CN201802883U - Equal-percentage butterfly valve - Google Patents
Equal-percentage butterfly valve Download PDFInfo
- Publication number
- CN201802883U CN201802883U CN 201020531101 CN201020531101U CN201802883U CN 201802883 U CN201802883 U CN 201802883U CN 201020531101 CN201020531101 CN 201020531101 CN 201020531101 U CN201020531101 U CN 201020531101U CN 201802883 U CN201802883 U CN 201802883U
- Authority
- CN
- China
- Prior art keywords
- equal
- plate
- percent
- butterfly valve
- butterfly
- 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 - Lifetime
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a butterfly valve, especially to an equal-percentage butterfly valve. In order to solve the problem that percentage control accuracy is low in the prior art, The utility model provides an equal-percentage butterfly valve, of which the percentage control accuracy is similar to that of a small-caliber equal-percentage ball valve. The main solution to the utility model is that the equal-percentage butterfly valve comprises a valve body, a shaft rod and a dish plate, wherein an upper valve shaft 7 and a lower valve shaft are arranged on and under the dish plate, and the shaft rod connects to the upper valve shaft. The equal-percentage butterfly is characterized in that a front baffle plate and a rear baffle plate are fixedly arranged in a pipe in front of and behind the dish plate. In such a structure that baffle plates includes a front baffle plate and a rear baffle plate and are installed in a front-back correspondence manner on a valve body instead of on a dish plate, the equal-percentage effect can be realized.
Description
Technical field
The utility model relates to a kind of butterfly valve, relates in particular to a kind of equal-percent butterfly valve.
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 utility model 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 utility model 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.
In sum, the utility model is compared with prior art and is had following advantage:
The utility model 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 utility model 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 utility model.
Fig. 2 is side view cross section figure of the present utility model.
Fig. 3 is the front view of preceding flow-stopping plate of the present utility model.
Fig. 4 is the side view of preceding flow-stopping plate of the present utility model.
Fig. 5 is the front view of flow-stopping plate before the another kind of the present utility model.
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, the technical solution of the utility model is described in further detail.
As shown in Figure 1 and Figure 2, the utility model equal-percent butterfly valve 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 utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model 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 201020531101 CN201802883U (en) | 2010-09-16 | 2010-09-16 | Equal-percentage butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020531101 CN201802883U (en) | 2010-09-16 | 2010-09-16 | Equal-percentage butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802883U true CN201802883U (en) | 2011-04-20 |
Family
ID=43872382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020531101 Expired - Lifetime CN201802883U (en) | 2010-09-16 | 2010-09-16 | Equal-percentage butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929553A (en) * | 2010-09-16 | 2010-12-29 | 杭州哲达科技股份有限公司 | Equal-percent butterfly valve and control method thereof |
-
2010
- 2010-09-16 CN CN 201020531101 patent/CN201802883U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929553A (en) * | 2010-09-16 | 2010-12-29 | 杭州哲达科技股份有限公司 | Equal-percent butterfly valve and control method thereof |
| CN101929553B (en) * | 2010-09-16 | 2012-11-21 | 杭州哲达科技股份有限公司 | Equal-percent butterfly valve and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201802883U (en) | Equal-percentage butterfly valve | |
| CN102367857A (en) | Adjustable force type hydraulic damper | |
| CN102466074A (en) | Induction water faucet capable of regulating waterflow automatically | |
| CN101929553B (en) | Equal-percent butterfly valve and control method thereof | |
| CN201994611U (en) | Pre-buried distribution box with adjustable depth | |
| CN205007336U (en) | Liver and gall drainage ware | |
| CN207971903U (en) | A kind of valve positioner for regulating valve more changing device online | |
| CN201688007U (en) | Adjustable vacuum limiting valve | |
| CN202561066U (en) | Adjusting butterfly valve | |
| CN102221103A (en) | Regulating valve with double valve seats | |
| CN211624342U (en) | High-pressure pneumatic ventilation butterfly valve | |
| CN202188140U (en) | Streamline box door plate eccentric sealing butterfly valve | |
| CN202251618U (en) | Hydraulic damper with adjustable force value | |
| CN202132510U (en) | Diaphragm type mud discharge valve | |
| CN203442210U (en) | Valve element guiding structure of tee joint electric control valve | |
| CN101846190A (en) | Adjustable vacuum flow-limiting valve | |
| CN205190759U (en) | A valve | |
| CN220453067U (en) | Safety device of waterproof hammer | |
| CN204042050U (en) | A kind of fixing ball valve | |
| CN105650317A (en) | Film reducing valve | |
| CN204784795U (en) | Pottery double -gate plate valve | |
| CN206637051U (en) | A kind of Wedge type double gate board gate valve | |
| CN218625462U (en) | Regulating valve | |
| CN217784262U (en) | Plug valve capable of adjusting flow | |
| CN204664567U (en) | A kind of adjust flux quick closing valve ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Equal-percent butterfly valve and control method thereof Effective date of registration: 20120702 Granted publication date: 20110420 Pledgee: Bank of Hangzhou Limited by Share Ltd science and Technology Branch Pledgor: Hangzhou Zheda Technology Co., Ltd. Registration number: 2012990000343 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210618 Granted publication date: 20110420 Pledgee: Bank of Hangzhou Limited by Share Ltd. science and Technology Branch Pledgor: HANGZHOU ZETA TECHNOLOGY Co.,Ltd. Registration number: 2012990000343 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |