CN213685426U - Hydraulic pressure control overflow valve - Google Patents
Hydraulic pressure control overflow valve Download PDFInfo
- Publication number
- CN213685426U CN213685426U CN201922492465.4U CN201922492465U CN213685426U CN 213685426 U CN213685426 U CN 213685426U CN 201922492465 U CN201922492465 U CN 201922492465U CN 213685426 U CN213685426 U CN 213685426U
- Authority
- CN
- China
- Prior art keywords
- pilot valve
- internally mounted
- main valve
- pilot
- 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
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model belongs to the technical field of mechanical engineering, especially, be a hydraulic pressure control overflow valve, including the main valve body device, the main valve seat is installed to main valve body top, the main valve core is installed to main valve seat top, main valve core internally mounted has the main valve spring, No. three sealing washers are installed to main valve core one side, the pilot valve body is installed to main valve core top, pilot valve body internally mounted has the pressure regulating nut, pilot valve body internally mounted has lock nut, pilot valve body internally mounted has the pilot valve seat, pilot valve seat internally mounted has the pilot valve core, pilot valve seat internally mounted has the pilot valve spring, pilot valve seat internally mounted has a sealing washer, pilot valve seat internally mounted has the regulation pole, when system pressure drops to the closing pressure of overflow valve, the overflow valve is closed, the pump is to system loading, and pilot valve spring and main valve spring are installed respectively at the pilot valve body, The main valve body has small pressure regulating deviation and sensitive movement.
Description
Technical Field
The utility model belongs to the technical field of mechanical engineering, especially, be a hydraulic pressure control overflow valve.
Background
When the overflow valve works, the pressure of the spring is utilized to adjust and control the pressure of hydraulic oil, when the pressure of the hydraulic oil is smaller than the pressure required by work, the valve core is pressed at an inflow port of the hydraulic oil by the spring, when the pressure of the hydraulic oil exceeds the pressure allowed by the work, namely the pressure of the hydraulic oil is larger than the pressure of the spring, the valve core is jacked up by the hydraulic oil, the hydraulic oil flows back to the oil tank through the overflow valve, the higher the flow of the hydraulic oil is, if the pressure of the hydraulic oil is smaller than or equal to the pressure of the spring, the valve core falls down to seal a hydraulic oil inlet, and because the pressure of the hydraulic oil output by the oil pump is fixed, and the pressure of the hydraulic oil for the working oil cylinder is always smaller than the pressure of the hydraulic oil output by the oil pump, some hydraulic oil always flows back to the oil tank from the overflow valve during normal, The overflow valve normally works, but the overflow valve has small pressure regulating range, large pressure regulating deviation, large pressure oscillation, insensitive motion, small overload capacity and large noise.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a the utility model belongs to the technical field of mechanical engineering, especially, be a hydraulic pressure control overflow valve, have that the pressure regulating range is big, the pressure regulating deviation is little, the sensitive characteristics of motion.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hydraulic pressure control overflow valve, includes the main valve body device, the main valve seat is installed to main valve body top, the main valve core is installed to main valve seat top, main valve core internally mounted has the main valve spring, No. three sealing washers are installed to main valve core one side, the pilot valve body is installed to main valve core top, pilot valve body internally mounted has the pressure regulating nut, pilot valve body internally mounted has lock nut, pilot valve body internally mounted has the pilot valve seat, pilot valve seat internally mounted has the pilot valve case, pilot valve seat internally mounted has the pilot valve spring, pilot valve seat internally mounted has a sealing washer, pilot valve seat internally mounted has the regulation pole, the piston is installed to one side of pilot valve seat for oil, No. two sealing washers are installed to piston one side for oil.
Preferably, the pressure regulating nut regulates and controls the pressure of the overflow valve through pressure regulation; simple and convenient, convenient to operate, and the pressure regulating range is big.
Preferably, the adjusting rod moves under the action of pressure and moves towards the direction of the pilot valve core; the adjusting rod and the pilot valve core are both arranged in the pilot valve body, and the movement is sensitive.
Preferably, the pilot valve spring is arranged at one end of the adjusting rod and moves together with the adjusting rod under the action of pressure; the pilot valve spring has a buffering effect on the adjusting rod.
Preferably, the oil piston is arranged at the tail end of one side of the pilot valve seat and is used for normally discharging hydraulic oil; the oil piston is simple to use and convenient to replace.
Preferably, the main valve core moves in the main valve seat under the action of pressure; because of the protection of the main valve seat, the pressure regulating deviation is small and the movement is sensitive.
Preferably, the third sealing ring, the second sealing ring and the first sealing ring are all O-shaped sealing rings; the O-shaped structure is rich in elasticity and rebound resilience, does not corrode a contact surface and does not pollute a medium.
Compared with the prior art, the beneficial effects of the utility model are that: when the pressure of the hydraulic oil exceeds the allowable working pressure, namely the pressure of the hydraulic oil is greater than the pressure of the pilot valve spring, the pilot valve core is jacked up by the hydraulic oil, the hydraulic oil flows in, flows out from one side port and flows back to the oil tank.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the cross-sectional structure of the overflow valve assembly of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of the pilot valve body of the present invention;
fig. 3 is a schematic sectional view of the pilot valve seat of the present invention;
in the figure: 1. a pressure regulating nut; 2. adjusting a rod; 3. locking the nut; 4. a first sealing ring; 5. a pilot valve spring; 6. a pilot valve body; 7. a pilot valve spool; 8. a pilot valve seat; 9. a second sealing ring; 10. a piston for oil; 13 a main valve body; 14. a main valve seat; 15. a main valve element; 16. a main valve spring; 17. and a third sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides the following technical solutions: a hydraulic pressure control overflow valve comprises a main valve body 13 device, a main valve seat 14 is arranged above the main valve body 13, a main valve core 15 is arranged above the main valve seat 14, a main valve spring 16 is arranged in the main valve core 15, a third sealing ring 17 is arranged on one side of the main valve core 15, a pilot valve body 6 is arranged above the main valve core 15, the pressure regulating nut 1 is arranged in the pilot valve body 6, the locking nut 3 is arranged in the pilot valve body 6, a pilot valve seat 8 is arranged in the pilot valve body 6, a pilot valve core 7 is arranged in the pilot valve seat 8, a pilot valve spring 5 is arranged inside the pilot valve seat 8, a first sealing ring 4 is arranged inside the pilot valve seat 8, the oil-saving type oil valve is characterized in that the adjusting rod 2 is installed inside the pilot valve seat 8, the piston 10 for oil is installed on one side of the pilot valve seat 8, and the second sealing ring 9 is installed on one side of the piston 10 for oil.
Specifically, the pressure regulating nut 1 regulates and controls the pressure of an overflow valve thereof through pressure regulation; is simple and convenient and is convenient to operate.
Specifically, the adjusting rod 2 moves under the action of pressure and moves towards the pilot valve core 7.
Specifically, the pilot valve spring 5 is arranged at one end of the adjusting rod 2 and moves together with the adjusting rod 2 under the action of pressure; the pilot valve spring 5 has a damping effect on the adjusting lever 2.
Specifically, the oil piston 10 is installed at the end of one side of the pilot valve seat 8 and used for normally discharging hydraulic oil; the oil piston 10 is simple to use and convenient to replace.
In particular, said main valve spool 15 is movable under pressure inside the main valve seat 14.
Specifically, the third sealing ring 17, the second sealing ring 9 and the first sealing ring 4 are all O-shaped sealing rings; the O-shaped structure is rich in elasticity and rebound resilience, does not corrode a contact surface and does not pollute a medium.
The working principle and the using process of the invention are as follows: when the overflow valve works, pressure regulation is carried out through the pressure regulating nut 1, the shape of the pilot valve spring 5 is driven to change, the pressure of hydraulic oil is regulated and controlled, when the pressure of the hydraulic oil is smaller than the pressure required by work, the pilot valve core 7 is pressed in an inflow port of the hydraulic oil by the pilot valve spring 5, when the pressure of the hydraulic oil exceeds the working allowable pressure of the hydraulic oil, namely the pressure is larger than the pilot valve spring 5, the pilot valve core 7 is jacked up by the hydraulic oil, the hydraulic oil flows in from a port on one side and flows back to an oil tank, the pressure of the hydraulic oil is larger, the pilot valve core 7 is jacked up by the hydraulic oil to be higher, if the pressure of the hydraulic oil is smaller than or equal to the pressure of the pilot valve spring, the pilot valve core 7 falls down, a hydraulic oil inlet is sealed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a hydraulic pressure control overflow valve which characterized in that: including the main valve body (13) device, main valve seat (14) are installed to main valve body (13) top, main valve core (15) are installed to main valve seat (14) top, main valve core (15) internally mounted has main valve spring (16), No. three sealing washer (17) are installed to main valve core (15) one side, pilot valve body (6) are installed to main valve core (15) top, pilot valve body (6) internally mounted has pressure regulating nut (1), pilot valve body (6) internally mounted has lock nut (3), pilot valve body (6) internally mounted has pilot valve seat (8), pilot valve seat (8) internally mounted has pilot valve core (7), the internally mounted of pilot valve seat (8) has pilot valve spring (5), pilot valve seat (8) internally mounted has sealing washer (4) No. one, pilot valve seat (8) internally mounted has regulation pole (2), and one side of the pilot valve seat (8) is provided with an oil piston (10), and one side of the oil piston (10) is provided with a second sealing ring (9).
2. The hydraulic pressure control relief valve according to claim 1, characterized in that: the pressure regulating nut (1) regulates and controls the pressure of an overflow valve of the pressure regulating nut through pressure regulation.
3. The hydraulic pressure control relief valve according to claim 1, characterized in that: the adjusting rod (2) moves under the action of pressure and moves towards the direction of the pilot valve core (7).
4. The hydraulic pressure control relief valve according to claim 1, characterized in that: the pilot valve spring (5) is arranged at one end of the adjusting rod (2) and moves together with the adjusting rod (2) under the action of pressure.
5. The hydraulic pressure control relief valve according to claim 1, characterized in that: and the oil piston (10) is arranged at the tail end of one side of the pilot valve seat (8) and is used for normally discharging hydraulic oil.
6. The hydraulic pressure control relief valve according to claim 1, characterized in that: the main valve element (15) moves in the main valve seat (14) under the action of pressure.
7. The hydraulic pressure control relief valve according to claim 1, characterized in that: and the third sealing ring (17), the second sealing ring (9) and the first sealing ring (4) are all O-shaped sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492465.4U CN213685426U (en) | 2019-12-31 | 2019-12-31 | Hydraulic pressure control overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922492465.4U CN213685426U (en) | 2019-12-31 | 2019-12-31 | Hydraulic pressure control overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213685426U true CN213685426U (en) | 2021-07-13 |
Family
ID=76723749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922492465.4U Expired - Fee Related CN213685426U (en) | 2019-12-31 | 2019-12-31 | Hydraulic pressure control overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213685426U (en) |
-
2019
- 2019-12-31 CN CN201922492465.4U patent/CN213685426U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204805220U (en) | Piston ultralow pressure overflow valve | |
| CN106245781A (en) | Frictional force adjustable type friction pendulum slip support abutment | |
| CN105090600A (en) | Novel electric-hydraulic proportional overflow valve | |
| US2474122A (en) | Pilot valve | |
| CN108223493B (en) | Balance valve with variable pilot ratio | |
| CN111059330A (en) | Hydraulic pressure control overflow valve | |
| CN103291986A (en) | Directly-operated type reducing valve | |
| CN213685426U (en) | Hydraulic pressure control overflow valve | |
| CN209538774U (en) | A kind of pressure controllable type fluid linking damper | |
| CN100356081C (en) | Hydraulic damper valve based on flow regulation | |
| CN203348653U (en) | Directly-operated type sequence valve | |
| CN202520680U (en) | Novel direct-acting overflow valve | |
| CN2591359Y (en) | Damping wear resisting non-return valve | |
| CN212480260U (en) | Three-way pressure reducing valve with overflow function | |
| CN204922013U (en) | Positive ratio pressure reducing valve of normal close formula electromagnetism | |
| CN212616537U (en) | Pressure reducing valve with built-in oil return one-way pressure stabilizing structure | |
| CN208749708U (en) | A kind of two-way unidirectional sequence valve arrangement | |
| CN208669921U (en) | A kind of mechanical automatic adjustment pressure fluid linking damper | |
| CN109611403A (en) | A kind of overflow type hydraulically balanced valve with vibration-damping function | |
| CN205118399U (en) | Underground works self -adaptation pressure control valve | |
| CN202252058U (en) | Two-way sealing structure for sleeve of sleeve adjusting valve | |
| CN204436950U (en) | A kind of drum-type super-low voltage relief valve being beneficial to accurate voltage regulating | |
| CN209444646U (en) | A kind of overflow type hydraulically balanced valve with vibration-damping function | |
| CN109611587A (en) | The compensation device of valve opening and closing mechanism | |
| CN204061393U (en) | A kind of explosion-proof relief valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20210713 Termination date: 20211231 |