Reducing adapter

By designing a reducer adapter, the outer diameter of the reducer pipe gradually decreases along the Z-axis direction, solving the same excavation depth problem required for large and small pipe adapters in the existing wire pipe wiring process, achieving the effect of reducing the excavation depth and width of the floor slab, and reducing the impact on the strength and load bearing of the floor slab.

CN222884265UActive Publication Date: 2025-05-16GUANGDONG LIANSU TECH INDAL
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Patent Information

Application Number
CN202421453306.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-24
Publication Date
2025-05-16
Estimated Expiration
2034-06-24

AI Technical Summary

Technical Problem

When the existing wire pipe wiring process splits the cable, the transfer between the large wire pipe and the small wire pipe requires the same excavation depth, which increases the impact on the strength and load bearing of the floor.

Method used

A reducer adapter is designed, including a large-diameter adapter, a small-diameter adapter and a reducer tube. The outer diameter of the reducer tube is gradually reduced from a large-diameter adapter to a small-diameter adapter along the Z-axis direction, reducing the depth of the pipe groove of the small-diameter adapter.

Benefits of technology

Through the design of the reducer adapter, the excavation depth and width of the small-diameter adapter are reduced, the impact on the strength and load bearing of the floor slabs is reduced, and the construction efficiency is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of adapting fitting structures, in particular to a reducing adapter. Comprising a large-caliber adapter, a small-caliber adapter and a reducing pipe, the outer diameter of the reducing pipe is gradually reduced from the end where the small-caliber adapter is located to the end where the large-caliber adapter is located in the Y-axis direction, and the outer diameter of the reducing pipe is gradually reduced from the end where the large-caliber adapter is located to the end where the small-caliber adapter is located in the Z-axis direction. The outer diameter of the reducing pipe is gradually reduced from the end where the small-caliber adapter is located to the end where the large-caliber adapter is located in the Y-axis direction, so that the overall width of the reducing adapter can be reduced, and the excavation width of a floor slab is effectively reduced; the outer diameter of the reducing pipe is gradually reduced from the end where the large-diameter adapter is located to the end where the small-diameter adapter is located in the Z-axis direction, the overall depth of the reducing adapter can be reduced, and the excavation depth of a floor slab is effectively reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of connecting fitting structures, and more specifically, to a reducing adapter. Background Art

[0002] For the sake of aesthetics, the current construction process of home decoration wire pipes is mostly pre-buried construction, which requires excavating corresponding pipe grooves on the wall or floor and pre-buried the wire pipes in the wall. However, the excavation depth of the floor will have a certain impact on the strength and load-bearing capacity of the floor. At the same time, a deeper excavation depth will increase the excavation workload and reduce work efficiency.

[0003] In the existing cable conduit routing, especially when multiple cables need to be split, the cables after splitting are installed in a small diameter pipe, and the cables before splitting are installed in a large diameter pipe. In the current solution, the large cable conduit and the small cable conduit are connected by a box-type adapter, resulting in the depth of the pipe trench excavated for the small cable conduit being the same as that for the large cable conduit, increasing the impact on the strength and load-bearing capacity of the floor slab. Utility Model Content

[0004] The utility model aims to provide a reducing adapter, which can reduce the excavation depth of the pre-buried wire pipe on the floor to a certain extent, thereby reducing the impact on the strength and load-bearing capacity of the floor.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A reducing adapter comprises a large-diameter adapter, a small-diameter adapter and a reducing pipe; one end of the reducing pipe is connected to the large-diameter adapter, and the other end is connected to the small-diameter adapter; at least two small-diameter adapters are provided, and are arranged side by side at the same end of the reducing pipe; the outer diameter of the reducing pipe gradually decreases along the Y-axis direction from the end where the small-diameter adapter is located to the end where the large-diameter adapter is located, and the outer diameter of the reducing pipe gradually decreases along the Z-axis direction from the end where the large-diameter adapter is located to the end where the small-diameter adapter is located.

[0007] According to the above technical means, the utility model provides a reducing adapter. When installing the adapter, a corresponding pipe groove is excavated for the wall or floor, and the adapter is pre-buried in the wall; when arranging the wire pipe, the bundled wires are passed through the large-diameter adapter and then dispersed into multiple small wires in the reducing pipe, and then the multiple small wires are passed through the small-diameter adapters arranged side by side one by one, and the large-diameter adapter and the small-diameter adapter are both arranged in a cylindrical shape; in the utility model, the outer diameter of the reducing pipe along the Z-axis direction gradually decreases from one end of the large-diameter adapter to one end of the small-diameter adapter, and the Z-axis direction, when installed, is the depth direction of the pipe groove; through the adapter of the utility model, when connecting large wires and small wires, the pipe groove depth of the small-diameter adapter no longer needs to be consistent with the pipe groove depth of the large-diameter adapter, thereby reducing the pipe groove depth required to be excavated for the small-diameter adapter, thereby reducing the impact on the strength and load-bearing capacity of the floor. In addition, the outer diameter of the reducer along the Y-axis direction gradually decreases from the small-diameter adapter end to the large-diameter adapter end. The Y-axis direction is the width direction of the pipe groove during installation. Through the solution of the utility model, the excavation width of the pipe groove at the diameter adapter can be reduced to a certain extent. Moreover, compared with the existing box-type adapter, the solution of the utility model can also reduce the depth and width of the pipe groove required to be excavated at the adapter part to a certain extent; in summary, the reducer provided by the utility model comprehensively reduces the excavation width and depth of the floor slab, and reduces the impact of the pre-buried wire pipe on the strength and load-bearing capacity of the floor slab.

[0008] Furthermore, the large-diameter adapter, the small-diameter adapter and the reducer are all arranged along the X-axis direction, so as to avoid the offset angle of the central axis of the large-diameter adapter, the reducer and the small-diameter adapter, and further reduce the width of the reducer along the Y-axis direction and the depth along the Z-axis direction.

[0009] Furthermore, the uppermost end of the large-diameter adapter in the Z-axis direction is flush with the uppermost end of the small-diameter adapter in the Z-axis direction. This arrangement, on the one hand, can minimize the overall depth of the pipe groove corresponding to the adapter, and the depth at one end of the small-diameter adapter only needs to be set according to the outer diameter of the small-diameter adapter; on the other hand, when using the adapter provided by the utility model for beam splitting and routing, the depth of the pipe groove at the small-diameter adapter only needs to be set according to the outer diameter of the small-diameter adapter, and no longer needs to be consistent with the depth of the pipe groove at the large-diameter adapter, thereby minimizing the excavation depth of the pipe groove corresponding to the small-diameter adapter.

[0010] Furthermore, the large-diameter adapter is located at the midline position of the small-diameter adapters arranged side by side, ensuring that the maximum size of the reducer adapter along the Y-axis direction is the size of the end where the small-diameter adapter is located along the Y-axis direction, ensuring that the width of the reducer as a whole is reduced to the greatest extent; at the same time, the setting of the midline position allows the reducer to be symmetrical, which is more conducive to wiring and beautiful appearance.

[0011] Furthermore, the reducer includes an end cap and a tube body; an opening is formed in the side wall of the tube body, and the end cap is detachably mounted at the opening; one end of the tube body is connected to the large-diameter adapter, and the other end is connected to the small-diameter adapter. By splitting the reducer into the tube body with an opening and the detachable end cap, the wires in the reducer can be directly observed and adjusted, which facilitates the dispersion of bundled wires into multiple small wires in the reducer, and is conducive to the routing of wires in the reducer.

[0012] Furthermore, the end cap is provided with a first seal, and the tube body is provided with a second seal; the first seal is sealed and connected to the second seal. After the end cap is mounted on the tube body, the sealing degree of the reducer is ensured by the sealed first seal and the second seal, and the wires in the reducer are protected to prevent impurities from entering the reducer and damaging the wires in the reducer.

[0013] Furthermore, the end cap is clamped on the tube body. The end cap and the tube body are detachably connected by clamping, which makes installation and disassembly easier while ensuring the stable connection between the end cap and the tube body.

[0014] Furthermore, the end cover is provided with a first clamping piece, the tube body is provided with a second clamping piece, and the first clamping piece is clamped with the second clamping piece. The end cover and the tube body are detachably connected by the clamping of the first clamping piece and the second clamping piece.

[0015] Furthermore, a cover-opening prying groove is provided on the end cover or the tube body. When the reducer needs to be disassembled, a hard tool is inserted into the cover-opening prying groove to pry out the end cover, so as to separate the end cover from the tube body.

[0016] Furthermore, the reducer also includes a connecting plate, on which at least two mounting through holes are arranged side by side, and the small-diameter adapters are mounted one by one at the mounting through holes; the small-diameter adapters are connected to the pipe body through the connecting plate. Multiple small-diameter adapters arranged side by side are connected through the connecting plate.

[0017] Furthermore, the end cap is provided with a first positioning member, the tube body is provided with a second positioning member, and the first positioning member is connected to the second positioning member. When the end cap is installed on the tube body, the first positioning member is connected to the second positioning member, and then the end cap is detachably installed on the tube body, which is convenient for positioning the relative position of the end cap and the tube body and avoiding installation misalignment.

[0018] Furthermore, the inner surface of the reducer is smooth, which reduces the protruding corners and sharp edges inside, reduces the resistance of the cable at the connection point of the cable tube, and can smoothly insert the wires into the reducer, avoiding the phenomenon of wire jamming and entanglement caused by protruding corners, so that the wire threading can be completed more quickly and the construction efficiency is improved.

[0019] Compared with the prior art, the beneficial effects are:

[0020] 1. The utility model provides a reducing adapter, which reduces the overall width of the reducing pipe by gradually reducing the outer diameter of the reducing pipe along the Y-axis direction from the end where the small-diameter adapter is located to the end where the large-diameter adapter is located, thereby reducing the excavation width of the floor slab and reducing the impact on the strength and load-bearing capacity of the floor slab.

[0021] 2. The utility model provides a reducer, which reduces the overall depth of the reducer by gradually reducing the outer diameter of the reducer from the end where the large-diameter adapter is located to the end where the small-diameter adapter is located along the Z-axis direction, thereby reducing the excavation depth of the floor slab and reducing the impact on the strength and load-bearing capacity of the floor slab.

[0022] 3. The utility model provides a reducer adapter, which is configured as an end cap and a tube body for clamping connection, and the inner surface of the reducer is configured to be smooth. The wires in the reducer can be directly observed and adjusted during threading, and the protruding edges and corners inside the reducer can be avoided to cause wire jamming, entanglement, etc., so that the wires can be threaded more smoothly in the reducer adapter, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the utility model reducing adapter;

[0024] Figure 2 It is a schematic diagram of the end cover structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the reducer of the utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the utility model reducing adapter;

[0027] Figure 5 It is a schematic diagram of the excavation depth of the utility model;

[0028] Figure 6 It is a schematic diagram of excavation width of the utility model.

[0029] Among them, the illustrations and markings are explained as follows: 1. Large-diameter adapter; 2. Small-diameter adapter; 3. Reducer; 301. End cover; 302. Tube body; 303. Connecting plate; 331. Mounting through hole; 4. First sealing member; 5. Second sealing member; 6. First clip; 7. Second clip; 8. Cover opening prying groove; 9. First positioning member; 10. Second positioning member. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The present invention is described in one of the embodiments in combination with the specific implementation methods. Among them, the drawings are only used for exemplary descriptions, and only schematic diagrams are shown, not physical drawings, and cannot be understood as limitations on the present invention; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0031] In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for exemplary explanations and cannot be understood as limiting the present invention. For ordinary technicians in the field, the specific meanings of the above terms can be understood according to specific circumstances. In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that satisfy both A and B.

[0032] Example 1

[0033] like Figures 1 to 6As shown, this embodiment proposes a reducer, including a large-diameter adapter 1, a small-diameter adapter 2 and a reducer 3; one end of the reducer 3 is connected to the large-diameter adapter 1, and the other end is connected to the small-diameter adapter 2; at least two small-diameter adapters 2 are provided, and are arranged side by side at the same end of the reducer 3; the outer diameter of the reducer 3 gradually decreases along the Y-axis direction from the end where the small-diameter adapter 2 is located to the end where the large-diameter adapter 1 is located, and the outer diameter of the reducer 3 gradually decreases along the Z-axis direction from the end where the large-diameter adapter 1 is located to the end where the small-diameter adapter 2 is located.

[0034] According to the above technical means, the utility model provides a reducer adapter. When installing the reducer adapter, a corresponding pipe groove is excavated on the wall or floor, and the adapter is pre-buried in the wall; when arranging the wire pipe, the bundled wires are passed through the large-diameter adapter 1, and then dispersed into multiple small wires in the reducer 3, and then the multiple small wires are passed through the small-diameter adapters 2 arranged side by side one by one, and the large-diameter adapter 1 and the small-diameter adapter 2 are both set to be cylindrical; in the utility model, the outer diameter of the reducer 3 along the Z-axis direction gradually decreases from one end of the large-diameter adapter 1 to one end of the small-diameter adapter 2, and the Z-axis direction, when installed, is the depth direction of the pipe groove; through the adapter of the utility model, when connecting large wires and small wires, the pipe groove depth H2 of the small-diameter adapter 2 no longer needs to be consistent with the pipe groove depth H1 of the large-diameter adapter 1, thereby reducing the pipe groove depth H2 required to be excavated for the small-diameter adapter 2, thereby reducing the impact on the strength and load-bearing capacity of the floor. In addition, the outer diameter of the reducer 3 along the Y-axis direction gradually decreases from the end of the small-diameter adapter 2 to the end of the large-diameter adapter 1. The Y-axis direction is the width direction of the pipe groove during installation. Through the solution of the utility model, the excavation width W2 of the pipe groove at the diameter adapter 2 can be reduced to a certain extent. Moreover, compared with the existing box-type adapter, the solution of the utility model can also reduce the depth and width of the pipe groove required to be excavated at the adapter part to a certain extent; in summary, the reducer provided by the utility model comprehensively reduces the excavation width and depth of the floor slab, and reduces the influence of the pre-buried wire pipe on the strength and load-bearing capacity of the floor slab.

[0035] Example 2

[0036] This embodiment proposes a reducing adapter, based on the embodiment 1, in this embodiment, as Figure 1 As shown, the large-diameter adapter 1, the small-diameter adapter 2 and the reducer 3 are all arranged along the X-axis direction. Avoiding the offset angle of the central axis of the large-diameter adapter 1, the reducer 3 and the small-diameter adapter 2 can further reduce the width of the reducer along the Y-axis direction and the depth along the Z-axis direction.

[0037] like Figure 5 and Figure 6As shown, the uppermost end of the large-diameter adapter 1 in the Z-axis direction is flush with the uppermost end of the small-diameter adapter 2 in the Z-axis direction. This arrangement, on the one hand, can minimize the overall depth of the pipe groove corresponding to the adapter, and the depth H2 at one end of the small-diameter adapter 3 only needs to be set according to the outer diameter of the small-diameter adapter 3; on the other hand, when using the adapter provided by the utility model for beam splitting and routing, the pipe groove depth H2 at the small-diameter adapter 3 only needs to be set according to the outer diameter of the small-diameter adapter 3, and no longer needs to be consistent with the pipe groove depth H1 at the large-diameter adapter 1, thereby minimizing the excavation depth of the pipe groove corresponding to the small-diameter adapter 3. The large-diameter adapter 1 is located at the midline position of the small-diameter adapters 2 arranged side by side. The maximum size of the reducer along the Y-axis direction is ensured to be the size W2 of the end where the small-diameter adapter 2 is located, so as to minimize the overall width of the reducer. At the same time, the setting of the centerline position makes the reducer 3 symmetrical, which makes the reducer 3 beautiful in appearance and more conducive to wiring.

[0038] like Figure 3 As shown, the inner surface of the reducer 3 is smooth. The protruding corners and sharp edges inside are reduced, and the resistance of the cable at the wire tube transition is reduced, so that the wires can be smoothly inserted into the reducer 3, and the phenomena of wire jamming and entanglement caused by protruding corners are avoided, so that the wire threading can be completed more quickly and the construction efficiency is improved.

[0039] Example 3

[0040] This embodiment proposes a reducing adapter, based on the first and second embodiments, in this embodiment, as Figure 1 and Figure 4 As shown, the reducer 3 includes an end cap 301 and a tube body 302; the side wall of the tube body 302 is provided with an opening, and the end cap 301 is detachably installed at the opening; one end of the tube body 302 is connected to the large-diameter adapter 1, and the other end is connected to the small-diameter adapter 2. By splitting the reducer 3 into the tube body 302 with an opening and the detachable end cap 301, the wires in the reducer 3 can be directly observed and adjusted, which facilitates the dispersion of bundled wires into multiple small wires in the reducer 3, and is conducive to the routing of the wires in the reducer 3.

[0041] like Figures 2 to 4As shown, the end cap 301 is provided with a first seal 4, and the tube body 302 is provided with a second seal 5; the first seal 4 and the second seal 5 are sealed and connected. After the end cap 301 is installed on the tube body 302, the sealing degree of the reducer 3 is ensured by the sealed first seal 4 and the second seal 5, and the wires in the reducer 3 are protected to prevent impurities from entering the reducer 3 and causing damage to the wires in the reducer 3. Here, the first seal 4 is set as a sealing strip, and the second seal 5 is set as a sealing groove; the first seal 4 can also be set as a sealing groove, and the second seal 5 can be set as a sealing strip; the sealing strip is inserted into the sealing groove for sealing connection. The first seal 4 is set at the edge of the end cap 301, and the second seal 5 is set at the edge corresponding to the opening of the tube body 302.

[0042] like Figures 1 to 4 As shown, the end cap 301 is clamped on the tube body 302. The end cap 301 and the tube body 302 are detachably connected by clamping, which makes installation and disassembly easier while ensuring that the end cap 301 and the tube body 302 are firmly connected. A first clamping member 6 is provided on the end cap 301, and a second clamping member 7 is provided on the tube body 302, and the first clamping member 6 is clamped with the second clamping member 7. The end cap 301 and the tube body 302 are detachably connected by clamping the first clamping member 6 with the second clamping member 7. The end cap 301 is provided with a first clamping member 6 at one end close to the large-diameter adapter 1 and at one end close to the small-diameter adapter 2, and the tube body 302 is provided with a second clamping member 7 at the corresponding position; by providing clamping members at both ends, the connection between the tube body 302 and the end cap 301 is tighter. Here, the first clamping member 6 is configured as a buckle, and the second clamping member 7 is configured as a slot; the first clamping member 6 can also be configured as a slot, and the second clamping member can be configured as a buckle; the buckle is clamped in the slot.

[0043] like Figures 2 to 4 As shown, the end cover 301 or the tube body 302 is provided with a cover-opening prying groove 8. When the reducer 3 needs to be disassembled, a hard tool is inserted into the cover-opening prying groove 8 to pry out the end cover 301, so as to facilitate separation of the end cover 301 from the tube body 302. The cover-opening prying groove 8 can be provided at the first clamping member 6 or the second clamping member 7 to avoid damage to the first clamping member 6 or the second clamping member 7 when the end cover 301 is pried up.

[0044] like Figure 1 and Figure 4 As shown, the reducer 3 further includes a connecting plate 303, on which at least two mounting through holes 331 are arranged side by side, and the small-diameter adapters 2 are mounted one by one at the mounting through holes 331; the small-diameter adapters 2 are connected to the pipe body 302 through the connecting plate 303. The connecting plate 303 connects a plurality of small-diameter adapters 2 arranged side by side.

[0045] like Figures 2 to 4As shown, the end cap 301 is provided with a first positioning member 9, the tube body 302 is provided with a second positioning member 10, and the first positioning member 9 is connected to the second positioning member 10. When the end cap 301 is installed on the tube body 302, the first positioning member 9 is connected to the second positioning member 10, and then the end cap 301 is detachably installed on the tube body 302, so as to facilitate the positioning of the relative positions of the end cap 301 and the tube body 302 and avoid misalignment of the installation. The end of the end cap 301 close to the large-diameter adapter 1 and the end close to the small-diameter adapter 2 are both provided with a first positioning member 9, and the tube body 302 is provided with a second positioning member 10 at the corresponding position; by providing positioning members at both ends, it is convenient to more accurately position the relative positions of the end cap 301 and the tube body 302. The first positioning member 9 can be set as a positioning rib or a positioning groove, and the second positioning member 10 can be set as a positioning groove or a positioning rib accordingly; the positioning rib is installed in the positioning groove at the corresponding position.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A reducing adapter, characterized in that: The invention comprises a large-diameter adapter (1), a small-diameter adapter (2) and a reducer (3); one end of the reducer (3) is connected to the large-diameter adapter (1), and the other end is connected to the small-diameter adapter (2); at least two small-diameter adapters (2) are provided, and are arranged side by side at the same end of the reducer (3); the outer diameter of the reducer (3) gradually decreases along the Y-axis direction from the end where the small-diameter adapter (2) is located to the end where the large-diameter adapter (1) is located, and the outer diameter of the reducer (3) gradually decreases along the Z-axis direction from the end where the large-diameter adapter (1) is located to the end where the small-diameter adapter (2) is located.

2. The reducing adapter according to claim 1, characterized in that: The large-diameter adapter (1), the small-diameter adapter (2) and the reducing pipe (3) are all arranged along the X-axis direction.

3. The reducing adapter according to claim 2, characterized in that: The uppermost end of the large-diameter adapter (1) in the Z-axis direction is flush with the uppermost end of the small-diameter adapter (2) in the Z-axis direction; the large-diameter adapter (1) is located at the midline position of the small-diameter adapters (2) arranged side by side.

4. The reducing adapter according to claim 3, characterized in that: The reducer (3) comprises an end cover (301) and a tube body (302); an opening is provided on a side wall of the tube body (302), and the end cover (301) is detachably mounted at the opening; one end of the tube body (302) is connected to the large-diameter adapter (1), and the other end is connected to the small-diameter adapter (2).

5. The reducing adapter according to claim 4, characterized in that: The end cover (301) is provided with a first sealing member (4), and the tube body (302) is provided with a second sealing member (5); the first sealing member (4) and the second sealing member (5) are sealedly connected.

6. The reducing adapter according to claim 4, characterized in that: The end cover (301) is snap-connected to the tube body (302).

7. The reducing adapter according to claim 6, characterized in that: The end cover (301) is provided with a first clamping piece (6), the tube body (302) is provided with a second clamping piece (7), the first clamping piece (6) and the second clamping piece (7) being clamped together; the end cover (301) or the tube body (302) is provided with a cover-opening prying groove (8).

8. The reducing adapter according to any one of claims 4 to 7, characterized in that: The reducer (3) further comprises a connecting plate (303), on which at least two mounting through holes (331) are arranged side by side, and the small-diameter adapters (2) are mounted in a one-to-one correspondence at the mounting through holes (331); the small-diameter adapters (2) are connected to the pipe body (302) via the connecting plate (303).

9. The reducing adapter according to claim 8, characterized in that: The end cover (301) is provided with a first positioning member (9), the tube body (302) is provided with a second positioning member (10), and the first positioning member (9) is connected to the second positioning member (10).

10. The reducing adapter according to claim 1, characterized in that: The inner surface of the reducer (3) is smooth.