Double-wall drainage anti-seepage sewer pipe fitting

Abstract

A double-wall drainage anti-seepage sewer pipe fitting comprises a vertical inner pipe (1), an outer pipe (2) arranged on the outer upper portion of the inner pipe in a sleeving mode and connected with the inner pipe into a whole, a waterproof edge pressing ring (3) arranged on the outer edge of the bottom end of the outer pipe and outer pipe drainage holes (2a) formed in the positions, with different heights, of the periphery of the outer pipe, and the top end of the outer pipe is connected with the inner pipe in a sealed mode through a top plate (4). The bottom end of the outer pipe and the inner pipe are connected in a sealed mode through a bottom plate (5), the bottom plate inclines downwards from the outer pipe to the inner pipe, and an inner pipe drainage hole (1a) is formed in the bottom, located in the bottom plate, of the inner pipe. The drainage device is simple in structure, easy and convenient to construct and capable of thoroughly draining accumulated water in the bathroom floor.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the anti-seepage device for bathroom floor. BACKGROUND

[0002] In the house building construction, the waterproof seepage of bathroom is very important. In order to prevent the bathroom from seepage, in addition to the reasonable design of water pipe line, the quality of pipe material and the reliability of pipe connection, and the waterproof layer of bathroom, the drainage measures should be considered when the bathroom accumulates water due to pipe leakage or decorative layer (upper waterproof layer) seepage, so as to prevent the bathroom from seepage and endanger the downstairs and adjacent room, and affect the normal use of the house.

[0003] To solve the problem of bathroom water seepage, various means are constantly taken and explored by construction units and relevant technical personnel. For example, CN209817049U discloses a new drainage structure, which comprises a drainage main body and an outer sleeve. The outer sleeve comprises a water seepage section arranged in the cement mortar layer and a drainage section connected with the drainage pipe. The water seepage section is provided with a plurality of overflow holes on the surface, and the bottom surface of the drainage section is provided with a plurality of drainage openings. A flow guide channel is arranged between the drainage main body and the outer sleeve. The water accumulated in the cement mortar layer flows into the flow guide channel from the overflow holes on the water seepage section, and then flows into the drainage pipe through the drainage openings and is discharged, thereby preventing water from accumulating in the cement mortar layer for a long time to form seepage. The water seepage section of the outer sleeve is arranged only in the cement mortar layer, and the lower surface of the connecting section is placed at the opening of the drainage pipe by the arranged resting step. The problem is solved that the water in the bathroom, balcony and other places cannot be discharged due to the non-compactness of the floor drain around or the water in the bathroom being stored in the ceramic tile mortar. However, the water accumulated in the backfill layer below the ceramic tile mortar layer in the bathroom cannot be discharged. In addition, the lower surface of the connecting section is only placed at the opening of the drainage pipe by the resting step, which is unstable in installation. Furthermore, the structure is relatively complex. The inner cavity of the outer sleeve is bent inward at the top to form a bent structure. The top surface of the drainage main body is provided with a transition plane connected with the outer sleeve. The outer edge of the transition plane is provided with a hook matched with the bent structure. The hook is connected with the transition plane by buckling. The manufacturing and assembly of the hook are troublesome, and the hook is easy to be damaged when disassembled. CN104047356A discloses a bathroom and a method for preventing seepage. An additional hidden floor drain connected with the drainage pipe of the floor drain is arranged. The top of the hidden floor drain is connected with the floor of the bathroom. The top end of the hidden floor drain is closed, and a plurality of small holes are formed in the side wall to guide the water seeped into the floor into the drainage pipe of the floor drain, so as to prevent the water in the bathroom from seeping into the adjacent room. The structure design requires additional installation of a hidden floor drain, which is troublesome in construction and requires high construction quality. The hidden floor drain cannot ensure that the water accumulated in the floor layers such as the leveling layer, the waterproof layer and the waterproof protection layer is completely discharged. CN119122083A discloses a sinking bathroom backfill layer drainage technology. A side wall floor drain is arranged in the backfill layer of the sinking bathroom to collect the seepage water in the backfill layer of the sinking bathroom. The side wall floor drain is connected to the main floor drain drainage pipe of the lower bathroom through a leakage drainage pipe. The leakage drainage pipe of the upper bathroom is connected to the main floor drain drainage pipe of the lower bathroom one by one, thereby forming a sinking bathroom backfill layer seepage drainage system for the whole building. This method requires an additional floor drain in the side wall, which increases the amount of water pipes and floor drains and makes the construction complex and requires higher waterproof construction.

[0004] In summary, the existing technical means generally have the problems of incomplete drainage of accumulated water, complex device structure, high construction requirement and high cost. SUMMARY

[0005] The utility model discloses a double-wall drainage anti-seepage downpipe spare of simple structure, simple construction and can completely drain the accumulated water in the bathroom floor.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A double-wall drainage anti-seepage underground pipe joint, comprising a vertical inner pipe, an outer pipe sleeved on the outer upper part of the inner pipe and connected with the inner pipe as a whole, a waterproof pressure flange ring arranged on the outer edge of the bottom end of the outer pipe, and outer pipe drainage holes opened at different height positions of the peripheral circle of the outer pipe, wherein the top end of the outer pipe is connected with the inner pipe through a top plate, the bottom end of the outer pipe is connected with the inner pipe through a bottom plate, the bottom plate is inclined downward from the outer pipe to the inner pipe, and an inner pipe drainage hole is opened at the bottom of the inner pipe within the bottom plate.

[0008] Further, a layer of silk screen is coated on the outer pipe.

[0009] Further, the waterproof pressure flange ring is inclined outward and upward in the same direction as the slope of the bottom plate.

[0010] Further, a water stop ring is arranged outside the lower part of the inner pipe.

[0011] Further, the diameter of the outer pipe drainage hole is 1-5 mm.

[0012] Further, the diameter of the inner pipe drainage hole is 5-10 mm.

[0013] The utility model has the following advantages: the utility model sets the inner pipe and the outer pipe, opens the outer pipe drainage hole at different height positions of the peripheral circle of the outer pipe, sets the bottom plate to be inclined downward to the inner pipe, opens the inner pipe drainage hole at the bottom of the inner pipe within the bottom plate, installs the utility model at the sewer hole position of the bathroom during the civil construction, and the outer pipe part is located at the backfill layer position of the bathroom. When the waterproof layer of the bathroom appears water seepage and causes water accumulation above the lower waterproof layer of the bathroom after the civil construction and the house decoration are completed, the water accumulation will flow into the outer pipe and the inner pipe through the outer pipe drainage hole, and then flow into the inner pipe through the inner pipe drainage hole and be discharged. The water accumulation can be discharged completely due to the downward inclination of the bottom plate to the inner pipe, so that the water accumulation in the bathroom is effectively avoided. The utility model has the advantages of simple structure, integral structure of the outer pipe and the inner pipe, and small diameter of the outer pipe drainage hole or small mesh silk screen arranged outside the outer pipe, so that the building sandstone and the like cannot easily enter the outer pipe and form blockage. The utility model is simple in construction and installation, basically same as the existing process of installing the sewer pipe of the bathroom, does not increase the construction process and difficulty, and is high in practicability. The waterproof pressure flange ring arranged on the outer edge of the bottom end of the outer pipe plays the role of water resistance and installation positioning. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of one embodiment of the utility model;

[0015] Figure 2 is a structural schematic view of another embodiment of the present application;

[0016] Figure 3 is adopted Figure 1 the installation and use schematic view of the double-wall drainage anti-seepage sewer pipe shown in the figure;

[0017] Figure 4 is adopted Figure 2 the installation and use schematic view of the double-wall drainage anti-seepage sewer pipe shown in the figure. DETAILED DESCRIPTION

[0018] The content of the present application is further illustrated below in combination with the drawings of the specification.

[0019] As shown in Figure 1 , Figure 2 , a double-wall drainage anti-seepage sewer pipe, comprising a vertical inner pipe 1, an outer pipe 2 sleeved on the outer upper part of the inner pipe and connected as a whole with the inner pipe, a waterproof pressure edge ring 3 provided on the outer edge of the bottom end of the outer pipe, and outer pipe drainage holes 2a opened at different height positions on the circumference of the outer pipe. The top end of the outer pipe is closed and connected with the inner pipe through a top plate 4, and the bottom end of the outer pipe is closed and connected with the inner pipe through a bottom plate 5, and the bottom plate is inclined downward from the outer pipe to the inner pipe. An inner pipe drainage hole 1a is opened on the bottom of the inner pipe inside the bottom plate. The hole diameter of the outer pipe drainage hole 2a is usually 1-5 mm, as long as water can seep through. In order to prevent small backfill materials from falling into the space between the outer pipe and the inner pipe through the outer pipe drainage hole, a layer of fine wire mesh 7 can be wrapped outside the outer pipe to block small particle backfill materials or other building materials. In order to not affect the expression of the structure of the present application, the wire mesh is not drawn in Figure 1 , Figure 2 , and is shown in Figure 3 and Figure 4 . The hole diameter of the inner pipe drainage hole 1a can be slightly larger, generally 5-10 mm, which can not only ensure smooth drainage, but also can flush a small amount of small powder falling into the inner pipe to the normal drainage system at the rear edge of the inner pipe. The waterproof pressure edge ring 3 on the outer edge of the bottom end of the outer pipe plays a role in water blocking and installation positioning. The waterproof pressure edge ring 3 can be inclined outward and upward as shown in Figure 3 , consistent with the slope of the bottom plate 5, which is more convenient for civil construction. As a preferred embodiment, the outer end of the waterproof pressure edge ring can be turned up a section of the curled edge 3a, and the outer side of the curled edge is designed as an uneven honeycomb surface or a wave surface, which can be better combined with the cement mortar, Figure 1 a local honeycomb surface 3b is schematically shown. The waterproof pressure edge ring 3 can also be provided as a horizontal pressure edge ring as shown in Figure 4 . The present application can also be provided with a water stop ring 6 outside the lower part of the inner pipe, which plays a role in anti-seepage and water stopping. Generally, a floor drain 8 is installed on the upper end of the inner pipe of the present application.

[0020] The installation and use method of the utility model is seen Figure 3 and Figure 4 . The utility model is installed through the reinforced concrete floor A at the position of installing the sewer pipe between the bathroom of the first floor and the bathroom of the next floor. When installing, the upper part of the outer pipe of the utility model is arranged above the reinforced concrete floor A, and the sewer pipe is connected below the reinforced concrete floor A. The upper leveling and sloping layer B is constructed on the reinforced concrete floor by using cement mortar, the lower waterproof layer C is made on the upper leveling and sloping layer by using waterproof material, the protection layer D is laid on the lower waterproof layer by using cement mortar, then the backfill layer E is formed by backfilling ceramsite or other suitable materials. A circle of wire mesh 7 with small mesh is arranged outside the outer pipe, which can prevent the fine particles mixed in the ceramsite from entering the outer pipe to form blockage, even if a small amount of extremely fine powdery material enters the outer pipe, the water will also be flushed into the inner pipe. The wire mesh can be stainless steel wire mesh. Then the cement mortar cushion layer F is laid on the backfill layer, and the upper waterproof layer G is made on the cement mortar cushion layer by using waterproof material. When decorating, the lower leveling and sloping layer H is laid on the upper waterproof layer by using cement mortar (the lower leveling and sloping layer is usually arranged with a certain slope to guide water into the floor drain), and the decorative layer L (such as floor tile) is laid on the lower leveling and sloping layer (the decorative layer is usually arranged with a certain slope to guide water into the floor drain). When the pipe fittings of the bathroom of the upper floor, the decorative layer (the upper waterproof layer) leak, even if the water leaks to the structure layer (such as the cushion layer F and the backfill layer E) above the waterproof layer of the bathroom of the lower floor to form water accumulation, the water accumulation will flow into the outer pipe and the inner pipe through the outer pipe drainage hole, and then flow into the inner pipe through the inner pipe drainage hole and be discharged. Since the bottom plate is inclined downward to the inner pipe, smooth drainage can be ensured, and the water accumulation can be discharged completely, thereby effectively avoiding the long-term water accumulation between the structure layers of the bathroom to leak to the side wall and the next floor. Figure 3 The honeycomb uneven surface of the upper turning-over bead 3a of the waterproof pressure ring can be better combined with the cement mortar protection layer D in the waterproof structure in the utility model, and the cement mortar protection layer D is not easy to separate. Figure 4 The waterproof pressure ring in the utility model is a horizontal ring, and the civil construction is also easy to realize.

[0021] The utility model has the advantages of simple structure, easy manufacturing, no increase of excessive engineering cost, no need of modifying the civil structure, simple construction mode, adoption of conventional construction technology, wide application, good market prospect, and the like. The utility model has the advantages of simple structure, easy manufacturing, no increase of excessive engineering cost, no need of modifying the civil structure, simple construction mode, adoption of conventional construction technology, wide application, good market prospect, and the like.

Claims

1. A double-walled drainage impermeable sewer pipe, characterized in that, The vertical inner tube (1), the outer tube (2) which is sleeved on the upper part of the inner tube and is connected with the inner tube as a whole, the waterproof pressure flange ring (3) which is arranged on the outer edge of the bottom end of the outer tube, the outer tube drainage hole (2a) which is opened on the outer tube at different height positions, the top end of the outer tube is closed and connected with the inner tube through the top plate (4), the bottom end of the outer tube is closed and connected with the inner tube through the bottom plate (5), the bottom plate is inclined downward from the outer tube to the inner tube, and the inner tube drainage hole (1a) is opened on the bottom of the inner tube inside the bottom plate.

2. A double wall drainage and anti-seepage sewer pipe according to claim 1, characterized in that, A layer of silk screen (7) is coated on the outer tube.

3. A double wall drainage and anti-seepage sewer pipe according to claim 1 or 2, characterized in that, The waterproof pressure flange ring (3) is inclined outward and upward in the same slope as the slope of the bottom plate (5).

4. A double wall drainage and anti-seepage sewer pipe according to claim 1 or 2, characterized in that, The waterproof pressure flange ring (3) is a horizontal pressure flange ring.

5. A double wall drainage and anti-seepage sewer pipe according to claim 1 or 2, characterized in that, A circle of water stop ring (6) is arranged outside the lower part of the inner tube.

6. A double wall drainage and anti-seepage sewer pipe according to claim 1 or 2, characterized in that, The aperture of the outer tube drainage hole (2a) is 1-5 mm.

7. A double wall drainage and anti-seepage sewer pipe according to claim 1 or 2, characterized in that, The aperture of the inner tube drainage hole (1a) is 5-10 mm.

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