CN214150359U - Mask blockage testing equipment - Google Patents

Abstract

The utility model relates to a mask test field, concretely relates to mask blockage test equipment, a test component, a dust input component, a dust output component and a breath simulation component are arranged in a machine body, the test component comprises a test box, a head die and a pressure sensor, the dust input component and the dust output component are respectively connected with two sides of the test box, a mask is worn on the head die in the test box, a breathing zone is formed between the mask and the head die, the breath simulation component comprises a breathing machine, a first connecting pipe, a second connecting pipe, a third connecting pipe and a temperature and humidity control system, the breathing machine is communicated with the breathing zone through the first connecting pipe, the breathing machine is connected with a temperature and humidity control system through the second connecting pipe, the temperature and humidity control system is communicated with the breathing zone through the third connecting pipe, a collecting pipe on the pressure sensor extends into the breathing zone after passing through the head die, a probe is arranged in the test box, and a dust determinator connected with the probe is arranged outside the test box, the dust output assembly comprises an exhaust fan and a flow meter. The utility model discloses can block the test to the face guard better.

Description

Mask blockage testing equipment

Technical Field

The utility model relates to a face guard performance test technical field, concretely relates to face guard blocks test equipment.

Background

A wide variety of face masks have been developed on the market today based on the practical need, wherein the filtering particulate resistant face mask provides an adequate seal against the ambient environment for the wearer's face, primarily to prevent solid and liquid aerosols, air entering the filtering particulate resistant face mask and passing directly to the nose and mouth regions of the face mask, and exhaled air flowing directly through the filtering material of the face mask to the ambient atmosphere.

Because wear filtration formula anti-particulate matter face guard and use the breathing resistance of a period back dust can part jam face guard and increase face guard under dust environment, just so influenced the performance of face guard product, face guard blocks test equipment and can be used for the simulation test filtration formula anti-particulate matter face guard the jam condition under dust environment, and face guard blocks test equipment on the current market often because structural design is unreasonable leads to blocking test effect and unsatisfactory, can't satisfy actual demand well. In view of the above-mentioned shortcomings, the present invention provides an improvement.

Disclosure of Invention

In order to overcome the not enough of background art, the utility model provides a face guard blocks test equipment, structural design is reasonable, can block the test to the face guard better to can satisfy actual demand better.

The utility model adopts the technical proposal that: a mask blockage testing device comprises a machine body, wherein a testing component, a dust input component, a dust output component, a breathing simulation component and a controller for control and data processing are arranged in the machine body, the testing component comprises a testing box, a head die and a pressure sensor for testing the breathing resistance of the mask, one side of the testing box is connected with the dust input component, the other side of the testing box is connected with the dust output component, the head die is arranged in the testing box, the mask is worn on the head die, a breathing zone is formed between the mask and the head die, the breathing simulation component comprises a breathing machine, a first connecting pipe, a second connecting pipe, a third connecting pipe and a temperature and humidity control system, an air suction port of the breathing machine is communicated to the breathing zone through the first connecting pipe, and an exhalation port of the breathing machine is connected to the temperature and humidity control system through the second connecting pipe, the temperature and humidity control system communicates to the breathing zone through the third connecting pipe, pressure sensor is connected with the acquisition pipe, the acquisition pipe passes through stretch into behind the head mould breathing zone, be equipped with the probe that is used for detecting the interior dust concentration of test box in the test box, the test box be equipped with outward with the dust apparatus that the probe links to each other, dust output assembly is including exhaust fan and the flowmeter that is used for detecting the exhaust flow.

In the technical scheme, the test box can form a relatively closed environment, the dust input assembly can convey air mixed with dust to the test box, the dust output assembly can accelerate the discharge of the air in the test box and control the discharge speed of the air by arranging the exhaust fan, the exhaust flow can be conveniently detected by arranging the flowmeter, so that the air mixed with the dust in the test box can have proper flow velocity according to the actual test requirement, a better test effect is facilitated, the head die fixed in the test box can be convenient to wear the mask, the mask can provide sufficient sealing for the face of the head die aiming at the surrounding environment, a breathing zone is formed between the mask and the head die, the air suction port of the breathing machine is communicated with the breathing zone through the first connecting pipe and can simulate the air suction process of a person, and the exhalation port of the breathing machine is connected to the temperature and humidity control system through the second connecting pipe, temperature and humidity control system passes through third connecting pipe intercommunication breathing zone, the air of exhalation directly gets into breathing zone behind the head mould, the temperature that can control the exhalation air through setting up temperature and humidity control system keeps about 37 degrees centigrade, humidity keeps about 95% RH, the air that enables the exhalation like this is more close the people exhalation, be favorable to promoting test effect, dust measurement appearance can conveniently detect the interior dust concentration of test box through the probe, be favorable to the adjustment and ensure the stability of dust concentration in the test box, the one end of gathering pipe stretches into the breathing zone and can be convenient for pressure sensor to gather and survey the respiratory resistance of face guard, from this can know that the face guard blocks test equipment structural design rationally, can block the test to the face guard better, thereby can satisfy actual demand better.

Preferably, the temperature and humidity control system comprises an external water tank, and the external water tank supplies water to the temperature and humidity control system through a water delivery pipe.

In order to better generate dust and input the dust into the test box, the dust input assembly comprises a dust box, a dust generator, a first filter, an air inlet pipe and a dust inlet pipe, the dust box is fixedly arranged at the bottom in the machine body, the dust generator is arranged on the dust box, the dust generator is communicated to the test box through the dust inlet pipe, one end of the air inlet pipe is an air inlet, the other end of the air inlet pipe is communicated to the dust inlet pipe, and the first filter is arranged on the air inlet pipe.

In order to discharge dust better, the dust output assembly further comprises an exhaust pipe and a second filter, one end of the exhaust pipe is an exhaust port, the other end of the exhaust pipe is communicated to the test box, the exhaust pipe is close to the second filter, the exhaust pipe is close to the one end of the test box, the flowmeter is arranged at one end of the exhaust port, and the exhaust pipe is further provided with the exhaust fan and the exhaust fan located between the second filter and the flowmeter.

Preferably, the middle part in the organism is equipped with the mounting panel, and the bottom is equipped with the bottom plate, the test box sets firmly the top of mounting panel, first filter and second filter all set firmly on the mounting panel, external water tank, temperature and humidity control system, breathing machine and dust box all set firmly on the bottom plate.

In order to facilitate the movement of the test device, a plurality of moving wheels are arranged at the bottom of the machine body.

Preferably, the dust in the dust box adopts dolomite powder.

To sum up, the utility model discloses beneficial effect does:

1. the air mixed with dust in the test box can have a proper flow rate according to actual test requirements by arranging the exhaust fan and the flowmeter, and a better test effect is favorably obtained;

2. the dust input assembly comprises a dust box, a dust generator, a first filter, an air inlet pipe and a dust inlet pipe, and can well input air mixed with dust into the test box;

3. the dust output assembly comprises an exhaust fan, an exhaust pipe, a second filter and a flowmeter, and not only can well exhaust air from the test box, but also can effectively detect exhaust flow.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the head mold of the present invention with a first air suction pipe, a second air suction pipe and a third connecting pipe;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

marked in the figure, 1-machine body, 2-test box, 3-head die, 4-pressure sensor, 5-mask, 6-breathing zone, 7-respirator, 8-temperature and humidity control system, 9-collection tube, 10-probe, 11-dust tester, 12-exhaust fan, 13-flowmeter, 14-first air suction tube, 15-second air suction tube, 16-second connecting tube, 17-third connecting tube, 18-external water tank, 19-water delivery tube, 20-dust box, 21-dust generator, 22-first filter, 23-air inlet tube, 24-dust inlet tube, 25-exhaust tube, 26-second filter, 27-mounting plate, 28-bottom plate, 29-moving wheel and 30-controller, 31-inspiration channel, 32-blocking ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention.

As shown in fig. 1 to 3, the mask blockage testing apparatus disclosed in this embodiment includes an apparatus body 1, a testing component, a dust input component, a dust output component, a breathing simulation component, and a controller 30 for controlling and processing data are disposed in the apparatus body 1, the testing component includes a testing box 2, a head mold 3, and a pressure sensor 4 for testing breathing resistance of a mask 5, one side of the testing box 2 is connected to the dust input component, and the other side is connected to the dust output component, the head mold 3 is disposed in the testing box 2, the mask 5 is worn on the head mold 3, a breathing zone 6 is formed between the mask 5 and the head mold 3, the breathing simulation component includes a breathing machine 7, a first connecting pipe, a second connecting pipe 16, a third connecting pipe 17, and a temperature and humidity control system 8, an air suction port of the breathing machine 7 is communicated to the breathing zone 6 through the first connecting pipe, the expiratory vent of breathing machine 7 passes through second connecting pipe 16 is connected to atmospheric control system 8, atmospheric control system 8 passes through third connecting pipe 17 intercommunication extremely breathe district 6, pressure sensor 4 is connected with and gathers pipe 9, it passes through to gather pipe 9 stretch into behind the head mould 3 breathe district 6, be equipped with the probe 10 that is used for detecting the interior dust concentration of test box 2 in the test box 2, test box 2 be equipped with outward with the dust apparatus 11 that probe 10 links to each other, dust output assembly is including exhaust fan 12 and the flowmeter 13 that is used for detecting the exhaust flow.

In the above technical scheme, the test box 2 can form a relatively closed environment, the dust input assembly can convey air mixed with dust to the test box 2, the dust output assembly can accelerate the discharge of the air in the test box 2 and control the discharge speed of the air by arranging the exhaust fan 12, the exhaust flow can be conveniently detected by arranging the flow meter 13, so that the air mixed with dust in the test box 2 can have a proper flow speed according to the actual test requirement, and a better test effect is facilitated, the head die 3 fixed in the test box 2 can be convenient to wear the face mask 5, the face mask 5 can provide sufficient sealing for the face of the head die 3 aiming at the surrounding environment, a breathing zone 6 is formed between the face mask 5 and the head die 3, the air suction port of the breathing machine 7 is communicated with the breathing zone 6 through a first connecting pipe to simulate the air suction process of a person, the exhalation port of the breathing machine 7 is connected to the temperature and humidity control system connecting pipe 8 through a second connecting pipe 16, temperature and humidity control system 8 passes through third connecting pipe 17 intercommunication breathing zone 6, the air of exhalation directly gets into breathing zone 6 behind through head mould 3, the temperature that can control the exhalation air through setting up temperature and humidity control system 8 keeps about 37 degrees centigrade, humidity keeps about 95% RH, the air that enables the exhalation like this more is close the air of people exhalation, be favorable to promoting test effect, dust measurement appearance 11 can conveniently detect the interior dust concentration of test box 2 through probe 10, be favorable to the adjustment and ensure the stability of dust concentration in test box 2, the one end of gathering pipe 9 stretches into breathing zone 6 and can be convenient for pressure sensor 4 to gather and survey the respiratory resistance of face guard 5, it is reasonable to know face guard blocking test equipment structural design from this, can better carry out the blocking test to face guard 5, thereby can satisfy actual demand better. The pressure sensor 4 in the embodiment adopts a seta 266 micro differential pressure transmitter, the dust determinator 11 adopts a TSI DUSTTRAK II dust determinator 11, the flow meter 13 adopts CAFS4000, and the breathing machine 7 adopts an MN-1A simulated respirator, which all belong to the prior art. During the concrete implementation, the dust concentration data transmission that dust apparatus 11 detected handles the back for controller 30, controller 30 can control dust generator 21 and change the emergence volume of dust, thereby ensure that the dust concentration in test box 2 remains stable, and then be favorable to promoting the test effect, flowmeter 13 can conveniently detect the exhaust flow and handle flow data transmission for controller 30, controller 30 can control exhaust fan 12 and change the wind-force size, thereby ensure that the air flow rate in test box 2 keeps relatively stable, and then be favorable to promoting the test effect. In this embodiment, the pressure sensor 4 measures the breathing resistance of the mask 5 by extending one end of the collection tube 9 into the breathing zone 6, and is evaluated primarily by the difference in pressure between the inside of the mask 5 and the atmosphere. The head model 3, the pressure sensor 4, the face mask 5, the breathing machine 7, the temperature and humidity control system 8, the collecting pipe 9, the probe 10, the dust measuring instrument 11, the exhaust fan 12, the flow meter 13 and the controller 30 all belong to the prior art, and are not specifically described herein.

During actual testing, the controller 30 will control the test to terminate prematurely if the detected mask breathing resistance exceeds the pre-set limits for the test, and the occlusion test can continue if the detected breathing resistance is within the normal range, typically for a test period of approximately two hours or more.

In the specific implementation of this embodiment, the first connection pipe includes a first inhalation pipe 14 and a second inhalation pipe 15, the second connection pipe 16 and the third connection pipe 17 are both exhalation pipes, the head mold 3 is provided with an installation channel, the first inhalation pipe 14 passes through the installation channel and is fixed on the head mold 3, one end of the first inhalation pipe 14 is communicated with the breathing zone 6, the diameter of the first inhalation pipe 14 is greater than that of the third connection pipe 17, the third connection pipe 17 passes through the middle of the first inhalation pipe 14 and is communicated with the breathing zone 6, an inhalation channel 31 is formed between the third connection pipe 17 and the first inhalation pipe 14, one end of the first inhalation pipe 14 away from the breathing zone 6 is provided with a blocking ring 32, the blocking ring 32 can support the third connection pipe 17 and also block the end of the first inhalation pipe 14, which is beneficial to forming the inhalation channel 31, the second inhalation pipe 15 is connected to the first inhalation pipe 14 and the second inhalation pipe 15 is communicated with the inhalation channel 31, the second air suction pipe 15, the third connecting pipe 17 and the collecting pipe 9 all penetrate through the test box 2, and the collecting pipe 9 penetrates through a mounting channel on the head die 3 and extends into the breathing zone 6 in the embodiment, so that the pressure sensor 4 can conveniently and accurately measure the breathing resistance of the mask 5. The air in the breathing zone 6 enters the second air suction pipe 15 after passing through the air suction channel 31 during air suction, and is introduced into the breathing machine 7 through the second air suction pipe 15, and the air passing through the temperature and humidity control system 8 during air expiration is directly introduced into the breathing zone 6 through the third connecting pipe 17, so that the natural breathing process of a human can be well simulated. The plugging ring 32, the first air suction pipe 14 and the third connecting pipe 17 can all refer to the prior art, and are not further described here.

As a preferred technical scheme, the temperature and humidity control system 8 comprises an external water tank 18, and the external water tank 18 supplies water to the temperature and humidity control system 8 through a water conveying pipe 19. In this embodiment, the temperature and humidity control system 8 uses an external water tank 18 for water supply, the external water tank 18 can facilitate actual water supply, and the temperature and humidity control system 8 can also use a built-in water tank in actual implementation.

In order to better generate dust and input the dust into the testing box 2, the dust input assembly comprises a dust box 20, a dust generator 21, a first filter 22, an air inlet pipe 23 and a dust inlet pipe 24, the dust box 20 is fixedly arranged at the bottom in the machine body 1, the dust generator 21 is arranged on the dust box 20, the dust generator 21 is communicated to the testing box 2 through the dust inlet pipe 24, one end of the air inlet pipe 23 is an air inlet, the other end of the air inlet pipe 23 is communicated to the dust inlet pipe 24, and the first filter 22 is arranged on the air inlet pipe 23. In this embodiment, the dust box 20 is used for storing powder, and dust can be emitted from the dust generator 21, and under the exhausting action of the exhaust fan 12, the external air is filtered into clean air by the first filter 22 and mixed and diluted with the dust emitted from the dust generator 21, and then enters the testing box 2, so that the dust input component can well input the air mixed with the dust into the testing box 2. The dust box 20, the dust generator 21 and the first filter 22 are all in the prior art and will not be described in detail here.

In order to discharge dust better, the dust output assembly further comprises an exhaust pipe 25 and a second filter 26, one end of the exhaust pipe 25 is an exhaust port, the other end of the exhaust pipe is communicated to the test box 2, the exhaust pipe 25 is close to one end of the test box 2 and is provided with the second filter 26, the exhaust pipe 25 is close to one end of the exhaust port and is provided with the flowmeter 13, the exhaust pipe 25 is further provided with the exhaust fan 12 and the exhaust fan 12, and the exhaust fan 12 is located between the second filter 26 and the flowmeter 13. In this embodiment, the exhaust pipe 25 is an exhaust passage, and under the action of the exhaust fan 12, the air in the test box 2 passes through the second filter 26, the exhaust fan 12 and the flow meter 13 in sequence, and the second filter 26 is arranged to perform a filtering function, so that the exhaust fan 12 and the flow meter 13 are protected, and the exhausted air is more environment-friendly. In the present embodiment, the first filter 22 and the second filter 26 are both high efficiency filters without partition, which belong to the prior art and are not described in detail herein.

As a preferred technical scheme, middle part in the organism 1 is equipped with mounting panel 27, and the bottom is equipped with bottom plate 28, test box 2 sets firmly the top of mounting panel 27, first filter 22 and second filter 26 all set firmly on the mounting panel 27, external water tank 18, temperature and humidity control system 8, breathing machine 7 and dust box 20 all set firmly on the bottom plate 28. In this embodiment, the middle portion in the machine body 1 is provided with the mounting plate 27, the machine body 1 can be divided into an upper mounting area and a lower mounting area, the partition arrangement structure is reasonable, the actual assembly work can be facilitated, the upper mounting area is provided with the test box 2, the first filter 22 and the second filter 26, and the lower mounting area is provided with the external water tank 18, the temperature and humidity control system 8, the breathing machine 7, the dust box 20 and the dust generator 21.

In order to facilitate the movement of the test device, the bottom of the body 1 is provided with a plurality of moving wheels 29. In this embodiment, the moving wheel 29 arranged at the bottom of the body 1 is a universal wheel, and the mask blockage testing equipment can be moved conveniently by arranging the universal wheel, so that the actual requirement can be better met. The universal wheel belongs to the prior art, and is not specifically described herein.

Preferably, the dust in the dust box 20 is dolomite powder. In this embodiment, the dolomite powder is used for the dust in the dust box 20, which is beneficial to well simulating the actual dust environment, and the dust stored in the dust box 20 during the specific implementation includes but is not limited to the dolomite powder, and other powders can be used according to the actual test requirements.

The fixing manner or the fixing connection manner not described in the embodiment may adopt a connection manner in the prior art according to a specific position, and will not be further specifically described herein.

The working mode is as follows: the method comprises the steps that dolomite powder is filled into a dust box 20, dust is emitted through a dust generator 21, the dolomite powder is extracted through an exhaust fan 12, outside air enters from an air inlet, the outside air is filtered into clean air through a first filter 22, the clean air and the dust are mixed and diluted and enter a test box 2, the air in the test box 2 can be discharged outwards after being filtered through a second filter 26, the whole test process is carried out continuously, the exhaled air passes through a temperature and humidity control system 8 when a respirator 7 acts, the exhaled air is enabled to keep the temperature of about 37 ℃ and the humidity of about 95% RH, then is exhaled from a head die 3 wearing a mask 5 and then is inhaled by the head die 3 wearing the mask 5, the dust concentration in the test box 2 is enabled to be stable at a certain value through a dust determinator 11, and a pressure sensor 4 can test the change of the breathing resistance of the mask 5 in the 1-2 hour breathing process through a collection pipe 9.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concept is not limited to this embodiment, and any modification that utilizes the inventive concept is intended to be within the scope of the present patent application.

Claims (7)

1. A mask blockage testing apparatus, characterized by: the dust testing device comprises a machine body, wherein a testing assembly, a dust input assembly, a dust output assembly, a breathing simulation assembly and a controller for control and data processing are arranged in the machine body, the testing assembly comprises a testing box, a head die and a pressure sensor for testing the breathing resistance of a mask, one side of the testing box is connected with the dust input assembly, the other side of the testing box is connected with the dust output assembly, the head die is arranged in the testing box, the mask is worn on the head die, a breathing zone is formed between the mask and the head die, the breathing simulation assembly comprises a breathing machine, a first connecting pipe, a second connecting pipe, a third connecting pipe and a temperature and humidity control system, an air suction port of the breathing machine is communicated with the breathing zone through the first connecting pipe, an exhalation port of the breathing machine is connected with the temperature and humidity control system through the second connecting pipe, and the temperature and humidity control system is communicated with the breathing zone through the third connecting pipe, the pressure sensor is connected with a collecting pipe, the collecting pipe extends into the breathing area after passing through the head die, a probe used for detecting the concentration of dust in the test box is arranged in the test box, a dust tester connected with the probe is arranged outside the test box, and the dust output assembly comprises an exhaust fan and a flowmeter used for detecting the exhaust flow.

2. A mask blockage testing apparatus according to claim 1, wherein: the temperature and humidity control system comprises an external water tank, and the external water tank supplies water to the temperature and humidity control system through a water delivery pipe.

3. A mask blockage testing apparatus according to claim 2, wherein: the dust input assembly comprises a dust box, a dust generator, a first filter, an air inlet pipe and a dust inlet pipe, the dust box is fixedly arranged at the bottom in the machine body, the dust generator is arranged on the dust box, the dust generator is communicated to the test box through the dust inlet pipe, one end of the air inlet pipe is an air inlet, the other end of the air inlet pipe is communicated to the dust inlet pipe, and the first filter is arranged on the air inlet pipe.

4. A mask blockage testing apparatus according to claim 3, wherein: the dust output assembly further comprises an exhaust pipe and a second filter, one end of the exhaust pipe is an exhaust port, the other end of the exhaust pipe is communicated to the test box, the exhaust pipe is close to one end of the test box, the second filter is arranged at one end of the exhaust pipe, the exhaust pipe is close to one end of the exhaust port, the flowmeter is arranged at one end of the exhaust pipe, and the exhaust pipe is further provided with the exhaust fan and the exhaust fan located between the second filter and the flowmeter.

5. A mask blockage testing apparatus according to claim 4, wherein: the middle part in the organism is equipped with the mounting panel, and the bottom is equipped with the bottom plate, the test box sets firmly the top of mounting panel, first filter and second filter all set firmly on the mounting panel, external water tank, temperature and humidity control system, breathing machine and dust box all set firmly on the bottom plate.

6. A mask blockage testing apparatus according to claim 5, wherein: the bottom of the machine body is provided with a plurality of movable wheels.

7. A mask blockage testing apparatus according to claim 6, wherein: the dust in the dust box is made of dolomite powder.

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