CN203477341U - Central-line rubber lined butterfly valve for medium-pressure pipeline - Google Patents
Central-line rubber lined butterfly valve for medium-pressure pipeline Download PDFInfo
- Publication number
- CN203477341U CN203477341U CN201320397310.2U CN201320397310U CN203477341U CN 203477341 U CN203477341 U CN 203477341U CN 201320397310 U CN201320397310 U CN 201320397310U CN 203477341 U CN203477341 U CN 203477341U
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- Prior art keywords
- valve
- valve body
- rubber
- pressure pipeline
- center line
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- Expired - Fee Related
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Abstract
The utility model discloses a central-line rubber lined butterfly valve for a medium-pressure pipeline. The central-line rubber lined butterfly valve comprises a valve body, a valve rod and a rubber valve base, wherein a valve plate is arranged in the valve body; an upper shaft hole and a lower shaft hole are arranged in the valve body; the lower shaft hole is a blind hole; the valve rod passes through the upper shaft hole, the valve plate and the lower shaft hole in turn; rubber valve bases are respectively and directly vulcanized at the lower edge of the upper shaft hole and the upper edge of the lower shaft hole in the inner surface of the valve body; contact surfaces of the rubber valve bases and the valve plate is arc surfaces; a limiting bulge is arranged on the surface on the other side of the arc surface of the rubber valve base; at least two flanges are arranged at the joints of the outer surfaces of the two side walls of the valve base and the flange; and two annular bulges are arranged on the periphery in a valve rod mounting hole of the valve base. On the basis of unique design adopted by the utility model, the pressure range of the traditional central-line rubber lined butterfly valve is broken through, so that the application of the central-line rubber lined butterfly valve is expanded to medium-pressure field and reaches 2.5MPa.
Description
Technical field
The utility model relates to valve arrangement field, more particularly, relates to a kind of center line butterfly valve for pressure pipeline.
Background technique
Center line butterfly valve nominal pressure traditional on market is no more than 1.6Mpa, and along with scientific and technological progress, pipeline pressure further improves, and existing low pressure butterfly valve product can not meet user's demand.
Model utility content
Technical problem to be solved in the utility model is, overcomes the deficiencies in the prior art, and a kind of center line butterfly valve for pressure pipeline is provided.
A kind of center line butterfly valve for pressure pipeline of the utility model, by following technical proposals, be achieved, comprise valve body, valve rod and rubber valve seat, valve plate is set in valve body, upper gland and bottom axis hole are set in valve body, described bottom axis hole is blind hole, and valve rod is successively through upper gland, valve plate and bottom axis hole; The top edge of the lower limb of valve interior surface upper gland and bottom axis hole is direct vulcanized rubber valve seat respectively, the surface of contact that rubber valve seat contacts with valve plate is arc surface, rubber valve seat arc surface opposite side surface arranges spacing preiection, valve seat bi-side outer surface and flange connections arrange at least twice flange, and the valve rod mounting hole inner peripheral surface of valve seat arranges two annular projections.
Valve body is wafer type valve body or lug type valve body.
The top of valve body neck is inverted cone shape, and the bottom of valve body neck is frustum shape.
Valve rod and valve plate pass through spline joint.The valve stem part diameter of spline lower end is less than the valve stem part diameter of spline upper end.
Center line butterfly valve for pressure pipeline axially prevents blowing out the form that structure adopts U-shaped split washer and gland to be connected by screw.
Compared with prior art, the beneficial effects of the utility model are:
(1) on market, traditional center line butterfly valve nominal pressure is no more than 1.6Mpa, along with scientific and technological progress, pipeline pressure further improves, existing low pressure butterfly valve product can not meet user's demand, the utility model is by unique design, break through the pressure range of traditional center line butterfly valve, made the application extension of center line butterfly valve to middle pressure field, reached 2.5 Mpa.
(2) valve body adopts wafer type or lug type valve body, and valve body neck portion design top is inverted cone, is convenient to drive unit and is connected with the bolt of upper flange; Bottom, for frustum designs, has enough spaces to arrange valve body typefounding on the one hand, has strengthened on the other hand the join strength of neck and valve body; Valve body lower portion axis hole, for blind hole designs, reduces leakage point.
(3) the general employing of the combination of traditional center line butterfly valve valve body and valve seat has skeleton or exoskeletal line with rubber removable valve stand structure, bears pressure low; Rubber valve seat of the present utility model adopts directly sulfuration to the mode of valve body, and intermediate portion design spacing preiection, has increased bonded area, has strengthened combination force, has guaranteed normally to use under the pressure of 2.5 Mpa.
(4) valve seat bi-side and flange connections have multiple tracks flange, when compressing with pipeline coupling flange, form vacuum seal endless belt between flange and flange, guarantee sealing effect; The valve rod mounting hole of valve seat is provided with several annular projections, multiple-sealed, has improved pressure-bearing and the sealability of butterfly valve.
(5) sealing means of traditional centre-pivoted butterfly valve butterfly plate sealing surface and end face and valve base sealing band is generally plane and plane contact sealing, rely on the compressive strain of valve seat rubber to guarantee sealing effect, when nominal pressure increases, for reaching sealing effect, will significantly increase valve seat decrement, the keying moment of butterfly valve is increased, and the sealing surface wear aggravation of valve seat and valve plate, causes decline the working life of butterfly valve; Butterfly valve butterfly plate of the present utility model and sealing surface of seat are through precision machined arc surface, on the one hand in opening-closing process valve plate level and smooth enter valve seat arc surface sealing strip, reduce the keying moment of butterfly valve, on the other hand, under closed condition, when valve plate is under pressure, to in pressurized direction, there is a microdisplacement, the decrement of valve seat is further increased, and therefore, this structure can guarantee sealing effect under 2.5Mpa pressure in the situation that valve seat decrement is smaller.
(6) traditional centre-pivoted butterfly valve valve rod and valve plate be connected to being connected of pin or right angle square key, connecting precision can not guarantee, causes in addition the diameter of valve rod large; Valve rod of the present utility model and valve plate be connected to spline joint, connect precision high, transmitting torque is large, and has guaranteed the valve stem part diameter of valve rod spline lower end, pressure-bearing improves.
(7) traditional centre-pivoted butterfly valve is generally the design of double stub shaft, the bad assurance of accuracy of alignment, and valve rod of the present utility model is the design of single valve bar, integral rigidity is good.
(8) traditional centre-pivoted butterfly valve axially the anti-structure that blows out be the form of back-up ring combination for shaft block ring, pad, hole, circlip groove processed complex, after installing, axially gap length can not be controlled; The form that the utility model has adopted U-shaped split washer and gland to be connected by screw, easy for installation, processing is simple, large with valve body join strength, and anti-blowing out acts on obviously.
Accompanying drawing explanation
Fig. 1 is butterfly valve plan view of the present utility model;
Fig. 2 is butterfly valve side view of the present utility model;
Fig. 3 is the partial enlarged drawing at A place in Fig. 2;
Fig. 4 is butterfly valve plan view of the present utility model;
Fig. 5 is valve body vulcanized rubber valve seat schematic diagram;
Fig. 6 is sealing surface of seat circular arc and flange schematic diagram;
Fig. 7 is the partial enlarged drawing of B place valve rod mounting hole in Fig. 5;
Fig. 8 is split washer schematic diagram.
In figure:
1. gland 2. split washer 3. spline 4. short sleeve 5. valve rods
6. valve body 7. major axis overlap 8. rubber valve seat 8-1. the first flanges
8-2. the second flange 8-3. the 3rd flange 8-4. spacing preiection
8-5. arc surface 8-6. annular projection
9. valve plate 10. Lower shaft sleeve 11. screws
12. cone shape 13. frustum shapes.
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 is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1-2, a kind of center line butterfly valve for pressure pipeline, comprise valve body 6, valve rod 5 and rubber valve seat 8, valve plate 9 is set in valve body, upper gland and bottom axis hole are set in valve body, and (in upper gland, two ends arrange respectively major axis cover 7 and short sleeve 4, Lower shaft sleeve 10 is set in the axis hole of bottom), described bottom axis hole is blind hole, valve rod is successively through upper gland, valve plate and bottom axis hole, the top edge of the lower limb of valve interior surface upper gland and bottom axis hole is direct vulcanized rubber valve seat respectively, as shown in Figure 6, the surface of contact that rubber valve seat contacts with valve plate is arc surface 8-5, rubber valve seat arc surface opposite side surface arranges spacing preiection 8-4, valve seat bi-side outer surface and flange connections arrange at least twice flange and (are illustrated as three road flanges: the first flange 8-1, the second flange 8-2, the 3rd flange 8-3), (Fig. 7 is the partial enlarged drawing of B place valve rod mounting hole in Fig. 5) as shown in Figure 7, the valve rod mounting hole inner peripheral surface of valve seat arranges two annular projection 8-6.
Valve body is wafer type valve body or lug type valve body.As shown in Figure 1, the top of valve body neck is inverted cone shape 12, and the bottom of valve body neck is frustum shape 13.Valve body neck portion design top is inverted cone, is convenient to drive unit and is connected with the bolt of upper flange; Bottom, for frustum designs, has enough spaces to arrange valve body typefounding on the one hand, has strengthened on the other hand the join strength of neck and valve body; Valve body lower portion axis hole, for blind hole designs, reduces leakage point.
As shown in Figure 2, valve rod is connected by spline 3 with valve plate.The valve stem part diameter of spline lower end is less than the valve stem part diameter of spline upper end.Spline joint, connects precision high, and transmitting torque is large, and has guaranteed the valve stem part diameter of valve rod spline lower end, and pressure-bearing improves.
For the center line butterfly valve of pressure pipeline is axially anti-, blow out structure if A place in Fig. 2 is as shown in Fig. 3, adopt U-shaped split washer 2 by screw 11(, to see Fig. 4 with gland 1) form that is connected, U-shaped split washer is as shown in Figure 8.Easy for installation, processing is simple, large with valve body join strength, and anti-blowing out acts on obviously.
The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; do not departing under the prerequisite of 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. for a center line butterfly valve for pressure pipeline, it is characterized in that, comprise valve body, valve rod and rubber valve seat, valve plate is set in valve body, upper gland and bottom axis hole are set in valve body, and described bottom axis hole is blind hole, and valve rod is successively through upper gland, valve plate and bottom axis hole; The top edge of the lower limb of valve interior surface upper gland and bottom axis hole is direct vulcanized rubber valve seat respectively, the surface of contact that rubber valve seat contacts with valve plate is arc surface, rubber valve seat arc surface opposite side surface arranges spacing preiection, valve seat bi-side outer surface and flange connections arrange at least twice flange, and the valve rod mounting hole inner peripheral surface of valve seat arranges two annular projections.
2. the center line butterfly valve for pressure pipeline according to claim 1, is characterized in that, valve body is wafer type valve body or lug type valve body.
3. the center line butterfly valve for pressure pipeline according to claim 1, is characterized in that, the top of valve body neck is inverted cone shape, and the bottom of valve body neck is frustum shape.
4. the center line butterfly valve for pressure pipeline according to claim 1, is characterized in that, valve rod and valve plate pass through spline joint.
5. the center line butterfly valve for pressure pipeline according to claim 4, is characterized in that, the valve stem part diameter of spline lower end is less than the valve stem part diameter of spline upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320397310.2U CN203477341U (en) | 2013-07-05 | 2013-07-05 | Central-line rubber lined butterfly valve for medium-pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320397310.2U CN203477341U (en) | 2013-07-05 | 2013-07-05 | Central-line rubber lined butterfly valve for medium-pressure pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477341U true CN203477341U (en) | 2014-03-12 |
Family
ID=50225672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320397310.2U Expired - Fee Related CN203477341U (en) | 2013-07-05 | 2013-07-05 | Central-line rubber lined butterfly valve for medium-pressure pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477341U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322213A (en) * | 2013-07-05 | 2013-09-25 | 杨元亭 | Center glue-lined butterfly valve for medium-pressure pipeline |
| 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 |
-
2013
- 2013-07-05 CN CN201320397310.2U patent/CN203477341U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322213A (en) * | 2013-07-05 | 2013-09-25 | 杨元亭 | Center glue-lined butterfly valve for medium-pressure pipeline |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160602 Address after: 300000, Tianjin New Technology Industrial Park, Beichen science and Technology Industrial Park Hongqi Road West Patentee after: WorldCom metal products (Tianjin) Co., Ltd. Address before: 300000 Tianjin City, Beichen science and Technology Park of Beichen District No. 26 Jing Li Lu Patentee before: Yang Yuanting |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300000, Tianjin New Technology Industrial Park, Beichen science and Technology Industrial Park Hongqi Road West Patentee after: WorldCom metal products (Tianjin) Limited by Share Ltd Address before: 300000, Tianjin New Technology Industrial Park, Beichen science and Technology Industrial Park Hongqi Road West Patentee before: WorldCom metal products (Tianjin) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20190705 |