CN201902596U - Hard sealed ball valve with good sealing performance - Google Patents
Hard sealed ball valve with good sealing performance Download PDFInfo
- Publication number
- CN201902596U CN201902596U CN2010206947394U CN201020694739U CN201902596U CN 201902596 U CN201902596 U CN 201902596U CN 2010206947394 U CN2010206947394 U CN 2010206947394U CN 201020694739 U CN201020694739 U CN 201020694739U CN 201902596 U CN201902596 U CN 201902596U
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- valve
- valve seat
- ring
- spheroid
- ball
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Abstract
The utility model discloses a hard sealed ball valve with good sealing performance, which comprises a valve body and a transmission mechanism thereof, wherein a ball body, a valve seat and a locating ring are arranged in the valve body; the ball body is connected with a valve rod; the valve rod is connected with the transmission mechanism outside the valve body. The hard sealed ball valve is characterized in that a sealing surface where the valve seat is in contact with the ball body is designed into a trapezoidal ring surface, and has a good seal-cleaning function on solid particles adhering to the ball body, so as to guarantee the good sealing between the ball body and the valve seat; a graphite sealing ring is arranged between end surfaces where the locating ring is in contact with the valve seat, so that the technical requirements of fire prevention and high temperature resistance are met; and the solid particles can be avoided from entering gaps between the valve seat, a left body, a right body, the ball body and a middle body, thereby guaranteeing good sealing effect. Thus, the hard sealed ball valve provided by the utility model has good sealing performance, erosion resistance, high temperature resistance, wear resistance, simplification of opening and closing and long service life.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, relate in particular to a kind of hard seal ball valve of corrosion-resistant, high temperature resistant, wear-resistant, favorable sealing property, be mainly used in the PTA(Pure Terephthalic Acid of bromine ion-containing and terephthalic acid solid particle) in the device.
Background technique
In the prior art, at the PTA(Pure Terephthalic of bromine ion-containing and terephthalic acid solid particle Acid) ball valve that uses in the device, under the effect of severe corrosive and high-temperature solid particle medium, corrosion resistance is relatively poor, easy to wear, have influence on the sealability of ball valve, shortened the working life of valve.
The model utility content
In order to overcome above-mentioned problems of the prior art, the purpose of this utility model provides a kind of hard seal ball valve of favorable sealing property, is difficult for erosion corrosion, can keep excellent sealing performance, prolongs the working life of valve.
The purpose of this utility model realizes by taking following technological scheme:
A kind of hard seal ball valve of favorable sealing property, comprise valve body and driving mechanism thereof, be provided with spheroid, valve seat and positioning ring in the valve body, spheroid is connected with valve rod, valve rod is connected with valve body driving mechanism outward, and it is characterized in that: the contacted sealing surface of described valve seat and spheroid is a trapezoidal anchor ring; Be provided with carbon seal ring between described positioning ring and valve seat opposing end faces.
Described carbon seal ring selects for use a kind of wedge-type to have wire moulding Expanded graphite seal ring.
Described valve seat is selected the splendid Ha Shi C nickel-base alloy UNS N10276 of Ni-Cr-Mo decay resistance for use.
Described spheroid is selected the high English Cornell nickel-base alloy Inconel 718 of precipitation hardening Ni-Cr-Fe corrosion resistance and good, intensity and hardness for use.
The hard seal ball valve of the above-mentioned favorable sealing property that the utility model provides, because valve seat and the contacted sealing surface of spheroid are designed to a trapezoidal anchor ring, the solid particle that sticks on the spheroid there is good self clean-up action, thereby has guaranteed the excellent sealing between spheroid and the valve seat; Owing between positioning ring and the contacted end face of valve seat, be provided with carbon seal ring, can satisfy resistant to elevated temperatures technical requirements, can play preventing that solid particle from entering in the gap of valve seat, left and right sides body, spheroid and middle body, can ensure good sealing effect again.In addition, because carbon seal ring special substance and structure Design, and the selection of valve seat, spheroid material suitable stiffness difference, make this ball valve have excellent sealing performance, corrosion-resistant, high temperature resistant, wear-resistant, open and close easily long service life.
Description of drawings
Fig. 1 is the structural representation of the utility model hard seal ball valve;
Fig. 2 is a P partial enlarged drawing among Fig. 1;
Among the figure: 1-left and right sides body, body among the 2-, 3-bottom, 4-first seal ring, 5-carbon seal ring, 6-positioning ring, 7-second seal ring, 8-valve seat, 9-spheroid, 10-valve rod, 11-preloading spring, 12-top cover, 13-driving mechanism.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further elaborated.
As depicted in figs. 1 and 2, among the hard seal ball valve embodiment of the favorable sealing property that the utility model provides, comprise valve body and driving mechanism 13 thereof, valve body comprises left and right sides body 1, middle body 2, bottom 3 and top cover 12, installing and locating ring 6 and valve seat 8 in the valve seat orifice of left and right sides body 1 opposing end surface that is arranged side by side, two valve seats 8 are the symmetry center setting with valve rod 10 axle center, two valve seats 8 are embedded in spheroid 9, left and right sides body 1 is to be connected with bolt with middle body 3, adopt the sealing of metal wound gasket, spheroid 9 is connected with valve rod 10, and valve rod 10 is connected with valve body driving mechanism 13 outward.Wherein:
Described valve seat 8 is a trapezoidal anchor ring with spheroid 9 contacted sealing surfaces, the solid particle that sticks on the spheroid 9 is had good self clean-up action, thereby guaranteed the excellent sealing between valve seat 8 and the spheroid 9.Be metal-seated between valve seat 8 and the spheroid 9, the material of valve seat 8 is selected the splendid Ha Shi C nickel-base alloy UNS N10276 of Ni-Cr-Mo decay resistance for use, it contains extremely low carbon and silicon, has good anti-corrosion, can prolong the working life of valve effectively.The material of spheroid 9 is selected the high English Cornell nickel-base alloy Inconel 718 of precipitation hardening Ni-Cr-Fe corrosion resistance and good, intensity and hardness for use.
The inner hole wall of described left and right sides body 1 and the external diameter of valve seat 8, be respectively equipped with first seal ring 4 between the external diameter of positioning ring 6, second seal ring 7, first seal ring 4, second seal ring 7 is the O RunddichtringO, also be provided with carbon seal ring 5 between positioning ring 6 and valve seat 8 opposing end faces, carbon seal ring 5 selects for use a kind of wedge-type to have wire moulding Expanded graphite seal ring, left and right sides body 1 is provided with preloading spring 11 with positioning ring 6 opposing end faces, positioning ring 6 is under the effect of preloading spring 11, carbon seal ring 5 extruding are close on the valve seat 8, the double sealing structure of O RunddichtringO+carbon seal ring and the setting of preloading spring, constitute the floating valve seat of favorable sealing property, made the valve seat 8 and the valve seat orifice of left and right sides body 1 form relation movingly.Above-mentioned carbon seal ring 5 can be played the frpf effect, when the O RunddichtringO is burnt in the time of playing again in temperature 〉=180 ℃, plays the effect of seal valve seat 8 and valve body under the extruding of preloading spring 11 and positioning ring 6.And first seal ring 4 that is provided with on the external diameter of valve seat 8, make valve seat 8 have piston effect, under preloading spring 11 pretightening force effects, make both sides valve seat 8 embrace spheroid 9 tightly from both sides and play seal action, reach import, the two-way and low pressure of outlet, all sealable effect of high pressure, and can accomplish zero leakage.
Above-described only is preferred embodiment of the present utility model.Should be understood that those of ordinary skill, under technology enlightenment provided by the utility model, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model for valve technology field.
Claims (4)
1. the hard seal ball valve of a favorable sealing property, comprise valve body and driving mechanism thereof, be provided with spheroid, valve seat and positioning ring in the valve body, spheroid is connected with valve rod, valve rod is connected with valve body driving mechanism outward, and it is characterized in that: the contacted sealing surface of described valve seat and spheroid is a trapezoidal anchor ring; Be provided with carbon seal ring between described positioning ring and valve seat opposing end faces.
2. hard seal ball valve according to claim 1 is characterized in that: described carbon seal ring selects for use a kind of wedge-type to have wire moulding Expanded graphite seal ring.
3. hard seal ball valve according to claim 1 and 2 is characterized in that: described valve seat is selected the splendid Ha Shi C nickel-base alloy UNS N10276 of Ni-Cr-Mo decay resistance for use.
4. hard seal ball valve according to claim 1 and 2 is characterized in that: described spheroid is selected the high English Cornell nickel-base alloy Inconel 718 of precipitation hardening Ni-Cr-Fe corrosion resistance and good, intensity and hardness for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206947394U CN201902596U (en) | 2010-12-31 | 2010-12-31 | Hard sealed ball valve with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206947394U CN201902596U (en) | 2010-12-31 | 2010-12-31 | Hard sealed ball valve with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902596U true CN201902596U (en) | 2011-07-20 |
Family
ID=44273190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206947394U Expired - Fee Related CN201902596U (en) | 2010-12-31 | 2010-12-31 | Hard sealed ball valve with good sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902596U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748496A (en) * | 2012-07-18 | 2012-10-24 | 嘉士凯（苏州）阀门配件有限公司 | Fireproofing ball valve |
| CN106984013A (en) * | 2017-04-18 | 2017-07-28 | 李桂兰 | Ball machine is closed in table tennis supercharging |
-
2010
- 2010-12-31 CN CN2010206947394U patent/CN201902596U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748496A (en) * | 2012-07-18 | 2012-10-24 | 嘉士凯（苏州）阀门配件有限公司 | Fireproofing ball valve |
| CN106984013A (en) * | 2017-04-18 | 2017-07-28 | 李桂兰 | Ball machine is closed in table tennis supercharging |
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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: 20110720 Termination date: 20171231 |