Antiskid nut for gas pipe

Abstract

The utility model discloses an anti-skid nut for a gas pipe, and belongs to the technical field of nuts. The technical problem that the nut sealing effect is insufficient in gas pipe assembly is solved. According to the technical scheme, the nut is characterized by comprising a nut body, an internal thread structure is arranged on the inner wall of the nut body, an annular groove is formed in the middle section of the internal thread structure, and a sealing ring is assembled in the annular groove.

Description

Technical Field

[0001] The present application relates to the technical field of anti-slip nuts, and in particular to an anti-slip nut for a gas pipe. Background Art

[0002] At present, the nut structure is well known to the public. The nut body is square outside and round inside, the outer circumference is hexagonal, the inner circumference is round, and the inner wall has threads. The nut structure is generally assembled on a threaded pipe, and for gas pipes, the public is familiar with the gas-permeable and threaded ones to match the nut assembly. When assembling the nut, it is necessary to consider the airtightness and reliable sealing, otherwise it will cause leakage, which will affect the use. The harm of gas leakage is very great, so the importance of sealing can be seen from this.

[0003] In order to seal the existing gas pipe nuts, they are usually tightened, but they still become loose after use. Therefore, some construction workers will bring sealing glue to add, but due to the narrow space on the edge of the nut, this method is not convenient and practical. Utility Model Content

[0004] In view of the above-mentioned shortcomings (problems) of the prior art, in order to improve the sealing and anti-skid performance of the nut, the present application provides an anti-skid nut for a gas pipe.

[0005] To achieve the above-mentioned purpose and other related purposes, the present application adopts the following technical solution: an anti-slip nut for a gas pipe, comprising a nut body, an inner wall of the nut body having an internal thread structure, a middle section of the internal thread structure having an annular groove, and a sealing ring installed in the annular groove.

[0006] Optionally, chamfered portions are provided on both sides of the inner circumference of the sealing ring.

[0007] Optionally, the sealing ring is made of nylon, the inner diameter of the sealing ring is D1, the inner diameter of the top of the thread structure is D2, and the inner diameter of the bottom of the thread structure is D3. After the sealing ring is assembled, (D2-D1) / 2=L1, (D3-D2) / 4≤L1≤(D3-D2) / 2.

[0008] Optionally, the thickness of the sealing ring is H, the pitch of the thread structure is A, and 0.5A≤H≤1.5A.

[0009] Optionally, an inner convex ring is provided at one end of the nut body, and a secondary seal is sleeved on the outer end of the inner convex ring. The secondary seal includes a shell, a sealing liquid and a seal. The shell has an inner cavity for accommodating the sealing liquid. The opening of the shell is closed by a seal, and the opening is close to the inner convex ring.

[0010] Optionally, the shell is made of a plastic easily deformable material, and a slot portion is formed on the shell, and the slot portion is sleeved on the nut body.

[0011] Optionally, a puncture needle is disposed inside the shell, the puncture needle is close to the opening and is used to puncture the seal, and the pointed end of the puncture needle faces the inner convex ring.

[0012] In summary, the present application includes at least one of the following beneficial technical effects:

[0013] 1. When the nut body is assembled through the internal thread structure, the sealing ring in the middle is deformed and filled in the gap of the thread matching, thereby achieving a reliable sealing effect;

[0014] 2. Since the sealing ring is in the middle of the internal thread structure, it can quickly deform to form a seal after having a chamfered portion, and it can also resist stress and reduce the probability of edge cracking;

[0015] 3. The sealing ring has a suitable size to achieve a reliable sealing effect in the middle of the internal thread;

[0016] 4. A secondary seal is provided at the end of the nut body to further improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the nut body of the first embodiment of the present application;

[0018] Figure 2 yes Figure 1 Side view of

[0019] Figure 3 yes Figure 2 Sectional view at AA;

[0020] Figure 4 is a structural diagram of Embodiment 2;

[0021] Figure 5 is a schematic structural diagram of Embodiment 3;

[0022] Figure 6 This is a schematic diagram of the structural distribution of the needle.

[0023] Description of main reference numerals:

[0024] 1. Nut body; 11. Internal thread structure; 12. Ring groove; 13. Inner convex ring; 2. Sealing ring; 21. Chamfered portion; 3. Secondary sealing member; 31. Shell; 311. Opening; 312. Slot portion; 313. Needle; 32. Sealing liquid; 33. Seal. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show the components related to the present application rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0027] The specific implementation methods of the present application will be further described below in conjunction with the accompanying drawings.

[0028] Embodiment 1:

[0029] The embodiment of the present application discloses an anti-slip nut for a gas pipe, comprising a nut body 1, an inner wall of the nut body 1 is provided with an internal thread structure 11, a middle section of the internal thread structure 11 is provided with an annular groove 12, and a sealing ring 2 is assembled in the annular groove 12. The internal thread structure 11 is interrupted by the annular groove 12, and the sealing ring 2 is embedded in the annular groove 12 at this time. The sealing ring 2 will deform during the thread assembly process and form a reliable seal here, so as to achieve the purpose of anti-slip of the nut body 1, and the sealing effect can meet the gas sealing requirements. The nut body 1 is made of brass. The friction coefficient of the nylon sealing ring 2 is usually between 0.01 and 0.30. This solution has a simple structure, low cost and strong practicality.

[0030] Based on the above scheme, it can be further optimized. Figure 2 and Figure 3 As shown, chamfered portions 21 are provided on both sides of the inner circumference of the sealing ring 2. Such a structure of the chamfered portion 21 is conducive to the deformation of the sealing ring 2 during the thread matching process to achieve a sealing effect. Since the sealing ring 2 is in the middle position of the internal thread structure 11, when it has the chamfered portion 21, it can quickly deform to form a seal, and can resist stress and reduce the probability of edge cracking.

[0031] exist Figure 3 It can be seen that the sealing ring 2 is made of nylon, the inner diameter of the sealing ring 2 is D1, the inner diameter of the top of the thread structure is D2, and the inner diameter of the bottom of the thread structure is D3. After the sealing ring 2 is assembled, (D2-D1) / 2=L1, (D3-D2) / 4≤L1≤(D3-D2) / 2.

[0032] The thickness of the sealing ring 2 is H, the pitch of the thread structure is A, and 0.5A≤H≤1.5A.

[0033] Such a size range can prevent the sealing ring 2 from being easily worn or excessively deformed and broken during the assembly process, and can achieve a reliable sealing effect.

[0034] Embodiment 2:

[0035] refer to Figure 4 As shown, based on the first embodiment, the sealing and anti-slip effects are further improved. An inner convex ring 13 is provided at one end of the nut body 1, and a secondary seal 3 is sleeved on the outer end of the inner convex ring 13. The secondary seal 3 includes a shell 31, a sealing liquid 32 and a seal 33. The shell 31 has an inner cavity for accommodating the sealing liquid 32. The opening 311 of the shell 31 is closed by the seal 33, and the opening 311 is close to the inner convex ring 13. The sealing liquid 32 can be diverse. In a specific example, it can be glue, curing liquid, etc.

[0036] Optionally, the shell 31 is made of a plastic easily deformable material, and the shell 31 forms a slot portion 312 , which is sleeved on the nut body 1 .

[0037] exist Figure 4 As can be seen in the figure, a handle is provided on the seal 33, and the seal 33 can be torn open very conveniently through the handle, so that the sealing liquid 32 can flow out and fill the edge gap. After it solidifies, reliable fixing and sealing can be completed.

[0038] Embodiment three:

[0039] Based on further changes in Example 2, refer to Figure 5 It can be seen that the difference is that a puncture needle 313 is arranged inside the housing 31, the puncture needle 313 is close to the opening 311 and is used to puncture the seal 33, and the tip of the puncture needle 313 faces the inner convex ring 13. Figure 6 It can be seen that a plurality of puncture needles 313 can be provided and distributed circumferentially, so that the puncture needles 313 can puncture the seal 33 by squeezing the shell 31 to allow the sealing liquid 32 to flow out.

[0040] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-slip nut for a gas pipe, comprising a nut body (1), an inner wall of the nut body (1) being provided with an internal thread structure (11), characterized in that: The middle section of the internal thread structure (11) is provided with an annular groove (12), and a sealing ring (2) is installed in the annular groove (12); An inner convex ring (13) is provided at one end of the nut body (1), and a secondary seal (3) is sleeved on the outer end of the inner convex ring (13). The secondary seal (3) comprises a shell (31), a sealing liquid (32) and a seal (33). The shell (31) has an inner cavity for accommodating the sealing liquid (32). An opening (311) of the shell (31) is closed by a seal (33), and the opening (311) is close to the inner convex ring (13). The shell (31) is made of a plastic deformable material, and a slot portion (312) is formed on the shell (31), and the slot portion (312) is sleeved on the nut body (1). A piercing needle (313) is provided inside the shell (31), and the piercing needle (313) is close to the opening (311) and is used to pierce the seal (33), and the tip of the piercing needle (313) faces the inner convex ring (13).

2. The anti-slip nut for gas pipe according to claim 1, characterized in that: Chamfered portions (21) are provided on both sides of the inner circumference of the sealing ring (2).

3. The anti-slip nut for gas pipe according to claim 2, characterized in that: The sealing ring (2) is made of nylon, the inner diameter of the sealing ring (2) is D1, the inner diameter of the top of the thread structure is D2, and the inner diameter of the bottom of the thread structure is D3. After the sealing ring (2) is assembled, (D2-D1) / 2=L1, (D3-D2) / 4≤L1≤(D3-D2) / 2.

4. The anti-slip nut for gas pipe according to claim 3, characterized in that: The thickness of the sealing ring (2) is H, the pitch of the thread structure is A, and 0.5A≤H≤1.5A.

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