CN101929553A - Equal-percent butterfly valve and control method thereof - Google Patents
Equal-percent butterfly valve and control method thereof Download PDFInfo
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- CN101929553A CN101929553A CN 201010283140 CN201010283140A CN101929553A CN 101929553 A CN101929553 A CN 101929553A CN 201010283140 CN201010283140 CN 201010283140 CN 201010283140 A CN201010283140 A CN 201010283140A CN 101929553 A CN101929553 A CN 101929553A
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Abstract
The invention relates to a butterfly valve, in particular to an equal-percent butterfly valve and a control method thereof. The invention mainly aims to overcome the defect of poor control precision of the equal-percent in the prior art so as to design an equal-percent butterfly valve which is close to a small-caliber equal-percent ball valve in the control precision. The equal-percent butterfly valve comprises a valve body, a shaft rod and a dish plate, the dish plate is provided with an upper valve shaft and a lower valve shaft up and down, and the shaft rod is connected with the upper valve shaft; the equal-percent butterfly valve is characterized in that a front baffle and a back baffle are fixedly arranged in pipelines in the front and at the back of the dish plate, wherein the front baffle and the back baffle are arranged on the valve body, but not on the dish plate; and the front baffle and the back baffle must be arranged front and back; thus the effect of equal percent is realized.
Description
Technical field
The present invention relates to a kind of butterfly valve, relate in particular to a kind of equal-percent butterfly valve and controlling method thereof.
Background technique
Modulating valve can be divided into by the stroke characteristics: straight journey and angle stroke.The angle stroke comprises: butterfly valve, ball valve, camflex valve, full-function surperlight type modulating valve.The relative travel of equal percentage characteristics and the relative discharge relation of not forming straight line, the unit stroke changes the flow that the variation of caused flow puts therewith and is directly proportional on the every bit of stroke, and the percentage of changes in flow rate equates.So its advantage is a flow hour, changes in flow rate is little, and when flow was big, then changes in flow rate was big, just on different opening, had identical degree of regulation.What application was more at present is the equal percentage ball valve.But be applied to the equal percentage characteristics on the butterfly valve, because this body structure of butterfly valve has essence different with ball valve, so equal percentage is used not smooth.
The Dynamic Equilibrium Electrical Control Butterfly Gate of China Patent No. 200520102631.0 for example, its main contents are: comprise angle stroke electric actuator, valve shaft, valve plate and valve body, the power unit of angle stroke electric actuator is connected with valve plate by valve shaft, also respectively is provided with a port plate on two faces of described valve plate.The motorized adjustment butterfly valve that port plate is equipped with in employing is a kind of mortor operated valve with equal percent regulating characteristic, and controlling performance is good, uses very flexible.But it mainly is to improve on the dish version, and is different fully with the control mode of equal percentage ball valve, and therefore the effect that reaches also differs to some extent with the equal percentage ball valve.
Summary of the invention
The present invention mainly is at shortcomings such as equal percentage control accuracy differences in the prior art, has designed the equal-percent butterfly valve that a kind of control accuracy approaches small-bore equal percentage ball valve.
Above-mentioned technical problem of the present invention is implemented by the following technical programs.
Equal-percent butterfly valve comprises valve body, axostylus axostyle and dish plate, and dish plate upper and lower settings has last valve shaft 7 and lower valve shaft, and axostylus axostyle is connected with last valve shaft, it is characterized in that flow-stopping plate and back flow-stopping plate before being set with in the pipeline before and after the dish plate.Flow-stopping plate and back flow-stopping plate and were arranged on the valve body, but not are arranged on the dish plate before flow-stopping plate was divided into, the corresponding setting before and after it is necessary for, its effect very to the effect that has reached equal percentage.
Described going up between valve shaft and the valve body is provided with sealing pair.
As preferably, be provided with double-sealing in the described sealing pair.Double sealing structure better forms sealing, and double-sealing is a dual torus.
As preferably, described before flow-stopping plate and afterwards the baffle plate structure is identical, and be that benchmark becomes the center to be symmetrical arranged with dish plate central point.According to the characteristic of butterfly valve itself, be the characteristic that the anti-mirror image in center is symmetrical arranged compound its equal percentage instruction with the dish plate.
As preferably, described before flow-stopping plate and back flow-stopping plate include flow blocking piece and pod apertures.
As preferably, the pod apertures horizontal axis is symmetrical arranged.
As preferably, the radius of arc R1 of flow blocking piece inside is greater than or equal to the radius R 2 of butterfly plate.
As preferably, the pod apertures external frame is channelizing line (13), and channelizing line is benchmark with the medial axis, and a side is a semi-circle, and a side is multi-line section or curved section.
As preferably, channelizing line is laterally zygomorphic curved section.
The equal-percent butterfly valve controlling method, its step comprises: axostylus axostyle angle of attachment stroke electric actuator, before flow-stopping plate be fixed on the valve body with the back flow-stopping plate, by the switch angle of control dish plate, form the flow control of equal percentage characteristics with the pod apertures on preceding flow-stopping plate, the back flow-stopping plate.Flow-stopping plate fixedly installs, and the pod apertures on the flow-stopping plate only needs the instruction flow-stopping plate can finish whole equal percentage setting for fixedly installing.Flow-stopping plate is because be installed on the valve body, so its dismounting is also very convenient.Butterfly plate begins to regulate when closing, and butterfly plate rotates toward semi-circle channelizing line opposite direction.
In sum, the present invention compares with prior art and has following advantage.
The present invention is simple in structure, be easy to realize, with respect to the equal percentage ball valve, on the bigger butterfly valve of relative size, also realized the control of equal percentage, and with respect to flow-stopping plate directly is installed on the dish plate, be mounted to the flow-stopping plate that anti-mirror image is provided with respectively before and after valve body, the equal percentage effect is greatly improved.Maintenance of the present invention is simple before also, because the flow-stopping plate of equal percentage control is arranged on the valve body, looks after and guides more simple.
Description of drawings
Fig. 1 is a front view sectional drawing of the present invention.
Fig. 2 is side view cross section figure of the present invention.
Fig. 3 is the front view of preceding flow-stopping plate of the present invention.
Fig. 4 is the side view of preceding flow-stopping plate of the present invention.
Fig. 5 is the front view of flow-stopping plate before the another kind of the present invention.
Number in the figure is: 1, axostylus axostyle, 2, sealing pair, 3, valve body, 4, preceding flow-stopping plate, 5, the dish plate, 6, the back flow-stopping plate, 7, go up valve shaft, 8, double-sealing, 9, lower valve shaft, 11, flow blocking piece, 12, pod apertures, 13, channelizing line.
Embodiment
Below by embodiment, in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
As shown in Figure 1 and Figure 2, equal-percent butterfly valve of the present invention comprises valve body 3, axostylus axostyle 1 and dish plate 5, and dish plate upper and lower settings has last valve shaft 7 and lower valve shaft 9, and axostylus axostyle is connected with last valve shaft, it is characterized in that flow-stopping plate 4 and back flow-stopping plate 6 before being set with in the pipeline before and after the dish plate.Be provided with sealing pair 2 between last valve shaft and the valve body.Be provided with double-sealing 8 in the sealing pair.
Before flow-stopping plate and afterwards the baffle plate structure is identical, and be that the anti-mirror image in center is symmetrical arranged with the dish plate.
As shown in Figure 3, Figure 4, preceding flow-stopping plate and back flow-stopping plate include flow blocking piece 11 and pod apertures 12.Pod apertures is an equal percentage shape shown in Figure 4.
The step of equal-percent butterfly valve controlling method comprises: axostylus axostyle angle of attachment stroke electric actuator, preceding flow-stopping plate is fixed on the valve body with the back flow-stopping plate, by the switch angle of control dish plate, form the flow control of equal percentage characteristics with the pod apertures on preceding flow-stopping plate, the back flow-stopping plate.
Horizontal axis when installing on the flow blocking piece and butterfly plate butterfly plate axis are to vertical, and just vertical with valve rod, mounting type specifically can use mounting structures such as screw, if different control characteristics can directly be changed flow blocking piece, perhaps revises the baffle hole of the inside.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (9)
1. equal-percent butterfly valve, comprise valve body (3), axostylus axostyle (1) and dish plate (5), dish plate upper and lower settings has last valve shaft (7) and lower valve shaft (9), and axostylus axostyle is connected with last valve shaft, it is characterized in that, be set with preceding flow-stopping plate (4) and back flow-stopping plate (6) in the pipeline before and after the dish plate.
2. equal-percent butterfly valve according to claim 1 is characterized in that, described going up between valve shaft and the valve body is provided with sealing pair (2).
3. equal-percent butterfly valve according to claim 2 is characterized in that, is provided with double-sealing (8) in the described sealing pair.
4. according to claim 1 or 2 or 3 described equal-percent butterfly valves, it is characterized in that, described before flow-stopping plate and afterwards the baffle plate structure is identical, and be that benchmark becomes the center to be symmetrical arranged with dish plate central point.
5. equal-percent butterfly valve according to claim 4 is characterized in that, described preceding flow-stopping plate and back flow-stopping plate include flow blocking piece (11) and pod apertures (12).
6. equal-percent butterfly valve according to claim 5 is characterized in that, described pod apertures horizontal axis is symmetrical arranged.
7. equal-percent butterfly valve according to claim 5 is characterized in that, the radius of arc R1 of described flow blocking piece inside is greater than or equal to the radius R 2 of butterfly plate.
8. equal-percent butterfly valve according to claim 5 is characterized in that, described pod apertures external frame is channelizing line (13), and channelizing line is benchmark with the medial axis, and a side is a semi-circle, and a side is multi-line section or curved section.
9. equal-percent butterfly valve according to claim 7 is characterized in that, described channelizing line is laterally zygomorphic curved section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010283140 CN101929553B (en) | 2010-09-16 | 2010-09-16 | Equal-percent butterfly valve and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010283140 CN101929553B (en) | 2010-09-16 | 2010-09-16 | Equal-percent butterfly valve and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101929553A true CN101929553A (en) | 2010-12-29 |
| CN101929553B CN101929553B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010283140 Active CN101929553B (en) | 2010-09-16 | 2010-09-16 | Equal-percent butterfly valve and control method thereof |
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| Country | Link |
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| CN (1) | CN101929553B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221817A (en) * | 2015-10-16 | 2016-01-06 | 歌思（天津）低温设备有限公司 | A kind of rock gas pneumatic ball valve switch speed control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826100Y (en) * | 2005-06-02 | 2006-10-11 | 沈新荣 | Dynamic balancing electric regulating butterfly valve |
| CN2849366Y (en) * | 2005-11-03 | 2006-12-20 | 沈新荣 | Adjustable electric ball valve with fluid distributing plate |
| US20070063163A1 (en) * | 2005-09-19 | 2007-03-22 | Yeary Arthur R | Butterfly valve assembly with improved flow characteristics |
| CN201083271Y (en) * | 2007-09-29 | 2008-07-09 | 董映红 | Flow combing butterfly valve |
| CN201802883U (en) * | 2010-09-16 | 2011-04-20 | 杭州哲达科技股份有限公司 | Equal-percentage butterfly valve |
-
2010
- 2010-09-16 CN CN 201010283140 patent/CN101929553B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826100Y (en) * | 2005-06-02 | 2006-10-11 | 沈新荣 | Dynamic balancing electric regulating butterfly valve |
| US20070063163A1 (en) * | 2005-09-19 | 2007-03-22 | Yeary Arthur R | Butterfly valve assembly with improved flow characteristics |
| CN2849366Y (en) * | 2005-11-03 | 2006-12-20 | 沈新荣 | Adjustable electric ball valve with fluid distributing plate |
| CN201083271Y (en) * | 2007-09-29 | 2008-07-09 | 董映红 | Flow combing butterfly valve |
| CN201802883U (en) * | 2010-09-16 | 2011-04-20 | 杭州哲达科技股份有限公司 | Equal-percentage butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221817A (en) * | 2015-10-16 | 2016-01-06 | 歌思（天津）低温设备有限公司 | A kind of rock gas pneumatic ball valve switch speed control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101929553B (en) | 2012-11-21 |
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