CN112811396B - Airborne electric control pneumatic device - Google Patents
Airborne electric control pneumatic device Download PDFInfo
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- CN112811396B CN112811396B CN202110024909.0A CN202110024909A CN112811396B CN 112811396 B CN112811396 B CN 112811396B CN 202110024909 A CN202110024909 A CN 202110024909A CN 112811396 B CN112811396 B CN 112811396B
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- air inlet
- exhaust
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0001—Separation or purification processing
- C01B2210/0009—Physical processing
- C01B2210/0014—Physical processing by adsorption in solids
Abstract
The invention discloses an airborne electric control pneumatic device, which belongs to the technology of preparing oxygen and nitrogen by air separation, and comprises a base (1) and an upper cover (2), and is characterized in that the electric control pneumatic device consists of an air inlet valve and an air exhaust valve which are arranged in the base (1) and the upper cover (2), a two-position three-way electromagnetic valve (9), a first flow limiting hole (10) and a second flow limiting hole (11); the invention provides an airborne electronic control pneumatic device which has the advantages of simple structure, small volume, light weight, low power consumption and high efficiency and meets the use requirements of airborne oxygen-nitrogen separation systems of a plurality of adsorption towers.
Description
Technical Field
The invention belongs to the technology of preparing oxygen and nitrogen by air separation, and relates to an improvement of an airborne electric control pneumatic device.
Background
The principle adopted in the design technology for preparing oxygen and nitrogen by air separation on the airplane is the pressure swing adsorption principle to separate oxygen and nitrogen, and the silicate molecular sieve is adopted to adsorb the nitrogen in the air to separate the oxygen, so that the oxygen is supplied to a pilot for breathing and is used for protection and lifesaving; the carbon molecular sieve is adopted to adsorb oxygen in air to separate nitrogen and supply the nitrogen to a fuel tank for fire prevention and explosion prevention of an airplane, no matter which adsorbent is adopted in the adsorption principle, an electric control pneumatic device is required to be adopted, at present, two adsorption towers with molecular sieves are generally adopted, in the pressure swing adsorption process, one adsorption tower adsorbs to generate required gas, the other adsorption tower desorbs at reduced pressure, and the two adsorption towers alternately work; the electric control pneumatic device is a motor driving a rotary valve. See U.S. patent No. 3.948.286, which has the following disadvantages: the structure is complicated, the volume is large, the weight is heavy, the required rotating torque is large, the efficiency of the motor is low, and the power consumption is large. Moreover, the rotary valve is not suitable for use in an on-board oxygen-nitrogen separation system with a plurality of adsorption towers.
Disclosure of Invention
The purpose of the invention is: the airborne electric control pneumatic device has the advantages of simple structure, small volume, light weight, low power consumption, high efficiency and suitability for molecular sieve machine oxygen-nitrogen separation systems of a plurality of adsorption towers.
The technical scheme of the invention is as follows: an airborne electric control pneumatic device comprises a base 1 and an upper cover 2, wherein the base 1 and the upper cover 2 are connected into a whole through screws, and the base 1 is provided with an air inlet 1a, an adsorption tower opening 1b and an air outlet 1 c; the device is characterized in that the electric control pneumatic device consists of an air inlet valve and an air outlet valve which are arranged in a base 1 and an upper cover 2, a two-position three-way electromagnetic valve 9, a first flow limiting hole 10 and a second flow limiting hole 11; the base 1 and the upper cover 2 are rectangular plates, the air inlet valve is positioned in the right inner cavities of the base 1 and the upper cover 2, the exhaust valve is positioned in the left inner cavities of the base 1 and the upper cover 2, and the structures of the air inlet valve and the exhaust valve are bilaterally symmetrical; the air inlet valve consists of a base 1, the right half part of an upper cover 2 and an air inlet assembly arranged in the inner cavity of the right side; a first air inlet cavity 1n formed by a circular hole in a right-angled broken line shape is arranged on the right side of a base 1, a vertical section of the first air inlet cavity 1n is opened in the center of the plate surface of the upper surface of the right half part of the base 1, a horizontal section of the first air inlet cavity 1n is opened on the right end surface of the base 1, the horizontal section of the first air inlet cavity 1n is opened as an air inlet 1a, the vertical section and the horizontal section of the first air inlet cavity 1n are communicated in the base 1, an air inlet valve annular groove 1d coaxial with the upper end opening is arranged on the upper surface of the base 1 and outside the upper end opening of the vertical section of the first air inlet cavity 1n, an annular ring between the upper end opening of the vertical section of the first air inlet cavity 1n and the air inlet valve annular groove 1d forms an air inlet valve seat 1e of the air inlet valve, an arc groove with the same inner and outer radius as the air inlet valve annular groove 1d is arranged on the groove bottom of the air inlet valve annular groove 1d close to the central part of the base 1, the arc groove is a second air inlet cavity 1m of the air inlet valve; an air inlet valve control cavity 2e formed by a circular groove is arranged at the position, corresponding to the air inlet valve annular groove 1d, on the right side of the lower surface of the upper cover 2, the inner diameter of the air inlet valve control cavity 2e is the same as the maximum inner diameter of the air inlet valve annular groove 1d, and the air inlet valve control cavity 2e on the upper cover 2, the first air inlet cavity 1n, the air inlet valve annular groove 1d and the second air inlet cavity 1m on the base 1 jointly form a right inner cavity of the base 1 and the upper cover 2; the air inlet assembly consists of an air inlet diaphragm 3, an air inlet valve spring 4 and an air inlet limiting ring 5, wherein the air inlet diaphragm 3 is a rubber wafer with a circular bulge at the peripheral part and a hard core at the central part, the cross section of the circular bulge is in an inverted U shape, the circular edge of the air inlet diaphragm 3 is clamped between the step end surface of an air inlet step groove of the base 1 and the lower end surface of an air inlet annular boss of the upper cover 2, the air inlet valve spring 4 is positioned in an air inlet valve control cavity 2e, the large-diameter upper end of the air inlet valve spring 4 is propped against the concave spring seat at the bottom of the air inlet valve control cavity 2e, the small-diameter lower end of the air inlet valve spring 4 is propped against the central part of the upper surface of the air inlet diaphragm 3, and the air inlet limiting ring 5 is a member formed by connecting the lower part of an upper ring 5b with a lower rectangular cross section through the upper surface, the outer diameter of the lower ring 5a is larger than that of the upper ring 5b, the outer diameter of the lower ring 5a is in interference fit with a middle section hole of the air inlet step groove of the base 1, and the upper ring 5b of the air inlet limiting ring 5 is positioned in an inner cavity of the circular bulge of the air inlet diaphragm 3; an air inlet valve control cavity air inlet 2a communicated with an air inlet valve control cavity 2e is formed in the upper cover 2, the air inlet valve control cavity air inlet 2a is communicated with one end of a first flow limiting hole 10 through a pipeline, the other end of the first flow limiting hole 10 is communicated with an air inlet 1a on the base 1 through a pipeline, an air inlet valve control cavity air outlet 2c communicated with the air inlet valve control cavity 2e is formed in the upper cover 2, the air inlet valve control cavity air outlet 2c is communicated with a first air inlet 9a of a two-position three-way electromagnetic valve 9 through a pipeline, an air outlet 9c of the two-position three-way electromagnetic valve 9 is communicated with the atmosphere, and the drift diameter of the first flow limiting hole 10 is smaller than the drift diameter between the first air inlet 9a and the air outlet 9c of the two-position three-way electromagnetic valve 9; the exhaust valve consists of a left half part of the base 1 and the upper cover 2 and an exhaust component arranged in an inner cavity on the left side; a second exhaust cavity 1h formed by circular holes in a right-angled broken line shape is arranged on the left side of the base 1, the vertical section of the second exhaust cavity 1h is opened at the center of the plate surface of the upper surface of the left half part of the base 1, the horizontal section of the second exhaust cavity 1h is opened at the left end surface of the base 1, the horizontal section of the second exhaust cavity 1h is opened as an exhaust port 1c, the vertical section and the horizontal section of the second exhaust cavity 1h are communicated in the base 1, an exhaust valve annular groove 1f coaxial with the upper port is arranged on the upper surface of the base 1 and outside the upper port of the vertical section of the second exhaust cavity 1h, a circular ring between the upper port of the vertical section of the second exhaust cavity 1h and the exhaust valve annular groove 1f forms a valve seat 1g of the exhaust valve, a circular groove with the same inner and outer radius as the exhaust valve annular groove 1f is arranged on the groove bottom of the exhaust valve annular groove 1f close to the central part of the base 1, the arc groove is a first exhaust cavity 1j of the exhaust valve; an exhaust valve control cavity 2f formed by a circular groove is arranged on the left side of the lower surface of the upper cover 2 and at a position corresponding to an exhaust valve annular groove 1f of the base 1, the inner diameter of the exhaust valve control cavity 2f is the same as the maximum inner diameter of the exhaust valve annular groove 1f, and the exhaust valve control cavity 2f on the upper cover 2, a second exhaust cavity 1h, the exhaust valve annular groove 1f and a first exhaust cavity 1j on the base 1 jointly form a left inner cavity of the base 1 and an upper cover 2; the exhaust assembly comprises an exhaust diaphragm 6, an exhaust valve spring 7 and an exhaust limiting ring 8, wherein the exhaust diaphragm 6 is a rubber wafer with a circular bulge on the periphery and a hard core on the center, the section of the circular bulge is in an inverted U shape, the circular edge of the exhaust diaphragm 6 is clamped between the step end surface of an exhaust step groove of the base 1 and the lower end surface of an exhaust annular boss of the upper cover 2, the exhaust valve spring 7 is positioned in an exhaust valve control cavity 2f, the upper end of the large diameter of the exhaust valve spring 7 is propped in a concave spring seat at the bottom of the exhaust valve control cavity 2f, the lower end of the small diameter of the exhaust valve spring 7 is propped against the center part of the upper surface of the exhaust diaphragm 6, the exhaust limiting ring 8 is a member formed by connecting the lower part of an upper ring 8b with a circular section on the upper surface and the upper surface of a lower ring 8a with a rectangular section in a penetrating manner, and the outer diameter of the lower ring 8a is larger than the outer diameter of the upper ring 8b, the outer diameter of the lower ring 8a is in interference fit with the middle section hole of the exhaust step groove of the base 1, and the upper ring 8b of the exhaust limiting ring 8 is positioned in the inner cavity of the circular bulge of the exhaust diaphragm 6; an exhaust valve control cavity air inlet 2b communicated with an exhaust valve control cavity 2f is formed in the upper cover 2, the exhaust valve control cavity air inlet 2b is communicated with one end of a second flow limiting hole 11 through a pipeline, the other end of the second flow limiting hole 11 is communicated with an air inlet 1a in the base 1 through a pipeline, an exhaust valve control cavity air outlet 2d communicated with the exhaust valve control cavity 2f is formed in the upper cover 2, the exhaust valve control cavity air outlet 2d is communicated with a second air inlet 9b of the two-position three-way electromagnetic valve 9 through a pipeline, and the drift diameter of the second flow limiting hole 11 is smaller than the drift diameter between the second air inlet 9b and the air outlet 9c of the two-position three-way electromagnetic valve 9; a channel 1k for communicating the second air inlet cavity 1m with the first air exhaust cavity 1j is arranged on the base 1, an adsorption tower port 1b is positioned in the center of the lower surface of the base 1, and the adsorption tower port 1b is communicated with the channel 1 k.
The invention has the advantages that: the airborne electronic control pneumatic device has the advantages of simple structure, small volume, light weight, low power consumption and high efficiency, and meets the use requirements of airborne oxygen-nitrogen separation systems of a plurality of adsorption towers.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the intake limiting ring 5 of the present invention.
Fig. 3 is a schematic structural view of the exhaust stopper ring 8 of the present invention.
Detailed Description
The present invention is described in further detail below. Referring to fig. 1, 2 and 3, an airborne electronic control pneumatic device comprises a base 1 and an upper cover 2, wherein the base 1 and the upper cover 2 are connected into a whole through screws, and the base 1 is provided with an air inlet 1a, an adsorption tower opening 1b and an air outlet 1 c; the device is characterized in that the electric control pneumatic device consists of an air inlet valve and an air outlet valve which are arranged in a base 1 and an upper cover 2, a two-position three-way electromagnetic valve 9, a first flow limiting hole 10 and a second flow limiting hole 11; the base 1 and the upper cover 2 are rectangular plates, the air inlet valve is positioned in the right inner cavities of the base 1 and the upper cover 2, the exhaust valve is positioned in the left inner cavities of the base 1 and the upper cover 2, and the structures of the air inlet valve and the exhaust valve are bilaterally symmetrical; the air inlet valve consists of a base 1, the right half part of an upper cover 2 and an air inlet assembly arranged in the inner cavity of the right side; a first air inlet cavity 1n formed by a circular hole in a right-angled broken line shape is arranged on the right side of a base 1, a vertical section of the first air inlet cavity 1n is opened in the center of the plate surface of the upper surface of the right half part of the base 1, a horizontal section of the first air inlet cavity 1n is opened on the right end surface of the base 1, the horizontal section of the first air inlet cavity 1n is opened as an air inlet 1a, the vertical section and the horizontal section of the first air inlet cavity 1n are communicated in the base 1, an air inlet valve annular groove 1d coaxial with the upper end opening is arranged on the upper surface of the base 1 and outside the upper end opening of the vertical section of the first air inlet cavity 1n, an annular ring between the upper end opening of the vertical section of the first air inlet cavity 1n and the air inlet valve annular groove 1d forms an air inlet valve seat 1e of the air inlet valve, an arc groove with the same inner and outer radius as the air inlet valve annular groove 1d is arranged on the groove bottom of the air inlet valve annular groove 1d close to the central part of the base 1, the arc groove is a second air inlet cavity 1m of the air inlet valve; an air inlet valve control cavity 2e formed by a circular groove is arranged at the position, corresponding to the air inlet valve annular groove 1d, on the right side of the lower surface of the upper cover 2, the inner diameter of the air inlet valve control cavity 2e is the same as the maximum inner diameter of the air inlet valve annular groove 1d, and the air inlet valve control cavity 2e on the upper cover 2, the first air inlet cavity 1n, the air inlet valve annular groove 1d and the second air inlet cavity 1m on the base 1 jointly form a right inner cavity of the base 1 and the upper cover 2; the air inlet assembly consists of an air inlet diaphragm 3, an air inlet valve spring 4 and an air inlet limiting ring 5, wherein the air inlet diaphragm 3 is a rubber wafer with a circular bulge at the peripheral part and a hard core at the central part, the cross section of the circular bulge is in an inverted U shape, the circular edge of the air inlet diaphragm 3 is clamped between the step end surface of an air inlet step groove of the base 1 and the lower end surface of an air inlet annular boss of the upper cover 2, the air inlet valve spring 4 is positioned in an air inlet valve control cavity 2e, the large-diameter upper end of the air inlet valve spring 4 is propped against the concave spring seat at the bottom of the air inlet valve control cavity 2e, the small-diameter lower end of the air inlet valve spring 4 is propped against the central part of the upper surface of the air inlet diaphragm 3, and the air inlet limiting ring 5 is a member formed by connecting the lower part of an upper ring 5b with a lower rectangular cross section through the upper surface, the outer diameter of the lower ring 5a is larger than that of the upper ring 5b, the outer diameter of the lower ring 5a is in interference fit with a middle section hole of the air inlet step groove of the base 1, and the upper ring 5b of the air inlet limiting ring 5 is positioned in an inner cavity of the circular bulge of the air inlet diaphragm 3; an air inlet valve control cavity air inlet 2a communicated with an air inlet valve control cavity 2e is formed in the upper cover 2, the air inlet valve control cavity air inlet 2a is communicated with one end of a first flow limiting hole 10 through a pipeline, the other end of the first flow limiting hole 10 is communicated with an air inlet 1a on the base 1 through a pipeline, an air inlet valve control cavity air outlet 2c communicated with the air inlet valve control cavity 2e is formed in the upper cover 2, the air inlet valve control cavity air outlet 2c is communicated with a first air inlet 9a of a two-position three-way electromagnetic valve 9 through a pipeline, an air outlet 9c of the two-position three-way electromagnetic valve 9 is communicated with the atmosphere, and the drift diameter of the first flow limiting hole 10 is smaller than the drift diameter between the first air inlet 9a and the air outlet 9c of the two-position three-way electromagnetic valve 9; the exhaust valve consists of a left half part of the base 1 and the upper cover 2 and an exhaust component arranged in an inner cavity on the left side; a second exhaust cavity 1h formed by circular holes in a right-angled broken line shape is arranged on the left side of the base 1, the vertical section of the second exhaust cavity 1h is opened at the center of the plate surface of the upper surface of the left half part of the base 1, the horizontal section of the second exhaust cavity 1h is opened at the left end surface of the base 1, the horizontal section of the second exhaust cavity 1h is opened as an exhaust port 1c, the vertical section and the horizontal section of the second exhaust cavity 1h are communicated in the base 1, an exhaust valve annular groove 1f coaxial with the upper port is arranged on the upper surface of the base 1 and outside the upper port of the vertical section of the second exhaust cavity 1h, a circular ring between the upper port of the vertical section of the second exhaust cavity 1h and the exhaust valve annular groove 1f forms a valve seat 1g of the exhaust valve, a circular groove with the same inner and outer radius as the exhaust valve annular groove 1f is arranged on the groove bottom of the exhaust valve annular groove 1f close to the central part of the base 1, the arc groove is a first exhaust cavity 1j of the exhaust valve; an exhaust valve control cavity 2f formed by a circular groove is arranged on the left side of the lower surface of the upper cover 2 and at a position corresponding to an exhaust valve annular groove 1f of the base 1, the inner diameter of the exhaust valve control cavity 2f is the same as the maximum inner diameter of the exhaust valve annular groove 1f, and the exhaust valve control cavity 2f on the upper cover 2, a second exhaust cavity 1h, the exhaust valve annular groove 1f and a first exhaust cavity 1j on the base 1 jointly form a left inner cavity of the base 1 and an upper cover 2; the exhaust assembly comprises an exhaust diaphragm 6, an exhaust valve spring 7 and an exhaust limiting ring 8, wherein the exhaust diaphragm 6 is a rubber wafer with a circular bulge at the peripheral part and a hard core at the central part, the cross section of the circular bulge is in an inverted U shape, the circular edge of the exhaust diaphragm 6 is clamped between the step end surface of an exhaust step groove of the base 1 and the lower end surface of an exhaust annular boss of the upper cover 2, the exhaust valve spring 7 is positioned in an exhaust valve control cavity 2f, the large-diameter upper end of the exhaust valve spring 7 is propped in a concave spring seat at the bottom of the exhaust valve control cavity 2f, the small-diameter lower end of the exhaust valve spring 7 is propped against the central part of the upper surface of the exhaust diaphragm 6, the exhaust limiting ring 8 is a member formed by connecting the lower part of an upper ring 8b with an upper circular cross section and the upper surface of a lower ring 8a with a rectangular cross section in a penetrating manner, the outer diameter of the lower ring 8a is larger than the outer diameter of the upper ring 8b, the outer diameter of the lower ring 8a is in interference fit with the middle section hole of the exhaust step groove of the base 1, and the upper ring 8b of the exhaust limiting ring 8 is positioned in the inner cavity of the circular bulge of the exhaust diaphragm 6; an exhaust valve control cavity air inlet 2b communicated with an exhaust valve control cavity 2f is formed in the upper cover 2, the exhaust valve control cavity air inlet 2b is communicated with one end of a second flow limiting hole 11 through a pipeline, the other end of the second flow limiting hole 11 is communicated with an air inlet 1a in the base 1 through a pipeline, an exhaust valve control cavity air outlet 2d communicated with the exhaust valve control cavity 2f is formed in the upper cover 2, the exhaust valve control cavity air outlet 2d is communicated with a second air inlet 9b of the two-position three-way electromagnetic valve 9 through a pipeline, and the drift diameter of the second flow limiting hole 11 is smaller than the drift diameter between the second air inlet 9b and the air outlet 9c of the two-position three-way electromagnetic valve 9; a channel 1k for communicating the second air inlet cavity 1m with the first air exhaust cavity 1j is arranged on the base 1, an adsorption tower port 1b is positioned in the center of the lower surface of the base 1, and the adsorption tower port 1b is communicated with the channel 1 k.
The two-position three-way electromagnetic valve adopts finished products.
The working principle of the invention is as follows: an electrically controlled pneumatic device is matched with an adsorption tower for use, an air inlet 1a of a base 1 is communicated with compressed air after engine bleed air is pretreated and is simultaneously communicated with one end of a first flow limiting hole 10 and one end of a second flow limiting hole 11, an adsorption tower port 1b of the base 1 is communicated with an inlet and an outlet of the adsorption tower, and an air outlet 1c of the base 1 is communicated with the atmosphere.
When the two-position three-way electromagnetic valve 9 is in the air inlet position, the first air inlet 9a of the two-position three-way electromagnetic valve 9 is communicated with the air outlet 9c, and the second air inlet 9b of the two-position three-way electromagnetic valve 9 is disconnected with the air outlet 9 c. Compressed air is discharged into the atmosphere through the first air inlet flow limiting hole 10, an air inlet 2a of an air inlet valve control cavity of the upper cover 2, an air outlet 2c of the air inlet valve control cavity of the upper cover 2 and the two-position three-way electromagnetic valve 9, so that the air inlet valve control cavity 2e is in an emptying state; meanwhile, the compressed air enters the exhaust valve control chamber 2f of the upper cover 2 through the second air inlet flow limiting hole 11 and the exhaust valve control chamber air inlet 2b of the upper cover 2, so that the exhaust valve control chamber 2f is in a pressurized state. Meanwhile, compressed air enters the first air inlet cavity 1n through the air inlet 1a, the air inlet valve is opened, the air exhaust valve is closed at the moment, and the compressed air inflates the adsorption tower through the channel 1k and the adsorption tower opening 1 b. Pressure adsorption is carried out.
When the two-position three-way solenoid valve 9 is in the exhaust position, the first air inlet 9a of the two-position three-way solenoid valve 9 is disconnected from the exhaust port 9c, and the second air inlet 9b of the two-position three-way solenoid valve 9 is communicated with the exhaust port 9 c. Compressed air enters the air inlet valve control cavity 2e of the upper cover 2 through the first air inlet flow limiting hole 10 and the air inlet valve control cavity air inlet 2a of the upper cover 2, so that the air inlet valve control cavity 2e is in a pressurizing state, and the air inlet valve is closed. Compressed air is discharged into the atmosphere through the second air inlet flow limiting hole 11, the air inlet 2b of the exhaust valve control cavity of the upper cover 2, the exhaust valve control cavity exhaust port 2d and the two-position three-way electromagnetic valve 9, and the exhaust valve control cavity 2f is in an emptying state. At this time, the gas in the adsorption tower opens the exhaust valve and is exhausted to the atmosphere, and the adsorption tower is depressurized and desorbed.
Claims (1)
1. An airborne electric control pneumatic device is characterized by comprising a base (1) and an upper cover (2), wherein the base (1) and the upper cover (2) are connected into a whole through screws, and the base (1) is provided with an air inlet (1a), an adsorption tower opening (1b) and an air outlet (1 c); the device is characterized in that the electric control pneumatic device consists of an air inlet valve, an air exhaust valve, a two-position three-way electromagnetic valve (9), a first flow limiting hole (10) and a second flow limiting hole (11), wherein the air inlet valve and the air exhaust valve are arranged in a base (1) and an upper cover (2); the base (1) and the upper cover (2) are both rectangular plates, the air inlet valve is positioned in the right inner cavities of the base (1) and the upper cover (2), the air outlet valve is positioned in the left inner cavities of the base (1) and the upper cover (2), and the structures of the air inlet valve and the air outlet valve are bilaterally symmetrical; the air inlet valve consists of a base (1), the right half part of an upper cover (2) and an air inlet assembly arranged in an inner cavity on the right side; the right side of the base (1) is provided with a first air inlet cavity (1n) formed by a circular hole in a right-angled broken line shape, the vertical section of the first air inlet cavity (1n) is opened in the center of the plate surface of the upper surface of the right half part of the base (1), the horizontal section of the first air inlet cavity (1n) is opened on the right end surface of the base (1), the horizontal section of the first air inlet cavity (1n) is an air inlet (1a), the vertical section and the horizontal section of the first air inlet cavity (1n) are communicated in the base (1), the upper surface of the base (1) and the outer side of the upper port of the vertical section of the first air inlet cavity (1n) are provided with an air inlet valve annular groove (1d) coaxial with the upper port, a circular ring between the upper port of the vertical section of the first air inlet cavity (1n) and the air inlet valve annular groove (1d) forms a movable valve seat (1e) of the air inlet valve, and an annular groove (1d) is arranged on the bottom of the air inlet valve annular groove (1d) close to the central part of the base (1), and the annular groove (1d) is provided with the air inlet valve annular groove ) The circular arc grooves are circular arc grooves with the same inner and outer radiuses, and are second air inlet cavities (1m) of the air inlet valve; an air inlet valve control cavity (2e) formed by a circular groove is arranged at the position, corresponding to the air inlet valve annular groove (1d) of the base (1), on the right side of the lower surface of the upper cover (2), the inner diameter of the air inlet valve control cavity (2e) is the same as the maximum inner diameter of the air inlet valve annular groove (1d), and the air inlet valve control cavity (2e) on the upper cover (2) and the first air inlet cavity (1n), the air inlet valve annular groove (1d) and the second air inlet cavity (1m) on the base (1) jointly form a right inner cavity of the base (1) and the upper cover (2); the air inlet assembly consists of an air inlet diaphragm (3), an air inlet valve spring (4) and an air inlet limiting ring (5), wherein the air inlet diaphragm (3) is a rubber wafer with a circular bulge on the periphery and a hard core on the center, the cross section of the circular bulge is in an inverted U shape, the circular edge of the air inlet diaphragm (3) is clamped between the step end surface of an air inlet step groove of the base (1) and the lower end surface of an air inlet annular boss of the upper cover (2), the air inlet valve spring (4) is positioned in an air inlet valve control cavity (2e), the large-diameter upper end of the air inlet valve spring (4) is propped in a concave spring seat at the bottom of the air inlet valve control cavity (2e), the small-diameter lower end of the air inlet valve spring (4) is propped against the center part of the upper surface of the air inlet diaphragm (3), and the air inlet limiting ring (5) is a member formed by connecting the lower part of an upper ring (5b) with the lower surface of a rectangular cross section through the air inlet limiting ring (5a), the outer diameter of the lower ring (5a) is larger than that of the upper ring (5b), the outer diameter of the lower ring (5a) is in interference fit with a middle section hole of an air inlet step groove of the base (1), and the upper ring (5b) of the air inlet limiting ring (5) is positioned in an inner cavity of the circular bulge of the air inlet diaphragm (3); an air inlet valve control chamber air inlet (2a) communicated with an air inlet valve control chamber (2e) is formed in the upper cover (2), the air inlet valve control chamber air inlet (2a) is communicated with one end of a first flow limiting hole (10) through a pipeline, the other end of the first flow limiting hole (10) is communicated with an air inlet (1a) in the base (1) through a pipeline, an air inlet valve control chamber air outlet (2c) communicated with the air inlet valve control chamber (2e) is formed in the upper cover (2), the air inlet valve control chamber air outlet (2c) is communicated with a first air inlet (9a) of a two-position three-way electromagnetic valve (9) through a pipeline, an air outlet (9c) of the two-position three-way electromagnetic valve (9) is communicated with the atmosphere, and the drift diameter of the first flow limiting hole (10) is smaller than that between the first air inlet (9a) and the air outlet (9c) of the two-position three-way electromagnetic valve (9); the exhaust valve consists of a left half part of the base (1) and the upper cover (2) and an exhaust component arranged in an inner cavity on the left side; a second exhaust cavity (1h) formed by circular holes in a right-angle broken line shape is arranged on the left side of the base (1), the vertical section of the second exhaust cavity (1h) is opened in the center of the plate surface of the upper surface of the left half part of the base (1), the horizontal section of the second exhaust cavity (1h) is opened on the left end surface of the base (1), the opening of the horizontal section of the second exhaust cavity (1h) is an exhaust port (1c), the vertical section and the horizontal section of the second exhaust cavity (1h) are communicated with each other in the base (1), an exhaust valve annular groove (1f) coaxial with the upper port is arranged on the upper surface of the base (1) and outside the upper port of the vertical section of the second exhaust cavity (1h), a circular ring between the upper port of the vertical section of the second exhaust cavity (1h) and the exhaust valve annular groove (1f) forms a movable valve seat (1g) of the exhaust valve, and an annular groove (1f) is arranged on the bottom of the annular groove (1f) close to the central part of the base (1), and is provided with the annular groove (1f) of the exhaust valve ) The exhaust valve comprises an arc groove with the same inner and outer radiuses, wherein the arc groove is a first exhaust cavity (1j) of the exhaust valve; an exhaust valve control cavity (2f) formed by a circular groove is arranged on the left side of the lower surface of the upper cover (2) and at a position corresponding to an exhaust valve annular groove (1f) of the base (1), the inner diameter of the exhaust valve control cavity (2f) is the same as the maximum inner diameter of the exhaust valve annular groove (1f), and the exhaust valve control cavity (2f) on the upper cover (2) and a second exhaust cavity (1h), the exhaust valve annular groove (1f) and a first exhaust cavity (1j) on the base (1) jointly form a left inner cavity of the base (1) and the upper cover (2); the exhaust assembly consists of an exhaust diaphragm (6), an exhaust valve spring (7) and an exhaust limiting ring (8), wherein the exhaust diaphragm (6) is a rubber wafer with a circular bulge at the peripheral part and a hard core at the central part, the section of the circular bulge is in an inverted U shape, the circular edge of the exhaust diaphragm (6) is clamped between the step end surface of an exhaust step groove of the base (1) and the lower end surface of an exhaust annular boss of the upper cover (2), the exhaust valve spring (7) is positioned in an exhaust valve control cavity (2f), the large-diameter upper end of the exhaust valve spring (7) is propped in a concave spring seat at the bottom of the exhaust valve control cavity (2f), the small-diameter lower end of the exhaust valve spring (7) is propped at the central part of the upper surface of the exhaust diaphragm (6), the exhaust limiting ring (8) is a member formed by connecting the lower part of an upper ring (8b) with the lower surface of a lower rectangular section through the exhaust limiting ring (8a), the outer diameter of the lower ring (8a) is larger than that of the upper ring (8b), the outer diameter of the lower ring (8a) is in interference fit with a middle section hole of an exhaust step groove of the base (1), and the upper ring (8b) of the exhaust limiting ring (8) is positioned in an inner cavity of the circular bulge of the exhaust diaphragm (6); an exhaust valve control chamber air inlet (2b) communicated with an exhaust valve control chamber (2f) is formed in the upper cover (2), the exhaust valve control chamber air inlet (2b) is communicated with one end of a second flow limiting hole (11) through a pipeline, the other end of the second flow limiting hole (11) is communicated with an air inlet (1a) in the base (1) through a pipeline, an exhaust valve control chamber air outlet (2d) communicated with the exhaust valve control chamber (2f) is formed in the upper cover (2), the exhaust valve control chamber air outlet (2d) is communicated with a second air inlet (9b) of the two-position three-way electromagnetic valve (9) through a pipeline, and the drift diameter of the second flow limiting hole (11) is smaller than that between the second air inlet (9b) and the air outlet (9c) of the two-position three-way electromagnetic valve (9); a channel (1k) communicated with a second air inlet cavity (1m) and a first air exhaust cavity (1j) is arranged on the base (1), an adsorption tower port (1b) is positioned in the center of the lower surface of the base (1), and the adsorption tower port (1b) is communicated with the channel (1 k).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110024909.0A CN112811396B (en) | 2021-01-08 | 2021-01-08 | Airborne electric control pneumatic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110024909.0A CN112811396B (en) | 2021-01-08 | 2021-01-08 | Airborne electric control pneumatic device |
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| CN112811396A CN112811396A (en) | 2021-05-18 |
| CN112811396B true CN112811396B (en) | 2022-05-03 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2212113Y (en) * | 1994-12-27 | 1995-11-08 | 陈正贵 | Low Power electricity saving electromagnetic valve |
| CN2783068Y (en) * | 2005-03-22 | 2006-05-24 | 北京安氧舒科技发展有限公司 | Combined air distribution valve for oxygen preparing or nitrogen preparing machine |
| WO2019115027A1 (en) * | 2017-12-15 | 2019-06-20 | Wabco Europe Bvba | Membrane valve assembly for a compressed air braking system |
| CN110605000A (en) * | 2019-09-11 | 2019-12-24 | 武汉美氧科技有限公司 | Oxygenerator adsorption tower upper cover and nitrogen system and oxygenerator of admitting air |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6252941B2 (en) * | 2014-01-24 | 2017-12-27 | Smc株式会社 | Oxygen concentrator |
| JP6275634B2 (en) * | 2014-12-25 | 2018-02-07 | 愛三工業株式会社 | Flow control valve and evaporated fuel processing device |
-
2021
- 2021-01-08 CN CN202110024909.0A patent/CN112811396B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2212113Y (en) * | 1994-12-27 | 1995-11-08 | 陈正贵 | Low Power electricity saving electromagnetic valve |
| CN2783068Y (en) * | 2005-03-22 | 2006-05-24 | 北京安氧舒科技发展有限公司 | Combined air distribution valve for oxygen preparing or nitrogen preparing machine |
| WO2019115027A1 (en) * | 2017-12-15 | 2019-06-20 | Wabco Europe Bvba | Membrane valve assembly for a compressed air braking system |
| CN110605000A (en) * | 2019-09-11 | 2019-12-24 | 武汉美氧科技有限公司 | Oxygenerator adsorption tower upper cover and nitrogen system and oxygenerator of admitting air |
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| CN112811396A (en) | 2021-05-18 |
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