CN105673866A - Leak-tightness anti-corrosion stop valve - Google Patents
Leak-tightness anti-corrosion stop valve Download PDFInfo
- Publication number
- CN105673866A CN105673866A CN201610227083.7A CN201610227083A CN105673866A CN 105673866 A CN105673866 A CN 105673866A CN 201610227083 A CN201610227083 A CN 201610227083A CN 105673866 A CN105673866 A CN 105673866A
- Authority
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- China
- Prior art keywords
- spiral groove
- valve
- corrosion
- stop valve
- external spiral
- 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.)
- Pending
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000007797 corrosion Effects 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000460 chlorine Substances 0.000 abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract 1
- -1 polytetrafluoroethylene Polymers 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000001997 corrosion-resisting alloy Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
- B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a leak-tightness anti-corrosion stop valve. The leak-tightness anti-corrosion stop valve comprises a valve body coated with an anti-corrosion material, a valve deck, a valve clack and a valve rod, wherein a 65-75-degree conical surface is machined at the end of the valve clack, and a conical surface sealing face matched with the conical surface at the end of the valve clack is arranged in an inner cavity of the valve body; a plurality of inner holes are evenly distributed on the plane of the end of the valve clack, and the opening end of each inner hole is chamfered; dovetail grooves are evenly distributed on the conical surface of the end of the valve clack, the inner cavity of the valve body and the surface of the valve rod and filled with the anti-corrosion material, so that an anti-corrosion material layer and a metal base body are integrated, and the anti-corrosion material is polytetrafluoroethylene resin. The sealing structure is reasonable, damage to the sealing face does not occur easily even under the special working condition that a medium contains particular impurities, safety and reliability are realized, and the requirement for long-term conveyance of highly corrosive media such as wet chlorine can be met. Furthermore, the leak-tightness anti-corrosion stop valve has a filtering function, and a valve element can not be damaged easily.
Description
Technical field
The present invention relates to a kind of valve, it is a kind of No leakage anti-corrosion stop valve specifically.
Background technology
At present, known common valve is made up of major partss such as valve body, valve gap, flap, valve rod, nuts, and each component materials is general not corrosion-resistant. This type of common valve, once for carrying deep-etching, the poisonous mediums such as chlorine alkali, extremely easily corrodes and leak with medium contact part. Thus endanger surrounding enviroment and personnel safety.
In recent years, according to the particular requirement of leaking medium poisonous, easy conveying, for some defects that existing valve uses, now disclose many technical schemes about the valve special for chlorine preventing chlorine leakage in the art. wherein, Su Zhong valve for chemical industry factory of Nantong City has applied for " Fluoroplastic full-lining stop valve for chlor-alkali " (number of patent application is 98223898.3) by name on April 30th, 1998, its technical scheme is mainly: a kind of Fluoroplastic full-lining stop valve for chlor-alkali on chlorine alkali pipeline, comprise: valve body, valve gap, flap always becomes, transmission rod, handwheel, flange sealing surface in valve body, two ends flange sealing surface and body cavity on the surface soaking cover tetrafluoroethylene, and it is linked to be entirety, form full lining, full lining and matrix (metallic object) are sintered to one, transmission rod and flap are set to split type. when opening/shutting valve, transmission rod rotarily drives flap and moves up and down, it is ensured that without adhesive wear between trim, it is ensured that tight seal, not leaking, anti-deep-etching, it may also be useful to safe and reliable, the life-span is long. but, this technical scheme in actual applications, owing to it still adopts plane sealing structure, is closed containing more easily damaging sealing by pressure under the special operation conditions such as granule foreign in delivery medium, is caused seal failure and leak. further, existing valve does not have filtering function, and spool easily damages.
Summary of the invention
In order to overcome existing wet chlorine valve adopt plane sealing structure special operation condition lower sealing surface easily damage and occur leak deficiency, the present invention provides a kind of No leakage anti-corrosion stop valve, this valve can not only meet the conveying requirement of the strong corrosive mediums such as wet chlorine for a long time, and also not easy damaged trim is contained under the special operation conditions such as granule foreign at medium, it may also be useful to more safe and reliable; The present invention simultaneously also has filtering function, protection filter core.
Technical solution of the present invention is as follows:
No leakage anti-corrosion stop valve, comprise be covered with corrosion resistant material valve body, valve gap, flap, valve rod, described flap end is processed with 65～75 ° of conical surfaces, the conical surface seal face that described body cavity is equipped with the flap end conical surface mates mutually; Described flap end plane is provided with some equally distributed interior holes, the mouth chamfer in described interior hole;
Described valve body has entrance, described entrance is connected with strainer tube and internal diameter is greater than the Link Port of strainer tube external diameter, described strainer tube is arranged in the inner chamber of Link Port, described strainer tube has the pipe body of outer end shutoff, described tube wall has the external spiral groove leading cylinder with Guan Tiwei, described inboard wall of tube body has the inner spiral groove leading cylinder with Guan Tiwei, described external spiral groove and inner spiral groove rotation direction are contrary, and the groove depth of described external spiral groove and the groove depth sum of inner spiral groove are greater than the wall thickness of pipe body to form the filter opening of rhombus on pipe body.
Described external spiral groove is single head spiral slot further, and described inner spiral groove is multi-head spiral groove.
Described external spiral groove and inner spiral groove are Variable lead groove further, and the helical pitch of Guan Tixu crooked position is greater than the helical pitch at position not needing to bend.
The revolver profile of described external spiral groove normal section profile and right skeletal lines are all to rolling tiltedly further.
Described external spiral groove normal section profile becomes wide gradually along the width of rebate of the radial direction external spiral groove from inside to outside of pipe body further.
Further: the described flap end conical surface, body cavity, stem surface are provided with equally distributed dovetail-indent, and corrosion resistant material is filled in described dovetail-indent, and etch resistant material layer is integrally formed with metallic matrix.
The present invention compared with prior art has the following advantages:
1, more reasonable structure, more adapts to the medium transport under special operation condition. Conical surface seal is compared with common flat seal, relative with the damage of medium throw out less by solid particulate, more can adapt to contain sometimes in wet chlorine course of conveying the requirement of the special operation conditions such as granule foreign.
2, actual effect is more corrosion-resistant, more reliable. Being provided with multiple equally distributed interior hole at flap end plane, the mouth end in interior hole is 45 °～60 ° angles; In the flap end conical surface, body cavity, stem surface, equally distributed dovetail-indent is set, control dovetail-indent bottom land width≤2.5mm, width of rebate≤2mm, groove depth≤1.5mm, corrosion resistant material is filled in this some holes and in groove, neither affects the bulk strength of flap, valve rod, corrosion resistant material can be made again to be integrally formed with metallic matrix completely, do not loosen when ensureing that flap, valve rod work, play layer, bulge, the better effects if of corrosion-resistant, antiscour. Valve body material adopts corrosion resisting alloy steel to make according to chemical industry for making chlorine and alkali industrial and mineral particular requirement, solves common valve housing and often bores a hole the difficult problem of chlorine leakage.
And, described valve body entrance is connected with strainer tube and internal diameter is greater than the Link Port of strainer tube external diameter, current can be filtered, spool not easily damages, and described strainer tube has the following advantages relative to common strainer tube: (1) strainer tube has external spiral groove, and the current outside pipe are under pressure along external spiral groove helicoidal flow, impurity is distributed outside tube wall more even, the utilization of filter opening and loss are more even, and add the number of times of current through filter opening, it is to increase filtration efficiency; (2) current inside and outside strainer tube flow along inner spiral groove and external spiral groove respectively, collides at filter opening place each other such that it is able to the impurity impact being blocked in outside filter opening fallen, reach the object of strainer tube self-stip, reduce cleaning cost;(3) current in strainer tube form the uniform current of flow velocity along inner spiral groove helicoidal flow, water one through filtering enters strainer tube and flows along inner spiral groove by the guiding of current in inner spiral groove immediately, reach the effect of steady in-pipe flow, and the structure of external spiral groove to be single head spiral slot, inner spiral groove be multi-head spiral groove contribute to will through the water-dispersion filtered to, in different inner spiral grooves, reduce further the water just entered in pipe body to the impact of the interior water of pipe; (4) strainer tube has inner spiral groove and external spiral groove, contribute to the bending of pipe body, and in external spiral groove, electric-heating-wire-heating can be entered by dish when bending, reduce further bending camber, on the other hand, the helical pitch of Guan Tixu crooked position is greater than the helical pitch at position not needing to bend, and reduces the bending possibility causing pipe body to break; (5) external spiral groove and inner spiral groove are Variable lead groove, can realize the function of flow velocity inside and outside controlled filter pipe different positions by setting the helical pitch of different sites; (6) the revolver profile of external spiral groove normal section profile and right skeletal lines are all to rolling tiltedly, ensure to make cutter vehicle all become acute angle to avoid collapse cutter with external spiral groove two side by the direction on inside base, outside with lathe tool traveling direction during external spiral groove intersection to inner spiral groove when turning inner spiral groove by selection turning direction, reduce difficulty of processing; (7) width of rebate of strainer tube external spiral groove becomes wide gradually along the radial direction from inside to outside of pipe body, contribute to being filled in external spiral groove by fashion of extrusion by seal gum in the course of processing, seal gum bottom external spiral groove is filled finer and close, further avoid and occur collapsing cutter at inner spiral groove and external spiral groove intersection when turning inner spiral groove.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram;
Fig. 2 is I part partial enlargement figure in Fig. 1;
Fig. 3 is the structural representation of strainer tube, does not comprise occluding member;
Fig. 4 is the sectional structure schematic diagram of strainer tube, does not comprise occluding member;
Fig. 5 be processing inner spiral groove time along Fig. 3 N-N to schematic partial cross-sectional view.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
No leakage anti-corrosion stop valve as shown in Figure 1, comprise be covered with corrosion resistant material valve body 1, valve gap 2, flap 3, valve rod 4, described flap 3 end is processed with 65～75 ° of conical surfaces, the conical surface seal face that valve body 1 inner chamber is equipped with the flap 3 end conical surface mates mutually; Flap 3 end plane is provided with some equally distributed interior holes, the mouth chamfer in interior hole; The flap 3 end conical surface, valve body 1 inner chamber, valve rod 4 surface are provided with equally distributed dovetail-indent 5, and corrosion resistant material is filled in dovetail-indent 5, and etch resistant material layer is integrally formed with metallic matrix; In the present embodiment, dovetail-indent 5 bottom land width≤2.5mm, width of rebate≤2mm, groove depth≤1.5mm; Flap 3 becomes for entirety forging with valve rod 4; Corrosion resistant material is teflon resin; Valve gap 2 and valve body 1 tongue-and-groove formula are tightly connected; Valve body 1 is non-corrosive metal steel.
Described valve body 1 has entrance, and described entrance is connected with strainer tube and internal diameter is greater than the Link Port of strainer tube external diameter, and described strainer tube is arranged in the inner chamber of Link Port.
Such as Fig. 3 and 4, described strainer tube has the pipe body of outer end shutoff, described tube wall has the external spiral groove leading cylinder with Guan Tiwei, described inboard wall of tube body has the inner spiral groove leading cylinder with Guan Tiwei, described external spiral groove and inner spiral groove rotation direction are contrary, and the groove depth of described external spiral groove and the groove depth sum of inner spiral groove are greater than the wall thickness of pipe body to form the filter opening of rhombus on pipe body.
Described external spiral groove is single head spiral slot, and described inner spiral groove is three spiral slots;
Described external spiral groove and inner spiral groove are Variable lead groove, and the helical pitch of Guan Tixu crooked position is greater than the helical pitch at position not needing to bend.
Such as Fig. 5, the revolver profile of described external spiral groove normal section profile and right skeletal lines are all to rolling tiltedly and become wide gradually along the width of rebate of the radial direction external spiral groove from inside to outside of pipe body.
The working method of described strainer tube comprises the steps:
(A) car tube wall rough turn, smart;
(B) car external spiral groove rough turn, smart;
(C) car inboard wall of tube body rough turn, smart;
(D) in external spiral groove, seal gum is poured into, such as Fig. 5, owing to the width of rebate of external spiral groove becomes wide gradually along the radial direction from inside to outside of pipe body, can seal gum be filled in external spiral groove by fashion of extrusion and make the filling of the seal gum bottom external spiral groove finer and close, avoid in subsequent handling and occur collapsing cutter at inner spiral groove and external spiral groove intersection when turning inner spiral groove; It is cooled to seal gum to solidify;
(E) car inner spiral groove rough turn, smart: owing to revolver profile and the right skeletal lines of external spiral groove normal section profile all rolls tiltedly to same, therefore can select by Fig. 3 turning direction from left to right when turning inner spiral groove, cutter vehicle can be made all to become acute angle with external spiral groove two side by the direction on inside base, outside with lathe tool traveling direction during external spiral groove intersection to inner spiral groove, thus avoid collapsing cutter, reduce difficulty of processing; Further, in external spiral groove, it is filled with seal gum, largely avoid the vibration that lathe tool causes because of chip breaking at inner spiral groove and external spiral groove intersection, further avoid the generation collapsing cutter phenomenon, and ensure that the roughness of inner spiral groove cell wall;
(F) in external spiral groove, it is wound around nichrome wire to be heated by strainer tube, under the high temperature conditions cooling tube is bent to desired shape.
Claims (6)
1. No leakage anti-corrosion stop valve, comprise be covered with corrosion resistant material valve body (1), valve gap (2), flap (3), valve rod (4), it is characterized in that: described flap (3) end is processed with 65～75 ° of conical surfaces, the conical surface seal face that described valve body (1) inner chamber is equipped with flap (3) the end conical surface mates mutually; Described flap (3) end plane is provided with some equally distributed interior holes, the mouth chamfer in described interior hole;
Described valve body (1) has entrance, described entrance is connected with strainer tube and internal diameter is greater than the Link Port of strainer tube external diameter, described strainer tube is arranged in the inner chamber of Link Port, described strainer tube has the pipe body of outer end shutoff, described tube wall has the external spiral groove leading cylinder with Guan Tiwei, described inboard wall of tube body has the inner spiral groove leading cylinder with Guan Tiwei, described external spiral groove and inner spiral groove rotation direction are contrary, and the groove depth of described external spiral groove and the groove depth sum of inner spiral groove are greater than the wall thickness of pipe body to form the filter opening of rhombus on pipe body.
2. No leakage anti-corrosion stop valve as claimed in claim 1, it is characterised in that: described external spiral groove is single head spiral slot, and described inner spiral groove is multi-head spiral groove.
3. No leakage anti-corrosion stop valve as claimed in claim 1, it is characterised in that: described external spiral groove and inner spiral groove are Variable lead groove, and the helical pitch of Guan Tixu crooked position is greater than the helical pitch at position not needing to bend.
4. No leakage anti-corrosion stop valve as claimed in claim 1, it is characterised in that: the revolver profile of described external spiral groove normal section profile and right skeletal lines are all to rolling tiltedly.
5. No leakage anti-corrosion stop valve as claimed in claim 1, it is characterised in that: described external spiral groove normal section profile becomes wide gradually along the width of rebate of the radial direction external spiral groove from inside to outside of pipe body.
6. according to the arbitrary described No leakage anti-corrosion stop valve of claim 1 to 5, it is characterized in that: described flap (3) the end conical surface, valve body (1) inner chamber, valve rod (4) surface are provided with equally distributed dovetail-indent (5), corrosion resistant material is filled in described dovetail-indent (5), and etch resistant material layer is integrally formed with metallic matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610227083.7A CN105673866A (en) | 2016-04-13 | 2016-04-13 | Leak-tightness anti-corrosion stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610227083.7A CN105673866A (en) | 2016-04-13 | 2016-04-13 | Leak-tightness anti-corrosion stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673866A true CN105673866A (en) | 2016-06-15 |
Family
ID=56308978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610227083.7A Pending CN105673866A (en) | 2016-04-13 | 2016-04-13 | Leak-tightness anti-corrosion stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673866A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2019264C1 (en) * | 1991-06-03 | 1994-09-15 | Кулемин Владимир Васильевич | Filter |
| CN2210295Y (en) * | 1994-12-07 | 1995-10-18 | 沈阳市良工阀门厂 | Filtration type hand operating adjusting valve |
| CN1291114A (en) * | 1998-02-18 | 2001-04-11 | 哈里·尼尔森 | Rotating filter |
| CN102032355A (en) * | 2010-12-14 | 2011-04-27 | 江苏江华阀业有限公司 | Zero-leakage tapered sealing wet chlorine special valve |
| CN202037851U (en) * | 2011-04-18 | 2011-11-16 | 洪昌喜 | Filter for plastic extruding machine |
| CN103671976A (en) * | 2012-09-02 | 2014-03-26 | 江苏海达船用阀业有限公司 | Leakage-free and anti-corrosion stop valve |
| CN203656469U (en) * | 2013-11-15 | 2014-06-18 | 浙江鑫牛管业有限公司 | Spiral air change type pipe fitting |
-
2016
- 2016-04-13 CN CN201610227083.7A patent/CN105673866A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2019264C1 (en) * | 1991-06-03 | 1994-09-15 | Кулемин Владимир Васильевич | Filter |
| CN2210295Y (en) * | 1994-12-07 | 1995-10-18 | 沈阳市良工阀门厂 | Filtration type hand operating adjusting valve |
| CN1291114A (en) * | 1998-02-18 | 2001-04-11 | 哈里·尼尔森 | Rotating filter |
| CN102032355A (en) * | 2010-12-14 | 2011-04-27 | 江苏江华阀业有限公司 | Zero-leakage tapered sealing wet chlorine special valve |
| CN202037851U (en) * | 2011-04-18 | 2011-11-16 | 洪昌喜 | Filter for plastic extruding machine |
| CN103671976A (en) * | 2012-09-02 | 2014-03-26 | 江苏海达船用阀业有限公司 | Leakage-free and anti-corrosion stop valve |
| CN203656469U (en) * | 2013-11-15 | 2014-06-18 | 浙江鑫牛管业有限公司 | Spiral air change type pipe fitting |
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Application publication date: 20160615 |
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