Drainage embedded pipe fitting of flexible socket mute drainage system

Abstract

The utility model provides a drainage embedded pipe fitting of a flexible socket mute drainage system. The drainage embedded pipe fitting comprises an embedded part used for being embedded in a concrete layer and a telescopic part arranged at the top of the embedded part and communicating with the embedded part. And the telescopic part and the embedded part are integrally formed. The telescopic part is used for enabling the drainage pipe to be movably arranged relative to the telescopic part in the axial direction. The drainage embedded pipe fitting of the flexible socket mute drainage system can adapt to concrete layers with different thicknesses, the types and the number of accessories are reduced, and the leakage risk is reduced.

Description

Technical Field

[0001] This application relates to the technical field of water supply and drainage, and specifically relates to a drainage pre-embedded pipe fitting for a flexible socket joint silent drainage system. Background Art

[0002] In house construction, the drain pipes of upper and lower floors need to be connected. Therefore, before the construction of the drain pipes in the house, pre-embedded parts are generally set in the concrete layer to facilitate the subsequent installation of the vertically connected drain pipes. During the use of the drain pipes, due to the influence of the external environmental temperature, there is a phenomenon of thermal expansion and contraction. In order to prevent the drain pipes from bending or breaking due to thermal expansion and contraction, expansion joints are needed to achieve expansion and contraction compensation.

[0003] However, the existing pre-embedded parts and expansion joints have the following problems: First, due to the different thicknesses of the concrete layer, the pre-embedded parts with the same nominal outer diameter also have different heights. Common pre-embedded parts are 10 cm, 12 cm, 13 cm, 15 cm, 18 cm. Therefore, it is necessary to support a variety of specifications of molds for production and manufacturing, which increases the cost investment and product inventory; Second, in order to ensure the stability of the pipe fittings and avoid leakage accidents, the outer wall of the expansion joint needs to be fixed with pipe clamps. Different specifications of expansion joints need to be fixed with corresponding specifications of pipe clamps, which increases the types and quantities of accessories; Third, connecting pieces are provided between the expansion joint and the upper drain pipe and the lower drain pipe, which not only increases the types and quantities of accessories, but also increases the probability of leakage of the drain pipe. Therefore, there is an urgent need for a drainage device that can adapt to different concrete layer heights, reduce the types and quantities of accessories, and reduce the leakage risk of the drain pipe to solve the above problems.

[0004] The information disclosed in this background art section is only for enhancing the understanding of the background art of the present disclosure, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] In view of the above problems, a drainage pre-embedded pipe fitting for a flexible socket joint silent drainage system is provided. This drainage pre-embedded pipe fitting can adapt to concrete layers of different thicknesses, reduce the types and quantities of accessories, and reduce the leakage risk.

[0006] Specifically, this application provides a drainage pre-embedded pipe fitting for a flexible socket joint silent drainage system, including a pre-embedded part for being pre-embedded in a concrete layer and an expansion part provided at the top of the pre-embedded part and communicating with the pre-embedded part; the expansion part and the pre-embedded part are integrally formed; the expansion part is used for the drain pipe to be movably arranged along its axial direction relative to the expansion part.

[0007] Optionally, the embedded part includes a first installation cylinder, an annular rib plate arranged on the outer wall of the first installation cylinder along its circumferential direction, and a first longitudinal rib plate arranged on the outer wall of the first installation cylinder along its axial direction.

[0008] Optionally, the embedded part further includes an annular fixing plate arranged at the bottom of the first installation cylinder, and uniformly distributed installation holes are formed along the circumferential direction of the annular fixing plate.

[0009] Optionally, the embedded part further includes a bottom annular gland and a first sealing ring; the first installation cylinder includes a first cylinder section and a second cylinder section communicating with the top end of the first cylinder section, and the inner diameter of the second cylinder section is smaller than that of the first cylinder section to form a first installation step surface; a slot for inserting a drain pipe is formed on the inner wall of the second cylinder section; the bottom annular gland is arranged at the lower opening of the first cylinder section and is snap-fitted with the first cylinder section, so that the first sealing ring is pressed against the first installation step surface.

[0010] Optionally, the telescopic part includes a second installation cylinder, an annular clamping groove arranged at the upper end of the inner wall of the second installation cylinder, and a second sealing ring correspondingly arranged in the annular clamping groove.

[0011] Optionally, the telescopic part includes a second installation cylinder, a top annular gland and a second sealing ring; the second installation cylinder includes a third cylinder section and a fourth cylinder section communicating with the top end of the third cylinder section, and the inner diameter of the fourth cylinder section is larger than that of the third cylinder section to form a second installation step surface; the top annular gland is arranged at the upper opening of the fourth cylinder section and is snap-fitted / threaded with the fourth cylinder section, so that the second sealing ring is pressed against the second installation step surface.

[0012] Optionally, a second longitudinal rib plate is arranged on the outer wall of the second installation cylinder along its axial direction.

[0013] Optionally, scale values for indicating its height are arranged on the outer wall of the drainage embedded pipe fitting along its axial direction.

[0014] The embedded drainage pipe fittings of the present application have both water-stopping and expansion / contraction functions because they have an embedded portion and an expansion / contraction portion. On the one hand, because space is reserved in the expansion / contraction portion for the drainage pipe due to temperature changes, the height of the embedded drainage pipe fittings can meet the requirements of concrete layers of different thicknesses. Therefore, only one mold specification is needed to produce the embedded drainage pipe fittings, thereby reducing cost investment and product inventory. On the other hand, the embedded portion is cast in the concrete layer, and the expansion / contraction portion is fixed by the embedded portion, so that the expansion / contraction portion is more firmly fixed without the need for pipe clamps, thereby reducing the types and number of accessories. On the other hand, the expansion / contraction portion and the embedded portion are integrally formed, so that there is no connector between the expansion / contraction portion and the embedded portion, which not only reduces the types and number of accessories, but also reduces the risk of leakage.

[0015] Based on the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the pre-buried drainage pipes in an embodiment of the present application.

[0017] Figure 2 This is a schematic structural diagram of the pre-buried drainage pipe in another embodiment of the present application.

[0018] Figure 3 This is a schematic structural diagram of the pre-buried drainage pipe in another embodiment of the present application.

[0019] In the above figures, 110 is the embedded part, 111 is the first mounting tube, 112 is the annular rib, 113 is the first longitudinal rib, 114 is the annular fixing plate, 115 is the mounting hole, 116 is the bottom annular pressure cover, 117 is the first sealing ring, 118 is the slot, 120 is the telescopic part, 121 is the second mounting tube, 122 is the second sealing ring, 124 is the second longitudinal rib, 125 is the first top annular pressure cover, and 126 is the second top annular pressure cover. DETAILED DESCRIPTION

[0020] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on this application. The terms "first", "second", etc. mentioned in this application are used to distinguish the objects described and do not have any order or technical meaning. The terms "connection" and "connection" mentioned in this application, unless otherwise specified, include direct and indirect connections (connections).

[0021] Figure 1 This is a schematic structural diagram of the pre-buried drainage pipe in the embodiment of the present application, as shown in FIG. Figure 1 As shown, and reference Figure 2 and Figure 3 The present invention provides a pre-embedded drainage pipe fitting for a flexible socket-and-spigot silent drainage system. The pre-embedded drainage pipe fitting includes an embedded portion 110 for embedding in a concrete layer and a telescopic portion 120 disposed on top of and connected to the embedded portion 110. The telescopic portion 120 is integrally formed with the embedded portion 110. The telescopic portion 120 is configured to allow the drainage pipe to be movably disposed relative to the telescopic portion 120 along its axial direction.

[0022] In the embedded drainage pipe fittings of the embodiment of the present application, during construction, the embedded drainage pipe fittings are fixed on the building formwork, and then concrete is poured, so that the embedded drainage pipe fittings are embedded in the concrete layer, so that the embedded drainage pipe fittings are more tightly combined with the concrete layer, preventing the concrete around the embedded drainage pipe fittings from cracking. Compared with the traditional method of reserving holes in the floor, the leakage of the reserved holes caused by loose filling, shrinkage, etc. during installation is avoided, that is, the embedded drainage pipe fittings of this embodiment have a water-stopping function.

[0023] The embedded drainage pipe fitting of the embodiment of the present application has the embedded portion 110 and the telescopic portion 120 , so that the embedded drainage pipe fitting has both a water-stopping function and a drainage pipe telescopic function.

[0024] On the one hand, because the expansion section 120 reserves space for the drainage pipe to expand and contract due to temperature changes, the height of the pre-buried drainage pipe can meet the requirements of concrete layers of different thicknesses. Therefore, only one mold specification can be used to produce the pre-buried drainage pipe, thereby reducing costs and product inventory. For example, the pre-buried drainage pipe can be used for concrete layers of thicknesses of 10 cm, 12 cm, 13 cm, 15 cm, and 18 cm.

[0025] On the other hand, the embedded part 110 is cast in the concrete layer, and the telescopic part 120 is fixed by the embedded part 110, so that the telescopic part 120 is firmly fixed without using pipe clamps, thereby reducing the types and number of accessories.

[0026] On the other hand, the telescopic portion 120 and the embedded portion 110 are integrally formed, so that there is no connector between the telescopic portion 120 and the embedded portion 110, which not only reduces the type and number of accessories but also reduces the risk of leakage. The embedded drainage pipe fittings of the present application are suitable for use in flexible socket-and-spigot silent drainage systems.

[0027] In some embodiments of the present application, Figures 1 to 3 As shown, the embedded portion 110 includes a first installation tube 111, an annular rib 112 provided on the outer wall of the first installation tube 111 and arranged along its circumference, and a first longitudinal rib 113 provided on the outer wall of the first installation tube 111 and arranged along its axial direction.

[0028] In the embodiment of the present application, during concrete pouring, the presence of annular ribs 112 increases the contact area between the concrete and the embedded portion 110, creating a tighter bond between the concrete and the embedded portion 110. This in turn provides a more secure fixation of the embedded portion 110 and a better water-stopping effect. The longitudinal ribs enhance the structural strength of the first mounting tube 111 and also provide a tighter bond between the concrete and the embedded portion 110.

[0029] In some embodiments of the present application, Figures 1 to 3 As shown, the embedded portion 110 further includes an annular fixing plate 114 disposed at the bottom of the first mounting tube 111 , and the annular fixing plate 114 is provided with evenly distributed mounting holes 115 along its circumference.

[0030] In the embodiment of the present application, during construction, the pre-embedded drainage pipe fittings are secured to the building formwork through the mounting holes 115, and then concrete is poured, embedding the pre-embedded drainage pipe fittings within the concrete layer. The provision of mounting holes 115 facilitates positioning and embedding of the pre-embedded drainage pipe fittings. For example, screws or nails can be inserted through mounting holes 115 to secure the pre-embedded drainage pipe fittings to the building formwork.

[0031] In some embodiments of the present application, Figures 1 to 3As shown, the embedded part 110 further includes a bottom annular gland 116 and a first sealing ring 117. The first installation cylinder 111 includes a first cylinder section and a second cylinder section communicating with the top end of the first cylinder section. The inner diameter of the second cylinder section is smaller than that of the first cylinder section to form a first installation step surface. A slot 118 for inserting a drain pipe is formed on the inner wall of the second cylinder section. The bottom annular gland 116 is arranged at the lower opening of the first cylinder section and is snap-fitted with the first cylinder section, so that the first sealing ring 117 is pressed tightly at the first installation step surface. The first sealing ring 117 in the embodiment of the present application can be a K-type sealing ring. Of course, other types of sealing rings can also be selected according to needs. In the embodiment of the present application, the lower end of the drain pipe is directly inserted into the first installation cylinder 111 through the lower opening of the first installation cylinder 111 and inserted into the slot 118. The first sealing ring 117 presses tightly against the outer wall of the drain pipe to play a sealing role.

[0032] In some embodiments of the present application, as Figures 1 to 3 shown, the bottom annular gland 116 includes a first annular mounting plate arranged along the axial direction of the first installation cylinder 111 and a first pressing plate arranged on the inner side of the top end of the first annular mounting plate. An installation groove is arranged on the outer wall of the first annular mounting plate along its circumferential direction, and a corresponding installation protrusion is arranged on the inner wall of the first cylinder section to cooperate with the installation groove.

[0033] In the embodiment of the present application, the first sealing ring 117 is first placed on the first installation step surface, and then the bottom annular gland 116 is pressed into the first installation cylinder 111 from the lower opening of the first cylinder section until the installation protrusion is inserted into the installation groove. At this time, the first pressing plate also presses tightly against the first sealing ring 117. In the embodiment of the present application, due to the snap-fit between the installation groove and the installation protrusion, the installation of the bottom annular gland 116 and the first installation cylinder 111 is simple, and the bottom annular gland 116 is convenient to disassemble.

[0034] In some embodiments of the present application, as Figure 1 shown, the telescopic part 120 includes a second installation cylinder 121, an annular clamping groove arranged at the upper end of the inner wall of the second installation cylinder 121, and a second sealing ring 122 correspondingly arranged in the annular clamping groove. The second sealing ring 122 in the embodiment of the present application can be a K-type sealing ring. Of course, other types of sealing rings can also be selected according to needs.

[0035] In the embodiment of the present application, the lower end of the drain pipe is directly inserted into the second installation cylinder 121 through the upper opening of the second installation cylinder 121. The second sealing ring 122 presses tightly against the outer wall of the drain pipe to play a sealing role. Since the connection between the drain pipe and the telescopic part 120 is a flexible connection, the drain pipe can perform a short-distance displacement along the axial direction of the drain pipe under the action of thermal expansion and contraction, so that the telescopic part 120 has a telescopic function and can prevent the drain pipe from being bent or broken due to thermal expansion and contraction. The structure of the telescopic part 120 in the embodiment of the present application is simple and convenient to install.

[0036] In some embodiments of the present application, as Figure 2 shown, the telescopic part 120 includes a second mounting cylinder 121, a first top annular gland 125, and a second sealing ring 122. The second mounting cylinder 121 includes a third cylinder section and a fourth cylinder section communicating with the top end of the third cylinder section. The inner diameter of the fourth cylinder section is larger than that of the third cylinder section to form a second mounting step surface. The first top annular gland 125 is arranged at the upper end opening of the fourth cylinder section and is snap-fitted with the fourth cylinder section, so that the second sealing ring 122 is pressed tightly at the second mounting step surface. The structure of the first top annular gland 125 is the same as that of the bottom annular gland 116 and the installation method is the same, so it will not be elaborated here.

[0037] In the embodiments of the present application, the lower end of the drain pipe is directly inserted into the second mounting cylinder 121 through the upper end opening of the second mounting cylinder 121, and the second sealing ring 122 presses tightly against the outer wall of the drain pipe to play a sealing role. Since the connection between the drain pipe and the telescopic part 120 is a flexible connection, the drain pipe can perform a short-distance displacement along the axial direction of the drain pipe under the action of thermal expansion and contraction, so that the telescopic part 120 has a telescopic function and can prevent the drain pipe from being bent or broken due to thermal expansion and contraction. The structure of the telescopic part 120 in the embodiments of the present application is simple and the installation is convenient.

[0038] In some embodiments of the present application, as Figure 3 shown, the telescopic part 120 includes a second mounting cylinder 121, a second top annular gland 126, and a second sealing ring 122. The second mounting cylinder 121 includes a third cylinder section and a fourth cylinder section communicating with the top end of the third cylinder section. The inner diameter of the fourth cylinder section is larger than that of the third cylinder section to form a second mounting step surface. The second top annular gland 126 is arranged at the upper end opening of the fourth cylinder section and is threadedly engaged with the fourth cylinder section, so that the second sealing ring 122 is pressed tightly at the second mounting step surface. The second top annular gland 126 includes a second annular mounting plate arranged along the axial direction of the second mounting cylinder 121, a second pressing plate arranged inside the second annular mounting plate and coaxially with the second annular mounting plate, and a connecting plate connecting the top ends of the second annular mounting plate and the second pressing plate. An internal thread is provided on the inner wall of the second annular mounting plate, and an external thread matching the internal thread is provided on the outer wall of the fourth cylinder section.

[0039] In the embodiments of the present application, when installing the drain pipe, first make the drain pipe pass through the second top annular gland 126 from top to bottom and penetrate into the second mounting cylinder 121 to a proper position, and then rotate the second top annular gland 126 to make the internal thread of the second annular mounting plate cooperate with the external thread of the fourth cylinder section, and at the same time make the second pressing plate press tightly against the second sealing ring 122, so that the second sealing ring 122 deforms and presses tightly against the drain pipe. In the embodiments of the present application, the second top annular gland 126 is pressed tightly against the second sealing ring 122 in a spiral manner, and then the second sealing ring 122 seals the drain pipe, so that the sealing effect is good and the installation and disassembly are convenient.

[0040] In some embodiments of the present application, as Figures 1 to 3 shown, a second longitudinal rib plate 124 is provided along the axial direction on the outer wall of the second mounting cylinder 121. In the embodiments of the present application, the second longitudinal rib plate 124 makes the structural strength of the second mounting cylinder 121 higher.

[0041] In some embodiments of the present application, scale values for indicating its height are provided along the axial direction on the outer wall of the drainage pre-embedded pipe fitting. In the embodiments of the present application, since the scale values are provided on the outer wall of the drainage pre-embedded pipe fitting, it is convenient for construction workers to know the height of the concrete pouring layer, and thus the construction is facilitated.

[0042] Although some preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0043] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the application concept. Thus, if these modifications and variations to the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A drainage pre-embedded pipe fitting for a flexible socket-type silent drainage system, characterized in that It includes an embedded part for being embedded in a concrete layer and a telescopic part arranged at the top of the embedded part and communicated with the embedded part; the telescopic part and the embedded part are integrally formed; the telescopic part is used for the drain pipe to be movably arranged relative to the telescopic part along its axial direction.

2. The drainage embedded pipe fitting according to claim 1, wherein the embedded part includes a first installation cylinder, an annular rib plate arranged on the outer wall of the first installation cylinder and along its circumferential direction, and a first longitudinal rib plate arranged on the outer wall of the first installation cylinder and along its axial direction.

3. The drainage pre-embedded pipe fitting according to claim 2, characterized in that, The embedded part further includes an annular fixing plate arranged at the bottom of the first installation cylinder, and evenly distributed installation holes are formed along the circumferential direction of the annular fixing plate.

4. The drainage pre-embedded pipe fitting according to claim 2, characterized in that, The embedded part further includes a bottom annular gland and a first sealing ring; the first installation cylinder includes a first cylinder section and a second cylinder section communicating with the top end of the first cylinder section, and the inner diameter of the second cylinder section is smaller than that of the first cylinder section to form a first installation step surface; a slot for the drain pipe to be inserted is formed on the inner wall of the second cylinder section. The bottom annular gland is arranged at the lower end opening of the first cylinder section and is snap-fitted with the first cylinder section, so that the first sealing ring is pressed tightly at the first installation step surface.

5. The drainage pre-embedded pipe fitting according to claim 1, wherein The telescopic part includes a second installation cylinder, an annular clamping groove arranged at the upper end of the inner wall of the second installation cylinder, and a second sealing ring correspondingly arranged in the annular clamping groove.

6. The drainage pre-embedded pipe fitting according to claim 1, characterized in that, The telescopic part includes a second installation cylinder, a top annular gland and a second sealing ring; the second installation cylinder includes a third cylinder section and a fourth cylinder section communicating with the top end of the third cylinder section, and the inner diameter of the fourth cylinder section is larger than that of the third cylinder section to form a second installation step surface. The top annular gland is arranged at the upper end opening of the fourth cylinder section and is snap-fitted / threaded with the fourth cylinder section, so that the second sealing ring is pressed tightly at the second installation step surface.

7. The drainage pre-embedded pipe fitting according to any one of claims 5 or 6, characterized in that A second longitudinal rib plate is arranged along the axial direction on the outer wall of the second installation cylinder.

8. The drainage pre-embedded pipe fitting according to claim 1, characterized in that, Scale values for indicating its height are arranged along the axial direction on the outer wall of the drainage embedded pipe fitting.

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