CN216013084U - Mask Bacterial Filtration Efficiency Detector Calibration Device - Google Patents
Mask Bacterial Filtration Efficiency Detector Calibration Device Download PDFInfo
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- CN216013084U CN216013084U CN202122505995.5U CN202122505995U CN216013084U CN 216013084 U CN216013084 U CN 216013084U CN 202122505995 U CN202122505995 U CN 202122505995U CN 216013084 U CN216013084 U CN 216013084U
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- electromagnetic valve
- pipeline
- calibration
- filtration efficiency
- calibration unit
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- 238000001914 filtration Methods 0.000 title claims abstract description 43
- 230000001580 bacterial effect Effects 0.000 title claims description 22
- 230000001681 protective effect Effects 0.000 claims abstract description 33
- 241000894006 Bacteria Species 0.000 claims abstract description 22
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000001954 sterilising effect Effects 0.000 claims abstract description 5
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 241000233866 Fungi Species 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 15
- 239000007921 spray Substances 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a mask bacteria filtration efficiency detector calibration device, which comprises a calibration main body and a protection body; the calibration main body comprises a shell, a gas flow calibration unit, a peristaltic pump flow calibration unit and a pressure calibration unit; the protective body comprises a transparent protective sleeve, an air inlet valve and an air outlet valve which are arranged on the transparent protective sleeve, an operation hole which is arranged on the protective sleeve, protective gloves which are connected on the operation hole and an ultraviolet sterilization lamp which is arranged in the protective sleeve. The utility model discloses gauze mask bacterium filtration efficiency detector calibrating device, it can realize calibrating the measurement performance and the relevant parameter of gauze mask bacterium filtration efficiency detector, and it can realize calibrating the measurement performance and the relevant parameter of microorganism sample thief, and it still can realize carrying out harmless calibration in having the fungus space. The utility model discloses well transparent protective sheath is collapsible for whole device volume is less, and the single person of being convenient for carries the detection place and carries out relevant detection operation.
Description
Technical Field
The utility model relates to a calibration equipment technical field, in particular to calibrating device of gauze mask bacterial filtration efficiency detector.
Background
Bacterial Filtration Efficiency (BFE) is one of the most important reference criteria for mask protection against bacterial viruses. At present, a mask Bacterial Filtration Efficiency (BFE) detector is commonly used for carrying out performance test on the mask bacterial filtration efficiency. The Bacteria Filtration Efficiency (BFE) detector for YY 0469-2011 < medical surgery gauze mask > < appendix B and ASTM F2101-07, etc. requires the following metering properties: the pipeline flow of an Anderson sampler in the detector is 28.3L/min; the flow rate of the vacuum pump is 57L/min; the flow rate of the peristaltic pump is 0.01 mL/min; air pump/pressure pump of at least 103 kPa; pressure gauge (accurate to 35kPa + -1 kPa); the timer accuracy is better than 0.1 s. In addition, according to the related technical description of mask Bacteria Filtration Efficiency (BFE) detectors provided by related manufacturers in China (Zhongrui in Qingdao, Guangzhou Dajieyu, Shanghai Pinkui, Shandong pioneer, Shanghai Panbiao and the like), the requirements of spray flow (8-12) L/min, adjustable range of peristaltic pump flow (0.006-3) mL/min, pressure (-20-0) kPa before a pipeline flow meter of an Anderson sampler, pressure (0-300) kPa before the pipeline flow meter of a spray flow meter, negative pressure (-90-120) Pa of an air fog chamber and negative pressure (-50-200) Pa of a cabinet are also provided. And the accuracy of the above-mentioned metering performance critically affects the sum of the final positive quality control average and the test sample count, i.e., ultimately affects the Bacterial Filtration Efficiency (BFE) value. Therefore, the accuracy of the metering performance of the mask Bacterial Filtration Efficiency (BFE) detector is related to whether the value of the Bacterial Filtration Efficiency (BFE) is accurate or not, whether the mask truly meets the requirements of filtering bacterial viruses or not and is related to the life health safety of people or not. However, at present, no complete set of calibration equipment can meet the requirements at home and abroad. Therefore, it is urgent to develop a calibration device for a mask Bacterial Filtration Efficiency (BFE) detector to calibrate the related metering performance of the mask Bacterial Filtration Efficiency (BFE) detector.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a gauze mask bacterial filtration efficiency detector calibrating device to the solution carries out the technical problem calibrated to the relevant measurement performance of gauze mask bacterial filtration efficiency detector.
The utility model discloses a calibration device for a mask bacteria filtration efficiency detector, which comprises a calibration main body and a protection body;
the calibration main body comprises a shell, a gas flow calibration unit, a peristaltic pump flow calibration unit and a pressure calibration unit;
the gas flow calibration unit comprises a flow meter positioned in the shell, a first pipeline connected with an inlet of the flow meter, a second pipeline connected with an outlet of the flow meter, a first electromagnetic valve connected with the first pipeline, a second electromagnetic valve and a third electromagnetic valve connected with the second pipeline, and the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are arranged outside the shell;
the peristaltic pump flow calibration unit comprises an electronic balance, a container arranged on the electronic balance, a third pipeline, a fourth electromagnetic valve connected to the inlet end of the third pipeline and a bracket for supporting the third pipeline and the fourth electromagnetic valve, wherein the outlet of the third pipeline is arranged in the container;
the pressure calibration unit comprises a pressure generator and a gas pressure gauge which are arranged in a shell, a fifth electromagnetic valve arranged at the inlet end of the pressure generator, a sixth electromagnetic valve arranged at the outlet end of the pressure generator, a fourth pipeline connected with the sixth electromagnetic valve and the gas pressure gauge, a fifth pipeline connected with the inlet of the fifth electromagnetic valve, a sixth pipeline with one end connected with the fourth pipeline and the other end connected with the fifth pipeline, and a seventh electromagnetic valve arranged on the sixth pipeline, and the pressure calibration unit also comprises an eighth electromagnetic valve, a ninth electromagnetic valve and a tenth electromagnetic valve which are respectively connected with the fifth pipeline, wherein the fifth electromagnetic valve, the sixth electromagnetic valve and the seventh electromagnetic valve are arranged in the shell, and the eighth electromagnetic valve, the ninth electromagnetic valve and the tenth electromagnetic valve are arranged outside the shell;
the protective body comprises a transparent protective sleeve, an air inlet valve and an air outlet valve which are arranged on the transparent protective sleeve, an operation hole which is arranged on the protective sleeve, protective gloves which are connected on the operation hole and an ultraviolet sterilization lamp which is arranged in the protective sleeve.
Furthermore, the transparent protective sleeve comprises a flexible transparent sleeve body and a folding support frame for supporting the flexible transparent sleeve body.
Further, the calibration unit also comprises a display screen for displaying the detection results of the flowmeter, the electronic scale and the gas pressure detector.
Further, gauze mask bacterial filtration efficiency detector calibrating device still include the reserve solenoid valve of being connected with first pipeline and the reserve solenoid valve of being connected with the second pipeline.
Further, the flowmeter is a roots flowmeter.
The utility model has the advantages that:
1. the utility model discloses gauze mask bacterium filtration efficiency detector calibrating device, it can realize calibrating the measurement performance and the relevant parameter of gauze mask bacterium filtration efficiency detector, and it can realize calibrating the measurement performance and the relevant parameter of microorganism sample thief, and it still can realize carrying out harmless calibration in having the fungus space.
2. The utility model discloses gauze mask bacterial filtration efficiency detector calibrating device, its transparent protective sheath is collapsible for whole device volume is less, and the single person of being convenient for carries to the detection place and carries out relevant detection operation.
Drawings
FIG. 1 is a schematic view of a calibration device for a mask bacteria filtration efficiency detector;
fig. 2 is a schematic structural view of the foldable support frame.
Detailed Description
The invention is further described with reference to the following figures and examples.
This embodiment gauze mask bacterial filtration efficiency detector calibrating device is including calibration main part and protective body.
The calibration main body comprises a shell 1, a gas flow calibration unit, a peristaltic pump flow calibration unit and a pressure calibration unit.
The gas flow calibration unit comprises a flow meter 2 positioned in the shell, a first pipeline 3 connected with an inlet of the flow meter, a second pipeline 4 connected with an outlet of the flow meter, a first electromagnetic valve 5 connected with the first pipeline, and a second electromagnetic valve 6 and a third electromagnetic valve 7 connected with the second pipeline, wherein the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are arranged outside the shell. In the embodiment, a roots flowmeter is adopted.
The peristaltic pump flow calibration unit comprises an electronic balance 8, a container 9 arranged on the electronic balance, a third pipeline 10, a fourth electromagnetic valve 11 connected to the inlet end of the third pipeline, and a support 12 supporting the third pipeline and the fourth electromagnetic valve, wherein the outlet of the third pipeline is arranged in the container. In a specific implementation, the stand and electronic balance are suggested to be placed on top of the housing 1 to facilitate calibration.
The pressure calibration unit includes a pressure generator 13 and a gas pressure gauge 14 disposed in the housing, a fifth solenoid valve 15 disposed at an inlet end of the pressure generator, a sixth solenoid valve 16 disposed at an outlet end of the pressure generator, a fourth pipe 17 connecting the sixth solenoid valve and the gas pressure gauge, a fifth pipe 18 connected to an inlet of the fifth solenoid valve, a sixth pipe 19 having one end connected to the fourth pipe and the other end connected to the fifth pipe, and a seventh solenoid valve 20 disposed on the sixth pipe, and also includes an eighth solenoid valve 21, a ninth solenoid valve 22, and a tenth solenoid valve 23 respectively connected to the fifth pipe, the fifth solenoid valve, the sixth solenoid valve, and the seventh solenoid valve being disposed in the housing, and the eighth solenoid valve, the ninth solenoid valve, and the tenth solenoid valve being disposed outside the housing.
The protective body comprises a transparent protective sleeve 24, an air inlet valve 25 and an air outlet valve 26 which are arranged on the transparent protective sleeve, an operation hole 27 which is arranged on the protective sleeve, protective gloves 28 which are connected on the operation hole and an ultraviolet sterilization lamp 29 which is arranged in the protective sleeve. In specific implementation, the number and positions of the air inlet valve, the air outlet valve and the operation holes can be adjusted according to needs.
The specific work flow of the calibration device for the mask bacteria filtration efficiency detector in the embodiment is as follows:
1) when the Anderson sampling pipeline of the mask bacteria filtration efficiency detector works, the air inlet of the Anderson sampling pipeline A, B channel is respectively connected with the second electromagnetic valve 6 and the third electromagnetic valve 7, the first electromagnetic valve 5 is opened, and the Roots flowmeter is opened to start calibration. The gas flow direction at this time is sterile ambient air → the first solenoid valve 5 → the roots flowmeter 2 → the second solenoid valve 6 and the third solenoid valve 7 → the anderson line A, B passage.
2) When the spraying pipeline of gauze mask bacterial filtration efficiency detector worked, connected the gas outlet and the first solenoid valve 5 of spraying pipeline, opened second solenoid valve 6 and third solenoid valve 7, opened roots's flowmeter 2 and can begin the calibration. At this time, the gas flow direction is air in the spray line → the first solenoid valve 5 → the roots flowmeter 2 → the second solenoid valve 6 and the third solenoid valve 7 → ambient air.
3) When the peristaltic pump pipeline of the mask bacteria filtration efficiency detector works, the liquid outlet of the peristaltic pump pipeline is connected with the fourth electromagnetic valve 11, the electronic balance 8 is opened, and calibration can be started. The liquid flow direction at this time is the liquid in the peristaltic pump line → the fourth solenoid valve 11 → the third tube 10 → the container 9.
4) When negative pressure of the mask bacterial filtration efficiency detector cabinet body needs to be calibrated, the eighth electromagnetic valve 21 and the seventh electromagnetic valve 20 are opened, the gas pressure gauge 14 is opened, and calibration can be started.
5) When the negative pressure of the mask bacteria filtration efficiency detector aerosol chamber needs to be calibrated, the ninth electromagnetic valve 22 and the seventh electromagnetic valve 20 are opened, the gas pressure gauge 14 is opened, and then calibration can be started.
6) When the pressure in front of the A-way flowmeter of the mask bacteria filtration efficiency detector needs to be calibrated, the eighth electromagnetic valve 21, the fifth electromagnetic valve 15 and the sixth electromagnetic valve 16 are opened, the gas pressure measuring instrument 14 and the pressure generator 13 are started, and then the calibration can be started.
7) When the front pressure of the B-way flowmeter of the mask bacterial filtration efficiency detector needs to be calibrated, the ninth electromagnetic valve 22, the fifth electromagnetic valve 15 and the sixth electromagnetic valve 16 are opened, the gas pressure measuring instrument 14 and the pressure generator 13 are opened, and then the calibration can be started.
8) When the front pressure of the mask bacteria filtration efficiency detector spray flowmeter needs to be calibrated, the tenth electromagnetic valve 23, the fifth electromagnetic valve 15 and the sixth electromagnetic valve 16 are opened, the gas pressure measuring instrument 14 and the pressure generator 13 are opened, and then calibration can be started.
In the embodiment, the calibration device for the mask bacteria filtration efficiency detector is provided with the transparent protective sleeve, the ultraviolet ozone lamp 29 is required to be used for sterilization before, during and after the calibration device for the mask bacteria filtration efficiency detector is used, the air inlet valve 25 and the air outlet valve 26 are one-way ventilation valves, ambient air is sucked in from the air inlet valve, and sterilized sterile air is discharged from the air outlet valve; the safety of the calibration can be ensured by these protective measures.
As an improvement to the above embodiment, the transparent protective sleeve includes a flexible transparent sleeve body and a foldable support frame for supporting the flexible transparent sleeve body, the foldable support frame can adopt a structure as shown in fig. 2, and includes an upper rectangular frame 30 and a lower rectangular frame 30 formed by two hinged joints, and an X-shaped cross rod 31 hinged on the upper rectangular frame and the lower rectangular frame, in a specific implementation, the hinged joints can adopt bolts so as to disassemble and assemble the folded and unfolded foldable support frame. Transparent protective sheath is collapsible in this improvement for whole device volume is less, and the single person of being convenient for carries the detection place and carries out relevant detection operation.
As an improvement to the above embodiment, the calibration unit further includes a display screen 32 for displaying the detection results of the flow meter, the electronic level and the gas pressure detector, and the detection results are displayed on the display screen in a unified manner, so that the efficiency of the calibration work can be improved.
As an improvement to the above embodiment, the calibration device for a mask bacteria filtration efficiency detector further includes a backup solenoid valve 33 connected to the first pipe and a backup solenoid valve 34 connected to the second pipe, and the capability of the calibration device to cope with a failure can be improved by providing the backup solenoid valves.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (5)
1. Gauze mask bacterial filtration efficiency detector calibrating device, its characterized in that: comprises a calibration main body and a protection body;
the calibration main body comprises a shell, a gas flow calibration unit, a peristaltic pump flow calibration unit and a pressure calibration unit;
the gas flow calibration unit comprises a flow meter positioned in the shell, a first pipeline connected with an inlet of the flow meter, a second pipeline connected with an outlet of the flow meter, a first electromagnetic valve connected with the first pipeline, a second electromagnetic valve and a third electromagnetic valve connected with the second pipeline, and the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are arranged outside the shell;
the peristaltic pump flow calibration unit comprises an electronic balance, a container arranged on the electronic balance, a third pipeline, a fourth electromagnetic valve connected to the inlet end of the third pipeline and a bracket for supporting the third pipeline and the fourth electromagnetic valve, wherein the outlet of the third pipeline is arranged in the container;
the pressure calibration unit comprises a pressure generator and a gas pressure gauge which are arranged in a shell, a fifth electromagnetic valve arranged at the inlet end of the pressure generator, a sixth electromagnetic valve arranged at the outlet end of the pressure generator, a fourth pipeline connected with the sixth electromagnetic valve and the gas pressure gauge, a fifth pipeline connected with the inlet of the fifth electromagnetic valve, a sixth pipeline with one end connected with the fourth pipeline and the other end connected with the fifth pipeline, and a seventh electromagnetic valve arranged on the sixth pipeline, and the pressure calibration unit also comprises an eighth electromagnetic valve, a ninth electromagnetic valve and a tenth electromagnetic valve which are respectively connected with the fifth pipeline, wherein the fifth electromagnetic valve, the sixth electromagnetic valve and the seventh electromagnetic valve are arranged in the shell, and the eighth electromagnetic valve, the ninth electromagnetic valve and the tenth electromagnetic valve are arranged outside the shell;
the protective body comprises a transparent protective sleeve, an air inlet valve and an air outlet valve which are arranged on the transparent protective sleeve, an operation hole which is arranged on the protective sleeve, protective gloves which are connected on the operation hole and an ultraviolet sterilization lamp which is arranged in the protective sleeve.
2. The mask bacteria filtration efficiency detector calibration apparatus of claim 1, wherein: the transparent protective sleeve comprises a flexible transparent sleeve body and a folding support frame for supporting the flexible transparent sleeve body.
3. The mask bacteria filtration efficiency detector calibration apparatus of claim 1, wherein: the calibration unit further comprises a display screen for displaying the detection results of the flowmeter, the electronic scale and the gas pressure detector.
4. The mask bacteria filtration efficiency detector calibration apparatus of claim 1, wherein: the system also comprises a standby electromagnetic valve connected with the first pipeline and a standby electromagnetic valve connected with the second pipeline.
5. The mask bacteria filtration efficiency detector calibration apparatus of claim 1, wherein: the flowmeter is a Roots flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122505995.5U CN216013084U (en) | 2021-10-18 | 2021-10-18 | Mask Bacterial Filtration Efficiency Detector Calibration Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122505995.5U CN216013084U (en) | 2021-10-18 | 2021-10-18 | Mask Bacterial Filtration Efficiency Detector Calibration Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216013084U true CN216013084U (en) | 2022-03-11 |
Family
ID=80522458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122505995.5U Active CN216013084U (en) | 2021-10-18 | 2021-10-18 | Mask Bacterial Filtration Efficiency Detector Calibration Device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216013084U (en) |
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2021
- 2021-10-18 CN CN202122505995.5U patent/CN216013084U/en active Active
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