CN205226401U - Rubber valve seat butterfly valve - Google Patents
Rubber valve seat butterfly valve Download PDFInfo
- Publication number
- CN205226401U CN205226401U CN201521061799.1U CN201521061799U CN205226401U CN 205226401 U CN205226401 U CN 205226401U CN 201521061799 U CN201521061799 U CN 201521061799U CN 205226401 U CN205226401 U CN 205226401U
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- valve
- cast iron
- rubber
- stainless steel
- valve seat
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Abstract
The utility model discloses a rubber valve seat butterfly valve, a serial communication port, including the cast iron valve body, rubber valve seat, cast iron valve plate to and logical shaft type valve shaft, the sealed face of cast iron valve plate on be provided with the stainless steel layer, the stainless steel layer be whole sphere. The utility model discloses a whole sphere is become with rubber valve seat butterfly valve's close design of front cover, sealed moment of torsion can be effectively reduced. Sealed face adheres to the stainless steel on adopting nodular cast iron simultaneously, and sealed vice with rubber valve seat formation, the stainless steel has characteristics such as the material is wear -resisting, coefficient of friction is little to reduced the sealed moment of torsion of valve, the reduction of valve seal moment of torsion has also reduced drive arrangement's cost, accomplish energy -conservation, but wide application in water trade is the powerful guarantee of safe water.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of rubber valve seat butterfly valve.
Background technique
In prior art, between the valve seat of tradition butterfly valve and butterfly plate, the cylinder inner plane that adopts coordinates more, there is certain drawback in the fit system of this structure: can not coordinate too tight between butterfly plate and valve seat, if coordinate too tight, valve switch is just very difficult, if do not exert oneself, is just difficult to Open valve or complete throttle down, and throttle down of exerting oneself, butterfly plate is just easy to distortion and causes damage.But, if butterfly plate coordinates defective tightness with valve seat, be then easy to produce and leak.
Model utility content
The purpose of this utility model is the technological deficiency for existing in prior art, and provides a kind of rubber valve seat butterfly valve.
The technological scheme adopted for realizing the purpose of this utility model is:
A kind of rubber valve seat butterfly valve, is characterized in that, comprise cast iron valve body, rubber valve seat, cast iron valve plate, and shaft type valve shaft, and the sealing surface of described cast iron valve plate is provided with stainless steel lining, and described stainless steel lining is overall sphere.
Described cast iron valve plate is spheroidal graphite cast iron.
Described cast iron valve plate for the stainless steel lining surfacing described in spheroidal graphite cast iron, stainless steel lining thickness be 0.2mm ~ 0.25mm.
Described valve shaft upper end passes from the upper valve port of valve body and is connected to realize the unlatching of cast iron valve plate by key with operating-controlling mechanism, simultaneously, lower filler is provided with to seal between described cast iron valve shaft and upper valve port, the guide cylinder that described lower filler is fixedly connected with by relative valve body is positioned in the inner stopper of upper valve port, described guide cylinder upper end is provided with inner stopper formula stuffing box, is provided with filler and is located by its relative valve body by jump ring in described stuffing box.
Lower shaft sleeve is provided with between the lower end of the valve shaft stated and the lower valve port of valve body, inner stopper is formed in the lower valve port underpart of described cast iron valve body, be provided with in described inner stopper be set in valve shaft lower end combined seal ring to realize sealed bottom, described combined seal ring carries out extruding by the rear blanking cover be fixedly connected with valve body by filler pressing and locates.
Compared with prior art, the beneficial effects of the utility model are:
The sealing surface of rubber valve seat butterfly valve is designed to an integral spherical by the utility model, effectively can reduce packing torque.Sealing surface adopts on spheroidal graphite cast iron and adheres to stainless steel simultaneously, sealing pair is formed with rubber valve seat, stainless steel has the features such as material is wear-resisting, friction factor is little, thus reduce the packing torque of valve, the reduction of valve seal moment of torsion, also reduces the cost of drive unit, accomplishes energy-conservation, can be widely used in water industry, be the powerful guarantee of safe water.
Accompanying drawing explanation
Figure 1 shows that the structural representation of rubber valve seat butterfly valve of the present utility model;
Figure 2 shows that the cross section structure schematic diagram shown in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As illustrated in fig. 1 and 2, rubber valve seat butterfly valve of the present utility model comprises cast iron valve body 2, rubber valve seat, cast iron valve plate 8, and shaft type valve shaft 3, and the sealing surface of described cast iron valve plate is provided with stainless steel lining, and described stainless steel lining is overall sphere.Described sealing surface comprises lower end face corresponding to the bi-side of valve plate and the upper end face corresponding with upper valve port and lower valve port, and this four part is on same sphere.The sealing surface of rubber valve seat butterfly valve is designed to an integral spherical, effectively can reduces packing torque.
Preferably, described cast iron valve plate is spheroidal graphite cast iron, described cast iron valve plate for the stainless steel lining surfacing described in spheroidal graphite cast iron, stainless steel lining thickness be 0.2mm ~ 0.25mm.Sealing surface adopts on spheroidal graphite cast iron and adheres to stainless steel, and form sealing pair with rubber valve seat, stainless steel has the features such as material is wear-resisting, friction factor is little, thus reduce the packing torque of valve, the reduction of valve seal moment of torsion, also reduces the cost of drive unit, accomplishes energy-conservation.
Wherein, described valve shaft upper end passes from the upper valve port of valve body and is connected to realize the unlatching of cast iron valve plate 8 by key 1 with operating-controlling mechanism, simultaneously, lower filler 4 is provided with to seal between described cast iron valve shaft 3 and upper valve port, the guide cylinder that described lower filler 4 is fixedly connected with by relative valve body is positioned in the inner stopper of upper valve port, specifically, described guide cylinder upper end is provided with inner stopper formula stuffing box, in described stuffing box, be provided with filler and be located by jump ring, namely, jump ring is utilized to locate filler in stuffing box, in stuffing box, filler compresses again the filler of guide cylinder to inside and positions, while two-stage filler improves sealing effect, also reduce the pressure of positioning means, reduce difficulty of processing and design cost.
Described valve shaft is passed the center hole of cast iron valve plate 8 and is fixedly connected with by threaded circular taper pin with it, for controlling packing torque further, Lower shaft sleeve 9 is provided with between the lower end of described valve shaft and the lower valve port of valve body, simultaneously, inner stopper is formed in the lower valve port underpart of described cast iron valve body 2, be provided with in described inner stopper be set in valve shaft lower end combined seal ring 10 to realize sealed bottom, described combined seal ring carries out extruding by the rear blanking cover 13 be fixedly connected with valve body by filler pressing 11 and locates, simultaneously, after being provided with between described rear blanking cover 13 and valve body, blanking cover sealing gasket is to seal both.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a rubber valve seat butterfly valve, is characterized in that, comprises cast iron valve body, rubber valve seat, cast iron valve plate, and shaft type valve shaft, and the sealing surface of described cast iron valve plate is provided with stainless steel lining, and described stainless steel lining is overall sphere.
2. rubber valve seat butterfly valve as claimed in claim 1, it is characterized in that, described cast iron valve plate is spheroidal graphite cast iron.
3. rubber valve seat butterfly valve as claimed in claim 1, is characterized in that, described cast iron valve plate for the stainless steel lining surfacing described in spheroidal graphite cast iron, stainless steel lining thickness be 0.2mm ~ 0.25mm.
4. rubber valve seat butterfly valve as claimed in claim 1, it is characterized in that, described valve shaft upper end passes from the upper valve port of valve body and is connected to realize the unlatching of cast iron valve plate by key with operating-controlling mechanism, simultaneously, lower filler is provided with to seal between described cast iron valve shaft and upper valve port, the guide cylinder that described lower filler is fixedly connected with by relative valve body is positioned in the inner stopper of upper valve port, described guide cylinder upper end is provided with inner stopper formula stuffing box, is provided with filler and is located by its relative valve body by jump ring in described stuffing box.
5. rubber valve seat butterfly valve as claimed in claim 4, it is characterized in that, Lower shaft sleeve is provided with between the lower end of described valve shaft and the lower valve port of valve body, inner stopper is formed in the lower valve port underpart of described cast iron valve body, be provided with in described inner stopper be set in valve shaft lower end combined seal ring to realize sealed bottom, described combined seal ring carries out extruding by the rear blanking cover be fixedly connected with valve body by filler pressing and locates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521061799.1U CN205226401U (en) | 2015-12-15 | 2015-12-15 | Rubber valve seat butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521061799.1U CN205226401U (en) | 2015-12-15 | 2015-12-15 | Rubber valve seat butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226401U true CN205226401U (en) | 2016-05-11 |
Family
ID=55901468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521061799.1U Active CN205226401U (en) | 2015-12-15 | 2015-12-15 | Rubber valve seat butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087623A (en) * | 2016-11-23 | 2018-05-29 | 天津富赛克流体控制设备有限公司 | Novel valve seat |
-
2015
- 2015-12-15 CN CN201521061799.1U patent/CN205226401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087623A (en) * | 2016-11-23 | 2018-05-29 | 天津富赛克流体控制设备有限公司 | Novel valve seat |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |