Inspection opening nut with anti-loosening and anti-loosening indication functions

Abstract

The utility model discloses a check hole nut with anti-loosening and anti-loosening indication functions, which is used for checking pipe fittings and comprises an outer nut and an inner nut, the outer nut is of a hollow ring-shaped structure, and a first internal thread is arranged on the inner wall of the outer nut; the inner nut comprises an inner nut body and a rotating disc which are connected in a clamped mode, and the rotating disc is arranged on the inner wall of the inner nut body. The rotating disc is of an annular structure; the inner nut is in threaded connection with the second inner thread of the pipe fitting inspection opening through the first outer thread; the outer nut is in threaded connection with the second outer thread of the pipe fitting inspection opening through the first inner thread; the turning direction of the first internal thread on the outer nut is opposite to that of the first external thread on the inner nut; and the second external thread and the second internal thread of the pipe fitting are opposite in screwing direction. Inner and outer double nuts are matched with reverse threads to improve the anti-loosening capability of the nuts; the inner and outer double-nut marking arrows are used for alignment indication, so that the nut loosening condition can be found conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe delivery devices, in particular to an inspection port nut with anti-loosening and anti-loosening indication functions. Background Art

[0002] In the current construction industry, PVC drainage systems have been widely used due to their corrosion resistance, light weight, and easy installation. However, in actual use, the problem of loose inspection nut caps in PVC drainage systems has gradually emerged, becoming a major hidden danger threatening the stable operation of the drainage system. Loose inspection nut caps in PVC drainage systems will not only lead to direct problems such as poor drainage and leakage, but may also cause more serious consequences. Once the nut cap falls off completely, the sewage inside the pipe may leak out, pollute the surrounding environment, and may even enter the building, causing inconvenience and harm to residents' daily lives. Utility Model Content

[0003] The utility model provides an inspection port nut with anti-loosening and anti-loosening indication functions, which is used for inner and outer double nuts to cooperate with reverse threads to improve the anti-loosening ability of the nut; the inner and outer double nuts are marked with arrows to align and indicate, so as to facilitate the detection of nut loosening.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] An inspection port nut with anti-loosening and anti-loosening indication functions, used for inspection of pipe fittings, comprises an outer nut and an inner nut, wherein:

[0006] The outer nut is a hollow annular structure, and a first internal thread is arranged on the inner wall thereof;

[0007] The inner nut comprises an inner nut body and a rotating disk which are connected by clamping, and the rotating disk is arranged on the inner wall of the inner nut body; the inner nut body is a cylindrical pipe plug structure, and a first external thread is arranged on the outer wall thereof; the rotating disk is a circular ring structure;

[0008] The pipe fitting is a pipe fitting with an inspection port, the outer wall of the inspection port end is provided with a second external thread, and the inner wall is provided with a second internal thread;

[0009] The internal nut is threadedly connected via the first external thread and the second internal thread of the pipe inspection port; the external nut is threadedly connected via the first internal thread and the second external thread of the pipe inspection port;

[0010] The first internal thread on the external nut has an opposite rotation direction to the first external thread on the internal nut; the second external thread on the pipe fitting has an opposite rotation direction to the second internal thread.

[0011] As a preferred technical solution of the utility model, the end of the outer nut is provided with a crimping stopper, and the end of the inner nut body is provided with a stopper, and the crimping stopper and the stopper are adapted to each other.

[0012] As a preferred technical solution of the utility model, the outer nut is provided with a first marking arrow on the end stop, and a second marking arrow is provided on the end surface of the rotating disk; the first marking arrow and the second marking arrow are close to each other.

[0013] As a preferred technical solution of the utility model, the outer nut and the inner nut are made of polyvinyl chloride material.

[0014] As a preferred technical solution of the utility model, the inner wall end of the inner nut body is provided with a first tooth structure for increasing friction, and the outer wall of the rotating disk is provided with a second tooth structure for increasing friction, and the first tooth structure and the second tooth structure are adapted to each other.

[0015] As a preferred technical solution of the utility model, a rubber ring is sleeved between the inner nut body and the pipe fitting.

[0016] As a preferred technical solution of the utility model, a first buckle structure is provided at the bottom of the first toothed structure, and a second buckle structure is provided at the bottom of the second toothed structure, and the first buckle structure and the second buckle structure are buckled.

[0017] As a preferred technical solution of the present utility model, a boss is provided on the inner wall of the rotating disk, and the rotating disk can be driven to rotate by applying force to the boss.

[0018] As a preferred technical solution of the utility model, the number of the boss is at least one.

[0019] As a preferred technical solution of the utility model, the boss is provided with a through hole, and the rotating disk can be driven to rotate by applying force to the through hole.

[0020] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0021] The utility model provides an inspection port nut with anti-loosening and anti-loosening indication functions. The nut is composed of an inner nut and an outer nut. The inner nut is provided with a thread that is opposite to the outer nut, and a rotating disk that can be rotated and adjusted is provided on the end face of the inner nut. After the inner and outer nuts are tightened on the inspection port, the rotating disk is adjusted to align with the marked arrow on the outer thread. Once the inner and outer threads rotate relative to each other and become loose, the arrow mark will deflect, thereby determining that the nut is loose, and prompting the operator to check and tighten it. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are only used for illustrative purposes and should not be construed as limitations on the present invention. In order to better illustrate the present embodiment, 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 may be omitted in the drawings.

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

[0024] Figure 2 It is a structural schematic diagram of the outer nut of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the inner nut of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the rotating disk of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the pipe fitting of the utility model;

[0028] Explanation of the reference numerals in the accompanying drawings: 1. External nut; 11. First internal thread; 12. Crimp stop; 13. First marking arrow; 2. Internal nut; 21. Internal nut body; 211. First external thread; 212. Stop; 213. First toothed structure; 214. First snap-fit ​​structure; 22. Rotating disk; 221. Second toothed structure; 222. Second snap-fit ​​structure; 223. Boss; 224. Through hole; 225. Second marking arrow; 3. Pipe fitting; 31. Second external thread; 32. Second internal thread; 4. Rubber ring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1

[0034] For easier understanding, see Figure 1-Figure 5 The utility model provides an embodiment of an inspection port nut with anti-loosening and anti-loosening indication functions, which is used for inspecting a pipe 3 and includes an outer nut 1 and an inner nut 2, wherein:

[0035] The outer nut 1 is a hollow annular structure, and a first internal thread 11 is provided on its inner wall;

[0036] The inner nut 2 comprises an inner nut body 21 and a rotating disk 22 which are connected by clamping, and the rotating disk 22 is arranged on the inner wall of the inner nut body 21; the inner nut body 21 is a cylindrical pipe plug structure, and a first external thread 211 is arranged on its outer wall; the rotating disk 22 is a circular ring structure;

[0037] The pipe fitting 3 is provided with an inspection port, the outer wall of the inspection port end is provided with a second external thread 31, and the inner wall is provided with a second internal thread 32;

[0038] The internal nut 2 is threadedly connected with the second internal thread 32 of the inspection port of the pipe fitting 3 through the first external thread 211; the external nut 1 is threadedly connected with the second external thread 31 of the inspection port of the pipe fitting 3 through the first internal thread 11;

[0039] The first internal thread 11 on the external nut 1 and the first external thread 211 on the internal nut 2 have opposite rotation directions; the second external thread 31 and the second internal thread 32 of the pipe fitting 3 have opposite rotation directions.

[0040] Example 2

[0041] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0042] like Figure 2 , Figure 4 As shown, as a preferred embodiment, based on the above method, further, the end of the outer nut 1 is provided with a crimping stop 12, and the end of the inner nut body 21 is provided with a stop 212, and the crimping stop 12 and the stop 212 are adapted to each other.

[0043] like Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the end of the outer nut 1 is provided with a crimping stop 12, and the end of the inner nut body 21 is provided with a stop 212, the crimping stop 12 and the stop 212 are adapted to each other, and the stop 212 is also used to prevent the inner nut 2 from being screwed into the inspection port of the pipe fitting 3.

[0044] like Figure 3 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the outer nut 1 is provided with a first marking arrow 13 on the end stop, and a second marking arrow 225 is provided on the end surface of the rotating disk 22; the first marking arrow 13 is close to the second marking arrow 225. During the clamping process, it should be noted that the second marking arrow 225 on the rotating disk 22 is as close to the first marking arrow 13 on the outer nut 1 as possible.

[0045] like Figure 3 As shown, as a preferred embodiment, on the basis of the above method, further, the outer nut 1 and the inner nut 2 are made of polyvinyl chloride material. Polyvinyl chloride has the advantages of strong plasticity, high safety, good flexibility and low price. It is made of polyvinyl chloride (PVC) material by one-time molding using a mold, and the source of the material is wide and the manufacturing technology is feasible.

[0046] like Figure 3As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the inner wall end of the inner nut body 21 is provided with a first tooth structure 213, and the outer wall of the rotating disk 22 is provided with a second tooth structure 221, and the first tooth structure 213 and the second tooth structure 221 are adapted to each other. The tooth structure is provided to increase the friction between the inner nut body 21 and the rotating disk 22, and reduce the probability of random sliding between the inner nut body 21 and the rotating disk 22.

[0047] like Figure 3 As shown, as a preferred embodiment, based on the above method, further, a first snap-in structure 214 is provided at the bottom of the first toothed structure 213, and a second snap-in structure 222 is provided at the bottom of the second toothed structure 221, and the first snap-in structure 214 and the second snap-in structure 222 are snap-connected.

[0048] like Figure 4 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, a boss 223 is provided on the inner wall of the rotating disk 22. When the operator needs to rotate the rotating disk 22, the boss 223 on the rotating disk 22 can be used by hand or with a tool to apply a rotational force to rotate the rotating disk 22.

[0049] like Figure 4 As shown, as a preferred implementation, based on the above-mentioned implementation, further, the number of the boss 223 is at least one.

[0050] like Figure 4 As shown, as a preferred embodiment, based on the above method, further, the boss 223 is provided with a through hole 224, and the rotating disk 22 can be driven to rotate by applying force to the through hole 224. The through hole 224 can be set to a circular, triangular, rectangular or other shape, depending on the tool used.

[0051] like Figure 1 As shown, as a preferred embodiment, on the basis of the above-mentioned embodiment, further, a rubber ring 4 is sleeved on the outer end surface of the inner nut body 21 .

[0052] After the connection is completed, the rubber ring 4 can further enhance the sealing performance of the inner nut 2 to the pipe fitting 3.

[0053] It should be noted that the installation process of the utility model is:

[0054] 1. Sleeve the rubber ring 4 along the outer wall of the inner nut body 21 until it abuts against the bottom of the inner nut body 21;

[0055] 2. Screw the first external thread 211 on the outer wall of the internal nut body 21 and the second internal thread 32 of the pipe fitting 3 until the internal nut body 21 and the pipe fitting 3 are tightened;

[0056] 3. Screw the first internal thread 11 on the inner wall of the external nut 1 and the second external thread 31 of the pipe fitting 3 until the external nut 1 and the pipe fitting 3 are tightened;

[0057] 4. Clamp the rotating disk 22 with the inner nut body 21. During the clamping process, make sure that the second marking arrow 225 on the rotating disk 22 is as close as possible to the first marking arrow 13 on the outer nut 1;

[0058] 5. Use your hands or a tool to rotate the rotating disk 22 in coordination with the boss 223 and the through hole 224 on the rotating disk 22 , and adjust the rotating disk 22 so that the second marking arrow 225 on the rotating disk 22 is aligned with the first marking arrow 13 on the outer nut 1 .

[0059] In this embodiment, two sets of mutually meshing gear rings are provided to form an anti-rotation structure. After the gear rings are meshed with each other, relative rotation between the outer nut and the inner nut can be prevented to a certain extent, and loosening between the inner nut and the first threaded section of the pipe fitting can be further prevented, thereby effectively avoiding loosening of the pipe fitting due to water flow impact.

[0060] Example 3

[0061] The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details:

[0062] like Figure 5 As shown, as a preferred embodiment, based on the above method, further, an elbow with an inspection port is provided, wherein the elbow with an inspection port comprises an elbow and an inspection port, and the inspection port is the inspection port nut with anti-loosening and anti-loosening indication functions as described in the above embodiment.

[0063] In the specific implementation process, the outer nut 1, the inner nut 2 and the pipe fitting 3 in the inspection port are screwed together by the method in Example 1 or 2, which can effectively prevent the elbow from loosening due to water flow impact.

[0064] As a preferred implementation, based on the above method, further, the pipe fittings and the elbow with inspection port are all made of PVC material. PVC material has the advantages of low cost, light weight, corrosion resistance, and good waterproof performance.

[0065] It is understandable that timely detection of whether the inspection nut in the PVC drainage system is loose is of great significance for ensuring the normal operation of the drainage system and preventing potential safety hazards. This is not only related to the sanitary environment inside the building and the quality of life of the residents, but also to the stability and safety of the entire drainage system. The utility model studies the anti-loosening and early warning of the nut, timely detects and handles the problem of nut loosening, so as to ensure the stable operation of the drainage system and the safety of the residents.

[0066] The utility model has a certain anti-loosening function: the utility model nut is tightened by the inner nut to seal the end face, the outer nut reinforces the locking strength of the inner nut, and the inner and outer nuts have opposite thread rotation directions, which can effectively prevent the outer nut 1 and the inner nut 2 from loosening at the same time. Compared with the inspection port nuts currently popular on the market, the utility model has a certain anti-loosening ability.

[0067] The utility model is convenient for discovering the loosening of threads in advance: the nut of the utility model is provided with marking arrows at the ends of the inner and outer nuts, and the arrows are adjusted to be aligned after locking. After the nut is loosened, the arrows will be deflected, thereby discovering that the nut is loose.

[0068] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An inspection port nut with anti-loosening and anti-loosening indication functions, used for inspecting a pipe fitting (3), characterized in that: It comprises an outer nut (1) and an inner nut (2), wherein: The outer nut (1) is a hollow annular structure, and a first internal thread (11) is provided on the inner wall of the outer nut; The inner nut (2) comprises an inner nut body (21) and a rotating disk (22) which are connected by clamping, and the rotating disk (22) is arranged on the inner wall of the inner nut body (21); the inner nut body (21) is a cylindrical pipe plug structure, and a first external thread (211) is arranged on the outer wall of the inner nut body (21); the rotating disk (22) is a circular ring structure; The pipe (3) is provided with an inspection port, the outer wall of the end of the inspection port is provided with a second external thread (31), and the inner wall is provided with a second internal thread (32); The internal nut (2) is threadedly connected to the second internal thread (32) of the inspection port of the pipe fitting (3) via the first external thread (211); the external nut (1) is threadedly connected to the second external thread (31) of the inspection port of the pipe fitting (3) via the first internal thread (11); The first internal thread (11) on the external nut (1) and the first external thread (211) on the internal nut (2) have opposite rotation directions; the second external thread (31) and the second internal thread (32) of the pipe (3) have opposite rotation directions.

2. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 1, characterized in that: The end of the outer nut (1) is provided with a crimping stop (12), and the end of the inner nut body (21) is provided with a stop (212), and the crimping stop (12) and the stop (212) are matched.

3. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 1, characterized in that: The outer nut (1) is provided with a first marking arrow (13) on the end stop, and a second marking arrow (225) is provided on the end surface of the rotating disk (22); the first marking arrow (13) and the second marking arrow (225) are located close to each other.

4. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 1, characterized in that: The outer nut (1) and the inner nut (2) are made of polyvinyl chloride material.

5. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 4, characterized in that: The inner wall end of the inner nut body (21) is provided with a first toothed structure (213) for increasing friction, and the outer wall of the rotating disk (22) is provided with a second toothed structure (221), and the first toothed structure (213) fits with the second toothed structure (221).

6. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 4, characterized in that: A rubber ring (4) is sleeved between the inner nut body (21) and the pipe fitting (3).

7. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 5, characterized in that: A first buckle structure (214) is provided at the bottom of the first tooth-shaped structure (213), and a second buckle structure (222) is provided at the bottom of the second tooth-shaped structure (221); the first buckle structure (214) and the second buckle structure (222) are buckled together.

8. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 5, characterized in that: The inner wall of the rotating disk (22) is provided with a boss (223), and the rotating disk (22) can be driven to rotate by applying force to the boss (223).

9. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 8, characterized in that: The number of the boss (223) is at least one.

10. The inspection port nut with anti-loosening and anti-loosening indication functions according to claim 8, characterized in that: The boss (223) is provided with a through hole (224), and the rotating disk (22) can be driven to rotate by applying force to the through hole (224).

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