Seepage-proof combined pipe fitting for sewer pipe

Abstract

The utility model relates to the technical field of building engineering construction, in particular to a sewer pipe anti-leakage combined pipe fitting which comprises a sewer pipe body, a lower sleeve and a first sealing ring. The sewer pipe body vertically penetrates through a floor slab, a backflow hole is formed in the lower portion of the floor slab, and a first external thread is arranged on the outer side of the sewer pipe body and located below the backflow hole. The lower sleeve comprises a lower fixing part and a drainage part which are fixedly connected, a first internal thread is arranged on the inner side of the lower fixing part, the lower fixing part is arranged on the outer side of the sewer pipe body in a sleeving mode and is in threaded connection with the sewer pipe body through the first external thread and the first internal thread, and the drainage part is located above the lower fixing part; the inner diameter of the upper end of the drainage part is larger than the outer diameter of the sewer pipe body. And the first sealing ring is arranged between the upper end of the drainage part and the bottom surface of the floor. And the leaked water is drained to the bottom of the drainage part of the lower sleeve, and is drained and discharged through the backflow hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to building engineering construction technical field more specifically, especially, a kind of sewer anti-seepage combination pipe fitting. BACKGROUND

[0002] Because pre-buried sleeve cannot meet construction demand in engineering actual construction, need to install sewer in the case of hole opening on floor afterwards, hole around is difficult to achieve completely stop seepage when hole opening on floor afterwards, to cause the problem that pipe and floor are not tight, sealing effect is poor, and easily cause water seepage UTILITY MODEL CONTENTS

[0003] The utility model discloses to overcome the problem that sewer and floor are easily caused to seep in the case of hole opening on floor afterwards, and install sewer, to provide a kind of sewer anti-seepage combination pipe fitting.

[0004] A kind of sewer anti-seepage combination pipe fitting, including sewer body, lower sleeve and first sealing ring.The sewer body vertically penetrates floor, and with the backflow hole being set in the floor below, first external thread is set on the outside of the sewer body and below the backflow hole.The lower sleeve includes fixedly connected lower fixed part and drainage part, first internal thread is set on the inside of the lower fixed part, the lower fixed part is set on the outside of the sewer body and is connected with the sewer body by the first external thread and first internal thread by screw thread, the drainage part is above the lower fixed part, the inner diameter of the upper end of the drainage part is greater than the outer diameter of the sewer body.The first sealing ring is set between the upper end of the drainage part and the bottom surface of the floor.

[0005] Further, the drainage part is in tapered structure, and the outer diameter of the drainage part gradually decreases towards the lower fixed part.

[0006] Further, the first sealing ring overlaps with the upper end surface of the drainage part.

[0007] Further, the backflow hole is evenly arranged along the circumference of the outside of the sewer body, and the backflow hole is located at the bottom of the drainage part.

[0008] Further, it further includes upper sleeve, the upper sleeve includes upper fixed part and anti-seepage part below upper fixed part, the upper fixed part is set on the outside of the sewer body and is connected with the sewer body by screw thread, the outer side of the lower end of the anti-seepage part is provided with annular pressing plate, and the second sealing ring is arranged between the annular pressing plate and floor.

[0009] Further, the anti-seepage part is in hollow tapered body structure, and the outer diameter of the anti-seepage part gradually increases towards the floor.

[0010] Further, the second sealing ring is provided with a baffle outside, and the baffle is integrally arranged with the annular pressing plate.

[0011] Further, the second sealing ring is made of water-swelling waterstop.

[0012] Further, the drainage part is in a hollow conical body structure, an annular top plate is arranged outside the upper end of the drainage part, and the first sealing ring is arranged between the annular top plate and the floor.

[0013] Further, the first sealing ring overlaps with the annular top plate.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The sewer anti-seepage combined pipe joint in the utility model is provided with a lower sleeve outside the sewer body below the floor, the lower fixed part of the lower sleeve is threadedly connected with the sewer body, the inner diameter of the upper end of the drainage part of the lower sleeve is larger than the outer diameter of the sewer body, and the first sealing ring is arranged, so that the seepage water is drained to the bottom of the drainage part of the lower sleeve and is drained and discharged through the backflow hole.

[0016] The sewer anti-seepage combined pipe joint in the utility model is provided with an upper sleeve outside the sewer body above the floor, the upper fixed part of the upper sleeve is threadedly connected with the sewer body, the anti-seepage part of the upper sleeve is provided with the annular pressing plate at the lower end, the second sealing ring is arranged between the annular pressing plate and the top surface of the floor, and the annular pressing plate and the floor extrude the sealing ring to form sealing, so that the water on the floor is prevented from seeping through the gap between the sewer body and the floor. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide further understanding of the utility model and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0018] Figure 1 It is the overall structure schematic view of the sewer anti-seepage combined pipe joint in the embodiment one.

[0019] Figure 2 It is the installation state schematic view of the sewer anti-seepage combined pipe joint in the embodiment one.

[0020] Figure 3 It is the installation state sectional view of the sewer anti-seepage combined pipe joint in the embodiment one.

[0021] Figure 4 It is the installation state schematic view of the sewer anti-seepage combined pipe joint in the embodiment two.

[0022] Figure 5This is a cross-sectional view of the installation status of the anti-leakage combination pipe fittings for the drain pipe in Example 2.

[0023] Figure 6 This is a schematic diagram of the installation status of the anti-leakage combination pipe fittings for the drain pipe in Example 3.

[0024] Figure 7 This is a cross-sectional view of the installation status of the anti-leakage combination pipe fittings for the drain pipe in Example 3.

[0025] In the diagram: 1. Drain pipe body; 2. Floor slab; 3. Return hole; 4. Lower fixing part; 5. Drainage part; 6. First sealing ring; 7. Upper fixing part; 8. Leak-proof part; 9. Annular pressure plate; 10. Second sealing ring; 11. Baffle; 12. Annular top plate. Detailed Implementation

[0026] 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.

[0027] Example 1:

[0028] like Figures 1-3 As shown, the leak-proof drain pipe assembly in this embodiment includes a drain pipe body 1, a lower sleeve, and a first sealing ring 6. The drain pipe body 1 vertically penetrates the floor slab 2 and has a return hole 3 below the floor slab 2. A first external thread is provided on the outer side of the drain pipe body 1 below the return hole 3. The lower sleeve includes a lower fixing part 4 and a drainage part 5 that are fixedly connected. A first internal thread is provided on the inner side of the lower fixing part 4. The lower fixing part 4 is sleeved on the outer side of the drain pipe body 1 and is threadedly connected to the drain pipe body 1 through the first external thread and the first internal thread. The drainage part 5 is located above the lower fixing part 4 and is integrally formed with the lower fixing part 4. The inner diameter of the upper end of the drainage part 5 is larger than the outer diameter of the drain pipe body 1. The first sealing ring 6 is disposed between the upper end of the drainage part 5 and the bottom surface of the floor slab 2.

[0029] In this embodiment, the drainage section 5 is generally conical in shape. The outer diameter of the drainage section 5 gradually decreases towards the lower fixing section 4. The inner and outer diameters of the lower end of the drainage section 5 are the same as those of the lower fixing section 4. The inner diameter of the upper end of the drainage section 5 is one size larger than the outer diameter of the drain pipe body 1. It is sufficient that the inner edge of the upper end of the drainage section 5 is located outside the hole in the floor slab 2.

[0030] The first sealing ring 6 overlaps the upper end surface of the drainage portion 5, that is, the inner and outer diameters of the first sealing ring 6 are the same as the inner and outer diameters of the upper end of the drainage portion 5. The first sealing ring 6 can be made of a rubber sealing ring, a water-swelling waterstop, or the like.

[0031] The backflow hole 3 is uniformly arranged along the outer side of the sewer pipe body 1, and the backflow hole 3 is located at the bottom of the drainage portion 5, thereby facilitating the drainage of seepage water. In the embodiment, the sewer pipe body 1 and the lower sleeve are both made of PVC material. The backflow hole 3 is a circular perforation with three rows of holes with a diameter of 4 mm.

[0032] The sewer pipe anti-seepage combined pipe fitting in the embodiment is used when the pipe passes through the floor 2. In actual engineering construction, the pre-buried sleeve cannot meet the construction requirements, and a hole needs to be opened on the floor 2. At this time, the pipe fitting can be used. When the hole is opened on the floor 2, it is difficult to completely block the seepage around the hole. After the sewer pipe anti-seepage combined pipe fitting in the embodiment is used, the upper end of the drainage portion 5 of the lower sleeve of the sewer pipe anti-seepage combined pipe fitting in the embodiment serves as a water inlet, and the seepage water can enter the sewer pipe body 1 through the backflow hole 3 and be drained.

[0033] During installation, the sewer pipe passing through the floor 2 of the bathroom is first pre-buried with the sewer pipe body 1, so that the first outer thread is below the floor 2. Then, the first sealing ring 6 is placed at the large end of the lower sleeve, the lower sleeve is sleeved on the sewer pipe body 1 with the large end facing upward, and the screw is tightened. Before installation of the sewer pipe anti-seepage combined pipe fitting in the embodiment, the height distance between the first outer thread of the pre-buried sewer pipe body 1 and the floor 2 should be calculated by measurement, so that the lower sleeve can tightly press the first sealing ring 6 after being tightened.

[0034] Embodiment Two:

[0035] The sewer pipe anti-seepage combined pipe fitting in the embodiment is a further improvement based on the first embodiment. As shown in Figures 4-5 The sewer pipe anti-seepage combined pipe fitting in the embodiment further includes an upper sleeve.

[0036] The upper sleeve includes an upper fixed portion 7 and an anti-seepage portion 8 located below the upper fixed portion 7. The upper fixed portion 7 is sleeved on the outer side of the sewer pipe body 1 and is threadedly connected with the sewer pipe body 1. Specifically, the outer side of the sewer pipe body 1 is provided with a second outer thread above the floor 2, and the inner side of the upper fixed portion 7 is provided with a second inner thread. The upper fixed portion 7 is connected with the sewer pipe body 1 through the second outer thread and the second inner thread. The outer side of the lower end of the anti-seepage portion 8 is provided with an annular pressing plate 9, and the annular pressing plate 9 and the floor 2 are provided with a second sealing ring 10 therebetween.

[0037] The anti-seepage part 8 is in a hollow conical body structure, and the outer diameter of the anti-seepage part 8 gradually increases towards the floor 2. The outer side of the second sealing ring 10 is provided with a baffle 11, and the baffle 11, the annular pressing plate 9 and the upper sleeve are integrally arranged. Preferably, the second sealing ring 10 is made of a water-swelling sealing strip.

[0038] By arranging the upper sleeve outside the sewer body 1 above the floor 2, the upper fixing part 7 of the upper sleeve is threadedly connected with the sewer body 1, the lower end of the anti-seepage part 8 of the upper sleeve is provided with the annular pressing plate 9, the second sealing ring 10 is arranged between the annular pressing plate 9 and the top surface of the floor 2, and the annular pressing plate 9 and the floor 2 extrude the sealing ring to form a seal, so as to prevent water on the floor 2 from seeping through the gap between the sewer body 1 and the floor 2. In combination with the structure in the first embodiment, a structure of one block and one gap is arranged on the upper and lower sides of the floor 2.

[0039] Before installation, the height distance between the first and second outer threads of the sewer body 1 after being embedded and the floor 2 should be calculated by measurement, so that the lower sleeve can be tightly pressed after being screwed, and the upper sleeve can be tightly pressed after being screwed. To adapt to floors 2 of different thicknesses, the range of the second outer thread can be appropriately expanded, so that the height of the upper sleeve installed outside the sewer body 1 can be appropriately adjusted.

[0040] Embodiment three:

[0041] The difference between the sewer anti-seepage combined pipe fitting in this embodiment and the sewer anti-seepage combined pipe fitting in the second embodiment lies in the structure of the drainage part 5 of the lower sleeve.

[0042] As shown in Figures 6-7 In this embodiment, the drainage part 5 is in a hollow conical body structure, the outer side of the upper end of the drainage part 5 is provided with an annular top plate 12, the first sealing ring 6 is located between the annular top plate 12 and the floor 2, the first sealing ring 6 overlaps the annular top plate 12, and the inner and outer diameters of the first sealing ring 6 are the same as those of the annular top plate 12. The annular top plate 12, the drainage part 5 and the lower fixing part 4 are integrally arranged.

[0043] The space inside the drainage part 5 in this embodiment is larger, when the second sealing ring 10 above the floor 2 loses the sealing effect, and there is more water seeping on the floor 2, more seepage water can be accommodated, so that the seepage water in the drainage part 5 has enough time to be discharged through the backflow hole 3.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A leak-proof sewer combination fitting, characterized by, The utility model relates to a floor drain structure, which comprises: a floor drain body (1) vertically penetrating a floor (2) and provided with a backflow hole (3) below the floor (2), the floor drain body (1) being provided with a first external thread outside the floor drain body (1) and below the backflow hole (3); a lower sleeve pipe comprising a fixed lower fixed part (4) and a drainage part (5), the lower fixed part (4) being provided with a first internal thread inside the lower fixed part (4), the lower fixed part (4) being sleeved on the floor drain body (1) outside the floor drain body (1) and being threadedly connected to the floor drain body (1) through the first external thread and the first internal thread, the drainage part (5) being located above the lower fixed part (4), and the inner diameter of the upper end of the drainage part (5) being greater than the outer diameter of the floor drain body (1); and a first sealing ring (6) provided between the upper end of the drainage part (5) and the bottom surface of the floor (2).

2. The leak-proof plumbing combination fitting of claim 1, wherein, The drainage part (5) has a tapered structure, and the outer diameter of the drainage part (5) gradually decreases towards the lower fixed part (4).

3. The leak-proof plumbing combination according to claim 2, wherein, The first sealing ring (6) overlaps the upper end surface of the drainage part (5).

4. The leak-proof drain assembly of claim 1, wherein, The backflow holes (3) are uniformly arranged along the circumference of the floor drain body (1) outside the floor drain body (1), and the backflow holes (3) are located at the bottom of the drainage part (5).

5. The leak-proof drain assembly of claim 1, wherein, The utility model further comprises an upper sleeve pipe comprising an upper fixed part (7) and a seepage prevention part (8) located below the upper fixed part (7), the upper fixed part (7) being sleeved on the floor drain body (1) outside the floor drain body (1) and being threadedly connected to the floor drain body (1), the seepage prevention part (8) being provided with an annular pressing plate (9) outside the lower end of the seepage prevention part (8), and a second sealing ring (10) being provided between the annular pressing plate (9) and the floor (2).

6. The leak-proof drain assembly of claim 5, wherein, The seepage prevention part (8) has a hollow tapered body structure, and the outer diameter of the seepage prevention part (8) gradually increases towards the floor (2).

7. The leak-proof drain assembly of claim 6, wherein, The second sealing ring (10) is provided with a baffle (11) outside the second sealing ring (10), and the baffle (11) is integrally arranged with the annular pressing plate (9).

8. The leak-proof drain assembly of claim 7, wherein, The second sealing ring (10) is made of a water-swelling sealing strip.

9. The leak-proof drain assembly of claim 1, wherein, The drainage part (5) has a hollow tapered body structure, the drainage part (5) is provided with an annular top plate (12) outside the upper end of the drainage part (5), and the first sealing ring (6) is located between the annular top plate (12) and the floor (2).

10. The leak-proof drain assembly of claim 9, wherein, The first sealing ring (6) overlaps the annular top plate (12).

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