CN204554032U - Modulating valve stainless steel black box - Google Patents
Modulating valve stainless steel black box Download PDFInfo
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- CN204554032U CN204554032U CN201520217508.7U CN201520217508U CN204554032U CN 204554032 U CN204554032 U CN 204554032U CN 201520217508 U CN201520217508 U CN 201520217508U CN 204554032 U CN204554032 U CN 204554032U
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- ring
- stainless steel
- rubber
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- tamponade
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Abstract
The utility model discloses a kind of modulating valve stainless steel black box, it relates to modulating valve technical field.It comprises stainless steel tamponade body, the first brass back-up ring, tetrafluoro dust ring, the first rubber o-ring, the second rubber o-ring, general plug envelope, the second brass back-up ring and red copper pad, inside, stainless steel tamponade body upper end is provided with the first brass back-up ring, tetrafluoro dust ring, the first rubber o-ring from top to bottom successively, bottom right, stainless steel tamponade body lower end is supreme is provided with the second brass back-up ring, general plug envelope and the second rubber o-ring successively, and described red copper pad is socketed in the seam of stainless steel tamponade body.The utility model structure is simple, and sealing is reliable, and its overall structure is separated with valve body, and with being threaded during assembling, assembling is simple, meets when valve stem seal leaks and can change rapidly a whole set of black box, easy to maintenance.
Description
Technical field
The utility model relates to black box internal structure and sealing means, be specifically related to a kind of modulating valve stainless steel black box.
Background technique
Valve rod is the vitals driving open-shut device to make valve opening and closedown, because valve rod is movable piece.So be the most easily produce the position leaked outside.Therefore, valve stem seal is very important for valve.Existing valve stem seal form is as shown in Fig. 1 (valve rod A, tamponade B, stuffing box packing C): tamponade and valve body are by being threaded, and press seal filler.Stuffing box packing probably has several as follows:
(1) lip filler: lip filler is due to its lips softness, and can lateral spread be close on retaining wall under pressure medium effect, this extended pattern filler can be used in compressible filler, can not with relatively hard material.The shortcoming of lip filler is its seal action is unidirectional.Major part is used for the pure teflon of lip filler or the filled polytetrafluoroethylene manufacture of valve rod.But also have and use fiber reinforced rubber or leather to manufacture.Mainly be used in hydraulic pressure aspect.V-type made by the lip filler that major part is used as valve rod.So not only be convenient to install but also be convenient to expand.
(2) extruding type filler: the title of extruding type filler is applicable to the filler that O shape encloses a class.This filler is installed its side rear and is squeezed, and the resiliently deformable by material keeps the preload force of its side direction.When medium enters packing cavity from bottom, filler just to the space motion between valve rod and supporting base, thus plugs leakage path.When packing cavity pressure declines again, filler recovers its original shape again.
(3) thrust filler: thrust filler forms by packing ring or by the packing ring be contained between valve gap and valve rod shoulder, valve rod can move axially by packing ring relatively freely.Initial valve stem seal can by auxiliary shaft seal as contracting filler of living provides, and also can be provided by spring, this spring forces valve rod shoulder to withstand thrust filler, and pressure medium thereafter just can force valve rod shoulder to contact with filler more closely.
(4) sealing of membrane valve valve rod: membrane valve valve rod is by flexibility and the valve gap of pressure-bearing seals, and this valve gap makes valve rod be connected with closure member.As long as this sealing barrier film did not lose efficacy, any medium just can be avoided to be released to air by valve rod.The material of barrier film is different according to the purposes difference of valve, available stainless steel, plastics or rubber etc.
Above-mentioned regulating valve rod sealing means assembly technology relative complex, its stuffing box packing is all arranged in valve body or valve gap, in use wastes time and energy in case of leakage dismounting stuffing box packing more renews filler.
Model utility content
For the deficiency that prior art exists, the utility model object is to provide a kind of modulating valve stainless steel black box, valve rod sealing assembly is designed to individual components, simplify assembly technology on the one hand, convenient maintenance and replacement on the other hand, meeting leakage situation can a whole set of Sealing of quick-replaceable, time saving and energy saving.
To achieve these goals, the utility model realizes by the following technical solutions: modulating valve stainless steel black box, comprise stainless steel tamponade body, first brass back-up ring, tetrafluoro dust ring, first rubber o-ring, second rubber o-ring, general plug envelope, second brass back-up ring and red copper pad, inside, stainless steel tamponade body upper end is provided with the first brass back-up ring from top to bottom successively, tetrafluoro dust ring, first rubber o-ring, bottom right, stainless steel tamponade body lower end is supreme is provided with the second brass back-up ring successively, general plug envelope and the second rubber o-ring, described red copper pad is socketed in the seam of stainless steel tamponade body.
As preferably, described stainless steel tamponade body lower end outer wall is provided with the screw thread be connected with valve body.
As preferably, described stainless steel tamponade body lower end cylindrical coordinates with valve body, plays positioning action.
The beneficial effects of the utility model: structure is simple, sealing is reliable, and its overall structure is separated with valve body, and with being threaded during assembling, assembling is simple, meets when valve stem seal leaks and can change rapidly a whole set of black box, easy to maintenance.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the position view that the utility model is applied on valve body.
Embodiment
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the utility model further.
With reference to Fig. 2-3, this embodiment is by the following technical solutions: modulating valve stainless steel black box, comprise stainless steel tamponade body 1, first brass back-up ring 2, tetrafluoro dust ring 3, first rubber o-ring 4, second rubber o-ring 5, general plug envelope 6, second brass back-up ring 7 and red copper pad 8, inside, stainless steel tamponade body 1 upper end is provided with the first brass back-up ring 2 from top to bottom successively, tetrafluoro dust ring 3, first rubber o-ring 4, bottom right, stainless steel tamponade body 1 lower end is supreme is provided with the second brass back-up ring 7 successively, general plug envelope 6 and the second rubber o-ring 5, described red copper pad 8 is socketed in the seam of stainless steel tamponade body 1, locking screw, red copper pad is made to produce resiliently deformable, play outside seal effect.Wherein stainless steel tamponade body 1 is processed by hexagonal rod, has the screw thread be connected with valve body outward, and lower end cylindrical coordinates with valve body, plays positioning action.
Described stainless steel tamponade body about 1 two ends are locked by dedicated hydraulic instrument, make its end face have slight deformation, and locking brass back-up ring, makes its interior fittings fix.
During practical set, red copper pad 8 is installed in the seam on valve body, locking screw, makes red copper pad produce resiliently deformable, plays outside seal effect.
The effect of the tetrafluoro dust ring 3 of upper end stops external dust and the foreign matter be attached on valve rod to enter black box, prevents from damaging valve rod; Upper and lower two its sides of O type circle are squeezed, and keep the preload force of its side direction, maintaining valve rod seal by its resiliently deformable; There is stainless steel spring sheet the general plug envelope inside of lower end, and respectively to resiliently deformable inside and outside valve rod radial direction, when valve inner has pressure, valve rod of can fitting more closely keeps sealing, and sealing effect is good, guarantees No leakage.
General plug envelope (Spring Seal/spring energized seal/Variseal) in this embodiment is the high-performance sealed part of the in-built special spring of a kind of U-shaped Furtulon, add system fluid pressure by suitable spring force, sealing lip (face) is ejected and pushes down gently by the metal covering that seals to generate very excellent sealing effect.The actuating effect of spring can overcome the slight eccentricity in metal combination face and the abrasion of sealing lip, and continues the sealability of possessing expection.
Furtulon (PTFE) is that a kind of chemical resistance is more excellent than FFKM, the sealing material that heat resistance is good, can be applicable to most chemical fluids, solvent, and hydraulic oil, lubricant oil, it is bloating tendency very little therefore can play sealability for a long time, utilize various special spring to overcome the elastic problem of Furtulon or other high-performance rubber plastics, develop the Sealing that replaceable large absolutely number is applied to static state or dynamic (reciprocal or rotary motion), serviceability temperature scope can by refrigerant to 300 DEG C, pressure by vacuum to hyperpressure 700kg travelling speed up to 20m/s, and spring can in response to different Environmental Conditions, select stainless steel, Elgiloy Hastelloy etc., therefore can be applicable to the occasion of various high temperature corrosive fluids.
General plug Feng Keyi AS 568A standard O type circular groove groove (as radial shaft seal, piston seal, axial face sealing etc.) makes, and replaces general purpose O shape ring completely, because of without bloating tendency puzzlement, therefore can keep good sealability for a long time.Such as be applied to the mechanical shaft seal of petrochemical industry processing procedure high-temperature corrosion environment, modal leakaging cause is except the irregular wear of slip ring, the deterioration damage of O shape ring is also main cause, the problems such as rubber softening, swelling, surface coarsening, abrasion can be improved completely, thus the working life of significantly elevating mechanism shaft seal after using HiPerSeal instead.
General plug envelope sound is all suitable, except the sealing applications of above-mentioned high-temperature corrosion environment, because it has, sealing lip friction factor is low, seal contact pressure is stablized, compression resistance is high, allow larger radial deflection (radial run-out) and groove dimensions error, therefore be highly suitable for the Sealing of Null oil-pressure cylinder, replace U-shaped or V-arrangement packing and obtain excellent sealability and working life.
Sealability is not by the impact of lack of lubrication when starting, effective minimizing abrasion and surface friction drag, through the collocation of different sealing material and spring, different sealing forces can be represented to adapt to various application demand, special CNC processing machine is adopted to make, without die cost-be particularly suitable for Sealing various on a small quantity, resistance to chemical attack and temperature capacity are more than conventional Sealing rubber excellence, dimensionally stable, absolutely not volume swelling or contraction the sealability deterioration problem that derives, delicate structure, the O shape circular groove groove of standard can be installed on, significantly improve sealability and working life, can any antipollution material of filling (as silica gel)-but be not suitable for radiation environment in seal groove, because sealing material is Furtulon, very clean, processing procedure friction factor can not be polluted extremely low, even if also very smooth-going in pole low-speed applications, have no " stagnant sliding effect ", starting friction resistance is little, even if dead time is long or intermittent running, equal energy keeps low starting force performance.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. modulating valve stainless steel black box, it is characterized in that, comprise stainless steel tamponade body (1), first brass back-up ring (2), tetrafluoro dust ring (3), first rubber o-ring (4), second rubber o-ring (5), general plug envelope (6), second brass back-up ring (7) and red copper pad (8), stainless steel tamponade body (1) inside, upper end is provided with the first brass back-up ring (2) from top to bottom successively, tetrafluoro dust ring (3), first rubber o-ring (4), stainless steel tamponade body (1) bottom right, lower end is supreme is provided with the second brass back-up ring (7) successively, general plug envelope (6) and the second rubber o-ring (5), described red copper pad (8) is socketed in the seam of stainless steel tamponade body (1).
2. modulating valve stainless steel black box according to claim 1, is characterized in that, described stainless steel tamponade body (1) lower end outer wall is provided with the screw thread be connected with valve body.
3. modulating valve stainless steel black box according to claim 1, is characterized in that, described stainless steel tamponade body (1) lower end cylindrical coordinates with valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217508.7U CN204554032U (en) | 2015-04-03 | 2015-04-03 | Modulating valve stainless steel black box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217508.7U CN204554032U (en) | 2015-04-03 | 2015-04-03 | Modulating valve stainless steel black box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204554032U true CN204554032U (en) | 2015-08-12 |
Family
ID=53829143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520217508.7U Active CN204554032U (en) | 2015-04-03 | 2015-04-03 | Modulating valve stainless steel black box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204554032U (en) |
-
2015
- 2015-04-03 CN CN201520217508.7U patent/CN204554032U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 271600 west of Pan Tai Street, Feicheng high tech Zone, Shandong Patentee after: SHANDONG YARUI ZHICHENG AUTOMATION TECHNOLOGY CO.,LTD. Address before: 271600 west of Pan Tai Street, Feicheng high tech Zone, Shandong Patentee before: SHANDONG YARUI REGULATING VALVE CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Governing valve stainless steel seal assembly Effective date of registration: 20200603 Granted publication date: 20150812 Pledgee: Taian Bank Co.,Ltd. Feicheng Branch Pledgor: SHANDONG YARUI ZHICHENG AUTOMATION TECHNOLOGY Co.,Ltd. Registration number: Y2020980002732 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210526 Granted publication date: 20150812 Pledgee: Taian Bank Co.,Ltd. Feicheng Branch Pledgor: SHANDONG YARUI ZHICHENG AUTOMATION TECHNOLOGY Co.,Ltd. Registration number: Y2020980002732 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Stainless steel seal assembly of regulating valve Effective date of registration: 20210914 Granted publication date: 20150812 Pledgee: Taian Bank Co.,Ltd. Feicheng Branch Pledgor: SHANDONG YARUI ZHICHENG AUTOMATION TECHNOLOGY Co.,Ltd. Registration number: Y2021980009277 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220906 Granted publication date: 20150812 Pledgee: Taian Bank Co.,Ltd. Feicheng Branch Pledgor: SHANDONG YARUI ZHICHENG AUTOMATION TECHNOLOGY CO.,LTD. Registration number: Y2021980009277 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |