CN202834049U - Auxiliary hole sealing structure - Google Patents
Auxiliary hole sealing structure Download PDFInfo
- Publication number
- CN202834049U CN202834049U CN 201220445769 CN201220445769U CN202834049U CN 202834049 U CN202834049 U CN 202834049U CN 201220445769 CN201220445769 CN 201220445769 CN 201220445769 U CN201220445769 U CN 201220445769U CN 202834049 U CN202834049 U CN 202834049U
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- sealing
- hole
- screw head
- screw
- auxiliary hole
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Abstract
An auxiliary hole sealing structure mainly solves the problems that blocking and sealing properties of an existing hydraulic component auxiliary hole are poor and an installation size is large The auxiliary hole sealing structure is characterized in that a conical hole (5) is formed in the outer end of a thread hole (4) in an auxiliary hole (3), a sealing plug (1) comprises a screw head (6) and a screw (7), the outer wall of the screw head (6) is in a circular shape, an annular groove (8) is formed in the position where the screw head (6) is connected with the screw (7), an O-shaped sealing ring (2) is arranged in the annular groove (8), the O-shaped sealing ring (2) is located at the position of the conical hole (5) after the sealing plug (1) is completely screwed into the auxiliary hole (3), and meanwhile the lower edge of the screw head (6) is also contacted with the hole wall of the conical hole (5) so that a rigidity sealing is formed. According to the auxiliary hole sealing structure, the O-shaped sealing ring is added, a structure of combination of a soft sealing and the rigidity sealing is adopted, and therefore a sealing property is good, installation size is small, and occupied space is small.
Description
Technical field
The utility model relates to the aborning seal arrangement of auxiliary hole of hydraulic element, belongs to a kind of fabrication hole sealing structure.
Background technique
Make the field at hydraulic element, often need to make auxiliary hole, to realize the connection between the different ducts, usually the technique aperture need to be stopped up, the sealing configuration that widely uses in this field at present comprises the taper screw plug, the screw plug of various seal form, the screw plug of these two kinds of structures can satisfy general seal request, yet, all have separately some shortcomings, cone blocking can't guarantee reliable sealing, and the screw plug head installation dimension of other structures is larger, thereby affect the structural design of hydraulic element, for this reason, need to develop a kind of both had good seal action, the fabrication hole sealing structure that has again less installation dimension.
The model utility content
In order to overcome existing hydraulic element technique aperture plug for seal poor performance and the large deficiency of installation dimension, the utility model provides a kind of fabrication hole sealing structure, this fabrication hole sealing structure has increased " O " shape seal ring, the structure that adopts soft seal and hard sealing to combine, good seal performance, installation dimension is less, takes up space little.
The technical solution of the utility model is: a kind of fabrication hole sealing structure comprises sealing screw plug and auxiliary hole, the sealing screw plug is threaded in the auxiliary hole, tapped hole outer end in the auxiliary hole is provided with conical bore, the sealing screw plug comprises that outer wall is circular screw head and screw rod, the jointing place of screw head and screw rod is provided with circular groove, be provided with " O " shape seal ring in the circular groove, after the sealing screw plug screws in auxiliary hole fully, " O " shape seal ring is positioned at the conical bore place, simultaneously, the lower limb of screw head also contacts with the hole wall of conical bore and forms hard sealing.
Conical bore in the described auxiliary hole is provided with counterbore outward, and the degree of depth of counterbore is not less than the height of screw head.
It is Spielpassung between described screw head and the counterbore.
Gap between described screw head and the counterbore is between 0.025～0.15mm.
The cone angle of described conical bore is between 20 °～30 °.
Described " O " shape seal ring in the stretch rate at circular groove place between 0～5%.
The center, outer end of described screw head is provided with inner hexagonal hole.
The beneficial effects of the utility model are: owing to taking such scheme, " O " shape seal ring is compressed under the extruding of sealing screw plug, forms soft seal between the conical bore in sealing screw plug and the auxiliary hole, and " O " shape seal ring plays seal action; Meanwhile, the edge of the screw head of sealing on the screw plug 1 is pressed on the inwall of conical bore, forms firmly sealing, has prevented that effectively high-pressure medium from extruding " O " shape seal ring, has high voltage performance, and sealing reliably.Therefore, the structure that the utility model adopts soft seal and hard sealing to combine, good seal performance, installation dimension is less, takes up space little.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is structural representations of sealing screw plug 1 among Fig. 1.
Accompanying drawing 3 is structural representations of auxiliary hole 3 among Fig. 1.
1-sealing screw plug among the figure, 2-" O " shape seal ring, 3-auxiliary hole, 4-tapped hole, 5-conical bore, 6-screw head, 7-screw rod, 8-circular groove, 9-counterbore, 10-inner hexagonal hole, α-cone angle.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with Fig. 2, shown in Figure 3, a kind of fabrication hole sealing structure comprises sealing screw plug 1 and auxiliary hole 3, sealing screw plug 1 is threaded in the auxiliary hole 3, tapped hole 4 outer ends in the auxiliary hole 3 are provided with conical bore 5, sealing screw plug 1 comprises that outer wall is circular screw head 6 and screw rod 7, screw head 6 is provided with circular groove 8 with the jointing place of screw rod 7, be provided with " O " shape seal ring 2 in the circular groove 8, after sealing screw plug 1 screws in auxiliary hole 3 fully, " O " shape seal ring 2 is positioned at conical bore 5 places, simultaneously, the lower limb of screw head 6 also contacts with the hole wall of conical bore 5 and forms hard sealing.Owing to taking technique scheme, " O " shape seal ring 2 is compressed under the extruding of sealing screw plug 1, forms soft seal between the conical bore 5 in sealing screw plug 1 and the auxiliary hole 3, and " O " shape seal ring 2 plays seal action; Meanwhile, the edge of the screw head 6 of sealing on the screw plug 1 is pressed on the inwall of conical bore 5, forms firmly sealing, has prevented that effectively high-pressure medium from extruding " O " shape seal ring 2, has high voltage performance, and sealing reliably.Therefore, the structure that the utility model adopts soft seal and hard sealing to combine, good seal performance, installation dimension is less, takes up space little.
Be Spielpassung between described screw head 6 and the counterbore 9.Compact structure, the centring property of sealing screw plug 1 is good, easy for installation.
Gap between described screw head 6 and the counterbore 9 is between 0.025～0.15mm.The present embodiment is optimal way, and quality of fit is higher, certainly also can select other matching gap according to working ability.
The cone angle of described conical bore 5 is between 20 °～30 °.The present embodiment is optimal way, can guarantee that in this scope " O " shape seal ring 2 is compacted, also can guarantee the reliability of the hard sealing of inwall of screw head 6 and conical bore 5 simultaneously.
Described " O " shape seal ring (2) in the stretch rate at circular groove 8 places between 0～5%.Because after sealing screw plug 1 screws in auxiliary hole 3 fully, " O " shape seal ring (2) is in tension state at circular groove 8, stretch rate excessive sealability and working life that then can affect " O " shape seal ring 2 is therefore to the to some extent requirement of " O " shape seal ring stretch rate.
The center, outer end of described screw head 6 is provided with inner hexagonal hole 10.Hex hole 10 is used for 1 installation and removal of sealing screw plug, can adopt the inner hexagon spanner instrument, and easy to use, appearance is smooth, has reduced to take up space.
Claims (7)
1. fabrication hole sealing structure, comprise sealing screw plug (1) and auxiliary hole (3), sealing screw plug (1) is threaded in the auxiliary hole (3), it is characterized in that: tapped hole (4) outer end in the auxiliary hole (3) is provided with conical bore (5), sealing screw plug (1) comprises that outer wall is circular screw head (6) and screw rod (7), screw head (6) is provided with circular groove (8) with the jointing place of screw rod (7), be provided with " O " shape seal ring (2) in the circular groove (8), after sealing screw plug (1) screws in auxiliary hole (3) fully, " O " shape seal ring (2) is positioned at conical bore (5) and locates, simultaneously, the lower limb of screw head (6) also contacts with the hole wall of conical bore (5) and forms hard sealing.
2. a kind of fabrication hole sealing structure according to claim 1 is characterized in that: the conical bore (6) in the auxiliary hole (3) is outer to be provided with counterbore (9), and the degree of depth of counterbore (9) is not less than the height of screw head (6).
3. a kind of fabrication hole sealing structure according to claim 2 is characterized in that: be Spielpassung between screw head (6) and the counterbore (9).
4. a kind of fabrication hole sealing structure according to claim 3, it is characterized in that: the gap between screw head (6) and the counterbore (9) is between 0.025～0.15mm.
5. according to claim 1,2,3 or 4 described a kind of fabrication hole sealing structures, it is characterized in that: the cone angle of conical bore (5) is between 20 °～30 °.
6. according to claim 1,2,3 or 4 described a kind of fabrication hole sealing structures, it is characterized in that: the stretch rate that " O " shape seal ring (2) is located at circular groove (8) is between 0～5%.
7. according to claim 1,2,3 or 4 described a kind of fabrication hole sealing structures, it is characterized in that: the center, outer end of screw head (6) is provided with inner hexagonal hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445769 CN202834049U (en) | 2012-09-03 | 2012-09-03 | Auxiliary hole sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445769 CN202834049U (en) | 2012-09-03 | 2012-09-03 | Auxiliary hole sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202834049U true CN202834049U (en) | 2013-03-27 |
Family
ID=47945758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220445769 Expired - Fee Related CN202834049U (en) | 2012-09-03 | 2012-09-03 | Auxiliary hole sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202834049U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818023A (en) * | 2012-09-03 | 2012-12-12 | 圣邦集团有限公司 | Sealing structure of fabrication hole |
| CN104214394A (en) * | 2013-06-05 | 2014-12-17 | 浙江盾安禾田金属有限公司 | Valve body cover and valve |
| CN105276185A (en) * | 2014-07-18 | 2016-01-27 | 神讯电脑(昆山)有限公司 | Locking structure |
| CN108799495A (en) * | 2018-05-07 | 2018-11-13 | 江苏科迈液压控制系统有限公司 | A kind of High Pressure Sealing Gland |
| CN112709744A (en) * | 2021-01-13 | 2021-04-27 | 北京航天试验技术研究所 | Seal structure of screw hole under low temperature, high pressure liquefied gas environment |
-
2012
- 2012-09-03 CN CN 201220445769 patent/CN202834049U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818023A (en) * | 2012-09-03 | 2012-12-12 | 圣邦集团有限公司 | Sealing structure of fabrication hole |
| CN104214394A (en) * | 2013-06-05 | 2014-12-17 | 浙江盾安禾田金属有限公司 | Valve body cover and valve |
| CN105276185A (en) * | 2014-07-18 | 2016-01-27 | 神讯电脑(昆山)有限公司 | Locking structure |
| CN108799495A (en) * | 2018-05-07 | 2018-11-13 | 江苏科迈液压控制系统有限公司 | A kind of High Pressure Sealing Gland |
| CN112709744A (en) * | 2021-01-13 | 2021-04-27 | 北京航天试验技术研究所 | Seal structure of screw hole under low temperature, high pressure liquefied gas environment |
| CN112709744B (en) * | 2021-01-13 | 2024-06-11 | 北京航天试验技术研究所 | Sealing structure of threaded hole under low-temperature and high-pressure liquefied gas environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20160903 |