Civil air defense door with air purifying and filtering functions

Abstract

The civil air defense door with the air purifying and filtering functions comprises a civil air defense door body, an air inlet driving mechanism is arranged at the upper end of the inner side wall of the civil air defense door body, and a self-cleaning filtering mechanism is arranged at the lower end of the inner side wall of the civil air defense door body. An air inlet and an air outlet are formed in the upper end and the lower end of the civil air defense door body correspondingly. The filter element ring is simple in structure and reasonable in design, the pollution part can continuously rotate to pass through the exhaust port through rotation of the filter element ring, the effect that particle impurities embedded in the pollution part of the filter element ring are blown out of the door is achieved through backflushing of exhaust airflow, the filtering efficiency of the filter element ring under the long-time working condition is guaranteed, and the service life of the filter element ring is prolonged. And meanwhile, high-speed air flow of inlet air is matched with the gearbox to drive the mounting wheel disc and the filter element ring to rotate, use of other driving equipment is avoided, energy loss is reduced, and the cruising ability of the whole ventilation structure is improved under the condition that the electric quantity is limited.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense equipment, in particular to a civil air defense door with air purification and filtering functions. Background Art

[0002] In modern urban construction, the importance of civil air defense projects is increasing, especially in wars. As an important part of civil air defense projects, civil air defense doors can effectively isolate explosion shock waves, radioactive dust, biochemical pollutants, etc. As an important part of civil air defense projects, civil air defense doors not only require a solid structure to resist external physical attacks and environmental impacts, but also need to be equipped with appropriate ventilation equipment to ensure the normal breathing of internal personnel.

[0003] Deficiencies of existing technology:

[0004] Currently, the common ventilation structure of civil air defense doors usually includes an air inlet, an exhaust port, a fan and a filter element. During wartime, when the civil air defense door is in working condition, the ventilation structure is opened, and the external turbid air is filtered through the filter element and enters the door. At the same time, the air is discharged from the inside through the fan to achieve circulation to ensure the health of the people inside. Although this structure has been widely used in existing civil air defense doors, it still has significant defects. When the ventilation structure works for a long time, the filter element will be blocked by dust and other impurities in the external environment, resulting in weakened air circulation capacity and reduced filtration efficiency. In order to ensure normal ventilation function, it is usually necessary to remove the equipment regularly to replace or clean the filter element, which obviously increases the complexity of use. It may be difficult to achieve without professional maintenance personnel, and it is not practical. The maintenance process also reduces the safety of the civil air defense door. Utility Model Content

[0005] The purpose of the utility model is to provide a civil air defense door with air purification and filtering functions to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a civil air defense door with air purification and filtering function, comprising a civil air defense door body, an air intake drive mechanism is arranged at the upper end of the inner side wall of the civil air defense door body, a self-cleaning filtering mechanism is arranged at the lower end of the inner side wall of the civil air defense door body, and an air intake port and an exhaust port are respectively opened at the upper and lower ends of the civil air defense door body;

[0007] The self-cleaning filtering mechanism comprises:

[0008] A mounting wheel disc is rotatably connected to a mounting groove inside the main body of the civil air defense door, a wheel axle of the mounting wheel disc passes through a hole on the main body of the civil air defense door and is connected to an air intake drive mechanism, a filter ring is provided through the mounting wheel disc, and the upper and lower ends of the filter ring pass through an air inlet and an exhaust port respectively;

[0009] An exhaust fan is arranged at the lower end of the inner wall of the civil air defense door body, the exhaust port is located on the inner side of the civil air defense door body and a downwind duct is arranged, and the output end of the exhaust fan is connected to the input end of the downwind duct through an air duct.

[0010] Preferably, the air intake drive mechanism comprises:

[0011] A gearbox, the gearbox is arranged on the inner side of the civil air defense door body, and the output end of the gearbox is connected to the axle on which the wheel disc is installed;

[0012] An air guide cover, which is arranged on one side of the gearbox housing, and a wind wheel is rotatably connected to the inner side of the air guide cover, and the wheel shaft of the wind wheel is connected to the input end of the gearbox;

[0013] The air intake fan is arranged at the upper end of the inner wall of the civil defense door body, the output end of the air intake fan is connected to the upper end of the air guide cover through an air duct, the air inlet is located on the inner side of the civil defense door body and is provided with an upper air duct, and the input end of the air intake fan is connected to the upper air duct through an air duct.

[0014] Preferably, brush strips are provided on one side of the air inlet and the air outlet adjacent to the filter ring.

[0015] Preferably, the air inlet and the exhaust port are located at one end on the outside of the civil air defense door body and are provided with a louver protective window.

[0016] Preferably, both the input end of the exhaust fan and the output end of the air inlet fan are provided with protective covers.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The civil air defense door with air purification and filtering function is provided with a self-cleaning filtering mechanism, which includes a mounting wheel, a filter ring, an exhaust fan and a downwind duct. The filter ring rotates so that the contaminated part can continuously rotate through the exhaust port, and the particle impurities embedded in the contaminated part of the filter ring are blown out of the door by the backwash of the exhaust air flow, thereby ensuring the filtering efficiency of the filter ring under the condition of long-term working, reducing the maintenance frequency, and improving the practicality and safety of the civil air defense door;

[0019] The civil air defense door with air purification and filtering function is provided with an air intake drive mechanism, which includes a gearbox, an air guide cover, a wind wheel, an air inlet fan and an upper air duct. The high-speed airflow of the intake air is cooperated with the gearbox to drive the installation wheel and the filter ring to rotate, thereby avoiding the use of other driving devices, reducing energy loss, and improving the endurance of the entire ventilation structure under limited power conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is the overall front view of the utility model;

[0021] Figure 2 It is a side view schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is the front view of the installation wheel of the utility model;

[0023] Figure 4 This is a schematic diagram of the installation position of the brush strip of the utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the air guide cover of the utility model;

[0025] Figure 6 For the utility model Figure 2 A magnified schematic diagram at point A in FIG.

[0026] In the figure: 1. Civil air defense door body; 2. Air intake drive mechanism; 201. Gearbox; 202. Wind guide cover; 203. Wind wheel; 204. Air inlet fan; 205. Upper air duct; 3. Self-cleaning filter mechanism; 301. Mounting wheel; 302. Filter ring; 303. Exhaust fan; 304. Lower air duct; 4. Air inlet; 5. Exhaust outlet; 6. Brush strip; 7. Shutter protection window; 8. Protective cover. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0031] See also Figure 1-6As shown, the utility model provides a technical solution for a civil air defense door with air purification and filtering functions: a civil air defense door with air purification and filtering functions, including a civil air defense door main body 1, an air intake drive mechanism 2 is installed at the upper end of the inner side wall of the civil air defense door main body 1, and a self-cleaning filtering mechanism 3 is installed at the lower end of the inner side wall of the civil air defense door main body 1, and an air inlet 4 and an exhaust port 5 are respectively opened at the upper and lower ends of the civil air defense door main body 1; the self-cleaning filtering mechanism 3 includes an installation wheel 301 and an exhaust fan 303, the installation wheel 301 is rotatably connected to the installation groove inside the civil air defense door main body 1, and the wheel axle of the installation wheel 301 passes through the hole on the civil air defense door main body 1 and is connected to the inlet The air drive mechanism 2 is connected, and a filter ring 302 is installed on the installation wheel 301. The upper and lower ends of the filter ring 302 pass through the air inlet 4 and the exhaust port 5 respectively. The exhaust fan 303 is installed at the lower end of the inner wall of the civil defense door body 1 through a bracket. The exhaust port 5 is located on the inner side of the civil defense door body 1 and a downwind duct 304 is fixedly installed. The output end of the exhaust fan 303 is connected to the input end of the downwind duct 304 through an air duct. When the civil defense door is closed for ventilation, the air intake drive mechanism 2 and the exhaust fan 303 are started first. The air intake drive mechanism 2 introduces external air from the air inlet 4, which is filtered by the filter ring 302 and then introduced into the inner side of the civil defense door body 1. Under the guidance of the exhaust fan 303 and the downwind duct 304, the turbid air on the inner side of the civil air defense door body 1 is discharged from the exhaust port 5 through the filter element ring 302. At the same time, under the drive of the air intake drive mechanism 2, the installation wheel 301 starts to drive the filter element ring 302 to rotate slowly. As the installation wheel 301 rotates, the contaminated part of the filter element ring 302 will leave the air inlet 4 and rotate through the exhaust port 5, and be hit by the recoil of the airflow from the exhaust port 5, so that the particles on the contaminated part of the filter element ring 302 are blown out for cleaning, and the cycle continues. Through the self-cleaning filter mechanism 3, the filter element ring 302 rotates so that the contaminated part can continuously rotate through the exhaust port 5, and the recoil of the exhaust airflow is used to blow the particulate impurities embedded in the contaminated part of the filter element ring 302 out of the door, thereby ensuring the filtration efficiency of the filter element ring 302 under long-term working conditions, reducing the maintenance frequency, and improving the practicality and safety of the civil air defense door.

[0032] The air intake drive mechanism 2 includes a gearbox 201, an air guide cover 202 and an air inlet fan 204. The gearbox 201 is installed on the inner side of the civil air defense door body 1. The output end of the gearbox 201 is connected to the axle of the installation wheel 301. The air guide cover 202 is fixedly installed on one side of the gearbox 201 box. The inner side of the air guide cover 202 is rotatably connected with a wind wheel 203. The axle of the wind wheel 203 is connected to the input end of the gearbox 201. The air inlet fan 204 is installed on the upper end of the inner wall of the civil air defense door body 1 through a bracket. The output end of the air inlet fan 204 is connected to the upper end of the air guide cover 202 through an air duct. The air inlet 4 is located on the inner side of the civil air defense door body 1 and is installed with an upper air duct 205. The input end of the air inlet fan 204 is connected to the upper air duct 205 through an air duct. When the air intake drive mechanism 2 is working, the air intake fan 204 is started, and the air intake fan 204 sucks external air from the air inlet 4 and inputs it into the wind guide cover 202. The airflow drives the wind wheel 203 to start driving the input shaft of the gearbox 201 to rotate. Under the transmission action of the gearbox 201, its output end drives the filter ring 302 and the mounting wheel 301 to rotate in the mounting groove in the civil defense door body 1. Finally, the filtered external air is discharged from the lower end of the wind guide cover 202, and passes through the air intake drive mechanism 2. The high-speed airflow of the intake air is used in conjunction with the gearbox 201 to drive the mounting wheel 301 and the filter ring 302 to rotate, thereby avoiding the use of other driving devices, reducing energy loss, and improving the endurance of the entire ventilation structure when power is limited.

[0033] Brush strips 6 are installed on the side of the air inlet 4 and the exhaust port 5 adjacent to the filter ring 302. During the rotation of the filter ring 302, the high-density brush strips 6 brush along the surface of the filter ring 302 to ensure a certain degree of sealing, and can also brush away dust on the surface of the filter ring 302 to improve the self-cleaning effect.

[0034] The air inlet 4 and the exhaust port 5 are located at one end of the outer side of the civil air defense door body 1, and a shutter protective window 7 is installed. The shutter protective window 7 is made of thicker iron bars and can have stronger protection capabilities.

[0035] The input end of the exhaust fan 303 and the output end of the air inlet 204 are both installed with a protective cover 8, which can prevent large particles of impurities from entering the exhaust fan 303 and causing damage to the exhaust fan 303, and can also prevent children from putting their hands into the air inlet 204 and being injured by the wind wheel 203.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A civil air defense door with air purification and filtering functions, comprising a civil air defense door body (1), characterized in that: An air intake drive mechanism (2) is provided at the upper end of the inner side wall of the civil air defense door body (1), a self-cleaning filter mechanism (3) is provided at the lower end of the inner side wall of the civil air defense door body (1), and an air intake port (4) and an air exhaust port (5) are respectively provided at the upper and lower ends of the civil air defense door body (1); The self-cleaning filtering mechanism (3) comprises: A mounting wheel (301), the mounting wheel (301) being rotatably connected to a mounting groove inside the civil air defense door body (1), the wheel axle of the mounting wheel (301) passing through a hole on the civil air defense door body (1) and connected to the air intake drive mechanism (2), the mounting wheel (301) being provided with a filter ring (302) penetrating therethrough, the upper and lower ends of the filter ring (302) respectively passing through the air intake port (4) and the air exhaust port (5); An exhaust fan (303), the exhaust fan (303) being arranged at the lower end of the inner wall of the civil air defense door body (1), the exhaust port (5) being located on the inner side of the civil air defense door body (1) and provided with a downwind duct (304), the output end of the exhaust fan (303) being connected to the input end of the downwind duct (304) via an air duct.

2. The civil air defense door with air purification and filtering function according to claim 1 is characterized in that: The air intake drive mechanism (2) comprises: A gearbox (201), the gearbox (201) being arranged on the inner side of the civil air defense door body (1), and the output end of the gearbox (201) being connected to the axle on which the wheel disc (301) is installed; An air guide cover (202), the air guide cover (202) being arranged on one side of a housing of the gearbox (201), a wind wheel (203) being rotatably connected to the inner side of the air guide cover (202), and a wheel shaft of the wind wheel (203) being connected to an input end of the gearbox (201); An air intake fan (204), the air intake fan (204) being arranged at the upper end of the inner wall of the civil air defense door body (1), the output end of the air intake fan (204) being connected to the upper end of the air guide cover (202) via an air duct, the air inlet (4) being located on the inner side of the civil air defense door body (1) and being provided with an upper air duct (205), the input end of the air intake fan (204) being connected to the upper air duct (205) via an air duct.

3. The civil air defense door with air purification and filtering function according to claim 1 is characterized in that: A brush strip (6) is provided on one side of the air inlet (4) and the air outlet (5) adjacent to the filter ring (302).

4. The civil air defense door with air purification and filtering function according to claim 1 is characterized in that: The air inlet (4) and the air outlet (5) are located at one end of the outer side of the civil air defense door body (1) and are provided with a shutter protection window (7).

5. The civil air defense door with air purification and filtering function according to claim 2 is characterized in that: The input end of the exhaust fan (303) and the output end of the air inlet fan (204) are both provided with protective covers (8).

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