CN202646234U - Hydraulic current-limiting safe explosion-proof valve - Google Patents
Hydraulic current-limiting safe explosion-proof valve Download PDFInfo
- Publication number
- CN202646234U CN202646234U CN 201120522015 CN201120522015U CN202646234U CN 202646234 U CN202646234 U CN 202646234U CN 201120522015 CN201120522015 CN 201120522015 CN 201120522015 U CN201120522015 U CN 201120522015U CN 202646234 U CN202646234 U CN 202646234U
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- China
- Prior art keywords
- valve
- cylindrical shell
- valve seat
- piston
- valve body
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Abstract
The utility model relates to a hydraulic current-limiting safe explosion-proof valve which comprises a cylinder body, a spring, a piston valve core, a valve body, a valve seat, a first O-shaped loop, and a second O-shaped loop, wherein the piston valve core is arranged inside the cylinder body, the spring is sleeved on the piston valve core, the cylinder body is threadedly connectedly with the valve body, the first O-shaped loop is arranged between the cylinder body and the valve body, the valve body is threadedly connected with the valve seat, the second O-shaped loop is arranged between the valve body and the valve seat, the central shaft of the valve seat is perpendicular to the central shaft N of the cylinder body, and therefore an L-shaped structure is formed by matching the valve seat with the cylinder body. Because the L-shaped structure is formed by matching the valve seat with the cylinder body, the hydraulic current-limiting safe explosion-proof valve is advantaged by convenience of assembly, simple structure after assembly, direct installation at a hydraulic cylinder connection port, complete isolation of the oil pipe, and utilization safety and reliability.
Description
Technical field
The utility model relates to hydraulic system, relates in particular to the hydraulic flow-limiting safety explosion-proof valve of a kind of use in hydraulic system.
Background technique
At present; in the domestic normally used high-lift operation hydraulic elevating platform current limliting safety explosion-proof valve is not installed usually; and only adopt bidirectional electromagnetic valve or use one-way valve to carry out hydraulic control; its shortcoming is: when adopting bidirectional electromagnetic valve or one-way valve; as run into hydraulic elevating platform hydraulic oil pipe cracking in the rise process; then owing to have long oil pipe line between control valve and the oil hydraulic cylinder; it is easy to mechanical wear or wears out and explosion; this moment, control valve did not have the safety protection effect; cause easily lift platform to descend rapidly, cause potential safety hazard.
The model utility content
In view of this, provide a kind of simple in structure, use safety, the convenient hydraulic flow-limiting safety explosion-proof valve of installing.
A kind of hydraulic flow-limiting safety explosion-proof valve comprises cylindrical shell, spring, piston valve core, valve body, valve seat, the one O type circle, and the 2nd O type circle, this piston valve core is arranged in this cylindrical shell, this spring housing is located on this piston valve core, pass through scyewed joint between this cylindrical shell and this valve body, and an O type circle is arranged between this cylindrical shell and this valve body, pass through scyewed joint between this valve body and this valve seat, and the 2nd O type circle is arranged between this valve body and this valve seat, the central shaft of this valve seat forms L shaped structure perpendicular to the central shaft N of this cylindrical shell so that this valve seat matches with cylindrical shell.
Further, this cylindrical shell and this valve seat are respectively hollow cylindrical.
Further, the outer peripheral surface of this cylindrical shell and this valve seat is respectively arranged with screw thread.
Further, offer a safety valve oil inlet hole in this cylindrical shell, offer a piston valve core oil inlet hole and a piston valve core metering hole in the piston valve core, offer a valve body turnover oilhole and a valve body main oil-hole in this valve body, offer a valve seat turnover oilhole in this valve seat.
Further, this piston valve core oil inlet hole is opened in the end of this piston valve core, and this metering hole is opened in the inner peripheral surface of this piston valve core.
With respect to prior art, described current limliting safety explosion-proof valve adopts spring to add piston structure, and spool and cylindrical shell quality of fit are high, and sealing is better.In addition, because the central shaft of valve seat is perpendicular to the central shaft of this cylindrical shell, so that matching with cylindrical shell, valve seat forms L shaped structure, thereby be convenient to assembling, and simple in structure after the assembling, can be directly installed on the oil hydraulic cylinder jointing, so that oil pipe is kept apart fully, thereby so that safety explosion-proof valve has safe and reliable advantage in use.
Description of drawings
Fig. 1 is the structural representation of the current limliting safety explosion-proof valve that provides of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, so that the utility model specific embodiment is elaborated.
As shown in Figure 1, the utility model embodiment provides a kind of hydraulic flow-limiting safety explosion-proof valve 100, this hydraulic flow-limiting safety explosion-proof valve 100 comprises a cylindrical shell 1, a spring 2, a piston valve core 3, a valve body 4, an O type circle 5, a valve seat 6 and the 2nd an O type circle 7, wherein, this valve body 4 is connected between this cylindrical shell 1 and this valve seat 6, and this spring 2 is set on this piston valve core 3.
In the present embodiment, pass through scyewed joint between this cylindrical shell 1 and this valve body 4, the one O type circle 5 is arranged between this cylindrical shell 1 and this valve body 4 and seals, similar, by scyewed joint, the 2nd O type circle 7 is arranged between this valve body 4 and this valve seat 6 and seals between this valve body 4 and this valve seat 6.
This cylindrical shell 1 roughly is hollow cylindrical, and this spring 2 is installed in this cylindrical shell 1 with this piston valve core 3.
In the present embodiment, this valve seat 6 roughly is hollow cylindrical, and the central shaft M of this valve seat 6 forms L shaped structure approximately perpendicular to the central shaft N of this cylindrical shell 1 so that valve seat 6 matches with cylindrical shell 1.In addition, in the present embodiment, this cylindrical shell 1 is respectively arranged with screw thread 1A, 6A with the outer peripheral surface of this valve seat 6, during use, this hydraulic flow-limiting safety explosion-proof valve can be installed in the hydraulic system, particularly, can connect with oil hydraulic cylinder (not shown) and oil pipe (not shown) in the hydraulic system respectively by screw thread 1A, 6A, so that installation process is very simple and convenient.
As shown in Figure 1, offer a safety valve oil inlet hole 8 in this cylindrical shell 1, offer a piston valve core oil inlet hole 9 and a piston valve core metering hole 10 in the piston valve core 3.Particularly, this piston valve core oil inlet hole 9 is opened in the end of this piston valve core 3, and this metering hole 10 is opened on these piston valve core 3 inner peripheral surfaces.In addition, offer a valve body turnover oilhole 11 and a valve body main oil-hole 12 in this valve body 4, offer a valve seat turnover oilhole 13 in this valve seat 6.
In the present embodiment, described cylindrical shell 1, spring 2, piston valve core 3, valve body 4 and valve seat 6 all adopt the SUS304 stainless steel to make.
The working principle of current limliting safety hydraulic valve 100 described in the utility model is: the high pressure liquid force feed enters oilhole 8 by A end (being that cylindrical shell 1 is away from the end of valve body 4) through cylindrical shell 1, and the oilhole 9 of further offering by piston valve core 3 inner peripheral surfaces enters piston valve core 3, the oilhole 11 of offering on valve body 4 inner peripheral surfaces again enters in the valve body 4, and then enter valve seat 6 through valve body main oil-hole 12, enter oil cylinder finally by valve seat turnover oilhole 13 from B end (being that valve seat 6 is away from the end of valve body 4), this moment, oil cylinder moved with normal speed.On the contrary, entered the turnover oilhole 13 of valve seat 6 by the B end when oil cylinder inner high voltage hydraulic oil, again through the main oil-hole 12 of valve body 4 and when oilhole 11 enters cylindrical shell 1 all around, its compression piston spool 3, so that the oil inlet hole 9 of piston valve core 3 is closed, this moment, hydraulic pressure was in piston valve core metering hole 10 enters cylindrical shell 1, and slowly discharged the A end through cylindrical shell turnover oilhole 8.
Described current limliting safety explosion-proof valve 100 adopts spring to add piston structure, and spool 3 is high with cylindrical shell 1 quality of fit, and sealing is better.In addition, because the central shaft M of valve seat 6 is perpendicular to the central shaft of cylindrical shell 1, so that matching with cylindrical shell 1, valve seat 6 forms L shaped structure, thereby be convenient to assembling, and simple in structure after the assembling, can be directly installed on the oil hydraulic cylinder jointing, so that oil pipe is kept apart fully, thereby so that safety explosion-proof valve 100 has safe and reliable advantage in use.
Below only be preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. hydraulic flow-limiting safety explosion-proof valve, it comprises cylindrical shell, spring, piston valve core, valve body, valve seat, the one O type circle, and the 2nd O type circle, it is characterized in that, this piston valve core is arranged in this cylindrical shell, this spring housing is located on this piston valve core, pass through scyewed joint between this cylindrical shell and this valve body, and an O type circle is arranged between this cylindrical shell and this valve body, pass through scyewed joint between this valve body and this valve seat, and the 2nd O type circle is arranged between this valve body and this valve seat, the central shaft of this valve seat forms L shaped structure perpendicular to the central shaft N of this cylindrical shell so that this valve seat matches with cylindrical shell.
2. hydraulic flow-limiting safety explosion-proof valve as claimed in claim 1 is characterized in that, this cylindrical shell and this valve seat are respectively hollow cylindrical.
3. hydraulic flow-limiting safety explosion-proof valve as claimed in claim 2 is characterized in that, the outer peripheral surface of this cylindrical shell and this valve seat is respectively arranged with screw thread.
4. hydraulic flow-limiting safety explosion-proof valve as claimed in claim 1, it is characterized in that, offer a safety valve oil inlet hole in this cylindrical shell, offer a piston valve core oil inlet hole and a piston valve core metering hole in the piston valve core, offer a valve body turnover oilhole and a valve body main oil-hole in this valve body, offer a valve seat turnover oilhole in this valve seat.
5. hydraulic flow-limiting safety explosion-proof valve as claimed in claim 4 is characterized in that, this piston valve core oil inlet hole is opened in the end of this piston valve core, and this metering hole is opened in the inner peripheral surface of this piston valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120522015 CN202646234U (en) | 2011-12-13 | 2011-12-13 | Hydraulic current-limiting safe explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120522015 CN202646234U (en) | 2011-12-13 | 2011-12-13 | Hydraulic current-limiting safe explosion-proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646234U true CN202646234U (en) | 2013-01-02 |
Family
ID=47415350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120522015 Expired - Lifetime CN202646234U (en) | 2011-12-13 | 2011-12-13 | Hydraulic current-limiting safe explosion-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973461A (en) * | 2019-04-08 | 2019-07-05 | 江西资生科技有限公司 | A kind of explosive-proof hydraulic executing agency |
-
2011
- 2011-12-13 CN CN 201120522015 patent/CN202646234U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973461A (en) * | 2019-04-08 | 2019-07-05 | 江西资生科技有限公司 | A kind of explosive-proof hydraulic executing agency |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |