CN1629524A - Symmetrical butterfly valve adapted to ceramics or metal or engineering plastics manufacture - Google Patents
Symmetrical butterfly valve adapted to ceramics or metal or engineering plastics manufacture Download PDFInfo
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- CN1629524A CN1629524A CN 200310109382 CN200310109382A CN1629524A CN 1629524 A CN1629524 A CN 1629524A CN 200310109382 CN200310109382 CN 200310109382 CN 200310109382 A CN200310109382 A CN 200310109382A CN 1629524 A CN1629524 A CN 1629524A
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- Prior art keywords
- valve
- butterfly plate
- valve rod
- opening
- valve body
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- 229920006351 engineering plastic Polymers 0.000 title claims abstract description 10
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000000919 ceramic Substances 0.000 title abstract 2
- 238000007789 sealing Methods 0.000 claims description 49
- 238000012856 packing Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000007779 soft material Substances 0.000 description 3
- 241000397426 Centroberyx lineatus Species 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
This invention relates to a ceramic or metal or engineering plastics symmetry valve, wherein, the valve lever drives the seal-filling bar and the disc butterfly plate rotates to make the symmetry valve start. The seal filling bar not only presses the disc butterfly plate and also contacts and seal the filling ring, which prevents the outer leakage of the valve bar filling part and the inner leakage of the ring valve socket due to the valve bar filling hole breaking.
Description
Technical field: the present invention relates to a kind of butterfly valve, particularly the structure of butterfly valve.
Background technique: butterfly valve is the on-off valve that a kind of length is short, keying is fast, simple in structure.Because of valve body upper valve rod hole cuts off ring-shaped valve seats, make cut-off part sealing difficulty, so, the symplex structure butterfly valve generally can only adopt soft valve seat and hard butterfly plate sealing, and upper and lower upper and lower at butterfly plate with valve seat, promptly the valve rod hole cut-off part is provided with the sealing of annular circle platform around valve rod, hard butterfly plate and soft valve seat are compressed mutually on the circle platform, and connected the ring-shaped valve seats sealing that cuts off because of the valve rod hole cut-off part.Though the symplex structure butterfly valve of soft valve base sealing is simple, can not adapt to high temperature media.The butterfly valve of hard valve base sealing, because of being difficult to solve the valve rod hole cut-off part firmly to a hard sealing difficult problem, so, general sealing with butterfly plate and valve seat, the many core shifts that are designed to dodge out valve rod hole add the butterfly valve seal structure of elastic ring, though this structure can adapt to high temperature media, sealability is unreliable, and complex structure, manufacturing difficulty, cost are higher.
Technological scheme: the invention provides and a kind ofly can solve the difficult problem that ring-shaped valve seats is sealed by the valve rod hole cut-off part, and adapt to pottery or metal or engineering plastics etc. are hard, soft material is made symplex structure butterfly valve.
Adapt to the symmetrical butterfly valve that pottery or metal or engineering plastics are made, valve seat in the valve body opening and butterfly plate are formed the sealing pair that cuts off the medium circulation, and butterfly plate is connected with valve rod, and rotates synchronously with valve rod.The vertical installation of opening of valve rod and valve body and valve seat also is equipped with stuffing box packing on valve rod and the valve body, it is characterized in that:
Ring-shaped valve seats is set in the middle of the described valve body opening, this valve seat and pottery or metal or engineering plastics etc. are hard, the valve body of soft material manufacturing is an integral body, work as sealing surface of seat, comprise the butterfly plate sealing surface, when adopting different materials, also be through weldering or plating or be coated with or the processing of technological method such as subsides, make in aggregates with valve seat or butterfly plate.In the middle of the Vertical direction of valve body and ring-shaped valve seats opening, have the cut-out ring-shaped valve seats at upper and lower two places, and penetrate the circular clear opening of valve body.
In described valve body and the ring-shaped valve seats opening, install one " dish type butterfly plate " or " symmetrical butterfly plate ", " symmetrical butterfly plate " is exactly the butterfly plate in the prior art soft sealing butterfly valve.In the circular clear opening in the middle of valve body and ring-shaped valve seats opening Vertical direction, device valve rod and stuffing box packing and rolling type or sliding type plane bearing, at the opening arrangement Gland, drive unit topmost or handle or handwheel drive valve rod, rotate synchronously together with butterfly plate.
Described valve rod adopts tenon groove structure to be connected " dish type butterfly plate " with butterfly plate, adopts the axis hole structure to connect " symmetrical butterfly plate ";
Described " dish type butterfly plate ", upper/lower terminal on its two plane, have the straight trough of symmetry, comprise dove-tail form or T type straight trough, in the middle of the large round end surface of upper valve rod that is connected with the upper and lower straight trough of butterfly plate and lower valve rod, be provided with the flat groove of opening of symmetry, the groove both sides are the semicircle tenon of two symmetries, with the straight trough of tenon insertion " dish type butterfly plate ", realize that promptly tenon groove structure connects.At the flat groove groove of opening tail first indentation sealing filler bar to the gap between " dish type butterfly plate ", the one side of stuffing box packing bar compresses the end face seal at " dish type butterfly plate " straight trough place, another side and stuffing box packing circle also are the place's contact seal of the flat groove groove of opening tail at the step place of the large and small circle of valve rod.Stuffing box packing bar two ends arc circular diameter approximates the interior circular diameter of circular clear opening on stuffing box packing circle cylindrical, the big end cylindrical of valve rod and the valve body.The stuffing box packing bar both rotated synchronously with butterfly plate, valve rod, and justice is compressed by Gland and plane bearing altogether with the stuffing box packing circle, and was adjacent to circle sealing in the circular clear opening on the valve body jointly.The external leakage that had both stoped the stem packing sealing part has stoped the internal leakage that causes because of circular clear opening cut-out ring-shaped valve seats on the valve body again.
Insert valve rod in the hole of described " symmetrical butterfly plate " upper/lower terminal,, realize that the axis hole structure connects with the pin location.Its aperture annular is justified the circular diameter of platform, equals the interior circular diameter of circular clear opening on stuffing box packing circle cylindrical and the valve body.Compressed by Gland and plane bearing, the stuffing box packing circle both compressed the annular circle platform sealing of " symmetrical butterfly plate " aperture, be adjacent to circle sealing in the circular clear opening on the valve body again, the external leakage that both stoped the stem packing sealing part has stoped circular clear opening on the valve body to cut off ring-shaped valve seats again and the internal leakage that causes.
The longitudinal center line of opening on the longitudinal center line of the sealing surface of described valve seat or butterfly plate and the valve body with the longitudinal center line of valve rod, also is the center line of circular clear opening on the valve body, in upper and lower Vertical direction, becomes 90 degree right angle intersections; And the longitudinal center line of the longitudinal center line of the sealing surface of valve seat or butterfly plate and valve body opening in left and right substantially horizontal, becomes greater than 0 degree angle to intersect, and vertical angles are symmetry equivalent.
Described valve seat and butterfly plate sealing surfaces, the method for employing roll extrusion or extruding makes sealing surfaces produce intense plastic strain, the intensity and the corrosion resisting property of sealing surfaces are improved, make sealing surfaces tissue tight, refinement, reach the nanometer scale structure, become the nanostructured sealing surfaces.
Described valve seat and butterfly plate sealing surface can adopt prior art to be designed to elastic sealing structure, and increase cooperation and sealability between the sealing pair.
The drive unit of described symplex structure butterfly valve, not only can adopt outside the drive units such as worm and gear of the prior art or umbrella gear, can also adopt the spur wheel center symmetry speed reducing driving device of valve special use, it is characterized in that: pinion shaft is equipped with in the upper end of valve rod, first order driving gear, pinion shaft central through bore and valve rod upper end cylindrical are done movingly, and around the valve rod rotation.Pinion shaft is given two on the both sides gearwheel with its engagement with transmission of power, first order driven gear, and realize that the first order slows down; Below two gearwheels in both sides, coaxial with it, with speed, homodromal two small gears, second level driving gear, the center gearwheel below pinion shaft again, the engagement of second level driven gear, and realize that the second level slows down; The center hole of this center gearwheel was both coaxial with the valve rod central axis, and device connects mutually on valve rod, rotate synchronously with valve rod again, and the butterfly plate that drive is connected with valve rod does to rotate clockwise or counterclockwise, and realization was closed or the function of Open valve.Can also adopt the method for stack by actual demand, realize the third level, the fourth stage, level V, the 6th grade of deceleration.
Described symplex structure butterfly valve not only is suitable for pipeline folder is connected, and methods such as suitable flange or butt welding or screw thread connect.
Adapt to the symmetrical butterfly valve that pottery or metal or engineering plastics are made, adopt technique scheme, not only adapt to multiple hard, soft material finished parts and sealing surface, and make easily, also reach higher technical parameter easily.Adopt the symplex structure butterfly valve of " dish type butterfly plate ", its flow coefficient is greater than the butterfly valve of prior art.
Description of drawings:
Fig. 1 adopts " dish type butterfly plate " in the technical solution of the present invention, insert cambered surface swallow-tail form straight trough with first circular tenon of valve rod, makes the symplex structure butterfly valve schematic representation that tongue-and-groove connects.
Fig. 2 is to sectional view according to A-A among Fig. 1.
Specific implementation method:
Adopt technical solution of the present invention, design, produce the serial symmetrical butterfly valve of pottery and metal and engineering plastics three class materials, can substitute existing butterfly valve, serial butterfly valve product that again can Dan Lixin.
Claims (5)
1, adapts to the symmetrical butterfly valve that pottery or metal or engineering plastics are made, valve seat in the valve body opening and butterfly plate partner and cut off the sealing pair of medium circulation, butterfly plate is connected with valve rod, and rotate synchronously with valve rod, the vertical installation of opening of valve rod and valve body and valve seat, stuffing box packing also is housed on valve rod and the valve body, it is characterized in that:
Ring-shaped valve seats is set in the middle of A, the described valve body opening, the valve body of this valve seat and pottery or metal or engineering plastics manufacturing is an integral body, valve seat and butterfly plate sealing surface adopt different materials, also be through weldering or plating be coated with or the processing of technological method such as subsides in aggregates, in the middle of the Vertical direction of valve body and ring-shaped valve seats opening, upper and lower two places have the cut-out ring-shaped valve seats, and penetrate the circular clear opening of valve body;
In B, described valve body and the ring-shaped valve seats opening, device " dish type butterfly plate " or " symmetrical butterfly plate ", in the circular clear opening in the middle of the opening Vertical direction, device valve rod, stuffing box packing, rolling type or sliding type plane bearing, Gland is equipped with in the aperture, clamping plane bearing and stuffing box packing, drive unit topmost or handle or handwheel drive valve rod, butterfly plate rotates synchronously, and open and close butterfly valve;
C, described valve rod adopt tenon groove structure to be connected " dish type butterfly plate " with butterfly plate, adopt the axis hole structure to connect " symmetrical butterfly plate ";
Described " dish type butterfly plate ", upper/lower terminal on its two plane, have the straight trough of symmetry, comprise dove-tail form or T type straight trough, in the middle of the large round end surface of upper valve rod that is connected with the upper and lower straight trough of butterfly plate and lower valve rod, be provided with the flat groove of opening of symmetry, the groove both sides are the semicircle tenon of two symmetries, with the straight trough of tenon insertion " dish type butterfly plate ", realize that promptly tenon groove structure connects; At the flat groove groove of opening tail first indentation sealing filler bar to the gap between " dish type butterfly plate ", the one side of stuffing box packing bar compresses the end face seal at " dish type butterfly plate " straight trough place, another side and stuffing box packing circle are big at valve rod, the step place of roundlet, be the place's contact seal of the flat groove groove of opening tail, stuffing box packing bar two ends arc circular diameter equals stuffing box packing circle cylindrical, circular diameter in the circular clear opening on big end cylindrical of valve rod and the valve body, the stuffing box packing bar both with butterfly plate, valve rod rotates synchronously, compressed by Gland and plane bearing with the stuffing box packing circle again, and be adjacent on the valve body circle sealing in the circular clear opening jointly, the external leakage that had both stoped the stem packing sealing part has stoped the internal leakage that causes because of circular clear opening cut-out ring-shaped valve seats on the valve body again;
Insert valve rod in the hole of described " symmetrical butterfly plate " upper/lower terminal,, realize that promptly the axis hole structure connects with the pin location; The diameter of its aperture annular circle platform, equal the interior circular diameter of circular clear opening on stuffing box packing circle cylindrical and the valve body, compressed by Gland and plane bearing, the stuffing box packing circle both compressed the annular circle platform sealing of " symmetrical butterfly plate " aperture, be adjacent to circle sealing in the circular clear opening on the valve body again, the external leakage that had both stoped the stem packing sealing part has stoped the internal leakage that causes because of circular clear opening cut-out ring-shaped valve seats on the valve body again.
2, according to the described symmetrical butterfly valve of claim 1, it is characterized in that: the longitudinal center line of opening on the longitudinal center line of the sealing surface of valve seat or butterfly plate and the valve body, longitudinal center line with valve rod, also be the center line of circular clear opening on the valve body,, become 90 degree right angle intersections in upper and lower Vertical direction; And the longitudinal center line of the longitudinal center line of the sealing surface of valve seat or butterfly plate and valve body opening in left and right substantially horizontal, also becomes greater than 0 degree angle to intersect, and vertical angles are symmetry equivalent.
3, according to claim 1,2 described symmetrical butterfly valves, it is characterized in that: valve seat and butterfly plate sealing surfaces, adopt the method for roll extrusion or extruding, make sealing surfaces produce intense plastic strain, the intensity and the corrosion resisting property of sealing surfaces are improved, make sealing surfaces tissue tight, refinement, reach the nanometer scale structure, become the nanostructured sealing surfaces.
4, according to claim 1,2,3 described symmetrical butterfly valves, it is characterized in that: valve seat and butterfly plate sealing surface, can adopt prior art to be designed to elastic sealing structure, and increase cooperation and sealability between the sealing pair.
5, according to claim 1,2,3,4 described symmetrical butterfly valves, it is characterized in that: drive unit is the spur wheel center symmetry speed reducing driving device of valve special use, pinion shaft is equipped with in upper end at valve rod, first order driving gear, pinion shaft central through bore and valve rod upper end cylindrical is done movingly, and around the valve rod rotation, and pinion shaft is given two on the both sides gearwheel with its engagement with transmission of power, first order driven gear, and realize first order deceleration; Below two gearwheels in both sides, coaxial with it, with speed, homodromal two small gears, second level driving gear, the center gearwheel below pinion shaft again, the engagement of second level driven gear, and realize that the second level slows down; The center hole of this center gearwheel was both coaxial with the valve rod central axis, and device connects mutually on valve rod, rotate synchronously with valve rod again, and the butterfly plate that drive is connected with valve rod does to rotate clockwise or counterclockwise, and realization was closed or the function of Open valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109382 CN1629524A (en) | 2003-12-15 | 2003-12-15 | Symmetrical butterfly valve adapted to ceramics or metal or engineering plastics manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109382 CN1629524A (en) | 2003-12-15 | 2003-12-15 | Symmetrical butterfly valve adapted to ceramics or metal or engineering plastics manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1629524A true CN1629524A (en) | 2005-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310109382 Pending CN1629524A (en) | 2003-12-15 | 2003-12-15 | Symmetrical butterfly valve adapted to ceramics or metal or engineering plastics manufacture |
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| Country | Link |
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| CN (1) | CN1629524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575623A (en) * | 2010-02-18 | 2012-07-11 | 三菱电机株式会社 | Structure for reducing axial leakage of valve |
-
2003
- 2003-12-15 CN CN 200310109382 patent/CN1629524A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575623A (en) * | 2010-02-18 | 2012-07-11 | 三菱电机株式会社 | Structure for reducing axial leakage of valve |
| CN102575623B (en) * | 2010-02-18 | 2015-06-17 | 三菱电机株式会社 | Structure for reducing axial leakage of valve |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |