CN110701353B - Oxygen supply pressure reducing valve for parachuting - Google Patents

Oxygen supply pressure reducing valve for parachuting Download PDF

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Publication number
CN110701353B
CN110701353B CN201910862973.9A CN201910862973A CN110701353B CN 110701353 B CN110701353 B CN 110701353B CN 201910862973 A CN201910862973 A CN 201910862973A CN 110701353 B CN110701353 B CN 110701353B
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China
Prior art keywords
valve body
valve
main valve
pressure
sleeve
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CN201910862973.9A
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Chinese (zh)
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CN110701353A (en
Inventor
李彦卿
王俊丽
赵倩男
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Cama Luoyang Gas Supply Co ltd
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Cama Luoyang Gas Supply Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0341—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0341—Filters
    • F17C2205/0344—Sinter type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The invention discloses a parachute jumping oxygen supply pressure reducing valve which comprises a connection mechanism, a main valve cover, a main valve body, a pressure reducing mechanism and a switch mechanism, wherein the main valve cover is connected with the main valve body in a sealing mode through screws, a diaphragm is arranged at the joint of the main valve cover and the main valve body, an inflation port of the main valve body is communicated with an inflation valve, an air outlet of the main valve body is communicated with an air outlet valve, the lower end of the main valve body is communicated with an air bottle connector and a filter, the periphery of the main valve body is also communicated with a pressure gauge, and a bracket is fixed to the upper portion of the. This parachute jumping oxygen suppliment relief pressure valve, through the connection of switch-on mechanism and on-off mechanism and the work and the inoperative of disconnection control relief pressure mechanism, the during operation supplies oxygen regulator to use after accurately decompressing to suitable pressure range with the hyperbaric oxygen in the oxygen cylinder, and oxygen output is steady, the pressure regulating precision is high, satisfies the needs of parachute jumping personnel oxygen, has easy operation, easily realizes, advantage such as used repeatedly and reliability height.

Description

Oxygen supply pressure reducing valve for parachuting
Technical Field
The invention relates to the technical field of parachute jumping equipment, in particular to a parachute jumping oxygen supply pressure reducing valve.
Background
The pressure reducer is gas control's industrial equipment, mainly is applied to fields such as mechanical power, petrochemical and on-vehicle fire control, adjusts gaseous flow through the throttle opening that the case of control pressure reducer, valve rod formed, adjusts the aperture of throttle opening with the help of the change of pressure regulating spring, reset spring and pressure around the diaphragm simultaneously, makes the pressure reducer under the situation of input pressure constantly changing, keeps the unchangeable pressure regulating device of flow and output pressure.
The oxygen supply pressure reducer applied to the field of airborne parachuting is far higher than the pressure reducers in the common industry in various performances, and has the characteristics of low output pressure, stable output, good dynamic characteristics, good sealing performance, strong environmental adaptability, high safety and reliability and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects, and provide the parachute jumping oxygen supply pressure reducer, wherein the work and the non-work of the pressure reducing mechanism are controlled by connecting and disconnecting the connection mechanism and the switch mechanism, and the high-pressure oxygen in the oxygen bottle is accurately reduced to a proper pressure range and then is supplied to the oxygen regulator during work, so that the oxygen output is stable, the pressure regulating precision is high, the oxygen demand of parachute jumping personnel is met, and the parachute jumping oxygen supply pressure reducer has the advantages of simple operation, easy realization, high reuse, high reliability and the like, and can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a parachuting oxygen supply pressure reducing valve comprises a switch-on mechanism, a main valve cover, a main valve body, a pressure reducing mechanism and a switch mechanism, wherein the main valve cover is connected with the main valve body in a sealing mode through screws, a diaphragm is arranged at the joint of the main valve cover and the main valve body, an inflation valve is communicated with an inflation opening of the main valve body, an air outlet of the main valve body is communicated with an air outlet valve, the lower end of the main valve body is communicated with an air bottle interface and a filter, the periphery of the main valve body is also communicated with a pressure gauge, a bracket is fixed to the upper portion of the main valve cover through screws, the inner side of the bracket is provided with the switch-on mechanism corresponding to the switch mechanism, and the inner cavity of the main valve body is;
the connecting mechanism comprises a first connecting sleeve and a second connecting sleeve, a first spring seat is in threaded connection with an inner cavity of the second connecting sleeve, the first spring seat is of an internal hollow structure, a pull rod is movably sleeved in the inner cavity of the first spring seat, a spring is sleeved on a rod body of the pull rod, a connecting cap is connected to one end, away from the bracket, of the pull rod through a pin, a pull ring used for pulling the connecting cap is rotatably connected to the connecting cap, the first connecting sleeve is vertically arranged at the end part of the second connecting sleeve, a through hole used for penetrating the pull rod is formed in a cylinder body of the first connecting sleeve, a limiting pin is arranged in the upper area of the pull rod in the inner cavity of the first connecting sleeve, the top end of the limiting pin penetrates through the through hole in the upper part of the first connecting;
the switch mechanism comprises a switch handle, a movable column and a pressure regulating element, wherein a cam part of the switch handle is in pin joint with the upper part of the movable column through a connecting pin, the cam part of the switch handle corresponds to the upper end surface of the main valve cover, the upper part of the switch handle is provided with a connecting hook part corresponding to the top end of the limiting pin, the movable column extends into the inner cavity of the main valve cover, the bottom end of the movable column is provided with a boss, the column body of the movable column is sleeved with a pressure regulating spring, the bottom end of the pressure regulating spring is in contact with the boss at the bottom end of the movable column, the top end of the pressure regulating spring is in contact with the pressure regulating element, the pressure regulating element is sleeved outside the movable column;
the pressure reducing mechanism comprises a first pressure sleeve and a valve seat, the first pressure sleeve is fixed on the upper portion of an inner cavity of the main valve body, an air source through groove is formed in the first pressure sleeve, a guide sleeve is sleeved on the inner cavity of the first pressure sleeve, through holes are uniformly distributed in the periphery of the lower end of the guide sleeve, an ejector rod is sleeved on the upper portion of the inner cavity of the guide sleeve, an arc-shaped contact portion corresponding to a boss at the bottom end of a movable column is arranged on the upper portion of the ejector rod, a valve core is sleeved on the lower portion of the inner cavity of the guide sleeve, the lower portion of the valve core is of a cone frustum structure, an air flow through groove communicated to each cavity is formed in the cone frustum, the bottom end of the valve core is connected with an air cylinder interface through a spring and a positioning sleeve.
Preferably, the inflation valve comprises an inflation valve body, a spring seat II and a sleeve are fixed to a port of the inflation valve body communicated with an inflation port of the main valve body through a pressing sleeve II, the spring seat II is movably sleeved in the sleeve, a spring is arranged in an inner cavity of the spring seat II, a valve and a valve seat matched with the valve are arranged in the middle of the inner cavity of the inflation valve body, the valve seat is fixed to the inner cavity of the inflation valve body through the sleeve, a mounting groove matched with the spring is formed in one end of the valve, a sintered filter disc is fixed to the inflation port of the inflation valve body through a pressing plate, a nut is in threaded connection with the periphery of the inflation end of the inflation valve body, a plug for sealing the inflation port of the inflation valve body is in threaded connection with the center of the cap body of.
Preferably, the sintered filter disc is a tin bronze spherical powder sintered filter disc.
Preferably, the air outlet valve comprises a three-way valve body, an air outlet port of the three-way valve body is communicated with an output connector, an air outlet of the output connector is sealed through a shaft, a protective cap used for rotatably pulling out the shaft is arranged at one end of the shaft and is of a clip lock structure, a locking spring and a moving part are arranged in an inner cavity of the three-way valve body, the moving part is of an inner hollow structure, the locking spring is sleeved on the periphery of the moving part, a first locking nut is arranged on the periphery of an air inlet end of the three-way valve body and is connected with the protective cap through a second connecting piece, and a.
Preferably, an O-shaped ring and a check ring are arranged at the joint of the output joint and the air outlet port of the three-way valve body.
Preferably, the safety valve comprises a pressure regulating nut and a valve core assembly, the pressure regulating nut is connected to the periphery of the upper groove body of the three-way valve body, a locking nut II used for limiting the pressure regulating nut is arranged on the periphery of the upper groove body of the three-way valve body, and the valve core assembly is arranged in an inner cavity of the upper groove body of the three-way valve body through a spring on the upper portion of the valve core assembly in a pressing mode.
Preferably, the valve core assembly comprises a connecting seat, and a sealing gasket for sealing the air source flow groove is arranged at the lower part of the connecting seat.
Compared with the prior art, the invention has the following advantages:
1. by manually controlling the connection or disconnection state of the connection mechanism and the switch mechanism, when the switch handle is connected with the limiting pin, the movable column moves upwards and is separated from the ejector rod, the valve core is in sealing contact with the valve seat, the low-pressure cavity is disconnected from the high-pressure cavity, so that gas output is prevented, the pressure reducer does not work, the limiting pin is released, the switch handle acts, the pressure regulating spring force is reset, the movable column moves downwards and presses the ejector rod downwards, the valve core is separated from the valve seat, the low-pressure cavity is connected with the high-pressure cavity, gas output is realized, and the pressure reducer works, so;
2. the pressure regulating element is regulated, the pressure regulating spring is pre-tightened, the opening degree of the valve core and the valve seat is further changed, and pressure regulation is realized;
3. the inflation valve can realize filling dress and the solid particle filtration to the oxygen cylinder, and the gas cylinder interface is connected with the oxygen cylinder, and the filter of gas cylinder interface department can filter gas cylinder gas solid particle moreover, guarantees output oxygen cleanliness factor and safety in utilization, and the air outlet valve is transferred the ware with outside oxygen and is connected, and the relief valve on the air outlet valve realizes high-pressure release, can prevent that output pressure is too high and crisis rear end equipment safety.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of the pressure reducing mechanism of the present invention;
FIG. 4 is a schematic structural view of the connection state between the switch-on mechanism and the switch mechanism according to the present invention;
FIG. 5 is a schematic structural view of the on-state and off-state of the switch mechanism of the present invention;
FIG. 6 is a schematic view of the inflation valve of the present invention;
FIG. 7 is a schematic view of the structure of the air outlet valve and the safety valve of the present invention.
In the figure: 1 switching-on mechanism, 101 spacing pin, 102 connecting sleeve I, 103 connecting sleeve II, 104 spring seat I, 105 connecting cap, 106 pull rod, 107 pull ring, 2 main valve cover, 3 main valve body, 4 gas cylinder interface, 401 filter, 5 decompression mechanism, 501 push rod, 502 pressing sleeve I, 503 positioning sleeve, 504 valve core, 505 valve seat, 506 guide sleeve, 6 switching mechanism, 601 switch handle, 602 movable column, 603 pressure regulating element, 604 pressure regulating spring, 7 inflation valve, 701 inflation valve body, 702 pressing sleeve II, 703 spring seat II, 704 sleeve, 705 valve seat, 706 valve, 707 sintering filter sheet, 708 pressing plate, 709 nut, 710 plug, 711 connector I, 8 air outlet valve, 801 three-way valve body, 802 locking nut I, 803 connector II, 804 locking spring, 805 movable piece, 806 shaft, 807 protective cap, 808 output joint, 9 safety valve, 901 locking nut II, 902 pressure regulating nut, 903 valve core assembly, 903, 801 three-way valve body, 802 locking nut I, 803, 804 locking nut II, 806 locking nut, 10 pressure gauge, 11 diaphragm, 12 bracket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution:
a parachuting oxygen supply pressure reducing valve comprises a switch-on mechanism 1, a main valve cover 2, a main valve body 3, a pressure reducing mechanism 5 and a switch mechanism 6, wherein the main valve cover 2 is hermetically connected with the main valve body 3 through screws, a diaphragm 11 is arranged at the joint of the main valve cover 2 and the main valve body 3, an inflation valve 7 is communicated with an inflation port of the main valve body 3, an air outlet of the main valve body 3 is communicated with an air outlet valve 8, the lower end of the main valve body 3 is communicated with an air bottle interface 4 and a filter 401, the air bottle interface 4 is connected with an oxygen bottle, the filter 401 filters solid particles in the air bottle gas, ensures oxygen cleanliness and safety in use, a pressure gauge 10 is further communicated with the periphery of the main valve body 3 and can display the gas pressure of the oxygen bottle, a bracket 12 is fixed on the upper portion of the main valve cover 2 through screws, the switch mechanism 6 is arranged on the inner side of, a decompression mechanism 5 corresponding to the switch mechanism 6 is arranged in the inner cavity of the main valve body 3;
the connecting mechanism 1 comprises a first connecting sleeve 102 and a second connecting sleeve 103, a first spring seat 104 is in threaded connection with an inner cavity of the second connecting sleeve 103, the first spring seat 104 is of an internal hollow structure, a pull rod 106 is movably sleeved in the inner cavity of the first spring seat 104, a spring is sleeved on a rod body of the pull rod 106, a connecting cap 105 is connected to one end, away from the bracket 12, of the pull rod 106 through a pin, a pull ring 107 used for pulling the connecting cap 105 is connected to the connecting cap 105 in a rotating mode, the first connecting sleeve 102 is vertically arranged at the end portion of the second connecting sleeve 103, a through hole used for penetrating through the pull rod 106 is formed in a barrel body of the first connecting sleeve 102, a limiting pin 101 is arranged in an upper area, located at the pull rod 106, of the inner cavity of the first connecting sleeve 102, the top end of the limiting pin 101 penetrates through the through hole in the upper portion of the first connecting sleeve 102, the pin body of, the pull rod 106 jacks up the limit pin 101 under the acting force of the spring and is connected with the switch mechanism 6, when the switch mechanism is used, the pull rod 106 moves by pulling the pull rod 106, the limit pin 101 moves downwards under the acting force of the spring to release the switch mechanism 6, and the operation is convenient;
the switch mechanism 6 comprises a switch handle 601, a movable column 602 and a pressure regulating element 603, wherein a cam part of the switch handle 601 is in pin joint with the upper part of the movable column 602 through a connecting pin, the cam part of the switch handle 601 corresponds to the upper end surface of the main valve cover 2, a connecting hook part corresponding to the top end of the limit pin 101 is arranged on the upper part of the switch handle 601, the movable column 602 extends into the inner cavity of the main valve cover 2, a boss is arranged at the bottom end of the movable column 602, a pressure regulating spring 604 is sleeved on the column body of the movable column 602, the bottom end of the pressure regulating spring 604 is in contact with the boss at the bottom end of the movable column 602, the top end of the pressure regulating spring 604 is in contact with the pressure regulating element 603, the pressure regulating element 603 is sleeved outside the movable column 602, the periphery of the pressure regulating element 603 is in threaded connection with the main valve cover 2, the connecting hook part of the switch handle 601 is matched with the top, the pressure regulating spring 604 is compressed, the movable column 602 moves upwards, does not act on the pressure reducing mechanism 5, when the switch-on mechanism 1 acts, the limit pin 101 is released, the cam part of the switch handle 601 is separated from the main valve cover 2, the pressure regulating spring 604 resets, and the movable column 602 moves downwards and acts on the pressure reducing mechanism 5;
the pressure reducing mechanism 5 comprises a first pressing sleeve 502 and a valve seat 505, the first pressing sleeve 502 is fixed on the upper part of the inner cavity of the main valve body 3, an air source through groove is arranged on the first pressing sleeve 502, the inner cavity of the first pressing sleeve 502 is sleeved with a guide sleeve 506, through holes are uniformly distributed on the periphery of the lower end of the guide sleeve 506, the upper part of the inner cavity of the guide sleeve 506 is sleeved with a mandril 501, the upper part of the mandril 501 is provided with an arc contact part corresponding to a boss at the bottom end of the movable column 602, the lower part of the inner cavity of the guide sleeve 506 is sleeved with a valve core 504, the lower part of the valve core 504 is of a cone frustum structure, the cone frustum is provided with an air flow through groove communicated with each cavity, the bottom end of the valve core 504 is connected with the air bottle interface 4 through a spring and a positioning sleeve, the valve seat 505 is fixed on the inner cavity of the main valve body 3 through the, the valve core 504 is in sealing contact with the valve seat 505, the low-pressure cavity is disconnected with the high-pressure cavity, gas output is prevented, the pressure reducer does not work, when the switching mechanism 6 acts on the pressure reducing mechanism 5, the low-pressure cavity is connected with the high-pressure cavity, gas output is realized, and the pressure reducer works;
the pressure regulating element 603 is adjusted to pre-tighten the pressure regulating spring 604, so that the opening degree of the valve core 504 and the valve seat 505 is changed, pressure regulation is realized, when the output pressure of the pressure reducer is increased, the gas pressure at the lower part of the diaphragm is increased, the diaphragm moves upwards and pushes the movable column to move upwards, the opening degree of the valve port is reduced, the flow rate is increased, the pressure drop is increased, and the output pressure is reduced; when the output pressure of the pressure reducer is reduced, the gas pressure at the lower part of the diaphragm is reduced, the diaphragm moves downwards under the action of the pressure regulating spring, the opening degree of a valve port is increased, the flow rate is reduced, the pressure drop is reduced, the output pressure is increased, and the balance type diaphragm principle is adopted, so that the pressure reducer has the advantages of stable output characteristic, high pressure regulating precision and the like;
in addition, when the lock is used, the switch handle 601 can be rotated through a tool, the pull ring 107 is released after the switch handle 601 is in place, the limit pin 101 is jacked up and is connected with the switch handle 601 again, the locking state is recovered, and the purpose of repeated use is achieved;
the inflation valve 7 comprises an inflation valve body 701, a spring seat II 703 and a sleeve 704 are fixed at a port of the inflation valve body 701 communicated with an inflation port of the main valve body 3 through a pressing sleeve II 702, the spring seat II 703 is movably sleeved in the sleeve 704, a spring is arranged in an inner cavity of the spring seat II 703, a valve 706 and a valve seat 705 matched with the valve 706 are arranged in the middle of the inner cavity of the inflation valve body 701, the valve seat 705 is fixed in the inner cavity of the inflation valve body 701 through the sleeve 704, one end of the valve 706 is provided with a mounting groove matched with the spring, a sintered filter 707 is fixed at the inflation port of the inflation valve body 701 through a pressing plate 708, the sintered filter 707 is a tin bronze spherical powder sintered filter, a nut 709 is connected at the periphery of the inflation end of the inflation valve body 701 through a screw thread, a plug 710 for sealing the inflation port of the inflation valve body 701 is connected at the center of the nut 709 through a screw thread, the charging valve 7 can be used for charging the oxygen cylinder, the sintered filter disc 707 can be used for filtering solid particles to ensure the cleanness of charged oxygen, and the valve 706 is matched with the valve seat 705 and the plug 710 is matched with the charging port of the charging valve body 701 to form two seals, so that the oxygen is prevented from leaking outside, and the reliability is improved;
the air outlet valve 8 comprises a three-way valve body 801, an air outlet port of the three-way valve body 801 is communicated with an output connector 808, a connection position of the output connector 808 and the air outlet port of the three-way valve body 801 is provided with an O-shaped ring and a retainer ring, an air outlet of the output connector 808 is sealed through a shaft 806, one end of the shaft 806 is provided with a protective cap 807 for rotatably pulling out the shaft 806, the protective cap 807 is of a return-type locking structure and has a self-locking function, the safety is enhanced, a locking spring 804 and a moving member 805 are arranged in an inner cavity of the three-way valve body 801, the moving member 805 is of an inner hollow structure, the locking spring 804 is sleeved on the periphery of the moving member 805, the periphery of an air inlet end of the three-way valve body 801 is provided with a locking nut;
the safety valve 9 comprises a pressure regulating nut 902 and a valve core assembly 903, the pressure regulating nut 902 is connected to the periphery of an upper groove body of the three-way valve body 801, a locking nut II 901 used for limiting the pressure regulating nut 902 is arranged on the periphery of the upper groove body of the three-way valve body 801, the valve core assembly 903 is pressed in an upper groove body inner cavity of the three-way valve body 801 through a spring on the upper portion of the valve core assembly 903, the valve core assembly 903 comprises a connecting seat, a sealing gasket for sealing an air source flow groove is arranged on the lower portion of the connecting seat, a direct-acting spring pressure relief mode is adopted, high-.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a parachute jumping oxygen suppliment relief pressure valve, includes switch-on mechanism (1), main valve lid (2), the main valve body (3), relief pressure mechanism (5) and on-off mechanism (6), its characterized in that: the main valve cover (2) is connected with the main valve body (3) in a sealing mode through screws, a diaphragm (11) is arranged at the joint of the main valve cover (2) and the main valve body (3), an inflation valve (7) is communicated with an inflation opening of the main valve body (3), an air outlet of the main valve body (3) is communicated with an air outlet valve (8), the lower end of the main valve body (3) is communicated with an air bottle interface (4) and a filter (401), a pressure gauge (10) is further communicated with the periphery of the main valve body (3), a bracket (12) is fixed to the upper portion of the main valve cover (2) through screws, a switch mechanism (6) is arranged on the inner side of the bracket (12), a switch-on mechanism (1) corresponding to the switch mechanism (6) is arranged outside the bracket (12), and a decompression mechanism (5) corresponding to the switch mechanism (6) is installed in an inner;
the switch-on mechanism (1) comprises a first connecting sleeve (102) and a second connecting sleeve (103), the inner cavity of the second connecting sleeve (103) is in threaded connection with a first spring seat (104), the first spring seat (104) is of an internal hollow structure, a pull rod (106) is movably sleeved in the inner cavity of the first spring seat (104), a spring is sleeved on a rod body of the pull rod (106), one end, far away from the bracket (12), of the pull rod (106) is connected with a connecting cap (105) through a pin, the connecting cap (105) is rotatably connected with a pull ring (107) used for pulling the connecting cap (105), the first connecting sleeve (102) is vertically arranged at the end part of the second connecting sleeve (103), a through hole for the pull rod (106) to penetrate through is formed in the barrel body of the first connecting sleeve (102), a limiting pin (101) is arranged in the upper area, located on the pull rod (106), of the inner cavity of the first connecting sleeve (102), the top end of the limiting pin, a spring is sleeved on the pin body of the limiting pin (101), and a sinking step corresponding to the bottom end of the limiting pin (101) is arranged at the end part of the pull rod (106);
the switch mechanism (6) comprises a switch handle (601), the valve comprises a movable column (602) and a pressure regulating element (603), wherein a cam part of a switch handle (601) is in pin joint with the upper part of the movable column (602) through a connecting pin, the cam part of the switch handle (601) corresponds to the upper end face of a main valve cover (2), a connecting hook part corresponding to the top end of a limiting pin (101) is arranged at the upper part of the switch handle (601), the movable column (602) extends into the inner cavity of the main valve cover (2), a boss is arranged at the bottom end of the movable column (602), a pressure regulating spring (604) is sleeved on a column body of the movable column (602), the bottom end of the pressure regulating spring (604) is in contact with the boss at the bottom end of the movable column (602), the top end of the pressure regulating spring (604) is in contact with the pressure regulating element (603), the pressure regulating element (603) is sleeved outside the movable column (602), and the periphery of the pressure regulating element (;
the pressure reducing mechanism (5) comprises a first pressure sleeve (502) and a valve seat (505), the first pressure sleeve (502) is fixed on the upper part of an inner cavity of the main valve body (3), an air source through groove is formed in the first pressure sleeve (502), the inner cavity of the first pressure sleeve (502) is sleeved with a guide sleeve (506), through holes are uniformly distributed in the periphery of the lower end of the guide sleeve (506), a push rod (501) is sleeved on the upper part of the inner cavity of the guide sleeve (506), an arc-shaped contact part corresponding to a boss at the bottom end of a movable column (602) is arranged on the upper part of the push rod (501), a valve core (504) is sleeved on the lower part of the inner cavity of the guide sleeve (506), the lower part of the valve core (504) is of a cone frustum structure, an air flow through groove communicated to each cavity is formed in the cone frustum, the bottom end of the valve core (504) is connected with the air bottle interface (4) through a spring and a positioning sleeve, the valve seat (, the valve seat (505) is provided with a flow hole in the axial direction, which is fitted to the truncated cone of the valve element (504).
2. A parachuting oxygen supply pressure relief valve as claimed in claim 1, wherein: the inflation valve (7) comprises an inflation valve body (701), a spring seat II (703) and a sleeve (704) are fixed to a port, communicated with an inflation port of the main valve body (3), of the inflation valve body (701) through a pressing sleeve II (702), the spring seat II (703) is movably sleeved in the sleeve (704), a spring is arranged in an inner cavity of the spring seat II (703), a valve (706) and a valve seat (705) matched with the valve (706) are arranged in the middle of the inner cavity of the inflation valve body (701), the valve seat (705) is fixed to the inner cavity of the inflation valve body (701) through the sleeve (704), an installation groove matched with the spring is formed in one end of the valve (706), a sintered filter disc (707) is fixed to the inflation port of the inflation valve body (701) through a pressing plate (708), a nut (709) is connected to the periphery of the inflation end of the inflation valve body (701) in a threaded manner, a plug (710) for sealing the inflation port of the inflation valve body (701) is, the periphery of the nut (709) is connected with the inflation valve body (701) through a first connecting piece (711).
3. A parachuting oxygen supply pressure relief valve as claimed in claim 2, wherein: the sintered filter disc (707) is a tin bronze spherical powder sintered filter disc.
4. A parachuting oxygen supply pressure relief valve as claimed in claim 1, wherein: the air outlet valve (8) comprises a three-way valve body (801), an air outlet port of the three-way valve body (801) is communicated with an output connector (808), an air outlet of the output connector (808) is sealed through a shaft (806), one end of the shaft (806) is provided with a protective cap (807) used for rotatably pulling out the shaft (806), the protective cap (807) is of a reverse locking structure, a locking spring (804) and a moving member (805) are arranged in an inner cavity of the three-way valve body (801), the moving member (805) is of an inner hollow structure, the locking spring (804) is sleeved on the periphery of the moving member (805), a locking nut I (802) is arranged on the periphery of an air inlet end of the three-way valve body (801), the locking nut I (802) is connected with the protective cap (807) through a connecting member II (803), and a.
5. A parachuting oxygen supply pressure relief valve according to claim 4, wherein: an O-shaped ring and a retainer ring are arranged at the joint of the output joint (808) and the air outlet port of the three-way valve body (801).
6. A parachuting oxygen supply pressure relief valve according to claim 4, wherein: the safety valve (9) comprises a pressure regulating nut (902) and a valve core assembly (903), the pressure regulating nut (902) is connected to the periphery of an upper groove body of the three-way valve body (801), a second locking nut (901) used for limiting the pressure regulating nut (902) is arranged on the periphery of the upper groove body of the three-way valve body (801), and the valve core assembly (903) is pressed in an inner cavity of the upper groove body of the three-way valve body (801) through a spring on the upper portion of the valve core assembly (903).
7. The parachuting oxygen supply pressure relief valve of claim 6, wherein: the valve core assembly (903) comprises a connecting seat, and the lower part of the connecting seat is provided with a sealing gasket for sealing an air source flow groove.
CN201910862973.9A 2019-09-12 2019-09-12 Oxygen supply pressure reducing valve for parachuting Active CN110701353B (en)

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