CN203146949U - Butterfly type safety valve - Google Patents
Butterfly type safety valve Download PDFInfo
- Publication number
- CN203146949U CN203146949U CN 201320163379 CN201320163379U CN203146949U CN 203146949 U CN203146949 U CN 203146949U CN 201320163379 CN201320163379 CN 201320163379 CN 201320163379 U CN201320163379 U CN 201320163379U CN 203146949 U CN203146949 U CN 203146949U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly
- mounting disc
- spring
- spiral spring
- 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
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Abstract
The utility model relates to a butterfly type safety valve which comprises a butterfly valve and a pre-tightening force setting mechanism. The butterfly valve comprises a valve body, a valve seat, a butterfly board and a valve rod. The pre-tightening force setting mechanism is mainly composed of a spiral spring, an installation disc, a bevel gear, a hand wheel and a spring adjusting rod. The installation disc is fixedly arranged at the upper end of the valve body, the bevel gear is of a circular ring structure, and is arranged in an annular groove of the installation disc through a pressing ring, the bevel gear and the installation disc are in clearance fit with the pressing ring, a rotating shaft of the hand wheel is arranged on the installation disc, a bevel wheel which meshes with the bevel gear is manufactured on the end portion of the rotating shaft, the spring adjusting rod is fixedly arranged in the upper plane of the bevel gear, the lower end of the spiral spring is fixedly connected with the valve rod, and the upper end of the spiral spring is fixedly connected with the spring adjusting rod. Sealing pre-tightening force is set for the butterfly board of the butterfly valve through elastic force of the spiral spring. The butterfly type safety valve has the advantages of being small in discharge flow resistance, large in discharge quantity and small in recoil force, enabling set pressure to be conveniently adjusted and being visible in on state and the like, and is suitable for overpressure protection devices of pipelines or pressure pressed containers.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of safety valve.The utility model is applicable to the overpressure protector of pipeline or pressure pressure vessel.
Background technique
Existing safety valve is generally the angie type structure; be the valve body import with outlet at an angle of 90; valve seat is vertically fixed on body cavity; spring is spiral compression spring; utilize its compressive force that flap is pressed on and realize on the sealing surface of seat being sealed and matched, when valve body suction side pressure medium rose to the impacting force of spring, pressure medium was pushed the flap discharge medium open; prevent the pressurized container superpressure, the protection pressure vessel safety.Its major defect be since valve body import and outlet at an angle of 90, the media discharge flow resistance is big, discharge amount is little, the flap recoil force is big, Set pressure adjustment trouble, opening state are not visible.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, provides a kind of employing level to install, and the media discharge flow resistance is little, discharge amount is big, recoil force is little, Set pressure is easy to adjust, the obvious visual butterfly safety valve of opening state.
The technical solution of the utility model comprises butterfly valve and pretightening force setting mechanism, butterfly valve comprises valve body, valve seat, butterfly plate, valve rod, mainly be that the pretightening force setting mechanism is by spiral spring, mounting disc, angular wheel, handwheel and spring adjustable lever are formed, mounting disc is fixedly mounted on the valve body upper end, angular wheel is circle structure, be installed in by pressure ring in the circular groove of mounting disc, between angular wheel and mounting disc and the pressure ring movingly, the rotating shaft of handwheel is installed in the mounting disc, this roller end is shaped on and the intermeshing helical gear of angular wheel, the spring adjustable lever is fixedly mounted in the last plane of angular wheel, fixedlying connected with valve rod in the lower end of spiral spring, fixedlys connected with the spring adjustable lever in the upper end.
In above technological scheme, pressure ring is made up of inner pressure ring and outer press ring, and inner pressure ring is fixedly mounted on the inboard of mounting disc circular groove by housing screw, and outer press ring is fixedly mounted on the outside of mounting disc circular groove.
In above technological scheme, the spring adjustable lever is made up of adjusting screw rod and adjusting cross bar, the adjusting screw rod lower end is fixedly mounted on the mounting disc plane between inner pressure ring and the outer press ring, fixedly connected with an end of regulating cross bar in the adjusting screw rod upper end, the other end of regulating cross bar is fixedlyed connected with the upper end of spiral spring.
The elastic force that the utility model has the advantages that the employing spiral spring sets the sealing pretightening force for the butterfly plate of butterfly valve, when pressure medium surpasses the sealing pretightening force of butterfly valve, butterfly plate is opened row side's pressure medium, and its discharge flow resistance is little, discharge amount is big, recoil force is little, Set pressure is easy to adjust, opening state is obviously visual.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Butterfly safety valve as shown in Figure 1, comprise butterfly valve and pretightening force setting mechanism, butterfly valve comprises valve body 1, valve seat 5, butterfly plate 4, valve rod 3, butterfly plate 4 is fixedly mounted on the valve rod 3 by pin 2, be provided with seal ring 6 between valve rod 3 and the valve body 1, the pretightening force setting mechanism is by spiral spring 7, mounting disc 8, angular wheel 9, handwheel 17 and spring adjustable lever are formed, mounting disc 8 is fixedly mounted on valve body 1 upper end, angular wheel 9 is circle structure, be installed in by pressure ring in the circular groove of mounting disc 8, between angular wheel 9 and mounting disc 8 and the pressure ring movingly, namely between the internal groove side wall of the inner round wall of angular wheel 9 and mounting disc 8 circular grooves, between the last plane and pressure ring lower plane of angular wheel 9, being activity between the bottom plane of the lower plane of angular wheel 9 and mounting disc 8 circular grooves is connected.The rotating shaft 18 of handwheel 17 is installed in the mounting disc 8, this rotating shaft 18 axial restraint in mounting disc 8 connects, radially flexibly connect, rotating shaft 18 ends are shaped on and angular wheel 9 intermeshing helical gears, the spring adjustable lever is fixedly mounted in the last plane of angular wheel 9, fixedlying connected with valve rod 3 in the lower end of spiral spring 7, fixedlys connected with the spring adjustable lever in the upper end.
Pressure ring is made up of inner pressure ring 11 and outer press ring 10, and inner pressure ring 11 is fixedly mounted on the inboard of mounting disc 8 circular grooves by housing screw 12, and outer press ring 11 is fixedly mounted on the outside of mounting disc 8 circular grooves.Be that inner pressure ring 11 is fitted in planar annular place in the angular wheel 9, outer press ring 10 is fitted in place, angular wheel 9 outer ring planes.
The spring adjustable lever is made up of adjusting screw rod 15 and adjusting cross bar 14, adjusting screw rod 15 lower ends are fixedly mounted on mounting disc 8 planes between inner pressure ring 11 and the outer press ring 10, adjusting screw rod 15 is fixedlyed connected by tightening nut 16 with mounting disc 8, fixedly connected with an end of regulating cross bar 14 in adjusting screw rod 15 upper ends, the other end of regulating cross bar 14 is fixedlyed connected with the upper end of spiral spring 7.When rotating handwheel 17, rotating shaft 18 transmission angular wheels 9, adjusting screw rod 15, adjusting cross bar 14 drive the rotation of spiral spring 7 upper ends, by the sealing pretightening force between valve rod 3 change butterfly plates 4 and the valve seat 5.
Valve rod 3 fixed installation stop nuts 13 in spiral spring 7 upper ends.Butterfly valve adopts three eccentric or two eccentric structures, can select according to the operating mode needs, belongs to known technology, is not described in detail.
Claims (3)
1. butterfly safety valve, comprise butterfly valve and pretightening force setting mechanism, butterfly valve comprises valve body (1), valve seat (5), butterfly plate (4), valve rod (3), it is characterized in that the pretightening force setting mechanism is by spiral spring (7), mounting disc (8), angular wheel (9), handwheel (17) and spring adjustable lever are formed, mounting disc (8) is fixedly mounted on valve body (1) upper end, angular wheel (9) is circle structure, be installed in by pressure ring in the circular groove of mounting disc (8), between angular wheel (9) and mounting disc (8) and the pressure ring movingly, the rotating shaft (18) of handwheel (17) is installed in the mounting disc (8), rotating shaft (18) end is shaped on and the intermeshing helical gear of angular wheel (9), the spring adjustable lever is fixedly mounted in the last plane of angular wheel (9), fixedlying connected with valve rod (3) in the lower end of spiral spring (7), fixedlys connected with the spring adjustable lever in the upper end.
2. butterfly safety valve according to claim 1, it is characterized in that pressure ring is made up of inner pressure ring (11) and outer press ring (10), inner pressure ring (11) is fixedly mounted on the inboard of mounting disc (8) circular groove by housing screw (12), and outer press ring (11) is fixedly mounted on the outside of mounting disc (8) circular groove.
3. butterfly safety valve according to claim 2, it is characterized in that the spring adjustable lever by adjusting screw rod (15) and regulate cross bar (14) and form, adjusting screw rod (15) lower end is fixedly mounted on mounting disc (8) plane between inner pressure ring (11) and the outer press ring (10), fixedly connected with an end of regulating cross bar (14) in adjusting screw rod (15) upper end, the other end of regulating cross bar (14) is fixedlyed connected with the upper end of spiral spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163379 CN203146949U (en) | 2013-03-19 | 2013-03-19 | Butterfly type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163379 CN203146949U (en) | 2013-03-19 | 2013-03-19 | Butterfly type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146949U true CN203146949U (en) | 2013-08-21 |
Family
ID=48974473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320163379 Expired - Fee Related CN203146949U (en) | 2013-03-19 | 2013-03-19 | Butterfly type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339445A (en) * | 2017-06-09 | 2017-11-10 | 东台友铭船舶配件有限公司 | A kind of ship assembling controls formula dish valve with two-way gear |
| CN110206923A (en) * | 2019-07-12 | 2019-09-06 | 中国计量大学 | A kind of gas pressure maintaining valve |
-
2013
- 2013-03-19 CN CN 201320163379 patent/CN203146949U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339445A (en) * | 2017-06-09 | 2017-11-10 | 东台友铭船舶配件有限公司 | A kind of ship assembling controls formula dish valve with two-way gear |
| CN110206923A (en) * | 2019-07-12 | 2019-09-06 | 中国计量大学 | A kind of gas pressure maintaining valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130821 Termination date: 20190319 |