阅读说明：本技术 双向气流真菌孢子释放强度测试装置 (Bidirectional airflow fungal spore release strength testing device ) 是由 李西安 邱露 韩吉才 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种双向气流真菌孢子释放强度测试装置,它属于孢子释放测试装置领域,其解决了现有技术中缺少一种在不破坏被测材料的同时可以测试平行气流和垂直气流不同冲刷模式下真菌孢子释放强度,使用方便的双向气流真菌孢子释放强度测试装置的问题。它主要包括机壳,机壳上设有吹风装置和控制器,控制器与操作显示屏连接,所述吹风装置连接有过滤器Ⅱ,过滤器Ⅱ与电磁阀连接,电磁阀的两个出风口分别通过风道与垂直出风口和平行出风口连接,机壳内设有风道,风道与采样室连接,采样室与过滤器Ⅰ连接,过滤器Ⅰ1的出风口与外界相通,采样室一侧的风道上设有流量计Ⅰ。本发明主要用于真菌孢子释放强度测试。(The invention discloses a bidirectional airflow fungal spore release strength testing device, belongs to the field of spore release testing devices, and solves the problem that a bidirectional airflow fungal spore release strength testing device which can test fungal spore release strength under different scouring modes of parallel airflow and vertical airflow without damaging a tested material and is convenient to use is absent in the prior art. It mainly includes the casing, is equipped with blast apparatus and controller on the casing, and the controller is connected with operation display screen, blast apparatus is connected with filter II, and filter II is connected with the solenoid valve, and two air outlets of solenoid valve are connected with perpendicular air outlet and parallel air outlet through the wind channel respectively, are equipped with the wind channel in the casing, and the wind channel is connected with the sampling chamber, and the sampling chamber is connected with filter I, and the air outlet of filter I1 communicates with each other with the external world, is equipped with flowmeter I on the wind channel of sampling chamber one side. The invention is mainly used for testing the release strength of the fungal spores.)

1. The utility model provides a two-way air current fungal spore release intensity testing arrangement, includes casing (17), is equipped with blast apparatus (5) and controller (18) on casing (17), and controller (18) are connected with operation display screen (14), its characterized in that: blowing device (5) are connected with filter II (6), filter II (6) are connected with solenoid valve (13), two air outlets of solenoid valve (13) are connected with perpendicular air outlet (4) and parallel air outlet (9) respectively, be equipped with wind channel (15) in casing (17), wind channel (15) are connected with sampling chamber (2), sampling chamber (2) are connected with filter I (1), be equipped with flowmeter I (3) on wind channel (15) of sampling chamber (2) one side, be equipped with flowmeter II (8) on wind channel (15) between filter II (6) and solenoid valve (13), sampling chamber (2) are connected with detection device (10), controller (18) respectively with blowing device (5), solenoid valve (13), flowmeter I (3) and flowmeter II (8) are connected.

2. The bi-directional airflow fungal spore release strength testing device of claim 1, wherein: and the blowing device (5) comprises a fan and a handle, the air outlet of the fan is connected with the filter II (6), and the operation display screen (14) is arranged on the handle.

3. The bi-directional airflow fungal spore release strength testing device of claim 1, wherein: the detection device (10) is connected with the sampling chamber (2) through a hose (7), and the bottom of the detection device (10) is provided with a universal locking wheel (16).

4. The bi-directional airflow fungal spore release strength testing device of claim 1, wherein: and a sealing gasket (11) is arranged on the shell (17).

5. The bi-directional airflow fungal spore release strength test device according to claim 1 or 3, wherein: the detection device (10) is a microorganism aerosol real-time monitor or a particle counter.

6. The bi-directional airflow fungal spore release strength testing device of claim 3, wherein: the hose (7) is a winding coil type hose.

Technical Field

The invention relates to a spore release testing device, in particular to a bidirectional airflow fungal spore release strength testing device.

Background

Fungal spores are attached to walls and are easily wrapped by airflow to form aerosol which is dispersed in rooms, so that the air quality is reduced, and the human health is harmed. Fungal spores growing on indoor walls or in air-conditioning systems are excited by the action of air flow, and the fungi growing on the surfaces of the devices are released under the action of parallel and vertical sweeping air flow scouring to enter air to form biological aerosol. Under the action of parallel air flow, the spore is in the boundary layer of the air flow near the surface of the material, and the spore is mainly subjected to air flow force which is much smaller than the inertia force of the air flow when the air is jetted. More spores will be released under the jet impact. The effect of the air jet on the release of the fungal spores needs to be taken into account and should be ensured to be carried out without destroying the sample to be tested.

The invention discloses a method and a device for testing the release strength of parallel airflow fungal spores (an authorization publication number CN101314758B), and discloses a device and a method for testing the release strength of the parallel airflow fungal spores on the surfaces of different materials of an air-conditioning system. However, there are the following problems: the air supply outlet releases spores by adopting parallel airflow, but the influence of vertical airflow on spore release is not considered; and (3) damaging the sample to be detected, taking out a part of the sample to be detected, and detecting the part in an instrument, wherein if a wall surface and the like are detected, the object to be detected needs to be damaged. The above technical scheme does not consider the influence of different scouring directions (air jet and parallel air flow) on the release of fungal spores and the condition that the tested object is inconvenient to carry out local sampling.

At present, a bidirectional airflow fungal spore release strength testing device which can test fungal spore release strength under different scouring modes of parallel airflow and vertical airflow without damaging a tested material and is convenient to use is lacking.

Disclosure of Invention

The invention aims to provide a bidirectional airflow fungal spore release strength testing device, and aims to solve the problem that a bidirectional airflow fungal spore release strength testing device which can test fungal spore release strengths of parallel airflow and vertical airflow in different scouring modes without damaging a tested material and is convenient to use is absent in the prior art.

The invention is realized by the following technical scheme:

the utility model provides a two-way air current fungal spore release strength test device, includes the casing, is equipped with blast apparatus and controller on the casing, and the controller is connected with operation display screen, blast apparatus is connected with filter II, and filter II is connected with the solenoid valve, and two air outlets of solenoid valve are connected with perpendicular air outlet and parallel air outlet through the wind channel respectively, are equipped with the wind channel in the casing, and the wind channel is connected with the sampling chamber, and the sampling chamber is connected with filter I, and filter I1's air outlet communicates with each other with the external world, is equipped with flowmeter I on the wind channel of sampling chamber one side, is equipped with flowmeter II on the wind channel between filter II and the solenoid valve, and the sampling chamber is connected with detection device, the controller respectively with blast apparatus, the solenoid valve, flowmeter I and flowmeter II are connected.

Further, blast apparatus include fan and handle, filter II is connected to the fan air outlet, the operation display screen is located on the handle.

Furthermore, the detection device is connected with the sampling chamber through a hose, and the bottom of the detection device is provided with a universal locking wheel.

Furthermore, a sealing gasket is arranged on the shell.

Further, the detection device is a microorganism aerosol real-time monitor or a particle counter.

Further, the hose is a wire-wound coil hose.

Compared with the prior art, the invention has the beneficial effects that:

1. three different airflow modes, namely vertical airflow, parallel airflow and vertical and parallel mixed airflow, are controlled by the electromagnetic valve, and the release strength of the fungal spores under the action of various airflows is tested.

2. The sample is taken by hand and is tightly attached to the surface of an object to be measured, so that the content of fungal spores of the object to be measured at each position can be conveniently measured, the object to be measured is not damaged, and the use is convenient.

3. The bottom of the real-time microbial aerosol monitor is provided with universal locking wheels, so that the real-time microbial aerosol monitor can be more conveniently pushed and fixed.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of a gasket seal of the present invention.

In the figure: 1. a filter I; 2. a sampling chamber; 3. a flowmeter I; 4. a vertical air outlet; 5. a blowing device; 6. a filter II; 7. a hose; 8. a flowmeter II; 9. a parallel air outlet; 10. a detection device; 11. sealing gaskets; 12. an article to be tested; 13. an electromagnetic valve; 14. operating the display screen; 15. an air duct; 16. a universal locking wheel; 17. a housing; 18. and a controller.

Detailed Description

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

Embodiment 1, a bidirectional airflow fungal spore release strength testing device, comprising a casing 17, wherein a blowing device 5 and a controller 18 are arranged on the casing 17, the controller 18 is connected with an operation display screen 14, the blowing device 5 is connected with a filter ii 6, the filter ii 6 is connected with an electromagnetic valve 13, two air outlets of the electromagnetic valve 13 are respectively connected with a vertical air outlet 4 and a parallel air outlet 9 through an air duct, the operation display screen 14 can control the electromagnetic valve 13 to open the corresponding air outlets, namely three blowing modes of controlling the ventilation of the vertical air outlet 4, the ventilation of the parallel air outlet 9, the ventilation of the vertical air outlet 4 and the ventilation of the parallel air outlet 9, the casing 17 is internally provided with the air duct 15, the air duct 15 is connected with a sampling chamber 2, the sampling chamber 2 is connected with a filter i 1, the air outlet of the filter i 1 is communicated with the outside through the air duct, so as to ensure that the air discharged into the air is clean air, the air duct 15 on one side of the sampling chamber 2 is provided with a flowmeter I3, the air duct 15 between the filter II 6 and the electromagnetic valve 13 is provided with a flowmeter II 8, the sampling chamber 2 is connected with the detection device 10, the controller 18 is respectively connected with the blowing device 5, the electromagnetic valve 13, the flowmeter I3 and the flowmeter II 8, and the flow measured by the flowmeter I3 and the flowmeter II 8 is displayed on the operation display screen 14 and used for calculating the condition of the fungal spore aerosol.

Embodiment 2, a bidirectional airflow fungal spore release strength testing device, the blowing device 5 includes a fan and a handle, the fan outlet is connected with a filter II 6, and an operation display screen 14 is arranged on the handle; the detection device 10 is connected with the sampling chamber 2 through a hose 7, and the bottom of the detection device 10 is provided with a universal locking wheel 16; the front end of the shell 17 is provided with a housing, and a sealing gasket 11 is arranged at the contact part of the housing and the object 12 to be detected; the detection device 10 is a microorganism aerosol real-time monitor or a particle counter, the hose 7 is a wire-wound disc type hose which can be stretched or contracted, and the rest is the same as that of the embodiment 1.

The fan wind speed can be adjusted through the operation display screen 14, the air current that the fan blew out passes through the solenoid valve 13 after filtering through filter II 6, the break-make of two air-out valve openings of solenoid valve 13, through operation display screen 14 control, select one of three kinds of modes of blowing that perpendicular air outlet 4 ventilates, parallel air outlet 9 ventilates, perpendicular air outlet 4 and parallel air outlet 9 ventilate promptly, when handheld sample, be equipped with seal gasket 11 on the casing 17 in the wind channel 15 outside, it hugs closely the article 12 terminal surfaces that await measuring to make seal gasket 11 on the casing hug closely with the casing 17 to compress tightly by hand, and then make the inside wind channel 15 of casing at casing 17 front end form a relatively inclosed environment, the test just so can go on under the condition of not destroying the sample that awaits measuring. The air flow formed by the vertical air outlet 4 and the parallel air outlet 9 in each blowing mode blows off and releases the attached fungal spores, the fungal spores enter the sampling chamber 2 through the air duct 15, the fungal spores entering the sampling chamber 2 enter the microorganism aerosol real-time monitor or the particle counter through the hose 7 to analyze the content of the fungal spores in the obtained aerosol, and the fungal spore release strength is calculated according to the formula (1). And finally, the gas is discharged after being filtered by the filter I1, so that the environment is protected and no pollution is caused. The universal locking wheel 16 enables the microorganism aerosol real-time monitor or the particle counter to be more conveniently pushed and fixed.

Wherein R is fungal spore release intensity (per cm)^-2min^-1))，N₁The number of spores to be detected by the microbial aerosol detector is SArea (cm) of test surface of object²) T is the test time (min), Q₁Is the sampling flow (L min) of the microbial aerosol detector^-1) And Q is the flow rate of the air flow in the air duct (L min)^-1)。