CN102853104A - Metal hard sealing ball valve base - Google Patents
Metal hard sealing ball valve base Download PDFInfo
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- CN102853104A CN102853104A CN 201210292207 CN201210292207A CN102853104A CN 102853104 A CN102853104 A CN 102853104A CN 201210292207 CN201210292207 CN 201210292207 CN 201210292207 A CN201210292207 A CN 201210292207A CN 102853104 A CN102853104 A CN 102853104A
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Abstract
The invention discloses a metal hard sealing ball valve base. The valve base is arranged between a ball body and a valve body and is of a ring-shaped structure, one side of the valve base is provided with a valve body contact surface, the other side of the valve base is provided with a ball body contact surface, and the valve body contact surface is provided with a wave spring, a right compression ring, a left compression ring, a right sealing gasket and a left sealing gasket; the ball valve base is characterized in that the ball body contact surface is a circular conical surface, and the ball body contact surface is provided with a sealing surface; the section of the sealing surface is a circular arc, the sealing surface is contacted with the ball body sealing surface on the ball body and is corresponding to the ball body contact surface; and the valve base wave spring is a two-way wave spring and is arranged between the right compression ring and the left compression ring. The metal hard sealing ball valve base provided by the invention has the advantages that the structure is compact and reasonable, and compared with the existing valve bases, the torque is small, the start-stop operation is flexible, the attrition under the using working condition is small, the sealing property is high, the high temperature resistance property is realized, and the service life is long.
Description
Technical field
The present invention relates to a kind of metal hard-sealing ball valve valve seat.
Background technique
Existing metal hard-sealing ball valve: 1. adopt metal to metal seal between spheroid and the valve seat, adopt rubber seal between valve seat and the valve body, the common bearing temperature of rubber can not surpass 300 ℃, can't satisfy every profession and trade to the seal request under the high temperature condition.2. adopt metal to metal seal between spheroid and the valve seat, adopt graphite-filled sealing between valve seat and the valve body.When sealing surfaces gap during less than the medium molecule diameter, the guarantee medium is non-leakage.That gap width that prevents the medium seepage must be little of 0.003 μ m.But, still can surpass 0.1 μ m, large 30 times than water molecule diameter even advance the metal surface convex peak height of precise finish.Can not satisfy the requirement of high-grade sealing so adopt metal to metal seal between spheroid and the valve seat.
Summary of the invention
The object of the invention is to overcome the above problem that prior art exists, provide a kind of good seal performance, resistant to elevated temperatures metal hard-sealing ball valve valve seat.1. sealing surface of seat sprayed wc .2. packing grease is enclosed one deck oil film effect hydrophily raising sealing and greasy property by the greasing hole at sealing surfaces.3. the graphite synthetic grease stays graphite granule, lubricated spheroid sealing surface in the above base oil vaporization of temperature 400 degree.The distortion of high-temperature metal matrix causes the sealing surface hydraulic performance decline, utilizes inaccessible phenomenon, and the gap is filled up by graphite granule gradually, and when the gap was no more than 0.02mm, medium stopped seepage.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of metal hard-sealing ball valve valve seat, valve seat are arranged between spheroid and the valve body, structure ringwise, and a side is the valve body surface of contact, and opposite side is the spheroid surface of contact, and described valve body surface of contact is provided with ripple spring, right pressure ring, left pressure ring, right sealing gasket, left sealing gasket.Described spheroid surface of contact is conical surface, is provided with sealing surface on the described spheroid surface of contact.Described sealing surface cross section is circular arc, and sealing surface contacts with the set ball seal face of spheroid, and sealing surface spheroid surface of contact is corresponding.
Described valve seat ripple spring is two-way ripple spring, is arranged between described right pressure ring, the left pressure ring.
Described right pressure ring, left pressure ring one end contact with telling ripple spring, the other end composition double-channel sealing structure that contacts with the right sealing gasket of tell, left sealing gasket.Be arranged between valve seat and the valve body.
Preferably, the material of the right sealing gasket of described rubber, left sealing gasket is graphite packing.
Preferably, described graphite packing is trapezoidal and the parallelogram combination.
Preferably, described sealing surface of seat sprayed wc.
Further, offer the greasing groove on the described valve seat, described greasing groove is arranged at described spheroid surface of contact.Described greasing groove and vertical setting the in valve seat greasing hole.
Further, described valve seat greasing hole, an end is communicated with the greasing groove, and the other end is arranged at the spheroid surface of contact.Parallel and fluid medium channel be arranged in parallel.
Packing grease is filled with greasing slot wave spring in ripple spring zone, further described valve seat greasing hole.
Preferably, described valve base sealing lubricating grease is the graphite synthetic grease.
The invention has the beneficial effects as follows:
Compact structure of the present invention, rationally; Compare with existing valve seat, moment of torsion is little, opens and closes flexible operation; Wear and tear under applying working condition little, sealability is high, and is high temperature resistant, long service life.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and cooperate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 annexation partial cutaway schematic of the present invention;
Number in the figure explanation: 1, valve body, 1a, valve body greasing hole, 2, spheroid, 2a ball seal face, 3, valve seat, 3a, sealing surface, 3b, greasing hole, 3c, spheroid surface of contact, 3d, valve body surface of contact, 3e, greasing groove, 4, the ripple spring, 5a, right pressure ring, 5b, left pressure ring, 6a, right sealing gasket, 6b, left sealing gasket, 7, fluid medium channel.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
With reference to shown in Figure 1:
A kind of metal hard-sealing ball valve valve seat, valve seat 3 is arranged between spheroid 2 and the valve body 1, structure ringwise, and a side is valve body surface of contact 3d, opposite side is spheroid surface of contact 3c, and described valve body surface of contact 3d is provided with ripple spring 4, right pressure ring 5a, left pressure ring 5b, right sealing gasket 6a, left sealing gasket 6b.Described spheroid surface of contact 3c is conical surface, is provided with sealing surface 3a on the described spheroid surface of contact 3c.Described sealing surface 3a cross section is circular arc, and sealing surface 3a contacts with spheroid 2 set ball seal face 2a, and 1b is corresponding for sealing surface 3a spheroid surface of contact.
Described valve seat ripple spring 4 is two-way ripple spring, is arranged between described right pressure ring 5a, the left pressure ring 5b.
Described right pressure ring 5a, left pressure ring 5b one end contact with telling ripple spring 4, the other end composition double-channel sealing structure that contacts with the right sealing gasket 6a of tell, left sealing gasket 6b.Be arranged between valve seat 3 and the valve body 1.
Preferably, the material of the right sealing gasket 6a of described rubber, left sealing gasket 6b is graphite packing.
Preferably, described graphite packing is trapezoidal and the parallelogram combination.
Preferably, described sealing surface of seat 3a sprayed wc.
Further, offer greasing groove 3e on the described valve seat 3, described greasing groove 3e is arranged at spheroid surface of contact 3d.Greasing groove 3e and vertical setting of valve seat greasing hole 3b.
Further, described valve seat greasing hole 3b, an end is communicated with greasing groove 3e, and the other end is arranged at spheroid surface of contact 3c.Parallel and fluid medium channel 7 be arranged in parallel.
Further, packing grease is filled with 3b, greasing groove 3e, ripple spring 4 in ripple spring 4 zones, described valve seat greasing hole.Seal failure can be injected emergency sealing fat.
Preferably, described valve base sealing lubricating grease is the graphite synthetic grease.
During valve closing, line pressure promotes spheroid 3 and valve seat 2.Valve seat 2 positions change extruding ripple spring 4, and ripple spring 4 elastic force act on pressure ring 5a pressure ring 5b and sealing gasket 6a sealing gasket 6b.Pressure increases sealing gasket and valve body surface of contact 3d, valve body 1 gap reduce, and sealability improves relatively.During valve opening and closing, the cavity area volume of placing ripple spring 4 is changed by the line pressure variable effect, and extruding lubricating grease is through greasing groove 3e, greasing hole 3b lubrication and seal face.Opening-closing process also is greasing.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. metal hard-sealing ball valve valve seat, valve seat (3) is arranged between spheroid (2) and the valve body (1), structure ringwise, one side is valve body surface of contact (3d), opposite side is spheroid surface of contact (3c), and described valve body surface of contact (3d) is provided with ripple spring (4), right pressure ring (5a), left pressure ring (5b), right sealing gasket (6a), left sealing gasket (6b).It is characterized in that: described spheroid surface of contact (3c) is conical surface, is provided with sealing surface (3a) on the described spheroid surface of contact (3c).Described sealing surface (3a) cross section is circular arc, and sealing surface (3a) contacts with the set ball seal face of spheroid (2) (2a), and sealing surface (3a) spheroid surface of contact (1b) is corresponding.
2. metal hard-sealing ball valve valve seat according to claim 1, it is characterized in that: described valve seat ripple spring (4) is two-way ripple spring, is arranged between described right pressure ring (5a), the left pressure ring (5b).
3. metal hard-sealing ball valve valve seat according to claim 2, it is characterized in that: described right pressure ring (5a), left pressure ring (5b) end contact with telling ripple spring (4), the other end composition double-channel sealing structure that contacts with the right sealing gasket of tell (6a), left sealing gasket (6b).Be arranged between valve seat (3) and the valve body (1).
4. metal hard-sealing ball valve valve seat according to claim 3, it is characterized in that: the material of the right sealing gasket of described rubber (6a), left sealing gasket (6b) is graphite packing.
5. metal hard-sealing ball valve valve seat according to claim 4 is characterized in that: described graphite packing is trapezoidal and parallelogram combination.
6. metal hard-sealing ball valve valve seat according to claim 1 is characterized in that: described sealing surface of seat (3a) sprayed wc.
7. metal hard-sealing ball valve valve seat according to claim 1, it is characterized in that: offer greasing groove (3e) on the described valve seat (3), described greasing groove (3e) is arranged at described spheroid surface of contact (3d).Described greasing groove (3e) and the vertical setting in valve seat greasing hole (3b).
8. metal hard-sealing ball valve valve seat according to claim 7 is characterized in that: described valve seat greasing hole (3b), and an end is communicated with greasing groove (3e), and the other end is arranged at spheroid surface of contact (3c).Parallel and fluid medium channel (7) be arranged in parallel.
9. according to claim 2, metal hard-sealing ball valve valve seat claimed in claim 7, it is characterized in that: described valve seat greasing hole ripple spring (4) zone with (3b), greasing groove (3e), ripple spring (4) fill packing grease.
10. metal hard-sealing ball valve valve seat according to claim 9, it is characterized in that: described valve base sealing lubricating grease is the graphite synthetic grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210292207 CN102853104A (en) | 2012-08-11 | 2012-08-11 | Metal hard sealing ball valve base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210292207 CN102853104A (en) | 2012-08-11 | 2012-08-11 | Metal hard sealing ball valve base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102853104A true CN102853104A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210292207 Pending CN102853104A (en) | 2012-08-11 | 2012-08-11 | Metal hard sealing ball valve base |
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| Country | Link |
|---|---|
| CN (1) | CN102853104A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165235A (en) * | 2014-07-31 | 2014-11-26 | 章华 | Ball valve metal valve base with elastic compensation function |
| CN106523731A (en) * | 2016-12-16 | 2017-03-22 | 重庆川仪调节阀有限公司 | Lock hopper ball valve |
| CN109595356A (en) * | 2019-02-19 | 2019-04-09 | 宁夏银星吴忠仪表流体控制有限公司 | Energy storage type low-frictional force seal ball-valve |
-
2012
- 2012-08-11 CN CN 201210292207 patent/CN102853104A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165235A (en) * | 2014-07-31 | 2014-11-26 | 章华 | Ball valve metal valve base with elastic compensation function |
| CN106523731A (en) * | 2016-12-16 | 2017-03-22 | 重庆川仪调节阀有限公司 | Lock hopper ball valve |
| CN109595356A (en) * | 2019-02-19 | 2019-04-09 | 宁夏银星吴忠仪表流体控制有限公司 | Energy storage type low-frictional force seal ball-valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhang Yebao Document name: Notification of before Expiration of Request of Examination as to Substance |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |