CN114060338A - Pressure reducing valve with high-pressure automatic closing protection function - Google Patents
Pressure reducing valve with high-pressure automatic closing protection function Download PDFInfo
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- CN114060338A CN114060338A CN202111082121.1A CN202111082121A CN114060338A CN 114060338 A CN114060338 A CN 114060338A CN 202111082121 A CN202111082121 A CN 202111082121A CN 114060338 A CN114060338 A CN 114060338A
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- valve
- valve core
- hole
- valve body
- pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/025—Pressure reducing valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/004—Fluid pressure supply failure
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a pressure reducing valve with a high-pressure automatic closing protection function, which comprises a valve body, wherein a valve core is arranged in the valve body in a sliding manner, a spring is arranged between the valve body and the valve core, one end of the valve body is connected with a connecting cylinder, and a valve seat is arranged between the connecting cylinder and the valve core. According to the invention, the valve core is sleeved with the boss inside the valve body, the spring is arranged on one side of the valve core, and the valve core can slide along the boss inside the valve body, so that the device can realize automatic adjustment under the condition that the pressure of the inlet and the pressure of the outlet of the valve are different, and when the pressure of the outlet is too high, the valve core can be tightly attached to the boss inside the valve body to complete blocking.
Description
Technical Field
The invention belongs to the technical field of pressure reducing valves, and relates to a pressure reducing valve with a high-pressure automatic closing protection function.
Background
In the middle of the engineering, hydraulic system has very extensive application, the excavator, the loader, all kinds of lathe, robotic arm, hydraulic system such as military project equipment, need to use the relief pressure valve to carry out pressure control among many systems, and all there is certain potential safety hazard in the hydraulic system of high pressure, especially the exit position of relief pressure valve, once the pressure reduction effect is unsatisfactory, can cause outlet pipeline pressure too high, even lead to the incident, all kinds of relief pressure valve designs are many, but rarely has the function that the relief pressure valve has high pressure automatic protection, to us, it is very big to develop a simple structure's relief pressure valve that has self-protection function.
In the existing hydraulic system, when the required pressure reduction effect exceeds the adjusting capacity of the pressure reduction valve, the pressure reduction valve cannot complete self-adjustment or close to protect the hydraulic system, so that the problems of insensitivity, reduced precision, even damage and the like of the hydraulic system occur, irrecoverable economic loss is caused, and even the personal safety of operators is threatened.
In view of the above, the present invention provides a pressure reducing valve with a high-pressure automatic closing protection function, which is developed and improved to solve the problems and improve the practical value.
Disclosure of Invention
The invention aims to provide a pressure reducing valve with a high-pressure automatic closing protection function, which can solve the problems of insensitivity, low precision and even damage of a hydraulic system.
According to the technical scheme provided by the invention: the pressure reducing valve with the high-pressure automatic closing protection function comprises a valve body, a valve core is arranged in the valve body in a sliding mode, a spring is arranged between the valve body and the valve core, one end of the valve body is connected with a connecting cylinder, and a valve seat is arranged between the connecting cylinder and the valve core.
As a further improvement of the invention, the valve body is of a through structure, an inner hollow cylinder is arranged in the right side of the valve body, threaded holes are formed in the left end and the right end of the valve body, an accommodating cavity is formed by the outer periphery of the inner hollow cylinder, the inner periphery of the valve body and the inner wall of the valve body, the outer periphery of the inner hollow cylinder is in a step shape, a first step surface and a second step surface are arranged from the left to the outside, the left end surface of the first step surface is a sealing end surface, and a vent hole is formed in the valve body, one end of the vent hole is communicated with the atmosphere, and the other end of the vent hole is communicated with the accommodating cavity.
As a further improvement of the invention, the left side of the valve core is provided with a valve core check ring, the right side of the valve core is provided with a valve core through hole, the valve core check ring is provided with an orifice hole-, the valve core through hole is communicated with the orifice hole-, and the orifice hole-can be isolated from the inner hollow cylinder by a sealing end face.
As a further improvement of the invention, the valve body is coaxial with the valve core, the inner periphery of the through hole of the valve core is matched with the second step surface of the outer periphery of the inner hollow cylinder, the inner periphery of the through hole of the valve core slides along the outer periphery of the inner hollow cylinder, and the distance from the inner periphery of the sealing end surface to the axis is smaller than the minimum distance from the overflowing hole to the axis.
As a further improvement of the invention, the wall of the left end hole of the valve core through hole is a first stress surface, and the left end surface of the valve core is a second stress surface.
As a further improvement of the invention, the valve core retainer ring is uniformly provided with a plurality of throttling holes-.
As a further improvement of the invention, the spring is positioned in the accommodating cavity, the spring is sleeved on the periphery of the through hole of the valve core, the right end of the spring props against the right inner wall of the valve body, and the left end of the spring props against the check ring of the valve core.
As a further improvement of the invention, the periphery of the connecting cylinder is provided with a thread structure, and the middle part of the connecting cylinder is provided with an internal thread hole and a connecting cylinder hole which are communicated from outside to inside.
As a further improvement of the invention, the periphery of the valve seat is provided with a step, the left end surface of the valve seat is tightly attached to the connecting cylinder, and a valve seat hole is arranged in the valve seat.
As a further improvement of the invention, a first sealing ring is sleeved on the second step surface, and a third sealing ring is arranged on the left end surface of the valve seat.
The positive progress effect of this application lies in:
1. according to the invention, the valve core is sleeved with the boss inside the valve body, the spring is arranged on one side of the valve core, and the valve core can slide along the boss inside the valve body, so that the device can realize automatic adjustment under the condition that the pressure of the inlet and the pressure of the outlet of the valve are different, and when the pressure of the outlet is too high, the valve core can be tightly attached to the boss inside the valve body to complete blocking.
2. Through the improvement of the existing device, the device has the advantages of simple structure, low cost, self-adjustment and safe use, thereby effectively solving the problems and the defects of the existing device.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the cross-sectional structure A-A of the present invention.
Fig. 3 is a schematic diagram of the explosive structure of the present invention.
FIG. 4 is a schematic view of the cross-sectional axial structure of the present invention.
Fig. 5 is a schematic view of a valve cartridge closing structure of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover such processes, methods, systems, articles, or apparatus that comprise a list of steps or elements, are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, articles, or apparatus.
Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as being fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 to 5 include a valve body 1, a spring 2, a valve element 3, a first seal ring 4, a second seal ring 5, a valve seat 6, a third seal ring 7, a connecting cylinder 8, and the like.
As shown in fig. 1 and 2, the invention relates to a pressure reducing valve with a high-pressure automatic closing protection function, which comprises a valve body 1, wherein a valve core 3 is arranged in the valve body 1 in a sliding manner, a spring 2 is arranged between the valve body 1 and the valve core 3, one end of the valve body 1 is connected with a connecting cylinder 8, and a valve seat 6 is arranged between the connecting cylinder 8 and the valve core 3.
The valve body 1 is of a through structure, an inner hollow cylinder 1-1 is arranged in the right side of the valve body 1, threaded holes are formed in the left end and the right end of the valve body 1, the threaded holes in the left side are used for being in threaded connection with a connecting cylinder 8, and the threaded holes in the right side 1-2 are used for being in threaded connection with a connector of an input device. The outer periphery of the hollow cylinder 1-1, the inner periphery of the valve body 1 and the inner wall of the valve body 1 form an accommodating cavity in a surrounding mode. The periphery of the hollow cylinder 1-1 is in a step shape, and a first step surface and a second step surface are arranged from the left to the outside. The left end face of the first step face is a sealing end face. The valve body 1 is provided with vent holes 1-3, one end of each vent hole 1-3 is communicated with the atmosphere, the other end of each vent hole 1-3 is communicated with the containing cavity, and the vent holes 1-3 regulate the air pressure change generated when the valve core 3 slides.
As shown in figure 4, a valve core retainer ring 3-1 is arranged on the left side of a valve core 3, a valve core through hole 3-2 is formed in the right side of the valve core 3, a throttling hole 3-11 is formed in the valve core retainer ring 3-1, the valve core through hole 3-2 is communicated with the throttling hole 3-11, a valve body 1 is coaxial with the valve core 3, the inner periphery of the valve core through hole 3-2 is matched with a second step surface on the outer periphery of an inner hollow cylinder 1-1, the inner periphery of the valve core through hole 3-2 slides along the outer periphery of the inner hollow cylinder 1-1, the distance from the inner periphery of a sealing end face to an axis is smaller than the minimum distance from an overflowing hole to the axis, and the throttling hole 3-11 can be separated from the inner hollow cylinder 1-1 by the sealing end face. The hole wall of the left end of the valve core through hole 3-2 is a first stress surface, and the left end surface of the valve core 3 is a second stress surface.
As shown in FIG. 3, in the present embodiment, 4 orifices 3-11 are uniformly distributed on the spool retainer ring 3-1.
The spring 2 is positioned in the accommodating cavity, the spring 2 is sleeved on the periphery of the valve core through hole 3-2, the right end of the spring is abutted against the right inner wall of the valve body 1, and the left end of the spring is abutted against the valve core retainer ring 3-1.
The periphery of the connecting cylinder 8 is provided with a thread structure for connecting the left inner thread of the valve body 1; the connecting cylinder 8 is provided with an internal thread hole and a connecting cylinder hole in the middle through external internal communication, the internal thread hole is used for connecting output equipment, and the connecting cylinder hole is used for passing through a medium.
The periphery of the valve seat 6 is provided with steps which are matched with the steps on the inner periphery of the valve body 1, the valve seat 6 is limited in right movement, the left end face of the valve seat 6 is tightly attached to the connecting cylinder 8, and the valve seat 6 is limited in left movement. A valve seat hole is formed in the valve seat 6 for passing a medium. The valve seat hole is of a step structure.
As shown in fig. 5, the first sealing ring 4 is sleeved on the second step surface and used for sealing between the valve body 1 and the valve core 3, a sealing ring groove is arranged on the periphery of the valve core retainer ring 3-1, the second sealing ring 5 is installed in the sealing ring groove and used for sealing between the valve core 3 and the valve body 1, and the third sealing ring 7 is installed on the left end surface of the valve seat 6 and used for sealing between the valve seat 6 and the connecting cylinder 8 to prevent medium leakage.
The working process of the invention is as follows:
when the device is used, high-pressure fluid flows in from a hollow cylinder 1-1 at the left end part of a valve body 1, the high-pressure fluid is decompressed through a throttling hole 3-11 of a valve core 3 and flows to an outlet of a connecting cylinder 8 end part connecting cylinder hole and an internal thread hole through a valve seat hole, at the moment, the pressure acting area is large due to the low outlet pressure, the valve core 3 is balanced under the combined action of the inlet pressure and a spring 2, when the outlet pressure is increased, the pressure of a second stress surface is increased, the valve core 3 moves towards the direction of a boss in the valve body 1, the distance between a valve core retainer ring 3-1 and a sealing end surface is reduced, a medium entering the throttling hole 3-11 is reduced, the decompression effect is increased, the outlet pressure is reduced, when the outlet pressure is overhigh, the force borne by the second stress surface of the valve core 3 is large enough, the valve core retainer ring 3-1 can be tightly attached to the sealing end surface, and the throttling hole 3-11 is isolated from the hollow cylinder 1-1, the hydraulic system is protected.
In summary, the following steps: the utility model provides a take high pressure self-closing protect function's relief pressure valve, cup joint through case and the inside boss of valve body, and one side of case is provided with the spring, the case can slide along the inside boss of valve body, it makes this device can be under the different condition of this valve entry and outlet pressure, realize automatically regulated, when outlet pressure is too high, can make the case paste the inside boss of valve body and accomplish and block, it has simple structure, low cost, can realize the self-regulation, advantage safe in utilization, among the current hydraulic system has been solved, when the regulating power of required step-down effect surpasses the relief pressure valve, the self-regulation can not be accomplished or close and protect hydraulic system to the relief pressure valve, lead to that hydraulic system to appear insensitive, the precision reduces, the problem of damage even.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. The pressure reducing valve with the high-pressure automatic closing protection function is characterized by comprising a valve body (1), a valve core (3) is arranged in the valve body (1) in a sliding mode, a spring (2) is arranged between the valve body (1) and the valve core (3), one end of the valve body (1) is connected with a connecting cylinder (8), and a valve seat (6) is arranged between the connecting cylinder (8) and the valve core (3).
2. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 1, wherein the valve body (1) is of a through structure, an inner hollow cylinder (1-1) is arranged in the right side of the valve body (1), threaded holes are formed in the left end and the right end of the valve body (1), an accommodating cavity is defined by the outer periphery of the inner hollow cylinder (1-1), the inner periphery of the valve body (1) and the inner wall of the valve body (1), the outer periphery of the inner hollow cylinder (1-1) is in a step shape, a first step surface and a second step surface are arranged from the left outside, the left end surface of the first step surface is a sealing end surface, an exhaust hole (1-3) is formed in the valve body (1), one end of the exhaust hole (1-3) is communicated with the atmosphere, and the other end of the exhaust hole is communicated with the accommodating cavity.
3. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 1, wherein a valve core retainer ring (3-1) is arranged on the left side of the valve core (3), a valve core through hole (3-2) is formed in the right side of the valve core (3), an orifice (3-11) is formed in the valve core retainer ring (3-1), the valve core through hole (3-2) is communicated with the orifice (3-11), and the orifice (3-11) can be isolated from the inner hollow cylinder (1-1) by a sealing end face.
4. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 3, wherein the valve body (1) is coaxial with the valve core (3), the inner periphery of the valve core through hole (3-2) is matched with the second step surface of the outer periphery of the inner hollow cylinder (1-1), the inner periphery of the valve core through hole (3-2) slides along the outer periphery of the inner hollow cylinder (1-1), and the distance from the inner periphery of the sealing end surface to the shaft center is smaller than the minimum distance from the overflowing hole to the shaft center.
5. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 3, wherein the wall of the left end hole of the valve core through hole (3-2) is a first stress surface, and the left end surface of the valve core (3) is a second stress surface.
6. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 3, wherein the valve core retainer ring (3-1) is evenly provided with (4) throttling holes (3-11).
7. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 2, wherein the spring (2) is located in the accommodating cavity, the spring (2) is sleeved on the periphery of the valve core through hole (3-2), the right end of the spring abuts against the right inner wall of the valve body (1), and the left end of the spring abuts against the valve core retainer ring (3-1).
8. The pressure reducing valve with high pressure automatic closing protection function according to claim 1, wherein the connecting cylinder (8) is provided with a thread structure at the periphery, and the connecting cylinder (8) is provided with an internal thread hole and a connecting cylinder hole at the middle part by external internal communication.
9. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 1, wherein a step is arranged on the periphery of the valve seat (6), the left end face of the valve seat (6) is tightly attached to the connecting cylinder (8), and a valve seat hole is formed in the valve seat (6).
10. The pressure reducing valve with the high-pressure automatic closing protection function according to claim 2, wherein the first sealing ring (4) is sleeved on the second step surface, and the third sealing ring (7) is installed on the left end surface of the valve seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111082121.1A CN114060338A (en) | 2021-09-15 | 2021-09-15 | Pressure reducing valve with high-pressure automatic closing protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111082121.1A CN114060338A (en) | 2021-09-15 | 2021-09-15 | Pressure reducing valve with high-pressure automatic closing protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114060338A true CN114060338A (en) | 2022-02-18 |
Family
ID=80233746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111082121.1A Pending CN114060338A (en) | 2021-09-15 | 2021-09-15 | Pressure reducing valve with high-pressure automatic closing protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114060338A (en) |
-
2021
- 2021-09-15 CN CN202111082121.1A patent/CN114060338A/en active Pending
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