CN108776092A - Mask respiratory resistance test machine - Google Patents
Mask respiratory resistance test machine Download PDFInfo
- Publication number
- CN108776092A CN108776092A CN201810313029.3A CN201810313029A CN108776092A CN 108776092 A CN108776092 A CN 108776092A CN 201810313029 A CN201810313029 A CN 201810313029A CN 108776092 A CN108776092 A CN 108776092A
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- Prior art keywords
- personal computer
- industrial personal
- cabinet
- outlet
- resistance test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
The invention discloses a kind of mask respiratory resistance test machine, drip irrigation device includes a kind of mask respiratory resistance test machine, including cabinet, detection device and head mould, further includes the industrial personal computer of connecting detection device, and the detection device includes:High pressure blower is provided with intake interface and outlet interface；Switching valve, pipeline connect the intake interface and outlet interface of high pressure blower, including first outlet, for switching first outlet connection intake interface or outlet interface；Flowmeter connects first outlet, the gas flow rate based on first outlet, output detection flow velocity signal；Corrugated hose, one end connect flowmeter, and the other end is connected on head mould；Differential manometer is connected to corrugated hose, for detecting the air pressure in corrugated hose, and exports corresponding air pressure signal；The present invention has the operation for simplifying detection mask resistance, promotes the effect of detection efficiency.
Description
Technical field
The present invention relates to mask test devices, and more specifically it is related to a kind of mask respiratory resistance test machine.
Background technology
GB2626-2006《Protective respirator suction-self filtering type against particle respirator》National Specification mask exhale
Suction drag test condition is：In the case where air-breathing and expiration ventilation flow rate are set as (85 ± 1) L/min, mask is worn on
On head mould, the mask respiratory resistance test method of pressure difference (i.e. respiratory resistance) before and after mask is worn in test.
But existing test device is complicated for operation, staff needs in being completed expiration and air-breathing handoff procedure
Switch tracheae, handoff procedure is more laborious, while there is likely to be the risks of tracheae wrong；Detection process reading is all made of simultaneously
Range estimation reading, measurement accuracy is not high, error in reading is larger.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of mask respiratory resistance test machine,
Advantage is to simplify the operation of detection mask resistance, promotion detection efficiency.
To achieve the above object, the present invention provides following technical solutions：A kind of mask respiratory resistance test machine, including cabinet
Body, detection device and head mould, further include the industrial personal computer of connecting detection device, and the detection device includes:
High pressure blower is provided with intake interface and outlet interface；
Switching valve, pipeline connect the intake interface and outlet interface of high pressure blower, including first outlet, go out for switching first
Mouth connection intake interface or outlet interface；
Flowmeter connects first outlet, the gas flow rate based on first outlet, output detection flow velocity signal；
Corrugated hose, one end connect flowmeter, and the other end is connected on head mould；
Differential manometer is connected to corrugated hose, for detecting the air pressure in corrugated hose, and exports corresponding air pressure signal；
The industrial personal computer connection switching valve, flowmeter and differential manometer, the industrial personal computer receive air pressure signal, and the industrial personal computer is based on
Detection flow velocity signal control switching valve switches over.
By using above-mentioned technical proposal, since high pressure blower includes intake interface and outlet interface, when high pressure air blast
When machine starts, intake interface will generate the power for being used for air-breathing since a large amount of air enters；Outlet interface is due to a large amount of empty
Gas is discharged, and will generate the power for expiration.Therefore work as switching Vavle switching first outlet connection intake interface or outlet interface,
The airflow direction that first outlet can be controlled just can be achieved at the same time air-breathing and expiration using an equipment.
Due to when mask resistance detects, having specific requirement, flowmeter that can detect the air velocity in corrugated hose
Pipeline interior air-flow speed；Industrial personal computer connects flowmeter and based on detection flow velocity signal, after detection flow velocity signal is eligible, from
Dynamic control switching valve.There is no need to testing staff to go to switch, the expiratory resistance and inspiratory resistance of automation realized to mask
It tests simultaneously.When detecting to operating personnel, it is only necessary to by being worn on head mould for mask sealing, it is detected, it can be in industry control
With the help of machine, while the expiratory resistance and inspiratory resistance of mask are obtained, simplify the operation of detection mask resistance, promotes detection
Efficiency.
The present invention is further arranged to：Standard flow rate range is preset in the industrial personal computer, when the detection flow velocity signal
After the preset detection duration of the standard flow rate range, the industrial personal computer obtains air pressure signal.
It is default according to national standard since the detection of mask resistance has national standard by using above-mentioned technical proposal
Flow rates so that the mask resistance that detected meets national standard.Gas is just obtained after detection duration is set due to industrial personal computer
Signal is pressed, ensures the air pressure signal that the air pressure signal obtained is stable.
The present invention is further arranged to：It is connected with frequency converter on the high pressure blower；The industrial personal computer connects frequency converter,
And based on standard flow rate range and flow velocity signal is detected to frequency converter output regulation signal.
By using above-mentioned technical proposal, industrial personal computer is adjusted the rotating speed of high pressure blower by connection frequency converter,
And by comparing standard flow rate range and detection flow velocity signal, ensures the flow velocity that high pressure blower provides, change in environment
In the case of, the rotating speed of high pressure blower also can be quickly adjusted according to demand.
The present invention is further arranged to：The standard flow rate ranging from 84 to 86L/min；When the detection flow velocity signal is low
In standard flow rate range, the industrial personal computer promotes high pressure blower rotating speed to frequency converter output regulation signal, when the detection stream
Fast signal is higher than standard flow rate range, and the industrial personal computer reduces high pressure blower rotating speed to frequency converter output regulation signal.
By using above-mentioned technical proposal, industrial personal computer is according to detection flow velocity signal and standard flow rate scale relationships, industrial personal computer
The rotating speed that high pressure blower is controlled to frequency converter output regulation signal is promoted or is declined, and is dynamic regulation, therefore whole detection
It can ensure that detecting flow velocity will not mutate in the process.
The present invention is further arranged to：When industrial personal computer obtains air pressure signal for the first time, the industrial personal computer controls switching valve
It switches over, when industrial personal computer second obtains air pressure signal, the industrial personal computer is by frequency converter by the rotating speed of high pressure blower
It is adjusted to preset standby rotating speed.
By using above-mentioned technical proposal, when industrial personal computer obtains first time air pressure signal, industrial personal computer control switching valve into
Row switching, by switching from the pattern of the expiration of the pattern switching of air-breathing.And when second of acquisition air pressure signal of industrial personal computer, industry control
Machine is by by the rotational speed regulation of high pressure blower to preset standby rotating speed, saving electric energy.
The present invention is further arranged to：It is in vertically three-layer set, the high pressure blower setting in the cabinet
In the bottom of cabinet, the switching valve is set to the middle level of cabinet, and the industrial personal computer is set to the top layer of cabinet.
By using above-mentioned technical proposal, the setting of cabinet multilayer, and different devices is placed to different positions, it can
Lookup convenient to overhaul.In addition high pressure blower heavier-weight places bottom so that cabinet entirety steadily of centre of gravity.Industrial personal computer needs
Operation is placed top layer and is conveniently operated.
The present invention is further arranged to：The head mould is set to the outside top of cabinet, and connection is provided on the head mould
The test of industrial personal computer switchs.
By using above-mentioned technical proposal, test switch is ensureing mask for starting the test to mask, testing staff
In the case of sealing, presses test switch and be detected, avoid invalid detection.And test switch and be arranged on head mould, it is convenient for
Tester presses after mask is put on.
The present invention is further arranged to：The industrial personal computer includes industrial PC and the setting being set on front side of the top layer of cabinet
PLC controller on rear side of cabinet, the cabinet correspond to industrial PC and are provided with display window, and the rear side of the cabinet detachably connects
It is connected to backboard.
By using above-mentioned technical proposal, the industrial PC of industrial personal computer is set to front side, and can be by cabinet on front side of
Display window is directly observed；When detecting convenient for tester, more comprehensive understanding is carried out to the parameter of mask resistance, and
PLC controller is arranged in rear side, after backboard is removed, easily facilitates staff and overhauls.
The present invention is further arranged to：Several exhaust fans is provided on the side wall of the cabinet.
By using above-mentioned technical proposal, exhaust fan accelerates the air circulation in cabinet so that cabinet body temperature will not mistake
It is high.
The present invention is further arranged to：The cabinet further includes the Temperature Humidity Sensor for connecting industrial personal computer.
By using above-mentioned technical proposal, Temperature Humidity Sensor detects humiture, when ensureing detection mask resistance, can locate
Under the humiture for being suitble to detection.
In conclusion the present invention has the following advantages：
1, mask air-breathing and expiratory resistance test are automatically switched, and promote the detection efficiency of mask breathing atmidometer；
2, built-in air source is not necessarily to external gas source, practical and convenient；
3, setting test switch on head mould, is pressed convenient for tester after mask is put on.
Description of the drawings
Fig. 1 is the present embodiment connection schematic diagram；
Fig. 2 is that the present embodiment highlights exploded perspective view backwards；
Fig. 3 is that the present embodiment highlights positive structural schematic diagram.
Reference sign：1, cabinet；2, industrial personal computer；3, detection device；4, head mould；5, high pressure blower；6, switching valve；
7, flowmeter；8, corrugated hose；9, differential manometer；10, backboard；11, frequency converter；12, test switch；13, PLC controller；14, work
Control computer；15, display window；16, operating platform；17, Temperature Humidity Sensor；18, intake interface；19, outlet interface；20, first
Import；21, the second import；22, first outlet；23, second outlet；24, exhaust fan.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment, a kind of mask respiratory resistance test machine, as shown in Figure 1, 2, including cabinet 1, industrial personal computer 2, detection device 3
With head mould 4.Industrial personal computer 2 and detection device 3 are arranged in cabinet 1, and head mould 4 is arranged outside cabinet 1, by by test sample mouth when detection
Cover is worn on head mould 4, starts detection device 3 by industrial personal computer 2, can obtain the Resistance Value that test sample mask is exhaled in industrial personal computer 2
With the Resistance Value of air-breathing.
Specifically, as shown in Figure 1, detection device 3 includes the high pressure blower 5 for providing expiration or air-breathing power, is used for
Switch switching valve 6, the flowmeter 7 for detecting the flow rate of gas in pipeline and the connection of air source expiration or suction condition
Corrugated hose 8 on to head mould 4.High pressure blower 5, switching valve 6, flowmeter 7 and corrugated hose 8 are sequentially connected.On corrugated hose 8
It is connected with differential manometer 9, after putting on test sample mask on head mould 4 so that corrugated hose 8 forms a confined air with test sample mask
Between, differential manometer 9 can detect the air pressure change in this confined space, and export corresponding air pressure signal to industrial personal computer 2.
As shown in Figure 1, 2,1 inside of cabinet is three-layer set, and the rear side of cabinet 1 is removably connected with backboard 10, passes through
Backboard 10 is removed, 1 three layers of cabinet can be observed simultaneously, be overhauled convenient for staff.Further, the side of cabinet 1
It is provided with several exhaust fans 24 on wall, the quantity of exhaust fan 24 is two in the present embodiment, is separately positioned on 1 side wall of cabinet
The upper side and lower side.Exhaust fan 24 accelerates the air circulation in cabinet 1 so that temperature will not be excessively high in cabinet 1.
As shown in Figure 1, 2,5 bolt of high pressure blower is fixedly connected on the bottom in cabinet 1.High pressure blower 5 include into
Gas interface 18 and outlet interface 19, when high pressure blower 5 starts, intake interface 18 will generate use since a large amount of air enters
In the power of air-breathing；Outlet interface 19 will generate the power for expiration since a large amount of air is discharged.On high pressure blower 5
It is connected with frequency converter 11, frequency converter 11 is connected with the motor in high pressure blower 5, is used for the rotating speed of high pressure blower 5.
As shown in Figure 1, 2, switching valve 6 is arranged on the middle level inside cabinet 1, including four interfaces.Four interface difference
For the first import 20, the second import 21, first outlet 22 and second outlet 23, the first import 20 passes through pipeline and high pressure blower
5 18 pipeline of intake interface connection, the second import 21 are connected by pipeline with 19 pipeline of outlet interface of high pressure blower 5, the
One outlet 22 is connected with pipeline on flowmeter 7, and second outlet 23 is directly connected to extraneous air.Switching valve 6 is motor-driven valve, including the
20 and of first state and the first import that one import 20 is connected with first outlet 22, the second import 21 is connected with second outlet 23
The second state that second outlet 23 is connected, the second import 21 is connected with first outlet 22.When switching valve 6 is not powered on, switching valve 6
In first state, high pressure blower 5 will provide the power of air-breathing for test sample mask；And when switching valve 6 is powered, switching valve 6
In the second state, high pressure blower 5 will provide the power of expiration for test mask.
As shown in Figure 1, 2, flowmeter 7 is arranged on the middle level inside cabinet 1, obtains by the gas stream on flowmeter 7
Dynamic speed, and flowmeter 7 connects industrial personal computer 2 by data line, can convert the data that gas flows to output detection stream
Fast signal passes to industrial personal computer 2.
As shown in Figure 1, 2, head mould 4 is fixed on the top of cabinet 1, and corrugated hose 8 is penetrated from the bottom of head mould 4 to head mould 4
In be connected to the mouth of head mould 4.The neck of head mould 4 is provided with test switch 12, and test switch 12 is connected with industrial personal computer 2,
Test sample mask being worn on head mould 4, and after determining sealing, by pressing test switch 12 so that industrial personal computer 2 receives instruction,
Test sample mask is detected.
As shown in Figure 1, 2, frequency converter 11 is connect with industrial personal computer 2, and standard flow rate range is preset in industrial personal computer 2, works as detection
After flow velocity signal is in the preset detection duration of standard flow rate range, industrial personal computer 2 obtains air pressure signal.And when detection flow velocity signal
Less than standard flow rate range, industrial personal computer 2 promotes 5 rotating speed of high pressure blower to 11 output regulation signal of frequency converter, when detection flow velocity
Signal is higher than standard flow rate range, and industrial personal computer 2 reduces by 5 rotating speed of high pressure blower to 11 output regulation signal of frequency converter.This implementation
In example, standard flow rate ranging from 84 to 86L/min, detection time is 5 seconds.Standard flow rate is according to national standard preset flow rate model
It encloses so that the mask resistance that detected meets national standard.
As shown in Figure 2,3, industrial personal computer 2 is installed on the upper layer of cabinet 1, and industrial personal computer 2 includes PLC controller 13 in the present embodiment
With industrial PC 14, industrial PC 14 is set to the front side of cabinet 1, and 1 side wall of cabinet corresponds to industrial PC 14 and is provided with display window
15, cabinet 1 is fixed with operating platform 16 in the lower horizontal of display window 15, and industrial PC 14 can show that differential manometer 9 is exported
Air pressure signal corresponding to numerical value, observed convenient for testing crew.
As shown in Fig. 2, PLC controller 13 is set on the inside of 1 upper layer of cabinet.It is frequency converter 11, flowmeter 7, switching valve 6, micro-
Pressure meter 9 and test switch 12, are connected in PLC controller 13.In addition, the middle level inside cabinet 1 further includes connection industrial personal computer 2
Temperature Humidity Sensor 17.Temperature Humidity Sensor 17 detects humiture, when ensureing detection mask resistance, is at and is suitble to detection
Under humiture.
The sealing of test sample mask is worn on head mould 4 by detection process, presses test switch 12 so that PLC controller 13 obtains
Test the signal that switch 12 exports.PLC controller 13 exports control signal to frequency converter 11 so that high pressure blower 5 is promoted to
It is suitble to the rotating speed of standard flow rate range, for switching valve 6 in being not powered in first state, high pressure blower 5 will be test sample at this time
Mask provides the dynamic regime of air-breathing, when the numerical value that differential manometer 9 exports turned within 5 seconds time in standard flow rate range
Speed, then PLC controller 13 air pressure signal that differential manometer 9 exports is recorded as inspiratory resistance value.And PLC controller 13 is carrying out one
After secondary counting, electric signal is exported to switching valve 6 so that switching valve 6 is in the second state being powered.
High pressure blower 5 will provide the dynamic regime of expiration for test sample mask later, and differential manometer 9 detects in expiration pipeline
Atmospheric pressure value, and by the digital data transmission of atmospheric pressure value to PLC controller 13, when time of the numerical value that differential manometer 9 exports at 5 seconds
The interior rotating speed in standard flow rate range, then be recorded as expiratory resistance value by the atmospheric pressure value that differential manometer 9 exports.And industrial personal computer 2
By frequency converter 11 by the rotational speed regulation of high pressure blower 5 to preset standby rotating speed.Standby rotating speed is generally high pressure blower 5
Machine runs rotating speed when lowest power, to save electric energy.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to restrict the invention, all design structures in the present invention
Within think of, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of mask respiratory resistance test machine, including cabinet (1), detection device (3) and head mould (4), it is characterised in that：Also wrap
The industrial personal computer (2) of connecting detection device (3) is included, the detection device (3) includes:
High pressure blower (5) is provided with intake interface (18) and outlet interface (19)；
Switching valve (6), pipeline connect the intake interface (18) and outlet interface (19) of high pressure blower (5), including first outlet
(22), for switching first outlet (22) connection intake interface (18) or outlet interface (19)；
Flowmeter (7), connection first outlet (22) are based on the gas flow rate of first outlet (22), output detection flow velocity signal；
Corrugated hose (8), one end connect flowmeter (7), and the other end is connected on head mould (4)；
Differential manometer (9) is connected to corrugated hose (8), for detecting the air pressure in corrugated hose (8), and exports corresponding air pressure
Signal；
Industrial personal computer (2) the connection switching valve (6), flowmeter (7) and differential manometer (9), the industrial personal computer (2) receive air pressure letter
Number, the industrial personal computer (2) is based on detection flow velocity signal control switching valve (6) and switches over.
2. mask respiratory resistance test machine according to claim 1, it is characterised in that：It is preset in the industrial personal computer (2)
Standard flow rate range, after the detection flow velocity signal is in the standard flow rate range preset detection duration, the industry control
Machine (2) obtains air pressure signal.
3. mask respiratory resistance test machine according to claim 2, it is characterised in that：Connect on the high pressure blower (5)
It is connected to frequency converter (11)；The industrial personal computer (2) connection frequency converter (11), and based on standard flow rate range and detection flow velocity signal to
Frequency converter (11) output regulation signal.
4. mask respiratory resistance test machine according to claim 3, it is characterised in that：The standard flow rate ranging from 84 to
86L/min；When the detection flow velocity signal is less than standard flow rate range, the industrial personal computer (2) exports to frequency converter (11) and adjusts
Signal boost high pressure blower (5) rotating speed, when the detection flow velocity signal be higher than standard flow rate range, the industrial personal computer (2) to
Frequency converter (11) output regulation signal reduces high pressure blower (5) rotating speed.
5. mask respiratory resistance test machine according to claim 3, it is characterised in that：When industrial personal computer (2) obtains for the first time
When air pressure signal, industrial personal computer (2) the control switching valve (6) switches over, and air pressure signal is obtained second when industrial personal computer (2)
When, the industrial personal computer (2) is by frequency converter (11) by the rotational speed regulation of high pressure blower (5) to preset standby rotating speed.
6. mask respiratory resistance test machine according to claim 1, it is characterised in that：Along vertical side in the cabinet (1)
To in three-layer set, the high pressure blower (5) is set to the bottom of cabinet (1), and the switching valve (6) is set to cabinet (1)
Middle level, the industrial personal computer (2) is set to the top layer of cabinet (1).
7. mask respiratory resistance test machine according to claim 6, it is characterised in that：The head mould (4) is set to cabinet
(1) outside top is provided with the test switch (12) of connection industrial personal computer (2) on the head mould (4).
8. mask respiratory resistance test machine according to claim 6, it is characterised in that：The industrial personal computer (2) includes setting
Industrial PC (14) on front side of the top layer of cabinet (1) and the PLC controller (13) being set on rear side of cabinet (1), the cabinet
(1) corresponding industrial PC (14) is provided with display window (15), and backboard (10) is removably connected on rear side of the cabinet (1).
9. mask respiratory resistance test machine according to claim 6, it is characterised in that：It is set on the side wall of the cabinet (1)
It is equipped with several exhaust fan (24).
10. mask respiratory resistance test machine according to claim 1, it is characterised in that：The cabinet (1) further includes connection
The Temperature Humidity Sensor (17) of industrial personal computer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810313029.3A CN108776092A (en) | 2018-04-09 | 2018-04-09 | Mask respiratory resistance test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810313029.3A CN108776092A (en) | 2018-04-09 | 2018-04-09 | Mask respiratory resistance test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108776092A true CN108776092A (en) | 2018-11-09 |
Family
ID=64033856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810313029.3A Pending CN108776092A (en) | 2018-04-09 | 2018-04-09 | Mask respiratory resistance test machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108776092A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320141A (en) * | 2019-05-10 | 2019-10-11 | 中国建筑科学研究院有限公司 | Device and method for detecting air supply quantity and purification performance of electric mask |
| IT202100006671A1 (en) | 2021-03-19 | 2022-09-19 | Ca Tech S R L | SYSTEM FOR TESTING AND INSPECTION OF FACE MASKS |
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| CN203750060U (en) * | 2014-01-10 | 2014-08-06 | 杭州可普信实业有限公司 | Testing device of fire protection filtering type self-saving breathing apparatus |
| CN104922821A (en) * | 2015-06-02 | 2015-09-23 | 刘�英 | Alarm method and device of respiratory protection article |
| CN106092857A (en) * | 2016-08-11 | 2016-11-09 | 青岛众瑞智能仪器有限公司 | A kind of mask particulate matter filter efficiency and respiratory resistance detection device |
| CN206095883U (en) * | 2016-08-19 | 2017-04-12 | 浙江省纺织测试研究院 | Static respiratory resistance of gauze mask tries on clothes from dynamic testing and puts |
| CN107044946A (en) * | 2016-10-10 | 2017-08-15 | 中国计量大学 | A kind of dynamic respiratory resistance automatic testing equipment of mouth mask |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059348A (en) * | 1990-12-31 | 1991-10-22 | The United States Of America As Represented By The Secretary Of The Army | Method for measuring the efficiency of gas mask filters |
| CN203750060U (en) * | 2014-01-10 | 2014-08-06 | 杭州可普信实业有限公司 | Testing device of fire protection filtering type self-saving breathing apparatus |
| CN104922821A (en) * | 2015-06-02 | 2015-09-23 | 刘�英 | Alarm method and device of respiratory protection article |
| CN106092857A (en) * | 2016-08-11 | 2016-11-09 | 青岛众瑞智能仪器有限公司 | A kind of mask particulate matter filter efficiency and respiratory resistance detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320141A (en) * | 2019-05-10 | 2019-10-11 | 中国建筑科学研究院有限公司 | Device and method for detecting air supply quantity and purification performance of electric mask |
| IT202100006671A1 (en) | 2021-03-19 | 2022-09-19 | Ca Tech S R L | SYSTEM FOR TESTING AND INSPECTION OF FACE MASKS |
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Application publication date: 20181109 |
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