CN203784311U - Novel leakage-free valve - Google Patents
Novel leakage-free valve Download PDFInfo
- Publication number
- CN203784311U CN203784311U CN201420032176.0U CN201420032176U CN203784311U CN 203784311 U CN203784311 U CN 203784311U CN 201420032176 U CN201420032176 U CN 201420032176U CN 203784311 U CN203784311 U CN 203784311U
- Authority
- CN
- China
- Prior art keywords
- valve
- oil cylinder
- spool
- gland
- valve seat
- 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
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 11
- 239000010727 cylinder oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a valve and especially relates to a novel leakage-free valve. The novel leakage-free valve comprises a short section, a valve base, a valve body, a valve core, a valve cover and an oil cylinder, wherein the lower end of a piston rod of the oil cylinder is directly connected with the valve core; an oil cylinder flange is fixed with a valve cover flange through a bolt; a padding box and a padding gland on the valve cover are arranged as hidden structures. According to the utility model, two rods are combined into one, namely, an oil cylinder rod is prolonged and is directly fixed with the valve core and a valve rod is removed; the oil cylinder flange is directly fixed with the valve cover flange through the bolt, so that the padding box and the padding gland on the valve cover are hidden; once the padding gland suffers from air leakage, the air cannot leak to the outer side of the valve and also cannot leak into the oil cylinder, because the oil pressure of the oil cylinder is greatly higher than the air pressure in the valve.
Description
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of Leakproof valve.
Background technique
The valve rod of general valve and cylinder rod are to form with link and buffering spring assembly, and stuffing box only has a place on valve gap.Gland is exposed at outside valve gap outward, once filling leakage will spill outside valve.The work that often needs repairing maintenance, because valve is numerous, maintenance workload is huge.
Summary of the invention
In order to overcome above-mentioned defect, the purpose of this utility model is to provide a kind of Leakproof valve, once Gland gas leakage can not spill outside valve yet, more can not drain in oil cylinder.
To achieve these goals, the utility model adopts following technological scheme:
A kind of Leakproof valve, it comprises pipe nipple, valve seat, valve body, spool, valve gap, oil hydraulic cylinder;
The piston-rod lower end of described oil hydraulic cylinder is directly connected with spool, and oil hydraulic cylinder flange plate and bonnet flange dish are bolted together, and the stuffing box on valve gap and Gland are concealed type structure.
In the sealing surface that described spool contacts with valve seat, the outer rim of spool is roundlet edged surface; In the sealing surface that described spool contacts with valve seat, the inner edge of valve seat is the large conical surface.
The beneficial effects of the utility model:
The utility model is that two bars are united two into one, cylinder rod is lengthened and directly fixing and cancellation valve rod of spool, cylinder flange dish directly and bonnet flange dish be bolted together, stuffing box on valve gap and Gland are become to be hidden, once Gland gas leakage can not spill outside valve yet, more can not drain in oil cylinder, because oil cylinder oil pressure is far longer than valve internal air pressure.
On spool and sealing surface of seat, also improve, original structure spool is large sphere, valve seat is roundlet edged surface, sealing effect is poor, full water test is difficult to reach per minute and is less than 60, and new structure changes spool into roundlet edged surface, and valve seat changes big vertebra face into, change rear structure full water test per minute less than 1, more very one does not leak.Greatly increase sealing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1, the utility model is described in detail:
A kind of Leakproof valve, it comprises pipe nipple 1, valve seat 2, valve body 3, spool 4, valve gap 5, oil hydraulic cylinder 6;
Piston rod 11 lower ends of described oil hydraulic cylinder 6 are directly connected with spool 4, and oil hydraulic cylinder flange plate 7 is bolted together with bonnet flange dish 8, and the stuffing box 9 on valve gap 5 and Gland 10 are concealed type structure.
In the sealing surface that described spool 4 contacts with valve seat 2, the outer rim of spool 4 is roundlet edged surface; In the sealing surface that described spool 4 contacts with valve seat 2, the inner edge of valve seat 2 is the large conical surface.
The utility model is that two bars are united two into one, cylinder rod is lengthened and directly fixing and cancellation valve rod of spool, cylinder flange dish directly and bonnet flange dish be bolted together, stuffing box on valve gap and Gland are become to be hidden, once Gland gas leakage can not spill outside valve yet, more can not drain in oil cylinder, because oil cylinder oil pressure is far longer than valve internal air pressure.
Claims (2)
1. a Leakproof valve, is characterized in that: it comprises pipe nipple (1), valve seat (2), valve body (3), spool (4), valve gap (5), oil hydraulic cylinder (6);
Piston rod (11) lower end of described oil hydraulic cylinder (6) is directly connected with spool (4), and oil hydraulic cylinder flange plate (7) is bolted together with bonnet flange dish (8), and stuffing box (9) and Gland (10) on valve gap (5) are concealed type structure.
2. Leakproof valve according to claim 1, is characterized in that: in the sealing surface that described spool (4) contacts with valve seat (2), the outer rim of spool (4) is roundlet edged surface; In the sealing surface that described spool (4) contacts with valve seat (2), the inner edge of valve seat (2) is the large conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032176.0U CN203784311U (en) | 2014-01-20 | 2014-01-20 | Novel leakage-free valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420032176.0U CN203784311U (en) | 2014-01-20 | 2014-01-20 | Novel leakage-free valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784311U true CN203784311U (en) | 2014-08-20 |
Family
ID=51320499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420032176.0U Expired - Fee Related CN203784311U (en) | 2014-01-20 | 2014-01-20 | Novel leakage-free valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784311U (en) |
-
2014
- 2014-01-20 CN CN201420032176.0U patent/CN203784311U/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: 20140820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |