CN2355181Y - Special stop valve for liquid base - Google Patents
Special stop valve for liquid base Download PDFInfo
- Publication number
- CN2355181Y CN2355181Y CN 98227099 CN98227099U CN2355181Y CN 2355181 Y CN2355181 Y CN 2355181Y CN 98227099 CN98227099 CN 98227099 CN 98227099 U CN98227099 U CN 98227099U CN 2355181 Y CN2355181 Y CN 2355181Y
- Authority
- CN
- China
- Prior art keywords
- valve
- special stop
- caustic soda
- stop valve
- liquid caustic
- 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.)
- Expired - Fee Related
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- Valve Housings (AREA)
- Sliding Valves (AREA)
Abstract
The utility model relates to a special stop valve for liquid base for controlling the flow of the medium, which is used on a liquid base pipeline in chemical industry. The utility model comprises a valve clack, a valve rod, a valve body and a valve cover and is characterized in that the end of the valve clack forms a spherical surface shape; the lower part of the inner cavity of the valve body is welded with a round spherical surface sealed seat, and the lower part of the valve rod is provided with a conical surface-shaped sealed lug boss. Because a spherical surface-shaped corrosion resistant metal resistant sealed structure is used, the utility model can satisfy the use requirement for the liquid medium with impurities and has the advantages of no adherence of the sealed surface, good tightness and long service life.
Description
The utility model is a kind of a kind of liquid caustic soda special stop valve that control media flows on the chemical industry liquid caustic soda pipeline that is used for.
Relevant by retrieval patent documentation is not found the valve identical with the utility model structure as yet.Advanced in the world at present liquid caustic soda system valve is the stop valve that Japan produces, and structure is a universal cutoff valves, and its seal form has plane sealing, conical surface seal.Its seal form can not adapt to the usage requirement of chemical industry liquid caustic soda pipeline, particularly conical surface type sealing, and the valve closing imprecision causes leakage, and sealing surface is damaged.The valve that domestic chemical industry is used on the liquid caustic soda pipeline also is in the majority with the universal cutoff valves structure, seal form has plane, the conical surface, it is same because sealing configuration does not reach usage requirement, make the valve closing imprecision,, will cause leakage through using a period of time, and sealing surface is damaged, can not adapt to requirement, be prone to accidents, cause economic loss in the chemical pipeline continuous operation overhaul life.
The purpose of this utility model is to provide a kind of have novel sealing surface structure, good seal performance, corrosion-resistant, safe and reliable liquid caustic soda special stop valve.
Technical solution of the present utility model is: the liquid caustic soda special stop valve comprises flap, valve rod, valve body, valve gap assembly, it is characterized in that: the end of flap becomes sphere shape; The ball face seal seat that adopts wear resistant alloy material is arranged in the built-up welding of body cavity bottom; In stem lower portion the cone-shaped seal boss is arranged.On sphere shape sealing surface the surfacing groove is arranged, surfacing has the anticorrosion alloy material in the groove.In the body cavity bottom annular stack weld groove is arranged, built-up welding anticorrosion alloy material in the built-up welding groove.There is the surface overlaying of cone-shaped seal boss that the anticorrosion alloy material is arranged in the bottom of valve rod.
Be installed in the liquid caustic soda special stop valve on the liquid caustic soda pipeline, when opening/shutting valve, valve rod moves up and down in the valve body body cavity at the flap that drives the connection of floating under the guiding of positioning means, and having guaranteed does not have adhesive wear between sealing surface, reach sealing effect.When throttle down, surfacing has the self-align sphere shape sealing seat of being close to body cavity built-up welding anticorrosion alloy material of sphere shape flap of anticorrosion alloy material on the sealing surface, makes sealing tight.When Open valve, after flap is fully opened, the cone-shaped seal boss face on the valve rod promptly with valve gap on upper seal support be close to mutually, constitute gap-free sealedly, can under the valve working state, increase or change filler.
The utility model has the advantages that structural design is new reasonable, be connected that flap and valve seal seat adopt self-align ball face sealing structure, make valve seal tight, and be safe and reliable because valve rod adopts to float with flap.Because flap, valve seal seat and upper seal support sealing material adopt corrosion resistant, wear resistant alloy material, corrosion resistant, wear-resisting property are good.Because the effect of positioning means, during valve opening and closing, sealing surface does not have adhesive wear, good seal performance, long service life, thus can satisfy the usage requirement of chemical industry liquid caustic soda system pipeline equipment overhaul cycle, regulation international, relative national standards that every technical performance index reaches.
Below in conjunction with description of drawings the utility model embodiment:
Accompanying drawing is a liquid caustic soda special stop valve structural representation.
Shown in accompanying drawing, pressure injection sintering elaxtic seal constitutes upper seal support 8 below valve gap 12.Pack the matching hole on top in from valve gap 12 support inboards Stem Mut 11 and adopt and be threaded with handwheel 13.Load onto the V-type fluoroplastic filler 15 of compression moulding in the filler chamber of valve gap 12, the Gland 9 of packing into above filler 15 is pushed down filler 15, and is connected with valve gap 12 with swing bolt.On valve gap 12 1 side supports, screw in positioning screwn, and fix with nut and valve gap 12 supports.Valve rod 6 screw threads one end is passed upper seal support 8, filler 15, fills out bar gland 9 and be connected with Stem Mut 11 trapezoidal threads from the below of valve gap 12, adjust positioning screwn 10, reach the valve rod 6 no jam phenomenon that moves up and down.With flap lid 5 valve rod 6 of packing into, cover the floor clip 4 of packing in 5 tool withdrawal grooves at flap, in valve rod 6 grooves, load onto and split annulus 3, flap 2 is sleeved on valve rod 6 ends, split above the annulus 3, screw with flap lid 5, flap constitutes unsteady the connection with the flap lid, can avoid because foozle influences valve seal, floor clip 4 is fixing with flap 2 flaps lid 5 respectively.Flange gasket 7 in placing on the middle flange recessed surfaces of the valve body 1 of inner chamber built-up welding anticorrosion alloy material seal seat connects the valve gap assembly with valve body employing bolton.Load onto roundlet nut 14 at the Stem Mut top fastening with handwheel.
Claims (4)
1, a kind of liquid caustic soda special stop valve comprises flap, valve rod, valve body, valve gap assembly, it is characterized in that: the end of flap becomes sphere shape; Inner chamber bottom built-up welding at valve body has the ball face seal seat that adopts wear resistant alloy material; In the bottom of valve rod the cone-shaped seal boss is arranged.
2, liquid caustic soda special stop valve according to claim 1 is characterized in that: on sphere shape flap sealing surface the surfacing groove is arranged, surfacing has the anticorrosion alloy material in the groove.
3, liquid caustic soda special stop valve according to claim 1 is characterized in that: in the body cavity bottom annular stack weld groove is arranged, built-up welding anticorrosion alloy material in the built-up welding groove.
4, liquid caustic soda special stop valve according to claim 1 is characterized in that: have the surface overlaying of cone-shaped seal boss that the anticorrosion alloy material is arranged in the bottom of valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227099 CN2355181Y (en) | 1998-06-15 | 1998-06-15 | Special stop valve for liquid base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98227099 CN2355181Y (en) | 1998-06-15 | 1998-06-15 | Special stop valve for liquid base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2355181Y true CN2355181Y (en) | 1999-12-22 |
Family
ID=33977486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98227099 Expired - Fee Related CN2355181Y (en) | 1998-06-15 | 1998-06-15 | Special stop valve for liquid base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2355181Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN113404890A (en) * | 2021-07-06 | 2021-09-17 | 四川泰诺流体控制技术有限公司 | Hydraulic switch mechanism and high-pressure three-way valve |
-
1998
- 1998-06-15 CN CN 98227099 patent/CN2355181Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090542A (en) * | 2015-09-16 | 2015-11-25 | 上海沪东造船阀门有限公司 | Ultralow-temperature stainless steel welding type stop valve for liquefied natural gas ship |
| CN113404890A (en) * | 2021-07-06 | 2021-09-17 | 四川泰诺流体控制技术有限公司 | Hydraulic switch mechanism and high-pressure three-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |