Closestool and blow-off pipe sealing connection device

Abstract

The utility model belongs to the technical field of toilet bowl installation accessories, particularly relates to a sealing connection device for a toilet bowl and a blow-off pipe, and solves the problem that a relatively low installation space between the bottom of the toilet bowl and the installation ground cannot be adapted. The sealing connection device for the closestool and the blow-off pipe comprises a tubular upper installation part used for being connected with a water outlet in the bottom of the closestool in a sealing mode and a tubular lower installation part used for being connected with the blow-off pipe in a sealing mode. The upper mounting part is inserted into the lower mounting part, and the upper mounting part and the lower mounting part are movably connected in the axial direction; a circumferential sealing connection structure is arranged between the upper mounting part and the lower mounting part; the upper end of the upper mounting part is provided with a concave first sinking part, and the first sinking part is provided with a containing space used for containing a water outlet in the bottom of a closestool; a concave second sinking part is arranged at the upper end of the lower mounting part; and the second sinking part is provided with an accommodating space for accommodating the first sinking part. The effect that the height is very small after the upper installation part and the lower installation part are matched in an inserted mode is achieved, and the device can adapt to a low installation space.

Description

Technical Field

[0001] This utility model belongs to the technical field of toilet installation accessories, and specifically relates to a sealing connection device between a toilet and a sewage pipe. Background Technology

[0002] During toilet installation, the water outlet at the bottom of the toilet is connected to the drain pipe via a flange to prevent odors and sewage from overflowing and to ensure that sewage is discharged smoothly.

[0003] For ease of installation, some connection flanges are designed as separate units, including a toilet connection for connecting to the bottom outlet of the toilet, and a drain pipe connection for inserting the drain pipe and resting on the top or outside of the mounting surface.

[0004] In actual installation, the distance between the bottom of the toilet and the installation surface is uncertain due to differences in toilet models and other factors. However, in most existing connection flanges, even if the entire connection section of the toilet is inserted into the drain pipe connection section, it still needs to be at a considerable height above the installation surface. This makes it unsuitable for installations with limited space between the bottom of the toilet and the installation surface, especially for installations with low ceilings. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a sealing connection device between a toilet and a sewage pipe.

[0006] To achieve the innovative objectives of this utility model, the following technical solutions can be used:

[0007] A toilet and sewage pipe sealing connection device includes an upper mounting part in the shape of a tube for sealing connection with the water outlet at the bottom of the toilet, and a lower mounting part in the shape of a tube for sealing connection with the sewage pipe.

[0008] The upper mounting part is inserted into the lower mounting part and the two are axially movable. A circumferential sealing connection structure is provided between the upper mounting part and the lower mounting part.

[0009] The upper end of the upper mounting part is provided with a recessed first recessed part, and the first recessed part has a receiving space for accommodating the water outlet at the bottom of the toilet.

[0010] The lower mounting portion has a recessed second recessed portion at its upper end, and the second recessed portion has a receiving space for accommodating the first recessed portion.

[0011] This utility model's connecting device is used to connect the toilet's bottom outlet and the drain pipe. Specifically, it achieves a seal from the toilet's bottom outlet to the upper mounting part, from the upper mounting part to the lower mounting part, and from the lower mounting part to the drain pipe, thus achieving a complete seal from the toilet's bottom outlet to the drain pipe, effectively preventing odor or sewage backflow. When the upper mounting part is inserted into the lower mounting part, due to the presence of the first recessed part, the toilet's bottom outlet is enclosed by the first recessed part, which in turn is enclosed by the second recessed part. In extreme cases, the top of the upper mounting part can fit against the bottom of the toilet, the top of the lower mounting part can fit against the back of the top of the upper mounting part, and the back of the top of the lower mounting part can fit against the drain pipe. This effectively utilizes the space at the bottom of the toilet, allowing installation to be completed even when the height difference H between the lowest point of the toilet's bottom outlet and the lowest point of the toilet's outer perimeter is very small. Furthermore, the upper and lower mounting parts are connected by a circumferential sealing connection structure, which allows the upper and lower mounting parts to rotate relative to each other circumferentially while ensuring a good seal, making it easy to adjust the orientation angle of the toilet later.

[0012] In the above-mentioned toilet and sewage pipe sealing connection device, the upper mounting part and the bottom water outlet of the toilet are connected by sealing putty. The upper mounting part includes a connecting section for sealing the connection with the bottom water outlet of the toilet by putty and an insertion section for axially moving connection with the lower mounting part. The outer diameter of the connecting section is larger than that of the insertion section.

[0013] The toilet bowl has a concave bottom surface on its outer perimeter, and the water outlet is located on this surface. Specifically, it can be a downward-protruding tubular shape, but the lowest point of the water outlet must not be lower than the lowest point of the outer perimeter of the toilet bowl. Alternatively, the water outlet can be an opening flush with the bottom surface, i.e., H is greater than or equal to 0, which is common knowledge. The upper section of the upper mounting part is a connecting section, and the lower section is an insertion section. Sealing putty is distributed around the upper mounting part. Simultaneously, the sealing putty contacts the radially outer surface and / or the bottom end face of the toilet bowl's water outlet, achieving a reliable circumferential seal. Furthermore, the putty has a certain degree of plasticity, allowing it to adapt to toilet bowl water outlets of different outer diameters within a certain range.

[0014] In the above-mentioned toilet and sewage pipe sealing connection device, the first sinking part is located in the connecting section, the side wall of the first sinking part is parallel to the axis of the upper mounting part, and the top of the first sinking part is also provided with a flange.

[0015] A first recessed section is coaxially arranged within the connecting section, forming an annular step with the stepped surface facing upwards. Sealing putty is placed within this first recessed section, and the toilet's bottom outlet extends into it, compressing the sealing putty to achieve a reliable circumferential seal. The putty is filled between the first recessed section and the outer side of the toilet's bottom outlet, increasing the adhesive strength. Furthermore, the vertical sidewalls of the first recessed section ensure that the supporting force of the sidewalls on the putty is perpendicular to the toilet's bottom outlet, preventing excessive extrusion of the putty from either the top or bottom. Additionally, the flange at the upper end of the first recessed section connects to the bottom surface of the toilet, and putty can also be applied to the top surface of this flange to further improve the sealing effect.

[0016] In the above-mentioned toilet and sewage pipe sealing connection device, the circumferential sealing connection structure includes a circumferential sealing ring disposed on the outside of the insertion section, and the outside of the insertion section is provided with a sealing ring limiting rib.

[0017] The cross-section of the circumferential sealing ring can be U-shaped or E-shaped. The multi-layer structure is beneficial to improving the sealing effect. The sealing ring limiting ribs are radially protruding and circumferentially distributed on the outer wall of the insertion section for installation and limiting of the circumferential sealing ring.

[0018] In the above-mentioned toilet and sewage pipe sealing connection device, the lower mounting part includes a connecting pipe and a mounting bracket set on the top of the connecting pipe. The bottom of the mounting bracket is provided with an end face sealing structure that can achieve sealing of the end face of the sewage pipe when the mounting bracket is in contact with the sewage pipe.

[0019] The connecting pipe of the lower mounting part is inserted into the sewage pipe. The mounting platform is placed on the installation ground outside the sewage pipe and is supported upwards. The end face sealing structure is sandwiched between the bottom surface of the mounting platform and the installation ground to ensure the sealing between the lower mounting part and the sewage pipe.

[0020] In the above-mentioned toilet and sewage pipe sealing connection device, the end face sealing structure is a sealing putty or sealing gasket set at the bottom of the mounting bracket.

[0021] Sealing putty or gaskets are arranged in a ring between the bottom of the mounting platform and the installation ground to ensure a tight seal.

[0022] In the above-mentioned toilet and sewage pipe sealing connection device, the second recessed part is located at the end of the connecting pipe near the mounting plate, and the outer diameter of the second recessed part is larger than that of the connecting pipe.

[0023] The second recessed part is located on the radial inner side of the mounting platform, which is equivalent to forming an annular step with the stepped surface facing upward. The second recessed part is located below the first recessed part, and its inner diameter is slightly larger than the outer diameter of the first recessed part, which is used to make way for the entry of the first recessed part. Moreover, the distance between the inner bottom surface of the second recessed part and the top surface of the mounting platform is greater than or equal to the distance between the outer bottom surface of the first recessed part and its flange bottom surface.

[0024] In the aforementioned toilet and sewage pipe sealing connection device, a lower sealing ring is provided on the outer side of the lower mounting part, and a positioning rib for the lower sealing ring is provided on the outer side of the lower mounting part.

[0025] The lower sealing ring is tightly fitted onto the mounting tube of the lower mounting part, and is axially limited by the positioning rib of the lower sealing ring, which further improves the sealing effect between the lower mounting part and the sewage pipe.

[0026] In the aforementioned toilet and sewage pipe sealing connection device, the bottom of the lower mounting part is also provided with a flip-top structure.

[0027] The flip-top structure has an elastic tendency to close the lower opening of the mounting section. It can be closed when not in use to prevent odors, sewage or flying insects from escaping, and can adaptively flip downward to open the lower opening when drainage is needed.

[0028] In the aforementioned toilet and sewage pipe sealing connection device, the flip-top structure includes a flip-top that is rotatably connected to the lower end of the lower mounting part via a connecting seat. The connecting seat is provided with an elastic structure that causes the flip-top to have a continuous tendency to close the outlet of the lower mounting part.

[0029] The flip cover is mounted on the connecting seat and tends to close the lower opening of the lower mounting part under the action of the elastic structure. The elastic structure can be a spring or a torsion spring.

[0030] Compared with the prior art, the present invention has the following main advantages:

[0031] 1. This connecting device achieves a seal from the toilet's bottom outlet to the upper mounting part, from the upper mounting part to the lower mounting part, and from the lower mounting part to the drain pipe, thus achieving a complete seal from the toilet's bottom outlet to the drain pipe, effectively preventing odor or sewage backflow. When the upper mounting part is inserted into the lower mounting part, due to the presence of the first recessed part, the toilet's bottom outlet is enclosed by the first recessed part, which in turn is enclosed by the second recessed part. In extreme cases, the top of the upper mounting part can fit against the bottom of the toilet, the top of the lower mounting part against the back of the top of the upper mounting part, and the back of the top of the lower mounting part against the drain pipe. This effectively utilizes the space at the bottom of the toilet, allowing installation to be completed even with a very small height difference H between the toilet's bottom outlet and the outer perimeter of the toilet bottom. Furthermore, the upper and lower mounting parts are connected by a circumferential sealing connection structure, allowing them to rotate circumferentially relative to each other while ensuring a good seal, facilitating subsequent adjustment of the toilet's orientation angle.

[0032] 2. The sealing putty is arranged in a ring inside the upper mounting part. At the same time, the sealing putty contacts the radial outer side of the toilet bottom outlet and / or the bottom end face to achieve a reliable circumferential seal. Moreover, the putty has a certain degree of plasticity and can adapt to toilet bottom outlets with different outer diameters within a certain range.

[0033] 3. The putty is wrapped between the first recessed part and the outside of the toilet bottom outlet to improve the bonding strength.

[0034] 4. The connecting pipe of the lower mounting part is inserted into the sewage pipe. The mounting platform is placed on the installation ground outside the sewage pipe and is supported upwards. The end face sealing structure is clamped between the bottom surface of the mounting platform and the installation ground to ensure the sealing between the lower mounting part and the sewage pipe.

[0035] 5. The flip-top structure has an elastic tendency to close the lower opening of the mounting section. It can be closed when not in use to prevent odors, sewage or flying insects from escaping. When drainage is required, it can adaptively flip downward to open the lower opening. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure provided by this utility model;

[0037] Figure 2 This is a cross-sectional view provided by this utility model (the upper mounting part is not fully inserted into the lower mounting part).

[0038] Figure 3 This is a cross-sectional view provided by this utility model (the upper mounting part is fully inserted into the lower mounting part).

[0039] Figure 4 This is a schematic diagram of the lower mounting part provided by this utility model;

[0040] Figure 5 This is a schematic diagram of the upper mounting part provided by this utility model;

[0041] Figure 6 This utility model provides Figure 2 Installation status diagram (H>0);

[0042] Figure 7 This utility model provides Figure 3 Installation status diagram (H=0).

[0043] In the diagram, the components are: 1. Toilet bottom outlet; 2. Upper mounting part; 3. Drain pipe; 4. Lower mounting part; 5. Circumferential sealing connection structure; 6. First recessed part; 7. Second recessed part; 8. Sealing putty; 9. Connecting section; 10. Insertion section; 11. Flanged edge; 12. Circumferential sealing ring; 13. Sealing ring limiting rib; 14. Connecting pipe; 15. Hanging platform; 16. End face sealing structure; 17. Lower sealing ring; 18. Lower sealing ring positioning rib; 19. Flip-top structure; 20. Connecting seat; 21. Flip-top; 22. Toilet bottom perimeter; 22. Height difference H between the lowest point of the toilet bottom outlet and the lowest point of the toilet bottom perimeter. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] Specific implementation examples Figure 1-7 As shown, this toilet and sewage pipe sealing connection device includes a tubular upper mounting part 2 for sealing connection with the toilet bottom outlet 1, and a tubular lower mounting part 4 for sealing connection with the sewage pipe 3; the upper mounting part 2 is inserted into the lower mounting part 4 and the two are axially movable; a circumferential sealing connection structure 5 is provided between the upper mounting part 2 and the lower mounting part 4; the upper end of the upper mounting part 2 is provided with a recessed first recessed part 6, which has a receiving space for accommodating the toilet bottom outlet 1; the upper end of the lower mounting part 4 is provided with a recessed second recessed part 7, which has a receiving space for accommodating the first recessed part 6.

[0046] Specifically, this connecting device can achieve a seal from the toilet bottom outlet 1 to the upper mounting part 2, a seal from the upper mounting part 2 to the lower mounting part 4, and a seal from the lower mounting part 4 to the drain pipe 3, thereby achieving a complete seal from the toilet bottom outlet 1 to the drain pipe 3, effectively preventing odor or sewage backflow. When the upper mounting part 2 is inserted into the lower mounting part 4, due to the presence of the first recessed part 6, the toilet bottom outlet 1 is covered by the first recessed part 6, and the first recessed part 6 is covered by the second recessed part 7. In extreme cases (see...), Figure 3 , Figure 7 The upper mounting part 2 can be fitted to the bottom of the toilet, the lower mounting part 4 can be fitted to the back of the top of the upper mounting part 2, and the back of the top of the lower mounting part 4 can be fitted to the drain pipe 3. This effectively utilizes the space at the bottom of the toilet, allowing installation to be completed even when the height difference H between the lowest point of the toilet bottom outlet 1 and the lowest point of the outer perimeter 22 of the toilet bottom is very small (or even H=0). The upper mounting part 2 and the lower mounting part 4 are connected by a circumferential sealing connection structure 5, which allows the upper mounting part 2 and the lower mounting part 4 to rotate circumferentially relative to each other while ensuring a good seal, enabling subsequent fine-tuning of the toilet's orientation angle.

[0047] like Figure 1 , 2 As shown in Figures 3, 5, 6, and 7, the upper mounting part 2 is connected to the toilet bottom outlet 1 by a sealing putty 8. The upper mounting part 2 includes a connecting section 9 for sealing the connection with the toilet bottom outlet 1 by the putty and an insertion section 10 for axially movably connecting with the lower mounting part 4. The outer diameter of the connecting section 9 is larger than that of the insertion section 10. The first recessed part 6 is located inside the connecting section 9. The side wall of the first recessed part 6 is parallel to the axis of the upper mounting part 2, and the top of the first recessed part 6 is also provided with a flange 11.

[0048] Specifically, the sealing putty 8 is continuously distributed circumferentially within the first recessed portion 6. The toilet's bottom outlet 1 extends into the first recessed portion 6, and its radially outer surface and bottom end face are pressed against the sealing putty 8, achieving a reliable circumferential seal and improving the bonding strength. Furthermore, the vertical sidewalls of the first recessed portion 6 ensure that the supporting force of the sidewalls on the putty is perpendicular to the toilet's bottom outlet 1, preventing excessive extrusion of the putty from the top or bottom. In addition, the flange 11 at the upper end of the first recessed portion 6 connects to the bottom surface of the toilet, and the sealing putty 8 can also be applied to the top surface of this flange 11, further enhancing the sealing effect.

[0049] In this embodiment, the circumferential sealing connection structure 5 includes a circumferential sealing ring 12 disposed on the outside of the insertion section 10, and a sealing ring limiting rib 13 is provided on the outside of the insertion section 10. The cross-section of the circumferential sealing ring 12 is U-shaped, and the multi-layer structure is beneficial to improving the sealing effect. The sealing ring limiting rib 13 is radially protruding and circumferentially distributed on the outer wall of the insertion section 10 for limiting the installation of the circumferential sealing ring 12.

[0050] like Figure 1 , 2 As shown in Figures 3, 4, 6, and 7, the lower mounting part 4 includes a connecting pipe 14 and a mounting platform 15 disposed on the top of the connecting pipe 14. The bottom of the mounting platform 15 is provided with an end-face sealing structure 16 that can seal the end face of the drain pipe 3 when the mounting platform 15 is in contact with the drain pipe 3. The end-face sealing structure 16 is a sealing putty 8 disposed at the bottom of the mounting platform 15. The second recessed part 7 is located at the end of the connecting pipe 14 near the mounting platform 15, and the outer diameter of the second recessed part 7 is larger than that of the connecting pipe 14.

[0051] Specifically, the connecting pipe 14 of the lower mounting part 4 extends into the drain pipe 3, and the mounting platform 15 rests on the installation ground around the drain pipe 3, being supported upwards. The sealing putty 8 of the end face sealing structure 16 is pressed between the bottom surface of the mounting platform 15 and the installation ground, ensuring the sealing between the lower mounting part 4 and the drain pipe 3. The second recessed part 7 is located radially inside the mounting platform 15, forming an annular step with the stepped surface facing upwards. The second recessed part 7 is located below the first recessed part 6, and its inner diameter is slightly larger than the outer diameter of the first recessed part 6. At the same time, the distance between the inner bottom surface of the second recessed part 7 and the top surface of the mounting platform 15 is greater than the distance between the outer bottom surface of the first recessed part 6 and the bottom surface of its flange 11, ensuring the clearance effect for the entry of the first recessed part 6.

[0052] In this embodiment, a lower sealing ring 17 is also provided on the outer side of the lower mounting part 4, and a lower sealing ring positioning rib 18 is provided on the outer side of the lower mounting part 4. The lower sealing ring 17 is tightly fitted onto the mounting tube of the lower mounting part 4, and is axially limited by the lower sealing ring positioning rib 18, which further improves the sealing effect between the lower mounting part 4 and the drain pipe 3.

[0053] As an optimization of this embodiment, a flip cover structure 19 is also provided at the bottom of the lower mounting part 4. The flip cover structure 19 includes a flip cover 21 that is rotatably connected to the lower end of the lower mounting part 4 via a connecting seat 20. The connecting seat 20 is provided with a torsion spring (not specifically shown in the figure) that causes the flip cover 21 to have a tendency to continuously close the lower end outlet of the lower mounting part 4.

[0054] Specifically, the flip cover structure 19 has an elastic tendency to close the lower opening of the lower mounting portion 4, which can be closed when not in use to prevent odors, sewage or flying insects from escaping, and can adaptively flip downward to open the lower opening when drainage is required. The flip cover 21 of the flip cover structure 19 is provided on the connecting seat 20 and has a tendency to close the lower opening of the lower mounting portion 4 under the action of a torsion spring.

[0055] Specific working principle: During installation, sealant 8 is laid in the first recessed part 6 of the upper mounting part 2 and on the top surface of the flange 11. Then, the first recessed part 6 is aligned and fitted onto the toilet bottom outlet 1. The radial outer side, bottom end face, and toilet bottom surface around the outlet 1 are all in contact with the sealant 8. In addition, sealant 8 is laid on the bottom surface of the mounting bracket 15 of the lower mounting part 4. Then, the connecting pipe 14 is aligned and inserted into the drain pipe 3 until the mounting bracket 15 and the installation ground are in contact with the sealant 8, and the lower sealing ring 17 contacts the inner wall of the drain pipe 3. Finally, the toilet is moved so that the upper mounting part 2 at the bottom is aligned and inserted into the lower mounting part 4. The connecting section 9 of the upper mounting part 2 extends into the connecting pipe 14 of the lower mounting part 4. The circumferential sealing ring 12 contacts the inner wall of the connecting pipe 14. The first recessed part 6 enters the second recessed part 7, and the outer periphery 22 of the toilet bottom touches the ground. The initial installation is completed. When it is necessary to fine-tune the orientation angle of the toilet, the toilet can be rotated directly, and the upper mounting part 2 connected to the toilet will rotate relative to the lower mounting part 4. However, the circumferential sealing ring 12 will always maintain good sealing contact with the outer wall of the upper mounting part 2 and the inner wall of the lower mounting part 4.

[0056] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A sealing connection device between a toilet and a drain pipe, characterized in that: It includes an upper mounting part (2) in the shape of a tube for sealing connection with the water outlet (1) at the bottom of the toilet, and a lower mounting part (4) in the shape of a tube for sealing connection with the drain pipe (3). The upper mounting part (2) is inserted into the lower mounting part (4) and the two are axially connected. A circumferential sealing connection structure (5) is provided between the upper mounting part (2) and the lower mounting part (4). The upper mounting part (2) is provided with a recessed first sinking part (6) at its upper end, and the first sinking part (6) has a accommodating space for accommodating the bottom water outlet (1) of the toilet. The lower mounting part (4) has a recessed second recessed part (7) at its upper end, and the second recessed part (7) has a receiving space for accommodating the first recessed part (6).

2. The toilet and sewage pipe sealing connection device according to claim 1, characterized in that: The upper mounting part (2) is connected to the toilet bottom outlet (1) by sealing putty (8). The upper mounting part (2) includes a connecting section (9) for sealing connection with the toilet bottom outlet (1) by putty and an insertion section (10) for axially moving connection with the lower mounting part (4). The outer diameter of the connecting section (9) is larger than that of the insertion section (10).

3. The toilet and sewage pipe sealing connection device according to claim 2, characterized in that: The first sunken part (6) is located inside the connecting section (9). The side wall of the first sunken part (6) is parallel to the axis of the upper mounting part (2). The top of the first sunken part (6) is also provided with a flange (11).

4. The toilet and sewage pipe sealing connection device according to claim 2, characterized in that: The circumferential sealing connection structure (5) includes a circumferential sealing ring (12) disposed on the outside of the insertion section (10), and the outside of the insertion section (10) is provided with a sealing ring limiting rib (13).

5. The toilet and sewage pipe sealing connection device according to claim 1, characterized in that: The lower mounting part (4) includes a connecting pipe (14) and a mounting platform (15) set on the top of the connecting pipe (14). The bottom of the mounting platform (15) is provided with an end face sealing structure (16) that can seal the end face of the drain pipe (3) when the mounting platform (15) is in contact with the drain pipe (3).

6. The toilet and sewage pipe sealing connection device according to claim 5, characterized in that: The end face sealing structure (16) is a sealing putty (8) or a sealing gasket set at the bottom of the mounting plate (15).

7. The toilet and sewage pipe sealing connection device according to claim 5, characterized in that: The second recessed part (7) is located at the end of the connecting pipe (14) near the hanging platform (15), and the outer diameter of the second recessed part (7) is larger than that of the connecting pipe (14).

8. The toilet and sewage pipe sealing connection device according to any one of claims 1-7, characterized in that: The lower mounting part (4) is also provided with a lower sealing ring (17) on the outside, and the lower mounting part (4) is provided with a lower sealing ring positioning rib (18) on the outside.

9. The toilet and sewage pipe sealing connection device according to any one of claims 1-7, characterized in that: The lower mounting part (4) is also provided with a flip cover structure (19) at the bottom.

10. The toilet and sewage pipe sealing connection device according to claim 9, characterized in that: The flip structure (19) includes a flip cover (21) rotatably connected to the lower end of the lower mounting part (4) via a connecting seat (20). The connecting seat (20) is provided with an elastic structure that makes the flip cover (21) have a tendency to continuously close the outlet of the lower mounting part (4).

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