CN219866221U - Combined sealing plug - Google Patents
Combined sealing plug Download PDFInfo
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- CN219866221U CN219866221U CN202320958232.2U CN202320958232U CN219866221U CN 219866221 U CN219866221 U CN 219866221U CN 202320958232 U CN202320958232 U CN 202320958232U CN 219866221 U CN219866221 U CN 219866221U
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- Prior art keywords
- threaded hole
- plug
- taper
- annular
- plug body
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- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a combined sealing plug, which relates to a part for sealing, and comprises a cylindrical plug body, wherein tapered threaded holes which are coaxially distributed with the cylindrical plug body are formed in the side wall of one end of the plug body, the inner diameter of the inner end of each tapered threaded hole is smaller than the outer diameter of the outer end of each tapered threaded hole, and the outer diameter of the outer end of each tapered threaded hole is smaller than the outer diameter of the plug body; the outer side of the taper threaded hole is provided with a taper plug with the same taper as the taper plug; the outer wall of the end part of the plug body, which is away from the taper threaded hole, is provided with an annular sealing groove, the annular sealing groove is specifically formed by an annular inclined wall and an annular vertical wall, the plane of the annular vertical wall is perpendicular to the axis of the plug body, the annular inclined wall is arranged between the annular vertical wall and the taper threaded hole, and the inner edge of the annular vertical wall is overlapped with the edge of the annular inclined wall, which is away from the taper threaded hole; the annular sealing groove is sleeved with a sealing ring with the outer diameter larger than that of the plug body; the utility model can realize double sealing and improve the sealing effect.
Description
Technical Field
The utility model relates to a part for sealing, in particular to a plug for sealing.
Background
Seals are widely used on hydraulic components, but often fail to seal, resulting in oil leakage. Common orifice sealing forms include plugs, sealing rings, plugs and the like, and sealing failure often occurs in the actual use process, so that oil leakage is caused.
For example, a high-pressure sealing plug disclosed in CN108799495a, on one hand, the cross section of a sealing groove for embedding a sealing ring is in a rectangular structure, and the contact surface between the sealing ring and the sealing groove is small, so that the sealing effect is affected; on the other hand, the expansion sealing is realized by the aid of the first sealing auxiliary block, but the first sealing auxiliary block is embedded into the corresponding groove, so that the expansion sealing is not facilitated.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a combined sealing plug which is used for solving the technical problems that the sealing surface of a sealing ring in the prior art is less in influence on the sealing effect and the like.
The utility model is realized by the following technical scheme:
the combined sealing plug comprises a cylindrical plug body, wherein tapered threaded holes which are coaxially distributed with the cylindrical plug body are formed in one end side wall of the plug body, the inner diameter of the inner end of each tapered threaded hole is smaller than the outer diameter of the outer end of each tapered threaded hole, and the outer diameter of the outer end of each tapered threaded hole is smaller than the outer diameter of the plug body; the outer side of the taper threaded hole is provided with a taper screw plug with the same taper as the taper screw plug, the outer diameter of the thinner end of the taper screw plug is larger than the inner diameter of the inner end of the taper threaded hole, and the outer diameter of the thicker end of the taper screw plug is larger than the outer diameter of the outer end of the taper threaded hole; the end part outer wall of the plug body, which is away from the taper threaded hole, is provided with an annular sealing groove, the annular sealing groove is specifically composed of an annular inclined wall and an annular vertical wall, the plane of the annular vertical wall is perpendicular to the axis of the plug body, the annular inclined wall is arranged between the annular vertical wall and the taper threaded hole, and the inner edge of the annular vertical wall is overlapped with the edge of the annular inclined wall, which is away from the taper threaded hole; and the annular sealing groove is sleeved with a sealing ring with the outer diameter larger than that of the plug body.
Further, a cylindrical threaded hole close to the thinner end of the taper threaded hole is further formed in the plug body, and the end part of the cylindrical threaded hole close to the taper threaded hole is overlapped with the thinner end of the taper threaded hole
Further, a positioning block integrated with the tapered threaded hole in the plug body is arranged on the side wall corresponding to the outer end of the tapered threaded hole, and the minimum vertical distance between the positioning block and the axis of the plug body is larger than the radius of the thicker end of the tapered threaded plug.
Further, the positioning blocks are particularly multiple, and the positioning blocks are uniformly distributed around the axis of the plug body.
Further, the inner edge of the annular vertical wall and the edge of the annular inclined wall, which is away from the taper threaded hole, are rounded.
Further, a conical inclined wall which is coaxially distributed with the outer edge of the outer wall of the plug body, deviating from the conical threaded hole, is arranged at the outer edge of the outer wall of the plug body, and the thicker end of the conical inclined wall is close to the conical threaded hole.
Further, a driving hole for screwing the tapered plug screw to rotate around the shaft is formed in the side wall corresponding to the thicker end of the tapered plug screw.
Further, the driving hole is specifically a threaded hole or an internal hexagonal hole.
Compared with the prior art, the utility model has the following advantages:
according to the combined sealing plug provided by the utility model, the annular inclined wall is arranged, so that the sealing area of the sealing ring during sealing can be effectively increased, and the sealing effect can be effectively improved; the defect of difficult embedding in the expansion sealing process can be effectively avoided by arranging the taper plug screw and the taper threaded hole.
Drawings
Fig. 1 is a schematic structural diagram of a combined sealing plug provided in embodiment 1;
fig. 2 is a schematic structural diagram of a combined sealing plug according to embodiment 2.
In the figure: 1. a plug body; 2. taper threaded hole; 3. taper screw plug; 4. an annular vertical wall; 5. an annular sloped wall; 6. a seal ring; 7. a positioning block; 8. a conical inclined wall; 9. a drive hole; 10. a cylindrical threaded bore.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1, the present embodiment provides a combined sealing plug, which includes a plug body 1, wherein the plug body 1 has a cylindrical structure, and is transversely arranged in fig. 1; in order to realize the combined seal, in this embodiment, first, an annular seal groove is formed on the outer wall of the left end of the plug body 1, the annular seal groove specifically comprises an annular inclined wall 5 and an annular vertical wall 4 with a plane perpendicular to the axis of the plug body 1, the inner diameter of the left end of the annular inclined wall 5 is smaller than the inner diameter of the right end of the annular inclined wall 5, the outer edge of the left end of the annular inclined wall 5 coincides with the inner edge of the annular vertical wall 4, and in combination with fig. 1, a round angle is chamfered between the two (the processing of the annular seal groove is facilitated), and a seal ring 6 is sleeved on the annular seal groove formed by the two, so as to form a heavy seal.
Secondly, a tapered threaded hole 2 which is coaxially distributed with the tapered threaded hole 2 is formed in the right vertical wall of the plug body 1, the inner diameter of the left end of the tapered threaded hole 2 is smaller than the inner diameter of the right end of the tapered threaded hole, threads are formed in the inner wall of the tapered threaded hole, a tapered plug screw 3 is arranged on the outer side of the tapered threaded hole 2, the taper of the tapered plug screw 3 is identical to that of the tapered threaded hole 2, meanwhile, the outer diameter of the left end of the tapered plug screw 3 is smaller than the outer end of the right end of the tapered plug screw, the outer diameter of the left end of the tapered plug screw 3 is larger than the inner diameter of the left end of the tapered threaded hole 2, the outer diameter of the right end of the tapered plug screw 3 is larger than the inner diameter of the right end of the tapered threaded hole 2, namely, when the tapered plug screw 3 is in threaded connection with the tapered threaded hole 2, the tapered plug screw 3 cannot be completely positioned in the tapered threaded hole 2, and when the tapered plug screw 3 is screwed into the tapered threaded hole 2 to a limit position, the right side wall of the tapered plug screw 3 is still positioned on the outer side of the right end of the tapered threaded hole 2 or both, so that later screwing is facilitated; in order to facilitate screwing the taper plug screw 3, a driving hole 9 coaxially distributed with the right end vertical wall of the taper plug screw 3 for driving the taper plug screw to rotate around the shaft is formed in the right end vertical wall of the taper plug screw 3, and the driving hole 9 can be in various forms, such as a threaded hole or an internal hexagonal hole, and in the embodiment, the internal hexagonal hole is selected.
When the pipe end capping operation is carried out, a plug body 1 with the outer diameter being the same as the inner diameter of the pipe (or slightly larger than 1 wire, for example, if the plug body can be plugged under the action of a certain external force) is plugged into the end part of the pipe, a sealing ring 6 is sleeved on the annular sealing groove in advance, after the plug body 1 is integrally plugged into the end part of the pipe, the taper screw plug 3 is screwed into the taper threaded hole 2 and is preliminarily screwed, and after the taper screw plug 3 is continuously screwed into the taper threaded hole 2 through the cooperation of the hexagonal spanner and the driving hole 9, the corresponding part of the taper threaded hole 2 in the plug body 1 is expanded outwards until the expansion reaches the limit; to maintain the expansion effect, a tapered plug screw 3 is left in the threaded bore 2 of the patent.
When the installation operation is finished, the sealing ring 6 is extruded by the inner wall of the pipeline and the inner wall of the annular sealing groove, the contact area between the sealing ring 6 and the sealing ring can be effectively increased due to the arrangement of the annular inclined wall 5, so that the sealing performance is improved, when a medium is flushed from left to right to the sealing ring 6 to apply medium pressure to the sealing ring, the deformation space of the sealing ring 6 from left to right can be gradually reduced under the cooperation of the inner wall of the pipeline and the annular inclined wall 5, and the contact between the sealing ring and the inner wall of the pipeline and the annular inclined wall 5 is further compacted, so that the sealing performance of the sealing ring can be further improved, and a resealing is realized;
and the outer diameter of the right end of the plug body 1 is expanded under the cooperation of the taper threaded hole 2 and the taper screw plug 3, so that the outer wall of the plug body is in further tight contact with the inner wall of the pipeline, and double sealing is formed.
In particular, in order to facilitate the plug body 1 to be plugged into a pipeline initially, in this embodiment, the left end of the transverse wall of the plug body 1 is made to be a tapered inclined wall 8, and the outer diameter of the left end of the tapered inclined wall 8 is smaller than the outer diameter of the right end of the tapered inclined wall 8, so that the plug body 1 can be plugged into a pipeline initially.
Example 2
Referring to fig. 2, this embodiment provides a combined sealing plug, which has substantially the same structure as that shown in embodiment 1, except that: in this embodiment, the positioning blocks 7 which are integrated with the plug body 1 are uniformly arranged on the vertical wall at the right end of the plug body 1, and the distance between the positioning blocks 7 and the axis of the plug body 1 at the minimum vertical distance is greater than the outer diameter of the taper plug screw 3, that is, the taper plug screw 3 cannot contact with the positioning blocks 7 in the process of screwing into the taper threaded hole 2, so that the two operations are not affected, and the positioning blocks 7 can be multiple or one, and are uniformly distributed around the axis of the plug body 1 when multiple positioning blocks are provided.
In the embodiment, the working process is basically the same as that shown in the embodiment 1, except that when the taper plug screw 3 is screwed into the taper threaded hole 2, the positioning block 7 is clamped by an external tool to keep the position of the positioning block relative to the pipeline unchanged, and then the taper plug screw 3 is screwed, so that the taper plug screw 3 and the plug body 1 generate relative rotation movement, and the taper plug screw 3 is conveniently screwed into the taper threaded hole 2; compared with the technical scheme that the tapered plug screw 3 rotates relative to the plug body 1 only by virtue of the friction force between the outer wall of the plug body 1 and the inner wall of the pipeline in the embodiment 1, the defect that the plug body 1 expands in place due to the possibility of synchronous rotation of the tapered plug screw 3 can be effectively avoided.
With the above arrangement, the sealability can be further improved.
In particular, in order to facilitate the extraction of the plug body 1 from the pipe when required, in this embodiment, a cylindrical threaded hole 10 is also provided in the plug body 1, the outer diameter of which coincides with the outer edge of the left end of the tapered threaded hole 2.
When the plug body 1 is required to be pulled out of the pipeline, the taper plug screw 3 is screwed out of the taper threaded hole 2, then a bolt is operated to be in threaded connection with the cylindrical threaded hole 10, and the bolt is pulled outwards until the plug body 1 is pulled out of the pipeline.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The combined sealing plug comprises a cylindrical plug body, and is characterized in that tapered threaded holes which are coaxially distributed with the cylindrical plug body are formed in the side wall of one end of the plug body, the inner diameter of the inner end of each tapered threaded hole is smaller than the outer diameter of the outer end of each tapered threaded hole, and the outer diameter of the outer end of each tapered threaded hole is smaller than the outer diameter of the plug body; the outer side of the taper threaded hole is provided with a taper screw plug with the same taper as the taper screw plug, the outer diameter of the thinner end of the taper screw plug is larger than the inner diameter of the inner end of the taper threaded hole, and the outer diameter of the thicker end of the taper screw plug is larger than the outer diameter of the outer end of the taper threaded hole; the end part outer wall of the plug body, which is away from the taper threaded hole, is provided with an annular sealing groove, the annular sealing groove is specifically composed of an annular inclined wall and an annular vertical wall, the plane of the annular vertical wall is perpendicular to the axis of the plug body, the annular inclined wall is arranged between the annular vertical wall and the taper threaded hole, and the inner edge of the annular vertical wall is overlapped with the edge of the annular inclined wall, which is away from the taper threaded hole; and the annular sealing groove is sleeved with a sealing ring with the outer diameter larger than that of the plug body.
2. The combined sealing plug according to claim 1, wherein the plug body is further provided with a cylindrical threaded hole adjacent to the thinner end of the tapered threaded hole, and the end of the cylindrical threaded hole adjacent to the tapered threaded hole coincides with the thinner end of the tapered threaded hole.
3. The combined sealing plug according to claim 1 or 2, wherein a positioning block integrated with the tapered threaded hole is arranged on a side wall corresponding to the outer end of the tapered threaded hole in the plug body, and the minimum vertical distance between the positioning block and the axis of the plug body is larger than the radius of the thicker end of the tapered plug.
4. A combined sealing plug according to claim 3, wherein the plurality of positioning blocks are distributed uniformly about the axis of the plug body.
5. The modular sealing plug of claim 4, wherein the inner edge of the annular vertical wall and the edge of the annular sloped wall facing away from the tapered threaded bore are rounded.
6. The combined sealing plug according to claim 4 or 5, wherein the outer wall of the plug body is provided with conical inclined walls which are coaxially distributed at the outer edge away from the conical threaded hole, and the thicker end of each conical inclined wall is adjacent to the conical threaded hole.
7. The combined sealing plug of claim 6, wherein the sidewall of the tapered plug corresponding to the thicker end is provided with a driving hole for screwing the tapered plug to rotate around the shaft.
8. The modular sealing plug of claim 7, wherein the drive bore is embodied as a threaded bore or an internal hexagonal bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320958232.2U CN219866221U (en) | 2023-04-25 | 2023-04-25 | Combined sealing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320958232.2U CN219866221U (en) | 2023-04-25 | 2023-04-25 | Combined sealing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866221U true CN219866221U (en) | 2023-10-20 |
Family
ID=88334381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320958232.2U Active CN219866221U (en) | 2023-04-25 | 2023-04-25 | Combined sealing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866221U (en) |
-
2023
- 2023-04-25 CN CN202320958232.2U patent/CN219866221U/en active Active
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