CN211856309U - Gauze mask gas exchange pressure tester - Google Patents
Gauze mask gas exchange pressure tester Download PDFInfo
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- CN211856309U CN211856309U CN202020550466.XU CN202020550466U CN211856309U CN 211856309 U CN211856309 U CN 211856309U CN 202020550466 U CN202020550466 U CN 202020550466U CN 211856309 U CN211856309 U CN 211856309U
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Abstract
The utility model discloses a gaseous interchange pressure tester of gauze mask mainly relates to gauze mask capability test instrument field. Including the tester main part, tester main part surface one side is equipped with the control cabinet, it has the mounting groove to open in the tester main part and control cabinet one side, the mounting groove bottom is equipped with annular base, the cover has outer annular pressure cover on the annular base, outer annular pressure cover and annular base outside threaded connection, outer annular pressure is overlapped and is equipped with the connecting cylinder, the position that the connecting cylinder is located the mounting groove top is equipped with the handle, be equipped with the connecting pipe in the tester main part, connecting pipe one end and annular base's middle part intercommunication, the connecting pipe other end is connected with the aspiration pump, still be equipped with detection device in the tester main part. The beneficial effects of the utility model reside in that: the sample clamping device is simple in structure, convenient to operate, labor-saving, good in air tightness and capable of guaranteeing the accuracy of an experimental result.
Description
Technical Field
The utility model relates to a gauze mask capability test instrument field specifically is gauze mask gas exchange pressure tester.
Background
The medical mask is generally used for occasions with high environmental requirements, such as medical clinics, laboratories, operating rooms and the like, is worn by medical workers, has relatively high safety factor, and has relatively strong protection capability on bacteria and viruses. The medical protective mask is suitable for protecting medical staff and related workers against respiratory infectious diseases transmitted through air, and has high protection level; medical surgical masks are suitable for basic protection of medical or related personnel, as well as protection against the transmission of blood, body fluids and splashes during invasive procedures. Therefore, the gas exchange pressure difference of the medical mask is an important index for judging whether the mask is qualified or not and judging the protection grade.
In the prior art, the pressure difference of the mask is measured by adopting a gas flow method, and the gas exchange pressure difference is measured when constant-flow gas flows through a medical mask with a certain area, namely the damping of the mask to the airflow.
There has been relevant test instrument in the market at present, but current test instrument's sample clamping device is or too simple for the gas tightness of sample centre gripping department is not good, influences final experimental result, or has to get sample clamping device gas tightness even good, but clamping device's operation is comparatively complicated hard, can increase staff's intensity of labour undoubtedly to the test of big sample.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gauze mask gas exchange pressure tester, its sample clamping device's simple structure, convenient operation and laborsaving to the gas tightness is good, guarantees the accuracy of experimental result.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
gaseous exchange pressure tester of gauze mask, including the tester main part, tester main part surface one side is equipped with the control cabinet, it has the mounting groove to open in the tester main part and control cabinet one side, the mounting groove bottom is equipped with annular base, the cover has outer annular pressure cover on the annular base, outer annular pressure cover and annular base outside threaded connection, outer annular pressure is overlapped and is equipped with the connecting cylinder, the position that the connecting cylinder is located the mounting groove top is equipped with the handle, be equipped with the connecting pipe in the tester main part, connecting pipe one end and annular base's middle part intercommunication, the connecting pipe other end is connected with the aspiration pump, still be equipped with detection device in the tester main part.
Furthermore, an annular lug is arranged on the annular base, an inner annular pressing sleeve is sleeved on the annular lug, and the outer side of the inner annular pressing sleeve is rotatably connected with the outer annular pressing sleeve.
Furthermore, the detection device comprises a digital differential pressure meter and a flowmeter, the digital differential pressure meter is arranged at the position, close to the annular base, of the connecting pipe, and the flowmeter is arranged at the position, close to the air suction pump, of the connecting pipe.
Furthermore, the side wall of the tester main body is provided with a vent hole communicated with the air suction pump.
Contrast prior art, the beneficial effects of the utility model reside in that:
the tester main body is provided with a control console, the control console comprises a control key and a display, test parameters are set through the control console, experimental data are checked through the display, more convenient and visual test data are obtained, the tester main body is also provided with a mounting groove, a hole in the annular base at the bottom of the mounting groove is communicated with the connecting pipe, the joint is sealed, a sample is placed on the annular base, the outer annular pressing sleeve is sleeved on the annular base through a handle and a connecting cylinder, the outer annular pressing sleeve is driven to rotate by a rotary connecting cylinder, the outer annular pressing sleeve is in threaded connection on the annular base, the bottom surface of the outer annular pressing sleeve is close to the surface of the annular base, the sample is finally tightly pressed between the outer annular pressing sleeve and the annular base, the outer annular pressing sleeve surrounds the annular base, good air tightness around the sample is ensured, the air suction pump sucks the sample through the connecting pipe, the air passes the sample from outer annular pressure cover top and is taken away by the aspiration pump, then detection device measures the pressure differential of sample both sides and shows data through the control cabinet, this tester simple structure, can be convenient laborsaving carry out the centre gripping to the sample, and guarantee good gas tightness around the sample, guarantee test result's accuracy.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a side view of the structure of the present invention.
Fig. 4 is an enlarged view of a portion a of fig. 3 according to the present invention.
Reference numerals shown in the drawings:
1. a tester main body; 2. a console; 3. mounting grooves; 4. an annular base; 5. an outer annular pressure sleeve; 6. a connecting cylinder; 7. a handle; 8. a connecting pipe; 9. an air pump; 10. an annular projection; 11. an inner annular pressing sleeve; 12. a digital differential pressure gauge; 13. a flow meter; 14. a vent hole; 15. and a bearing.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
The utility model relates to a gauze mask gas exchange pressure tester, the major structure includes tester main part 1, tester main part 1 surface one side is equipped with control cabinet 2, is equipped with display and operation button on the control cabinet 2, sets up parameters such as experimental time, air current size through the operation button, shows parameter and test data that sets up through the display, open on the tester main part 1 and control cabinet 2 one side has mounting groove 3, the mounting groove 3 bottom is equipped with annular base 4, annular base 4 is gone up to overlap has outer annular pressure cover 5, and outer annular pressure cover 5 is the open-ended tubular structure in the middle of, and the sample centre gripping is between annular base 4 and outer annular pressure cover 5, and annular base 4 and the middle hole of outer annular pressure cover 5 communicate, thereby the air current of being convenient for passes through the sample and forms the gas exchange pressure difference, outer annular pressure cover 5 and the annular base 4 outside threaded connection, the outer ring-shaped pressing sleeve 5 is provided with a connecting cylinder 6, the position of the connecting cylinder 6 at the top of the mounting groove 3 is provided with a handle 7, the connecting cylinder 6 is rotated through the handle 7 to drive the outer ring-shaped pressing sleeve 5 to rotate, so that the outer ring-shaped pressing sleeve 5 in threaded connection with the ring-shaped base 4 moves downwards, finally, the sample is firmly pressed between the ring-shaped base 4 and the outer ring-shaped pressing sleeve 5, the whole clamping and pressing process is convenient and labor-saving, the outer ring-shaped pressing sleeve 5 of the cylindrical structure surrounds the ring-shaped base 4, the air tightness around the sample is ensured, the gas is ensured to circulate only in the middle of the sample, a sealing ring can be arranged at the bottom outside the ring-shaped base 4, the bottom of the outer ring-shaped pressing sleeve 5 is contacted with the sealing ring after pressing the sample, the air tightness is further ensured, the accuracy of the experimental result is ensured, and the junction is airtight, the other end of connecting pipe 8 is connected with aspiration pump 9, and aspiration pump 9 is connected with control cabinet 2, still be equipped with detection device in the tester main part 1, detection device is connected with control cabinet 2, sends detected data for control cabinet 2, and after the centre gripping has been good the sample and has set up the parameter, start aspiration pump 9 through control cabinet 2 and bleed, make the outer air pass the sample from the intermediate aperture of outer annular pressure sleeve 5 and annular base 4 and produce the air current to measure the gas exchange pressure difference of sample both sides, reachd test data.
Preferably, the annular base 4 is provided with an annular bump 10, the outer diameter of the annular bump 10 is smaller than that of the annular base 4, the annular bump 10 is sleeved with an inner annular pressure sleeve 11, the middle apertures of the inner annular pressure sleeve 11, the annular bump 10 and the annular base 4 are the same, the bottom of the outer side of the inner annular pressure sleeve 11 is provided with a shaft shoulder, the outer wall of the inner annular pressure sleeve 11 is in interference fit with the inner wall of the bearing 15, the inner wall of the outer annular pressure sleeve 5 is in interference fit with the outer wall of the bearing 15, and the inner top wall of the outer annular pressure sleeve 5 is in contact with the top of the bearing 15, so that the outer annular pressure sleeve 5 and the inner annular pressure sleeve 11 are rotatably connected through the bearing 15 and assembled into a whole, the sample is clamped between the inner annular pressure sleeve 11 and the annular bump 10, the outer ring of the inner annular pressure sleeve 11 and the outer wall of the annular bump 10 compress the edge of the sample, the air tightness is further, make outer annular pressure cover 5 rotate and can not drive the interior annular pressure cover 11 rotation in the middle of compressing tightly, prevent that the sample from rotating the in-process that compresses tightly and producing the fold, further guarantee the accuracy of test result.
Preferably, detection device includes digital differential pressure meter 12 and flowmeter 13, digital differential pressure meter 12 sets up the position that is close to annular base 4 at connecting pipe 8, and two measuring heads of digital differential pressure meter 12 set up respectively in the both sides of sample, and the setting mode belongs to prior art, and the description is not done here, flowmeter 13 sets up the position that is close to aspiration pump 9 at connecting pipe 8, and the measuring head of flowmeter 13 is located connecting pipe 8 for measure the air current velocity that aspiration pump 9 produced, thereby it obtains final test result to be convenient for each data of control cabinet 2 integration calculation.
Preferably, the side wall of the tester body 1 is provided with a vent 14 communicated with the air pump 9, so as to ensure the normal use of the air pump 9.
Place the sample of intercepting in advance on annular lug 10, the diameter of sample is greater than the diameter of annular lug 10, then through handle 7 and connecting cylinder 6 with outer annular pressure cover 5 cover at annular base 4 top, the top contact of interior annular pressure cover 11 and annular lug 10 this moment, it makes outer annular pressure cover 5 rotate and move down along annular base 4's height to rotate connecting cylinder 6, middle interior annular pressure cover 11 is taken down and is pushed down but can not rotate, until the interior annular pressure cover 11 inside wall compresses tightly the sample edge with the annular lug 10 outside, the sample is firmly held and the marginal centre gripping department has good gas tightness this moment, then just can open aspiration pump 9 and test after setting up the parameter through control cabinet 2, and show the test result on the display, moreover, the steam generator is simple in structure, and convenient operation, and is suitable for the test of big batch sample.
Claims (4)
1. Gauze mask gas exchange pressure tester, its characterized in that: comprises a tester main body (1), a console (2) is arranged on one side of the surface of the tester main body (1), an installation groove (3) is arranged on the tester main body (1) and one side of the control console (2), an annular base (4) is arranged at the bottom of the mounting groove (3), an outer annular pressing sleeve (5) is sleeved on the annular base (4), the outer annular pressing sleeve (5) is in threaded connection with the outer side of the annular base (4), a connecting cylinder (6) is arranged on the outer annular pressing sleeve (5), a handle (7) is arranged at the position of the connecting cylinder (6) at the top of the mounting groove (3), a connecting pipe (8) is arranged in the tester main body (1), one end of the connecting pipe (8) is communicated with the middle part of the annular base (4), the other end of the connecting pipe (8) is connected with an air pump (9), and a detection device is further arranged in the tester main body (1).
2. The mask gas exchange pressure tester according to claim 1, characterized in that: the novel pressure ring is characterized in that an annular convex block (10) is arranged on the annular base (4), an inner annular pressure sleeve (11) is sleeved on the annular convex block (10), and the outer side of the inner annular pressure sleeve (11) is rotatably connected with an outer annular pressure sleeve (5).
3. The mask gas exchange pressure tester according to claim 1, characterized in that: the detection device comprises a digital differential pressure meter (12) and a flowmeter (13), wherein the digital differential pressure meter (12) is arranged at the position, close to the annular base (4), of the connecting pipe (8), and the flowmeter (13) is arranged at the position, close to the air suction pump (9), of the connecting pipe (8).
4. The mask gas exchange pressure tester according to claim 1, characterized in that: the side wall of the tester main body (1) is provided with a vent hole (14) communicated with the air pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020550466.XU CN211856309U (en) | 2020-04-14 | 2020-04-14 | Gauze mask gas exchange pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020550466.XU CN211856309U (en) | 2020-04-14 | 2020-04-14 | Gauze mask gas exchange pressure tester |
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| Publication Number | Publication Date |
|---|---|
| CN211856309U true CN211856309U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020550466.XU Active CN211856309U (en) | 2020-04-14 | 2020-04-14 | Gauze mask gas exchange pressure tester |
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| CN (1) | CN211856309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279928A (en) * | 2021-12-20 | 2022-04-05 | 山东省医疗器械和药品包装检验研究院 | Medical gauze mask gas exchange pressure difference testing arrangement |
-
2020
- 2020-04-14 CN CN202020550466.XU patent/CN211856309U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279928A (en) * | 2021-12-20 | 2022-04-05 | 山东省医疗器械和药品包装检验研究院 | Medical gauze mask gas exchange pressure difference testing arrangement |
| CN114279928B (en) * | 2021-12-20 | 2023-11-28 | 山东省医疗器械和药品包装检验研究院 | Medical mask gas exchange pressure difference testing device |
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