WO2018133225A1 - Special chlorine valve - Google Patents
Special chlorine valve Download PDFInfo
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- WO2018133225A1 WO2018133225A1 PCT/CN2017/081191 CN2017081191W WO2018133225A1 WO 2018133225 A1 WO2018133225 A1 WO 2018133225A1 CN 2017081191 W CN2017081191 W CN 2017081191W WO 2018133225 A1 WO2018133225 A1 WO 2018133225A1
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- valve
- disposed
- stem
- flap
- cover
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- 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
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- 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
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- 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
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- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
Definitions
- the invention relates to the technical field of manufacturing special valves, in particular to a special valve for chlorine gas.
- the present invention provides a special chlorine gas special valve.
- the invention comprises a valve body, a valve cover, a valve seat, a valve flap and a valve stem, wherein the valve seat is fixed in the valve body, a sealing end surface of the valve flap is closely matched with the valve seat, and the valve body comprises an inlet And an outlet port, wherein the inlet and outlet are respectively provided with an interface flange, and a connection flange is disposed at the middle connection port, the inlet and the outlet are located on the same axis, and the middle connection port is located at the inlet a vertical direction of the outlet direction, the valve cover is sealed and fixed to the connecting flange by a plurality of bolts and nuts; a through hole is disposed in the center of the valve cover, and the valve stem passes through the through hole, the valve stem One end of the valve stem is connected to the valve flap, and the other end of the valve stem is disposed outside the valve body; a packing sealing mechanism is arranged between the valve stem and the valve cover, and the outer top end of the valve stem is connected to the hand wheel and the
- the tapered surface of the valve flap is in contact with the sealing member of the polytetrafluoroethylene resin
- the valve stem of the valve body is provided with a reverse tapered sealing protrusion facing away from the valve flap, and a cone notch corresponding to the inverted tapered sealing protrusion is disposed at a center of the inner end surface of the valve cover.
- the inverted tapered sealing protrusion closely matches the tapered notch.
- the hand wheel When the invention works, the hand wheel is rotated clockwise, and the valve stem is driven to close the valve flap connected to the valve stem to the sealing surface of the valve seat. After the valve is completely matched, the valve is closed; the hand wheel is rotated counterclockwise to drive the valve stem to connect the valve to the valve.
- the valve flap on the rod leaves the seat sealing surface and the valve opens. When opened to a quarter of the valve diameter, the valve is fully open.
- the valve seat and the disc are double-sealed with a flat surface and a tapered surface. The taper surface is in contact at the beginning. After a period of use, the plastic is compression-molded (deformed) with the closing force, and the plane of the end of the valve flap begins.
- the sealing performance is good, the use is safe and reliable, and constitutes a double safety seal. Furthermore, an inverted sealing structure is adopted between the valve stem and the valve cover, which further prevents leakage of material in the valve body and further ensures the sealing effect.
- the first step surface of the lower layer is disposed on the outer end surface of the middle connecting port of the valve body, and the inner end surface of the valve cover is provided with a convex second step surface, and the first and second step surfaces cooperate with each other.
- a PTFE gasket is disposed between the first and second step faces.
- the connecting portion of the valve body and the valve cover of the invention adopts a guiding structure, and the connection manner of the PTFE fluoroplastic sealing gasket is built in, thereby effectively preventing the looseness of the middle flange bolt caused by the fluctuation of the pipeline pressure, thereby causing the possibility of leakage of the middle flange, because the PTFE has Very strong plastic deformation compensation ability.
- the packing sealing mechanism of the invention comprises a stuffing box, a V-type fluoroplastic filler, an O-type fluoroplastic filler, a packing gland, and one O-type fluoroplastic filler is arranged at the bottom of the stuffing box, and a plurality of O-type fluoroplastic fillers are arranged above
- the V-type fluoroplastic filler having an opening facing the valve body is pressed with a layer of the O-type fluoroplastic filler above the uppermost V-shaped fluoroplastic filler, and the packing gland is pressed over the O-type and V-type fluoroplastic filler.
- the invention adopts multi-stage V-shaped O-shaped fluoroplastic filler, and forms a combined sealing pair from the upper, middle and lower sides, reliably ensures that the medium does not leak, and the filler is maintenance-free for life.
- the valve flap of the present invention includes a valve body, a flap cover, and an inner end of the valve stem connected to the flap cover, and the flap cover is detachably fixedly connected to the valve body; After the valve disc is worn, only the valve body can be replaced, and the replacement and maintenance are convenient.
- valve body and the valve cover of the invention are all formed by integral casting or forging (LF2) of LCB low temperature steel; the low temperature steel of LCB is suitable for operation in a low temperature environment, mainly at minus 46 °C.
- LF2 integral casting or forging
- Figure 1 is a schematic view of the structure of the present invention.
- the special chlorine gas special valve includes a valve body 1, a valve cover 7, a valve seat 2, a valve flap 3, a valve stem 5, and the valve seat 2 is fixed in the valve body 1, and the sealing end face of the valve flap 3 is
- the valve seat 2 is closely matched, and the valve body 1 includes an inlet 12, an outlet 13, and a middle connecting port 14.
- the interface flange 15 is respectively disposed at the inlet and outlet 12, and the connecting flange 16 is disposed at the central connecting port 14, and the inlet and the outlet are provided.
- valve stem 5 passes through the through hole 17, one end of the valve stem 5 is connected to the valve flap 3, and the other end of the valve stem 5 is disposed outside the valve body 1; a packing sealing mechanism 18 is disposed between the valve stem 5 and the valve cover 7, the valve stem
- the outer top end of the 5 is connected to the hand wheel 11, the valve stem 5 outside the valve body 1 is provided with a thread, the valve stem guide bracket 19 is integrally disposed on the valve cover 7, and the fixed sleeve 20 is fixed at the top end of the valve stem guide bracket 19, and the fixed sleeve 20 is fixed.
- the valve rod 5 is internally fixedly coupled with the valve stem nut 10, and the valve stem 5 is threadedly coupled with the valve stem nut 10; the end edge of the valve disc 3 and the valve seat 2 is set to
- the surface 21 is provided with a ring-shaped shaped groove 22 on the end surface of the valve seat 2 which is in contact with the valve flap 3, and a polytetrafluoroethylene resin sealing body 23 is disposed in the shaped groove 22, and the tapered surface 21 of the valve flap 3 and the polytetrafluoroethylene
- the resin sealing body 23 is in contact with the valve;
- the valve stem 5 in the valve body 1 is provided with a reverse tapered sealing projection 24 facing away from the valve flap 3, and is disposed at the center of the inner end surface of the valve cover 7 and the inverted tapered sealing projection 24 Corresponding tapered notches 25, the inverted tapered sealing projections 24 are in close engagement with the tapered notches 25.
- a first step surface 26 of the lower layer is disposed on the outer end surface of the central connecting port of the valve body 1, and the inner end surface of the valve cover 7 is provided with a convex second step surface 27, and the first and second step surfaces 26 and 27 cooperate with each other.
- a PTFE gasket 6 is disposed between the first and second step faces 26, 27.
- the packing sealing mechanism 18 comprises a stuffing box 28, a V-type fluoroplastic filler 29, an O-type fluoroplastic filler 30, a packing gland 9, an O-type fluoroplastic filler 30 disposed at the bottom of the stuffing box 28, in the O-type fluoroplastic
- a plurality of V-shaped fluoroplastic fillers 29 having openings facing the valve body are disposed above the filler 30, and an O-type fluoroplastic filler 30 is pressed over the uppermost V-shaped fluoroplastic filler 29, and the packing gland 9 is pressed against the O-type and V-type fluoroplastics. Above the fillers 30, 29.
- valve flap 3 includes a valve body 31, a flap cover 4, and an inner end of the valve stem 5 is coupled to the flap cover 4, and the flap cover 4 is detachably fixedly coupled to the flap body 31.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
本发明涉及一种特种阀门的制造技术领域，特别涉及一种氯气专用阀。The invention relates to the technical field of manufacturing special valves, in particular to a special valve for chlorine gas.
以往，氯气管线阀门，通常材料为普通碳素钢铸件壳体，材料强度差，密封结构单一、性能一般的普通阀门。普通阀门无论从材料还是结构上都不具备目前氯气工况环境的影响而正常使用。一方面这种普通阀门内密封和外密封部位的密封性能不好，并不能很好地阻止介质泄漏；另一方面在低温、腐蚀、恶劣的使用条件下，往往壳体易断裂，尤其是法兰颈部，断裂产生泄漏，使用寿命短，不能满足长期有效输送介质的特殊要求，而一旦泄漏出来，会对周边环境和人身安全带来不小的危害，尤其是现在的化工企业园区，一旦泄露，将会殃及整个园区的企业。In the past, chlorine gas pipeline valves were usually made of ordinary carbon steel casting shells, with poor material strength, single sealing structure and general performance. Ordinary valves are normally used regardless of the material or structure of the current chlorine environment. On the one hand, the sealing performance of the inner valve seal and the outer seal portion of the ordinary valve is not good, and the medium leakage is not well prevented; on the other hand, under low temperature, corrosion, and harsh use conditions, the shell is often broken, especially the method. Lan neck, breakage produces leakage, short service life, can not meet the special requirements of long-term effective transport medium, and once leaked, it will bring harm to the surrounding environment and personal safety, especially in the current chemical enterprise park. The leak will affect the entire campus.
发明内容Summary of the invention
为了克服上述现有阀门存在的问题，本发明提供一种特种氯气专用阀。In order to overcome the problems of the above existing valves, the present invention provides a special chlorine gas special valve.
本发明包括阀体、阀盖、阀座、阀瓣、阀杆，所述阀座固定在所述阀体内，所述阀瓣的密封端面与所述阀座紧密配合，所述阀体包括进口、出口、中部连接口，所述进、出口处分别设置接口法兰，在所述中部连接口处设置连接法兰，所述进、出口位于同一轴线上，所述中部连接口位于所述进、出口方向的垂直方向，所述阀盖通过多个螺栓、螺母与所述连接法兰密封固定；所述阀盖中心设置通孔，所述阀杆穿过所述通孔，所述阀杆的一端连接所述阀瓣，所述阀杆的另一端设置在所述阀体外；在所述阀杆与所述阀盖之间设置填料密封机构，阀杆的外顶端连接手轮，阀体外的所述阀杆上设置螺纹，在阀盖上一体设置阀杆导向支架，所述阀杆导向支架顶端设置固定套管，所述固定套管内固定配合阀杆螺母，所述阀杆通过螺纹与所述阀杆螺母配合连接；所述阀瓣与所述阀座配合的端部边缘设置成锥面，在所述阀座的与阀瓣接触的端面上设置一圈异形槽，在所述异形槽内设置聚四氟乙烯树脂密封体，所述阀瓣的锥面与所述聚四氟乙烯树脂密封体接触 配合；阀体内的所述阀杆上设置一背向阀瓣的倒锥形密封凸起，在所述阀盖的内端面中心设置与所述倒锥形密封凸起相互对应的锥面缺口，所述倒锥形密封凸起与所述锥面缺口紧密配合。The invention comprises a valve body, a valve cover, a valve seat, a valve flap and a valve stem, wherein the valve seat is fixed in the valve body, a sealing end surface of the valve flap is closely matched with the valve seat, and the valve body comprises an inlet And an outlet port, wherein the inlet and outlet are respectively provided with an interface flange, and a connection flange is disposed at the middle connection port, the inlet and the outlet are located on the same axis, and the middle connection port is located at the inlet a vertical direction of the outlet direction, the valve cover is sealed and fixed to the connecting flange by a plurality of bolts and nuts; a through hole is disposed in the center of the valve cover, and the valve stem passes through the through hole, the valve stem One end of the valve stem is connected to the valve flap, and the other end of the valve stem is disposed outside the valve body; a packing sealing mechanism is arranged between the valve stem and the valve cover, and the outer top end of the valve stem is connected to the hand wheel and the valve body The valve stem is provided with a thread, a valve stem guiding bracket is integrally disposed on the valve cover, and a fixing sleeve is disposed at a top end of the valve stem guiding bracket, and the fixing sleeve is fixedly fitted with a valve stem nut, and the valve stem is threaded and The stem nut is matedly connected; An end edge of the valve that is engaged with the valve seat is disposed as a tapered surface, and a ring-shaped shaped groove is disposed on an end surface of the valve seat that is in contact with the valve flap, and a polytetrafluoroethylene resin sealing body is disposed in the special-shaped groove. The tapered surface of the valve flap is in contact with the sealing member of the polytetrafluoroethylene resin The valve stem of the valve body is provided with a reverse tapered sealing protrusion facing away from the valve flap, and a cone notch corresponding to the inverted tapered sealing protrusion is disposed at a center of the inner end surface of the valve cover. The inverted tapered sealing protrusion closely matches the tapered notch.
本发明工作时，顺时针转动手轮，带动阀杆使连接在阀杆上的阀瓣贴近阀座密封面，完全吻合后，阀门关严；逆时针转动手轮，带动阀杆使连接在阀杆上的阀瓣离开阀座密封面，阀门打开，当打开到阀门通径四分之一时，阀门已经完全开启。阀座与阀瓣采用平面和锥面型的双重密封结构，刚开始使用是锥面部分接触，使用一段时间后，随着关闭力使塑料压缩成型(变形)，阀瓣端部的平面也开始接触吻合阀座密封面，达到双重密封的效果。密封性能好，使用安全可靠，构成了双重保险密封。再有，阀杆与阀盖之间采用倒密封结构，其进一步防止阀体内物料的泄漏，进一步保障了密封效果。When the invention works, the hand wheel is rotated clockwise, and the valve stem is driven to close the valve flap connected to the valve stem to the sealing surface of the valve seat. After the valve is completely matched, the valve is closed; the hand wheel is rotated counterclockwise to drive the valve stem to connect the valve to the valve. The valve flap on the rod leaves the seat sealing surface and the valve opens. When opened to a quarter of the valve diameter, the valve is fully open. The valve seat and the disc are double-sealed with a flat surface and a tapered surface. The taper surface is in contact at the beginning. After a period of use, the plastic is compression-molded (deformed) with the closing force, and the plane of the end of the valve flap begins. Contact the sealing surface of the anastomosis seat to achieve a double seal. The sealing performance is good, the use is safe and reliable, and constitutes a double safety seal. Furthermore, an inverted sealing structure is adopted between the valve stem and the valve cover, which further prevents leakage of material in the valve body and further ensures the sealing effect.
本发明在所述阀体的中部连接口外侧端面设置下层的第一台阶面，所述阀盖的内侧端面设置凸起的第二台阶面，所述第一、第二台阶面相互配合，在所述第一、第二台阶面之间设置PTFE密封垫片。The first step surface of the lower layer is disposed on the outer end surface of the middle connecting port of the valve body, and the inner end surface of the valve cover is provided with a convex second step surface, and the first and second step surfaces cooperate with each other. A PTFE gasket is disposed between the first and second step faces.
本发明阀体与阀盖的连接处采用导向结构，内置PTFE氟塑料密封垫片的连接方式，有效防止管道压力波动引起的中法兰螺栓松动，造成中法兰泄漏的可能，因为，PTFE具有很强的塑性变形补偿能力。The connecting portion of the valve body and the valve cover of the invention adopts a guiding structure, and the connection manner of the PTFE fluoroplastic sealing gasket is built in, thereby effectively preventing the looseness of the middle flange bolt caused by the fluctuation of the pipeline pressure, thereby causing the possibility of leakage of the middle flange, because the PTFE has Very strong plastic deformation compensation ability.
本发明所述填料密封机构包括填料函、V型氟塑料填料、O型氟塑料填料、填料压盖，一道所述O型氟塑料填料设置在填料函底部，在O型氟塑料填料上方设置若干开口朝向阀体的V型氟塑料填料，在最上一道V型氟塑料填料上方压一层所述O型氟塑料填料，填料压盖压在所述O型、V型氟塑料填料上方。The packing sealing mechanism of the invention comprises a stuffing box, a V-type fluoroplastic filler, an O-type fluoroplastic filler, a packing gland, and one O-type fluoroplastic filler is arranged at the bottom of the stuffing box, and a plurality of O-type fluoroplastic fillers are arranged above The V-type fluoroplastic filler having an opening facing the valve body is pressed with a layer of the O-type fluoroplastic filler above the uppermost V-shaped fluoroplastic filler, and the packing gland is pressed over the O-type and V-type fluoroplastic filler.
本发明采用多级V型O形氟塑料填料，由上、中、下形成组合密封副，可靠保证介质不外漏，填料终身免维护。The invention adopts multi-stage V-shaped O-shaped fluoroplastic filler, and forms a combined sealing pair from the upper, middle and lower sides, reliably ensures that the medium does not leak, and the filler is maintenance-free for life.
本发明所述阀瓣包括阀瓣主体、阀瓣盖、阀杆的内端连接在所述阀瓣盖上，所述阀瓣盖与所述阀瓣主体可拆卸式固定连接；这种设置在阀瓣磨损后，只需更换阀瓣主体即可，更换维修方便。The valve flap of the present invention includes a valve body, a flap cover, and an inner end of the valve stem connected to the flap cover, and the flap cover is detachably fixedly connected to the valve body; After the valve disc is worn, only the valve body can be replaced, and the replacement and maintenance are convenient.
本发明阀体、阀盖均采用LCB低温钢整体铸造或锻造(LF2)而成；LCB低温钢比较适合在低温环境下运行，主要在零下46℃下。 The valve body and the valve cover of the invention are all formed by integral casting or forging (LF2) of LCB low temperature steel; the low temperature steel of LCB is suitable for operation in a low temperature environment, mainly at minus 46 °C.
图1为本发明的一种结构示意图。Figure 1 is a schematic view of the structure of the present invention.
如图1所示，本特种氯气专用阀，包括阀体1、阀盖7、阀座2、阀瓣3、阀杆5，阀座2固定在阀体1内，阀瓣3的密封端面与阀座2紧密配合，阀体1包括进口12、出口13、中部连接口14，进、出口12、13处分别设置接口法兰15，在中部连接口14处设置连接法兰16，进、出口12、13位于同一轴线上，中部连接口14位于进、出口12、13方向的垂直方向，阀盖7通过多个螺栓、螺母与连接法兰16密封固定；阀盖7中心设置通孔17，阀杆5穿过通孔17，阀杆5的一端连接阀瓣3，阀杆5的另一端设置在阀体1外；在阀杆5与阀盖7之间设置填料密封机构18，阀杆5的外顶端连接手轮11，阀体1外的阀杆5上设置螺纹，在阀盖7上一体设置阀杆导向支架19，阀杆导向支架19顶端设置固定套管20，固定套管20内固定配合阀杆螺母10，阀杆5通过螺纹与阀杆螺母10配合连接；阀瓣3与阀座2配合的端部边缘设置成锥面21，在阀座2的与阀瓣3接触的端面上设置一圈异形槽22，在异形槽22内设置聚四氟乙烯树脂密封体23，阀瓣3的锥面21与聚四氟乙烯树脂密封体23接触配合；阀体1内的阀杆5上设置一背向阀瓣3的倒锥形密封凸起24，在阀盖7的内端面中心设置与倒锥形密封凸起24相互对应的锥面缺口25，倒锥形密封凸起24与锥面缺口25紧密配合。As shown in Fig. 1, the special chlorine gas special valve includes a valve body 1, a valve cover 7, a
进一步的，在阀体1的中部连接口外侧端面设置下层的第一台阶面26，阀盖7的内侧端面设置凸起的第二台阶面27，第一、第二台阶面26、27相互配合，在第一、第二台阶面26、27之间设置PTFE密封垫片6。Further, a
优选的，填料密封机构18包括填料函28、V型氟塑料填料29、O型氟塑料填料30、填料压盖9，一道O型氟塑料填料30设置在填料函28底部，在O型氟塑料填料30上方设置若干开口朝向阀体的V型氟塑料填料29，在最上一道V型氟塑料填料29上方压一层O型氟塑料填料30，填料压盖9压在O型、V型氟塑料填料30、29上方。Preferably, the
进一步的，阀瓣3包括阀瓣主体31、阀瓣盖4、阀杆5的内端连接在阀瓣盖4上，阀瓣盖4与阀瓣主体31可拆卸式固定连接。
Further, the valve flap 3 includes a
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710047149.9 | 2017-01-22 | ||
| CN201710047149.9A CN106763833A (en) | 2017-01-22 | 2017-01-22 | Special valve for special chlorine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018133225A1 true WO2018133225A1 (en) | 2018-07-26 |
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ID=58945297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2017/081191 Ceased WO2018133225A1 (en) | 2017-01-22 | 2017-04-20 | Special chlorine valve |
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| Country | Link |
|---|---|
| CN (1) | CN106763833A (en) |
| WO (1) | WO2018133225A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506503B (en) * | 2018-04-08 | 2019-02-22 | 江苏圣泰阀门有限公司 | Core shut-off valve |
| CN108825829B (en) * | 2018-07-18 | 2021-03-09 | 凯利德阀门有限公司 | One-way valve capable of manually adjusting flow |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928646A (en) * | 1958-06-10 | 1960-03-15 | Clifford L Ashbrook | Chlorine flow control valve |
| CN2336155Y (en) * | 1998-06-15 | 1999-09-01 | 江苏海安通达水暖器材厂 | Stop valve specially adapted for chloric acid |
| CN101225885A (en) * | 2007-01-17 | 2008-07-23 | 江苏明江阀业有限公司 | Fluoroplastics whole lining stop valve special for alkali-chloride |
| CN201954017U (en) * | 2010-12-14 | 2011-08-31 | 江苏江华阀业有限公司 | No-leakage conical surface sealing special valve for wet chlorine |
| CN103671934A (en) * | 2012-09-02 | 2014-03-26 | 江苏海达船用阀业有限公司 | High-sealing-performance corrosion-resistant fully-padded stop valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208217A (en) * | 2000-01-21 | 2001-08-03 | Showa Denko Kk | Valve and its manufacturing method |
| CN2854238Y (en) * | 2005-11-04 | 2007-01-03 | 淄博泰丰阀门制造有限公司 | Valve special for chloroalkali evaporation |
| CN201071938Y (en) * | 2007-07-26 | 2008-06-11 | 上海凯工阀门有限公司 | Dual-purpose valve |
| CN201651333U (en) * | 2010-01-11 | 2010-11-24 | 江苏明江阀业有限公司 | Special valve for chlorine gas |
| CN201973260U (en) * | 2011-03-31 | 2011-09-14 | 江苏金晟元特种阀门有限公司 | Special valve for chlorine gas |
| CN202659915U (en) * | 2012-07-22 | 2013-01-09 | 江苏金晟元特种阀门有限公司 | Ammonia stop valve |
| CN206409650U (en) * | 2017-01-22 | 2017-08-15 | 江苏金晟元特种阀门股份有限公司 | Special valve for special chlorine |
-
2017
- 2017-01-22 CN CN201710047149.9A patent/CN106763833A/en active Pending
- 2017-04-20 WO PCT/CN2017/081191 patent/WO2018133225A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2928646A (en) * | 1958-06-10 | 1960-03-15 | Clifford L Ashbrook | Chlorine flow control valve |
| CN2336155Y (en) * | 1998-06-15 | 1999-09-01 | 江苏海安通达水暖器材厂 | Stop valve specially adapted for chloric acid |
| CN101225885A (en) * | 2007-01-17 | 2008-07-23 | 江苏明江阀业有限公司 | Fluoroplastics whole lining stop valve special for alkali-chloride |
| CN201954017U (en) * | 2010-12-14 | 2011-08-31 | 江苏江华阀业有限公司 | No-leakage conical surface sealing special valve for wet chlorine |
| CN103671934A (en) * | 2012-09-02 | 2014-03-26 | 江苏海达船用阀业有限公司 | High-sealing-performance corrosion-resistant fully-padded stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106763833A (en) | 2017-05-31 |
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