CN201547300U - Metal hard-seal ball valve - Google Patents
Metal hard-seal ball valve Download PDFInfo
- Publication number
- CN201547300U CN201547300U CN2009200428466U CN200920042846U CN201547300U CN 201547300 U CN201547300 U CN 201547300U CN 2009200428466 U CN2009200428466 U CN 2009200428466U CN 200920042846 U CN200920042846 U CN 200920042846U CN 201547300 U CN201547300 U CN 201547300U
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- Prior art keywords
- valve
- ball
- sealing
- seats
- metal hard
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- Expired - Lifetime
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Abstract
The utility model discloses a metal hard-seal ball valve, which comprises a valve body, a valve cover, a valve ball, valve seats, a valve stem, a support and a driving device. The valve body and the valve cover are connected to form a cavity, the valve ball provided with a through hole is located inside the cavity, the upper end of the valve ball is connected with the valve stem, two sides of the valve ball are respectively provided with the valve seats, the support is fixedly connected with the valve body through screw nails, the driving device is connected with a valve rod shaft through the support, the valve seats are made of metal materials, and a sealing gasket, a press ring and a butterfly spring are sequentially arranged among the valve seats and the valve body. The metal hard-seal ball valve utilizes two metal-to-metal sealing forms among the valve body and the valve seats, among the valve cover and the valve seats and among the valve seats and the valve ball, greatly strengthens sealing property, and can be used for working conditions with temperature exceeding 500 DEG C. In addition, through coating hard alloy or hardened materials on surfaces of the valve seats and the valve ball, the valve seats and the valve ball have precision and hardness which are required by sealing, and the purpose-made valve seats with elasticity and the butterfly spring have extremely low operation torque.
Description
Technical field
The utility model relates to a kind of ball valve, relates in particular to a kind of metal hard-sealing ball valve of metal to metal seal.
Background technique
Ball valve is mainly used in every field such as oil, chemical industry, iron and steel, metallurgy and electric power, valve with respect to other controlling plumbing fixtures medium circulations, ball valve has advantages such as resistance of medium is little, easy to operate, but the valve seat of traditional ball valve generally all adopts soft material, because the elasticity of soft material is relatively good, has bigger decrement, but sealing is not fine, and its heat resistance is not strong, usually the temperature that can bear can not surpass 300 ℃, can't satisfy the requirement of domestic and international every profession and trade to sealing and high temperature.
The model utility content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of good seal performance, resistant to elevated temperatures metal hard-sealing ball valve.
The utility model is achieved through the following technical solutions:
A kind of metal hard-sealing ball valve, comprise valve body, valve gap, valve ball, valve seat, valve rod, support and drive unit, valve body and valve gap are connected to form a cavity, the valve ball that is provided with through hole is positioned at cavity, the upper end of valve ball links to each other with valve rod, the both sides of valve ball are respectively arranged with valve seat, support is fixedlyed connected with valve body by screw, and drive unit is connected with stem shaft by support, described valve seat is a metallic material, is disposed with sealing gasket, pressure ring and butterfly spring between valve body and valve seat (4), valve gap and valve seat.
The above-mentioned valve seat and the surface of valve ball all are coated with hardened material or cemented carbide such as Tungsten carbite or chromium carbide or carry out nitriding treatment.
The material of above-mentioned sealing gasket is the graphite packing of V-structure.
The beneficial effects of the utility model are: metal hard-sealing ball valve described in the utility model, what adopt between its valve body and valve seat, valve gap and valve seat, valve seat and valve ball is the two seals form of metal to metal, strengthened sealability widely, and can be used for surpassing 500 ℃ operating mode, in addition, by the surface of valve seat and valve ball being carried out pile-up welding hard alloy or spraying hardened material, make it to have sealing necessary precision and hardness, and special rubber-like valve seat and belleville spring make and the utlity model has lower operation moment of torsion.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Main reference character implication among the figure:
1, valve body 2, valve gap 3, valve ball 4, valve seat
5, valve rod 13, pressure ring 14, sealing gasket 15, support
Embodiment
Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail:
Fig. 1 is a structural representation of the present utility model.
As shown in Figure 1: a kind of metal hard-sealing ball valve, comprise valve body 1, valve gap 2, valve ball 3, valve seat 4, valve rod 5, support 15 and drive unit (not shown), valve body 1 and valve gap 2 are fixedly connected to form a cavity by double-screw bolt 18 and the nut b19 that is positioned at its two ends, form sealing by wound gasket a7, the valve ball 3 that is provided with through hole is positioned at cavity, the both sides of valve ball 3 are respectively arranged with valve seat 4, described valve seat 4 is a metallic material, at valve body 1 and valve seat 4, be disposed with sealing gasket 14 between valve gap 2 and the valve seat 4, pressure ring 13 and butterfly spring b12, form effective seal, the upper end of valve ball 3 is connected with an end of valve rod 5, fixedly connected with valve body 1 with butterfly spring a11 by nut a10 in the intermediate portion of valve rod 5, and by the gland 6 between valve rod 5 and the valve body, filler 8 and wound gasket b9 form sealing, the afterbody of valve rod 5 is with driving casing 16, support 15 is fixedlyed connected by screw 17 with valve body 1, and drive unit is connected with 5 of valve rods by support 15, by above-mentioned support is set, can prevent that valve rod 5 from flying out, and ensures safety in production in the process of work.
Adopt the supersonic spray coating technology, be coated with Tungsten carbite or chromium carbide hardened material or cemented carbide on the surface of above-mentioned valve seat 4 and valve ball 3, make the fine and close combination of valve seat and valve ball, and its surface hardness is reached more than the HRC65, have good rub resistance, performance such as shock-resistant.
The material of above-mentioned sealing gasket 14 is graphite packing, and its shaped design is become V-type, realizes good sealing, and this kind structure reduces ball valve moment of torsion when opening or closing.
Working procedure is as follows: during proper functioning, metal hard-sealing ball valve is installed in the middle of the system pipeline, MEDIA FLOW is through the through hole of valve ball 3, and drive unit acts on the valve rod 1, and valve rod 1 rotates, it drives valve ball 3 and rotates together, rotate 90 °, realize the opening and closing of valve, when the valve expanded by heating, under the effect of valve seat 4 and butterfly spring b12, can absorb distortion, prevent that valve ball 3 is stuck.
Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technological scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.
Claims (6)
1. metal hard-sealing ball valve, comprise valve body (1), valve gap (2), valve ball (3), valve seat (4), valve rod (5), support (15) and drive unit, valve body (1) and valve gap (2) are connected to form a cavity, the valve ball (3) that is provided with through hole is positioned at cavity, the upper end of valve ball (3) links to each other with valve rod (5), the both sides of valve ball (3) are respectively arranged with valve seat (4), support (15) is fixedlyed connected with valve body (1) by screw, and drive unit is connected with valve rod (5) axle by support (15), it is characterized in that: described valve seat (4) is a metallic material, at valve body (1) and valve seat (4), be disposed with sealing gasket (14) between valve gap (2) and the valve seat (4), pressure ring (13) and butterfly spring (12).
2. metal hard-sealing ball valve according to claim 1 is characterized in that the surface of described valve seat (4) and valve ball (3) all is coated with hardened material.
3. metal hard-sealing ball valve according to claim 2 is characterized in that described hardened material is a cemented carbide.
4. metal hard-sealing ball valve according to claim 2 is characterized in that described hardened material is Tungsten carbite or chromium carbide.
5. metal hard-sealing ball valve according to claim 1, the material that it is characterized in that described sealing gasket (14) is graphite packing.
6. metal hard-sealing ball valve according to claim 5 is characterized in that described graphite packing is a V-structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200428466U CN201547300U (en) | 2009-06-26 | 2009-06-26 | Metal hard-seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200428466U CN201547300U (en) | 2009-06-26 | 2009-06-26 | Metal hard-seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547300U true CN201547300U (en) | 2010-08-11 |
Family
ID=42602473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200428466U Expired - Lifetime CN201547300U (en) | 2009-06-26 | 2009-06-26 | Metal hard-seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547300U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373624A (en) * | 2014-10-20 | 2015-02-25 | 圣博莱阀门有限公司 | Ultrahigh temperature wear-resistant ball valve |
| CN106870754A (en) * | 2015-12-14 | 2017-06-20 | 肖静宇 | All-metal ball valve |
| CN108953660A (en) * | 2018-08-30 | 2018-12-07 | 昆山维萨阀门有限公司 | A kind of Bidirectional hard seal floating ball valve |
-
2009
- 2009-06-26 CN CN2009200428466U patent/CN201547300U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373624A (en) * | 2014-10-20 | 2015-02-25 | 圣博莱阀门有限公司 | Ultrahigh temperature wear-resistant ball valve |
| CN106870754A (en) * | 2015-12-14 | 2017-06-20 | 肖静宇 | All-metal ball valve |
| CN108953660A (en) * | 2018-08-30 | 2018-12-07 | 昆山维萨阀门有限公司 | A kind of Bidirectional hard seal floating ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |