PVC water drain pipe suitable for being installed in advance

Abstract

The PVC water drain pipe comprises a PVC pipe, a metal pipe and a flow guide pipe, the PVC pipe is sleeved with the metal pipe, the side, close to the bottom end, of the metal pipe is fixedly connected with a first annular plate, and the side, close to the first annular plate, of the outer side of the PVC pipe is fixedly connected with a second annular plate; the first circular ring plate and the second circular ring plate are connected through a plurality of evenly-arranged bolts, the bottom of the flow guide pipe is fixedly connected with an inserting part, the inserting part is in matched inserting connection with the top of the metal pipe, and the inner surface of the flow guide pipe is fixedly connected with an attaching part attached to the top of the PVC pipe. By means of the structure, the PVC pipe, the metal pipe and the flow guide pipe form an embedded part which can be directly embedded in a building body for pouring installation, the tedious operation that the PVC pipe needs to be installed again after the metal pipe is embedded is avoided, and installation work is more convenient, rapid and efficient; and the PVC pipe, the metal pipe and the flow guide pipe are all in modular connection in a movable connection mode, and maintenance and replacement of the water drainage pipe are also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of building drainage, and particularly relates to a PVC drain pipe suitable for pre-installation. Background Technique

[0002] Building drain pipes are an indispensable part of modern building drainage systems, mainly used for collecting and discharging rainwater, sewage and other liquids to ensure the safety of buildings and the sanitation of the environment. PVC drain pipes are widely used in building drainage systems due to their light weight and corrosion resistance.

[0003] In the prior art, through retrieval, it is found that the Chinese patent discloses "a drain pipe suitable for pre-installation", and its application number is "201921992012.1". The above patent mainly includes a steel pipe, a plastic pipe and a PVC pipe. The upper inlet of the steel pipe is funnel-shaped. The lower part of the steel pipe near the opening is fixedly connected with the plastic pipe. The upper end of the plastic pipe is fixed on the outer wall of the steel pipe. There is a gap between the plastic pipe and the steel pipe to form an annular socket. The PVC pipe is slidably inserted into the annular socket. Pre-installing the drain pipe saves the cost and time of making reserved holes, and the drain pipe is more tightly connected to the beam body, preventing rainwater from seeping out from the gap between the drain pipe and the beam body. However, the installation work of the above drain pipe requires installing the PVC pipe through the cooperation of grooves and bumps after the metal pipe is buried, and the installation work of the PVC pipe needs to be completed through another operation, which is cumbersome and not conducive to improving the construction efficiency of the drain pipe; in addition, the rigid connection method between the steel pipe and the plastic pipe is not conducive to the replacement work of local damage of the drain pipe when necessary, and the overall replacement does not have good economy. Therefore, the utility model provides a PVC drain pipe suitable for pre-installation to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a PVC drain pipe suitable for pre-installation. The PVC pipe, the metal pipe and the diversion pipe form a pre-embedded part and can be directly embedded inside the building body for casting installation, avoiding the cumbersome operation of installing the PVC pipe again after the metal pipe is buried. The installation work is more convenient and efficient; and the PVC pipe, the metal pipe and the diversion pipe are all modularly connected through a movable connection method, which is also convenient for the maintenance and replacement of the drain pipe, and has strong practicability.

[0005] To achieve the above object, a PVC drain pipe suitable for pre-installation is provided, which includes a PVC pipe, a metal pipe, and a diversion pipe. The metal pipe is sleeved outside the PVC pipe. A first circular ring plate is fixedly connected to one side of the metal pipe near the bottom end. A second circular ring plate is fixedly connected to one side of the PVC pipe outside and near the first circular ring plate. The first circular ring plate and the second circular ring plate are connected by a plurality of uniformly arranged bolts. A plug-in part is fixedly connected to the bottom of the diversion pipe, and the plug-in part is in interference fit with the top of the metal pipe. A fitting part that fits against the top of the PVC pipe is fixedly connected to the inner surface of the diversion pipe.

[0006] According to the described PVC drain pipe suitable for pre-installation, a sealing ring is embedded inside one side of the fitting part close to the top of the PVC pipe.

[0007] According to the described PVC drain pipe suitable for pre-installation, a circular ring-shaped support plate is fixedly connected to one side of the inner surface of the diversion pipe near the middle, and a filter top cover is provided on the top of the support plate.

[0008] According to the described PVC drain pipe suitable for pre-installation, a plurality of groove parts are uniformly arranged on the outer surface of the metal pipe.

[0009] According to the described PVC drain pipe suitable for pre-installation, the diversion pipe is made of metal material, and the fitting part and the diversion pipe are of an integral structure.

[0010] According to the described PVC drain pipe suitable for pre-installation, the filter top cover is arranged lower than the top of the diversion pipe, and the diversion pipe and the metal pipe are in interference fit and plugged.

[0011] The utility model has the following beneficial effects:

[0012] Compared with the prior art, for the described PVC drain pipe suitable for pre-installation, the PVC pipe, the metal pipe, and the diversion pipe form a pre-embedded part that can be directly embedded inside the building body for casting and installation. The connection is stable, and the sealing effect at the connection is good, avoiding the cumbersome operation of reinstalling the PVC pipe after the metal pipe is buried. The installation work of the drain pipe is more convenient and efficient; moreover, the PVC pipe, the metal pipe, and the diversion pipe are all modularly connected through a movable connection method, which is also convenient for the maintenance and replacement of the drain pipe, and has strong practicability.

[0013] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further illustrates the utility model in conjunction with the drawings and embodiments;

[0015] Figure 1 The first overall structural schematic diagram of a PVC drain pipe applicable to pre-installation for the present utility model;

[0016] Figure 2 The second overall structural schematic diagram of a PVC drain pipe applicable to pre-installation for the present utility model;

[0017] Figure 3 The overall sectional structural schematic diagram of a PVC drain pipe applicable to pre-installation for the present utility model;

[0018] Figure 4 For a PVC drain pipe applicable to pre-installation for the present utility model Figure 3 The enlarged structural schematic diagram at position A.

[0019] Legend description:

[0020] 1. PVC pipe; 2. metal pipe; 3. diversion pipe; 4. insertion part; 5. first circular ring plate; 6. second circular ring plate; 7. filter top cover; 8. groove part; 9. sealing ring; 10. fitting part; 11. support plate. Specific implementation manners

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0022] Referring to Figures 1-4 , in an embodiment of the present utility model, a PVC drain pipe applicable to pre-installation includes a PVC pipe 1, a metal pipe 2, and a diversion pipe 3. The metal pipe 2 is sleeved outside the PVC pipe 1. A first circular ring plate 5 is fixedly connected to one side of the metal pipe 2 near the bottom end. A second circular ring plate 6 is fixedly connected to one side of the PVC pipe 1 outside and near the first circular ring plate 5. The first circular ring plate 5 and the second circular ring plate 6 are connected by a plurality of uniformly arranged bolts. The bottom of the diversion pipe 3 is fixedly connected with an insertion part 4, and the insertion part 4 is in interference fit and inserted with the top of the metal pipe 2. A fitting part 10 that fits against the top of the PVC pipe 1 is fixedly connected to the inner surface of the diversion pipe 3. The fitting part 10 can achieve a sealing effect at the connection between the metal pipe 2 and the PVC pipe 1 to ensure a tight connection between the diversion pipe 3 and the metal pipe 2, thereby preventing water leakage.

[0023] Insert the PVC pipe 1 into the interior of the metal pipe 2 so that the second annular plate 6 fits against the first annular plate 5. Use bolts to connect the first annular plate 5 and the second annular plate 6 to complete the installation of the metal pipe 2 and the PVC pipe 1. Then, insert the diversion pipe 3 into the top of the metal pipe 2 through the insertion part 4 so that the top end of the PVC pipe 1 fits against the bottom side of the fitting part 10, and the installation of the diversion pipe 3 and the metal pipe 2 can be completed. Thus, a pre-embedded part is formed among the PVC pipe 1, the metal pipe 2 and the diversion pipe 3, which can be directly embedded inside the building body for casting installation. The connection is stable, and the sealing effect at the connection is good, avoiding the cumbersome operation of reinstalling the PVC pipe 1 after the metal pipe 2 is embedded. The installation work of the drain pipe is more convenient and efficient. Moreover, the PVC pipe 1, the metal pipe 2 and the diversion pipe 3 are all modularly connected by means of movable connection, which is also convenient for the maintenance and replacement of the drain pipe, and has strong practicability.

[0024] A sealing ring 9 is embedded inside one side of the fitting part 10 close to the top of the PVC pipe 1 to enhance the sealing between the metal pipe 2 and the PVC pipe 1. Moreover, the fitting part 10 and the diversion pipe 3 are set as an integral structure, which simplifies the manufacturing process and avoids water leakage at the connection.

[0025] A circular ring-shaped support plate 11 is fixedly connected to one side of the inner surface of the diversion pipe 3 close to the middle. A filter top cover 7 is arranged on the top of the support plate 11, which effectively prevents sundries from entering the pipe and ensures the smoothness of the drainage system. The filter top cover 7 is arranged lower than the top of the diversion pipe 3 to avoid the compression deformation or damage of the filter top cover 7.

[0026] The diversion pipe 3 is made of metal material to avoid the pressure deformation of the diversion pipe 3 located at the top, which affects the drainage effect. A plurality of groove parts 8 are evenly arranged on the outer surface of the metal pipe 2 to increase its surface area and improve the grasping force between it and the concrete.

[0027] Working principle: Insert the PVC pipe 1 into the interior of the metal pipe 2 so that the second annular plate 6 fits against the first annular plate 5. Use bolts to connect the first annular plate 5 and the second annular plate 6 to complete the installation of the metal pipe 2 and the PVC pipe 1. Then, insert the diversion pipe 3 into the top of the metal pipe 2 through the insertion part 4 so that the top end of the PVC pipe 1 fits against the bottom side of the fitting part 10, and the installation of the diversion pipe 3 and the metal pipe 2 can be completed. Thus, a pre-embedded part is formed among the PVC pipe 1, the metal pipe 2 and the diversion pipe 3, which can be directly embedded inside the building body for casting installation. The connection is stable, and the sealing effect at the connection is good, avoiding the cumbersome operation of reinstalling the PVC pipe 1 after the metal pipe 2 is embedded. The installation work of the drain pipe is more convenient and efficient. Moreover, the PVC pipe 1, the metal pipe 2 and the diversion pipe 3 are all modularly connected by means of movable connection, which is also convenient for the maintenance and replacement of the drain pipe, and has strong practicability.

[0028] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A PVC drain pipe suitable for pre-installation, characterized in that, It includes a PVC pipe (1), a metal pipe (2) and a diversion pipe (3). The metal pipe (2) is sleeved on the outside of the PVC pipe (1). A first circular ring plate (5) is fixedly connected to one side of the metal pipe (2) near the bottom end. A second circular ring plate (6) is fixedly connected to the outside of the PVC pipe (1) and near the first circular ring plate (5). The first circular ring plate (5) and the second circular ring plate (6) are connected by a plurality of uniformly arranged bolts. A plug-in part (4) is fixedly connected to the bottom of the diversion pipe (3), and the plug-in part (4) is in plug-in fit with the top of the metal pipe (2). A fitting part (10) that fits against the top of the PVC pipe (1) is fixedly connected to the inner surface of the diversion pipe (3).

2. The PVC drain pipe applicable to pre-installation according to claim 1, characterized in that A sealing ring (9) is embedded inside one side of the fitting part (10) near the top of the PVC pipe (1).

3. A PVC drain pipe suitable for pre-installation according to claim 2, characterized in that, A circular ring-shaped support plate (11) is fixedly connected to one side of the inner surface of the diversion pipe (3) near the middle, and a filter top cover (7) is provided on the top of the support plate (11).

4. A PVC drain pipe suitable for pre-installation according to claim 3, characterized in that, A plurality of groove parts (8) are uniformly arranged on the outer surface of the metal pipe (2).

5. A PVC drain pipe suitable for pre-installation according to claim 4, characterized in that, The diversion pipe (3) is made of a metal material, and the fitting part (10) and the diversion pipe (3) are of an integral structure.

6. The PVC drain pipe applicable to pre-installation according to claim 5, wherein, The filter top cover (7) is arranged lower than the top of the diversion pipe (3), and the diversion pipe (3) and the metal pipe (2) are in interference fit and plug-in connection.

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