CN201162837Y - Butterfly valve with hollow butterfly plate - Google Patents
Butterfly valve with hollow butterfly plate Download PDFInfo
- Publication number
- CN201162837Y CN201162837Y CNU2008200102043U CN200820010204U CN201162837Y CN 201162837 Y CN201162837 Y CN 201162837Y CN U2008200102043 U CNU2008200102043 U CN U2008200102043U CN 200820010204 U CN200820010204 U CN 200820010204U CN 201162837 Y CN201162837 Y CN 201162837Y
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- CN
- China
- Prior art keywords
- valve
- valve rod
- butterfly plate
- butterfly
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000463 material Substances 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 241001484259 Lacuna Species 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to a hollow butterfly valve in a butterfly board, which can ensure that the butterfly board has enough strength and minimum weight at the same time under the conditions of same pressure, caliber and material. The butterfly valve comprises a valve body, a butterfly board, a valve seat, an upper valve rod, a lower valve rod, an upper bearing, a lower bearing, a key, connecting bolts and nuts between the upper valve rod and the lower valve rod, a gasket, a bottom cover and a dustproof ring; wherein, the butterfly board adopts a hollow butterfly board, which is designed into a lens shape. The upper bearing and the lower bearing are arranged inside a shaft hole of the valve body provided with an opening in the middle. The valve seat covers the inner cavity of the whole valve body. The upper valve rod is divided into three parts: a polished rod part with key slots, a polished rod part and a prism shaft part. The upper valve rod is connected with the lower valve rod through a threaded stud; one end of the threaded stud is tightly screwed by the nut after going through a hole of the lower valve rod. The hollow butterfly valve improves the flow capability of the valve without leaving any medium, due to the streamlined external surface, therefore, the hollow butterfly valve is applicable to the occasions with corrosive medium. Furthermore, the valve with abrasion resistant performance also reduces the unsealing torque.
Description
Technical field:
The utility model relates to center line soft sealing butterfly valve technical field, and exactly, it is a kind of hollow butterfly plate butterfly valve.
Background technique:.
Heavy caliber (more than the DN500) center line soft sealing butterfly valve in existing, butterfly plate all is designed to the structure of dull and stereotyped reinforcement (horizontal bar, diagonal bar or latticed muscle), and trafficability performance is poor, and muscle and plate junction easily retain medium, and its decay resistance is also poor.
Butterfly plate and valve rod adopt pin to be connected, and making has increased leak source on the butterfly plate, and the joint of pin and butterfly plate is easily corroded and reduced the reliability of transmission.And butterfly plate and valve rod adopt when not having pin and being connected, the location of butterfly plate and valve rod all is spacing with gland by the shaft shoulder, or slot on valve rod shimming, cam pin etc., and these structure common features are to have increased frictional force, make and open moment of torsion and increase, and valve rod and bounding means are easy to wear.
Summary of the invention:
For overcome existing in perishable, easy to wear, the trafficability performance difference of heavy caliber (more than the DN500) butterfly valve and open the too big shortcoming of moment of torsion, the utility model provides a kind of hollow butterfly plate butterfly valve, is particularly suitable for middle large-diameter butterfly valve (more than the DN500).
This hollow butterfly plate butterfly valve, comprise valve body 5, butterfly plate 8, valve seat 6, upper valve rod 12, lower valve rod 7, upper bearing (metal) 10, lower bearing 4, key 13, go up connecting bolt 9 between the lower valve rod and nut 2, pad 3, bottom 1, dust ring 11, it is characterized in that: butterfly plate 8 adopts hollow butterfly plates, does not have the pin integrated type between hollow butterfly plate 8 and valve rod and is connected; Hollow butterfly plate 8 is designed to lens shape, and is provided with cylindrical stiffening rib in inside.Upper bearing (metal) 10 and lower bearing 4 are installed in the axis hole of valve body 5, and bearing is a self oiling bearing, and there is opening the centre, and certain elasticity is arranged, and can have axis hole with valve body to closely cooperate and that string does not take place is moving; Valve seat 6 covers the inner chamber of whole valve body 5; Upper valve rod 12 is divided into three parts: polished rod band keyway partial L, polished rod part M, prismatic shaft portion N.Polished rod band keyway part is connected with drive unit; One side of polished rod part pierces in the bearing with valve body 5, and opposite side pierces into the unthreaded hole part of hollow butterfly plate; The prismatic hole of passing butterfly plate of prismatic axle and hollow butterfly plate.Link to each other by a stud bolt 9 between upper valve rod 12 and the lower valve rod 7.After one end of stud bolt 9 passes the hole of lower valve rod 7, tighten with nut 2.
The optical axis part of upper valve rod 12, lower valve rod 7 is used to support butterfly plate 8 with hollow butterfly plate 8 Spielpassung, and the prismatic shaft portion of upper valve rod 12 cooperates with the prismatic interporal lacuna of butterfly plate 8 and is used for transmitting torque.Butterfly plate 8 is provided with the plane shoulder, limits between upper valve rod 12 and the lower valve rod 7 to be connected by stud 9, and the one end is screwed to the lower end of upper valve rod 12, after the other end passes the hole of lower valve rod 7, tighten with nut 2, like this, butterfly plate 8, upper valve rod 12, lower valve rod 7 just become as a whole.After valve is installed because the radially degrees of freedom of butterfly plate 8 limited by valve seat 6, thereby with butterfly plate 8 be connected to become one on the whole valve rod 12 also be limited with lower valve rod 7 axial freedoms, so do not need thrust bearing or other limit structure.Just make lower valve rod that axial float does not take place, realized not having pin and connected.Like this, upper valve rod drives together smooth rotation of butterfly plate lower valve rod under the effect of drive unit, realize the unlatching and the regulatory function of valve.Cylinder stiffening rib in the hollow butterfly plate (8) is symmetrical arranged by axis.
The beneficial effects of the utility model are, under the situation of uniform pressure, bore, material, hollow butterfly plate is when guaranteeing that butterfly plate has sufficient intensity, and weight is the lightest.Conversely, under the identical situation of weight, material, bore, the pressure maximum that hollow butterfly plate bore.This structure has been saved material, has reduced cost.Its fairshaped outer surface has improved the negotiability of valve, and does not retain medium, the occasion of the medium that is more suitable for being corrosive.Also reduced the unlatching moment of torsion, wear-resistant.
Description of drawings:
Fig. 1 is the perspective view of the utility model mode of execution.
Fig. 2 is a plan view of the present utility model.
Fig. 3 is the plan view of Fig. 2.
Fig. 4 is a side view of the present utility model
Fig. 5 is the partial enlarged drawing of valve rod place sealing
Fig. 6 is the structural representation that self lubrication bearing is connected with valve body, upper valve rod or lower valve rod place
Fig. 7 is the sectional view of butterfly plate and valve rod joint
Embodiment:
Valve body adopts the wafer type that is easy to be connected with pipeline to lack structure, this example adopts the Connecting format of U type flange, upper bearing (metal) 10 and lower bearing 4 are installed in the axis hole of valve body 5, bearing is a self oiling bearing, there is opening the centre, certain elasticity is arranged, can have axis hole with valve body to closely cooperate and that string does not take place is moving.As shown in Figure 7.
By structure A among Fig. 2, structure B, structure C connect mutually and locate among Fig. 2 between valve body 5 and the valve seat 6, need not bonding or other part connects.Be provided with the sealing that the coil structures of three seals shown in 7 is as shown assisted the valve rod place in valve rod and valve seat cooperation place.Valve seat 6 covers the inner chamber of whole valve body 5, is detachable connection, can carry out demolition and replacement when valve seat damage, and valve behind the replacing valve seat and former valve basically identical, as long as other part does not damage, valve seat can repeatedly be changed, thereby prolongs overall working life.
Adopt interference fit between butterfly plate 8 and the valve seat 6, the size of its magnitude of interference is decided by the working pressure of valve, and pressure is big more, and magnitude of interference is big more.Butterfly plate 8 is designed to lens shape such as Fig. 2, Fig. 3, shown in Figure 4, profile is that the sphere cylndrical surface is passed through mutually, the place's of passing through round-corner transition mutually, except that axis hole place and excircle, remaining part is uniform wall thickness (its thickness is the optimum value that obtains after finite element analysis and the consideration casting technique), for increasing the rigidity of butterfly plate, be provided with reinforcing rib structure D in inside.Stiffening rib is symmetrical arranged by axis, can be provided with a plurality of according to the size of butterfly plate bore and the needs of intensity.Sealing surface is a sphere.
The dust ring 11 at upper valve rod 12 places is an A profile shaft end seal ring, is installed in valve body 5 stop portions, also plays the effect that things such as preventing dust enters valve internal.
Embodiment 2:
Valve body can adopt the Connecting format of single flange, and other is with embodiment 1.
Embodiment 3:
Valve body can adopt non-flanged Connecting format, and other is with embodiment 1.
Claims (6)
1, hollow butterfly plate butterfly valve, comprise valve body (5), butterfly plate (8), valve seat (6), upper valve rod (12), lower valve rod (7), upper bearing (metal) (10), lower bearing (4), key (13), connecting bolt between the last lower valve rod (9) and nut (2), pad (3), following protective cover (1), dust ring (11), it is characterized in that: butterfly plate (8) adopts hollow butterfly plate, be connected with nothing pin integrated type between the valve rod, upper bearing (metal) (10) and lower bearing (4) are installed in the axis hole of valve body (5), be connected by emboss pit between valve body (5) and the valve seat (6), be provided with ring structure in valve rod and valve seat (6) cooperation place and carry out the Auxiliary valves rod seal, adopt interference to join entirely between butterfly plate (8) and the valve seat (6), upper valve rod (12) is divided into three parts, polished rod band keyway part, the polished rod part, the prismatic shaft portion, polished rod band keyway part is connected with drive unit; One section of the polished rod part bearing hole Spielpassung with valve body (5), another section penetrates the unthreaded hole part of hollow butterfly plate (8), plays support hollow butterfly plate (8); The prismatic shaft portion cooperates with the prismatic interporal lacuna of hollow butterfly plate (8), play transmitting torque, lower valve rod (7) is polished rod, middle porose, in the bearing hole of one section valve body of packing into (5) of lower valve rod, another section packed in the unthreaded hole of hollow butterfly plate (8), and upper valve rod (12) plays the effect of supporting butterfly plate together, hollow butterfly plate (8) is provided with shoulder, be used to limit the position of upper valve rod (12) and lower valve rod (7), be connected by a stud bolt (9) between upper valve rod (12) and the lower valve rod (7), one end of stud bolt (9) is screwed to the lower end of upper valve rod (12), after the other end passes the hole of lower valve rod (7), tighten, make hollow butterfly plate (8) with nut (2), upper valve rod (12), it is as a whole that lower valve rod (7) becomes.
2, according to claims 1 described hollow butterfly plate butterfly valve, it is characterized in that: hollow butterfly plate (9) is designed to lens shape, the form of boring, profile is that sphere passes through mutually with the cylndrical surface, the place's of passing through round-corner transition mutually, except that axis hole and cylindrical, the remaining part uniform wall thickness, and being provided with the cylinder stiffening rib in inside, sealing surface is a sphere.
3, hollow butterfly plate butterfly valve according to claim 1 is characterized in that: bottom (1) is a plastic materials.
4, hollow butterfly plate butterfly valve according to claim 1 is characterized in that: the dust ring that is installed in valve body (5) seam is the shaft end seal circle.
5, hollow butterfly plate butterfly valve according to claim 1 is characterized in that: the cylinder stiffening rib in the hollow butterfly plate (8) is symmetrical arranged by axis.
6, hollow butterfly plate butterfly valve according to claim 1 is characterized in that: valve body (5) can adopt the Connecting format of single flange, or adopts non-flanged Connecting format.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200102043U CN201162837Y (en) | 2008-01-15 | 2008-01-15 | Butterfly valve with hollow butterfly plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200102043U CN201162837Y (en) | 2008-01-15 | 2008-01-15 | Butterfly valve with hollow butterfly plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162837Y true CN201162837Y (en) | 2008-12-10 |
Family
ID=40183774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200102043U Expired - Lifetime CN201162837Y (en) | 2008-01-15 | 2008-01-15 | Butterfly valve with hollow butterfly plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162837Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216118B (en) * | 2008-01-14 | 2012-07-18 | 沈阳恒屹实业有限公司 | Hollow butterfly plate butterfly valve |
| CN106051181A (en) * | 2016-08-18 | 2016-10-26 | 天津鸿瑞橡胶有限公司 | Large butterfly valve body structure |
| CN106090261A (en) * | 2016-08-23 | 2016-11-09 | 成都欧浦特控制阀门有限公司 | A kind of durable butterfly valve assembly of lower resistance |
-
2008
- 2008-01-15 CN CNU2008200102043U patent/CN201162837Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101216118B (en) * | 2008-01-14 | 2012-07-18 | 沈阳恒屹实业有限公司 | Hollow butterfly plate butterfly valve |
| CN106051181A (en) * | 2016-08-18 | 2016-10-26 | 天津鸿瑞橡胶有限公司 | Large butterfly valve body structure |
| CN106090261A (en) * | 2016-08-23 | 2016-11-09 | 成都欧浦特控制阀门有限公司 | A kind of durable butterfly valve assembly of lower resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20081210 Effective date of abandoning: 20080115 |