CN203784512U - Blind flange - Google Patents
Blind flange Download PDFInfo
- Publication number
- CN203784512U CN203784512U CN201420180555.4U CN201420180555U CN203784512U CN 203784512 U CN203784512 U CN 203784512U CN 201420180555 U CN201420180555 U CN 201420180555U CN 203784512 U CN203784512 U CN 203784512U
- Authority
- CN
- China
- Prior art keywords
- blind flange
- boss
- seal groove
- flange body
- theta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a blind flange which comprises a blind flange body. A cylindrical boss is arranged at one end of the blind flange body. A first sealing groove recessed inwards is formed in the circumferential face of the boss. A dip angle theta is formed by at least one side wall of the first sealing groove and the circumferential face of the boss, wherein theta is larger than 2 degrees and smaller than or equal to 5 degrees. On the periphery of the boss, a second sealing groove which is annularly recessed is further formed in the end face of the blind flange body. The blind flange aims at overcoming the defects in the prior art, a rigidity seal is convenient to install through the blind flange, and an elastic metal sealing ring or the sealing groove is prevented from being damaged, generating gaps and losing the sealing function.
Description
Technical field
The utility model relates to a kind of blind flange.
Background technique
Blind flange, is again blank flange, is middle flange not with holes, for sealing pipe stopper.Effect is the same with welding end socket, and blind flange can be unloaded down at any time, and welding end socket is not all right.The form kind of sealing surface is more, has plane, convex surface, male and fomale(M&F), tongue and groove, ring joint face.Conventionally the soft seal mode adopting, because rubber seal deformation quantity is excessive, the material of rubber seal will follow the string, and the time has been grown and will lose seal action, and the corrosion-resistant of rubber.Now, adopt hard sealing means, can overcome the above problems, the conventional metal o-ring that is firmly sealed into.Therefore, the sidewall of the seal groove on existing blind flange is vertical with bottom land.The shortcoming of prior art is, rubber seal is directly replaced with to metal elastic-sealed circle, and when mounting flange covers, metal elastic-sealed circle is subject to lateral extrusion power, can produce distortion axially and radially, because the part of metal elastic-sealed circle in seal groove is shaftless to extending space, force bearing point just concentrates on sealing notch place, and the plasticity of metal o-ring can not show a candle to rubber seal, now, can cause metal elastic-sealed circle or seal groove impaired, produce gap, lose seal action.
Model utility content
The technical problems to be solved in the utility model is, overcomes the shortcoming of above prior art, and a kind of blind flange of being convenient to install hard sealing is provided.
Technical solution of the present utility model is, a kind of blind flange, comprise blind flange body, one end of described blind flange body is provided with cylinder boss, the circumferential surface of boss is provided with first seal groove caving inward, described one of them sidewall of the first seal groove becomes outside inclination angle [theta] (2 ° of < θ≤5 °) with the circumferential surface of described boss, at the place, periphery of boss, be also provided with the second seal groove of annular recess on the end face of blind flange body.
Adopt after above structure, the utility model compared with prior art, have the following advantages: owing to one of them sidewall of the first seal groove is become to outside inclination angle [theta] (2 ° of < θ≤5 °) with the circumferential surface of described boss, rubber seal is directly replaced with to metal elastic-sealed circle, when mounting flange covers, metal elastic-sealed circle is subject to lateral extrusion power, can produce distortion axially and radially, because the part of metal elastic-sealed circle in seal groove has axial extending space, force bearing point will be uniformly distributed, now, can avoid metal elastic-sealed circle or seal groove impaired, produce gap, lose seal action.
As preferably, described blind flange body and boss are formed in one.Its benefit is, adopts integrated processing method, simple in structure, and stable connection reduces production and processing cost.
Institute is as preferred, and the two side of stating the first seal groove all becomes outside inclination angle [theta] with the circumferential surface of boss.Its benefit is further to promote the installation convenience of the hard sealing of the first seal groove.
As preferably, described inclination angle [theta] is 5 °.Its benefit is, do not reduce under the prerequisite of sealing guaranteeing, reduces low-angle difficulty of processing, and is more conducive to the installation of hard sealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A face cross-sectional schematic of the present utility model.
Fig. 3 is local enlarged diagram of the present utility model.
Fig. 4 is stereogram of the present utility model.
Diagram, 1, blind flange body; 2, boss; 3, the first seal groove; 4, the second seal groove; 5, counterbore; 6, chamfering.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 2 and Figure 4, a kind of blind flange, comprise blind flange body 1, one end of described blind flange body 1 is provided with cylinder boss 2, the circumferential surface of boss 2 is provided with first seal groove 3 caving inward, described first seal groove 3 one of them sidewall become outside inclination angle [theta] (2 ° of < θ≤5 °) with the circumferential surface of described boss 2, at the place, periphery of boss 2, be also provided with the second seal groove 4 of annular recess on the end face of blind flange body 1.
As shown in Figure 2, described blind flange body 1 is formed in one with boss 2.
As shown in Figure 1, the end face of described blind flange body 1 is rectangular, on four corners of end face, is respectively equipped with blind flange body 1 is fixed on to the counterbore 5 on valve housing.
As shown in Figures 2 and 3, the two side of described the first seal groove 3 all becomes outside inclination angle [theta] with the circumferential surface of boss 2.
As shown in Figure 3, described inclination angle [theta] is 5 °.
As shown in Figure 2 and Figure 4, the port of described boss 2 is provided with chamfering 6.
Below only just the optimum scheme of the utility model example is described, but can not be interpreted as it is limitations on claims.The utility model is not only confined to above example, and its concrete structure has allowed multiple variation, as long as the variation in these claims is all within protection domain of the present utility model.
Claims (4)
1. a blind flange, comprise blind flange body (1), one end of described blind flange body (1) is provided with cylinder boss (2), the circumferential surface of boss (2) is provided with first seal groove (3) caving inward, it is characterized in that: one of them sidewall of described the first seal groove (3) becomes outside inclination angle [theta] (2 ° of < θ≤5 °) with the circumferential surface of described boss (2), at the place, periphery of boss (2), on the end face of blind flange body (1), be also provided with second seal groove (4) of annular recess.
2. a kind of blind flange according to claim 1, is characterized in that: described blind flange body (1) is formed in one with boss (2).
3. a kind of blind flange according to claim 1, is characterized in that: the two side of described the first seal groove (3) all becomes outside inclination angle [theta] with the circumferential surface of boss (2).
4. a kind of blind flange according to claim 1, is characterized in that: described inclination angle [theta] is 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420180555.4U CN203784512U (en) | 2014-04-14 | 2014-04-14 | Blind flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420180555.4U CN203784512U (en) | 2014-04-14 | 2014-04-14 | Blind flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784512U true CN203784512U (en) | 2014-08-20 |
Family
ID=51320699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420180555.4U Expired - Fee Related CN203784512U (en) | 2014-04-14 | 2014-04-14 | Blind flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784512U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191556A (en) * | 2014-09-21 | 2014-12-10 | 金方明 | Injection molding machine gland base and heat processing technology thereof |
| CN104864219A (en) * | 2015-04-29 | 2015-08-26 | 苏州福润机械有限公司 | Closing plate for pressure pipeline |
| CN106838532A (en) * | 2015-12-04 | 2017-06-13 | 潘珺珺 | A kind of blind plate for conveyance conduit |
| CN106838536A (en) * | 2015-12-03 | 2017-06-13 | 王建国 | A kind of tight type pipeline blind plate |
| CN106838537A (en) * | 2015-12-04 | 2017-06-13 | 潘珺珺 | A kind of stable type blind plate |
-
2014
- 2014-04-14 CN CN201420180555.4U patent/CN203784512U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191556A (en) * | 2014-09-21 | 2014-12-10 | 金方明 | Injection molding machine gland base and heat processing technology thereof |
| CN104864219A (en) * | 2015-04-29 | 2015-08-26 | 苏州福润机械有限公司 | Closing plate for pressure pipeline |
| CN106838536A (en) * | 2015-12-03 | 2017-06-13 | 王建国 | A kind of tight type pipeline blind plate |
| CN106838532A (en) * | 2015-12-04 | 2017-06-13 | 潘珺珺 | A kind of blind plate for conveyance conduit |
| CN106838537A (en) * | 2015-12-04 | 2017-06-13 | 潘珺珺 | A kind of stable type blind plate |
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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: 20140820 Termination date: 20170414 |