CN220891095U - Eccentric butterfly valve suitable for high pressure and good in sealing performance - Google Patents
Eccentric butterfly valve suitable for high pressure and good in sealing performance Download PDFInfo
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- CN220891095U CN220891095U CN202322308147.4U CN202322308147U CN220891095U CN 220891095 U CN220891095 U CN 220891095U CN 202322308147 U CN202322308147 U CN 202322308147U CN 220891095 U CN220891095 U CN 220891095U
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- butterfly
- high pressure
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- 238000007789 sealing Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 244000309464 bull Species 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- JRHNUZCXXOTJCA-UHFFFAOYSA-N 1-fluoropropane Chemical compound CCCF JRHNUZCXXOTJCA-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an eccentric butterfly valve suitable for high pressure and good in sealing performance, which relates to the technical field of eccentric butterfly valves and comprises a valve body, wherein a sealing ring is fixedly arranged in an inner cavity of the valve body, a sealing mechanism is fixedly arranged in the inner cavity of the sealing ring, a transmission mechanism is fixedly arranged at the top of the valve body, the transmission mechanism comprises a valve cover, the bottom of the valve cover is fixedly connected with the top of the valve body, a supporting plate is fixedly arranged in the inner cavity of the valve cover, one side of the supporting plate is penetrated and provided with a rotating rod, one side of the rotating rod, which is far away from the valve cover, is fixedly provided with a handle, the other side of the rotating rod penetrates and is fixedly sleeved with a driving bevel gear, the top of the inner cavity of the valve cover is movably connected with a connecting rod through a bearing, and a driven bevel gear is fixedly sleeved on the outer surface of the connecting rod, so that the butterfly valve is fixed between a butterfly plate and the valve body, and the butterfly plate is not easy to deviate and deform, and the sealing performance and the practicability effect of the eccentric butterfly valve are improved.
Description
Technical Field
The utility model relates to the technical field of eccentric butterfly valves, in particular to an eccentric butterfly valve which is suitable for high pressure and has good sealing performance.
Background
The eccentric butterfly valve is divided into a single eccentric butterfly valve, a double eccentric butterfly valve, a triple eccentric butterfly valve and a variable eccentric butterfly valve. Opposite the concentric butterfly valve. The axis of the valve rod is deviated from the center of the disc and the center of the body, and the butterfly valve with the sealing pair being an inclined cone is called an eccentric butterfly valve.
Under a high-pressure environment, the butterfly plate in the valve body is extruded and is easy to loosen and deform, so that the tightness and the service life of the valve body are affected; secondly, be difficult to effectively fix between butterfly plate and the valve body, the impact force that rivers erode produced probably makes the butterfly plate cause the skew or warp, makes rivers flow from gap, has reduced eccentric butterfly valve's leakproofness and practicality.
Disclosure of utility model
The utility model aims to provide an eccentric butterfly valve which is applicable to high pressure and has good sealing performance, and solves the technical problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the eccentric butterfly valve suitable for high pressure and good in sealing performance comprises a valve body and a valve rod, wherein a sealing ring is fixedly arranged in an inner cavity of the valve body;
The inner chamber of sealing washer is fixed to be provided with sealing mechanism, sealing mechanism includes:
The two butterfly plates are symmetrically arranged on two sides of the valve rod, a lifting groove is formed in the inner cavity of the valve rod in a penetrating mode, lifting blocks are arranged in the inner cavity of the lifting groove in a sliding mode, the lifting blocks are located at the top of the inner cavity of the lifting groove in a penetrating mode and fixedly connected with a pull rod in a rotating mode, the top of the pull rod penetrates through the valve cover and is fixedly provided with a push plate, external threads are formed in the surface of the pull rod, and internal threads matched with the valve rod are formed in the portion, in contact with the external threads of the pull rod, of the valve rod;
the lifting block is characterized in that brackets are symmetrically arranged on two sides of the lifting block, a moving block is fixedly arranged on one side, away from the lifting block, of the brackets, telescopic rods are symmetrically arranged on the top and the bottom of the moving block, and positioning blocks are fixedly arranged on one side, away from the moving block, of the telescopic rods.
Optionally, a transmission mechanism is fixedly arranged at the top of the valve body;
The transmission mechanism comprises:
the valve gap, the bottom of valve gap with the top fixed connection of valve body, the inner chamber of valve gap is fixed to be provided with the backup pad, one side of backup pad runs through and is provided with the bull stick, the bull stick is kept away from one side of valve gap is fixed to be provided with the handle, the opposite side of bull stick runs through the backup pad and fixed cover is equipped with the initiative bevel gear, the top of valve gap inner chamber has the connecting rod through bearing swing joint.
Optionally, the fixed cover of surface of connecting rod is equipped with driven bevel gear, driven bevel gear with drive bevel gear meshes mutually, the bottom of connecting rod runs through the valve body and with valve rod fixed connection, the bottom of valve rod runs through the sealing washer and with the bottom of valve body inner chamber passes through bearing swing joint.
Optionally, an extension spring is fixedly arranged on one side, far away from the bracket, of the moving block and the inner wall of the butterfly plate.
Optionally, the inner wall symmetry of valve body is provided with the cooperation locating piece and uses the locating hole, the outer wall of pull rod with the inner wall of lifter is through bearing swing joint.
Optionally, the outer wall of butterfly plate and the inner wall of sealing washer are sliding contact, the sealing washer is made by polyurethane rubber and four propyl fluorine rubber material.
Compared with the prior art, the utility model has the following beneficial effects:
1. In the utility model, when the valve is in a high-pressure environment, the lifting blocks are driven by the pull rod to synchronously move downwards in the lifting grooves in the valve rod, the lifting blocks drive the brackets at two sides to move downwards, so that the moving blocks at the bottom of the brackets are close to the inner wall of the butterfly plate, the telescopic rods at the top and the bottom drive the positioning blocks to be inserted into the positioning holes in the valve body, the butterfly plate and the valve body are fixedly supported, the outer wall of the butterfly plate is not easy to deform, and the sealing property and the service life of the valve body are improved.
2. According to the utility model, the butterfly plate and the valve body can be fixed by controlling the four groups of positioning blocks through the twisting of the push plate, so that the fixation between the butterfly plate and the sealing ring as well as between the butterfly plate and the valve body can be further improved, the butterfly plate is more stable than the two groups of positioning mechanisms used in the prior art, the butterfly plate is not easy to deviate, and the practicability and the tightness of the eccentric butterfly valve are improved.
Drawings
FIG. 1 is a front view of the structure of the present utility model;
FIG. 2 is a front cross-sectional view of the transmission of the present utility model;
Fig. 3 is a side cross-sectional view of the sealing mechanism of the present utility model.
In the figure: 1-transmission mechanism, 101-connecting rod, 102-driven bevel gear, 103-valve cover, 104-drive bevel gear, 105-rotating rod, 106-handle, 107-supporting plate, 2-valve body, 3-sealing ring, 4-sealing mechanism, 41-lifting block, 42-bracket, 43-lifting groove, 44-butterfly plate, 45-moving block, 46-extension spring, 47-telescopic rod, 48-positioning block, 49-pull rod, 410-push plate and 5-valve rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
Referring to fig. 1 to 3, the present utility model provides a technical solution: the eccentric butterfly valve suitable for high pressure and good in sealing performance comprises a valve body 2 and a valve rod 5, wherein a sealing ring 3 is fixedly arranged in an inner cavity of the valve body 2;
the inner chamber of sealing washer 3 is fixed to be provided with sealing mechanism 4, and sealing mechanism 4 includes:
The butterfly plate 44, the inner cavity of the valve rod 5 runs through and has offered the lift groove 43, the inner cavity of the lift groove 43 slides and is provided with the lifting block 41, the top that the lifting block 41 locates at the inner cavity of the lift groove 43 runs through and the fixed axis rotates and connects with the tie rod 49, the top of the tie rod 49 runs through the valve bonnet 103 and fixedly has push plates 410, the surface of the tie rod 49 has offered the external screw thread, the part that the valve rod 5 contacts with external screw thread of the tie rod 49 has offered the internal screw thread that is matched with it;
The both sides of lifting block 41 all are provided with support 42 symmetrically, and support 42 is kept away from lifting block 41's one side fixedly and is provided with movable block 45, and movable block 45's top and bottom all are provided with telescopic link 47 symmetrically, and one side that movable block 45 was kept away from to telescopic link 47 all is fixedly provided with locating piece 48.
An extension spring 46 is fixedly arranged on one side of the moving block 45 away from the bracket 42 and the inner wall of the butterfly plate 44.
It should be noted that, the valve rod 5 drives the butterfly plates 44 at two sides to rotate, the butterfly plates 44 are controlled to be in close contact with the sealing ring 3 on the inner wall of the valve body 2, then the valve rod 5 is kept motionless and the push plate 410 is twisted, the threaded fit between the valve rod 5 and the pull rod 49 is utilized to drive the pull rod 49 at the bottom to move downwards, the pull rod 49 drives the lifting block 41 to synchronously move downwards in the lifting groove 43 in the valve rod 5, the lifting block 41 drives the brackets 42 at two sides to move downwards, the moving block 45 at the bottom of the brackets 42 approaches the inner wall of the butterfly plates 44, the tension springs 46 are extruded, the telescopic rods 47 at the top and the bottom drive the positioning blocks 48 to be inserted into the positioning holes in the valve body 2, the butterfly plates 44 and the valve body 2 are fixedly supported, the outer wall of the butterfly plates 44 is not easy to deform, and the tightness and the service life of the valve body 2 are improved.
The number of the butterfly plates 44 is two, the two butterfly plates 44 are symmetrically arranged on two sides of the valve rod 5, and two positioning blocks 48 are respectively arranged in the two butterfly plates 44.
Therefore, the four groups of positioning blocks 48 can be controlled to fix the butterfly plate 44 and the valve body 2 through the twisting of the push plate 410, the fixation between the butterfly plate 44 and the sealing ring 3 and the valve body 2 can be further improved, the butterfly plate 44 is more stable than the two groups of positioning mechanisms used conventionally, the butterfly plate 44 is not easy to deviate, and the practicability and the tightness of the eccentric butterfly valve are improved.
Furthermore, the top of the valve body 2 is fixedly provided with a transmission mechanism 1;
The transmission mechanism 1 includes:
The valve gap 103, the bottom of valve gap 103 and the top fixed connection of valve body 2, the inner chamber of valve gap 103 is fixed to be provided with backup pad 107, and one side of backup pad 107 runs through and is provided with bull stick 105, and one side that bull stick 105 kept away from valve gap 103 is fixed to be provided with handle 106, and the opposite side of bull stick 105 runs through backup pad 107 and fixed cover is equipped with initiative bevel gear 104, and the top of valve gap 103 inner chamber has connecting rod 101 through bearing swing joint.
The outer surface of the connecting rod 101 is fixedly sleeved with a driven bevel gear 102, the driven bevel gear 102 is meshed with a drive bevel gear 104, the bottom of the connecting rod 101 penetrates through the valve body 2 and is fixedly connected with the valve rod 5, and the bottom of the valve rod 5 penetrates through the sealing ring 3 and is movably connected with the bottom of the inner cavity of the valve body 2 through a bearing.
It is worth noting that, through rotating handle 106, make it drive bull stick 105 and initiative bevel gear 104 rotate, backup pad 107 supports bull stick 105, through initiative bevel gear 104 and driven bevel gear 102 meshing motion, make driven bevel gear 102 in the valve gap 103 drive connecting rod 101 rotate, drive the valve rod 5 of connecting rod 101 bottom and rotate in step, the user of being convenient for controls opening and close of valve body 2, has improved the convenience that valve body 2 used.
Embodiment two:
Further, on the basis of the above embodiment, the inner wall of the valve body 2 is symmetrically provided with positioning holes matched with the positioning blocks 48, and the outer wall of the pull rod 49 is movably connected with the inner wall of the lifting block 41 through bearings.
The outer wall of the butterfly plate 44 is in sliding contact with the inner wall of the sealing ring 3, and the sealing ring 3 is made of polyurethane rubber and tetrapropylacetonate rubber materials.
More specifically, in this embodiment, the stability between the butterfly plate 44 and the valve body 2 can be improved by fixing the positioning block 48 in the positioning hole, so that the butterfly plate 44 is not easy to deviate and deform, and the tightness in the valve body 2 is improved; the valve rod 5 can drive the inside pull rod 49 to synchronously rotate in the rotating process, the pull rod 49 rotates in the lifting block 41 through a bearing, the follow-up pull rod 49 is not influenced to drive the lifting block 41 to move up and down, the butterfly plate 44 can be in contact with the sealing ring 3 in the rotating process, and the practicability and the tightness of the eccentric butterfly valve are improved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Be applicable to high pressure and good eccentric butterfly valve of leakproofness, including valve gap (103), valve body (2) and valve rod (5), its characterized in that: a sealing ring (3) is fixedly arranged in the inner cavity of the valve body (2);
the inner cavity of the sealing ring (3) is fixedly provided with a sealing mechanism (4), and the sealing mechanism (4) comprises:
The valve rod comprises two butterfly plates (44), wherein the two butterfly plates (44) are symmetrically arranged on two sides of the valve rod (5), a lifting groove (43) is formed in the inner cavity of the valve rod (5) in a penetrating mode, a lifting block (41) is arranged in the inner cavity of the lifting groove (43) in a sliding mode, the lifting block (41) is located at the top of the inner cavity of the lifting groove (43) in a penetrating mode and fixedly connected with a pull rod (49) in a rotating mode, the top of the pull rod (49) penetrates through the valve cover (103) and is fixedly provided with a push plate (410), external threads are formed in the surface of the pull rod (49), and internal threads matched with the external threads of the pull rod (49) are formed in the contact portion of the valve rod (5);
The lifting block is characterized in that brackets (42) are symmetrically arranged on two sides of the lifting block (41), a moving block (45) is fixedly arranged on one side, away from the lifting block (41), of the bracket (42), telescopic rods (47) are symmetrically arranged on the top and the bottom of the moving block (45), and positioning blocks (48) are fixedly arranged on one side, away from the moving block (45), of the telescopic rods (47).
2. The eccentric butterfly valve of claim 1 adapted for high pressure and having good sealing properties, wherein: a transmission mechanism (1) is fixedly arranged at the top of the valve body (2);
The transmission mechanism (1) comprises:
Valve gap (103), the bottom of valve gap (103) with the top fixed connection of valve body (2), the fixed backup pad (107) that is provided with in inner chamber of valve gap (103), one side of backup pad (107) is run through and is provided with bull stick (105), bull stick (105) are kept away from one side of valve gap (103) is fixed to be provided with handle (106), the opposite side of bull stick (105) is run through backup pad (107) and fixed cover are equipped with initiative bevel gear (104), the top of valve gap (103) inner chamber has connecting rod (101) through bearing swing joint.
3. The eccentric butterfly valve of claim 2 adapted for high pressure and having good sealing properties, wherein: the external surface fixed cover of connecting rod (101) is equipped with driven bevel gear (102), driven bevel gear (102) with initiative bevel gear (104) are engaged with, the bottom of connecting rod (101) is run through valve body (2) and with valve rod (5) fixed connection, the bottom of valve rod (5) is run through sealing washer (3) and with the bottom of valve body (2) inner chamber is through bearing swing joint.
4. The eccentric butterfly valve of claim 1 adapted for high pressure and having good sealing properties, wherein: and an extension spring (46) is fixedly arranged on one side, far away from the bracket (42), of the moving block (45) and the inner wall of the butterfly plate (44).
5. The eccentric butterfly valve of claim 1 adapted for high pressure and having good sealing properties, wherein: the inner wall of the valve body (2) is symmetrically provided with positioning holes matched with the positioning blocks (48), and the outer wall of the pull rod (49) is movably connected with the inner wall of the lifting block (41) through a bearing.
6. The eccentric butterfly valve of claim 4 adapted for high pressure and having good sealing properties, wherein: the outer wall of the butterfly plate (44) is in sliding contact with the inner wall of the sealing ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322308147.4U CN220891095U (en) | 2023-08-25 | 2023-08-25 | Eccentric butterfly valve suitable for high pressure and good in sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322308147.4U CN220891095U (en) | 2023-08-25 | 2023-08-25 | Eccentric butterfly valve suitable for high pressure and good in sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891095U true CN220891095U (en) | 2024-05-03 |
Family
ID=90874026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322308147.4U Active CN220891095U (en) | 2023-08-25 | 2023-08-25 | Eccentric butterfly valve suitable for high pressure and good in sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891095U (en) |
-
2023
- 2023-08-25 CN CN202322308147.4U patent/CN220891095U/en active Active
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