Subway station hall exhaust device

Abstract

The application relates to a subway station hall exhaust device, which comprises an axial flow fan, the axial flow fan comprises a shell, a mounting seat fixed in the shell, a motor fixed on the mounting seat, a fan blade fixed on the upper end of the motor and a second grid installed on the air outlet on the upper end of the shell; the application can extract the dirty air in the subway station hall, adsorb nicotine and tar volatiles in smoke smell through an activated carbon filter screen, avoid backflow of peculiar smell, reduce air pollution, create a good environment for passengers and staff, and the first grid can prevent larger foreign matters from being sucked into the filter screen and colliding with the filter screen; staff can rotate a supporting frame to drive the first grid and the activated carbon filter screen to be separated from the shell, rapidly open the bottom end of the shell for internal motor maintenance, and the operation is convenient.

Description

Technical Field

[0001] This application relates to the field of subway station exhaust technology, and in particular to an exhaust device for subway station halls. Background Technology

[0002] The exhaust system in subway station halls is an important component of the subway ventilation system. Its function is to remove stale air, heat, and moisture from the station hall, ensuring a comfortable and safe environment for passengers and staff.

[0003] The exhaust vents in subway station concourses are usually located in the ceiling area, and axial flow fans are used to exhaust the polluted air inside the concourse. The axial flow fan consists of a shell with openings at the top and bottom, a motor, and fan blades. During the production of the axial flow fan, grilles are installed at both ends of the shell for protection. Since there are smoking areas in the restrooms of the subway station concourse, the smoke is directly discharged from the axial flow fan to the outside of the concourse, causing pollution. If the smoke is not treated, it is easy for it to flow back into the concourse, causing secondary pollution. In addition, the axial flow fan is in operation for a long time, and the grilles are not easy to remove, which affects the maintenance of the axial flow fan.

[0004] Therefore, those skilled in the art have provided a subway station concourse exhaust device to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the problems mentioned in the background art, this application provides a subway station hall exhaust device that can extract polluted air from the subway station hall, adsorb nicotine and tar volatiles in the smoke through an activated carbon filter, prevent odor backflow, reduce air pollution, and create a good environment for passengers and staff. At the same time, the first grille can prevent larger foreign objects from being sucked in and colliding with the filter.

[0006] The technical solution for a subway station concourse ventilation device provided in this application is as follows:

[0007] An exhaust system for a subway station hall includes an axial flow fan. The axial flow fan comprises a housing, a mounting base fixed inside the housing, a motor fixed to the mounting base, fan blades fixed to the upper end of the motor, and a second grille installed at the air outlet at the upper end of the housing. A bottom ring is fixed to the outer wall of the air inlet at the bottom end of the housing. A support frame located at the bottom end of the air inlet is rotatably connected to the bottom end of the bottom ring. The support frame has a circular ring structure, and a first grille is fixedly connected to the bottom end of the support frame. An activated carbon filter is slidably inserted into the inner wall of the upper end of the support frame, and the activated carbon filter is sandwiched between the upper end of the support frame and the bottom end of the housing. A limiting mechanism for fixing the support frame is fixed to the outer wall of the housing.

[0008] Preferably, the limiting mechanism includes a fixed seat and a fixed rod. The fixed seat is fixed to the outer surface of the housing, and the fixed rod is vertically slidably connected to the fixed seat. The bottom end of the fixed rod is slidably inserted into the inner wall of the support frame.

[0009] In this invention, a fixing rod is inserted into the support frame to limit the support frame and prevent it from becoming loose. By moving the fixing rod upward to disengage from the support frame, the support frame can be rotated to open the bottom of the housing and disassemble the activated carbon filter.

[0010] Preferably, a spring is fixed between the upper end of the fixing rod and the inner wall of the fixing seat, and a lever is fixed to the outer wall of the fixing rod.

[0011] Preferably, the support frame has a through-hole, and the bottom end of the fixing rod is inserted into the through-hole.

[0012] Preferably, the bottom ring is fixedly connected to a rotating shaft, and one side of the support frame is rotatably connected to the rotating shaft.

[0013] Preferably, the upper inner wall of the support frame is provided with a positioning groove of an annular structure, and the activated carbon filter is inserted into the positioning groove.

[0014] Preferably, a positioning plate is fixed to the outer wall of the activated carbon filter, and a groove is formed on the inner wall of the upper end of the support frame, into which the positioning plate is inserted.

[0015] In this invention, the positioning plate on the outer wall of the activated carbon filter is inserted into the groove to limit the activated carbon filter and prevent it from rotating.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. This application can extract polluted air from subway station halls and adsorb nicotine and tar volatiles from cigarette smoke through activated carbon filters, preventing odor backflow, reducing air pollution, and creating a good environment for passengers and staff. At the same time, the first grille can prevent larger foreign objects from being sucked in and colliding with the filter.

[0018] 2. Operators can rotate the support frame to detach the first grille and activated carbon filter from the housing, quickly open the bottom of the housing to inspect the internal motor, making the operation convenient.

[0019] 3. When disassembling, simply move the filter upwards to detach it from the support frame. After cleaning, reinsert it into the support frame and reset the support frame to complete the filter installation. The fixing rod can limit the support frame to prevent loosening. When disassembling, moving the fixing rod upwards will allow the support frame to rotate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the air outlet at the upper end of the housing of this application;

[0022] Figure 3This is a schematic cross-sectional view of the shell of this application;

[0023] Figure 4 This application Figure 3 The enlarged schematic diagram of part A shown below;

[0024] Figure 5 This is a schematic diagram showing the separation of the activated carbon filter and the support frame in this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Fixing base; 3. Fixing rod; 4. Insertion hole; 5. Rotating shaft; 6. First grille; 7. Activated carbon filter; 8. Support frame; 9. Bottom ring; 10. Second grille; 11. Fan blade; 12. Motor; 13. Positioning groove; 14. Mounting base; 15. Spring; 16. Toggle lever; 17. Positioning plate; 18. Groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5 As shown, this application discloses a subway station hall exhaust device, including an axial flow fan. The axial flow fan includes a housing 1, a mounting base 14 fixed inside the housing 1, a motor 12 fixed to the mounting base 14, a fan blade 11 fixed to the upper end of the motor 12, and a second grille 10 installed at the air outlet at the upper end of the housing 1. The axial flow fan is installed at the exhaust port position of the subway station hall. The motor 12 drives the fan blade 11 to rotate, and exhausts the polluted air inside the subway station hall from the air inlet at the bottom end of the housing 1 to the air outlet at the upper end of the housing 1, so as to ensure that passengers and staff have a comfortable and safe environment. A bottom ring 9 is fixed to the outer wall of the air inlet at the bottom end of the housing 1. A support frame 8 located at the bottom end of the air inlet is rotatably connected to the bottom end of the bottom ring 9. The support frame 8 has a circular ring structure, and a first grille 6 is fixedly connected to the bottom end of the support frame 8.

[0028] An activated carbon filter 7 is slidably inserted into the inner wall of the upper end of the support frame 8. The activated carbon filter 7 is sandwiched between the upper end of the support frame 8 and the bottom end of the shell 1. The surface of the activated carbon in the activated carbon filter 7 has a large number of micropores, which can capture nicotine, tar volatiles and other substances in the smoke in the subway station hall through physical adsorption, thereby reducing odor residue.

[0029] A limiting mechanism for fixing the support frame 8 is fixed to the outer wall of the housing 1;

[0030] By adopting the above technical solution, the motor 12 drives the fan blade 11 to rotate, drawing the polluted air in the subway station hall upward from the bottom of the first grille 6. The polluted air passes through the activated carbon filter 7 to absorb nicotine and tar volatiles in the smoke, preventing the odor from flowing back into the subway station hall. Then, the smoke is discharged upward from the air inlet at the bottom of the shell 1 through the air outlet at the top of the shell 1, which facilitates the discharge of polluted air in the subway station hall, reduces air pollution in the subway station hall, and provides a comfortable and safe environment for passengers and staff. The setting of the first grille 6 at the bottom of the support frame 8 prevents larger foreign objects from being sucked in and colliding with the activated carbon filter 7.

[0031] During disassembly, workers rotated the support frame 8 using the rotating shaft 5 as the pivot point, causing the first grille 6 and activated carbon filter 7 inside the support frame 8 to detach from the bottom of the housing 1. Figure 5 As shown, the bottom of the housing 1 can be opened at this time to facilitate the maintenance of the motor 12 inside the housing 1. At the same time, the activated carbon filter 7 can be moved upward to detach from the support frame 8, and the activated carbon filter 7 can be disassembled for cleaning.

[0032] In this embodiment, the limiting mechanism includes a fixed base 2 and a fixed rod 3. The fixed base 2 is fixed to the outer surface of the housing 1, and the fixed rod 3 is vertically slidably connected to the fixed base 2. The bottom end of the fixed rod 3 is slidably inserted into the inner wall of the support frame 8. By inserting the fixed rod 3 into the support frame 8, the support frame 8 is limited to prevent it from becoming loose. By moving the fixed rod 3 upward to disengage from the support frame 8, the support frame 8 can be rotated to open the bottom of the housing 1 and disassemble the activated carbon filter 7.

[0033] In addition, after the cleaned activated carbon filter 7 is inserted back into the upper part of the support frame 8, the support frame 8 can be rotated back to the bottom of the housing 1 so that the support frame 8 and the bottom of the housing 1 clamp the activated carbon filter 7, which facilitates the installation of the activated carbon filter 7.

[0034] A spring 15 is fixed between the upper end of the fixing rod 3 and the inner wall of the fixing base 2, which facilitates the downward movement of the fixing rod 3 into the insertion hole 4. A lever 16 is fixed on the outer wall of the fixing rod 3, which facilitates the upward movement of the fixing rod 3 to disengage from the insertion hole and compress the spring 15.

[0035] The support frame 8 has a through hole 4, and the bottom end of the fixing rod 3 is inserted into the through hole 4.

[0036] To facilitate the rotation of the support frame 8, the bottom ring 9 is fixedly connected to the rotating shaft 5, and one side of the support frame 8 is rotatably connected to the rotating shaft 5.

[0037] The upper inner wall of the support frame 8 is provided with a positioning groove 13 with an annular structure. The activated carbon filter 7 is inserted into the positioning groove 13, which makes it easy for the activated carbon filter 7 to be inserted into the upper part of the support frame 8. While rotating the support frame 8 to the bottom of the shell 1, the activated carbon filter 7 is positioned between the first grid 6 and the bottom of the shell 1.

[0038] Furthermore, a positioning plate 17 is fixed to the outer wall of the activated carbon filter 7, and a groove 18 is opened on the inner wall of the upper end of the support frame 8. The positioning plate 17 is inserted into the groove 18. The positioning plate 17 on the outer wall of the activated carbon filter 7 is inserted into the groove 18 to limit the activated carbon filter 7 and prevent the activated carbon filter 7 from rotating.

[0039] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0040] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0041] Working principle: The housing 1 is installed at the exhaust port of the subway station hall. The air inlet at the bottom of the housing 1 is used for air intake. The motor 12 drives the fan blade 11 to rotate, drawing the polluted air in the subway station hall upward from the bottom of the first grille 6. The polluted air passes through the activated carbon filter 7 to absorb nicotine and tar volatiles in the smoke, preventing the odor from flowing back into the subway station hall. Then the smoke is discharged upward from the air inlet at the bottom of the housing 1 through the air outlet at the top of the housing 1, which facilitates the discharge of polluted air in the subway station hall, reduces air pollution in the subway station hall, and provides a comfortable and safe environment for passengers and staff.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A subway station hall exhaust device, comprising an axial flow fan, the axial flow fan comprising a housing (1), a mounting base (14) fixed inside the housing (1), a motor (12) fixed to the mounting base (14), fan blades (11) fixed to the upper end of the motor (12), and a second grille (10) installed at the air outlet at the upper end of the housing (1), characterized in that: The outer wall of the air inlet at the bottom of the housing (1) is fixed with a bottom ring (9), and the bottom of the bottom ring (9) is rotatably connected to a support frame (8) located at the bottom of the air inlet. The support frame (8) has a circular ring structure, and the bottom of the support frame (8) is fixedly connected to a first grille (6). An activated carbon filter (7) is slidably inserted into the inner wall of the upper end of the support frame (8), and the activated carbon filter (7) is sandwiched between the upper end of the support frame (8) and the bottom end of the shell (1); The outer wall of the housing (1) is fixed with a limiting mechanism for fixing the support frame (8).

2. The subway station hall exhaust device according to claim 1, characterized in that: The limiting mechanism includes a fixed seat (2) and a fixed rod (3). The fixed seat (2) is fixed on the outer surface of the housing (1). The fixed rod (3) is vertically slidably connected to the fixed seat (2). The bottom end of the fixed rod (3) is slidably inserted into the inner wall of the support frame (8).

3. The subway station hall exhaust device according to claim 2, characterized in that: A spring (15) is fixed between the upper end of the fixed rod (3) and the inner wall of the fixed seat (2), and a lever (16) is fixed to the outer wall of the fixed rod (3).

4. A subway station hall exhaust device according to claim 2, characterized in that: The support frame (8) has a through hole (4), and the bottom end of the fixing rod (3) is inserted into the hole (4).

5. A subway station hall exhaust device according to claim 1, characterized in that: The bottom ring (9) is fixedly connected to a rotating shaft (5), and one side of the support frame (8) is rotatably connected to the rotating shaft (5).

6. A subway station hall exhaust device according to claim 1, characterized in that: The upper inner wall of the support frame (8) is provided with a positioning groove (13) with an annular structure, and the activated carbon filter (7) is inserted into the positioning groove (13).

7. A subway station hall exhaust device according to claim 1, characterized in that: The outer wall of the activated carbon filter (7) is fixed with a positioning plate (17), and the upper inner wall of the support frame (8) is provided with a groove (18), and the positioning plate (17) is inserted into the groove (18).

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