CN202971965U - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN202971965U CN202971965U CN 201220695431 CN201220695431U CN202971965U CN 202971965 U CN202971965 U CN 202971965U CN 201220695431 CN201220695431 CN 201220695431 CN 201220695431 U CN201220695431 U CN 201220695431U CN 202971965 U CN202971965 U CN 202971965U
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- China
- Prior art keywords
- valve
- flange
- valve seat
- valve rod
- mounting hole
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- Expired - Lifetime
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Abstract
The utility model relates to a butterfly valve which comprises a valve body, a valve seat, a valve plate and a valve rod. The butterfly valve is characterized in that the valve body is in an integral rubber injection structure and comprises an annular base body, a first flange and a second flange, wherein the first flange and the second flange are arranged at two ends of the valve seat, and the annular base body is provided with a valve rod mounting hole. The annular base body is matched with a valve seat mounting hole in the valve body, two ends of the valve seat mounting hole are respectively provided with a first shoulder hole and a second shoulder hole. The valve plate and the valve rod are connected through a spline, and one end, far away from the valve plate, of the valve rod is provided with an axial limiting structure. The integral rubber injection structure is used in the valve seat, and dismounting can be achieved conveniently through the elastic deformation of the valve seat. The valve plate and the valve rod are connected through the spline, dismounting of the valve plate and the valve rod is also convenient, hard knocking to achieve dismounting is of no need, damage to parts caused by hard impacting is avoided, and therefore manpower is saved, and the service life of the butterfly valve is prolonged. A full flexible structure is used by the valve seat, the amount of the interference of matching of the valve plate and the valve seat can be reduced, due to the fact that the amount of the interference is small, the torque of opening and closing of the valve plate is small, so that friction is reduced, and fatigue resistance is improved.
Description
Technical field
The utility model relates to the flow control valve technical field, particularly a kind of butterfly valve.
Background technique
Butterfly valve claims again the reprint valve, is a kind of modulating valve simple in structure, and its switch that is used for the low pressure pipeline medium is controlled.Butterfly valve mainly by valve body, be arranged on valve seat on valve body, be movably arranged on the valve plate in valve seat and be arranged on the valve rod that is connected with valve plate on valve body.Drive valve plate by rotation valve rod and rotate to reach the purpose that opens and closes or regulate.At present, valve seat is made of rigid backbone outer ring and flexible rubber inner ring, and the corresponding mounting hole on rigid backbone inner ring and valve body forms drive fit, and is undertaken fastening by several screws of radial equipartition.Valve plate and valve rod adopt single or multiple bearing pins to be connected.The mounting structure of the mounting structure of above-mentioned valve seat and valve body and valve plate and valve rod exists installation, dismounting inconvenience when reality is used, the problem that wastes time and energy, particularly when dismounting is keeped in repair, need to could realize by the rigid mode such as knock, this kind dismounting mode can cause component to destroy, in addition, valve plate is installed also more difficult with again coordinating of valve rod.
Summary of the invention
The utility model provides a kind of easy accessibility for solving the technical problem that exists in known technology, saves manpower, fatigue resistance is strong, the butterfly valve of long service life.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of butterfly valve, comprise valve body, valve seat, valve plate and valve rod, it is characterized in that: described valve seat is integrated the rubber injection mold structure, it comprises ring-type matrix and symmetrical the first flange and the second flange that is located at ring-type matrix two ends, and described ring-type matrix is provided with the valve rod mounting hole that passes from its radial center position; Described ring-type matrix matches with valve seat mounting hole on valve body, and the two ends of valve seat mounting hole are respectively equipped with the first shoulder hole of matching with the first flange and the second flange and the second shoulder hole; Described valve plate is connected the detachable connection of spline with valve rod, valve rod is provided with axial limit structure away from an end of valve plate.
The technological scheme that the utility model can also be taked is:
Be provided with spacing preiection on the periphery of described ring-type matrix between two flanges; The valve seat mounting hole of described valve body is provided with spacing preiection and forms the locating slot that plug-in mounting coordinates.
The interior edge face of described the first flange is that the inclined-plane coordinates with the bottom surface in the first shoulder hole, and the interior edge face of the second flange is that the inclined-plane coordinates with the bottom surface in the second shoulder hole, and two inclined-planes coordinate and are arranged symmetrically.
The interior edge face of described the first flange is that shoulder coordinates with the bottom surface in the first shoulder hole, and the interior edge face of the second flange is that shoulder coordinates with the bottom surface in the second shoulder hole, and two shoulders coordinate and are arranged symmetrically.
Described axial limit structure is made of the gland that is installed on axle bumper spare on valve rod, is located at the axle bumper spare outside, and described gland is sleeved on valve rod and by screw and is packed on valve body.
Be equipped with several and body concentric the first annular projection of cyclic group on the exterior edge face of described the first flange and the second flange.
Described valve rod mounting hole is provided with several the second annular projections.
Position at mounting hole on the periphery of described ring-type matrix is provided with positioning boss with one heart.
Advantage and the good effect that the utlity model has are:
1, valve seat adopts one rubber injection mold structure, can conveniently realize installation and removal by its resiliently deformable; Valve plate and valve rod are by spline joint, and both installation and removal are also more convenient, do not need to realize by rigid knocking, and have avoided the destruction of component being caused due to rigid impact, thereby have saved manpower and extended working life of butterfly valve.
2, valve seat adopts full flexible structure, than existing combination of rigidity and flexibility structure, because its resiliently deformable increases, therefore can reduce the magnitude of interference that valve plate coordinates with valve seat, is 1.6mm as the magnitude of interference of original structure, and existing structure is got 0.8mm and can be met the demands.Because magnitude of interference reduces, cause the moment of torsion that valve plate opens and closes to reduce, thereby less friction has improved fatigue resistance.
Description of drawings
Fig. 1 is the structural representation of the first mode of execution;
Fig. 2 is the A place partial enlarged drawing of Fig. 1;
Fig. 3 is the structural representation of valve body in Fig. 1;
Fig. 4 is the structural representation of valve seat in Fig. 1;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the C place partial enlarged drawing in Fig. 5;
Fig. 7 is the structural representation of the second mode of execution;
Fig. 8 is D place partial enlarged drawing in Fig. 7;
Fig. 9 is the structural representation of valve body in Fig. 7;
Figure 10 is the structural representation of valve seat in Fig. 7;
Figure 11 is 10 E-E sectional view;
Figure 12 is F place partial enlarged drawing in Figure 11.
In figure: 1, valve body; 1-1, valve seat mounting hole; 1-1-1, locating slot; 1-2, the first shoulder hole; 1-3, the second shoulder hole; 2, valve seat; 2-1, ring-type matrix; 2-1-1, spacing preiection; 2-2, the first flange; 2-3, the second flange; 2-4, valve rod mounting hole; 2-5, the first annular projection; 2-6, the second annular projection; 2-7, positioning boss; 2-8, shoulder groove; 3, valve plate; 4, valve rod; 5, axle bumper spare; 6, gland.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Embodiment 1:
See also Fig. 1-6, a kind of butterfly valve comprises valve body 1, valve seat 2, valve plate 3 and valve rod 4.Described valve seat is integrated the rubber injection mold structure, and it comprises ring-type matrix 2-1 and symmetrical the first flange 2-2 and the second flange 2-3 that is located at ring-type matrix two ends, and described ring-type matrix is provided with the valve rod mounting hole 2-4 that passes from its radial center position.Described ring-type matrix matches with valve seat mounting hole 1-1 on valve body, and the two ends of valve seat mounting hole are respectively equipped with the first shoulder hole 1-2 and the second shoulder hole 1-3 that matches with the first flange and the second flange.Concrete, after valve seat was arranged on valve body, the first flange was embedded in the first shoulder hole, and the second flange is embedded in the second shoulder hole, and this cooperating structure forms axially locating to valve seat, has guaranteed in use, and valve seat axial jumping can not occur.Described valve plate is connected the detachable connection of spline with valve rod, valve rod is provided with axial limit structure away from an end of valve plate.
In technique scheme: further be provided with spacing preiection 2-1-1 on the periphery of described ring-type matrix between two flanges, concrete, according to actual applying working condition, spacing preiection can be one or more.The valve seat mounting hole of described valve body is provided with spacing preiection and forms the locating slot 1-1-1 that plug-in mounting coordinates.Spacing preiection coordinates with locating slot, has improved the fastness that valve seat is installed, and is specially adapted to the applying working condition of Large Diameter Pipeline and large flow.
In technique scheme: the interior edge face of described the first flange is that the inclined-plane coordinates with the bottom surface in the first shoulder hole, and the interior edge face of the second flange is that the inclined-plane coordinates with the bottom surface in the second shoulder hole, and two inclined-planes coordinate and are arranged symmetrically.The inclined-plane cooperating structure at two ends has improved the degree of being adjacent to of flange interior edge face with the cooperation of bottom surface, corresponding shoulder hole.This cooperating structure plays on the one hand and prevents that valve seat from opening at the in-plane that is parallel to two flanges, when preventing from the other hand opening and closing with valve plate, because being subjected to the effect of moment of rotation, the problem that occurs jumping.
In technique scheme: described axial limit structure is made of the gland 6 that is installed on axle bumper spare 5 on valve rod, is located at the axle bumper spare outside.Described gland is sleeved on valve rod and by screw and is packed on valve body.Above-mentioned axle bumper spare can adopt circlip for shaft or divided ring.This axial limit structure has easy accessibility, advantage that can repeated multiple times use.
In technique scheme: plane structure can be adopted in two flange exterior edge faces.Be to increase the sealing that butterfly valve is connected with the two ends pipeline, be equipped with several and body concentric the first annular projection 2-5 of cyclic group on the exterior edge face of two flanges, several first ring-types convex to form the radially multiple-sealed structure of layout.The sealing that coordinates with valve seat for improving valve rod prevents interior leakage, and the valve rod mounting hole of described valve seat is provided with several second annular projections 2-6.Several second ring-types convex into along the axial arranged multiple-sealed structure of valve rod, have also improved the bearing capacity of butterfly valve simultaneously.
In technique scheme: the position at the valve rod mounting hole on the periphery of described ring-type matrix further arranges positioning boss 2-7 with one heart.This positioning boss has the effect of automatic capturing when valve seat is installed, thereby has facilitated installation, can be easy to realize the concentric of valve seat upper valve rod mounting hole and valve body upper valve rod mounting hole.
Embodiment 2:
See also Fig. 7-12, the present embodiment with embodiment 1 difference is: the interior edge face of described the first flange is that shoulder coordinates with the bottom surface in the first shoulder hole, and the interior edge face of the second flange is that shoulder coordinates with the bottom surface in the second shoulder hole, and two shoulders coordinate and are arranged symmetrically.Concrete, the position that is connected with the ring-type matrix on the interior edge face of two flanges is provided with shoulder groove 2-8, is respectively equipped with the annular portions in insertion shoulder groove in two shoulder holes.This shoulder coordinates the two-sided occlusion structure of formation, and it is similar that it plays a role the effect that coordinates with above-mentioned inclined-plane, and its effect is better than above-mentioned inclined-plane cooperating structure.
Claims (8)
1. butterfly valve, comprise valve body, valve seat, valve plate and valve rod, it is characterized in that: described valve seat is integrated the rubber injection mold structure, it comprises ring-type matrix and symmetrical the first flange and the second flange that is located at ring-type matrix two ends, and described ring-type matrix is provided with the valve rod mounting hole that passes from its radial center position; Described ring-type matrix matches with valve seat mounting hole on valve body, and the two ends of valve seat mounting hole are respectively equipped with the first shoulder hole of matching with the first flange and the second flange and the second shoulder hole; Described valve plate is connected the detachable connection of spline with valve rod, valve rod is provided with axial limit structure away from an end of valve plate.
2. butterfly valve according to claim 1, is characterized in that: be provided with spacing preiection on the periphery of described ring-type matrix between two flanges; The valve seat mounting hole of described valve body is provided with spacing preiection and forms the locating slot that plug-in mounting coordinates.
3. butterfly valve according to claim 1 and 2 is characterized in that: the interior edge face of described the first flange is that the inclined-plane coordinates with the bottom surface in the first shoulder hole, and the interior edge face of the second flange is that the inclined-plane coordinates with the bottom surface in the second shoulder hole, and two inclined-planes coordinate and are arranged symmetrically.
4. butterfly valve according to claim 1 and 2 is characterized in that: the interior edge face of described the first flange is that shoulder coordinates with the bottom surface in the first shoulder hole, and the interior edge face of the second flange is that shoulder coordinates with the bottom surface in the second shoulder hole, and two shoulders coordinate and are arranged symmetrically.
5. butterfly valve according to claim 1 and 2 is characterized in that: described axial limit structure is made of the gland that is installed on axle bumper spare on valve rod, is located at the axle bumper spare outside, and described gland is sleeved on valve rod and by screw and is packed on valve body.
6. butterfly valve according to claim 1 and 2 is characterized in that: be equipped with several and body concentric the first annular projection of cyclic group on the exterior edge face of described the first flange and the second flange.
7. butterfly valve according to claim 1 and 2, it is characterized in that: described valve rod mounting hole is provided with several the second annular projections.
8. butterfly valve according to claim 1 and 2, it is characterized in that: the position at the valve rod mounting hole on the periphery of described ring-type matrix is provided with positioning boss with one heart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695431 CN202971965U (en) | 2012-12-14 | 2012-12-14 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220695431 CN202971965U (en) | 2012-12-14 | 2012-12-14 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971965U true CN202971965U (en) | 2013-06-05 |
Family
ID=48513041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220695431 Expired - Lifetime CN202971965U (en) | 2012-12-14 | 2012-12-14 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996829A (en) * | 2012-12-14 | 2013-03-27 | 天津市永拓机械有限公司 | Butterfly valve |
-
2012
- 2012-12-14 CN CN 201220695431 patent/CN202971965U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996829A (en) * | 2012-12-14 | 2013-03-27 | 天津市永拓机械有限公司 | Butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |