Smoke exhausting and dust falling device for underground cavern

Abstract

The utility model relates to the field of underground cavern construction, and discloses an underground cavern smoke discharging and dust falling device which comprises a main water pipe laid in the advancing direction of an underground cavern, a plurality of door-shaped frames are evenly distributed on the main water pipe, and the main water pipe is communicated with the door-shaped frames through a first electromagnetic valve. A plurality of drain holes are formed in the door-shaped frame, and a spray head is fixed on the door-shaped frame; the suction box is arranged between the two door-shaped frames, the top of the suction box is open, the bottom of the suction box is closed, and the drainage pipe is arranged at the bottom of the side wall of the suction box; the system further comprises a drainage ditch arranged beside the drainage pipe, and the drainage ditch is parallel to the main water pipe. The system further comprises a controller, and the controller is electrically connected with all the first electromagnetic valves and all the second electromagnetic valves. According to the device disclosed by the utility model, the negative pressure suction box is utilized to directly suck part of water mist adsorbed with dust and unadsorbed dust into the suction box, and the water mist and the unadsorbed dust are converged with water flow of the main water pipe and then are discharged, so that smoke exhaust and dust fall of the underground cavern can be effectively carried out.

Description

Technical Field

[0001] The utility model relates to the field of underground cavern construction, in particular to a smoke exhaust and dust reduction device for an underground cavern. Background Art

[0002] With the deepening of urban underground space development, underground engineering construction has become an indispensable part of modern urban construction, and has involved many fields such as subway tunnels, underground commercial facilities, and integrated pipe corridors. These projects are often carried out deep underground, with limited space, closed environment, and extremely poor natural ventilation conditions. In such an environment, an effective ventilation and smoke exhaust system is not only a basic requirement to ensure construction safety, but also a key measure to deal with sudden fire accidents and protect the lives of personnel.

[0003] In traditional construction, smoke exhaust and dust reduction in underground engineering construction mostly use independent smoke removal equipment and dust reduction equipment, which has the disadvantages of slow response, low efficiency, large space occupation, and high energy consumption. Especially in emergency situations, due to the lack of fixed-point dispatch response, it is difficult to quickly and accurately respond to the spread of smoke or dust according to the location of the fire or the location of the dusty construction site. In serious cases, it may even aggravate the fire, hinder evacuation, and increase the risk of casualties and property losses.

[0004] Therefore, an underground cavern smoke exhaust and dust reduction device is proposed to solve the above technical problems. Utility Model Content

[0005] The actual problem to be solved by the utility model is that the existing underground cavern dust and smoke exhaust systems have slow response speed and low efficiency, and are processed independently by different smoke exhaust equipment and dust reduction equipment, resulting in a lack of fixed-point response, making it difficult to quickly and accurately respond to fire or dust construction sites.

[0006] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0007] A smoke exhaust and dust reduction device for an underground cavern comprises a main water pipe laid along the direction of travel of the underground cavern, a plurality of door-shaped frames are evenly arranged on the main water pipe, the door-shaped frames are hollow structures, and are connected to the main water pipe through a first solenoid valve; a plurality of drainage holes are also opened on the lower surface of the top cross bar of the door-shaped frame, and a nozzle is fixed at the drainage hole;

[0008] It also includes a suction box disposed between every two adjacent door frames, the suction box is open at the top and closed at the bottom, one side of the lower middle part of the suction box is connected to the main water pipe through a branch pipe, and the branch pipe is provided with a second solenoid valve; it also includes a drainage pipe opened at the bottom of the side wall of the suction box; it also includes a horizontal suction fan disposed on the upper part of the suction box, and a horizontal protective net is provided above the suction fan;

[0009] It also includes a drainage ditch arranged beside the drainage pipe, wherein the drainage ditch is arranged parallel to the main water pipe;

[0010] It also includes a controller, which is electrically connected to all the first solenoid valves and all the second solenoid valves respectively.

[0011] In particular, a vertical slide groove is opened on the side wall of the suction box, and two vertical limit rods are arranged in the vertical slide groove; it also includes a cleaning component arranged above the suction fan blades, and the cleaning component includes a cleaning rod horizontally penetrating the vertical slide groove, and the cleaning rod is sleeved on the outside of the two limit rods; it also includes a telescopic spring whose two ends are respectively connected to the cleaning rod and the upper wall or lower wall of the vertical slide groove; the end of the cleaning rod is also provided with a cleaning head located above the suction fan blades.

[0012] In particular, the protective net includes an outer frame and a filter arranged inside the outer frame; a side wall of the suction box above the suction fan is provided with an installation groove matching the outer frame, and the outer frame is horizontally inserted into the installation groove; the other three side walls of the suction box are provided with positioning grooves matching the thickness of the outer frame, and the outer frame is embedded in the positioning groove after being inserted into the installation groove.

[0013] Particularly, the main water pipe is bent to form a U-shaped installation position between adjacent portal frames, and the suction box is arranged in the U-shaped installation position.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model organically combines dust reduction and smoke exhaust, uses the upper gantry frame to perform water curtain dust reduction, and cooperates with the negative pressure suction box to directly draw part of the water mist adsorbed with dust and the dust not adsorbed into the suction box, and then discharges it after merging with the water flow of the main water pipe, which can effectively exhaust smoke and reduce dust in the underground cavern. In addition, by controlling the opening and closing of the specific first solenoid valve and the second solenoid valve, the gantry near the dust construction point or the fire location in the underground cavern can be started at a fixed point to prevent the spread of dust or toxic and harmful gases, so as to achieve the purpose of rapid fixed-point response. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the structure of the utility model from top view.

[0017] Figure 3 This is a schematic diagram of the suction box structure.

[0018] Figure 4 for Figure 3 Enlarged structural diagram at A in the middle.

[0019] In the figure: main water pipe - 1; door frame - 2; first solenoid valve - 3; nozzle - 4; suction box - 5; branch pipe - 6; second solenoid valve - 7; drainage pipe - 8; suction fan - 9; protection net - 10; drainage ditch - 11; vertical slide - 12; limit rod - 13; cleaning rod - 14; telescopic spring - 15; cleaning head - 16; filter - 17; outer frame - 18; U-shaped installation position - 19. DETAILED DESCRIPTION

[0020] See also Figure 1~Figure 2 , a smoke exhaust and dust reduction device for an underground cavern, comprising a main water pipe 1 laid along the direction of travel of the underground cavern, a plurality of door frames 2 evenly arranged on the main water pipe 1, the door frames 2 being hollow structures, and connected to the main water pipe 1 through a first solenoid valve 3; a plurality of drainage holes are also opened on the lower surface of the top cross bar of the door frame 2, and a nozzle 4 is fixed at the drainage hole;

[0021] It also includes a suction box 5 disposed between every two adjacent door frames 2, the suction box 5 is open at the top and closed at the bottom, one side of the middle and lower part of the suction box 5 is connected to the main water pipe 1 through a branch pipe 6, and a second solenoid valve 7 is provided on the branch pipe 6; it also includes a drain pipe 8 opened at the bottom of the side wall of the suction box 5 on the opposite side of the branch pipe 6; it also includes a horizontal suction fan 9 disposed on the upper part of the suction box 5, and a horizontal protective net 10 is provided above the suction fan 9;

[0022] It also includes a drainage ditch 11 arranged beside the drainage pipe 8, and the drainage ditch 11 is arranged parallel to the main water pipe 1;

[0023] It also includes a controller, which is electrically connected to all the first solenoid valves 3 and all the second solenoid valves 7 respectively.

[0024] The main working principle of the device of the utility model is as follows: water is supplied to the inside of the portal frame 2 inside the cavern through the main water pipe 1, and the water supply of the nozzle 4 of a single portal frame 2 is controlled through the first electromagnetic valve 3, so as to accurately control the portal frame 2 at a specific position to spray water for adsorption operation, thereby preventing the spread of fire smoke or construction dust. The first electromagnetic valves 3 corresponding to multiple portal frames 2 on both sides of the dust construction or fire point can also be started by the controller, so as to form a water curtain barrier on both sides of the dust or fire point, thereby achieving the purpose of closing the dust path, so as to assist in preventing the spread of dust or fire smoke. Then, the controller opens the second solenoid valve 7 at the corresponding position of the suction box 5, and uses the branch pipe 6 to draw water from the main water pipe 1 into the suction box 5, and then starts the suction fan 9 in the suction box 5, so as to suck the dust or fire smoke, as well as some water mist that has absorbed dust or fire smoke particles, into the suction box 5, and after merging with the branch water flow introduced into the suction box 5, it is discharged into the drainage ditch 11 through the drainage pipe 8, thereby further playing a role in dust reduction and smoke prevention. The drainage ditch 11 can also assist in a certain adsorption effect on the way through the underground cavern, further improving the dust reduction effect. In this process, the protective net 10 above the suction fan 9 is used to provide protection for the suction fan 9 below, to prevent flying rocks or other debris from external construction from falling into the suction box 5 and causing damage to the suction fan 9.

[0025] As a preferred embodiment, a vertical slide groove 12 is opened on the side wall of the suction box 5, and two vertical limit rods 13 are arranged in the vertical slide groove 12; it also includes a cleaning component arranged above the blades of the suction fan 9, and the cleaning component includes a cleaning rod 14 horizontally penetrating the vertical slide groove 12, and the cleaning rod 14 is sleeved on the outside of the two limit rods 13; it also includes a telescopic spring 15 whose two ends are respectively connected to the cleaning rod 14 and the upper wall or lower wall of the vertical slide groove 12; the end of the cleaning rod 14 is also provided with a cleaning head 16 located above the blades of the suction fan 9.

[0026] In this embodiment, if Figure 3~Figure 4 As shown, the dust-facing surface of the suction fan 9 can be cleaned regularly through the cleaning assembly to prevent dust accumulation from affecting the dust removal effect. Specifically, at regular intervals, the part of the cleaning rod 14 extending out of the suction box 5 is manually pushed downward, and the telescopic spring 15 is stretched or shortened to store elastic potential energy after being stressed, and at the same time, the cleaning head 16 contacts the blades of the suction fan 9, thereby cleaning the dust-facing surface of the suction fan 9. After cleaning, let go, and the cleaning rod 14 rebounds under the elastic potential energy released by the telescopic spring 15, thereby breaking away from contact with the suction fan 9.

[0027] As a preferred embodiment, the protective net 10 includes an outer frame 18 and a filter 17 arranged inside the outer frame 18; a side wall of the suction box 5 above the suction fan 9 is provided with an installation groove matching the outer frame 18, and the outer frame 18 is horizontally inserted into the installation groove; the other three side walls of the suction box 5 are provided with positioning grooves matching the thickness of the outer frame 18, and the outer frame 18 is inserted into the installation groove and embedded in the positioning groove.

[0028] In this embodiment, a detailed structure of the protective net 10 is provided. Specifically, the outer frame 18 mainly plays a supporting role, the filter 17 is installed inside the outer frame 18, and the outer frame 18 is inserted into the installation groove of the side wall of the suction box 5 in a manner similar to a drawer, and the outer frame 18 is inserted into the suction box 5 and embedded in the positioning grooves on the other three side walls of the suction box 5, so as to stabilize the position of the protective net 10.

[0029] As a preferred embodiment, the main water pipe 1 is bent to form a U-shaped installation position 19 between adjacent portal frames 2 , and the suction box 5 is disposed in the U-shaped installation position 19 .

[0030] In this embodiment, if Figure 2 As shown, the main water pipe 1 is provided with a U-shaped installation position 19 between adjacent portal frames 2 for installing the suction box 5, which can effectively reduce the occupation of the underground cavern space, and at the same time can also play a certain protective role for the suction box 5, and can also avoid damage or safety problems caused by construction workers accidentally colliding with the suction box 5.

[0031] The words “connection” and “fixation” appearing in the description of the present invention may refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0032] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An underground cavern smoke exhaust and dust reduction device, characterized in that: It comprises a main water pipe (1) laid along the direction of travel of the underground cavern, a plurality of door frames (2) are evenly arranged on the main water pipe (1), the door frames (2) are hollow structures, and are connected to the main water pipe (1) through a first solenoid valve (3); a plurality of drainage holes are also formed on the lower surface of the top cross bar of the door frame (2), and a nozzle (4) is fixed at the drainage hole; It also includes a suction box (5) arranged between every two adjacent door frames (2), the suction box (5) being open at the top and closed at the bottom, one side of the middle and lower part of the suction box (5) being connected to the main water pipe (1) through a branch pipe (6), the branch pipe (6) being provided with a second solenoid valve (7); it also includes a drainage pipe (8) opened at the bottom of the side wall of the suction box (5); it also includes a horizontal suction fan (9) arranged at the upper part of the suction box (5), a horizontal protective net (10) being provided above the suction fan (9); It also includes a drainage ditch (11) arranged beside the drainage pipe (8), wherein the drainage ditch (11) is arranged in parallel with the main water pipe (1); It also includes a controller, which is electrically connected to all the first solenoid valves (3) and all the second solenoid valves (7) respectively.

2. The underground chamber smoke exhaust and dust reduction device according to claim 1, characterized in that: The side wall of the suction box (5) is provided with a vertical slide groove (12), and two vertical limit rods (13) are provided in the vertical slide groove (12); it also includes a cleaning component arranged above the blades of the suction fan (9), and the cleaning component includes a cleaning rod (14) horizontally penetrating the vertical slide groove (12), and the cleaning rod (14) is sleeved on the outside of the two limit rods (13); it also includes a telescopic spring (15) whose two ends are respectively connected to the cleaning rod (14) and the upper wall or lower wall of the vertical slide groove (12); the end of the cleaning rod (14) is also provided with a cleaning head (16) located above the blades of the suction fan (9).

3. The underground chamber smoke exhaust and dust reduction device according to claim 1, characterized in that: The protective net (10) comprises an outer frame (18) and a filter (17) arranged inside the outer frame (18); a side wall of the suction box (5) above the suction fan (9) is provided with a mounting groove matching the outer frame (18); the outer frame (18) is horizontally inserted into the mounting groove; and positioning grooves matching the thickness of the outer frame (18) are provided on the other three side walls of the suction box (5); the outer frame (18) is inserted into the mounting groove and then embedded in the positioning groove.

4. The underground cavern smoke exhaust and dust reduction device according to claim 1, characterized in that: The main water pipe (1) is bent between adjacent door frames (2) to form a U-shaped installation position (19), and the suction box (5) is arranged in the U-shaped installation position (19).

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