CN113565816B - safety valve - Google Patents
safety valve Download PDFInfo
- Publication number
- CN113565816B CN113565816B CN202110720114.3A CN202110720114A CN113565816B CN 113565816 B CN113565816 B CN 113565816B CN 202110720114 A CN202110720114 A CN 202110720114A CN 113565816 B CN113565816 B CN 113565816B
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- Prior art keywords
- reset
- liquid inlet
- chamber
- valve core
- section
- Prior art date
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- 239000007788 liquid Substances 0.000 claims abstract description 99
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- F15B13/024—Pressure relief valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a safety valve, which comprises a shell, a valve core and a reset piece, wherein a cavity is arranged in the shell, a liquid inlet channel and a liquid outlet channel are arranged on the shell, the axial position of the valve core along the cavity is adjustable, the valve core is provided with a first position and a second position, the first position is used for cutting off the liquid inlet channel and the liquid outlet channel, the second position is used for communicating the liquid inlet channel and the liquid outlet channel, the valve core is provided with a first end facing the liquid inlet channel, the first end is provided with a protruding part and a ring groove, the reset piece is arranged in the cavity, the reset piece is abutted against the second end of the valve core, and the reset piece is used for resetting the valve core from the second position to the first position. The safety valve has the characteristics of small opening overshoot pressure, simple structure, stable flow, safety and reliability.
Description
Technical Field
The invention relates to the technical field of hydraulic control valves, in particular to a safety valve.
Background
The safety valve is an automatic pressure relief device driven by medium pressure and is used for limiting the pressure of a hydraulic system not to exceed the safety pressure of the system.
Disclosure of Invention
The present invention has been made based on the findings and knowledge of the inventors regarding the following facts and problems:
under the condition that the inlet pressure of the safety valve is fixed, the flow of the safety valve is mainly determined by the opening degree of the valve core, namely, the larger the opening degree of the valve core is, the larger the flow passing through the safety valve is. Because the valve core opening power is completely provided by the inlet hydraulic pressure, in the valve core opening process, the valve core opening overflow reaches the valve core opening degree, so that the requirement of nominal flow can be met, the inlet pressure needs to be increased by a certain amount, and the increment of the inlet pressure is called as opening overshoot pressure. If the opening overshoot pressure is too high, the safety valve and the hydraulic pressure born by the hydraulic system where the safety valve is positioned are increased, so that the safety of the hydraulic system is not facilitated. In practical use, higher inlet hydraulic pressure is often required to increase the valve core opening, thereby increasing the relief valve flow. Thus increasing the overshoot pressure of the relief valve, which is detrimental to the safety of the hydraulic system.
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides the safety valve which is small in opening overshoot pressure, stable in liquid discharge, safe and reliable.
The safety valve comprises a shell, a valve core and a reset piece, wherein a cavity is arranged in the shell, a liquid inlet channel and a liquid outlet channel are arranged on the shell, the cavity is communicated between the liquid inlet channel and the liquid outlet channel, the valve core is arranged in the cavity, the axial position of the valve core along the cavity is adjustable, the valve core is provided with a first position and a second position, the valve core cuts off the liquid inlet channel and the liquid outlet channel in the first position, the valve core is communicated with the liquid inlet channel in the second position, the valve core is provided with a first end facing the liquid inlet channel, the first end is provided with a protruding part and a ring groove, at least part of the protruding part is used for being inserted into the liquid inlet channel in a sealing mode when the valve core is in the first position so as to realize separation between the liquid inlet channel and the cavity, the opening of the ring groove faces the liquid inlet channel, the ring groove surrounds the outer peripheral side of the protruding part, the reset piece is arranged in the cavity, and the reset piece is communicated with the second end of the valve core, and the reset piece is used for resetting the valve core from the second position to the first position.
The safety valve provided by the embodiment of the invention has the characteristics of small opening overshoot pressure, simple structure, stable flow, safety and reliability.
In some embodiments, the first end of the valve spool is provided with an annular flange surrounding an outer peripheral side of the protruding portion, and the ring groove is formed between the protruding portion and the annular flange.
In some embodiments, in the first position, at least part of the outer peripheral wall of the annular flange seals off the inlet of the liquid outlet channel.
In some embodiments, a length dimension of the projection along the chamber axial direction is greater than a length dimension of the annular flange along the chamber axial direction.
In some embodiments, a pressure stabilizing hole is provided in the protruding portion, an opening of the pressure stabilizing hole faces the liquid inlet channel, and the pressure stabilizing hole extends along a central axis of the valve core.
In some embodiments, the safety valve further comprises a pressure regulating plug, the pressure regulating plug is arranged in the cavity, the reset piece is arranged between the valve core and the pressure regulating plug, and the axial position of the pressure regulating plug along the cavity is adjustable so as to realize the adjustment of the reset acting force of the reset piece.
In some embodiments, the relief valve further comprises a reset seat, the chamber comprises a first section and a second section, the diameter size of the first section is smaller than the diameter size of the second section, the valve core is in guiding fit in the first section, the reset member and the reset seat are in guiding fit in the second section, and the reset seat is located between the valve core and the reset member, and the diameter size of the reset seat is larger than the diameter size of the first section.
In some embodiments, the reset seat is provided with a first protrusion, the pressure regulating plug is provided with a second protrusion, the reset element is a spring, one end of the reset element is sleeved on the outer circumferential side of the first protrusion, and the other end of the reset element is sleeved on the outer circumferential side of the second protrusion.
In some embodiments, the housing comprises a first housing and a second housing threadably connected, a first section of the chamber being formed within the first housing, a second section of the chamber being formed within the second housing, and the pressure regulating plug being threadably mounted within the second housing.
In some embodiments, the housing further comprises a limiting plug, and the liquid inlet channel is disposed in the limiting plug.
Drawings
Fig. 1 is a schematic structural view of a safety valve according to an embodiment of the present invention.
Reference numerals:
the valve comprises a shell 1, a chamber 11, a first section 111, a second section 112, a liquid inlet channel 12, a liquid outlet channel 13, a first shell 14, a second shell 15, a valve seat 16, a valve core 2, a first end 21, a protrusion 211, a pressure stabilizing hole 2111, an annular groove 22, an annular flange 23, a reset piece 3, a pressure regulating plug 4, a second protrusion 41, a reset seat 5, a first protrusion 51 and a limiting plug 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A relief valve according to an embodiment of the present invention is described below with reference to fig. 1.
The safety valve according to the embodiment of the present invention includes a housing 1, a spool 2, and a reset member 3.
The shell 1 is internally provided with a cavity 11, the shell 1 is provided with a liquid inlet channel 12 and a liquid outlet channel 13, and the cavity 11 is communicated between the liquid inlet channel 12 and the liquid outlet channel 13.
As shown in fig. 1, a liquid inlet channel 12 is arranged at the left side of the shell 1, the liquid inlet channel 12 extends along the left-right direction, a liquid outlet channel 13 is also arranged on the shell 1, a chamber 11 is arranged between the liquid outlet channel 13 and the liquid inlet channel 12, and liquid flows out from the liquid outlet channel 13 after entering the chamber 11 through the liquid inlet channel 12.
The valve core 2 is arranged in the chamber 11, the axial position of the valve core 2 along the chamber 11 is adjustable, the valve core 2 has a first position and a second position, the valve core 2 cuts off the liquid inlet channel 12 and the liquid outlet channel 13 in the first position, the liquid inlet channel 12 and the liquid outlet channel 13 are communicated in the second position, the valve core 2 has a first end 21 facing the liquid inlet channel 12, the first end 21 is provided with a protruding part 211 and a ring groove 22, at least part of the protruding part 211 is used for being inserted into the liquid inlet channel 12 in a sealing way when the valve core 2 is in the first position so as to realize separation of the liquid inlet channel 12 and the chamber 11, the opening of the ring groove 22 faces the liquid inlet channel 12, and the ring groove 22 surrounds the outer periphery side of the protruding part 211.
As shown in fig. 1, the valve core 2 is disposed in the chamber 11, the valve core 2 can move left and right in the chamber 11, the valve core 2 has a first position at the left end of the chamber 11, when the valve core 2 is in the first position, the liquid inlet channel 12 and the liquid outlet channel 13 are both cut off by the valve core 2, liquid cannot flow in from the liquid inlet channel 12 and cannot flow out from the liquid outlet channel 13, the valve core 2 moves right in the chamber 11 for a certain distance to have a second position, when the valve core 2 is in the second position, the liquid flows into the chamber 11 from the liquid inlet channel 12 and flows out from the liquid outlet channel 13, the first end 21 of the valve core 2 is a left end, a protruding part 211 is disposed at the left end, the left end of the protruding part 211 can be inserted into the liquid inlet channel 12 when the valve core 2 is in the first position, the liquid inlet channel 12 is closed, a valve seat 16 is disposed in the chamber 11, the left end of the valve seat 16 is abutted against the right end of the protruding part 211 of the valve core 2, and an inclined plane is disposed at the abutting part for reducing abrasion of the safety valve, the service life of the safety valve is improved, when the periphery of the protruding part 211 is surrounded by the left opening 22, and the left 22 flows out of the annular groove 22, when the liquid passes through the liquid outlet channel 13, the annular groove 2 is stable, and the pressure of the valve core can bear force.
The reset piece 3 is arranged in the cavity 11, the reset piece 3 is abutted against the second end of the valve core 2, and the reset piece 3 is used for resetting the valve core 2 from the second position to the first position.
As shown in fig. 1, the second end of the valve core 2 is the right end of the valve core 2, the right end of the valve core 2 is abutted against the reset member 3, and the reset member 3 wants the valve core 2 to provide a leftward reset force to reset the valve core 2 from the second position to the first position.
According to the safety valve provided by the embodiment of the invention, the annular groove 22 is arranged on the end face of the valve core 2 at the liquid outlet channel 13 to stabilize the liquid pressure, and the reset piece 3 is arranged to reset the valve core 2, so that the regulation of the pressure at the liquid inlet channel 12 and the control of the liquid outlet flow are completed, and the safety valve has the characteristics of small opening overshoot pressure, simple structure, stable flow, safety and reliability.
In some embodiments, the first end 21 of the valve spool 2 is provided with an annular flange 23, the annular flange 23 surrounding the outer peripheral side of the protrusion 211, and the annular groove 22 is formed between the protrusion 211 and the annular flange 23.
As shown in fig. 1, an annular flange 23 is further provided on the outer periphery of the protruding portion 211, the outer peripheral surface of the annular flange 23 is flush with the outer peripheral surface of the valve core 2 and contacts with the inner peripheral surface of the chamber 11, the inner peripheral surface of the annular flange 23 is opposite to the outer peripheral surface of the protruding portion 211 and forms an annular groove 22 at intervals, when the valve core 2 moves leftwards to the first position, the protruding portion 211 closes the liquid inlet channel 12, the annular flange 23 closes the liquid outlet channel 13, when the valve core 2 moves rightwards, the protruding portion 211 moves rightwards with the valve core 2, the liquid inlet channel 12 is opened, the annular flange 23 moves rightwards with the valve core 2, the liquid outlet channel 13 is opened, the liquid flows into the chamber 11 from the liquid inlet channel 12, the liquid flows out of the chamber 11 from the liquid outlet channel 13 and the flow rate changes with the speed of rightwards movement of the valve core 2.
In some embodiments, in the first position, at least part of the outer circumferential wall of the annular flange 23 seals off the inlet of the liquid channel 13.
As shown in fig. 1, the outer peripheral surface of the annular flange 23 is in contact with the inner peripheral surface of the chamber 11, a portion of the left end of the annular flange 23 coincides with the inlet of the closed liquid outlet channel 13, and when the spool 2 is in the first position, a portion of the left end of the annular flange 23 closes the inlet of the liquid outlet channel 13, and when the spool 2 moves rightward, the annular flange 23 moves rightward, and the inlet of the liquid outlet channel 13 is opened, thereby controlling the flow rate of the liquid flowing out of the liquid outlet channel 13.
In some embodiments, the length dimension of the projection 211 along the axial direction of the chamber 11 is greater than the length dimension of the annular flange 23 along the axial direction of the chamber 11.
As shown in fig. 1, the length dimension of the protruding portion 211 in the left-right direction is larger than the length dimension of the annular flange 23 in the left-right direction, in other words, when the left end of the annular flange 23 is stopped against the housing 1, the left end of the protruding portion 211 is inserted into the liquid inlet passage 12, thereby ensuring that the annular flange 23 simultaneously closes the liquid outlet passage 13 when the protruding portion 211 closes the liquid inlet passage 12, so as to prevent safety accidents.
In some embodiments, the protrusion 211 is provided with a stabilizing hole 2111 therein, the opening of the stabilizing hole 2111 faces the intake passage 12, and the stabilizing hole 2111 extends along the central axis of the valve spool 2.
As shown in fig. 1, a stabilizing hole 2111 extending left and right is provided at the central axis of the protrusion 211, and when the stabilizing hole 2111 opens leftwards, the stabilizing hole 2111 can guide the liquid pressure along the central axis of the protrusion 211, preventing the liquid pressure from deflecting and damaging the valve core 2 and the housing 1.
In some embodiments, the safety valve further includes a pressure regulating plug 4, the pressure regulating plug 4 is disposed in the chamber 11, the reset member 3 is disposed between the valve core 2 and the pressure regulating plug 4, and an axial position of the pressure regulating plug 4 along the chamber 11 is adjustable to achieve adjustment of a reset force of the reset member 3.
As shown in fig. 1, the right end of the chamber 11 is further provided with a pressure regulating plug 4, a reset piece 3 is arranged between the pressure regulating plug 4 and the valve core 2, the pressure regulating plug 4 is a pressure regulating plug and is in threaded fit in the chamber 11, the pressure regulating plug can move left and right in the chamber 11 through rotation, when the pressure regulating plug moves rightwards, the reset acting force of the reset piece 3 is reduced, and when the pressure regulating plug moves leftwards, the reset acting force of the reset piece 3 is increased.
In some embodiments, the safety valve further comprises a reset seat 5, the chamber 11 comprises a first section 111 and a second section 112, the diameter size of the first section 111 is smaller than the diameter size of the second section 112, the valve core 2 is in guiding fit in the first section 111, the reset member 3 and the reset seat 5 are in guiding fit in the second section 112, the reset seat 5 is located between the valve core 2 and the reset member 3, and the diameter size of the reset seat 5 is larger than the diameter size of the first section 111.
As shown in fig. 1, the left end of the chamber 11 is a first section 111, the valve core 2 is in guiding fit in the first section 111, the right end is a second section 112, the reset piece 3 and the reset seat 5 are in guiding fit in the second section 112, the diameter of the first section 111 is smaller than that of the second section 112 to form a step part, the reset seat 5 is arranged in the chamber 11, the diameter of the reset seat 5 is larger than that of the first section 111, the left end of the reset seat 5 is abutted on the step part, and the reset piece 3 and the reset seat 5 are prevented from moving leftwards into the first section 111.
In some embodiments, the reset seat 5 is provided with a first protrusion 51, the pressure regulating plug 4 is provided with a second protrusion 41, the reset element 3 is a spring, one end of the reset element 3 is sleeved on the outer peripheral side of the first protrusion 51, and the other end of the reset element 3 is sleeved on the outer peripheral side of the second protrusion 41.
As shown in fig. 1, a first protrusion 51 is arranged on the right end face of the reset seat 5, a second protrusion 41 is arranged on the left end face of the pressure regulating plug 4, a reset piece 3 is arranged between the first protrusion 51 and the second protrusion 41, the reset piece 3 is a spring, the left end of the spring is sleeved on the outer peripheral face of the first protrusion 51, and the right end of the spring is sleeved on the outer peripheral face of the second protrusion 41, so that deflection cannot occur in the compression or extension process of the spring, and the spring has the characteristics of high safety and simple structure.
In some embodiments, the housing 1 comprises a first housing 14 and a second housing 15 that are threadedly connected, a first section 111 of the chamber 11 being formed in the first housing 14, a second section 112 of the chamber 11 being formed in the second housing 15, and the pressure regulating plug 4 being threadedly mounted in the second housing 15.
As shown in fig. 1, the casing 1 is divided into a first casing 14 and a second casing 15, the first casing 14 is located at the left end, the second casing 15 is located at the right end, the first casing 14 and the second casing 15 are connected through threads, a first section 111 of the cavity 11 is formed in the first casing 14, a second section 112 of the cavity 11 is formed in the second casing 15, the right end of the second casing 15 is connected with the pressure regulating plug 4 through threads, and the casing 1 is formed by the first casing 14 and the second casing 15.
In some embodiments, the housing 1 further comprises a stopper plug 6, and the liquid inlet channel 12 is provided in the stopper plug 6.
As shown in fig. 1, a limiting plug 6 is arranged at the left end of the housing 1, a through hole is arranged in the center of the limiting plug 6, the diameter of the through hole is the same as that of the liquid inlet channel 12, the right end face of the limiting plug 6 is abutted against the left end of the valve seat 16, and the valve seat 16 is prevented from moving leftwards, so that accidents caused by excessive leftward movement of the valve core 2 in the process of resetting the valve core 2 from the second position to the first position by the resetting piece 5 are prevented, and the safety of the safety valve is improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. A safety valve, comprising:
the device comprises a shell, wherein a cavity is arranged in the shell, a liquid inlet channel and a liquid outlet channel are arranged on the shell, and the cavity is communicated between the liquid inlet channel and the liquid outlet channel;
a spool provided in the chamber, the spool being adjustable in axial position along the chamber and having a first position in which the spool cuts off the liquid inlet passage and the liquid outlet passage, and a second position in which the liquid inlet passage and the liquid outlet passage communicate, the spool having a first end facing the liquid inlet passage, the first end being provided with a projection for sealing insertion into the liquid inlet passage when the spool is in the first position to achieve separation of the liquid inlet passage and the chamber, a ring groove and an annular flange, at least part of the projection being for sealing insertion into the liquid inlet passage to achieve separation of the liquid inlet passage and the chamber, the annular flange closing the liquid outlet passage in synchronization, an opening of the ring groove facing the liquid inlet passage, and the ring groove surrounding an outer peripheral side of the projection, the annular flange surrounding an outer peripheral side of the projection, the ring groove being formed between the projection and the annular flange, an outer peripheral surface of the annular flange being flush with an outer peripheral surface of the spool and in contact with an inner peripheral surface of the chamber, the annular flange being formed with an opposing peripheral surface of the ring groove;
the reset piece is arranged in the cavity, the reset piece is abutted to the second end of the valve core, and the reset piece is used for resetting the valve core from the second position to the first position.
2. The safety valve according to claim 1, wherein in the first position at least part of the outer peripheral wall of the annular flange seals off the inlet of the liquid outlet channel.
3. The safety valve according to claim 1, wherein a length dimension of the projection along the chamber axial direction is greater than a length dimension of the annular flange along the chamber axial direction.
4. The relief valve of claim 1, wherein a pressure stabilizing hole is provided in the boss, an opening of the pressure stabilizing hole being directed toward the liquid inlet passage, the pressure stabilizing hole extending along a central axis of the valve spool.
5. The safety valve according to claim 1, further comprising a pressure regulating plug disposed in the chamber, the reset member disposed between the valve core and the pressure regulating plug, the axial position of the pressure regulating plug along the chamber being adjustable to effect adjustment of the reset force of the reset member.
6. The safety valve of claim 5, further comprising a reset seat, wherein the chamber comprises a first section and a second section, the first section having a smaller diameter than the second section, the spool guide fits within the first section, the reset member and the reset seat guide fit within the second section, and the reset seat is located between the spool and the reset member, the reset seat having a larger diameter than the first section.
7. The safety valve according to claim 6, wherein the reset seat is provided with a first protrusion, the pressure regulating plug is provided with a second protrusion, the reset element is a spring, one end of the reset element is sleeved on the outer circumferential side of the first protrusion, and the other end of the reset element is sleeved on the outer circumferential side of the second protrusion.
8. The safety valve according to claim 6, wherein the housing comprises a first housing and a second housing threadably connected, a first section of the chamber being formed in the first housing, a second section of the chamber being formed in the second housing, the pressure regulating plug being threadably mounted in the second housing.
9. The safety valve according to any one of claims 1-8, wherein the housing further comprises a stopper plug, the liquid inlet channel being provided within the stopper plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110720114.3A CN113565816B (en) | 2021-06-28 | 2021-06-28 | safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110720114.3A CN113565816B (en) | 2021-06-28 | 2021-06-28 | safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113565816A CN113565816A (en) | 2021-10-29 |
| CN113565816B true CN113565816B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110720114.3A Active CN113565816B (en) | 2021-06-28 | 2021-06-28 | safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113565816B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831620A (en) * | 1972-04-12 | 1974-08-27 | Caterpillar Tractor Co | Valve disabling device |
| CN205503597U (en) * | 2016-03-02 | 2016-08-24 | 杭州力龙液压有限公司 | Buffering formula overflow valve and hydraulic system |
| CN112555469A (en) * | 2020-11-11 | 2021-03-26 | 北京天地玛珂电液控制系统有限公司 | Constant specific pressure large flow safety valve |
-
2021
- 2021-06-28 CN CN202110720114.3A patent/CN113565816B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3831620A (en) * | 1972-04-12 | 1974-08-27 | Caterpillar Tractor Co | Valve disabling device |
| CN205503597U (en) * | 2016-03-02 | 2016-08-24 | 杭州力龙液压有限公司 | Buffering formula overflow valve and hydraulic system |
| CN112555469A (en) * | 2020-11-11 | 2021-03-26 | 北京天地玛珂电液控制系统有限公司 | Constant specific pressure large flow safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113565816A (en) | 2021-10-29 |
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Address after: 101399 No. 27, Linhe Avenue, Shunyi District, Beijing Applicant after: CCTEG Beijing Tianma Intelligent Control Technology Co.,Ltd. Applicant after: BEIJING CCRI-TIANMA AUTOMATION TECHNOLOGY Co.,Ltd. Address before: 101399 No. 27, Linhe Avenue, Shunyi District, Beijing Applicant before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. Applicant before: BEIJING CCRI-TIANMA AUTOMATION TECHNOLOGY Co.,Ltd. |
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