanism.The sewer pipe interface sealing device, by the upper cover plate, connecting rod and lower baffle are inserted into the inside of sewer drain pipe, can form independent area in the space inside sewer drain pipe, and then when the interface of sewer drain pipe is sealed using polyurethane foaming agent, polyurethane foaming agent can be expanded and solidified in the area inside the upper cover plate and the lower baffle, and in the mode of expansion and solidification in the defined area, polyurethane foaming agent can effectively avoid flowing along the pipe wall, effectively prevent the polyurethane foaming agent inside sewer drain pipe from dispersing and expanding, and effectively prevent the sewer drain pipe from being blocked.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, specifically a drainage pipe interface sealing device. Background Technology

[0002] To ensure the sealing of drainage pipe joints and prevent liquid leakage, gas penetration, or foreign object entry, it is usually necessary to seal the drainage pipe joints. For example, expanding sealing materials, such as polyurethane foam, are used. The foam expands and cures to form elastic foam, which fills the gaps and achieves a quick seal.

[0003] In existing technology, the drain pipe inside a household kitchen is usually located below the kitchen sink. After inserting the drain pipe from the bottom of the sink into the kitchen drain pipe, polyurethane foam is usually injected into the drain pipe port to prevent backflow of odors. After the polyurethane foam expands and cures, the joint is sealed to prevent backflow. However, in actual use, the polyurethane foam is in a liquid state before curing. When it is injected into the inner wall of the drain pipe, the polyurethane foam flows down the pipe wall, causing a large amount of expanded polyurethane foam to disperse inside the drain pipe, which can easily cause blockage. Therefore, it is necessary to improve the drain pipe joint sealing device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a drainage pipe interface sealing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drain pipe interface sealing device, comprising a sewer drain pipe and a sink drain pipe, wherein an auxiliary sealing mechanism is provided inside the sewer drain pipe, and an auxiliary fixing mechanism is provided outside the auxiliary sealing mechanism.

[0006] Preferably, the auxiliary sealing mechanism includes an upper cover plate, which is disposed inside the sewer drain pipe. An injection port is fixedly installed on the top of the upper cover plate, a connecting rod is fixedly installed on the bottom of the upper cover plate, and a lower baffle is fixedly installed on the bottom of the connecting rod.

[0007] Preferably, the upper cover plate and the lower baffle plate have holes inside, and the water tank drain pipe passes through the holes inside the upper cover plate and the lower baffle plate.

[0008] Preferably, there are four injection ports, and the four injection ports are evenly distributed on the top of the upper cover plate.

[0009] Preferably, the auxiliary fixing mechanism includes a pad block, which is fixedly installed on the top of the upper cover plate. A threaded rod is installed on the internal thread of the pad block, and an abutment block is rotatably installed on the inner side of the threaded rod. A friction rubber pad is fixedly installed on the inner side of the abutment block.

[0010] Preferably, the auxiliary fixing mechanism is provided in four sets, and the four sets of auxiliary fixing mechanisms are evenly distributed on the outside of the auxiliary sealing mechanism.

[0011] Preferably, the pad has a threaded hole inside, and the threaded rod is threaded into the threaded hole inside the pad.

[0012] Compared with the prior art, the present invention provides a drainage pipe interface sealing device, which has the following advantages:

[0013] 1. This drain pipe interface sealing device, through its auxiliary sealing mechanism, creates an independent area within the drain pipe by inserting the upper cover, connecting rod, and lower baffle into the drain pipe during use. This allows the polyurethane foam to expand and solidify within this area on the inner side of the upper cover and lower baffle, sealing the space between the drain pipe and the sink drain pipe and preventing backflow of odors. Furthermore, the expansion and solidification within a defined area effectively prevents the polyurethane foam from flowing along the pipe wall, thus preventing the dispersed expansion of the polyurethane foam inside the drain pipe and effectively preventing blockages.

[0014] 2. This drain pipe interface sealing device, through the auxiliary fixing mechanism, allows the contact block to be pushed against the friction rubber pad close to the outer wall of the drain pipe by turning the threaded rod during use. This fixes the auxiliary sealing mechanism, preventing it from rotating when the polyurethane foam expands and cures. It also provides long-term fixation of the auxiliary sealing mechanism, improving the structural stability when using polyurethane foam for sealing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0017] Figure 2This is a cross-sectional view of the external structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the external structure of the auxiliary sealing mechanism of this utility model;

[0019] Figure 4 This is an exploded view of the external structure of the auxiliary fixing mechanism of this utility model.

[0020] In the diagram: 1. Sewer drain pipe; 2. Auxiliary sealing mechanism; 21. Top cover plate; 22. Injection port; 23. Connecting rod; 24. Lower baffle; 3. Auxiliary fixing mechanism; 31. Pad block; 32. Threaded rod; 33. Abutment block; 34. Friction rubber pad; 4. Water tank drain pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example 1:

[0024] Please see Figure 1-3 This utility model provides a technical solution: a drain pipe interface sealing device, including a sewer drain pipe 1 and a water tank drain pipe 4, wherein an auxiliary sealing mechanism 2 is provided inside the sewer drain pipe 1, and an auxiliary fixing mechanism 3 is provided outside the auxiliary sealing mechanism 2.

[0025] Furthermore, the auxiliary sealing mechanism 2 includes an upper cover plate 21, which is disposed inside the sewer drain pipe 1. An injection port 22 is fixedly installed on the top of the upper cover plate 21, and a connecting rod 23 is fixedly installed on the bottom of the upper cover plate 21. A lower baffle 24 is fixedly installed on the bottom of the connecting rod 23. Through the auxiliary sealing mechanism 2, the range of polyurethane foam injected can be limited, thereby avoiding uneven distribution caused by the polyurethane foam flowing along the pipe wall. At the same time, by expanding and sealing the space inside the upper cover plate 21 and the lower baffle 24, the interface of the sewer drain pipe 1 can be effectively sealed.

[0026] Furthermore, the upper cover plate 21 and the lower baffle plate 24 have holes inside, and the sink drain pipe 4 is installed through the holes inside the upper cover plate 21 and the lower baffle plate 24. Through the sink drain pipe 4 installed through the holes inside the upper cover plate 21 and the lower baffle plate 24, the sink drain pipe 4 can drain normally. At the same time, the expanding polyurethane foam will wrap the outside of the sink drain pipe 4 to prevent backflow of odor.

[0027] Furthermore, there are four injection ports 22, which are evenly distributed on the top of the upper cover plate 21. Through the four evenly distributed injection ports 22, polyurethane foaming agent can be injected evenly, so that the polyurethane foaming agent can evenly fill the space inside the upper cover plate 21 and the lower baffle 24.

[0028] Please see Figure 4 Furthermore, the auxiliary fixing mechanism 3 includes a pad 31, which is fixedly installed on the top of the upper cover plate 21. A threaded rod 32 is installed on the internal thread of the pad 31. An abutment block 33 is rotatably installed on the inner side of the threaded rod 32. A friction rubber pad 34 is fixedly installed on the inner side of the abutment block 33. Through the auxiliary fixing mechanism 3, the auxiliary sealing mechanism 2 can be supported and fixed, so that it is limited and prevents the polyurethane foaming agent from moving during the foaming and curing period.

[0029] Furthermore, four sets of auxiliary fixing mechanisms 3 are provided, and the four sets of auxiliary fixing mechanisms 3 are evenly distributed on the outside of the auxiliary sealing mechanism 2. The evenly distributed auxiliary fixing mechanisms 3 can increase the stability of fixing the auxiliary sealing mechanism 2.

[0030] Furthermore, the pad 31 has a threaded hole inside, and the threaded rod 32 is threaded into the threaded hole inside the pad 31. By utilizing the threaded hole inside the pad 31, when the threaded rod 32 is rotated, the abutment block 33 can approach the outer wall of the sewer drain pipe 1, so that the friction rubber pad 34 is in contact with the outer wall of the sewer drain pipe 1.

[0031] In actual operation, when this device is used, first insert the upper cover plate 21, connecting rod 23, and lower baffle 24 into the sewer drain pipe 1. At this time, the auxiliary sealing mechanism 2 is placed at the interface of the sewer drain pipe 1 by the support of the pad 31. Then, rotate the threaded rod 32 to move the contact block 33 inward. At this time, the friction rubber pad 34 is in contact with the outer wall of the sewer drain pipe 1, and the auxiliary sealing mechanism 2 is firmly fixed. Then, pass the sink drain pipe 4 through the upper cover plate 21 and lower baffle 24 and enter the sewer drain pipe. Inside 1, polyurethane foam can be injected into the inner side of the upper cover plate 21 and the lower baffle plate 24 through the injection port 22. After the polyurethane foam falls to the top of the lower baffle plate 24, it will gradually expand and seal the gap between the drain pipe 1 and the lower baffle plate 24, preventing the polyurethane foam from flowing to the bottom inner wall of the drain pipe 1. At the same time, the expanding polyurethane foam will wrap around the inside of the drain pipe 4. After the expansion of the polyurethane foam, the inner space of the upper cover plate 21 and the lower baffle plate 24 is filled, and the seal is completed.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A drain pipe interface sealing device, comprising a sewer drain pipe (1) and a sink drain pipe (4), characterized in that: An auxiliary sealing mechanism (2) is provided inside the sewer drain pipe (1), and an auxiliary fixing mechanism (3) is provided on the outside of the auxiliary sealing mechanism (2).

2. The drain pipe interface sealing device according to claim 1, characterized in that: The auxiliary sealing mechanism (2) includes an upper cover plate (21), which is located inside the sewer drain pipe (1). An injection port (22) is fixedly installed on the top of the upper cover plate (21), and a connecting rod (23) is fixedly installed on the bottom of the upper cover plate (21). A lower baffle (24) is fixedly installed on the bottom of the connecting rod (23).

3. A drain pipe interface sealing device according to claim 2, characterized in that: The upper cover plate (21) and the lower baffle plate (24) have holes inside, and the water tank drain pipe (4) is installed through the holes inside the upper cover plate (21) and the lower baffle plate (24).

4. A drain pipe interface sealing device according to claim 2, characterized in that: There are four injection ports (22), and the four injection ports (22) are evenly distributed on the top of the upper cover plate (21).

5. A drain pipe interface sealing device according to claim 1, characterized in that: The auxiliary fixing mechanism (3) includes a pad (31), which is fixedly installed on the top of the upper cover plate (21). A threaded rod (32) is installed inside the pad (31), and an abutment block (33) is rotatably installed on the inner side of the threaded rod (32). A friction rubber pad (34) is fixedly installed on the inner side of the abutment block (33).

6. A drain pipe interface sealing device according to claim 5, characterized in that: The auxiliary fixing mechanism (3) is provided in four sets, and the four sets of auxiliary fixing mechanisms (3) are evenly distributed on the outside of the auxiliary sealing mechanism (2).

7. A drain pipe interface sealing device according to claim 5, characterized in that: The pad (31) has a threaded hole inside, and the threaded rod (32) is threadedly installed inside the threaded hole inside the pad (31).

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