CN204900859U - Regulation formula butterfly valve - Google Patents
Regulation formula butterfly valve Download PDFInfo
- Publication number
- CN204900859U CN204900859U CN201520606931.6U CN201520606931U CN204900859U CN 204900859 U CN204900859 U CN 204900859U CN 201520606931 U CN201520606931 U CN 201520606931U CN 204900859 U CN204900859 U CN 204900859U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- slide block
- valve
- stuffing box
- wall
- 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 creatively provides a regulation formula butterfly valve, including the valve rod, it is the pipe form, this valve rod upper end is fixed with the plug spiro union, lower extreme exit its hole of fixedly connected with and the co -linear seal cover of this valve rod axial lead, and attack threadedly on the interior pore wall of seal cover, it has two relative pressure release holes to open on the pipe wall of valve rod, is equipped with the stopper on the valve rod inner wall, and from last to being equipped with spring and slider down in proper order in the valve rod pipeline, the slider radius equals the internal diameter of valve rod, the lower terminal surface of slider is replaced the up end of stopper, and the slider is plugged up completely the pressure release hole, adjust the pole, pass the hole of seal cover with seal cover threaded connection, can be replaced the lower terminal surface of slider. The utility model discloses create regulation formula butterfly valve through rotating bolt jack -up slider, make the valve plate both sides form the intercommunication, reduce the pressure differential of valve both sides, the valve plate is more easy to be opened, reduces the loss of butterfly valve.
Description
Technical field
The invention belongs to butterfly valve technical field, especially relates to a kind of regulating type butterfly valve.
Background technique
Butterfly valve is Flap valve again, it is the simple modulating valve of a kind of structure, the butterfly valve that can be used for the switch control rule of low pressure pipeline medium refers to that closure member (flap or butterfly plate) is disk, rotate a kind of valve reaching open and close around valve shaft, valve can be used for the flowing controlling all kinds fluids such as air, water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.On pipeline, main rising is cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, rotates in valve rod around the axis of himself, thus reaches the object opening and closing or regulate.In prior art, when intake pressure is larger time, valve plate, owing to needing to bear larger hydraulic pressure, compares effort time it is opened, seriously have impact on the Experience Degree of user.
Summary of the invention
In view of this, the invention is intended to propose a kind of regulating type butterfly valve, comparatively large to solve butterfly valve plate both sides differential water pressures, affects the problem that valve plate is opened.
For achieving the above object, the technological scheme of the invention is achieved in that
A kind of regulating type butterfly valve, comprises
Valve rod, it is circular tube shaped; This valve rod upper end and plug are spirally connected fixing, and outlet port, lower end is fixedly connected with the stuffing box gland of its endoporus and this valve rod shaft axis conllinear, make the lower end exit radius of this valve rod be less than its pipe radius, and the inner hole wall of described stuffing box gland has attacked screw thread; The tube wall of described valve rod has two relative relief holes, the valve rod inwall of described relief hole bottom is provided with limiting stopper, and is provided with spring and slide block successively from top to bottom in valve rod pipeline; Described spring one end abuts with described plug, and the other end abuts with described slide block; Described slide block is cylindrical body, and its radius equals the internal diameter of described valve rod, and the outer wall of slide block supports the inwall of described valve rod, and the upper-end surface of described limiting stopper is supported in the lower end surface of this slide block, and described slide block blocks described relief hole completely;
Adjustable lever, its radius equals the internal bore radius of stuffing box gland, and screw thread attacked by the bar wall of this adjustable lever; Described adjustable lever, through the endoporus of described stuffing box gland, is threaded with stuffing box gland, can supports the lower end surface of described slide block.
Further, described stem internal is also provided with and has through hole rubber pad, and this rubber pad outer wall supports the inwall of described valve rod, and by the through hole on it and described adjustable lever interference fit.
Preferably, the outer wall of described adjustable lever is provided with seal convexity, abuts described rubber pad.
Further, the lower end of described slide block has the groove with its shaft axis conllinear, and the section radius of this groove equals the radius of described adjustable lever; Described adjustable lever, through the endoporus of described stuffing box gland, is threaded with stuffing box gland, can supports the bottom surface of described groove.
Relative to prior art, the regulating type butterfly valve described in the invention has following advantage:
Regulating type butterfly valve described in the invention, by rotating bolt jack-up slide block, makes valve plate both sides be formed and is communicated with, reduce the pressure difference of valve both sides, the unlatching that valve plate is more prone to, reduce the loss of butterfly valve, this design principle is simple, easy to operate, greatly improve working efficiency.
Accompanying drawing explanation
The accompanying drawing of the part of formation the invention is used to provide the further understanding to the invention, and the schematic description and description of the invention, for explaining the invention, does not form the improper restriction to the invention.In the accompanying drawings:
Fig. 1 is the regulating type butterfly valve valve rod sectional view described in the invention embodiment.
Description of reference numerals:
1-valve rod, 2-plug, 3-spring, 4-slide block, 5-groove, 6-adjustable lever, 7-seal convexity, 8-rubber pad, 9-stuffing box gland, 10-relief hole, 11-limiting stopper.
Embodiment
It should be noted that, when not conflicting, the embodiment in the invention and the feature in embodiment can combine mutually.
As shown in Figure 1, a kind of regulating type butterfly valve, comprises
Valve rod 1, it is circular tube shaped; This valve rod 1 upper end and plug 2 are spirally connected fixing, and outlet port, lower end is fixedly connected with the stuffing box gland 9 of its endoporus and this valve rod 1 shaft axis conllinear, make the lower end exit radius of this valve rod 1 be less than its pipe radius, and the inner hole wall of described stuffing box gland 9 has attacked screw thread; The tube wall of described valve rod 1 has two relative relief holes 10, valve rod 1 inwall of described relief hole 10 bottom is provided with limiting stopper 11, and is provided with spring 3 and slide block 4 from top to bottom successively in valve rod 1 pipeline; Described spring 3 one end abuts with described plug 2, and the other end abuts with described slide block 4; Described slide block 4 is cylindrical body, and its radius equals the internal diameter of described valve rod 1, and the outer wall of slide block 4 supports the inwall of described valve rod 1, and the upper-end surface of described limiting stopper 11 is supported in the lower end surface of this slide block 4, and described slide block 4 blocks described relief hole 10 completely; Under normal circumstances, slide block 4 to remain in position, and block relief hole 10 completely, the effect of limiting stopper 11 is exactly hold slide block 4, do not make slide block 4 under the ordering about of spring 3 active force, move downward, and loses the effect of blocking relief hole 10.
Adjustable lever 6, its radius equals the internal bore radius of stuffing box gland 9, and screw thread attacked by the bar wall of this adjustable lever 6; Described adjustable lever 6, through the endoporus of described stuffing box gland 9, is threaded with stuffing box gland 9, can supports the lower end surface of described slide block 4.When needing the pressure difference balancing butterfly valve both sides, utilize the rotation of adjustable lever 6, in the process that it is slowly threaded with stuffing box gland 9, by slide block 4 slowly jack-up, relief hole 10 is realized through, balance pressure is poor.
In order to increase the sealing of valve rod 1, described valve rod 1 inside is also provided with and has through hole rubber pad 8, and this rubber pad 8 outer wall supports the inwall of described valve rod 1, and by the through hole on it and described adjustable lever 6 interference fit.
More optimal design is, the outer wall of described adjustable lever 6 is provided with seal convexity 7, abuts described rubber pad 8.Due to the characteristic of quality of rubber materials, seal convexity 7 extrudes and embeds rubber pad 8, especially terminates at balance pressure reduction, needs to put down slide block 4 when continuing to block relief hole 10, enhances sealing effect.
The lower end of described slide block 4 has the groove 5 with its shaft axis conllinear, and the section radius of this groove equals the radius of described adjustable lever 6; Described adjustable lever 6, through the endoporus of described stuffing box gland 9, is threaded with stuffing box gland 9, can supports the bottom surface of described groove 5.Groove 5 has leading role, in the process that adjustable lever 6 moves upward, easily slight skew occurs, and groove 5 plays firm effect with stuffing box gland 9 at the two ends of adjustable lever 6, and adjustable lever 6 can be carried out upwards or downward moving along the inwall of groove 5.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; within all spirit in the invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the invention.
Claims (4)
1. a regulating type butterfly valve, is characterized in that: comprise
Valve rod (1), it is circular tube shaped; This valve rod (1) upper end and plug (2) are spirally connected fixing, outlet port, lower end is fixedly connected with the stuffing box gland (9) of its endoporus and this valve rod (1) shaft axis conllinear, make the lower end exit radius of this valve rod (1) be less than its pipe radius, and the inner hole wall of described stuffing box gland (9) has attacked screw thread; The tube wall of described valve rod (1) has two relative relief holes (10), valve rod (1) inwall of described relief hole (10) bottom is provided with limiting stopper (11), and in valve rod (1) pipeline, is provided with spring (3) and slide block (4) from top to bottom successively; Described spring (3) one end abuts with described plug (2), and the other end abuts with described slide block (4); Described slide block (4) is cylindrical body, its radius equals the internal diameter of described valve rod (1), the outer wall of slide block (4) supports the inwall of described valve rod (1), the upper-end surface of described limiting stopper (11) is supported in the lower end surface of this slide block (4), and described slide block (4) blocks described relief hole (10) completely;
Adjustable lever (6), its radius equals the internal bore radius of stuffing box gland (9), and screw thread attacked by the bar wall of this adjustable lever (6); Described adjustable lever (6), through the endoporus of described stuffing box gland (9), is threaded with stuffing box gland (9), can supports the lower end surface of described slide block (4).
2. regulating type butterfly valve according to claim 1, it is characterized in that: described valve rod (1) inside is also provided with and has through hole rubber pad (8), this rubber pad (8) outer wall supports the inwall of described valve rod (1), and by the through hole on it and described adjustable lever (6) interference fit.
3. regulating type butterfly valve according to claim 2, is characterized in that: the outer wall of described adjustable lever (6) is provided with seal convexity (7), abuts described rubber pad (8).
4. regulating type butterfly valve according to claim 1, is characterized in that: the lower end of described slide block (4) has and the groove of its shaft axis conllinear (5), and the section radius of this groove equals the radius of described adjustable lever (6); Described adjustable lever (6), through the endoporus of described stuffing box gland (9), is threaded with stuffing box gland (9), can supports the bottom surface of described groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606931.6U CN204900859U (en) | 2015-08-11 | 2015-08-11 | Regulation formula butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606931.6U CN204900859U (en) | 2015-08-11 | 2015-08-11 | Regulation formula butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204900859U true CN204900859U (en) | 2015-12-23 |
Family
ID=54923036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520606931.6U Expired - Fee Related CN204900859U (en) | 2015-08-11 | 2015-08-11 | Regulation formula butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204900859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662154A (en) * | 2018-05-22 | 2018-10-16 | 南通市力沛流体阀业有限公司 | One kind being conveniently operated type shut-off valve |
-
2015
- 2015-08-11 CN CN201520606931.6U patent/CN204900859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662154A (en) * | 2018-05-22 | 2018-10-16 | 南通市力沛流体阀业有限公司 | One kind being conveniently operated type shut-off 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: 20151223 Termination date: 20160811 |