CN102359617A - Exquisite fire-proof ball valve - Google Patents
Exquisite fire-proof ball valve Download PDFInfo
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- CN102359617A CN102359617A CN201110330666XA CN201110330666A CN102359617A CN 102359617 A CN102359617 A CN 102359617A CN 201110330666X A CN201110330666X A CN 201110330666XA CN 201110330666 A CN201110330666 A CN 201110330666A CN 102359617 A CN102359617 A CN 102359617A
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- valve
- ball valve
- fire prevention
- valve body
- fire
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Abstract
The invention discloses an exquisite fire-proof ball valve, which comprises a valve body, a valve bonnet, a ball, a valve seat and a sealing gasket. The valve seat is located in annular grooves of the valve body and the valve bonnet, so that a flexible sealing structure is formed. The exquisite fire-proof ball valve has the advantages that the total cavity of the valve body is diminished while compression strength is increased after the exquisite fire-proof ball valve is improved, raw materials are greatly saved, and accordingly, the fire-proof ball valve is more exquisite and compact.
Description
Technical field
The present invention relates to a kind of fire prevention ball valve, particularly a kind of can mainly being common to the need fire prevention and not needing frpf various pipes engineering field at the fire prevention ball valve on the direction of the big footpath of valve seat.
Background technique
The fire prevention ball valve of producing in the market all is the FW (or being the fire prevention shoulder) that increases certain width at valve latus rectum place; Such result will make the external diameter of spheroid than the frpf ball valve is not big; So the fire prevention ball valve generally is independent manufacturing, but the producer that also has considers cost, fire prevention and frpf ball valve are not made general valve body and valve gap; When needs are prevented fires, the valve seat tank car is become FW; In the time need not preventing fires, the fire prevention of valve seat tank car Cheng Ping do not had the structure of FW, both of these case is all wanted turning, thereby causes waste of raw materials and increase processing charges.Fire prevention is not wanted the general just necessary major diameter spheroid that adopts with not preventing fires in addition, causes entire product huge so again, and raw material are used manyly; The entire product cost increases, moreover spheroid external diameter and valve block internal diameter excesssive gap, and the sealed width of sealing gasket is excessive; The width of sealing shoulder is excessive; The central diameter that the lumen flange is fixed is excessive, and the size of lumen flange, and these weight that all influence entire product increase.The fire prevention shoulder bevel was near stimulating the menstrual flow in the past, and was as shown in Figure 1, and this FW exists some not enough, the one, and sealing area is little, and the thrust of medium is just inevitable little, and it is poor to seal when just big than large size thrust reliability.The 2nd, this FW is thiner, and intensity is not fine, and is also yielding if Thickness Design gets when not being fine, the influence sealing.The 3rd, process this grooved FW, not only bother but also lose time and waste material.
Summary of the invention
The invention provides a kind of precision fire prevention ball valve, this ball valve has not only reduced the waste of material and processing, improves fireproof performance, also do not reduce that Ball valve stimulates the menstrual flow and the situation of standard wall under can be bigger the raw-material waste of reduction.
For solving above technical problem and economic problems, the technological scheme that the present invention takes: precision fire prevention ball valve, comprise valve body, valve gap, spheroid, valve seat, sealing gasket, said valve seat is positioned within the annular groove of valve body and valve gap, forms soft sealing structure.
Furtherly, sealing chamfering in valve body or valve gap and spheroid contact position are provided with.
The gap of the internal diameter of valve body and the external diameter of spheroid is between 1.5～3.5mm.
The sealed width of sealing gasket is between 2～4mm.
The sealing shoulder of valve body is between 1.5～3.5mm.
The diameter in the middle flange fixed center hole of valve body or valve gap is than the big 1～2MM of external diameter of land widths.
The middle flange four directions of valve body or valve gap is of a size of and behind nut screwing clamping, is positioned at tetragonal body.
Beneficial effect of the present invention: all diminished through the whole body cavity of the valve body after the above improvement, compressive strength has but increased, and raw material have greatly been practiced thrift, and relatively more exquisite compact.
Description of drawings
Below in conjunction with accompanying drawing the present invention is carried out detailed explanation:
Fig. 1 is the fire resisting construction partial view of the protection ball valve of existing technology.
Fig. 2 is the sectional view of interior fire resisting construction of the present invention and each relevant physical dimension.
Embodiment
Fig. 2 is a kind of precision fire prevention of the present invention ball valve.Constitute by valve body 1, valve gap 2, spheroid 3, valve seat 4, sealing gasket 5 etc.Said valve seat 4 is positioned within the annular groove 41 of valve body 1 and valve gap 2, forms soft sealing structure.When the breaking out of fire of valve lower end, this soft seal valve seat 4 is just burnt out by big fire, burns bigger and bigger in order not make fire; Just must cut off the fuel feeding channel at the ball valve upper reaches; Here, spheroid 3 is to lean on the spheroid 3 and the interior sealing chamfering 11 or 21 of valve body 1 or valve gap 2 are contacted, and forms the sealing of metal to metal; Just be not afraid of big fire yet and burn out sealing surface, play reliably anti-fire action.Adopt this novel fire resisting construction not only simply but also practical; Above three shortcomings have just been overcome; Adopt this precision fire resisting construction for the precision casting ball valve that stimulates the menstrual flow between DN15～DN150, the external diameter of its spheroid 3 is than the little 3～6mm of former spheroid, and stimulating the menstrual flow for a short time, getting the small value stimulates the menstrual flow greatly gets big value.Get between 1.5～3.5mm in the gap of the internal diameter 2-of valve body 1 and the external diameter of spheroid 3.The sealed width 51 of sealing gasket 5 is controlled between 2～4mm.Sealing shoulder 13 is controlled between 1.5～3.5mm.The diameter in middle flange fixed center hole 14 is controlled at the big 1～2MM of external diameter than land widths 13.After will being controlled at nut screwing clamping, the size in middle flange four directions 15 do not stretch out outside the tetragonal body.These sizes of improving design can both guarantee to seal the requirement with intensity.Through above improvement, whole ball valve is because spheroid is little, and valve body is little, and fixed center is little etc., and the result greatly reduces weight, has practiced thrift raw material in a large number guaranteeing not damage under the prerequisite of product performance, and has produced compact more exquisite.And this kind ball valve do not increasing under cost and the situation, can with do not require that the frpf ball valve is general, real become a kind of ball valve of using more.
Described valve body and valve gap are provided with the fire prevention shoulder at place, the big footpath of valve seat; The place, big footpath that only needs dress valve seat in valve body and valve gap is the chamfering that matches of ability and spheroid, and after the soft valve seat of big torch burnt out, medium was just the ball chamfering; Play the effect of metallic seal; Such FW is more much higher than former FW intensity, and processing extremely simple, save money, it is just passable only to need in processing valve seat groove, to fall an angle.When needs were prevented fires, the size and the angle of chamfering were done by designing requirement, and in the time need not preventing fires, but the chamfering car more greatly, so also not waste material and increase processing charges.Adopt so interior fire resisting construction, sphere diameter can be than the little 3～6MM of place where troops were originally stationed fireball, and because chamfering place sealed diameter is big, the sealing load of generation is just big, so the frpf sealing effect is more far better than original structure.In addition, one of which, being controlled at diametric(al) for the crest clearance at 1/2 " 5 " valve block internal diameter and spheroid of stimulating the menstrual flow is between 1.5～3.5MM; Its two, the sealed width of sealing gasket is controlled between 2～4MM; Its three, the sealing shoulder width is controlled between 1.5～3.5MM; Its four, middle flange fixed center diameter is controlled at than the big 1～2MM of shoulder external diameter; Its five, the size Control in middle flange four directions is not stretched out the four directions at fastening nut edge is for well.
Embodiment should not be regarded as limitation of the present invention, but any improvement of doing based on spirit of the present invention, all should be within protection scope of the present invention.
Claims (7)
1. precision fire prevention ball valve comprises valve body (1), valve gap (2), spheroid (3), valve seat (4), sealing gasket (5), it is characterized in that said valve seat (4) is positioned within the annular groove (41) of valve body (1) and valve gap (2), forms soft sealing structure.
2. precision fire prevention ball valve as claimed in claim 1 is characterized in that, sealing chamfering (11) in valve body (1) or valve gap (2) are provided with spheroid (3) contact position.
3. precision fire prevention ball valve as claimed in claim 1 is characterized in that the gap of the external diameter of the internal diameter of valve body (1) and spheroid (3) is between 1.5～3.5mm.
4. precision fire prevention ball valve as claimed in claim 1 is characterized in that the sealed width (51) of sealing gasket (5) is between 2～4mm.
5. precision fire prevention ball valve as claimed in claim 1 is characterized in that the sealing shoulder (13) of valve body (1) is between 1.5～3.5mm.
6. precision fire prevention ball valve as claimed in claim 5 is characterized in that the diameter in the middle flange fixed center hole (14) of valve body (1) or valve gap (2) is than the big 1～2MM of external diameter of land widths (13).
7. precision fire prevention ball valve as claimed in claim 6 is characterized in that the middle flange four directions (15) of valve body (1) or valve gap (2) is of a size of and behind nut screwing clamping, is positioned at tetragonal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330666XA CN102359617A (en) | 2011-10-27 | 2011-10-27 | Exquisite fire-proof ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330666XA CN102359617A (en) | 2011-10-27 | 2011-10-27 | Exquisite fire-proof ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102359617A true CN102359617A (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110330666XA Pending CN102359617A (en) | 2011-10-27 | 2011-10-27 | Exquisite fire-proof ball valve |
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| CN (1) | CN102359617A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3193248A (en) * | 1961-11-20 | 1965-07-06 | Acf Ind Inc | Ball valve seat construction |
| CN2189244Y (en) * | 1994-03-12 | 1995-02-08 | 永嘉县电子仪器制造厂 | Ball valve |
| CN201539596U (en) * | 2009-04-16 | 2010-08-04 | 江苏苏阀高压阀门有限公司 | Sealing pair for hard sealed ball valve |
| CN101956838A (en) * | 2009-07-17 | 2011-01-26 | 张德飞 | Fireproofing vacuum heat-insulating ball valve |
| CN202302062U (en) * | 2011-10-27 | 2012-07-04 | 浙江万士通阀门有限公司 | Exquisite fireproof ball valve |
-
2011
- 2011-10-27 CN CN201110330666XA patent/CN102359617A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3193248A (en) * | 1961-11-20 | 1965-07-06 | Acf Ind Inc | Ball valve seat construction |
| CN2189244Y (en) * | 1994-03-12 | 1995-02-08 | 永嘉县电子仪器制造厂 | Ball valve |
| CN201539596U (en) * | 2009-04-16 | 2010-08-04 | 江苏苏阀高压阀门有限公司 | Sealing pair for hard sealed ball valve |
| CN101956838A (en) * | 2009-07-17 | 2011-01-26 | 张德飞 | Fireproofing vacuum heat-insulating ball valve |
| CN202302062U (en) * | 2011-10-27 | 2012-07-04 | 浙江万士通阀门有限公司 | Exquisite fireproof ball valve |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |