CN203718130U - Novel movable sealing structure for valve rod of vacuum jacket melt valve - Google Patents
Novel movable sealing structure for valve rod of vacuum jacket melt valve Download PDFInfo
- Publication number
- CN203718130U CN203718130U CN201420112525.XU CN201420112525U CN203718130U CN 203718130 U CN203718130 U CN 203718130U CN 201420112525 U CN201420112525 U CN 201420112525U CN 203718130 U CN203718130 U CN 203718130U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- ring
- valve
- packing
- vacuum
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 238000012856 packing Methods 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 17
- 239000010439 graphite Substances 0.000 claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000007790 scraping Methods 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000008021 deposition Effects 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 101001017827 Mus musculus Leucine-rich repeat flightless-interacting protein 1 Proteins 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002910 structure generation Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model discloses a novel movable sealing structure for a valve rod of a vacuum jacket melt valve. The valve rod comprises an upper valve rod and a lower valve rod, wherein a valve clack is arranged at the top end of the upper valve rod; the bottom end of the upper valve rod and the top end of the lower valve rod are in spherical contact, and are clamped by using a split collar; a scraping ring, a metal force transfer ring, a force transfer spacer ring and a packing bushing are arranged in sequence from top to bottom outside the rod body of the upper valve rod; an upper flexible graphite packing is arranged between the metal force transfer ring and the force transfer spacer ring; a lower flexible graphite packing is arranged between the force transfer spacer ring and the packing bushing; a packing box vacuum static seal O-shaped ring is arranged on the outer circle of the packing bushing; a valve rod vacuum movable seal O-shaped ring is arranged in the inner hole of the packing bushing; a packing pressure plate is arranged below the packing bushing, and is connected outside the valve rod through a bolt and a nut. By adopting the novel movable sealing structure, the problems of easiness in damaging a sealing position as well as deterioration of media due to medium deposition caused by dead corners in a valve cavity are solved fundamentally, streamline design of the valve cavity is realized, and online replacement of a valve rod seal can be realized.
Description
Technical field
The utility model belongs to polyester industrial field, particularly a kind of vacuum jacket melt valve valve rod Novel movable sealing configuration.
Background technique
The insulation jacket thermal medium temperature of the vacuum jacket melt valve that polyester industrial polymerization technique device pipe-line system is used is 330 DEG C of left and right, technique melt medium high viscosity, poor fluidity, easily crystallization; 265～320 DEG C of operating mode media environment temperature, degree of vacuum is generally 10～200Pa.Tooling pipeline system requires its valve cavity streamline to manufacture and design, without dead angle.At present, known vacuum jacket melt valve valve rod movable sealing structure is: bellows and Expanded graphite composite structure, and there is following several respects shortcoming in this structure:
1. bellows valve rod movable sealing structure, valve cavity cannot be realized the streamline of melt medium process system requirement and the design without dead angle.
2. when process pipelines stop production to overhaul, melt medium crystalline solid retains between bellows ripple, when valve working, easily causes bellows to damage, thereby makes motive sealing disabler.
3. complex structure, manufacture difficulty is large, and manufacture cost is high.
Summary of the invention
According to the requirement of polyester industrial polymerization technique device pipe-line system, the utility model provides a kind of vacuum jacket melt valve valve rod Novel movable sealing configuration, this structure valve rod leak-proof structure is simple, manufacture difficulty is little, not fragile, and can change online, can make valve pocket realize airflow design.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of vacuum jacket melt valve valve rod Novel movable sealing configuration, valve rod comprises upper valve rod 13 and lower valve rod 14, the top of upper valve rod 13 is flap 1, the top of the bottom of upper valve rod 13 and lower valve rod 14 is sphere-contact and clamps with divided ring 15, the body of rod of upper valve rod 13 sets gradually scraping ring 2 outward from top to bottom, metal force transmission ring 3, power transmission spacer ring 5 and filler pressing sleeve 7, between metal force transmission ring 3 and power transmission spacer ring 5, flexible graphite packing 4 is set, lower flexible graphite packing 6 is set between power transmission spacer ring 5 and filler pressing sleeve 7, filler pressing sleeve 7 cylindricals arrange stuffing box vacuum static seal O shape circle 8, filler pressing sleeve 7 endoporus arrange valve rod vacuum dynamic seal O shape circle 9, filler pressing sleeve 7 belows arrange hold-down grid 12, hold-down grid 12 is connected to valve rod outside by bolt 10 and nut 11.
Described divided ring 15 is outside equipped with cutting ferrule 16 and is positioned at the axle jump ring back-up ring 17 on cutting ferrule 16 tops, to prevent that divided ring 15 from throwing off.
Described lower valve rod 14 use screws 18 and limiting board 19 are connected to valve rod outside.
Compared with prior art, the sealing configuration that the bellows of former vacuum jacket melt valve valve rod is added Expanded graphite by the utility model is improved to the combined sealing structure that Expanded graphite adds O shape circle.Eliminate the deficiency that former bellows movable sealing structure exists: 1) between ripple, adhere to the crystallization in the time stopping of melt medium and melt medium, while again driving, in valve opening and closing process, cause bellows to damage, thereby cause the phenomenon of seal failure; 2) bellows structure design cause in valve pocket there is dielectric deposition district 20(as Fig. 4).Meanwhile, the utility model has strengthened flap lifting height, has realized valve pocket streamlined without dead angle, without the structural design in dielectric deposition district.Valve rod is by original integral structure, changes divided ring, the ring set of double-body bike, the linkage structure alive of axle jump ring back-up ring into.This structure has reduced difficulty of processing, has realized while occurring to leak at valve stem seal position function that can fast online replacement seal element.
In a word, the utility model has fundamentally solved in fragile, the valve pocket in sealing position to be had dead angle to cause dielectric deposition and makes the rotten problem of medium, has realized the airflow design of valve pocket, and can realize the online replacing of valve stem seal.
Brief description of the drawings
Fig. 1 is vacuum jacket melt valve structural representation.
Fig. 2 is the upper and lower double-body bike kink of valve rod linkage structure (the II region zoomed-in view in Fig. 1).
Fig. 3 valve-rod combination sealed department bit architecture figure (the I region zoomed-in view in Fig. 1).
Fig. 4 is corrugated tube sealing structure figure.
Embodiment
Describe mode of execution of the present utility model in detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model vacuum jacket melt valve valve rod Novel movable sealing configuration, wherein valve rod comprises upper valve rod 13 and lower valve rod 14, the top of upper valve rod 13 is flap 1.In figure, B is the enable possition of flap 1, and C is the closed position of flap 1, and D is valve pocket, in figure arrow indication be MEDIA FLOW to.The utility model has strengthened the lifting height of flap 1, and in Fig. 1, A place has realized streamlined without dead angle, without the structural design of dielectric deposition.
As shown in Figure 2, the top of upper valve rod 13 is flap 1, the top of the bottom of upper valve rod 13 and lower valve rod 14 is sphere-contact and clamps with divided ring 15, and divided ring 15 is outside equipped with cutting ferrule 16 and is positioned at the axle jump ring back-up ring 17 on cutting ferrule 16 tops, to prevent that divided ring 15 from throwing off.Lower valve rod 14 use screws 18 and limiting board 19 are connected to valve rod outside.
As shown in Figure 3, the body of rod of upper valve rod 13 sets gradually scraping ring 2 outward from top to bottom, metal force transmission ring 3, power transmission spacer ring 5 and filler pressing sleeve 7, scraping ring 2 adopts nonmetallic composite, between metal force transmission ring 3 and power transmission spacer ring 5, flexible graphite packing 4 is set, lower flexible graphite packing 6 is set between power transmission spacer ring 5 and filler pressing sleeve 7, filler pressing sleeve 7 cylindricals arrange stuffing box vacuum static seal O shape circle 8, filler pressing sleeve 7 endoporus arrange valve rod vacuum dynamic seal O shape circle 9, filler pressing sleeve 7 belows arrange hold-down grid 12, hold-down grid 12 is connected to valve rod outside by bolt 10 and nut 11.
The implementation process of the utility model valve rod Novel movable sealing configuration:
Drive in flap 1 opening-closing process at upper valve rod 13, upper flexible graphite packing 4, lower flexible graphite packing 6 prevent that with stuffing box vacuum static seal O shape circle 8, valve rod vacuum dynamic seal O shape circle 9 medium from leaking outside, the ring of scraping simultaneously 2 adopts nonmetallic composite, heatproof is high, the flexible graphite packing of adhering on scraped valve rod, prevent flexible graphite packing contaminated melt medium, metal force transmission ring 3 and power transmission spacer ring 5 make filler pressing sleeve 7 evenly be passed to each filler to the impacting force of upper flexible graphite packing 4 and lower flexible graphite packing 6.In the time that combined sealing structure generation leakage need to be changed filler or O type circle, unclamp axle jump ring back-up ring 17, above move cutting ferrule 16, take out divided ring 15, rotation hand wheel drives lower valve rod 14 to be displaced downwardly to can take out hold-down grid 12, filler pressing sleeve 7 completely, can carry out the online replacing of filler and O type circle.
Claims (3)
1. a vacuum jacket melt valve valve rod Novel movable sealing configuration, valve rod comprises upper valve rod (13) and lower valve rod (14), it is characterized in that, the top of upper valve rod (13) is flap (1), the top of the bottom of upper valve rod (13) and lower valve rod (14) is sphere-contact and clamps with divided ring (15), the body of rod of upper valve rod (13) sets gradually scraping ring (2) outward from top to bottom, metal force transmission ring (3), power transmission spacer ring (5) and filler pressing sleeve (7), between metal force transmission ring (3) and power transmission spacer ring (5), flexible graphite packing (4) is set, between power transmission spacer ring (5) and filler pressing sleeve (7), lower flexible graphite packing (6) is set, filler pressing sleeve (7) cylindrical arranges stuffing box vacuum static seal O shape circle (8), filler pressing sleeve (7) endoporus arranges valve rod vacuum dynamic seal O shape circle (9), filler pressing sleeve (7) below arranges hold-down grid (12), hold-down grid (12) is connected to valve rod outside by bolt (10) and nut (11).
2. vacuum jacket melt valve valve rod Novel movable sealing configuration according to claim 1, it is characterized in that, described divided ring (15) is outside equipped with cutting ferrule (16) and is positioned at the axle jump ring back-up ring (17) on cutting ferrule (16) top, to prevent divided ring (15) disengagement.
3. vacuum jacket melt valve valve rod Novel movable sealing configuration according to claim 1, is characterized in that, described lower valve rod (14) is connected to valve rod outside with screw (18) and limiting board (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112525.XU CN203718130U (en) | 2014-03-13 | 2014-03-13 | Novel movable sealing structure for valve rod of vacuum jacket melt valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420112525.XU CN203718130U (en) | 2014-03-13 | 2014-03-13 | Novel movable sealing structure for valve rod of vacuum jacket melt valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718130U true CN203718130U (en) | 2014-07-16 |
Family
ID=51157280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420112525.XU Expired - Lifetime CN203718130U (en) | 2014-03-13 | 2014-03-13 | Novel movable sealing structure for valve rod of vacuum jacket melt valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265993A (en) * | 2014-10-11 | 2015-01-07 | 苏州道森钻采设备股份有限公司 | Valve rod ladder pressure difference seal structure for ultrahigh pressure fracture brake valve |
-
2014
- 2014-03-13 CN CN201420112525.XU patent/CN203718130U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265993A (en) * | 2014-10-11 | 2015-01-07 | 苏州道森钻采设备股份有限公司 | Valve rod ladder pressure difference seal structure for ultrahigh pressure fracture brake valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101725725B (en) | Gate valve | |
| CN203718130U (en) | Novel movable sealing structure for valve rod of vacuum jacket melt valve | |
| CN204314019U (en) | Hook circle movable tube sheets heat exchanger shell side structure for pressure test | |
| CN203703196U (en) | Ceramic sliding plate control valve | |
| CN103335122B (en) | Be threaded soft sealing butterfly valve | |
| CN203784351U (en) | Ball valve with flanges used for hospital oxygen transmission | |
| CN204420200U (en) | Cylinder-rotating three-way diverter valve | |
| CN204004559U (en) | A kind of sampling T-way valve | |
| CN202338651U (en) | Sleeve type butterfly valve | |
| CN204828681U (en) | Cooling right -angle type stop valve of industry | |
| CN207406788U (en) | More valve butterfly valves and material-transporting system | |
| CN103075526B (en) | Butterfly valve with inflation seal valve plate | |
| CN107620802B (en) | Flexible rotary pipe telescopic butterfly valve | |
| CN203560491U (en) | High-performance welding ball valve | |
| CN207500488U (en) | Chuck angie type bellows melt control valve | |
| CN202441902U (en) | Novel pneumatic butterfly valve | |
| CN203686338U (en) | Novel anti-torsion structure of corrugated pipe | |
| CN205173529U (en) | Motor gearbox drive's sealing gate valve | |
| CN202140580U (en) | Omniseal leakage-free butterfly valve | |
| CN203730954U (en) | Ball mill feeding seal device | |
| CN205173675U (en) | Hand wheel driven class valving | |
| CN104421452A (en) | High-temperature hard seal ball valve | |
| CN204175970U (en) | Stop valve | |
| CN206008219U (en) | A kind of stop valve | |
| CN204784980U (en) | Magnetic drive ne -leakage valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |