Combined waterproof sleeve

Abstract

The utility model relates to the technical field of building pipelines, in particular to a combined waterproof sleeve. The combined waterproof sleeve comprises a pre-embedded sleeve and a connecting sleeve, the pre-embedded sleeve comprises a sleeve body, a water stop wing ring unit and a clamping ring, the middle of the outer wall of the sleeve body is sleeved with the water stop wing ring unit, the clamping ring is arranged at the top end of the inner wall of the sleeve body and used for being connected with a lower pipeline in a clamped mode, and an inserting cavity is formed in the sleeve body and used for being connected with the connecting sleeve in an inserted mode. The pre-embedded sleeve is pre-embedded in the concrete bottom plate, the lower pipeline is inserted into the pre-embedded sleeve, and the top end of the lower pipeline abuts against the clamping ring. Due to the fact that the embedded sleeve and the connecting sleeve are detachably connected, the embedded sleeve can be flexibly applied in different scenes, the embedded sleeve is embedded in the concrete bottom plate, secondary cutting is not needed, and the installation efficiency is improved. Due to the arrangement of the water stop wing ring units, the clamping rings and the insertion cavities, the maximum insertion depth is achieved, better water leakage and seepage prevention functions are achieved, and then the requirements of modular building development at the present stage are met.

Description

Technical Field

[0001] This utility model relates to the field of building pipeline technology, and in particular to a combined waterproof sleeve. Background Technology

[0002] Currently, when PVC-U plastic drainage pipes pass through a concrete slab, a one-piece pre-molded water-stop joint, or integrated waterproof sleeve, is typically pre-installed on the concrete slab to connect the upper and lower drainage pipes. To prevent water from seeping through the gap between the waterproof sleeve and the concrete slab, a water-stop wing ring is installed in the middle section of the outer wall of the one-piece waterproof sleeve. For optimal water-proofing, the water-stop wing ring needs to be embedded in the middle of the concrete slab.

[0003] With the emergence and development of modular buildings, modular concrete base slabs are becoming increasingly thinner, reducing the overall thickness of the concrete base slab. However, the height of commercially available integrated waterproof sleeves is typically 10-15cm. When these sleeves are used in applications such as sewage basins and washbasins, the lower end of the sleeve cannot extend beyond the bottom surface of the base slab, requiring trimming. Similarly, when used in applications such as toilets and floor drains, the upper end cannot extend beyond the ground, and the lower end cannot extend beyond the bottom surface of the base slab, necessitating trimming of both ends. Therefore, integrated waterproof sleeves are inflexible and cumbersome to use in different applications. Trimming the sleeves is not only labor-intensive but also results in a shallower insertion depth between the sleeve and the pipe, posing a risk of leakage and seepage. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a combined waterproof sleeve, which solves the technical problems of low installation efficiency caused by secondary cutting of existing waterproof sleeves and increased risk of leakage and seepage between the sleeve and the pipe after secondary cutting.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model embodiment provides a combined waterproof sleeve for supporting upper and lower pipes, including a pre-embedded sleeve and a connecting sleeve; the pre-embedded sleeve includes a sleeve, a water-stop wing ring unit, and a snap-fit ​​ring. The water-stop wing ring unit is sleeved on the middle of the outer wall of the sleeve and fixedly connected. The top of the inner wall of the sleeve is provided with a snap-fit ​​ring and fixedly connected. The sleeve has an insertion cavity for insertion with the connecting sleeve; the pre-embedded sleeve can be pre-embedded in a concrete base slab, with the top and bottom of the pre-embedded sleeve flush with the top surface of the concrete base slab; the upper pipe is inserted into the pre-embedded sleeve or the connecting sleeve, and the lower pipe is inserted into the pre-embedded sleeve with its top abutting against the snap-fit ​​ring.

[0009] Preferably, the snap ring includes a snap-fit ​​horizontal part, which is disposed inside the sleeve, and the outer wall of the snap-fit ​​horizontal part is connected to the sleeve; the top end of the lower pipe abuts against the bottom end of the snap-fit ​​horizontal part; when the connecting sleeve is inserted into the insertion cavity of the pre-embedded sleeve, the bottom end of the upper pipe abuts against the top end of the snap-fit ​​horizontal part and snaps against the connecting sleeve.

[0010] Preferably, the snap ring further includes a snap vertical portion, which is connected to the inner wall of the snap horizontal portion, and the connection is an arc-shaped transition.

[0011] Preferably, the pre-embedded sleeve further includes a protective ring, which is fitted onto the top of the outer wall of the sleeve and fixedly connected.

[0012] Preferably, the pre-embedded sleeve also includes a base ring, which is connected to the bottom of the sleeve.

[0013] Preferably, the water-stop wing ring unit includes multiple water-stop wing rings, which are sleeved on the outer wall of the sleeve and fixedly connected; the multiple water-stop wing rings are spaced apart; the outer diameter of the base ring is larger than the outer diameter of any one of the water-stop wing rings.

[0014] Preferably, the water-stop wing extends radially outward and upward.

[0015] Preferably, three water-stop wing rings are provided.

[0016] Preferably, the connecting sleeve includes a first connecting sleeve and a second connecting sleeve arranged coaxially. The first connecting sleeve is sleeved on the outer wall of the second connecting sleeve and fixedly connected to the second connecting sleeve. When the connecting sleeve is inserted into the insertion cavity of the sleeve, the lower end of the first connecting sleeve is inserted into the insertion cavity, and the lower end of the second connecting sleeve abuts against the top end of the sleeve.

[0017] Preferably, the height of the pre-embedded sleeve is 3-4cm; when the connecting sleeve and the sleeve's insertion cavity are engaged, the height from the top of the connecting sleeve to the bottom of the pre-embedded sleeve is 6-15cm.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this utility model are:

[0020] This utility model relates to a combined waterproof sleeve for connecting upper and lower pipes, comprising a detachably connected pre-embedded sleeve and a connecting sleeve. Since the pre-embedded sleeve can be embedded in the concrete base slab, with its top and bottom flush with the top and bottom surfaces, no secondary cutting is required, improving installation efficiency. When the combined waterproof sleeve is used in applications such as floor drains and toilets, since the upper end of the waterproof sleeve cannot protrude from the ground, only the pre-embedded sleeve portion is used, with the upper pipe inserted into the cavity of the pre-embedded sleeve. When the combined waterproof sleeve is used in applications such as sewage basins and washbasins, the pre-embedded sleeve and connecting sleeve interlock, with the upper pipe inserted into the connecting sleeve, maximizing the insertion depth between the pre-embedded sleeve and connecting sleeve, and between the connecting sleeve and the upper pipe. The pre-embedded sleeve includes a sleeve, a water-stop wing ring unit, and a snap-fit ​​ring. The snap-fit ​​ring on the top of the inner wall of the sleeve maximizes the insertion depth between the lower pipe and the pre-embedded sleeve. The deep insertion depth between the pipe and the combined waterproof pipe sleeve improves the water-proof and seepage-proof performance, thus meeting the needs of the current development of modular buildings.

[0021] Since the water-stop ring unit is sleeved in the middle of the outer wall of the sleeve, it increases the contact surface between the embedded sleeve and the concrete base plate, and at the same time can block water from seeping downwards along the gap between the embedded sleeve and the concrete base plate. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the combined waterproof sleeve of this utility model when applied to sewage basins, hand basins and other application scenarios;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0024] Figure 3 This is a structural diagram of the combined waterproof sleeve of this utility model when applied to floor drains, toilets, and other similar applications.

[0025] Figure 4 This is a top view of the pre-embedded sleeve;

[0026] Figure 5 for Figure 4 Cross-sectional view at point AA;

[0027] Figure 6 This is a longitudinal cross-sectional view of the pre-embedded sleeve in another embodiment of the present invention.

[0028] [Explanation of Labels in the Attached Image]

[0029] 1: Embedded sleeve; 11: Sleeve; 12: Water-stop wing ring unit; 121: Water-stop wing ring; 13: Snap-fit ​​ring; 131: Horizontal snap-fit ​​part; 132: Vertical snap-fit ​​part; 14: Protective ring; 15: Base ring;

[0030] 2: Connecting sleeve; 21: First connecting sleeve; 22: Second connecting sleeve;

[0031] 3: Concrete base slab;

[0032] 4: Install the pipeline;

[0033] 5: Lower the pipe. Detailed Implementation

[0034] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 As shown in the figure, the combined waterproof sleeve proposed in this embodiment of the utility model is used to support the upper pipe 4 and the lower pipe 5. The combined waterproof sleeve includes a pre-embedded sleeve 1 and a connecting sleeve 2. The pre-embedded sleeve 1 can be pre-embedded in the concrete base slab 3. The top end of the pre-embedded sleeve 1 is flush with the top end of the concrete base slab 3, and the bottom end is flush with the bottom end of the concrete base slab 3. Therefore, there is no need to perform secondary cutting on the pre-embedded sleeve 1, which improves the installation efficiency. It should be noted that both the pre-embedded sleeve 1 and the connecting sleeve 2 are cylindrical structures.

[0036] like Figure 1 and Figure 5 As shown, the embedded sleeve 1 includes a sleeve 11, a water-stop wing ring unit 12, a snap-fit ​​ring 13, a protective ring 14, and a base ring 15. To increase the contact surface between the embedded sleeve 1 and the concrete base slab 3, and to prevent water from seeping downwards along the gap between the embedded sleeve 1 and the concrete base slab 3, the water-stop wing ring unit 12 is fitted onto the middle of the outer wall of the sleeve 11 and fixedly connected. To improve the water-proofing effect of the embedded sleeve 1, the water-stop wing ring unit 12 includes multiple water-stop wing rings 121, which are fitted onto the outer wall of the sleeve 11 and fixedly connected, and are spaced apart. In this embodiment, three water-stop wing rings 121 are provided, achieving optimal water-proofing and leakage prevention effects for the combined waterproof sleeve. Of course, as... Figure 6 As shown, in another embodiment of this utility model, the water-stopping wing ring 121 extends radially outward and upward to better prevent seepage water from continuing to flow downward. To increase the structural stability of the embedded sleeve 1, especially when facing external pressure or load, and to better protect the connecting sleeve 2 or the upper pipe 4 from damage, the protective ring 14 is fitted onto the top of the outer wall of the sleeve 11 and fixedly connected, thereby increasing the strength of the pipe end wall of the sleeve 11. For example... Figure 1 and Figure 4As shown, in order to make the sleeve 11 more stable in the concrete base plate 3, the base ring 15 is connected to the bottom of the sleeve 11, and the outer diameter of the base ring 15 is larger than the outer diameter of any waterstop ring 121.

[0037] To maximize the insertion depth between the lower pipe 5 and the embedded sleeve 1, a snap-fit ​​ring 13 is provided at the top of the inner wall of the sleeve 11 and is fixedly connected. Compared with the snap-fit ​​ring 13 located in the middle of the inner wall of the sleeve 11 in the prior art, the insertion depth between the lower pipe 5 and the sleeve 11 is deeper, thus achieving better anti-seepage and anti-leakage effects. Figure 2 As shown, the snap-fit ​​ring 13 includes a horizontal snap-fit ​​portion 131 and a vertical snap-fit ​​portion 132. The horizontal snap-fit ​​portion 131 is disposed inside the sleeve 11, and its outer wall is connected to the sleeve 11. The top end of the lower pipe 5 abuts against the bottom end of the horizontal snap-fit ​​portion 131. To prevent impurities in the sewage flowing down from the upper pipe 4 from accumulating on the snap-fit ​​ring 13, the vertical snap-fit ​​portion 132 is connected to the inner wall of the horizontal snap-fit ​​portion 131, and the connection is arc-shaped. A slot is formed between the snap-fit ​​ring 13 and the inner wall of the sleeve 11, and the slot is used to snap onto the top end of the lower pipe 5. Of course, to simplify the structure, the snap-fit ​​ring 13 may only include the horizontal snap-fit ​​portion 131.

[0038] It should be noted that in this embodiment, the sleeve 11 is a cylindrical structure, and the water-stop wing ring unit 12, the snap ring 13, the protective ring 14 and the base ring 15 are all annular structures.

[0039] like Figure 2 As shown, the connecting sleeve 2 includes a first connecting sleeve 21 and a second connecting sleeve 22 arranged coaxially. The first connecting sleeve 21 is sleeved on the outer wall of the second connecting sleeve 22 and fixedly connected to the second connecting sleeve 22. The lower end of the first connecting sleeve 21 is inserted into the insertion cavity of the sleeve 11, and the lower end of the second connecting sleeve 22 abuts against the top end of the sleeve 11, so that the connecting sleeve 2 is more stable when it is engaged with the pre-embedded sleeve 1.

[0040] like Figure 1 and Figure 3 As shown, the sleeve 11 has a plug-in cavity, which is used to plug into the connecting sleeve 2, making the combined waterproof sleeve flexible in different scenarios.

[0041] like Figure 3 As shown, when the combined waterproof sleeve is applied to scenarios such as floor drains and toilets, since the upper end of the waterproof sleeve cannot extend out of the ground, only the pre-embedded sleeve 1 is used. Since the diameter of the upper pipe 4 applied to scenarios such as floor drains and toilets is smaller than the diameter of the lower pipe 5, the lower end of the upper pipe 4 is directly inserted into the middle cavity of the pre-embedded sleeve 1, and the lower pipe 5 is inserted into the slot of the sleeve 11. The top end of the lower pipe 5 abuts against the bottom end of the snap-fit ​​horizontal part 131, thereby maximizing the insertion depth of the pre-embedded sleeve 1 and the lower pipe 5.

[0042] like Figure 1 As shown, when the combined waterproof sleeve is applied to scenarios such as sewage basins and handwashing basins, the lower end of the first connecting sleeve 21 is inserted into the insertion cavity of the sleeve 11, the lower end of the second connecting sleeve 22 abuts against the top of the sleeve 11, the bottom end of the upper pipe 4 abuts against the top of the locking horizontal part 131 and is locked with the connecting sleeve 1, and the lower pipe 5 is inserted into the slot of the sleeve 11, with the top end of the lower pipe 5 abutting against the bottom end of the locking horizontal part 131. This maximizes the insertion depth between the pre-embedded sleeve 1 and the connecting sleeve 2, between the pre-embedded sleeve 1 and the lower pipe 5, and between the connecting sleeve 2 and the upper pipe 4. Because the combined waterproof sleeve of this utility model has a deep insertion depth between the pipe and the pipe, it has good anti-leakage and anti-seepage functions, thus meeting the needs of the current development of modular buildings.

[0043] In this embodiment, the height of the pre-embedded sleeve 1 is 4cm. When the connecting sleeve 2 and the insertion cavity of the sleeve 11 are engaged, the height from the top of the connecting sleeve 2 to the bottom of the pre-embedded sleeve 1 is 8cm. When the combined waterproof sleeve of this embodiment is applied to a concrete base slab 3 with a thickness of 4cm, the combined waterproof sleeve and the upper pipe 4, and the combined waterproof sleeve and the lower pipe 5, all have a insertion depth of 3.8cm.

[0044] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A combined waterproof sleeve for connecting an upper pipe (4) and a lower pipe (5), characterized in that, Includes a pre-embedded sleeve (1) and a connecting sleeve (2); The pre-embedded sleeve (1) includes a sleeve (11), a water-stop wing ring unit (12), and a snap ring (13). The water-stop wing ring unit (12) is sleeved on the middle of the outer wall of the sleeve (11) and fixedly connected. The snap ring (13) is provided at the top of the inner wall of the sleeve (11) and fixedly connected. An insertion cavity is provided on the sleeve (11), and the insertion cavity of the sleeve (11) is used to insert into the connecting sleeve (2). The pre-embedded sleeve (1) can be pre-embedded in the concrete base plate (3). The top end of the pre-embedded sleeve (1) is flush with the top end of the concrete base plate (3), and the bottom end of the pre-embedded sleeve (1) is flush with the bottom end of the concrete base plate (3). The upper pipe (4) is inserted into the pre-embedded sleeve (1) or the connecting sleeve (2), and the lower pipe (5) is inserted into the pre-embedded sleeve (1) with the top end of the lower pipe (5) abutting against the snap ring (13).

2. The combined waterproof sleeve as described in claim 1, characterized in that: The snap ring (13) includes a snap horizontal part (131), which is disposed inside the sleeve (11), and the outer wall of the snap horizontal part (131) is connected to the sleeve (11). The top end of the lower pipe (5) abuts against the bottom end of the snap-fit ​​horizontal part (131); When the connecting sleeve (2) is inserted into the insertion cavity of the sleeve (11), the bottom end of the upper pipe (4) abuts against the top end of the snap-fit ​​horizontal part (131) and snaps into the connecting sleeve (2).

3. The combined waterproof sleeve as described in claim 2, characterized in that: The snap ring (13) also includes a snap vertical part (132), which is connected to the inner wall of the snap horizontal part (131), and the connection is arc-shaped.

4. The combined waterproof sleeve as described in claim 1, characterized in that: The pre-embedded sleeve (1) also includes a protective ring (14), which is sleeved on the top of the outer wall of the sleeve (11) and fixedly connected.

5. The combined waterproof sleeve as described in claim 1, characterized in that: The pre-embedded sleeve (1) also includes a base ring (15), which is connected to the bottom of the sleeve (11).

6. The combined waterproof sleeve as described in claim 5, characterized in that: The water-stop wing ring unit (12) includes multiple water-stop wing rings (121), which are sleeved on the outer wall of the sleeve (11) and fixedly connected. Multiple water-stop wing rings (121) are spaced apart; The outer diameter of the base ring (15) is greater than the outer diameter of any of the waterstop rings (121).

7. The combined waterproof sleeve as described in claim 6, characterized in that: The water-stop wing ring (121) extends outward and upward along its radial direction.

8. The combined waterproof sleeve as described in claim 6, characterized in that: Three of the aforementioned water-stop wing rings (121) are provided.

9. The combined waterproof sleeve as described in claim 1, characterized in that: The connecting sleeve (2) includes a first connecting sleeve (21) and a second connecting sleeve (22) arranged coaxially. The first connecting sleeve (21) is sleeved on the outer wall of the second connecting sleeve (22) and is fixedly connected to the second connecting sleeve (22). When the connecting sleeve (2) is inserted into the insertion cavity of the sleeve (11), the lower end of the first connecting sleeve (21) is inserted into the insertion cavity, and the lower end of the second connecting sleeve (22) abuts against the top end of the sleeve (11).

10. The combined waterproof sleeve as described in any one of claims 1-9, characterized in that: The height of the pre-embedded sleeve (1) is 3-4cm; When the connecting sleeve (2) is engaged with the insertion cavity of the sleeve (11), the height from the top of the connecting sleeve (2) to the bottom of the pre-embedded sleeve (1) is 6-15cm.

Images