Air flap valve for drainage deep tunnel

Abstract

The utility model discloses an air flap valve for a drainage deep tunnel, belongs to the technical field of drainage deep tunnels, and solves the problem that an exhaust facility of an existing deep tunnel system cannot well meet the exhaust safety requirement and the deodorization treatment sealing requirement at the same time. The exhaust device comprises a frame, a vertical mounting plate is arranged on a side fixing frame, a plurality of transverse mounting plates are connected to the vertical mounting plate to divide the frame into a plurality of mounting units, a blade mounting strip is arranged on the lower surface of the transverse mounting plate above each mounting unit, and exhaust blades are mounted on the blade mounting strips. A limiting strip is arranged on the upper surface of the transverse mounting plate below each mounting unit, a supporting frame is arranged in the middle of each mounting unit, and the limiting strips and the supporting frames are located on the same side of the exhaust blades. When the internal air pressure of the deep tunnel system is not greater than the external air pressure, the deep tunnel system is closed; when the internal air pressure of the deep tunnel system is larger than the external air pressure to a certain degree, the exhaust blades are pushed to be opened outwards, and the system exhausts air.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep drainage tunnels, and in particular relates to an air flap door used in deep drainage tunnels. Background Art

[0002] The deep drainage tunnel system project has a significant effect on urban flood control and overflow pollution control, and is one of the important measures to enhance urban flood control and drainage capabilities and improve urban water environment.

[0003] The deep drainage tunnel system mainly consists of water inlet connection, waterfall shaft, deep tunnel, discharge facilities, silt removal and exhaust facilities. The inflow process of the deep drainage tunnel system is a complex fluid dynamics process. Sometimes the inflow is too fast and the gas in the deep tunnel cannot be discharged in time, which will cause surge phenomenon and even water will spray out of the shaft to the ground, endangering nearby pedestrians and vehicles. The inflow waterfall process also causes violent mixing of gas and water, causing the odor in the sewage to escape, affecting the quality of life of surrounding residents.

[0004] The existing deep tunnel system exhaust facilities have certain defects in exhaust and odor control. In order to reduce the adverse effects of gas on deep tunnels and ensure the stable and safe operation of the system, exhaust wells are usually set up on the deep drainage tunnels to effectively discharge the gas in the tunnel; but deep drainage tunnels often need to be set up in the central area of ​​the city, and have high requirements for urban environment and odor control. Before these odors are discharged into the surrounding atmosphere, they often need to be deodorized through ventilation and deodorization facilities to meet environmental needs. The normal operation of the deodorization facilities requires the sealing of the entire deep tunnel system. The existing deep tunnel system exhaust facilities cannot well balance the exhaust safety needs and deodorization treatment and sealing needs. Utility Model Content

[0005] The utility model aims to provide an air flap door for draining deep tunnels, so as to solve the problem that the existing deep tunnel system exhaust facilities cannot well take into account the exhaust safety requirements and the deodorization and sealing requirements.

[0006] The technical solution of the utility model is: an air flap door for draining deep tunnels, comprising a frame enclosed by a top fixing frame, a bottom fixing frame and two side fixing frames, a vertical mounting plate is provided on the side fixing frame, a plurality of horizontal mounting plates are connected to the vertical mounting plate, the plurality of horizontal mounting plates divide the frame into a plurality of mounting units, a blade mounting strip is provided on the lower surface of the upper horizontal mounting plate of each mounting unit, exhaust blades are mounted on the blade mounting strip, the exhaust blades cover the mounting unit, a limiting strip is provided on the upper surface of the lower horizontal mounting plate of each mounting unit, a support frame is provided in the middle of each mounting unit, and the limiting strip and the support frame are located on the same side of the exhaust blade.

[0007] As a further improvement of the present invention, the installation direction of the limiting strip and the supporting frame of one installation unit is opposite to the installation direction of the limiting strip and the supporting frame of the other installation units.

[0008] As a further improvement of the utility model, a weighting strip is provided at the lower end of the exhaust blade.

[0009] As a further improvement of the utility model, a weight block is provided at the lower corner of the exhaust blade.

[0010] As a further improvement of the utility model, a reinforcement bar is provided on the top of each mounting unit, the reinforcement bar is opposite to the blade mounting bar, and the exhaust blade is installed between the blade mounting bar and the reinforcement bar.

[0011] As a further improvement of the utility model, a sealing strip is provided between the side fixing frame and the side wall of the exhaust port of the deep drainage tunnel.

[0012] As a further improvement of the present utility model, the exhaust blades are made of rubber.

[0013] As a further improvement of the present invention, 3 to 6 mounting units are provided.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model designs a series of one-way opening exhaust blades. When the internal air pressure of the deep tunnel system is not greater than the external air pressure, the exhaust blades naturally hang down and overlap on the limit strips. The deep tunnel system is closed to prevent odor leakage and meet the operation requirements of the deodorization facilities. When the internal air pressure of the deep tunnel system is greater than the external air pressure and the internal air pressure reaches a certain level, the exhaust blades are pushed to open outwards and the system is exhausted.

[0016] 2. The utility model is designed with an exhaust blade that opens in reverse. When the deodorization facilities inside the deep tunnel system collect air, negative pressure will be caused inside the system. The exhaust blade opens in reverse to achieve the effect of replenishing air under negative pressure.

[0017] 3. The utility model is automatically opened by internal and external air pressure, and no external power is required.

[0018] 4. The utility model has a simple structure, is easy to implement and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 yes Figure 1 AA view in;

[0021] Figure 3 It is a schematic diagram of the structure of the framework in this practicality;

[0022] Figure 4 yes Figure 3 BB view in;

[0023] Figure 5 It is a structural schematic diagram of the installation unit in the utility model;

[0024] Figure 6 yes Figure 5 CC view in;

[0025] Figure 7 It is the installation diagram of the utility model;

[0026] Figure 8 It is a schematic diagram of the installation of the side fixing frame of the utility model;

[0027] Fig. 9 This is a diagram showing the use state of the exhaust blades in the utility model when they are opened outwards;

[0028] Fig.10 This is a diagram of the use state when the exhaust blades in the utility model are opened inwards.

[0029] In the figure: 1-top fixing frame; 2-bottom fixing frame; 3-side fixing frame; 4-vertical mounting plate; 5-horizontal mounting plate; 6-support frame; 7-limiting strip; 8-drainage hole; 9-blade mounting strip; 10-reinforcement strip; 11-weight block; 12-weight strip; 13-exhaust blade; 14-exhaust port; 15-sealing strip; 16-grille. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1-8 As shown, an air flap door for draining deep tunnels comprises a frame enclosed by a top fixing frame 1, a bottom fixing frame 2 and two side fixing frames 3, a vertical mounting plate 4 is provided on the side fixing frame 3, a plurality of horizontal mounting plates 5 are connected to the vertical mounting plate 4, the plurality of horizontal mounting plates 5 divide the frame into a plurality of mounting units, a blade mounting strip 9 is provided on the lower surface of the upper horizontal mounting plate 5 of each mounting unit, an exhaust blade 13 is mounted on the blade mounting strip 9, the exhaust blade 13 covers the mounting unit, a limiting strip 7 is provided on the upper surface of the lower horizontal mounting plate 5 of each mounting unit, a support frame 6 is provided in the middle of each mounting unit, and the limiting strip 7 and the support frame 6 are located on the same side of the exhaust blade 13.

[0032] The installation direction of the limiting strip 7 and the supporting frame 6 of one installation unit is opposite to that of the limiting strip 7 and the supporting frame 6 of the other installation unit, that is, located at the other side of the exhaust blade 13 of the installation unit.

[0033] A weighting strip 12 is provided at the lower end of the exhaust blade 13, and a weighting block 11 is provided at the lower corner of the exhaust blade 13. The weighting strip 12 and the weighting block 11 are respectively mounted on the exhaust blade 13 by bolts.

[0034] A reinforcement strip 10 is provided on the top of each mounting unit. The reinforcement strip 10 is opposite to the blade mounting strip 9 , and the exhaust blade 13 is installed between the blade mounting strip 9 and the reinforcement strip 10 by means of bolts.

[0035] A sealing strip 15 is provided between the side fixing frame 3 and the side wall of the exhaust port 14 of the deep drainage tunnel, and two ends of the sealing strip 15 are respectively fixed to the side fixing frame 3 and the side wall of the exhaust port 14 by bolts.

[0036] The exhaust blade 13 is made of rubber.

[0037] There are 3-6 installation units.

[0038] Embodiment 1,

[0039] like Figure 7 As shown, the utility model is vertically installed at the exhaust port 14 of the deep tunnel system, and the top fixing frame 1 and the bottom fixing frame 2 are fixed at the exhaust port 14 by bolts. A grille 16 is provided at the top of the deep tunnel system, and rainwater will flow in. Therefore, a drainage hole 8 is provided at the bottom of the utility model.

[0040] This embodiment is provided with 5 installation units, the exhaust blades 13, the limit strips 7 and the support frame 6 of the topmost installation unit are reversely installed, the exhaust blades 13 can be opened to the inside of the deep tunnel system, and the exhaust blades 13 of the remaining 4 installation units can be opened to the outside of the deep tunnel system.

[0041] The top fixing frame 1 is made of angle steel, the bottom fixing frame 2 is made of steel plate, the side fixing frame 3 is made of channel steel, and the vertical mounting plate 4 is made of angle steel. The top fixing frame 1, the bottom fixing frame 2 and the side fixing frame 3 are welded together to form a rectangular frame, and the vertical mounting plate 4 is welded to one side of the side fixing frame 3.

[0042] The support frame 6 is made of angle steel, and one edge of the angle steel in contact with the exhaust blade 13 and the limit strip 7 are in the same plane and form an inclined plane, which is conducive to the close fitting of the exhaust blade 13. The support frame 6 supports the middle part of the exhaust blade 13 to prevent the exhaust blade 13 from bending and collapsing.

[0043] The exhaust blade 13 is made of rubber, which is waterproof and sun-proof and has good durability. The sealing strip 15 is made of chloroprene rubber. The remaining parts are made of stainless steel to improve the durability and life in the deep tunnel corrosive gas environment.

[0044] The rubber exhaust blade 13 itself has a certain weight. A weighting strip 12 is set at its lower end and rectangular weighting blocks 11 are set at the two corners of the lower end to increase the weight of the exhaust blade 13, so that the lower end of the exhaust blade 13 fits well with the limiting strip 7, the sealing effect is good, and the exhaust blade 13 is protected, thereby improving the durability of the exhaust blade 13.

[0045] When the air pressure inside the deep tunnel system is not greater than the external air pressure (such as on a sunny day), the exhaust blades 13 naturally hang down and overlap the limit strips 7. Figure 2 As shown, the deep tunnel system is closed to prevent odor leakage and meet the operation requirements of the deodorization facilities; when the internal air pressure of the deep tunnel system is greater than the external air pressure (such as on rainy days) and the internal air pressure reaches a certain level, the exhaust blades 13 are pushed to open to the outside of the deep tunnel system, as shown in FIG. Fig. 9 As shown, the system is exhausted to stabilize the air pressure.

[0046] When the deodorization facilities in the deep tunnel system collect air, negative pressure will be generated in the system. When the negative pressure reaches a certain level, the top exhaust blade 13 will open to the inside of the deep tunnel system. Fig.10 As shown, the air replenishing effect is achieved under negative pressure.

Claims

1. An air flap door for draining deep tunnels, characterized in that: The invention comprises a frame formed by a top fixing frame (1), a bottom fixing frame (2) and two side fixing frames (3); a vertical mounting plate (4) is provided on the side fixing frame (3); a plurality of horizontal mounting plates (5) are connected to the vertical mounting plate (4); the plurality of horizontal mounting plates (5) divide the frame into a plurality of mounting units; a blade mounting strip (9) is provided on the lower surface of the upper horizontal mounting plate (5) of each mounting unit; an exhaust blade (13) is mounted on the blade mounting strip (9); the exhaust blade (13) covers the mounting unit; a limit strip (7) is provided on the upper surface of the lower horizontal mounting plate (5) of each mounting unit; a support frame (6) is provided in the middle of each mounting unit; the limit strip (7) and the support frame (6) are located on the same side of the exhaust blade (13).

2. The air flap door for draining deep tunnels according to claim 1, characterized in that: The installation direction of the limiting strip (7) and the supporting frame (6) of one of the installation units is opposite to the installation direction of the limiting strip (7) and the supporting frame (6) of the other installation units.

3. An air flap door for draining deep tunnels according to claim 1 or 2, characterized in that: A weighting strip (12) is provided at the lower end of the exhaust blade (13).

4. The air flap door for draining deep tunnels according to claim 3, characterized in that: A weight block (11) is provided at the lower corner of the exhaust blade (13).

5. The air flap door for draining deep tunnels according to claim 4, characterized in that: A reinforcement strip (10) is provided on the top of each mounting unit. The reinforcement strip (10) is located opposite to the blade mounting strip (9), and the exhaust blade (13) is mounted between the blade mounting strip (9) and the reinforcement strip (10).

6. The air flap door for draining deep tunnels according to claim 5, characterized in that: A sealing strip (15) is provided between the side fixing frame (3) and the side wall of the exhaust port (14) of the deep drainage tunnel.

7. The air flap door for draining deep tunnels according to claim 6, characterized in that: The exhaust blades (13) are made of rubber.

8. The air flap door for draining deep tunnels according to claim 7, characterized in that: The number of the installation units is 3-6.

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