Air self-purification system for respiratory protection equipment detection box

Abstract

The utility model discloses an air self-purification system for a respiratory protection equipment detection box, which relates to the technical field of respiratory protection equipment detection equipment, and comprises an air supply device, a high-efficiency air filter and an exhaust filter, the air outlet of the air supply device is communicated with the air inlet of the high-efficiency air filter through a connector, and the air outlet of the high-efficiency air filter is communicated with the exhaust filter through a connector. An air outlet of the high-efficiency air filter is communicated with an air inlet of the detection box, and each exhaust port of the detection box is provided with the exhaust filter. Ambient air is filtered through an HEPA efficient filter, and it is guaranteed that air entering the detection box is clean.

Description

Technical Field

[0001] The utility model relates to the technical field of respiratory protection equipment detection equipment, in particular to an air self-purification system used in a respiratory protection equipment detection box. Background Art

[0002] With the increasing number of highly pathogenic infectious diseases and highly contagious mass infection events with increasingly shorter occurrence cycles, such as SARS and the new coronavirus, respiratory protective equipment such as powered air-exhaust filter respirators that respond to biological threats and unknown viruses and biological contamination are playing an increasingly key role in the large-scale isolation and transportation of mass infected personnel. It can play a key role in quickly isolating abnormally infected personnel and effectively curbing the speed of transmission. Since respiratory protective equipment plays an important role in protecting the human respiratory system, it is very important to detect and control the performance of respiratory protective equipment.

[0003] The existing devices or instruments for testing the performance of respiratory protective equipment such as powered air-exhaust filtering respirators are relatively simple, and none of them can self-purify the testing environment. Testing environment purification mainly means that the air in the test box should be clean, so as to achieve the cleanliness required for the test.

[0004] The existing detection devices of respiratory protective equipment cannot meet the requirements of the detection environment. The existing technology can only meet the requirements of the detection environment through other means or indirect methods, such as:

[0005] (1) The existing detection device of respiratory protective equipment is only a single detection device and does not have the function of changing the detection environment. For example, the laser particle counter for detecting the filtration efficiency of respiratory protective equipment can only detect the number of particle sizes in the current environment and cannot change the detection environment. If the detection environment is polluted, the particle size and number of particles will affect the detection results. In this case, other devices are needed to ensure the requirements of the detection environment;

[0006] (2) In order to test powered air-purifying respirators without a corresponding clean environment, it is necessary to transport the objects to be tested and different testing equipment to a place with clean room requirements, rebuild the testing equipment, operate the clean room, and conduct relevant tests after the environment of the place meets the clean environment requirements of the test;

[0007] (3) In special periods such as wartime, when the clean room is damaged by an earthquake, or when temporary inspection of relevant inspection objects is required in the field, there is no clean inspection environment and it is impossible to conduct timely inspection of the picked objects. It is necessary to build a dedicated inspection environment, which is time-consuming and labor-intensive.

[0008] The above-mentioned existing processing methods will result in cumbersome testing steps and inconsistent testing environment indicators. Testing the indicators of relevant protective equipment such as powered air-exhaust filtering respirators in an unpurified testing environment will cause inaccurate data, especially when testing related test items such as filtration efficiency, leakage rate, dead space, etc. specified in the standards. When the same type of test is performed on the same protective equipment without environmental self-purification, the different testing environments will make the test results non-referenceable. Utility Model Content

[0009] The utility model aims to provide an air self-purification system for a respiratory protection equipment test box, so as to solve the problems existing in the above-mentioned prior art and realize the self-purification of the air in the respiratory protection equipment test box.

[0010] To achieve the above purpose, the utility model provides the following solutions:

[0011] The utility model provides an air self-purification system for a respiratory protection equipment test box, comprising an air supply device, a high-efficiency air filter and an exhaust filter, wherein the air outlet of the air supply device is communicated with the air inlet of the high-efficiency air filter through a connecting port, the air outlet of the high-efficiency air filter is communicated with the air inlet of the test box, and each exhaust port of the test box is provided with the exhaust filter.

[0012] Preferably, the ambient air outside the detection box needs to be filtered by the exhaust filter before entering the detection box through the exhaust port.

[0013] Preferably, the air supply device adopts a speed-adjustable fan.

[0014] Preferably, the air inlet of the detection box is arranged at the top of the detection box, and the air inlet of the detection box, the high-efficiency air filter and the air supply device are distributed in sequence from bottom to top.

[0015] Preferably, a controller is further included, the speed-regulating fan is connected to the controller signal, and the controller is used to adjust the rotation speed of the speed-regulating fan.

[0016] Preferably, an on / off switch and an emergency stop switch for controlling the air supply device are also provided on the outer side wall of the detection box.

[0017] Preferably, the ventilation volume of all the exhaust filters is smaller than the ventilation volume of all the high-efficiency air filters.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The air self-purification system of the respiratory protection equipment test box of the utility model filters the ambient air through a high-efficiency air filter, namely, a HEPA high-efficiency filter, to ensure that the air entering the test box is clean; in addition, under a natural state, the ambient air outside the test box also needs to be filtered by the exhaust filter before entering the test box, thereby ensuring the cleanliness of the air in the test box and preventing unclean ambient air from entering the test box when the test box is not working, thereby affecting the test environment in the test box.

[0020] Furthermore, by making the ventilation volume of all exhaust filters smaller than the ventilation volume of all high-efficiency air filters, the air intake of the test box can be larger than the exhaust volume of the test box, thereby forming a positive pressure environment in the test box, thereby preventing outside air from entering the test box through the exhaust port or other possible air leaks during operation, preventing external pollutants from contaminating the space inside the test box.

[0021] Furthermore, the air supply device in this embodiment adopts a speed-adjustable fan, and the speed of the fan can be adjusted to meet the detection demand for the air intake volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of the structure of the air self-purification system of the utility model for the respiratory protection equipment test box;

[0024] Figure 2 This is a schematic diagram of the structure of the air self-purification system of the utility model for the respiratory protection equipment test box;

[0025] Figure 3 This is a schematic diagram of the working principle of the air self-purification system used in the respiratory protection equipment test box of the utility model;

[0026] in:

[0027] 1. Test box;

[0028] 2. Air supply device;

[0029] 3. High efficiency air filter;

[0030] 4. Exhaust filter;

[0031] 5. Open and close switch;

[0032] 6. Emergency stop switch;

[0033] 7. Communication interface. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The utility model aims to provide an air self-purification system for a respiratory protection equipment test box, so as to solve the problems existing in the above-mentioned prior art and realize the self-purification of the air in the respiratory protection equipment test box.

[0036] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] like Figures 1 to 3 As shown, this embodiment provides an air self-purification system for a respiratory protection equipment test box, including an air supply device 2, a high-efficiency air filter 3 and an exhaust filter 4. The air outlet of the air supply device 2 is connected to the air inlet of the high-efficiency air filter 3 through a connecting port, and the air outlet of the high-efficiency air filter 3 is connected to the air inlet of the test box 1. An exhaust filter 4 is provided on each exhaust port of the test box 1.

[0038] The air self-purification system for the respiratory protection equipment test box of this embodiment sends ambient air to the high-efficiency air filter 3 for filtration through the air supply device 2. The ambient air enters the test box 1 after being filtered by the high-efficiency air filter 3, i.e., the HEPA high-efficiency filter, to ensure that the air entering the test box 1 is clean. The air in the test box 1 can be discharged from the test box 1 after being filtered by the exhaust filter 4.

[0039] It is worth mentioning that the ambient air outside the test box 1 needs to be filtered by the exhaust filter 4 before it can enter the test box 1 through the exhaust port, that is, under natural conditions, the ambient air outside the test box 1 also needs to be filtered by the exhaust filter 4 before it can enter the test box 1, thereby ensuring the cleanliness of the air in the test box 1 and preventing unclean ambient air from entering the test box 1 when the test box 1 is not working, thereby affecting the test environment in the test box 1.

[0040] Among the optional schemes of this embodiment, it is more preferred that the air supply device 2 adopts a speed-regulating fan. The speed-regulating fan facilitates the adjustment of the fan speed to meet the detection requirements for the air intake volume. In addition, in practice, other types of existing air supply equipment such as air pumps can be used to replace the speed-regulating fan as the air supply device 2 in this embodiment.

[0041] In the optional scheme of this embodiment, it is more preferred that the air inlet of the detection box 1 is arranged at the top of the detection box 1, and the air inlet of the detection box 1, the high-efficiency air filter 3 and the air supply device 2 are distributed in sequence from bottom to top; this structural design is firstly more beautiful, and secondly, the air inlet of the air supply device 2 is located at a higher position, and generally indoor air is affected by factors such as human activities, and the cleanliness of the ambient air in a higher space is higher, so setting the air inlet of the air supply device 2 at a higher position can ensure the quality of the ambient air being transported.

[0042] Among the optional schemes of this embodiment, the more preferred one also includes a controller, the speed regulating fan is connected to the controller signal, and the controller is used to adjust the speed of the speed regulating fan; the controller adopts the existing technology; further, in this embodiment, a communication interface 7 is preferably set on the outer wall of the control box, and the communication interface 7 is connected to the speed regulating fan signal, so that the controller can be connected to the communication interface 7 to realize the signal connection between the controller and the speed regulating fan.

[0043] In the optional scheme of this embodiment, it is more preferred that an on / off switch 5 and an emergency stop switch 6 for controlling the air supply device 2 are also provided on the outer wall of the detection box 1, the on / off switch 5 is used to control the on / off of the air supply device 2, and the emergency stop switch 6 controls the air supply device 2 and other equipment in the detection box 1 to stop working urgently; of course, the air supply device 2 also needs to be connected to a power source through a power cord.

[0044] In the optional scheme of the present embodiment, it is more preferred that the ventilation volume of all exhaust filters 4 is smaller than the ventilation volume of all high-efficiency air filters 3. By making the ventilation volume of all exhaust filters 4 smaller than the ventilation volume of all high-efficiency air filters 3, the air intake volume of the detection box 1 can be greater than the exhaust volume of the detection box 1, thereby forming a positive pressure environment in the detection box 1, thereby preventing outside air from entering the detection box 1 through the exhaust port or other possible air leakage ports during operation, preventing external pollutants from polluting the space inside the detection box 1.

[0045] In the description of the present invention, it should be noted that the terms "top", "bottom", "up", "down", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An air self-purification system for a respiratory protection equipment test box, characterized in that: It includes an air supply device, a high-efficiency air filter and an exhaust filter. The air outlet of the air supply device is connected to the air inlet of the high-efficiency air filter through a connecting port. The air outlet of the high-efficiency air filter is connected to the air inlet of the detection box. The exhaust filter is arranged on each exhaust port of the detection box.

2. The air self-purification system for a respiratory protection equipment test box according to claim 1, characterized in that: The ambient air outside the detection box needs to be filtered by the exhaust filter before entering the detection box through the exhaust port.

3. The air self-purification system for a respiratory protection equipment test box according to claim 1, characterized in that: The air supply device adopts a speed-adjustable fan.

4. The air self-purification system for a respiratory protection equipment test box according to claim 1, characterized in that: The air inlet of the detection box is arranged at the top of the detection box, and the air inlet of the detection box, the high efficiency air filter and the air supply device are distributed in sequence from bottom to top.

5. The air self-purification system for a respiratory protection equipment test box according to claim 3 is characterized in that: It also includes a controller, the speed-regulating fan is connected to the controller signal, and the controller is used to adjust the rotation speed of the speed-regulating fan.

6. The air self-purification system for a respiratory protection equipment test box according to claim 1, characterized in that: An on / off switch and an emergency stop switch for controlling the air supply device are also provided on the outer side wall of the detection box.

7. The air self-purification system for a respiratory protection equipment test box according to claim 1, characterized in that: The ventilation volume of all the exhaust filters is smaller than the ventilation volume of all the high efficiency air filters.

Images