CN204476943U - A kind of high-flow safety valve - Google Patents
A kind of high-flow safety valve Download PDFInfo
- Publication number
- CN204476943U CN204476943U CN201520091498.7U CN201520091498U CN204476943U CN 204476943 U CN204476943 U CN 204476943U CN 201520091498 U CN201520091498 U CN 201520091498U CN 204476943 U CN204476943 U CN 204476943U
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- Prior art keywords
- valve port
- lower valve
- core
- valve core
- port
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of high-flow safety valve, comprise valve seat, spool and spring, water intake and water outlet is provided with in valve seat, be connected by valve port between water intake with water outlet, spool is stuck in valve port, valve port comprises cylindric upper valve port and lower valve port, the diameter of upper valve port is greater than the predetermined value of the diameter one of lower valve port, water intake is communicated with the middle part of lower valve port, spool comprises upper valve core and lower valve core, be connected by columned connecting core between upper valve core with lower valve core, upper valve core is truncated cone shape component and is stuck between water intake and upper valve port, lower valve core is cylindrical member and is positioned at the bottom of lower valve port, the diameter of lower valve core and the equal diameters of lower valve port are also sealed by the sidewall being looped around outer seal ring and lower valve port bottom, spring is connected with the top of upper valve core.The utility model reduces the power that spool is subject to a great extent.The [coefficient of of the spring used in structure of the present utility model is less demanding.
Description
Technical field
The utility model relates to a kind of hydraulic fittings, especially relates to a kind of high-flow safety valve.
Background technique
Existing Direct spring loaded safety valve is all the effect simply adopting the pressure of spring and hydraulic pressure to balance to realize safety valve.When needing to use safety valve in the occasion of high-pressure high-flow, the valve port of safety valve in order to the demand meeting large discharge to arrange enough large.And the pressure that the larger valve port of bore is subject to is also larger, now wants balanced hydraulic pressure then to need spring can be applied to the enough large thrust of spool.Enough large in order to ensure the thrust of spring, then require that the [coefficient of of spring is large.And the manufacture of this spring also exists certain difficulty, and the relative sensitivity of the large spring of [coefficient of is also lower.Therefore, existing Direct spring loaded safety valve is difficult to the job requirement meeting large discharge occasion.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of high-flow safety valve, can solve the problem that spring cannot balance high-volume hydraulic pressure.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of high-flow safety valve, comprise valve seat, spool and spring, water intake and water outlet is provided with in described valve seat, described water intake is connected by valve port with between water outlet, described spool is stuck in valve port, described valve port comprises cylindric upper valve port and lower valve port, the diameter of described upper valve port is greater than the predetermined value of the diameter one of lower valve port, described water intake is communicated with the middle part of lower valve port, described spool comprises upper valve core and lower valve core, described upper valve core is connected by columned connecting core with between lower valve core, described upper valve core is truncated cone shape component and is stuck between water intake and upper valve port, described lower valve core is cylindrical member and is positioned at the bottom of lower valve port, the diameter of described lower valve core and the equal diameters of lower valve port are also sealed by the sidewall being looped around outer seal ring and lower valve port bottom, described spring is connected with the top of upper valve core.
Described water intake is connected with described lower valve core is vertical.
The diameter of described connecting core is less than the diameter of described lower valve core.The less guarantee of diameter of connecting core enters the amount of the fluid of valve port.
The outer surface of described lower valve core is provided with a circle groove, described seal ring is fixed in groove, on the inner side surface that described seal ring is attached to lower valve port and extrusion-deformation.When fluid passes through, ensure the sealing of lower valve core and lower valve port.
Compared with prior art, the utility model has the advantage of that water intake is connected with the middle part of lower valve port, fluid can flow to both direction after water intake enters into valve port.And lower valve core is sealed in the bottom of lower valve port, fluid can be applied to the downward pressure of one, the upper plane of lower valve core.Meanwhile, the lower plane being sealed in the upper valve core of valve port also can be subject to one that fluid applies and upward pressure.The area of upper lower valve port is different, and the basal area of upper valve core is also different from the basal area of lower valve core.The pressure that now spool is subject to is the pressure being multiplied by fluid after the area of the cross section of upper valve port deducts the area of lower valve port cross section again, and this reduces the power that spool is subject to a great extent.The hardness requirement of the spring used in structure of the present utility model is not high, and uses softer spring to contribute to the sensitivity of the switch improving safety valve yet.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1: a kind of high-flow safety valve, comprise valve seat 1, spool 2 and spring 3, water intake 4 and water outlet 5 is provided with in valve seat 1, be connected by valve port between water intake 4 with water outlet 5, spool 2 is stuck in valve port, valve port comprises cylindric upper valve port 6 and lower valve port 7, the diameter of upper valve port 6 is greater than the predetermined value of the diameter one of lower valve port 7, water intake 4 is communicated with the middle part of lower valve port 7, spool 2 comprises upper valve core 21 and lower valve core 22, be connected by columned connecting core 23 between upper valve core 21 with lower valve core 22, upper valve core 21 is truncated cone shape component and is stuck between water intake 4 and upper valve port 6, lower valve core 22 is cylindrical member and is positioned at the bottom of lower valve port 7, the diameter of lower valve core 22 and the equal diameters of lower valve port 7 also seal with the sidewall of lower valve port 7 bottom by being looped around outer seal ring 8, spring 3 is connected with the top of upper valve core 21.
Water intake 4 is connected with lower valve core 22 is vertical.The diameter of connecting core 23 is less than the diameter of lower valve core 22.The outer surface of lower valve core 22 is provided with a circle groove, seal ring 8 is fixed in groove, on the inner side surface that seal ring 8 is attached to lower valve port 7 and extrusion-deformation.
Claims (4)
1. a high-flow safety valve, comprise valve seat, spool and spring, water intake and water outlet is provided with in described valve seat, described water intake is connected by valve port with between water outlet, described spool is stuck in valve port, it is characterized in that described valve port comprises cylindric upper valve port and lower valve port, the diameter of described upper valve port is greater than the predetermined value of the diameter one of lower valve port, described water intake is communicated with the middle part of lower valve port, described spool comprises upper valve core and lower valve core, described upper valve core is connected by columned connecting core with between lower valve core, described upper valve core is truncated cone shape component and is stuck between water intake and upper valve port, described lower valve core is cylindrical member and is positioned at the bottom of lower valve port, the diameter of described lower valve core and the equal diameters of lower valve port are also sealed by the sidewall being looped around outer seal ring and lower valve port bottom, described spring is connected with the top of upper valve core.
2. a kind of high-flow safety valve according to claim 1, is characterized in that described water intake is connected with described lower valve core is vertical.
3. a kind of high-flow safety valve according to claim 2, is characterized in that the diameter of described connecting core is less than the diameter of described lower valve core.
4. a kind of high-flow safety valve according to claim 1, the outer surface that it is characterized in that described lower valve core is provided with a circle groove, and described seal ring is fixed in groove, on the inner side surface that described seal ring is attached to lower valve port and extrusion-deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520091498.7U CN204476943U (en) | 2015-02-06 | 2015-02-06 | A kind of high-flow safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520091498.7U CN204476943U (en) | 2015-02-06 | 2015-02-06 | A kind of high-flow safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476943U true CN204476943U (en) | 2015-07-15 |
Family
ID=53632734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520091498.7U Expired - Fee Related CN204476943U (en) | 2015-02-06 | 2015-02-06 | A kind of high-flow safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204476943U (en) |
-
2015
- 2015-02-06 CN CN201520091498.7U patent/CN204476943U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20210206 |