CN104110509A - High-pressure three-way expansion type flat gate valve applied to severe environment - Google Patents
High-pressure three-way expansion type flat gate valve applied to severe environment Download PDFInfo
- Publication number
- CN104110509A CN104110509A CN201310132346.2A CN201310132346A CN104110509A CN 104110509 A CN104110509 A CN 104110509A CN 201310132346 A CN201310132346 A CN 201310132346A CN 104110509 A CN104110509 A CN 104110509A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- gate
- board
- pinion
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000033001 locomotion Effects 0.000 description 5
- 241001347978 Major minor Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a high-pressure three-way expansion type flat gate valve applied to severe environment. A trapezoidal thread is arranged on a valve stem, the valve stem is matched with a valve stem nut on a support through the trapezoidal thread, the lower end of a handwheel is connected with the valve stem nut, a valve body is in the shape of a three-way joint, a bonnet is located on the upside of the valve body, one end face of the bonnet is connected with the valve body, valve seats are arranged in an inner cavity formed by the valve body and the bonnet and mounted in valve seat grooves in the valve body, a gate plate component is arranged in inner middle of the valve body and comprises a main gate plate and an auxiliary gate plate, the main gate plate is connected with the lower end of the valve stem, and guide plates are arranged on the corresponding valve seats and used for controlling a swing block to swing. The condition of a single inlet and a single outlet of a conventional expansion type flat gate valve is changed, outlets perpendicular to an inlet are designed at the lower end of the valve body, the valve has a bilaterally-through medium flow direction and a mutually-perpendicular medium flow direction, and the valve location can be displayed visually. The expansion gate valve can meet the requirement on low operation torque, and is convenient to operate and reliable in sealing.
Description
Technical field
The present invention relates to a kind of plate valve, relate in particular to a kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment.
Background technique
Three-way valve has been widely used in industrial production, be mainly used in flowing medium commutation, three-way valve is generally tee ball valve, threeway plug valve etc. now, but that such valve has operation moment of torsion is large, and valve position shows the problem such as not directly perceived, it is little that expansion plate valve has moment of torsion, sealing is reliable, and the advantages such as valve position direct display are also occupied mass market in industrial pipeline, but due to its specific structure, be limited to have a single outlet always.
Summary of the invention
The object of the present invention is to provide a kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment, possesses the new product of " three-way valve " and " expanding flat gate valve " function simultaneously, meet three-way valve on industrial pipeline and reduce moment of torsion, extend life of valve, the requirements such as the intuitive of enhancing valve position instruction.
The present invention adopts following technological scheme to realize:
A kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment, comprise support, handwheel, valve body, valve gap, valve seat, valve rod and flashboard assembly, on described valve rod, there is trapezoidal thread, coordinate with the Stem Mut on support by trapezoidal thread, the lower end of described handwheel is connected with Stem Mut, it is characterized in that, described valve body is threeway shape, wherein Horizontal Exit end and entrance point are horizontal connected state, another vertical outlet end becomes plumbness with entrance point, described valve gap is positioned at valve body top, one end face of valve gap is connected with valve body, described flashboard assembly is arranged on the middle part in valve body, comprise main gate-board and auxiliary gate-board, main gate-board is connected with the lower end of valve rod, between main gate-board and auxiliary gate-board, there is cooperation inclined-plane, main, between auxiliary gate-board, be flexibly connected by centering block and pin, the flow direction of changeable Horizontal Exit end and vertical outlet end, described valve seat is arranged in the inner chamber of valve body and valve gap formation, be arranged in the valve seat groove on valve body, on described valve seat, be provided with guide plate, described centering block is between guide plate, being used for controlling centering block swings.
Further, described cantilever tip is provided with valve phase indicator, described valve phase indicator is single-stage partial gear transmission valve phase indicator, comprise pointer, valve position indicator panel, master gear, pinion, anti-rotation steel ball, upper cover and lower cover, described master gear is arranged on Stem Mut, and master gear is the partial gear that has two teeth, and master gear engages with pinion, on described pinion, pointer is installed, the pinion rotating pointer described valve position indicator panel instruction valve position that is rotatably assorted.
Further, anti-rotation steel ball is installed on the housing of described valve phase indicator, described anti-rotation steel ball coordinates and prevents that pinion from arbitrarily rotating with the anti-rotating hole on pinion.
The present invention has changed conventional expanded plate valve single import and export, in an outlet vertical with import of valve body lower end design, valve has left and right perforation and orthogonal two media flows to, in valve tip, single-stage partial gear transmission valve phase indicator is installed in addition, is intuitively shown valve position.For being used in conjunction with in harsh work condition environment, design valve rod safety cover, cuts off valve rod completely and contacts with external environment, improves life of valve.Expansion flashboard meets the little requirement of operation moment of torsion, easy to operate, and sealing is reliable.
Brief description of the drawings
Fig. 1 is overall sectional view of the present invention (state 1)
Fig. 2 is phantom of the present invention (state 2)
Fig. 3 is the enlarged view of single-stage partial gear transmission valve phase indicator.
Fig. 4 is single-stage partial gear transmission valve phase indicator and gear structure inside figure thereof.
Fig. 5 is three kinds of valve position state lower flashboard component states figure (state 1)
Fig. 6 is three kinds of valve position state lower flashboard component states figure (state 2)
Fig. 7 is three kinds of valve position state lower flashboard component states figure (state 3)
Embodiment
By the description to embodiment below; to more contribute to public understanding the present invention; but specific embodiment given claimant can't be considered as to the restriction to technical solution of the present invention, any definition to parts or technical characteristics change and/or to overall structure do form and immaterial conversion all should be considered as the protection domain that technological scheme of the present invention limits.
Description of reference numerals: valve body 1, valve seat 2, soft seal circle RPTFE-2a, firmly seal layer STL-2c, fire prevention graphite annulus 3, valve rod 4, valve gap 5, valve rod greasing 6, bolt and nut 7, filler 8, support 9, Stem Mut 10, single-stage partial gear transmission valve phase indicator 11, handwheel 12, valve rod protective housing 13, valve seat greasing 14, pointer 15, valve position indicator panel 16, upper cover 17a, lower cover 17b, pinion 18, anti-rotation steel ball 19, master gear 20, main gate-board 21, centering block 22, guide plate 23, auxiliary gate-board 24
A kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment, comprise support, handwheel, valve body, valve gap, valve seat, valve rod and flashboard assembly, on described valve rod, there is trapezoidal thread, coordinate with the Stem Mut on support by trapezoidal thread, the lower end of described handwheel is connected with Stem Mut, it is characterized in that, described valve body is threeway shape, wherein Horizontal Exit end and entrance point are horizontal connected state, another vertical outlet end becomes plumbness with entrance point, described valve gap is positioned at valve body top, one end face of valve gap is connected with valve body, described flashboard assembly is arranged on the middle part in valve body, comprise main gate-board and auxiliary gate-board, main gate-board is connected with the lower end of valve rod, between main gate-board and auxiliary gate-board, there is cooperation inclined-plane, main, between auxiliary gate-board, be flexibly connected by centering block and pin, the flow direction of changeable Horizontal Exit end and vertical outlet end, described valve seat is arranged in the inner chamber of valve body and valve gap formation, be arranged in the valve seat groove on valve body, on described valve seat, be provided with guide plate, described centering block is between guide plate, being used for controlling centering block swings, described cantilever tip is provided with valve phase indicator, described valve phase indicator is single-stage partial gear transmission valve phase indicator, comprise pointer, valve position indicator panel, master gear, pinion, anti-rotation steel ball, upper cover and lower cover, described master gear is arranged on Stem Mut, master gear is the partial gear that has two teeth, master gear engages with pinion, on described pinion, pointer is installed, the pinion rotating pointer described valve position indicator panel instruction valve position that is rotatably assorted, anti-rotation steel ball is installed on the housing of described valve phase indicator, described anti-rotation steel ball coordinates and prevents that pinion from arbitrarily rotating with the anti-rotating hole on pinion.
As shown in Figures 1 to 7, valve body 1 is connected by bolt and nut 7 with valve gap 5 one end, forms a body cavity that has an entrance point and two outlet end, and one of them outlet end is vertical with entrance point with straight-through another outlet end of entrance point level.On valve body 1, there are two valve seat grooves, stud with respectively valve seat 2, on described valve seat 2, stud with RPTFE seal ring 2a, and the hard sealing layer 2c of built-up welding STL, soft or hard compound seal surface formed.Valve seat 2 is press-fitted fire prevention graphite annulus 3 with valve body 1 cooperation place, to arrive flameproof effect.Between valve seat 2, there is major-minor flashboard combination (being flashboard assembly).Between main gate-board 21 and auxiliary gate-board 24, have an angle (coordinating inclined-plane), valve rod 4 drives main gate-board 21 to move up and down, and auxiliary gate-board 24 is motion thereupon also.After auxiliary gate-board positioning block pushes up the positioning table on valve gap 5 or valve body 1, main gate-board 21 continues mobile, and the angle between two plates makes the longitudinal movement between two flashboards become transverse shifting, thereby reaches the effect that flashboard expands, major-minor flashboard end face is close to valve seat 2, is reached sealing effect.In the time that auxiliary gate-board 24 positioning blocks leave the positioning table on valve gap 5 or valve body 1, flashboard deadweight makes flashboard pass through angle inclined-plane to draw in, and now flashboard both ends of the surface and sealing surface of seat are contactless.Valve event moment of torsion is reduced.Main valve plate 21 and auxiliary gate-board 24 upper surface spraying STL, improve flashboard surface hardness and friction resistant ability.Main gate-board 21 and auxiliary gate-board 24 form two angle inclined-planes by grinding, have reliably hard sealability at flashboard under the state expanding between two inclined-planes.Between main gate-board 21 and auxiliary gate-board 24, have centering block 22 to connect, centering block 22, with different swing of relative position of two flashboards, prevents that major-minor flashboard wedge is dead.
Three of centering block 22 kinds of location statuss as shown in Figures 5 to 7, centering block 22 is contained in two guide plates 23, and guide plate 23 press fit on valve seat 2.On main gate-board 21, have valve rod 4, the knee-action of valve rod 4 drives main gate-board 21 to move.Valve rod 4 is through valve gap 5, and with having filler 8 and valve rod greasing sealing between valve gap 5, both provide reliable sealing.On valve rod 4, have trapezoidal thread and Stem Mut 10 to coordinate, Stem Mut 10 is controlled and is rotated by handwheel 12, by trapezoidal thread, rotation motion is converted to the longitudinal movement up and down of valve rod between Stem Mut 10 and valve rod 4.Described Stem Mut 10 is assemblied on valve rack 9, and valve rack 9 is arranged on valve gap 5.
Single-stage partial gear transmission valve phase indicator 11 is housed on support 9 tops.Single-stage partial gear transmission valve phase indicator 11 is made up of pointer 15, valve position indicator panel 16, master gear 20, pinion 18, anti-rotation steel ball 19 and upper cover 17a, lower cover 17b.Master gear 20 is arranged on Stem Mut 10, and the rotation of Stem Mut drives master gear 20 transmissions.Master gear 20, for there being the partial gear of 2 teeth, engages with pinion 18, and the every rotation one of master gear 20 is enclosed, and 18 of pinions rotate two corresponding angles of the number of teeth.Rotation angle had been both 2x360/Z (Z is the number of teeth).On valve position indicator panel 16, have two kinds of valve position marks, aperture angle is calculated by valve full action number of turns x360/Z.It is upper that valve position indicator panel 16 is arranged on housing 17a, do not do spinning movement.Pointer 15 is housed on pinion 18, and pinion 18 rotates and drives pointer 15 to rotate, and coordinates valve position indicator panel 16 to indicate valve position.For preventing that pinion 18 from rotating under non-engagement state, anti-rotation steel ball 19 is housed on housing, anti-rotation steel ball 19 coordinates with the anti-rotating hole on pinion 18, prevents that pinion 18 from arbitrarily rotating.Valve rod 4 moves up and down at full course of action, is provided with valve rod safety cover 13 on handwheel 12 tops, makes valve rod 4 not be subject to external environmental, improves the security level of valve, make valve can applications well in harsh working condition, extend life of valve.
Certainly; the present invention can also have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (3)
1. the Highpressure Tee expanding flat gate valve being applied in severe rugged environment, comprise support, handwheel, valve body, valve gap, valve seat, valve rod and flashboard assembly, on described valve rod, there is trapezoidal thread, coordinate with the Stem Mut on support by trapezoidal thread, the lower end of described handwheel is connected with Stem Mut, it is characterized in that, described valve body is threeway shape, wherein Horizontal Exit end and entrance point are horizontal connected state, another vertical outlet end becomes plumbness with entrance point, described valve gap is positioned at valve body top, one end face of valve gap is connected with valve body, described flashboard assembly is arranged on the middle part in valve body, comprise main gate-board and auxiliary gate-board, main gate-board is connected with the lower end of valve rod, between main gate-board and auxiliary gate-board, there is cooperation inclined-plane, main, between auxiliary gate-board, be flexibly connected by centering block and pin, the flow direction of changeable Horizontal Exit end and vertical outlet end, described valve seat is arranged in the inner chamber of valve body and valve gap formation, be arranged in the valve seat groove on valve body, on described valve seat, be provided with guide plate, described centering block is between guide plate, being used for controlling centering block swings.
2. the Highpressure Tee expanding flat gate valve being applied in severe rugged environment according to claim 1, it is characterized in that, described cantilever tip is provided with valve phase indicator, described valve phase indicator is single-stage partial gear transmission valve phase indicator, comprise pointer, valve position indicator panel, master gear, pinion, anti-rotation steel ball, upper cover and lower cover, described master gear is arranged on Stem Mut, master gear is the partial gear that has two teeth, master gear engages with pinion, on described pinion, pointer is installed, the pinion rotating pointer described valve position indicator panel instruction valve position that is rotatably assorted.
3. the Highpressure Tee expanding flat gate valve being applied in severe rugged environment according to claim 2, it is characterized in that, anti-rotation steel ball is installed on the housing of described valve phase indicator, and described anti-rotation steel ball coordinates and prevents that pinion from arbitrarily rotating with the anti-rotating hole on pinion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310132346.2A CN104110509B (en) | 2013-04-17 | 2013-04-17 | A kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310132346.2A CN104110509B (en) | 2013-04-17 | 2013-04-17 | A kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104110509A true CN104110509A (en) | 2014-10-22 |
| CN104110509B CN104110509B (en) | 2017-06-06 |
Family
ID=51707429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310132346.2A Expired - Fee Related CN104110509B (en) | 2013-04-17 | 2013-04-17 | A kind of Highpressure Tee expanding flat gate valve being applied in severe rugged environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104110509B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915623A (en) * | 2019-04-16 | 2019-06-21 | 郑州鼎盛新技术有限公司 | A kind of box ceramic triple valve convenient for switching runner online |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103863A (en) * | 1975-04-14 | 1978-08-01 | Acf Industries, Incorporated | Actuator for expanding gate valves |
| US4393889A (en) * | 1981-03-17 | 1983-07-19 | Acf Industries, Incorporated | Fire-safe valve structure |
| EP0096998A1 (en) * | 1982-06-10 | 1983-12-28 | Barton Valve Company Inc | Gate valve and seat therefor |
| CN201779291U (en) * | 2010-09-20 | 2011-03-30 | 伯特利阀门集团有限公司 | Expanding flat gate valve |
| CN202371196U (en) * | 2011-12-26 | 2012-08-08 | 浙江上一阀门有限公司 | Flat-plate gate valve |
| CN102777676A (en) * | 2011-05-09 | 2012-11-14 | 正丰阀门集团有限公司 | Signal gate valve |
-
2013
- 2013-04-17 CN CN201310132346.2A patent/CN104110509B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103863A (en) * | 1975-04-14 | 1978-08-01 | Acf Industries, Incorporated | Actuator for expanding gate valves |
| US4393889A (en) * | 1981-03-17 | 1983-07-19 | Acf Industries, Incorporated | Fire-safe valve structure |
| EP0096998A1 (en) * | 1982-06-10 | 1983-12-28 | Barton Valve Company Inc | Gate valve and seat therefor |
| CN201779291U (en) * | 2010-09-20 | 2011-03-30 | 伯特利阀门集团有限公司 | Expanding flat gate valve |
| CN102777676A (en) * | 2011-05-09 | 2012-11-14 | 正丰阀门集团有限公司 | Signal gate valve |
| CN202371196U (en) * | 2011-12-26 | 2012-08-08 | 浙江上一阀门有限公司 | Flat-plate gate valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915623A (en) * | 2019-04-16 | 2019-06-21 | 郑州鼎盛新技术有限公司 | A kind of box ceramic triple valve convenient for switching runner online |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104110509B (en) | 2017-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102141164B (en) | General valve capable of being maintained on line | |
| JP6613035B2 (en) | High pressure needle valve and hydrogen station using the same | |
| CN103147718B (en) | 20000psi cage type throttling valve | |
| CN206694599U (en) | Inner elements of check valve and check valve | |
| CN202733009U (en) | Flange two-way pressure hard sealing butterfly valve | |
| CN203784001U (en) | Overflow valve | |
| CN202674339U (en) | Butt-weld bidirectional pressing hard seal butterfly valve | |
| CN104110509A (en) | High-pressure three-way expansion type flat gate valve applied to severe environment | |
| CN104806200A (en) | Plunger-type double-passage different-direction synchronous joint control check valve for double-layer continuous oil pipe | |
| CN107131353A (en) | A kind of two-way low operational torque high-pressure stop valve | |
| CN201925504U (en) | Square integrated-cover-type hand-operated rising-stem wedge-shaped gate valve | |
| CN104481437A (en) | Under-pressure low-torque square drill rod plug valve | |
| CN202195115U (en) | Orbit plug valve capable of being on-line maintained | |
| CN201909043U (en) | High-temperature and high-pressure butterfly valve of bidirectional-flow and self-seal elastic valve seat | |
| CN202580063U (en) | Stop valve | |
| CN104390035A (en) | Six-way switching ball valve | |
| CN204533573U (en) | A kind of two-way sphere metallic sealing butterfly valve | |
| CN104879511A (en) | Angle stop valve | |
| CN203098931U (en) | Novel abrasion resistance anti-corrosion compensation type half-ball valve | |
| CN2771585Y (en) | High-pressure forged steel ball valve | |
| CN203130038U (en) | 20000 psi cage-type throttle valve | |
| CN203823116U (en) | Ceramic ball valve with high corrosion resistance and erosive wear resistance | |
| CN201588954U (en) | Gate valve | |
| CN207538803U (en) | A kind of low torque high-voltage bidirectional plug valve | |
| CN201487246U (en) | Two-way pressure-bearing three-dimensional three-cone metal hard sealed butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200119 Address after: No. 169, Hangkong Road, Tianjin pilot free trade zone (Airport Economic Zone), 300308 Patentee after: TIANJIN ZHONGHE SCIENCE & TECHNOLOGY INDUSTRIAL CO.,LTD. Address before: 751500 natural village of Liu Zhen, Huian Town, Yanchi County, the Ningxia Hui Autonomous Region Patentee before: Liu Wei |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |