CN217582198U - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN217582198U CN217582198U CN202221093466.7U CN202221093466U CN217582198U CN 217582198 U CN217582198 U CN 217582198U CN 202221093466 U CN202221093466 U CN 202221093466U CN 217582198 U CN217582198 U CN 217582198U
- Authority
- CN
- China
- Prior art keywords
- valve
- ejector rod
- piston
- valve body
- liquid
- 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.)
- Active
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a safety valve, including valve body and case subassembly. The valve core assembly comprises an adjusting bolt, a spiral butterfly spring, a large ejector rod, a small ejector rod, a valve sleeve, a piston and a joint in threaded connection with the valve sleeve, wherein the adjusting bolt is in threaded connection with the valve body, a liquid inlet is formed in one end of the joint, liquid outlet holes are uniformly formed in the right end of the valve body, small holes are also uniformly formed in the valve sleeve, and the liquid outlet holes in the valve body and the small holes in the valve sleeve are kept on the same central axis. The pistons are uniformly provided with small holes. When the high-pressure liquid from the joint reaches the inner cavity of the piston, the piston can push the small ejector rod to move leftwards along with the continuous rise of the pressure, so that the small ejector rod pushes the large ejector rod to move leftwards by overcoming the spring force of the spiral disc spring, and when the piston moves to the inner cavity of the valve sleeve, the high-pressure liquid passes through the piston liquid guide hole and the valve sleeve liquid guide hole and is discharged from the liquid outlet hole of the valve body. Adopt the utility model discloses a relief valve compact structure, sealing performance are reliable, dependable performance, long service life.
Description
Technical Field
The utility model belongs to a colliery hydraulic pressure field, concretely relates to relief valve.
Background
The safety valve is a hydraulic pressure maintaining element with high working pressure specially designed for a mining hydraulic support, and is used for controlling a coal mine hydraulic support system, controlling the actual working resistance of the support and enabling the actual working resistance not to exceed an allowable value. The existing safety valve cannot correspondingly adjust the pressure to be unloaded according to actual working requirements, so that the safety valve cannot normally release pressure, and a hydraulic support and corresponding equipment of the hydraulic support malfunction.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide a compact structure, sealing performance is reliable, stable performance is reliable, long service life's relief valve.
In order to achieve the purpose, the safety valve comprises a valve body and a valve core assembly, wherein the valve core assembly comprises an adjusting bolt, a spiral butterfly spring, a large ejector rod, a small ejector rod, a valve sleeve, a piston and a joint, the adjusting bolt is in threaded connection with the valve body, the spiral butterfly spring is in threaded connection with the valve body, the large ejector rod, the small ejector rod, the valve sleeve, the piston and the joint are in threaded connection with the valve sleeve, a liquid inlet hole is formed in one end of the joint, liquid outlet holes are uniformly formed in the right end of the valve body, the valve sleeve and a boss at the right end of the valve body are matched with each other, liquid guide holes are uniformly formed in the valve sleeve, the liquid outlet holes in the valve body and the liquid guide holes in the valve sleeve are kept on the same central axis, liquid guide holes are uniformly formed in the piston, high-pressure liquid can reach the liquid outlet holes from the piston liquid guide holes and can be discharged, the large ejector rod is placed at the left end of the valve sleeve, a conical groove is formed in the right end of the large ejector rod, the small ejector rod is attached to the right end groove of the large ejector rod, the adjusting bolt is in threaded connection with the inner wall of the left end of the valve body, and the spiral butterfly spring is placed between the boss of the adjusting bolt and the large ejector rod.
The boss is arranged at one end of the large ejector rod of the safety valve, the boss is also arranged at one end of the adjusting bolt, and the spring sleeve is sleeved on the boss, so that the safety valve can be effectively prevented from being out of work due to spring deviation.
A plurality of liquid passing holes are uniformly distributed on the valve cover, the valve sleeve and the piston of the safety valve, so that working liquid can smoothly pass through the inner cavity of the piston and the inner cavity of the valve sleeve.
The safety valve performs proper selection and reasonable clearance fit on materials of the spring seat, the piston and the valve core, and ensures that the safety valve moves flexibly and reliably.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
fig. 2 is a schematic view of a hydraulic principle of the embodiment of the present invention.
Labeled as: 10. a valve body; 21. adjusting the bolt; 22. a large ejector rod; 23. a small ejector rod; 24. a valve housing; 25. A piston; 26. a joint; 30. a spiral disc spring; 101. a liquid outlet hole; 261. and a liquid inlet hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
A safety valve comprises a valve body 10 and a valve core assembly 20, wherein the valve core assembly comprises an adjusting bolt 21, a spiral butterfly spring 30, a large ejector rod 22, a small ejector rod 23, a valve sleeve 24, a piston 25 and a joint 26, the adjusting bolt is in threaded connection with the valve body 10, the joint 26 is in threaded connection with the valve sleeve 24, a liquid inlet hole 261 is formed in one end of the joint 26, liquid outlet holes 101 are uniformly formed in the right end of the valve body 10, the valve sleeve 24 is matched with a boss at the right end of the valve body 10, liquid guide holes are uniformly formed in the valve sleeve 24, and the liquid outlet holes 101 in the valve body 10 and the liquid guide holes in the valve sleeve 24 are kept on the same central axis. The piston 25 is also provided with liquid guide holes uniformly, so that high-pressure liquid can reach the liquid outlet hole from the piston liquid guide holes and be discharged, the left end of the valve sleeve 24 is provided with the large mandril 22, the right end of the large mandril is provided with the conical groove, the left end of the small mandril 23 is attached to the right end groove of the large mandril 22, the adjusting bolt 21 is in threaded connection with the inner wall of the left end of the valve body 10, and the spiral disc spring 30 is arranged between the boss of the adjusting bolt 21 and the boss of the large mandril 22.
The working principle of the safety valve is as follows: the utility model discloses use the emulsion as working medium usually, when the high-pressure liquid that connects 26 departments to arrive piston 25 inner chamber, along with the continuous rising of pressure, piston 25 can promote little ejector pin 23 and move left, and then makes little ejector pin 23 promote big ejector pin 22 and overcome the spring force of spiral dish spring 30 and move left, and when piston 25 moved the 24 inner chambers of valve barrel, high-pressure liquid was discharged from liquid hole 101 through piston 25 drain hole, 24 drain holes of valve barrel from valve body 10 through piston 25 drain hole, valve barrel.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (3)
1. A safety valve comprises a valve body and a valve core assembly and is characterized in that the valve core assembly comprises an adjusting bolt, a spiral butterfly spring, a large ejector rod, a small ejector rod, a valve sleeve, a piston and a joint in threaded connection with the valve sleeve, wherein the adjusting bolt is in threaded connection with the valve body, the spiral butterfly spring, the large ejector rod, the small ejector rod, the valve sleeve, the piston and the joint are in threaded connection with the valve sleeve, a liquid inlet hole is formed in one end of the joint, liquid outlet holes are uniformly formed in the right end of the valve body, the valve sleeve is matched with a boss at the right end of the valve body, liquid guide holes are uniformly formed in the valve sleeve, the liquid outlet holes in the valve body and the liquid guide holes in the valve sleeve are kept on the same central axis, the liquid guide holes are also uniformly formed in the piston, high-pressure liquid can reach the liquid outlet holes from the liquid guide holes of the piston and can be discharged, the large ejector rod is placed at the left end of the valve sleeve, a conical groove is formed in the right end of the large ejector rod, the left end of the small ejector rod is attached to the right end of the valve body, the adjusting bolt is in threaded connection with the inner wall of the valve body, and the boss of the adjusting bolt is placed between the boss of the large ejector rod.
2. The safety valve of claim 1, wherein: one end of the large ejector rod is provided with a boss, one end of the adjusting bolt is also provided with a boss, and the spring is sleeved on the boss.
3. The safety valve of claim 1, wherein: a plurality of liquid passing holes are uniformly distributed on the valve cover, the valve sleeve and the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221093466.7U CN217582198U (en) | 2022-05-09 | 2022-05-09 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221093466.7U CN217582198U (en) | 2022-05-09 | 2022-05-09 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582198U true CN217582198U (en) | 2022-10-14 |
Family
ID=83549917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221093466.7U Active CN217582198U (en) | 2022-05-09 | 2022-05-09 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582198U (en) |
-
2022
- 2022-05-09 CN CN202221093466.7U patent/CN217582198U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2431708A (en) | Releasable non-return valve | |
| CN110792650B (en) | Threaded cartridge type load retaining valve | |
| US5349894A (en) | Locking hydraulic actuator | |
| CN217582198U (en) | Safety valve | |
| RU2662789C2 (en) | Buckling pin valve | |
| CN117386604A (en) | Small-flow double-outlet electromagnetic plunger pump | |
| US4818194A (en) | Check valve assembly for fluid pressure intensifying apparatus | |
| CN204878101U (en) | Take off -load valve core to let out formula hydraulic pressure lock valve device in | |
| CN109236779B (en) | Hydraulic control one-way valve and pressure relief assembly | |
| US3891356A (en) | Fluid guide plunger system | |
| CN111005906A (en) | Ultrahigh-pressure large-flow high-water-base unloading valve | |
| CN105673594A (en) | Hydraulic integrated manifold block device | |
| US4450870A (en) | Liquid spring accumulator with self-charging means | |
| CN116066445A (en) | Balance type leakless low friction hydraulic cylinder | |
| CN103703266B (en) | Braking or system of connections and the method that operates this system | |
| CN217355710U (en) | Push/balance safety valve | |
| CN201714748U (en) | Safety valve for multi-way valve | |
| US5609477A (en) | Inlet/outlet valve arrangement for a fluid pressure intensifying apparatus | |
| CN212616537U (en) | Pressure reducing valve with built-in oil return one-way pressure stabilizing structure | |
| CN113294398A (en) | Secondary overflow valve for main control valve of excavator | |
| CN217177011U (en) | Automatic let out electrohydraulic servo valve end cover structure | |
| CN218703193U (en) | Structure for automatically compensating oil leakage of brake mechanism of brake booster pump | |
| CN211733716U (en) | Oil pump throttling mechanism of jack | |
| CN219588194U (en) | Hydraulic control one-way valve | |
| CN218407982U (en) | Externally-mounted speed limiting valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |