CN205013776U - Nuclear safety level rising -down check valve - Google Patents
Nuclear safety level rising -down check valve Download PDFInfo
- Publication number
- CN205013776U CN205013776U CN201520765521.6U CN201520765521U CN205013776U CN 205013776 U CN205013776 U CN 205013776U CN 201520765521 U CN201520765521 U CN 201520765521U CN 205013776 U CN205013776 U CN 205013776U
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- valve
- valve rod
- spring
- flap
- rod
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Abstract
The utility model provides a nuclear safety level rising -down check valve, which comprises the following components: a valve body, valve clack and valve gap, the fixed valve rod that sets up in valve clack upper end, the cover is equipped with the spring on the valve rod, inside the opening of valve gap has the guiding hole, the valve rod stretches into in the guiding hole, an installation movable plate between the lower terminal surface of spring and valve clack, clearance fit between movable plate and the valve rod, have the external screw thread on its lateral wall, the interior screw -thread fit who sets up on external screw thread and the valve gap, can make it reciprocate for the valve rod when rotating the movable plate, the up end of spring sets up a fixed plate, the fixed plate joint is in the shaft shoulder department of valve rod, and fix on the valve rod through the fastener. The beneficial effects of the utility model are that: through the swivelling movement board for the movable plate reciprocates, thereby changes the decrement of spring, and then the pressure of adjusting valve when opening, makes valve application scope wider, makes things convenient for the customer to use.
Description
Art
The utility model relates to a kind of valve, particularly relates to a kind of Lift check valve.
Background technique
Lift check valve realizes opening and closing by medium differential pressure and flap deadweight, has the function preventing medium from flowing backwards.Existing Lift check valve, during adverse current, the hydrostatic pressure of fluid, on the flap opened, makes flap decline and closes, and flap stops fluid backflow.At present, the flap cracking pressure of Lift check valve is all unadjustable, in the pipeline that some are special, needs, through changing cracking pressure to meet the demands, just to need integral replacing valve, use inconvenience.
Model utility content
In order to overcome the above-mentioned shortcoming of existing Lift check valve, the utility model provide a kind of can the Lift check valve of regulating valve cracking pressure.
The utility model solves the technological scheme that its technical problem adopts, a kind of nuclear safe level Lift check valve, comprise valve body, flap and valve gap, valve gap is fixedly connected with by screw thread with valve body, snout cavity and outlet plenum is provided with in valve body, valve seat is provided with between snout cavity and outlet plenum, flap coordinates with valve base sealing, flap upper end is fixedly installed valve rod, valve rod is set with spring, valve gap inside has pilot hole, valve rod stretches in pilot hole, between the lower end surface and flap of spring, a shifting board is installed, Spielpassung between shifting board and valve rod, with outside thread on its outer side wall, the screw-internal thread fit that outside thread and valve gap are offered, when rotation shifting board can make it move up and down relative to valve rod, the upper-end surface of spring arranges a fixed plate, fixing board card is connected to the shaft shoulder place of valve rod, and be fixed on valve rod by fastening piece.
Shifting board and fixed plate offer through hole.
The beneficial effects of the utility model are: by plate in rotary moving, and shifting board is moved up and down, thus change the decrement of spring, and then pressure when regulating valve is opened, and make valve Applicable scope wider, facilitate client to use; Further on shifting board and fixed plate, offer through hole, making valve more rapid when closing, more effectively preventing the backflow of medium.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. valve gap; 2. nut; 3. fixed plate; 4. through hole A; 5. spring; 6. valve rod; 7. shifting board; 8. through hole B; 9. flap; 10. valve seat; 11. outlet plenums; 12. snout cavities; 13. valve bodies; 14. pilot holes.
Embodiment
As shown in Figure 1, a kind of nuclear safe level Lift check valve, comprise valve body 13, flap 9 and valve gap 1, valve gap 1 is fixedly connected with by screw thread with valve body 13, snout cavity 12 and outlet plenum 11 is provided with in valve body 13, valve seat 10 is provided with between snout cavity 12 and outlet plenum 11, flap 9 and valve seat 10 are sealed and matched, flap 9 upper end is fixedly installed valve rod 6, valve rod 6 is set with spring 5, valve gap 6 inside has pilot hole 14, valve rod 6 stretches in pilot hole 14, one shifting board 7 is installed between the lower end surface of spring 5 and flap 9, Spielpassung between shifting board 7 and valve rod 6, with outside thread on its outer side wall, the screw-internal thread fit that outside thread and valve gap 1 are offered, when rotation shifting board 7 can make it move up and down relative to valve rod 6, the upper-end surface of spring 5 arranges a fixed plate 3, fixed plate 3 is connected in the shaft shoulder place of valve rod 6, and be fixed on valve rod 6 by nut 2, shifting board 7 and fixed plate 3 offer through hole B8 and through hole A4 respectively.
After medium enters from snout cavity 12, to the thrust that flap 9 applies upwards, medium thrust overcomes spring force and flap gravity, thus Open valve, after the decrement of adjustment spring, also namely have adjusted the cracking pressure of valve; When medium counter flow, under the effect of spring force and flap self gravitation moment throttle down, effectively prevent the backflow of medium.
Claims (2)
1. a nuclear safe level Lift check valve, comprise valve body, flap and valve gap, described valve gap is fixedly connected with by screw thread with valve body, snout cavity and outlet plenum is provided with in described valve body, valve seat is provided with between described snout cavity and outlet plenum, described flap coordinates with valve base sealing, described flap upper end is fixedly installed valve rod, described valve rod is set with spring, it is characterized in that: described valve gap inside has pilot hole, described valve rod stretches in pilot hole, between the lower end surface and flap of described spring, a shifting board is installed, Spielpassung between described shifting board and valve rod, with outside thread on its outer side wall, the screw-internal thread fit that described outside thread and valve gap are offered, when the described shifting board of rotation can make it move up and down relative to valve rod, the upper-end surface of described spring arranges a fixed plate, described fixing board card is connected to the shaft shoulder place of described valve rod, and be fixed on valve rod by fastening piece.
2. nuclear safe level Lift check valve as claimed in claim 1, is characterized in that: described shifting board and fixed plate offer through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765521.6U CN205013776U (en) | 2015-09-30 | 2015-09-30 | Nuclear safety level rising -down check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520765521.6U CN205013776U (en) | 2015-09-30 | 2015-09-30 | Nuclear safety level rising -down check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013776U true CN205013776U (en) | 2016-02-03 |
Family
ID=55212380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520765521.6U Active CN205013776U (en) | 2015-09-30 | 2015-09-30 | Nuclear safety level rising -down check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135009A (en) * | 2015-09-30 | 2015-12-09 | 江苏神通阀门股份有限公司 | Nuclear-security-level lift check valve |
-
2015
- 2015-09-30 CN CN201520765521.6U patent/CN205013776U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135009A (en) * | 2015-09-30 | 2015-12-09 | 江苏神通阀门股份有限公司 | Nuclear-security-level lift check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |