CN202971994U - Cross metallic seal ball valve - Google Patents
Cross metallic seal ball valve Download PDFInfo
- Publication number
- CN202971994U CN202971994U CN 201220680489 CN201220680489U CN202971994U CN 202971994 U CN202971994 U CN 202971994U CN 201220680489 CN201220680489 CN 201220680489 CN 201220680489 U CN201220680489 U CN 201220680489U CN 202971994 U CN202971994 U CN 202971994U
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- valve
- valve body
- spheroid
- seal ball
- ball valve
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Abstract
The utility model discloses a cross metallic seal ball valve and belongs to the technical field of ball valves. The technical point is that the ball valve comprises a valve body, a sphere is arranged in the valve body; four first through holes are uniformly distributed in the sphere in a circumferential direction; four end covers corresponding to the sphere are uniformly distributed on the valve body in the circumferential direction; second through holes are formed in the end covers and correspond to the first through holes; a valve rod connected with the sphere is arranged on the valve body; positioning grooves are formed in the end covers on the upper side and the lower side of each second through hole; a flexible graphite gasket is arranged in each positioning groove; and valve seats mutually matched with the sphere are embedded in positioning grooves on the outer sides of the ipsilateral flexible graphite gaskets. The utility model aims to provide the cross metallic seal ball valve which is compact in structure, good in sealing performance, resistant to high temperature and friction and is used for controlling a medium flow direction.
Description
Technical field
The utility model relates to a kind of ball valve, more particularly, relates in particular to a kind of four-way metal seal ball valve.
Background technique
Often use four way ball valve in the manufacturing enterprises such as chemical industry, electric power, pharmacy, four way ball valve in the past, valve seat is generally take the PTFE teflon as sealing material, be applicable to the medium operating mode of-40～150 ℃, when temperature is higher, greater than 200 ℃, just be prone to life of valve and shorten, cause situation about can't use.Especially in use occasions such as the powder of high temperature, particle, slurries, media hardness is higher, the abrasion that valve bears, washes away badly, and general sealing configuration can not bear such operating mode.
The model utility content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, and the four-way metal seal ball valve of a kind of compact structure, good airproof performance, high temperature resistant and friction is provided.
The technical solution of the utility model is achieved in that a kind of four-way metal seal ball valve, comprise valve body, be provided with spheroid in valve body, the edge circumferentially is evenly equipped with four the first through holes on spheroid, at valve body along circumferentially being evenly equipped with four end caps corresponding with spheroid, be equipped with the second through hole on described each end cap, described the second through hole is corresponding with the first through hole; Be provided with the valve rod that is connected with spheroid on valve body, be equipped with positioning groove on the end cap of wherein said each both sides, the second through hole up and down, be provided with flexible graphite gasket in positioning groove, be embedded with the valve seat that cooperatively interacts with spheroid in the positioning groove outside the flexible graphite gasket of homonymy.
In above-mentioned four-way metal seal ball valve, described valve rod periphery by down under sequentially be arranged with valve gap, gland and direction board; Described valve gap is connected with valve body screw thread, and described gland and direction board are screwed on valve gap; Be provided with annular breach on the valve gap of valve rod periphery, sequentially be provided with from the bottom to top flexible graphite packing and lining in annular breach, fix by gland outside described lining.
In above-mentioned four-way metal seal ball valve, be circumferentially with the first Expanded graphite packing ring along end cap between the contacting part of described valve body and end cap.
In above-mentioned four-way metal seal ball valve, be circumferentially with the second Expanded graphite packing ring along valve gap between the contacting part of described valve body and valve gap.
In above-mentioned four-way metal seal ball valve, described valve rod upper end is connected with handle; Be provided with rotating shaft in spheroid bottom, described rotating shaft medial axis and valve rod medial axis are located along the same line; Described rotating shaft (14) is connected by sliding bearing with valve body.
After the utility model adopts said structure, by at the end cap inwall, positioning groove being set, flexible graphite gasket is set as the spacer of valve seat bottom positioning groove, valve seat part embeds in positioning groove simultaneously, plays protection against erosion, wear-resisting, high temperature resistant, corrosion resistant effect.Simultaneously, utilize the favorable elasticity of flexible graphite gasket, realize sealing effect, the variation of the switch moment that compensates causes realizes the smooth running of valve; Further, in order to guarantee the sealing effect of whole ball valve, be equipped with the sealing configuration that the Expanded graphite material is made between the contacting part of valve body and end cap and valve body and valve gap, thus guarantee ball valve can be at high temperature, media hardness is high, wearing and tearing and washing away under rugged environment works.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment in accompanying drawing, but do not consist of any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the local enlarged diagram at A place in Fig. 1;
Fig. 3 is the local enlarged diagram at B place in Fig. 1;
Fig. 4 is the local enlarged diagram at C place in Fig. 1;
Fig. 5 is the local enlarged diagram at D place in Fig. 1.
In figure: valve body 1, spheroid 2, the first through hole 2a, end cap 3, the second through hole 3a, positioning groove 3b, flexible graphite gasket 3c, valve rod 4, valve seat 5, valve gap 6, gland 7, direction board 8, flexible graphite packing 9, lining 10, the first Expanded graphite packing ring 11, the second Expanded graphite packing ring 12, handle 13, rotating shaft 14, sliding bearing 15.
Embodiment
Consult Fig. 1 to shown in Figure 5, a kind of four-way metal seal ball valve of the present utility model, comprise valve body 1, be provided with spheroid 2 in valve body 1, the edge circumferentially is evenly equipped with four the first through hole 2a on spheroid 2, along circumferentially being evenly equipped with four end caps corresponding with spheroid 23, be equipped with the second through hole 3a on described each end cap 3 on valve body 1, described the second through hole 3a is corresponding with the first through hole 2a; Be provided with the valve rod 4 that is connected with spheroid 2 on valve body 1, valve rod 4 peripheries by down under sequentially be arranged with valve gap 6, gland 7 and direction board 8; Described valve gap 6 is threaded with valve body 1, and described gland 7 and direction board 8 are screwed on valve gap 6; Be provided with annular breach on the valve gap 6 of valve rod 4 peripheries, sequentially be provided with from the bottom to top flexible graphite packing 9 and lining 10 in annular breach, described lining 10 outsides are fixing by gland 7; Be connected with handle 13 in valve rod 4 upper ends; Be provided with rotating shaft 14 in spheroid 2 bottoms, described rotating shaft 14 medial axis and valve rod 4 medial axis are located along the same line; Described rotating shaft 14 is connected by sliding bearing 15 with valve body 1; Be equipped with positioning groove 3b on the end cap 3 of both sides, each second through hole 3a up and down, be provided with flexible graphite gasket 3c in positioning groove 3b, be embedded with the valve seat 5 that cooperatively interacts with spheroid 2 in the positioning groove 3b outside the flexible graphite gasket 3c of homonymy.After spheroid 2 correct grinding in the present embodiment, by user's request, can carry out the surface plasma nitrogenize, the process forms such as hard chromium plating, sprayed wc, surfacing nickel-base alloy, sphere hardness can reach that HRC50～more than 68, wear resistance is good.Corresponding built-up welding stellite, the nickel-base alloy taked of the sealing surface of valve seat 5,, the sprayed wc process form.After valve seat 5 cambered surface finish turnings, correct grinding, to grinding, guarantee that sealing pays the excellent sealing effect after coordinating with spheroid 2 sealing surfaces after correct grinding.
Further, in order to guarantee the sealing of whole ball valve, be circumferentially with the first Expanded graphite packing ring 11 along end cap 3 between the contacting part of valve body 1 and end cap 3; Simultaneously, be circumferentially with the second Expanded graphite packing ring 12 along valve gap 6 between the contacting part of valve body 1 and valve gap 6, this second Expanded graphite packing ring 12 is the wrap style flexible graphite gasket.
Flexible graphite material has 30% high compression rate and 15% good rebound elasticity, can provide sealing to pay and reach the seal pressure of sealing and suitable switch moment.In valve collar connected in star 6, can increase essential seal pressure with butterfly spring or helical spring between valve body 1 and flexible graphite gasket 7 for the valve greater than DN100.
Claims (5)
1. four-way metal seal ball valve, comprise valve body (1), be provided with spheroid (2) in valve body (1), upper along circumferentially being evenly equipped with four the first through holes (2a) at spheroid (2), upper along circumferentially being evenly equipped with four end caps (3) corresponding with spheroid (2) at valve body (1), be equipped with the second through hole (3a) on described each end cap (3), described the second through hole (3a) is corresponding with the first through hole (2a); Be provided with the valve rod (4) that is connected with spheroid (2) on valve body (1), it is characterized in that, be equipped with positioning groove (3b) on the end cap (3) of described each both sides, the second through hole (3a) up and down, be provided with flexible graphite gasket (3c) in positioning groove (3b), be embedded with the valve seat (5) that cooperatively interacts with spheroid (2) in the positioning groove (3b) outside the flexible graphite gasket (3c) of homonymy.
2. four-way metal seal ball valve according to claim 1, is characterized in that, described valve rod (4) peripheral by down under sequentially be arranged with valve gap (6), gland (7) and direction board (8); Described valve gap (6) is threaded with valve body (1), and described gland (7) and direction board (8) are screwed on valve gap (6); Be provided with annular breach on the valve gap (6) of valve rod (4) periphery, sequentially be provided with from the bottom to top flexible graphite packing (9) and lining (10) in annular breach, described lining (10) outside is fixing by gland (7).
3. four-way metal seal ball valve according to claim 1, is characterized in that, is circumferentially with the first Expanded graphite packing ring (11) along end cap (3) between the contacting part of described valve body (1) and end cap (3).
4. four-way metal seal ball valve according to claim 1, is characterized in that, is circumferentially with the second Expanded graphite packing ring (12) along valve gap (6) between the contacting part of described valve body (1) and valve gap (6).
5. four-way metal seal ball valve according to claim 1, is characterized in that, described valve rod (4) upper end is connected with handle (13); Be provided with rotating shaft (14) in spheroid (2) bottom, described rotating shaft (14) medial axis and valve rod (4) medial axis are located along the same line; Described rotating shaft (14) is connected by sliding bearing (15) with valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680489 CN202971994U (en) | 2012-12-10 | 2012-12-10 | Cross metallic seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680489 CN202971994U (en) | 2012-12-10 | 2012-12-10 | Cross metallic seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971994U true CN202971994U (en) | 2013-06-05 |
Family
ID=48513070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220680489 Expired - Fee Related CN202971994U (en) | 2012-12-10 | 2012-12-10 | Cross metallic seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971994U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197090A (en) * | 2014-09-10 | 2014-12-10 | 浙江三花旋转阀有限公司 | Rotary type fluid passage changeover valve |
| CN104197089A (en) * | 2014-09-10 | 2014-12-10 | 浙江三花旋转阀有限公司 | Rotary type fluid passage changeover valve |
| CN104653817A (en) * | 2015-01-22 | 2015-05-27 | 哈尔滨工程大学 | One-inlet three-outlet four-way reversing spherical valve |
| CN104864174A (en) * | 2015-05-22 | 2015-08-26 | 上海平安高压调节阀门有限公司 | Build up welding structure of ultra-supercritical generator set steam valve sealing face |
-
2012
- 2012-12-10 CN CN 201220680489 patent/CN202971994U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197090A (en) * | 2014-09-10 | 2014-12-10 | 浙江三花旋转阀有限公司 | Rotary type fluid passage changeover valve |
| CN104197089A (en) * | 2014-09-10 | 2014-12-10 | 浙江三花旋转阀有限公司 | Rotary type fluid passage changeover valve |
| CN104653817A (en) * | 2015-01-22 | 2015-05-27 | 哈尔滨工程大学 | One-inlet three-outlet four-way reversing spherical valve |
| CN104864174A (en) * | 2015-05-22 | 2015-08-26 | 上海平安高压调节阀门有限公司 | Build up welding structure of ultra-supercritical generator set steam valve sealing face |
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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 |
Granted publication date: 20130605 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |