CN110274046A - A kind of wear-resisting sphere and its processing technology - Google Patents
A kind of wear-resisting sphere and its processing technology Download PDFInfo
- Publication number
- CN110274046A CN110274046A CN201910599315.5A CN201910599315A CN110274046A CN 110274046 A CN110274046 A CN 110274046A CN 201910599315 A CN201910599315 A CN 201910599315A CN 110274046 A CN110274046 A CN 110274046A
- Authority
- CN
- China
- Prior art keywords
- sphere
- wear
- inner hole
- notch
- resisting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005516 engineering process Methods 0.000 title claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000007373 indentation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/061—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor knee-joint
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prostheses (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a kind of wear-resisting spheres, are related to valve field, the ball including being equipped with inner hole, are equipped with notch at the both ends of inner hole, the profile wire shaped complications of the notch are in " W " type, and the notch uses the hyperboloid structure of rounding off.The present invention has long service life, wear-resisting advantage.
Description
Technical field
The present invention relates to valve fields, and in particular to a kind of wear-resisting sphere and its processing technology.
Background technique
High temperature (500 DEG C of >) high pressure (> Class 900) hard seal ball valve, in the moment of valve opening, the outlet of sphere
A crack is opened at place, and the flow velocity of fluid is especially high, very severe to washing away for valve seat, especially containing small in fluid media (medium)
Solid particle, it is easy to damage sealing surface of seat.Domestic and international valve expert devises W-shaped notch in sphere exit, makes valve
Moment increase circulation area is opened, flow velocity is reduced, reduces and valve seat is washed away, improve the service life of valve.It is this W-shaped
Notch, only, there is inflection point in notch and sphere inner hole and sphere outer circle junction, the R of very little is gone out with mechanical grinding in single-curved surface
Circular sliding slopes are not able to satisfy the tangent arc transition effect of bus still.
Summary of the invention
In order to overcome the shortcomings of that background technique, the present invention provide a kind of wear-resisting sphere with long service life.
The technical solution adopted in the present invention: a kind of wear-resisting sphere, the ball including being equipped with inner hole, the two of inner hole
End is equipped with notch, and the profile wire shaped complications of the notch are in " W " type, and the notch two sides use the hyperboloid knot of rounding off
Structure.
The plane tangent transition of the hyperboloid structure and ball of the notch, and it is tangential on the interior of ball simultaneously
Hole.
The ball is equipped with the surface curve coincideing with notch profile line and inner hole curve, the hyperboloid structure
Radius of curvature changes with the difference of the points of tangency in surface curve and inner hole curve, to form smooth sliding.
The notch is separately positioned on the two sides of inner hole, and a notch is arranged in one end.
Outer surface, inner hole and the indentation, there of the sphere are all coated with CrC or WC.
The application also provides another technical solution: a kind of ball valve with wear-resisting sphere, including valve rod, preceding valve seat, after
Valve seat and sphere, the sphere of the sphere using the above scheme.
The application also provides another technical solution: a kind of processing tool of wear-resisting sphere comprising fixture mounting plate,
It is mounted on fixture mounting plate center and for the mandrel of positioning ball inner hole and for positioning ball valve rod groove
Locating rod, fixture mounting plate side are equipped with mounting bracket, and the locating rod is horizontally inserted into the mounting bracket, described
Locating rod outer end is arranged with the adjustment clamp nut being threadedly engaged, and the mounting bracket lateral surface is equipped with for limiting adjustment pressure
Tight nut only makees the nut pressing plate rotated, and the mandrel includes the core of rising with male cone (strobilus masculinus) and the ringfeder with inner conical surface, the core that rises
On be equipped be bolted and by ringfeder push briquetting.
The fixture mounting plate is equipped with clump weight at the relative position of mounting bracket.
The application also provides another technical solution: a kind of processing technology of wear-resisting sphere, step include:
A, spherical outside surface, inner hole and the valve rod groove for processing sphere, processing tool is installed in machining center equipment；
B, it on sphere installation to processing tool, will first be installed in the outer circle of rise core and ringfeder, the locating rod positioned at sphere side
It is inserted into the valve rod groove of sphere, then adjusts depth of the ringfeder in sphere inner hole, so that sphere inner hole tensioner, fixed ball
Body；
C, positioning bar mounting bracket is installed on fixture mounting plate, adjusts clamp nut and locating rod, passes through connection screw thread tune
Whole lifting position, nut are positioned by nut pressing plate, but cannot be compressed；On fixture mounting plate with positioning the symmetrical position of bar mounting bracket
Set place's installation clump weight；
D, the three-dimensional appearance figure of the W-shaped hyperboloid notch of design being inputted into machining center, machining center will also input programming software,
Then machine operation person can input processing program and process, until whole completions.
Machining center in the step A uses the turn-milling complex machining center equipment of five-axle linkage.
Programming software in the step D uses edgecam programming software.
The beneficial effects of the present invention are:
1, using W type notch, when opening in valve wink or wink closes, increase circulation area, reduce the flow velocity of medium, mitigate because of medium height
Erosion of the speed flowing to valve seat；
2, W type notch uses the curved-surface structure of rounding off, avoids the connection inflection point of each bus intersection, effectively reduces W
The stress of type indentation, there is concentrated, and is avoided coating at inflection point and is burst apart, increases the service life of surface covering；
3, the variation of radius of curvature keeps the circulation of medium more smooth so that curved surface forms smooth transition, reduces solid in medium
Abrasion of the body particulate matter to W type notch.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the wear-resisting sphere of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the ball valve with wear-resisting sphere.
Fig. 3 is the side view of wear-resisting sphere.
Fig. 4 is the cross-sectional view in Fig. 3 at A-A.
Fig. 5 is the cross-sectional view in Fig. 3 at B-B.
Fig. 6 is the cross-sectional view in Fig. 3 at C-C.
Fig. 7 is the structural schematic diagram of the processing tool of wear-resisting sphere.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing:
As shown, a kind of wear-resisting sphere, the ball including being equipped with inner hole 4 are equipped with notch 1 at the both ends of inner hole 4, it is described
Ball is equipped with the surface curve 2 coincideing with 1 contour line of notch and inner hole curve 3, and the profile wire shaped of the notch 1 is tortuous
In " W " type, the notch 1 uses W type notch in the technical program using the curved-surface structure of rounding off, opening in valve wink or
When wink closes, increase circulation area, reduce the flow velocity of medium, mitigates the erosion because of medium flow at high speed to valve seat；
In addition, W type notch uses the curved-surface structure of rounding off, the connection inflection point of each bus intersection is avoided, is effectively reduced
The stress of W type indentation, there is concentrated, and is avoided coating at inflection point and is burst apart, increases the service life of surface covering.
In the present embodiment, as shown in Fig. 1, curve MON can respectively represent from a different perspective surface curve and
Inner hole curve, when representing surface curve, sight angle is from outside inside；When representing inner hole curve, sight angle is from interior past
It sees outside；
The curved-surface structure of the notch 1 and the tangent transition of surface curve 2 of ball, and it is tangential on the interior of ball simultaneously
Hole curve 3；The radius of curvature of the curved-surface structure changes with the difference of the points of tangency in surface curve 2 and inner hole curve 3,
To form smooth sliding, the variation of radius of curvature keeps the circulation of medium more smooth so that curved surface forms smooth transition,
Reduce abrasion of the solid particulate matter to W type notch in medium.
As shown in attached drawing 3 and attached drawing 4, W type notch Section A-A is intercepted, B1 point is located on MON curve, crosses B1 point and does tangent line
A1 is intersected at the extension line of bore passage, forms line segment A1B1 and A1C1, using line segment A1B1 and A1C1 as tangent line, crosses B1 dot
At circular arc, the circular arc center of circle is O1, and radius at this time is 4.48mm.
The notch 1 is separately positioned on the two sides of inner hole 4, and a notch 1 is arranged in one end.
Outer surface, inner hole and the indentation, there of the sphere are all coated with CrC or WC, and surface hardness reaches HRC68 or more, very
Hard very crisp, wedge angle or transition arc R is too small is easy to burst apart, W-shaped hyperboloid notch just solves this problem, substantially increases
The service life of product.
A kind of ball valve with wear-resisting sphere, including valve rod, preceding valve seat, rear valve base and sphere, the sphere is using upper
State the sphere in scheme.
A kind of processing technology of wear-resisting sphere, step include:
A, processing tool is installed in machining center equipment；
B, it on sphere installation to processing tool, will first be installed in the outer circle of rise core 86 and ringfeder 87, positioned at determining for sphere side
Position bar 81 is inserted into the valve rod groove of sphere, then adjusts ringfeder 87 in the depth of sphere inner hole, so that sphere inner hole tensioner, Gu
Determine sphere；
C, locating rod 81, mounting bracket 82 are installed on fixture mounting plate 84, adjustment clamp nut 83 and locating rod 81 pass through
Connection screw thread adjusts lifting position, and nut is positioned by nut pressing plate 85, but cannot be compressed；On fixture mounting plate 84 with locating rod
81, clump weight 89 is installed at 82 symmetric position of mounting bracket；
D, the three-dimensional appearance figure of the W-shaped hyperboloid notch of design being inputted into machining center, machining center will also input programming software,
Then machine operation person can input processing program and process, until whole completions.
Machining center in the step A uses the turn-milling complex machining center equipment of five-axle linkage.
Programming software in the step D uses edgecam programming software.
A kind of processing tool of wear-resisting sphere comprising fixture mounting plate 84 is mounted on 84 center of fixture mounting plate
Position and the mandrel for positioning ball inner hole and locating rod 81 for positioning ball valve rod groove, the fixture mounting plate 84
Side is equipped with mounting bracket 82, and the locating rod 81 is horizontally inserted into the mounting bracket 82, the outer end cap of the locating rod 81
Equipped with the adjustment clamp nut 83 being threadedly engaged, 82 lateral surface of mounting bracket is equipped with for limiting adjustment clamp nut 83
The nut pressing plate 85 rotated is only made, the mandrel includes the core 86 of rising with male cone (strobilus masculinus) and the ringfeder 87 with inner conical surface, the core that rises
The briquetting 88 for being bolted and pushing ringfeder 87 is installed on 86.
The fixture mounting plate 84 is equipped with clump weight 89 at the relative position of mounting bracket 82, and tooling is kept to rotate
When can guarantee balance.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
Every technical staff's notice: of the invention although the present invention is described according to above-mentioned specific embodiment
Invention thought be not limited in the invention, any repacking with inventive concept will all be included in this patent protection of the patent right
In range.
Claims (9)
1. a kind of wear-resisting sphere, the ball including being equipped with inner hole (4), it is characterised in that: be equipped with and lack at the both ends of inner hole (4)
Mouth (1), the profile wire shaped complications of the notch (1) are in " W " type, and notch (1) two sides use the hyperboloid of rounding off
Structure, the plane tangent transition of the hyperboloid structure and ball of the notch (1), and it is tangential on the interior of ball simultaneously
Hole.
2. wear-resisting sphere according to claim 1, it is characterised in that: the ball is equipped with and notch (1) contour line
Identical surface curve (2) and inner hole curve (3), the radius of curvature of the hyperboloid structure is with surface curve (2) and inner hole
The difference of points of tangency on curve (3) and change, to form smooth sliding.
3. wear-resisting sphere according to claim 1, it is characterised in that: the notch (1) is separately positioned on the two of inner hole (4)
Side, and a notch (1) is arranged in one end.
4. wear-resisting sphere according to claim 1, it is characterised in that: outer surface, inner hole and the indentation, there of the sphere
All it is coated with CrC or WC.
5. a kind of ball valve with wear-resisting sphere, including valve rod (5), preceding valve seat (6), rear valve base (7) and sphere, feature exist
In: the sphere uses the wear-resisting sphere as described in claim 1-4 any one.
6. a kind of processing tool of wear-resisting sphere, it is characterised in that: it includes fixture mounting plate (84), is mounted on the fixture peace
Loading board (84) center and the mandrel for positioning ball inner hole and locating rod (81) for positioning ball valve rod groove, institute
It states fixture mounting plate (84) side to be equipped with mounting bracket (82), the locating rod (81) is horizontally inserted into the mounting bracket (82)
In, locating rod (81) outer end is arranged with the adjustment clamp nut (83) being threadedly engaged, mounting bracket (82) lateral surface
It is equipped with and only makees the nut pressing plate (85) rotated for limiting adjustment clamp nut (83), the mandrel includes rising with male cone (strobilus masculinus)
Core (86) and ringfeder (87) with inner conical surface are equipped with the briquetting for being bolted and pushing ringfeder (87) on the core that rises (86)
(88).
7. the processing tool of wear-resisting sphere according to claim 6, it is characterised in that: the fixture mounting plate (84) is being pacified
It fills and clump weight (89) is installed at the relative position of bracket (82).
8. a kind of processing technology of wear-resisting sphere, which is characterized in that its step includes:
A, spherical outside surface, inner hole and the valve rod groove for processing sphere, processing tool is installed in machining center equipment；
B, it on sphere installation to processing tool, will first be installed in the outer circle of rise core and ringfeder, the locating rod positioned at sphere side
It is inserted into the valve rod groove of sphere, then adjusts ringfeder in the depth of sphere inner hole, so that sphere inner hole tensioner, fixed sphere；
C, positioning bar mounting bracket is installed on fixture mounting plate, adjusts clamp nut and locating rod, passes through connection screw thread tune
Whole lifting position, nut are positioned by nut pressing plate, but cannot be compressed；On fixture mounting plate with positioning the symmetrical position of bar mounting bracket
Set place's installation clump weight；
D, the three-dimensional appearance figure of the W-shaped hyperboloid notch of design being inputted into machining center, machining center will also input programming software,
Then machine operation person can input processing program and process, until whole completions.
9. the processing technology of wear-resisting sphere according to claim 8, it is characterised in that: the machining center in the step A
Using the turn-milling complex machining center equipment of five-axle linkage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599315.5A CN110274046B (en) | 2019-07-04 | 2019-07-04 | Wear-resistant ball and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599315.5A CN110274046B (en) | 2019-07-04 | 2019-07-04 | Wear-resistant ball and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110274046A true CN110274046A (en) | 2019-09-24 |
| CN110274046B CN110274046B (en) | 2020-05-05 |
Family
ID=67962796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910599315.5A Active CN110274046B (en) | 2019-07-04 | 2019-07-04 | Wear-resistant ball and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274046B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037236A (en) * | 2019-12-31 | 2020-04-21 | 苏州工业园区博斯塔机械有限公司 | Method for machining small-caliber ball valve |
| CN113653824A (en) * | 2021-08-13 | 2021-11-16 | 哈电集团哈尔滨电站阀门有限公司 | Scouring-resistant ball valve |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582461A (en) * | 1981-08-10 | 1986-04-15 | Ziegelmeyer Harold R | Precision rotating tool mounting device |
| CN103722202A (en) * | 2013-12-23 | 2014-04-16 | 重庆布莱迪仪器仪表有限公司 | Machining tool for valve spools of ball valves |
| CN105443796A (en) * | 2015-12-18 | 2016-03-30 | 航天长征化学工程股份有限公司 | Metal sealing wear-resisting ball valve |
| CN205147365U (en) * | 2015-12-08 | 2016-04-13 | 新昌县武鹏机械有限公司 | Frock clamp of processing sphere |
| CN205350414U (en) * | 2016-01-08 | 2016-06-29 | 浙江中德自控科技股份有限公司 | Case subassembly suitable for high pressure ball valve |
| CN205520658U (en) * | 2016-03-31 | 2016-08-31 | 泉州市华茂机械设备有限公司 | Positioning mechanism of thrust wheel side cap processing |
| CN105903996A (en) * | 2016-06-22 | 2016-08-31 | 无锡惠山泵业有限公司 | Ball valve reamer machine |
| CN106763870A (en) * | 2017-01-19 | 2017-05-31 | 上海凯工阀门股份有限公司 | A kind of Wear-resistant, high-temperature resistant metal hard-sealing ball valve |
| CN206855032U (en) * | 2017-06-23 | 2018-01-09 | 福建上润精密仪器有限公司 | Valve ball valve port frock clamp |
| CN208230884U (en) * | 2018-04-02 | 2018-12-14 | 自贡硬质合金有限责任公司 | A kind of frock clamp |
| CN208262326U (en) * | 2018-04-13 | 2018-12-21 | 盐城市华凯阀业制造有限公司 | A kind of valve ball valve port fixture for processing |
| CN208759047U (en) * | 2018-08-24 | 2019-04-19 | 苏州工业园区宏斯特机电有限公司 | A kind of Set and Positioning equipment |
-
2019
- 2019-07-04 CN CN201910599315.5A patent/CN110274046B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582461A (en) * | 1981-08-10 | 1986-04-15 | Ziegelmeyer Harold R | Precision rotating tool mounting device |
| CN103722202A (en) * | 2013-12-23 | 2014-04-16 | 重庆布莱迪仪器仪表有限公司 | Machining tool for valve spools of ball valves |
| CN205147365U (en) * | 2015-12-08 | 2016-04-13 | 新昌县武鹏机械有限公司 | Frock clamp of processing sphere |
| CN105443796A (en) * | 2015-12-18 | 2016-03-30 | 航天长征化学工程股份有限公司 | Metal sealing wear-resisting ball valve |
| CN205350414U (en) * | 2016-01-08 | 2016-06-29 | 浙江中德自控科技股份有限公司 | Case subassembly suitable for high pressure ball valve |
| CN205520658U (en) * | 2016-03-31 | 2016-08-31 | 泉州市华茂机械设备有限公司 | Positioning mechanism of thrust wheel side cap processing |
| CN105903996A (en) * | 2016-06-22 | 2016-08-31 | 无锡惠山泵业有限公司 | Ball valve reamer machine |
| CN106763870A (en) * | 2017-01-19 | 2017-05-31 | 上海凯工阀门股份有限公司 | A kind of Wear-resistant, high-temperature resistant metal hard-sealing ball valve |
| CN206855032U (en) * | 2017-06-23 | 2018-01-09 | 福建上润精密仪器有限公司 | Valve ball valve port frock clamp |
| CN208230884U (en) * | 2018-04-02 | 2018-12-14 | 自贡硬质合金有限责任公司 | A kind of frock clamp |
| CN208262326U (en) * | 2018-04-13 | 2018-12-21 | 盐城市华凯阀业制造有限公司 | A kind of valve ball valve port fixture for processing |
| CN208759047U (en) * | 2018-08-24 | 2019-04-19 | 苏州工业园区宏斯特机电有限公司 | A kind of Set and Positioning equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037236A (en) * | 2019-12-31 | 2020-04-21 | 苏州工业园区博斯塔机械有限公司 | Method for machining small-caliber ball valve |
| CN111037236B (en) * | 2019-12-31 | 2021-01-12 | 苏州工业园区博斯塔机械有限公司 | Method for machining small-caliber ball valve |
| CN113653824A (en) * | 2021-08-13 | 2021-11-16 | 哈电集团哈尔滨电站阀门有限公司 | Scouring-resistant ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274046B (en) | 2020-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11091980B2 (en) | Streamlined valve assembly for downhole pump of reciprocating pump system | |
| US8328163B2 (en) | Vacuum valve with a sealing ring | |
| CN110274046A (en) | A kind of wear-resisting sphere and its processing technology | |
| US3458170A (en) | Pressure gradient valve | |
| EP3788280B1 (en) | A valve sealing arrangement and a valve seat | |
| CN106931185A (en) | A kind of bellows control valve | |
| CN104747738B (en) | A kind of heavy-caliber high-temperature high pressure sleeve adjusting valve | |
| CA3050517C (en) | Multi-inlet frack head system | |
| GB2343735A (en) | Forged hollow valve ball | |
| CN107725799A (en) | A kind of rotation and position indicates integral stop valve | |
| CN106567936A (en) | Adjustable type elastic ceramic stop valve | |
| CN201982704U (en) | Low-noise stepwise pressure-reducing flow-control valve | |
| CN207178754U (en) | A kind of Flow-rate adjustment V-type ball valve | |
| CN209743637U (en) | high-pressure angle type throttle valve | |
| JP6525356B2 (en) | Check valve and refrigeration cycle device | |
| CN204900962U (en) | Sealed relief valve of multi -level buffer formula bulb fine setting | |
| CN205479402U (en) | High life high pressure isolating valve | |
| CN109990121A (en) | A kind of swing check valve | |
| CN2386271Y (en) | Adjustable sluice valve | |
| CN208816757U (en) | A kind of forged steel bleeder valve | |
| CN207830816U (en) | A kind of anti-vacuum unloads dirty pipeline fatigue rupture device | |
| CN215908416U (en) | Hydraulic mining valve seat with deformation prevention function | |
| CN208221728U (en) | A kind of ball-cock assembly preventing displacement | |
| CN103363166B (en) | A kind of high-pressure unloading valve | |
| CN220286549U (en) | High-pressure multi-core type depressurization straight-through control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |