CN104315171A - Improved valve seat for throttling stop emptying valve - Google Patents
Improved valve seat for throttling stop emptying valve Download PDFInfo
- Publication number
- CN104315171A CN104315171A CN201410656699.7A CN201410656699A CN104315171A CN 104315171 A CN104315171 A CN 104315171A CN 201410656699 A CN201410656699 A CN 201410656699A CN 104315171 A CN104315171 A CN 104315171A
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- Prior art keywords
- valve seat
- valve
- face
- upper conical
- right angle
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses an improved valve seat for a throttling stop emptying valve, and belongs to the field of valves. The improved valve seat for the throttling stop emptying valve is annular, an outward projecting positioning table is arranged in the middle of the outer circumference of the valve seat, an upper right-angle step and a lower right-angle step are formed on the outer circumferential surface of the valve seat, the inner circumferential surface of the valve seat comprises an upper conical surface, a lower conical surface and a straight surface, the upper conical surface is a sealing surface matched with a valve clack, a wear-resistant anticorrosion hard alloy layer or tungsten carbide hard surface layer is overlaid or sprayed on the sealing surface, the lower conical surface is connected with the upper conical surface through the straight surface to form a step, and the lower conical surface is matched with a pressing ring. Functional protection of the valve seat is effectively realized.
Description
Technical field
The present invention relates to valve field, specifically a kind of modified model choke stop evacuation valve valve seat.
Background technique
Choke stop evacuation valve is a kind of double seal valve, plays in the conveyance conduit being mainly used in oil, rock gas, coal gas, blau gas etc., uses usually used as regulable control or cut-out.Such valve is a kind of novel throttling, cut-off, emptying product, has multistage throttle effect, the features such as restriction effect is obvious, sealing is reliable, convenient operating maintenance.
At existing choke stop evacuation valve in the throttling of valve, cut-out, equalizing orifice arranges to alleviate in operation torsion, combination seal etc. all very much progress.But in actual conditions application, still there are distinct issues: be mainly reflected in the valve good operation period not long, bad working environments occurs that quality problems are many.Particularly when High Pressure Difference, operating mode medium unholiness (such as, dust, body refuse etc.), general valve seal easily damages and occurs that the situation of interior leakage is more, and even serious jam appears in some valve.Tracing it to its cause, it is not exclusively reasonable to be mainly structural design: although valve design function all has configuration, and in fact its Functional Design structure can not extensively be suitable for, and its structure exists wretched insufficiency in self function and protecting.
Summary of the invention
The present invention aims to provide a kind of modified model choke stop evacuation valve valve seat, to solve the problem of self function and protecting.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of modified model choke stop evacuation valve valve seat, it is characterized in that: described valve seat is circular, is provided with outwardly positioning table in the middle part of excircle, outer peripheral surface forms upper and lower two right angle steps; Described valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms; Described upper conical is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face connects into step by facing directly with upper conical face, inferior pyramidal face and pressure ring adaptation.
Further, height is faced described in directly adaptive with the boss height on pressure ring.
Further, the spacing scarce adaptation of described upper right angle step and valve pocket bottom, lower right angle step and valve body adaptation.
Beneficial effect of the present invention is:
One, form two right angle steps at the outer peripheral surface of valve seat respectively by positioning table, topping bar, it is adaptive to lack with valve pocket lower limit, lower right angle step and valve body adaptation.Three location like this, this shape makes valve seat just be arranged in valve body, and without the need to other screw energy orientation tools, when dismantling, only need take out valve pocket then three's locate failure, namely valve seat loosens, very convenient taking-up.
Two, valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms, upper and lower conical surface and face formation step directly, valve seat like this and pressure ring coordinate and form slow nip structural design.Valve opening moment, hard, soft sealing face that flap, soft seal circle and valve seat are formed successively are thrown off, and in this process, the boss of pressure ring forms slow nip with the segment length that coordinates faced directly of valve seat, and medium still can not enter sealing surface immediately.Slow nip structural design, prevent valve open/close moment soft seal from being torn by high pressure, prevent high pressure valve from opening and closing moment simultaneously, easily the problem in damage soft seal face, ensure that this structure is applicable to the reliability of high, medium and low voltage simultaneously.
Three, conical seal (contact) face is beneficial to purging, easily removes the foul on sealing surface.Conical seal (contact) face is unfavorable for that foreign material are piled up or deposition, and is very easy to purge totally, prevents sealing surface extruded by hard object or scratch.
Accompanying drawing explanation
Fig. 1 is modified model choke stop evacuation valve valve seat construction schematic diagram provided by the invention.
Fig. 2 adopts modified model choke stop evacuation valve structural representation of the present invention.
Mark in figure: 3 for valve seat, 35a1 be upper conical, 35a2 be inferior pyramidal face, 35a3 for facing directly, 45 be positioning table.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described.
As shown in Figure 1, a kind of modified model choke stop evacuation valve valve seat, is characterized in that: described valve seat 3 is for circular, and be provided with outwardly positioning table 45 in the middle part of excircle, outer peripheral surface forms upper and lower two right angle steps; Described valve seat 3 inner peripheral surface is by upper conical 35a1, inferior pyramidal face 35a2 and face 35a3 directly and form; Described upper conical 35a1 is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face 35a2 by facing 35a3 directly and upper conical 35a1 connects into step, inferior pyramidal face 35a2 and pressure ring adaptive. described in face 35a3 height directly and the boss height on pressure ring adaptive.The spacing scarce adaptation of described upper right angle step and valve pocket bottom, lower right angle step and valve body adaptation.
When mounted, topping bar, it is adaptive to lack with valve pocket lower limit, lower right angle step and valve body adaptation.Three location like this, this shape makes valve seat just be arranged in valve body, and without the need to other screw energy orientation tools, when dismantling, only need take out valve pocket then three's locate failure, namely valve seat loosens, very convenient taking-up.In use, valve opening moment, hard, soft sealing face that flap, soft seal circle and valve seat are formed successively are thrown off, and in this process, the boss of pressure ring forms slow nip with the segment length that coordinates facing 35a3 directly of valve seat, and medium still can not enter sealing surface immediately.Slow nip structural design, prevent valve open/close moment soft seal from being torn by high pressure, prevent high pressure valve from opening and closing moment simultaneously, easily the problem in damage soft seal face, ensure that this structure is applicable to the reliability of high, medium and low voltage simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a modified model choke stop evacuation valve valve seat, is characterized in that: described valve seat is circular, is provided with outwardly positioning table in the middle part of excircle, and outer peripheral surface forms upper and lower two right angle steps; Described valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms; Described upper conical is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face connects into step by facing directly with upper conical face, inferior pyramidal face and pressure ring adaptation.
2. modified model choke stop evacuation valve valve seat according to claim 1, is characterized in that: described in face height directly and boss height on pressure ring is adaptive.
3. modified model choke stop evacuation valve valve seat according to claim 1, is characterized in that: the spacing scarce adaptation of described upper right angle step and valve pocket bottom, lower right angle step and valve body adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656699.7A CN104315171A (en) | 2014-11-18 | 2014-11-18 | Improved valve seat for throttling stop emptying valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410656699.7A CN104315171A (en) | 2014-11-18 | 2014-11-18 | Improved valve seat for throttling stop emptying valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104315171A true CN104315171A (en) | 2015-01-28 |
Family
ID=52370448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410656699.7A Pending CN104315171A (en) | 2014-11-18 | 2014-11-18 | Improved valve seat for throttling stop emptying valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315171A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106272U (en) * | 1991-10-14 | 1992-06-03 | 王佐才 | Sluice valve type stop valve |
| CN1219998A (en) * | 1996-05-23 | 1999-06-16 | 费希尔控制国际公司 | Protected soft sealing face with secondary hard sealing face |
| RU2186276C2 (en) * | 2000-06-02 | 2002-07-27 | Орловский государственный технический университет | Valve gate |
| CN2641393Y (en) * | 2003-09-18 | 2004-09-15 | 张晓佳 | Cone core type shutoff valve |
| CN102359611A (en) * | 2011-09-29 | 2012-02-22 | 天津百利展发集团有限公司 | Washout-preventing soft-sealing single-seat regulating valve |
| CN202768868U (en) * | 2012-08-29 | 2013-03-06 | 江阴万讯自控设备有限公司 | Protection-type soft seal valve core structure |
| CN204226688U (en) * | 2014-11-18 | 2015-03-25 | 自贡自高阀门有限公司 | A kind of modified model choke stop evacuation valve valve seat |
-
2014
- 2014-11-18 CN CN201410656699.7A patent/CN104315171A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106272U (en) * | 1991-10-14 | 1992-06-03 | 王佐才 | Sluice valve type stop valve |
| CN1219998A (en) * | 1996-05-23 | 1999-06-16 | 费希尔控制国际公司 | Protected soft sealing face with secondary hard sealing face |
| RU2186276C2 (en) * | 2000-06-02 | 2002-07-27 | Орловский государственный технический университет | Valve gate |
| CN2641393Y (en) * | 2003-09-18 | 2004-09-15 | 张晓佳 | Cone core type shutoff valve |
| CN102359611A (en) * | 2011-09-29 | 2012-02-22 | 天津百利展发集团有限公司 | Washout-preventing soft-sealing single-seat regulating valve |
| CN202768868U (en) * | 2012-08-29 | 2013-03-06 | 江阴万讯自控设备有限公司 | Protection-type soft seal valve core structure |
| CN204226688U (en) * | 2014-11-18 | 2015-03-25 | 自贡自高阀门有限公司 | A kind of modified model choke stop evacuation valve valve seat |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
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| RJ01 | Rejection of invention patent application after publication |