CN111089094B - Pressure release valve with adjusting device capable of suppressing squeaking - Google Patents

Pressure release valve with adjusting device capable of suppressing squeaking Download PDF

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Publication number
CN111089094B
CN111089094B CN201911364051.1A CN201911364051A CN111089094B CN 111089094 B CN111089094 B CN 111089094B CN 201911364051 A CN201911364051 A CN 201911364051A CN 111089094 B CN111089094 B CN 111089094B
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China
Prior art keywords
valve
valve body
spring
adjusting
pressure
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CN201911364051.1A
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CN111089094A (en
Inventor
邱海灵
胡庆刚
贾宸
张嘉睿
袁侃辉
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AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
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AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
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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
    • F15B13/024—Pressure relief valves

Abstract

The invention belongs to the field of hydraulic engineering, and relates to a pressure relief valve with an adjusting device and capable of inhibiting squeal, wherein a spring (10) is sleeved on a valve core (6), a spring seat (2) is sleeved on the spring (10), the spring seat (2), the spring (10) and the valve core (6) are arranged in a valve body (5), and a valve seat (11) is inserted into the valve body (5) and is in contact positioning with the valve body (5) through a raised end face; the adjusting stud (9) is screwed into the valve body (5) through threads and is in contact with the left end of the valve core (6), the adjusting gasket (7) and the adjusting stud (9) form gear internal meshing, and the inner hexagonal socket head cap screw (8) is screwed into the valve body (5) through a through hole of the adjusting gasket (7) so as to restrict the rotational freedom degree of the adjusting stud (9) and the adjusting gasket (7) along the thread direction. The invention has reliable structure and simple and convenient pressure adjustment.

Description

Pressure release valve with adjusting device capable of suppressing squeaking
Technical Field
The invention belongs to the field of hydraulic engineering, and relates to a pressure relief valve with an adjusting device and capable of inhibiting squeal.
Background
In the pressure relief valve used in the past, high-pressure oil flows out through a gap between a spring seat and a valve body after passing through a steel ball, the local pressure difference is large, the squeaking phenomenon is obvious, and the steel ball has an oscillation phenomenon to influence the service performance; and the adjustment mode of the opening pressure of the steel ball is complex, the interval of the adjustment pressure is large, the precision is low, and the use is not easy.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a pressure release valve with an adjusting device capable of inhibiting squeaking, which is characterized in that in the design of the pressure release valve, squeaking inhibition and opening pressure accurate adjustment of the pressure release valve during working are realized by reasonably arranging the positions of oil through holes and using an adjusting stud, a gear internal meshing gasket and a screw in a combined manner, and the pressure release valve is reliable in structure and simple and convenient in pressure adjustment.
The technical scheme adopted by the invention is as follows:
a pressure release valve with an adjusting device and capable of inhibiting squeal comprises a spring seat 2, a valve body 5, a valve core 6, an adjusting gasket 7, an inner hexagonal socket head screw 8, an adjusting stud 9, a spring 10 and a valve seat 11;
the spring 10 is sleeved on the valve core 6, the spring seat 2 is sleeved on the spring 10, the spring seat 2, the spring 10 and the valve core 6 are installed in the valve body 5, and the valve seat 11 is inserted into the valve body 5 and is in contact positioning with the valve body 5 through a raised end face;
the adjusting stud 9 is screwed into the valve body 5 through threads and is in contact with the left end of the valve core 6, the adjusting gasket 7 and the adjusting stud 9 form gear internal meshing, and the inner hexagonal socket head cap screw 8 is screwed into the valve body 5 through a through hole of the adjusting gasket 7 so as to restrict the rotational freedom degree of the adjusting stud 9 and the adjusting gasket 7 along the thread direction.
The valve element 6 and the valve body 5 are sealed by a seal ring 3.
The seal ring 3 is protected by a protective ring 4.
In the initial state, the steel ball 1 is clamped in a groove formed by the spring seat 2 and the valve seat 11 under the action of the pre-pressure of the spring 10.
When system pressure rose, inside high-pressure oil return got into the relief valve through the oilhole to act on steel ball 1, when this effort was greater than spring 10's effort, steel ball 1 moved left, and fluid gets into the relief valve, and wherein most fluid flows to the oilhole on the valve body 5 through the oilhole on spring holder 2 earlier, and the oilhole on the valve body 5 is flowed to through the clearance of spring holder 2 with valve body 5 to a small part fluid in addition, and the pressure release to the system is accomplished jointly to above two way fluid.
When the pressure relief valve is used, the precompression quantity of the spring 10 is adjusted by adjusting the length of the adjusting stud 9 screwed into the valve body 5, so that the opening pressure of the steel ball 1 is adjusted, threaded holes with different angles are drilled in the valve body 5, and the inner hexagonal socket head cap screws 8 are screwed into different threaded holes in the valve body 5 to achieve accurate adjustment.
The included angles in the circumferential direction of the threaded holes are respectively 117 degrees, 120 degrees and 123 degrees, and the number of teeth meshed with the adjusting stud 9 and the adjusting gasket 7 is 40.
The precise adjustment of the 3-degree interval is realized by screwing the socket cap screws 8 into different threaded holes in the valve body 5.
The invention has the beneficial effects that:
according to the invention, a plurality of oil holes are uniformly distributed on the spring seat 2, after the steel ball 1 is opened, most of oil flows out of the pressure release valve through the oil holes on the spring seat 2, primary damping is added between the steel ball 1 and the oil hole of the pressure release valve, and the local pressure difference is reduced, so that the squeaking inhibiting effect is achieved. And (4) pressure characteristics.
According to the invention, the precompression amount of the spring 10 can be adjusted by adjusting the length of the adjusting stud 9 screwed into the valve body 5, so as to adjust the opening pressure of the steel ball 1, threaded holes with different angles are drilled on the valve body 5, the included angles among the threaded holes are respectively 117 degrees, 120 degrees and 123 degrees, and the number of teeth meshed with the adjusting stud 9 and the adjusting shim 7 is 40, so that the accurate adjustment of the 3-degree interval can be realized by screwing 8 into different threaded holes in the valve body 5.
Drawings
FIG. 1: the structure of the relief valve with an adjusting device can inhibit squeal.
The device comprises a steel ball 1, a spring seat 2, a sealing ring 3, a protection ring 4, a valve body 5, a valve core 6, an adjusting gasket 7, a hexagon socket head cap screw 8, an adjusting stud 9, a spring 10 and a valve seat 11.
FIG. 2: a schematic view of the fine tuning holes.
Detailed Description
The invention is described in further detail below with reference to the drawings.
The structure of the pressure relief valve with the adjusting device for suppressing the squeal is shown in fig. 1. The device comprises a steel ball 1, a spring seat 2, a sealing ring 3, a protective ring 4, a valve body 5, a valve core 6, an adjusting gasket 7, an inner hexagonal socket head screw 8, an adjusting stud 9, a spring 10 and a valve seat 11; the adjusting stud 9 is screwed into the valve body 5 through threads and is contacted with the left end of the valve core 6, the adjusting gasket 7 and the adjusting stud 9 form gear internal meshing, and the inner hexagonal socket head cap screw 8 is screwed into the valve body 5 through a through hole of the adjusting gasket 7.
The working principle is as follows: when the pressure of the system rises, the internal high-pressure return oil enters the pressure release valve through the oil hole and acts on the steel ball 1, when the acting force is larger than the acting force of the spring 10, the steel ball 1 moves leftwards, and oil enters the pressure release valve, wherein most of the oil flows to the oil hole on the valve body 5 through the oil hole on the spring seat 2, namely, primary damping is added between the oil return oil of the system and the oil hole of the pressure release valve, so that the local pressure difference is reduced, the squeal inhibiting effect is achieved, in addition, a small part of the oil flows to the oil hole on the valve body 5 through the gap between the spring seat 2 and the valve body 5, and the two oil paths jointly complete the pressure release of the system.
When the pressure relief valve is used, the precompression quantity of the spring 10 can be adjusted by adjusting the length of the adjusting stud 9 screwed into the valve body 5, so as to adjust the opening pressure of the steel ball 1, threaded holes with different angles are drilled on the adjusting stud 5, as shown in fig. 2, the included angles in the circumferential direction of the threaded holes are respectively 117 degrees, 120 degrees and 123 degrees, and the number of teeth meshed with the adjusting stud 9 and the adjusting gasket 7 is 40, so that the accurate adjustment of the interval of 3 degrees can be realized by screwing 8 into different threaded holes in the valve body 5.

Claims (3)

1. A pressure release valve with an adjusting device and capable of inhibiting squeal is characterized by comprising a spring seat (2), a valve body (5), a valve core (6), an adjusting gasket (7), an inner hexagonal socket head cap screw (8), an adjusting stud (9), a spring (10) and a valve seat (11);
the spring (10) is sleeved on the valve core (6), the spring seat (2) is sleeved on the spring (10), the spring seat (2), the spring (10) and the valve core (6) are installed in the valve body (5), and the valve seat (11) is inserted into the valve body (5) and is in contact positioning with the valve body (5) through the raised end face;
the adjusting stud (9) is screwed into the valve body (5) through threads and is in contact with the left end of the valve core (6), the adjusting gasket (7) and the adjusting stud (9) form gear internal meshing, and the inner hexagonal socket head cap screw (8) is screwed into the valve body (5) through a through hole of the adjusting gasket (7) so as to restrict the rotational freedom degree of the adjusting stud (9) and the adjusting gasket (7) along the thread direction;
in an initial state, the steel ball (1) is clamped in a groove formed by the spring seat (2) and the valve seat (11) under the action of the pre-pressure of the spring (10);
when the pressure of the system rises, internal high-pressure return oil enters the pressure release valve through the oil hole and acts on the steel ball (1), when the acting force is larger than the acting force of the spring (10), the steel ball (1) moves leftwards, oil liquid enters the pressure release valve, most of the oil liquid flows to the oil hole in the valve body (5) through the oil hole in the spring seat (2), a small part of the oil liquid flows to the oil hole in the valve body (5) through the gap between the spring seat (2) and the valve body (5), and the two oil liquids jointly complete the pressure release of the system;
when the pressure relief valve is used, the precompression quantity of a spring (10) is adjusted by adjusting the length of an adjusting stud (9) screwed into a valve body (5) so as to adjust the opening pressure of a steel ball (1), threaded holes with different angles are drilled on the valve body (5), the included angles in the circumferential direction of the threaded holes are respectively 117 degrees, 120 degrees and 123 degrees, the number of teeth meshed with the adjusting stud (9) and an adjusting gasket (7) is 40, and the accurate adjustment of the 3-degree interval is realized by screwing an inner hexagonal cylindrical head screw (8) into different threaded holes in the valve body (5).
2. A pressure relief valve with an adjustment device to suppress squeal as claimed in claim 1 characterised in that the valve spool (6) and valve body (5) are sealed by a sealing ring (3).
3. A pressure relief valve with an adjustment device for squeal suppression according to claim 2, characterized in that the sealing ring (3) is protected by a protective ring (4).
CN201911364051.1A 2019-12-25 2019-12-25 Pressure release valve with adjusting device capable of suppressing squeaking Active CN111089094B (en)

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CN201911364051.1A CN111089094B (en) 2019-12-25 2019-12-25 Pressure release valve with adjusting device capable of suppressing squeaking

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Application Number Priority Date Filing Date Title
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CN111089094B true CN111089094B (en) 2022-05-13

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Publication number Priority date Publication date Assignee Title
CN111464930B (en) * 2020-05-12 2022-02-25 歌尔智能科技有限公司 Howling detection method and device for earphone and storage medium
CN112503221A (en) * 2020-11-26 2021-03-16 常州市旺杰动力科技有限公司 Engine pressure release valve with good sealing effect

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US1815784A (en) * 1927-01-19 1931-07-21 Gen Electric Winding head for filament mounting machines
GB819873A (en) * 1955-02-15 1959-09-09 Citroen Sa Andre Improvements in and relating to hydraulic control devices for changing speeds in drive transmission systems, mainly applicable to drive transmission systems, of automobile vehicles
JPS571807A (en) * 1980-06-04 1982-01-07 Hitachi Ltd Hydraulic servo-valve
CN2212117Y (en) * 1995-02-27 1995-11-08 大连理工大学 Leakageless full open gas bottle pressure discharging valve
CN1563764A (en) * 2004-04-16 2005-01-12 华中科技大学 Middle high pressure directly-acting hydraulic overflow valve
CN201166172Y (en) * 2008-03-10 2008-12-17 周华安 Ultra-decompression pilot valve for petroleum natural gas well head safe cut-off control
CN201420717Y (en) * 2009-05-12 2010-03-10 上海华岛液压设备制造有限公司 Overflow valve
CN201889732U (en) * 2010-09-27 2011-07-06 河南柴油机重工有限责任公司 Angle indicating device
CN202901414U (en) * 2012-11-12 2013-04-24 黄晓东 Novel pressure release valve
CN103291679A (en) * 2013-06-04 2013-09-11 浙江大学 Low-hysteresis overflow valve
CN104019258A (en) * 2014-06-26 2014-09-03 华中科技大学无锡研究院 Double-damping direct-acting type hydraulic pressure overflowing valve
CN104985448A (en) * 2015-06-12 2015-10-21 陕西宝成航空仪表有限责任公司 Follower rest used for slender shaft finish machining

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Publication number Priority date Publication date Assignee Title
CN203723893U (en) * 2014-02-11 2014-07-23 九阳股份有限公司 Non-self-resetting pressure release valve and pressure cooking utensil with same

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815784A (en) * 1927-01-19 1931-07-21 Gen Electric Winding head for filament mounting machines
GB819873A (en) * 1955-02-15 1959-09-09 Citroen Sa Andre Improvements in and relating to hydraulic control devices for changing speeds in drive transmission systems, mainly applicable to drive transmission systems, of automobile vehicles
JPS571807A (en) * 1980-06-04 1982-01-07 Hitachi Ltd Hydraulic servo-valve
CN2212117Y (en) * 1995-02-27 1995-11-08 大连理工大学 Leakageless full open gas bottle pressure discharging valve
CN1563764A (en) * 2004-04-16 2005-01-12 华中科技大学 Middle high pressure directly-acting hydraulic overflow valve
CN201166172Y (en) * 2008-03-10 2008-12-17 周华安 Ultra-decompression pilot valve for petroleum natural gas well head safe cut-off control
CN201420717Y (en) * 2009-05-12 2010-03-10 上海华岛液压设备制造有限公司 Overflow valve
CN201889732U (en) * 2010-09-27 2011-07-06 河南柴油机重工有限责任公司 Angle indicating device
CN202901414U (en) * 2012-11-12 2013-04-24 黄晓东 Novel pressure release valve
CN103291679A (en) * 2013-06-04 2013-09-11 浙江大学 Low-hysteresis overflow valve
CN104019258A (en) * 2014-06-26 2014-09-03 华中科技大学无锡研究院 Double-damping direct-acting type hydraulic pressure overflowing valve
CN104985448A (en) * 2015-06-12 2015-10-21 陕西宝成航空仪表有限责任公司 Follower rest used for slender shaft finish machining

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