CN205013700U - Nuclear safety level stop valve - Google Patents
Nuclear safety level stop valve Download PDFInfo
- Publication number
- CN205013700U CN205013700U CN201520769301.0U CN201520769301U CN205013700U CN 205013700 U CN205013700 U CN 205013700U CN 201520769301 U CN201520769301 U CN 201520769301U CN 205013700 U CN205013700 U CN 205013700U
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- Prior art keywords
- valve rod
- valve
- annular boss
- handle
- bearing
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Abstract
The utility model provides an inside wall with that nuclear safety level stop valve, valve rod connect a handle topmost, are provided with the bearing housing of hollow " T " shape between handle and the valve rod, are equipped with annular boss on the inside wall of handle, annular boss bearing housing clearance fit, the cover is equipped with two flat housing on the bearing housing, and wherein flat housing A sets up between the lower surface and bearing housing of annular boss, and flat housing B sets up on the upper surface of annular boss, the inner circle cross -section of the top connection of bellows subassembly is the hexagon, and the outer lane cross -section with the corresponding section of top connection on the valve rod is the hexagon to with the inner circle clearance fit of top connection, the outer lane cross -section is greater than the stroke length that the valve rod was opened and close for hexagonal length on the valve rod. The beneficial effects of the utility model are that: can realize dually preventing changeing, it is better to prevent changeing the effect, and life is longer, and can effectively guarantee the leakproofness of valve.
Description
Art
The utility model relates to a kind of valve, particularly relates to a kind of stop valve.
Background technique
Current stop valve uses corrugated tube sealing structure at valve rod place, require that valve rod can only straight line motion, can not be rotated, because bellows component is once namely distortion can damage, destroy the sealability of valve, and in prior art, valve rod anti-rotation adopts the limiting stopper of external to realize, complex structure, and anti-rotation poor effect after long-term use, be difficult to ensure that valve rod does not rotate, thus the sealability at bellows place can not be ensured, affect the working life of valve.
Model utility content
In order to overcome the above-mentioned shortcoming of existing stop valve, the utility model provides one to have dual anti-rotation effect, and the nuclear safe level stop valve that sealability is better.
The utility model solves the technological scheme that its technical problem adopts, a kind of nuclear safe level stop valve, comprise valve rod, valve rod stretches in valve body, the end of valve rod is provided with flap, valve body is provided with medium and imports and exports passage, valve rod is set with bellows component, bellows is compressed by valve gap, valve gap is fixedly connected with valve body by gland nut again, described valve rod also connects one handle topmost, be threaded connection between handle and valve gap, the inverse-T-shaped bearing housing of hollow is provided with between handle and valve rod, the madial wall of handle is provided with annular boss, the madial wall of annular boss and described bearing housing Spielpassung, bearing housing is set with two plane bearings, wherein plane bearing A is arranged between the lower surface of annular boss and bearing housing, plane bearing B is arranged on the upper surface of annular boss, the top of plane bearing B is provided with bearing cap, bearing cap to be sleeved on valve rod and by the internal thread of nut to coordinate with the outside thread of valve stem end carry out fastening.
Bellows component comprises upper connection, lower contact and bellows, the interior ring cross-section of described upper connection is Hexagon, on valve rod, the outer ring cross-section of corresponding with upper connection section is Hexagon, and with the inner ring Spielpassung of upper connection, the upper outside ring cross-section of valve rod is the running length that hexagonal length is greater than valve rod and opens and closes.
Plane bearing A and be provided with pad between plane bearing B and the annular boss of handle.
The beneficial effects of the utility model are:
(1) when the downward moving linearly of handle rotating band ovable valve stem, handle annular boss has downward pressure to plane bearing A, therefore the ball in plane bearing A during rotatable handle, can be driven to rotate together, thus ensure not exist between bearing housing and handle to relatively rotate, also namely prevent the rotation of valve rod; In like manner, when handle strip ovable valve stem upwards moving linearly time, handle annular boss upwards pressure to plane bearing B, therefore the ball in plane bearing B during rotatable handle, can be driven to rotate together, thus ensure not exist between bearing housing and handle to relatively rotate, also namely preventing the rotation of valve rod, is first rotation prevention structure.
(2) the interior ring cross-section of upper connection and the outer ring cross-section of valve rod are all hexagonal structure, and can effectively prevent valve rod relative to the rotation of bellows, this is second rotation prevention structure.
(3) plane bearing A and be provided with pad between plane bearing B and the annular boss of handle, can avoid the friction between handle and plane bearing, extend working life.
Accompanying drawing explanation
Fig. 1 is the new structural representation of this practicality;
Fig. 2 is A-A sectional view in Fig. 1.
In figure: 1. nut; 2. bearing cap; 3. plane bearing B; 4. pad; 5. plane bearing A; 6. bearing housing; 7. handle; 8. valve gap; 9. gland nut; 10. bellows component; 101. upper connection; 102. bellows; 103. lower contact; 11. valve bodies; 12. valve rods; Annular boss.
Embodiment
As Fig. 1, shown in 2, a kind of nuclear safe level stop valve, comprise valve rod 12, valve rod 12 stretches in valve body 11, the end of valve rod is provided with flap, valve body is provided with medium and imports and exports passage, valve rod 12 is set with bellows component 10, bellows component 10 is compressed by valve gap 8, valve gap 8 is fixedly connected with valve body 11 by gland nut 9 again, described valve rod 12 also connects one handle 7 topmost, be threaded connection between handle 7 and valve gap 8, the inverse-T-shaped bearing housing 6 of hollow is provided with between handle 7 and valve rod 12, the madial wall of handle 7 is provided with annular boss 13, the madial wall of annular boss 13 and described bearing housing 6 Spielpassung, bearing housing 6 is set with two plane bearings, wherein plane bearing A5 is arranged between the lower surface of annular boss 13 and bearing housing 6, plane bearing B3 is arranged on the upper surface of annular boss 13, pad is provided with between the annular boss 13 of plane bearing A5 and plane bearing B3 and handle, the top of plane bearing B3 is provided with bearing cap 2, bearing cap 2 to be sleeved on valve rod 12 and by the internal thread of nut 1 to coordinate with the outside thread of valve rod 12 end carry out fastening.
Bellows component comprises upper connection 101, lower contact 103 and bellows 102, the interior ring cross-section of described upper connection 101 is Hexagon, on valve rod 12, the outer ring cross-section of corresponding with upper connection 101 section is Hexagon, and with the inner ring Spielpassung of upper connection, such structure, can rotate by effectively preventing valve rod, be second rotation prevention structure; The upper outside ring cross-section of valve rod 12 is the running length that hexagonal length is greater than valve rod 12 keying, thus can ensure that valve rod is not interfered in opening-closing process, can complete whole working procedure.
Claims (3)
1. a nuclear safe level stop valve, comprise valve rod, valve rod stretches in valve body, the end of valve rod is provided with flap, valve body is provided with medium and imports and exports passage, valve rod is set with bellows component, bellows component is compressed by valve gap, valve gap is fixedly connected with valve body by gland nut again, described valve rod also connects one handle topmost, be threaded connection between described handle and valve gap, it is characterized in that: the inverse-T-shaped bearing housing being provided with hollow between described handle and valve rod, the madial wall of described handle is provided with annular boss, the madial wall of described annular boss and described bearing housing Spielpassung, described bearing housing is set with two plane bearings, wherein plane bearing A is arranged between the lower surface of annular boss and bearing housing, plane bearing B is arranged on the upper surface of annular boss, the top of described plane bearing B is provided with bearing cap, bearing cap to be sleeved on valve rod and by the internal thread of nut to coordinate with the outside thread of valve stem end carry out fastening.
2. nuclear safe level stop valve as claimed in claim 1, it is characterized in that: described bellows component comprises upper connection, lower contact and bellows, the interior ring cross-section of described upper connection is Hexagon, on described valve rod, the outer ring cross-section of corresponding with upper connection section is Hexagon, and with the inner ring Spielpassung of upper connection, the upper outside ring cross-section of described valve rod is the running length that hexagonal length is greater than valve rod and opens and closes.
3. nuclear safe level stop valve as claimed in claim 1, is characterized in that: be provided with pad between the annular boss of described plane bearing A and plane bearing B and described handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769301.0U CN205013700U (en) | 2015-10-08 | 2015-10-08 | Nuclear safety level stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769301.0U CN205013700U (en) | 2015-10-08 | 2015-10-08 | Nuclear safety level stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013700U true CN205013700U (en) | 2016-02-03 |
Family
ID=55212304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520769301.0U Active CN205013700U (en) | 2015-10-08 | 2015-10-08 | Nuclear safety level stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156692A (en) * | 2015-10-08 | 2015-12-16 | 江苏神通阀门股份有限公司 | Nuclear safety stop valve |
-
2015
- 2015-10-08 CN CN201520769301.0U patent/CN205013700U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156692A (en) * | 2015-10-08 | 2015-12-16 | 江苏神通阀门股份有限公司 | Nuclear safety stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |