CN101126459A - Assistant valve concealed type butterfly valve - Google Patents
Assistant valve concealed type butterfly valve Download PDFInfo
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- CN101126459A CN101126459A CNA2007101754114A CN200710175411A CN101126459A CN 101126459 A CN101126459 A CN 101126459A CN A2007101754114 A CNA2007101754114 A CN A2007101754114A CN 200710175411 A CN200710175411 A CN 200710175411A CN 101126459 A CN101126459 A CN 101126459A
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Abstract
The invention provides a butterfly valve which can realize the micro-regulation, has a concealed secondary valve and can be conveniently installed. The butterfly valve includes a valve body, a primary valve plate arranged in the valve body and an operating mechanism of the primary valve plate. Wherein a through hole is arranged in the center of the main valve plate, a secondary valve plate is rotatablely arranged in the through hole, a sealing element is arranged between the primary and the secondary valve plate, and a secondary valve plate operating mechanism is connected with the secondary valve plate. The invention has the positive effects that no by-pass valve is needed during the installation, which can save manpower, material source and effectively shorten the installation period and has high efficiency. When in use, the secondary valve plate firstly opens to decrease the pressure difference at the two ends of the valve, the primary valve plate is opened after the pressure difference at the two ends of the valve decreasing to a certain degree; in this way, the opening moment of the primary valve plate can be effectively reduced, also the water hammer impact during the direct opening of the primary valve plate can be avoided and the service life of the valve can be prolonged. In addition, by the regulation of the opening degree of the secondary valve plate, the medium flow can be regulated in minute quantities and thus the micro-regulation of the large-caliber butterfly valve becomes possible.
Description
Technical field
The present invention relates to a kind of butterfly valve, especially a kind of trace of can realizing is regulated, and assistant valve concealed type butterfly valve easy for installation.
Background technique
As shown in Figure 1, traditional butterfly valve structure generally includes valve body 1 and the valve plate 2 and the valve plate driving mechanism (not shown) that are rotatably installed in the valve body 1.During use, adjust driving mechanism valve plate 2 is rotated, play the effect of regulating flow and pressure.Under the situation that generally large-diameter butterfly valve or pressure are bigger, for reducing valve two ends pressure reduction, reduce to open moment of torsion, impact of water hammer causes damage when avoiding opening, and must add bypass valve 8 at the butterfly valve two ends.Will certainly increase human and material resources like this, increase workload, very inconvenience is installed, and installation period be long, efficient is low.
Summary of the invention
The technical problem that solves
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of trace of can realizing to regulate, and assistant valve concealed type butterfly valve easy for installation.
Technological scheme
For achieving the above object, the present invention adopts following technological scheme:
Assistant valve concealed type butterfly valve of the present invention comprises valve body and is installed in valve body interior main valve plate and main valve plate operating device.Wherein be provided with through hole, rotate in the through hole and be provided with auxiliary valve plate, be provided with Sealing between the major and minor valve plate, be connected with the auxiliary valve plate operating device on the described auxiliary valve plate at described main valve plate middle position.
Described main valve plate operating device comprises the tubulose main valve stem and the main valve plate driving head of fixedlying connected with the main valve plate, and described auxiliary valve plate operating device comprises the auxiliary valve rod and the auxiliary valve plate driving head of fixedlying connected with auxiliary valve plate, and described auxiliary valve rod is positioned at the tubulose main valve stem.
Beneficial effect
The advantage and the good effect of assistant valve concealed type butterfly valve of the present invention are: among the present invention, owing to also be provided with auxiliary valve plate in the main valve plate, so bypass valve needn't be installed on pipeline again, save human and material resources, and effectively shorten installation period, the efficient height.The present invention opens auxiliary valve plate in use earlier, to reduce the pressure reduction at valve two ends, after dropping to a certain degree, valve two ends pressure reduction opens the main valve plate again, can effectively reduce the unlatching moment of main valve plate like this, the impact of water hammer that causes in the time of simultaneously also can avoiding the main valve plate directly to open damages, and prolongs the working life of valve.
In addition,, can also adjust the flow of medium micro-ly, make the trace adjusting of large-diameter butterfly valve become possibility by adjusting the opening degree of auxiliary valve plate.
Description of drawings
Fig. 1 is the structural representation of traditional butterfly valve;
Fig. 2 is the structural representation of assistant valve concealed type butterfly valve of the present invention;
Fig. 3 is the longitudinal section of Fig. 2;
Schematic representation when Fig. 4 represents that the major and minor valve plate in the assistant valve concealed type butterfly valve of the present invention all is in closed condition;
Fig. 5 represents that the main valve plate in the assistant valve concealed type butterfly valve of the present invention is a closed condition, the schematic representation when auxiliary valve plate is in semi-open state;
Fig. 6 represents that the main valve plate in the assistant valve concealed type butterfly valve of the present invention is a closed condition, the schematic representation when auxiliary valve plate is in the complete opening state;
Fig. 7 represents that the main valve plate in the assistant valve concealed type butterfly valve of the present invention is in semi-open state, the schematic representation when auxiliary valve plate is in the complete opening state;
Schematic representation when Fig. 8 represents that the major and minor valve plate in the assistant valve concealed type butterfly valve of the present invention all is in opening state.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Referring to Fig. 2 and Fig. 3.Assistant valve concealed type butterfly valve of the present invention comprises valve body 1 and the main valve plate 3 and the main valve plate operating device that are installed in the valve body 1.Be provided with through hole at main valve plate 3 middle positions, rotate in the through hole and be provided with auxiliary valve plate 4, be connected with auxiliary valve plate operating device 9 on the auxiliary valve plate 4.The through-hole wall of main valve plate 3 is provided with circular groove, is mounted with retaining ring 10 in the circular groove, is fixed with seal ring 11 on the retaining ring 10.Auxiliary valve plate 4 is sealed and matched with seal ring 11.Also can between major and minor valve plate, be provided with Sealing by other modes.
Main valve plate operating device among the present invention comprises the tubulose main valve stem 5 and the main valve plate driving head 7 of fixedlying connected with main valve plate 3.The auxiliary valve plate operating device comprises the auxiliary valve rod 6 and the auxiliary valve plate driving head 9 of fixedlying connected with auxiliary valve plate 4.Auxiliary valve rod 6 is positioned at tubulose main valve stem 5, is beneficial to the overall volume that reduces valve like this.
, when using assistant valve concealed type butterfly valve of the present invention, adjust auxiliary valve plate driving head 9 earlier and open auxiliary valve plates 4, pressure release in advance to shown in Figure 8 as Fig. 4; After valve two ends pressure reduction drops to a certain degree, adjust main valve plate driving head 7 again and open main valve plate 3.Can effectively reduce the unlatching moment of main valve plate 3 like this, the impact of water hammer that causes in the time of also can avoiding the main valve plate directly to open simultaneously damages, and prolongs the working life of valve.
In the assistant valve concealed type butterfly valve of the present invention,, made things convenient for use in the main valve plate by the structural design of auxiliary valve plate is set.And when mounted, bypass valve needn't be installed separately on pipeline, save human and material resources, and effectively shorten installation period, the efficient height.In addition, the present invention in use if main valve plate 3 is maintained static, only adjusts the aperture of auxiliary valve plate 4 by auxiliary valve plate driving head 9, can realize the fine setting of flow, and this micro-regulatory function has realistic meanings in large-diameter butterfly valve.
More than be preferred forms of the present invention, according to content disclosed by the invention, some identical, replacement schemes that those of ordinary skill in the art can expect apparently all should fall into the scope of protection of the invention.
Claims (2)
1. assistant valve concealed type butterfly valve, comprise valve body (1) and be installed in valve body (1) interior main valve plate (3) and main valve plate operating device, it is characterized in that being provided with through hole at described main valve plate (3) middle position, rotate in the through hole and be provided with auxiliary valve plate (4), be provided with Sealing between the major and minor valve plate, described auxiliary valve plate is connected with the auxiliary valve plate operating device on (4).
2. assistant valve concealed type butterfly valve as claimed in claim 1, it is characterized in that described main valve plate operating device comprises the tubulose main valve stem (5) and the main valve plate driving head of fixedlying connected with main valve plate (3), described auxiliary valve plate operating device comprises the auxiliary valve rod (6) and the auxiliary valve plate driving head of fixedlying connected with auxiliary valve plate, and described auxiliary valve rod (6) is positioned at tubulose main valve stem (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101754114A CN101126459A (en) | 2007-09-29 | 2007-09-29 | Assistant valve concealed type butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101754114A CN101126459A (en) | 2007-09-29 | 2007-09-29 | Assistant valve concealed type butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101126459A true CN101126459A (en) | 2008-02-20 |
Family
ID=39094552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101754114A Pending CN101126459A (en) | 2007-09-29 | 2007-09-29 | Assistant valve concealed type butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101126459A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628523A (en) * | 2012-04-24 | 2012-08-08 | 卓旦春 | Pilot type control valve |
| CN104455484A (en) * | 2013-09-17 | 2015-03-25 | 阿尔斯通技术有限公司 | Butterfly valve arrangement |
| CN106051180A (en) * | 2016-08-16 | 2016-10-26 | 铁岭天工阀门科技有限公司 | Large-caliber butterfly valve provided with main butterfly plate and auxiliary butterfly plate |
| CN111795159A (en) * | 2020-07-14 | 2020-10-20 | 浙江大学 | Butterfly valve with double-stage flow regulation function and method thereof |
| CN111853306A (en) * | 2020-07-24 | 2020-10-30 | 浙江大学 | Valve core assembly capable of changing inherent valve characteristics, regulating valve and flow control method |
-
2007
- 2007-09-29 CN CNA2007101754114A patent/CN101126459A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628523A (en) * | 2012-04-24 | 2012-08-08 | 卓旦春 | Pilot type control valve |
| CN102628523B (en) * | 2012-04-24 | 2014-12-03 | 卓旦春 | Pilot type control valve |
| CN104455484A (en) * | 2013-09-17 | 2015-03-25 | 阿尔斯通技术有限公司 | Butterfly valve arrangement |
| CN104455484B (en) * | 2013-09-17 | 2019-06-14 | 通用电器技术有限公司 | Butterfly valve arrangement |
| CN106051180A (en) * | 2016-08-16 | 2016-10-26 | 铁岭天工阀门科技有限公司 | Large-caliber butterfly valve provided with main butterfly plate and auxiliary butterfly plate |
| CN111795159A (en) * | 2020-07-14 | 2020-10-20 | 浙江大学 | Butterfly valve with double-stage flow regulation function and method thereof |
| CN111853306A (en) * | 2020-07-24 | 2020-10-30 | 浙江大学 | Valve core assembly capable of changing inherent valve characteristics, regulating valve and flow control method |
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