CN100351561C - Ceramic sluice valve - Google Patents
Ceramic sluice valve Download PDFInfo
- Publication number
- CN100351561C CN100351561C CNB2004101009298A CN200410100929A CN100351561C CN 100351561 C CN100351561 C CN 100351561C CN B2004101009298 A CNB2004101009298 A CN B2004101009298A CN 200410100929 A CN200410100929 A CN 200410100929A CN 100351561 C CN100351561 C CN 100351561C
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- China
- Prior art keywords
- face body
- seal face
- ceramic
- ceramic seal
- valve seat
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- 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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Abstract
The present invention relates to a ceramic sluice valve which is characterized in that a built-up welding hard alloy sealing face of a common sluice valve is replaced by a ceramic sealing face component. The component is composed of a ceramic sealing face body, a fastening device and sealing filler, wherein the ceramic sealing face body is a circular ring which is made of a ceramic material and has a vertical angle trapezoid cross-section, and the outer side is a conical surface. The fastening device is annular, and the inner side of the fastening device is processed with a section of screw threads connected with a valve seat and a valve clack, and a section of conical surface matched with the ceramic sealing face body. The ceramic sealing face body and the filler are tightly pressed on the valve seat and the valve clack by the fastening device. The present invention has the advantages of abrasion resistance, corrosion prevention, high-temperature resistance, easy maintenance and long lifetime. The present invention is suitable for the fields of power, chemical industry, national defence, scientific research, etc.
Description
Technical field
The present invention relates to a kind of gate valve of making sealing surface of stupalith.Belong to valve technology field.
Background technique
I have introduced ceramic stop valve, modulating valve and ball valve, but have not related to ceramic gate valve in " new structure ceramic valve " (Chinese patent ZL01265568.6).The present invention is replenishing " new structure ceramic valve ".The gate valve that power plant's ash disposal system is used, because of the wearing and tearing of dust granule, sealing surface easily leaks, and causes these valves to need often to change.The gate valve that chemical plant and natural-gas transfer pipeline use, because of the corrosive action of chemical substance, these valves are also often scrapped because of the sealing surface burn into leaks.Do sealing surface with stupalith, can improve the reliability and the working life of above-mentioned valve.
Summary of the invention
The purpose of this invention is to provide a kind of gate valve of making sealing surface of stupalith.The ceramic seal face can completely be changed.This can make significantly improve the working life of gate valve.This valve can be widely used in fields such as electric power, chemical industry, national defence, scientific research.
The object of the present invention is achieved like this:
With the valve seat of common gate valve and the built-up welding sealing surface of flap, all replace, and other structures of common gate valve and parts are constant substantially with ceramic seal face assembly.Ceramic seal face body is the annulus made from stupalith with right-angled trapezium cross section.Ceramic seal face assembly is made up of ceramic seal face body, locker and stuffing box packing.Locker and valve seat and flap are by being threaded.Be processed with the conical surface that matches with the ceramic seal face body outside conical surface in the locker inboard.When locker screws,, ceramic seal face body is pressed on valve seat and the flap owing to cooperate the axial force that produces on the conical surface.Between ceramic seal face body and valve seat and flap, and the empty cutter place of locker screw thread, be filled with stuffing box packing.On valve seat and flap, be processed with the boss that matches with ceramic seal face body, play the role of positioning.The conical surface on its fitting surface and the locker and screw thread coaxial line.Be processed with the groove of the rectangular cross-section of a plurality of symmetrical distributions in the locker outer rim, so that screw or unclamp locker with instrument.
The present invention is because sealing surface is made with stupalith, so and stupalith has advantage such as wear-resistant, corrosion-resistant, high temperature resistant is ceramic gate valve also has advantage such as wear-resistant, corrosion-resistant, high temperature resistant.Because ceramic seal face body is to be fixed on valve seat and the flap with locker, it can take out from valve body easily again, in case the ceramic seal face body that more renews, so this valve is easy to maintenance, long service life.
Description of drawings
Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the part sectioned view of the ceramic gate valve of proposition according to the present invention.
Embodiment
Describe the details and the working condition of the concrete structure that proposes according to the present invention in detail below in conjunction with Fig. 1.It is not as a limitation of the invention.
Ceramic gate valve comprises ceramic seal face body 6, locker 7, stuffing box packing 5, valve rod and the flap clamper assembly 8 of the ceramic seal face body 3, locker 9, stuffing box packing 10 of valve body 1, two opposed valve seats 2, valve seat, two opposed flaps 4, flap.The ceramic seal face body 3 and 6 of valve seat and flap is made by stupalith silicon carbide.It is shaped as the annulus with right-angled trapezium cross section.The tapering of its annulus outside conical surface is advisable between the 20-60 degree.Its skiving that is in contact with one another is to adhesive mutually.Valve seat 2 usefulness 1Cr18Ni9Ti stainless steels are made.It is shaped as the flanged (FLGD) pipe fitting of an end.The outer rim of flange is processed with screw thread.Its inner rim is processed with a boss, and its height is a little less than the thickness of ceramic seal face body 3.The not flanged (FLGD) end of valve seat matches with valve body arm root working surface, and is welded as a whole with it.Locker 9 usefulness 1Cr18Ni9Ti stainless steels are made.The annulus of its shape approximation square section.Its inboard is processed with one section internal thread, with the threads engaged of valve seat flange outer rim.Its inboard another section is processed into the inner conical surface that matches with ceramic seal face body 3.Its outside is processed with the rectangular cross-section groove 11 of 8 symmetrical distributions.Its purposes is to block groove 11 with instrument, and rotation lock device 9 screws locker or unclamps.When locker screwed, its end face should be lower than the outer Transverse plane of ceramic seal face body.The stuffing box packing 10 that is between ceramic seal face body 3 and the valve seat 2 is made up of two-part.A part is the rectangular cross-section carbon seal ring that is in locker thread root tool withdrawal groove place.Another part is between valve seat 2 and the ceramic seal face body 3, the ring thin slice made from Expanded graphite or soft metal.Valve seat 4 usefulness 1Cr18Ni9Ti stainless steels are made.Its end that matches with ceramic seal face body 6 is processed with a boss that matches with ceramic seal face body 6, and its height is a little less than the thickness of ceramic seal face body 6.Outer rim at flap 4 is processed with the outside thread that matches with the internal thread of locker 7.Other structure of flap 4 is identical with the flap of common gate valve.The structure of locker 7 is identical with locker 9.Stuffing box packing 5 is identical with stuffing box packing 10.Valve body 1 is identical with common gate valve with the structure of valve rod and flap clamp holder 8.
Claims (1)
1, ceramic gate valve, it is characterized in that: ceramic seal face assembly is by ceramic seal face body, locker and stuffing box packing are formed, the ceramic seal face body (3 of valve seat (2) and flap (4), 6) all make with stupalith, it is shaped as the annulus with right-angled trapezium cross section, the tapering of its annulus outside conical surface is advisable between the 20-60 degree, match with the boss of valve seat (2) and flap (4) in its inboard cylndrical surface, the height of boss is a little less than the thickness of ceramic seal face body, ceramic seal face body (3,6) skiving that is in contact with one another is to adhesive mutually, locker (7,9) annulus of shape approximation square section, its inboard is processed with one section internal thread, respectively with the threads engaged of flap outer rim and valve seat flange outer rim, its inboard another section is processed into and ceramic seal face body (6,3) inner conical surface that matches of male cone (strobilus masculinus), its outside is processed with the rectangular cross-section groove (11) of a plurality of symmetrical distributions, when locker screws, the locker end face should be lower than the exterior edge face of ceramic seal face body, be in ceramic seal face body (6,3) and the stuffing box packing (5 between flap (4) and the valve seat (2), 10) form by two-part, a part is the ring packing filler that is in the rectangular cross-section at locker thread root tool withdrawal groove place, another part is to be between the ceramic seal face body (6) and flap (4) of flap, and the ceramic seal face body (3) of valve seat and the laminar stuffing box packing of ring between the valve seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101009298A CN100351561C (en) | 2004-12-12 | 2004-12-12 | Ceramic sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101009298A CN100351561C (en) | 2004-12-12 | 2004-12-12 | Ceramic sluice valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1786527A CN1786527A (en) | 2006-06-14 |
| CN100351561C true CN100351561C (en) | 2007-11-28 |
Family
ID=36784097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101009298A Expired - Fee Related CN100351561C (en) | 2004-12-12 | 2004-12-12 | Ceramic sluice valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100351561C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135187A (en) * | 2010-12-27 | 2011-07-27 | 黄山良业阀门有限公司 | Gate valve for sealing of ceramic flashboard and metal elastic valve seat |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4389037A (en) * | 1975-08-18 | 1983-06-21 | Rockwell International Corporation | Double disc gate vale with replaceable spacer ring |
| DE3739483A1 (en) * | 1987-11-21 | 1989-06-01 | Preussag Ag Bauwesen | Gate valve |
| CN2046166U (en) * | 1989-04-17 | 1989-10-18 | 王佐才 | Expanding dual valve clacks sluice valve |
| CN2358285Y (en) * | 1998-12-08 | 2000-01-12 | 温州市中力阀门有限公司 | Gate valve |
| CN2818952Y (en) * | 2004-12-12 | 2006-09-20 | 左学禹 | Ceramic sluice valve |
-
2004
- 2004-12-12 CN CNB2004101009298A patent/CN100351561C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4389037A (en) * | 1975-08-18 | 1983-06-21 | Rockwell International Corporation | Double disc gate vale with replaceable spacer ring |
| DE3739483A1 (en) * | 1987-11-21 | 1989-06-01 | Preussag Ag Bauwesen | Gate valve |
| CN2046166U (en) * | 1989-04-17 | 1989-10-18 | 王佐才 | Expanding dual valve clacks sluice valve |
| CN2358285Y (en) * | 1998-12-08 | 2000-01-12 | 温州市中力阀门有限公司 | Gate valve |
| CN2818952Y (en) * | 2004-12-12 | 2006-09-20 | 左学禹 | Ceramic sluice valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1786527A (en) | 2006-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20101212 |