CN204239847U - pressure balancing stop valve - Google Patents
pressure balancing stop valve Download PDFInfo
- Publication number
- CN204239847U CN204239847U CN201420690369.5U CN201420690369U CN204239847U CN 204239847 U CN204239847 U CN 204239847U CN 201420690369 U CN201420690369 U CN 201420690369U CN 204239847 U CN204239847 U CN 204239847U
- Authority
- CN
- China
- Prior art keywords
- flap
- pad
- stop valve
- pressure balancing
- locking nut
- 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 - Fee Related
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- Sliding Valves (AREA)
Abstract
Pressure balancing stop valve.Mainly solve existing a lot of pressure balanced stop valve, the simple seal ring that adopts seals mostly, the problem that sealing effect is not good.It is characterized in that: described valve body (1) comprises intercommunicating pore (11), Expanded graphite circle (3) is provided with between described intercommunicating pore (11) inwall and flap (2), described Expanded graphite circle (3) is respectively equipped with the first pad (41) and the second pad (42) in two ends up and down, described flap (2) is also provided with locking nut (5) outward, and described locking nut (5) comprises the second place compressing the first pad (41) when declining away from the primary importance of the first pad (41) and flap (2) when flap (2) rises.The utility model provides a kind of pressure balancing stop valve, is provided with Expanded graphite circle between its valve body and flap, and described Expanded graphite circle two ends are provided with pad, flap is equipped with locking nut, locking nut is pressed on pad, this pressure balancing stop valve good seal performance, use safety.
Description
Technical field
The utility model belongs to field of check valves, particularly pressure balancing stop valve.
Background technique
so various fields such as stop valve extensive use oil, chemical industry.Its advantage is: structure is simple, manufactures and keep in repair more convenient.Keying stroke is short, opens and closes the time needed short.Good airproof performance, between sealing surface, friction is little, and the life-span is longer.In opening and closing process, the frictional force of sealing surface is less than gate valve, wear-resisting.Usually only have a sealing surface, manufacturing process is good, is convenient to maintenance.But this valve is when hydrodynamic pressure is large, during opening and closing, required power is larger.For addressing this problem, just there is equilibrated valve.But existing a lot of pressure balanced stop valve, the simple seal ring that adopts seals mostly, and sealing effect is not good.
Model utility content
In order to overcome the deficiency of background technique, the utility model provides pressure balancing stop valve, mainly solves existing a lot of pressure balanced stop valve, and the simple seal ring that adopts seals mostly, and sealing effect is not good.
The technological scheme that the utility model adopts is:
A kind of pressure balancing stop valve, comprise valve body and valve rod, flap is provided with in described valve body, described valve rod lower end is connected with described flap, described valve body comprises intercommunicating pore, is provided with Expanded graphite circle between described intercommunicating pore inwall and flap, and the described upper and lower two ends of Expanded graphite circle are respectively equipped with the first pad and the second pad, described flap is also provided with locking nut outward, and described locking nut comprises the second place compressing the first pad when declining away from the primary importance of the first pad and flap when flap rises.
Described locking nut is 2.
Described valve body is integrally formed with flap bottom adaptive valve seat, form sealing pair between described valve seat and flap opposing side.
On described sealing pair, heap is welded with wear-resistant alloy layer.
Described wear-resistant alloy layer is made up of stellite.
Also be provided with baffle ring in described valve body, described second pad is arranged on described baffle ring.
The beneficial effects of the utility model are: the utility model provides a kind of pressure balancing stop valve, Expanded graphite circle is provided with between its valve body and flap, described Expanded graphite circle two ends are provided with pad, flap is equipped with locking nut, locking nut is pressed on pad, this pressure balancing stop valve good seal performance, use safety.
Accompanying drawing explanation
Fig. 1 is the sectional view of the utility model embodiment.
Fig. 2 is the enlarged view at Figure 1A place.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail: as shown in the figure, a kind of pressure balancing stop valve, comprise valve body 1 and valve rod, flap 2 is provided with in described valve body 1, described valve rod lower end is connected with described flap 2, described valve body 1 comprises intercommunicating pore 11, Expanded graphite circle 3 is provided with between described intercommunicating pore 11 inwall and flap 2, described Expanded graphite circle about 3 two ends are respectively equipped with the first pad 41 and the second pad 42, described flap 2 is outer is also provided with locking nut 5, described locking nut 5 comprises the second place compressing the first pad 41 when declining away from the primary importance of the first pad 41 and flap 2 when flap 2 rises.The utility model provides a kind of pressure balancing stop valve, is provided with Expanded graphite circle between its valve body and flap, and described Expanded graphite circle two ends are provided with pad, flap is equipped with locking nut, locking nut is pressed on pad, this pressure balancing stop valve good seal performance, use safety.
In the utility model, as shown in the figure, described locking nut 5 is 2.Also can choose the number of locking nut herein according to actual needs, 2 is preferred version.
In the utility model, as shown in the figure, described valve body 1 is integrally formed with flap 2 bottom adaptive valve seat 12, form sealing pair 6 between described valve seat 12 and flap 2 opposing side.The valve seat using effect be wholely set is better.
In the utility model, as shown in the figure, on described sealing pair 6, heap is welded with wear-resistant alloy layer.Wear-resisting property is good, adds working life, also can adopt ferrous alloy (corrosion-resistant stainless steel) here; Nickel-base alloy (Ni-Cr alloy, Ni-Cr-Mo alloy, Ni-Cu alloy etc.).
In the utility model, as shown in the figure, described wear-resistant alloy layer is made up of stellite.Stellite (stellite alloys) has high dimensional stability, and very high wear-resisting, anti-corrosion, anti-oxidant and curing capacity, using effect is good.
In the utility model, as shown in the figure, be also provided with baffle ring 13 in described valve body 1, described second pad 42 is arranged on described baffle ring 13.Structure is convenient, and spool can be affiliated on baffle ring through nut by institute, uses convenient.
Embodiment should not be considered as restriction of the present utility model, but any improvement done based on spirit of the present utility model, all should within protection domain of the present utility model.
Claims (6)
1. a pressure balancing stop valve, comprise valve body (1) and valve rod, flap (2) is provided with in described valve body (1), described valve rod lower end is connected with described flap (2), it is characterized in that: described valve body (1) comprises intercommunicating pore (11), Expanded graphite circle (3) is provided with between described intercommunicating pore (11) inwall and flap (2), described Expanded graphite circle (3) is respectively equipped with the first pad (41) and the second pad (42) in two ends up and down, described flap (2) is also provided with locking nut (5) outward, described locking nut (5) comprises the second place compressing the first pad (41) when declining away from the primary importance of the first pad (41) and flap (2) when flap (2) rises.
2. pressure balancing stop valve according to claim 1, is characterized in that: described locking nut (5) is 2.
3. pressure balancing stop valve according to claim 1, is characterized in that: described valve body (1) is integrally formed with the valve seat (12) adaptive with flap (2) bottom, forms sealing pair (6) between described valve seat (12) and flap (2) opposing side.
4. pressure balancing stop valve according to claim 3, is characterized in that: the upper heap of described sealing pair (6) is welded with wear-resistant alloy layer.
5. pressure balancing stop valve according to claim 4, is characterized in that: described wear-resistant alloy layer is made up of stellite.
6., according to the arbitrary described pressure balancing stop valve of claim 1 to 5, it is characterized in that: be also provided with baffle ring (13) in described valve body (1), described second pad (42) is arranged on described baffle ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690369.5U CN204239847U (en) | 2014-11-18 | 2014-11-18 | pressure balancing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690369.5U CN204239847U (en) | 2014-11-18 | 2014-11-18 | pressure balancing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239847U true CN204239847U (en) | 2015-04-01 |
Family
ID=52769345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420690369.5U Expired - Fee Related CN204239847U (en) | 2014-11-18 | 2014-11-18 | pressure balancing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239847U (en) |
-
2014
- 2014-11-18 CN CN201420690369.5U patent/CN204239847U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20171118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |