CN203488743U - Pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve - Google Patents
Pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve Download PDFInfo
- Publication number
- CN203488743U CN203488743U CN201320585831.0U CN201320585831U CN203488743U CN 203488743 U CN203488743 U CN 203488743U CN 201320585831 U CN201320585831 U CN 201320585831U CN 203488743 U CN203488743 U CN 203488743U
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- China
- Prior art keywords
- valve
- valve seat
- butterfly
- butterfly plate
- sealing
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve. The pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve comprises a valve body, a valve rod, a pressing plate ring and a butterfly plate, wherein the valve rod is inserted in the valve body in the radial direction of the valve body, the valve rod and the valve body are connected in a rotating and sealing mode, the butterfly plate is arranged in the valve body, the valve rod is fixedly connected with the butterfly plate through a pin, one end of the valve rod is connected with a driving mechanism, the pressing plate ring is fixed to the butterfly plate through a screw, a circle of overlaying layer is arranged in the valve body, an annular sealing valve seat is arranged between the butterfly plate and the pressing plate ring, the outer circle of the sealing valve seat makes contact with the overlaying layer in a sealing mode, a round hole groove is formed in the butterfly plate, a compressing spring is arranged in the round hole groove, and one end of the compressing spring is matched with the sealing valve seat in an ejection mode. The pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve is simple in structure and reasonable in design, the compressing spring enables the sealing valve seat to axially float in a small interval, a bi-directional sealing effect is finally achieved, and the sealing valve seat adopts a full metal sealing structure mode, and is not only resistant to flushing, high temperature and high pressure but also long in service life.
Description
Technical field
The utility model relates to a kind of for the valve on pipeline, relates in particular to a kind of pretension, floating valve seat Bidirectional full metal hard seal butterfly valve.
Background technique
Butterfly valve is again Flap valve, is a kind of modulating valve simple in structure, and the switch that also can be used for low pressure pipeline medium is simultaneously controlled.Butterfly valve refers to that closure member (flap or butterfly plate) is disk, rotates to reach a kind of valve of open and close around valve shaft, and on pipeline, main rising cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the object that opens and closes or regulate.
The sealing configuration of butterfly valve is roughly by valve body
,the compositions such as valve rod, pressure plate loop, butterfly plate, screw, mostly are three eccentric structure forms.Valve body sealing surface is that direct built-up welding stainless steel or Hardmetal materials form through fine finishing.Seal valve seat adopts stainless steel sheets+composite material, is called multilayer hard-seal form, conventionally seal valve seat is screwed on butterfly plate.The seal valve seat of this structure is fixed afterwards and butterfly plate becomes one can not do the movement of any direction, without mobile space.
Each component (butterfly plate, pressure plate loop, seal valve seat) that form butterfly plate sealing configuration become one after being screwed each other, compressing, fix with valve rod again and without movement, contacting what reach that sealing effect leans on valve body sealing surface is to coordinate closely and dimensional accuracy, especially the gap of valve rod and axis hole directly affects sealing effect, and particularly sealing effect is poorer during backpressure.That is to say old product to be difficult to bear reverse media pressure and leak, being one-way sealing butterfly valve.In addition, seal valve seat is stainless steel sheets+composite material (at many levels) structure, and long-term use is subject to washing away of medium composite material is washed away and leaked, working life is short, withstand voltage low be the fatal shortcoming of this butterfly valve.
Model utility content
The utility model is in order to solve deficiency of the prior art, and a kind of good airproof performance, resistance to erosion, high temperature resistant, high pressure resistant, the pretension of long service life, floating valve seat Bidirectional full metal hard seal butterfly valve are provided.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: pretension, floating valve seat Bidirectional full metal hard seal butterfly valve, comprise valve body, valve rod, pressure plate loop and butterfly plate, valve rod is radially plugged in valve body along valve body, between valve rod and valve body, rotate and be tightly connected, butterfly plate is located in valve body, valve rod is fixedly connected with by pin with butterfly plate, valve rod one end is connected with driving mechanism, pressure plate loop is fixed by screws on butterfly plate, in valve body, be provided with a circle overlay cladding, between described butterfly plate and pressure plate loop, be provided with the seal valve seat of ring, the cylindrical of seal valve seat contacts with overlay cladding sealing, on butterfly plate, offer circle hole groove, in circle hole groove, be provided with Compress Spring, Compress Spring one end and the press fit of seal valve seat top.
Described seal valve seat is made by integrally-built all-metal material, forms the stuffing box of ring between the inner ring of seal valve seat, butterfly plate and pressure plate loop, is filled with stuffing box packing in stuffing box, and stuffing box packing is Expanded graphite.
Described butterfly plate is provided with the groove of ring, and seal valve seat is provided with the boss extending in groove, forms thus the Placement of fixing structure between butterfly plate and seal valve seat, the flying height of mouth-shaped till Formation cross-section between seal valve seat and butterfly plate.
Adopt technique scheme, the Placement between butterfly plate and seal valve seat to play to prevent that medium from rushing in stuffing box straight scrubs Expanded graphite, work the flexible graphite packing effect of protecting.The formation of stuffing box is filler pond of self-assembling formation after assembling.The bottom of pressure plate loop has a boss to coordinate with the stuffing box of self-assembling formation, plays stuffing box packing gland, simultaneously Compress Spring, press seal filler and seal valve seat retain certain flying height in the process of screw fastening.
The utility model is simple in structure, reasonable in design, Compress Spring makes the seal valve seat can axial float in very little gap, when the sealing surface of the effect lower seal valve seat of spring force is subject to positive pressure, the more tightening seal effect of the larger subsides of overlay cladding sealing surface pressure on valve plate cylindrical sealing surface and valve body is better, when being subject to backpressure, seal valve seat can compensate the gap between valve rod and bearing by axial float, does not make sealing pair depart from and causes seal leakage, finally reaches two way sealed effect.In addition, the utility model is that stainless steel sheets+composite material (at many levels) structure changes all-metal sealing structural type into by original seal valve seat, not only resistance to erosion, high temperature resistant, high pressure resistant but also long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged view at I place in the middle of Fig. 1.
Embodiment
As depicted in figs. 1 and 2, pretension of the present utility model, floating valve seat Bidirectional full metal hard seal butterfly valve, comprise valve body 1, valve rod 2, pressure plate loop 3 and butterfly plate 4, valve rod 2 is radially plugged in valve body 1 along valve body 1, between valve rod 2 and valve body 1, rotate and be tightly connected, butterfly plate 4 is located in valve body 1, valve rod 2 is fixedly connected with by pin 5 with butterfly plate 4, valve rod 2 one end are connected with driving mechanism, driving mechanism comprises motor 6 and speed reducer 7, the clutch end of speed reducer 7 is connected with valve rod 2 keys, pressure plate loop 3 is fixed on butterfly plate 4 by screw 9, in valve body 1, be provided with a circle overlay cladding 8, between butterfly plate 4 and pressure plate loop 3, be provided with the seal valve seat 10 of ring, the cylindrical of seal valve seat 10 contacts with overlay cladding 8 sealings, on butterfly plate 4, offer circle hole groove 11, in circle hole groove 11, be provided with Compress Spring 12, Compress Spring 12 one end and seal valve seat 10 top press fits.
Placement between butterfly plate 4 and seal valve seat 10 plays and prevents that medium from rushing in stuffing box straight and scrub Expanded graphite, plays the effect of protection flexible graphite packing.The formation of stuffing box is filler pond of self-assembling formation after assembling.The bottom of pressure plate loop 3 has a boss 15 to coordinate with the stuffing box of self-assembling formation, plays stuffing box packing 13 glands, simultaneously Compress Spring 12, press seal filler 13 and seal valve seat 10 retain certain flying height 16 in the fastening process of screw 9.
Compress Spring 12 makes the seal valve seat 10 can axial float in very little gap, when the sealing surface of the effect lower seal valve seat 10 of spring force is subject to positive pressure, the more tightening seal effect of the larger subsides of overlay cladding 8 sealing surface pressure on valve plate cylindrical sealing surface and valve body 1 is better, when being subject to backpressure, seal valve seat 10 can compensate the gap between valve rod 2 and bearing by axial float, do not make sealing pair depart from and cause seal leakage, finally reaching two way sealed effect.In addition, the utility model changes original seal valve seat 10 into all-metal sealing structural type for stainless steel sheets+composite material (at many levels) structure, not only resistance to erosion, high temperature resistant, high pressure resistant but also long service life.
Claims (3)
1. pretension, floating valve seat Bidirectional full metal hard seal butterfly valve, comprise valve body, valve rod, pressure plate loop and butterfly plate, valve rod is radially plugged in valve body along valve body, between valve rod and valve body, rotate and be tightly connected, butterfly plate is located in valve body, valve rod is fixedly connected with by pin with butterfly plate, valve rod one end is connected with driving mechanism, pressure plate loop is fixed by screws on butterfly plate, in valve body, be provided with a circle overlay cladding, it is characterized in that: the seal valve seat that is provided with ring between described butterfly plate and pressure plate loop, the cylindrical of seal valve seat contacts with overlay cladding sealing, on butterfly plate, offer circle hole groove, in circle hole groove, be provided with Compress Spring, Compress Spring one end and the press fit of seal valve seat top.
2. pretension according to claim 1, floating valve seat Bidirectional full metal hard seal butterfly valve, it is characterized in that: described seal valve seat is made by integrally-built all-metal material, between the inner ring of seal valve seat, butterfly plate and pressure plate loop, form the stuffing box of ring, in stuffing box, be filled with stuffing box packing, stuffing box packing is Expanded graphite.
3. pretension according to claim 1 and 2, floating valve seat Bidirectional full metal hard seal butterfly valve, it is characterized in that: described butterfly plate is provided with the groove of ring, seal valve seat is provided with the boss extending in groove, between butterfly plate and seal valve seat, form thus the Placement of fixing structure, the flying height of mouth-shaped till Formation cross-section between seal valve seat and butterfly plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585831.0U CN203488743U (en) | 2013-09-23 | 2013-09-23 | Pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585831.0U CN203488743U (en) | 2013-09-23 | 2013-09-23 | Pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488743U true CN203488743U (en) | 2014-03-19 |
Family
ID=50259578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320585831.0U Withdrawn - After Issue CN203488743U (en) | 2013-09-23 | 2013-09-23 | Pre-tightening floating valve seat bi-directional full metal hard sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486281A (en) * | 2013-09-23 | 2014-01-01 | 开封瑞科阀门有限公司 | Two-way all-metal hard seal butterfly valve with pre-tightening and floating valve seat |
-
2013
- 2013-09-23 CN CN201320585831.0U patent/CN203488743U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486281A (en) * | 2013-09-23 | 2014-01-01 | 开封瑞科阀门有限公司 | Two-way all-metal hard seal butterfly valve with pre-tightening and floating valve seat |
| CN103486281B (en) * | 2013-09-23 | 2016-08-10 | 开封瑞科阀门有限公司 | Pretension, floating valve seat Bidirectional full metal hard seal butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140319 Effective date of abandoning: 20160810 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140319 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |