CN2591349Y - Corrosion resisting butterfly valve - Google Patents
Corrosion resisting butterfly valve Download PDFInfo
- Publication number
- CN2591349Y CN2591349Y CN 02282025 CN02282025U CN2591349Y CN 2591349 Y CN2591349 Y CN 2591349Y CN 02282025 CN02282025 CN 02282025 CN 02282025 U CN02282025 U CN 02282025U CN 2591349 Y CN2591349 Y CN 2591349Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- plate
- valve seat
- wall surface
- 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 - Fee Related
Links
Abstract
The utility model relates to a corrosion resisting butterfly valve which is composed of an upper and a lower valve bodies which are provided with centring flanges, a valve seat which is arranged between the upper and the lower valve bodies, a valve plate which is arranged in a valve core cavity of the valve seat and is provided with an upper and a lower valve rod sockets and an upper and a lower valve rods, wherein, one end of which is respectively inserted in the two sockets of the valve plate, and the circumference wall surface of the valve plate of the butterfly valve is in a globular arc shape. The valve core cavity of the valve seat is formed by being surrounded with the globular arc-shaped surface which is arranged at the symmetrical center position in axial direction and is matched with the circumference wall surface of the valve plate and a conic surface, wherein, the cross sections of both sides of the globular arc-shaped surface are elliptical, and a small mouth end of the conic surface is connected with the globular arc-shaped surface. After the valve is closed, two valve chambers which are arranged at both sides of the valve plate are mutually isolated and sealed by top pressing and contacting the circumference wall surface of the valve plate and the globular arc-shaped wall surface of the valve core cavity. The utility model has the advantages of good sealing performance, small rotating resistance of the valve plate and flexible and convenient open and close of the valve, and the sealing of the valve rod can be automatically compensated in the course of the operation of the valve.
Description
Technical field
The utility model relates to a kind of corrosion resistant butterfly valve door.
Background technique
Corrosion resistant butterfly valve door is widely used a kind of control valve in chemistry, the Chemical Manufacture, and characteristics are that fluid resistance is little, switch is rapid, and Flow-rate adjustment is timely.It is reliable that the valve plate of existing corrosion resistance butterfly pump and valve seat spool chamber wall all adopt big magnitude of interference to cooperate to guarantee the sealing after valve cuts out, the valve plate edge is pressed and is trapped in the spool chamber wall, the valve plate rotational resistance is big, and valve open and close operation effort is dumb, is unfavorable for the operation and the control of valve.The interference fit seal of valve plate and valve seat spool chamber wall is linear sealing, easily denudes or scratches because of wall and leak, so existing corrosion resistance butterfly pump is shorter working life.The sealing of valve core rod and valve body, valve base chamber need often keep in repair, change owing to structural reason rubber seal in use can not compensate after compressing automatically.
Summary of the invention
The purpose of this utility model provides a kind of good seal performance, and the valve plate rotational resistance is little, valve open and close flexible operation, light, the corrosion resistance butterfly pump of long service life.
The corrosion resistance butterfly pump that the utility model provides is by on the band centering flange, following valve body, be loaded on, valve seat between following valve body, be loaded on have in the valve seat spool chamber on, the valve plate of lower valve rod socket and an end be plugged on respectively in valve plate two sockets on, the valve plate week side wall surface of the butterfly valve that lower valve rod constitutes is the globular arc wall, the valve seat spool chamber by axially to the lining centre with valve plate week the spherical arc that adapts of side wall surface and the cross section that is positioned at the spherical arc both sides be that the oval-shaped conical surface surrounds, conical surface osculum end is connected with spherical arc, and all side wall surfaces of valve plate and spool chamber globular arc wall roof pressure paste and touch the isolated mutually sealing of valve plate both sides valve chamber behind the valve closing.
In order to improve the sealability of valve, reduce maintenance, the replacing number of times of valve sealing element, prolong the working life of valve, further improving of corrosion resistance butterfly pump is, the upper and lower valve stem sleeve end face of corrosion resistance butterfly pump valve seat is the circular cone inclined-plane, two axle sleeve internal faces have annular groove, are installed with seal ring in the annular groove.Two valve stem seal pieces, one port that is sleeved on the upper and lower valve rod is the taper mouth that adapts with valve seat valve stem sleeve end face, and annular groove is arranged on the stem shaft wall surface of the hole of two sealing blocks, is installed with seal ring in the annular groove.Two sealing blocks are by the spring compression that is sleeved on the valve rod, and its taper mouth wall compresses attaching with the upper and lower valve stem sleeve end wall surface of valve seat respectively, but spring is compressed valve rod and valve body, valve base chamber sealing joint by pressure regulating cover.
The spherical wall roof pressure of valve shaft side wall surface and valve seat spool chamber fits into sealing surface sealing, good seal performance behind the corrosion resistance butterfly pump valve closing that the utility model provides.The valve plate interference is little, and valve plate both sides valve chamber wall is wealthy formula elliptic cone gradually, and the valve plate rotational resistance is little, and the valve open and close are flexible, light, are beneficial to the operation and the control of valve.The valve stem sleeve cone match spring compression that valve rod and valve body, valve base chamber sealing sealing block and valve are done, sealing configuration can compensate automatically in the valve using process, thereby has reduced maintenance, replacing number of times between sealing.
Description of drawings
Fig. 1 is the corrosion resistance butterfly pump structural representation.
Fig. 2 is a corrosion resistance butterfly pump side view shown in Figure 1.
Fig. 3 is valve seat construction figure.
Embodiment
Accompanying drawing be of the present utility model be example, describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in the figure, corrosion resistance butterfly pump is by split type valve body, valve seat (7), valve plate and upper valve rod (19), lower valve rod (13) formation of following valve body (14) formation of the upper valve body (2) of being with centering flange (18) and valve rod axis hole and band centering flange (15) and valve rod axis hole.Valve plate is connected with the central layer (21) of cylindrical upper and lower valve stem socket (17), (16) by integral body and the teflon corrosion resistant layer (22) that central layer coats is constituted, and is installed with " O " type rubber seal (27), (9) on the upper and lower valve rod axis hole of the clad wall surface of the hole.Valve plate side peripheral wall surfaces is the globular arc wall.The corrosion resistant valve seat of valve seat for adopting teflon to make, the valve seat spool chamber by axially to the lining centre with valve plate week the spherical arc that adapts of side wall surface and the cross section that is positioned at the spherical arc both sides be that the oval-shaped conical surface surrounds, conical surface osculum end is connected with spherical arc, and all side wall surfaces of valve plate and spool chamber globular arc wall roof pressure paste and touch the isolated mutually sealing of valve plate both sides valve chamber behind the valve closing.The valve seat outer wall has the installation hugging, and annular groove is arranged in the hugging, is installed with rubber seal (8), (29) in the annular groove.Valve seat valve stem sleeve end wall surface is the taper wall, and the axis hole wall surface of the hole has annular groove, is installed with " O " type rubber seal (28), (26) in the annular groove.Upper and lower valve body card crouches and in valve seat is installed hugging the valve seat mounting board is fixed between upper and lower valve body, and valve body and valve base chamber interface are sealed by seal ring.Upper and lower valve rod is inserted on the valve plate, socket is sealed by the seal ring on the valve plate, and by be sleeved on the valve rod port for and the corresponding taper mouth of valve seat valve stem sleeve end face, the spring (4) that the teflon seal that is installed with " O " type rubber seal (20), (25) on its valve rod axis hole wall surface of the hole presses fast (6), (10), compress sealed briquette by pressing plate (3), (5), (11), the gland (1) of spring compression, the sealing configuration of (12) formation are further sealed valve rod and valve body, valve base chamber interface by pressing plate (23), (24).Compress degree and sealing constantly is compensated make valve remain good sealing state by regulating gland in the using process.
Claims (2)
1, a kind of corrosion resistance butterfly pump, on band centering flange, following valve body, be loaded on, valve seat between following valve body, be loaded on have in the valve seat spool chamber on, the valve plate of lower valve rod socket and an end be plugged on respectively in valve plate two sockets on, lower valve rod constitutes, it is characterized in that all side wall surfaces of valve plate are the globular arc wall, the valve seat spool chamber by axially to the lining centre with valve plate week the spherical arc that adapts of side wall surface and the cross section that is positioned at the spherical arc both sides be that the oval-shaped conical surface surrounds, conical surface osculum end is connected with spherical arc, and all side wall surfaces of valve plate and spool chamber globular arc wall roof pressure paste and touch the isolated mutually sealing of valve plate both sides valve chamber behind the valve closing.
2, by the described corrosion resistance butterfly pump of claim 1, it is characterized in that the corrosion resistance butterfly pump valve seat on, lower valve rod sleeve end wall is the circular cone inclined-plane, diaxon sleeve wall surface of the hole has annular groove, be installed with seal ring in the annular groove, two valve stem seal pieces, one port that is sleeved on the valve rod is the taper mouth that adapts with valve seat valve stem sleeve end face, on the stem shaft wall surface of the hole of two sealing blocks annular groove is arranged, be installed with seal ring in the annular groove, two sealing blocks are by the spring compression that is sleeved on the valve rod, its taper mouth wall respectively with valve seat on, lower valve rod sleeve end wall compresses attaching, but spring is compressed by pressure regulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282025 CN2591349Y (en) | 2002-10-21 | 2002-10-21 | Corrosion resisting butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02282025 CN2591349Y (en) | 2002-10-21 | 2002-10-21 | Corrosion resisting butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591349Y true CN2591349Y (en) | 2003-12-10 |
Family
ID=33744211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02282025 Expired - Fee Related CN2591349Y (en) | 2002-10-21 | 2002-10-21 | Corrosion resisting butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591349Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103003601A (en) * | 2010-06-29 | 2013-03-27 | 三菱电机株式会社 | Step type valve |
| CN103644311A (en) * | 2013-12-20 | 2014-03-19 | 安徽省蚌埠华益导电膜玻璃有限公司 | Vacuum butterfly-shaped isolation valve |
-
2002
- 2002-10-21 CN CN 02282025 patent/CN2591349Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103003601A (en) * | 2010-06-29 | 2013-03-27 | 三菱电机株式会社 | Step type valve |
| CN103003601B (en) * | 2010-06-29 | 2015-04-01 | 三菱电机株式会社 | Step type valve |
| CN103644311A (en) * | 2013-12-20 | 2014-03-19 | 安徽省蚌埠华益导电膜玻璃有限公司 | Vacuum butterfly-shaped isolation valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |