Multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating through floor

Abstract

The present application relates to a kind of multifunctional combination pipe fittings suitable for modular integrated building pipe floor-penetrating, comprising: water three-way, pre-buried sleeve, connecting straight pipe and water seal fixed pipe fittings.Pre-buried sleeve includes first inner tube and first outer tube, and the upper end between first inner tube and first outer tube forms water accumulation section, overflow drainage hole is opened in first inner tube;Connecting straight pipe includes first pipe section and second pipe section, and the upper end of first pipe section is inserted into lower socket after passing through first inner tube;Water seal fixed pipe fittings include second inner tube and second outer tube, and water seal groove is formed between second inner tube and second outer tube, second pipe section is inserted into water seal groove, so that water seal groove forms water seal bend, and the upper end of second outer tube is connected with the lower end of first inner tube.The multifunctional combination pipe fittings of the present application is simple in structure, easy to manufacture, can discharge the water in mortar layer to the inside of pipe, and can prevent the odor in the inside of pipe from overflowing into the living space of modular integrated building.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete modular integrated building, and particularly relates to a multifunctional combined pipe fitting suitable for pipe penetrating floor slab of modular integrated building. BACKGROUND

[0002] The concrete modular integrated building takes a standard module as a basic unit, and completes production of a module body, installation of sanitary wares, installation of mechanical and electrical pipelines and overall decoration in a factory, and only performs assembly and combination of the standard modules and connection of pipelines between the standard modules on site, so that the concrete modular integrated building is a new type of rapid construction mode and has the advantages of high assembly and integration degree, fast construction efficiency and good construction quality. When the standard modules are vertically positioned and assembled, a cast-in-place layer and a 20mm-thick bedding mortar layer are cast on the top of a lower module, an upper module is hoisted directly above the lower module and is seated on the bedding mortar layer, and the bedding mortar layer plays a role of bonding and leveling.

[0003] The existing modular integrated building has the following defects and deficiencies: (1) the bedding mortar layer is not continuous and cavities are formed, and in the case of on-site construction concrete curing, rainfall during construction and pipeline accident water leakage, water is easily accumulated in the cavities, and the water accumulation causes water leakage and moisture in the standard module. At present, a new drainage riser pipe is usually needed, which causes space waste and makes construction more difficult. When the bedding mortar layer drainage is directly connected to the sewage riser pipe, the water seal cannot be replenished, causing the odor in the sewage riser pipe to overflow to the bedding mortar layer and then to the indoor space. (2) The existing sanitary tank drainage pipe fitting on the market cannot replenish the water seal in time, which easily causes the odor in the drainage riser pipe to overflow into the indoor space, affecting the living feeling and causing complaints from the owners. (3) The riser pipe in the module of the modular integrated building is partially installed in the factory, and the decoration and waterproofing of the riser pipe are mostly completed in the factory. When the upper and lower pipes are connected on site, the operable space is small. The lower module connects the upper and lower pipes through a reserved sleeve, and the gap between the sleeve and the pipe is difficult to seal and has poor appearance, so that it is difficult to seal tightly and causes water leakage.

[0004] Therefore, it is urgent to provide a multifunctional combined pipe fitting suitable for pipe penetrating floor slab of modular integrated building and capable of draining water accumulated in the bedding mortar layer. SUMMARY

[0005] (I) Technical problems to be solved

[0006] In view of the above-mentioned defects and deficiencies of the prior art, the present application provides a multifunctional combined pipe fitting suitable for pipe penetrating floor slab of modular integrated building, which solves the technical problem that the existing pipe fitting for pipe penetrating floor slab of modular integrated building cannot drain water accumulated in the bedding mortar layer.

[0007] (ii) Technical Solution

[0008] To achieve the above object, the main technical solution adopted by the present application comprises:

[0009] The embodiment of the present application provides a multifunctional combined pipe fitting suitable for modular integrated building pipe floor penetration, comprising:

[0010] The water-following tee is arranged in the bottom plate of the upper layer module and has an upper socket, a lower socket and a side socket.

[0011] The pre-buried sleeve is arranged in the top plate of the lower layer module and comprises a first inner pipe, the middle part of the outer sidewall of the first inner pipe first extends outward and then upward to form a first outer pipe, a water accumulation section is formed between the upper end of the first inner pipe and the upper end of the first outer pipe, and an overflow drainage hole is formed in the pipe wall of the first inner pipe and communicates with the water accumulation section.

[0012] The connecting straight pipe comprises a first pipe section, a second pipe section with a larger diameter than the first pipe section and a connecting section connecting the first pipe section and the second pipe section, and the upper end of the first pipe section is inserted into the lower socket after penetrating through the first inner pipe.

[0013] The water seal fixing pipe fitting comprises a second inner pipe, the middle part of the outer sidewall of the second inner pipe first extends outward and then upward to form a second outer pipe, a water seal groove is formed between the second inner pipe and the second outer pipe, the second pipe section is inserted into the water seal groove, so that a water seal bend is formed in the water seal groove, and the upper end of the second outer pipe is detachably connected with the lower end of the first inner pipe.

[0014] Optionally, the lower end of the first inner pipe extends outward to form a spinning connection port, a plurality of first spinning fixing members are arranged on the inner wall surface of the spinning connection port in a circumferential direction, a plurality of second spinning fixing members are arranged on the outer wall surface of the upper end of the second outer pipe in a circumferential direction, and the second spinning fixing members are connected with the first spinning fixing members by spinning.

[0015] A first sealing rubber ring is arranged between the upper end of the second outer pipe and the spinning connection port to prevent water flow in the pipe from leaking.

[0016] Optionally, a limiting edge is arranged on the outer sidewall of the connecting section of the connecting straight pipe, the limiting edge abuts against the bottom surface of the spinning connection port, so that a gap for water flow is formed between the spinning connection port and the connecting section.

[0017] Optionally, a plurality of overflow drainage notches are arranged on the edge of the upper end of the second inner pipe of the water seal fixing pipe fitting, so that a gap is formed between the lower surface of the connecting section and the upper end of the second inner pipe, and the accumulated water in the water seal groove can overflow into the second inner pipe.

[0018] Optionally, the diameter of the upper end of the first pipe section of the connecting straight pipe is constant, and the diameter of the lower end of the first pipe section gradually decreases.

[0019] Optionally, the sill of the overflow drainage hole is 6-10 mm high, thereby forming a sediment tank between the first inner pipe and the first outer pipe below the water collection section.

[0020] Optionally, the water seal water supply pipe is provided on the outer extension plate of the downward-facing spout, and the water seal water supply pipe is connected to the bathroom basin drainage pipe through a hose.

[0021] The pre-embedded sleeve is provided with an annular rubber sleeve on the outer wall surface of the first inner pipe, and the upper end of the annular rubber sleeve abuts against the bottom surface of the outer extension plate, so as to separate the screed layer from the water outlet end of the water seal water supply pipe.

[0022] Optionally, the outer extension plate is further provided with a sediment tank secondary drainage pipe, and the sediment tank secondary drainage pipe is connected to the bathroom sediment tank secondary drainage component through a hose.

[0023] Optionally, the bottom surface of the outer extension plate is provided with an annular water droplet groove around the water outlet end of the water seal water supply pipe and the sediment tank secondary drainage pipe, so as to hinder water droplets from flowing outward and overflowing along the bottom surface of the outer extension plate.

[0024] Optionally, the upper spout is inserted into the drainage vertical pipe of the upper layer module, the side spout is connected to the drainage horizontal pipe of the bathroom of the upper layer module, and the lower end of the second inner pipe is inserted into the drainage vertical pipe of the lower layer module.

[0025] (Three) beneficial effects

[0026] The beneficial effects of the present application are: the multifunctional combined pipe fitting suitable for the modular integrated building pipe floor-penetrating of the present application, because it comprises: a water-following tee used for being arranged in the bottom plate of the upper layer module, having an upper socket, a lower socket and a side socket; a pre-buried sleeve used for being arranged in the top plate of the lower layer module, comprising a first inner pipe, the middle part of the outer side wall of the first inner pipe first extends outwardly, then upwardly to form a first outer pipe, a water accumulation section is formed between the upper end of the first inner pipe and the upper end of the first outer pipe, and an overflow drainage hole is formed in the pipe wall of the first inner pipe and communicates with the water accumulation section; a connecting straight pipe comprising a first pipe section, a second pipe section with a larger diameter than the first pipe section and a connecting section connecting the first pipe section and the second pipe section, the upper end of the first pipe section penetrates through the first inner pipe and is inserted into the lower socket; a water seal fixing pipe fitting comprising a second inner pipe, the middle part of the outer side wall of the second inner pipe first extends outwardly, then upwardly to form a second outer pipe, a water seal groove is formed between the second inner pipe and the second outer pipe, the second pipe section is inserted into the water seal groove, so that a water seal bend is formed in the water seal groove, and the upper end of the second outer pipe is detachably connected with the lower end of the first inner pipe; compared with the prior art, the accumulated water in the modular integrated building bedding layer can enter the space enclosed by the first inner pipe and the first outer pipe through the water accumulation section, then enter the inside of the first inner pipe through the overflow drainage hole on the first inner pipe, and then enter the water seal groove in the water seal fixing pipe fitting through the gap between the first inner pipe and the connecting straight pipe; finally, the accumulated water enters the inside of the second inner pipe through the water seal bend in the water seal groove, and then is discharged into the drainage riser of the lower layer module through the second inner pipe. The water seal bend arranged in the water seal groove can prevent the odor in the drainage riser from overflowing into the living space of the modular integrated building. In addition, the water-following tee, the pre-buried sleeve, the connecting straight pipe and the water seal fixing pipe fitting of the present application are simple in structure and convenient to process and manufacture.

[0027] The multifunctional combined pipe fitting of the present application adopts spinning connection between the upper end of the second outer pipe and the lower end of the first inner pipe, which not only connects and fastens the water seal fixing pipe fitting and the pre-buried sleeve, but also facilitates installation and disassembly.

[0028] The multifunctional combined pipe fitting of the present application is provided with a limiting edge on the outer side wall of the connecting section, and a plurality of overflow drainage notches are formed in the edge of the upper end of the second inner pipe, which can ensure that there is a gap for water flow between the spinning connection port and the connecting section, and between the lower surface of the connecting section and the upper end of the second inner pipe, so that the accumulated water in the bedding layer can be smoothly discharged.

[0029] The multifunctional combined pipe fitting of the present application is provided with a limiting edge on the outer side wall of the connecting section, which can limit the insertion depth of the first pipe section and the lower socket, so as to adjust and eliminate the vertical deviation between the bottom plate of the upper layer module and the top plate of the lower layer module.

[0030] The multifunctional combined pipe fitting of the application can adjust the deviation when the water flow tee and the embedded sleeve have a horizontal deviation within ±10mm, so that the connecting straight pipe can be normally assembled and operated without water leakage and odor return.

[0031] The multifunctional combined pipe fitting of the application can adjust the deviation when the water flow tee and the embedded sleeve have a horizontal deviation within ±10mm, so that the connecting straight pipe can be normally assembled and operated without water leakage and odor return.

[0032] The multifunctional combined pipe fitting of the application can adjust the deviation when the water flow tee and the embedded sleeve have a horizontal deviation within ±10mm, so that the connecting straight pipe can be normally assembled and operated without water leakage and odor return. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a three-dimensional schematic view of the multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating floor slab of the application;

[0034] Figure 2 is a side view schematic view of the water flow tee of the multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating floor slab of the application;

[0035] Figure 3 is a sectional view schematic view of the water flow tee of the multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating floor slab of the application;

[0036] Figure 4 is a three-dimensional schematic view of the embedded sleeve of the multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating floor slab of the application;

[0037] Figure 5 is a sectional view schematic view of the embedded sleeve of the multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating floor slab of the application;

[0038] Figure 6 is a three-dimensional schematic view of the connecting straight pipe of the multifunctional combined pipe fitting suitable for modular integrated building pipe penetrating floor slab of the application;

[0039] Figure 7Cross-sectional view of the connecting straight pipe of the multifunctional combined pipe fitting of the present application suitable for modular integrated building pipe floor penetrating;

[0040] Figure 8 Schematic diagram of the water seal fixing pipe fitting of the present application suitable for the multifunctional combined pipe fitting of the modular integrated building pipe floor penetrating;

[0041] Figure 9 Cross-sectional view of the water seal fixing pipe fitting of the present application suitable for the multifunctional combined pipe fitting of the modular integrated building pipe floor penetrating;

[0042] Figure 10 Cross-sectional view of the multifunctional combined pipe fitting of the present application suitable for modular integrated building pipe floor penetrating; wherein route A is the accumulated water discharge route in the sitting mortar layer; and route B is the water seal water supplement or caisson secondary drainage route;

[0043] Figure 11 Positional schematic diagram of the multifunctional combined pipe fitting of the present application suitable for modular integrated building pipe floor penetrating when installed in the modular integrated building.

[0044]

Explanation of reference numerals

[0045] 1: straight water three-way pipe; 101: upper socket; 102: lower socket; 103: side socket; 104: outer extension plate; 105: water seal water supplement pipe; 106: caisson secondary drainage pipe; 107: water droplet groove;

[0046] 2: pre-buried sleeve; 201: first inner pipe; 202: first outer pipe; 203: annular rubber sleeve; 204: sediment tank; 205: accumulated water collection section; 206: overflow drainage hole; 207: spinning connection port; 208: first sealing rubber ring; 209: first spinning fixing member;

[0047] 3: connecting straight pipe; 301: first pipe section; 302: second pipe section; 303: connecting section; 304: limiting edge;

[0048] 4: water seal fixing pipe fitting; 401: second inner pipe; 402: second outer pipe; 403: water seal groove; 404: overflow drainage notch; 405: second spinning fixing member; 406: flexible socket joint;

[0049] 5: bottom plate;

[0050] 6: top plate;

[0051] 7: cast-in-place layer;

[0052] 8: sitting mortar layer. DETAILED DESCRIPTION

[0053] For better explaining the present application, in order to facilitate understanding, the following specific embodiments are described in detail in combination with the drawings. Wherein, the orientation terms mentioned in this paper, such as "up", "down", etc. Figure 1 are taken as the reference.

[0054] Please refer to Figures 1 to 11 , the embodiment provides a multifunctional combined pipe fitting suitable for modular integrated building pipe floor-penetrating, which comprises a water-following tee 1, a pre-buried sleeve 2, a connecting straight pipe 3 and a water seal fixing pipe fitting 4.

[0055] The water-following tee 1 is arranged in the bottom plate 5 of the upper layer module, has an upper socket 101, a lower socket 102 and a side socket 103, the upper socket 101 is inserted with the drainage vertical pipe of the upper layer module, and the side socket 103 is connected with the drainage horizontal pipe of the bathroom of the upper layer module.

[0056] The pre-buried sleeve 2 is arranged in the top plate 6 of the lower layer module, and comprises a first inner pipe 201, the middle part of the outer side wall of the first inner pipe 201 extends outwardly first, then extends upwardly to form a first outer pipe 202, a water accumulation section 205 is formed between the upper end of the first inner pipe 201 and the upper end of the first outer pipe 202, and an overflow drainage hole 206 is formed in the pipe wall of the first inner pipe 201 and communicates with the water accumulation section 205.

[0057] The connecting straight pipe 3 comprises a first pipe section 301, a second pipe section 302 with a larger diameter than the first pipe section 301 and a connecting section 303 connecting the first pipe section 301 and the second pipe section 302, and the upper end of the first pipe section 301 is inserted with the lower socket 102 of the water-following tee 1 after penetrating through the pre-buried sleeve 2.

[0058] The water seal fixing pipe fitting 4 comprises a second inner pipe 401, the middle part of the outer side wall of the second inner pipe 401 extends outwardly first, then extends upwardly to form a second outer pipe 402, a water seal groove 403 is formed between the second inner pipe 401 and the second outer pipe 402, the second pipe section 302 is inserted into the water seal groove 403, so that a water seal bend is formed in the water seal groove 403, the upper end of the second outer pipe 402 is detachably connected with the lower end of the first inner pipe 201, and the lower end of the second inner pipe 401 is inserted with the drainage vertical pipe of the lower layer module.

[0059] Refer to Figure 10 and Figure 11As shown, the drainage route A of the multifunctional combined pipe fitting in this embodiment is as follows: First, the water in the grouting layer 8 enters the interior of the pre-embedded sleeve 2 through the water collection section 205, i.e., between the first inner pipe 201 and the first outer pipe 202; second, the water enters the interior of the first inner pipe 201 through the overflow drainage hole 206 on the pipe wall of the first inner pipe 201, and then enters the water seal groove 403 in the water seal fixing fitting 4 through the gap between the first inner pipe 201 and the connecting straight pipe 3; finally, the water enters the interior of the second inner pipe 401 through the water seal bend inside the water seal groove 403, and then drains into the drainage riser of the lower module. The water seal bend inside the water seal groove 403 has a height of not less than 50mm, which can prevent the odor in the drainage riser from drifting into the living space of the modular integrated building. Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the water-receiving tee 1 extends outward from the edge of the lower socket 102 to form an extension plate 104. A water seal water supply pipe 105 and a secondary drainage pipe 106 for the sump are provided on the extension plate 104. The water seal water supply pipe 105 is connected to the bathroom sink drain pipe through an HDPE hose, and the secondary drainage pipe 106 for the sump is connected to the secondary drainage component of the bathroom sump through an HDPE hose.

[0060] Reference Figure 10 and Figure 11 As shown, the multifunctional combined pipe fitting water seal replenishment or sump secondary drainage path B in this embodiment is as follows: First, the bathroom sink drain pipe or sump secondary drainage pipe is connected to the water seal replenishment pipe 105 or the sump secondary drainage pipe 106 through a flexible hose. The water flows into the annular rubber sleeve 203 on the outer wall of the first inner pipe 201, and then enters the water seal groove 403 in the water seal fixing fitting 4 through the gap between the first inner pipe 201 and the connecting straight pipe 3. Finally, the water flows through the water seal groove 403 to replenish the water seal bend, and the excess water flows through the water seal bend into the second inner pipe 401, and then flows through the second inner pipe 401 to the drainage riser of the lower module.

[0061] An annular rubber sleeve 203 is provided on the outer wall of the first inner pipe 201. The upper end of the annular rubber sleeve 203 abuts against the bottom surface of the outer extension plate 104 to isolate the grouting layer 8 from the outlet end of the water seal water supply pipe 105 and the secondary drainage pipe 106 of the caisson, thereby preventing the water flowing out of the outlet end of the water seal water supply pipe 105 and the secondary drainage pipe 106 of the caisson from entering the grouting layer 8.

[0062] The water seal water supplement pipe 105 is arranged to supplement water for the water seal bend inside the water seal groove 403, so as to prevent the water seal from drying up and failing. Specifically, the bathroom basin drain pipe supplies water to the water seal water supplement pipe 105 through the HDPE hose, the water flows into the first inner pipe 201 of the embedded sleeve 2 through the water seal water supplement pipe 105, and finally flows downward along the gap between the first inner pipe 201 and the connecting straight pipe 3 into the water seal groove 403 to supplement water for the water seal bend.

[0063] The caisson secondary drainage pipe 106 is arranged to drain the accumulated water in the bathroom caisson. The accumulated water in the bathroom caisson first flows into the first inner pipe 201 of the embedded sleeve 2 through the bathroom caisson secondary drainage member, the HDPE hose and the caisson secondary drainage pipe 106 in sequence; then, the accumulated water flows downward along the gap between the first inner pipe 201 and the connecting straight pipe 3 into the water seal groove 403; finally, the accumulated water flows into the second inner pipe 401 through the water seal bend inside the water seal groove 403, and is drained into the drainage riser of the lower layer module along the second inner pipe 401.

[0064] Further, the bottom surface of the extension plate 104 of the present embodiment is provided with an annular water dripping groove 107 around the water seal water supplement pipe 105 and the caisson secondary drainage pipe 106. Figure 3 The water dripping groove 107 is arranged to hinder the water dripping along the bottom surface of the extension plate 104 to the outside and into the bedding layer 8. That is, when the water dripping from the water seal water supplement pipe 105 and the caisson secondary drainage pipe 106 flows along the bottom surface of the extension plate 104 to the outside and meets the water dripping groove 107, the water dripping will be affected by gravity and move downward into the embedded sleeve 2.

[0065] Further, the annular rubber sleeve 203 of the embedded sleeve 2 is optionally sleeved with a protective cover to prevent the concrete from entering the embedded sleeve 2 and blocking the pipeline when the cast-in-place layer 7 is poured.

[0066] It should be noted that the water following tee 1 is pre-buried in the 60mm thick module concrete bottom plate 5 (building construction plate) in the factory, and the bottom surface of the extension plate 104 of the water following tee 1 is flush with the bottom surface of the module bottom plate 5. The pre-buried sleeve pipe 2 is pre-buried in the 60mm thick module concrete top plate 6 (laminated plate prefabricated layer) in the factory, and the bottom of the pre-buried sleeve pipe 2 is flush with the bottom surface of the module top plate 6. After the finished standardized module is hoisted and positioned on site, the cast-in-place layer 7 is poured on the module top plate 6, and the surface of the cast-in-place layer 7 is 5mm higher than the water accumulation section 205 on the pre-buried sleeve pipe 2, which makes the water in the bedding layer 8 collected through the water accumulation section 205, and the protective cover brought by the annular rubber sleeve 203 can prevent concrete from entering the pre-buried sleeve pipe 2. After pouring is completed, the protective cover is removed, and the upper module is positioned. When the upper module is hoisted and positioned, the top of the annular rubber sleeve 203 is in contact with the bottom surface of the extension plate 104 of the water following tee 1 of the upper module, which prevents water from leaking and overflowing of the water flow of the secondary drainage of the bathroom tank.

[0067] In the embodiment, the sill height of the overflow drainage hole 206 is 6-10mm, so that the sediment tank 204 located below the water accumulation section 205 is formed between the first inner pipe 201 and the first outer pipe 202. In use, the water in the bedding layer 8 enters the sediment tank 204 inside the pre-buried sleeve pipe 2, and then overflows into the gap between the first inner pipe 201 and the connecting straight pipe 3, while the sediment in the water is left in the sediment tank 204. It should be noted that the sill height of the overflow drainage hole 206 refers to the distance between the bottom wall of the space enclosed by the first inner pipe 201 and the first outer pipe 202 and the lower wall surface of the overflow drainage hole 206.

[0068] Referring to Figure 5 and Figure 8 , the lower end of the first inner pipe 201 extends outward to form a spinning connection port 207, and the inner wall surface of the spinning connection port 207 is circumferentially spaced apart a plurality of first spinning fixing members 209, and the outer wall surface of the upper end of the second outer pipe 402 is circumferentially spaced apart a plurality of second spinning fixing members 405, and the second spinning fixing members 405 are spinning connected with the first spinning fixing members 209.

[0069] It should be noted that during installation, the second spinning fixing members 405 on the second outer pipe 402 are positionally offset from the first spinning fixing members 209 on the first inner pipe 201, the water seal fixing pipe 4 moves the second spinning fixing members 405 on the second outer pipe 402 into the spinning connection port 207 of the first inner pipe 201 in the axial direction, and then rotates in the circumferential direction to make the second spinning fixing members 405 coincide with the first spinning fixing members 209, thereby forming a spinning connection.

[0070] Further, a first sealing rubber ring 208 is arranged between the upper end of the second outer pipe 402 and the spinning connection port 207 to prevent water leakage in the pipe.

[0071] In combination Figure 6 , Figure 7 and Figure 10 , as shown, a limiting edge 304 is arranged on the outer side wall of the connecting section 303 of the connecting straight pipe 3, and the limiting edge 304 abuts against the bottom surface of the spinning connection port 207 to ensure that there is a gap between the spinning connection port 207 and the connecting section 303 for water flow.

[0072] It should be noted that the length of the first pipe section 301 of the connecting straight pipe 3 remains unchanged, and the limiting edge 304 adjusts the insertion depth of the first pipe section 301 and the lower socket 102 of the water-following tee 1, thereby adjusting the vertical deviation of the bedding layer 8. Specifically, when the upper module is hoisted on the lower module, the thickness of the bedding layer may not be 20 mm. Due to the existence of the limiting edge 304, which can adjust the insertion depth of the first pipe section 301 and the lower socket 102, the thickness of the bedding layer is allowed to have a vertical deviation of ±10 mm. Within this error range, the multifunctional combined pipe fitting of the embodiment can still be normally assembled and operated, and the insertion part of the first pipe section 301 and the water-following tee 1 does not leak water. Further, the diameter of the upper end of the first pipe section 301 of the connecting straight pipe 3 is unchanged, and the diameter of the lower end of the first pipe section 301 gradually decreases. The purpose of such arrangement is to increase the gap between the first pipe section 301 and the embedded sleeve 2 to facilitate deviation adjustment. Specifically, when the upper module is hoisted on the lower module, the water-following tee 1 may not be directly above the embedded sleeve 2. Due to the existence of a larger gap between the first pipe section 301 and the embedded sleeve 2, the water-following tee 1 and the embedded sleeve 2 are allowed to have a horizontal deviation of ±10 mm. Within this error range, the multifunctional combined pipe fitting of the embodiment can still be normally assembled and operated without water leakage and odor return.

[0073] Referring to Figure 8 and Figure 9 , a plurality of overflow drainage notches 404 are arranged on the upper end edge of the second inner pipe 401 of the water seal fixed pipe fitting 4 to ensure that there is a gap between the lower surface of the connecting section 303 and the upper end of the second inner pipe 401 for the overflow of the accumulated water in the water seal groove 403 into the second inner pipe 401.

[0074] Further, the lower end of the second inner pipe 401 is a flexible socket joint 406 for insertion of the drainage riser of the lower module. The flexible socket joint 406 can be integrated with the expansion joint, and the flexible socket joint 406 is provided with an excess socket depth to form a water seal fixed and expansion joint integrated pipe fitting, which cancels the expansion joint of the lower drainage riser connection, i.e. reduces the upper and lower two interfaces at one expansion joint, thereby reducing the water leakage risk of the drainage riser.

[0075] In the description of the application, it is necessary to understand that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0076] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0077] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0078] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0079] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A multi-functional combined pipe fitting suitable for modular integrated building pipe through floor, characterized in that: include: The water-flow tee (1) is used to be installed in the bottom plate (5) of the upper module and has an upper bearing (101), a lower bearing (102) and a side bearing (103); An embedded sleeve (2) is used to be installed in the top plate (6) of the lower module. It includes a first inner pipe (201). The middle part of the outer wall of the first inner pipe (201) extends outward first and then upward to form a first outer pipe (202). A water collection section (205) is formed between the upper end of the first inner pipe (201) and the upper end of the first outer pipe (202). An overflow drainage hole (206) communicating with the water collection section (205) is opened on the pipe wall of the first inner pipe (201). The connecting straight pipe (3) includes a first pipe section (301), a second pipe section (302) with a diameter larger than the first pipe section (301), and a connecting section (303) connecting the first pipe section (301) and the second pipe section (302). The upper end of the first pipe section (301) passes through the first inner pipe (201) and is inserted into the lower socket (102). The water seal fixing pipe fitting (4) includes a second inner pipe (401). The middle part of the outer side wall of the second inner pipe (401) extends outward and then upward to form a second outer pipe (402). The second inner pipe (401) and the second outer pipe (402) surround each other to form a water seal groove (403). The second pipe section (302) is inserted into the water seal groove (403) to form a water seal bend in the water seal groove (403). The upper end of the second outer pipe (402) is detachably connected to the lower end of the first inner pipe (201). The lower end of the first inner tube (201) extends outward to form a spinning connection port (207). The inner wall surface of the spinning connection port (207) is provided with a plurality of first spinning fasteners (209) spaced apart in the circumferential direction. The outer wall surface of the upper end of the second outer tube (402) is provided with a plurality of second spinning fasteners (405) spaced apart in the circumferential direction. The second spinning fasteners (405) are spun together with the first spinning fasteners (209). A first sealing rubber ring (208) is provided between the upper end of the second outer tube (402) and the spun connection port (207) to prevent water leakage in the pipe; A limiting rib (304) is provided on the outer wall of the connecting section (303) of the straight pipe (3). The limiting rib (304) abuts against the bottom surface of the spun connection port (207) to ensure that there is a gap between the spun connection port (207) and the connecting section (303) for water supply to pass through. The upper end edge of the second inner pipe (401) of the water seal fixing pipe fitting (4) is provided with multiple overflow drainage gaps (404) to ensure that there is a gap between the lower surface of the connecting section (303) and the upper end of the second inner pipe (401) so that the water accumulated in the water seal groove (403) overflows into the second inner pipe (401); The water-flow tee (1) extends outward from the edge of the lower socket (102) to form an extension plate (104). A water seal water supply pipe (105) is installed on the extension plate (104). The water seal water supply pipe (105) is connected to the bathroom sink drain pipe through a flexible hose. The embedded sleeve (2) is provided with an annular rubber sleeve (203) on the outer wall surface of the first inner tube (201), the upper end of the annular rubber sleeve (203) abuts against the bottom surface of the extension plate (104), so as to separate the sitting mortar layer (8) from the water outlet end of the water seal water supply pipe (105); The extension plate (104) is further provided with a caisson secondary drainage pipe (106), and the caisson secondary drainage pipe (106) is connected with the sanitary room caisson secondary drainage component through a hose.

2. The multi-functional combination tube according to claim 1, wherein: The upper end of the first pipe section (301) of the connecting straight pipe (3) is of a constant diameter, and the diameter of the lower end of the first pipe section (301) gradually decreases.

3. The multi-functional combination tube of claim 1, wherein: The sill height of the overflow drainage hole (206) is 6-10 mm, so that a sediment groove (204) is formed between the first inner tube (201) and the first outer tube (202) below the water accumulation collection section (205).

4. The multi-functional combination tube of claim 1, wherein: The bottom surface of the extension plate (104) is provided with an annular water droplet groove (107) around the water outlet end of the water seal water supply pipe (105) and the caisson secondary drainage pipe (106), so as to hinder water droplets from flowing outward and overflowing along the bottom surface of the extension plate (104).

5. The multi-functional combination tube according to any one of claims 1 to 4, characterized in that: The upper bearing (101) is inserted with the drainage vertical pipe of the upper layer module, the side bearing (103) is connected with the drainage horizontal pipe of the sanitary room of the upper layer module, and the lower end of the second inner tube (401) is inserted with the drainage vertical pipe of the lower layer module.

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