CN102155548B - Sliding plate valve - Google Patents
Sliding plate valve Download PDFInfo
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- CN102155548B CN102155548B CN2011100939497A CN201110093949A CN102155548B CN 102155548 B CN102155548 B CN 102155548B CN 2011100939497 A CN2011100939497 A CN 2011100939497A CN 201110093949 A CN201110093949 A CN 201110093949A CN 102155548 B CN102155548 B CN 102155548B
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- 238000007790 scraping Methods 0.000 claims description 7
- 239000007779 soft material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The invention discloses a sliding plate valve which comprises a valve body, a valve seat and a sliding plate, wherein the valve body, the valve seat and the sliding plate are all provided with through holes for medium to flow through; positions of the through holes on the valve body and the valve seat correspond; the outer side of the valve body is used for connecting a pipeline; the inner side of the valve body tightly pushes the valve seat against the sliding plate; an elastic element is arranged between the outer side of the valve seat and the valve body; the inner side of the valve seat comprises a sealing working surface which is used for bearing the pressure of a valve chamber; the sealing working surface compresses the sliding plate; the valve seat also comprises a pressure drawing surface which is used for balancing the pressure of the valve chamber; and the force bearing direction of the pressure drawing surface is opposite to that of the sealing working surface. In the sliding plate valve, the valve seat is provided with the pressure drawing surface and the pressure of a pipeline is introduced for balancing the pressure of the valve chamber bore by the sealing working surface of the valve seat, thereby solving the force bearing balance problem of the valve seat of the sliding plate valve in a large diameter pipeline and at a high pressure working condition, reducing the requirements on an elastic element, simultaneously solving the influence of pressure fluctuation and impact of the pipeline on the sealing performance of the valve seat and ensuring the reliable sealing of the valve seat.
Description
Technical field
The present invention relates to valve field, relate in particular to a kind of sluice valve.
Background technique
Valve is to be used to regulate or the device of the flow of the conveyance conduit of switching gas, liquid, solid or its mixed medium, is widely used in industrial fields such as oil, chemical industry, electric power, metallurgy, building materials.Traditional valve comprises ball valve, plate valve, camflex valve, gate valve, butterfly valve, sluice valve etc., and wherein, sluice valve is a sluice valve, and it is owing to outstanding characteristics such as volume is little, in light weight, long service life have a good application prospect.
Sluice valve; Comprise parts such as valve body, valve seat and slide plate; All offer the corresponding through hole in position so that gas, liquid, solid or its mixed medium etc. flow through on valve seat and the valve body, the slide plate that has through hole equally and produces slide relative between the sealed working face of valve seat under the driving of actuator; Thereby control the switch and the flow of through hole, also be provided with the elastic element of the valve pocket pressure that sealed working face bore that is used for the balance valve seat between valve seat and the valve body.
At present; The valve seat construction of sluice valve adopts whole board-like or tray type structure usually, and its one side cooperates with the internal surface gaps of valve body, and the another side opposite with this face becomes sealed working face and contact slide plate; Be typically provided with elastic elements such as dish spring between valve seat and the valve body; Elastic element applies one near slide plate direction elastic force to valve seat, thereby keeps valve seat to contact with the good of slide plate, perhaps when the valve base sealing working surface weares and teares, compensates to avoid seal failure automatically.Sluice valve is in unlatching or turn off process; The direct contact medium of at least a portion sealed working face of valve seat and bear very big valve pocket pressure; Elastic element provides certain elastic force to come this valve pocket pressure of balance; So very high request is proposed elastic element; Consider sluice valve open or turn off process in the maximal valve cavity pressure that sealed working face bore of valve seat be directly proportional with factors such as upstream pressure, valve apertures, when only coming the equilibrium valve cavity pressure under large diameter pipeline or the high pressure operating mode, possiblely make the use of sluice valve limited owing to the elastic force of elastic element is limited by elastic element.
Summary of the invention
The technical problem underlying that the present invention will solve is; A kind of sluice valve is provided; The valve pocket pressure that sealed working face through introduction pipe pressure balance valve seat bears improves the reliability of valve to adapt to harsh operating modes such as large diameter pipeline, high pressure and pipeline pressure fluctuation.
For solving the problems of the technologies described above, the present invention provides a kind of sluice valve, comprises valve body, valve seat and slide plate; All have on said valve body, valve seat and the slide plate and be used for the through hole that MEDIA FLOW is crossed, the lead to the hole site on said valve body and the valve seat is corresponding, and the said valve body outside is used for connecting tube; The inboard is tight against said valve seat on said slide plate; Between the said valve seat outside and the said valve body elastic element is set, the inboard comprises the sealed working face that is used to bear valve pocket pressure, and said sealed working face presses said slide plate; Said valve seat also comprises the impulse face that is used for the said valve pocket pressure of balance, said impulse face and said sealed working face stressed in the opposite direction.
Further, said impulse face is arranged on the internal face of through hole on the said valve seat, perhaps is arranged on the surface in the said valve seat outside.
Preferably, said impulse face is provided with along the direction enlarging of said slide plate to said valve body.
Preferably, the internal face of through hole also has the impulse power-assisted face that is provided with in opposite directions with said impulse face on the said valve body, and said impulse power-assisted face is positioned at the said impulse face outside.
That said impulse face is is smooth, indent, evagination or corrugated anchor ring.
In a kind of mode of execution, said valve body also comprises tracting pressuring hole, and the internal face of said tracting pressuring hole through hole on said valve body extends to said impulse face.
In the another kind of mode of execution, said valve seat also comprises tracting pressuring hole, and said tracting pressuring hole extends to the internal face of through hole on the said valve seat from said impulse face, or extends to the sealed working face of said valve seat from said impulse face.
Preferably, said valve seat is a seat ring, and said valve body inboard also is provided with first groove of the periphery extension of through hole on said valve body, and said seat ring is embedded in said first groove.
Preferably, also inlay the mold insert that hard or soft material are processed on the sealed working face of said seat ring.
Further, also comprise outer scraping ring, the inboard surface of said valve body also is provided with second groove, and said second groove is positioned at the periphery of said first groove; Said outer scraping ring is embedded in said second groove, and is pressed between said slide plate and the valve body.
Also comprise stuffing box packing and two valve gaps; Said valve body and valve seat all have two; And two said valve bodies and valve seat correspondence are arranged on the both sides up and down of said slide plate; Two said valve gaps are fixedly connected the right ends of two said valve bodies respectively, and seal the joint of said slide plate and said valve end through said stuffing box packing.
The invention has the beneficial effects as follows: the present invention designs the pressure balancing structure of impulse face as valve seat on valve seat; Come the valve pocket pressure that bears on the sealed working face of balance valve seat through introduction pipe pressure; When valve pocket pressure acts on the sealed working face of valve seat; Impulse power can act on one side opposite with sealed working face on the valve seat, and these two force directions are opposite and cancel out each other, and valve seat is fitted tightly with slide plate all the time; Solved the valve seat stress balance problem of sluice valve under large diameter pipeline and high pressure operating mode; Reduced requirement, solved the pipeline pressure fluctuation simultaneously and impacted the influence that the sealability of valve seat is brought, guaranteed the reliable sealing of valve seat for element.
Description of drawings
Fig. 1 is the sluice valve stereogram of an embodiment of the present invention;
Fig. 2 is the sluice valve decomposition texture schematic representation of an embodiment of the present invention;
Fig. 3 is the sectional view of an embodiment of the present invention sluice valve at impulse face place;
Fig. 4 offers the sectional view of tracting pressuring hole on valve body for an embodiment of the present invention sluice valve;
Fig. 5 offers the sectional view of tracting pressuring hole on valve seat for an embodiment of the present invention sluice valve;
Fig. 6 offers the sectional view of tracting pressuring hole on valve seat for the another kind of embodiment's sluice valve of the present invention;
Fig. 7 is the cross-sectional schematic of a kind of sluice valve of the present invention in full-gear;
Fig. 8 is the cross-sectional schematic of a kind of sluice valve of the present invention at the complete shut-down state;
Fig. 9 is the cross-sectional schematic of a kind of sluice valve of the present invention in half-open position.
Embodiment
Combine accompanying drawing that the present invention is done further explain through embodiment below.
Please refer to Fig. 1 and Fig. 2, the sluice valve of this mode of execution comprises constituent elements such as valve body 1, valve seat, elastic element 4, slide plate 11, mounting flange 5, valve gap 10, connector 9.
Wherein, All have on valve body 1, valve seat and the slide plate 11 and be used for the through hole that MEDIA FLOW is crossed; Lead to the hole site on valve body 1 and the valve seat is corresponding; These through holes are interconnected under sluice valve standard-sized sheet or half-open state and are formed for holding the valve pocket of medium, and according to the concrete purposes of sluice valve, medium comprises liquid, gas, solid or its mixture etc.Valve body 1 outside is connected with pipeline through mounting flange 5, and the inboard is tight against valve seat on the surface of contact of slide plate 11.As shown in Figure 3, between the valve seat outside and the valve body 1 elastic element 4 is set, the inboard comprises the sealed working face 301 that is used to bear valve pocket pressure, sealed working face 301 presses slide plate 11.Elastic element 4 can be parts such as dish spring, can utilize its elastic force to valve seat certain pretension compensating action to be provided, and the sealed working face of valve seat is close on the slide plate 11 all the time.An end of slide plate 11 links to each other with actuator through connector 9; This actuator can drive slide plate 11, and to be close to the sealed working face of valve seat reciprocating; Make through hole on the slide plate 11 on the valve seat through hole or produce certain positional deviation with through hole on the valve seat so that the on off state of adjustment sluice valve is big or small with flow.
Valve seat also comprises the impulse face 302 that is used for the equilibrium valve cavity pressure; This impulse face 302 is towards pipeline, stressed in the opposite direction with sealed working face 301, and impulse face 302 breaks away from valve bodies 1 and does not directly contact with valve body 1; When having mobile medium in the valve pocket; Because impulse face 302 is towards pipeline, so the pipeline pressure that medium acts on the impulse face has a component along the media flow direction, and this component is opposite as the valve pocket pressure direction that impulse power and sealed working face 301 are born; Therefore this valve pocket pressure of balance and alleviate the work load of elastic element 4 to a certain extent; When the manifold pressure fluctuation or when having bigger impact to occur, valve seat elastic element 4 behind combines the impulse effect of impulse faces 302 can adapt to these to change, make valve seat have good sealing effect; Reduced the requirement of elastic element 4; Even under large diameter pipeline or high pressure operating mode, when the elastic force of elastic element 4 has in limited time, impulse face 301 still can utilize its good pressure balance effect to guarantee the excellent sealing of valve pocket.
The position of impulse face 302 can be according to the real needs flexible design; The internal face that for example can be arranged on through hole on the valve seat directly becomes the part of this through-hole wall face; Perhaps be positioned at the surface in the valve seat outside, preferably, this impulse face 302 is provided with along the direction enlarging of slide plate 11 to valve body 1.But the size of impulse face 302 and shape be flexible design also, for example is smooth, indent, evagination or corrugated anchor ring.
Further; In order further to strengthen the impulse effect; The internal face of through hole also has the impulse power-assisted face 104 that is provided with in opposite directions with impulse face 302 on the valve body 1; This impulse power-assisted face 104 is positioned at impulse face 302 outsides, can make medium accommodating in the valve pocket between impulse power-assisted face 104 and impulse face 302 and be convenient to impulse face 302 is applied certain pipeline pressure.
Valve seat can be whole board-like or tray type structure; Its one side cooperates with the internal surface of valve body 1; Another side becomes sealed working face and contacts slide plate 11, makes valve seat have bigger sealed working face like this, owing to the limited balanced action of playing of the area of impulse face 302 is also limited.Preferably; Valve seat adopts the seat ring 3 of annular, and valve body 1 inboard also is provided with peripheral first groove 101 that extends of through hole on valve body 1, and seat ring 3 is embedded in first groove 101; Its loop configuration provides the through hole that supplies MEDIA FLOW to cross equally, and this through hole is corresponding with lead to the hole site on the valve body 1.The ring structure of seat ring 3 has reduced the area of sealed working face greatly; Correspondingly reduce it and born the area of valve pocket pressure; Under the certain situation of valve pocket pressure, make sealed working face bear less valve pocket pressure, the valve pocket pressure that the impulse power that therefore impulse face 302 is born is easy to bear with sealed working face 301 balances each other, and has therefore further reduced the requirement for elastic element 4; Making between seat ring 3 and the slide plate 11 all the time can reliable sealing, ensures the normal use of sluice valve.
The medium that flows in the valve pocket gets into elastic element 4 and damages part such as dish spring, also is provided with at least one seal ring in first groove 101, is sealed and matched through the sealing circle between seat ring 3, valve body 1 and the seat ring fixture 2.For example this mode of execution comprises three seal rings, is separately positioned on the contacting point of seat ring fixture 2 inner edges and seat ring 3 and contacting point and the seat ring 3 and the junction of valve body 1 near impulse face 302 1 sides of seat ring fixture 2 outer rims and first groove 101.
Specification and use scene according to sluice valve; The material of seat ring 3, size and dimension can be selected flexibly; For example the material selection steel are perhaps ceramic, and thickness is slightly less than the degree of depth of first groove 101, and shape can be rule or irregular round; The sealed working face of seat ring 3 also can be inlayed the mold insert that certain hard or soft material are processed, so that reach better sealing effect.
Further, sluice valve also comprises outer scraping ring 14, and valve body 1 inboard surface also is provided with the periphery that second groove, 102, the second grooves 102 are positioned at first groove 101; Outer scraping ring 14 is embedded in second groove 102; And be pressed between slide plate 11 and the valve body 1 through the elastic element between outer scraping ring 14 and the valve body 1; Avoid sluice valve to be converted to by open mode in the process of half-open or closed condition, the medium that flows moves and damages stuffing box packing 13 even cause the phenomenon of leakage to valve body 1 end along the slit between valve body 1 and the slide plate 11.
After impulse face 302 is set on the valve seat, also can come the valve pocket pressure on the balance valve seat sealed working face 301 through pipeline or valve pocket and external pressure being introduced on this impulse face 302 opening the hole on valve body 1 or the valve seat.In the another kind of mode of execution as shown in Figure 4; Valve body 1 also comprises tracting pressuring hole 105; The internal face of this tracting pressuring hole 105 through hole on valve body 1 extends to impulse face 302; When making valve seat bear big valve pocket pressure when having working fluid or gas in the valve pocket, can hold certain medium in this tracting pressuring hole 105, this moment the impulse certain valve pocket pressure of face 302 balances and alleviate the work load of elastic element 4.Tracting pressuring hole 105 also can be arranged on the valve seat, and in the mode of execution as shown in Figure 5, tracting pressuring hole 105 extends to the internal face of through hole on the valve seat from impulse face 302; In the mode of execution as shown in Figure 6; Tracting pressuring hole 105 extends to the sealed working face 301 of valve seat from impulse face 302; And this tracting pressuring hole 105 preferably is arranged on a side of valve seat, can be conducted with the through hole on the slide plate 11 in the tracting pressuring hole 105 of this side when sluice valve closes the closed procedure meta.More than in each mode of execution, impulse face 302 can be arranged on the surface in the valve seat outside, and the length of tracting pressuring hole 105, diameter, quantity, position and shape all can be provided with as required flexibly.
For most of sluice valves, please refer to Fig. 1, also comprise stuffing box packing 13 and two valve gaps 10; Valve body 1 all has two with seat ring 3; And two valve bodies 1 and seat ring 3 correspondences are arranged on the both sides up and down of slide plate 11, and two valve gaps 10 are fixedly connected the right ends of two valve bodies 1 respectively, and through one deck or multi-layer sealed filler 13 drop bars 11 joint with valve body 1 end; Slide plate 11 1 ends pass a valve gap 10 and link to each other with actuator, and the other end passes another valve gap 10.The outside of two valve bodies 1 all is fixed for the mounting flange 5 that is connected with pipeline, and this mounting flange 5 is complementary with through hole on the valve body 1.
As shown in Figure 7, when sluice valve was in full-gear, the through hole on valve body 1, seat ring 3 and the slide plate 11 was communicated with, and impulse face 302 bears certain impulse power and makes the sluice valve reliable sealing.
As shown in Figure 8, when sluice valve was in closed condition, through hole on valve body 1 and the seat ring 3 and the through hole on the slide plate 11 misplaced fully, and impulse face 302 bears certain impulse power and makes the sluice valve reliable turn-off.
As shown in Figure 9; When sluice valve is in half-open position, stagger in through hole on valve body 1 and the seat ring 3 and the through hole part on the slide plate 11, and valve pocket pressure acts on the sealed working face 301 of seat ring 3; The impulse masterpiece is used on the impulse face 302 opposite with sealed working face on the seat ring 3; These two force directions are opposite and cancel out each other, and seat ring 3 is fitted tightly with slide plate 11 all the time, improved the reliability of sluice valve.
The present invention designs the pressure balancing structure of impulse face 302 as valve seat on valve seat; Come the valve pocket pressure that bears on the sealed working face of balance valve seat through introduction pipe pressure; Solved the valve seat stress balance problem of sluice valve under large diameter pipeline and high pressure operating mode; Reduced requirement, solved the pipeline pressure fluctuation simultaneously and impacted the influence that the sealability of valve seat is brought, guaranteed the reliable sealing of valve seat for elastic element.
Above content is to combine concrete mode of execution to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (10)
1. sluice valve; Comprise valve body (1), valve seat and slide plate (11), all have on said valve body (1), valve seat and the slide plate (11) and be used for the through hole that MEDIA FLOW is crossed that through hole on the said valve body (1) and the lead to the hole site on the valve seat are corresponding; Said valve body (1) outside is used for connecting tube; Said valve body (1) is inboard to be tight against said valve seat on said slide plate (11), between the said valve seat outside and the said valve body (1) elastic element (4) is set, and said valve seat inboard comprises the sealed working face (301) that is used to bear valve pocket pressure; Said sealed working face (301) presses said slide plate (11); It is characterized in that said valve seat also comprises the impulse face (302) that is used for the said valve pocket pressure of balance, said impulse face (302) is stressed in the opposite direction with said sealed working face (301).
2. sluice valve as claimed in claim 1 is characterized in that, said impulse face (302) is arranged on the internal face of through hole on the said valve seat, perhaps is arranged on the surface in the said valve seat outside.
3. sluice valve as claimed in claim 1 is characterized in that, said impulse face (302) is provided with along the direction enlarging of said slide plate (11) to said valve body (1).
4. sluice valve as claimed in claim 3; It is characterized in that; The internal face that said valve body (1) is gone up through hole also has the impulse power-assisted face (104) that is provided with in opposite directions with said impulse face (302), and said impulse power-assisted face (104) is positioned at said impulse face (302) outside.
5. sluice valve as claimed in claim 1 is characterized in that, that said impulse face (302) is is smooth, indent, evagination or corrugated anchor ring.
6. sluice valve as claimed in claim 1 is characterized in that, said valve body (1) also comprises tracting pressuring hole (105), and the internal face that said tracting pressuring hole (105) is gone up through hole from said valve body (1) extends to said impulse face (302).
7. sluice valve as claimed in claim 1; It is characterized in that; Said valve seat also comprises tracting pressuring hole (105); Said tracting pressuring hole (105) extends to the internal face of through hole on the said valve seat from said impulse face (302), or extends to the sealed working face (301) of said valve seat from said impulse face (302).
8. like each described sluice valve in the claim 1 to 7; It is characterized in that; Said valve seat is seat ring (3); Said valve body (1) inboard also is provided with first groove (101) from the periphery extension of through hole to said valve body (1) that go up, and said seat ring (3) is embedded in said first groove (101).
9. sluice valve as claimed in claim 8 is characterized in that, also inlays the mold insert that hard or soft material are processed on the sealed working face (301) of said seat ring (3).
10. sluice valve as claimed in claim 8 is characterized in that, also comprises outer scraping ring (14), and the inboard surface of said valve body (1) also is provided with second groove (102), and said second groove (102) is positioned at the periphery of said first groove (101); Said outer scraping ring (14) is embedded in said second groove (102), and is pressed between said slide plate (11) and the valve body (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100939497A CN102155548B (en) | 2011-04-14 | 2011-04-14 | Sliding plate valve |
| PCT/CN2012/073896 WO2012139504A1 (en) | 2011-04-14 | 2012-04-12 | Sliding plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100939497A CN102155548B (en) | 2011-04-14 | 2011-04-14 | Sliding plate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102155548A CN102155548A (en) | 2011-08-17 |
| CN102155548B true CN102155548B (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100939497A Expired - Fee Related CN102155548B (en) | 2011-04-14 | 2011-04-14 | Sliding plate valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN102155548B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139504A1 (en) * | 2011-04-14 | 2012-10-18 | Zhang Wei | Sliding plate valve |
| CN105134990A (en) * | 2015-08-31 | 2015-12-09 | 合肥通用机械研究院 | High-pressure flat gate valve valve-seat support ring meeting full-differential-pressure opening requirements |
| CN110454582B (en) * | 2019-08-30 | 2023-08-25 | 中冶焦耐(大连)工程技术有限公司 | Coke oven raw gas shut-off valve and installation and maintenance method thereof |
| CN112443672B (en) * | 2019-08-30 | 2023-09-19 | 浙江三花智能控制股份有限公司 | Valve device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5927684A (en) * | 1996-10-23 | 1999-07-27 | Zimmerman & Jansen Gmbh | Slide, particularly pipe bridge slide |
| WO2007013227A1 (en) * | 2005-07-29 | 2007-02-01 | Kitz Sct Corporation | Slide valve |
| CN201992104U (en) * | 2011-04-14 | 2011-09-28 | 张伟 | Sliding plate valve |
-
2011
- 2011-04-14 CN CN2011100939497A patent/CN102155548B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5927684A (en) * | 1996-10-23 | 1999-07-27 | Zimmerman & Jansen Gmbh | Slide, particularly pipe bridge slide |
| CN1234102A (en) * | 1996-10-23 | 1999-11-03 | 切姆曼和杰生股份有限公司 | Slider, especially pipe bridge slider |
| WO2007013227A1 (en) * | 2005-07-29 | 2007-02-01 | Kitz Sct Corporation | Slide valve |
| CN201992104U (en) * | 2011-04-14 | 2011-09-28 | 张伟 | Sliding plate valve |
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| Publication number | Publication date |
|---|---|
| CN102155548A (en) | 2011-08-17 |
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Free format text: FORMER OWNER: WANG GUANNAN Effective date: 20140915 Owner name: CHONGQING SILAIDI VALVE CO., LTD. Free format text: FORMER OWNER: ZHANG WEI Effective date: 20140915 |
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Free format text: CORRECT: ADDRESS; FROM: 518055 SHENZHEN, GUANGDONG PROVINCE TO: 408400 NANCHUAN, CHONGQING |
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Effective date of registration: 20140915 Address after: 408400 Chongqing Nanchuan District West Street Office of Xinqiao neighborhood park standard plant building No. 2 first floor Patentee after: Chongqing Laidi Valve Co. Ltd. Address before: Nanshan District Xili Town, Shenzhen city Guangdong province 518055 Southland Belvedere K503 Patentee before: Zhang Wei Patentee before: Wang Guannan |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20200414 |