Closed building ventilation device

Abstract

The utility model relates to the technical field of ventilation devices for buildings, and discloses a closed ventilation device for buildings, which comprises an air filtering barrel, a fan barrel is fixedly welded below the air filtering barrel, a fan for sucking air is fixed in the fan barrel through a bolt, and the fan barrel is fixedly connected with the air filtering barrel through a bolt. A plurality of side suction ports are annularly formed in the side edge of the air filtering barrel at intervals and used for sucking air and feeding air, a plurality of rain blocking rings which are spaced up and down are further fixedly arranged on the outer wall of the air filtering barrel in a welding mode, and an open hole with an upward opening is formed in the air filtering barrel and used for installing a barrel-shaped filter element. After the fan exhausts air, external air enters the air filter barrel from the side suction port and penetrates through the side wall of the barrel-shaped filter element under the action of negative pressure to be filtered, and compared with a planar filter screen, the air filter has a larger filter area, so that the air suction is smoother, and the air suction efficiency is improved. In addition, compared with a planar filter screen, dust is not easy to accumulate when the filter screen is not used, and the filter screen is not influenced by raining, snowing, hail and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of building ventilation devices, in particular to a closed building ventilation device. Background Art

[0002] The existing patent publication number is CN220321513U, which discloses a building ventilation and air conditioning circulation purification device, including an outlet pipe connected to one end of the exhaust pipe, the upper surface of the outlet pipe is connected to a detachable fixing plate by bolts, the upper surface of the fixing plate is connected to a detachable exhaust hood by bolts, an exhaust fan is fixedly installed in the middle of the upper surface of the exhaust hood, the surface of the exhaust fan is sleeved with a detachable filter cartridge, the lower surface of the exhaust pipe is clamped with a detachable receiving plate, and one side of the upper surface of the receiving plate is fixedly connected to a column. The building ventilation and air conditioning circulation purification device, through the arrangement of the receiving plate, the column and the upper wall plate, the lower surface of the exhaust pipe is pressed against the upper surface of the receiving plate against the inside of the wall connected to the upper wall plate, and the column plays a supporting role, which is conducive to good support of the exhaust pipe, so that the exhaust pipe is more stable during the air supply and ventilation process, and is easy to connect and install;

[0003] However, such an installation structure is actually very common for technicians in this field. In addition, the filter area in the device is very small, which can easily lead to poor air intake. Regardless of whether air is inhaled or not, dust will accumulate on the filter, resulting in poor air intake, and will seriously affect ventilation in rainy, snowy, and hail weather. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to overcome the above problems, a closed building ventilation device is provided, which solves the above problems.

[0005] The utility model solves the technical problem by adopting the following technical solutions:

[0006] The fan is fixedly provided with a fan cylinder for sucking air under the fan cylinder by means of bolts, and a plurality of side suction ports are provided at annular intervals on the side edges of the fan cylinder for sucking air in, and a plurality of rain shield rings are fixedly provided at upper and lower intervals by means of welding, and an opening open upwards is provided in the fan cylinder for installing a cylindrical filter element, a top sealing plate is fixedly provided on the upper end surface of the cylindrical filter element, the cylindrical filter element is inserted in the fan cylinder, the top sealing plate is fixedly connected to the top of the filter cylinder by means of bolts, the cylindrical filter element is hollow and open downwards, and after the cylindrical filter element is inserted in the filter cylinder, the lower end surface of the cylindrical filter element abuts against the filter cylinder, the inner diameter of the cylindrical filter element is larger than the inner diameter of the fan cylinder, and when the fan draws air, external air enters the filter cylinder from the side suction ports and passes through the side walls of the cylindrical filter element under the action of negative pressure to complete filtering.

[0007] Preferably, in order to prevent a large amount of dust on the outer wall from falling into the air filter cylinder and becoming difficult to clean when replacing the cylindrical filter element, a dust ring is fixedly provided at the bottom of the cylindrical filter element, and an upwardly open annular groove is formed between the dust ring and the cylindrical filter element, which can accommodate the fallen dust.

[0008] Preferably, in order to prevent animals from crawling into the air filter cylinder, a metal protective net is fixed at the side suction port by bolts or welding.

[0009] Preferably, the distance between the outer wall of the cylindrical filter element and the inner wall of the air filter cylinder is at least half of the diameter of the cylindrical filter element, thereby allowing air to flow more smoothly during inhalation.

[0010] The advantages and positive effects of the utility model are as follows: after the fan draws air, external air enters the air filter cylinder from the side suction port and passes through the side wall of the cylindrical filter element under the action of negative pressure to complete filtration. Compared with a flat filter, it has a larger filtration area, so that air inhalation is smoother. In addition, compared with a flat filter, it is not easy to accumulate dust when not in use, and will not be affected by rain, snow, hail, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 Schematic diagram of the structure;

[0014] Figure 3 yes Figure 1The enlarged structural diagram is shown in FIG.

[0015] The symbols in the attached drawings are described as follows: 10, cylindrical filter element; 11, top sealing plate; 12, dust accumulation ring; 13, rain shield ring; 14, side suction port; 15, filter cylinder; 16, fan cylinder; 17, fan. DETAILED DESCRIPTION

[0016] Now, the utility model is further described in detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model. The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings:

[0017] like Figure 1-3 As shown, a closed building ventilation device described in the utility model includes a filter cylinder 15, a fan cylinder 16 is welded and fixedly arranged below the filter cylinder 15, wherein a fan 17 for suction is fixed in the fan cylinder 16 by bolts, and a plurality of side suction ports 14 are arranged at annular intervals on the side of the filter cylinder 15 for suction and air intake, and a plurality of rain shield rings 13 are welded and fixedly arranged at upper and lower intervals on the outer wall of the filter cylinder 15, an opening open upward is arranged in the filter cylinder 15 for installing a cylindrical filter element 10, and a fixedly arranged upper end surface of the cylindrical filter element 10 There is a top sealing plate 11, and the cylindrical filter element 10 is inserted in the air filter cylinder 15. The top sealing plate 11 is fixedly connected to the top of the air filter cylinder 15 by bolts. The cylindrical filter element 10 is hollow and open downward. After the cylindrical filter element 10 is inserted in the air filter cylinder 15, the lower end surface of the cylindrical filter element 10 is against the air filter cylinder 15. The inner diameter of the cylindrical filter element 10 is larger than the inner diameter of the fan cylinder 16. When the fan 17 draws air, the external air enters the air filter cylinder 15 from the side suction port 14 and passes through the side wall of the cylindrical filter element 10 under the action of negative pressure to complete the filtration.

[0018] Preferably, in order to prevent a large amount of dust on the outer wall from falling into the air filter cylinder 15 and becoming difficult to clean when replacing the cylindrical filter element 10, a dust ring 12 is fixedly provided at the bottom of the cylindrical filter element 10, and an upwardly open annular groove is formed between the ash ring 12 and the cylindrical filter element 10, which can accommodate the fallen dust.

[0019] Preferably, in order to prevent animals from crawling into the air filter cylinder 15, a metal protective net is fixed at the side suction port 14 by bolts or welding.

[0020] Preferably, the distance between the outer wall of the cylindrical filter element 10 and the inner wall of the air filter cylinder 15 is at least half of the diameter of the cylindrical filter element 10, so that the air can flow more smoothly during inhalation.

[0021] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A ventilation device for a closed building, characterized in that: The invention comprises an air filter cylinder (15), wherein a fan cylinder (16) is welded and fixedly arranged below the air filter cylinder (15), wherein a fan (17) for sucking air is fixedly arranged in the fan cylinder (16) by means of bolts, and a plurality of side suction ports (14) are arranged at annular intervals on the side of the air filter cylinder (15) for sucking air, and a plurality of rain shielding rings (13) are welded and fixedly arranged at upper and lower intervals on the outer wall of the air filter cylinder (15), an opening opening which opens upwards is arranged in the air filter cylinder (15) for installing a cylindrical filter element (10), a top sealing plate (11) is fixedly arranged on the upper end surface of the cylindrical filter element (10), and the cylindrical filter element (10) is provided with a top sealing plate (11), and the cylindrical filter element (10) is provided with a top sealing plate (11) which is fixedly arranged on the upper end surface of the cylindrical filter element (10). The core (10) is inserted into the air filter cylinder (15), and the top sealing plate (11) is fixedly connected to the top of the air filter cylinder (15) by bolts. The cylindrical filter core (10) is hollow and open downward. After the cylindrical filter core (10) is inserted into the air filter cylinder (15), the lower end surface of the cylindrical filter core (10) abuts against the air filter cylinder (15). The inner diameter of the cylindrical filter core (10) is larger than the inner diameter of the fan cylinder (16). When the fan (17) draws air, external air enters the air filter cylinder (15) from the side suction port (14) and passes through the side wall of the cylindrical filter core (10) under the action of negative pressure to complete filtering.

2. A closed building ventilation device according to claim 1, characterized in that: In order to prevent a large amount of dust accumulated on the outer wall from falling into the air filter cylinder (15) and becoming difficult to clean when replacing the cylindrical filter element (10), a dust accumulation ring (12) is fixedly provided at the bottom of the cylindrical filter element (10), and an upwardly open annular groove is formed between the dust accumulation ring (12) and the cylindrical filter element (10), and the annular groove can accommodate the fallen dust.

3. A closed building ventilation device according to claim 2, characterized in that: In order to prevent animals from crawling into the air filter cylinder (15), a metal protection net is fixed at the side suction port (14) by means of bolts or welding.

4. A closed building ventilation device according to claim 3, characterized in that: The distance between the outer wall of the cylindrical filter element (10) and the inner wall of the air filter cylinder (15) is at least half the diameter of the cylindrical filter element (10), thereby enabling air to flow more smoothly during inhalation.

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