A floor-penetrating sleeve-type pipe connection structure
By using PPR pipe smaller than cast iron pipes in old buildings instead of corroded cast iron pipes, and connecting them through a combination of threads and fill layers, the problem of rust and corrosion of cast iron pipes in old buildings is solved, and the corrosion resistance and service life of the pipeline are improved.
Patent Information
- Application Number
- CN202420900119.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The cast iron pipes in existing old buildings are rusted and corroded due to long-term use, and corrosion-resistant pipes need to be replaced, but how to effectively replace them during the replacement process and ensure that they do not affect the installation of the original pipes is a technical problem.
The corrosion-corrosive cast iron pipe is replaced by PPR tubes with smaller diameter than cast iron pipes and is installed with removable threads, ensuring the stability and balance of the connection using the edge fill layer and socket assembly.
It realizes effective replacement of rusted and corroded cast iron pipes without destroying the original structure, improving the corrosion resistance and service life of the pipes, and avoiding the problem of water leakage.
Smart Images
Figure CN222746864U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building pipeline maintenance, in particular to a floor-penetrating sleeve-type pipeline connection structure. Background Art
[0002] Some of the existing old residential buildings have been in use for more than 20 years. Twenty years ago, most of them used cast iron pipes as water inlet pipes. Since iron materials are prone to rust after long-term use, and cast iron pipes as pipes are often in contact with solutions, the probability of rust and corrosion is greater. Therefore, in order not to affect the normal use of the pipes, a corrosion-resistant pipe needs to be reinstalled. How to effectively replace the new pipe without affecting the original pipe installation is the technical problem we need to solve.
[0003] In order to solve the above problems, the utility model proposes a floor-penetrating sleeve-type pipe connection structure. Utility Model Content
[0004] The utility model aims to provide a floor-penetrating sleeve-type pipe connection structure to solve the technical problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sleeve-type pipe connection structure through a floor slab, comprising a cast iron pipe installed on the inner side of the floor slab and not requiring replacement, and a PPR pipe used to replace the corroded cast iron pipe, the diameter of the PPR pipe being smaller than the diameter of the cast iron pipe, and the PPR pipe and the cast iron pipe not requiring replacement being installed in a threaded and detachable manner; after assembly, the outer sides of the cast iron pipe and the outer sides of the PPR pipe are both paved with edge filling layers that are aligned and filled, the edge filling layers are installed with the floor slab outwardly, and the PPR pipe is provided with a first thread for matching use.
[0006] Preferably, the first thread is an external thread, a threaded pipe matching the PPR pipe is installed on the inner side of the cast iron pipe, and the threaded pipe is installed at the junction of the cast iron pipe and the PPR pipe.
[0007] Preferably, a second thread matching the first thread is provided inside the threaded pipe, and the threaded pipe is locked on the cast iron pipe by a fastening screw.
[0008] Preferably, a socket assembly is provided between the cast iron pipe and the PPR pipe, and the first thread on the PPR pipe is an internal thread that matches the third thread on the top of the socket assembly.
[0009] Preferably, the socket assembly further comprises a support arm for supporting the PPR pipe and the cast iron pipe in balance, a connecting pipe is provided on the inner side of the support arm, and an inlet diameter of the connecting pipe is consistent with an outlet diameter of the PPR pipe.
[0010] Preferably, the support arm is arranged in a Z shape.
[0011] Preferably, the support arm is provided with a right-angle step for facilitating transition.
[0012] Preferably, a gradually enlarging wide opening for discharging materials is provided between the connecting pipe and the supporting arm; after assembly, the wide opening for discharging materials extends to the interior of the cast iron pipe.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts PPR pipes with a smaller diameter than cast iron pipes to replace the original rusted and corroded cast iron pipes. On the one hand, in terms of material, compared with the original iron material, it has the advantage of being more corrosion-resistant and having a longer service life; on the other hand, by using the material of a "sleeve", the PPR pipe is inserted into the middle of the cast iron pipe that needs to be replaced, which is convenient for construction, installation, replacement and later maintenance. In this way, the original structure will not be damaged and water can be effectively prevented from flowing from upstairs to downstairs. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;
[0015] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the utility model;
[0016] Figure 3 for Figure 2 An enlarged structural diagram of the socket assembly in FIG.
[0017] In the figure: floor (1), edge filling layer (2), PPR pipe (3), first thread (31), cast iron pipe (4), fastening screw (41), second thread (42), socket assembly (5), third thread (51), step (52), support arm (53), connecting pipe (54), and wide outlet (55). DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Example 1: Please refer to Figure 1, a through-floor sleeve-type pipe connection structure, comprising a cast iron pipe 4 installed on the inner side of a floor 1 and not requiring replacement and a PPR pipe 3 for replacing the corroded cast iron pipe 4. It should be noted that since the corroded cast iron pipe 4 is used to lead out the PPR pipe and does not belong to the connection structure jointly constituted in this scheme, the cast iron pipes 4 mentioned below are all cast iron pipes 4 that do not require replacement and are used to be left for connection. The diameter of the PPR pipe 3 is smaller than the diameter of the cast iron pipe 4. The selection of the PPR pipe 3 with a small diameter is mainly for the convenience of installation, replacement and maintenance. The PPR pipe 3 and the cast iron pipe 4 that does not require replacement are installed in a threaded and detachable manner; after assembly, the outer side of the cast iron pipe 4 and the outer side of the PPR pipe 3 are both paved with an edge filling layer 2 for alignment and filling, the edge filling layer 2 is installed with the floor 1 outwardly, and the PPR pipe 3 is provided with a first thread 31 for matching use.
[0020] Among them, the first thread 31 is an external thread, and the external thread is mainly set to match the internal thread inside the cast iron pipe 4. A threaded pipe matching the PPR pipe 3 is installed inside the cast iron pipe 4. The threaded pipe is installed at the intersection of the cast iron pipe 4 and the PPR pipe 3. A second thread 42 matching the first thread 31 is provided inside the threaded pipe. The threaded pipe is locked on the cast iron pipe 4 by a fastening screw 41, that is, the second thread 42 is an internal thread. After the PPR pipe 3 and the cast iron pipe 4 are installed by threaded connection, they are filled with materials, so as to replace the corroded and rusted cast iron pipe 4 without affecting the overall structure.
[0021] Example 2, see attached Figure 2-3 A sleeve-type pipe connection structure that penetrates a floor slab comprises a cast iron pipe 4 that does not need to be replaced and a PPR pipe 3 that is used to replace the corroded cast iron pipe 4. The diameter of the PPR pipe 3 is smaller than the diameter of the cast iron pipe 4. It should be noted that the cast iron pipe 4 and the selection of the diameter size of the PPR pipe 3 have been explained in the above-mentioned embodiment 1, and the same explanation is also given here, and no excessive explanation is given. The PPR pipe 3 and the cast iron pipe 4 that does not need to be replaced are installed in a threaded and detachable manner; after assembly, the outer side of the cast iron pipe 4 and the outer side of the PPR pipe 3 are both paved with an edge filling layer 2 that is aligned and filled, and the edge filling layer 2 is installed with the floor slab 1 outwardly, and the PPR pipe 3 is provided with a first thread 31 for matching use.
[0022] Among them, a socket assembly 5 is provided between the cast iron pipe 4 and the PPR pipe 3, and the first thread 31 on the PPR pipe 3 is an internal thread and matches the third thread 51 on the top of the socket assembly 5; the socket assembly 5 also includes a support arm 53 for supporting the PPR pipe 3 and the cast iron pipe 4 to balance, and a connecting pipe 54 is provided on the inner side of the support arm 53, and the inlet diameter of the connecting pipe 54 is consistent with the outlet diameter of the PPR pipe 3. The consistent diameter is set to facilitate the continuous downward transportation of the liquid. At the same time, due to the diameter difference between the PPR pipe 3 and the cast iron pipe 4, the setting of the support arm 53 must effectively overcome this. Therefore, the support arm 53 is a Z-shaped setting, and the Z-shaped here is just similar to the Z-shaped setting, so a right-angle step 52 is provided on it to facilitate transition, and the support effect can be achieved at the same time; in addition, considering that the remaining dirt will not adhere to the socket assembly 5, and an effective transition is achieved, the overflow of dirt below is reduced.
[0023] The two embodiments of the utility model both adopt the "sleeve" principle, by sawing off the original cast iron pipe 5 cm away from the floor and the bottom of the floor, and then passing the PPR pipe through the middle of the cast iron pipe, and forming a threaded connection through the above-mentioned methods, and finally connecting the PPR pipe to the cast iron pipe. This will not only not damage the original environmental structure, but also avoid the risk of dirt leaking from the upstairs to the downstairs due to rust in the pipe. At the same time, it should be noted that in addition to the threaded installation method of the "sleeve" method to achieve the connection between the original pipe and the replacement pipe, the two can also be connected by an external adapter or other detachable methods, and the scheme should fall within the protection scope of this field.
[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A floor-penetrating sleeve-type pipe connection structure, characterized in that: The invention comprises a cast iron pipe (4) installed on the inner side of a floor slab (1) and not to be replaced, and a PPR pipe (3) used to replace the corroded cast iron pipe (4), wherein the diameter of the PPR pipe (3) is smaller than the diameter of the cast iron pipe (4), and the PPR pipe (3) and the cast iron pipe (4) not to be replaced are installed in a threaded and detachable manner; after assembly, the outer side of the cast iron pipe (4) and the outer side of the PPR pipe (3) are both paved with an edge filling layer (2) and aligned and filled, the edge filling layer (2) is installed with the floor slab (1) outwardly, and the PPR pipe (3) is provided with a first thread (31) for matching use.
2. A floor-penetrating sleeve-type pipe connection structure according to claim 1, characterized in that: The first thread (31) is an external thread, and a threaded pipe matching the PPR pipe (3) is installed on the inner side of the cast iron pipe (4), and the threaded pipe is installed at the junction of the cast iron pipe (4) and the PPR pipe (3).
3. A floor-penetrating sleeve-type pipe connection structure according to claim 2, characterized in that: The threaded pipe is provided with a second thread (42) matching the first thread (31) inside, and the threaded pipe is locked on the cast iron pipe (4) by means of a fastening screw (41).
4. The floor-penetrating sleeve-type pipe connection structure according to claim 1, characterized in that: A socket assembly (5) is provided between the cast iron pipe (4) and the PPR pipe (3); the first thread (31) on the PPR pipe (3) is an internal thread and matches the third thread (51) on the top of the socket assembly (5).
5. A floor-penetrating sleeve-type pipe connection structure according to claim 4, characterized in that: The socket assembly (5) further comprises a support arm (53) for supporting the PPR pipe (3) and the cast iron pipe (4) in a balanced manner, a connecting pipe (54) is provided on the inner side of the support arm (53), and the inlet diameter of the connecting pipe (54) is consistent with the outlet diameter of the PPR pipe (3).
6. A floor-penetrating sleeve-type pipe connection structure according to claim 5, characterized in that: The support arm (53) is arranged in a Z shape.
7. A floor-penetrating sleeve-type pipe connection structure according to claim 6, characterized in that: The support arm (53) is provided with a right-angle step (52) for facilitating transition.
8. A floor-penetrating sleeve-type pipe connection structure according to any one of claims 5 to 7, characterized in that: A gradually enlarging wide discharge opening (55) is also provided between the connecting pipe (54) and the supporting arm (53); after assembly, the wide discharge opening (55) extends to the interior of the cast iron pipe (4).