CN203560514U - Four-way hard-sealing ball valve - Google Patents
Four-way hard-sealing ball valve Download PDFInfo
- Publication number
- CN203560514U CN203560514U CN201320743783.3U CN201320743783U CN203560514U CN 203560514 U CN203560514 U CN 203560514U CN 201320743783 U CN201320743783 U CN 201320743783U CN 203560514 U CN203560514 U CN 203560514U
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- China
- Prior art keywords
- valve
- valve body
- seal
- ball valve
- hard seal
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- Expired - Fee Related
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Abstract
The utility model discloses a four-way hard-sealing ball valve, and belongs to the technical field of ball valves. The four-way hard-sealing ball valve is characterized in that the four-way hard-sealing ball valve comprises a valve body, a ball body arranged in the valve body, a valve rod connected with the ball body, four end covers arranged on the external wall of the valve body and a pressing cover arranged at the upper end of the valve body and the periphery of the valve rod; through holes are formed in the end covers, wherein installation grooves are formed in the end faces of the four end covers opposite to the ball body in the circumferential direction; a hard-sealing valve base opposite to the ball body is arranged in each installation grooves; a belleville spring and a thrust ring are sequentially arranged in each installation grooves on the rear side of the hard-sealing valve base from inside to outside. The four-way hard-sealing ball valve is compact in structure, high in temperature resistance, corrosion resistance and wear resistance, reliable in use, and long in service life. The four-way hard-sealing ball valve is mainly used for medium flow control under the environment of high temperature, strong corrosion and high abrasion.
Description
Technical field
The utility model relates to a kind of ball valve, more particularly, relates in particular to a kind of four-way hard seal ball valve.
Background technique
Four way ball valve is generally the soft sealing ball valve of PTFE tetrafluoroethylene Sealing, and serviceability temperature is-30 °～180 °, is applicable to liquid, gas, water, the corresponding work condition state of wet goods.In the medium of the higher hardness such as particle, powder, very easily wash away, corrode, affect sealing effect, reduce working life, there is certain narrow limitation.In recent years, due to the develop rapidly of all trades and professions, the scope that four way ball valve is used is constantly expanded, and has proposed new requirement.Be mainly high temperature resistant, corrosion-resistant, wear-resistant, increase the service life, the new expectation that synergy reduces costs.
Model utility content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provide a kind of compact structure, high temperature resistant, corrosion-resistant, wear-resistant, use four-way hard seal ball valve reliable, that the life-span is long.
The technical solution of the utility model is achieved in that a kind of four-way hard seal ball valve, comprise valve body, be arranged on the spheroid in valve body, the valve rod that connects spheroid, the gland that is arranged on four end caps on valve outer wall and is arranged on the valve body upper end of valve rod periphery, on end cap, be provided with through hole, wherein on four end caps end face relative with spheroid along being circumferentially with mounting groove, in mounting groove, be provided with the hard seal valve seat corresponding with spheroid, in the mounting groove of hard seal valve seat rear side, be sequentially provided with from the inside to the outside butterfly spring and Thrust ring.
In above-mentioned a kind of four-way hard seal ball valve, between described hard seal valve seat and the two ends of Thrust ring contacting part and mounting groove, be formed with seal groove, in seal groove, be respectively equipped with the first flexible graphite gasket.
In above-mentioned a kind of four-way hard seal ball valve, each end cap is provided with the positioning convex ring corresponding with valve body, is provided with the second flexible graphite gasket between positioning convex ring and valve body.
In above-mentioned a kind of four-way hard seal ball valve, the described described positioning convex ring end face relative with valve body is provided with annular seal boss, described valve body is provided with the seal gap corresponding with seal boss, and described the second flexible graphite gasket is arranged between seal boss and seal gap.
In above-mentioned a kind of four-way hard seal ball valve, described valve body is provided with the annular mounting groove adapting with gland, is provided with the 3rd flexible graphite gasket in the annular mounting groove between valve body and gland.
In above-mentioned a kind of four-way hard seal ball valve, described valve body bottom is provided with bottom, one-body molded on the bottom end face relative with valve body have a ring packing boss, on valve body, be provided with the ring packing groove adapting with seal boss, in the ring packing groove between ring packing boss and valve body, be provided with the 4th flexible graphite gasket.
In above-mentioned a kind of four-way hard seal ball valve, the sealing position built-up welding of described hard seal valve seat and spheroid has high hardness alloy layer.
The utility model adopts after said structure, the sealing configuration consisting of hard seal valve seat, Thrust ring, flexible graphite gasket and butterfly spring is set between end cap and spheroid, when spheroid stressed large or while there is pressure anomaly, by butterfly spring, can play buffer function, both guaranteed sealing, prevented again that sealing surface was scratched and affects working life.Flexible graphite gasket plays radial seal effect, and prevents that medium from entering butterfly spring space, affects elastic effect.Meanwhile, between valve body and bottom, between valve body and gland and be equipped with flexible graphite gasket between valve body and end cap, further strengthen the usability of the utility model ball valve, product is used more stable.
Accompanying drawing explanation
Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but do not form 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, bottom 1a, spheroid 2, valve rod 3, end cap 4, positioning convex ring 4a, seal boss 4b, gland 5, hard seal valve seat 6, butterfly spring 7, Thrust ring 8, the first flexible graphite gasket 9, the second flexible graphite gasket 10, the 3rd flexible graphite gasket 11, the 4th flexible graphite gasket 12.
Embodiment
Consult shown in Fig. 1 to Fig. 5, a kind of four-way hard seal ball valve of the present utility model, comprise valve body 1, be arranged on the spheroid 2 in valve body 1, the valve rod 3 that connects spheroid 2, the gland 5 that is arranged on four end caps 4 on valve body 1 outer wall and is arranged on valve body 1 upper end of valve rod 3 peripheries, on end cap 4, be provided with through hole, on four end caps 4 end face relative with spheroid 2 along being circumferentially with mounting groove, in mounting groove, be provided with the hard seal valve seat 6 corresponding with spheroid 2, hard seal valve seat 6 has high hardness alloy layer with the sealing position built-up welding of spheroid 2, alloy can adopt as stellite, nickel-base alloy, spherome surface spraying high-hardness tungsten carbide alloy, respectively through fine grinding, grind, sealing surface Percent of contact area is high.More than hardness HRC >=50, tool has good wearability.
In the mounting groove of hard seal valve seat 6 rear sides, be sequentially provided with from the inside to the outside butterfly spring 7 and Thrust ring 8.Meanwhile, between the two ends of hard seal valve seat 6 and Thrust ring 8 contacting parts and mounting groove, be formed with seal groove, in seal groove, be respectively equipped with the first flexible graphite gasket 9.This structure, by flexible sealing mechanism, when spheroid 2 is stressed large or occur that pressure anomaly increases, when sealing surface frictional force increases, plays buffer function by butterfly spring 7, has both guaranteed sealing, has prevented that again sealing surface is scratched and affects working life.First flexible graphite gasket 7 at two ends plays radial seal effect, and prevents that medium from entering butterfly spring 7 spaces, affects elastic effect.
Meanwhile, each end cap 4 is provided with the positioning convex ring 4a corresponding with valve body 1, is provided with the second flexible graphite gasket 10 between positioning convex ring 4a and valve body 1; And, on the positioning convex ring 4a end face relative with valve body 1, being provided with annular seal boss 4b, described valve body 1 is provided with the seal gap corresponding with seal boss 4b, and described the second flexible graphite gasket 10 is arranged between seal boss 4b and seal gap.This structure, first, by the second flexible graphite gasket 10 sealings of end face, heatproof more than 400 °, coordinates by seal boss 4b and seal gap the area of contact that increases involutory surface simultaneously, increases stability.In ball body of valve rotary course, vibrate little, relatively wriggle littlely, guarantee that complete machine running stress equalization is steady.
In addition, be provided with the annular mounting groove adapting with gland 5 on valve body 1, be provided with the 3rd flexible graphite gasket 11 in the annular mounting groove between valve body 1 and gland 5, this structure makes valve body under high temperature condition, still have good sealing.
Further, in valve body 1 bottom, be provided with bottom 1a, one-body molded on the bottom 1a end face relative with valve body 1 have a ring packing boss, on valve body 1, be provided with the ring packing groove adapting with seal boss, in the ring packing groove between ring packing boss and valve body 1, be provided with the 4th flexible graphite gasket 12.This structure, when employing graphite pads is slept sealing, the supporting surface contacting with bottom 1a by increasing valve body 1, improves stability, and the inside in the using process of elimination valve is stationarity not, raising using effect.
Above illustrated embodiment is better embodiment of the present utility model, only be used for facilitating explanation the utility model, not the utility model is done to any pro forma restriction, under any, in technical field, have and conventionally know the knowledgeable, if within not departing from the scope of technical characteristics that the utility model is put forward, utilize technology contents that the utility model discloses to do the local equivalent embodiment who changes or modify, and do not depart from technical characteristics content of the present utility model, all still belong in the scope of the utility model technical characteristics.
Claims (7)
1. a four-way hard seal ball valve, comprise valve body (1), be arranged on the spheroid (2) in valve body (1), the valve rod (3) that connects spheroid (2), the gland (5) that is arranged on four end caps (4) on valve body (1) outer wall and is arranged on peripheral valve body (1) upper end of valve rod (3), on end cap (4), be provided with through hole, it is characterized in that, on four end caps (4) end face relative with spheroid (2), edge is circumferentially with mounting groove, in mounting groove, be provided with the hard seal valve seat (6) corresponding with spheroid (2), in the mounting groove of hard seal valve seat (6) rear side, be sequentially provided with from the inside to the outside butterfly spring (7) and Thrust ring (8).
2. a kind of four-way hard seal ball valve according to claim 1, it is characterized in that, between the two ends of described hard seal valve seat (6) and Thrust ring (8) contacting part and mounting groove, be formed with seal groove, in seal groove, be respectively equipped with the first flexible graphite gasket (9).
3. a kind of four-way hard seal ball valve according to claim 1, it is characterized in that, each end cap (4) is provided with the positioning convex ring (4a) corresponding with valve body (1), between positioning convex ring (4a) and valve body (1), is provided with the second flexible graphite gasket (10).
4. a kind of four-way hard seal ball valve according to claim 3, it is characterized in that, the end face that described described positioning convex ring (4a) is relative with valve body (1) is provided with annular seal boss (4b), described valve body (1) is provided with the seal gap corresponding with seal boss (4b), and described the second flexible graphite gasket (10) is arranged between seal boss (4b) and seal gap.
5. a kind of four-way hard seal ball valve according to claim 1, it is characterized in that, described valve body (1) is provided with the annular mounting groove adapting with gland (5), is provided with the 3rd flexible graphite gasket (11) in the annular mounting groove between valve body (1) and gland (5).
6. a kind of four-way hard seal ball valve according to claim 1, it is characterized in that, described valve body (1) bottom is provided with bottom (1a), one-body molded on bottom (1a) end face relative with valve body (1) have a ring packing boss, on valve body (1), be provided with the ring packing groove adapting with seal boss, in the ring packing groove between ring packing boss and valve body (1), be provided with the 4th flexible graphite gasket (12).
7. a kind of four-way hard seal ball valve according to claim 1, is characterized in that, described hard seal valve seat (6) has high hardness alloy layer with the sealing position built-up welding of spheroid (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743783.3U CN203560514U (en) | 2013-11-22 | 2013-11-22 | Four-way hard-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743783.3U CN203560514U (en) | 2013-11-22 | 2013-11-22 | Four-way hard-sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560514U true CN203560514U (en) | 2014-04-23 |
Family
ID=50510235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320743783.3U Expired - Fee Related CN203560514U (en) | 2013-11-22 | 2013-11-22 | Four-way hard-sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560514U (en) |
Cited By (1)
| 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 |
-
2013
- 2013-11-22 CN CN201320743783.3U patent/CN203560514U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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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: 20140423 Termination date: 20151122 |