CN212904413U - Gauze mask detects machine - Google Patents
Gauze mask detects machine Download PDFInfo
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- CN212904413U CN212904413U CN202021425106.3U CN202021425106U CN212904413U CN 212904413 U CN212904413 U CN 212904413U CN 202021425106 U CN202021425106 U CN 202021425106U CN 212904413 U CN212904413 U CN 212904413U
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- diverter valve
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- 238000001514 detection method Methods 0.000 claims abstract description 65
- 238000007664 blowing Methods 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000000241 respiratory effect Effects 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims description 47
- 239000000443 aerosol Substances 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 22
- 238000000034 method Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
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Abstract
The utility model discloses a mask detects machine, including the head mould, controller and respiratory resistance detection mechanism, respiratory resistance detection mechanism includes the diverter valve, air exhaust device, air-blowing device, first pressure sensor and second pressure sensor, the diverter valve, air exhaust device, air-blowing device, first pressure sensor and second pressure sensor and controller electric connection, the first end and the head mould of diverter valve are connected, the second end and the air exhaust device of diverter valve are connected, the third end and the air-blowing device of diverter valve are connected, first pressure sensor sets up in the head mould, second pressure sensor sets up in the environment that the head mould was located. The utility model discloses a respiratory resistance detection mechanism adds the air exhaust device with air-blowing device collaborative work, compares with the equipment that uses single air-blower, need not constantly to change device running state, improves the stability of pipe-line system operation effectively for the complete machine operation is more stable, and then makes the degree of accuracy that respiratory resistance detected improve.
Description
Technical Field
The utility model relates to a gauze mask check out test set technical field specifically, relates to a gauze mask detects machine.
Background
The national standard of GB2626-2006 respiratory protection articles self-priming filtering type particulate-proof respirator prescribes that the breathing resistance test conditions of the mask are as follows: a method for testing the breathing resistance of a mask, in which the mask is worn on a head model under the condition that the flow rates of inhalation and exhalation ventilation are set to (85 +/-1) L/min, and the pressure difference (i.e. breathing resistance) before and after wearing the mask is tested.
The existing mask detection device is complex in operation, a worker needs to switch the air pipe to test another resistance after the worker finishes the test of expiration or inspiration resistance, the switching process is complex and laborious, and meanwhile, the risk of wrong connection of the air pipe is possibly caused. To above-mentioned problem, current gauze mask test machine, its detection device includes the high-pressure air-blower, the device has air inlet pipeline and air outlet pipeline, and air inlet pipeline and air outlet pipeline all are connected with the breathing pipeline of head mould through the diverter valve, the diverter valve is connected with the controller, when the high-pressure air-blower starts, air inlet pipeline is because a large amount of air gets into will produce the power that is used for exhaling, air outlet pipeline is because a large amount of air discharge, will produce the power that is used for breathing in, consequently, air inlet pipeline or air outlet pipeline are connected when the diverter valve switches breathing pipeline, just can control breathing pipeline's air current direction, use an equipment just can realize breathing in and exhaling simultaneously, the operation of detecting the gauze mask resistance has been simplified from this. However, in the actual use process, the operation state of the high-pressure blower needs to be changed continuously, the high-pressure blower and the whole pipeline system are prone to faults, the stability of the device in operation is poor, and the accuracy of the breathing resistance may be affected.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a gauze mask detects machine.
The utility model discloses a mask detects machine, including head mould, controller and breathing resistance detection mechanism, breathing resistance detection mechanism includes diverter valve, air exhaust device, air-blowing device, first pressure sensor and second pressure sensor, diverter valve, air exhaust device, air-blowing device, first pressure sensor and second pressure sensor and controller electric connection, the first end and the head mould of diverter valve are connected, the second end and the air exhaust device of diverter valve are connected, the third end and the air-blowing device of diverter valve are connected, first pressure sensor sets up in the head mould, second pressure sensor sets up in the environment that the head mould was located.
According to the utility model discloses an embodiment still includes the detection case, the head die sets up in the detection case, second pressure sensor sets up in the detection case.
According to the utility model discloses an embodiment still includes filtration efficiency detection mechanism, filtration efficiency detection mechanism includes aerosol generator, first particle sensor and second particle sensor, aerosol generator, first particle sensor and second particle sensor and controller electric connection, aerosol generator's output and detection case intercommunication, first particle sensor sets up in the die head, second particle sensor sets up in the detection case.
According to the utility model discloses an embodiment, the second end of diverter valve sets up the governing valve of bleeding on the road with air exhaust device's communicating pipe, set up the governing valve of bleeding on the road with air exhaust device's communicating pipe of the third end of diverter valve, governing valve of bleeding and controller electric connection.
According to the utility model discloses an embodiment, the second end of diverter valve sets up the flowmeter respectively with the communicating pipe way of air exhaust device's communicating pipe way and the third end of diverter valve and the communicating pipe way of air-blowing device, flowmeter and controller electric connection.
According to an embodiment of the present invention, the air extracting device is a vacuum air extracting pump, and the air blowing device is an air compressor.
Compared with the prior art, the utility model discloses a mask detects machine has following advantage:
the utility model discloses a gauze mask detects machine, its respiratory resistance detection mechanism add with the air exhaust device of air-blowing device collaborative work, air exhaust device realizes breathing in, air-blowing device realizes exhaling to switch first mould intercommunication air exhaust device or air-blowing device through the diverter valve, compare with the equipment that uses single air-blower, need not constantly to change the device running state, improve the stability of pipe-line system operation effectively, make the complete machine operation more stable, and then make the degree of accuracy that respiratory resistance detected improve.
Additionally, the utility model discloses add the detection case, still integrated filtration efficiency detection mechanism can detect the resistance of breathing in and the filtration efficiency of gauze mask simultaneously, and save time has improved work efficiency greatly, the utility model discloses simple structure, a tractor serves several purposes have extensive popularization and application and worth.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a mask inspection machine according to an embodiment;
FIG. 2 is another schematic view of the mask inspection machine according to the embodiment;
FIG. 3 is a block diagram of the mask detecting machine in the embodiment;
description of reference numerals:
a machine table 1; a first pressure sensor conduit 11; a second pressure sensor conduit 12; a first particle sensor conduit 13; a second particle sensor conduit 14; a detection box 2; a case 21; a door 22; a head die 3; a controller 4; a respiratory resistance detection mechanism 5; a switching valve 51; a breathing circuit 511; an air extraction device 52; an air extraction line 521; an air blowing device 53; a blowing line 531; a first pressure sensor 54; a second pressure sensor 55; an air bleed adjustment valve 56; an air-blowing adjustment valve 57; a flow meter 58; a filtration efficiency detection mechanism 6; an aerosol generator 61; a particle conduit 611; a first particle sensor 62; a second particle sensor 63; a mask 7.
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-3, a mask detects machine, including board 1, detection case 2, head mould 3, controller 4, respiratory resistance detection mechanism 5 and filtration efficiency detection mechanism 6, detection case 2 sets up on board 1, head mould 3 sets up in detection case 2, controller 4 sets up on board 1 and with respiratory resistance detection mechanism 5 and filtration efficiency detection mechanism 6 electric connection, respiratory resistance detection mechanism 5 is used for detecting the respiratory resistance of gauze mask, filtration efficiency detection mechanism 6 is used for detecting the filtration efficiency of gauze mask.
Referring to fig. 1-2, a head die 3 is installed in a detection box 2 through a flange 31, and the detection box 2 is installed on a machine table 1. The detection box 2 includes a box body 21 and a box door 22, the box body 21 has a front opening, a connection plate 211 is provided at the bottom periphery of the box body 21, the connection plate 211 is connected with the machine table 1 by screws to mount the box body 21 on the machine table 1, and the box door 22 is hinged at the front side of the box body 21 to open/close the front opening of the box body 21. The whole organic glass that adopts of detection case 2 makes, and the staff of being convenient for observes the condition in the box 21.
Referring to fig. 1 to 3, the respiratory resistance detection mechanism 5 includes a switching valve 51, an air extractor 52, an air blower 53, a first pressure sensor 54 and a second pressure sensor 55, a first end of the switching valve 51 is connected to the head die 3 through a breathing pipe 511, a second end of the switching valve 51 is connected to an air inlet of the air extractor 52 through an air extracting pipe 521, and a third end of the switching valve 51 is connected to an air outlet of the air blower 53 through an air blowing pipe 531; the air suction device 52 and the air blowing device 53 are installed in the machine table 1, the first pressure sensor 54 is installed in the head die 3, and the second pressure sensor 55 is installed in the detection box 2.
Further, the air extracting device 52 is a vacuum air extracting pump, the air blowing device 53 is an air compressor, the air extracting device 52 simulates air suction, and the air blowing device 53 simulates air exhalation; the first pressure sensor 54 is for detecting the pressure inside the head die 3, and the second pressure sensor 55 is for detecting the pressure inside the detection tank 2; the switching valve 51, the air extractor 52, the air blower 53, the first pressure sensor 54 and the second pressure sensor 55 are electrically connected to the controller 4.
For the circuit of protection connection, the rear portion of board 1 is equipped with first pressure sensor spool 11 and second pressure sensor spool 12, the one end of first pressure sensor spool 11 stretches into in board 1, the one end of first pressure sensor spool 11 is passed detection case 2 and is connected with first mould 3, the one end of second pressure sensor spool 12 stretches into in board 1, the other end of second pressure sensor spool 12 stretches into in detection case 2, the circuit setting that first pressure sensor 54 is connected with controller 4 is at first pressure sensor spool 11, the circuit setting that second pressure sensor 55 and controller 4 are connected is at second pressure sensor spool 12.
In addition, an air suction adjusting valve 56 for adjusting the ventilation amount of the air suction pipe 521 is provided on the air suction pipe 521, an air blowing adjusting valve 57 for adjusting the ventilation amount of the air blowing pipe 531 is provided on the air blowing pipe 531, flow meters 58 for monitoring the pipe ventilation amount are provided on the air suction pipe 521 and the air blowing pipe 531, respectively, and the air suction adjusting valve 56, the air blowing adjusting valve 57, and the flow meters 58 are all electrically connected to the controller 4.
The detection process of the breathing resistance of the mask is as follows:
the mask 7 to be detected is worn on the head model 3, and the wearing position of the mask 7 and the tightness of the head band are adjusted to ensure the close fit of the mask 7 and the head model 3;
when the inspiration resistance is detected, the controller 4 drives the switching valve 51 to switch to enable the breathing pipeline 511 to be communicated with the air suction pipeline 521, drives the air suction device 52 to be opened to carry out 'inspiration', according to the monitoring value of the flow meter 58 on the air suction pipeline 521, the controller 4 drives the air suction regulating valve 56 to adjust to enable the ventilation volume of the air suction pipeline 521 to reach the detection standard, and the controller 4 receives the detection values of the first pressure sensor 54 and the second pressure sensor 55 and then obtains the inspiration resistance through system operation;
similarly, when the exhalation resistance is detected, the controller 4 drives the switching valve 51 to switch to enable the breathing pipeline 511 to be communicated with the air blowing pipeline 531, and drives the air blowing device 53 to be opened to perform "exhalation", according to the monitoring value of the flow meter 58 on the air blowing pipeline 531, the controller 4 drives the air blowing regulating valve 57 to adjust to enable the ventilation volume of the air blowing pipeline 531 to reach the detection standard, and after the controller 4 receives the detection values of the first pressure sensor 54 and the second pressure sensor 55, the exhalation resistance can be obtained through system operation.
This local breathing resistance detection mechanism adds the air exhaust device with air-blowing device collaborative work, is realized breathing in by air exhaust device, air-blowing device realizes exhaling to switch over head mould intercommunication air exhaust device or air-blowing device through the diverter valve, compare with the equipment that uses single air-blower, need not constantly to change device running state, improve the stability of pipe-line system operation effectively, make the complete machine operation more stable, and then make the degree of accuracy that the breathing resistance detected improve.
The controller of the machine automatically drives the switching valve to switch the communication of the pipelines, and automatically drives the regulating valve to regulate the ventilation volume of the pipelines according to the signal of the flowmeter, so that automatic detection is realized, the operation of detecting the breathing resistance of the mask is simplified, and the detection efficiency is improved.
Referring to fig. 1 to 3, the filtering efficiency detection mechanism 6 includes an aerosol generator 61, a first particle sensor 62, and a second particle sensor 63, and an output end of the aerosol generator 61 is communicated with the detection box 2 through a particle pipe 611; the aerosol generator 61 is installed on the side of the machine 1, the first particle sensor 62 is disposed in the head die 3, and the second particle sensor 63 is disposed in the detection box 2.
Further, the first particle sensor 62 is used for detecting the amount of particles in the head model 3, the second particle sensor 63 is used for detecting the amount of particles in the detection box 2, and preferably, the second particle sensor 63 is arranged close to the position where the mask is worn on the head model 3; the aerosol generator 61, the first particle sensor 62 and the second particle sensor 63 are electrically connected to the controller 4.
For the circuit of protection connection, the rear portion of board 1 is equipped with first particle sensor spool 13 and second particle sensor spool 14, the one end of first particle sensor spool 13 stretches into in board 1, the other end of first particle sensor spool 13 passes detection case 2 and is connected with head mould 3, the one end of second particle sensor spool 14 stretches into in board 1 and extends to the front side of head mould 3, the other end of second particle sensor spool 14 stretches into in detection case 2, the circuit setting that first particle sensor 62 and controller 4 are connected is at first particle sensor spool 13, the circuit setting that second particle sensor 63 and controller 4 are connected is at second particle sensor spool 14.
The detection process of the mask filtering efficiency is as follows:
when the air suction resistance is detected, the controller 4 simultaneously drives the aerosol generator 61 to be started, the aerosol generator 61 conveys aerosol particles into the detection box 2 through the particle pipeline 611, and when the air suction device 52 performs air suction, the controller 4 receives detection values of the first particle sensor 62 and the second particle sensor 63 and then obtains the filtering efficiency through system operation;
when the exhalation resistance is detected, the controller 4 drives the aerosol generator 61 to be turned off, and the aerosol generator 61 stops supplying aerosol particles into the detection chamber 2.
The aerosol particles output by the aerosol generator 61 need to undergo two processes before reaching the detection box 2: the first treatment is mixing with heated gas, and the second treatment is neutralizing the static electricity carried by aerosol particles through an electrostatic neutralizer, so as to reduce the influence of particle loss and static electricity on the test result.
The integrated filter efficiency detection mechanism can detect the air suction resistance of the mask and the filter efficiency at the same time, saves time and greatly improves the working efficiency; and detect filtration efficiency's in-process, the detection case is connected through the gauze mask with the outside only, so can make filtration efficiency's detected value more accurate.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a mask detects machine, its characterized in that, includes head die, controller and respiratory resistance detection mechanism, respiratory resistance detection mechanism includes diverter valve, air exhaust device, air-blowing device, first pressure sensor and second pressure sensor, diverter valve, air exhaust device, air-blowing device, first pressure sensor and second pressure sensor and controller electric connection, the first end and the head die of diverter valve are connected, the second end and the air exhaust device of diverter valve are connected, the third end and the air-blowing device of diverter valve are connected, first pressure sensor sets up in the head die, second pressure sensor sets up in the environment that the head die was located.
2. The mask detection machine according to claim 1, further comprising a detection box, wherein the head mold is disposed in the detection box, and the second pressure sensor is disposed in the detection box.
3. The mask detecting machine according to claim 2, further comprising a filtering efficiency detecting mechanism, wherein the filtering efficiency detecting mechanism comprises an aerosol generator, a first particle sensor and a second particle sensor, the aerosol generator, the first particle sensor and the second particle sensor are electrically connected to the controller, an output end of the aerosol generator is communicated with the detecting box, the first particle sensor is disposed in the head mold, and the second particle sensor is disposed in the detecting box.
4. The mask detecting machine according to any one of claims 1 to 3, wherein a suction adjusting valve is disposed on a communication line between the second end of the switching valve and the suction device, an air blowing adjusting valve is disposed on a communication line between the third end of the switching valve and the air blowing device, and the suction adjusting valve and the air blowing adjusting valve are electrically connected to the controller.
5. The mask detecting machine according to claim 4, wherein a communication line between the second end of the switching valve and the air extractor and a communication line between the third end of the switching valve and the air blower are respectively provided with a flow meter, and the flow meters are electrically connected to the controller.
6. The mask testing machine according to claim 5, wherein said air-extracting means is a vacuum air-extracting pump and said air-blowing means is an air compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425106.3U CN212904413U (en) | 2020-07-17 | 2020-07-17 | Gauze mask detects machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021425106.3U CN212904413U (en) | 2020-07-17 | 2020-07-17 | Gauze mask detects machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212904413U true CN212904413U (en) | 2021-04-06 |
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ID=75289376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021425106.3U Expired - Fee Related CN212904413U (en) | 2020-07-17 | 2020-07-17 | Gauze mask detects machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212904413U (en) |
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2020
- 2020-07-17 CN CN202021425106.3U patent/CN212904413U/en not_active Expired - Fee Related
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