CN215214776U - Butterfly valve with good sealing performance - Google Patents
Butterfly valve with good sealing performance Download PDFInfo
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- CN215214776U CN215214776U CN202121159095.3U CN202121159095U CN215214776U CN 215214776 U CN215214776 U CN 215214776U CN 202121159095 U CN202121159095 U CN 202121159095U CN 215214776 U CN215214776 U CN 215214776U
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Abstract
The utility model relates to a butterfly valve with good sealing performance, which comprises a valve body, a supporting frame, a driving gear, a handle, a first valve plate, a second valve plate, a first valve shaft and a second valve shaft; the support frame is arranged on the valve body, the handle is rotatably assembled on the support frame, and the driving gear is sleeved and fixed on the lower end part of the handle; the first valve shaft and the second valve shaft are respectively assembled in the valve body in a rotating mode, the lower ends of the first valve shaft and the second valve shaft are inserted into the valve body, and the upper ends of the first valve shaft and the second valve shaft protrude out of the valve body; a first driven gear is fixed to the upper end of the first valve shaft, and a second driven gear is fixed to the second valve shaft; the driving gear is positioned between the first driven gear and the second driven gear and is respectively meshed with the first driven gear and the second driven gear; the first valve plate is fixed on the first valve shaft; the second valve plate is fixed on the second valve shaft and used for rotationally plugging the valve body; the two-stage valve plate is adopted to plug the inner channel of the valve body, so that the plugging effect on the channel of the valve body is provided, and the sealing performance of the butterfly valve is improved.
Description
Technical Field
The utility model belongs to the technical field of the valve, concretely relates to butterfly valve that leakproofness is good has.
Background
The butterfly valve is also called a flap valve and is a common regulating valve; the method is widely applied to on-off control of the low-pressure pipeline. The device is mainly used for controlling the on-off of the conveying pipelines of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and plays a role in cutting off and throttling the conveying pipelines. Butterfly valves generally include a valve body, a valve shaft rotatably coupled to the valve body, and a valve plate fixed to the valve shaft, wherein the valve plate blocks or opens a passage in the valve body by rotation of the valve shaft.
The patent of the utility model discloses a chinese utility model with the publication number CN210770514U "a butt-clamp type hard seal butterfly valve with good sealing performance", this butterfly valve includes turbine case, valve body, butterfly plate and corrosion-resistant liner, the top of valve body is provided with the end plate, and the top of end plate installs the turbine case, and evenly is provided with the reinforcing screw on the turbine case, the butterfly plate is installed to the inside of valve body, and the lateral wall of valve body is provided with the polysulfone rigid layer, and the inside of valve body lateral wall is provided with the vacuum insulation layer, and the inside of the valve body lateral wall of the vacuum insulation layer inside is provided with the back up coat, the both sides of the inside of valve body have welded metal seal ring; when the butterfly valve is used, the valve body is sealed mainly through water absorption and expansion of the sealing ring, and the V-shaped grooves are formed in the upper end and the lower end of the valve plate respectively, so that the sealing performance of the butterfly valve is reduced.
SUMMERY OF THE UTILITY MODEL
In order to improve the sealing performance of the butterfly valve, the utility model provides a butterfly valve with good sealing performance; in order to achieve the above object, the utility model discloses a technical scheme specifically as follows:
a butterfly valve with good sealing performance comprises a valve body, a supporting frame, a driving gear, a handle, a first valve plate, a second valve plate, a first valve shaft and a second valve shaft; the support frame is arranged on the valve body, the handle is rotatably assembled on the support frame, and the driving gear is sleeved and fixed on the lower end part of the handle; the first valve shaft and the second valve shaft are respectively assembled in the valve body in a rotating mode and are arranged at intervals along the axial direction of the valve body, the lower ends of the first valve shaft and the second valve shaft are inserted into the valve body, and the upper ends of the first valve shaft and the second valve shaft protrude out of the valve body; a first driven gear is fixed to an upper end of the first valve shaft, and a second driven gear is fixed to the second valve shaft; the driving gear is positioned between the first driven gear and the second driven gear and is respectively meshed with the first driven gear and the second driven gear; the first valve plate is fixed on the first valve shaft and used for rotationally blocking the valve body; and the second valve plate is fixed on the second valve shaft and used for rotationally blocking the valve body.
The utility model discloses a beneficial effect with butterfly valve that the leakproofness is good: the handle enables the driving gear to rotate, and the driving gear drives the first valve shaft and the second valve shaft to rotate through the first driven gear and the second driven gear respectively, so that the first valve plate and the second valve plate can simultaneously break or block a channel in the valve body; the two-stage valve plate is adopted to plug the inner channel of the valve body, so that the plugging effect on the channel of the valve body is provided, and the sealing performance of the butterfly valve is improved.
Further, sealing rings are respectively sleeved on the first valve plate and the second valve plate; the seal ring is located on the circumferential side face of the first valve plate or the second valve plate.
Has the advantages that: the sealing washer is used for filling first valve plate and second valve plate respectively and the clearance between the valve body, when being favorable to providing the shutoff, the leakproofness between valve plate and the valve body to improve the leakproofness of butterfly valve.
Furthermore, a first arc-shaped baffle table and a second arc-shaped baffle table are arranged in the valve body, the first arc-shaped baffle table and the second arc-shaped baffle table are respectively positioned at two sides of the first valve plate or the second valve plate, and the first arc-shaped baffle table and the second arc-shaped baffle table are symmetrically arranged relative to the first valve shaft or the second valve shaft; and the first valve plate or the second valve plate is limited in one-way blocking.
Has the advantages that: when the valve plate is blocked, the side face of one side of the valve plate is tightly abutted against the first arc-shaped blocking platform and the second arc-shaped blocking platform, and the first arc-shaped blocking platform and the second arc-shaped blocking platform form blocking limit on the first valve plate or the second valve plate and provide sealing performance between the valve plate and the valve body.
Furthermore, sealing gaskets are respectively fixed on the side surfaces of the first arc-shaped blocking platform and the second arc-shaped blocking platform, which are close to the first valve plate or the second valve plate.
Has the advantages that: during plugging, the sealing gasket is filled in a gap between the valve plate and the arc-shaped blocking platform, so that the sealing performance between the valve plate and the arc-shaped blocking platform is improved, and the sealing performance of the butterfly valve is improved.
Further, the butterfly valve that has the leakproofness well still includes the housing, the housing sets up on the surface of valve body for accomodate drive gear, first driven gear, second driven gear and support frame in the casing.
Has the advantages that: when the housing carries out effective protection to drive gear, first driven gear and second driven gear, it is filled with lubricating oil to be favorable to drive gear, first driven gear and second driven gear's lubrication in the housing intussuseption.
Further, the first valve shaft and the second valve shaft are respectively connected with the valve body through a bearing in a rotating assembly mode, and a sealing ring is arranged below the bearing.
Has the advantages that: the bearing is adopted to realize the rotating assembly, and the device has the characteristics of simple structure and small resistance; the sealing ring provides sealing at the joint and prevents liquid or gas in the valve body from escaping from the joint.
Furthermore, a first flange and a second flange are respectively arranged at two ends of the valve body, and bolt through holes are respectively formed in the first flange and the second flange.
Has the advantages that: the first flange and the second flange are arranged at the two ends of the valve body respectively, so that the butterfly valve is convenient to connect with a pipeline.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the butterfly valve with good sealing performance of the present invention;
fig. 2 is a schematic partial perspective view of an embodiment of the butterfly valve with good sealing performance according to the present invention;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
fig. 5 is an enlarged view at B in fig. 4.
Reference numbers in the figures: 1-a valve body, 2-a support frame, 3-a driving gear, 4-a handle, 5-a first valve plate, 6-a second valve plate, 7-a first valve shaft, 8-a second valve shaft, 9-a first driven gear, 10-a second driven gear, 11-a sealing ring, 12-a first arc-shaped baffle table, 13-a second arc-shaped baffle table, 14-a sealing gasket, 15-a housing, 16-a first flange and 17-a second flange.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
the utility model discloses the embodiment concrete structure of butterfly valve that has the leakproofness good is shown in fig. 1-5, including valve body 1, support frame 2, drive gear 3, handle 4, first valve plate 5, second valve plate 6, first valve shaft 7 and second valve shaft 8. The support frame 2 is arranged on the valve body 1, the handle 4 is rotatably assembled on the support frame 2, and the driving gear 3 is sleeved and fixed on the lower end part of the handle 4; the handle 4 is rotatably assembled on the support frame 2 through a bearing. The first valve shaft 7 and the second valve shaft 8 are respectively rotatably assembled in the valve body 1 through bearings and are arranged at intervals along the axial direction of the valve body 1; the spacing between the first valve shaft 7 and the second valve shaft 8 is greater than the diameter of the first valve plate 5 or the second valve plate 6. The lower ends of the first valve shaft 7 and the second valve shaft 8 are inserted into the valve body 1, and the upper ends of the first valve shaft and the second valve shaft protrude out of the valve body 1; a first driven gear 9 is fixed to an upper end of the first valve shaft 7, and a second driven gear 10 is fixed to the second valve shaft 8; the driving gear 3 is positioned between the first driven gear 9 and the second driven gear 10, and the driving gear 3 is meshed with the first driven gear 9 and the second driven gear 10 respectively; the first valve plate 5 is fixed on the first valve shaft 7 and used for rotatably plugging the valve body 1; the second valve plate 6 is fixed on the second valve shaft 8 and is used for rotatably blocking the valve body 1.
In the present embodiment, the first valve plate 5 and the second valve plate 6 are respectively sleeved with a seal ring 11; the sealing ring 11 is positioned on the circumferential side surface of the first valve plate 5 or the second valve plate 6; the sealing ring 11 is used for filling the gaps between the first valve plate 5 and the second valve plate 6 and the valve body 1 respectively, and is beneficial to providing sealing performance between the valve plates and the valve body 1 when plugging is carried out, so that the sealing performance of the butterfly valve is improved. In other embodiments, the first valve plate and the second valve plate are not sleeved with sealing rings.
In the present embodiment, a first arc-shaped stop 12 and a second arc-shaped stop 13 are provided in the valve body 1, the first arc-shaped stop 12 and the second arc-shaped stop 13 are respectively located at two sides of the first valve plate 5 or the second valve plate 6, and the first arc-shaped stop 12 and the second arc-shaped stop 13 are symmetrically arranged with respect to the first valve shaft 7 or the second valve shaft 8; the first valve plate 5 or the second valve plate 6 is limited in one-way blocking; when the valve plate is blocked, the side face of one side of the valve plate is tightly abutted to the first arc-shaped blocking platform 12 and the second arc-shaped blocking platform 13, and the first arc-shaped blocking platform 12 and the second arc-shaped blocking platform 13 form blocking limit for the first valve plate 5 or the second valve plate 6 and provide sealing performance between the valve plate and the valve body 1. Sealing gaskets 14 are respectively fixed on the side surfaces of the first arc-shaped baffle table 12 and the second arc-shaped baffle table 13 close to the first valve plate 5 or the second valve plate 6; during plugging, the sealing gasket 14 is filled in a gap between the valve plate and the arc-shaped blocking platform, so that the sealing performance between the valve plate and the arc-shaped blocking platform is improved, and the sealing performance of the butterfly valve is improved. In other embodiments, no sealing gasket is disposed on the sides of the first and second arcuate stops.
In this embodiment, the butterfly valve with good sealing performance further comprises a cover 15, wherein the cover 15 is arranged on the outer surface of the valve body 1 and is used for accommodating the driving gear 3, the first driven gear 9, the second driven gear 10 and the support frame 2 in the shell; while the housing 15 effectively protects the driving gear 3, the first driven gear 9 and the second driven gear 10, the housing 15 is filled with lubricating oil, which is beneficial to lubricating the driving gear 3, the first driven gear 9 and the second driven gear 10. The first valve shaft 7 and the second valve shaft 8 are respectively connected with the valve body 1 through a bearing in a rotating assembly manner, and a sealing ring is arranged below the bearing; the bearing is adopted to realize the rotating assembly, and the device has the characteristics of simple structure and small resistance; the sealing ring provides sealing at the joint and prevents liquid or gas in the valve body 1 from escaping from the joint. A first flange 16 and a second flange 17 are respectively arranged at two ends of the valve body 1, and bolt through holes are respectively formed in the first flange 16 and the second flange 17; the connection between the butterfly valve and the pipeline is facilitated by the arrangement of the first flange 16 and the second flange 17 at the two ends of the valve body 1 respectively. In other embodiments, the two ends of the valve body are respectively connected with the pipeline through welding, so as to replace the first flange and the second flange.
When the valve body 1 is used, the handle 4 enables the driving gear 3 to rotate, and the driving gear 3 drives the first valve shaft 7 and the second valve shaft 8 to rotate through the first driven gear 9 and the second driven gear 10 respectively, so that the first valve plate 5 and the second valve plate 6 can simultaneously break or block a channel in the valve body 1; the two-stage valve plate is adopted to plug the channel in the valve body 1, so that the plugging effect on the channel in the valve body 1 is provided, and the sealing performance of the butterfly valve is improved.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. A butterfly valve with good sealing performance is characterized by comprising a valve body, a supporting frame, a driving gear, a handle, a first valve plate, a second valve plate, a first valve shaft and a second valve shaft; the support frame is arranged on the valve body, the handle is rotatably assembled on the support frame, and the driving gear is sleeved and fixed on the lower end part of the handle; the first valve shaft and the second valve shaft are respectively assembled in the valve body in a rotating mode and are arranged at intervals along the axial direction of the valve body, the lower ends of the first valve shaft and the second valve shaft are inserted into the valve body, and the upper ends of the first valve shaft and the second valve shaft protrude out of the valve body; a first driven gear is fixed to an upper end of the first valve shaft, and a second driven gear is fixed to the second valve shaft; the driving gear is positioned between the first driven gear and the second driven gear and is respectively meshed with the first driven gear and the second driven gear; the first valve plate is fixed on the first valve shaft and used for rotationally blocking the valve body; and the second valve plate is fixed on the second valve shaft and used for rotationally blocking the valve body.
2. The butterfly valve with good sealing performance according to claim 1, wherein a sealing ring is sleeved on each of the first valve plate and the second valve plate; the seal ring is located on the circumferential side face of the first valve plate or the second valve plate.
3. The butterfly valve with good sealing performance according to claim 1, wherein a first arc-shaped retaining platform and a second arc-shaped retaining platform are arranged in the valve body, the first arc-shaped retaining platform and the second arc-shaped retaining platform are respectively positioned at two sides of the first valve plate or the second valve plate, and the first arc-shaped retaining platform and the second arc-shaped retaining platform are symmetrically arranged about the first valve shaft or the second valve shaft; and the first valve plate or the second valve plate is limited in one-way blocking.
4. The butterfly valve with good sealing performance as claimed in claim 3, wherein sealing gaskets are respectively fixed on the side surfaces of the first arc-shaped retaining platform and the second arc-shaped retaining platform, which are close to the first valve plate or the second valve plate.
5. The butterfly valve with good sealing performance of claim 1, further comprising a housing disposed on an outer surface of the valve body for receiving the driving gear, the first driven gear, the second driven gear and the support frame in the housing.
6. The butterfly valve with good sealing performance according to claim 1, wherein the rotating assembly connection between the first valve shaft and the second valve shaft and the valve body is a bearing connection, and a sealing ring is arranged below the bearing.
7. The butterfly valve with good sealing performance according to claim 1, wherein a first flange and a second flange are respectively arranged at two ends of the valve body, and bolt through holes are respectively formed in the first flange and the second flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121159095.3U CN215214776U (en) | 2021-05-27 | 2021-05-27 | Butterfly valve with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121159095.3U CN215214776U (en) | 2021-05-27 | 2021-05-27 | Butterfly valve with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215214776U true CN215214776U (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121159095.3U Active CN215214776U (en) | 2021-05-27 | 2021-05-27 | Butterfly valve with good sealing performance |
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| CN (1) | CN215214776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116480794A (en) * | 2023-06-20 | 2023-07-25 | 江苏兰格特自动化设备有限公司 | Double-sealing device of horizontal pressure pipeline |
-
2021
- 2021-05-27 CN CN202121159095.3U patent/CN215214776U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116480794A (en) * | 2023-06-20 | 2023-07-25 | 江苏兰格特自动化设备有限公司 | Double-sealing device of horizontal pressure pipeline |
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