CN217440865U - Pressure difference type internal relief pressure regulating overflow valve - Google Patents
Pressure difference type internal relief pressure regulating overflow valve Download PDFInfo
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- CN217440865U CN217440865U CN202221044662.5U CN202221044662U CN217440865U CN 217440865 U CN217440865 U CN 217440865U CN 202221044662 U CN202221044662 U CN 202221044662U CN 217440865 U CN217440865 U CN 217440865U
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Abstract
A differential pressure type internal relief pressure regulating overflow valve comprises a main valve shell, wherein the main valve shell is of a transverse internal cylindrical hollow T-shaped structure, and is provided with a liquid inlet pipe and a liquid outlet pipe; the main valve housing is internally provided with a main valve sleeve and an auxiliary valve sleeve, the main valve sleeve and the auxiliary valve sleeve have the same structure and are oppositely arranged, and the main valve sleeve and the auxiliary valve sleeve are of hollow cylindrical structures; a main valve core is arranged in the main valve sleeve; an auxiliary valve core is arranged in the auxiliary valve sleeve, and the main valve core is connected with the auxiliary valve core through a connecting rod; the beneficial effects of the utility model reside in that: the device can realize the function of realizing pressure control for the external connection of equipment with larger internal pressure by matching the main valve shell and the main valve sleeve, the main valve core, the auxiliary valve sleeve and the auxiliary valve core arranged in the main valve shell, and the structure of the device is assembled and fixed in a combined mode; therefore, the device is convenient to disassemble and maintain, and the inside of the device can be cleaned regularly.
Description
Technical Field
The utility model relates to an industrial safety protective equipment technical field especially relates to a differential overflow valve with safety protection function.
Background
The relief valve is also called as a safety valve, the relief valve is a key safety application guarantee for ensuring a pressure pipeline and a pressure container as the name implies, in order to ensure the normal work of the safety valve and prolong the service life of the safety valve, the abnormal phenomena of leakage, blockage, spring corrosion and the like of the safety valve in operation are periodically checked when the relief valve is used, whether a locking nut of an adjusting screw sleeve and an adjusting ring fastening screw is loosened or not is observed, and if a problem is found, proper maintenance measures are timely taken; the safety valve is also required to be periodically detached for complete cleaning, inspection, regrinding and reuse after setting; the safety valve installed outdoors needs to adopt proper protection measures to prevent rain, fog, dust, rust and other objects from invading the safety valve and the discharge pipeline, and when the environment is lower than zero ℃, necessary anti-freezing measures are also needed to ensure the reliability of the action of the safety valve.
The traditional overflow valve generally has safety protection on clean liquid or gas, pressure booster pumps or hydraulic stations of hydraulic devices also need pressure protection of overload work of the devices, and then the traditional overflow valve is difficult to carry out pressure limiting adjustment and internal cleaning.
Due to the particularity of the hydraulic equipment, the driving of the hydraulic device is mainly realized through the pressurization of hydraulic oil, the blockage of an external protection device is easily caused by the hydraulic oil due to the particularity, and meanwhile, the hydraulic oil discharged by overflowing needs to be directionally collected for reuse, so that the waste of the hydraulic oil is avoided; however, the use requirements are that the traditional relief valve is difficult to realize.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the prior art, provide a pressure differential internal relief pressure regulating overflow valve.
The utility model discloses a realize through following technical scheme: a differential pressure type internal pressure relief and regulation overflow valve comprises a main valve shell, wherein the main valve shell is of a T-shaped structure with a hollow transverse inner cylinder, a liquid inlet pipe and a liquid outlet pipe are respectively arranged inside a vertical part of the main valve shell, and the liquid inlet pipe and the liquid outlet pipe are communicated with the transverse hollow structure of the main valve shell; the main valve casing is internally provided with a main valve sleeve and an auxiliary valve sleeve, the main valve sleeve and the auxiliary valve sleeve have the same structure and are oppositely arranged, the main valve sleeve and the auxiliary valve sleeve are of hollow cylindrical structures, the side walls of the front parts of the main valve sleeve and the auxiliary valve sleeve are provided with valve ports, and the side walls of the rear parts of the main valve sleeve and the auxiliary valve sleeve are provided with pressure relief ports; a main valve core is arranged in the main valve sleeve, the main valve core is of a cylindrical structure tightly attached to the inner part of the main valve sleeve, and a pressure relief spring is arranged at the rear end of the main valve core; an auxiliary valve core is arranged in the auxiliary valve sleeve and is of a cylindrical structure clinging to the inside of the auxiliary valve sleeve; the main valve core and the auxiliary valve core are connected through a connecting rod.
Preferably, a position corresponding to the valve port in the auxiliary valve sleeve is provided with a limit ring.
Preferably, the main valve core and the auxiliary valve core are provided with sealing grooves with annular sunken structures, and rubber sealing rings are arranged in the sealing grooves.
Preferably, a backflow channel is arranged in the main valve shell, and the backflow channel is communicated with the liquid outlet pipe at the corresponding position of the pressure relief port of the main valve sleeve and the pressure relief port of the auxiliary valve sleeve respectively.
Preferably, the rear end of the main valve element is provided with a fixing groove of a cylindrical invagination groove structure, and the pressure relief spring is fixed in the fixing groove.
Preferably, the valve port is of a water-drop-shaped hollow structure.
Preferably, the inner diameter of the main valve sleeve is larger than the inner diameter of the auxiliary valve sleeve, and the diameter of the main valve core is larger than that of the auxiliary valve core.
Preferably, the two ends of the main valve shell are provided with maintenance cover plates, and the maintenance cover plates are arranged at the two ends of the main valve shell through screw threads.
Furthermore, the inner side of the corresponding maintenance cover plate in the main valve sleeve is provided with an adjusting block.
Preferably, the main valve core and the auxiliary valve core are connected through a connecting rod, two ends of the connecting rod 5 are provided with screw threads, and the main valve core and the auxiliary valve core are rotationally fixed at two ends of the connecting rod.
The beneficial effects of the utility model reside in that: the device can realize the function of realizing pressure control for the external connection of equipment with larger internal pressure by matching the main valve shell and the main valve sleeve, the main valve core, the auxiliary valve sleeve and the auxiliary valve core arranged in the main valve shell, and the structure of the device is assembled and fixed in a combined mode; therefore, the device can be conveniently disassembled and maintained, the inside of the device can be conveniently cleaned regularly, the use reliability of the device is guaranteed, meanwhile, the adjustable structure can adapt to external application of different devices in adjustment ranges of different control pressures, and the practicability of the device is improved.
Drawings
Fig. 1 is a schematic diagram of the external structure of an integral device of a differential pressure type internal pressure relief and regulation overflow valve.
Fig. 2 is a schematic diagram of the internal structure of the whole device of a differential pressure type internal pressure relief and regulation overflow valve.
Fig. 3 is a schematic diagram of the overall structure of the main valve core and the auxiliary valve sleeve of a differential pressure type internal relief pressure-regulating overflow valve.
FIG. 4 is a schematic diagram of the internal structure of the main valve element and the auxiliary valve sleeve of a differential pressure internal relief pressure-regulating overflow valve.
Wherein: 1. a main valve housing; 11. a liquid inlet pipe; 12. a liquid outlet pipe; 2. a main valve sleeve; 21. a main valve sleeve; 22. A pressure relief spring; 23. fixing grooves; 3. an auxiliary valve housing; 31. an auxiliary valve housing; 4. a valve port; 41. a pressure relief port; 5. A connecting rod; 6. a limiting ring; 7. a sealing groove; 8. a return channel; 9. overhauling the cover plate; 91. and a regulating block.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
As shown in fig. 1-4, a differential pressure internal relief pressure regulating overflow valve comprises a main valve housing 1, wherein the main valve housing 1 is a transverse internal cylindrical hollow T-shaped structure, and the main valve housing 1 is a main functional structure of an integral device; a liquid inlet pipe 11 and a liquid outlet pipe 12 are respectively arranged inside the vertical part of the main valve shell 1, the liquid inlet pipe 11 and the liquid outlet pipe 12 are communicated with the transverse hollow structure of the main valve shell 1, the liquid inlet pipe 11 is used for being communicated with a pressure cavity of a hydraulic device, and hydraulic oil can enter the device; the liquid outlet pipe 12 is used for being connected with an external collecting device, and the decompressed hydraulic oil flows out of the liquid outlet pipe 12 to be collected, so that pollution and waste are avoided; a main valve sleeve 2 and an auxiliary valve sleeve 3 are arranged in a main valve shell 1, the main valve sleeve 2 and the auxiliary valve sleeve 3 are identical in structure and are arranged oppositely, the main valve sleeve 2 and the auxiliary valve sleeve 3 are of hollow cylindrical structures, a valve port 4 is arranged on the side wall of the front part of the main valve sleeve 2 and the side wall of the rear part of the auxiliary valve sleeve 3, and a pressure relief port 41 is arranged on the side wall of the rear part of the main valve sleeve 2 and the side wall of the auxiliary valve sleeve 3; a main valve core 21 is arranged in the main valve sleeve 2, the main valve core 21 is of a cylindrical structure tightly attached to the inner part of the main valve sleeve 2, and a pressure relief spring 22 is arranged at the rear end of the main valve core 21; an auxiliary valve core 31 is arranged in the auxiliary valve sleeve 3, and the auxiliary valve core 31 is of a cylindrical structure tightly attached to the inside of the auxiliary valve sleeve 3; the main valve core 21 and the auxiliary valve core 31 are connected through a connecting rod 5, the main function structures of the interior of the whole device are a main valve sleeve 2, the main valve sleeve 21, a pressure relief spring 22, an auxiliary valve sleeve 3, an auxiliary valve sleeve 31 and the connecting rod 5, high-pressure hydraulic oil entering the device pushes the main valve sleeve 21, and discharged hydraulic oil is discharged from a liquid outlet pipe 12.
The position of the valve port 4 in the auxiliary valve sleeve 3 is provided with a limiting ring 6, so that the auxiliary valve sleeve 3 can be effectively prevented from excessively moving, and the device is prevented from being out of order.
The main valve core 21 and the auxiliary valve core 31 are provided with sealing grooves 7 of circular ring invagination structures, rubber sealing rings are arranged in the sealing grooves 7, hydraulic oil can be prevented from overflowing from gaps in the device, and the device is prevented from being out of service.
A meeting flow channel 8 is arranged in the main valve shell 1, and the meeting flow channel 8 is respectively communicated with the positions corresponding to the pressure relief ports 41 of the main valve sleeve 2 and the auxiliary valve sleeve 3 and the liquid outlet pipe 12 and is used for collecting air and leaked hydraulic oil in the inner cavities of the main valve sleeve 2 and the auxiliary valve sleeve 3 of the device.
The rear end of main valve element 21 sets up the fixed slot 23 of cylindrical invagination groove structure, and pressure release spring 22 is fixed in fixed slot 23, and fixed slot 23 is used for carrying out pressure release spring 22's fixed.
Valve port 4 is water droplet shape hollow out construction, can prevent to press the high-speed entering device of hydraulic liquid night, causes the damage of device.
The internal diameter of the main valve sleeve 2 is larger than the internal diameter of the auxiliary valve sleeve 3 directly, the diameter of the main valve core 21 is larger than the diameter of the auxiliary valve core 31, and therefore clear pressure change response can be achieved, and main pressure acts on the main valve sleeve 2 and the main valve core 21.
The both ends of main valve casing 1 set up maintenance apron 9, and maintenance apron 9 sets up in the both ends of main valve casing 1 through the screw thread, is convenient for carry out dismantling and the maintenance of device.
The corresponding maintenance cover plate 9 inside the main valve sleeve 2 is provided with an adjusting block 91, and the size of the adjusting block 91 is adjusted to be matched with a pressure relief spring 22, so that the control of the device control and adjustment pressure threshold value can be realized.
The main valve core 21 and the auxiliary valve core 31 are connected through a connecting rod 5, two ends of the connecting rod 5 are provided with screw threads, and the main valve core 21 and the auxiliary valve core 31 are rotationally fixed at two ends of the connecting rod 5; the disassembly and the overhaul of the device are convenient.
Principle of operation
As shown in fig. 1-4, the device works normally, in order to avoid the pressure structure of the external hydraulic device from being out of order, firstly, the hydraulic oil of the external hydraulic device enters the device through the liquid inlet pipe 11, and the hydraulic oil enters the auxiliary valve sleeve 3 and acts on the main valve core 21 of the main valve sleeve 2 and the auxiliary valve sleeve 31 of the auxiliary valve sleeve 3; when the pressure is overlarge, the main valve core 21 and the pressure relief beach spring 22 of the main valve sleeve 2 are extruded; when the pressure exceeds the protection range, main spool 21 of main spool 2 will move to the position of valve port 4 of main spool 2, and the excess hydraulic oil will be discharged from outlet pipe 12.
When the device needs to be cleaned and maintained, the maintenance cover plate 9 is detached, all parts inside the main valve shell 1 are taken out respectively, cleaning or replacement is carried out, and the device is assembled again after the cleaning or replacement is finished.
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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (10)
1. The utility model provides a pressure differential internal relief pressure regulating overflow valve which characterized in that: the valve comprises a main valve shell, wherein the main valve shell is of a T-shaped structure with a hollow cylinder in the transverse inner part, a liquid inlet pipe and a liquid outlet pipe are respectively arranged in the vertical part of the main valve shell, and the liquid inlet pipe and the liquid outlet pipe are communicated with the transverse hollow structure of the main valve shell; the main valve shell is internally provided with a main valve sleeve and an auxiliary valve sleeve, the main valve sleeve and the auxiliary valve sleeve have the same structure and are oppositely arranged, the main valve sleeve and the auxiliary valve sleeve are of hollow cylindrical structures, the side walls of the front parts of the main valve sleeve and the auxiliary valve sleeve are provided with valve ports, and the side walls of the rear parts of the main valve sleeve and the auxiliary valve sleeve are provided with pressure relief ports; a main valve core is arranged in the main valve sleeve, the main valve core is of a cylindrical structure tightly attached to the inner part of the main valve sleeve, and a pressure relief spring is arranged at the rear end of the main valve core; an auxiliary valve core is arranged in the auxiliary valve sleeve and is of a cylindrical structure clinging to the inside of the auxiliary valve sleeve; the main valve core and the auxiliary valve core are connected through a connecting rod.
2. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: and a limiting ring is arranged in the position corresponding to the valve port in the auxiliary valve sleeve.
3. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: the main valve core and the auxiliary valve core are provided with sealing grooves of circular ring-shaped invagination structures, and rubber sealing rings are arranged in the sealing grooves.
4. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: the main valve shell is internally provided with a backflow channel, and the backflow channel is communicated with the liquid outlet pipe at the corresponding position of the pressure relief port of the main valve sleeve and the pressure relief port of the auxiliary valve sleeve.
5. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: the rear end of the main valve core is provided with a fixing groove of a cylindrical invagination groove structure, and the pressure relief spring is fixed in the fixing groove.
6. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: the valve port is of a water drop-shaped hollow structure.
7. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: the inner diameter of the main valve sleeve is larger than that of the auxiliary valve sleeve, and the diameter of the main valve core is larger than that of the auxiliary valve core.
8. The differential pressure type internal relief pressure regulating overflow valve of claim 1, characterized in that: the two ends of the main valve shell are provided with maintenance cover plates, and the maintenance cover plates are arranged at the two ends of the main valve shell through screw threads.
9. The differential pressure type internal relief pressure regulating overflow valve of claim 8, characterized in that: the inner side of the corresponding maintenance cover plate in the main valve sleeve is provided with an adjusting block.
10. The differential pressure type internal relief pressure regulating overflow valve of claim 8, characterized in that: the main valve core and the auxiliary valve core are connected through a connecting rod, screw threads are arranged at two ends of the connecting rod, and the main valve core and the auxiliary valve core are rotationally fixed at two ends of the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221044662.5U CN217440865U (en) | 2022-04-29 | 2022-04-29 | Pressure difference type internal relief pressure regulating overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221044662.5U CN217440865U (en) | 2022-04-29 | 2022-04-29 | Pressure difference type internal relief pressure regulating overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217440865U true CN217440865U (en) | 2022-09-16 |
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ID=83219759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221044662.5U Active CN217440865U (en) | 2022-04-29 | 2022-04-29 | Pressure difference type internal relief pressure regulating overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217440865U (en) |
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2022
- 2022-04-29 CN CN202221044662.5U patent/CN217440865U/en active Active
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