CN219623266U - Butterfly valve with short stroke, small opening and closing torque and small leakage - Google Patents
Butterfly valve with short stroke, small opening and closing torque and small leakage Download PDFInfo
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- CN219623266U CN219623266U CN202320592783.1U CN202320592783U CN219623266U CN 219623266 U CN219623266 U CN 219623266U CN 202320592783 U CN202320592783 U CN 202320592783U CN 219623266 U CN219623266 U CN 219623266U
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Abstract
The utility model provides a butterfly valve with short stroke, small opening and closing torque and small leakage, which belongs to the field of butterfly valves and comprises a valve body and a valve plate, wherein a rubber lining is arranged in an inner cavity of the valve body, the valve plate is obliquely arranged in the valve body around a valve shaft, the opening and closing stroke of the valve plate is smaller than 90 degrees, a side end face of the valve plate is attached to the rubber lining, the valve shaft is positioned at the center of the valve body, the center line of the valve plate is arranged in a collinear way with the axis of the valve shaft, the side end face of the valve plate is obliquely inclined along the circumferential direction to form an inclined plane, the inclined angle of the inclined plane is 4-5 degrees, the valve plate is flat plate type, the upper end face and the lower end face of the valve plate are horizontally arranged, and the front end face and the rear end face of the valve plate are horizontally arranged and are perpendicular to the upper end face and the lower end face of the valve plate. The utility model has the advantages of convenient assembly and disassembly, reduced friction force, small torque and shortened opening and closing stroke while ensuring tightness.
Description
Technical Field
The utility model belongs to the field of butterfly valves, and particularly relates to a butterfly valve with short stroke, small opening and closing torque and small leakage.
Background
In the prior art, the opening and closing stroke of the butterfly valve is mostly 90 degrees, namely, the valve plate vertically rotates along the valve shaft to realize opening, the opening and closing stroke is long, and the torque formed by the friction force between the valve plate and the valve body is large.
In order to solve the above problems, in the specification of the butterfly check valve with the metal hard seal inclined valve plate of application number CN200820069207.4, it is disclosed that by arranging the valve plate obliquely, the included angle between the central line of the valve plate and the axis of the inner cavity of the valve body is 20 °, the valve rod is arranged at one side of the valve plate, while the opening and closing stroke is reduced, the structure is special, other valve bodies cannot be applied, the disassembly is inconvenient, the contact area between the valve plate and the valve body is small, if the valve plate is dislocated, the tightness cannot be ensured, and the minimum leakage requirement of the fully-closed valve cannot be met.
In order to reduce the torque, the valve is sealed and the opening and closing stroke is shortened, so the utility model is provided.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a butterfly valve with short stroke, small opening and closing torque and small leakage amount, which can be convenient to assemble and disassemble, reduce friction force while ensuring tightness, form small torque and shorten opening and closing stroke.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a butterfly valve of little moment of torsion little leakage volume is opened and close to short stroke, includes valve body and valve plate the inner chamber of valve body is provided with the rubber inside lining, the valve plate is in around the valve shaft slope setting in the valve body for make the stroke of opening and close of valve plate is less than 90, the side terminal surface of valve plate with the rubber inside lining pastes mutually, the valve shaft is located the center of valve body, the central line of valve plate with the axle center collineation setting of valve shaft.
Further, the side end face of the valve plate is inclined at the same angle along the circumferential direction to form an inclined plane, and the inclined angle of the inclined plane is 4-5 degrees.
Further, the valve plate is flat plate type, the upper end face and the lower end face of the valve plate are horizontally arranged, and the front end face and the rear end face of the valve plate are horizontally arranged and perpendicular to the upper end face and the lower end face of the valve plate.
Further, the valve plate is detachably connected to the valve shaft.
Further, the valve shaft comprises an upper valve shaft and a lower valve shaft, the upper valve shaft is rotatably connected to the upper end of the valve body through an upper shaft sleeve, and the lower valve shaft is rotatably connected to the lower end of the valve body through a lower shaft sleeve.
Further, the upper end of the valve plate is inserted with the lower end of the upper valve shaft, the lower end of the valve body is inserted with the upper end of the lower valve shaft, and the valve plate is connected with the upper valve shaft and the lower valve shaft through screws.
Further, a sealing sleeve is arranged at the upper end of the valve body, the upper valve shaft is matched in the sealing sleeve, and a shaft shoulder screw plug is arranged at the lower end of the valve body.
Further, a sealing ring is arranged at the joint of the upper valve shaft and the sealing sleeve, and a sealing gasket is arranged at the joint of the shoulder screw plug and the lower end of the valve body.
Further, the opening and closing travel of the valve plate is 85-86 degrees.
Further, the rubber liner is subjected to high temperature vulcanization.
The utility model has the advantages and positive effects that:
by adopting the technical scheme, the valve plate is inclined by 4-5 degrees, the opening and closing stroke is shortened, the circumference of the valve plate is attached to the rubber lining in the inner cavity of the valve body, the side end face of the valve plate is inclined by 4-5 degrees along the circumference, the inclined plane increases the contact area with the rubber lining on one hand, the sealing is enhanced, and on the other hand, the medium is convenient to drive the valve plate to rotate.
The valve plate is connected with the upper valve shaft and the lower valve shaft in an inserting mode, the valve plate is fixed through screws, so that the valve plate is convenient to detach and replace, and the axle center of the valve shaft and the central line of the valve plate are arranged in a collinear manner, so that the valve plate rotates around the valve shaft, and the valve is suitable for other valve bodies. Sealing sleeves and shoulder screw plugs arranged at the upper end and the lower end of the valve body strengthen the internal sealing of the valve body, and prevent the medium from leaking from the valve body.
Drawings
FIG. 1 is a schematic illustration of the present utility model;
FIG. 2 is a schematic diagram of the internal structure of the present utility model;
FIG. 3 is a front view of a valve plate of the present utility model;
FIG. 4 is a top view of a valve plate of the present utility model;
fig. 5 is a schematic view of the rotation angle of the present utility model.
In the figure:
1. a valve body; 11. a rubber liner; 2. sealing sleeve; 3. an upper valve shaft; 31. a seal ring; 4. an upper shaft sleeve; 41. a lower shaft sleeve; 5. a valve plate; 51. a connection hole; 6. a lower valve shaft; 7. shoulder screw plug; 71. and a sealing gasket.
Detailed Description
The utility model is further described below with reference to examples and figures.
As shown in fig. 1 to 5, the embodiment provides a butterfly valve with short stroke, small torque and small leakage, which comprises a valve body 1 and a valve plate 5 obliquely arranged in the valve body 1 along a valve shaft, wherein the valve shaft is positioned at the center of the valve body 1, the center line of the valve plate 5 is arranged in a line with the axis of the valve shaft, a rubber liner 11 vulcanized at high temperature is arranged in the inner cavity of the valve body 1, the valve plate 5 is inserted in the valve shaft, the valve shaft comprises an upper valve shaft 3 and a lower valve shaft 6, an upper shaft sleeve 4 is arranged in the upper end of the valve body 1, the upper valve shaft 3 is rotatably connected to the upper end of the valve body 1 through the upper shaft sleeve 4, a sealing sleeve 2 is arranged at the top end of the valve body 1 and used for sealing the upper end of the valve body 1, and a sealing ring 31 is arranged at the position, which is attached to the sealing sleeve 2, of the upper valve shaft 3 for strengthening sealing.
A lower shaft sleeve 41 is arranged in the lower end of the valve body 1, the lower valve shaft 6 is rotatably connected to the lower end of the valve body 1 through the lower shaft sleeve 41, a shoulder screw plug 7 is connected to the lower end of the valve body 1 in a threaded manner and used for limiting the position of the lower valve shaft 6, and a sealing gasket 71 is arranged at the joint of the shoulder screw plug 7 and the valve body 1 for enhancing sealing.
The upper end of the valve plate 5 is inserted at the lower end of the upper valve shaft 3, the lower end of the valve plate 5 is inserted at the upper end of the lower valve shaft 6, the upper valve shaft 3, the lower valve shaft 6 and the valve plate 5 are all connected through screws, specifically, connecting holes 51 are formed at the upper end and the lower end of the valve plate 5, through holes corresponding to the connecting holes 51 are formed in the upper valve shaft 3 and the lower valve shaft 6, and the through holes are connected with the connecting holes 51 through screws.
As shown in fig. 3, the valve plate 5 is a flat plate, that is, the upper end face and the lower end face of the valve plate 5 are both 180 ° planes, the front end face and the rear end face of the valve plate 5 are also 180 ° planes, the upper end face and the lower end face are perpendicular to the front end face and the rear end face, the side end faces of the valve plate 5 are inclined in the same direction along the circumference, the inclined planes of the left end face and the right end face of the valve plate 5 are parallel to each other, the inclined angle is 4 ° to 5 °, when the valve plate 5 is arranged in the valve body 1, in order to seal a pipeline, the two side end faces of the valve plate 5 are attached to the rubber lining 11 in the valve body 1, the included angle between the central line of the valve plate 5 and the central line of the valve body 1 is 4 ° to 5 °, the rotation torque is reduced, and the valve plate 5 can be sealed by 85 ° to 86 °.
The working procedure of this example:
by rotating the upper valve shaft 3, the valve plate 5 is controlled to rotate in the valve body 1;
when the valve body 1 is closed:
the center line of the valve plate 5 forms an included angle of 4-5 degrees with the center line of the valve body 1, and two side surfaces of the valve plate 5 are attached to the rubber lining 11 to realize the sealing of the valve body 1;
when the valve body 1 is opened:
the rotation range of the valve plate 5 is 85-86 degrees until the valve plate is vertical to the valve body 1, the valve body 1 is opened, and the included angle between the central line of the valve plate 5 in the closed state and the central line of the valve plate 5 in the opened state is 85-86 degrees when the valve plate is in the opened state.
The beneficial effects of the utility model are as follows:
the valve plate 5 is connected with the upper valve shaft 3 and the lower valve shaft 6 in a plugging manner, so that the valve plate 5 is convenient to detach and replace, and the leakage amount of the valve plate 5 is reduced in a minimum leakage amount range in a closed state of the valve plate 5.
The upper end of the valve body 1 is sealed through the sealing sleeve 2, the lower end of the valve body 1 is plugged through the shaft shoulder screw plug 7, the mounting position of the lower valve shaft 6 is limited by the shaft shoulder screw plug 7, the sealing ring 31 and the sealing gasket 71 are arranged, the sealing strength of the upper end and the lower end of the valve body 1 is enhanced, and the leakage of the valve due to the water leakage of the shaft hole of the valve body 1 is prevented.
When the valve plate 5 is obliquely arranged in the valve body 1, the inclined angle range of the inclined plane is 4-5 degrees, so that the inclined plane of the side end surface of the valve plate 5 and the rubber lining 11 in the valve body 1 form a sealing surface with an included angle smaller than 90 degrees, the opening and closing stroke is short, the opening and closing stroke is shortened from 90 degrees to 85-86 degrees, and the operating torque is smaller than that of a common butterfly valve.
The foregoing detailed description of one or more embodiments of the utility model has been presented for purposes of illustration and description, but is not intended to limit the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (10)
1. The utility model provides a butterfly valve of little moment of torsion little leakage volume is opened and close to short stroke, includes valve body (1) and valve plate (5), its characterized in that: the inner cavity of the valve body (1) is provided with a rubber lining (11), the valve plate (5) is obliquely arranged in the valve body (1) around a valve shaft, the valve plate is used for enabling the opening and closing travel of the valve plate (5) to be smaller than 90 degrees, the side end face of the valve plate (5) is attached to the rubber lining (11), the valve shaft is located at the center of the valve body (1), and the center line of the valve plate (5) is arranged in a line with the axis of the valve shaft.
2. The butterfly valve of claim 1, wherein the butterfly valve is characterized by: the side end face of the valve plate (5) is inclined in the same direction along the circumferential direction to form an inclined plane, and the inclined angle of the inclined plane is 4-5 degrees.
3. The butterfly valve of claim 2, wherein the butterfly valve is characterized by: the valve plate (5) is flat plate-type, the upper end face and the lower end face of the valve plate (5) are horizontally arranged, and the front end face and the rear end face of the valve plate (5) are horizontally arranged and perpendicular to the upper end face and the lower end face of the valve plate (5).
4. The butterfly valve of claim 1, wherein the butterfly valve is characterized by: the valve plate (5) is detachably connected to the valve shaft.
5. The butterfly valve of claim 4, wherein the butterfly valve is characterized by: the valve shaft comprises an upper valve shaft (3) and a lower valve shaft (6), the upper valve shaft (3) is rotatably connected to the upper end of the valve body (1) through an upper shaft sleeve (4), and the lower valve shaft (6) is rotatably connected to the lower end of the valve body (1) through a lower shaft sleeve (41).
6. The butterfly valve of claim 5, wherein the butterfly valve is characterized by: the upper end of the valve plate (5) is inserted with the lower end of the upper valve shaft (3), the lower end of the valve plate (5) is inserted with the upper end of the lower valve shaft (6), and the valve plate (5) is connected with the upper valve shaft (3) and the lower valve shaft (6) through screws.
7. The butterfly valve of claim 5, wherein the butterfly valve is characterized by: the upper end of the valve body (1) is provided with a sealing sleeve (2), the upper valve shaft (3) is matched in the sealing sleeve (2), and the lower end of the valve body (1) is provided with a shaft shoulder screw plug (7).
8. The butterfly valve of claim 7, wherein the butterfly valve is characterized by a low torque and a low leakage with a short stroke: a sealing ring (31) is arranged at the joint of the upper valve shaft (3) and the sealing sleeve (2), and a sealing gasket (71) is arranged at the joint of the shoulder screw plug (7) and the lower end of the valve body (1).
9. The butterfly valve of claim 2, wherein the butterfly valve is characterized by: the opening and closing travel of the valve plate (5) is 85-86 degrees.
10. The butterfly valve of claim 1, wherein the butterfly valve is characterized by: the rubber lining (11) is subjected to high-temperature vulcanization treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320592783.1U CN219623266U (en) | 2023-03-23 | 2023-03-23 | Butterfly valve with short stroke, small opening and closing torque and small leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320592783.1U CN219623266U (en) | 2023-03-23 | 2023-03-23 | Butterfly valve with short stroke, small opening and closing torque and small leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219623266U true CN219623266U (en) | 2023-09-01 |
Family
ID=87792455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320592783.1U Active CN219623266U (en) | 2023-03-23 | 2023-03-23 | Butterfly valve with short stroke, small opening and closing torque and small leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219623266U (en) |
-
2023
- 2023-03-23 CN CN202320592783.1U patent/CN219623266U/en active Active
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