CN2500327Y - Isolated regeneration type positive pressure oxygen or mixed gas respirator - Google Patents
Isolated regeneration type positive pressure oxygen or mixed gas respirator Download PDFInfo
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- CN2500327Y CN2500327Y CN 01251458 CN01251458U CN2500327Y CN 2500327 Y CN2500327 Y CN 2500327Y CN 01251458 CN01251458 CN 01251458 CN 01251458 U CN01251458 U CN 01251458U CN 2500327 Y CN2500327 Y CN 2500327Y
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Abstract
The utility model relates to an insulated regenerative type positive-pressure oxygen or gaseous mixture respiration apparatus, which is characterized in that: the apparatus includes: a shell body (4), a half mask (1), a connecting box (37), an exhaling hose (A2), an inhaling hose (B2), a lustration pot (3), a gasbag (5), a gas cylinder (12), a cooler (6), a gas distributor, a sensor (9), a controller (10), an actuating mechanism (11), a gasbag pressure pad (26), and two foldout type pressure pad guide apparatuses (13) at an angle which are connected with the gasbag pressure pad (26); the gas distributor includes: a pressure relief valve (43), an automatic replenishing valve (7), a manual replenishing valve (8) and a proportional hole (44); one side of the half mask (1) is communicated with the inlet of the lustration pot (3) through the exhaling hose (A2); and the other side of the half mask (1) is communicated with the outlet of the cooler (6) through the inhaling hose (B2).
Description
Affiliated technical field
The utility model belongs to the protection of personal breathing organ safety device, particularly a kind of isolated regenerative positive pressure oxygen or mist breathing equipment.
Background technology
At present, the positive pressure oxygen or the mist respirator of typing production both at home and abroad have: (1) groundwork type respirator has the HYZ4 type of China; BG4, the Tramix type of Germany; Biopak 240 types of the U.S..Wherein De Guo Tramix type is the mist respirator.(2) back work type respirator has: Biopak 60 types of the U.S..Positive pressure oxygen or mist respirator have adopted malleation technology, falling temperature technique, overbottom pressure alarm technique, comprehensive tool technology, new material technology, many technical problems that the suction type respirator exists have been solved, thereby improved the security of respirator, reliability, enlarge the scope of application of respirator, improved other performance of respirator.But this type of respirator that typing is both at home and abroad at present produced exists key technical problem to be solved: (1) malleation technology does not pass a test.When respiratory capacity surpasses 30～50L/min when (surpassing medium or the work of heavy work intensity), the pressure of the respiratory circulatory system of respirator is along with the increasing of respiratory capacity gradually becomes negative pressure value, and just respirator has lost positive-pressure function and becomes the suction type respirator; (2) under the effect of the external force-spring force that loads on the air bag, the expiratory resistance of respirator obviously increases, expiratory resistance when respiratory capacity reaches 75L/min (work of utmost point heavy work intensity) substantially exceeds the permissible value (being not more than 1000Pa) of European Community's standard EN 145 regulations, well beyond people's physical endurance.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of malleation technology that can solve the work overall process of respirator under any labour intensity condition of work; Significantly reduce the expiratory resistance of the work overall process of respirator under any labour intensity condition of work; Work under any labour intensity condition of work the air-breathing of overall process and expiratory resistance value of respirator is controlled in the optimum range, increases the overbottom pressure warning function, thereby improve the isolated regenerative positive pressure oxygen or the mist respirator of respirator overall efficiency.
Technical solution of the present utility model can realize according to following mode:
The utility model contains: housing, half mask, connecting box, expiration flexible pipe, inhaling hose, peace and quiet jar, air bag, gas cylinder, cooler, gas distributor, sensor, controller, executing agency, air bag pressing plate, two angled folding paper pressing plate guiders that join with the air bag pressing plate; Described gas distributor contains: pressure-reducing valve, automatic replenishing valve, manual replenish valve, dosing hole; Described sensor and connecting box join; One side of described half mask communicates through the inlet of expiration flexible pipe with peace and quiet jar; The opposite side of described half mask communicates with the outlet of cooler through inhaling hose; Described peace and quiet jar communicates with the inlet of air bag; The inlet of described cooler communicates with the gas outlet of air bag; The outlet of described manual replenish valve communicates with the inlet of air bag by the road; The outlet of described pressure-reducing valve communicates with the inlet of automatic replenishing valve; Described dosing hole communicates with the inlet of air bag through the one export pipeline; The outlet of described automatic replenishing valve communicates with the inlet of air bag by the road; Described manual replenish valve and pressure-reducing valve air inlet communicate with the outlet of gas cylinder; Described executing agency is electrically connected with the output of controller; The input of described controller is connected with sensor electrical; The clutch end of described executing agency and air bag pressing plate join.
Pressing plate guider described in the utility model can be " W " shape folding paper structure.
Controller described in the utility model contains: amplifier, multiway analog switch, sampling/retainer, parallel interface, A/D converter, CPU, D/A converter, PWM amplifier; Described amplifier input terminal is connected with sensor electrical; The output of described amplifier is electrically connected with the multiway analog switch input through current transformer; The output of described multiway analog switch is electrically connected with the input of sampling/retainer; The output of described sampling/retainer is electrically connected with the input of A/D converter and joins; The output of described parallel interface is electrically connected with the input of sampling/retainer and multiway analog switch; Described A/D converter is electrically connected with the output of CPU input, parallel interface; The input of described parallel interface is electrically connected with the CPU output; The output of described CPU is electrically connected with the input of D/A converter; The output of described D/A converter is electrically connected with the PWM amplifier input terminal.
The utility model is provided with Pressure gauge in the port of described gas cylinder; Described Pressure gauge communicates with gas cylinder by the Pressure gauge capillary; Near described Pressure gauge, is furnished with the overbottom pressure alarm; Described overbottom pressure alarm contains: have cavity shell body, place valve, mouthpiece in the cavity; Described mouthpiece communicates with cavity through passage; Described cavity communicates with the Pressure gauge capillary.
Diaphragm in the automatic replenishing valve described in the utility model is directly corresponding with nozzle.
The utility model is provided with adjustable air bleeding valve in described peace and quiet jar end; The end of described adjustable air bleeding valve is provided with set screw; The bottom of described set screw is provided with non-return valve; Between described non-return valve vavle shelf and set screw, be provided with spring.
Sensor described in the utility model and connecting box join; Described executing agency is contained: motor, two ends are respectively equipped with the guider of directive wheel; The outputting power of described motor passes to the air bag pressing plate by conveyer belt through directive wheel.
Sensor described in the utility model and connecting box join; Described executing agency is contained: go up electromagnet, lower electromagnet; The described electromagnet of going up is electrically connected with the output of controller with the input of lower electromagnet; Described lower electromagnet and housing join; Last electromagnet and support join; It is described that upward electromagnet is corresponding with lower electromagnet; One wing of described pressing plate guider and a side of air bag pressing plate are joined.
Sensor described in the utility model and connecting box join; Described transmission mechanism contains; Last electromagnet, lower electromagnet; The described electromagnet of going up is electrically connected with the output of controller with the input of lower electromagnet; Described lower electromagnet and housing join; Last electromagnet and support join; It is described that upward electromagnet is corresponding with lower electromagnet; One wing of described pressing plate guider and a side of air bag pressing plate are joined.
The utility model and existing positive pressure respirator technology relatively have following characteristics:
(1) pressure when the respiratory capacity of the respirator wearer respiratory circulatory system of respirator during greater than 30～50L/min that has solved thoroughly that existing domestic and international respirator exists becomes negative pressure gradually, loses the technical problem of positive-pressure function, fundamentally solved the malleation technology of the work overall process of respirator under any labour intensity condition of work, improve security, the reliability of respirator, enlarged the scope of application of respirator.
(2) significantly reduce the expiratory resistance of respirator, and will exhale and inspiratory resistance be controlled in the scope of optimum value, have very high comfortableness.
(3) adopted by source of the gas and directly acted on, save air consumption have adjustable function and a timing function with Pressure gauge and catheter combination thereof together and in integral layout, accomplish as much as possible combined type alarm near people's hearing organ, thereby improved the actual effect of the security and the warning of respirator.
Description of drawings
Fig. 1 is first kind of embodiment overall structure of the utility model schematic diagram;
Fig. 2 is second kind of embodiment overall structure of the utility model schematic diagram;
Fig. 3 is the system architecture schematic diagram that motor loads to pressing plate under first kind of embodiment condition;
Fig. 4 be the utility model Fig. 3 along A-A to cutaway view;
Fig. 5 is the system architecture schematic diagram that second kind of embodiment condition lower electromagnet loads to pressing plate;
Fig. 6 be the utility model Fig. 5 along A-A to cutaway view;
Fig. 7 is the utility model gas distributor structural representation;
Fig. 8 is the adjustable exhaust structure schematic diagram of the utility model;
Fig. 9 is the utility model combined type overbottom pressure alarm structural representation;
Figure 10 is the utility model controller principle block diagram;
Figure 11 is the utility model controller circuitry schematic diagram;
The specific embodiment
The purpose of this utility model realizes by following technical measures:
(A) for the malleation technology that fundamentally solves the work overall process of respirator under any labour intensity condition of work and will exhale and inspiratory resistance is controlled in the scope that European Community's standard EN 145 stipulates 1, respirator adds an external force on air bag pressing plate 26 when air-breathing technical scheme has following two kinds: (1) provides motor 25 (see figure 1)s of power by what controlled by pressure sensor 9 and controller 10 by power-supply battery, through drive pulley, directive wheel 28 and driving-belt one external force is acted on (see figure 4) on the air bag pressing plate 26; (2) provide the (see figure 2) lower electromagnet 30 of power and last electromagnet 29 that an external force is acted on (see figure 6) on the air bag pressing plate 26 by what control by power-supply battery by pressure sensor 9 and controller 10; 2,, be provided with 2 and arrange that parallactic angle is the folding paper guider 13 (seeing Fig. 1, Fig. 2) of 90 degree in order to make air bag pressing plate 26 do directed movement up and down; 3, to have adopted control signal be the intermittent type pneumatic power amplifier (see figure 7) of normal pressure to automatic replenishing valve 7 (seeing Fig. 1 Fig. 2), and adjust its opening pressure; 4, air bleeding valve 21 (seeing Fig. 1, Fig. 2) adopts the adjustable structure (see figure 8), and adjusts its opening pressure.So, respirator is in each circulation of breathing; When air-breathing, under the cooperation of the effect that acts on motor driving force identical on the air bag pressing plate or electromagnetic force and positive-pressure type replenish valve and adjustable air bleeding valve, make the pressure of the respiratory circulatory system of respirator remain barotropic state with air bag presser motion direction, and the personnel's that wear along with respirator of the work overall process of 10 pairs of respirators of pressure sensor 9 and controller under any labour intensity condition of work respiratory capacity changes pressure variation the carrying out all-the-way tracking monitoring in the respirator circulatory system that is produced, and adjust the output voltage of battery at random, electric current is adjusted the driving force of motor or the size of electromagnetic force, to guarantee the barotropic state of the work overall process of respirator respiratory circulatory system under any labour intensity condition of work, and the inspiratory resistance value is controlled in the scope of European Community's standard EN 145 regulations, during expiration, by pressure sensor 9 and controller 10, stop voltage to motor 25 or electromagnet, electric current output, motor 25 driving forces or the electromagnetic force that act on the air bag pressing plate 26 disappear at random, air bag and air bag pressing plate 26 thereof are worked under the free state of no external force effect and promptly are equivalent to the duty of suction type respirator, are controlled in the scope of European Community's standard EN 145 regulations with the expiratory resistance of guaranteeing the work overall process of respirator under any labour intensity condition of work.
(B) in order significantly to reduce the expiratory resistance of the work overall process of respirator under any labour intensity condition of work, in each circulation that respirator is being breathed on the basis of the last technical measures of implementing in a, on air bag pressing plate 26, add motor-driven power or an electromagnetic force identical during expiration with the presser motion direction, make and form certain vacuum in the respiratory circulatory system of respirator, offset certain expiratory resistance with this and reach the purpose that reduces expiratory resistance: for expiration and inspiratory resistance with the work overall process of respirator under any labour intensity condition of work are controlled in the optimum value scope, respirator is in the work overall process, 10 pairs of pressure sensor 9 and controllers are worn pressure in personnel's the respiratory circulatory system that variation produced of respiratory capacity and are changed and carry out overall process random-tracking monitoring along with respirator, and adjust the output voltage of battery at random, electric current comes corrective action to guarantee that in the size of motor-driven power on the air bag pressing plate or electromagnetic force the expiration and the inspiratory resistance value of the work overall process of respirator under any labour intensity condition of work are controlled in the optimum range.
(C) automatic replenishing valve in the utility model 7 has adopted highly sensitively, and response speed is fast, and the input signal that multiplication factor is big is the intermittent type pneumatic amplifier of normal pressure.This amplifier is to cancel the (see figure 7) that the support spring 35 between diaphragm 19 and the nozzle 20 is realized in the pneumatic power amplifier of former AHY6 suction type respirator
(D) air bleeding valve of the respirator of typing production at present all adopts the structure of non-adjustable or adjustable inconvenience.The utility model respirator is provided with on former AHY6 respirator air bleeding valve and debugs governor motion (see figure 8) very easily.48 is the set screw seat, and 47 is holding screw.
(E) in order to ensure the reliable movement of air bag pressing plate 26, the utility model respirator is provided with the folding paper guider 13 (seeing Fig. 4, Fig. 6) combined with the air bag pressing plate in order to control the free degree of guiding mechanism, is provided with 2 and arranges that parallactic angles are the folding paper guiders 13 (seeing Fig. 1, Fig. 2) of 90 degree.It is little that this guider has the space of occupying, the characteristics of being convenient to arrange in the respirator integral layout.
(F) by the motion of motor 25 by the driving-belt of drive pulley transmission be the structure of two driving-belts interlocks of leading by directive wheel 28.The driving-belt that links when motor is done forward and antiport drives pressing plate and does upper and lower motion (see figure 4) at random.
(G) do upper and lower motion at random at the effect lower platen of the electromagnetic force of last electromagnet 29 and lower electromagnet 30.When last electromagnet quits work, during lower electromagnet work, pressing plate moves downward; When lower electromagnet quits work, during last work of electromagnet, pressing plate moves upward.(see figure 6).
(H) the overbottom pressure warning device has adopted the timing structure of the direct acting saving air consumption of source of the gas, air consumption is controlled at and is not more than 10L, the warning volume is not less than 90db, and time of fire alarming is in 30～60s scope: overbottom pressure alarm and Pressure gauge and conduit thereof have adopted the fabricated structure (see figure 9).The position near people's hearing organ is accomplished as far as possible in the setting of alarm in the respirator integral layout, thereby improves its warning effect (seeing Fig. 1, Fig. 2) greatly.
The utility model contains: housing 4, half mask 1, connecting box 37, expiration flexible pipe A2, inhaling hose B2, peace and quiet jar 3, air bag 5, gas cylinder 12, cooler 6, gas distributor, sensor 9, controller 10, executing agency 11, air bag pressing plate 26, two angled folding paper pressing plate guiders 13 that join with air bag pressing plate 26; Described gas distributor contains: pressure-reducing valve 43, automatic replenishing valve 7, manual replenish valve 8, dosing hole 44; Described sensor 9 joins with connecting box 37; One side of described half mask 1 communicates with peace and quiet jar 3 inlet through expiration flexible pipe A2; The opposite side of described half mask 1 communicates with the outlet of cooler 6 through inhaling hose B2; Described peace and quiet jars 3 communicate with the inlet of air bag 5; The inlet of described cooler 6 communicates with the gas outlet of air bag 5; The outlet of described manual replenish valve 8 c by the road communicates with the inlet of air bag 5; The outlet of described pressure-reducing valve 43 communicates with the inlet of automatic replenishing valve 7; Described dosing hole 44 communicates with the inlet of air bag 5 through one export pipeline a; The outlet of described automatic replenishing valve 7 b by the road communicates with the inlet of air bag 5; Described manual replenish valve 8 and pressure-reducing valve 43 air inlets communicate with the outlet of gas cylinder 12; Described executing agency 11 is electrically connected with the output of controller 10; The input of described controller 10 is electrically connected with sensor 9; The clutch end of described executing agency 11 and air bag pressing plate 26 join.Described pressing plate guider 13 is " W " shape folding paper structure.
Described controller 10 contains: amplifier AD524, multiway analog switch LF13508, sampling/retainer LF398, parallel interface PIO, A/D converter ADC0804, CPU, D/A converter DAC0832, PWM amplifier SG1731; Described amplifier input terminal is electrically connected with sensor 9; The output of described amplifier is electrically connected with the multiway analog switch input through current transformer; The output of described multiway analog switch is electrically connected with the input of sampling/retainer; The output of described sampling/retainer and the input of A/D converter join; The output of described parallel interface is electrically connected with the input of sampling/retainer and multiway analog switch; Described A/D converter is electrically connected with the output of CPU input, parallel interface; The input of described parallel interface is electrically connected with the CPU output; The output of described CPU is electrically connected with the input of D/A converter; The output of described D/A converter is electrically connected with the PWM amplifier input terminal.The port of described gas cylinder 12 is provided with Pressure gauge 14; Described Pressure gauge 14 communicates with gas cylinder 12 by Pressure gauge capillary 15; Near described Pressure gauge, is furnished with overbottom pressure alarm 16; Described overbottom pressure alarm 16 contains: have cavity 18 shell body 17, place valve 19, mouthpiece 20 in the cavity 18; Described mouthpiece 20 communicates with cavity 18 through passage 36; Described cavity 18 communicates with Pressure gauge capillary 15.Diaphragm 32 in the described automatic replenishing valve 7 is directly corresponding with nozzle 33.Be provided with adjustable air bleeding valve 21 in described peace and quiet jar 3 end; The end of described adjustable air bleeding valve 21 is provided with set screw 22; The bottom of described set screw 22 is provided with non-return valve 23; Between described non-return valve 23 vavle shelves and set screw 22, be provided with spring 24.Described sensor 9 joins with connecting box 37; Described executing agency 11 is contained: motor 25, two ends are respectively equipped with the guider 27 of directive wheel; The outputting power of described motor 25 passes to air bag pressing plate 26 by conveyer belt through directive wheel 28.Described sensor 9 joins with connecting box 37; Described executing agency 11 is contained: go up electromagnet 29, lower electromagnet 30; The described electromagnet 29 of going up is electrically connected with the output of controller 10 with the input of lower electromagnet 30; Described lower electromagnet 30 joins with housing 4; Last electromagnet 29 joins with support 31; It is described that upward electromagnet 29 is corresponding with lower electromagnet 30; One wing of described pressing plate guider 13 and a side of air bag pressing plate 26 are joined.Described sensor 9 joins with connecting box 37; Described transmission mechanism 11 contains: go up electromagnet 29, lower electromagnet 30; The described electromagnet 29 of going up is electrically connected with the output of controller 10 with the input of lower electromagnet 30; Described lower electromagnet 30 joins with housing 4; Last electromagnet 29 joins with support 31; It is described that upward electromagnet 29 is corresponding with lower electromagnet 30; One wing of described pressing plate guider 13 and a side of air bag pressing plate 26 are joined.
As shown in Figure 1, when the people wore the utility model respirator and exhales, human body is breathed out contained 4%CO approximately
2Gas flow through half mask 1, connecting box 37, expiration flexible pipe A2, outlet valve 38, enter air bag 5 for peace and quiet jar 3.Gas is equipped with CO flowing through
2During absorbent 39 peace and quiet jar, CO
2Be absorbed.When air-breathing, gas is from air bag 5 flow through cooler 18, inlet valve 40, and inhaling hose B2, connecting box 37, half mask 1 enter people's lung.During breathing, by outlet valve 38 and inlet valve 40 gas is always flowed along the same direction of closed-loop path, outlet valve 38 is opened during expiration, and inlet valve 40 cuts out, and when air-breathing, inlet valve 40 is opened, and outlet valve 38 cuts out.Gas flow direction is represented with arrow in the respirator.When working, do not put cooling agent 41 in the cooler 6 under normal temperature (below 26 ℃) condition, suck gas when flowing through cooler 6, inhaling hose A2, connecting box 37, half mask 1, the surface by these parts makes to external world's heat radiation and sucks gas and obtain cooling; When under high temperature (being higher than 26 ℃) condition, working, put into cooling agent 41 in the cooler 6, to guarantee to suck the more abundant cooling of gas.Oxygen or mist come out through cylinder valve 42 from gas cylinder 12, pressure-reducing valve 43, automatic replenishing valve 7, dosing hole 44, needed air demand when the guarantor breathes automatically when to enter air bag 5. and to work under the different labor intensity condition in order finishing, accumulate nitrogen in the anti-breather respiratory circulatory system, adopted the associating plenum system, with the automatic supply air demand of the quantitative air demand of 1.5L/min oxygen or 3.3L/min mist and 100L/min to the respirator air feed.Quantitatively air feed is enough to satisfy the usefulness in the staff's of medium work intensity work breathing, and when being engaged in more hard work, air-breathing latter stage automatic replenishing valve 7 can replenish air feed to respiratory system with the short pulse form.In addition, in respirator, also have the 3rd air feed channel promptly not by pressure-reducing valve 43, but start the air demand air feed of the mode of manual replenish valve 8 by the button of pressing manual replenish valve 8 with 80L/min.This plenum system just can use when maybe needing nitrogen that gas with source of the gas accumulate in the purge respirator respiratory circulatory system in that pressure-reducing valve is malfunctioning.In respirator when work,, when gas delivery volume during greater than the air demand of needed by human body, air bleeding valve is just opened automatically at EEP, and unnecessary gas is entered in the atmosphere.The motor 25 that power is provided by power-supply battery 45 by being come STOCHASTIC CONTROL by sensor 9 and controller 10 in each circulation of breathing is under the cooperation of the effect of an external force that applies on the air bag pressing plate 26 and positive-pressure type automatic replenishing valve 7 and automatic exhaust steam valve 21, no matter the internal pressure of respiratory circulatory system is air-breathing or exhaling, and remains barotropic state and will exhale and the inspiratory resistance value is controlled in certain scope.The gas pressure of respirator high-pressure system is indicated by Pressure gauge, the capillary 15 of high-pressure system and overbottom pressure alarm 16 are if any damaging or during poor sealing, the passage that can utilize pressure meter switch to cut off between Pressure gauge, pressure alarm and capillary and the high-pressure system leaks outside with the gas that prevents high-pressure system.When the gas pressure in the high-pressure system was reduced to 5～4Mpa, pressure alarm began to start, and the gas in the high-pressure system enters pressure alarm through capillary, and pressure alarm reminds the respirator personnel of wearing to withdraw the disaster area with the whistle more than the 90db.Automatically close behind alarm work 30～60s.
As shown in Figure 2, its structure and operation principle are except that solenoid actuated part is different with motor-driven part among Fig. 1, and all the other are all identical with Fig. 1.
As shown in Figure 4, by the motor 25 that drives by power-supply battery of pressure sensor 9 and controller 10 controls, the driving force of motor is passed to air bag pressing plate 26 and pressing plate guider 13 by the directive wheel 28 on driving-belt 46, the guider 27 and two driving-belts 47.When the motor forward turned round, driving-belt A hauled pressing plate and moves downward, and driving-belt B is in no load state; When the motor antiport, driving-belt B hauls pressing plate and does and move upward, and driving-belt A is in no load state.Driving-belt A and B and motor are a kind of linkage structures.And the pressure in the respirator respiratory circulatory system that pressure sensor and controller produce the variation along with the respiratory capacity of respirator wearer of the work overall process of respirator under any labour intensity condition of work changes and carries out the all-the-way tracking monitoring, and adjusts the driving force of adjusting motor in the output voltage, electric current of battery at random.
As shown in Figure 6, by the lower electromagnet 30 and the last electromagnet 29 that drive by power-supply battery of pressure sensor 9 and controller 10 controls, electromagnetic force is passed to air bag pressing plate 26 and pressing plate guider 13.Instantly during work of electromagnet, last electromagnet quits work, and do at the effect lower platen of lower electromagnet electromagnetic force and move downward this moment; When last work of electromagnet, lower electromagnet quits work, and do at the effect lower platen of last electromagnet electromagnetic force and move upward this moment; And pressure sensor and controller change pressure in the respirator respiratory circulatory system that produces to the respiratory capacity along with respirator wearer of the work overall process of respirator under any labour intensity condition of work and change and carry out the all-the-way tracking monitoring, and adjust the output voltage of battery, the electromagnetic force that electric current is adjusted electromagnet at random.
As shown in Figure 7, this amplifier be will be in the amplifier of AHY6 suction type respirator support spring between cancellation diaphragm 32 and the nozzle 33, wearing control signal open in usual is that the control signal that the amplifier of negative pressure is improved to normally closed type is the amplifier of normal pressure.
As shown in Figure 8, this air bleeding valve is to be provided with the governor motion of being made up of holding screw 47, set screw 22, set screw seat 48 in the air bleeding valve with AHY6 suction type respirator.Thereby air bleeding valve that can not mode is improved to adjustable air bleeding valve.
As shown in Figure 9, this combined type overbottom pressure alarm and Pressure gauge and catheter combination thereof are together.When connecting the source of the gas of respirator, gas enters alarm and Pressure gauge respectively through capillary 15, shell body, valve 19 is closed under the effect of bleed pressure, effect lower valve 19 at spring 48 when the near 5～4Mpa of bleed pressure is opened, the passage 36 of gas on valve and shell body 49 sends the whistle greater than 90db when flowing through mouthpiece 20, cut off the path alarm behind alarm work 30～60s automatically and close automatically.When alarm pressure change or debugging during alarm available adjustment valve seat 50 adjust.
As Figure 10, shown in Figure 11, inspiratory resistance that respirator produces in each respiration cycle and the expiratory resistance pressure sensor through being connected on the connecting box arrives the AD524 amplifier with analog signal transmission.
In order to reduce the transformed error of A/D converter; the analog signal that sensor is sent here is by having low maladjustment voltage (50 μ V); low maladjustment voltage drift (0.5 μ V/ ℃); low noise (0.3 μ V (P-P), 0.1～10Hz), low nonlinearity (0.003%; gain is 1 o'clock); high cmrr (120dB, gain is 1000 o'clock), gain bandwidth are that 25MHz and the gain of the AD524 integrated programmable with input protection function control measuring amplifier amplify processing.
Need aperture time of regular hour A/D converter, the big transformed error the when frequency input signal that is caused improves because of transform to digital quantity output that conversion finishes from startup when preventing to carry out analog to digital conversion because of analog signal; Carry out timesharing control in order in the analog output channel, to obtain a smooth signal or multichannel, enter by CT712 chip and LF13508 multiway analog switch through amplified analog signal that to have sample rate fast, (sampling time is when being 6 μ s for the precision height, precision can reach ± and 0.01%), decrease speed slow (0.5mV/ms), low input drift, input characteristics is constant under the hold mode, at the sampling or the LF398 sampling/retainer of characteristics such as high power supply inhibition during hold mode, thereby guarantee that A/D converter when beginning conversion with the maintenance of signal level with can follow the tracks of the variation of input signal again behind the A/D converter EOC, promptly is in hold mode to input signal.
Microprocessor CPU controls and coordinates the conversion of A/D converter by parallel interface PIO.Its course of work is as follows: the output signal control multiway analog switch LF13508 of parallel interface PIO also selects one of them passage; The output signal of parallel interface PIO makes LF398 sampling/retainer be operated in hold mode; By the conversion of microprocessor CPU startup A/D converter, the EOC signal of A/D converter is by parallel interface PIO input microprocessor CPU; Read in the conversion value of A/D converter by microprocessor CPU.
It is 100 μ s that the utility model has adopted conversion time, and conversion accuracy is ± 1LSB, can directly be connected with the numerical value bus of microprocessor CPU, and operating voltage is ± 5V that clock frequency is 8 A/D conversion chips of the ADC0804 successive approximation of 606KHz.
The interface of ADC0804 A/D converter and microprocessor CPU has following characteristics:
(1) result of A/D conversion will be by data output pin input microprocessor CPU.The ADC0804 A/D converter is the ternary latch of band output, and its data output directly links to each other with the microprocessor CPU data/address bus, and uses IN A, and (Port) instruction is once read.(2) the ADC0804 A/D converter is the pulse enable conversion chip, starts on conversion input pin PCS and the WR at it to add a negative pulse simultaneously, can start conversion.CS is a sheet choosing end, is connected on the output of address decoder, and WR is connected on the IOW (IOW=IORQ WR), is independently port addressing system.Therefore, microprocessor CPU utilizes an instruction OUT (Port), and A just can add a negative pulse simultaneously on CS, WR, and starts conversion.(3) the EOC signal INTR of ADC0804 A/D converter receives on the B mouth of PIO parallel interface.The B mouth of PIO parallel interface is set prosecutor formula on the throne, allows to interrupt.When EOC, INTR causes that by high step-down parallel interface PIO interrupts to the microprocessor application.Have no progeny in the microprocessor CPU response, in interrupt service routine, get final product sense data.The conversion of A/D converter and the work of microprocessor CPU are carried out simultaneously, thereby save the time of microprocessor CPU greatly.
The utility model adopted have can carry out twice buffer operation function by 8 input registers, 8 DAC registers and 8 DAC0832 Digital To Analog Converts that A/D converter is formed.This converter and microprocessor CPU connection characteristics are to allow WR2 and XFER ground connection, so any moment of DAC register is all effective, and input register plays buffering and latchs effect.
The DAC0832 A/D converter will convert the control analog quantity to from the digital quantity of microprocessor CPU output.The integrated PWM pulse width modulation amplifier of SG1731 of characteristics such as the control analog quantity is operated on off state by having power tube, and pipe consumption is little is controlled department of executing agency clothes motor and is rotated and reverse operation and regulate its speed or control the upward operation of electromagnet 29 and lower electromagnet 30.
Claims (10)
1, a kind of isolated regenerative positive pressure oxygen or mist respirator is characterized in that: contain: housing (4), half mask (1), connecting box (37), expiration flexible pipe (A2), inhaling hose (B2), peace and quiet jar of (3), air bag (5), gas cylinder (12), cooler (6), gas distributor, sensor (9), controller (10), executing agency (11), air bag pressing plate (26), two angled folding paper pressing plate guiders (13) that join with air bag pressing plate (26); Described gas distributor contains: pressure-reducing valve (43), automatic replenishing valve (7), manual replenish valve (8), dosing hole (44); Described sensor (9) joins with connecting box (37); One side of described half mask (1) communicates through the inlet of expiration flexible pipe (A2) with peace and quiet jar (3); The opposite side of described half mask (1) communicates through the outlet of inhaling hose (B2) with cooler (6); Described peace and quiet jar (3) communicate with the inlet of air bag (5); The inlet of described cooler (6) communicates with the gas outlet of air bag (5); The outlet of described manual replenish valve (8) (c) by the road communicates with the inlet of air bag (5); The outlet of described pressure-reducing valve (43) communicates with the inlet of automatic replenishing valve (7); Described dosing hole (44) communicates through the inlet of one export pipeline (a) with air bag (5); The outlet of described automatic replenishing valve (7) (b) by the road communicates with the inlet of air bag (5); Described manual replenish valve (8) and pressure-reducing valve (43) air inlet communicate with the outlet of gas cylinder (12); Described executing agency (11) is electrically connected with the output of controller (10); The input of described controller (10) is electrically connected with sensor (9); The clutch end of described executing agency (11) and air bag pressing plate (26) join.
2, isolated regenerative positive pressure oxygen according to claim 1 or mist respirator is characterized in that: described pressing plate guider (13) is " W " shape folding paper structure.
3, isolated regenerative positive pressure oxygen according to claim 1 or mist respirator, it is characterized in that: described controller (10) contains: amplifier, multiway analog switch, sampling/retainer, parallel interface, A/D converter, CPU, D/A converter, PWM amplifier; Described amplifier input terminal is electrically connected with sensor (9); The output of described amplifier is electrically connected with the multiway analog switch input through current transformer; The output of described multiway analog switch is electrically connected with the input of sampling/retainer; The output of described sampling/retainer is electrically connected with the input of A/D converter; The output of described parallel interface is electrically connected with the input of sampling/retainer and multiway analog switch; Described A/D converter is electrically connected with the output of CPU input, parallel interface; The input of described parallel interface is electrically connected with the CPU output; The output of described CPU is electrically connected with the input of D/A converter; The output of described D/A converter is electrically connected with the PWM amplifier input terminal.
4, isolated regenerative positive pressure oxygen according to claim 1 and 2 or mist respirator is characterized in that: be provided with Pressure gauge (14) in the port of described gas cylinder (12); Described Pressure gauge (14) communicates with gas cylinder (12) by Pressure gauge capillary (15); Near described Pressure gauge, is furnished with overbottom pressure alarm (16); Described overbottom pressure alarm (16) contains: have cavity (18) shell body (17), place valve (19), mouthpiece (20) in the cavity (18); Described mouthpiece (20) communicates with cavity (18) through passage (36); Described cavity (18) communicates with Pressure gauge capillary (15).
5, isolated regenerative positive pressure oxygen according to claim 1 and 2 or mist respirator is characterized in that: the diaphragm (32) in the described automatic replenishing valve (7) is directly corresponding with nozzle (33).
6, isolated regenerative positive pressure oxygen according to claim 1 and 2 or mist respirator is characterized in that: the end in described peace and quiet jar (3) is provided with adjustable air bleeding valve (21); The end of described adjustable air bleeding valve (21) is provided with set screw (22); The bottom of described set screw (22) is provided with non-return valve (23); Between described non-return valve (23) vavle shelf and set screw (22), be provided with spring (24).
7, isolated regenerative positive pressure oxygen according to claim 1 and 2 or mist respirator is characterized in that: described sensor (9) joins with connecting box (37); Described executing agency (11) is contained: motor (25), two ends are respectively equipped with the guider (27) of directive wheel; The outputting power of described motor (25) passes to air bag pressing plate (26) by conveyer belt through directive wheel (28).
8, isolated regenerative positive pressure oxygen according to claim 1 and 2 or mist respirator is characterized in that: described sensor (9) joins with connecting box (37); Described executing agency (11) is contained: go up electromagnet (29), lower electromagnet (30); The described electromagnet (29) of going up is electrically connected with the output of controller (10) with the input of lower electromagnet (30); Described lower electromagnet (30) joins with housing (4); Last electromagnet (29) joins with support (31); It is described that upward electromagnet (29) is corresponding with lower electromagnet (30); One side of one wing of described pressing plate guider (13) and air bag pressing plate (26) is joined.
9, isolated regenerative positive pressure oxygen according to claim 3 or mist respirator is characterized in that: described sensor (9) joins with connecting box (37); Described transmission mechanism (11) contains: go up electromagnet (29), lower electromagnet (30); The described electromagnet (29) of going up is electrically connected with the output of controller (10) with the input of lower electromagnet (30); Described lower electromagnet (30) joins with housing (4); Last electromagnet (29) joins with support (31); It is described that upward electromagnet (29) is corresponding with lower electromagnet (30); One side of one wing of described pressing plate guider (13) and air bag pressing plate (26) is joined.
10, isolated regenerative positive pressure oxygen according to claim 4 or mist respirator is characterized in that: described sensor (9) joins with connecting box (37); Described executing agency (11) is contained: motor (25), two ends are respectively equipped with the guiding wheel carrier (27) of directive wheel; The outputting power of described motor (25) passes to air bag pressing plate (26) by conveyer belt through directive wheel (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251458 CN2500327Y (en) | 2001-11-16 | 2001-11-16 | Isolated regeneration type positive pressure oxygen or mixed gas respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01251458 CN2500327Y (en) | 2001-11-16 | 2001-11-16 | Isolated regeneration type positive pressure oxygen or mixed gas respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2500327Y true CN2500327Y (en) | 2002-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01251458 Expired - Fee Related CN2500327Y (en) | 2001-11-16 | 2001-11-16 | Isolated regeneration type positive pressure oxygen or mixed gas respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2500327Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105498056A (en) * | 2015-12-24 | 2016-04-20 | 聂文军 | Respiratory circulation instrument |
| CN106798981A (en) * | 2015-11-26 | 2017-06-06 | 金万善 | A kind of respirator |
| CN106913965A (en) * | 2015-12-25 | 2017-07-04 | 金万善 | A kind of respirator |
| CN108671437A (en) * | 2018-05-25 | 2018-10-19 | 浙江恒泰安全设备有限公司 | Novel oxygen respirator |
| CN110420404A (en) * | 2019-07-23 | 2019-11-08 | 浙江恒泰安全设备有限公司 | A kind of oxygen breathing apparatus with novel ventilation structure |
| CN113543854A (en) * | 2018-11-23 | 2021-10-22 | 德泽加控股乌克兰有限责任公司 | Heat insulation respirator |
-
2001
- 2001-11-16 CN CN 01251458 patent/CN2500327Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106798981A (en) * | 2015-11-26 | 2017-06-06 | 金万善 | A kind of respirator |
| CN105498056A (en) * | 2015-12-24 | 2016-04-20 | 聂文军 | Respiratory circulation instrument |
| CN105498056B (en) * | 2015-12-24 | 2018-03-23 | 聂文军 | A kind of respiratory cycle device |
| CN106913965A (en) * | 2015-12-25 | 2017-07-04 | 金万善 | A kind of respirator |
| CN108671437A (en) * | 2018-05-25 | 2018-10-19 | 浙江恒泰安全设备有限公司 | Novel oxygen respirator |
| CN113543854A (en) * | 2018-11-23 | 2021-10-22 | 德泽加控股乌克兰有限责任公司 | Heat insulation respirator |
| CN110420404A (en) * | 2019-07-23 | 2019-11-08 | 浙江恒泰安全设备有限公司 | A kind of oxygen breathing apparatus with novel ventilation structure |
| CN110420404B (en) * | 2019-07-23 | 2021-11-09 | 浙江恒泰安全设备有限公司 | Oxygen respirator with ventilation structure |
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