CN210034452U - Lower valve rod anti-liquid loading device and triple eccentric butterfly valve comprising same - Google Patents
Lower valve rod anti-liquid loading device and triple eccentric butterfly valve comprising same Download PDFInfo
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- CN210034452U CN210034452U CN201920849878.0U CN201920849878U CN210034452U CN 210034452 U CN210034452 U CN 210034452U CN 201920849878 U CN201920849878 U CN 201920849878U CN 210034452 U CN210034452 U CN 210034452U
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- valve rod
- lower valve
- column part
- valve body
- gland
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Abstract
The utility model discloses a hydrops device is prevented to lower valve rod and three eccentric butterfly valve that contain it, the hydrops device is prevented to lower valve rod includes valve body, lower valve rod, butterfly plate and slide bearing, the bottom fixed connection of lower valve rod in the valve body, the top of lower valve rod is rotationally inlayed and is located in the butterfly plate, slide bearing sleeve locates lower valve rod is located the valve body with between the lower valve rod. The triple offset butterfly valve comprises the lower valve rod liquid accumulation prevention device. Set up the slide bearing at the top of lower valve rod and lie in between valve body and the lower valve rod, prevented that liquid and impurity from depositing in the slide bearing, effectively avoided the butterfly plate bad or the card condition of dying that appear when rotating, improved the stability of three eccentric butterfly valves greatly.
Description
Technical Field
The utility model relates to a hydrops device and contain its three eccentric butterfly valves are prevented to lower valve rod.
Background
The triple eccentric butterfly valve is widely applied to the industries of petroleum, chemical engineering, electric power and the like. At present, the top of the lower valve rod of three eccentric butterfly valves is fixed on the butterfly plate, and the bottom of lower valve rod is rotationally connected in the valve body through the revolute pair for the lower valve rod structure of three eccentric butterfly valves easily has medium liquid and can amass in the revolute pair, if persist the hydrops in the revolute pair, can have the influence to the rotation of lower valve rod, can cause the bad or card dead condition of rotation even.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the above-mentioned not enough of current existence, the utility model provides a hydrops device is prevented to lower valve rod and contains its three eccentric butterfly valves.
The utility model discloses a realize through following technical scheme:
the utility model provides a hydrops device is prevented to lower valve rod, its includes valve body, lower valve rod, butterfly plate and slide bearing, the bottom fixed connection of lower valve rod in the valve body, the top of lower valve rod rotationally inlays to be located in the butterfly plate, the slide bearing cover is located lower valve rod is located the valve body with between the lower valve rod.
Further, the lower valve rod comprises an upper column portion and a middle column portion, the top of the middle column portion is connected to the bottom of the upper column portion, the valve body is provided with a shaft hole, the middle column portion penetrates through the shaft hole, a cylindrical cavity is formed in the bottom of the butterfly plate, the upper column portion is embedded in the cylindrical cavity, and the diameter of the middle column portion is larger than that of the upper column portion.
Further, the lower valve rod further comprises a protruding portion connected to the top of the upper column portion.
Further, the top surface of the bulge is arc-shaped.
Further, the lower valve rod further comprises a lower column part, the lower column part is connected to the bottom of the middle column part, the diameter of the lower column part is larger than that of the middle column part, a concave table is arranged at the bottom of the shaft hole, and the lower column part is inserted into the concave table.
Further, the axis of the shaft hole is on the same straight line with the axis of the cylindrical cavity.
Further, the lower valve rod effusion prevention device further comprises a sealing gasket and a gland, the gland is connected to the bottom of the valve body, and the sealing gasket is arranged between the valve body and the gland in a pressing mode.
Further, the gland passes through bolted connection in the bottom of valve body, just the gland with there is the clearance between the valve body.
A triple offset butterfly valve includes a lower valve stem anti-liquid accumulation device as described above.
The beneficial effects of the utility model reside in that: set up the slide bearing at the top of lower valve rod and lie in between valve body and the lower valve rod, prevented that liquid and impurity from depositing in the slide bearing, effectively avoided the butterfly plate bad or the card condition of dying that appear when rotating, improved the stability of three eccentric butterfly valves greatly.
Drawings
Fig. 1 is the utility model discloses the inner structure schematic diagram of hydrops device is prevented to three eccentric butterfly valve's lower valve rod.
Fig. 2 is the utility model discloses the structure schematic diagram of the lower valve rod of hydrops device is prevented to the lower valve rod of three eccentric butterfly valves.
Description of reference numerals:
lower valve rod 1
Convex part 11
Valve body 2
Shaft hole 21
Plain bearing 4
Sealing gasket 5
Gland 6
Bolt 7
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
As shown in fig. 1 and 2, the present embodiment discloses a triple offset butterfly valve including a lower stem liquid accumulation prevention device. This hydrops device is prevented to lower valve rod includes lower valve rod 1, valve body 2, butterfly plate 3 and slide bearing 4, and lower valve rod 1's bottom fixed connection is in valve body 2, and lower valve rod 1's top rotationally inlays and locates in butterfly plate 3, and slide bearing 4 covers locates lower valve rod 1 and is located between valve body 2 and the lower valve rod 1. Lower valve rod 1's bottom fixed connection is on valve body 2 for lower valve rod 1 can not rotate, slide bearing 4 sets up in butterfly plate 3 and the top of valve rod 1 is established to the cover, set up slide bearing 4 at lower valve rod 1's top and lie in valve body 2 and lower between the valve rod 1, liquid that stores up in slide bearing 4, impurity will drop, prevented that liquid and impurity from storing up in slide bearing 4, the bad or card condition of dying of butterfly plate 3 appearance when rotating has effectively been avoided, the stability of three eccentric butterfly valves has been improved greatly.
The lower valve rod 1 comprises an upper column part 12 and a middle column part 13, the top of the middle column part 13 is connected to the bottom of the upper column part 12, the valve body 2 is provided with a shaft hole 21, the middle column part 13 penetrates through the shaft hole 21, the bottom of the butterfly plate 3 is provided with a cylindrical cavity 31, the upper column part 12 is embedded in the cylindrical cavity 31, and the diameter of the middle column part 13 is larger than that of the upper column part 12. Lower valve rod 1 inlays through last column portion 12 and locates in butterfly plate 3 and slide bearing 4, and lower valve rod 1 is connected in the bottom of valve body 2 through well column portion 13, and well column portion 13 and the shape of last column portion 12 are the cylinder, and the diameter through well column portion 13 is greater than the diameter of last column portion 12, passes upper column portion 12 and well column portion 13 shaft hole 21 in proper order, and goes up in column portion 12 inserts to slide bearing 4, has just realized the equipment of lower valve rod anti-hydrops device, and the erection joint is very convenient.
Lower stem 1 further includes a boss 11, boss 11 being attached to the top of upper post 12. The lower valve rod 1 can not rotate, the butterfly plate 3 can rotate, and the lower valve rod 1 and the butterfly plate 3 are connected through a sliding bearing 4. The boss 11 will lean on at the bottom of leaning on the chamber in the cylinder chamber 31, has effectively reduced the support between lower valve rod 1 and the butterfly plate 3 and has leaned on area of contact, and butterfly plate 3 reduces the frictional force between lower valve rod 1 and the butterfly plate 3 when rotatory, has effectively avoided the phenomenon such as the rotation harmfully to appear in the three eccentric butterfly valves. The top surface of the protruding part 11 is arc-shaped, the contact area is the smallest, and the rotation of the butterfly plate 3 is facilitated.
The lower valve rod 1 further comprises a lower column part 14, the lower column part 14 is connected to the bottom of the middle column part 13, the diameter of the lower column part 14 is larger than that of the middle column part 13, a concave platform 22 is arranged at the bottom of the shaft hole 21, and the lower column part 14 is inserted into the concave platform 22. The lower column part 14 is inserted and abutted against the inner wall surface of the concave table 22, the lower column part 14 and the concave table 22 are matched to play a limiting role, the lower valve rod 1 is accurately installed on the butterfly plate 3 and the valve body 2, and the installation precision of the lower valve rod liquid accumulation prevention device is greatly improved. The lower column portion 14 may be cylindrical in shape, and the recessed platform 22 may be a recessed ring in shape.
The axis of the shaft hole 21 is collinear with the axis of the cylindrical cavity 31. The boss 11, the upper column part 12 and the middle column part 13 sequentially pass through the shaft hole 21, and finally the lower column part 14 abuts against the concave platform 22, and the boss 11 is ensured to accurately abut against the bottom of the cylindrical cavity 31, and the upper column part 12 is inserted into the cylindrical cavity 31.
The lower valve rod effusion prevention device further comprises a sealing gasket 5 and a gland 6, the gland 6 is connected to the bottom of the valve body 2, and the sealing gasket 5 is pressed between the valve body 2 and the gland 6. After the lower valve rod 1 is inserted into the shaft hole 21, the sealing gasket 5 is placed below the lower valve rod 1 and is connected to the valve body 2 through the gland 6, so that the sealing gasket 5 is pressed between the valve body 2 and the gland 6, and the installation is very convenient; meanwhile, the sealing performance of the lower valve rod liquid accumulation prevention device is greatly improved, and the stability of the three-eccentric center butterfly valve is improved.
The gland 6 is connected to the bottom of the valve body 2 through a bolt 7, and the installation and the disassembly are very convenient through the bolt 7. The number of the bolts 7 can be multiple, so that the connection strength between the valve body 2 and the gland 6 is enhanced, and the sealing performance is improved. There is the clearance between gland 6 and the valve body 2 for seal gasket 5 is compressed tightly and is leaned on between valve body 2 and gland 6, has further guaranteed the leakproofness of three eccentric butterfly valves.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. The utility model provides a hydrops device is prevented to lower valve rod, its characterized in that, it includes valve body, lower valve rod, butterfly plate and slide bearing, the bottom fixed connection of lower valve rod in the valve body, the top of lower valve rod rotationally inlays to be located in the butterfly plate, the slide bearing cover is located lower valve rod is located the valve body with between the lower valve rod.
2. The lower valve rod liquid accumulation prevention device as defined in claim 1, wherein the lower valve rod comprises an upper column part and a middle column part, the top of the middle column part is connected to the bottom of the upper column part, the valve body is provided with a shaft hole, the middle column part is arranged through the shaft hole, the bottom of the butterfly plate is provided with a cylindrical cavity, the upper column part is embedded in the cylindrical cavity, and the diameter of the middle column part is larger than that of the upper column part.
3. The lower stem anti-pooling device of claim 2 wherein said lower stem further comprises a boss connected to a top of said upper column portion.
4. The lower valve stem liquid accumulation prevention device of claim 3 wherein the top surface of the projection is rounded.
5. The lower valve stem liquid accumulation prevention device as defined in claim 2, wherein the lower valve stem further comprises a lower column part connected to the bottom of the middle column part, the lower column part having a diameter larger than that of the middle column part, the bottom of the shaft hole being provided with a recessed platform, the lower column part being inserted into the recessed platform.
6. The lower stem anti-pooling device of claim 2 wherein an axis of said axial bore is collinear with an axis of said cylindrical chamber.
7. The lower valve stem liquid accumulation prevention device as claimed in claim 1, wherein the lower valve stem liquid accumulation prevention device further comprises a sealing gasket and a gland, the gland is connected to the bottom of the valve body, and the sealing gasket is pressed between the valve body and the gland.
8. The lower stem liquid accumulation prevention device as claimed in claim 7, wherein the gland is connected to the bottom of the valve body by a bolt, and a gap is formed between the gland and the valve body.
9. A triple offset butterfly valve comprising a lower stem liquid trap apparatus according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920849878.0U CN210034452U (en) | 2019-06-05 | 2019-06-05 | Lower valve rod anti-liquid loading device and triple eccentric butterfly valve comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920849878.0U CN210034452U (en) | 2019-06-05 | 2019-06-05 | Lower valve rod anti-liquid loading device and triple eccentric butterfly valve comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034452U true CN210034452U (en) | 2020-02-07 |
Family
ID=69346912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920849878.0U Active CN210034452U (en) | 2019-06-05 | 2019-06-05 | Lower valve rod anti-liquid loading device and triple eccentric butterfly valve comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034452U (en) |
-
2019
- 2019-06-05 CN CN201920849878.0U patent/CN210034452U/en active Active
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