CN203743473U - Spring reset dual-acting-force parallel gate valve - Google Patents
Spring reset dual-acting-force parallel gate valve Download PDFInfo
- Publication number
- CN203743473U CN203743473U CN201420134438.4U CN201420134438U CN203743473U CN 203743473 U CN203743473 U CN 203743473U CN 201420134438 U CN201420134438 U CN 201420134438U CN 203743473 U CN203743473 U CN 203743473U
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- China
- Prior art keywords
- wedge
- valve
- shaped blocks
- spring
- seal disc
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000009977 dual effect Effects 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
A spring reset dual-acting-force parallel gate valve mainly solves the problem that some parallel gate valves are poor in structural sealing performance, and is characterized in that an air cylinder is connected with the upper side of a valve cover, a reset spring is arranged in the air cylinder and abuts against a piston in the air cylinder, the piston abuts against the top of a valve rod, a wedge-shaped hinge pin is connected with the bottom of the valve rod and sleeved with a wedge-shaped block, and a return spring is arranged between the wedge-shaped block and the wedge-shaped hinge pin. According to the spring reset dual-acting-force parallel gate valve, under the action of the same valve closing acting force, the sealing performance of the valve is further improved, the structure is reasonable, and improvement on the sealing performance under the low-pressure working situation or the initial pressure working situation is particularly remarkable.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of spring reset dual force parallel gate valve.
Background technique
When gate valve is closed, sealing surface can only rely on pressure medium to seal, and the valve seat that only relies on pressure medium that the sealing surface of flashboard is pressed to opposite side ensures the sealing of sealing surface, Here it is automatic-sealed.Most of gate valve is to adopt forced seal, when valve closing, rely on external force by force flashboard to be pressed to valve seat, to ensure the sealing of sealing surface.
Parallel single flashboard valve is the one of single flashboard valve, and parallel because of two sealing surfaces of its flashboard, sealing surface of seat is gained the name perpendicular to pipe centerline.It can not rely on its body to reach forced seal, must adopt soft valve seat fixing or that float.Be applicable to mesolow medium-large caliber, medium is oils, rock gas.
Conventionally this kind of parallel gate valve structure is to small-bore valve, and sealability is needed raising badly.
Model utility content
In order to overcome the deficiency of background technique, the utility model provides a kind of spring reset dual force parallel gate valve, has mainly solved the problem of existing parallel gate valve sealing structure poor-performing.
The technological scheme that the utility model adopts is: a kind of spring reset dual force parallel gate valve, comprise valve gap, valve body, and be positioned at the valve rod of valve gap, described valve body both sides have import and outlet, described valve gap upside is connected with cylinder, in this cylinder, be provided with Returnning spring, the piston in described Returnning spring and this cylinder offsets, and this piston and described valve rod top offset; Described stem bottom is connected with wedge shape bearing pin, and described wedge pin outer shaft sleeve is provided with wedge-shaped blocks, between described wedge-shaped blocks and wedge shape bearing pin, is provided with return spring; In described valve body, be provided with two seal discs, described seal disc is positioned at the both sides of wedge-shaped blocks, and the middle part of sealing dish is provided with the center lug that protrudes from seal disc, described wedge-shaped blocks bottom is provided with through hole, the seal disc Shang center lug of this through hole and both sides is worked in coordination, the opposite side of two seal discs all with this valve body in valve seat offset; Between described wedge-shaped blocks and both sides sealing dish, be respectively equipped with the piece that rises, described piece one side and the seal disc of rising is close to, and another side and wedge-shaped blocks offset, and the side offseting with wedge-shaped blocks is the conical surface.
Described valve body bottom is provided with spacing lug, and the described piece bottom of rising is total sealing device while offseting with spacing lug; The described piece bottom of rising is for supporting bable tops, and described seal disc bottom is positioned on this supporting bable tops.
The beneficial effects of the utility model are: owing to taking technique scheme, this structure is under the effect of same valve closing function power, further improved the sealability of valve, rational in infrastructure, the sealability under low pressure operating mode or under initial pressure operating mode improves particularly evident.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the exploded view at A place in Fig. 1.
In figure 1, valve gap; 2, valve body; 3, valve rod; 4, cylinder; 5, Returnning spring; 6, wedge shape bearing pin; 7, wedge-shaped blocks; 8, return spring; 9, seal disc; 10, center lug; 11, the piece that rises; 12, spacing lug.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1 with Figure 2, a kind of spring reset dual force parallel gate valve, comprise valve gap 1, valve body 2, and be positioned at the valve rod 3 of valve gap 1, described valve body 2 both sides have import and outlet, and described valve gap 1 upside is connected with cylinder 4, in this cylinder 4, is provided with Returnning spring 5, described Returnning spring 5 offsets with the piston in this cylinder 4, and this piston and described valve rod 3 tops offset; Described valve rod 3 bottoms are connected with wedge shape bearing pin 6, and described wedge shape bearing pin 6 is outer is arranged with wedge-shaped blocks 7, between described wedge-shaped blocks 7 and wedge shape bearing pin 6, is provided with return spring 8; In described valve body 2, be provided with two seal discs 9, described seal disc 9 is positioned at the both sides of wedge-shaped blocks 7, and the middle part of sealing dish 9 is provided with the center lug 10 that protrudes from seal disc 9, described wedge-shaped blocks 7 bottoms are provided with through hole, the seal disc 9 Shang center lugs 10 of this through hole and both sides are worked in coordination, the opposite side of two seal discs 9 all with this valve body 2 in valve seat offset; Between described wedge-shaped blocks 7 and both sides sealing dish 9, be respectively equipped with the piece 11 that rises, described piece 11 1 sides and the seal disc 9 of rising is close to, and another side and wedge-shaped blocks 7 offset, and the side offseting with wedge-shaped blocks 7 is the conical surface.
Described valve body 2 bottoms are provided with spacing lug 12, and described rise piece 11 bottoms and spacing lug 12 are total sealing device while offseting; Described piece 11 bottoms of rising are supporting bable tops, and described seal disc 9 bottoms are positioned on this supporting bable tops.
Its working principle: start to reset when source of the gas disconnects spring 5, at spring 5 active force lower valves in closing process, piston is together with valve rod 3 by wedge-shaped blocks 7 depress, and the piece 11 of rising is also descending immediately with seal disc 9, in the time that piece 11 lower planes that rise are encountered valve body 2 bottom spacing lug 12, the piece 11 that rises stops descending, wedge-shaped blocks 7 continues descending, due to wedge-shaped blocks 7 wedge surfaces and the interaction of piece 11 wedge surfaces that rise, seal disc 9 is strutted with valve seat and is combined, wedge-shaped blocks 7 stops descending, and valve is tentatively sealed.Then wedge shape bearing pin 6 continues to turn down with valve rod 3, utilizes the wedge surface of wedge shape bearing pin 6 and the conical surface of seal disc 9 center lugs 10 to interact seal disc 9 is continued to strut, and makes valve reach optimal seal effect.
Due to the wedge surface of wedge shape bearing pin 6 to the force position of seal disc 9 center lugs 10 central point closer to seal disc 9, make seal disc 9 better with the homeostasis of the sealing surface of valve seat, this structure is under the effect of same valve closing function power, further improved the sealability of valve, the sealability under low pressure operating mode or under initial pressure operating mode improves particularly evident.
Every technician's notice: although the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this model utility; the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (2)
1. a spring reset dual force parallel gate valve, comprise valve gap (1), valve body (2), and be positioned at the valve rod (3) of valve gap (1), described valve body (2) both sides have import and outlet, it is characterized in that: described valve gap (1) upside is connected with cylinder (4), in this cylinder (4), be provided with Returnning spring (5), the piston in described Returnning spring (5) and this cylinder (4) offsets, and this piston and described valve rod (3) top offset; Described valve rod (3) bottom is connected with wedge shape bearing pin (6), and described wedge shape bearing pin (6) is outer is arranged with wedge-shaped blocks (7), between described wedge-shaped blocks (7) and wedge shape bearing pin (6), is provided with return spring (8); In described valve body (2), be provided with two seal discs (9), described seal disc (9) is positioned at the both sides of wedge-shaped blocks (7), and the middle part of sealing dish (9) is provided with the center lug (10) that protrudes from seal disc (9), described wedge-shaped blocks (7) bottom is provided with through hole, seal disc (9) the Shang center lug (10) of this through hole and both sides is worked in coordination, the opposite side of two seal discs (9) all with this valve body (2) in valve seat offset; Between described wedge-shaped blocks (7) and both sides sealing dish (9), be respectively equipped with the piece that rises (11), described piece (11) one sides and the seal disc (9) of rising is close to, and another side and wedge-shaped blocks (7) offset, and the side offseting with wedge-shaped blocks (7) is the conical surface.
2. a kind of spring reset dual force parallel gate valve according to claim 1, is characterized in that: described valve body (2) bottom is provided with spacing lug (12), and the described piece that rises (11) bottom is total sealing device while offseting with spacing lug (12); The described piece that rises (11) bottom is supporting bable tops, and described seal disc (9) bottom is positioned on this supporting bable tops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134438.4U CN203743473U (en) | 2014-03-24 | 2014-03-24 | Spring reset dual-acting-force parallel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134438.4U CN203743473U (en) | 2014-03-24 | 2014-03-24 | Spring reset dual-acting-force parallel gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743473U true CN203743473U (en) | 2014-07-30 |
Family
ID=51343274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420134438.4U Expired - Lifetime CN203743473U (en) | 2014-03-24 | 2014-03-24 | Spring reset dual-acting-force parallel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704618A (en) * | 2016-12-26 | 2017-05-24 | 凯喜姆阀门有限公司 | High-performance gate valve |
-
2014
- 2014-03-24 CN CN201420134438.4U patent/CN203743473U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704618A (en) * | 2016-12-26 | 2017-05-24 | 凯喜姆阀门有限公司 | High-performance gate valve |
| CN106704618B (en) * | 2016-12-26 | 2023-02-14 | 凯喜姆阀门有限公司 | High-performance gate 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 |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |