CN216449524U

CN216449524U - Protection articles for use dead space testing arrangement

Info

Publication number: CN216449524U
Application number: CN202122871972.6U
Authority: CN
Inventors: 陆冰; 苏鹤群; 万恒
Original assignee: Jiangsu Guojian Testing Technology Co ltd
Current assignee: Jiangsu Guojian Testing Technology Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-06
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a protective article dead space testing device, and aims to provide a protective article dead space testing device capable of effectively ensuring the detection accuracy.

Description

Protection articles for use dead space testing arrangement

Technical Field

The utility model relates to the field of protection detection equipment, in particular to a protection article dead space testing device.

Background

The mask dead space tester measures the dead space content by measuring the content of inhaled carbon dioxide. It is used to evaluate the safety of the use of the respiratory system and to determine the performance of the personal protective equipment, and is equipped with a double respirator, a CO2 analyzer and software for the calculation of the results.

At present, Chinese patent with publication number CN214041061U discloses a novel respirator dead space testing device, which comprises a test board, a carbon dioxide gas storage tank and a host machine, wherein the test board is provided with a bionic head die, and the carbon dioxide gas storage tank is positioned at the adjacent side of the test board; the test board is provided with a first breathing machine and a second breathing machine, a carbon dioxide pressure regulating valve, a first pressure regulating meter, an inlet pressure regulating valve, a flow meter and an electromagnetic valve are arranged between the first breathing machine and a carbon dioxide gas storage tank, and the first breathing machine is provided with a first one-way valve.

Although this kind of neotype respirator dead space testing arrangement is suitable for carbon dioxide air-vent valve, first pressure regulating table, import air-vent valve, flowmeter and solenoid valve to control and detection standard, overall structure is simple, and first breathing machine and second breathing machine waveform, frequency control are convenient moreover, and carbon dioxide analysis precision is high, nevertheless often still has remaining of carbon dioxide at the in-process of admitting air to lead to the unqualified condition of detection data to appear.

Disclosure of Invention

The utility model aims to provide a protective article dead space testing device which has the advantages that the air permeability of a mask can be effectively and accurately measured, and the problem of inaccurate measurement caused by residual carbon dioxide after suck-back is reduced for correction.

The technical purpose of the utility model is realized by the following technical scheme:

the utility model provides a protective articles dead space testing arrangement, includes respiratory device, the last carbon dioxide air inlet that still is equipped with of respiratory device, the last gas outlet that still is equipped with of respiratory device, respiratory device one side still is equipped with the air inlet, still be equipped with filter equipment on the air inlet, filter equipment is equipped with the blow vent including the rose box that is located to be equipped with on the air inlet, be located the blow vent that the rose box both ends are equipped with, be located the notch that is equipped with on the blow vent, be located the seal cover that is equipped with on the blow vent and be located and be equipped with the adapter sleeve with seal cover threaded connection on the air inlet.

Through adopting above-mentioned technical scheme, the filter equipment who is equipped with can be effectual filters whole carbon dioxide in the gas of inhaling into, thereby entering into respiratory device through the pipeline, thereby simulate human breathing, owing to exhale out be the gas that has carbon dioxide, carry out effectual analysis in the gas of inhaling back through the dead space, thereby whether qualified to detect the gauze mask, and the gas of inhaling back carries out effectual filtration back and then enters into respiratory device, thereby the cooperation carbon dioxide air inlet gets into the gas of the human exhalation of simulation of a certain amount of carbon dioxide, and in case the filtration inefficacy will have too much carbon dioxide entering, thereby lead to final testing result unqualified or take place great deviation.

Further setting: the filter box comprises a filter frame, an active carbon block arranged in the filter frame, and a filter cover arranged at the top end of the filter frame and connected with the filter frame through threads, wherein the filter cover is connected with the vent.

By adopting the technical scheme, the filter box can effectively replace the inside activated carbon blocks, thereby reducing the replacement cost.

Further setting: and a carbon dioxide detector is also arranged on the vent.

Through adopting above-mentioned technical scheme, can effectual detection enter into respiratory device in the gas contain carbon dioxide to judge whether effective, whether need change filter equipment.

Further setting: breathing device including breathe the case, be located the sealed lid that the case top was equipped with of breathing, be located the compression cylinder that is equipped with on the sealed lid, be located the compression cylinder export and be equipped with the telescopic link that runs through to breathing the incasement and be located the extrusion piece that is equipped with on the telescopic link.

Through adopting above-mentioned technical scheme, the breathing device that is equipped with can the effectual effect of simulation real people lung to reach and inhale oxygen exhalation carbon dioxide, the effect of compressed air cylinder can effectually drive gaseous inspiration simultaneously, thereby uses repeatedly.

Further setting: still be equipped with spare equipment on the respiratory device, spare equipment is including the blast pipe that is equipped with on being located the blow vent, the pure oxygen air inlet that is equipped with on being located respiratory device and the pure oxygen bottle that is located respiratory device one side and is equipped with.

Through adopting above-mentioned technical scheme, the spare equipment that is equipped with can be effectual can not carry out filterable in-process and reach required detection demand through adding the pure oxygen.

Further setting: and the pure oxygen inlet is also provided with a first flow control valve.

By adopting the technical scheme, the pure oxygen intake can be effectively controlled, so that the gas content ratio in the whole breathing device is ensured to be close to the gas content ratio of real human body breathing.

Further setting: and a second flow control valve is also arranged on the carbon dioxide gas inlet.

By adopting the technical scheme, the second flow control valve can effectively control the air inflow of the carbon dioxide.

In conclusion, the utility model has the following beneficial effects: can the inside gas content ratio of respiratory device be adjusted in effectual control, simultaneously can short-term test under the normal measuring condition, conveniently change filter equipment, the effective carbon dioxide content in the pipeline that can detect simultaneously to improve and detect the rate of accuracy.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the overall structure of a device for testing the dead space of a protective article;

FIG. 2 is a schematic diagram of a device for testing dead space of a protective article, which is used for displaying an internal structure.

In the figure, 1, a breathing apparatus; 11. a breathing box; 12. a sealing cover; 13. a compression cylinder; 14. a telescopic rod; 15. extruding the block; 2. a carbon dioxide gas inlet; 3. an air outlet; 4. an air inlet; 5. a filtration device; 51. a filter cartridge; 511. a filter frame; 512. an activated carbon block; 513. a filter cover; 52. a vent; 53. a notch; 54. sealing sleeves; 55. connecting sleeves; 6. a carbon dioxide detector; 7. a standby device; 71. an exhaust pipe; 72. a pure oxygen inlet; 73. a pure oxygen cylinder; 8. a first flow control valve; 9. a second flow control valve.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings.

The technical scheme adopted by the utility model is as follows: a protection article dead space testing device, as shown in fig. 1 and fig. 2, comprises a breathing device 1, the breathing device 1 comprises a breathing box 11, a sealing cover 12 is arranged above the breathing box 11, a compression cylinder 13 is further arranged on the sealing cover 12, an outlet of the compression cylinder 13 is provided with a telescopic rod 14 penetrating into the breathing box 11, meanwhile, an extrusion block 15 is arranged on the telescopic rod 14 so as to be used for simulating the lung respiration of a human body, a carbon dioxide inlet 2 is further arranged on the breathing device 1, a second flow control valve 9 is further arranged on the carbon dioxide inlet 2, an air outlet 3 is further arranged on the breathing device 1, an air inlet 4 is further arranged on one side of the breathing device 1, a filtering device 5 is further arranged on the air inlet 4, the filtering device 5 comprises a filtering box 51 arranged on the air inlet 4, vent holes 52 are arranged at two ends of the filtering box 51, and notches 53 are arranged on the vent holes 52, meanwhile, a sealing sleeve 54 is arranged on the air vent 52, and a connecting sleeve 55 in threaded connection with the sealing sleeve 54 is arranged on the air inlet 4, so that the condition of gas leakage or insufficient pressure can be effectively ensured.

The filter box 51 comprises a filter frame 511, a plurality of activated carbon blocks 512 are arranged in the filter frame 511, a filter cover 513 in threaded connection with the filter frame 511 is arranged at the top end of the filter frame 511, the filter cover 513 is fixedly connected with the vent 52, so that no substance flows out from the filter box 51, the vent 52 is also provided with a carbon dioxide detector 6, the breathing device 1 is also provided with a standby device 7, the standby device 7 comprises an exhaust pipe 71 arranged on the vent 52, a pure oxygen inlet 72 arranged on the breathing device 1, a pure oxygen bottle 73 arranged on one side of the breathing device 1, and the pure oxygen inlet 72 is also provided with a first flow control valve 8.

The main working principle is as follows: in the normal use process, the mixed gas of oxygen and carbon dioxide in the breathing device 1 reaches the module for dead space test through the gas outlet 3, the tested gas can return to the breathing device 1 through the filtering device 5, in the whole process, because the breathing device 1 moves up and down through the compression cylinder 13, the gas in the gas inlet 4 is equivalently pumped into the breathing box 11 from the module for dead space test, the filtering device 5 arranged on the gas inlet 4 can filter the carbon dioxide, so that the carbon dioxide enters the breathing box 11 again, once the active carbon block 512 in the filtering device 5 is used for a long time and has no adsorption capacity, the carbon dioxide is contained in the gas inlet 4, so that the active carbon block 512 in the filtering device 5 can be detected under the action of a carbon dioxide tester, at the moment, the active carbon in the filtering device 5 can be replaced, the replacing modes are two, one is that the active carbon block 512 in the filtering frame 511 can be taken out by opening the filtering cover 513 after the active carbon is invalid, the other way is to take the whole filtering device 5 down and remove the air vents 52 and the sealing sleeve 54 on both sides, so that the whole filtering device 5 is replaced, the detection precision can be effectively ensured, and the standby device 7 directly removes the sucked gas under the condition that the whole filtering device 5 cannot be used, so that a proper amount of gas is introduced into the pure oxygen bottle 73 and the corresponding carbon dioxide gas inlet 2, and the simulation is continued.

The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a protective articles dead space testing arrangement, includes respiratory device (1), still be equipped with carbon dioxide air inlet (2) on respiratory device (1), its characterized in that: still be equipped with gas outlet (3) on respiratory device (1), respiratory device (1) one side still is equipped with air inlet (4), still be equipped with filter equipment (5) on air inlet (4), filter equipment (5) are including being located filter cartridge (51) that is equipped with on air inlet (4), being located blow vent (52) that filter cartridge (51) both ends were equipped with, being located notch (53) that are equipped with on blow vent (52), being located seal cover (54) that are equipped with on blow vent (52) and being located air inlet (4) and be equipped with adapter sleeve (55) with seal cover (54) threaded connection.

2. The protective article dead space testing device of claim 1, wherein: the filter box (51) comprises a filter frame (511), an activated carbon block (512) arranged in the filter frame (511), and a filter cover (513) which is arranged at the top end of the filter frame (511) and is in threaded connection with the filter frame (511), wherein the filter cover (513) is connected with the air vent (52).

3. The protective article dead space testing device of claim 2, wherein: and a carbon dioxide detector (6) is also arranged on the air vent (52).

4. The protective article dead space testing device of claim 3, wherein: breathing device (1) including breathe case (11), be located sealed lid (12) that breathe case (11) top was equipped with, be located compression cylinder (13) that are equipped with on sealed lid (12), be located compression cylinder (13) export and be equipped with and run through to breathing in case (11) telescopic link (14) and be located extrusion piece (15) that are equipped with on telescopic link (14).

5. The protective article dead space testing device of claim 4, wherein: still be equipped with spare equipment (7) on respiratory device (1), spare equipment (7) are including being located blast pipe (71) that are equipped with on blow vent (52), being located pure oxygen air inlet (72) that are equipped with on respiratory device (1) and being located pure oxygen bottle (73) that respiratory device (1) one side was equipped with.

6. The protective article dead space testing device of claim 5, wherein: and a first flow control valve (8) is also arranged on the pure oxygen inlet (72).

7. The protective article dead space testing device of claim 6, wherein: and a second flow control valve (9) is also arranged on the carbon dioxide gas inlet (2).