A mounting structure for preventing gas overflow of a sewer pipe

Abstract

The utility model relates to a kind of installation structure for preventing gas overflow of sewer pipe, including first connecting unit, extrusion unit, control unit, second connecting unit and at least one sealing unit.Its advantage is that, using the cooperation between first connecting unit, extrusion unit and control unit, pressure can be applied to first connecting unit and sewer pipe, maintaining a tight connection state, prolonging the service life of the connection part, further ensuring that the connection is gapless, avoiding the problem of odor emission and sewage leakage, protecting the indoor environment fresh and clean;The cooperation between second connecting unit and sealing unit can seal the connection between second connecting unit and drain pipe, effectively prevent sewage from seeping out of this part, provide durable and reliable sealing protection for the connection between drain pipe and sewer pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of installation tools for sewer pipes, and in particular to an installation structure for preventing gas overflow from sewer pipes. Background Technology

[0002] Sewer pipes are a key component of urban infrastructure and building drainage systems, bearing the heavy responsibility of discharging sewage, rainwater, and other liquid waste. They are made from a variety of materials; lightweight and corrosion-resistant PVC pipes are commonly used in homes due to their low cost and easy installation; while urban underground drainage systems often utilize high-pressure-resistant cast iron pipes and flexible PE pipes. Pipe diameters range widely, from small diameters in residential kitchens and bathrooms to large diameters in urban main roads, to accommodate different flow rates. Their shape is mostly circular, allowing for efficient water flow, and the smooth inner wall reduces the accumulation of dirt and grime.

[0003] In existing household systems, drain pipes are typically inserted directly into the sewer system. This process creates gaps at the connection point, providing a pathway for odors from the sewer to escape. These odors can then seep into the room, severely polluting the air, reducing the comfort of the living environment, and potentially affecting health with prolonged exposure. Furthermore, the water pressure fluctuates significantly during drainage. When the pressure is unstable or the drainage volume is large, sewage can easily seep through these gaps. This leaking sewage gradually corrodes the surrounding floor and walls, causing floor warping, mold growth, and peeling wall coatings. This not only affects aesthetics but can also damage the building structure, increasing subsequent repair costs.

[0004] Currently, no effective solution has been proposed to address the issues of odors and sewage overflow caused by gaps in related technologies. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an installation structure for preventing gas overflow from sewer pipes, thereby solving the problem of odors and sewage overflow caused by gaps in related technologies.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An installation structure for preventing gas overflow from sewer pipes, comprising:

[0008] The first connecting unit is disposed inside the sewer pipe and is connected to the sewer pipe.

[0009] An extrusion unit is movably disposed inside the first connecting unit and is used to reciprocate along the axial direction of the first connecting unit to extrude the first connecting unit.

[0010] The control unit is rotatably connected to the first connecting unit and the extrusion unit, and is used to drive the extrusion unit to reciprocate along the axial direction of the first connecting unit.

[0011] The second connecting unit is detachably disposed at the top of the first connecting unit and is connected to the first connecting unit and the drain pipe respectively;

[0012] At least one sealing unit is disposed inside the second connecting unit and abuts against the drain pipe, for sealing the connection between the second connecting unit and the drain pipe.

[0013] In some embodiments, the first connection unit includes:

[0014] A first connecting element is disposed inside the sewer pipe. The squeezing unit and the control unit are disposed inside the first connecting element. The top of the first connecting element is detachably provided with a second connecting unit, which is connected to the second connecting unit and the sewer pipe respectively.

[0015] A first support element is disposed inside the first connecting element and is rotatably connected to the control unit.

[0016] In some embodiments, the first connection unit further includes:

[0017] A first rotating element is disposed through the first supporting element and is rotatably connected to the control unit.

[0018] In some embodiments, the extrusion unit includes:

[0019] An extrusion element is movably disposed inside the first connecting unit and is used to reciprocate along the axial direction of the first connecting unit to extrude the first connecting unit.

[0020] The second support element is disposed inside the extrusion element and is rotatably connected to the control unit.

[0021] In some embodiments, the extrusion unit further includes:

[0022] The second rotating element is disposed at the top of the second support element and is rotatably connected to the control unit;

[0023] A first limiting element is disposed at the bottom end of the second rotating element and is connected to the control unit for limiting connection, thereby preventing the control unit from detaching from the second supporting element.

[0024] In some embodiments, the control unit includes:

[0025] A first control element is rotatably connected to the first connecting unit and the extrusion unit, respectively, and is used to drive the extrusion unit to reciprocate along the axial direction of the first connecting unit.

[0026] In some embodiments, the control unit further includes:

[0027] The second limiting element is disposed at the bottom end of the first control element and is connected to the extrusion unit for limiting connection, thereby preventing the first control element from disengaging from the extrusion unit.

[0028] In some embodiments, the control unit further includes:

[0029] A second control element is disposed at the top of the first control element and connected to the first control element, for driving the first control element to rotate circumferentially along the first control element.

[0030] In some embodiments, the second connection unit includes:

[0031] The second connecting element is detachably disposed at the top of the first connecting unit. The sealing unit is disposed on the inner side of the second connecting element and is connected to the first connecting unit and the drain pipe respectively.

[0032] In some embodiments, the sealing unit includes:

[0033] A sealing element is disposed inside the second connecting unit and abuts against the drain pipe to seal the connection between the second connecting unit and the drain pipe.

[0034] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0035] This utility model discloses an installation structure for preventing gas overflow from sewer pipes. By utilizing the cooperation of a first connecting unit, a pressing unit, and a control unit, pressure is applied to the first connecting unit and the sewer pipe to maintain a tight connection, extending the service life of the connection and further ensuring a seamless connection. This prevents odor emission and sewage leakage, ensuring a fresh and clean indoor environment. Furthermore, by utilizing the cooperation of a second connecting unit and a sealing unit, the connection between the second connecting unit and the drain pipe is sealed, effectively preventing sewage from seeping out and providing a durable and reliable seal for the connection between the drain pipe and the sewer pipe. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of the installation structure according to an embodiment of the present utility model;

[0037] Figure 2 This is a cross-sectional view of the installation structure according to an embodiment of the present utility model;

[0038] Figure 3 This is an exploded view of the installation structure according to an embodiment of the present utility model;

[0039] Figure 4 This is a schematic diagram of the installation structure according to an embodiment of the present utility model;

[0040] Figure 5 This is a cross-sectional view of the first connecting unit according to an embodiment of the present utility model;

[0041] Figure 6 This is a wireframe diagram of the extrusion unit according to an embodiment of the present utility model;

[0042] Figure 7 This is a three-dimensional structural diagram of the control unit according to an embodiment of the present utility model;

[0043] Figure 8 This is a three-dimensional structural schematic diagram of the second connecting unit according to an embodiment of the present utility model;

[0044] Figure 9 This is a three-dimensional structural schematic diagram of the sealing unit according to an embodiment of the present utility model.

[0045] The reference numerals in the accompanying drawings are: 10, first connecting unit; 11, first connecting element; 12, first supporting element; 13, first rotating element;

[0046] 20. Extrusion unit; 21. Extrusion element; 22. Second support element; 23. Second rotating element; 24. First limiting element;

[0047] 30. Control unit; 31. First control element; 32. Second limit element; 33. Second control element;

[0048] 40. Second connecting unit; 41. Second connecting element;

[0049] 50. Sealing unit; 51. Sealing element;

[0050] A. Sewer pipe; B. Drain pipe. Detailed Implementation

[0051] 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.

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0053] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0054] An illustrative embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, an installation structure for preventing gas overflow from a sewer pipe includes a first connecting unit 10, a pressing unit 20, a control unit 30, a second connecting unit 40, and at least one sealing unit 50. The first connecting unit 10 is disposed inside the sewer pipe A and communicates with it. The pressing unit 20 is movably disposed inside the first connecting unit 10 and is used to reciprocate along the axial direction of the first connecting unit 10 to press it. The control unit 30 is rotatably connected to both the first connecting unit 10 and the pressing unit 20, and is used to drive the pressing unit 20 to reciprocate along the axial direction of the first connecting unit 10. The second connecting unit 40 is detachably disposed at the top of the first connecting unit 10 and communicates with both the first connecting unit 10 and the drain pipe B. The sealing unit 50 is disposed inside the second connecting unit 40 and abuts against the drain pipe B, and is used to seal the connection between the second connecting unit 40 and the drain pipe B.

[0055] In some embodiments, there are multiple sealing units 50. The multiple sealing units 50 are arranged at equal intervals along the axial direction of the second connecting unit 40.

[0056] like Figure 5 As shown, the first connecting unit 10 includes a first connecting element 11 and a first supporting element 12. The first connecting element 11 is disposed inside the sewer pipe A, and a squeezing unit 20 and a control unit 30 are disposed inside the first connecting element 11. A second connecting unit 40 is detachably disposed at the top of the first connecting element 11 and communicates with the second connecting unit 40 and the sewer pipe A respectively. The first supporting element 12 is disposed inside the first connecting element 11 and is rotatably connected to the control unit 30.

[0057] In some embodiments, the first connecting element 11 includes a first connecting tube and a second connecting tube. A first supporting element 12 is disposed on the inner side of the first connecting tube and connected to it; the second connecting tube is disposed at the bottom end of the first connecting tube and communicates with it.

[0058] The radial dimension of the second connecting pipe decreases from its top end (near the bottom end of the first connecting pipe) to its bottom end (far from the bottom end of the first connecting pipe).

[0059] The dimensions of the second connecting pipe are matched with those of the first connecting pipe. Generally, the maximum radial dimension of the second connecting pipe is equal to the radial dimension of the first connecting pipe, and the axial dimension of the second connecting pipe is greater than that of the first connecting pipe.

[0060] In some embodiments, the first connecting tube of the first connecting element 11 is made of plastic and the second connecting tube is made of silicone, including but not limited to silicone.

[0061] The cross-section of the first support element 12 is rectangular.

[0062] The dimensions of the first support element 12 are matched with the dimensions of the first connecting element 11. Generally, the length of the first support element 12 is equal to the radial dimension of the inner edge surface of the first connecting pipe, the width of the first support element 12 is less than the radial dimension of the inner edge surface of the first connecting pipe, and the height of the first support element 12 is less than the axial dimension of the first connecting pipe.

[0063] In some of these embodiments, the first support element 12 is fixedly connected to the first connecting element 11, including but not limited to integral molding.

[0064] In some of these embodiments, the first support element 12 is made of plastic.

[0065] In some of these embodiments, the first support element 12 is a first support plate.

[0066] Furthermore, the first connecting unit 10 also includes a first rotating element 13. The first rotating element 13 passes through the first supporting element 12 and is rotatably connected to the control unit 30.

[0067] The cross-section of the first rotating element 13 is circular.

[0068] The dimensions of the first rotating element 13 are matched with the dimensions of the first supporting element 12. Generally, the radial dimension of the first rotating element 13 is smaller than the length and width of the first supporting element 12, and the axial dimension (such as depth) of the first rotating element 13 is equal to the height of the first supporting element 12.

[0069] In some of these embodiments, the first rotating element 13 is a threaded hole.

[0070] like Figure 6 As shown, the extrusion unit 20 includes an extrusion element 21 and a second support element 22. The extrusion element 21 is movably disposed inside the first connecting unit 10 and is used to reciprocate along the axial direction of the first connecting unit 10 to extrude the first connecting unit 10; the second support element 22 is disposed inside the extrusion element 21 and is rotatably connected to the control unit 30.

[0071] Specifically, the extrusion element 21 is movably disposed inside the first connecting element 11.

[0072] More specifically, the extrusion element 21 is movably disposed inside the second connecting tube.

[0073] The extrusion element 21 has a tapered cross-section. Specifically, the radial dimension of the extrusion element 21 decreases from its top end to its bottom end.

[0074] The dimensions of the extrusion element 21 are matched with the dimensions of the first connecting element 11. Generally, the axial dimension of the extrusion element 21 is smaller than the axial dimension of the second connecting tube.

[0075] In some of these embodiments, the extrusion element 21 is made of plastic.

[0076] In some of these embodiments, the extrusion element 21 is an extrusion block.

[0077] The cross-section of the second support element 22 is rectangular.

[0078] The dimensions of the second support element 22 are matched with the dimensions of the extrusion element 21. Generally, the length of the second support element 22 is equal to the radial dimension of the maximum inner edge of the extrusion element 21, the width of the second support element 22 is less than the radial dimension of the minimum inner edge of the extrusion element 21, and the height of the second support element 22 is less than the axial dimension of the extrusion element 21.

[0079] In some of these embodiments, the second support element 22 is fixedly connected to the extrusion element 21, including but not limited to integral molding.

[0080] In some of these embodiments, the second support element 22 is made of plastic.

[0081] In some of these embodiments, the second support element 22 is a second support plate.

[0082] Furthermore, the extrusion unit 20 also includes a second rotating element 23 and a first limiting element 24. The second rotating element 23 is disposed at the top end of the second support element 22 and is rotatably connected to the control unit 30; the first limiting element 24 is disposed at the bottom end of the second rotating element 23 and is limitedly connected to the control unit 30 to prevent the control unit 30 from disengaging from the second support element 22.

[0083] Specifically, the second rotating element 23 corresponds to the first rotating element 13.

[0084] The cross-section of the second rotating element 23 is circular.

[0085] The dimensions of the second rotating element 23 are matched with the dimensions of the second supporting element 22. Generally, the radial dimension of the second rotating element 23 is smaller than the length and width of the second supporting element 22, and the axial dimension of the second rotating element 23 is smaller than the height of the second supporting element 22.

[0086] The dimensions of the second rotating element 23 are matched with the dimensions of the first rotating element 13. Generally, the radial dimension of the second rotating element 23 is equal to the radial dimension of the first rotating element 13.

[0087] In some of these embodiments, the second rotating element 23 is a rotating hole.

[0088] The cross-section of the first limiting element 24 is circular.

[0089] The dimensions of the first limiting element 24 are matched with the dimensions of the second support element 22. Generally, the radial dimension of the first limiting element 24 is smaller than the length and width of the second support element 22, and the axial dimension of the first limiting element 24 is smaller than the height of the second support element 22.

[0090] The dimensions of the first limiting element 24 are matched with the dimensions of the second rotating element 23. Generally, the radial dimension of the first limiting element 24 is larger than the radial dimension of the second rotating element 23.

[0091] The sum of the axial dimensions of the first limiting element 24 and the second rotating element 23 is less than the height of the second supporting element 22.

[0092] In some of these embodiments, the first limiting element 24 is a limiting groove.

[0093] like Figure 7 As shown, the control unit 30 includes a first control element 31. The first control element 31 is rotatably connected to the first connecting unit 10 and the extrusion unit 20, respectively, and is used to drive the extrusion unit 20 to reciprocate along the axial direction of the first connecting unit 10.

[0094] Specifically, the first control element 31 is threadedly connected to the first rotating element 13 and rotatably connected to the second rotating element 23.

[0095] The cross-section of the first control element 31 is circular.

[0096] The dimensions of the first control element 31 are matched with the dimensions of the first rotating element 13 (second rotating element 23). Generally, the radial dimension of the first control element 31 is equal to the radial dimension of the first rotating element 13 (second rotating element 23), and the axial dimension of the first control element 31 is greater than the axial dimension of the first rotating element 13 (second rotating element 23).

[0097] In some of these embodiments, the first control element 31 is made of plastic.

[0098] In some of these embodiments, the first control element 31 is a control screw.

[0099] Furthermore, the control unit 30 also includes a second limiting element 32. The second limiting element 32 is disposed at the bottom end of the first control element 31 and is limitedly connected to the extrusion unit 20 to prevent the first control element 31 from disengaging from the extrusion unit 20.

[0100] Specifically, the second limiting element 32 is rotatably connected to the first limiting element 24.

[0101] The cross-section of the second limiting element 32 is circular.

[0102] The dimensions of the second limiting element 32 are matched with the dimensions of the first control element 31. Generally, the radial dimension of the second limiting element 32 is larger than the radial dimension of the first control element 31, and the axial dimension of the second limiting element 32 is smaller than the axial dimension of the first control element 31.

[0103] The dimensions of the second limiting element 32 are matched with the dimensions of the first limiting element 24. Generally, the radial dimension of the second limiting element 32 is equal to the radial dimension of the first limiting element 24, and the axial dimension of the second limiting element 32 is equal to the axial dimension of the first limiting element 24.

[0104] In some embodiments, the second limiting element 32 is fixedly connected to the first control element 31, including but not limited to being integrally formed.

[0105] In some of these embodiments, the second limiting element 32 is made of plastic.

[0106] In some of these embodiments, the second limiting element 32 is a limiting plate.

[0107] Furthermore, the control unit 30 also includes a second control element 33. The second control element 33 is disposed at the top of the first control element 31 and connected to the first control element 31, and is used to drive the first control element 31 to rotate circumferentially along the first control element 31.

[0108] Specifically, the second control element 33 is disposed inside the first connecting element 11.

[0109] More specifically, the second control element 33 is disposed inside the first connecting tube.

[0110] The cross-section of the second control element 33 is circular.

[0111] The dimensions of the second control element 33 are matched with the dimensions of the first control element 31. Generally, the radial dimension of the second control element 33 is larger than the radial dimension of the first control element 31, and the axial dimension of the second control element 33 is smaller than the axial dimension of the first control element 31.

[0112] The dimensions of the second control element 33 are matched with the dimensions of the first connecting element 11. Generally, the radial dimension of the second control element 33 is smaller than the radial dimension of the inner edge surface of the first connecting tube, and the axial dimension of the second control element 33 is smaller than the axial dimension of the first connecting element 11.

[0113] In some embodiments, the second control element 33 is fixedly connected to the first control element 31, including but not limited to being integrally formed.

[0114] In some of these embodiments, the second control element 33 is made of plastic.

[0115] In some of these embodiments, the second control element 33 is an operation panel.

[0116] like Figure 8 As shown, the second connecting unit 40 includes a second connecting element 41. The second connecting element 41 is detachably disposed at the top of the first connecting unit 10, and a sealing unit 50 is disposed on the inner side of the second connecting element 41, and is connected to the first connecting unit 10 and the drain pipe B respectively.

[0117] Specifically, the second connecting element 41 is disposed at the top of the first connecting element 11 and is threadedly connected to the first connecting element 11.

[0118] More specifically, the second connecting element 41 is disposed at the top end of the first connecting tube and is threadedly connected to the first connecting tube.

[0119] The second connecting element 41 has a hollow structure.

[0120] The dimensions of the second connecting element 41 are matched with the dimensions of the first connecting element 11. Generally, the radial dimension of the inner edge surface of the second connecting element 41 is equal to the radial dimension of the outer edge surface of the first connecting tube, and the axial dimension of the second connecting element 41 is greater than the axial dimension of the first connecting tube.

[0121] In some of these embodiments, the second connecting element 41 is made of plastic.

[0122] In some of these embodiments, the second connecting element 41 is a third connecting tube.

[0123] like Figure 9 As shown, the sealing unit 50 includes a sealing element 51. The sealing element 51 is disposed inside the second connecting unit 40 and abuts against the drain pipe B, and is used to seal the connection between the second connecting unit 40 and the drain pipe B.

[0124] Specifically, the sealing element 51 is disposed inside the second connecting element 41.

[0125] The sealing element 51 is a hollow element.

[0126] The dimensions of the sealing element 51 are matched with the dimensions of the second connecting element 41. Generally, the radial dimension of the outer edge of the sealing element 51 is equal to the radial dimension of the inner edge of the second connecting element 41, and the axial dimension of the sealing element 51 is smaller than the axial dimension of the second connecting element 41.

[0127] In some embodiments, the sealing element 51 is fixedly connected to the second connecting element 41, including but not limited to a thermoplastic connection.

[0128] In some of these embodiments, the sealing element 51 is made of rubber.

[0129] In some of these embodiments, the sealing element 51 is a sealing gasket.

[0130] The method of using this utility model is as follows:

[0131] (a) Installing the first connecting element 11

[0132] Place the first connecting element 11 into the sewer pipe A, and push the first connecting element 11 downwards so that it gradually moves into the sewer pipe A;

[0133] Twist the second control element 33 so that it drives the first control element 31 to rotate along the axial direction of the first rotating element 13 and move in the circumferential direction of the first rotating element 13 toward the extrusion element 21.

[0134] The first control element 31 drives the squeezing element 21 to move accordingly until it abuts against the first connecting element 11, thereby causing the first connecting element 11 to come into contact with the sewer pipe A.

[0135] (ii) Place the second connecting element 41 in the drain pipe B;

[0136] During the process, the drain pipe B passes through the sealing element 51 and comes into contact with the sealing element 51.

[0137] (III) Connection Operation

[0138] Connect the second connecting element 41, which is equipped with drain pipe B, to the first connecting element 11, which is equipped with sewer pipe A, by threading until it is tightened.

[0139] The advantages of this invention are that by utilizing the cooperation between the first connecting unit, the squeezing unit, and the control unit, pressure can be applied to the first connecting unit and the sewer pipe to maintain a tight connection, extend the service life of the connection, further ensure that the connection is seamless, avoid odor emission and sewage leakage, and ensure a fresh and clean indoor environment; by utilizing the cooperation between the second connecting unit and the sealing unit, the connection between the second connecting unit and the drain pipe can be sealed, effectively preventing sewage from seeping out from this part, and providing a durable and reliable sealing guarantee for the connection between the drain pipe and the sewer pipe.

[0140] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An installation structure for preventing gas overflow from sewer pipes, characterized in that, include: The first connecting unit (10) is disposed on the inner side of the sewer pipe and is connected to the sewer pipe; The extrusion unit (20) is movably disposed inside the first connecting unit (10) and is used to reciprocate along the axial direction of the first connecting unit (10) to extrude the first connecting unit (10). The control unit (30) is rotatably connected to the first connecting unit (10) and the extrusion unit (20) respectively, and is used to drive the extrusion unit (20) to reciprocate along the axial direction of the first connecting unit (10); The second connecting unit (40) is detachably disposed on the top of the first connecting unit (10) and is connected to the first connecting unit (10) and the drain pipe respectively; At least one sealing unit (50) is disposed inside the second connecting unit (40) and abuts against the drain pipe, for sealing the connection between the second connecting unit (40) and the drain pipe.

2. The installation structure according to claim 1, characterized in that, The first connection unit (10) includes: The first connecting element (11) is disposed on the inner side of the sewer pipe. The squeezing unit (20) and the control unit (30) are disposed on the inner side of the first connecting element (11). The top end of the first connecting element (11) is detachably provided with the second connecting unit (40) and is connected to the second connecting unit (40) and the sewer pipe respectively. The first support element (12) is disposed inside the first connecting element (11) and is rotatably connected to the control unit (30).

3. The installation structure according to claim 2, characterized in that, The first connection unit (10) further includes: The first rotating element (13) passes through the first support element (12) and is rotatably connected to the control unit (30).

4. The installation structure according to claim 1, characterized in that, The extrusion unit (20) includes: The extrusion element (21) is movably disposed inside the first connecting unit (10) and is used to reciprocate along the axial direction of the first connecting unit (10) to extrude the first connecting unit (10). The second support element (22) is disposed inside the extrusion element (21) and is rotatably connected to the control unit (30).

5. The installation structure according to claim 4, characterized in that, The extrusion unit (20) further includes: The second rotating element (23) is disposed at the top of the second support element (22) and is rotatably connected to the control unit (30); The first limiting element (24) is disposed at the bottom end of the second rotating element (23) and is limitedly connected to the control unit (30) to prevent the control unit (30) from detaching from the second support element (22).

6. The installation structure according to claim 1, characterized in that, The control unit (30) includes: The first control element (31) is rotatably connected to the first connecting unit (10) and the extrusion unit (20) respectively, and is used to drive the extrusion unit (20) to reciprocate along the axial direction of the first connecting unit (10).

7. The installation structure according to claim 6, characterized in that, The control unit (30) also includes: The second limiting element (32) is disposed at the bottom end of the first control element (31) and is limitedly connected to the extrusion unit (20) to prevent the first control element (31) from disengaging from the extrusion unit (20).

8. The installation structure according to claim 7, characterized in that, The control unit (30) also includes: The second control element (33) is disposed at the top of the first control element (31) and connected to the first control element (31), and is used to drive the first control element (31) to rotate around the first control element (31).

9. The installation structure according to claim 1, characterized in that, The second connection unit (40) includes: The second connecting element (41) is detachably disposed at the top of the first connecting unit (10). The sealing unit (50) is disposed on the inner side of the second connecting element (41) and is connected to the first connecting unit (10) and the drain pipe respectively.

10. The installation structure according to claim 1, characterized in that, The sealing unit (50) includes: A sealing element (51) is disposed on the inner side of the second connecting unit (40) and abuts against the drain pipe, for sealing the connection between the second connecting unit (40) and the drain pipe.

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