CN217713680U - But two-way compound seal structure of automatically regulated type of butterfly valve - Google Patents
But two-way compound seal structure of automatically regulated type of butterfly valve Download PDFInfo
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- CN217713680U CN217713680U CN202221900626.4U CN202221900626U CN217713680U CN 217713680 U CN217713680 U CN 217713680U CN 202221900626 U CN202221900626 U CN 202221900626U CN 217713680 U CN217713680 U CN 217713680U
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- butterfly
- butterfly plate
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Abstract
The utility model discloses an automatically adjustable two-way composite sealing structure of butterfly valve, which belongs to the butterfly valve sealing field, and comprises an end cover and a valve body, wherein the end cover is fixedly arranged at the bottom end of the valve body, the bottom of the inner cavity of the valve body is provided with a short valve shaft, the top of the inner cavity of the valve body is provided with a valve shaft, one side of the valve body is provided with a limiting mechanism, a butterfly plate pin is arranged inside the valve body, one end of the short valve shaft is fixedly connected with a butterfly plate through the butterfly plate pin, a sealing ring is sleeved outside the butterfly plate in a movable manner, and a valve body sealing seat is arranged inside the valve body; the main sealing structure of the butterfly valve is set into an adjustable reliable bidirectional sealing form through structural design; the automatic adjustment type bidirectional composite sealing structure of the butterfly valve is characterized in that an original sealing structure is set into two seals (only in reverse sealing) through structural design.
Description
Technical Field
The utility model belongs to the technical field of the butterfly valve is sealed, concretely relates to but two-way composite seal structure of automatically regulated type of butterfly valve.
Background
Butterfly valves are valves that use a butterfly plate to rotate back and forth to open, close, or regulate the flow of a medium. The butterfly valve has the advantages of simple structure, small volume, light weight, less material consumption, small installation size, small driving moment and simple and convenient operation, also has good flow regulation function and closing and sealing characteristics, and is one of the fastest valve varieties developed in recent decades. The butterfly valve drives the valve shaft to rotate through the driving device, and the valve shaft drives the butterfly plate to rotate, so that opening and closing are realized. The valve is widely applied to various pipelines in industries such as power stations, tap water, environmental protection and the like, is mainly used as a cut-off device, and is suitable for media such as water, gas and the like.
However, most of the existing butterfly valves have one-way sealing structures, and during work, sealing can be achieved only under forward pressure, and under the condition that the butterfly valves are under reverse pressure, a medium leakage phenomenon can occur, so that the butterfly valves can be automatically adjusted and have two-way composite sealing structures.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a but two-way compound seal structure of automatically regulated type of butterfly valve to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a but two-way compound seal structure of automatically regulated type of butterfly valve, includes end cover and valve body, end cover fixed mounting is in the bottom of valve body, the bottom of valve body inner chamber is provided with the short valve axle, the top of valve body inner chamber is provided with the valve shaft, one side of valve body is provided with stop gear, the inside of valve body is provided with the butterfly plate round pin, the butterfly plate round pin fixedly connected with butterfly plate is passed through to the one end of short valve axle, the sealing washer has been cup jointed in the outside activity of butterfly plate, the inside of valve body is provided with the valve body seal receptacle, the outside of valve body seal receptacle is provided with O type circle, the inside of valve body is provided with the retaining ring.
In a preferred embodiment, the sealing ring is fixed to the outer portion of the butterfly plate by a clamping ring.
In a preferred embodiment, a thrust ring is arranged between the end cover and the valve body.
Compared with the prior art, the beneficial effects of the utility model are that:
the main sealing structure of the butterfly valve is set into an adjustable reliable bidirectional sealing form through structural design;
the automatic adjusting type bidirectional composite sealing structure of the butterfly valve is characterized in that an original sealing structure is set into two seals (only in reverse sealing) through structural design.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
fig. 2 is an enlarged schematic view of a point a in the structure diagram of the present invention 1.
In the figure: 1. an end cap; 2. a thrust ring; 3. a short valve shaft; 4. a butterfly plate pin; 5. a limiting mechanism; 6. a butterfly plate; 7. a valve body; 8. a valve shaft; 9. a retainer ring; 10. pressing a ring; 11. a seal ring; 12. a valve body seal seat; 13. an O-shaped ring.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be according to concrete condition do further adjustment the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of requiring protection.
Referring to fig. 1 and 2, the present invention provides an automatically adjustable two-way composite sealing structure of a butterfly valve, including an end cover 1 and a valve body 7, in order to improve the sealing effect of the butterfly valve, the end cover 1 can be fixedly installed at the bottom of the valve body 7, the bottom of the inner cavity of the valve body 7 is provided with a short valve shaft 3, the top of the inner cavity of the valve body 7 is provided with a valve shaft 8, one side of the valve body 7 is provided with a spacing mechanism 5, the inside of the valve body 7 is provided with a butterfly plate pin 4, one end of the short valve shaft 3 is fixedly connected with a butterfly plate 6 through the butterfly plate pin 4, the outside of the butterfly plate 6 is movably sleeved with a sealing ring 11, the inside of the valve body 7 is provided with a valve body sealing seat 12, the outside of the valve body sealing seat 12 is provided with an O-shaped ring 13, the inside of the valve body 7 is provided with a retaining ring 9, the sealing ring 11 is fixed outside of the butterfly plate 6 through a pressing ring 10, a thrust ring 2 is arranged between the end cover 1 and the valve body 7, the two-way butterfly valve adopts a movable sealing structure, the movable valve body sealing seat and the valve body installation contact plane are sealed by adopting an O-shaped ring 13 without welding and fixing, the valve body 7 is provided with a valve body sealing seat 12 assembling and positioning step to ensure the relative position of the sealing ring 11 and the valve body sealing seat 12, after the valve body sealing seat 12 is installed, a certain stroke is reserved for welding a retainer ring 9, the valve seat can move in the middle, 507 hard alloy is welded at the oblique angle of the butterfly plate 6, when the reverse sealing is carried out, the movable sealing valve seat is pushed by water pressure, the valve body sealing seat 12 is in oblique angle contact with the butterfly plate 6 to form a second seal, so that the reverse sealing is realized, under the condition of forward pressure of the valve, the valve body sealing seat 12 is at the initial position during design, at the moment, the sealing ring 11 is at precompression to ensure the sealing of the valve, the sealing is tighter after the increase of the water pressure, the high-pressure sealing is realized, under the condition of reverse pressure of the valve, the valve body sealing 12 is under the thrust of water, move backward for sealing washer 11 compressive capacity is bigger, and area of contact is wideer, reaches certain water pressure condition, and the seal receptacle contacts with butterfly plate 6 oblique angle, forms the second and seals, and this sealed form is hard seal, thereby realizes reverse high low pressure seal state.
The utility model discloses a theory of operation and use flow: firstly, a butterfly valve with a bidirectional sealing structure is in a movable sealing valve seat form, welding and fixing are not needed, an O-shaped ring 13 is used for sealing a mounting contact plane of a movable valve body sealing seat and a valve body, a valve body 7 is provided with a valve body sealing seat 12 assembling and positioning step, the relative position of a sealing ring 11 and the valve body sealing seat 12 is ensured, a check ring 9 is welded after the valve body sealing seat 12 is mounted, a certain stroke is reserved, the valve seat can move in the middle, 507 hard alloy is built up at the oblique angle of a butterfly plate 6, when reverse sealing is carried out, the movable sealing valve seat is pushed by water pressure, the valve body sealing seat 12 is in oblique angle contact with the butterfly plate 6 to form second sealing, so that reverse sealing is realized, under the condition that the valve is positively pressed, the valve body sealing seat 12 is at the initial position when being designed, at the moment, the sealing ring 11 is pre-compressed to ensure valve sealing, the sealing is more tightly pressed after the water pressure is increased, high-pressure sealing is realized, under the condition that the valve body sealing 12 is pushed by the water, the second sealing is moved back, so that the sealing is larger in the compression amount, the sealing state that the sealing is realized, the high-pressure sealing is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a but two-way compound seal structure of automatically regulated type of butterfly valve, includes end cover (1) and valve body (7), its characterized in that: end cover (1) fixed mounting is in the bottom of valve body (7), the bottom of valve body (7) inner chamber is provided with short valve shaft (3), the top of valve body (7) inner chamber is provided with valve shaft (8), one side of valve body (7) is provided with stop gear (5), the inside of valve body (7) is provided with butterfly plate round pin (4), butterfly plate round pin (4) fixedly connected with butterfly plate (6) are passed through to the one end of short valve shaft (3), sealing washer (11) have been cup jointed in the outside activity of butterfly plate (6), the inside of valve body (7) is provided with valve body seal receptacle (12), the outside of valve body seal receptacle (12) is provided with O type circle (13), the inside of valve body (7) is provided with retaining ring (9).
2. The automatically adjustable two-way compound seal structure of a butterfly valve of claim 1, wherein: the sealing ring (11) is fixed outside the butterfly plate (6) through a pressing ring (10).
3. The automatically adjustable two-way compound seal structure of a butterfly valve of claim 1, wherein: a thrust ring (2) is arranged between the end cover (1) and the valve body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221900626.4U CN217713680U (en) | 2022-07-22 | 2022-07-22 | But two-way compound seal structure of automatically regulated type of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221900626.4U CN217713680U (en) | 2022-07-22 | 2022-07-22 | But two-way compound seal structure of automatically regulated type of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217713680U true CN217713680U (en) | 2022-11-01 |
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ID=83779390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221900626.4U Active CN217713680U (en) | 2022-07-22 | 2022-07-22 | But two-way compound seal structure of automatically regulated type of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217713680U (en) |
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2022
- 2022-07-22 CN CN202221900626.4U patent/CN217713680U/en active Active
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