CN115899341B - Absolute pressure reducing valve with automatic air suction function - Google Patents
Absolute pressure reducing valve with automatic air suction function Download PDFInfo
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- CN115899341B CN115899341B CN202310171050.5A CN202310171050A CN115899341B CN 115899341 B CN115899341 B CN 115899341B CN 202310171050 A CN202310171050 A CN 202310171050A CN 115899341 B CN115899341 B CN 115899341B
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Abstract
The invention discloses an absolute pressure reducing valve with an automatic air suction function, which comprises a shell, an air suction valve assembly and a main valve assembly, wherein a vacuum corrugated pipe is arranged in an inner cavity of the shell, the lower end of the vacuum corrugated pipe is fixedly connected with a guide pillar, the main valve assembly is arranged at the lower end of the shell, the main valve assembly comprises a valve guide sleeve, a main valve and a lower end cover, the valve guide sleeve is arranged in a lower port of the shell, the main valve is in sliding connection with the valve guide sleeve, the lower end cover is in threaded connection with the lower port of the shell to fix the valve guide sleeve, the lower end of the guide pillar penetrates through the main valve, the guide pillar is connected with the main valve through a fixing assembly, and the left side and the right side of the middle part of the shell are respectively provided with an outlet and an inlet; the device can stably output gas with certain pressure when bleed air exists, and is not influenced by atmospheric pressure in the use process; when no bleed air exists, the bleed air can be automatically sucked from the atmosphere under the suction effect of the compressor.
Description
Technical Field
The invention relates to the technical field of absolute pressure reducing valves, in particular to an absolute pressure reducing valve with an automatic air suction function.
Background
Pressure reducing valves are of a wide variety, but are often used in surface equipment; the prior common pressure reducing valve is provided with an inlet and an outlet, and the bleed air passes through the pressure reducing valve and then outputs gas with stable pressure; the pressure sensing cavity of the common pressure reducing valve is communicated with the atmosphere, and the output pressure can be changed along with the change of the flying height of the aircraft.
With the improvement of integration of products used by domestic aircraft, the function requirement of the pressure reducing valve is more and more strict, and the pressure reducing valve is required to output certain gas under the condition of no bleed air. And the influence of the atmospheric pressure on the product is required to be considered, so that the output pressure of the product is not changed along with the atmospheric pressure change, and the absolute pressure reducing valve with the automatic air suction function is provided for solving the problems.
Disclosure of Invention
The invention aims to overcome the existing defects and provide the absolute pressure reducing valve with an automatic air suction function, and the vacuum bellows is used as a pressure sensing element to ensure the long-term reliability of the vacuum degree of the vacuum chamber; after the output pressure is set, the output pressure is kept constant without being influenced by the input pressure; when bleed air exists, the bleed air is utilized to work, and when no bleed air exists, the bleed air is automatically sucked from the atmosphere to work; the method is applicable to the ground and high-altitude environments at the same time, and can effectively solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an absolute pressure relief valve of function of breathing in automatically in area, includes casing, valve subassembly and main valve subassembly of breathing in, be provided with the vacuum bellows in the inner chamber of casing, the lower extreme fixedly connected with guide pillar of vacuum bellows, main valve subassembly is installed in the lower extreme of casing, and main valve subassembly includes valve uide bushing, main valve and lower extreme cover, and valve uide bushing is installed in the lower port of casing, main valve and valve uide bushing sliding connection, the lower extreme spiro union is fixed valve uide bushing on the lower port of casing, and the lower extreme of guide pillar passes main valve, and the guide pillar is connected with main valve through fixed subassembly, and casing middle part left and right sides is provided with export and import respectively, and both sides are provided with the bleed air import respectively around the casing middle part, and the valve subassembly of breathing in is installed in the bleed air import respectively.
Further, the upper end of casing is provided with the bush, is provided with pressure regulating spring between bush and the guide pillar, and the top of bush is provided with the closing cap, through the fix with screw between closing cap and the upper end of casing, be provided with sealed pad between closing cap and the casing.
Further, the air suction valve assembly comprises an air suction plug screw, an air suction filter screen, a spring I, a spring seat I, an air suction valve seat and an air suction valve, wherein the air suction valve seat is arranged in the air suction inlet and is fixed through the air suction plug screw, the air suction filter screen is arranged between the air suction valve seat and the air suction plug screw, the air suction valve is in sliding connection with the air suction valve seat, the spring seat I is in sliding connection with the inner wall of the air suction valve, and the spring I is arranged on two sides of the spring seat I.
Furthermore, an inlet pipe joint is arranged on the inlet on the right side of the shell, and a conical filter element is arranged in the inlet pipe joint.
Further, a spring seat II is fixed on the inner wall of the main valve, and a spring II is arranged between the spring seat II and the lower end cover.
Further, the fixing component comprises a ball nut and a ball, the ball penetrates through the guide post, a gasket is arranged between the ball and the guide post, the ball nut is in threaded connection with the guide post, and the ball nut are matched up and down to fixedly connect the guide post with the main valve.
Compared with the prior art, the invention has the beneficial effects that:
the device can stably output gas with certain pressure when bleed air exists, and is not influenced by atmospheric pressure in the use process; when no bleed air exists, the bleed air can be automatically sucked from the atmosphere under the suction effect of the compressor; the vacuum bellows is suitable for the ground and high-altitude environment, and is used as a pressure sensing element, so that the long-term reliability of the vacuum degree of the inner cavity of the valve body is ensured.
Drawings
FIG. 1 is a schematic cross-sectional view of an inlet pipe joint in a fully opened state of a valve when bleed air exists in the invention;
FIG. 2 is a schematic cross-sectional view of the suction valve in the fully opened state of the valve with bleed air according to the present invention;
FIG. 3 is a schematic cross-sectional view of the inlet pipe joint in a state of reduced opening of the valve when bleed air is present in the invention;
fig. 4 is a schematic sectional view of the suction valve in a state that the opening degree of the valve is reduced when there is bleed air in the present invention.
In the figure: the sealing device comprises a sealing cover 1, a sealing gasket 2, a casing 3, a pressure regulating spring 4, a lower end cover 5, a main valve 6, a ball nut 7, a guide pillar 8, a ball 9, a gasket 10, a valve guide sleeve 11, an inlet pipe joint 12, a vacuum bellows 13, a bushing 14, a suction screw plug 15, a suction filter screen 16, a spring I17, a spring seat I18, a suction valve seat 19, a suction valve 20, a spring II 21, a spring seat II 22 and a screw 23.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an absolute pressure relief valve of automatic function of breathing in area, including casing 3, the valve subassembly of breathing in and main valve subassembly, be provided with vacuum bellows 13 in the inner chamber of casing 3, use vacuum bellows 13 as the pressure sensing component, do not receive temperature, flying height etc. external environmental factor influence, can be applicable to ground and high altitude environment simultaneously, the lower extreme fixedly connected with guide pillar 8 of vacuum bellows 13, main valve subassembly installs the lower extreme at casing 3, main valve subassembly includes valve uide bushing 11, main valve 6 and lower extreme cover 5, valve uide bushing 11 installs in the lower port of casing 3, be provided with the sealing member between valve uide bushing 11 and casing 3 and the lower extreme cover 5 respectively, sealing member selects for use sealing washer, main valve 6 and valve uide bushing 11 sliding connection, main valve 6 can reciprocate at valve uide bushing 11, when main valve 6 is full open, there is 0.5 mm's circulation clearance between main valve 6 and the casing 3, lower extreme cover 5 spiro union is fixed with uide bushing 11 on the lower extreme of casing 3, main valve 6's inner wall upper fixed with II 22, main valve 6 is provided with II 22 and casing 3 upper and lower extreme cover 21, the air inlet 21 is provided with the air inlet 21 to the air inlet, the air inlet is provided with the air inlet 12 respectively, the air inlet is provided with the air inlet 21, the air inlet is provided with the air inlet 3, the air inlet is provided with the air inlet 21, the air inlet is connected to the main valve 3, the intake is provided with the air inlet 3, the intake 12, the intake is provided with the air inlet 12, the air inlet 3, the intake is provided with the air intake 12, the air intake 3, the intake is outside.
The upper end of casing 3 is provided with bush 14, is provided with pressure regulating spring 4 between bush 14 and the guide pillar 8, and the inner chamber of casing 3 receives different pressures, drives main valve 6 through guide pillar 8 under the combined action of pressure regulating spring 4 and vacuum bellows 13 and removes the regulation that realizes pressure, and the top of bush 14 is provided with closing cap 1, fixes through screw 23 between closing cap 1 and the upper end of casing 3, is provided with sealing gasket 2 between closing cap 1 and the casing 3, fixes casing 3 upper end through closing cap 1 to through sealing gasket 2 seal, guarantee that casing 3 upper port seals tightly.
The air suction valve assembly comprises an air suction screw plug 15, an air suction filter screen 16, springs I17, a spring seat I18, an air suction valve seat 19 and an air suction valve 20, wherein the air suction valve seat 19 is arranged in an air suction inlet and is fixed through the air suction screw plug 15, the air suction filter screen 16 is arranged between the air suction valve seat 19 and the air suction screw plug 15, air entering the shell 3 can be filtered through the air suction filter screen 16 to ensure air cleaning, the air suction valve 20 is in sliding connection with the air suction valve seat 19, the spring seat I18 is in sliding connection with the inner wall of the air suction valve 20, the springs I17 are arranged on two sides of the spring seat I18, the other end of the spring I17 on the left side is abutted against the left side of the air suction valve 20, and the spring I17 on the right side is abutted against the shell 3; due to the difference between the inside and outside of the housing 3, the left spring i 17 is compressed to start opening the suction valve 20 when the suction valve 20 is opened by the atmospheric pressure, and when the force of the left spring i 17 is larger than that of the right spring i 17, the right spring i 17 is further opened by the compression valve until the front end of the suction valve 20 abuts against the housing 3, and the suction valve 20 reaches the opening maximum position.
The fixing component comprises a ball nut 7 and a ball 9, the ball 9 penetrates through the guide post 8, a gasket 10 is arranged between the ball 9 and the guide post 8, the ball nut 7 is in threaded connection with the guide post 8, and the ball 9 and the ball nut 7 are matched up and down to fixedly connect the guide post 8 with the main valve 6.
When the bleed air exists, the air enters the valve body, the outlet pressure acts on the vacuum bellows 13, and when the outlet pressure is smaller than a set value, the pressure is acted by the downward force of the pressure regulating spring 4 and the vacuum bellows 13; the main valve 6 is positioned at the maximum opening position, the opening value is 0.5mm, and the full flow of gas passes through; when the outlet pressure is larger than a set value, the air pressure overcomes the elasticity of the pressure regulating spring 4 and the vacuum bellows 13, the main valve 6 is driven to move upwards through the spring II 21, the opening of the valve port is reduced by 0.3mm, the pressure reducing effect is achieved, and the air suction valve assembly is closed under the action of the pressure.
When no bleed air exists, the air suction valve 20 is kept in an open state under the action of the spring I17, the air suction valve is switched to an atmospheric interface, the compressor works, a product outlet generates vacuum degree, air enters the valve body from the air suction valve assembly, the outlet pressure acts on the vacuum bellows 13, and when the outlet pressure is smaller than a set value, the air suction valve is under the downward force of the pressure regulating spring 4 and the vacuum bellows 13; the air suction valve component is fully opened, and the air passes through at full flow rate; when the outlet pressure is larger than the set value, the air pressure overcomes the elasticity of the pressure regulating spring 4 and the vacuum bellows 13, the main valve 6 moves upwards, the opening of the valve port is reduced, and the pressure reducing effect is achieved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a take absolute pressure relief pressure valve of automatic function of breathing in, includes casing (3), valve subassembly and main valve subassembly of breathing in, its characterized in that: the vacuum bellows (13) is arranged in the inner cavity of the shell (3), the lower end of the vacuum bellows (13) is fixedly connected with the guide post (8), the main valve assembly is arranged at the lower end of the shell (3), the main valve assembly comprises a valve guide sleeve (11), a main valve (6) and a lower end cover (5), the valve guide sleeve (11) is arranged in the lower port of the shell (3), the main valve (6) is in sliding connection with the valve guide sleeve (11), the lower end cover (5) is in threaded connection with the lower port of the shell (3) to fix the valve guide sleeve (11), the lower end of the guide post (8) penetrates through the main valve (6), the guide post (8) is connected with the main valve (6) through a fixing assembly, the left side and the right side of the middle of the shell (3) are respectively provided with an outlet and an inlet, the front side and the rear side of the middle of the shell (3) are respectively provided with an inlet, the air suction assembly is respectively arranged in an air suction air bleed inlet, the air suction valve assembly comprises an air suction screw plug (15), an air suction filter screen (16), a spring I (17), an air suction seat (19) and an air suction seat (19) are arranged in the air bleed seat (19) and the air suction seat (19) and the air bleed seat (19) are fixedly arranged between the air suction valve (15), the air suction valve (20) is in sliding connection with the air suction valve seat (19), the spring seat I (18) is in sliding connection with the inner wall of the air suction valve (20), and the springs I (17) are arranged on two sides of the spring seat I (18).
2. An absolute pressure reducing valve with automatic air suction function according to claim 1, wherein: the upper end of casing (3) is provided with bush (14), is provided with pressure regulating spring (4) between bush (14) and guide pillar (8), and the top of bush (14) is provided with closing cap (1), is fixed through screw (23) between closing cap (1) and the upper end of casing (3), be provided with sealed pad (2) between closing cap (1) and casing (3).
3. An absolute pressure reducing valve with automatic air suction function according to claim 1, wherein: an inlet pipe joint (12) is arranged on the inlet on the right side of the shell (3), and a conical filter element is arranged in the inlet pipe joint (12).
4. An absolute pressure reducing valve with automatic air suction function according to claim 1, wherein: a spring seat II (22) is fixed on the inner wall of the main valve (6), and a spring II (21) is arranged between the spring seat II (22) and the lower end cover (5).
5. An absolute pressure reducing valve with automatic air suction function according to claim 1, wherein: the fixing assembly comprises a ball nut (7) and a ball (9), the ball (9) is penetrated on the guide post (8), a gasket (10) is arranged between the ball (9) and the guide post (8), the ball nut (7) is in threaded connection with the guide post (8), and the ball (9) is matched with the ball nut (7) up and down to fixedly connect the guide post (8) with the main valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310171050.5A CN115899341B (en) | 2023-02-27 | 2023-02-27 | Absolute pressure reducing valve with automatic air suction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310171050.5A CN115899341B (en) | 2023-02-27 | 2023-02-27 | Absolute pressure reducing valve with automatic air suction function |
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| Publication Number | Publication Date |
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| CN115899341A CN115899341A (en) | 2023-04-04 |
| CN115899341B true CN115899341B (en) | 2023-05-09 |
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| CN202310171050.5A Active CN115899341B (en) | 2023-02-27 | 2023-02-27 | Absolute pressure reducing valve with automatic air suction function |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526393A (en) * | 2016-01-29 | 2016-04-27 | 成都康拓兴业科技有限责任公司 | Automatic flow regulating device for airborne oxygen production equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1605782A (en) * | 2004-11-02 | 2005-04-13 | 佛山市南海永兴阀门制造有限公司 | Regorging prevention automatic water inlet valve |
| JP2012017774A (en) * | 2010-07-06 | 2012-01-26 | Tokiko Techno Kk | Back pressure valve |
| JP6042631B2 (en) * | 2012-04-27 | 2016-12-14 | 株式会社テイエルブイ | Pressure reducing valve |
| CN204420295U (en) * | 2014-12-11 | 2015-06-24 | 太原航空仪表有限公司 | A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure |
| CN205401852U (en) * | 2016-03-18 | 2016-07-27 | 湖北航天化学技术研究所 | One -level pressure relief device for rebreather |
| CN107606240A (en) * | 2017-10-20 | 2018-01-19 | 新乡市华航航空液压设备有限公司 | A kind of high-precision voltage stabilizing combination valve |
| CN109323027B (en) * | 2018-11-28 | 2020-07-14 | 北京控制工程研究所 | Diaphragm capsule subassembly and absolute pressure formula pressure reducer |
| CN210034560U (en) * | 2019-04-26 | 2020-02-07 | 沈阳航天新光集团有限公司 | Pressure reducing module of gas circuit system |
| CN112747156B (en) * | 2021-01-12 | 2022-10-14 | 北京卫星制造厂有限公司 | High-precision large-pressure-reduction-ratio automatic pressure-regulating gas pressure-stabilizing pressure-reducing combined valve |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526393A (en) * | 2016-01-29 | 2016-04-27 | 成都康拓兴业科技有限责任公司 | Automatic flow regulating device for airborne oxygen production equipment |
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